An internal and external differential winding type bundling device and method

Abstract

The present invention belongs to the technical field of agricultural machinery and equipment, and particularly relates to an internal and external differential winding type bundling device and method. The bundling device includes a fixed housing, a moving housing, an outer winding roller, an inner winding roller and a net winding device; the fixed housing and the moving housing form an opening and closing structure that can be controlled to open and close; a plurality of outer winding rollers are circumferentially distributed in the fixed housing and the moving housing to form a cylindrical bundling and forming space, and the bundling and forming space has a feed inlet located at the front end of the lower part of the fixed housing; the inner winding roller is arranged at the central axis of the bundling and forming space and is rotatably clamped and fixed by the fixed housing and the moving housing; the inner winding roller includes an inner winding roller housing, winding needles, winding needle sleeves, a rotating shaft, springs and wrenches; the net winding device is installed on the fixed housing, above the feed inlet of the bundling and forming space, and is used for conveying the winding net and completing the net breaking operation after the bale is formed.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery and equipment, and particularly relates to an internal and external differential winding type bundling device and method. Background Art

[0002] In China, forage grass and straw resources are abundant. Making them dense and formed through various means is the main way to improve the storage and transportation efficiency. Currently, small and medium-sized round balers account for a relatively high proportion in China, and a relatively high dense forming density can be achieved. Existing round balers are divided into two types: internal winding type and external winding type according to different bundling processes. The main winding components of the external winding type round baler are several steel rollers annularly distributed inside the forming bin, and the main winding component of the internal winding type round baler is a bundling belt. Due to the limitation of the working principle, whether it is an internal winding type or an external winding type round baler, the radial density of the round bales produced is uneven, and it is easy to slip in the later stage of the bundling process. Summary of the Invention

[0003] Aiming at the defects existing in the existing round bale technology, the purpose of the present invention is to provide an internal and external differential winding type bundling device and method, which are used to solve the actual problems of uneven density of the bales produced by the existing round balers and easy slipping in the later stage of bundling.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] An internal and external differential winding type bundling device is arranged behind the conveying and feeding device and is used for bundling forage grass or straw. The bundling device includes a fixed housing 1, a moving housing 2, an external winding roller 3, an internal winding roller 4, and a net winding device 5.

[0006] The fixed housing 1 and the moving housing 2 form an opening and closing structure that can be controlled to open and close.

[0007] A plurality of external winding rollers 3 are circumferentially distributed inside the fixed housing 1 and the moving housing 2, constituting a cylindrical bundling and forming space, and the bundling and forming space has a feeding port 6 located at the front end of the lower part of the fixed housing 1.

[0008] The internal winding roller 4 is arranged at the central axis of the bundling and forming space and is rotatably clamped and fixed by the fixed housing 1 and the moving housing 2.

[0009] The internal winding roller 4 includes an internal winding roller housing 41, a winding needle 42, a winding needle sleeve 43, a rotating shaft 44, a spring 45, and a wrench 46.

[0010] The internal winding roller housing 41 is a hollow cylinder. A roller shaft 412 is fixedly connected to the right end of the internal winding roller housing 41, and a protruding limit groove 413 and a retracting limit groove 414 are provided on the inner wall of the left end.

[0011] Two rows of winding holes are arranged along the axial direction of the inner winding roller housing 41, and the two rows of winding hole rows are located in the same plane passing through the axis of the inner winding roller housing 41; each row of winding hole rows includes a plurality of equally spaced winding holes, and the winding holes of the two rows of winding hole rows are arranged staggeredly; a pair of sleeve rotating shafts 415 parallel to the axis of the inner winding roller housing 41 are provided on the left and right edges of each winding hole.

[0012] A winding needle sleeve 43 is arranged in each winding hole. A winding needle hole 432 penetrating up and down is provided in the middle of the winding needle sleeve 43, and two housing rotating shaft holes 431 cooperating with the sleeve rotating shaft 415 are respectively provided on the left and right sides, and the axes of the two housing rotating shaft holes 431 are perpendicular to the axis of the winding needle hole 432.

[0013] The rotating shaft 44 is arranged inside the inner winding roller housing 41. The rotating shaft 44 is composed of two turntables 442 and two winding needle mounting rods 443 arranged side by side between the two turntables 442. Two wrench limiting protrusions 441 are provided on the outer end surface of the left turntable 442.

[0014] A plurality of winding needles 42 are vertically hinged on each winding needle mounting rod 443, and each winding needle 42 corresponds to a winding hole of the inner winding roller housing 41 and can slide freely in the winding needle hole 432 of the winding needle sleeve 43 arranged in the winding hole.

