Small branch chipper

Abstract

The utility model provides a kind of small branch crusher, the small branch crusher includes machine body and located machine body on feed hopper, discharge hopper, cutterhead shell, cutter, walking wheel, first driving device and second driving device, feed hopper, cutterhead shell and discharge hopper are sequentially communicated, cutter is rotatably connected in cutterhead shell, for cutting the material that enters discharge hopper;First driving device is driven connection with cutter, for driving cutter rotation;Second driving device can drive walking wheel rotation;Feed hopper and discharge hopper are located at the front and rear sides of machine body respectively, the outer wall of feed hopper is fixed with connecting frame, connecting frame is fixedly connected with the handle of holding for person.The operator can hand-held handle guide machine to march, improve the passability and walking stability of machine under complex terrain.Two driving devices avoid the mutual influence of single power source on walking and operating performance when load fluctuates, improve the overall reliability and maintenance convenience of system.

Description

Technical Field

[0001] This utility model relates to the field of wood chipping equipment technology, and in particular to a small wood chipper. Background Technology

[0002] A branch shredder (also known as a wood chipper) is a specialized piece of equipment used to process waste from landscaping and forestry pruning. It achieves resource recycling by shredding plant materials such as branches, leaves, and trunks. During the cutting process, a high-speed rotating cutter disc (equipped with blades) applies cutting, impact, and shearing forces to the material, resulting in highly efficient shredding.

[0003] Existing wood chippers typically consist of a frame, feed hopper, discharge hopper, and cutter head. Most wood chippers require traction power, necessitating a towing vehicle (tractor / pickup truck) connected via a standard trailer ball. These towing-required chippers necessitate large or long frames to prevent interference. For some self-propelled wood chippers, hydraulic pumps, hydraulic lines, and motors are typically used to drive the wheels, and these drive mechanisms occupy significant space, resulting in a large overall size. Therefore, existing wood chippers are bulky, difficult to maneuver with manual assistance, and exhibit unstable movement. Utility Model Content

[0004] The purpose of this utility model is to provide a small-sized wood chipper to solve the technical problems of large size and unstable movement of existing wood chippers. The various technical effects of the preferred technical solutions provided by this utility model are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The small wood chipper provided by this utility model includes a machine body and a feed hopper, a discharge hopper, a cutter head housing, a cutter head, traveling wheels, a first drive device, and a second drive device located on the machine body, wherein:

[0007] The feed hopper, the cutter head housing, and the discharge hopper are connected in sequence. The cutter head is rotatably connected inside the cutter head housing and is used to cut the material entering the discharge hopper. The first driving device is connected to the cutter head and is used to drive the cutter head to rotate. The second driving device can drive the traveling wheels to rotate.

[0008] The feed hopper and the discharge hopper are located on the front and rear sides of the machine body, respectively. A connecting frame is fixed on the outer wall of the feed hopper, and a handle for a person to hold is fixedly connected to the connecting frame.

[0009] Preferably, the connecting frame is arranged around the feed hopper, and a bent plate is integrally formed on the feed hopper. The bent plate is fixedly connected to the connecting frame, and the handle is in the shape of a bent handle and is fixed to the bent plate.

[0010] Preferably, there are two or more handles, which are fixed to both sides of the feed hopper.

[0011] Preferably, the peripheral wall of the feeding section of the discharge hopper is a closed structure, and the discharge section of the discharge hopper includes three side plates, which surround to form a discharge port, which is inclined downward.

[0012] Preferably, the discharge hopper further includes structural reinforcing ribs fixed inside the discharge hopper, with different surfaces of the structural reinforcing ribs being attached to and fixedly connected to the two adjacent side plates, and the structural reinforcing ribs being arranged at intervals along the length direction of the discharge hopper.

[0013] Preferably, the small wood chipper further includes a guide cover, which is located on top of the discharge hopper and closes the top of the discharge hopper. The angle between the guide cover and the discharge hopper is adjustable.

