Transmission and Transmission

Abstract

The present invention relates to a transmission device and a transmission, wherein the transmission device comprises a base, a rotating body, a first transmission mechanism, a second transmission mechanism and an intermediate transmission mechanism, the rotating body can rotate relative to the base, the first transmission mechanism can be selectively connected or disconnected with the base, a part of the second transmission mechanism can be selectively connected or disconnected with the base, and the intermediate transmission mechanism is arranged between the first transmission mechanism and the second transmission mechanism; when the first transmission mechanism is connected to the base and a part of the second transmission mechanism is disconnected from the base, the power obtained by the rotating body under the limiting action of the first transmission mechanism and the intermediate transmission mechanism is output through the second transmission mechanism, and when the first transmission mechanism is disconnected from the base and a part of the second transmission mechanism is connected to the base, the power obtained by the rotating body is transmitted to the first transmission mechanism and the intermediate transmission mechanism through the second transmission mechanism and output through the first transmission mechanism and the intermediate transmission mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission mechanisms, and in particular to a transmission device and a speed changer. Background Art

[0002] With the rapid development of society, people have more and more requirements on machine functions and higher and higher performance requirements. Planetary gear transmission is a transmission form currently widely used in various industrial fields.

[0003] Traditional planetary gear trains have low integration, high cost, complex structure and short service life. In the application of traditional planetary gear reducers and planetary gear transmissions, planetary gear trains are gear mechanisms with single-axis input and single-axis output, which can only achieve a single input and a single output, are suitable for one machine, cannot be modularized, and have poor universal performance.

[0004] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a transmission device and a transmission that can adapt to more working conditions.

[0006] To achieve the above object, the present invention provides a transmission device, comprising:

[0007] matrix;

[0008] a first transmission mechanism, selectively connectable or disconnectable to the base body;

[0009] A second transmission mechanism selectively connectable to or disconnectable from the base; and

[0010] An intermediate transmission mechanism, arranged between the first transmission mechanism and the second transmission mechanism;

[0011] Among them, the first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism are configured as follows: when the first transmission mechanism is connected to the base and the second transmission mechanism is disconnected from the base, the power of the base is transmitted to the second transmission mechanism through the first transmission mechanism and the intermediate transmission mechanism and output through the second transmission mechanism; and when the first transmission mechanism is disconnected from the base and the second transmission mechanism is connected to the base, the power of the base is transmitted to the first transmission mechanism and the intermediate transmission mechanism through the second transmission mechanism and output through the first transmission mechanism and the intermediate transmission mechanism.

[0012] In some embodiments, the intermediate transmission mechanism includes a first gear, a connecting shaft and a second gear, the first gear and the second gear are respectively connected to both ends of the connecting shaft, the first gear is transmission-connected to the first transmission mechanism, and the second gear is transmission-connected to the second transmission mechanism.

[0013] In some embodiments, the first transmission mechanism includes a third gear, the third gear is meshed with the first gear, and the third gear can be selectively connected to or disconnected from the base.

[0014] In some embodiments, the second transmission mechanism includes a fourth gear, a planet carrier and a fifth gear, the fourth gear is mounted on the base, the fifth gear is rotatably mounted on the planet carrier, the fifth gear is meshed with the second gear and the fourth gear at the same time, and the planet carrier can be selectively connected or disconnected from the base.

[0015] In some embodiments, the number of the first gear, the second gear, and the fifth gear are all three.

[0016] In some embodiments, the three fifth gears are evenly arranged along the outer circumference of the fourth gear.

[0017] In some embodiments, the transmission device further includes a first clutch and a second clutch, wherein the first clutch is disposed between the first transmission mechanism and the base, and the second clutch is disposed between the second transmission mechanism and the base.

[0018] In some embodiments, the transmission device further includes a driving mechanism, and the driving mechanism is used to control the opening and closing of the first clutch and the second clutch.

[0019] In some embodiments, the driving mechanism includes a hydraulic pump and a reversing valve, the hydraulic pump is used to provide power for the action of the first clutch and the second clutch, and the reversing valve is used to control the switching of the connecting oil circuit between the hydraulic pump and the first clutch and the second clutch.

[0020] To achieve the above object, the present invention also provides a transmission, comprising the above transmission device.

[0021] Based on the above technical solution, in the embodiment of the present invention, the first transmission mechanism and the second transmission mechanism are cooperated with the base in a selectively connectable or disconnectable manner, so that the connection state of the first transmission mechanism and the second transmission mechanism and the base can be switched according to actual needs, thereby changing the output state of the first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism, and then changing the number of output ends of the transmission device to meet the needs of more working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of an embodiment of a transmission device of the present invention.

[0024] Figure 2 It is a schematic structural diagram of an embodiment of a transmission device of the present invention.

