A cotton picker clutch and brake combination

Abstract

The application discloses a cotton picker clutch and brake combination device, adopts an integrated method, integrates the structure together, optimizes the space layout, saves the development cost, simultaneously integrates the design of the clutch outer hub, makes it bear the gear shifting function of the clutch and the brake function of the brake, reduces and optimizes the development and processing cost of the whole transmission, simultaneously, due to the compact design structure and the overall layout convenience, the oil lubrication function is more easily realized, the risk of oil leakage is reduced. The whole structure promotes the serial development process of the brake group and the clutch group, provides different angles and ideas for the improvement of the overall operation efficiency of the transmission and the reduction of the cost, adopts the oil sleeve mode to send the oil from the valve plate to the inside of the brake, and the sealing ring guarantees that there is no risk of oil leakage, so that the serial design of the brake group and the clutch group is realized.

Description

Technical Field

[0001] This invention belongs to the field of transmission technology, specifically a combination device for a cotton harvester clutch and brake. Background Technology

[0002] The agricultural machinery market is expanding, with more and more domestically produced agricultural machinery appearing on the market. As a result, customers' requirements for equipment are also increasing, including shifting comfort, ease of installation, as well as requirements for equipment size and fuel consumption.

[0003] The brake and clutch assemblies, which are used inside the cotton harvester's transmission to achieve braking and shifting functions, also need to be modified according to the specific design of the cotton harvester. Common hydraulic transmissions typically design their internal clutches and brakes in an axial layout.

[0004] However, due to space limitations and functional requirements, the traditional brake assembly and clutch assembly of cotton harvester gearboxes suffer from insufficient space and high processing costs, necessitating certain modifications. Furthermore, the traditional brake assembly and clutch assembly pose a high risk of oil leakage. Summary of the Invention

[0005] The present invention provides a combination device for a cotton harvester clutch and brake, which solves the problems of insufficient space and high processing cost caused by the cooperation between the traditional brake assembly and clutch assembly in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A clutch and brake assembly for a cotton harvester includes an input shaft, an inner clutch hub connected to the input shaft, an outer clutch hub connected to the inner clutch hub, a clutch friction plate assembly and a clutch mating plate assembly disposed between the inner and outer clutch hubs, a planetary carrier connected to the outer clutch hub, and a brake also connected to the outer clutch hub. A brake friction plate assembly and a brake mating plate assembly are disposed between the brake and the outer clutch hub. A brake housing is disposed outside the brake and is fixed to a valve plate seat.

[0008] Preferably, the clutch inner hub includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are integrally formed, the diameter of the first connecting part is larger than the diameter of the second connecting part, the second connecting part is disposed outside the first connecting part, the outer wall of the first connecting part is provided with evenly distributed splines, and an oil passage hole is provided through the first connecting part.

[0009] Preferably, a sealing ring groove is provided on the outer wall of the second connecting part, an oil passage is provided through the second connecting part, and a square keyway is provided on the inner wall of the second connecting part.

[0010] Preferably, the clutch outer hub includes a third connecting part and a fourth connecting part, which are integrally formed. The fourth connecting part is located at the center of the third connecting part. The third connecting part is provided with evenly distributed mating plate grooves. A friction plate groove is provided on the outer wall of the third connecting part between the two mating plate grooves. The side wall of the third connecting part has a partial protrusion with a connecting hole. An oil filling port is provided at the bottom of the third connecting part.

[0011] Preferably, one side of the fourth connecting part is inside the third connecting part, and the other side is outside the third connecting part. A first retaining ring groove is provided on the outer wall of the fourth connecting part inside the third connecting part, and a third sealing ring groove, a fourth sealing ring groove, a rear oil groove, and an oil outlet are provided on the outer wall of the fourth connecting part outside the third connecting part.

[0012] Preferably, an oil groove is provided on the outer wall of the fourth connecting part located outside the third connecting part.