[0014] Preferably, the guide shroud includes a top wall and two side walls, wherein:

[0015] The sidewalls are fixed to opposite sides of the top wall, and the sidewalls are rotatably connected to the discharge hopper via a rotating shaft;

[0016] An arc-shaped adjustment hole is provided on the side wall, and a locking member can pass through different positions of the arc-shaped adjustment hole to lock the side wall to the discharge hopper.

[0017] Preferably, the first drive device includes an engine, and the output shaft of the engine is connected to the cutter head via a belt or chain;

[0018] The second driving device includes a drive motor, and the drive motor and the walking wheel are driven by a chain;

[0019] The small wood chipper also includes a battery, which is electrically connected to the drive motor via a boost DC-DC module to supply power to the drive motor; the output shaft of the engine is driven to a generator, which is electrically connected to a rectifier, and the rectifier is electrically connected to the battery.

[0020] Preferably, the small wood chipper further includes a drive shaft, and the number of the walking wheels is two. The two walking wheels are respectively fixed to both ends of the drive shaft. A sprocket is fixed on the drive shaft, and the second drive device is connected to the sprocket via a chain drive.

[0021] Preferably, the front side of the machine body is rotatably connected to an auxiliary wheel.

[0022] The small wood chipper provided by this utility model has the following advantages compared with the prior art: It has a compact structure and small size, and uses an independent second drive unit to drive its movement, replacing the traditional large and complex hydraulic drive system, significantly reducing the overall size and weight of the machine. It is highly maneuverable and easy to operate; the operator can guide the machine's movement with a handle, achieving precise directional control and position adjustment, greatly improving the machine's passability and stability in complex terrain. The two drive units avoid the mutual influence of a single power source on walking and working performance under load fluctuations, improving the overall reliability and ease of maintenance of the system. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a small wood chipper;

[0025] Figure 2 This is a magnified view of a portion of the material guide cover;

[0026] Figure 3 This is a structural schematic diagram of a small wood chipper from the rear view.

[0027] Figure 4 This is a structural diagram of a small wood chipper with part of the cutter head housing omitted.

[0028] In the diagram: 1. Machine body; 2. Feed hopper; 21. Connecting frame; 22. Bending plate; 23. Handle; 3. Discharge hopper; 31. Side plate; 32. Discharge port; 33. Structural reinforcing rib; 4. Cutter head shell; 5. Cutter head; 6. Traveling wheel; 61. Drive shaft; 62. Sprocket; 7. First drive device; 8. Second drive device; 9. Guide cover; 91. Top wall; 92. Side wall; 93. Rotating shaft; 94. Arc-shaped adjustment hole; 10. Auxiliary wheel. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] This utility model provides a small wood chipper that significantly reduces the overall size and weight of the machine, and improves the overall reliability and ease of maintenance of the system.

[0033] The following is combined with Figures 1-4 The technical solution provided by this utility model will be described in more detail.

[0034] The small wood chipper provided by this utility model includes a body 1 and a feed hopper 2, a discharge hopper 3, a cutter head shell 4, a cutter head 5, a traveling wheel 6, a first drive device 7, and a second drive device 8 located on the body 1. The feed hopper 2, the cutter head shell 4, and the discharge hopper 3 are connected in sequence. The cutter head 5 is rotatably connected inside the cutter head shell 4 and is used to chop the material entering the discharge hopper 3. The first drive device 7 is driven by the cutter head 5 and is used to drive the cutter head 5 to rotate. The second drive device 8 can drive the traveling wheel 6 to rotate. The feed hopper 2 and the discharge hopper 3 are located on the front and rear sides of the body 1, respectively. A connecting frame 21 is fixed on the outer wall of the feed hopper 2, and a handle 23 for a person to hold is fixedly connected to the connecting frame 21.

[0035] See Figures 1-4 As shown, the body 1 can be constructed of high-strength steel by welding or bolting to provide sufficient structural strength and rigidity to withstand the vibration and impact generated during operation.

