A branch crusher with automatic material cleaning and anti-blocking function

Abstract

This invention discloses a wood chipper with automatic material clearing and anti-clogging function, comprising a housing, a rotary cutting mechanism, and a feeding chute. The top of the housing has a discharge chute, and the feeding chute contains a dynamic pressing assembly. The dynamic pressing assembly includes a slide base slidably disposed inside the feeding chute, and a pressing arm with a plate-like structure. The upper end of the pressing arm is hinged to the slide base, and the lower end extends downwards at an angle to the lower surface of the feeding chute. The slide base has a reciprocating swing mechanism drivenly connected to the upper end of the pressing arm, and the top of the feeding chute has a reciprocating translation mechanism drivenly connected to the slide base. This invention uses a guide curtain, a pressing arm, and an arc-shaped guide plate to continuously constrain the branches along the feeding direction, and the pressing arm pushes the branches, effectively preventing branch warping that could cause the rotary cutter cylinder to jam, ensuring continuous cutting by the rotary cutter cylinder, and achieving automatic material clearing and reliable anti-clogging.

Description

Technical Field

[0001] This invention relates to the field of wood chippers, and more specifically to a wood chipper with an automatic material clearing and anti-clogging function. Background Technology

[0002] A wood chipper is a type of mechanical equipment used in landscaping, forestry clearing, and biomass processing. It is mainly used to chop pruned branches, shrubs, and other woody materials into small particles that are easy to transport or compost.

[0003] Existing shredders typically use an inclined slide combined with a bottom rotating cutter structure, where branches slide down to the cutting zone under gravity for shredding. However, in actual operation, irregular branch shapes, upturned ends, or uncontrolled feeding posture often cause the front end of the branch to collide with or get stuck on the upper part of the rotating cutter structure, resulting in instantaneous stalling or even equipment shutdown.

[0004] Currently, wood chippers lack effective feeding guidance and mainly rely on manual intervention to clear blockages. This is not only inefficient but also poses safety hazards, making it difficult to meet the demands of continuous, efficient, and unattended operation. Therefore, there is a need for a wood chipper with automatic material clearing and anti-blocking functions to solve the problems of blade jamming and rotation blockage caused by the uncontrollable feeding posture of branches in existing technologies, thereby improving the operational reliability of wood chippers. Summary of the Invention

[0005] To address the problems existing in the prior art, a shredder with automatic material clearing and anti-clogging function is provided. The shredder uses a guide curtain, a pressing arm, and an arc-shaped guide plate to continuously constrain the branches along the feeding direction. The pressing arm pushes the branches, effectively preventing the branches from warping and causing the rotating cutter cylinder to jam. This ensures continuous cutting by the rotating cutter cylinder and achieves automatic material clearing and reliable anti-clogging.

[0006] To address the problems of existing technologies, this invention provides a wood chipper with automatic material clearing and anti-clogging function, comprising a housing, a rotary cutting mechanism disposed within the housing, and a feed chute inclined above the rotary cutting mechanism. The top of the housing has a discharge chute communicating with its interior. A dynamic pressing assembly is disposed within the feed chute. The dynamic pressing assembly includes a slide base slidably disposed within the feed chute. A slide rail is provided at the top of the feed chute for the slide base to slide on. The slide rail extends along the feeding direction of the feed chute. A pressing arm, with a plate-like structure, is inclined along the feed chute. The upper end of the arm is hinged to the slide block, and the lower end extends downward at an angle to the lower surface of the feeding slide. The slide block is provided with a hinge part for the upper end of the pressing arm to be hinged. The slide block is provided with a reciprocating swing mechanism that is driven to the upper end of the pressing arm, which is used to drive the pressing arm to reciprocate around its upper end. The top of the feeding slide is provided with a reciprocating translation mechanism that is driven to the slide block, which is used to drive the pressing arm to reciprocate along the slide rail. The reciprocating swing mechanism and the reciprocating translation mechanism together constitute a composite drive unit, which is used to drive the pressing arm in a composite reciprocating motion state within the feeding slide that has both pressing and pushing functions.

