A crawler type self-propelled wood chipper

Abstract

The present invention relates to the field of agricultural machinery, and in particular to a crawler-type self-propelled wood chipper, including a crawler chassis, a feed hopper, a discharge port, a crushing device, an engine, an operating mechanism and an electronic control system; the engine is connected to the crawler chassis and the crushing device respectively through belts, the crawler chassis is fixedly connected to the crushing device and the operating mechanism respectively, and the feed hopper is rotatably connected to the crushing device; the engine is connected to a travel drive device through a belt, the travel drive device is fixedly installed on the front side of the frame, the driving wheel, the supporting roller, and the guide wheel are successively installed on the lower side of the frame from the front side to the rear side through a suspension, and the crawler is sleeved on the outside of the driving wheel, the supporting roller and the guide wheel. The wood chipper has a crawler chassis, can walk autonomously, and has an automatic overload protection device, which can effectively prevent the machine from being damaged due to overload and extend the service life of the machine. The travel drive device is placed in front, which reduces the installation height of the feed hopper and plays a role in saving work when loading.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a crawler-type self-propelled wood chipper. Background Art

[0002] Wood chipper is a special equipment for producing wood powder (sawdust). It can process logs, branches and other raw materials into wood powder at one time. It has the advantages of low investment, low energy consumption, high productivity, good economic benefits, easy use and maintenance. The wood powder produced can be widely used in industrial production such as papermaking, edible fungi, machine-made charcoal, particleboard, sawdust board, high-density board, medium-density fiberboard, etc. It can also cover the soil surface of plants to provide organic fertilizer for plants.

[0003] Most of the current wood chippers are suspended and tire trailer type. Since such wood chippers cannot move on their own, they need to be transported or towed by tractors. Before the crushing work, the crushed wood needs to be concentrated, which will increase the labor intensity of the workers and increase the preparatory time for the crushing work. Furthermore, the operator may mistakenly put in wood that exceeds the crushing capacity of the machine, which may easily cause the machine to overload, damage the machine, and reduce the service life of the machine. In addition, most of the existing wood chippers are rear-wheel drive, so the position of the feed hopper is also higher, and the labor intensity of workers loading materials is higher. Summary of the invention

[0004] In view of the inconvenience of moving wood chippers and the problem of overloading of wood chippers, the present invention provides a crawler-type self-propelled wood chipper. The wood chipper has its own crawler chassis, can move autonomously, and has an automatic overload protection device, which can effectively prevent damage caused by overloading of the machine and extend the service life of the machine.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A crawler-type self-propelled wood chipper, characterized in that it comprises a crawler chassis, a feed hopper, a discharge port, a crushing device, an engine, an operating mechanism and an electronic control system; the engine is connected to the crawler chassis and the crushing device respectively through belts, the crawler chassis is fixedly connected to the crushing device and the operating mechanism respectively, the feed hopper is rotatably connected to the crushing device, and the discharge port is connected to the crushing device through bolts; the crawler chassis comprises guide wheels, supporting wheels, driving wheels, a frame, a travel drive device and crawlers; the engine is connected to the travel drive device through a belt, the travel drive device is fixedly mounted on the front side of the frame, the driving wheel, the supporting wheels and the guide wheels are sequentially mounted on the lower side of the frame from the front side to the rear side through a suspension, and the crawler track is sleeved on the outer sides of the driving wheel, the supporting wheels and the guide wheels ; The crushing device includes a feeding mechanism, a crushing mechanism and a chip removal mechanism, the crushing mechanism is connected to the engine through a belt, the chip removal mechanism is connected to the crushing mechanism through a belt, and the feeding mechanism is connected to the crushing mechanism through a belt; the crushing mechanism includes a flywheel pulley, a flywheel assembly, a blade, and a detection disk, the flywheel pulley is connected to the flywheel assembly through a flat key, the blade is fixedly mounted on the flywheel assembly, and the detection disk is fixedly mounted on the outer side of the flywheel pulley; the electronic control system includes a controller, a sensor and a switch, and the switch is connected to the controller through an electrical wiring harness; the sensor is installed on one side of the detection disk, and the sensor detects that the rotation speed of the detection disk is lower than the set range, and the feeding mechanism is suspended through the controller. After the rotation speed of the detection disk returns to the set range, the feeding mechanism is resumed through the controller.

