A traction type alfalfa baler with a self - contained microwave drying function

Abstract

The invention discloses a towed alfalfa baler with a built-in microwave drying function, which comprises a baling assembly. The baling assembly includes a fixed housing and a movable housing. The fixed housing is provided with a feed inlet. A conveyor belt is arranged between the reel teeth and the feed inlet. A plurality of polyoxymethylene rollers are rotatably connected in the fixed housing and the movable housing. The polyoxymethylene rollers are drivingly connected with a main shaft. A binding rope net mechanism is installed on the fixed housing; The microwave assembly is located inside the polyoxymethylene roller. The microwave assembly includes a magnetron and a magnetron chassis. The magnetron chassis is provided with a terminal block, and cooling fins are fixedly installed on the magnetron chassis; The bale unloading assembly includes a bale unloading smooth roller, and the bale unloading smooth roller is rotatably connected with a side plate I. This device can realize baling and drying at the same time, reduce the natural drying time of alfalfa, better preserve the nutrients in alfalfa, and effectively improve the quality of alfalfa hay.

Description

Technical Field

[0001] The present invention relates to the field of balers, and particularly to a traction type alfalfa baler with a built-in microwave drying function. Background Art

[0002] With the development of the livestock industry, the demand for high-quality grass products has been increasing year by year. As a harvesting machine, the traction type alfalfa microwave drying round baler can realize the drying, collection and baling of alfalfa, which is convenient for subsequent storage, transportation of grass products, and promotes the development of the livestock industry.

[0003] High-quality alfalfa hay is an important feed source for dairy farms. At present, almost all alfalfa hay above grade two depends on imports. Improving the quality of alfalfa hay modulation has become an urgent problem to be solved in the alfalfa industry. Generally, the freshly harvested alfalfa is sun-dried in place for 4 - 5 hours to rapidly evaporate the moisture in the fresh grass. When the moisture content of the alfalfa drops to about 40%, a rake is used to form windrows, and further drying is carried out until the safe moisture content is reached for baling. Since the time from mowing to baling of alfalfa is long, not only a large amount of carotene will be lost due to long-term sunlight exposure, but also the drying of stems and leaves is not synchronous, and the leaf loss is relatively high during the raking and baling operations. Once it is exposed to rain, more nutrient loss will occur. Therefore, realizing high-moisture baling of alfalfa is an important means to reduce nutrient loss during alfalfa harvesting and improve the quality of alfalfa.

[0004] When the moisture content of alfalfa is sun-dried to about 40%, the round baler picks up and bales it, and at the same time, microwave heating is carried out in the bale chamber, so that the high-moisture alfalfa in the bale chamber continuously absorbs heat, gradually removes the moisture in the alfalfa and forms a round bale, retaining more nutrients of the alfalfa. Summary of the Invention

[0005] The purpose of the present invention is to provide a traction type alfalfa baler with a built-in microwave drying function to solve the problems existing in the above-mentioned prior art, realize high-moisture baling of alfalfa hay, reduce nutrient loss during alfalfa harvesting, and improve the quality of alfalfa.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a traction type alfalfa baler with a built-in microwave drying function, including:

[0007] A baling assembly, the baling assembly includes a fixed housing and a movable housing rotatably connected to the fixed housing. The fixed housing is provided with a feed inlet, a conveyor belt is arranged at the feed inlet, a pick-up is arranged at one end of the conveyor belt away from the feed inlet. A plurality of acetal drums are rotatably connected in the fixed housing and the movable housing. The acetal drums are drivingly connected to a main shaft. A tying mechanism is installed on the fixed housing, and the tying mechanism is located on top of the acetal drums;

[0008] A microwave component, the microwave component is located inside the polyoxymethylene roller, the microwave component is rotationally connected to the polyoxymethylene roller, the microwave component includes a magnetron chassis, and the magnetron chassis is provided with a terminal and a magnetron;

[0009] A bale unloading component, the bale unloading component includes a plurality of bale unloading light rollers, the plurality of bale unloading light rollers are arranged in a straight line and rotationally connected between two I side plates, and the two I side plates are rotationally connected to the fixed housing.

[0010] Preferably, a plurality of the polyoxymethylene rollers are circumferentially arranged inside the fixed housing and the movable housing. First sprockets are respectively fixedly connected to the polyoxymethylene roller and the driving shaft, a chain is sleeved on the first sprockets, and the polyoxymethylene roller and the driving shaft are driven by the chain.