[0007] Preferably, an arc-shaped guide plate fixedly connected to the housing is provided above the rotary cutting mechanism to limit the upward warping of the branches after being processed by the pressing arm.

[0008] Preferably, the lower end of the pressing arm is provided with a flexible plow head, which is made of rubber material, and the bottom surface of the flexible plow head is provided with a combing groove that runs through the feeding direction.

[0009] Preferably, the lower half of the pressing arm, located above the flexible plow head, is provided with a pressing section. The pressing section has a continuous slightly arched elastic structure along the direction of the feeding slide, which is used to provide a buffering effect during the pressing process.

[0010] Preferably, the upper part of the pressing arm is a planar segment, and the planar segment, the pressing segment, and the flexible plow head are connected sequentially along the feeding direction to form a continuous pressing guide surface.

[0011] Preferably, rubber strips are provided on both sides of the pressing arm. The rubber strips extend along the length of the pressing arm and slide against the side wall of the feeding chute to prevent tree branches from getting stuck between the pressing arm and the side wall of the feeding chute.

[0012] Preferably, the reciprocating swing mechanism includes a pressing cylinder, which is vertically mounted on the slide. The upper end of the pressing arm is provided with a rotating part that is rotatably connected to the hinge. The rotating part extends upward to a pressure plate. The output end of the pressing cylinder is provided with an abutment head that presses against the upper surface of the pressure plate.

[0013] Preferably, the reciprocating swing mechanism further includes two compression springs, which are symmetrically arranged along the width direction of the pressing arm. An upper spring seat is slidably provided on the slide rail, and a connecting rod is fixedly connected between the upper spring seat and the slide rail. A lower spring seat is provided on the upper surface of the pressing arm, and one end of the compression spring is fixedly connected to the upper spring seat and the other end is fixedly connected to the lower spring seat.

[0014] Preferably, the reciprocating translation mechanism includes an electric push rod, which is installed on the top of the feed slide along the slide rail direction. The output end of the electric push rod is fixedly connected to the slide block. The slide rail is provided with limiting structures at the front and rear of the slide block, and a travel range for the slide block to reciprocate is formed between the two limiting structures.

[0015] Preferably, the limiting structure includes a fixing block and a limiting rod. The fixing block is fixedly connected to the slide rail. The fixing block has a through hole along the slide rail for the limiting rod to pass through. A buffer spring is provided between the limiting rod and the fixing block. One end of the buffer spring is fixedly connected to the limiting rod, and the other end is fixedly connected to the fixing block.

[0016] The advantages of this application compared to the prior art are: 1. This invention forms a continuous guiding and constraining system from front to back by sequentially setting a guide curtain, a dynamic pressing component, and an arc-shaped guide plate in the feeding chute. After the branches are fed in, the guide curtain first restricts their lateral deviation and upward tilting. Then, the dynamic pressing component simultaneously presses and pushes them forward during the downward movement, ensuring they fit snugly against the bottom of the feeding chute into the cutting zone. During the return stroke, the pressing arm lifts to release space, facilitating the sliding of subsequent branches. When the branches approach the rotating cutter cylinder, the arc-shaped guide plate above continuously applies a downward limiting force with its concave curved surface, further suppressing the warping or jamming of the branches caused by elastic rebound. This keeps the branches in a controlled state, smoothly entering the shearing gap between the moving blade and the fixed blade holder, avoiding material accumulation and blockage, ensuring continuous and efficient cutting, and improving the automatic material clearing and anti-blocking capability of the shredder.