[0007] Preferably, the travel drive device includes a reducer output half shaft, a reducer input pulley, and a reducer; the engine is connected to the reducer input pulley through a belt, and the reducer output half shaft is connected to the drive wheel through a pin, a flat key or a spline.

[0008] Preferably, the reducer is provided with two reducer output half shafts which can switch between synchronous rotation and independent rotation.

[0009] Preferably, the discharge port includes an upper discharge port and a lower discharge port; the upper discharge port is connected to the crushing device by bolts; a lower discharge port baffle is arranged on the outer side of the lower discharge port, and a detachable discharge port fence is arranged at the lower discharge port.

[0010] Preferably, the discharge port fence includes a fence body and a V-shaped bending plate fixed at the end of the fence body, and the installation position of the discharge port fence on the outer shell of the crushing device includes an upper installation position and a lower installation position; when the discharge port fence is installed at the lower installation position, the lower discharge port baffle is opened, and the bending plate blocks the bottom of the upper discharge port; when the discharge port fence is installed at the upper installation position, the lower discharge port baffle is closed.

[0011] Preferably, the upper discharge port includes an upper discharge port fixing portion fixedly mounted on the top of the pulverizing device and connected to the inner cavity thereof, and an upper discharge port rotating portion rotatably connected to the upper side of the upper discharge port fixing portion and connected thereto.

[0012] Preferably, a fixed part connecting plate is fixedly provided at the upper end of the upper discharge port fixed part, and a rotating part connecting plate is fixedly provided at the lower end of the upper discharge port rotating part, and a receiving groove with a diameter larger than that of the fixed part connecting plate is opened on the lower side of the rotating part connecting plate, and an annular groove is formed between the outer edge of the fixed part connecting plate and the inner wall of the receiving groove, and a plurality of anti-loosening bolts for clamping the fixed part connecting plate and the rotating part connecting plate are arranged in the annular groove, and a quick-change bolt is also arranged in the annular groove.

[0013] Preferably, the feeding mechanism includes a hydraulic system, a power unit pulley and a feeding roller; the hydraulic system includes a power unit, a motor, a hydraulic pipe and a solenoid valve, the power unit pulley is connected to the power unit through a hexagon socket bolt, the power unit pulley is connected to the crushing mechanism through a belt, the power unit is connected to the motor through the hydraulic pipe, and the hydraulic pipe is provided with a solenoid valve; the motor is connected to the feeding roller through a key.

[0014] Preferably, a machine cover is provided on one side of the power unit pulley, and a wrench hole corresponding to the power unit pulley is opened on the machine cover.

[0015] The beneficial effects of the present invention are:

[0016] 1. A walking device is set at the bottom of the wood chipper, which can be driven by the engine to move the wood chipper by itself. It can be moved to another site without the need for tractor transportation or traction, thus reducing the labor intensity of workers and the preparation time for the initial crushing work.

[0017] 2. When the engine is overloaded, the flywheel speed decreases. At this time, the feeding mechanism can automatically stop feeding and increase the cutting power to digest the material that has been fed in. The flywheel speed rises to the set range and then resumes feeding. This can prevent machine damage caused by engine overload and extend the service life of the wood chipper.

