Coaxial rotating eccentric vibrator

Abstract

The invention relates to a coaxial rotating eccentric vibrator. A hydraulic motor drives two groups of eccentric blocks capable of reversely rotating around the same axis to rotate, and inertia force generated by rotation of the eccentric blocks is synthesized to enable a rotating shaft to generate linear vibration in a certain radial direction. The device is composed of a hydraulic motor 1, a flange plate 2, a box body 3 and an internal excitation part. A shaft output spline hole 17 of the hydraulic motor 1 is connected with a shaft head spline of the rotating shaft 5, and the hydraulic motor 1 is fixed to the box body 3. The flange 2 is fixed at the bottom of the box 3. The tool can be installed on the flange plate 2 to form a vibration tool for use. The vibrator can also be installed on other machinery equipment through the flange plate 2 to be used as a vibration source. The machine is compact in structure, easy to manufacture, concentrated in inertia force and suitable for the field with the requirement for linear vibration of inertia.

Description

TECHNICAL FIELD

[0001] The present invention is a coaxial rotating eccentric vibrator. Two groups of eccentric blocks can rotate reversely around the same axis driven by a motor. The resultant inertial force of the eccentric blocks' rotation makes the rotating shaft vibrate along a certain radial straight line. The vibrator is suitable for technical fields requiring vibration caused by inertial force. BACKGROUND

[0002] The common inertial straight-line vibrator is composed of eccentric blocks installed on two rotating shafts and a pair of synchronous gears. It is commonly used in the inertial vibration pile hammer. The coaxial rotating eccentric vibrator of the present invention has the same function as the common vibrator, and can cancel the synchronous gears, reduce the volume, and make the structure compact and the impact force concentrated. SUMMARY

[0003] The present invention provides a coaxial rotating eccentric vibrator. The vibrator has reasonable design, simple structure, and significantly improved performance. The present invention is composed of a hydraulic motor, a flange plate, a box, a rotating shaft, a spline, a bevel gear shaft, a bevel gear, an eccentric block, a bearing, a key, and a bolt. The spline hole 17 of the output shaft of the hydraulic motor 1 is connected with the spline of the shaft head of the rotating shaft 5, and the hydraulic motor 1 is fixed on one end of the box 3. The flange plate 2 is arranged at the bottom of the box 3. Inside the box 3, the rotating shaft 5 is installed along the center line of the box 3 on the box 3 and is supported by the bearing 6, which can rotate freely. The shaft sleeve 10 is sleeved on the rotating shaft 5 and is supported by the bearing 9, which can rotate around the rotating shaft 5. The eccentric blocks 8, 15, and the bevel gears 14 are connected with the rotating shaft 5 by the keys 7, 16, and 11, respectively, and rotate with the rotating shaft 5; the eccentric blocks 12 and the bevel gears 13 are connected with the shaft sleeve 10 by the key 11 and rotate with the shaft sleeve 10 around the rotating shaft 5. The shaft sleeve 10 is limited by the thrust bearing 4 installed on the end face of the shaft sleeve 10. The bevel gear shaft 19 is arranged in the vertical direction of the axis of the rotating shaft 5, and the bevel gear shaft 19 is fixed on the box 3 and is supported by the bearing 18. The bevel gear shaft 19 is simultaneously meshed with the bevel gears 13 and 14, realizing the simultaneous rotation of the three. The spline shaft head of the bevel gear shaft 19 can be connected with the spline hole 17 of the output shaft of the hydraulic motor 1. When the output shaft of the hydraulic motor 2 rotates, it drives the rotating shaft 5 to rotate through the spline 17. The rotating shaft 5 drives the shaft sleeve 10 to rotate through the meshing of the bevel gear shaft 19, the bevel gear 13, and the bevel gear 14, and the rotating direction of the shaft sleeve 10 is opposite to that of the rotating shaft 5, and the rotating speed is the same. In this way, the rotating shaft 5, the bevel gear 14, the eccentric block 8, and the eccentric block 15 rotate together, while the shaft sleeve 10, the bevel gear 13, and the eccentric block 12 rotate in the opposite direction. The two groups of eccentric blocks rotating in opposite directions generate inertial force, the horizontal component of the inertial force cancels out, and the vertical component combines, and the combined component makes the box 3 vibrate up and down. The vibration is output through the flange plate 2 fixed on the bottom of the box 3.

[0004] The hydraulic motor 1 can be installed in another way. For example, in order to obtain a relatively large reduction ratio, the spline hole 17 of the output shaft of the hydraulic motor 1 is coupled with the spline shaft head of the bevel gear shaft 19, and the hydraulic motor 1 is fixed on the box 3. When the output shaft of the hydraulic motor 1 rotates, the bevel gear shaft 19 rotates, and through the meshing of the bevel gears 13 and 14, the rotating shaft 5 and the shaft sleeve 10 rotate reversely. The linear vibration of the box 3 can also be realized. The rotating speed is determined by the gear number of the bevel gear shaft 19 and the bevel gears 13 and 14, and the reduction ratio is increased. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 is the front view of the present application. is the overall structure view of the present application. The hydraulic motor 1 is installed on the side end face of the box 3, and the flange plate 2 is installed on the bottom of the box 3, forming the whole machine.