[0017] 2. This invention integrates a flat section, a slightly arched pressing section, and a flexible rake head on the pressing arm to form a continuous pressing guide surface from top to bottom, achieving phased guidance, buffering, pressing, and combing of branches. The flat section initially constrains the branch posture, the slightly arched pressing section elastically absorbs impact and stabilizes the branches, and the flexible rake head combs the branches and pushes them towards the shredding area. During the pressing and pushing process, the rubber strips on both sides of the pressing arm always adhere to the sidewall of the feed chute, preventing twigs from laterally entering and getting stuck, keeping the branches under control. This effectively avoids blockages caused by warping, entanglement, stacking, or side gap jamming, improving the feeding smoothness and thoroughness of the shredder when processing branches.

[0018] 3. This invention utilizes the coordinated action of a downward-pressing cylinder and a compression spring to achieve a sequential action where the pressing arm first lifts to release material, then presses down and pushes it forward by gravity and elasticity, ensuring that the branches slide smoothly and are reliably pressed down. Simultaneously, an electric push rod drives the slide block to reciprocate along the slide rail, causing the pressing arm to complete a cycle of forward pushing and backward resetting. The slide block's stroke is precisely limited by front and rear limiting structures, effectively restricting the sliding block's pushing range and ensuring coordinated and stable swinging and translational movements of the pressing arm. This avoids material jamming and guarantees pushing accuracy. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a wood chipper with automatic material clearing and anti-clogging function from a first perspective.

[0020] Figure 2 This is a three-dimensional structural diagram of a wood chipper with automatic material clearing and anti-clogging function from a second perspective.

[0021] Figure 3 This is a three-dimensional structural diagram of the feed chute of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the feed chute and dynamic pressing component of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0023] Figure 5 This is a plan view of the feed chute and dynamic pressing assembly of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the dynamic pressing component of a wood chipper with automatic material clearing and anti-clogging function from a first perspective.

[0025] Figure 7 This is a three-dimensional structural diagram of the dynamic pressing component of a wood chipper with automatic material clearing and anti-clogging function from a second perspective.

[0026] Figure 8 This is a three-dimensional structural cross-sectional view of the dynamic pressing component of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0027] Figure 9 This is a planar sectional view of the dynamic pressing component of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0028] Figure 10 This is a three-dimensional cross-sectional view of the limiting structure of a wood chipper with automatic material clearing and anti-clogging function according to the present invention.

[0029] Figure 11 yes Figure 10 Enlarged diagram of point A in the middle.

[0030] The following are the labels in the diagram: 1. Shell; 11. Arc-shaped guide plate; 2. Rotary cutting mechanism; 21. Rotary cutter cylinder; 22. Moving blade; 23. Fixed cutter seat; 3. Feed chute; 31. Guide curtain; 4. Discharge chute; 5. Dynamic pressing assembly; 51. Slide seat; 511. Slide rail; 512. Hinge; 513. Connecting rod; 52. Pressing arm; 521. Flexible plow head; 522. Pressing section; 523. Planar section; 53. Rubber strip; 6. Lower pressing cylinder; 61. Rotating part; 62. Pressing plate; 63. Contact head; 64. Compression spring; 641. Upper spring seat; 642. Lower spring seat; 7. Electric push rod; 71. Limiting structure; 711. Fixing block; 712. Limiting rod; 713. Buffer spring. Detailed Implementation

[0031] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 7 As shown, a wood chipper with automatic material clearing and anti-clogging function includes a housing 1, a rotary cutting mechanism 2 disposed within the housing 1, and a feed chute 3 inclined above the rotary cutting mechanism 2. The top of the housing 1 has a discharge chute 4 communicating with its interior. A dynamic pressing assembly 5 is provided within the feed chute 3. The dynamic pressing assembly 5 includes a slide base 51 slidably disposed within the feed chute 3. The top of the feed chute 3 has a slide rail 511 for the slide base 51 to slide on, and the slide rail 511 extends along the feeding direction of the feed chute 3. A pressing arm 52 has a plate-like structure and is inclined along the feed chute 3. The upper end of the pressing arm 52 is hinged to the slide base 51, and the lower end extends inclined downwards to the lower surface of the feed chute 3. The slide base 51 has a hinge portion 512 for the upper end of the pressing arm 52 to be hinged. The slide block 51 is equipped with a reciprocating swing mechanism that is throttle-connected to the upper end of the pressing arm 52, for driving the pressing arm 52 to reciprocate around its upper end. The top of the feeding slide 3 is equipped with a reciprocating translation mechanism that is throttle-connected to the slide block 51, for driving the pressing arm 52 to reciprocate along the slide rail 511. The reciprocating swing mechanism and the reciprocating translation mechanism together constitute a composite drive unit, for driving the pressing arm 52 in a composite reciprocating motion state within the feeding slide 3, which has both pressing, guiding and pushing functions.

