CN221193325U

CN221193325U - Pile driver for bridge girder erection

Info

Publication number: CN221193325U
Application number: CN202322576553.9U
Authority: CN
Inventors: 阮洋
Original assignee: Hubei Baiqiang Heavy Industry Technology Co ltd
Current assignee: Hubei Baiqiang Heavy Industry Technology Co ltd
Priority date: 2023-09-20
Filing date: 2023-09-20
Publication date: 2024-06-21
Anticipated expiration: 2033-09-20

Abstract

The utility model discloses a pile driver for bridging, wherein a chute for sliding an impact hammer is concavely arranged at the lower end of a casing, the impact hammer is sleeved in the chute, a magnetic unit for controlling the impact hammer to move upwards is arranged in the chute, and a high-frequency vibration mechanism is arranged in the impact hammer. The beneficial effects are that: through the vibration mechanism who sets up, can be after the pile foundation is impacted to the jump bit, through the cooperation reciprocating motion of balancing weight and spring, make the jump bit produce high frequency vibration to make the pile foundation that is acted on separate with the soil layer on every side, reduce frictional resistance, thereby accelerate the efficiency that the pile foundation sunk in soil, the effectual efficiency of construction that promotes the pile foundation.

Description

Pile driver for bridge girder erection

Technical Field

The utility model relates to the technical field of bridge pile foundation construction, in particular to a pile driver for bridge construction.

Background

Pile foundation is composed of pile and pile cap (pile foundation). Pile construction methods are divided into precast piles and cast-in-place piles. The pile driving method is selected according to engineering geological conditions, and the type, section, length, site environment and design requirements of the pile are considered. The ancient China had been rammed with stones a flat stone with ropes attached at the sides for construction of stake. The pile length and pile diameter are increased, and stone a flat stone with ropes attached at the sides is gradually replaced by a drop hammer pulling cast iron.

The pile foundation that the lower part was used for supporting is more in the bridge construction, consequently can adopt the pile driver to lay the pile foundation in order to promote the construction inefficiency of pile foundation, and when general pile driver was under construction to the pile foundation, through the reciprocal hammering of jump hammer in order to sink the pile foundation to predetermined degree of depth or reach the bearing layer, but along with the degree of depth of pile foundation male is more, the frictional force that soil was exerted on the pile foundation also can be more to lead to follow-up pile efficiency to reduce.

Accordingly, a person skilled in the art provides a pile driver for bridging to solve the above-mentioned problems set forth in the background art.

Disclosure of utility model

The utility model aims to provide a pile driver for bridging, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a pile driver for bridging, the lower extreme indent of cover shell is provided with the gliding spout of jump bit, and the slip cap is equipped with the jump bit, be provided with the magnetic force unit that the control jump bit moved upwards in the spout, be provided with the vibrating mechanism of high-frequency vibration in the jump bit.

Further, the vibration mechanism comprises a balancing weight and a spring, a cavity is arranged in the impact hammer in a hollow mode, the balancing weight is sleeved in the cavity in a sliding mode, and springs for supporting are fixedly connected between two ends of the balancing weight and the cavity.

Furthermore, the cavity is located the equal indent in both sides of balancing weight is provided with the groove of dodging that is used for the spring compression, and fixedly connected with spring.

Furthermore, the two sides of the impact hammer are concavely provided with positioning grooves, and balls matched with the grooves are embedded in the sliding grooves in a rolling manner.

Further, the magnetic force unit comprises an electromagnetic block and a permanent magnet, the inner wall of the chute is fixedly connected with the electromagnetic block for controlling the impact hammer to move, and one end of the impact hammer, which is positioned in the chute, is fixedly connected with the permanent magnet.

Further, the outer diameter of the permanent magnet is smaller than that of the impact hammer, and the permanent magnet is avoided in the two grooves.

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

(1) Through the vibration mechanism who sets up, can be after the pile foundation is impacted to the jump bit, through the cooperation reciprocating motion of balancing weight and spring, make the jump bit produce high frequency vibration to make the pile foundation that is acted on separate with the soil layer on every side, reduce frictional resistance, thereby accelerate the efficiency that the pile foundation sunk in soil, the effectual efficiency of construction that promotes the pile foundation.