[0013] Preferably, the brake housing includes a fifth connecting part and a sixth connecting part, the fifth connecting part and the sixth connecting part are integrally formed, the diameter of the fifth connecting part is larger than the diameter of the sixth connecting part, the fifth connecting part is disposed inside the sixth connecting part, a connecting hole is provided at the top of the side wall of the fifth connecting part, a second mating plate groove is provided on the side wall of the fifth connecting part, and a second connecting hole, an oil sleeve and an oil hole are provided at the bottom of the fifth connecting part.

[0014] Preferably, a second retaining ring groove is provided on the side wall of the sixth connecting part.

[0015] Preferably, the oil hole does not completely penetrate the fifth connecting part.

[0016] Preferably, the clutch inner hub and the input shaft are interference-fitted, and the clutch inner hub is fixed to the input shaft by a square key.

[0017] Compared with existing technologies, this invention has the following beneficial effects: This invention provides a combined clutch and brake device for a cotton harvester, employing an integrated approach to combine their structures, optimizing spatial layout and saving development costs. Simultaneously, the clutch outer hub is integrated into the design, enabling it to perform both the clutch's shifting function and the brake's braking function, thus reducing and optimizing the development and processing costs of the entire transmission. Furthermore, the compact structure and convenient overall layout of this design facilitate oil lubrication, reducing the risk of oil leakage. This entire structure promotes the serialization of brake and clutch assembly development, providing different perspectives and approaches for improving the overall operating efficiency and reducing the cost of the transmission.

[0018] Furthermore, an oil sleeve is used to deliver oil from the valve plate into the brake. The sealing ring ensures that there is no risk of oil leakage. Different inner diameters of the oil sleeve can determine the amount of oil flow, which facilitates the serialized design of brake and clutch assemblies.

[0019] Furthermore, the use of an oil-collecting groove at the brake outlet avoids the problem of difficult oil passage processing due to insufficient space, and ensures that the oil can smoothly reach the clutch piston chamber from the valve plate, thus solving the drilling problem in the process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the working principle of a combination device for a cotton harvester clutch and brake according to the present invention.

[0021] Figure 2 This is a structural diagram of the clutch inner hub of the present invention, where a is a side view and b is another perspective view;

[0022] Figure 3 This is a structural diagram of the clutch outer hub of the present invention, where a is the front view and b is the side view;

[0023] Figure 4 This is a structural diagram of the brake housing of the present invention, where a is the front view and b is the rear view;

[0024] Figure 5 This is a cross-sectional view of the oil passage of a combination device for a cotton harvester clutch and brake according to the present invention;

[0025] Figure 6 This is a second sectional view of the oil passage of a cotton harvester clutch and brake combination device according to the present invention;

[0026] Wherein, 1-input shaft, 2-clutch inner hub, 3-clutch outer hub, 4-clutch friction plate assembly, 5-clutch mating plate assembly, 6-planetary carrier, 7-brake, 8-brake friction plate assembly, 9-brake mating plate assembly, 10-brake housing, 11-valve plate seat, 12-spline, 13-oil passage hole, 14-oil passage, 15-square keyway, 16-matting plate groove, 17-friction plate groove, 18-oil filling port, 19-first retaining ring groove, 20-third sealing ring groove, 21-… - Rear end oil groove, 22- Connecting hole, 23- Second mating plate groove, 24- Second connecting hole, 25- Oil sleeve, 26- Oil hole, 27- Second retaining ring groove, 28- Square key, 29- Transmission housing, 30- Hydraulic valve assembly, 31- Mating hole, 32- First sealing ring groove, 33- Second sealing ring groove, 34- Bolt hole, 35- Locating pin hole, 36- Fourth sealing ring groove, 37- Oil outlet hole, 38- Bearing mating surface, 39- Thrust washer step, 40- Step. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0033] like Figure 1 As shown, the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0034] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0035] The clutch inner hub 2 includes a first connecting part and a second connecting part, which are integrally formed. The diameter of the first connecting part is larger than the diameter of the second connecting part, and the second connecting part is disposed outside the first connecting part.

