Coaxial rotation eccentric vibration electric tool

Abstract

Provided is a coaxial rotation eccentric vibration electric tool. The invention relates to an electric tool used in soil and gravel. The device is mainly suitable for tunnel cleaning, greening construction, seedling transplanting and other construction operations related to the use in soil and gravel. A vibration part consists of a frame, a vibration box and a spring, a power part consists of a motor, a telescopic universal joint transmission shaft and a pin shaft, an operation part consists of a handle, a cutter mounting rod and a cutter, and the three parts form the whole machine. The vibration box is mounted on the frame, and the spring is mounted between the vibration box and the frame to form a vibration part; the motor is fixed on the frame and transmits power to the vibration box through the telescopic universal joint transmission shaft and the pin shaft, the operating handle is fixed on the frame, the cutter is fixed on the vibration box through the cutter mounting rod, and various cutters can be replaced through the cutter mounting rod. The machine is compact in structure, concentrated in inertia force, easy to manufacture, light and convenient to operate and suitable for being used in soil and gravel.

Description

Technical Field

[0001] This invention relates to an electric tool used in soil and gravel. It is mainly suitable for construction operations involving soil and gravel, such as tunnel cleaning, landscaping construction, and seedling transplantation. Background Technology

[0002] Specialized tools are less common; in practice, various tools are used, such as impact-type electric picks. These tools have high unidirectional power, making it easy to enter the soil but difficult to remove it. Another type is crank-type mechanical vibration, such as handheld tree diggers. These tools have a simple structure and are relatively lightweight, but lack inertia and become insufficient in power when resistance suddenly increases. There is also a type of dual-axis eccentric vibration, similar to handheld tree diggers. These tools are suitable for use in soil and gravel, but due to their non-compact structure, their size and weight are difficult to control, making them inconvenient to operate. Summary of the Invention

[0003] The purpose of this invention is to provide an electric tool for industries such as tunnel cleaning, landscaping construction, and seedling transplantation. This machine has a reasonable design, simple structure, is easy to operate, and has significantly improved performance. It is suitable for use in soil and gravel environments. This invention is implemented as follows: it mainly includes a handle, frame, vibrating box, motor, telescopic universal joint drive shaft, spring, pin, bolt, nut, tool mounting rod, and tool. The vibrating box includes a rotating shaft, bushing, bevel gear, bevel gear shaft, eccentric block, key, bearing, and guide sleeve. The handle 1 is mounted on the frame 13 and fixed by nut 2; the motor 3 is mounted on the frame 13 and fixed by bolt 4; the handle 14 is mounted on the frame 13 and fixed by bolt 15. Pin 5 is installed in the output pin hole of the motor 3 and the upper pin hole of the telescopic universal joint drive shaft 6; pin 7 is installed in the lower pin hole of the telescopic universal joint drive shaft 6 and the upper pin hole of the bevel gear shaft 39 of the vibrating box. The vibration box 11 is mounted on the frame 13. Guide sleeves 21 are fixed in the through holes on both sides of the box body 25 of the vibration box 11. The guide sleeves 21 are fitted onto the round steel tube 18 of the frame 13 and can reciprocate along the center line of the round steel tube 18. Springs 12 are mounted on the round steel tube 18 of the frame. The upper spring is limited by the stop block 20, and the lower spring is limited by the connecting square tube 22. The tool mounting rod 9 is fixed to the bottom of the vibration box 11 by bolts 8. The tool 10 is mounted in the lower opening of the tool mounting rod 9 and is fastened by bolts 16. Inside the vibration box 11, the rotating shaft 26 is horizontally mounted on the box body 25 and supported by bearings 27, allowing it to rotate freely. The bushing 31 is mounted on the rotating shaft 26 and supported by bearings 30, allowing it to rotate around the rotating shaft 26. Eccentric blocks 29 and 37, and bevel gear 35 are connected to the rotating shaft 26 by keys 28, 38, and 36 respectively, and rotate together with the rotating shaft 26. Eccentric block 33 and bevel gear 34 are connected to the bushing 31 by key 32, and rotate together with the bushing 31 around the rotating shaft 26. A thrust bearing 41 is installed on the end face of the bushing 31 to limit its position. The bevel gear shaft 39 is vertically mounted on the upper part of the vibration box 11 and supported by bearing 40. The upper pin hole is connected to the telescopic universal joint drive shaft 6 through pin 7. The bevel gear shaft 39 meshes with bevel gear 34 and bevel gear 35 simultaneously. When the output shaft of the motor 3 rotates, it drives the telescopic universal joint drive shaft 6 to rotate. The telescopic universal joint drive shaft 6 drives the bevel gear shaft 39 to rotate. The bevel gear shaft 39 drives the bevel gear 34 and bevel gear 35 to rotate simultaneously around the axis of the rotating shaft 26, with the two bevel gears rotating in opposite directions. The rotating shaft 26, bevel gear 35, eccentric block 29, and eccentric block 37 rotate together, while the bushing 31, bevel gear 34, and eccentric block 33 rotate in the opposite direction. The two sets of eccentric blocks rotating in opposite directions generate inertial forces. The horizontal components of these inertial forces cancel each other out, while the vertical components combine. This combined force causes the vibrating box 11 to vibrate up and down. The vibrating box 11 drives the tool mounting rod 9 and the tool 10 to vibrate up and down together, and the tool 10 vibrates to cut the soil, thus completing the operation. The telescopic universal joint drive shaft 6 rotates and extends / retracts simultaneously, continuously transmitting power to the vibrating box 11.The spring 12 is installed between the vibration box 11 and the frame 13 to buffer the vibration, reduce the transmission of vibration to the frame and handle, and maintain the stability of the vibration system. Attached image description: Figure 1 This is the front view of the present invention. Figure 2 This is a side view of the present invention. Figure 3 This is an enlarged view of the frame 13 of the present invention. Figure 4 This is an enlarged view of the vibration box 11 of the present invention. Figure 5 This is a top view of the present invention. Figure 6 This is a perspective view of the present invention.