[0025] Figure 3 It is a schematic structural diagram of another angle of an embodiment of the transmission device of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the intermediate transmission mechanism in one embodiment of the transmission device of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the first side of an embodiment of a transmission device of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the second side of an embodiment of a transmission device of the present invention.

[0029] Figure 7 The figure is a hydraulic principle diagram of a switching mechanism in one embodiment of the transmission device of the present invention.

[0030] In the figure:

[0031] 10. base; 20. rotating body; 30. third gear; 40. planetary carrier; 50. fourth gear; 60. intermediate transmission mechanism; 61. connecting shaft; 62. first gear; 63. second gear; 70. first clutch; 80. second clutch; 90. housing; 100. hydraulic pump; 110. reversing valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0034] like Figure 1-3 As shown, in one embodiment of the transmission device provided by the present invention, the transmission device includes a base 10, a first transmission mechanism, a second transmission mechanism and an intermediate transmission mechanism, the rotating body 20 can rotate relative to the base 10, the first transmission mechanism can be selectively connected or disconnected from the base 10, and a part of the second transmission mechanism can be selectively connected or disconnected from the base 10, and the intermediate transmission mechanism 60 is arranged between the first transmission mechanism and the second transmission mechanism. The first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism 60 are configured as follows: when the first transmission mechanism is connected to the base 10 and a part of the second transmission mechanism is disconnected from the base 10, the power obtained by the rotating body 20 is output through the second transmission mechanism under the limiting action of the first transmission mechanism and the intermediate transmission mechanism 60, and when the first transmission mechanism is disconnected from the base 10 and a part of the second transmission mechanism is connected to the base 10, the power obtained by the rotating body 20 is transmitted to the first transmission mechanism and the intermediate transmission mechanism 60 through the second transmission mechanism and output through the first transmission mechanism and the intermediate transmission mechanism 60.

[0035] In the above embodiment, the first transmission mechanism and the second transmission mechanism are both matched with the base 10 in a selectively connectable or disconnectable manner, that is, the first transmission mechanism can be connected to the base 10 or disconnected from the base 10; part of the second transmission mechanism can be connected to the base 10 or disconnected from the base 10.

[0036] The advantage of such a setting is that, according to actual needs, by switching the connection state (including connection and disconnection) between the first transmission mechanism and the base 10 and the connection state between the second transmission mechanism and the base 10, the output state of the first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism can be changed (including non-output state and output state, in the non-output state, the first transmission mechanism, the second transmission mechanism or the intermediate transmission mechanism remains stationary or transmits power as a transmission component; in the output state, the first transmission mechanism, the second transmission mechanism or the intermediate transmission mechanism outputs power as an output component), thereby changing the number of output ends of the transmission device to meet the needs of more working conditions.

[0037] When the first transmission mechanism is connected to the base 10 and part of the second transmission mechanism is disconnected from the base 10, the first transmission mechanism is fixed relative to the base 10. Under the limiting action of the first transmission mechanism and the intermediate transmission mechanism 60, the second transmission mechanism serves as an output component, and the power obtained by the rotating body 20 is output through the second transmission mechanism.

[0038] When the first transmission mechanism is disconnected from the base 10 and part of the second transmission mechanism is connected to the base 10, part of the second transmission mechanism is fixed relative to the base 10, the first transmission mechanism and the intermediate transmission mechanism 60 serve as output components, and the power obtained by the rotating body 20 is transmitted to the first transmission mechanism and the intermediate transmission mechanism 60 through the movable part of the second transmission mechanism relative to the base 10, and output through the first transmission mechanism and the intermediate transmission mechanism 60. At this time, the first transmission mechanism and the intermediate transmission mechanism 60 can both output power, so the output ends of the transmission device are increased, which can meet more needs; at the same time, when more output ends are not needed, it can also be switched to a mode of outputting only through the second transmission mechanism, and the output form is more flexible and switchable, and has higher adaptability.

[0039] The transmission device further comprises a housing 90 , and the base 10 , the first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism 60 are all arranged in the housing 90 .

[0040] The base 10 is relatively fixed to the housing 90 . The base 10 may be a shaft-like structure. The rotating body 20 is sleeved on the outer periphery of the base 10 . External force acting on the rotating body 20 may cause the rotating body 20 to rotate relative to the base 10 around the central axis of the base 10 .

[0041] like Figure 4 As shown, the intermediate transmission mechanism 60 includes a first gear 62, a connecting shaft 61 and a second gear 63. The first gear 62 and the second gear 63 are respectively connected to both ends of the connecting shaft 61. The first gear 62 is transmission-connected to the first transmission mechanism, and the second gear 63 is transmission-connected to the second transmission mechanism. Transmission connection means that power can be transmitted. As a component for intermediate power transmission, the intermediate transmission mechanism can realize power transmission between the first transmission mechanism and the second transmission mechanism.