[0015] The wrench 46 is arranged on the left side of the rotating shaft 44. A wrench limiting groove 462 that always cooperates with and is limited by the wrench limiting protrusion 441 is provided on the right end face of the wrench 46. A spring 45 is provided between the turntable 442 at the left end of the rotating shaft 44 and the wrench 46. A telescopic limiting protrusion 461 that can respectively cooperate with and be limited by the extended limiting groove 413 and the retracted limiting groove 414 of the inner winding roller housing 41 is provided on the left end face of the wrench 46. Press and rotate the wrench 46 along the axial direction of the inner winding roller housing 41 so that the telescopic limiting protrusion 461 of the wrench 46 corresponds to the extended limiting groove 413 or the retracted limiting groove 414. Remove the pressing force on the wrench 46. Under the action of the spring 45, the telescopic limiting protrusion 461 is inserted into the extended limiting groove 413 or the retracted limiting groove 414. When the telescopic limiting protrusion 461 of the wrench 46 is located in the extended limiting groove 413, the two winding needle mounting rods 443 of the rotating shaft 44 are respectively located at the nearest positions of the corresponding rows of winding holes, so that the winding needles 42 on the winding needle mounting rods 443 completely protrude from the winding needle holes 432. At this time, the winding needles 42 are in the extended state. Press and rotate the wrench 46 along the axial direction of the inner winding roller housing 41. The telescopic limiting protrusion 461 of the wrench 46 disengages from the extended limiting groove 413. Rotate the wrench 46, and the two winding needle mounting rods 443 of the rotating shaft 44 respectively move away from the corresponding rows of winding holes, so that the winding needles 42 on the winding needle mounting rods 443 retract from the winding needle holes 432 into the inner winding roller housing 41. Continue to rotate the wrench 46. Under the action of the spring 45, the telescopic limiting protrusion 461 is located in the retracted limiting groove 414. The two winding needle mounting rods 443 of the rotating shaft 44 are respectively located at the farthest positions of the corresponding rows of winding holes, so that the winding needles 42 on the winding needle mounting rods 443 are completely retracted into the inner winding roller housing 41. At this time, the winding needles 42 are in the retracted state.

[0016] The net winding device 5 is installed on the fixed housing 1, above the feed port 6 of the bundling and forming space, and is used for conveying and winding the net and completing the net breaking operation after the bale is formed.

[0017] A fixed housing rotating shaft hole 12 is provided at the upper end of the fixed housing 1, and a moving housing rotating shaft 22 that is hinged in cooperation with the fixed housing rotating shaft hole 12 is provided at the upper end of the moving housing 2.

[0018] The surface of the outer winding roller 3 is provided with roller patterns.

[0019] A bearing 411 is provided on the outer surface of the right end of the inner winding roller housing 41. The outer surface of the left end of the inner winding roller housing 41 forms a rotating pair with the fixed housing 1 and the moving housing 2. Fixed housing buckles 11 and moving housing buckles 21 for clamping the bearing 411 are respectively provided on the fixed housing 1 and the moving housing 2.

[0020] The central line included angle between the extended limiting groove 413 and the retracted limiting groove 414 is 167°.

[0021] A keyway for connecting with the power output shaft of the inner winding roller driving motor is provided on the roller shaft 412.

[0022] Outer winding roller driving gears 31 are provided at both ends of each outer winding roller 3, and are driven to rotate synchronously by an outer winding roller driving motor through chain drive.

[0023] An inner and outer differential winding type baling method using the inner and outer differential winding type baling device as described above includes the following steps:

[0024] S1. Set the winding needles 42 of the inner winding roller 4 of the baling device to the extended state, and keep the rotating shaft 44 of the inner winding roller 4 in key connection with the inner winding roller driving motor, and the inner winding roller driving motor is in the shutdown state; start the outer winding roller driving motor to make all the outer winding rollers 3 rotate clockwise at the same first outer roller speed ω W1 ; feed forage or straw into the baling and forming space continuously through the feeding device of the baling device through the feed inlet 6 of the baling device; under the combined action of the rotating outer winding roller 3 and the stationary inner winding roller 4, the forage or straw tumbles in the baling and forming space and winds around the inner winding roller 4 and the winding needles 42 until a stable grass core is formed.

[0025] S2. Start the inner winding roller driving motor to make the inner winding roller 4 rotate clockwise at the first inner roller speed ω N1 . At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 1, so that the continuously fed forage or straw winds around the periphery of the grass core, and at the same time makes the grass core further densify until the baling and forming space is preliminarily filled.