[0033] Inside the feeding chute 3 and in front of the dynamic pressing component 5, there is a guide curtain 31. The upper end of the guide curtain 31 is fixedly connected to the top of the feeding chute 3, and the lower end hangs down naturally.

[0034] The rotary cutting mechanism 2 includes a rotary cutter cylinder 21, a movable blade 22 fixed on the rotary cutter cylinder 21, and a fixed blade holder 23 disposed on the inner wall of the housing 1 and cooperating with the movable blade 22. At least one movable blade 22 is provided on the rotary cutter cylinder 21 along its circumferential direction.

[0035] During operation, the branches to be processed are fed from the top of the feeding chute 3 and slide down naturally along the feeding chute 3. Before entering the cutting area, they first pass through the guide curtain 31 located in front of the dynamic pressing component 5, which plays a preliminary role in restraining and guiding the falling branches, preventing them from tilting upwards or shifting laterally, and ensuring that the branches enter the subsequent pressing area in a relatively smooth posture.

[0036] Subsequently, the branch enters the effective range of the dynamic pressing component 5. During the downward pressing stroke, the pressing arm 52 swings forward and downward and moves horizontally, actively pressing the branch against the bottom of the feed chute 3 and pushing it to the inlet of the rotary cutting mechanism 2. During the upward return stroke, the pressing arm 52 lifts up and resets backward, releasing the constraint on the branch and facilitating the smooth sliding of subsequent branches, thereby achieving a continuous and jam-free feeding process and preventing branches from getting stuck above the rotary cutter cylinder 21, which would obstruct the rotation of the rotary cutter cylinder 21.

[0037] When the branches are pushed to the rotary cutting mechanism 2, the rotary cutter cylinder 21, the moving blade 22, and the fixed blade holder 23 work together to complete the shredding operation. The rotary cutter cylinder 21 can rotate at high speed around a horizontal axis. The branches, pushed into the shearing zone by the pressure arm 52, are rapidly shredded into fine fragments by the combined action of the high-speed rotating moving blade 22 and the stationary fixed blade holder 23 through shearing and tearing. The shredded material, driven by centrifugal force and airflow, is discharged from the housing 1 through the discharge chute 4 at the top of the housing 1, completing the entire branch shredding process.

[0038] By combining the dynamic pressing component 5 with the front guidance of the guide curtain 31, the problem of the rotating cutter cylinder 21 being blocked due to warping, stacking or jamming of branches is effectively avoided, the continuity of the operation of the rotating cutter cylinder 21 is improved, and the automatic material clearing and anti-blocking effect is achieved.

[0039] See Figure 4 and Figure 5 As shown, an arc-shaped guide plate 11 fixedly connected to the housing 1 is also provided above the rotary cutting mechanism 2 to limit the branches after being processed by the pressing arm 52 from warping upwards.

[0040] During the branch shredding process, when branches are pushed to the inlet of the rotary cutting mechanism 2 by the pressing arm 52 of the dynamic pressing component 5, they are prone to bending or bouncing upwards before entering the cutting area due to their own elasticity or uneven force. This not only affects the smoothness of feeding but may also cause them to get stuck between the feeding slide 3 and the rotary cutting mechanism 2, resulting in blockage or even machine shutdown. To solve this problem, the curved profile of the arc-shaped guide plate 11 is adapted to the lower end of the feeding slide 3 and the upper profile of the rotary cutter cylinder 21, forming a downwardly converging limiting channel.