[0036] See Figure 1 and Figure 4 The feed hopper 2 is located at the front of the machine body 1 and has a wide opening to facilitate the operator in feeding garden waste such as branches and shrubs. The internal channel of the feed hopper 2 narrows in a funnel shape, and its outlet is connected to the inlet of the cutter head housing 4. The cutter head housing 4 is a sturdy metal shell, and the cutter head 5 is rotatably mounted in its internal cavity. The outlet of the cutter head 5 is connected to the inlet of the discharge hopper 3.

[0037] See Figure 1 and Figure 4 The discharge hopper 3 is an upward and backward extending pipe structure, capable of throwing the shredded material in a certain parabolic trajectory for easy collection. Therefore, see... Figure 4 As shown, after the material is fed into the feed hopper 2, it will follow the channel formed by the feed hopper 2, the cutter head shell 4 and the discharge hopper 3 to complete the complete process of feeding, chopping and discharging in sequence.

[0038] As an optional implementation, see Figure 3 As shown, the connecting frame 21 is arranged around the feed hopper 2, and the bent plate 22 is integrally formed on the feed hopper 2. The bent plate 22 is fixedly connected to the connecting frame 21, and the handle 23 is in the shape of a bent handle and is fixed on the bent plate 22.

[0039] See Figure 3 Two symmetrical handles 23 are fixed to the bent plate component 22, which is formed by bending the feed hopper 2. The bent plate component 22 is welded and fixed to the connecting frame 21, and is firmly fixed on the left and right sides of the feed hopper 2. The height and spacing of the handles 23 are ergonomically optimized so that an adult operator of standard height can stand naturally behind the machine and hold it comfortably with both hands.

[0040] The small wood chipper of this embodiment does not require additional frame or handrail. It uses the structure of the feed hopper 2 to fix the handle 23, which is flexible and easy to operate. The operator can hold the handle 23 to guide the machine, achieving precise directional control and position adjustment, which greatly improves the machine's passability and walking stability in complex terrain.

[0041] As an optional implementation, see Figure 1 As shown, the peripheral wall of the feeding section of the discharge hopper 3 is a closed structure, and the discharge section of the discharge hopper 3 includes three side plates 31. The side plates 31 surround to form a discharge port 32, which is inclined downward.

[0042] The discharge hopper 3 structure in this embodiment is integrally bent from a plate. The discharge port 32 is formed by three side plates 31 surrounding the discharge section. The structure is simple and compact, without the need for extra connecting structures. The structure of the discharge hopper 3 can throw the shredded material out in a certain parabolic trajectory, which is convenient for collection.

[0043] For small-sized wood chippers, in order to further reduce the size while ensuring the structural strength of the discharge hopper 3, as an optional implementation method, see [link to relevant documentation]. Figure 2 As shown, the discharge hopper 3 also includes structural reinforcing ribs 33 fixed inside the discharge hopper 3. Different surfaces of the structural reinforcing ribs 33 are attached to and fixedly connected to the adjacent side plates 31. The structural reinforcing ribs 33 are arranged at intervals along the length direction of the discharge hopper 3.

[0044] See Figure 2 As shown, the structural reinforcing ribs enhance the structural strength of the discharge hopper 3, preventing it from deforming under the impact of crushed materials and improving the stability of the structure.

[0045] As an optional implementation, see Figure 1 and Figure 2 As shown, the small shredder also includes a guide cover 9, which is located on top of the discharge hopper 3 and closes the top of the discharge hopper 3. The angle between the guide cover 9 and the discharge hopper 3 is adjustable.

[0046] Because the structure of the discharge hopper 3 allows the shredded material to be thrown out in a certain parabolic trajectory, it is easy to collect. In this embodiment, the guide cover 9 and the angle between the guide cover 9 and the discharge hopper 3 are adjustable. The angle can be adjusted according to the usage environment to adjust the throwing height of the shredded material, making it easier to collect the fragments and preventing the fragments from being thrown out uncontrollably and difficult to collect.