[0011] Preferably, the conveyor belt extends into the feeding port. A plurality of fixed protrusions are circumferentially and fixedly connected to the outer edge of the polyoxymethylene roller. A ceramic bearing is fixedly connected to the inner side wall of the polyoxymethylene roller. The inner ring of the ceramic bearing is fixedly connected to the magnetron chassis. The magnetron is fixedly connected with a metal waveguide. One end of the magnetron extends into the metal waveguide, and cooling fins are fixedly installed on the magnetron chassis.

[0012] Preferably, the ceramic bearing is fixedly connected to the outer ring of the ceramic bearing through a I plastic fixing rod, and the inner ring of the ceramic bearing is fixedly connected to the magnetron chassis through a II plastic fixing rod.

[0013] Preferably, a I fan is fixedly connected to the fixed housing. A II fan is fixedly connected to the inner ring of the ceramic bearing. The II fan is located at one end of the metal waveguide away from the magnetron. A III fan is fixedly installed on the magnetron chassis. The magnetron chassis is fixedly connected with a thermostat. The thermostat is electrically connected to the terminal and the magnetron respectively. The I fan, the II fan and the III fan are respectively electrically connected to a power supply.

[0014] Preferably, a first hydraulic cylinder is hinged to the fixed housing, and the output end of the first hydraulic cylinder is hinged to the movable housing.

[0015] Preferably, the picker includes reel teeth, the reel teeth are fixedly connected to a reel, the reel is rotationally connected between two II side plates, a second sprocket is fixedly connected to the reel, the reel and the polyoxymethylene roller are driven by the chain, and a tooth guard plate is installed between two adjacent reel teeth.

[0016] Preferably, a fixed roller and a plurality of auxiliary rollers are rotatably connected between the two side plates II. The conveyor belt is sleeved outside the fixed roller and the plurality of auxiliary rollers. The first sprocket is fixedly connected to the fixed roller, and the fixed roller and the driving shaft are driven by the chain.

[0017] Preferably, through holes are provided on the side plate I and the fixed housing, and a rotating shaft is inserted through the through holes. The side plate I and the fixed housing are rotatably connected through the rotating shaft.

[0018] Preferably, a connecting rod is fixedly connected to the fixed housing, and a traveling wheel is rotatably connected to the fixed housing.

[0019] The present invention discloses the following technical effects: The picker of this device picks up the cut alfalfa, sends the alfalfa to the conveyor belt, and then sends it to between a plurality of polyoxymethylene rollers through the feed port. The plurality of polyoxymethylene rollers rotate continuously, and the fed alfalfa also rotates, gradually forming a round bale. As the alfalfa is continuously fed, the alfalfa round bale becomes larger and larger. During the process of forming the alfalfa round bale, the terminal is electrically connected to the power supply, and the magnetron will generate microwaves. The microwaves pass through the rollers of the polyoxymethylene roller to heat the alfalfa, thereby promoting the continuous evaporation of the moisture in the alfalfa and further drying it. When the alfalfa forms a round bale and reaches a certain volume, the bale tying mechanism releases the bale net and winds it around the outer surface of the formed alfalfa round bale to complete the baling of the alfalfa. After the alfalfa baling is completed, the movable housing will open, and the baled alfalfa will roll onto the unloading bale roller and fall to the ground waiting to be collected. This device can realize baling and drying at the same time, reduce the natural drying time of alfalfa, better preserve the nutrients in alfalfa, and effectively improve the quality of alfalfa hay. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a traction type alfalfa baling machine with a built-in microwave drying function of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the fan I of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the polyoxymethylene roller of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the picker of the present invention;

[0025] Figure 5 Schematic structural diagram of the microwave component of the present invention;

[0026] Figure 6 Schematic structural diagram of the bundling mechanism of the present invention;