[0041] When the pressure arm 52 completes its pushing action and presses the branch into the cutting area, the arc-shaped guide plate 11, with its concave arc surface close to the top of the branch, applies a downward constraint force to the branch, effectively suppressing its upward warping tendency caused by rebound or bending stress. This ensures that the branch smoothly enters the shearing gap between the moving blade 22 and the fixed blade holder 23 while being flattened, thereby ensuring a continuous, stable, and efficient cutting process and improving the anti-clogging performance of the entire machine.

[0042] See Figures 6 to 9 As shown, the lower end of the pressing arm 52 is provided with a flexible plow head 521, which is made of rubber material. The bottom surface of the flexible plow head 521 is provided with a combing groove that runs through the feeding direction.

[0043] During the operation of the shredder, as the pressing arm 52 performs downward pressing and forward pushing actions with the composite drive unit, the flexible rake head 521 at its lower end first contacts and acts on the branches at the bottom of the feed chute 3. This flexible rake head 521 is made of rubber, possessing good elasticity and wear resistance, and can apply moderate pressure while avoiding rigid impact damage to the branches or the feed chute 3. The combing groove at the bottom of the flexible rake head 521 inserts into the pile of branches or gaps between branches during the pushing process, combing, separating, and guiding the intertwined, stacked, or laterally misaligned twigs and vines, separating the disordered material into a more orderly single layer or small bundle.

[0044] Meanwhile, the flexible rake head 521 slides along the bottom surface of the feed chute 3, pushing forward and sweeping away small branches remaining in low-lying areas or stuck at the edges of the feed chute 3, preventing branch accumulation. Through the synergistic effect of combing and flexible pushing, the problem of feed interruption caused by branch entanglement, blockage, or incomplete pushing in traditional branch shredders is effectively solved, improving the cleaning ability and operational stability of the branch shredder when handling complex branches.

[0045] The combing groove is set through the feed direction. Combined with the elastic deformation capability of the flexible plow head 521 and the dynamic pushing action of the pressing arm 52, the branches are only briefly combed by the combing groove without being stuck. The twigs can slide out quickly with the pushing force and enter the cutting zone, thus effectively avoiding jamming.

[0046] See Figures 5 to 9 As shown, the lower half of the pressing arm 52 and above the flexible plow head 521 is provided with a pressing section 522. The pressing section 522 has a continuous micro-arched elastic structure along the direction of the feeding slide 3, which is used to provide a buffering effect during the pressing process.

[0047] As the pressing arm 52 descends to perform the pressing action, its lower pressing section 522 first contacts the branches in the feed chute 3. Because this pressing section 522 is continuously slightly arched along the feeding direction, it undergoes elastic deformation during the pressing process, thereby absorbing the instantaneous impact force generated by the rigid or irregular shape of the branches. As the pressing arm 52 continues to press down and push forward, the slightly arched structure maintains stable pressing on the branches while continuously providing a gentle and uniform pressing force through its own rebound characteristics, avoiding the branches from rebounding, lifting, or getting stuck due to hard pressure.

[0048] When the pressing stroke ends and the pressing arm 52 returns to its original position, the micro-arch structure restores its original shape, releasing the branches and reserving space for the next batch of branches to slide down. Throughout the process, the micro-arch pressing section 522 achieves adaptive buffering pressing of branches of different thicknesses and hardness through elastic deformation and recovery, ensuring both pushing efficiency and effectively preventing blockage problems caused by impact or overpressure.

[0049] See Figures 6 to 9 As shown, the upper part of the pressing arm 52 is a planar section 523. The planar section 523, the pressing section 522, and the flexible plow head 521 are connected sequentially along the feeding direction to form a continuous pressing guide surface.