[0036] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0037] The clutch inner hub 2 includes a first connecting part and a second connecting part, which are integrally formed. The diameter of the first connecting part is larger than the diameter of the second connecting part, and the second connecting part is disposed outside the first connecting part.

[0038] The first connecting part has evenly distributed splines 12 on its outer wall, and an oil passage 13 is provided through the first connecting part. The second connecting part has a sealing ring groove on its outer wall, an oil passage 14 is provided through the second connecting part, and a square keyway 15 is provided on the inner wall of the second connecting part.

[0039] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0040] The clutch outer hub 3 includes a third connecting part and a fourth connecting part, which are integrally formed, and the fourth connecting part is located at the center of the third connecting part.

[0041] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0042] The clutch outer hub 3 includes a third connecting part and a fourth connecting part, which are integrally formed, and the fourth connecting part is located at the center of the third connecting part.

[0043] The third connecting part is provided with evenly distributed mating plate grooves 16, and a friction plate groove 17 is provided on the outer wall of the third connecting part between two mating plate grooves 16. The side wall of the third connecting part has a partial protrusion, and a connecting hole is provided on the protrusion. An oil filling port 18 is provided at the bottom of the third connecting part. One side of the fourth connecting part is inside the third connecting part, and the other side is outside the third connecting part. A first retaining ring groove 19 is provided on the outer wall of the fourth connecting part inside the third connecting part. A third sealing ring groove 20, a fourth sealing ring groove 36, a rear oil groove 21, and an oil outlet hole 37 are provided on the outer wall of the fourth connecting part outside the third connecting part.

[0044] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0045] The third connecting part is provided with evenly distributed mating plate grooves 16. A friction plate groove 17 is provided on the outer wall of the third connecting part between two mating plate grooves 16. A portion of the side wall of the third connecting part has a protrusion with a connecting hole. An oil filling port 18 is provided at the bottom of the third connecting part. One side of the fourth connecting part is inside the third connecting part, and the other side is outside the third connecting part. A first retaining ring groove 19 is provided on the outer wall of the fourth connecting part inside the third connecting part. A third sealing ring groove 20, a fourth sealing ring groove 36, a rear oil groove 21, and an oil outlet 37 are provided on the outer wall of the fourth connecting part outside the third connecting part.

[0046] The clutch outer hub 3 includes a third connecting part and a fourth connecting part, which are integrally formed, and the fourth connecting part is located at the center of the third connecting part.

[0047] An oil groove is provided on the outer wall of the fourth connecting part, which is located outside the third connecting part.

[0048] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0049] The brake housing 10 includes a fifth connecting portion and a sixth connecting portion, which are integrally formed. The diameter of the fifth connecting portion is larger than the diameter of the sixth connecting portion, and the fifth connecting portion is disposed inside the sixth connecting portion.

[0050] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0051] The brake housing 10 includes a fifth connecting portion and a sixth connecting portion, which are integrally formed. The diameter of the fifth connecting portion is larger than the diameter of the sixth connecting portion, and the fifth connecting portion is disposed inside the sixth connecting portion.

[0052] The fifth connecting part has a connecting hole 22 at the top of its side wall, a second mating plate groove 23 on its side wall, a second connecting hole 24, an oil sleeve 25, and an oil hole 26 at its bottom, and a second retaining ring groove 27 on its side wall.

[0053] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0054] The brake housing 10 includes a fifth connecting portion and a sixth connecting portion, which are integrally formed. The diameter of the fifth connecting portion is larger than the diameter of the sixth connecting portion, and the fifth connecting portion is disposed inside the sixth connecting portion.

[0055] The oil hole 26 does not completely penetrate the fifth connecting part.

[0056] Another embodiment of the present invention provides a combination device for a cotton harvester clutch and brake, including an input shaft 1, a clutch inner hub 2 connected to the input shaft 1, a clutch outer hub 3 connected to the clutch inner hub 2, a clutch friction plate group 4 and a clutch mating plate group 5 disposed between the clutch inner hub 2 and the clutch outer hub 3, a planetary carrier 6 connected to the clutch outer hub 3, a brake 7 also connected to the clutch outer hub 3, a brake friction plate group 8 and a brake mating plate group 9 disposed between the brake 7 and the clutch outer hub 3, a brake housing 10 disposed outside the brake 7, and the brake housing 10 fixed on a valve plate seat 11.

