CN211872996U - Anchor static pile driver - Google Patents

Abstract

The utility model discloses an anchor rod static pile driver, which is used for sinking a pile body into the ground. The utility model comprises: a base, which can be fixed on a foundation bottom plate through an anchor rod; a guide rod, which is provided with at least one There are two guide rods installed on the upper side of the base; a movable seat, the movable seat is sleeved on the guide rod; the movable seat is provided with a second through hole for the pile body to freely pass through; clamping part, the clamping part is fixedly installed on the movable seat for pressing against the outer side of the pile body; the fixed seat is fixedly installed on the top of the guide rod; the first fixed seat is installed on the fixed seat A hydraulic jack; a third through hole for the pile body to freely pass through is opened on the fixed seat. The application does not need to build a steel frame, effectively reduces the height of the equipment, enables the utility model to adapt to the construction of the pile body in a low headroom environment, and has the advantages of high pull-out resistance, stable pile-pressing frame, simple and reasonable structure, few joints, and convenient construction. Etc.

Description

Anchor static pile driver

technical field

The utility model relates to an anchor rod static pile driver.

Background technique

During the use of some buildings, due to insufficient bearing capacity of the pile foundation, uneven distribution of soil layers or other reasons, the buildings will be inclined. Reinforce and rectify deviations to meet the relevant regulations of building completion acceptance.

In the process of reinforcement and correction, one of the methods is to add piles on the foundation structure of the inclined building and then seal the piles to improve its load bearing state, so as to achieve the purpose of repair. At present, the reinforcement and rectification of inclined buildings are mainly based on the foundation structure of the original building by compensating the anchor rod static pressure pile and then sealing the pile to improve its load bearing state. In addition, due to the advantages of convenient construction, low noise and no vibration, the anchor bolt static pile driver is also widely used in new construction sites, as well as foundation reinforcement and underpinning of existing buildings.

At present, in the construction of anchor static pressure piles, the static pressure piles are arranged with a jack on the upper part of the prefabricated pile, and the reaction frame beam is arranged on the upper part of the jack. However, due to the limitation of the working space, the distance from the basement roof to the basement bottom Limited, the above-mentioned static pressure pile device is blocked by the jack and the cross beam of the reaction frame in the middle, and the length of the single-section prefabricated pile is limited, so the number of connected lengths of the prefabricated pile increases, the number of joints is too many, the risk factor is large, and the pile pressing process. In the middle, it is necessary to constantly adjust the position of the top reaction beam, which is troublesome and takes a long time to construct.

Utility model content

In order to solve the above problems, the utility model proposes a bolt static pile driver, which does not need to build a steel frame and is easy to transport. The specific technical scheme is:

Anchor bolt static pile driver, which is used to sink piles into the ground, including:

a base, a connecting part and a first through hole for the pile body to freely pass through are provided on the base, and the base can be detachably fixed on the base plate through the anchor rod through the connecting part;

Guide rods, at least two guide rods are provided, the guide rods extend along the vertical direction and are fixedly installed on the upper side of the base;

a movable seat, which is sleeved on the guide rod and can move freely in the vertical direction along the guide rod; the movable seat is provided with a second through hole for the pile body to freely pass through;

a clamping part, the clamping part is fixedly installed on the movable seat, and the clamping part can be pressed against the outer side surface of the pile body;

a fixed seat, the fixed seat is fixedly installed on the top of the guide rod; a first hydraulic jack is installed on the fixed seat, and the first hydraulic jack can drive the movable seat to move up and down in the vertical direction; The third through hole through which the pile body freely passes.

When the utility model is in use, the base is connected to the anchor rod pre-installed on the base plate, so that the entire equipment is connected to the base plate, and a fourth through hole is opened on the base plate, and the pile body passes through the fourth through hole. The hole is sunk into the ground. During the pile driving process, the clamping part is pressed against the outer surface of the pile body. Under the push of the first hydraulic jack, the pile body is sunk into the soil body. When the piston rod reaches its limit, the clamping part is released from the pile body, and then the first hydraulic jack lifts the clamping part up to the upper limit, and then presses the clamping part against the outer surface of the pile body, and pushes the pile up again. The body is pressed down until the sinking of the pile body is completed.

The application cancels the structures such as the steel frame in the prior art, which effectively reduces the height of the equipment, so that the utility model can adapt to the construction of the pile body in the low headroom environment, and the utility model has the advantages of high pull-out resistance and stable pile-pressing frame. , simple and reasonable structure, few joints, convenient construction and other advantages, especially when the components in the utility model are made of high-strength steel, the tensile capacity can be greatly improved without increasing the weight of the equipment.