[0050] As the branch slides down the feed chute 3, it is initially constrained and guided by the planar section 523 of the upper part of the pressing arm 52 to keep it smooth and without tilting. As the branch slides down, it gradually transitions to the slightly arched pressing section 522 in the middle. This area applies a buffered and stable pressing force to the branch through elastic deformation to prevent it from tilting due to rebound or stacking.

[0051] Subsequently, the branches slide down to the lower flexible plow head 521 area. The plow head inserts into the gaps between the branches, sorting and gathering the tangled branches, and pushing the remaining branches completely into the cutting zone. Throughout the process, the continuous pressing guide surface formed from top to bottom ensures that the branches are consistently guided and pressed at different stages, thereby achieving a stable and clog-free feeding process.

[0052] See Figures 5 to 7 As shown, rubber strips 53 are provided on both sides of the pressing arm 52. The rubber strips 53 extend along the length of the pressing arm 52 and slide against the side wall of the feeding slide 3 to prevent tree branches from getting stuck between the pressing arm 52 and the side wall of the feeding slide 3.

[0053] As the pressing arm 52 reciprocates along the feeding slide 3 with the slide block 51, its two sides remain in close contact with the side walls of the feeding slide 3. When the branches are pushed downwards, if any twigs, vines, or irregular branches attempt to squeeze out or get stuck in the gap between the pressing arm 52 and the side walls of the feeding slide 3, they will be immediately blocked by the flexible rubber strips 53 on both sides and will not be able to enter the gap.

[0054] As the pressing arm 52 continues to press down and move forward, the branches are confined within the working area in front of the pressing arm 52 and are pushed as a whole towards the rotary cutting mechanism 2, thereby effectively preventing the lateral escape or blockage caused by the branches getting stuck in the side gaps during the entire pressing and pushing process.

[0055] See Figures 6 to 9 and Figure 11 As shown, the reciprocating swing mechanism includes a pressing cylinder 6, which is vertically mounted on the slide 51. The upper end of the pressing arm 52 is provided with a rotating part 61 that is rotatably connected to the hinge part 512. A pressure plate 62 extends upward from the rotating part 61. The output end of the pressing cylinder 6 is provided with an abutment head 63, which presses against the upper surface of the pressure plate 62.

[0056] During the pressing process, the pressing cylinder 6 is activated and extends downwards, and the contact head 63 at its output end moves downwards accordingly, directly acting on the upper surface of the pressing plate 62. Since the pressing plate 62 extends upwards from the rotating part 61 at the upper end of the pressing arm 52, and the rotating part 61 is rotatably connected to the slide block 51 through the hinge part 512, the pressing plate 62, under force, drives the entire pressing arm 52 to swing upwards around the hinge point, causing the lower end of the pressing arm 52 to lift upwards, so as to provide space for the branches to slide down.

[0057] When the pressing cylinder 6 retracts, the contact head 63 rises and disengages from the pressure plate 62. The pressing arm 52 swings downward under its own gravity, pressing the branches tightly, completing one swing cycle. This achieves the pressing and releasing of branches, providing a reliable drive for the swing component in the compound reciprocating motion. It realizes the sequential action of first discharging and then pressing, effectively avoiding jamming and ensuring continuous and reliable feeding.

[0058] See Figures 6 to 11 As shown, the reciprocating swing mechanism also includes two compression springs 64, which are symmetrically arranged along the width direction of the pressing arm 52. An upper spring seat 641 is slidably provided on the slide rail 511. A connecting rod 513 is fixedly connected between the upper spring seat 641 and the slide block 51. A lower spring seat 642 is provided on the upper surface of the pressing arm 52. One end of the compression spring 64 is fixedly connected to the upper spring seat 641, and the other end is fixedly connected to the lower spring seat 642.

