Cutting mechanism of a branch chipper

Abstract

The present application belongs to the technical field of shredder equipment, and relates to a cutting mechanism of a shredder. The cutting mechanism of the shredder includes a driving source, a tool and a knife shaft. The output shaft of the driving source is directly or indirectly connected to the knife shaft. The tool includes a front knife disc, a rear knife disc and a cutter. The front knife disc and the rear knife disc are arranged on the knife shaft at intervals along the axial direction of the knife shaft. A number of cutters are arranged between the front knife disc and the rear knife disc. Each cutter is distributed at intervals along the circumference of the knife shaft, and there is a spacing between the side of the cutter close to the knife shaft and the outer side wall of the knife shaft. Since the cutters are distributed at intervals and there is a spacing between the cutter and the knife shaft, the cutter is partially hollow, which can play a chip removal role, reduce the risk of wood chip blockage, reduce the working current, and thus reduce the cutting load, and increase the service life of the cutter and the entire machine.

Description

Technical Field

[0001] The present application belongs to the technical field of branch shredder equipment and relates to a cutting mechanism of a branch shredder. Background Art

[0002] A branch chipper is a piece of mechanical equipment, mainly composed of a motor, a transmission mechanism, a blade, a knife edge, etc. It is mainly used to crush thicker branches and small trees into small pieces or thin strips for storage and processing. It is mainly used in landscaping, orchard processing, road greening and crop processing. It can also be used in papermaking, high-density board, fiberboard, particleboard, sawdust board, edible fungus cultivation, wood pellets, machine-made charcoal, boiler gas furnace combustion and other industrial fields.

[0003] Existing branch chippers mostly use the method of squeezing and cutting off the branches during cutting. After the wood is cut, wood chips are easily accumulated between the blades to cause blockage, increase the current, and place high performance requirements on the motor and transmission mechanism. Utility Model Content

[0004] In order to improve the chip removal effect of the cutting mechanism of a branch shredder and reduce the risk of blockage, the present application provides a cutting mechanism of a branch shredder.

[0005] The cutting mechanism of a branch shredder provided in the present application adopts the following technical solution:

[0006] A cutting mechanism of a branch shredder includes a driving source, a tool and a tool shaft, wherein the output shaft of the driving source is directly or indirectly connected to the tool shaft, the tool includes a front tool disc, a rear tool disc and a cutter, the front tool disc and the rear tool disc are arranged on the tool shaft at intervals along the axial direction of the tool shaft, a plurality of cutters are arranged between the front tool disc and the rear tool disc, the cutters are distributed at intervals along the circumference of the tool shaft, and a distance is provided between the side of the cutter close to the tool shaft and the outer side wall of the tool shaft.

[0007] By adopting the above technical solution, the output shaft of the driving source rotates, driving the knife shaft to rotate. The knife shaft drives the cutter to rotate through the action of the front knife disc and the rear knife disc to cut branches or wood. Since the cutters are distributed at intervals and there is a distance between the cutter and the knife shaft, the tool is partially hollow and can play a chip removal role, reduce the risk of wood chip blockage, reduce the working current, and thus reduce the cutting load, thereby increasing the service life of the cutter and the entire machine.

[0008] Preferably, the driving source includes a motor and a gear box, the output shaft is arranged on the gear box, and the power shaft of the motor is connected to the output shaft of the gear box through a gear assembly.

[0009] By adopting the above technical solution, the motor drives the output shaft of the gear box to rotate. The gear box is designed so that the rotation speed of the knife shaft can be set within a more appropriate range and the stability of the knife shaft during rotation can be improved.

[0010] Preferably, a tool holder is fixed on the housing of the gear box, a baffle is movably provided on a side of the tool holder close to the tool, the baffle is spaced apart from the tool, and an adjustment device capable of adjusting the distance between the baffle and the tool is provided on the tool holder.

[0011] By adopting the above technical solution, the baffle plate cooperates with the blade to form a cutting action, and the adjustment device adjusts the distance between the baffle plate and the cutter to achieve different cutting effects and sawdust forms.

