Multi-mode hydraulic log splitter

Abstract

This application relates to a multi-mode hydraulic log splitter, belonging to the field of wood processing machinery technology. The log splitter includes a frame, a base, a lifting cutter head assembly driven by a drive device, and a lifting frame hinged to one side of the frame or base. The lifting cutter head assembly has a first connecting member, and the lifting frame is connected to a flexible traction member. When the flexible traction member is engaged with the first connecting member, the upward movement of the lifting cutter head assembly pulls the lifting frame from the loading position to the closing position, achieving automatic log loading. Furthermore, the bottom of the frame has a reinforcing rib, and the first connecting member and the reinforcing rib have overlapping projections in the vertical direction. When the cutter head descends to its limit position, the first connecting member abuts against the reinforcing rib, maintaining a preset safety gap between the blade and the base. This invention utilizes the reuse of cutter head power to achieve low-cost automatic lifting and provides reliable passive safety limits through structural interference, effectively improving the efficiency and safety of log splitting operations.

Description

Technical Field

[0001] This application relates to the field of agricultural and forestry machinery technology, and in particular to a multi-mode hydraulic log splitter. Background Technology

[0002] Log splitters are commonly used machines in timber processing and forestry operations, primarily used to split round logs into blocks suitable for combustion or further processing. Based on their structure, log splitters are mainly divided into horizontal and vertical types. For logs with larger diameters and heavier weights, vertical log splitters are more widely used when processing large-sized timber because they allow the logs to be placed directly on the base for splitting without needing to be raised to the worktable.

[0003] However, existing vertical log splitters still have the following technical problems in actual use: First, loading is difficult and costly: When processing large-diameter logs, although it is not necessary to lift them to waist height, it still requires a great deal of physical strength to move the heavy logs from a horizontal position and place them upright on the base. Manual operation is not only labor-intensive, but also prone to causing back injuries. In order to solve this problem, some high-end log splitters are equipped with automatic lifting mechanisms, but these mechanisms usually require the addition of independent hydraulic cylinders or electric motors as drive sources, which not only significantly increases the manufacturing cost and maintenance difficulty of the equipment, but also makes the hydraulic system of the whole machine more complex.

[0004] Secondly, there is a lack of effective passive safety limit mechanisms: existing wood splitter blades usually rely on the operator's visual inspection or electronic limit switches to stop during the descent process. Once the electronic components malfunction or the operator makes a mistake, the huge hydraulic thrust may cause the blade to directly hit the metal base, causing equipment damage (such as blade roll-out or hydraulic cylinder piston hitting the bottom).

[0005] In addition, the stability and safety during the operation are insufficient: logs are prone to rolling or tipping over when they are about to be split or when they are split open, forcing operators to hold the logs up by hand at close range, which greatly increases the risk of being injured by flying wood pieces or accidentally injured by the blade. Summary of the Invention

[0006] To address the aforementioned issues, this application provides a low-cost, highly safe, and stable multi-mode hydraulic log splitter.

[0007] To achieve the above objectives, the multi-mode hydraulic log splitter designed in this application includes: A frame with a base at its bottom, and a reinforcing rib is fixed at the angle where the frame and the base are connected; The lifting cutter head assembly is slidably mounted vertically on the frame, and the lifting cutter head assembly is driven by a drive device to perform lifting movements; A lifting frame, hinged to one side of the frame or the base, is configured to rotate relative to the frame between a horizontal loading position and a vertical closing position. The lifting cutter head assembly is provided with a first connector, and the lifting frame is connected with a flexible traction member. One end of the flexible traction member is connected to the lifting frame, and the other end is configured to be connected to the first connector, so that when the flexible traction member is connected to the first connector, the upward movement of the lifting cutter head assembly drives the lifting frame to flip from the loading position to the closing position through the flexible traction member. The orthographic projection of the first connector in the vertical direction at least partially coincides with the reinforcing rib, and the first connector and the reinforcing rib are configured such that when the lifting cutter head assembly descends to the lower limit position, the bottom end of the first connector abuts against the reinforcing rib, so that a preset safety gap is formed between the blade of the lifting cutter head assembly and the upper surface of the base.