[0018] 3. The travel drive device is placed in front, which lowers the installation position of the engine, and then reduces the installation height of the feed hopper, which saves work when feeding and reduces the workload of the feeder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the general assembly structure of the present invention;

[0021] Figure 2 This is the assembly diagram of the crushing device and the upper discharge port;

[0022] Figure 3 It is a schematic diagram of the structure of the crushing device;

[0023] Figure 4 It is a schematic diagram of the feeding mechanism structure;

[0024] Figure 5 It is a schematic diagram of the crawler chassis structure;

[0025] Figure 6 It is a schematic diagram of the structure of the travel drive device;

[0026] Figure 7 It is a schematic diagram of the crushing mechanism structure;

[0027] Figure 8 Schematic diagram of sensor location;

[0028] Fig. 9 This is a schematic diagram of the assembly structure of the installation position on the discharge port fence;

[0029] Fig.10 This is a schematic diagram of the assembly structure of the installation position under the discharge port fence;

[0030] Fig.11 This is a schematic diagram of the structure of the upper discharge port when viewed from above;

[0031] Fig.12 It is a schematic diagram of the structure of the upper discharge port viewed from above.

[0032] In the figure: 1 feed hopper, 2 operating mechanism, 3 engine, 4 crawler chassis, 5 machine cover, 6 crushing device, 7 lower discharge port baffle, 8 discharge port fence, 81 fence body, 82 bending plate, 9 upper discharge port, 91 upper discharge port fixed part, 92 upper discharge port rotating part, 93 fixed part connecting plate, 94 rotating part connecting plate, 95 accommodating groove, 96 anti-loosening bolt, 97 quick-change bolt, 10 crushing mechanism, 11 feeding mechanism, 12 chip removal mechanism, 13 power unit pulley, 14 feeding roller, 15 power unit, 16 motor, 17 hydraulic pipe, 18 solenoid valve, 19 guide wheel, 20 heavy wheel, 21 driving wheel, 22 frame, 23 walking drive device, 24 crawler, 25 reducer output half shaft, 26 reducer input pulley, 27 reducer, 28 blade, 29 detection disk, 30 flywheel pulley, 31 flywheel assembly, 32 sensor. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Reference Figure 1 A crawler type self-propelled wood chipper comprises a crawler chassis 4, a machine cover 5, a feed hopper 1, a material outlet, a crushing device 6, an engine 3, an operating mechanism 2 and an electronic control system; the engine 3 is connected to the crawler chassis 4 and the crushing device 6 respectively through belts; the crawler chassis 4 is fixedly connected to the crushing device 6 and the operating mechanism 2 respectively; the feed hopper 1 is connected to the crushing device 6 through a rotating shaft, and the feed hopper 1 can rotate around the rotating shaft relative to the crushing device 6.

[0035] Reference Figure 5-6 The crawler chassis 4 includes a guide wheel 19, a supporting roller 20, a driving wheel 21, a frame 22, a travel drive device 23, and a crawler track 24; the engine 3 is connected to the travel drive device 23 through a belt, and the guide wheel 19, the supporting roller 20, and the driving wheel 21 are suspended and installed on the lower side of the frame 22, respectively, from the front side to the rear side, the driving wheel 21, the supporting roller 20, and the guide wheel 19, and the crawler track 24 is sleeved on the outside of the driving wheel 21, the supporting roller 20, and the guide wheel 19;

[0036] The travel drive device 23 includes a reducer output half shaft 25, a reducer input pulley 26, and a reducer 27; the engine 3 is connected to the reducer input pulley 26 through a belt, and the reducer drive half shaft 25 is preferably connected to the drive wheel 21 through a pin, and the reducer output half shaft 25 can also be connected to the drive wheel 21 through a flat key or a spline according to actual needs. The power of the engine 3 is transmitted to the reducer 27 through a belt, and then transmitted to the drive wheel 21 through the reducer output half shaft 25 after deceleration. The drive wheel 21 at the front of the wood chipper drives the crawler 24 to rotate, and the wood chipper is self-propelled; the reducer 27 is provided with two reducer output half shafts 25, and the two reducer output half shafts 25 can drive the wood chipper to travel by synchronous rotation, and the two reducer output half shafts 25 can also be switched to rotate separately, thereby realizing the turning function of the wood chipper.