[0047] As an optional implementation, see Figure 2 As shown, the guide cover 9 includes a top wall 91 and two side walls 92, wherein: the side walls 92 are fixed to the opposite sides of the top wall 91, and the side walls 92 are rotatably connected to the discharge hopper 3 through a rotating shaft 93; the side walls 92 are provided with arc-shaped adjustment holes 94, and a locking member can pass through different positions of the arc-shaped adjustment holes 94 to lock the side walls 92 to the discharge hopper 3.

[0048] The aforementioned locking component can be a bolt, etc. When the locking component is loosened, the guide cover 9 is manually rotated. The guide cover 9 rotates around the rotating shaft 93, and the locking component moves relative to the arc-shaped adjustment hole 94. After adjusting the angle of the guide cover 9, the locking component is tightened to fix the guide cover 9. The top wall 91 can limit the upward throwing height of the shredded material, and the side wall 92 can prevent the shredded material from scattering. In this embodiment, the guide cover 9 can adjust the throwing height of the shredded material, making it easy to collect the shredded material.

[0049] The guide shroud 9 is used to guide the final ejection direction of the fragments. See also Figure 2 As shown, when the discharge direction needs to be adjusted, the operator only needs to loosen the locking element (e.g., a wing nut) by hand. At this time, the guide cover 9 can rotate freely around the pivot 93, thereby changing its tilt angle relative to the horizontal plane. The operator can throw the scrap further (increase the angle) or closer (decrease the angle) as needed, or aim it at a specific collection container (such as a collection bag or trolley). Once the desired angle is achieved, tightening the locking element will securely lock the guide cover 9 in its current position using friction. This structure greatly enhances the flexibility of scrap handling, making scrap collection and management more convenient and efficient.

[0050] As an optional implementation, see Figure 4 As shown, the first drive device 7 in this embodiment includes an engine, and the output shaft of the engine is connected to the cutter head 5 via a belt or chain drive. The first drive device is preferably a small gasoline engine, such as a four-stroke, single-cylinder, air-cooled gasoline engine with a displacement of 200cc to 400cc, which can provide strong and stable power output to meet the need for efficient chopping of hard branches. The output shaft of the engine is driven and connected to the main shaft of the cutter head 5 via a transmission mechanism (e.g., a V-belt and pulley assembly). After the engine starts, its power is dedicated to driving the cutter head 5 to rotate at high speed to perform the chopping task.

[0051] See Figure 3 The second drive unit 8 includes a drive motor, which is connected to the walking wheel 6 via a chain drive; the small shredder also includes a battery, which is electrically connected to the drive motor via a boost DC-DC module to supply power to the drive motor.

[0052] The second drive unit can be, for example, a permanent magnet brushed or brushless DC motor with a rated voltage of 24 volts or 48 volts. DC drive motors have advantages such as high starting torque, easy speed adjustment, and simple structure. The output shaft of this drive motor is connected to the traveling wheel 6 via a chain drive mechanism. See also... Figure 3 As shown, the small wood chipper also includes a drive shaft 61 and two walking wheels 6, which are fixed at both ends of the drive shaft 61. A sprocket 62 is fixed on the drive shaft 61. The second drive device 8 is connected to the sprocket 62 by a chain drive, thereby enabling the machine to move forward or backward autonomously.

[0053] The function of the boost DC-DC module is to boost the 12V low-voltage DC power from the battery to a stable 24V DC power.

[0054] In this embodiment, the battery is detachably mounted on the body 1 using screws or other locking devices, making it convenient to replace the battery with a new one.

[0055] In this embodiment, the battery can operate independently, or the engine's output shaft can be connected to a generator, which is electrically connected to a rectifier, and the rectifier is electrically connected to the battery. The generator can be a small AC generator or a DC generator. In this embodiment, an AC generator is used as an example. The AC power generated cannot directly power the DC drive motor or charge the battery. Therefore, a rectifier is provided in the circuit. The generator's output terminal is connected to the rectifier's input terminal via a cable. The rectifier contains electronic components such as a rectifier bridge. The rectifier (three-phase rectifier bridge) is a mature existing technology, and its function is to convert the alternating current (AC) output by the generator into direct current (DC).