[0008] Preferably, the upper part of the frame is further provided with a second connector; the flexible traction member is configured to be selectively connected to the first connector or the second connector; when the flexible traction member is connected to the first connector, the lifting frame and the lifting cutter head assembly form a linkage cooperation; when the flexible traction member is connected to the second connector, the lifting frame is held in the closed position.

[0009] Preferably, the flexible traction member is a chain, which is composed of several chain links connected in series; the first connector and the second connector are both hooks, and the hooks have hook grooves suitable for accommodating the chain links; the free end of the flexible traction member is connected by hooking its chain links into the hook grooves of the first connector or the second connector.

[0010] Preferably, the lifting frame includes a hinge seat, a lifting arm, and a limiting baffle; one end of the lifting arm is hinged to the hinge seat, and the other end is connected to the limiting baffle; the lifting arm extends in a bent or arc shape to define an asymmetrical concave receiving space between the lifting arm and the limiting baffle; the inner surface of the limiting baffle is provided with a plurality of anti-slip teeth, the tips of which extend toward the concave receiving space.

[0011] Preferably, the lifting arm is further provided with a wedge-shaped support plate, which is located on the bottom side of the concave receiving space. The support plate has a first end away from the limiting baffle and a second end close to the limiting baffle. The thickness of the first end is less than the thickness of the second end, and the first end abuts against the ground when the material is being fed.

[0012] Preferably, the frame is further provided with a log auxiliary fixing component, which includes a swing arm and an abutment; one end of the swing arm is hinged to the frame, and the abutment is connected to the other end of the swing arm; the swing arm is configured to rotate between a clearance position and a working position to drive the abutment to move toward the base.

[0013] Preferably, the swing arm has a guide hole extending along its length; the abutment is slidably connected to the swing arm through the guide hole via a locking assembly to adjust the extension length of the abutment relative to the swing arm; the bottom end face of the abutment has a serrated structure; an elastic reset member is connected between the swing arm and the frame, one end of the elastic reset member is connected to the swing arm, and the other end is connected to a position on the frame higher than the hinge point of the swing arm.

[0014] Preferably, a hydraulic directional valve group for controlling the movement of the lifting cutter head assembly is installed on the upper part of the frame; the outer periphery of the hydraulic directional valve group is covered with a rigid protective cover; the hydraulic oil pipe connected to the hydraulic directional valve group extends vertically upward along the frame, and the main body of the hydraulic oil pipe is fixed to the side of the frame away from the working surface of the lifting cutter head assembly.

[0015] Preferably, the lower part of the frame is hinged to a movable chassis via a pivot; an engine and a fuel tank are mounted on the movable chassis, and the positions of the engine and fuel tank relative to the pivot are configured to generate a balancing torque that resists the overturning torque of the frame; a locking element is provided at the connection between the frame and the movable chassis for locking the frame relative to the movable chassis via a pin.

[0016] Preferably, the lifting cutter head assembly includes a main cutter head and a composite cutter wing detachably connected to the outside of the main cutter head; the main cutter head has a single-edged wedge structure, the composite cutter wing has a multi-edged expanded structure, and the splitting angle of the composite cutter wing is greater than the wedge angle of the main cutter head.

[0017] The multi-mode hydraulic log splitter designed in this application utilizes the return motion of the lifting cutter head assembly to traction the flexible connector and drive the lifting frame to rotate, achieving automatic log feeding without the need for an additional drive source, thus reducing manufacturing costs and labor intensity. The structural interference between the connector and the base reinforcing ribs creates a mechanical hard limit, reserving a safety gap at the cutter head's descent limit to prevent the blade from impacting the base and protect the operator's feet. Combined with the log auxiliary fixing assembly and the self-centering lifting frame with anti-slip teeth, the rolling tendency of the logs during handling and splitting is effectively restrained, enabling stable single-person operation. Furthermore, the rigid protection of the hydraulic valve group and the high-level layout of the oil pipes improve the equipment's durability under harsh working conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multi-mode hydraulic wood splitter provided in the embodiments of this application.

