Silage feeder gearbox

Abstract

The silage machine feeding gearbox comprises an input shaft, a first intermediate shaft, a first output shaft, a second intermediate shaft and a safety clutch, the input shaft is connected with the first intermediate shaft through gear transmission, the first intermediate shaft is connected with a first gear set, the first output shaft is movably sleeved with a multiple gear, the second intermediate shaft is movably sleeved with a second gear set, the first gear set and the second gear set are both connected with the multiple gear, the input end of the safety clutch is connected with the second gear set, the output end of the safety clutch is connected with the second intermediate shaft, the first intermediate shaft is further connected with a first transmission gear, the first output shaft is further connected with a first output gear, and the first output gear is engaged with the first transmission gear. When the silage machine is blocked or overloaded, the safety clutch is disconnected to avoid gear damage, and multi-gear transmission is achieved.

Description

Technical Field

[0001] This invention relates to the field of silage harvesting machinery technology, specifically to a silage harvester feeding gearbox. Background Technology

[0002] The feeding module of silage harvesting machinery typically uses a four-speed gearbox or direct motor drive. Currently, the market has various requirements regarding the length of silage straw. The feeding module of silage harvesting machinery controls the length of the cut straw by changing its rotation speed to adjust the straw feeding rate. With a four-speed gearbox, the speed adjustment of the feeding module depends on changing gears, but four gears cannot meet all the diverse market requirements for silage straw length. Direct motor drive, on the other hand, cannot guarantee consistent straw length over long periods, resulting in poor stability and high production and maintenance costs.

[0003] In addition, during the operation of the feeding module of silage harvesting machinery, due to changes in crop density and stagnation, situations such as grass blockage or overload often occur. Forcing the machine to continue working under these circumstances can easily damage the transmission gears of the gearbox, preventing the user from continuing the harvesting operation and seriously affecting the harvesting progress. Summary of the Invention

[0004] The technical problems to be solved by this invention are: how to increase the variety of silage straw lengths produced by the silage machine; and how to avoid damage to the transmission gears caused by straw blockage or overload.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] This invention provides a forage machine feeding gearbox, comprising an input shaft, an intermediate shaft, a first output shaft, a second intermediate shaft, and a safety clutch. The input shaft and the intermediate shaft are connected via gear transmission. A first gear set is connected to the intermediate shaft, a multi-gear assembly is movably mounted on the first output shaft, and a second gear set is movably mounted on the second intermediate shaft. Both the first and second gear sets can be connected to the multi-gear assembly. The input end of the safety clutch is connected to the second gear set, and the output end of the safety clutch is connected to the second intermediate shaft. A first transmission gear is also connected to the second intermediate shaft, and a first output gear is also connected to the first output shaft. The first output gear meshes with the first transmission gear.

[0007] The beneficial effects of this invention are:

[0008] Using this invention, when the feeding module experiences straw blockage or overload, the safety clutch disengages, cutting off the power transmission from the second gear set to the intermediate shaft, and allowing the second gear set to idle without load. This avoids gear damage caused by straw blockage or overload, resulting in a long service life and high reliability. In addition, the first gear set and the multi-gear can achieve a first gear shift, and the multi-gear and the second gear set can achieve a second gear shift. By combining the two gear shifts, more than four gears can be achieved, increasing the variety of silage straw lengths produced by the silage machine.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, it also includes a second output shaft and a second transmission gear, the second output shaft and the second transmission gear being connected by gear transmission, and the second transmission gear being connected by transmission to the first transmission gear.

[0011] The second output shaft can be used to connect to another feeding module of the silage harvesting machine, which facilitates the simultaneous operation of two feeding modules, occupies little space, enhances the functionality of the silage harvester, and saves on other independent gearbox structures. At the same time, the power of both output shafts is transmitted through the intermediate second shaft, and thus both are controlled by the safety clutch, avoiding gear damage caused by grass blockage or overload, resulting in a long service life and good reliability.

[0012] Furthermore, it also includes an input reversing shaft, on which a reversing drive wheel is connected. When the reversing drive wheel moves along the axial direction of the input reversing shaft, it can engage or disengage with the second transmission gear.