[0042] The intermediate transmission mechanism 60 adopts a double gear structure and can be connected to the first transmission mechanism and the second transmission mechanism at the same time, such as meshing connection.

[0043] like Figure 1-6 As shown, the first transmission mechanism includes a third gear 30 , which is meshed with the first gear 62 , and the third gear 30 can be selectively connected to or disconnected from the base body 10 .

[0044] The third gear 30 is provided with gear teeth on its periphery, and a through hole is provided at its center. The third gear 30 is sleeved on the periphery of the base 10 through the through hole, and the gear teeth on the periphery of the first gear 62 mesh with the gear teeth on the periphery of the third gear 30.

[0045] The second transmission mechanism includes a planet carrier 40 and a fourth gear 50 . The fourth gear 50 is rotatably mounted on the planet carrier 40 . The fourth gear 50 is meshed with the second gear 63 and the rotating body 20 at the same time. The planet carrier 40 can be selectively connected or disconnected with the base 10 .

[0046] The number of the first gear 62 , the second gear 63 and the fourth gear 50 can be flexibly set as needed, for example, they can all be one, two or three.

[0047] The three fourth gears 50 are evenly arranged along the outer circumference of the rotating body 20. The three first gears 62 are evenly arranged along the outer circumference of the third gear 30. The planet carrier 40 is in a triangular shape.

[0048] The transmission device may further include a first clutch 70 and a second clutch 80 . The first clutch 70 is disposed between the first transmission mechanism and the base 10 , and the second clutch 80 is disposed between the second transmission mechanism and the base 10 .

[0049] When the first clutch 70 is in an engaged state, the third gear 30 is fixedly connected to the base 10; when the first clutch 70 is in a disengaged state, the third gear 30 is disconnected from the base 10, and the third gear 30 can rotate relative to the base 10. When the second clutch 80 is in an engaged state, the planet carrier 40 is fixedly connected to the base 10; when the second clutch 80 is in a disengaged state, the planet carrier 40 is disconnected from the base 10, and the planet carrier 40 can rotate relative to the base 10.

[0050] By providing the first clutch 70 and the second clutch 80 , the connection state between the first transmission mechanism and the second transmission mechanism and the base body 10 can be conveniently controlled.

[0051] The transmission device may further include a driving mechanism for controlling the opening and closing of the first clutch 70 and the second clutch 80 .

[0052] like Figure 7 As shown, the driving mechanism may include a hydraulic pump 100 and a reversing valve 110 , wherein the hydraulic pump 100 is used to provide power for the action of the first clutch 70 and the second clutch 80 , and the reversing valve 110 is used to control the switching of the oil circuit connecting the hydraulic pump 100 and the first clutch 70 and the second clutch 80 .

[0053] The first clutch 70 and the second clutch 80 are both normally closed hydraulic clutches, and the reversing valve 110 includes a two-position four-way reversing valve, the oil inlet of the valve is connected to the oil outlet P of the hydraulic pump 100, the oil outlet of the valve is connected to the oil return port T of the hydraulic pump 100, and the two working oil ports of the valve are connected to the first clutch 70 and the second clutch 80 respectively.

[0054] When the right position of the reversing valve 110 is the working position, the hydraulic oil of the hydraulic pump 100 is supplied to the second clutch 80, so that the valve stem of the second clutch 80 moves to the left, and the second clutch 80 is in a disengaged state, while the hydraulic oil in the valve stem cavity of the first clutch 70 is connected to the return oil port T, and is therefore in an engaged state.

[0055] When the left position of the reversing valve 110 is the working position, the hydraulic oil of the hydraulic pump 100 is supplied to the first clutch 70, so that the valve stem of the first clutch 70 moves rightward, and the first clutch 70 is in a disengaged state, while the hydraulic oil in the valve stem cavity of the second clutch 80 is connected to the return oil port T, and is therefore in an engaged state.

[0056] The following joint Figure 1-7 The working process of one embodiment of the transmission device of the present invention is described as follows:

[0057] First, start the hydraulic pump 100. At this time, the reversing valve 110 does not work, and the pressure oil enters the rod chamber of the oil cylinder of the second clutch 80. At this time, the moving and stationary plates of the second clutch 80 are disengaged, and the planet carrier 40 is disconnected from the base 10; while the first clutch 70 remains engaged, the third gear 30 is connected to the base 10, and the third gear 30 is fixed relative to the base 10. At this time, the transmission device is a single-degree-of-freedom planetary gear system. When the rotating body 20 obtains external force to rotate relative to the base 10, under the limiting action of the third gear 30, the intermediate transmission mechanism 60 and the fourth gear 50 perform a compound motion of self-rotation around their own axis and revolution around the central axis of the base 10, and the planet carrier 40 performs a rotational motion around the central axis of the base 10, and the planet carrier 40 is the output end. At this time, the transmission device is a planetary gear transmission mechanism with a large speed ratio.