[0019] Figure 2 This is a structural schematic diagram of the multi-mode hydraulic wood splitter provided in the embodiments of this application from another perspective.

[0020] Figure 3 yes Figure 1 The right view.

[0021] Figure 4 yes Figure 1 The left view.

[0022] Figure 5 This is a schematic diagram showing the vertical arrangement of the first connector and the reinforcing rib provided in the embodiments of this application.

[0023] Figure 6 This is a structural schematic diagram of the lifting frame provided in an embodiment of this application.

[0024] The components include: frame 10, base 11, reinforcing rib 12, lifting cutter head assembly 20, sliding seat 201, first connecting piece 21, main cutter head 22, composite cutter wing 23, drive device 30, lifting frame 40, hinge seat 41, lifting arm 42, limit baffle 43, anti-slip teeth 44, bearing plate 45, flexible traction component 50, second connecting piece 13, log auxiliary fixing assembly 60, swing arm 61, abutment component 62, guide elongated hole 63, locking assembly 64, hydraulic reversing valve group 70, rigid protective cover 71, mobile chassis 80, engine 81, oil tank 82, and locking component 83. Detailed Implementation

[0025] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0026] like Figures 1 to 6 As shown in the figure, this embodiment discloses a multi-mode hydraulic wood splitter, the main structure of which includes a frame 10, a lifting blade assembly 20, a drive device 30, a lifting frame 40, and a flexible traction component 50.

[0027] Specifically, the frame 10 serves as the main support for the entire machine, with a stable base 11 fixedly installed at its bottom to support the logs to be chopped; the lifting cutter head assembly 20 is slidably mounted on the slide rail or guide surface of the frame 10 in a vertical direction. For example, if the frame 10 adopts an I-shaped cross-section structure, the lifting cutter head assembly 20 can be slidably mounted on the side of the I-shaped frame 10 via the sliding seat 201; and the drive device 30 is preferably a hydraulic cylinder in this embodiment, which is installed on the top of the frame 10, and its output end is connected to the lifting cutter head assembly 20 to drive the lifting cutter head assembly 20 to perform downward chopping and upward return lifting movements.

[0028] To address the difficulty of loading large-diameter logs, this embodiment includes a lifting frame 40 hinged to one side of the frame 10 or the base 11. Specifically, as shown... Figure 1 , Figure 6 As shown, the lifting frame 40 can rotate about its hinge point, thereby flipping between a horizontal state near the ground (i.e., the loading position) and a vertical state near the frame 10 (i.e., the closing position).

[0029] Among them, such as Figure 2 As shown, a first connector 21 is fixedly provided on the side wall of the lifting cutter head assembly 20, and a flexible traction member 50 is connected to the other end (i.e., the far end) of the lifting frame 40 relative to the hinge point. One end of the flexible traction member 50 is connected to the lifting frame 40, and the other end is configured to be able to be hooked onto the first connector 21.

[0030] When it is necessary to lift the logs, the operator connects the flexible traction member 50 to the first connector 21. At this time, as the drive device 30 drives the lifting cutter head assembly 20 to move upward (return stroke), the lifting cutter head assembly 20 lifts the lifting frame 40 upward through the flexible traction member 50, causing the lifting frame 40 to flip from the horizontal loading position to the vertical closing position, thereby automatically rolling the logs placed on the lifting frame 40 down or standing them upright on the base 11.

[0031] In some embodiments, to improve device security, such as Figure 2 , Figure 3 As shown, at the angle where the frame 10 and the base 11 connect, i.e., at the root position, a reinforcing rib 12 is welded or bolted on. This reinforcing rib 12 is usually triangular in shape and is used to enhance the connection strength between the frame and the base. Crucially, the position of the first connecting piece 21 on the lifting cutter head assembly 20 is specifically designed, such as... Figure 5 As shown, its orthographic projection in the vertical direction at least partially coincides with the reinforcing rib 12.

[0032] Based on the above positional relationship, the first connector 21 and the reinforcing rib 12 form a matching limiting pair: when the lifting cutter head assembly 20 moves downward to the preset lower limit position, the bottom end face of the first connector 21 will abut against the top or side wall of the reinforcing rib 12 before the blade.