[0012] Preferably, the tool further comprises a sleeve, the sleeve is sleeved on the tool shaft and the two are circumferentially fixed, and the front tool disc and the rear tool disc are arranged on the sleeve.

[0013] By adopting the above technical solution, the output shaft drives the cutter shaft to rotate, and the cutter shaft drives the cutter to rotate through the shaft sleeve.

[0014] Preferably, a front end cover is provided at one end of the tool holder away from the gear box, the front end cover is spaced apart from the front tool disc, and the tool holder further has a limiting portion spaced apart from the rear tool disc.

[0015] By adopting the above technical solution, the front end cover and the limiting part are used to keep the cutter in a fixed range of motion to complete the cutting.

[0016] Preferably, the cutter, the front blade disc, the rear blade disc and the shaft sleeve are an integrally formed structure.

[0017] By adopting the above technical solution, the cutter, the front blade disc, the rear blade disc and the shaft sleeve are integrally formed to form the tool, which improves the strength of the tool, reduces the installation process and improves the convenience of installation.

[0018] Preferably, the cutter has a guide portion inclined toward the axial direction of the cutter shaft.

[0019] By adopting the above technical solution, after the cutter has the guide part, it can guide the branches or wood to the central cutting direction while improving the strength of the cutter.

[0020] Preferably, the length direction of the cutter is parallel to the axial direction of the cutter shaft.

[0021] Preferably, the length direction of the cutter is inclined relative to the axis of the cutter shaft, and the distance between the front end of the cutter and the axis of the cutter shaft is greater than the distance between the rear end of the cutter and the axis of the cutter shaft.

[0022] By adopting the above technical solution, the cutter forms a certain angle with the axis of the cutter shaft, which can convert direct cutting into inclined cutting. Cutting drives the wood to move at the same time, reducing the torque required for cutting, reducing the tool load and working current, and increasing the life of the tool and the entire machine.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The cutter can remove chips, reduce the risk of wood chip blockage, reduce the working current, and thus reduce the cutting load, thereby increasing the service life of the cutter and the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of embodiment 1 of the present application.

[0026] Figure 2 It is a cross-sectional view of the first embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the tool in Example 1 of the present application.

[0028] Figure 4 It is a schematic diagram of the structure of the tool in the second embodiment of the present application.

[0029] Explanation of the accompanying drawings: 1. driving source; 11. motor; 12. gear box; 13. power shaft; 14. gear assembly; 2. tool; 21. front blade; 22. rear blade; 23. cutter; 24. bushing; 25. guide part; 3. blade shaft; 4. output shaft; 5. tool holder; 51. limit part; 6. baffle; 7. adjustment device; 8. front end cover; 9. adjustment knob. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] Embodiment 1:

[0032] like Figure 1 , Figure 2 As shown, the cutting mechanism of the branch shredder includes a driving source 1 , a cutter 2 and a cutter shaft 3 , and an output shaft 4 of the driving source 1 cooperates with the cutter shaft 3 .

[0033] In this embodiment, the output shaft 4 of the driving source 1 is indirectly connected to the knife shaft 3. The driving source 1 includes a motor 11 and a gear box 12. The output shaft 4 is arranged on the gear box 12. The power shaft 13 of the motor 11 is connected to the output shaft 4 of the gear box 12.

[0034] Specifically, the power shaft 13 of the motor 11 is connected to the output shaft 4 through the gear assembly 14 in the gear box 12 to achieve torque transmission. The front end of the power shaft 13 is inserted into the positioning hole at the rear end of the output shaft 4. The specific method of the gear assembly 14 can adopt internal meshing or other methods, which will not be repeated.

[0035] As another solution, the driving source 1 can be designed as a separate motor 11, and the power shaft 13 of the motor 11 is directly connected to the output shaft 4, or the power shaft 13 and the output shaft 4 are designed as an integrated structure and directly connected to the tool 2.

