Double-speed double-drive hydraulic wood splitting machine

Abstract

This invention relates to the field of hydraulic log splitter technology, and more particularly to a dual-speed, dual-drive hydraulic log splitter, which overcomes the shortcomings of existing technologies. It includes a log splitting platform with an oil cylinder mounted on it. A cylinder is mounted at the top of the oil cylinder, and a splitting blade body is installed at the telescopic end of the cylinder. A motor, a main pump, and a hydraulic control valve are mounted on the outer wall of the oil cylinder. A motor pump is installed at the output end of the motor, and the hydraulic control valve also has a control mechanism for operation. When the cylinder descends, the device operates in two speeds. For small-diameter logs or logs that can be easily split, the fast speed is sufficient. When encountering large logs where the splitting force is insufficient, the valve core is pressed down to the second speed position for slow, high-force splitting operation, improving work efficiency. It also features two drive modes to enhance practicality in different operating environments. Furthermore, it requires both hands to operate, improving operational safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic wood splitting machine, and particularly relates to a double-speed double-drive hydraulic wood splitting machine. BACKGROUND

[0002] The hydraulic wood splitting machine is also called hydraulic splitting machine or hydraulic wood splitter, which is a mechanical device using hydraulic technology to split wood and other materials into two halves. It is usually used in the wood processing industry to quickly and effectively split round logs for further processing or convenient stacking.

[0003] At present, the wood splitting speed of the hydraulic wood splitting machine cannot be adjusted, and the splitting force is fixed whether it is large wood or small wood, which leads to slow descent of the splitting knife of the hydraulic wood splitting machine when splitting small wood, low wood splitting efficiency, and the existing wood splitting machine is mostly single-handed, and the other hand has certain safety hazards when holding the wood. Therefore, the double-speed double-drive hydraulic wood splitting machine is proposed to solve the above problems. SUMMARY

[0004] The purpose of the present application is to solve the problem that the wood splitting speed of the existing hydraulic wood splitting machine cannot be adjusted, and to adapt to large-diameter wood, the wood splitting speed is relatively slow, and this speed is too slow for small-diameter wood, and the wood splitting efficiency is low, and the existing wood splitting machine is mostly single-handed, and the other hand has certain safety hazards when holding the wood. The double-speed double-drive hydraulic wood splitting machine is proposed to solve the above problems.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A double-speed double-drive hydraulic wood splitting machine, comprising a wood splitting bottom platform, wherein an oil cylinder is arranged on the wood splitting bottom platform, a top end of the oil cylinder is provided with an oil cylinder, and a telescopic end of the oil cylinder is provided with a splitting knife main body; an outer wall of the oil cylinder is provided with a motor, a main pump and a hydraulic control valve; an output end of the motor is provided with a motor pump, and both sides of the main pump are respectively provided with an oil inlet three-way pipe and an oil return three-way pipe;

[0007] One end of the oil inlet three-way pipe in communication with the main pump is provided with a first one-way valve, the other end of the oil inlet three-way pipe is communicated with the motor pump through a motor pump oil output pipe, and the last end of the oil inlet three-way pipe is communicated with the hydraulic control valve through a valve oil inlet pipe; a second one-way valve is arranged between the motor pump oil output pipe and the motor pump;

[0008] One end of the oil return three-way pipe in communication with the main pump is communicated with an oil return port, the other end of the oil return three-way pipe is communicated with the bottom of the oil cylinder through an oil suction pipe, and the last end of the oil return three-way pipe is communicated with the oil inlet of the motor pump through a soft pipe;

[0009] The hydraulic control valve is communicated with the top end of the oil cylinder through a rodless cavity oil pipe, communicated with the bottom end of the oil cylinder through a rod cavity oil pipe, and communicated with the oil cylinder through an oil return pipe;

[0010] The hydraulic control valve is further provided with a control mechanism for operation.