[0026] ω N1 R1 = ω W1 R2 Formula 1

[0027] In Formula 1, R1 is the radius of the cylindrical baling and forming space, in cm; R2 is the radius of the outer winding roller 3, in cm; ω N1 is the first inner roller speed, in r / min; ω W1 is the first outer roller speed, in r / min.

[0028] S3. Control the inner winding roller driving motor to make the inner winding roller 4 rotate counterclockwise at the second inner roller speed ω N2 . At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 2, so that the continuously fed forage or straw continues to wind and densify along the periphery of the bale until the set baling density is reached, and then stop feeding.

[0029] 2ω N2 R1 = ω W1 R2 Formula 2

[0030] In Formula 2, R1 is the radius of the cylindrical baling forming space, with the unit of cm; R2 is the radius of the outer winding roller 3, with the unit of cm; ω N2 is the rotational speed of the second inner roller, with the unit of r / min; ω W1 is the rotational speed of the first outer roller, with the unit of r / min;

[0031] S4. Start the net winding device 5, and control the inner winding roller drive motor and the outer winding roller drive motor, so that the inner winding roller 4 rotates counterclockwise at the rotational speed of the third inner roller ω N3 , and the outer winding roller 3 rotates clockwise at the rotational speed of the second outer roller ω W1 which is lower than the rotational speed of the first outer roller ω W2 . At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 3 until the net winding is completed and the net is cut off;

[0032] ω N3 R1 = ω W2 R2 Formula 3

[0033] In Formula 3, R1 is the radius of the cylindrical baling forming space, with the unit of cm; R2 is the radius of the outer winding roller 3, with the unit of cm; ω N3 is the rotational speed of the third inner roller, with the unit of r / min; ω W2 is the rotational speed of the second outer roller, with the unit of r / min;

[0034] S5. Turn off the inner winding roller drive motor, and release the key connection between the inner winding roller drive motor and the rotating shaft 44 of the inner winding roller 4; Open the moving housing 2, so that the fixed housing buckle 11 and the moving housing buckle 21 are separated, releasing the bearing 411 of the inner winding roller 4. The bale and the inner winding roller 4 roll out of the baling forming space together; Adjust the position of the telescopic limit protrusion 461 of the wrench 46, changing from the extended limit groove 413 to the retracted limit groove 414, so that the winding needles 42 of the inner winding roller 4 become in the retracted state; Then pull out the inner winding roller 4 from one side of the bearing 411 from the bale, reinstall it at the center of the baling forming space, close the moving housing 2, and make the fixed housing buckle 11 and the moving housing buckle 21 buckle together to surround the bearing 411; Repeat steps S1 - S5 to perform the next baling operation.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] 1. The method and device of the present invention can improve the density uniformity along the radial direction of the round bale and the overall density of the round bale compared with the inner winding type and outer winding type round balers;

[0037] First, the outer winding roller 3 rotates while the inner winding roller and the winding needle are stationary, which can shorten the formation process and stabilization time of the grass core; then the inner winding roller and the outer winding roller rotate in the same speed and opposite directions, which can accelerate the winding of the grass around the grass core and further densify the grass core; finally, the inner winding roller rotates in the same direction as the outer winding roller at a relatively lower speed, and under the combined action, the bale, especially the grass core, is further densified.

[0038] 2. The method and device of the present invention can prevent slipping during the later stage of bale forming, improve the bundling efficiency, and reduce the working energy consumption of the device.

[0039] 3. The inner winding roller of the device of the present invention can be adjusted between the extended and retracted states, and can be taken out from the bale after opening the bin to release the bale, so as to realize the rapid reset of the whole device and enter the next working process; when the device is not operating, the inner winding roller can be adjusted to the retracted state for separate storage and maintenance, reducing the maintenance cost; when the inner winding roller is damaged, it can be directly replaced with a new one for repair, improving the working efficiency of the device. Description of the Drawings

[0040] Figure 1 is a schematic perspective view of the internal and external differential winding type bale forming device of the present invention;

[0041] Figure 2 is a schematic front view of the internal and external differential winding type bale forming device of the present invention;

[0042] Figure 3 is a schematic structural view of the inner winding roller 4 of the present invention;

[0043] Figure 4 is an installation schematic view of the winding needle 42, the winding needle sleeve 43, and the inner winding roller housing 41 of the present invention;

[0044] Figure 5 is a partial structural schematic view of the inner winding roller housing 41 of the present invention;

[0045] Figure 6 is a schematic structural view of the winding needle sleeve 43 of the present invention;

[0046] Figure 7 is a schematic structural view of the rotating shaft 44 of the present invention;

[0047] Figure 8 is a schematic structural view of the pressing wrench 46 of the present invention;