[0033] Through this structural interference, the lifting cutter head assembly 20 is physically prevented from continuing to descend under unexpected working conditions, so that a preset safety gap (e.g., 2-5 cm) is always maintained between the blade of the lifting cutter head assembly 20 and the upper surface of the base 11. This safety gap is sufficient to accommodate the thickness of a foot, thereby avoiding serious crushing accidents, and also preventing the blade from colliding head-on with the metal base.

[0034] In some of the embodiments, such as Figure 2 , Figure 3 As shown, a second connector 13 is also fixedly installed on the upper part (e.g., near the top) of the frame 10. The flexible traction member 50 is configured to selectively connect to the first connector 21 or the second connector 13, thereby realizing the switching between two working modes: Linked lifting mode: When the flexible traction component 50 is connected to the first connecting component 21, the lifting frame 40 reciprocates and flips with the rise and fall of the cutter head for feeding.

[0035] Safety barrier mode: When the flexible traction member 50 is connected to the second connecting member 13, no matter how the cutter head moves, the lifting frame 40 is pulled by the flexible traction member 50 and kept in a vertical closed position. At this time, the lifting frame 40 forms a protective wall on one side of the lifting cutter head assembly 20 to prevent the split wood blocks from flying to the side.

[0036] In this embodiment, the flexible traction member 50 is preferably a metal chain, which is composed of several chain links connected in series and has high strength and flexibility; correspondingly, the first connector 21 and the second connector 13 are both hooks. The hooks are provided with hook grooves suitable for accommodating the wire diameter of the chain links, such as U-shaped grooves or V-shaped grooves, so that by inserting any link of the chain into the hook groove, quick connection and length adjustment can be achieved.

[0037] In some embodiments, such as Figure 3 , Figure 6 As shown, to better grip and stabilize the logs, the lifting frame 40 adopts a non-flat design, specifically including a hinged seat 41, a lifting arm 42, and a limiting baffle 43. Wherein: Lifting arm 42: One end is connected to the hinge seat 41, and the other end is connected to the limiting baffle 43. In this embodiment, the lifting arm 42 is not a straight plate, but extends in a bent or arc shape, for example, in an obtuse L-shape.

[0038] Concave receiving space: Due to the bending design of the lifting arm 42 and the presence of the limiting baffle 43, an asymmetrical concave receiving space is formed between the two. When the log is placed in it, gravity causes the log to automatically roll into the depth of the concave space, achieving automatic centering.

[0039] Anti-slip teeth 44: Several sharp anti-slip teeth 44 are protruding from the inner surface of the limiting baffle 43, with the tips of these teeth extending toward the concave receiving space. During the lifting process, the log is pressed against the limiting baffle 43 under the component of gravity, and the anti-slip teeth 44 penetrate the surface of the log, effectively preventing the log from slipping axially.

[0040] In addition, the lifting arm 42 is also provided with a wedge-shaped support plate 45, which is located at the bottom of the concave receiving space. In this embodiment, the support plate 45 has two ends with uneven thickness: the first end away from the limiting baffle 43 is thinner, and the second end closer to the limiting baffle 43 is thicker. When the lifting frame 40 is in a horizontal loading position, the thinner first end can be close to or abut against the ground, forming a bucket shape, so that the operator can roll the log into the lifting frame 40 without having to lift it with effort.

[0041] In some embodiments, such as Figure 1 , Figure 2 , Figure 5 As shown, in order to achieve safe operation by a single person, a log auxiliary fixing component 60 is also installed on the frame 10 at the side of the lifting cutter head assembly 20. This component includes a swing arm 61 and abutment 62; one end of the swing arm 61 is hinged to the frame 10 and can rotate around the hinge axis.

[0042] Working principle: The swing arm 61 is configured to rotate between a clearance position (usually a high position, which does not interfere with the placement of logs) and a working position (low position). In use, the operator presses down the handle, which drives the swing arm 61 to rotate, thereby driving the end abutment 62 to move towards the base 11, pressing the log firmly onto the base 11.