Further, the movable seat has an outer frame, the outer frame has a clamping cavity opened up and down, the cavity is formed as the second through hole, and the clamping portion is fixedly installed in the clamping cavity of the outer frame;

The clamping part includes two clamping plates movably arranged in the clamping cavity, and a second hydraulic jack for driving at least one clamping plate to move, the two clamping plates can be hugged on the pile body On the outer side, the two clamping plates can be tightly hugged on the outer side of the pile body under the push of the second hydraulic jack, and the second hydraulic jack is fixed on the outer frame.

The hydraulic jack is used as the power machine connected to the pile body, so that a large friction force can be formed between the clamping plate and the pile body, so as to avoid the clamping part and the pile body due to insufficient friction during the pile pressing process. Slippage occurs between piles, which affects the efficiency and progress of pile pressing.

Specifically, two groups of jacks are arranged in the clamping cavity, each group of jacks includes two second hydraulic jacks, and each group of jacks corresponds to one clamping plate. This design enables each clamping plate to move under the push of the second hydraulic jack, even if there is a certain deviation from the set position due to the positioning of the anchor static pile driver, due to the two clamping plates Both can move, so that the two clamping plates can still be hugged on the outer side of the pile body relatively smoothly.

Further, in the two groups of jacks, each second hydraulic jack in one group of jacks corresponds to one second hydraulic jack in the other group of jacks, and the piston rod of each second hydraulic jack extends in the horizontal direction, And the piston rods of the two corresponding second hydraulic jacks are coaxially arranged.

The design can prevent the two piston rods from being dislocated when the piston rods of the corresponding two second hydraulic jacks are extended, so that the clamping plates are bent and deformed due to uneven force.

Further, each clamping plate includes an embracing portion and pressing portions disposed at opposite ends of the embracing portion, and among the two pressing portions of each clamping plate, at least one pressing portion is connected to the place where the clamping plate is located. on the piston rod of a second hydraulic jack in a corresponding set of jacks; the clasping portion has a pressing surface that can fit on the outer side of the pile body. After setting the holding part and the pressing part, when the second hydraulic jack is exerting force on the clamping plate, the force of the second hydraulic jack is directly applied to the pressing part, which can avoid the force of the second hydraulic jack being directly applied to the holding part. , thereby causing damage to the pile body.

In order to enhance the friction force between the pressing surface and the pile body, clinching teeth are formed on the pressing surface. The engaging teeth can effectively increase the friction force between the pressing surface and the surface of the pile body.

Specifically, in order to meet the needs of steel pipe piles as the main piles used in the reinforcement project, in a specific embodiment, the pressing surface is in the shape of an arc.

Further, in order to avoid the displacement of the clamping plate during the moving process, a guide member is arranged in the clamping cavity, a first guide portion is arranged on the guide member, the clamping plate is supported on the guide member, and is located on the guide member. The clamping plate is provided with a second guide portion that is clamped on the first guide portion.

To facilitate fixing the base on the anchor rod, in a specific embodiment, an anchor rod hole for passing the anchor rod is opened on the base along the vertical direction.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of an embodiment of the present invention.

FIG. 2 is a front view of the drawing shown in FIG. 1 .

FIG. 3 is a view in the direction A-A of FIG. 2 .

FIG. 4 is a view in the direction B-B of FIG. 2 .

FIG. 5 is a view in the direction C-C of FIG. 2 .

Detailed ways

1-5, a bolt static pile driver, which is used to sink the pile body 100 into the ground, which includes:

A base 20 , the base 20 is in the shape of a rectangular plate extending in a horizontal direction, and a first through hole 21 for the pile body 100 to freely pass through is provided on the base 20 .

A guide rod 25 is fixedly installed on each of the four corners of the base 20 , and each guide rod extends in the vertical direction and is installed on the upper side of the base.

The base 20 is provided with an up and down bolt hole 22 . When the bolt 200 passes through the bolt hole 22 , the fixing nut 210 is screwed on the top of the bolt so that the bolt 200 is connected to the base 20 . The bolt hole and the fixing nut 210 together form a connecting portion. That is, the connecting portion can be detachably connected to the anchor rod.

