Static pressure prefabricated pipe pile sinking vibratory hammer

Abstract

The utility model belongs to the technical field of building foundation and foundation construction equipment, and particularly relates to a static pressure prefabricated pipe pile sinking vibratory hammer. According to the main technical scheme, the drill rod type vibrator comprises a cylindrical shell, a drill rod type vibrator, an electric coil and a cylindrical shell, wherein a hanging ring and a cylindrical shoulder are arranged at the top of the cylindrical shell; the drill rod type vibrator can do piston motion in the cylindrical shell and is made of a magnetic conductive material; the electric coil is fixed on the outer side of the cylindrical shell and comprises an electric connection mechanism; and a movable limiting mechanism is arranged between the drill rod type vibrator and the cylindrical shell or between the drill rod type vibrator and the cylindrical shell. The vibratory hammer can be inserted into a prefabricated pipe pile, a resistance layer at the bottom of the pipe pile is directly hammered, resistance at the bottom end of the pipe pile is damaged, and therefore the pile sinking purpose is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building foundation and foundation construction equipment, and specifically relates to a static pressure prefabricated pipe pile sinking vibration hammer. Background Art

[0002] Static pile pressure is a method of pile foundation construction. Prefabricated pipe piles (also known as reinforced concrete prefabricated pipe piles) are prefabricated in prefabricated component processing plants. After curing and reaching the design strength, they are transported to the construction site. The prefabricated pipe piles are pressed into the soil by the pile pressure mechanism of the static pile driver with the deadweight of the pile driver and the counterweight on the frame. However, in the process of pile sinking of the above-mentioned prefabricated pipe piles, due to the uncertainty of the stratum, when encountering a resistance layer, the pipe piles may not be pressed in place and fail to meet the design requirements. At this time, if the pile pressure force is increased and the pile is forced, it will be time-consuming and labor-intensive, affecting the construction efficiency. Second, excessive pile pressure force may sometimes damage the pipe piles and even cause waste piles. This phenomenon seriously affects the construction of static pile pressure, and even requires the design department to change the original design plan when necessary. Utility Model Content

[0003] The utility model aims to provide a static pressure prefabricated pipe pile sinking vibration hammer which can be inserted into a prefabricated pipe pile, directly hammer the resistance layer at the bottom of the pipe pile, and destroy the resistance at the bottom end of the pipe pile.

[0004] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0005] A static pressure prefabricated pipe pile sinking vibration hammer, characterized by:

[0006] A cylindrical shell with a lifting ring and a shoulder on the top, a brazing-type vibrator which can perform piston motion in the cylindrical shell and is made of a magnetic conductive material, an electric coil including an electric connection mechanism fixed to the outside of the cylindrical shell, and a cylindrical shell sleeved on the electric coil; a movable limiting mechanism is provided between the brazing-type vibrator and the cylindrical shell or the cylindrical shell.

[0007] In the structure of the above-mentioned static pressure prefabricated pipe pile sinking vibration hammer,

[0008] - A fixing ring of the electric coil is arranged on the cylindrical shell;

[0009] ——A limited outer ring is arranged on the brazing vibrator, and an energy storage spring is sleeved between the fixed ring and the limited outer ring;

[0010] The fixing ring is arranged at the lower half of the cylindrical shell so that the lower end thereof retains the cylindrical section for fixing the energy storage spring;

[0011] The movable limiting mechanism is composed of a limiting inner ring arranged on the inner wall of the cylindrical shell;

[0012] ——The movable limiting mechanism is composed of an outer protrusion arranged on the brazing-type vibrator and a sliding groove opened on the cylindrical shell and corresponding to it.

[0013] Compared with the prior art, the static pressure prefabricated pipe pile sinking vibration hammer provided by the utility model has the following characteristics: firstly, since the drill-type vibrator constituting the vibration hammer structure is made of magnetic conductive material, it can make piston movement in a cylindrical shell provided with an electric coil that generates push-pull force on the drill-type vibrator, so that the resistance layer at the bottom of the pipe pile can be squeezed to the surroundings, thereby realizing the continued sinking of the pipe pile; secondly, since the vibration hammer structure is a cylindrical structure, it can be smoothly inserted into the pipe pile, avoiding damage to the pipe pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the axial structure of the static pressure prefabricated pipe pile sinking vibration hammer provided by the utility model;

[0015] Figure 2 It is a schematic diagram of the axial structure of the second type of static pressure prefabricated pipe pile sinking vibration hammer;

[0016] Figure 3 for Figure 2 Schematic diagram of the A-A section structure. DETAILED DESCRIPTION