[0057] The clutch inner hub 2 and the input shaft 1 are interference-fitted, and the clutch inner hub 2 is fixed to the input shaft by a square key 28.

[0058] The purpose of this invention is to solve the problem that the traditional hydraulic automatic transmission has a long internal brake assembly and clutch assembly space layout, resulting in a large transmission volume; at the same time, the structure of the clutch outer hub 3 is optimized, changing the design of the clutch outer hub 3 which only has the single function of shifting gears, thus promoting the low-cost and serialized development of the brake assembly and clutch assembly of the cotton harvester transmission.

[0059] The following is a detailed description of the invention:

[0060] Working principle:

[0061] The working principle of the internal brake 7 and clutch assembly of the cotton harvester's gearbox is as follows: The clutch inner hub 2 and the input shaft 1 are fixed together by an interference fit using a square key 28. When the input shaft 1 rotates, the clutch inner hub 2 rotates at the same speed. Simultaneously, the clutch inner hub 2, in conjunction with the friction plates and mating plates, transmits torque to the clutch outer hub 3. At this time, the piston oil chamber inside the clutch outer hub 3 is filled with oil. The piston presses the friction plates and mating plates together, causing the clutch outer hub 3 to rotate at the same speed as the clutch inner hub 2, outputting torque and speed to one end of the planetary carrier 6 connected to the clutch outer hub 3. The brake housing 10 is fixed to the valve plate seat 11 by bolts, and then to the gearbox housing 29. The clutch outer hub 3 and the brake 7 friction plates cooperate. With the piston oil chamber inside the brake 7 filled with oil, the brake 7 piston presses the friction plates and mating plates together, causing the speed of the clutch outer hub 3 to decrease until it stops rotating completely, thus achieving the braking function. The specific structure is as follows: Figure 1 .

[0062] exist Figure 1 As can be seen, the clutch inner hub 2 and the input shaft 1 are press-fitted and fixed. The clutch friction plates and mating plates respectively cooperate with the clutch inner hub 2 and the clutch outer hub 3, so that the clutch outer hub 3 can rotate at the same speed as the input shaft 1 when the piston is pressed. At the same time, the clutch outer hub 3 and the brake housing 10 respectively cooperate with the brake friction plates and mating plates, so that when the piston inside the brake 7 is pressed, the speed of the clutch outer hub 3 is reduced to zero, realizing the braking function. It can also be seen that the brake housing 10 and the clutch outer hub 3 achieve their function through bearing contact. There are two oil filling passages between the brake housing 10 and the valve plate seat 11 connected to the transmission housing 29: one of them fills the piston chamber inside the brake 7 with oil to achieve the braking effect, and the other oil passage enters the clutch outer hub 3 through the brake housing 10, and finally fills the piston chamber of the clutch outer hub 3 with oil to achieve the shifting function. In addition, there is also an oil passage inside the clutch outer hub 3 that connects to the oil passage inside the input shaft 1 to lubricate the bearing. Meanwhile, the oil passage inside the input shaft 1 is also connected to the oil passage 14 of the clutch inner hub 2, which is used to supply oil to the planetary carrier 6. Ultimately, this achieves the functions of braking and output speed.