[0011] As a preferred technical solution of the present application, the surface of the wood splitting bottom platform is provided with a convex rib, and the left side of the wood splitting bottom platform is fixed with a left guardrail, and the right side of the wood splitting bottom platform is provided with a right guardrail, and the bottom of the right guardrail is hingedly connected with the wood splitting bottom platform.

[0012] The above components achieve the effect of limiting wood during wood splitting.

[0013] As a preferred technical solution of the present application, the wood splitting knife body is slidingly installed on the oil cylinder, and a guide rail clamping plate is arranged on one side of the tail end of the wood splitting knife body, and an iron chain hook is arranged on the other side of the tail end of the wood splitting knife body, and a hanging chain is fixed on the right guardrail, and the upper end of the hanging chain is hung on the iron chain hook.

[0014] The above components achieve the effect that the right guardrail is rotated upward to support the wood during the upward movement of the wood splitting knife body by hanging the hanging chain on the iron chain hook.

[0015] As a preferred technical solution of the present application, the control mechanism comprises an intermediate yoke plate rotatably connected with a valve core rod in the hydraulic control valve, a rear yoke plate is installed at the rear end of the intermediate yoke plate, a middle control rod is installed on the rear yoke plate, a right-hand control rod is connected to one end of the intermediate yoke plate through a first adjusting screw, a transverse connecting plate is connected to the other end of the intermediate yoke plate through a second adjusting screw, a longitudinal connecting plate is arranged at the outer end of the transverse connecting plate, a guide rail is connected to the top end of the longitudinal connecting plate through a spring, and a left-hand control rod is installed at the lower end of the longitudinal connecting plate.

[0016] The above components achieve the effect that when operating with one hand, the valve body cannot be opened for oil supply, and both hands must be pressed simultaneously to move the control oil cylinder downward, so that the intermediate yoke plate pulls the valve core to open the valve to work, and downward movement is dangerous, thus playing a safety protection role. Pushing the right-hand control rod upward can control the upward movement of the oil cylinder, and when reaching the upper limit stopper, the guide rail pushes the middle control rod to make the valve core rebound and automatically stop.

[0017] As a preferred technical solution of the present application, the guide rail is provided with an upper limit stopper and a lower limit stopper, and the upper end of the guide rail is overlapped on the intermediate yoke plate.

[0018] The above components achieve the effect of adjusting the movement of the oil cylinder through the upper limit stopper and the lower limit stopper.

[0019] As a preferred embodiment of the present invention, both the first adjusting screw and the second adjusting screw include a screw and a connector threaded to both ends of the screw. The two ends of the first adjusting screw are respectively hinged to the middle shift fork plate and the right-hand control lever, and the two ends of the second adjusting screw are respectively hinged to the middle shift fork plate and the cross plate.

[0020] The effect achieved by the above components is that by adjusting the lengths of the first adjusting screw and the second adjusting screw, the operating height of the right-hand control lever, the middle shift fork plate, and the right-hand control lever can be adjusted.

[0021] As a preferred embodiment of the present invention, the longitudinal connecting plate is provided with a serrated groove, and one end of the transverse connecting plate is installed in the serrated groove by bolts.

[0022] The effect achieved by the above components is that the height of the longitudinal connecting plate can be adjusted by adjusting the installation position of the bolts at the outer end of the transverse connecting plate.

[0023] As a preferred embodiment of the present invention, the top of the oil cylinder is provided with an oil filling port, the bottom of the oil filling port is provided with an oil return filter, the oil cylinder is also provided with an oil level indicator, and the bottom of the oil cylinder is provided with an oil drain plug.

[0024] The effect achieved by the above components is to facilitate timely understanding of the liquid level inside the oil drum.

[0025] As a preferred embodiment of the present invention, the main pump is provided with a main pump input shaft at its outer end. The main pump input shaft is connected to an external tractor and drives the main pump to work through the tractor's rear output transmission shaft.

