Vibration box

Abstract

The utility model relates to the technical field of vibratory hammers, in particular to a vibrating box which comprises a box body, one side of the box body is communicated with a hydraulic oil inlet and a hydraulic oil outlet, two eccentric blocks which are symmetrically arranged are arranged in the box body, and the two eccentric blocks are arranged to be circular in appearance, so that hydraulic oil is prevented from generating rotation resistance to the eccentric blocks; the box body is filled with hydraulic oil, the hydraulic oil in the box body is discharged to the outside through the hydraulic oil outlet for cooling, and the cooled hydraulic oil is discharged into the box body again through the hydraulic oil inlet, so that the effect of circulating flowing of the hydraulic oil is achieved, and the working performance is improved; a driven gear, a driving gear, a bearing and other parts in the box body are cooled in an oil-immersed external circulation forced cooling mode, the cooling effect is improved, the service life is prolonged, shutdown is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of vibratory hammer technology, and in particular to a vibratory box. Background Technology

[0002] A vibratory hammer is a type of pile driving and extraction machinery widely used in various foundation construction projects such as urban construction, bridges, and ports. The periodic excitation force generated by the vibratory hammer causes the pile to vibrate, softening the soil around the pile. This greatly reduces the frictional force between the soil and the pile, allowing the pile to sink into the soil under the action of the vibration force and its own weight. The vibratory box is an important component of the vibratory hammer. The working principle of the vibratory box is to use a hydraulic motor to drive a pair of eccentric blocks to rotate in opposite directions, so that the lateral centrifugal forces they generate cancel each other out, while the vertical centrifugal forces are superimposed. The high-speed rotation of the eccentric blocks causes the vibratory box to vibrate vertically up and down, thereby achieving the purpose of pile driving.

[0003] However, the eccentric blocks, transmission gears, and bearings inside the vibratory box are prone to overheating under high-speed operation. The lubricating oil inside the box also heats up, but the lubricating oil cannot flow, so the heat cannot be released, reducing the cooling effect and easily damaging the components, shortening the service life of the equipment, and reducing the working performance of the vibratory box. Therefore, it is generally necessary to stop the machine for heat dissipation. However, frequent shutdowns will reduce working efficiency. Moreover, currently, splash lubrication is generally used to lubricate and cool the bearings inside the vibratory box. That is, the lubricating oil is thrown to the bearings by the high-speed rotation of the eccentric block for lubrication and cooling. However, when the eccentric block hits and agitates the lubricating oil inside the vibratory box during rotation, it will generate rotational resistance, which will reduce the working performance of the vibratory box. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a vibration box that prevents the eccentric block from generating rotational resistance, improves working performance, improves cooling effect, extends service life and improves working efficiency.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A vibration box includes a box body. One side of the box body is connected to a hydraulic oil inlet and a hydraulic oil outlet. Inside the box body are two symmetrically arranged eccentric blocks. The eccentric blocks are circular in shape. A first transmission shaft is connected to the middle of one eccentric block, and a second transmission shaft is connected to the middle of the other eccentric block. A driven gear is connected to the second transmission shaft, and a driving gear that meshes with the driven gear is connected to the first transmission shaft. One end of the first transmission shaft extends out of the box body and is connected to a hydraulic motor. An arc-shaped cavity is provided on the eccentric block, and an arc-shaped sealing cover is provided on the outer side of the arc-shaped cavity.

[0007] Preferably, the hydraulic inlet is located below the eccentric block, and the hydraulic outlet is located above the eccentric block.

[0008] Preferably, the hydraulic inlet is located diagonally below the eccentric block, away from the hydraulic outlet, and the hydraulic outlet is located diagonally above the eccentric block, away from the hydraulic inlet.

[0009] Preferably, the arc-shaped cavity is filled with nitrogen gas, and the arc-shaped sealing cover is provided with an injection hole, which is sealed with a plug.

[0010] Preferably, both the first and second transmission shafts are rotatably connected to the housing via bearings.

[0011] Preferably, a cooling device is connected between the hydraulic inlet and the hydraulic outlet via a pipeline.