[0063] Specific parts

[0064] Clutch inner hub 2

[0065] The specific structure of the clutch inner hub 2 is as follows: Figure 2 As shown, 31 is a hole that mates with the input shaft 1. Both are press-fitted to install the clutch inner hub 2 onto the input shaft 1. 15 is a square keyway 15. To ensure easy installation, the square key 28 uses a transition fit with the input shaft 1 and a clearance fit with the clutch inner hub 2. This minimizes resistance when pressing in the clutch outer hub 3, improving assembly efficiency. Simultaneously, the bottom of the square keyway 15 is cleaned to reduce stress concentration, prevent damage during operation, and reduce failure rate. 14 is an oil passage used to deliver oil from inside the input shaft 1 to the planetary carrier 6 for lubrication. 32 and 33 are both rotary seal grooves to prevent oil leakage from both sides during operation, thus preventing insufficient lubrication flow. 12 is an external spline that mates with the clutch friction plate, transmitting torque to the clutch outer hub 3 when the clutch piston is engaged, thus achieving speed output. 13 is an oil passage hole. In order to deliver oil from the inner cavity of the clutch inner hub 2 to the friction plates and mating plates for cooling, it can be seen that there are 6 oil passage holes 13 evenly distributed in three groups to ensure the flow of cooling oil. At the same time, the teeth of spline 12 are removed at the location of oil passage hole 13 to prevent the spline 12 teeth from being too thin after drilling, which would cause them to break and fail.

[0066] Clutch outer hub 3

[0067] The specific structure of the clutch outer hub 3 is as follows Figure 3As shown, based on the function of the clutch outer hub 3, we can see that 35 is a bolt hole connecting to the planetary carrier 6, and 36 is a locating pin hole 35 connecting to the planetary carrier 6. 35 and 36 work together to connect the clutch outer hub 3 and the planetary carrier 6. When the clutch outer hub 3 rotates, the planetary carrier 6 also rotates at the same speed, outputting its rotational speed. 16 is a groove that mates with the clutch mating plates, with six evenly distributed grooves. When the clutch friction plates and mating plates are pressed together, they drive the clutch outer hub 3 and the clutch inner hub 2 to rotate at the same speed. 17 is a groove that mates with the brake friction plates, also with six evenly distributed grooves. When the brake friction plates and mating plates are pressed together, the rotational speed of the clutch outer hub 3 is reduced to zero, achieving the braking function. To avoid interference, the grooves for mating plates and friction plates are staggered, ensuring functionality while saving materials and space. 19 is a retaining ring groove. A retaining ring is installed here to prevent the disc spring from dislodging, ensuring smooth piston return. 18 is the piston chamber oil filling port, which connects to the rear oil inlet of the clutch outer hub 3, forming an oil filling passage. Oil from the brake housing 10 fills the piston chamber, ultimately pressing the friction plates and mating plates together. 34 is a machined step section, dividing the outer surface into two parts. The smaller radius surface is used to mount the disc spring, requiring lower surface precision and only rough machining is needed. The larger radius surface is the piston chamber sealing surface, which contacts and has relative displacement with the sealing ring, requiring higher precision. This stepped design reduces machining costs, eliminating the need for finishing the entire surface and improving yield. 37 is the bearing lubrication outlet, where oil passage 14 corresponds to the input shaft 1 oil passage 14, allowing oil to lubricate the bearing from the outlet. 20 and 36 are rotating sealing ring grooves, both designed to ensure sealing and prevent oil leakage from both sides. Part 21 is the rear oil groove, used to collect oil from the brake housing 10, which flows through oil passage 14 to the piston chamber, enabling the shifting function. 38 is the bearing mating surface. High dimensional accuracy is required here to ensure proper bearing installation. 39 is the step for mounting a thrust washer. This washer is used to prevent direct contact between the bearing and the end face, thus reducing wear during relative rotation and improving efficiency. It can be seen that this design integrates the functions of the clutch outer hub 3. In general designs, the clutch and brake 7 are axially arranged, with the clutch hub and brake housing 10 respectively mating with corresponding mating plates. Their functions are achieved by the internal piston pressing against the friction plates and mating plate groups. There is usually no commonality or overlap between the two. However, this conventional design leads to an increased transmission size. To optimize the spatial layout, this design takes a radial approach, using an integrated and nested method. The clutch outer hub 3 is used as an intermediate part, compactly arranging the clutch assembly and brake assembly together. This optimizes the structure, reduces space waste, promotes the serialization of clutch and brake assembly designs within cotton harvester transmissions, and also improves the universality of cotton harvester transmissions.