[0043] To accommodate logs of different diameters, the swing arm 61 has a guide hole 63 extending along its length. The abutment 62 passes through this guide hole 63 via a locking assembly 64 (such as a bolt knob with a handle), thus slidably connecting to the swing arm 61. Loosening the locking assembly 64 adjusts the extension length of the abutment 62 relative to the swing arm 61. Furthermore, the bottom surface of the abutment 62 has a serrated structure to increase the gripping force on the log.

[0044] In some embodiments, to improve ease of operation, an elastic reset member (not shown in the figure, such as a tension spring or torsion spring) is also connected between the swing arm 61 and the frame 10. One end of the reset member is connected to the swing arm, and the other end is connected to the high part of the frame. This member is used to automatically pull the swing arm 61 back to the avoidance position after the user releases their grip.

[0045] In some embodiments, such as Figure 1 , Figure 2 As shown, a hydraulic reversing valve assembly 70 is installed on the upper part of the frame 10 to control the movement of the lifting cutter head assembly 20. To prevent flying wood blocks from damaging the delicate valve body, the outer periphery of the hydraulic reversing valve assembly 70 is covered with a rigid protective cover 71 (e.g., a bent steel plate).

[0046] Meanwhile, the hydraulic oil pipes connected to the valve assembly adopt a special routing layout: the main body of the oil pipe extends vertically upward along the frame 10 and is fixed to the side of the frame 10 away from the working surface of the lifting cutter head assembly 20 (i.e., the back of the frame). This high-position and back-facing routing method ensures that the fragile oil pipes completely avoid the conventional splash area when the wood is split.

[0047] In some embodiments, such as Figure 1 , Figure 2 As shown, in order to balance mobility and operational stability, the lower part of the frame 10 is hinged to a mobile chassis 80 (usually with wheels and a trailer hitch) via a horizontal pivot.

[0048] The mobile chassis 80 is equipped with an engine 81 and an oil tank 82 that provide power to the hydraulic system. The positions of these two heavy components relative to the pivot are configured to generate a balancing torque that resists the gravitational torque when the frame 10 is flipped from a horizontal transport state to a vertical working state, so that a single person can easily complete the erection operation of the frame.

[0049] In addition, such as Figure 1 , Figure 2 As shown, a locking element 83 is provided between the frame 10 and the mobile chassis 80 to lock the relative angle between the two in the transport or working state.

[0050] In some embodiments, such as Figure 2 , Figure 4 As shown, the lifting blade assembly 20 adopts a modular design, including a main blade head 22 and a composite blade wing 23 (such as a quarter blade) detachably connected to the outside of the main blade head 22. The main blade head 22 is a single-edged wedge shape, which is conducive to cutting; the composite blade wing 23 has a multi-edged expanding structure, and its splitting angle is designed to be greater than the wedge angle of the main blade head 22, which is used to quickly widen the crack after the main blade cuts in, thereby improving the efficiency of splitting wood.

[0051] The multi-mode hydraulic log splitter provided in this application embodiment utilizes the return motion of the lifting cutter head assembly to traction the flexible connector and drive the lifting frame to rotate, achieving automatic log feeding without the need for an additional drive source, thus reducing manufacturing costs and labor intensity. The structural interference between the connector and the base reinforcing ribs creates a mechanical hard limit, reserving a safety gap at the cutter head's descent limit position to prevent the blade from impacting the base and protect the operator's feet. Combined with the log auxiliary fixing assembly and the self-centering lifting frame with anti-slip teeth, the rolling tendency of the logs during handling and splitting is effectively restrained, enabling stable single-person operation. Furthermore, the rigid protection of the hydraulic valve group and the high-level layout of the oil pipes improve the equipment's durability under harsh working conditions.

[0052] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] In the description of this application, it should also be noted that, unless otherwise expressly 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 application according to the specific circumstances.