[0013] When the safety clutch is disengaged, the reverse drive wheel can mesh with the second transmission gear, activating the reverse drive device. This drives the second transmission gear to rotate in the reverse direction, transmitting power to the first output shaft and the second output shaft to rotate in the reverse direction. This, in turn, drives the feeding module of the silage machine to rotate in the reverse direction and discharge the material. This facilitates the quick resolution of silage blockage and overload issues, improving operational efficiency.

[0014] Furthermore, it also includes an intermediate three-shaft, with transmission gears at both ends of the intermediate three-shaft. The transmission gear at one end of the intermediate three-shaft meshes with the second transmission gear, and the transmission gear at the other end of the intermediate three-shaft meshes with the first transmission gear.

[0015] This design allows the second transmission gear to avoid interference with the second speed change gear set on the intermediate two shafts, resulting in a compact structure.

[0016] Furthermore, a second output gear is also connected to the second output shaft, and the second output gear is connected to the second transmission gear through an idler gear drive.

[0017] It facilitates the transmission of power to the second output shaft, has a compact structure, and occupies little space.

[0018] Furthermore, the first gear set includes a high-gear gear and a low-gear gear, both of which are connected to an intermediate shaft, and the high-gear gear and the low-gear gear can synchronously slide along the axial direction of the intermediate shaft to one of the following states:

[0019] State a: The high-gear gear meshes with the multi-gear, and the low-gear gear disengages from the multi-gear; State b: The low-gear gear meshes with the multi-gear, and the high-gear gear disengages from the multi-gear; State c: Both the high-gear and low-gear gear disengage from the multi-gear.

[0020] It facilitates switching between high and low speed gears, increases the gearing effect of the second gear set, and increases the variety of silage straw lengths produced by the silage machine.

[0021] Furthermore, the multi-gear is a triple gear; the second gear set includes a first gear, a double gear, and an external gear sleeve. The first gear and the external gear sleeve are both movably mounted on the two intermediate shafts. The external gear sleeve is connected to the input end of the safety clutch, and the first gear meshes with the small end of the triple gear. The double gear is connected to the external gear sleeve, and the double gear can slide along the axial direction of the external gear sleeve to one of the following states:

[0022] In state d, the inner part of the double gear meshes with the hub of the first gear, and the double gear disengages from the triple gear.

[0023] State e: The large end of the double gear meshes with the middle end of the triple gear, the small end of the double gear disengages from the triple gear, and the double gear disengages from the first gear.

[0024] In state f, the small end of the double gear meshes with the large end of the triple gear, the large end of the double gear disengages from the triple gear, and the double gear disengages from the first gear.

[0025] State g: The double gear disengages from the triple gear and the first gear.

[0026] The gears can be switched through the same shift fork, making operation convenient; combined with the first gear set, it realizes six-speed transmission, increasing the variety of silage straw lengths produced by the silage machine; through the double gear, the structure is compact, avoiding structural interference and ensuring reliable transmission.

[0027] Furthermore, the small end of the triple gear is also connected to a low-speed gear, the outer diameter of which is larger than the outer diameter of the large end of the triple gear; wherein:

[0028] Specifically, state a is when the high-gear gear meshes with the large end of the triple gear;

[0029] Specifically, state b is when the low-speed gear meshes with the low-speed gear of the triple gear set;

[0030] Specifically, state c is when both the high-gear and low-gear gears disengage from the multi-gear system.

[0031] This facilitates sufficient deceleration and increases the output torque at low speeds; at the same time, it fully meets the length requirements of the silage straw produced by the silage machine.

[0032] Furthermore, a third transmission gear is connected to the intermediate shaft, and an input gear is connected to the input shaft. The input gear and the third transmission gear are connected by an idler gear transmission.

[0033] It has a compact structure, high transmission efficiency, and good reliability.

[0034] Furthermore, it also includes a cutter output shaft, which is connected to the input shaft via a bevel gear transmission.

[0035] The header output shaft can be used to connect to the header, making it easy to provide power to the header. It has a compact structure and saves the need for a separate header input gearbox. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention.

[0037] Figure 2 This is a schematic diagram of the reverse drive section of the second transmission gear.

[0038] Figure 3 This is a schematic diagram of the first gear set.