[0006] Figure 2 Figure 3 is the sectional view of the present application. is the internal structure view of the present application. The rotating shaft 5 is installed along the center line of the box 3 on the box 3 and is supported by the bearing 6. The keys 7 and 16 couple the eccentric blocks 8 and 15 and the bevel gear 14 to form a set of eccentric rotating systems. The shaft sleeve 10 is sleeved on the rotating shaft 5 and is supported by the bearing 9. The key 11 couples the eccentric block 12, the shaft sleeve 10 and the bevel gear 13 to form another set of eccentric rotating systems. The bevel gear shaft 19 is installed perpendicularly to the center line of the rotating shaft 5 on the box 3 and is supported by the bearing 18. The bevel gear shaft 19 is meshed with the bevel gears 13 and 14 at the same time, forming a simultaneous rotating mechanism. The spline hole of the output shaft of the hydraulic motor 1 is coupled with the rotating shaft 17. Power is provided for the two sets of eccentric rotating systems.

[0007] Figure 4 is the sectional view of another installation mode of the hydraulic motor 1. In order to obtain a relatively large reduction ratio, the spline hole 17 of the output shaft of the hydraulic motor 1 is coupled with the spline shaft head of the bevel gear shaft 19, forming another installation mode of the hydraulic motor 1.

[0008] Figure 5 Figure 6 is the perspective view of the present application. is the auxiliary view.

[0009] IMPLEMENTATION OF THE INVENTION

[0010] The present application can be implemented in two ways. One is to install the tool on the upper surface of the flange plate 2 to form a vibrating tool. The other is to install the vibrator on other machines and equipment through the flange plate 2 as a vibration source. No matter which way is adopted, the advantages of the vibrator, such as small size, compact structure and concentrated impact force, can be embodied.​​

Claims

1. A coaxial rotary eccentric vibrator, mainly comprising a hydraulic motor, a flange, a housing, a rotating shaft, a spline, a bevel gear shaft, a bevel gear, an eccentric block, a bearing, a key, and bolts, characterized in that... The splined hole 17 of the output shaft of the hydraulic motor 1 is connected to the splined shaft head of the rotating shaft 5. The hydraulic motor 1 is fixed on the housing 3, and the flange 2 is fixed to the bottom of the housing 3. The rotating shaft 5 is mounted on the housing 3 along the center line of the housing 3 and is supported by the bearing 6, allowing it to rotate freely. The bushing 10 is fitted on the rotating shaft 5 and supported by the bearing 9, allowing it to rotate around the rotating shaft 5. The eccentric blocks 8 and 15, and the bevel gear 14 are connected to the rotating shaft 5 by the keys 7 and 16, respectively, and rotate together with the rotating shaft 5. The eccentric block 12 and the bevel gear 13 are connected to the bushing 10 by the key 11 and rotate together with the bushing 10 around the rotating shaft 5. The end face of the bushing 10 is equipped with a thrust bearing 4 to limit the bushing 10. A bevel gear shaft 19 is set in the direction perpendicular to the axis of the rotating shaft 5. The bevel gear shaft 19 is mounted on the housing 3 and supported by the bearing 18. The bevel gear shaft 19 meshes with both the bevel gear 13 and the bevel gear 14. When the output shaft of the hydraulic motor 1 rotates, it drives the rotating shaft 5, the bevel gear 14 to rotate, the bevel gear 14 drives the bevel gear shaft 19, the bevel gear 13 to rotate, and the bevel gear 13 drives the bushing 10 to rotate around the rotating shaft 5. The rotating shaft 5 and the bushing 10 rotate in opposite directions.

2. The coaxial rotary eccentric vibrator according to claim 1, characterized in that... The output shaft spline hole 17 of the hydraulic motor 1 is connected to the spline shaft head of the bevel gear shaft 19. The hydraulic motor 1 is fixed on the housing 3. When the output shaft of the hydraulic motor 1 rotates, it drives the bevel gear shaft 19 to rotate. The bevel gear shaft 19 drives the bevel gear 14, bevel gear 13, and bushing 10 to rotate around the rotating shaft 5 at the same time. The rotating shaft 5 and bushing 10 rotate in opposite directions. This connection has a relatively large speed reduction.

3. In the coaxial rotary eccentric vibrator according to claims 1 and 2, the hydraulic motor 1 is not limited to a hydraulic motor, and can be powered by a gasoline engine, electric motor, or other similar power source.

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