[0027] Wherein, 1, reel teeth; 2, reel; 3, conveyor belt; 4, fixed roller; 5, polyoxymethylene roller; 501, first polyoxymethylene roller; 502, second polyoxymethylene roller; 503, third polyoxymethylene roller; 504, fourth polyoxymethylene roller; 6, walking wheel; 7, driving shaft; 8, bale unloading smooth roller; 9, connecting rod; 10, first sprocket; 11, bundling mechanism; 12, fixed housing; 13, first hydraulic cylinder; 14, feeding port; 15, movable housing; 16, side plate I; 17, fan I; 18, thermostat; 19, cooling fins; 20, magnetron; 21, fan II; 22, metal waveguide; 23, terminal; 24, plastic fixing rod I; 25, plastic fixing rod II; 26, ceramic bearing; 27, auxiliary roller; 28, fan III; 29, fixing projection; 30, rotating shaft; 31, magnetron chassis; 32, tooth guard; 33, side plate II; 34, second sprocket, 35, rope box mounting bracket; 36, rope box; 37, bundling rope; 38, rope feeding pipe; 39, motor mounting plate; 40, rope feeding motor; 41, rubber roller; 42, second hydraulic cylinder; 43, cutter bracket; 44, cutter motor; 45, cutter. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Referring to Figure 1-6 , the present invention provides a traction type alfalfa baler with a built-in microwave drying function, including a pick-up, and the pick-up includes reel teeth 1; the reel teeth 1 are used to pick up the cut alfalfa.

[0031] Baling assembly, the baling assembly includes a fixed housing 12 and a movable housing 15 rotatably connected to the fixed housing 12. The fixed housing 12 is provided with a feed inlet 14, and a conveyor belt 3 is arranged at the feed inlet 14. A pick-up is arranged at one end of the conveyor belt 3 away from the feed inlet 14. A number of acetal drums 5 are rotatably connected in the fixed housing 12 and the movable housing 15. The acetal drums 5 are drivingly connected to a main shaft 7. A bundling mechanism 11 is installed on the fixed housing 12, and the bundling mechanism 11 is located at the top of the acetal drums 5.

[0032] In this embodiment, hinge holes are respectively formed in the fixed housing 12 and the movable housing 15. Both ends of one acetal drum 5 near the top respectively pass through the hinge holes. A number of acetal drums 5 are drivingly connected to each other. The number of acetal drums 5 includes a first acetal drum 501, a second acetal drum 502, and a third acetal drum 503. The main shaft 7 is drivingly connected to the first acetal drum 501. The second acetal drum 502 is drivingly connected to the third acetal drum 503. The third acetal drum 503 drives other acetal drums 5 on the movable housing 15 to rotate, so that the main shaft 7 drives all the acetal drums 5 to rotate. After the pick-up picks up the alfalfa, it sends the alfalfa onto the conveyor belt 3. The conveyor belt 3 sends the alfalfa through the feed inlet 14 between a number of acetal drums 5. The acetal drums 5 keep rotating, and the fed alfalfa also rotates along with it, gradually forming a round bale of hay. As the alfalfa is continuously fed, the round bale of alfalfa hay keeps getting larger. When the diameter of the round bale of alfalfa hay reaches the set value of the control arm, the bundling mechanism 11 releases the bundling rope, and the bundling rope passes through between two acetal drums 5 and winds around the outer surface of the already formed round bale of alfalfa hay, completing the baling of the alfalfa.

[0033] In this embodiment, the bundling rope mechanism 11 includes a rope box mounting frame 35. Both ends of the rope box mounting frame 35 are mounted on the side walls of the fixed housing 12. A rope box 36 is fixedly connected to the rope box mounting frame 35. A bundling rope 37 is placed inside the rope box 36. A rope feeding pipe 38 is hinged to the rope box 36. The bundling rope 37 is threaded through the rope feeding pipe 38. A notch is formed on the rope feeding pipe 38. A motor mounting plate 39 is fixedly connected at the notch. A rope feeding motor 40 is mounted on the motor mounting plate 39. The output end of the rope feeding motor 40 is fixedly connected with a rubber roller 41. The rubber roller 41 is in frictional connection with the bundling rope 37. The rubber roller 41 presses the bundling rope 37 against the motor mounting plate 39. When the rope feeding motor 40 is started, the rubber roller 41 rotates and drives the bundling rope 37 to move through friction. A second hydraulic cylinder 42 is hinged to the rope box mounting frame 35. The output end of the second hydraulic cylinder 42 is hinged to the rope feeding pipe 38. A cutting knife support 43 is mounted at the bottom of the rope box mounting frame 35. Both ends of the cutting knife support 43 are mounted on the side walls of the fixed housing 12. A cutting knife motor 44 is fixedly connected to the cutting knife support 43. The output end of the cutting knife motor 44 is fixedly connected with a cutting knife 45. When the alfalfa bundling is completed, the rope feeding motor 40 is started. The bundling rope 37 passes through between the two acetal rollers 5 and contacts the alfalfa. Under the action of friction, the alfalfa drives the bundling rope to rotate, so that the bundling rope starts to wind around the alfalfa. When the second hydraulic cylinder 42 completes the specified number of telescopic times, the bundling rope 37 also completes the specified number of winding turns on the surface of the alfalfa. The second hydraulic cylinder 42 drives the rope feeding pipe 38 to move to the position of the cutting knife 45. At this time, the cutting knife motor 44 is started to drive the cutting knife 45 to rotate and cut off the bundling rope 37, completing the bundling of the alfalfa.