[0012] The beneficial effects of this utility model are as follows:

[0013] This vibratory box features two circular eccentric blocks to prevent the hydraulic oil from creating rotational resistance, resulting in smoother rotation and improved performance. The box is filled with hydraulic oil, which is discharged to the outside for cooling through the outlet and then reintroduced into the box through the inlet, creating a circulating flow. This oil-immersed external circulation forced cooling method effectively cools components such as the driven gear, drive gear, and bearings, extending their service life without requiring downtime and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the vibration box.

[0015] Figure 2 This is a cross-sectional view of the vibration box.

[0016] Figure 3 This is a partial sectional view of the vibration box.

[0017] Figure 4 This is a three-dimensional schematic diagram of the eccentric block.

[0018] Figure 5 This is a front view of the eccentric block.

[0019] Figure 6 for Figure 5 Rotated sectional view at point AA.

[0020] In the diagram: 1. Housing; 2. Hydraulic oil inlet; 3. Hydraulic oil outlet; 4. Eccentric block; 5. First transmission shaft; 6. Second transmission shaft; 7. Driven gear; 8. Drive gear; 9. Hydraulic motor; 10. Arc-shaped cavity; 11. Arc-shaped sealing cover; 12. Sealing plug; 13. Bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-6 This utility model provides a technical solution: a vibration box, including a box body 1, with a hydraulic oil inlet 2 and a hydraulic oil outlet 3 connected to one side of the box body 1, and two symmetrically arranged eccentric blocks 4 inside the box body 1. The eccentric blocks 4 are circular in shape. A first transmission shaft 5 is connected to the middle of one eccentric block 4, and a second transmission shaft 6 is connected to the middle of the other eccentric block 4. A driven gear 7 is connected to the second transmission shaft 6, and a driving gear 8 that meshes with the driven gear 7 is connected to the first transmission shaft 5. One end of the first transmission shaft 5 extends out of the box body 1 and is connected to a hydraulic motor 9. An arc-shaped cavity 10 is provided on the eccentric block 4, and an arc-shaped sealing cover plate 11 is provided on the outer side of the arc-shaped cavity 10.

[0023] By setting the two eccentric blocks 4 to a circular shape, the hydraulic oil prevents the eccentric blocks 4 from generating resistance to rotation, making the eccentric blocks 4 rotate more smoothly and improving working performance. The hydraulic oil is fully immersed in the housing 1, and the hydraulic oil inside the housing 1 is discharged to the outside for cooling through the hydraulic oil outlet 3. The cooled hydraulic oil is discharged back into the housing 1 through the hydraulic oil inlet 2, forming a hydraulic oil circulation effect. The driven gear 7, the driving gear 8, and the bearing 13 inside the housing 1 are cooled by the oil immersion external circulation forced cooling method, which improves the cooling effect, extends the service life, and does not require machine downtime, thus improving working efficiency.

[0024] To facilitate uniform cooling, in this embodiment, preferably, the hydraulic oil inlet 2 is located below the eccentric block 4, and the hydraulic oil outlet 3 is located above the eccentric block 4. The purpose is to discharge hydraulic oil into the housing 1 through the hydraulic oil inlet 2 and discharge the hydraulic oil from the housing 1 through the hydraulic oil outlet 3, thereby allowing the hydraulic oil to flow upward from the bottom of the housing 1, gradually absorbing heat and ensuring uniform cooling of all parts inside the housing 1, avoiding local overheating.

[0025] To facilitate extending the residence time of hydraulic oil and reduce dead zones in flow, in this embodiment, preferably, the inlet hydraulic oil port 2 is located diagonally below the eccentric block 4 away from the outlet hydraulic oil port 3, and the outlet hydraulic oil port 3 is located diagonally above the eccentric block 4 away from the inlet hydraulic oil port 2. The purpose is that by placing the outlet hydraulic oil port 3 diagonally above the inlet hydraulic oil port 2, the diagonal flow path is longer than the vertical flow, increasing the residence time of hydraulic oil in the housing 1, improving the cooling effect, and the diagonal layout avoids the formation of stagnant areas in the corners of the hydraulic oil, ensuring sufficient circulation of the hydraulic oil.