[0054] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-mode hydraulic log splitter, characterized in that, include: A frame with a base at its bottom, and a reinforcing rib is fixed at the angle where the frame and the base are connected; The lifting cutter head assembly is slidably mounted vertically on the frame, and the lifting cutter head assembly is driven by a drive device to perform lifting movements; A lifting frame, hinged to one side of the frame or the base, is configured to rotate relative to the frame between a horizontal loading position and a vertical closing position. The lifting cutter head assembly is provided with a first connector, and the lifting frame is connected with a flexible traction member. One end of the flexible traction member is connected to the lifting frame, and the other end is configured to be connected to the first connector, so that when the flexible traction member is connected to the first connector, the upward movement of the lifting cutter head assembly drives the lifting frame to flip from the loading position to the closing position through the flexible traction member. The orthographic projection of the first connector in the vertical direction at least partially coincides with the reinforcing rib, and the first connector and the reinforcing rib are configured such that when the lifting cutter head assembly descends to the lower limit position, the bottom end of the first connector abuts against the reinforcing rib, so that a preset safety gap is formed between the blade of the lifting cutter head assembly and the upper surface of the base.

2. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The upper part of the frame is also provided with a second connector; the flexible traction member is configured to be selectively connected to the first connector or the second connector; when the flexible traction member is connected to the first connector, the lifting frame and the lifting cutter head assembly are linked together; when the flexible traction member is connected to the second connector, the lifting frame is held in the closed position.

3. The multi-mode hydraulic log splitter according to claim 2, characterized in that, The flexible traction component is a chain, which is composed of several chain links connected in series; the first connector and the second connector are both hooks, and the hooks have hook grooves suitable for accommodating the chain links; the free end of the flexible traction component is connected by hooking its chain links into the hook grooves of the first connector or the second connector.

4. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The lifting frame includes a hinged seat, a lifting arm, and a limiting baffle; one end of the lifting arm is hinged to the hinged seat, and the other end is connected to the limiting baffle; the lifting arm extends in a bent or arc shape to define an asymmetrical concave receiving space between the lifting arm and the limiting baffle; the inner surface of the limiting baffle is provided with a plurality of anti-slip teeth, the tips of which extend toward the concave receiving space.

5. The multi-mode hydraulic log splitter according to claim 3, characterized in that, The lifting arm is also provided with a wedge-shaped support plate. The support plate is located on the bottom side of the concave receiving space. The support plate has a first end away from the limiting baffle and a second end close to the limiting baffle. The thickness of the first end is less than the thickness of the second end, and the first end abuts against the ground when the material is loaded.

6. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The frame is also provided with a log auxiliary fixing component, which includes a swing arm and a stop member; one end of the swing arm is hinged to the frame, and the stop member is connected to the other end of the swing arm; the swing arm is configured to rotate between a clearance position and a working position to drive the stop member to move closer to the base.

7. The multi-mode hydraulic log splitter according to claim 6, characterized in that, The swing arm has a guide hole extending along its length; the abutment is slidably connected to the swing arm through the guide hole via a locking assembly to adjust the extension length of the abutment relative to the swing arm; the bottom end face of the abutment has a serrated structure; an elastic reset member is connected between the swing arm and the frame, one end of the elastic reset member is connected to the swing arm, and the other end is connected to a position on the frame higher than the hinge point of the swing arm.

8. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The upper part of the frame is equipped with a hydraulic directional valve group for controlling the movement of the lifting cutter head assembly; the outer periphery of the hydraulic directional valve group is covered with a rigid protective cover; the hydraulic oil pipe connected to the hydraulic directional valve group extends vertically upward along the frame, and the main body of the hydraulic oil pipe is fixed to the side of the frame away from the working surface of the lifting cutter head assembly.

9. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The lower part of the frame is hinged to a movable chassis via a pivot; an engine and a fuel tank are mounted on the movable chassis, and the positions of the engine and fuel tank relative to the pivot are configured to generate a balancing torque that resists the overturning torque of the frame. A locking element is provided at the connection between the frame and the mobile chassis, which is used to lock the frame relative to the mobile chassis by means of a pin.

10. The multi-mode hydraulic log splitter according to claim 1, characterized in that, The lifting cutter head assembly includes a main cutter head and a composite cutter wing detachably connected to the outside of the main cutter head; the main cutter head has a single-edged wedge structure, the composite cutter wing has a multi-edged extended structure, and the splitting angle of the composite cutter wing is greater than the wedge angle of the main cutter head.

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