[0034] A microwave component is located inside the acetal roller 5 and is rotationally connected to the acetal roller 5. The microwave component includes a magnetron chassis 31, and the magnetron chassis 31 is provided with a terminal 23 and a magnetron 20. One microwave component is installed inside the acetal roller 5. The terminal 23 is electrically connected to a power source. The magnetron 20 generates microwaves. The microwaves pass through the acetal roller and heat the alfalfa, thereby promoting the continuous evaporation of moisture from the alfalfa and further drying it. In this embodiment, the movable housing 15 is provided with a plurality of hollow holes for discharging the water vapor generated when drying the alfalfa. The magnetron 20 is a prior art and will not be elaborated here.

[0035] Bale unloading assembly. The bale unloading assembly includes a bale unloading smooth roller 8. A number of bale unloading smooth rollers 8 are arranged in a straight line and rotatably connected between two side plates I 16. The two side plates I 16 are rotatably connected to the fixed housing 12. After the alfalfa baling is completed, the movable housing 15 will open. In actual application, this device is usually in an inclined state. After the movable housing 5 opens, the baled alfalfa will roll outwards due to gravity and thus roll onto the bale unloading smooth roller 8. The bale unloading smooth roller 8 is rotatably connected to the side plates I 16. Without a power source, when the baled alfalfa rolls onto the bale unloading smooth roller 8, the bale unloading smooth roller 8 will automatically rotate, which is beneficial for the baled alfalfa to fall and land on the ground waiting to be collected. The bale unloading smooth roller 8 is rotatably connected between the two side plates I 16.

[0036] In a further optimized solution, a number of polyoxymethylene rollers 5 are arranged circumferentially in the fixed housing 12 and the movable housing 15. First sprockets 10 are fixedly connected to the polyoxymethylene rollers 5 and the drive shaft 7 respectively. Chains are sleeved on the first sprockets 10. The polyoxymethylene rollers 5 and the drive shaft 7 are driven by the chains. The a number of polyoxymethylene rollers 5 are also driven by the chains among them. The a number of polyoxymethylene rollers 5 are arranged circumferentially in the fixed housing 12 and the movable housing 15 to form a space for alfalfa shaping.

[0037] In a further optimized solution, the conveyor belt 3 extends into the feed inlet 14. A number of fixed protrusions 29 are fixedly connected circumferentially to the outer edge of the polyoxymethylene roller 5. A ceramic bearing 26 is fixedly connected to the inner side wall of the polyoxymethylene roller 5. The inner ring of the ceramic bearing 26 is fixedly connected to the magnetron chassis 31. The magnetron 20 is fixedly connected to a metal waveguide 22. One end of the magnetron 20 extends into the metal waveguide 22. Cooling fins 19 are fixedly installed on the magnetron chassis 31. The conveyor belt 3 extending into the feed inlet 14 can directly feed the alfalfa between the a number of polyoxymethylene rollers 5. The fixed protrusions 29 increase the friction between the polyoxymethylene roller 5 and the alfalfa, making the alfalfa roll faster and further improving the baling efficiency of the baler. In this embodiment, the drying device is located at the middle position inside the polyoxymethylene roller 5. The drying device is rotatably connected to the polyoxymethylene roller 5 through the ceramic bearing 26. Due to its own gravity, the drying device can not rotate with the polyoxymethylene roller 5 inside the polyoxymethylene roller 5. The microwave generated by the magnetron 20 is collected by the metal waveguide 22, passes through the ceramic bearing 26, passes through the side wall of the polyoxymethylene roller 5, and finally reaches the alfalfa to heat the alfalfa. The moisture in the alfalfa absorbs the microwave and generates heat, thus becoming drier. The cooling fins 19 are used to dissipate heat from the magnetron chassis 31 and the magnetron 20, accelerating the heat dissipation speed of the magnetron chassis 31 and the magnetron 20.

