A motor-driven double-knife cutting device

Abstract

The present invention relates to the technical field of power-driven cutting for hedges, lawns, and turf, and particularly relates to a power-driven double-knife cutting device. In the present invention, the motor-driven double-knife cutting device is structurally connected through a crankshaft assembly, a connecting rod, a rocker, a tool holder, a blade fixing plate, a double-finger knife fixing plate, a blade, a double-finger upper blade, a double-finger lower blade, a blade driving plate, and a double-finger knife driving plate, converting the rotational motion of the motor into the clamping and cutting of hedge branches and turf grass stems by the blade and the double-finger upper blade and double-finger lower blade simultaneously. It has high cutting efficiency, the cut materials do not fly around and are convenient to collect, and can replace the existing hedge and turf trimming technologies. Therefore, the motor-driven double-knife cutting device is an efficient hedge and turf trimming device.

Description

Technical Field

[0001] The present invention relates to the technical field of power-driven cutting for pruning hedges, lawns, and turf, and particularly to a power-driven double-knife cutting device. Background Art

[0002] At present, the power cutting devices for repairing branches and grass stems of hedges, lawns, and turf are all driven by electric or hydraulic motors for single or multiple groups of rotating cutter disks or chain cutters. For the former, the electric or hydraulic motor rides over the transmission shaft to connect to the cutter disk, and for the latter, the electric or hydraulic motor connects to the sprocket transmission device through the transmission shaft. The disadvantages of these two types of cutting devices are that due to cutting only from one direction and without a clamping function, their cutting efficiency is low, and the cut materials are prone to splashing. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a rotary motor-driven double-knife cutting device. The rotary motor-driven double-knife cutting device includes: a box body, a motor, a crankshaft assembly (including: a drive plate, a drive shaft, an intermediate plate, a tail plate, a positioning pin, a bolt), a connecting rod, a pin shaft, a rocker, a rocker gland, a support shaft, a bolt, a bearing, a tool holder, a blade, a blade fixing plate, a blade drive plate, a rivet, a double-finger upper blade, a double-finger lower blade, a double-finger blade fixing plate, a double-finger blade drive plate, an upper blade guide rail, and a lower blade guide rail.

[0004] The motor is positioned through a coaxial hole that is positioned with the tail plate of the crankshaft assembly and fixed to the housing by bolts. The output shaft of the motor is positioned and connected to the drive plate of the crankshaft assembly. The drive shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the drive plate by a positioning pin and fixed with bolts. Another drive shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the tail plate by a positioning pin and fixed with bolts. The two drive shafts are respectively positioned with the two side faces of the intermediate plate. The positions of the centers of the two drive shafts are respectively on circles with the drive plate of the crankshaft assembly as the center and an eccentricity as the radius on the two faces of the intermediate plate and are positioned 180 degrees apart. The crankshaft assembly is composed of a drive plate, two drive shafts, an intermediate plate, and a tail plate combined by positioning pins and bolts. The tail plate of the crankshaft assembly is connected to the coaxial hole of the housing where the motor is connected. One drive shaft of the crankshaft assembly is connected to the connecting rod through a bearing, and another drive shaft of the crankshaft assembly is connected to the connecting rod through a bearing. The two connecting rods are respectively connected to the two rocker arms through bearings and pin shafts. The two rocker arms are respectively connected to the housing through bearings and a support shaft. The tool holder is respectively connected to the rocker arm through bearings and pin shafts. One tool holder is connected to the blade fixing plate and the blade drive plate by bolts. The blade is connected to the blade fixing plate by rivets. The double-finger upper blade and the double-finger lower blade are connected to the double-finger tool fixing plate by bolts. Through the shape and size design of the blade fixing plate and the double-finger tool fixing plate, the blade fixed on the blade fixing plate is inserted into the middle of the double-finger upper blade and the double-finger lower blade fixed on the double-finger tool fixing plate. By changing the thickness of the adjusting piece between the blade drive plate and the blade fixing plate, the gap between the blade and the upper double-finger blade and the lower double-finger blade is adjusted to obtain the best cutting efficiency. The motor drives the crankshaft assembly to rotate, and through the connecting rod and rocker arm mechanism, the rotational motion is converted into the staggered reciprocating motion of the blade, the upper double-finger blade, and the lower double-finger blade, so that the branches or grass stems entering the blade cutting area are clamped and cut by the blade, the upper double-finger blade, and the lower double-finger blade, completing the trimming of hedges, grasslands, and lawns.