[0039] In the accompanying drawings, the technical features represented by each reference numeral are as follows:

[0040] 1-Input shaft; 2-Intermediate shaft 1; 3-First output shaft; 4-Intermediate shaft 2; 5-Safety clutch; 6-Multi-gear; 7-First transmission gear; 8-First output gear; 9-Second output shaft; 10-Second transmission gear; 11-Input reversing shaft; 12-Reversing drive wheel; 13-Intermediate shaft 3; 14-Second output gear; 15-High gear; 16-Low gear; 17-First gear; 18-Double gear; 19-External gear sleeve; 20-Low speed gear; 21-Third transmission gear; 22-Input gear; 23-Cutting table output shaft. Detailed Implementation

[0041] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0042] See also: This invention Figure 1-3 .

[0043] This invention provides a forage machine feeding gearbox, comprising an input shaft 1, an intermediate shaft 2, a first output shaft 3, an intermediate second shaft 4, and a safety clutch 5. The input shaft 1 and the intermediate shaft 2 are connected by gear transmission. A first gear set is connected to the intermediate shaft 2. A multi-gear 6 is movably mounted on the first output shaft 3. A second gear set is movably mounted on the intermediate second shaft 4. Both the first and second gear sets can be driven by the multi-gear 6. The input end of the safety clutch 5 is connected to the second gear set, and the output end of the safety clutch 5 is connected to the intermediate second shaft 4. A first transmission gear 7 is also connected to the intermediate second shaft 4, and a first output gear 8 is also connected to the first output shaft 3. The first output gear 8 meshes with the first transmission gear 7.

[0044] principle:

[0045] Power transmission route: Input shaft 1 → Intermediate shaft 2 → First gear set → Multi-gear 6 → Second gear set → Safety clutch 5 → Intermediate shaft 4 → First transmission gear 7 → First output gear 8 → First output shaft 3. The first output shaft 3 can be used to connect to the feeding module of the silage harvesting machinery, thus providing feeding power. When the feeding module experiences clogging or overload, the safety clutch 5 disengages, cutting off power transmission from the safety clutch 5 to the intermediate shaft 4. The second gear set then idles without load, thus preventing damage to the gears.

[0046] The multi-gear 6 is a structure in which multiple gears of different diameters are connected to each other by a hub to form a single unit. Double gears 18, triple gears, etc., can be used. Taking a triple gear as an example, the three gears of different diameters in a triple gear can be referred to as the large end, middle end, and small end. Other gear sets can be switched to mesh with one of the large end, middle end, or small end to achieve 1-3 gear transmission. In this invention, the first gear set and the multi-gear 6 can achieve the first gear transmission, and the multi-gear 6 and the second gear set can achieve the second gear transmission. The combination of these two transmissions can achieve more than four gear transmissions, thereby enabling the output shaft to drive the feeding module of the silage harvesting machine at multiple speeds, increasing the variety of silage straw lengths produced by the silage harvester.

[0047] Preferably, the movable assembly is specifically connected via bearings. That is, the multi-gear 6 is connected to the first output shaft 3 via bearings, and the second gear set is connected to the intermediate shaft 4 via bearings.

[0048] Note: As can be seen from the subject name "gearbox", the aforementioned shafts and gears are all installed inside the housing (box); since the housing is not related to the technical problem of this invention (power transmission and power cut-off), there is no need to specifically mention the housing in the preceding and following descriptions.

[0049] In summary, by employing this invention, when the feeding module experiences straw blockage or overload, the safety clutch 5 disengages, cutting off the power transmission from the second gear set to the intermediate shaft 4, and allowing the second gear set to idle without load. This avoids gear damage caused by straw blockage or overload, resulting in a long service life and high reliability. Furthermore, the first gear set and the multi-gear 6 can achieve a first-stage speed change, and the multi-gear 6 and the second gear set can achieve a second-stage speed change. Through the combination of these two speed changes, more than four gears can be achieved, increasing the variety of silage straw lengths produced by the silage machine.

[0050] Furthermore, it also includes a second output shaft 9 and a second transmission gear 10, the second output shaft 9 and the second transmission gear 10 being connected by gear transmission, and the second transmission gear 10 being connected by transmission to the first transmission gear 7.