[0036] like Figure 2 , Figure 3 As shown, the tool 2 includes a front blade disc 21, a rear blade disc 22 and a cutter 23. The front blade disc 21 and the rear blade disc 22 are arranged on the blade shaft 3 along the axial direction of the blade shaft 3. A plurality of cutters 23 are arranged between the front blade disc 21 and the rear blade disc 22. The cutters 23 are distributed along the circumferential direction of the blade shaft 3 at intervals, and there is a distance between the side of the cutter 23 close to the blade shaft 3 and the outer side wall of the blade shaft 3.

[0037] In this embodiment, the front blade disc 21, the rear blade disc 22 and the blade shaft 3 are indirectly connected. Specifically, the tool 2 also includes a sleeve 24, which is sleeved on the blade shaft 3 and the two are circumferentially fixed. Preferably, the sleeve 24 and the blade shaft 3 are matched by a keyway, and the front blade disc 21 and the rear blade disc 22 are arranged on the sleeve 24.

[0038] As another solution, the front blade disc 21 and the rear blade disc 22 can also be directly fixed on the blade shaft 3.

[0039] Preferably, the cutter 23, the front blade disc 21, the rear blade disc 22, and the shaft sleeve 24 are an integrally formed structure.

[0040] As another solution, the above four can also adopt a split structure and be connected by welding or fasteners.

[0041] Preferably, the cutter 23 has a guide portion 25 inclined toward the axial direction of the cutter shaft 3, and the guide portion 25 is distributed on both sides of the cutter 23, which can guide the branches or wood toward the central cutting direction while improving the strength of the cutter 2.

[0042] In this embodiment, the length direction of the cutter 23 is inclined relative to the axis of the cutter shaft 3, the distance between the front end of the cutter 23 and the axis of the cutter shaft 3 is greater than the distance between the rear end of the cutter 23 and the axis of the cutter shaft 3, the front end of the cutter 23 refers to the direction close to the front end cover 8 of the tool holder 5, and the rear end of the cutter 23 is opposite to the front end of the cutter 23.

[0043] Preferably, the cutter 23 itself is still in a straight line, but the diameter of the front blade disc 21 is larger than the diameter of the rear blade disc 22. The front end of the cutter 23 is connected to the edge of the front blade disc 21, and the rear end of the cutter 23 is connected to the edge of the rear blade disc 22, thereby forming a state of being inclined relative to the axis of the blade shaft 3, which can convert direct cutting into inclined cutting, and drive the wood to move while cutting, thereby reducing the torque required for cutting, reducing the load and working current of the tool 2, and increasing the life of the tool 2 and the entire machine.

[0044] As another scheme, the diameter of the front blade disc 21 is equal to the diameter of the rear blade disc 22, the connection point between the front end of the cutter 23 and the front blade disc 21 is defined as connection point A, the connection point between the rear end of the cutter 23 and the rear blade disc 22 is defined as connection point B, and the distance between connection point A and the axis of the blade shaft 3 is greater than the distance between connection point B and the axis of the blade shaft 3.

[0045] like Figure 1 , Figure 2 As shown, a tool holder 5 is fixed on the housing of the gear box 12 , a baffle 6 is movably provided on one side of the tool holder 5 close to the tool 2 , the baffle 6 is spaced apart from the tool 2 , and an adjustment device 7 capable of adjusting the distance between the baffle 6 and the tool 2 is provided on the tool holder 5 .

[0046] Preferably, a front end cover 8 is provided at one end of the tool holder 5 away from the gear box 12 , and the front end cover 8 is spaced apart from the front cutter disc 21 . The tool holder 5 also has a limiting portion 51 spaced apart from the rear cutter disc 22 .

[0047] In this embodiment, the adjusting device 7 includes an adjusting knob 9 threadedly arranged on the tool holder 5, the inner end of the adjusting knob 9 is rotatably connected to the baffle 6, the front end of the baffle 6 is slidably matched with the front end cover 8, and the rear end of the baffle 6 is slidably matched with the limit portion 51. Rotating the adjusting knob 9 can drive the baffle 6 to slide along the front end cover 8 and the limit portion 51.