[0026] The aforementioned components achieve the following effect: providing an alternative operating mode, giving this device two operating modes: one is PTO drive, where the main pump is driven by the tractor's rear output drive shaft; the other is motor drive, where the motor pump operates. One-way valves are designed at the output ends of both the main pump and the motor pump, therefore, neither operating mode will generate back-pumping hydraulic pressure that could cause damage.

[0027] The beneficial effects of this invention are:

[0028] 1. When the hydraulic cylinder of this device descends, it operates in two speeds. In the fast speed, the control valve simultaneously supplies oil to the hydraulic cylinder inlet from both the oil inlet and outlet, accelerating the descent. In the slow speed, only the oil inlet supplies oil. The descent speed of the splitting blade can be adjusted by setting a dual-speed regulator to adapt to splitting wood of different diameters and improve work efficiency.

[0029] 2, the device single-handedly down pressure operation, can not open the valve body for oil, must press the control cylinder downward movement with both hands, so that the middle fork plate pull valve core open valve can work, downward movement has dangerous, therefore played the safety protection function. Push the right hand control lever upward, the control cylinder can be controlled upward, when reaching the upper limit stopper, the guide rail pushes the middle control lever so that the valve core rebounds and stops automatically. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a front view thereof is shown in the figure.

[0031] Figure 2 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a side view thereof is shown in the figure.

[0032] Figure 3 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a left side of an oil circuit connection thereof is shown in the figure.

[0033] Figure 4 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a right side of an oil circuit connection thereof is shown in the figure.

[0034] Figure 5 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a control mechanism thereof is shown in the figure.

[0035] Figure 6 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a splitting knife main body thereof is shown in the figure.

[0036] Figure 7 A double-speed double-drive hydraulic wood splitting machine is provided, and a structure schematic view of a hydraulic principle thereof is shown in the figure.

[0037] In the figure: 1, wood splitting bottom platform; 2, oil cylinder; 21, oil drain screw plug; 22, oil mark; 23, oil filling port; 24, oil return filter; 3, oil cylinder; 4, splitting knife main body; 41, guide rail clamping plate; 42, iron chain hook; 5, left guardrail; 6, right guardrail; 7, hanging chain; 8, motor; 81, motor pump; 9, main pump; 91, main pump input shaft; 92, oil inlet three-way pipe; 10, hydraulic control valve; 101, control mechanism; 1011, middle fork plate; 1012, first adjusting screw; 1013, right hand control lever; 1014, rear fork plate; 1015, second adjusting screw; 1016, transverse connecting plate; 1017, longitudinal connecting plate; 1018, left hand control lever; 1019, guide rail; 1020, lower limit stopper; 1021, upper limit stopper; 1022, middle control lever; 11, oil return three-way pipe; 12, first check valve; 13, oil suction pipe; 14, second check valve; 15, motor pump output oil pipe; 16, valve oil inlet pipe; 17, rod cavity oil pipe; 18, rodless cavity oil pipe; 19, oil return pipe. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 invention 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 invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Reference Figure 1 , Figure 2 A dual-speed, dual-drive hydraulic log splitter includes a log splitting platform 1, an oil cylinder 2 mounted on the platform 1, an oil cylinder 3 mounted at the top of the oil cylinder 2, a splitting blade body 4 mounted on the telescopic end of the oil cylinder 3, raised ridges on the surface of the platform 1, a left guardrail 5 fixed to the left side of the platform 1, a right guardrail 6 mounted on the right side of the platform 1, the bottom of the right guardrail 6 being hinged to the platform 1, and the splitting blade body 4 slidingly mounted on the oil cylinder 2, with a [missing information - likely a design element] on one side of the tail end of the splitting blade body 4. The main body of the splitting blade 4 is equipped with a guide rail plate 41. On the other side of the tail end of the splitting blade body 4, there is an iron chain hook 42. A hanging chain 7 is fixed on the right guardrail 6. The upper end of the hanging chain 7 is suspended on the iron chain hook 42. By suspending the hanging chain 7 on the iron chain hook 42, the splitting blade body 4 can drive the right guardrail 6 to rotate upward during the upward process, thus supporting the wood. By setting the protruding rib, the left guardrail 5 and the right guardrail 6, the wood is restricted during splitting, reducing the factors of wood tipping and sliding, and improving the stability of the wood during splitting.