[0038] For a further optimized solution, the polyoxymethylene roller 5 is fixedly connected to the outer ring of the ceramic bearing 26 through the I plastic fixing rod 24, and the inner ring of the ceramic bearing 26 is fixedly connected to the magnetron chassis 31 through the II plastic fixing rod 25. In this embodiment, the I plastic fixing rod 24 and the II plastic fixing rod 25 each consist of three branches, making it more convenient to install the polyoxymethylene roller 5 and the outer ring of the ceramic bearing 26. The magnetron chassis 31 is installed on the II plastic fixing rod 25, which helps the drying device to remain stationary.

[0039] For a further optimized solution, an I fan 17 is fixedly connected to the fixed housing 12, and a II fan 21 is fixedly connected to the inner ring of the ceramic bearing 26. The II fan 21 is located at the end of the metal waveguide 22 away from the magnetron 20. A III fan 28 is fixedly installed on the magnetron chassis 31. The magnetron chassis 31 is fixedly connected to a thermostat 18. The thermostat 18 is electrically connected to the terminal block 23 and the magnetron 20 respectively. The I fan 17, the II fan 21, and the III fan 28 are respectively electrically connected to a power source. When the microwave passes through the metal waveguide 22 and reaches the II fan 21, the rotating II fan 21 evenly diverges the microwave and passes it through the ceramic bearing 26. The III fan 28 enhances the heat dissipation effect of the cooling fins 19. The I fan 17 blows air on the alfalfa being heated, so that the water vapor generated by the alfalfa can be discharged as soon as possible. The thermostat 18 monitors the temperature and controls the turning on and off of the magnetron 20. When the temperature of the dried alfalfa reaches a certain level, the thermostat 18 will turn off the magnetron 20 to prevent damage to the nutritional value of the alfalfa. When the temperature of the dried alfalfa fails to reach the drying temperature, the thermostat 18 will turn on the magnetron 20 again to dry the alfalfa with microwaves.

[0040] For a further optimized solution, a first hydraulic cylinder 13 is hinged to the fixed housing 12, and the output end of the first hydraulic cylinder 13 is hinged to the movable housing 15. The first hydraulic cylinder 13 is rotatably connected to the fixed housing 12 and the movable housing 15 through hinge seats respectively. The movable housing 15 is opened by the first hydraulic cylinder 13 to discharge the baled alfalfa.

[0041] For a further optimized solution, the picker includes reel teeth 1. The reel teeth 1 are fixedly connected to the reel 2. The reel 2 is rotatably connected between two II side plates 33. A second sprocket 34 is fixedly connected to the reel 2. The reel 2 and the polyoxymethylene roller 5 are driven by a chain. A tooth guard 32 is installed between two adjacent reel teeth 1. In this embodiment, several polyoxymethylene rollers 5 further include a fourth polyoxymethylene roller 504. The fourth polyoxymethylene roller 504 is driven by a chain with the reel 2, so that the reel 2 drives the reel teeth 1 to rotate. The tooth guard 32 can effectively prevent alfalfa debris from falling into the picker.

[0042] For a further optimized solution, a fixed roller 4 and a number of auxiliary rollers 27 are rotatably connected between two side plates 33 of type II. A conveyor belt 3 is sleeved outside the fixed roller 4 and the number of auxiliary rollers 27. A first sprocket 10 is fixedly connected to the fixed roller 4, and the fixed roller 4 and the driving shaft 7 are driven by a chain; the driving shaft 7 drives the fixed roller 4 to rotate, the fixed roller 4 drives the conveyor belt 3 to rotate, and the number of auxiliary rollers 27 support the conveyor belt 3.

[0043] For a further optimized solution, through holes are provided on the side plate 16 of type I and the fixed housing 12, and a rotating shaft 30 is inserted through the through holes. The side plate 16 of type I and the fixed housing 12 are rotatably connected through the rotating shaft 30; the side plate 16 of type I can rotate around the rotating shaft 30, and the side plate 16 of type I can be retracted when the device is not working and lowered when the device is working.