[0048] The working principle of this embodiment is as follows: the motor 11 runs, driving the output shaft 4 to rotate through the power shaft 13 and the gear assembly 14, and the output shaft 4 drives the tool 2 to rotate through the tool shaft 3, so that the cutter 23 cooperates with the baffle 6 to achieve cutting. The tool 2 is partially hollow, which can play a chip removal role, reduce the risk of wood chip blockage, reduce the working current, and thus reduce the cutting load, thereby increasing the service life of the cutter 23 and the entire machine.

[0049] Embodiment 2:

[0050] like Figure 4 As shown, this embodiment is substantially the same as the first embodiment, except that, in this embodiment, the length direction of the cutter 23 is parallel to the axial direction of the cutter shaft 3, and the outer diameters of the front cutter disc 21 and the rear cutter disc 22 of the tool 2 are equal.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cutting mechanism of a branch chipper, characterized in that: The invention comprises a driving source (1), a tool (2) and a tool shaft (3); the output shaft (4) of the driving source (1) is directly or indirectly connected to the tool shaft (3); the tool (2) comprises a front tool disc (21), a rear tool disc (22) and a cutter (23); the front tool disc (21) and the rear tool disc (22) are arranged on the tool shaft (3) at intervals along the axial direction of the tool shaft (3); a plurality of cutters (23) are arranged between the front tool disc (21) and the rear tool disc (22); the cutters (23) are distributed at intervals along the circumference of the tool shaft (3); and a distance is provided between a side of the cutter (23) close to the tool shaft (3) and an outer side wall of the tool shaft (3).

2. The cutting mechanism of the branch chipper according to claim 1, characterized in that: The driving source (1) comprises a motor (11) and a gear box (12), the output shaft (4) is arranged on the gear box (12), and the power shaft (13) of the motor (11) is connected to the output shaft (4) of the gear box (12) via a gear assembly (14).

3. The cutting mechanism of the branch chipper according to claim 2, characterized in that: A tool holder (5) is fixed on the housing of the gear box (12); a baffle (6) is movably provided on a side of the tool holder (5) close to the tool (2); the baffle (6) and the tool (2) are spaced apart; and an adjustment device (7) capable of adjusting the distance between the baffle (6) and the tool (2) is provided on the tool holder (5).

4. The cutting mechanism of the branch chipper according to claim 3, characterized in that: A front end cover (8) is provided at one end of the tool holder (5) away from the gear box (12); the front end cover (8) is spaced apart from the front tool disc (21); and the tool holder (5) further comprises a limiting portion (51) spaced apart from the rear tool disc (22).

5. The cutting mechanism of the branch chipper according to claim 1, 2, 3 or 4, characterized in that: The tool (2) further comprises a shaft sleeve (24), wherein the shaft sleeve (24) is sleeved on the tool shaft (3) and the two are circumferentially fixed, and the front tool disc (21) and the rear tool disc (22) are arranged on the shaft sleeve (24).

6. The cutting mechanism of the branch chipper according to claim 5, characterized in that: The cutter (23), the front cutter disc (21), the rear cutter disc (22) and the shaft sleeve (24) are an integrally formed structure.

7. The cutting mechanism of the branch chipper according to claim 1, 2, 3 or 4, characterized in that: The cutter (23) has a guide portion (25) inclined toward the axial direction of the cutter shaft (3).

8. The cutting mechanism of the branch chipper according to claim 1, 2, 3 or 4, characterized in that: The length direction of the cutting knife (23) is parallel to the axial direction of the cutting axis (3).

9. The cutting mechanism of the branch chipper according to claim 1, 2, 3 or 4, characterized in that: The length direction of the cutter (23) is inclined relative to the axis of the cutter shaft (3), and the distance between the front end of the cutter (23) and the axis of the cutter shaft (3) is greater than the distance between the rear end of the cutter (23) and the axis of the cutter shaft (3).

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