[0048] Figure 9 is a schematic view of the extended state of the winding needle 42 of the inner winding roller 4 of the present invention (the inner winding roller housing 41 is hidden);

[0049] Figure 10Schematic diagram of the adjustment state of the winding needle 42 of the inner winding roller 4 of the present invention (the inner winding roller housing 41 is hidden);

[0050] Figure 11 Schematic diagram of the retracted state of the winding needle 42 of the inner winding roller 4 of the present invention (the inner winding roller housing 41 is hidden);

[0051] Figure 12 Schematic diagram of the position of the pressing wrench 46 when the winding needle 42 of the inner winding roller 4 of the present invention is in the extended state;

[0052] Figure 13 Schematic diagram of the position of the pressing wrench 46 when the winding needle 42 of the inner winding roller 4 of the present invention is in the adjustment state;

[0053] Figure 14 Schematic diagram of the position of the pressing wrench 46 when the winding needle 42 of the inner winding roller 4 of the present invention is in the retracted state;

[0054] Figure 15 Right view of the bundling and forming space of the present invention.

[0055] The reference numerals therein are:

[0056] 1 Fixed housing

[0057] 11 Fixed housing buckle 12 Fixed housing rotating shaft hole

[0058] 2 Moving housing

[0059] 21 Moving housing buckle 22 Moving housing rotating shaft

[0060] 3 Outer winding roller

[0061] 31 Outer winding roller drive gear

[0062] 4 Inner winding roller

[0063] 41 Inner winding roller housing 411 Bearing

[0064] 412 Roller shaft 413 Extended limit groove

[0065] 414 Retracted limit groove 415 Sleeve rotating shaft

[0066] 42 Winding needle

[0067] 43 Winding needle sleeve

[0068] 431 Housing rotating shaft hole 432 Winding needle hole

[0069] 44 Rotating shaft 441 Wrench limit protrusion

[0070] 442 Turntable 443 Winding needle mounting rod

[0071] 45 Spring

[0072] 46 wrench

[0073] 461 telescopic limit projection, 462 wrench limit groove

[0074] 5 net winding device

[0075] 6 feed inlet Specific implementation manner

[0076] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0077] As Figure 1 and Figure 2 shown, an internal and external differential winding type bundling device is arranged behind the conveying and feeding device and is used for bundling forage grass or straw. The bundling device includes a fixed housing 1, a moving housing 2, an outer winding roller 3, an inner winding roller 4 and a net winding device 5.

[0078] The fixed housing 1 and the moving housing 2 form an opening and closing structure that can be controlled to open and close. A fixed housing rotating shaft hole 12 is provided at the upper end of the fixed housing 1, and a moving housing rotating shaft 22 that is hinged in cooperation with the fixed housing rotating shaft hole 12 is provided at the upper end of the moving housing 2.

[0079] A plurality of outer winding rollers 3 are arranged circumferentially in the fixed housing 1 and the moving housing 2 to form a cylindrical bundling and forming space. As Figure 15 shown, the bundling and forming space has a feed inlet 6 located at the front end of the lower part of the fixed housing 1.

[0080] The inner winding roller 4 is arranged at the central axis of the bundling and forming space and is rotatably clamped and fixed by the fixed housing 1 and the moving housing 2.

[0081] Outer winding roller drive gears 31 are provided at both ends of each outer winding roller 3 and are driven to rotate synchronously by an outer winding roller drive motor through chain drive; the surface of the outer winding roller 3 is provided with roller patterns.

[0082] As Figure 3 、 Figure 4 、 Figure 7 and Figure 9 shown, the inner winding roller 4 includes an inner winding roller housing 41, a winding needle 42, a winding needle sleeve 43, a rotating shaft 44, a spring 45 and a wrench 46.

[0083] As Figure 5 and Figure 12As shown, the inner winding roller housing 41 is a hollow cylinder. A roller shaft 412 is fixedly connected to the right end of the inner winding roller housing 41, and a protruding limit groove 413 and a retracting limit groove 414 are provided on the inner wall of the left end. A keyway for connecting with the power output shaft of the inner winding roller driving motor is provided on the roller shaft 412. The central line included angle between the protruding limit groove 413 and the retracting limit groove 414 is 167°.

[0084] A bearing 411 is provided on the outer surface of the right end of the inner winding roller housing 41, and the outer surface of the left end of the inner winding roller housing 41 forms a rotating pair with the fixed housing 1 and the moving housing 2. Fixed housing buckles 11 and moving housing buckles 21 for clamping the bearing 411 are respectively provided on the fixed housing 1 and the moving housing 2.