[0005] The specific type, parameters, etc. of the motor need to be selected according to specific working conditions. The electric motor, i.e., the electric motor, is connected to the electric control system through its own power interface. The hydraulic motor is connected to the hydraulic system through its own liquid inlet and liquid outlet.

[0006] The crankshaft assembly connected to the motor consists of a drive plate, a drive shaft, an intermediate plate, a tail plate, a positioning pin, and a bolt. The motor is positioned through a coaxial hole that positions the tail plate of the crankshaft assembly and is fixed to the housing with bolts. The output shaft of the motor is positioned and connected to the drive plate of the crankshaft assembly. The drive shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the drive plate with a positioning pin and fixed with bolts. Another drive shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the tail plate with a positioning pin and fixed with bolts. The two drive shafts are positioned on the two sides of the intermediate plate respectively. The positions of the centers of the two drive shafts are on two faces of the intermediate plate, on circles centered on the crankshaft drive plate with an eccentricity as the radius, and are positioned 180 degrees apart. The crankshaft assembly is composed of two drive shafts, a drive plate, an intermediate plate, and a tail plate combined with positioning pins and bolts. The tail plate of the crankshaft assembly is connected to the coaxial hole of the housing connected to the motor, and the crankshaft assembly is driven by the motor output shaft to rotate in the housing.

[0007] One drive shaft of the crankshaft assembly is connected to the connecting rod through a bearing, and the other drive shaft of the crankshaft is connected to the connecting rod through a bearing. The two connecting rods are respectively connected to the two rockers through bearings and pin shafts. The two rockers are respectively connected to the housing through bearings and a support shaft. The two tool holders are respectively connected to the rockers through bearings and pin shafts. Through the connecting rods on the crankshaft assembly and the rockers connected by the connecting rods, the rotational motion of the crankshaft assembly is converted into the reciprocating and alternating motion of the two tool holders on the rockers.

[0008] The two tool holders are respectively connected to the blade fixing plate, the blade drive plate, the double-finger blade fixing plate, and the double-finger blade drive plate with bolts. The blade is fixed to the blade fixing plate with rivets. The upper double-finger blade and the lower double-finger blade are fixed to the double-finger blade fixing plate with bolts. The blade, the upper double-finger blade, and the lower double-finger blade are stacked vertically to form the clamping and cutting of branches and grass stems, and the two tool holders respectively drive the blade, the upper double-finger blade, and the lower double-finger blade to perform reciprocating and alternating motions. In the cutting space formed by the blade, the upper double-finger blade, and the lower double-finger blade, the blade, the lower double-finger blade, and the lower double-finger blade perform alternating reciprocating motions, and the branches and stems entering the cutting space are clamped and cut from two directions, completing the pruning of hedges and lawns.

[0009] An adjusting pad is connected between the tool holder and clamped between the blade fixing plate and the blade drive plate. By changing the thickness of the adjusting piece, the gap between the blade, the upper double-finger blade, and the lower double-finger blade stacked vertically is adjusted to obtain the best cutting efficiency.

[0010] The upper double-finger guide rail and the lower double-finger guide rail are respectively fixed on the upper and lower surfaces of the fixing plate protruding from the housing to support and guide the upper double-finger blade and the lower double-finger blade. Description of the Drawings

[0011] Figure 1It is an overall schematic diagram of a motor-driven double-knife cutting device provided by the present invention.