[0056] The crankshaft of the engine is connected to the input shaft of the generator via a belt drive. The electrical connection between the generator, rectifier, battery and drive motor is a mature existing technology and will not be elaborated here.

[0057] As an optional implementation, see Figure 1 As shown, an auxiliary wheel 10 is rotatably connected to the front side of the machine body 1.

[0058] The two rear walking wheels 6 and the front auxiliary wheels 10 together form a stable triangular three-point support structure. The three-point support structure can better adapt to uneven ground, ensuring that all wheels can contact the ground, avoiding the body 1 from warping or shaking due to uneven ground, thereby greatly enhancing the overall driving stability and terrain adaptability of the machine.

[0059] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A small wood chipper, characterized in that, It includes a machine body and a feed hopper, a discharge hopper, a cutter head housing, a cutter head, wheels, a first drive unit, and a second drive unit located on the machine body, wherein: The feed hopper, the cutter head housing, and the discharge hopper are connected in sequence. The cutter head is rotatably connected inside the cutter head housing and is used to cut the material entering the discharge hopper. The first driving device is connected to the cutter head and is used to drive the cutter head to rotate; the second driving device can drive the traveling wheels to rotate. The feed hopper and the discharge hopper are located on the front and rear sides of the machine body, respectively. A connecting frame is fixed on the outer wall of the feed hopper, and a handle for a person to hold is fixedly connected to the connecting frame.

2. The small wood chipper according to claim 1, characterized in that, The connecting frame is arranged around the feed hopper, and a bent plate is integrally formed on the feed hopper. The bent plate is fixedly connected to the connecting frame, and the handle is in the shape of a bent handle and is fixed to the bent plate.

3. The small wood chipper according to claim 1, characterized in that, The number of handles is two or more, and they are fixed on both sides of the feed hopper respectively.

4. The small wood chipper according to claim 1, characterized in that, The feed section of the discharge hopper has a closed structure on its periphery, and the discharge section of the discharge hopper includes three side plates, which surround and form a discharge port, which is inclined downward.

5. The small wood chipper according to claim 4, characterized in that, The discharge hopper also includes structural reinforcing ribs fixed inside the discharge hopper. Different surfaces of the structural reinforcing ribs are attached to and fixedly connected to the two adjacent side plates. The structural reinforcing ribs are arranged at intervals along the length of the discharge hopper.

6. The small wood chipper according to claim 1 or 4, characterized in that, The small wood chipper also includes a guide cover, which is located on top of the discharge hopper and closes the top of the discharge hopper. The angle between the guide cover and the discharge hopper is adjustable.

7. The small wood chipper according to claim 6, characterized in that, The material guide hood includes a top wall and two side walls, wherein: The sidewalls are fixed to opposite sides of the top wall, and the sidewalls are rotatably connected to the discharge hopper via a rotating shaft; An arc-shaped adjustment hole is provided on the side wall, and a locking member can pass through different positions of the arc-shaped adjustment hole to lock the side wall to the discharge hopper.

8. The small wood chipper according to claim 1, characterized in that, The first drive device includes an engine, and the output shaft of the engine is connected to the cutter head via a belt or chain. The second driving device includes a drive motor, and the drive motor and the walking wheel are driven by a chain; The small wood chipper also includes a battery, which is electrically connected to the drive motor via a boost DC-DC module to supply power to the drive motor; the output shaft of the engine is driven to a generator, which is electrically connected to a rectifier, and the rectifier is electrically connected to the battery.

9. The small wood chipper according to claim 1, characterized in that, The small wood chipper also includes a drive shaft, and there are two walking wheels, which are respectively fixed to both ends of the drive shaft. A sprocket is fixed on the drive shaft, and the second drive device is connected to the sprocket via a chain drive.

10. The small wood chipper according to claim 1, characterized in that, The front of the machine body is rotatably connected to an auxiliary wheel.

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