[0037] The common crawler chassis 4 and the travel drive device 23 are located at the rear of the wood chipper. In this embodiment, the travel drive device 23 is placed in front and fixedly mounted on the front side of the frame 22. In this way, the installation position of the rear engine 3 can be lowered, and then the installation height of the feed hopper 1 can be lowered, which saves work when loading and reduces the workload of the feeder.

[0038] Reference Figure 1-2 The discharge port includes an upper discharge port 9 and a lower discharge port; the upper discharge port 9 is connected to the crushing device 6 by bolts; the lower discharge port is provided with a lower discharge port baffle 7, and the lower discharge port baffle 7 is connected to the crushing device 6 by a rotating shaft. When the lower discharge port baffle 7 is closed, the crushed wood chips are discharged from the upper discharge port 9; a discharge port fence 8 connected to the crushing device 6 by a quick-change bolt is provided at the lower discharge port.

[0039] Reference Figure 3 The crushing device 6 includes a feeding mechanism 11, a crushing mechanism 10 and a chip removal mechanism 12. The crushing mechanism 10 is connected to the engine 3 through a belt, the chip removal mechanism 12 is connected to the crushing mechanism 10 through a belt, and the feeding mechanism 11 is connected to the crushing mechanism 10 through a belt.

[0040] Reference Figure 4 The feeding mechanism 11 includes a hydraulic system, a power unit pulley 13 and a feeding roller 14; the hydraulic system includes a power unit 15, a motor 16, a hydraulic pipe 17 and a solenoid valve 18, the power unit pulley 13 is connected to the power unit 15 through a hexagon socket bolt, the power unit pulley 13 is connected to the crushing mechanism 10 through a belt, the power unit 15 is connected to the motor 16 through a hydraulic pipe 17, and the hydraulic pipe 17 is provided with a solenoid valve 18; the motor 16 is connected to the feeding roller 14 through a key;

[0041] A machine cover 5 fixed on the outer shell of the external crushing device 6 is provided on one side of the power unit pulley 13, and a spanner hole is opened on the machine cover 5. Without removing the machine cover 5, an Allen wrench can be inserted through the spanner hole to manually reverse the power unit pulley 13, drive the motor 16 to reverse, realize manual discharging, and solve the problem of material blockage.

[0042] Reference Figure 7 The crushing mechanism 10 includes a flywheel pulley 30, a flywheel assembly 31, a blade 28, and a detection disc 29. The flywheel pulley 30 is connected to the flywheel assembly 31 through a flat key to transmit power. The blade 28 is installed on the flywheel assembly 31 through bolts, and the detection disc 29 is installed on the outside of the flywheel pulley 30 through bolts.

[0043] Reference Figure 9-10 The discharge port fence 8 includes a fence body 81 and a V-shaped bent plate 82 fixed to the end of the fence body 81. On the housing of the crushing device 6, the discharge port fence 8 has two upper and lower installation positions, namely an upper installation position and a lower installation position;

[0044] Reference Fig. 9 When the discharge port fence 8 is installed in the lower installation position, the lower discharge port baffle 7 is opened, and the bending plate 82 blocks the bottom of the upper discharge port 9, separating the upper discharge port 9 from the chip discharge mechanism 12, and the crushed wood chips are discharged from the lower discharge port;

[0045] Reference Fig.10 When the discharge port fence 8 is installed in the upper mounting position, the lower discharge port baffle 7 is closed, the bending plate 82 is located outside the wood chipper, there is no obstruction between the upper discharge port 9 and the chip discharge mechanism 12, and the crushed wood chips are discharged from the upper discharge port 9.