[0051] The second output shaft 9 can be used to connect another feeding module of the silage harvesting machine, which facilitates the simultaneous operation of two feeding modules, occupies little space, enhances the functionality of the silage harvester, and saves on other independent gearbox structures. At the same time, the power of both output shafts is transmitted through the intermediate second shaft 4, and is thus controlled by the safety clutch 5, avoiding gear damage caused by grass blockage or overload, resulting in a long service life and good reliability.

[0052] Furthermore, such as Figure 1 , 2 As shown: It also includes an input reversing shaft 11, on which a reversing drive wheel 12 is connected. When the reversing drive wheel 12 moves along the axial direction of the input reversing shaft 11, it can engage or disengage with the second transmission gear 10.

[0053] Note: The input reverse shaft 11 is used to connect to the reverse drive device to provide reverse power; the reverse drive wheel 12 can be moved axially along the input reverse shaft 11 by the shift fork mechanism. When the safety clutch 5 is engaged, the reverse drive device is turned off, and the reverse drive wheel 12 is disengaged from the second transmission gear 10.

[0054] Preferably, the input reversing shaft 11 can be arranged parallel to the shaft on which the second transmission gear 10 is installed and at the same height, and is located above the intermediate shaft 4.

[0055] When the safety clutch 5 is disengaged, the reverse drive wheel 12 can mesh with the second transmission gear 10, activating the reverse drive device and driving the second transmission gear 10 to rotate in the opposite direction. Power is transmitted to the first output shaft 3 and the second output shaft 9 to rotate in the opposite direction, thereby driving the feeding module of the silage machine to rotate in the opposite direction to discharge the material. This facilitates the quick resolution of clogging and overload problems and improves operating efficiency.

[0056] Furthermore, it also includes an intermediate three-shaft 13, with transmission gears at both ends of the intermediate three-shaft 13. The transmission gear at one end of the intermediate three-shaft 13 meshes with the second transmission gear 10, and the transmission gear at the other end of the intermediate three-shaft 13 meshes with the first transmission gear 7.

[0057] Preferably, the first transmission gear 7 and the second transmission gear 10 are located on opposite sides of the intermediate three shafts 13, and their axes are parallel to each other. The middle part of the intermediate three shafts 13 is connected to the housing via bearings.

[0058] This design allows the second transmission gear 10 to avoid interference with the second speed change gear set on the intermediate shaft 4, resulting in a compact structure.

[0059] Furthermore, a second output gear 14 is also connected to the second output shaft 9, and the second output gear 14 is connected to the second transmission gear 10 through an idler gear transmission.

[0060] It facilitates the transmission of power to the second output shaft 9, has a compact structure, and occupies little space.

[0061] Furthermore, such as Figure 1 , 3 As shown: The first gear set includes a high-gear 15 and a low-gear 16. Both the high-gear 15 and the low-gear 16 are connected to the intermediate shaft 2, and the high-gear 15 and the low-gear 16 can synchronously slide along the axial direction of the intermediate shaft 2 to one of the following states:

[0062] State a: High gear 15 meshes with multi-gear 6, and low gear 16 disengages from multi-gear 6; State b: Low gear 16 meshes with multi-gear 6, and high gear 15 disengages from multi-gear 6; State c: Both high gear 15 and low gear 16 disengage from multi-gear 6.

[0063] Note: State a is the high-speed gear, corresponding to the second gear set gears high-speed first, high-speed second, high-speed third, etc. State B is the low-speed gear, corresponding to the second gear set gears low-speed first, low-speed second, low-speed third, etc. State c is the shift transition state or neutral. A single shift fork mechanism can simultaneously connect the high-speed gear 15 and the low-speed gear 16, driving them to slide synchronously axially.

[0064] Note: Both the high-gear 15 and the low-gear 16 are connected to the intermediate shaft 2. Preferably, they can be connected by spline or by internal and external gear meshing.

[0065] It facilitates switching between high and low speed gears, increases the gearing effect of the second gear set, and increases the variety of silage straw lengths produced by the silage machine.