[0012] Figure 2 It is a schematic diagram of the disassembled structure of the parts of a motor-driven double-knife cutting device provided by the present invention.

[0013] Wherein:

[0014] 1. Box body; 2. Motor; 3. Crankshaft assembly; 3.1 Driving plate; 3.2 Driving plate gland; 3.3 Bolt; 3.4 Driving shaft; 3.5 Positioning pin; 3.6 Intermediate plate; 3.7 Tail plate; 4. Bearing; 5. Connecting rod; 6. Rocker; 7. Bearing; 8. Rocker gland; 9. Pin shaft; 10. Bearing; 11. Support shaft; 12. Bolt; 13. Tool holder; 14. Double-finger knife driving plate; 15. Double-finger knife fixing plate; 16. Bolt; 17. Double-finger upper blade; 18. Double-finger lower blade; 19. Bolt; 20. Rivet; 21. Blade driving plate; 22. Blade fixing plate; 23. Blade; 24. Rivet; 25. Double-finger upper guide rail; 26. Double-finger lower guide rail; 27. Bolt; 28. Adjusting pad. Specific embodiments

[0015] In order to solve the problems existing in the prior art, as Figure 1 and Figure 2 shown, the present invention provides a motor-driven double-knife hedge and lawn trimming and cutting device. The motor-driven hedge and lawn trimming and cutting device includes: box body 1; motor 2; crankshaft assembly 3; driving plate 3.1; driving plate gland 3.2; bolt 3.3; driving shaft 3.4; positioning pin 3.5; intermediate plate 3.6; tail plate 3.7; bearing 4; connecting rod 5; rocker 6; bearing 7; rocker gland 8; pin shaft 9; bearing 10; support shaft 11; bolt 12; tool holder 13; double-finger knife driving plate 14; double-finger knife fixing plate 15; bolt 16; double-finger upper blade 17; double-finger lower blade 18; bolt 19; rivet 20; blade driving plate 21; blade fixing plate 22; blade 23; rivet 24; double-finger upper guide rail 25; double-finger lower guide rail 26; bolt 27; adjusting pad 28.

[0016] The specific type and parameters of the rotary motor 2 need to be selected according to specific working conditions. The electric rotary motor, that is, the motor, is connected to the electric control system through its own power supply interface, and the hydraulic rotary motor is connected to the hydraulic system through its own liquid inlet and liquid outlet.

[0017] The crankshaft assembly 3 connected to the rotary motor 2 is composed of a drive plate 3.1, a drive plate gland 3.2, bolts 3.3, a drive shaft 3.4, a positioning pin 3.5, an intermediate plate 3.6, and a tail plate 3.7. The motor 2 is positioned with the tail plate 3.7 of the crankshaft assembly 3 and fixed to the box body 1 by bolts. The output shaft of the motor 2 is positioned and connected to the drive plate 3.1 of the crankshaft 3. The drive shaft 3.4 of the crankshaft 3 is positioned and connected to the intermediate plate 3.6 and the drive plate 3.1 by the positioning pin 3.5 and connected by bolts 3.3. Another drive shaft 3.4 of the crankshaft assembly 3 is positioned with the intermediate plate 3.6 and the tail plate 3.7 by the positioning pin 3.5 and connected by bolts 3.6. The two drive shafts 3.4 are respectively positioned on two surfaces of the intermediate plate 3.6. The positions of the centers of the two drive shafts 3.4 are respectively on two surfaces of the intermediate plate 3.6, corresponding to 180 degrees on a circle centered on the center hole of the drive plate 3.1 of the crankshaft assembly 3 and with an eccentricity as the radius. The crankshaft assembly 3 is composed of two drive shafts 3.4, a drive plate 3.1, an intermediate plate 3.6, and a tail plate 3.7 through the positioning pin 3.5 and bolts 3.3. The tail plate 3.7 of the crankshaft assembly 3 is connected to the coaxial hole of the box body 1 where the motor 2 is connected to the box body 1. The crankshaft assembly 3 is driven by the output shaft of the motor 2 to rotate in the box body 1.