[0068] Brake housing 10

[0069] The brake housing 10 in this design mainly performs the braking function, and its specific structure is as follows: Figure 4 22 is the front bolt hole, mainly used for connection and fixation with the brake cover plate, so that the friction pads and mating pads are pressed against the cover plate. 23 is the groove for mating pads, used to place the brake 7 mating pads, pressing the friction pads and mating pads together when the piston chamber is filled with oil. 27 is the retaining ring groove, used to prevent the disc spring from dislodging during operation and to achieve the spring return function. 40 is a stepped machining design, dividing this surface into two parts. The surface with a smaller radius needs to accommodate the disc spring and does not require high precision, while the surface with a larger radius needs relative displacement with the sealing ring and requires precision machining. This structure can reduce machining costs. 24 is the bolt hole, used to fix the brake housing 10 to the valve plate seat 11, and then to the transmission housing 29 through the valve plate seat 11. Due to the spatial layout to avoid adjacent parts, a uniform distribution method was not adopted. 25 is the oil passage 14 that connects to the piston chamber. Due to the design layout of the valve plate module, an oil sleeve 25 is used here to assist in the oil passage function. The smaller radius end of the oil sleeve 25 is hammered into the hole. Since the other end of the oil sleeve 25 has a sealing ring to achieve a sealing effect, the oil coming from one end of the valve plate can enter the piston chamber through the inner hole of the oil sleeve 25, and finally achieve the oil filling function. 26 is another oil hole, its function is to deliver the oil from the valve plate through the brake housing 10 to the piston chamber of the clutch outer hub 3 to achieve the oil filling function. It can be seen that the oil outlet here is machined into the shape of an oil-gathering groove, rather than being a direct drilled hole. This is due to the spatial layout constraints of the brake housing 10. This oil hole first needs to use an oil sleeve 25 to achieve the oil inlet function. Since the oil sleeve 25 needs to ensure the pressing depth, the depth of this hole must not be less than the pressing depth of the oil sleeve 25. At the same time, since the position corresponding to the oil outlet is restricted by the corresponding oil port of the clutch outer hub 3, it cannot move axially. Therefore, the oil passage 14 needs to be machined at a large tilt angle. From a process manufacturing perspective, the drilling angle here is limited by the hole of the oil sleeve 25 and cannot be too large, so it is impossible to directly achieve its goal. Therefore, the only option is to machine an oil-gathering groove at the oil outlet to avoid machining problems. This approach not only solves the machining difficulties and reduces machining costs, but also ensures a compact part layout and saves space.

[0070] Part Three: Structural Installation Process

[0071] First, install the sealing ring onto the brake 7 piston. Then, install the internal parts of the brake 7 in the order of brake 7 piston – disc spring – retaining ring. Next, fix the brake housing 10 to the valve plate seat 11 with bolts, and then fix it to the gearbox housing. Then, place the brake friction plates and mating plates into the brake housing 10 in sequence, and fix the brake cover plate with bolts. Next, install the internal parts onto the clutch outer hub 3 in the order of clutch piston – disc spring – retaining ring. Then, place the bearing between the brake housing 10 and the clutch outer hub 3, and install the clutch outer hub 3 in place. Then, place the clutch friction plates and mating plates in place in sequence, and press the square key 28 into the square keyway 15 of the input shaft 1. Press the clutch inner hub 2 and the input shaft 1 together, and then place the whole assembly into the installed clutch outer hub 3. Finally, align the planetary carrier 6 with the bolt holes of the clutch outer hub 3, and then fix the two together with bolts. This completes the installation of the entire structure.

[0072] The beneficial effects of this invention are:

[0073] 1. The outer hub 3 of the clutch incorporates an inner and outer groove design, which mates with both the clutch mating plates and the brake friction plates. This allows it to perform both the gear shifting function of the clutch and the braking function, optimizing the structure, reducing wasted space, and resulting in a compact layout.