[0085] Two rows of winding holes are provided on the inner winding roller housing 41 along its axial direction. The two rows of winding hole rows are located in the same plane passing through the axis of the inner winding roller housing 41. Each row of winding hole rows includes a plurality of equally spaced winding holes, and the winding holes of the two rows of winding hole rows are arranged staggeredly. A pair of sleeve rotating shafts 415 parallel to the axis of the inner winding roller housing 41 are provided on the left and right edges of each winding hole.

[0086] A winding needle sleeve 43 is arranged in each winding hole. As Figure 6 shown, a vertically penetrating winding needle hole 432 is provided in the middle of the winding needle sleeve 43, and two housing rotating shaft holes 431 for cooperating with the sleeve rotating shaft 415 are respectively provided on the left and right sides, and the axes of the two housing rotating shaft holes 431 are perpendicular to the axis of the winding needle hole 432.

[0087] The rotating shaft 44 is arranged inside the inner winding roller housing 41. As Figure 7 shown, the rotating shaft 44 is composed of two turntables 442 and two winding needle mounting rods 443 arranged side by side between the two turntables 442. Two wrench limit protrusions 441 are provided on the outer end surface of the left end turntable 442.

[0088] A plurality of winding needles 42 are vertically hinged on each winding needle mounting rod 443, and each winding needle 42 corresponds to a winding hole of the inner winding roller housing 41 and can freely slide in the winding needle hole 432 of the winding needle sleeve 43 arranged in the winding hole.

[0089] The wrench 46 is arranged on the left side of the rotating shaft 44. As Figure 8As shown, a wrench limiting groove 462 that always cooperates with and limits the wrench limiting protrusion 441 is provided on the right end face of the wrench 46. A spring 45 is provided between the turntable 442 at the left end of the rotating shaft 44 and the wrench 46; a telescopic limiting protrusion 461 that can respectively cooperate with and limit the extending limiting groove 413 and the retracting limiting groove 414 of the inner winding roller housing 41 is provided on the left end face of the wrench 46; press and rotate the wrench 46 along the axial direction of the inner winding roller housing 41 to make the telescopic limiting protrusion 461 of the wrench 46 correspond to the extending limiting groove 413 or the retracting limiting groove 414, and remove the pressing force on the wrench 46. Under the action of the spring 45, the telescopic limiting protrusion 461 is inserted into the extending limiting groove 413 or the retracting limiting groove 414; as Figure 12 shown, when the telescopic limiting protrusion 461 of the wrench 46 is located in the extending limiting groove 413, the two winding needle mounting rods 443 of the rotating shaft 44 are respectively located at the closest positions of the corresponding winding hole rows, so that the winding needles 42 on the winding needle mounting rods 443 completely protrude from the winding needle holes 432. At this time, the winding needles 42 are in the extended state, as Figure 9 shown; press and rotate the wrench 46 along the axial direction of the inner winding roller housing 41, and the telescopic limiting protrusion 461 of the wrench 46 disengages from the extending limiting groove 413, as Figure 13 shown, rotate the wrench 46, and the two winding needle mounting rods 443 of the rotating shaft 44 respectively move away from the corresponding winding hole rows, so that the winding needles 42 on the winding needle mounting rods 443 retract from the winding needle holes 432 into the inner winding roller housing 41, as Figure 10 shown; continue to rotate the wrench 46, and under the action of the spring 45, make the telescopic limiting protrusion 461 located in the retracting limiting groove 414, as Figure 14 shown; the two winding needle mounting rods 443 of the rotating shaft 44 are respectively located at the farthest positions of the corresponding winding hole rows, so that the winding needles 42 on the winding needle mounting rods 443 completely retract into the inner winding roller housing 41. At this time, the winding needles 42 are in the retracted state, as Figure 11 shown.

[0090] The net winding device 5 is installed on the fixed housing 1, above the feed port 6 of the bundling and forming space, and is used for conveying and winding the net and completing the net breaking operation after the bale is formed.

[0091] An internal and external differential winding type bundling method using the above internal and external differential winding type bundling device includes the following steps:

[0092] S1. Set the winding needles 42 of the inner winding roller 4 of the bundling device to the extended state, and keep the rotating shaft 44 of the inner winding roller 4 key-connected to the inner winding roller drive motor, and the inner winding roller drive motor is in the shutdown state; start the outer winding roller drive motor, so that all the outer winding rollers 3 rotate at the same first outer roller speed ω W1 clockwise (as Figure 15Rotate clockwise (as shown in the clockwise direction); feed forage or straw into the bundling forming space continuously through the conveying and feeding device via the feed inlet 6 of the bundling device; under the combined action of the rotating outer winding roller 3 and the stationary inner winding roller 4, the forage or straw tumbles in the bundling forming space and winds around the inner winding roller 4 and the winding needles 42 until a stable core is formed;