[0004] Main view Figure 1 Side view Figure 2 This is an overall structural view of the invention. A vibration box 11 is mounted on a frame 13, supported vertically by a set of four springs 12, forming the vibration section. A motor 3 is mounted on the frame 13, and the vibration box 11 and the output shaft of the motor 3 are connected by a pin 5, a telescopic universal joint drive shaft 6, and a pin 7, forming the power section. Handles 1 and 14 are fixed to the frame 13, forming the operating section. A tool mounting rod 9 is fixed to the bottom of the vibration box 11, and a tool 10 is installed in the lower opening of the tool mounting rod 9, forming the working section; together, they form the complete machine.

[0005] Enlarged image Figure 3 This is a detailed structural diagram of frame 13. Connecting plates 17 are installed at the upper ends of two round steel pipes 18 and fixed by nuts 2; connecting square tubes 22 are installed at the lower ends of the round steel pipes 18 and fixed by nuts 23, forming the frame. A guide sleeve 24 is installed in the round hole of the connecting square tube 22 to assist in guiding the tool mounting rod 9. A stop block 20 is installed on the round steel pipes 18 and fixed by bolts 19. The stop block 20 provides an upper limit for the spring 12. The connecting square tube 22 provides a lower limit for the spring 12.

[0006] Enlarged image Figure 4This is a detailed structural diagram of the vibration box 11. The rotating shaft 26 is horizontally mounted on the box body 25 and supported by bearing 27. It is connected to eccentric blocks 29 and 37, and bevel gear 35 by keys 28, 38, and 36, forming an eccentric rotation system. The bushing 31 is mounted on the rotating shaft 26 and supported by bearing 30. It is connected to eccentric block 33, bushing 31, and bevel gear 34 by key 32, forming another eccentric rotation system. The bevel gear shaft 39 is vertically mounted on the upper part of the vibration box 11 and supported by bearing 40. Its upper pin hole is connected to the telescopic universal joint drive shaft 6 via pin 7. The bevel gear shaft 39 simultaneously meshes with bevel gears 34 and 35, providing power to both eccentric rotation systems.

[0007] Top view Figure 5 3D view Figure 6 This is an auxiliary view. Implementation of the invention: When using this machine, first turn on the power switch 42 to start the motor, and then operate it. For vertical operation, use handle 1 alone, repeatedly pressing down or lifting it. During this process, the vibrating blade 13 cuts the soil. For horizontal or inclined operation, use handles 1 and 14 simultaneously, adjust the inclination angle, and then move the machine back and forth to cut the soil. After operation, turn off the power switch 42. To change blades, loosen and remove bolt 16, and remove blade 10; insert the replacement blade into the opening of the blade mounting rod 9, and tighten bolt 16. The connecting plate 17 has a spare mounting hole 43, which can be used to replace other power units when needed.

[0008] The implementation of this invention makes working in soil and gravel much easier and more convenient. Due to the reduction in the size and weight of the tool and the concentration of inertial force, it is easier to operate and the work efficiency is improved.

Claims

1. A power tool for use in soil and gravel environments, mainly comprising a handle, frame, vibratory box, spring, tool mounting rod, tool, motor, telescopic universal joint drive shaft, pin, bolt, and nut; the vibratory box includes a rotating shaft, bushing, bevel gear, bevel gear shaft, eccentric block, key, bearing, and guide sleeve, characterized in that... Handle 1, motor 3, and handle 14 are fixed to frame 13 by nuts 2, bolts 4, and bolts 15, respectively. Pin 5 is installed in the output pin hole of motor 3 and the upper pin hole of telescopic universal joint drive shaft 6. Pin 7 is installed in the lower pin hole of telescopic universal joint drive shaft 6 and the upper pin hole of vibrating box bevel gear shaft 39. Vibrating box 11 is installed on frame 13 and can reciprocate along the center line of round steel tube 18 of frame 13. Spring 12 is installed between frame 13 and vibrating box 11. Tool mounting rod 9 is fixed to the bottom of vibrating box 11 by bolts 8. Tool 10 is installed in the lower opening of tool mounting rod 9 and fixed by bolts 16.

2. The power tool according to claim 1, characterized in that... The rotating shaft 26 is horizontally mounted on the housing 25 and supported by the bearing 27. The bushing 31 is mounted on the rotating shaft 26 and supported by the bearing 30. The eccentric block 29, eccentric block 37, and bevel gear 35 are connected to the rotating shaft 26 by the keys 28, 38, and 36 respectively, and rotate together with the rotating shaft 26. The eccentric block 33 and bevel gear 34 are connected to the bushing 31 by the key 32 and rotate together with the bushing 31 around the rotating shaft 26. The end face of the bushing 31 is fitted with a thrust bearing 41. The bevel gear shaft 39 is vertically mounted on the vibration box 11 and supported by the bearing 40. The upper pin hole is connected to the pin hole of the telescopic universal joint drive shaft 6 by the pin 7. The bevel gear shaft 39 meshes with both bevel gear 34 and bevel gear 35. When the bevel gear shaft 39 rotates, it drives both bevel gear 34 and bevel gear 35 to rotate around the axis of the rotating shaft 26.

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