[0018] One drive shaft 3.4 of the crankshaft assembly 3 is connected to the connecting rod 5 through a bearing 4, and another drive shaft 3.4 of the crankshaft assembly 3 is connected to the connecting rod 5 through a bearing 4. The two connecting rods 5 are respectively connected to the two rockers 6 through bearings 7, pin shafts 9, and rocker gland plates 8. The two rockers 6 are respectively connected to the parallel holes of the box body 1 where the crankshaft assembly 3 is connected to the box body 1 through bearings 7 and support shafts 11. The two tool holders 13 are respectively connected to the rocker 7 through bearings 7, pin shafts 9, and rocker gland plates 8. The rocker gland plate 8 and the bolt 12 respectively fix the pin shaft 9 on the rocker 6. Through the connecting rod 5 on the crankshaft assembly 3 and the rocker 6 connected by the connecting rod 5, the rotational motion of the crankshaft assembly 3 is converted into the reciprocating alternating motion of the two tool holders on the rocker 6.

[0019] The tool holders 13 are respectively connected to the blade fixing plate 22, the blade drive plate 21, the double-finger blade fixing plate 15, and the double-finger blade drive plate 14 through bolts 16. The blade 23 is fixed to the blade fixing plate 22 by rivets 24. The double-finger upper blade 17 and the double-finger lower blade 18 are fixed to the double-finger blade fixing plate 15 by bolts 19 and rivets 20. The blade 23 and the double-finger upper blade 17 and the double-finger lower blade 18 are stacked vertically to form the clamping and cutting of branches and grass stems, and drive the blade 23 and the upper double-finger blade 17 and the lower double-finger blade 18 to make corresponding reciprocating alternating motions through the tool holders 13. In the cutting space formed between the blade 23 and the upper double-finger blade 17 and the lower double-finger blade 18, through the alternating reciprocating motion of the blade 23 and the upper double-finger blade 17 and the lower double-finger blade 18, the branches and stems entering the cutting space are clamped and cut from two directions to complete the pruning of the hedge and lawn.

[0020] An adjusting pad 28 is connected between the blade holder 13 clamped between the blade driving plate 21, the double-finger blade driving plate 14 and the blade fixing plate 22, the double-finger blade fixing plate 15 to adjust the gap between the superposition of the blade 23 and the upper double-finger blade 17 and the lower double-finger blade 18 in the vertical direction to obtain the best cutting efficiency.

[0021] The double-finger upper guide rail 25 and the double-finger lower guide rail 26 are respectively fixed on the upper and lower surfaces of the fixing plate extending from the box body 1 to support and guide the double-finger upper blade 17 and the double-finger lower blade 18.

[0022] The working principle of the present invention is as follows: The motor 2 is fixed on the box body 1. One end of the crankshaft assembly 3 is connected to the output shaft of the motor 2, and the other end of the crankshaft assembly 3 is connected to the box body 1. The crankshaft assembly 3 is connected to the connecting rod 5 through the bearing 4. The connecting rod 5 is connected to the rocker 6 through the bearing 7, the pin shaft 9 and the rocker gland 8. The rocker 6 is connected to the blade holder 13 through the bearing 7, the pin shaft 9 and the rocker gland 8. The rocker 6 is connected to the box body 1 through the bearing 10 and the support shaft 11. The motor 2 provides power to the crankshaft assembly 3 through the output shaft to make the crankshaft assembly 3 rotate. The drive shaft 3.4 of the crankshaft assembly 3 converts the rotational motion of the output shaft of the motor 2 into the alternating reciprocating motion of the two blade holders 13 connected to the rocker 6 through the connecting rod 5 and the rocker 6. The blade holder 13 forms a cutting space through the blade fixing plate 22, the double-finger blade fixing plate 15, the blade driving plate 21 and the double-finger blade driving plate 14. The blade holder 13 drives the blade 23, the double-finger upper blade 17 and the double-finger lower blade 18 to make an alternating reciprocating motion in the cutting space to complete the cutting of the hedge branches and the lawn grass stems.