[0058] When the reversing valve 110 is energized, the pressure oil enters the rod chamber of the first clutch 70, and the first clutch 70 is disengaged, and the third gear 30 is disconnected from the base 10; while the second clutch 80 remains engaged, the planet carrier 40 is connected to the base 10, and the planet carrier 40 is fixed relative to the base 10. At this time, the transmission device is a fixed-axis gear train, and when the rotating body 20 obtains external force and rotates relative to the base 10, the fourth gear 50, the intermediate transmission mechanism 60 and the third gear 30 all rotate on their own, the first transmission mechanism and the three intermediate transmission mechanisms 60 are all output ends, the first gears 62 of the three intermediate transmission mechanisms 60 are three offset outputs, and the third gear 30 is a coaxial output.

[0059] Through the description of multiple embodiments of the transmission device of the present invention, it can be seen that the transmission device of the present invention realizes the change of the output end by changing the connection state of the first transmission mechanism and the second transmission mechanism with the base body, realizes different power flow distribution, and has a compact structure, easy operation and a wide range of applications.

[0060] Based on the above transmission device, the present invention further proposes a transmission, which includes the above transmission device.

[0061] The positive technical effects of the transmission device in the above-mentioned embodiments are also applicable to the transmission and will not be elaborated here.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that without departing from the principles of the present invention, the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents, and these modifications and equivalent replacements should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A transmission device, characterized in that: include: Matrix (10); A rotating body (20) capable of rotating relative to the base body (10); A first transmission mechanism, selectively connectable to or disconnectable from the base body (10); A second transmission mechanism, part of which is selectively connectable to or disconnectable from the base body (10); and An intermediate transmission mechanism (60) is arranged between the first transmission mechanism and the second transmission mechanism; The first transmission mechanism, the second transmission mechanism and the intermediate transmission mechanism (60) are configured such that: when the first transmission mechanism is connected to the base (10) and part of the second transmission mechanism is disconnected from the base (10), the power obtained by the rotating body (20) is output through the second transmission mechanism under the limiting action of the first transmission mechanism and the intermediate transmission mechanism (60); and when the first transmission mechanism is disconnected from the base (10) and part of the second transmission mechanism is connected to the base (10), the power obtained by the rotating body (20) is transmitted to the first transmission mechanism and the intermediate transmission mechanism (60) through the second transmission mechanism and output through the first transmission mechanism and the intermediate transmission mechanism (60); The intermediate transmission mechanism (60) comprises a first gear (62), a connecting shaft (61) and a second gear (63); the first gear (62) and the second gear (63) are respectively connected to two ends of the connecting shaft (61); the first gear (62) is in transmission connection with the first transmission mechanism, and the second gear (63) is in transmission connection with the second transmission mechanism; The first transmission mechanism comprises a third gear (30), the third gear (30) and the first gear (62) meshing with each other, and the third gear (30) can be selectively connected to or disconnected from the base body (10); The second transmission mechanism comprises a planet carrier (40) and a fourth gear (50), wherein the fourth gear (50) is rotatably mounted on the planet carrier (40), the fourth gear (50) is meshed with the second gear (63) and the rotating body (20) at the same time, and the planet carrier (40) can be selectively connected or disconnected from the base body (10).

2. The transmission device according to claim 1, characterized in that: The number of the first gear (62), the second gear (63) and the fourth gear (50) are all three.

3. The transmission device according to claim 2, characterized in that: The three fourth gears (50) are evenly arranged along the outer circumference of the rotating body (20).

4. The transmission device according to claim 1, characterized in that: It also includes a first clutch (70) and a second clutch (80), wherein the first clutch (70) is arranged between the first transmission mechanism and the base (10), and the second clutch (80) is arranged between the second transmission mechanism and the base (10).

5. The transmission device according to claim 4, characterized in that: It also includes a driving mechanism, which is used to control the opening and closing of the first clutch (70) and the second clutch (80).

6. The transmission device according to claim 5, characterized in that: The driving mechanism comprises a hydraulic pump (100) and a reversing valve (110); the hydraulic pump (100) is used to provide power for the actions of the first clutch (70) and the second clutch (80); and the reversing valve (110) is used to control the switching of the oil circuit connecting the hydraulic pump (100) and the first clutch (70) and the second clutch (80).

7. A transmission, characterized in that: Comprising a transmission device as described in any one of claims 1 to 6.

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