The movable seat 30 includes a rectangular ring-shaped outer frame 31. The bottom of the outer frame extends inward to form a rectangular ring 32. The rectangular ring has a rectangular hole 33. The outer frame and the space enclosed by the rectangular ring form a rectangular ring 32. It is a clamping cavity with upper and lower openings, and the clamping cavity communicates with the rectangular hole 33 downward. The rectangular hole and the clamping cavity together form a second through hole for the pile body to freely pass through.

A guide hole 35 is provided on each of the four corners of the outer frame 31, and a linear bearing 36 is installed in each guide hole. The guide rod 25 passes through the outer frame 31 after passing through the linear bearing 36, so that the movable seat is sleeved on the on the guide rod, and can move freely in the vertical direction along the guide rod.

The fixing base 50 is fixedly installed on the top of the guide rod 25 , and the top of the guide rod passes through the fixing base upward to form a locking screw 253 , and the locking nut 252 is screwed on the locking screw 253 . The fixed seat is provided with a third through hole 51 for the pile body to freely pass through.

Two first hydraulic jacks 53 are arranged on the top of the fixed seat 50 , the two first hydraulic jacks 53 are symmetrically arranged on both sides of the third through hole 51 , and the hydraulic cylinder 54 of the first hydraulic jack 53 is fixedly mounted on the fixed seat On the upper side of 50, the first piston rod 55 of the first hydraulic jack 53 freely passes downward through the fixed seat 50 and is then fixed on the upper side of the outer frame 31. When the first piston rod 55 is extended or shortened, it can drive the movable seat. 30 moves up and down in the vertical direction.

The clamping part 40 includes two clamping plates and two groups of jacks, each group of jacks includes two second hydraulic jacks. For the convenience of description, the two clamping plates are referred to as the first clamping plate 41 and the second clamping plate respectively. Plate 42, two second hydraulic jacks in one set of jacks are called second hydraulic jacks A46 and second hydraulic jacks B47, and two second hydraulic jacks in the other set of jacks are called second hydraulic jacks C48 And the second hydraulic jack D49 , the hydraulic cylinders of the four second hydraulic jacks are fixedly installed on the inner wall of the outer frame 31 .

Each set of jacks corresponds to one clamping plate, wherein the second hydraulic jack A46 and the second hydraulic jack B47 correspond to the first clamping plate 41 , and the second hydraulic jack C48 and the second hydraulic jack D49 correspond to the second clamping plate 42 . The piston rods of the four second hydraulic jacks all extend horizontally. The second hydraulic jack A46 corresponds to the second hydraulic jack D49, and the piston rods of the two jacks are coaxially arranged. The second hydraulic jack B47 corresponds to the second hydraulic jack C48, and the piston rods of the two jacks are coaxially arranged.

The pile body 100 used by the anchor static pile driver for sinking in this embodiment is a steel pipe pile. The clamping plate 41 includes an embracing portion 415, a first pressing portion 416 disposed at one end of the embracing portion 415 and a first pressing portion 417 disposed at the other end of the embracing portion 415. Viewed in the vertical direction, the The clasping portion 415 has an arc-shaped inner side surface 4151, the inner side surface 4151 is formed as a pressing surface, and the inner side surface 4151 can be closely attached to the outer side surface of the steel pipe pile, that is, the clasping portion has a The pressing surface on the outer side of the pile body.

The structure of the second clamping plate 42 is the same as that of the second clamping plate, and the inner side of the second clamping plate is opposite to the inner side of the first clamping plate, so that the embracing parts of the two clamping plates can be enclosed on the outer wall of the steel pipe pile. In order to make the clamping plate more closely hug the steel pipe pile, the engaging teeth 411 are formed on the pressing surface.

The first pressing portion 416 of the first clamping plate 41 is connected to the end face of the piston rod A461 of the second hydraulic jack A46 by using countersunk head screws 43; the second pressing portion 417 is connected to the second hydraulic jack using the same countersunk head screw The end face of the piston rod B471 of B47. In a similar manner, the second clamping plate 42 is connected to the piston rods of the second hydraulic jack C48 and the second hydraulic jack D49.

That is, each clamping plate includes an embracing portion and pressing portions disposed at opposite ends of the embracing portion. Among the two pressing portions of each clamping plate, at least one pressing portion is connected to the corresponding clamping plate. One of a set of jacks on the piston rod of a second hydraulic jack.