[0026] To prevent hydraulic oil from contacting oxygen and thus oxidizing it, in this embodiment, preferably, the arc-shaped cavity 10 is filled with nitrogen, and the arc-shaped sealing cover 11 is provided with an air injection hole and a sealing plug 12. The purpose is to fill the arc-shaped cavity 10 with nitrogen, thereby venting the air inside the arc-shaped cavity 10 and preventing air from leaking out of the arc-shaped cavity 10 and coming into contact with the hydraulic oil, thus preventing the hydraulic oil from oxidizing.

[0027] In order to facilitate and improve the smoothness of rotation of the first transmission shaft 5 and the second transmission shaft 6, in this embodiment, preferably, both the first transmission shaft 5 and the second transmission shaft 6 are rotatably connected to the housing 1 through bearings 13.

[0028] To improve the cooling effect, in this embodiment, preferably, a cooling device is connected between the hydraulic oil inlet 2 and the hydraulic oil outlet 3 via a pipeline. The purpose is to discharge the hydraulic oil inside the housing 1 to the external cooling device through the hydraulic oil outlet 3, thereby cooling the hydraulic oil. The cooling device can be an air-cooled device. The cooled hydraulic oil is then discharged back into the housing 1 through the hydraulic oil inlet, and the hydraulic oil circulates and cools, thus improving the cooling effect.

[0029] The working principle and usage process of this utility model are as follows: The hydraulic motor 9 drives the drive gear 8 to rotate through the first transmission shaft 5. At the same time, the drive gear 8 rotates through the driven gear 7, which drives the second transmission shaft 6 to rotate, thereby causing the two eccentric blocks 4 to rotate in opposite directions. The lateral centrifugal forces generated by the two eccentric blocks 4 cancel each other out, while the vertical centrifugal forces are superimposed on each other, thereby causing the vibration box to vibrate vertically up and down. By setting the shape of the two eccentric blocks 4 to be circular, the hydraulic oil is prevented from generating resistance to the rotation of the eccentric blocks 4, making the rotation of the eccentric blocks 4 smoother and improving the working performance. The hydraulic oil is fully immersed in the box 1, and the hydraulic oil inside the box 1 is discharged to the outside for cooling through the hydraulic oil outlet 3. The cooled hydraulic oil is discharged back into the box 1 through the hydraulic oil inlet 2, forming a hydraulic oil circulation effect. The driven gear 7, drive gear 8 and bearing 13 inside the box 1 are cooled by the oil immersion external circulation forced cooling method, which improves the cooling effect, extends the service life and does not require downtime, thus improving working efficiency.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vibration box, comprising a box body (1), characterized in that: The housing (1) has a hydraulic oil inlet (2) and a hydraulic oil outlet (3) connected to one side, and two symmetrically arranged eccentric blocks (4) inside. The eccentric blocks (4) are circular in shape. One of the eccentric blocks (4) is connected to a first transmission shaft (5) in the middle, and the other eccentric block (4) is connected to a second transmission shaft (6) in the middle. A driven gear (7) is connected to the second transmission shaft (6). A driving gear (8) that meshes with the driven gear (7) is connected to the first transmission shaft (5), and one end of the first transmission shaft (5) extends out of the housing (1) and is connected to a hydraulic motor (9). An arc-shaped cavity (10) is provided on the eccentric block (4), and an arc-shaped sealing cover plate (11) is provided on the outside of the arc-shaped cavity (10).

2. The vibration box according to claim 1, characterized in that: The hydraulic inlet (2) is located below the eccentric block (4), and the hydraulic outlet (3) is located above the eccentric block (4).

3. The vibration box according to claim 2, characterized in that: The hydraulic inlet (2) is located at the lower side of the eccentric block (4) away from the hydraulic outlet (3), and the hydraulic outlet (3) is located at the upper side of the eccentric block (4) away from the hydraulic inlet (2).

4. The vibration box according to claim 1, characterized in that: The arc-shaped cavity (10) is filled with nitrogen gas, and the arc-shaped sealing cover plate (11) is provided with an injection hole, and the injection hole is provided with a sealing plug (12).

5. The vibration box according to claim 1, characterized in that: The first transmission shaft (5) and the second transmission shaft (6) are rotatably connected to the housing (1) through bearings (13).

6. The vibration box according to claim 1, characterized in that: A cooling device is connected between the hydraulic inlet (2) and the hydraulic outlet (3) via a pipeline.

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