[0017] The structure and working principle of a static pressure prefabricated pipe pile sinking vibration hammer provided by the utility model are further described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 The figure is a schematic diagram of the best structure of a static pressure prefabricated pipe pile sinking vibration hammer provided by the utility model. That is, the structure of the static pressure prefabricated pipe pile driving vibration hammer includes a cylindrical shell 1 with a lifting ring 11 and a tube shoulder 12 on the top, a brazing vibrator 2 that can perform piston motion in the cylindrical shell and is made of magnetic conductive material, a fixing ring 13 is provided at the lower end of the outer side of the cylindrical shell, and an electric coil 3 that can be electrically connected through an electric connection mechanism is fixed between the tube shoulder 12 and the fixing ring 13, a limiting outer ring 21 is provided on the above-mentioned brazing vibrator, an energy storage spring 4 is sleeved between the limiting outer ring 21 of the brazing vibrator 2 and the fixing ring 13, a cylindrical outer shell 5 that is preferably spirally fixedly connected to the tube shoulder 12 of the cylindrical shell is provided on the above-mentioned brazing vibrator 2 with the energy storage spring and the electric coil 3, and a limiting inner ring 51 is provided on the inner wall of the lower end of the cylindrical shell 5, and the limiting inner ring 51 and the limiting outer ring 21 provided on the brazing vibrator constitute an active limiting mechanism for controlling the amplitude of the brazing vibrator piston motion.

[0019] The working principle of the above-mentioned static pressure prefabricated pipe pile sinking vibration hammer is as follows: when the construction encounters a resistance layer and the pipe pile cannot be pressed, the vibration hammer is aimed at the center of the inner hole of the pipe pile, and the cable is lowered downward. When the vibration hammer encounters the resistance layer (detecting the weight), the electric coil 3 is connected to the power supply through the electrical connection mechanism 31, and the vibration hammer composed of the brazing vibrator 2 composed of the metal magnetic conductive material moves up and down in the cylindrical shell 1 and the cylindrical outer shell 5 with the magnetic field generated by the electric coil 3; that is, the electric coil 3 is energized to generate a magnetic field, the brazing vibrator 2 moves upward, and at the same time the energy storage spring is compressed and stored. When the brazing vibrator 2 moves upward to a predetermined position, the electric coil 3 is powered off, the magnetic field disappears, and the brazing vibrator 2 moves downward rapidly under the action of gravity and the spring, impacting the resistance layer and squeezing the resistance layer to the surroundings; when the brazing vibrator 2 moves downward to the right position (the limiting outer ring 21 on the brazing vibrator 2 is blocked by the limiting inner ring 51 on the inner wall of the cylindrical shell 5), the coil 3 is energized, and the generated magnetic field pulls the brazing vibrator 2 upward; the squeezed resistance layer has space to be released, the resistance generated by the resistance layer to the pipe pile is weakened, and the pipe pile moves downward under the action of pressure.

[0020] In the structure of the above-mentioned static pressure prefabricated pipe pile sinking vibration hammer,

[0021] ——In order to further improve the stability of the brazing type vibrator 2 when it performs piston motion in the cylindrical housing 1, the fixing ring 13 constituting the cylindrical housing 1 is arranged at the lower half of the cylindrical housing, so that the lower end thereof retains a barrel section 14 capable of fixing the energy storage spring 4; that is, the energy storage spring 4 is inserted into the barrel section 14, which can effectively improve its stability performance;

[0022] - It is used to limit the amplitude of the active movement of the brazing type vibrator 2 in the cylindrical housing 1 to prevent it from escaping from the cylindrical housing. The structure of the active limiting mechanism can also be as follows: Figure 2 , 3 The structure shown is composed of the outer protrusion 22 arranged on the above-mentioned brazing type vibrator and the slide groove 15 opened on the inner wall of the corresponding cylindrical shell, which can also achieve the purpose of preventing it from escaping from the cylindrical shell.

Claims

1. A static pressure prefabricated pipe pile sinking vibration hammer, characterized in that: include A cylindrical shell with a lifting ring and a shoulder on the top, a brazing-type vibrator which can perform piston motion in the cylindrical shell and is made of a magnetic conductive material, an electric coil including an electric connection mechanism fixed to the outside of the cylindrical shell, and a cylindrical shell sleeved on the electric coil; a movable limiting mechanism is provided between the brazing-type vibrator and the cylindrical shell or the cylindrical shell.

2. A static pressure prefabricated pipe pile sinking vibration hammer as claimed in claim 1, characterized in that: The cylindrical shell is provided with a fixing ring of the electric coil.

3. A static pressure prefabricated pipe pile sinking vibration hammer as claimed in claim 1, characterized in that: A limited outer ring is arranged on the brazing type vibrator; an energy storage spring is sleeved between the fixing ring and the limited outer ring.

4. A static pressure prefabricated pipe pile sinking vibration hammer as claimed in claim 3, characterized in that: The fixing ring is arranged at the lower half of the cylindrical shell, so that the lower end thereof retains the cylindrical section for fixing the energy storage spring.

5. The static pressure prefabricated pipe pile sinking vibration hammer according to claim 1, characterized in that: The movable limiting mechanism is composed of a limiting inner ring arranged on the inner wall of the cylindrical shell.

6. A static pressure prefabricated pipe pile sinking vibration hammer as claimed in claim 1, characterized in that: The movable limiting mechanism is composed of an outer protrusion arranged on the brazing-type vibrator and a sliding groove opened on the cylindrical shell and corresponding to the outer protrusion.

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