[0046] Reference Figure 11-12 The upper discharge port 9 includes an upper discharge port fixing portion 91 fixedly mounted on the top of the pulverizing device 6 and connected to the inner cavity thereof, and an upper discharge port rotating portion 92 rotatably connected to the upper side of the upper discharge port fixing portion 91 and connected thereto;

[0047] Specifically, a fixed part connecting disk 93 is fixedly provided at the upper end of the upper discharge port fixed part 91, and a rotating part connecting disk 94 is fixedly provided at the lower end of the upper discharge port rotating part 92. A receiving groove 95 with a diameter larger than that of the fixed part connecting disk 93 is opened on the lower side of the rotating part connecting disk 94. An annular groove is formed between the outer edge of the fixed part connecting disk 93 and the inner wall of the receiving groove 95. A plurality of anti-loosening bolts 96 for clamping the fixed part connecting disk 93 and the rotating part connecting disk 94 are arranged in the annular groove. The rotating part connecting disk 94 can rotate 360° relative to the fixed part connecting disk 93, so that the upper discharge direction can be adjusted according to the actual working environment. A quick-change bolt 97 is also arranged in the annular groove. After the adjustment is completed, the quick-change bolt 97 is tightened to fix the relative position of the upper discharge port rotating part 92 and the upper discharge port fixed part 91.

[0048] The electric control system includes a controller, a sensor 32 and a switch, wherein the built-in program of the controller is written as needed, and the switches include an emergency stop switch, a main power switch, and a feed roller switch, and the switch and the controller are connected through an electrical harness; the detection disk 29 rotates with the flywheel, and the sensor 32 is installed on one side of the detection disk 29 of the crushing mechanism 10. When working, the sensor 32 detects the rotation speed of the detection disk 29, that is, the flywheel rotation speed, and feeds back the signal to the controller. After receiving the signal, the controller converts it into the engine speed, compares it with the set engine speed range, and determines whether the engine 3 is overloaded. If it is overloaded, the controller sends a signal to control the solenoid valve 18 to cut off the feed mechanism 11 The oil circuit stops supplying oil to the motor 16, forcing the feed roller 14 to stop feeding. At this time, the flywheel is still rotating and cutting to crush the material that has been fed in. At this time, because the feed roller 14 stops, the load of the engine 3 decreases and the speed increases, the cutting power of the crushing mechanism 10 is improved, and the cutting force on the fed material is increased to accelerate the digestion of the fed material. When the speed of the engine 3 rises to the set range, the controller sends a signal to control the solenoid valve to restore the oil circuit of the feed mechanism 11, and continue to supply oil to the motor 16, and the feed roller 14 resumes the feeding action. If the material fed in before stopping feeding is still not crushed, continuing to feed will cause the load of the engine 3 to increase and the speed to decrease. When the speed of the engine 3 is lower than the set speed range, the controller sends a signal again to control the solenoid valve 18 to cut off the oil circuit of the feed mechanism 11. If this phenomenon occurs repeatedly, it is necessary to press the emergency stop switch to stop the machine to avoid overloading the engine 3, thereby achieving the purpose of protecting the engine 3.