[0074] 2. The oil from the valve plate is delivered to the brake 7 through the oil sleeve 25. The sealing ring ensures that there is no risk of oil leakage. Different inner diameters of the oil sleeve 25 can determine the amount of oil flow, which facilitates the serial design of brake and clutch assemblies.

[0075] 3. The oil outlet of brake 7 is machined with an oil groove, which avoids the problem of machining oil passage 14 due to insufficient space, and ensures that the oil can smoothly reach the clutch piston chamber from the valve plate, thus solving the drilling problem in the process.

[0076] Although embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, guided by the specification, can make many other modifications without departing from the scope of the claims of the present invention, and all of these modifications are within the scope of protection of the present invention.

Claims

1. A combination device for a cotton harvester's clutch and brake, characterized in that, Includes an input shaft (1), on which a clutch inner hub (2) is connected, and on which a clutch outer hub (3) is connected, between which a clutch friction plate group (4) and a clutch mating plate group (5) are arranged, on which a planetary carrier (6) is connected, and on which a brake (7) is also connected, between which a brake friction plate group (8) and a brake mating plate group (9) are arranged, and on which a brake housing (10) is provided outside the brake (7), and the brake housing (10) is fixed on a valve plate seat (11); The brake housing (10) includes a fifth connecting part and a sixth connecting part. The fifth connecting part and the sixth connecting part are integrally formed. The diameter of the fifth connecting part is larger than that of the sixth connecting part. The fifth connecting part is located inside the sixth connecting part. A connecting hole (22) is provided at the top of the side wall of the fifth connecting part. A second mating plate groove (23) is provided on the side wall of the fifth connecting part. A second connecting hole (24), an oil sleeve (25), and an oil hole (26) are provided at the bottom of the fifth connecting part.

2. The combination device of clutch and brake for a cotton harvester according to claim 1, characterized in that, The clutch inner hub (2) includes a first connecting part and a second connecting part, which are integrally formed. The diameter of the first connecting part is larger than that of the second connecting part. The second connecting part is located outside the first connecting part. The outer wall of the first connecting part is provided with evenly distributed splines (12). An oil passage hole (13) is provided through the first connecting part.

3. The combination device of clutch and brake for a cotton harvester according to claim 2, characterized in that, A sealing ring groove is provided on the outer wall of the second connecting part, an oil passage (14) is provided through the second connecting part, and a square keyway (15) is provided on the inner wall of the second connecting part.

4. The combination device of clutch and brake for a cotton harvester according to claim 1, characterized in that, The clutch outer hub (3) includes a third connecting part and a fourth connecting part, which are integrally formed. The fourth connecting part is located at the center of the third connecting part. The third connecting part is provided with evenly distributed mating plate grooves (16). The outer wall of the third connecting part between the two mating plate grooves (16) is provided with a friction plate groove (17). The side wall of the third connecting part has a partial protrusion, and the protrusion is provided with a connecting hole. The bottom of the third connecting part is provided with an oil filling port (18).

5. The combination device of clutch and brake for a cotton harvester according to claim 4, characterized in that, The fourth connecting part is located on one side inside the third connecting part and on the other side outside the third connecting part. The outer wall of the fourth connecting part located inside the third connecting part is provided with a first retaining ring groove (19), and the outer wall of the fourth connecting part located outside the third connecting part is provided with a third sealing ring groove (20), a fourth sealing ring groove (36), a rear oil groove (21), and an oil outlet (37).

6. The combination device of clutch and brake for a cotton harvester according to claim 5, characterized in that, An oil groove is provided on the outer wall of the fourth connecting part, which is located outside the third connecting part.

7. The combination device of clutch and brake for a cotton harvester according to claim 1, characterized in that, A second retaining ring groove (27) is provided on the side wall of the sixth connecting part.

8. The combination device of clutch and brake for a cotton harvester according to claim 1, characterized in that, The oil hole (26) does not completely penetrate the fifth connection.

9. A combination device for a cotton harvester clutch and brake according to claim 1, characterized in that, The clutch inner hub (2) and the input shaft (1) are interference-fitted, and the clutch inner hub (2) is fixed together with the input shaft by a square key (28).

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