(2) The impact hammer can be sucked up through the magnetic force unit, so that the distance between the impact hammer and the pile foundation is reserved, and when the impact hammer freely falls to impact the pile foundation, the electromagnetic block can also apply a repulsive force to the permanent magnet, so that the impact force of the impact hammer is accelerated, the impact hammer generates larger impact force when impacting the pile foundation, and the sinking efficiency of the pile foundation is improved.

(3) Through the recess that sets up in the jump bit both sides to be provided with in the spout with recess matched with ball, can assist the removal of jump bit, and make the jump bit more stable smooth in the time of removing, reduce the jump bit when moving down with spout inner wall contact friction and reduce the impact force to the pile foundation.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a pile driver for bridging according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing an internal structure of a pile driver for bridging according to an embodiment of the present utility model;

Fig. 3 is a schematic view showing an internal structure of an impact hammer in a pile driver for bridging according to an embodiment of the present utility model.

Reference numerals:

1. A casing; 2. a percussion hammer; 3. a chute; 4. a magnetic unit; 41. an electromagnetic block; 42. a permanent magnet; 5. a vibration mechanism; 51. balancing weight; 52. a spring; 6. a cavity; 7. an avoidance groove; 8. a groove; 9. and (3) rolling balls.

Detailed Description

The invention is further described below with reference to the accompanying drawings and detailed description:

Embodiment one:

Referring to fig. 1-3, according to an embodiment of the present utility model, a chute 3 for sliding an impact hammer 2 is concavely disposed at the lower end of a casing 1, the impact hammer 2 is slidably sleeved in the chute 3, a magnetic unit 4 for controlling the impact hammer 2 to move upwards is disposed in the chute 3, and a vibration mechanism 5 for vibrating at high frequency is disposed in the impact hammer 2.

According to the scheme, the pile foundation can be hammered through the impact hammer 2 arranged in the casing 1, the pile foundation is driven into the soil, and the vibration mechanism 5 arranged in the impact hammer 2 can drive the impact hammer 2 to vibrate through the reciprocating vibration of the balancing weight 51 when the impact hammer 2 hammers the pile foundation, so that the impact hammer 2 can apply a vibration state to the pile foundation after impacting the pile foundation, the acted pile foundation is separated from surrounding soil layers, the friction resistance is reduced, the efficiency of sinking the pile foundation into the soil is accelerated, and the construction efficiency of the pile foundation is effectively improved. By the magnetic unit 4 provided, the permanent magnet 42 can be attracted by the electromagnet block 41 after the impact hammer 2 is vibrated, so that the distance between the permanent magnet 42 and the electromagnet block 41 is reduced, and the impact hammer 2 is attracted for the next hammering.

Embodiment two:

Referring to fig. 3, the vibration mechanism 5 includes a weight 51 and a spring 52, a cavity 6 is hollow in the impact hammer 2, the weight 51 is slidably sleeved in the cavity 6, the springs 52 that provide support are fixedly connected between two ends of the weight 51 and the cavity 6, and the cavity 6 is disposed at two sides of the weight 51 and is concavely provided with an avoidance groove 7 for compressing the springs 52, and is fixedly connected with the springs 52.

Through the scheme of the utility model, when the impact hammer 2 is free to fall, the balance weight 51 moves upwards relative to the impact hammer 2 by inertia, and then the balance weight 51 is supported by the spring 52 to quickly restore the same movement trend as the impact hammer 2, then after the impact hammer 2 impacts a pile foundation, the impact hammer 2 stops moving due to the blocking of the pile foundation, the balance weight 51 in the cavity 6 moves downwards due to inertia, then the spring 52 at the lower end of the balance weight 51 is pressed and compressed, then the compressed spring 52 obtains elastic potential energy, so the spring 52 is used for restoring the original sample, the two ends are pressed, a part of impact force of the balance weight 51 is applied to the impact hammer 2, the hammering effect of the impact hammer 2 on the pile foundation is increased, then the balance weight 51 is jacked up by the spring 52, the balance weight 51 is pressed and compressed by the spring 52 at the upper end after being sprung, the impact hammer 2 is pushed by the spring 52 at the upper end, the pile foundation 52 at the upper end pushes the impact hammer 2 downwards and compresses the pile foundation, the impact hammer 2 is pushed by the spring 52 at the upper end, the spring 52 at the lower end pushes the balance weight 52 down and the spring 52 at the lower end is compressed, the reciprocating resistance is obtained, the reciprocating resistance is reduced, and the reciprocating resistance of the impact hammer 2 is separated by the spring 52 is generated, and the reciprocating resistance is reduced, and the soil is reciprocated, and the soil is separated.