[0042] Meanwhile, the top end of the oil cylinder 2 is provided with a filling port 23, and below the filling port 23 is provided with an oil return filter 24, and the oil cylinder 2 is further provided with an oil mark 22, and the bottom end of the oil cylinder 2 is provided with a drain plug 21, so that the liquid height in the oil cylinder 2 can be known in time through the oil mark 22, and the drain plug 21 can be used to drain the hydraulic oil in the oil cylinder 2 during maintenance;

[0043] With reference to Figure 3 、 Figure 4 The outer wall of the oil cylinder 2 is provided with a motor 8, a main pump 9 and a hydraulic control valve 10, the output end of the motor 8 is provided with a motor pump 81, and the two sides of the main pump 9 are respectively provided with an oil inlet three-way pipe 92 and an oil return three-way pipe 11, the hydraulic control valve 10 is communicated with the top end of the oil cylinder 3 through a rodless cavity oil pipe 18, and the bottom end of the oil cylinder 3 through a rod cavity oil pipe 17, and the hydraulic control valve 10 is further communicated with the oil cylinder 2 through an oil return pipe 19;

[0044] The one end of the oil inlet three-way pipe 92 communicated with the main pump 9 is provided with a first one-way valve 12, the other end of the oil inlet three-way pipe 92 is communicated with the motor pump 81 through a motor pump output oil pipe 15, and the last end of the oil inlet three-way pipe 92 is communicated with the hydraulic control valve 10 through a valve oil inlet pipe 16, and a second one-way valve 14 is installed between the motor pump output oil pipe 15 and the motor pump 81;

[0045] Secondly, one end of the oil return three-way pipe 11 is communicated with the oil return port of the main pump 9, the other end of the oil return three-way pipe 11 is communicated with the bottom of the oil cylinder 2 through an oil suction pipe 13, and the last end of the oil return three-way pipe 11 is communicated with the oil inlet of the motor pump 81 through a soft pipe;

[0046] With reference to Figure 5 、 Figure 6 、 Figure 7 The hydraulic control valve 10 is further provided with a control mechanism 101 for operation;

[0047] The control mechanism 101 comprises an intermediate yoke plate 1011 connected with the valve core rod in the hydraulic control valve 10, the rear end of the intermediate yoke plate 1011 is provided with a rear yoke plate 1014, the rear yoke plate 1014 is provided with a middle control rod 1022, one end of the intermediate yoke plate 1011 is connected with a right-hand control rod 1013 through a first adjusting screw 1012, the other end of the intermediate yoke plate 1011 is connected with a transverse connecting plate 1016 through a second adjusting screw 1015, the first adjusting screw 1012 and the second adjusting screw 1015 each comprise a screw and a connecting head threadedly connected at both ends of the screw, both ends of the first adjusting screw 1012 are hingedly connected with the intermediate yoke plate 1011 and the right-hand control rod 1013 respectively, both ends of the second adjusting screw 1015 are hingedly connected with the intermediate yoke plate 1011 and the transverse connecting plate 1016 respectively, the length of the first adjusting screw 1012 and the second adjusting screw 1015 is adjusted, and then the operation height of the right-hand control rod 1013, the intermediate yoke plate 1011 and the right-hand control rod 1013 is adjusted;