[0023] In the present invention, the motor-driven double-blade cutting device, through the structural connection of the crankshaft assembly, the connecting rod, the rocker, the blade holder, the blade fixing plate, the double-finger blade fixing plate, the blade, the double-finger upper blade, the double-finger lower blade, the blade driving plate, the double-finger blade driving plate, converts the rotational motion of the motor into the clamping and cutting of the hedge branches and the lawn grass stems by the blade and the double-finger upper blade and the double-finger lower blade at the same time. The cutting efficiency is high, the cut materials do not fly around and are convenient to collect, and it can replace the existing hedge and lawn trimming technologies. Therefore, the motor-driven double-blade cutting device is an efficient hedge and lawn trimming device.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A motor-driven double-knife cutting device, characterized in that, include: A housing, a motor, and a crankshaft assembly, wherein the motor is fixed to the housing, one end of the crankshaft assembly is connected to the output shaft of the motor, and the other end of the crankshaft assembly is connected to the housing; The crankshaft assembly is composed of a driving plate, bolts, a driving shaft, a locating pin, an intermediate plate, and a tail plate. The motor is positioned by the tail plate of the crankshaft assembly and fixed to the casing by bolts. The output shaft of the motor is positioned and connected to the driving plate of the crankshaft assembly. The driving shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the driving plate by the locating pin and bolted. The other driving shaft of the crankshaft assembly is positioned and connected to the intermediate plate and the tail plate by the locating pin and bolted. The two driving shafts are respectively positioned on two surfaces of the intermediate plate. The positions of the centers of the two driving shafts are respectively centered on the center hole of the driving plate of the crankshaft assembly on the two surfaces of the intermediate plate and correspond to 180 degrees on a circle with an eccentric distance as a radius. The tail plate of the crankshaft assembly is connected to the coaxial hole of the casing connected to the motor, and the crankshaft assembly is driven to rotate in the casing by the output shaft of the motor. One driving shaft of the crankshaft assembly is connected to a connecting rod through a bearing, and another driving shaft of the crankshaft assembly is connected to a connecting rod through a bearing. The two connecting rods are respectively connected to two rockers through bearings, pins and rocker covers. The two rockers are respectively connected to the housing through bearings and supporting shafts. The two tool clamps are respectively connected to the rockers through bearings, pins and rocker covers. The rocker covers and bolts respectively fix the pins on the rockers. The rotational motion of the crankshaft assembly is converted into a reciprocating and staggered motion of the two tool clamps on the rockers through the connecting rod on the crankshaft assembly and the rockers connected to the connecting rods. The knife clamp is connected with the blade fixing plate, the blade driving plate and the double-finger knife fixing plate and the double-finger knife driving plate respectively by bolts, the blade is fixed to the blade fixing plate by rivets, the double-finger upper blade and the double-finger lower blade are fixed to the double-finger knife fixing plate by bolts and rivets, the blade and the double-finger upper blade and the double-finger lower blade are superimposed in the vertical direction to clamp and cut branches and grass stems, and the blade clamp drives the blade and the double-finger upper blade and the double-finger lower blade to perform corresponding reciprocating and staggered motions, and the cutting space formed between the blade and the double-finger upper blade and the double-finger lower blade is clamped and cut from two directions by the blade and the double-finger upper blade and the double-finger lower blade to complete the trimming of hedges and lawns; An adjustment pad is connected between the blade driving plate and the blade fixing plate. By changing the thickness of the adjustment pad, the gap between the blade and the double-finger upper blade and the double-finger lower blade in the vertical direction is adjusted to obtain the best cutting efficiency. A double-finger upper guide rail and a double-finger lower guide rail are respectively fixed on the upper and lower sides of the fixed plate extending out of the box body, and are used to support and guide the double-finger upper blade and the double-finger lower blade.

Images