[0093] S2. Start the inner winding roller drive motor to make the inner winding roller 4 rotate clockwise (as shown in the clockwise direction) at the first inner roller speed ω N1 clockwise (such as Figure 15 shown in the clockwise direction). At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 1, so that the continuously fed forage or straw winds around the periphery of the core, and at the same time makes the core denser until the bundling forming space is preliminarily filled;

[0094] ω N1 R1 = ω W1 R2 Formula 1

[0095] In Formula 1, R1 is the radius of the cylindrical bundling forming space, in cm; R2 is the radius of the outer winding roller 3, in cm; ω N1 is the first inner roller speed, in r / min; ω W1 is the first outer roller speed, in r / min;

[0096] S3. Control the inner winding roller drive motor to make the inner winding roller 4 rotate counterclockwise (as shown in the counterclockwise direction) at the second inner roller speed ω N2 counterclockwise (such as Figure 15 shown in the counterclockwise direction). At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 2, so that the continuously fed forage or straw continues to wind and be densified along the periphery of the bale until the set bale density is reached, and then stop feeding;

[0097] 2ω N2 R1 = ω W1 R2 Formula 2

[0098] In Formula 2, R1 is the radius of the cylindrical bundling forming space, in cm; R2 is the radius of the outer winding roller 3, in cm; ω N2 is the second inner roller speed, in r / min; ω W1 is the first outer roller speed, in r / min;

[0099] S4. Start the net winding device 5, and control the inner winding roller drive motor and the outer winding roller drive motor to make the inner winding roller 4 rotate counterclockwise (as shown in the counterclockwise direction) at the third inner roller speed ω N3 counterclockwise (such as Figure 15 shown in the counterclockwise direction), and the outer winding roller 3 rotates at the second outer roller speed ω W1 lower than the first outer roller speed ω W2Rotate clockwise. At this time, the rotational speeds of the inner winding roller 4 and the outer winding roller 3 satisfy Formula 3 until the net winding is completed and the net is cut off;

[0100] ω N3 R1 = ω W2 R2 Formula 3

[0101] In Formula 3, R1 is the radius of the cylindrical bundling and forming space, with the unit of cm; R2 is the radius of the outer winding roller 3, with the unit of cm; ω N3 is the rotational speed of the third inner roller, with the unit of r / min; ω W2 is the rotational speed of the second outer roller, with the unit of r / min;

[0102] S5. Turn off the driving motor of the inner winding roller, and release the key connection between the driving motor of the inner winding roller and the rotating shaft 44 of the inner winding roller 4; Start the moving housing 2 to separate the fixed housing buckle 11 and the moving housing buckle 21, release the bearing 411 of the inner winding roller 4, and let the bale roll out of the bundling and forming space together with the inner winding roller 4; Adjust the position of the telescopic limit protrusion 461 of the wrench 46, change it from the extended limit groove 413 to the retracted limit groove 414, so that the winding needle 42 of the inner winding roller 4 becomes the retracted state; Then pull out the inner winding roller 4 from one side of the bearing 411 from the bale, reinstall it at the center of the bundling and forming space, close the moving housing 2, and make the fixed housing buckle 11 and the moving housing buckle 21 buckle together to surround the bearing 411; Repeat steps S1 - S5 to perform the next bundling operation.