In this embodiment, two guide plates 34 are installed on the upper side of the rectangular ring 32, one of which extends along the extending direction of the piston rod of the second hydraulic jack A46 and the piston rod of the second hydraulic jack D49, and is located in the Just below the central axis of the piston rod of the second hydraulic jack A46 and the piston rod of the second hydraulic jack D49, a clamping groove 412 for clamping on the guide plate is opened below the two clamping plates. Another guide plate extends along the extending direction of the piston rod of the second hydraulic jack B47 and the piston rod of the second hydraulic jack C48, and is located at the center axis of the piston rod of the second hydraulic jack B47 and the piston rod of the second hydraulic jack C48. Right below, below the two clamping plates, there is a clamping slot for clamping on the guide plate.

It can be understood that, in other embodiments, a guide rail with a guide groove may also be provided on the rectangular ring 32, and a guide block that can be inserted into the guide groove is provided on the clamping plate. Of course, other similar guiding mechanisms can also be provided. That is, a guide member is arranged in the clamping cavity, a first guide portion is arranged on the guide member, the clamping plate is supported on the guide member, and a first guide portion is clamped on the clamping plate. on the second guide.

During construction, first install the anchor rod 200 on the base plate 10, then insert the anchor rod hole 22 on the base 20 into the anchor rod 200, and then screw the top of the anchor rod with the fixing nut 210 to fix the base 20 on the base plate 10, and then open a fourth through hole 11 on the base plate, and then install the other components of the entire bolt static pile driver on the base 20, thereby fixing the entire bolt static pile driver on the foundation plate 10. . The pile body 100 is sunk into the ground through the fourth through hole 11 under the action of the anchor bolt static pile driver. Only one bolt 200 is shown by way of example in FIG. 3 .

In other embodiments, the fourth through hole 11 can be opened first, and then the anchor rod 200 can be installed.

Claims (9)

1. An anchor rod static pile press machine for sinking a pile body into the ground is characterized by comprising:

the base is provided with a connecting part and a first through hole for the pile body to freely pass through, and the base can be detachably fixed on a foundation bottom plate through an anchor rod through the connecting part;

the guide rods are at least provided with two guide rods, extend along the vertical direction and are fixedly arranged on the upper side of the base;

the movable seat is sleeved on the guide rod and can freely move in the vertical direction along the guide rod; a second through hole for the pile body to freely pass through is formed in the movable seat;

the clamping part is fixedly arranged on the movable seat and can be pressed against the outer side surface of the pile body;

the fixed seat is fixedly arranged at the top of the guide rod; a first hydraulic jack is arranged on the fixed seat and can drive the movable seat to move up and down along the vertical direction; and a third through hole for the pile body to freely pass through is formed in the fixed seat.

2. An anchor rod static pile press according to claim 1,

the movable seat is provided with an outer frame, the outer frame is provided with a clamping cavity with an upper opening and a lower opening, the cavity is formed into the second through hole, and the clamping part is fixedly arranged in the clamping cavity of the outer frame;

this clamping part sets up two grip blocks in this centre gripping intracavity and is used for driving the second hydraulic jack that at least one grip block removed including moving about, and these two grip blocks can embrace on the lateral surface of this pile body, and under the promotion of second hydraulic jack, two grip blocks can closely embrace on the lateral surface of pile body, and this second hydraulic jack is fixed on this frame.

3. An anchor rod static pile press according to claim 2,

two groups of jacks are arranged in the clamping cavity, each group of jacks comprises two second hydraulic jacks, and each group of jacks corresponds to one clamping plate.

4. An anchor rod static pile press according to claim 3,

in the two groups of jacks, each second hydraulic jack in one group of jacks corresponds to one second hydraulic jack in the other group of jacks, a piston rod of each second hydraulic jack extends along the horizontal direction, and the piston rods of the two corresponding second hydraulic jacks are coaxially arranged.

5. An anchor rod static pile press according to claim 3,

each clamping plate comprises a cohesion part and pressing parts arranged at two opposite ends of the cohesion part, and at least one pressing part in the two pressing parts of each clamping plate is connected to a piston rod of a second hydraulic jack in a group of jacks corresponding to the clamping plate; the clasping part is provided with a pressing surface which can be attached to the outer side surface of the pile body.

6. A rock bolt static pile press according to claim 5 wherein engaging teeth are formed on the abutment surface.

7. The anchor rod static pile press of claim 5, wherein the abutting surface is arc-shaped.

8. An anchor rod static pile press according to claim 2, wherein a guide member is provided in the clamping chamber, a first guide portion is provided on the guide member, the clamping plate is supported on the guide member, and a second guide portion is provided on the clamping plate to be caught on the first guide portion.

9. An anchor rod static pile press according to claim 1,

an anchor rod hole for penetrating the anchor rod is arranged on the base along the vertical direction.

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