[0066] Furthermore, such as Figure 1 As shown: The multi-gear 6 is a triple gear; the second gear set includes a first gear 17, a double gear 18, and an external gear sleeve 19. The first gear 17 and the external gear sleeve 19 are both movably mounted on the intermediate second shaft 4. The external gear sleeve 19 is connected to the input end of the safety clutch 5, and the first gear 17 meshes with the small end of the triple gear. The double gear 18 is connected to the external gear sleeve 19, and the double gear 18 can slide along the axial direction of the external gear sleeve 19 to one of the following states:

[0067] In state d, the inner part of the double gear 18 meshes with the hub part of the first gear 17, and the double gear 18 disengages from the triple gear.

[0068] In state e, the large end of the double gear 18 meshes with the middle end of the triple gear, the small end of the double gear 18 disengages from the triple gear, and the double gear 18 disengages from the first gear 17.

[0069] In state f, the small end of the double gear 18 meshes with the large end of the triple gear, the large end of the double gear 18 disengages from the triple gear, and the double gear 18 disengages from the first gear 17.

[0070] In state g, the double gear 18 disengages from the triple gear and the first gear 17.

[0071] Preferably, the first gear 17 and the outer gear sleeve 19 are connected to the intermediate second shaft 4 via bearings.

[0072] Note: State d is first gear, power transmission route: multi-gear 6 → first gear 17 → double gear 18 → outer gear sleeve 19. State e is second gear, power transmission route: middle end of multi-gear 6 → large end of double gear 18 → outer gear sleeve 19. State f is third gear, power transmission route: large end of multi-gear 6 → small end of double gear 18 → outer gear sleeve 19. State g is neutral or a transitional gear shift state. The double gear 18 can be moved axially along the outer gear sleeve 19 using the same shift fork mechanism.

[0073] Note: The double gear 18 is connected to the external gear sleeve 19, preferably by spline connection or internal and external gear meshing. The above-mentioned large end, middle end, and small end specifically refer to the large gear, middle gear, and small gear in the triple gear or double gear 18 to which it belongs.

[0074] The gears can be switched through the same shift fork structure, making operation convenient; combined with the first gear set, it realizes six-speed transmission, increasing the variety of silage straw lengths produced by the silage machine; through the double gear 18, the structure is compact, avoiding structural interference and ensuring reliable transmission.

[0075] Furthermore, the small end of the triple gear is also connected to a low-speed gear 20, the outer diameter of which is larger than the outer diameter of the large end of the triple gear; wherein:

[0076] Specifically, state a is when the high-gear 15 meshes with the large end of the triple gear;

[0077] Specifically, state b is when the low-speed gear 16 meshes with the low-speed gear 20 of the triple gear set;

[0078] Specifically, state c means that both the high-gear 15 and the low-gear 16 are disengaged from the multi-gear 6.

[0079] This facilitates sufficient deceleration and increases the output torque at low speeds; at the same time, it fully meets the length requirements of the silage straw produced by the silage machine.

[0080] Furthermore, a third transmission gear 21 is connected to the intermediate shaft 2, and an input gear 22 is connected to the input shaft 1. The input gear 22 and the third transmission gear 21 are connected by an idler gear transmission.

[0081] It has a compact structure, high transmission efficiency, and good reliability.

[0082] Furthermore, it also includes a cutter output shaft 23, which is connected to the input shaft 1 via a bevel gear transmission.

[0083] Note: In the bevel gear pair, one bevel gear is fixed on the output shaft 23 of the cutter, and the other bevel gear is fixed on one end of the input shaft 1, thereby realizing transmission.

[0084] The header output shaft 23 can be used to connect to the header, making it easy to provide power to the header. It has a compact structure and saves the need for a separate header input gearbox.

[0085] In the description of this invention, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this invention and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0086] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0087] In this invention, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this invention can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0088] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application.