[0103] Finally, it should be pointed out that the above is only used to illustrate the technical solution of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that modifying the technical solutions described in the foregoing embodiments or equivalently replacing some technical features and structures are within the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. An internal and external differential winding type bundling device, arranged behind the conveying and feeding device, and used for bundling forage or straw. It is characterized in that, The bundling device includes a fixed housing (1), a moving housing (2), an outer winding roller (3), an inner winding roller (4), and a net winding device (5); The fixed housing (1) and the moving housing (2) form an opening and closing structure that can be controlled to open and close; A plurality of outer winding rollers (3) are circumferentially distributed in the fixed housing (1) and the moving housing (2), constituting a cylindrical bundling and forming space, and the bundling and forming space has a feed inlet (6) located at the front end of the lower part of the fixed housing (1); The inner winding roller (4) is arranged at the central axis of the bundling and forming space and is rotatably clamped and fixed by the fixed housing (1) and the moving housing (2); The inner winding roller (4) includes an inner winding roller housing (41), winding needles (42), winding needle sleeves (43), a rotating shaft (44), a spring (45), and a wrench (46); The inner winding roller housing (41) is a hollow cylinder, the right end of the inner winding roller housing (41) is fixedly connected with a roller shaft (412), and the inner wall of the left end is provided with an extending limit groove (413) and a retracting limit groove (414); Two rows of winding hole rows are arranged along the axial direction of the inner winding roller housing (41), and the two rows of winding hole rows are located in the same plane passing through the axis of the inner winding roller housing (41); each row of winding hole rows includes a plurality of equally spaced winding holes, and the winding holes of the two rows of winding hole rows are staggered; a pair of sleeve rotating shafts (415) parallel to the axis of the inner winding roller housing (41) are provided on the left and right edges of each winding hole; A winding needle sleeve (43) is arranged in each winding hole, the middle part of the winding needle sleeve (43) is provided with a vertically penetrating winding needle hole (432), and two housing rotating shaft holes (431) cooperating with the sleeve rotating shafts (415) are respectively provided on the left and right sides, and the axes of the two housing rotating shaft holes (431) are perpendicular to the axis of the winding needle hole (432); The rotating shaft (44) is arranged inside the inner winding roller housing (41), and the rotating shaft (44) is composed of two turntables (442) and two winding needle mounting rods (443) arranged side by side between the two turntables (442), and two wrench limit protrusions (441) are provided on the outer end surface of the left turntable (442); A plurality of winding needles (42) are vertically hinged on each winding needle mounting rod (443), and each winding needle (42) corresponds to a winding hole of the inner winding roller housing (41) and can freely slide in the winding needle hole (432) of the winding needle sleeve (43) arranged in the winding hole; The wrench (46) is arranged on the left side of the rotating shaft (44). A wrench limiting groove (462) that always cooperates with and limits the wrench limiting protrusion (441) is provided on the right end face of the wrench (46). A spring (45) is provided between the turntable (442) at the left end of the rotating shaft (44) and the wrench (46); a telescopic limiting protrusion (461) that can respectively cooperate with and limit the extended limiting groove (413) and the retracted limiting groove (414) of the inner winding roller housing (41) is provided on the left end face of the wrench (46); press and rotate the wrench (46) along the axial direction of the inner winding roller housing (41) so that the telescopic limiting protrusion (461) of the wrench (46) corresponds to the extended limiting groove (413) or the retracted limiting groove (414). Remove the pressing force on the wrench (46). Under the action of the spring (45), the telescopic limiting protrusion (461) is inserted into the extended limiting groove (413) or the retracted limiting groove (414); when the telescopic limiting protrusion (461) of the wrench (46) is located in the extended limiting groove (413), the two winding needle mounting rods (443) of the rotating shaft (44) are respectively located at the nearest positions of the corresponding rows of winding holes, so that the winding needles (42) on the winding needle mounting rods (443) completely protrude from the winding needle holes (432). At this time, the winding needles (42) are in the extended state; press and rotate the wrench (46) along the axial direction of the inner winding roller housing (41), the telescopic limiting protrusion (461) of the wrench (46) disengages from the extended limiting groove (413), rotate the wrench (46), and the two winding needle mounting rods (443) of the rotating shaft (44) are respectively away from the corresponding rows of winding holes, so that the winding needles (42) on the winding needle mounting rods (443) retract from the winding needle holes (432) into the inner winding roller housing (41); continue to rotate the wrench (46), and under the action of the spring (45), make the telescopic limiting protrusion (461) located in the retracted limiting groove (414); the two winding needle mounting rods (443) of the rotating shaft (44) are respectively located at the farthest positions of the corresponding rows of winding holes, so that the winding needles (42) on the winding needle mounting rods (443) completely retract into the inner winding roller housing (41). At this time, the winding needles (42) are in the retracted state; The net winding device (5) is installed on the fixed housing (1), above the feeding port (6) of the bundling and forming space, and is used for conveying the winding net and completing the net breaking operation after the bale is formed.

2. The internal and external differential winding type bundling device according to claim 1, characterized in that, A fixed housing rotating shaft hole (12) is provided at the upper end of the fixed housing (1), and a moving housing rotating shaft (22) that is hinged in cooperation with the fixed housing rotating shaft hole (12) is provided at the upper end of the moving housing (2).

3. The internal and external differential winding type bundling device according to claim 1, characterized in that, The surface of the outer winding roller (3) is provided with roller patterns.

4. The internal and external differential winding type bundling device according to claim 1, characterized in that, Bearings (411) are provided on the outer surface at the right end of the inner winding roller housing (41). The outer surface at the left end of the inner winding roller housing (41) forms a rotating pair with the fixed housing (1) and the moving housing (2); fixed housing clasps (11) and moving housing clasps (21) for clamping the bearings (411) are respectively provided on the fixed housing (1) and the moving housing (2).