[0048] The outer end of the transverse connecting plate 1016 is provided with a longitudinal connecting plate 1017, the longitudinal connecting plate 1017 is provided with a sawtooth groove, one end of the transverse connecting plate 1016 is installed in the sawtooth groove through a bolt, the height of the longitudinal connecting plate 1017 is adjusted by adjusting the installation position of the bolt at the outer end of the transverse connecting plate 1016, the top end of the longitudinal connecting plate 1017 is connected with a guide rail 1019 through a spring, the guide rail 1019 is provided with an upper limit stopper 1021 and a lower limit stopper 1020, the guide rail 1019 is clamped in the guide rail clamping plate 41 at the rear side of the wedge main body 4, the movement of the oil cylinder 3 is adjusted through the upper limit stopper 1021 and the lower limit stopper 1020, and the upper end of the guide rail 1019 is lapped on the intermediate yoke plate 1011, and the lower end of the longitudinal connecting plate 1017 is provided with a left-hand control rod 1018;

[0049] When a single hand is pressed down, the valve body cannot be opened to supply oil, and both hands must be pressed at the same time to move the control oil cylinder 3 downward, so that the intermediate yoke plate pulls the valve core to open the valve to work, and downward movement is dangerous, so it plays a safety protection role. Pushing the right-hand control rod 1013 upward can control the upward movement of the oil cylinder 3, and when reaching the upper limit stopper 1021, the guide rail 1019 pushes the middle control rod 1022 to make the valve core rebound and automatically stop;

[0050] Further, the outer end of the main pump 9 is provided with a main pump input shaft 91, which is connected with an external tractor, and the main pump 9 is driven by the tractor rear output transmission shaft to work, thereby providing another working mode, so that the device has two working modes, one is PTO transmission, and the main pump 9 is driven by the tractor rear output transmission shaft to work. The other is motor 8 driving, and the motor 8 drives the motor pump 81 to work. The output end of the main pump 9 and the output end of the motor pump 81 are both designed with a one-way valve, so that the hydraulic pressure caused by the reverse push will not be generated when any one of the working modes is adopted. The main pump 9 is driven by the tractor PTO to work, and the device can be used when it is hung on the tractor. The motor pump 81 can work by electricity when there is no tractor, for example, in a farm, and the motor 8 is plugged into 380V electricity.

[0051] In the embodiment, the device is operated by the control mechanism 101. When the oil cylinder 3 is lowered, it works in two gears. When small-diameter wood or wood that can be easily split is encountered, fast gear work can be performed. When large wood is encountered and the splitting force is not enough, the valve core is pressed to the second gear position, and slow-speed large-splitting work can be performed to improve the work efficiency. When the fast gear is used, the hydraulic control valve 10 supplies oil to the oil cylinder 3 inlet from the oil cylinder 3 suction port and the oil cylinder 3 outlet at the same time, so as to accelerate the lowering speed. When the slow gear is used, only the suction port supplies oil, and the speed of the splitting knife body 4 can be adjusted by setting the double-speed adjustment to adapt to the splitting of wood of different diameters and improve the work efficiency.

[0052] The above is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual-speed, dual-drive hydraulic log splitter, comprising a log splitting platform (1), wherein an oil cylinder (2) is provided on the log splitting platform (1), an oil cylinder (3) is provided at the top of the oil cylinder (2), and a splitting blade body (4) is installed at the telescopic end of the oil cylinder (3), characterized in that, The outer wall of the oil cylinder (2) is equipped with a motor (8), a main pump (9) and a hydraulic control valve (10). The output end of the motor (8) is equipped with a motor pump (81), and the two sides of the main pump (9) are respectively equipped with an oil inlet tee pipe (92) and an oil return tee pipe (11). The oil inlet tee pipe (92) is provided with a first check valve (12) at one end connected to the main pump (9), and the other end of the oil inlet tee pipe (92) is connected to the motor pump (81) through the motor pump output oil pipe (15), and the last end of the oil inlet tee pipe (92) is connected to the hydraulic control valve (10) through the valve inlet oil pipe (16). A second check valve (14) is installed between the motor pump output oil pipe (15) and the motor pump (81). One end of the return oil tee (11) is connected to the return oil port of the main pump (9), and the other end of the return oil tee (11) is connected to the bottom of the oil cylinder (2) through the suction pipe (13), and the last end of the return oil tee (11) is connected to the oil inlet of the motor pump (81) through the hose. The hydraulic control valve (10) is connected to the top of the cylinder (3) through the rodless chamber oil pipe (18), and the hydraulic control valve (10) is connected to the bottom of the cylinder (3) through the rod chamber oil pipe (17). The hydraulic control valve (10) is also connected to the oil cylinder (2) through the return oil pipe (19). The hydraulic control valve (10) is also provided with a control mechanism (101) for operation.