Claims

1. A feeding gearbox for a silage harvester, characterized in that: The system includes an input shaft (1), an intermediate shaft (2), a first output shaft (3), an intermediate second shaft (4), and a safety clutch (5). The input shaft (1) and the intermediate shaft (2) are connected by gear transmission. A first gear set is connected to the intermediate shaft (2). A multi-gear set (6) is movably mounted on the first output shaft (3). A second gear set is movably mounted on the intermediate second shaft (4). Both the first and second gear sets can be connected to the multi-gear set (6) for transmission. The input end of the safety clutch (5) is connected to the second gear set, and the output end of the safety clutch (5) is connected to the intermediate second shaft (4). A first transmission gear (7) is also connected to the intermediate second shaft (4), and a first output gear (8) is also connected to the first output shaft (3). The first output gear (8) meshes with the first transmission gear (7). The first gear set includes a high-gear gear (15) and a low-gear gear (16). Both the high-gear gear (15) and the low-gear gear (16) are connected to the intermediate shaft (2), and the high-gear gear (15) and the low-gear gear (16) can slide synchronously along the axial direction of the intermediate shaft (2) to one of the following states: State a: The high gear (15) meshes with the multi-gear (6), and the low gear (16) disengages from the multi-gear (6). State b: The low gear (16) meshes with the multi-gear (6), and the high gear (15) disengages from the multi-gear (6). In state c, both the high gear (15) and the low gear (16) disengage from the multi-gear (6).

2. The forage machine feeding gearbox according to claim 1, characterized in that: It also includes a second output shaft (9) and a second transmission gear (10), the second output shaft (9) and the second transmission gear (10) are connected by gear transmission, and the second transmission gear (10) is connected by transmission to the first transmission gear (7).

3. The forage machine feeding gearbox according to claim 2, characterized in that: It also includes an input reversing shaft (11), on which a reversing drive wheel (12) is connected. When the reversing drive wheel (12) moves along the axial direction of the input reversing shaft (11), it can engage or disengage with the second transmission gear (10).

4. The forage machine feeding gearbox according to claim 2, characterized in that: It also includes a three-axis intermediate shaft (13), with transmission gears at both ends of the three-axis intermediate shaft (13). The transmission gear at one end of the three-axis intermediate shaft (13) meshes with the second transmission gear (10), and the transmission gear at the other end of the three-axis intermediate shaft (13) meshes with the first transmission gear (7).

5. The forage machine feeding gearbox according to claim 2, characterized in that: The second output shaft (9) is also connected to a second output gear (14), and the second output gear (14) and the second transmission gear (10) are connected by an idler gear transmission.

6. The forage machine feeding gearbox according to claim 1, characterized in that: The multi-gear (6) is a triple gear; the second gear set includes a first gear (17), a double gear (18), and an outer gear sleeve (19). The first gear (17) and the outer gear sleeve (19) are both movably mounted on the intermediate two shafts (4). The outer gear sleeve (19) is connected to the input end of the safety clutch (5). The first gear (17) meshes with the small end of the triple gear. The double gear (18) is connected to the outer gear sleeve (19), and the double gear (18) can slide along the axial direction of the outer gear sleeve (19) to one of the following states: In state d, the inner part of the double gear (18) meshes with the hub part of the first gear (17), and the double gear (18) disengages from the triple gear. In state e, the large end of the double gear (18) meshes with the middle end of the triple gear, the small end of the double gear (18) disengages from the triple gear, and the double gear (18) disengages from the first gear (17). In state f, the small end of the double gear (18) meshes with the large end of the triple gear, the large end of the double gear (18) disengages from the triple gear, and the double gear (18) disengages from the first gear (17). State g, double gear (18) disengages from triple gear and first gear (17).

7. The forage machine feeding gearbox according to claim 6, characterized in that: The small end of the triple gear is also connected to a low-speed gear (20), the outer diameter of which is larger than the outer diameter of the large end of the triple gear; wherein: Specifically, state a is that the high-gear (15) meshes with the large end of the triple gear; Specifically, state b is that the low gear (16) meshes with the low speed gear (20) of the triple gear; Specifically, state c is when both the high gear (15) and the low gear (16) disengage from the multi-gear (6).

8. The forage machine feeding gearbox according to claim 1, characterized in that: A third transmission gear (21) is connected to the intermediate shaft (2), and an input gear (22) is connected to the input shaft (1). The input gear (22) and the third transmission gear (21) are connected by an idler gear transmission.

9. The forage machine feeding gearbox according to claim 1, characterized in that: It also includes a cutter output shaft (23), which is connected to the input shaft (1) by a bevel gear transmission.

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