Embodiment III:

Referring to fig. 2, the two sides of the impact hammer 2 are concavely provided with positioning grooves 8, balls 9 matched with the grooves 8 are embedded in the sliding grooves 3 in a rolling manner, the magnetic unit 4 comprises electromagnetic blocks 41 and permanent magnets 42, the inner wall of the sliding grooves 3 is fixedly connected with the electromagnetic blocks 41 for controlling the impact hammer 2 to move, one end of the impact hammer 2 positioned in the sliding grooves 3 is fixedly connected with the permanent magnets 42, and the outer diameter of the permanent magnets 42 is smaller than the outer diameter of the impact hammer 2 and is avoided in the two grooves 8.

Through the scheme of the utility model, through the grooves 8 arranged on the two sides of the impact hammer 2 and the balls 9 matched with the grooves 8 arranged in the sliding groove 3, the movement of the impact hammer 2 can be assisted, the impact hammer 2 is more stable and smooth when moving, the contact friction with the inner wall of the sliding groove 3 when the impact hammer 2 moves downwards is reduced, the impact force on a pile foundation is reduced, the permanent magnet 42 avoids the grooves 8 (refer to fig. 2), and the contact collision between the permanent magnet 42 and the balls 9 when the impact hammer 2 moves downwards can be effectively avoided.

In order to facilitate understanding of the above technical solutions of the present utility model, the following describes in detail the working principle or operation manner of the present utility model in the actual process.

In practical application, when the electromagnetic block 41 applies thrust to the permanent magnet 42, the impact hammer 2 is enabled to slide out of the sliding groove 3 rapidly, then contacts with the pile foundation and hammers the pile foundation, after the single impact hammer 2 contacts with the pile foundation to stop moving, the spring 52 is enabled to deform and a part of the impact force of the balancing weight 51 is applied to the impact hammer 2 through the spring 52 at the lower end, the impact hammer 2 is enabled to squeeze the pile foundation, then the balancing weight 51 is enabled to spring up through the spring 52 at the upper end, an upward force is applied to the impact hammer 2 through the spring 52 at the upper end, so that the impact hammer 2 generates high-frequency vibration after contacting with the pile foundation in a reciprocating manner, thereby separating the pile foundation from surrounding soil layers, reducing friction resistance and accelerating the efficiency of sinking the pile foundation into soil.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The pile driver for bridging comprises a casing (1) and an impact hammer (2), and is characterized in that a sliding groove (3) for sliding the impact hammer (2) is concavely formed in the lower end of the casing (1), the impact hammer (2) is sleeved in the sliding groove, a magnetic unit (4) for controlling the impact hammer (2) to move upwards is arranged in the sliding groove (3), and a vibration mechanism (5) for vibrating at high frequency is arranged in the impact hammer (2);

The vibrating mechanism (5) comprises a balancing weight (51) and a spring (52), a cavity (6) is arranged in the impact hammer (2), the balancing weight (51) is sleeved in the cavity (6) in a sliding mode, and the springs (52) for providing support are fixedly connected between the two ends of the balancing weight (51) and the cavity (6).

2. Pile driver for bridging according to claim 1, characterized in that the cavities (6) are concavely provided with avoidance grooves (7) for compression of springs (52) on both sides of the balancing weights (51), and are fixedly connected with springs (52).

3. Pile driver for bridging according to claim 1, characterized in that the two sides of the impact hammer (2) are concavely provided with positioning grooves (8), and the sliding groove (3) is internally provided with balls (9) matched with the grooves (8) in a rolling manner.

4. A pile driver for bridging according to claim 3, characterized in that the magnetic unit (4) comprises an electromagnetic block (41) and a permanent magnet (42), the inner wall of the chute (3) is fixedly connected with the electromagnetic block (41) for controlling the impact hammer (2) to move, and one end of the impact hammer (2) located in the chute (3) is fixedly connected with the permanent magnet (42).

5. A bridge driver according to claim 4, characterized in that the permanent magnets (42) have an outer diameter smaller than the outer diameter of the hammer (2) and are set aside in both grooves (8).