[0044] For a further optimized solution, a connecting rod 9 is fixedly connected to the fixed housing 12, and a traveling wheel 6 is rotatably connected to the fixed housing 12; the connecting rod 9 is used to drag the device, and the traveling wheel 6 facilitates the movement of the device.

[0045] Usage method of this device: Use agricultural machinery to tow this device to the working site through the connecting rod 9. An agricultural tractor can be used as an external power source. The external power source transmits power to the driving shaft 7 through a power transmission structure such as a universal shaft, and then transmits it into this device. The driving shaft 7 drives the first polyoxymethylene roller 501 and the fixed roller 4 to rotate. The first polyoxymethylene roller 501 drives the remaining polyoxymethylene rollers 5 to rotate, so that the fourth polyoxymethylene roller 504 rotates. The fourth polyoxymethylene roller 504 drives the reel 2 to rotate. The reel 2 drives the reel teeth 1 to pick up alfalfa and send the alfalfa onto the conveyor belt 3. The fixed roller 4 drives the conveyor belt 3 to rotate, and sends the alfalfa into the fixed housing 12 and the movable housing 15 through the feed inlet 14. A number of polyoxymethylene rollers 5 in the fixed housing 12 and the movable housing 15 rotate to turn the alfalfa into a cylindrical shape. At the same time, the fixed protrusions 29 on the surface of the polyoxymethylene roller 5 increase the friction between the polyoxymethylene roller 5 and the alfalfa, making it easier for the alfalfa to take shape. When the alfalfa reaches a certain volume, the tying mechanism 11 will send out the bale net and wind it around the alfalfa. During the shaping process of the alfalfa, the magnetron 20 generates microwaves. The microwaves are transmitted to the II fan 21 through the metal waveguide 22. The rotating II fan 21 evenly diverges the microwaves and transmits them through the ceramic bearing 26 and the side wall of the polyoxymethylene roller 5, and finally diverges them onto the alfalfa. The moisture in the alfalfa absorbs the microwaves and heats up, causing the moisture to further evaporate. At the same time, the I fan 17 fixed on the two inner side walls of the baler is also rotating to blow air on the alfalfa. The water vapor generated by the alfalfa will be discharged to the outside of this device through the hollow parts of the movable housing 15. The electrical energy of the I fan 17, II fan 21 and III fan 28 is supplied by the 12V battery on the vehicle; connect the terminal 23 to the 12V battery on the vehicle, and use the 12V DC power battery as the power source of the magnetron 20, which can also make the magnetron 20 exert its best performance. The temperature controller 18 will monitor the temperature to control the opening and closing of the magnetron 20. When the temperature of the dried alfalfa reaches a certain temperature, the temperature controller 18 will turn off the magnetron 20 to prevent damage to the nutritional value of the alfalfa; when the temperature of the dried alfalfa fails to reach the drying temperature, the temperature controller 18 will turn on the magnetron 20 again to dry the alfalfa with microwaves. After the alfalfa baling is completed, the first hydraulic cylinder 13 opens the movable housing 15 to discharge the baled alfalfa. The baled alfalfa falls to the ground through the untying light roller 8 and waits to be collected.