[0049] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A crawler-type self-propelled wood chipper, characterized in that: It comprises a crawler chassis (4), a feed hopper (1), a discharge port, a crushing device (6), an engine (3), an operating mechanism (2) and an electronic control system; The engine (3) is connected to the crawler chassis (4) and the crushing device (6) respectively through belts, the crawler chassis (4) is fixedly connected to the crushing device (6) and the operating mechanism (2) respectively, and the feed hopper (1) is rotatably connected to the crushing device (6); The crawler chassis (4) comprises a guide wheel (19), a supporting roller (20), a driving wheel (21), a frame (22), a travel drive device (23), and a crawler track (24); the engine (3) is connected to the travel drive device (23) via a belt, the travel drive device (23) is fixedly mounted on the front side of the frame (22), the driving wheel (21), the supporting roller (20), and the guiding wheel (19) are sequentially mounted on the lower side of the frame (22) from the front side to the rear side via a suspension, and the crawler track (24) is sleeved on the outer sides of the driving wheel (21), the supporting roller (20), and the guiding wheel (19); The pulverizing device (6) comprises a feeding mechanism (11), a pulverizing mechanism (10) and a chip removal mechanism (12); the pulverizing mechanism (10) is connected to the engine (3) via a belt, the chip removal mechanism (12) is connected to the pulverizing mechanism (10) via a belt, and the feeding mechanism (11) is connected to the pulverizing mechanism (10) via a belt; The pulverizing mechanism (10) comprises a flywheel pulley (30), a flywheel assembly (31), a blade (28), and a detection disc (29); the flywheel pulley (30) is connected to the flywheel assembly (31) via a flat key, the blade (28) is fixedly mounted on the flywheel assembly (31), and the detection disc (29) is fixedly mounted on the outside of the flywheel pulley (30); The electric control system comprises a controller, a sensor (32) and a switch, wherein the switch is connected to the controller via an electrical harness; the sensor (32) is installed on one side of the detection disk (29); when the sensor (32) detects that the rotation speed of the detection disk (29) is lower than a set range, the controller suspends the operation of the feeding mechanism (11); and when the rotation speed of the detection disk (29) returns to the set range, the controller resumes the operation of the feeding mechanism (11); The discharge port comprises an upper discharge port (9) and a lower discharge port; the upper discharge port (9) is connected to the pulverizing device (6) by bolts; a lower discharge port baffle (7) is arranged outside the lower discharge port, and a detachable discharge port fence (8) is arranged at the lower discharge port; The discharge port fence (8) comprises a fence body (81) and a V-shaped bent plate (82) fixed to the end of the fence body (81); the installation position of the discharge port fence (8) on the housing of the pulverizing device (6) comprises an upper installation position and a lower installation position; When the discharge port fence (8) is installed in the lower installation position, the lower discharge port baffle (7) is opened, and the bending plate (82) blocks the bottom of the upper discharge port (9); When the discharge port fence (8) is installed in the upper installation position, the lower discharge port baffle (7) is closed; The upper discharge port (9) comprises an upper discharge port fixing portion (91) fixedly mounted on the top of the pulverizing device (6) and connected to the inner cavity thereof, and an upper discharge port rotating portion (92) rotatably connected to the upper side of the upper discharge port fixing portion (91) and connected thereto; A fixed part connecting plate (93) is fixedly provided at the upper end of the upper discharge port fixed part (91), and a rotating part connecting plate (94) is fixedly provided at the lower end of the upper discharge port rotating part (92). A receiving groove (95) having a diameter larger than that of the fixed part connecting plate (93) is provided on the lower side of the rotating part connecting plate (94). An annular groove is formed between the outer edge of the fixed part connecting plate (93) and the inner wall of the receiving groove (95). A plurality of anti-loosening bolts (96) for clamping the fixed part connecting plate (93) and the rotating part connecting plate (94) are provided in the annular groove. A quick-change bolt (97) is also provided in the annular groove.

2. A crawler-type self-propelled wood chipper as claimed in claim 1, characterized in that: The travel drive device (23) comprises a reducer output half shaft (25), a reducer input pulley (26), and a reducer (27); the engine (3) is connected to the reducer input pulley (26) via a belt, and the reducer output half shaft (25) is connected to the drive wheel (21) via a pin, a flat key or a spline.

3. A crawler-type self-propelled wood chipper as claimed in claim 2, characterized in that: The reducer (27) is provided with two reducer output half shafts (25) which can switch between synchronous rotation and independent rotation.

4. A crawler-type self-propelled wood chipper as claimed in claim 1, characterized in that: The feeding mechanism (11) comprises a hydraulic system, a power unit pulley (13) and a feeding roller (14); the hydraulic system comprises a power unit (15), a motor (16), a hydraulic pipe (17) and a solenoid valve (18); the power unit pulley (13) is connected to the power unit (15) via a hexagon socket bolt; the power unit pulley (13) is connected to the crushing mechanism (10) via a belt; the power unit (15) is connected to the motor (16) via the hydraulic pipe (17); the hydraulic pipe (17) is provided with a solenoid valve (18); the motor (16) is connected to the feeding roller (14) via a key.

5. A crawler-type self-propelled wood chipper as claimed in claim 4, characterized in that: A machine cover (5) is provided on one side of the power unit pulley (13), and a spanner hole corresponding to the power unit pulley (13) is opened on the machine cover (5).

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