2. The dual-speed, dual-drive hydraulic log splitter according to claim 1, characterized in that, The surface of the wood-splitting platform (1) is provided with protruding ridges, and a left guardrail (5) is fixed on the left side of the wood-splitting platform (1), and a right guardrail (6) is provided on the right side of the wood-splitting platform (1). The bottom of the right guardrail (6) is hinged to the wood-splitting platform (1).

3. A dual-speed, dual-drive hydraulic log splitter according to claim 2, characterized in that, The main body of the cleaver (4) is slidably mounted on the oil cylinder (2), and a guide rail plate (41) is provided on one side of the tail end of the main body of the cleaver (4), and an iron chain hook (42) is provided on the other side of the tail end of the main body of the cleaver (4). A hanging chain (7) is fixed on the right guardrail (6), and the upper end of the hanging chain (7) is suspended on the iron chain hook (42).

4. A dual-speed, dual-drive hydraulic log splitter according to claim 1, characterized in that, The control mechanism (101) includes an intermediate shift fork plate (1011) rotatably connected to the valve core rod inside the hydraulic control valve (10). A rear shift fork plate (1014) is installed at the rear end of the intermediate shift fork plate (1011). An intermediate control rod (1022) is installed on the rear shift fork plate (1014). One end of the intermediate shift fork plate (1011) is connected to a right-hand control rod (1013) via a first adjusting screw (1012). The other end of the intermediate shift fork plate (1011) is connected to a transverse connecting plate (1016) via a second adjusting screw (1015). A longitudinal connecting plate (1017) is provided at the outer end of the transverse connecting plate (1016). A guide rail (1019) is connected to the top end of the longitudinal connecting plate (1017) via a spring. A left-hand control rod (1018) is installed at the lower end of the longitudinal connecting plate (1017).

5. A dual-speed, dual-drive hydraulic log splitter according to claim 4, characterized in that, The guide rail (1019) is provided with an upper limit switch (1021) and a lower limit switch (1020), and the upper end of the guide rail (1019) overlaps on the middle shift fork plate (1011).

6. A dual-speed, dual-drive hydraulic log splitter according to claim 4, characterized in that... Both the first adjusting screw (1012) and the second adjusting screw (1015) include a screw and a connector threaded to both ends of the screw. The two ends of the first adjusting screw (1012) are respectively hinged to the middle shift fork plate (1011) and the right control lever (1013), and the two ends of the second adjusting screw (1015) are respectively hinged to the middle shift fork plate (1011) and the cross plate (1016).

7. A dual-speed, dual-drive hydraulic log splitter according to claim 4, characterized in that, The longitudinal connecting plate (1017) has a serrated groove, and one end of the transverse connecting plate (1016) is installed in the serrated groove by bolts.

8. A dual-speed, dual-drive hydraulic log splitter according to claim 1, characterized in that, The top of the oil cylinder (2) is provided with an oil filling port (23), and a return oil filter (24) is provided below the oil filling port (23). The oil cylinder (2) is also provided with an oil level indicator (22), and the bottom of the oil cylinder (2) is provided with an oil drain plug (21).

9. A dual-speed, dual-drive hydraulic log splitter according to claim 1, characterized in that, The main pump (9) is provided with a main pump input shaft (91) at its outer end. The main pump input shaft (91) is connected to an external tractor and drives the main pump (9) to work through the tractor's rear output transmission shaft.

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