[0046] In this embodiment, the fixed housing and the movable housing are covered with a thermal insulation layer, and thermal insulation materials are arranged inside the thermal insulation layer, which can play a role in heat preservation and further improve the drying efficiency. The fixed housing and the movable housing are made of steel plates. Some of the microwaves that are not transmitted to the alfalfa are reflected by the steel plates and refracted towards the alfalfa to be dried, which also further improves the drying efficiency. The polyoxymethylene roller 5, commonly known as acetal sheet, is a high-melting-point and highly crystalline thermoplastic engineering plastic. Because polyoxymethylene has good properties and microwaves can penetrate it well and diverge onto the alfalfa, it is used to make the roller of the baler.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0048] The embodiments described above are only used to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A traction type alfalfa baler with a built-in microwave drying function, characterized in that, Comprising: A bundling assembly, the bundling assembly includes a fixed housing (12) and a movable housing (15) rotatably connected to the fixed housing (12). The fixed housing (12) is provided with a feeding port (14). A conveyor belt (3) is provided at the feeding port (14). A pick-up is provided at one end of the conveyor belt (3) away from the feeding port (14). A plurality of polyoxymethylene rollers (5) are rotatably connected in the fixed housing (12) and the movable housing (15). The polyoxymethylene rollers (5) are drivingly connected to a main shaft (7). A tying mechanism (11) is installed on the fixed housing (12), and the tying mechanism (11) is located above the polyoxymethylene rollers (5); A microwave assembly, the microwave assembly is located inside the polyoxymethylene roller (5), the microwave assembly is rotatably connected to the polyoxymethylene roller (5), and the microwave assembly includes a magnetron chassis (31) which has a terminal block (23) and a magnetron (20); An unbundling assembly, the unbundling assembly includes a plurality of unbundling light rollers (8). The plurality of unbundling light rollers (8) are arranged in a straight line and rotatably connected between two I side plates (16). The two I side plates (16) are rotatably connected to the fixed housing (12); The conveyor belt (3) extends into the feeding port (14). A plurality of fixed protrusions (29) are circumferentially fixedly connected to the outer edge of the polyoxymethylene roller (5). A ceramic bearing (26) is fixedly connected to the inner side wall of the polyoxymethylene roller (5). The inner ring of the ceramic bearing (26) is fixedly connected to the magnetron chassis (31). The magnetron (20) is fixedly connected to a metal waveguide (22). One end of the magnetron (20) extends into the metal waveguide (22). Cooling fins (19) are fixedly installed on the magnetron chassis (31); The ceramic bearing (26) is fixedly connected to the outer ring of the ceramic bearing (26) through a I plastic fixing rod (24), and the inner ring of the ceramic bearing (26) is fixedly connected to the magnetron chassis (31) through a II plastic fixing rod (25); A I fan (17) is fixedly connected to the fixed housing (12). A II fan (21) is fixedly connected to the inner ring of the ceramic bearing (26). The II fan (21) is located at one end of the metal waveguide (22) away from the magnetron (20). A III fan (28) is fixedly installed on the magnetron chassis (31). A thermostat (18) is fixedly connected to the magnetron chassis (31). The thermostat (18) is electrically connected to the terminal block (23) and the magnetron (20) respectively. The I fan (17), the II fan (21) and the III fan (28) are electrically connected to a power source respectively; A connecting rod (9) is fixedly connected to the fixed housing (12), and a traveling wheel (6) is rotatably connected to the fixed housing (12).

2. The self-propelled alfalfa baler with microwave drying function according to claim 1, characterized in that: A plurality of the polyoxymethylene rollers (5) are circumferentially arranged within the fixed housing (12) and the movable housing (15). First sprockets (10) are fixedly connected to the polyoxymethylene rollers (5) and the driving shaft (7) respectively. Chains are sleeved on the first sprockets (10). The polyoxymethylene rollers (5) and the driving shaft (7) are driven by the chains.

3. The self-propelled alfalfa baler with microwave drying function according to claim 1, characterized in that: A first hydraulic cylinder (13) is hinged to the fixed housing (12). The output end of the first hydraulic cylinder (13) is hinged to the movable housing (15).

4. The self-propelled alfalfa baler with microwave drying function according to claim 2, characterized in that: The picker includes reel teeth (1). The reel teeth (1) are fixedly connected to a reel (2). The reel (2) is rotatably connected between two side plates II (33). A second sprocket (34) is fixedly connected to the reel (2). The reel (2) and the polyoxymethylene rollers (5) are driven by the chains. Tooth guards (32) are installed between two adjacent reel teeth (1).

5. The self-propelled alfalfa baler with microwave drying function according to claim 4, characterized in that: A fixed roller (4) and a plurality of auxiliary rollers (27) are rotatably connected between the two side plates II (33). A conveyor belt (3) is sleeved outside the fixed roller (4) and the plurality of auxiliary rollers (27). A first sprocket (10) is fixedly connected to the fixed roller (4). The fixed roller (4) and the driving shaft (7) are driven by the chains.

6. The self-propelled alfalfa baler with microwave drying function according to claim 5, characterized in that: Through holes are formed in the side plate I (16) and the fixed housing (12). A rotating shaft (30) is inserted through the through holes. The side plate I (16) and the fixed housing (12) are rotatably connected through the rotating shaft (30).

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