5. The internal and external differential winding type bundling device according to claim 1, characterized in that, The included angle between the centerlines of the extension limiting groove (413) and the retraction limiting groove (414) is 167°.

6. The internal and external differential winding type bundling device according to claim 1, characterized in that, A keyway for connecting with the power output shaft of the inner winding roller driving motor is provided on the roller shaft (412).

7. The internal and external differential winding type bundling device according to claim 1, characterized in that, External winding roller driving gears (31) are provided at both ends of each external winding roller (3), and are driven to rotate synchronously by an external winding roller driving motor through chain drive.

8. An internal and external differential winding type bundling method using the internal and external differential winding type bundling device according to any one of claims 1-7, characterized in that, The method includes the following steps: S1. Set the winding needles (42) of the inner winding roller (4) of the bundling device to the extended state, and keep the rotating shaft (44) of the inner winding roller (4) key-connected to the inner winding roller drive motor, with the inner winding roller drive motor in the stopped state; start the outer winding roller drive motor to make all the outer winding rollers (3) rotate clockwise at the same first outer roller speed ω W1 ; continuously feed forage or straw into the bale forming space through the feeding device of the bundling device through the feed inlet (6) of the bundling device; under the combined action of the rotating outer winding roller (3) and the stationary inner winding roller (4), the forage or straw tumbles in the bale forming space and winds around the inner winding roller (4) and the winding needles (42) until a stable grass core is formed. S2. Start the inner winding roller drive motor to make the inner winding roller (4) rotate clockwise at the first inner roller speed ω N1 At this time, the rotational speeds of the inner winding roller (4) and the outer winding roller (3) satisfy Formula 1, so that the continuously fed forage or straw is wound around the periphery of the straw core, and at the same time, the straw core is further densified until the baling forming space is initially filled; ω N1 R1 = ω W1 R2 Formula 1 In Formula 1, R1 is the radius of the cylindrical baling forming space, with the unit of cm; R2 is the radius of the outer winding roller (3), with the unit of cm; ω N1 is the rotational speed of the first inner roller, with the unit of r / min; ω W1 is the rotational speed of the first outer roller, with the unit of r / min; S3. Control the inner winding roller drive motor to make the inner winding roller (4) rotate counterclockwise at the second inner roller speed ω N2 At this time, the rotational speeds of the inner winding roller (4) and the outer winding roller (3) satisfy Formula 2, so that the continuously fed forage or straw continues to wind and densify along the periphery of the bale until the set bale density is reached, and then stop feeding; 2ω N2 R1 = ω W1 R2 Formula 2 In Formula 2, R1 is the radius of the cylindrical baling forming space, with the unit of cm; R2 is the radius of the outer winding roller (3), with the unit of cm; ω N2 is the rotational speed of the second inner roller, with the unit of r / min; ω W1 is the rotational speed of the first outer roller, with the unit of r / min; S4. Start the net winding device (5), and control the inner winding roller drive motor and the outer winding roller drive motor, so that the inner winding roller (4) rotates counterclockwise at the third inner roller speed ω N3 while the outer winding roller (3) rotates clockwise at the second outer roller speed ω W1 lower than the first outer roller speed ω W2 . At this time, the rotational speeds of the inner winding roller (4) and the outer winding roller (3) satisfy Formula 3 until the net winding is completed and the net is cut off; ω N3 R1 = ω W2 R2 Equation 3 In Formula 3, R1 is the radius of the cylindrical baling forming space, with the unit of cm; R2 is the radius of the outer winding roller (3), with the unit of cm; ω N3 is the rotational speed of the third inner roller, with the unit of r / min; ω W2 is the rotational speed of the second outer roller, with the unit of r / min; S5. Turn off the inner winding roller driving motor and release the key connection between the inner winding roller driving motor and the rotating shaft (44) of the inner winding roller (4); Start the starting housing (2) to separate the fixed housing buckle (11) from the moving housing buckle (21), release the bearing (411) of the inner winding roller (4), and let the bale roll out of the baling and forming space together with the inner winding roller (4); adjust the position of the telescopic limiting protrusion (461) of the wrench (46) to change from the extension limiting groove (413) to the retraction limiting groove (414), so that the winding needles (42) of the inner winding roller (4) are in the retracted state; then pull out the inner winding roller (4) from one side of the bearing (411) from the bale, reinstall it at the center of the baling and forming space, close the moving housing (2), and make the fixed housing buckle (11) and the moving housing buckle (21) buckle together to surround the bearing (411); repeat steps S1 - S5 to perform the next baling operation.

Images