[0059] As the pressure arm 52 swings upward, the compression springs 64 on both sides are compressed and shortened, thus being compressed and storing elastic potential energy. When the driving action is released, the compressed springs 64 release energy, generating a downward restoring force, pushing the pressure arm 52 back down, and causing the entire pressure arm 52 to swing smoothly downward around the upper hinge point, so that its lower end is pressed back against the bottom of the feed chute 3.

[0060] See Figures 5 to 11 As shown, the reciprocating translation mechanism includes an electric push rod 7, which is installed on the top of the feed slide 3 along the slide rail 511. The output end of the electric push rod 7 is fixedly connected to the slide block 51. The slide rail 511 is provided with limiting structures 71 in front of and behind the slide block 51, and the two limiting structures 71 form a stroke range for the slide block 51 to reciprocate.

[0061] During operation, the electric push rod 7 extends and retracts along the feeding direction, causing the slide 51 to move back and forth on the slide rail 511. When the slide 51 moves forward to the front position, the limiting structure 71 at the front prevents it from moving further forward, ensuring that the pressing arm 52 does not retract excessively and leave the working area. When the slide 51 moves backward to the rear position, the limiting structure 71 at the rear stops it, preventing excessive pushing.

[0062] The distance between the two limiting structures 71 precisely limits the movement range of the slide 51, so that it always moves smoothly within the set stroke range, thereby driving the pressing arm 52 to synchronously complete the forward pushing and backward resetting action cycle, ensuring the stability of the feeding rhythm.

[0063] See Figures 9 to 11 As shown, the limiting structure 71 includes a fixing block 711 and a limiting rod 712. The fixing block 711 is fixedly connected to the slide rail 511. The fixing block 711 has a through hole along the slide rail 511 for the limiting rod 712 to pass through. A buffer spring 713 is provided between the limiting rod 712 and the fixing block 711. One end of the buffer spring 713 is fixedly connected to the limiting rod 712, and the other end is fixedly connected to the fixing block 711.

[0064] When the slide block 51 approaches the end of its stroke during reciprocating movement, it will collide with the limiting structure 71 in front or behind. At this time, the limiting rod 712, which is impacted, retracts inward along the slide rail 511, compressing the buffer spring 713 between it and the fixed block 711, converting the kinetic energy of the slide block 51 into the elastic potential energy of the buffer spring 713, thereby effectively absorbing the impact energy and reducing the collision force.

[0065] After the slide block 51 moves away in the opposite direction, the buffer spring 713 releases its stored energy, pushing the limit rod 712 to automatically return to its initial position, ready for the next buffering action. The entire process avoids vibration, noise, and structural damage caused by rigid collisions through elastic buffering.

[0066] This invention forms a continuous constraint system from front to back by sequentially setting a guide curtain 31, a dynamic pressing component 5, and an arc-shaped guide plate 11 along the feeding path, effectively suppressing the upward tilting, deviation, and rebound of branches. The pressing arm 52 integrates a planar section 523, a micro-arched pressing section 522, and a flexible plow head 521, forming a continuous pressing guide surface from top to bottom. This guides the branches in stages, provides elastic buffering and pressing, and combs and sweeps them. Side gaps are simultaneously sealed by rubber strips 53 on both sides to prevent small branches from getting stuck. This avoids branches affecting the rotation of the rotating cutter cylinder 21, ensuring continuous and efficient cutting, and achieving automatic material clearing and reliable anti-clogging.

[0067] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A wood chipper with automatic material clearing and anti-clogging function, comprising a housing, a rotary cutting mechanism disposed within the housing, and a feed chute inclined above the rotary cutting mechanism, wherein the top of the housing is provided with a discharge chute communicating with its interior; Its features are, The feed chute is equipped with a dynamic pressing component, which includes: A slide block is slidably disposed inside the feed slide, and the top of the feed slide is provided with a slide rail for the slide block to be slidably disposed thereon, the slide rail extending along the feed direction of the feed slide; The pressure arm has a plate-like structure and is arranged obliquely along the feed slide. The upper end of the pressure arm is hinged to the slide base, and the lower end extends obliquely downward to the lower surface of the feed slide. The slide base is provided with a hinge part for the upper end of the pressure arm to be hinged. The slide block is provided with a reciprocating swing mechanism that is connected to the upper end of the pressing arm, which is used to drive the pressing arm to reciprocate around its upper end. The top of the feeding chute is provided with a reciprocating translation mechanism that is connected to the slide block, which is used to drive the pressing arm to perform reciprocating translational motion along the slide rail; The reciprocating swing mechanism and the reciprocating translation mechanism together constitute a composite drive unit, which is used to drive the pressing arm in a composite reciprocating motion state within the feeding chute, which has both pressing and pushing functions.

2. A wood chipper with automatic material clearing and anti-clogging function according to claim 1, characterized in that, Above the rotary cutting mechanism is an arc-shaped guide plate fixedly connected to the housing, which is used to limit the upward warping of the branches after they have been processed by the pressing arm.

3. A wood chipper with automatic material clearing and anti-clogging function according to claim 1, characterized in that, The lower end of the pressing arm is provided with a flexible plow head, which is made of rubber material, and the bottom surface of the flexible plow head is provided with a combing groove that runs through the feeding direction.

4. A wood chipper with automatic material clearing and anti-clogging function according to claim 3, characterized in that, The lower half of the pressing arm, located above the flexible plow head, is provided with a pressing section. The pressing section has a continuous slightly arched elastic structure along the direction of the feed slide, which is used to provide a buffering effect during the pressing process.

5. A wood chipper with automatic material clearing and anti-clogging function according to claim 4, characterized in that, The upper part of the pressing arm is a planar section. The planar section, the pressing section, and the flexible plow head are connected sequentially along the feeding direction to form a continuous pressing guide surface.

6. A wood chipper with automatic material clearing and anti-clogging function according to claim 5, characterized in that, Rubber strips are provided on both sides of the pressing arm. The rubber strips extend along the length of the pressing arm and slide against the side wall of the feeding chute to prevent tree branches from getting stuck between the pressing arm and the side wall of the feeding chute.

7. A wood chipper with automatic material clearing and anti-clogging function according to claim 1, characterized in that, The reciprocating swing mechanism includes a pressing cylinder, which is vertically mounted on the slide. The upper end of the pressing arm is provided with a rotating part that is rotatably connected to the hinge. A pressure plate extends upward from the rotating part. The output end of the pressing cylinder is provided with an abutting head that presses against the upper surface of the pressure plate.

8. A wood chipper with automatic material clearing and anti-clogging function according to claim 7, characterized in that, The reciprocating swing mechanism also includes two compression springs, which are symmetrically arranged along the width direction of the pressing arm. An upper spring seat is slidably provided on the slide rail, and a connecting rod is fixedly connected between the upper spring seat and the slide. A lower spring seat is provided on the upper surface of the pressing arm. One end of the compression spring is fixedly connected to the upper spring seat, and the other end is fixedly connected to the lower spring seat.

9. A wood chipper with automatic material clearing and anti-clogging function according to claim 1, characterized in that, The reciprocating translation mechanism includes an electric push rod, which is installed on the top of the feed slide along the slide rail direction. The output end of the electric push rod is fixedly connected to the slide block. The slide rail is provided with limiting structures at the front and rear of the slide block, and the two limiting structures form a travel range for the slide block to reciprocate.

10. A wood chipper with automatic material clearing and anti-clogging function according to claim 9, characterized in that, The limiting structure includes a fixed block and a limiting rod. The fixed block is fixedly connected to the slide rail. The fixed block has a through hole along the slide rail for the limiting rod to pass through. A buffer spring is provided between the limiting rod and the fixed block. One end of the buffer spring is fixedly connected to the limiting rod and the other end is fixedly connected to the fixed block.

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