Gear transmission mechanism and gearbox

Abstract

The utility model discloses a gear transmission mechanism and a gearbox, and belongs to the technical field of gear transmission. An input gear of the gear transmission mechanism is fixedly sleeved on the input shaft; the first planetary gear, the first transmission gear and the second transmission gear are connected through a first rotating shaft, and the first transmission gear is meshed with the input gear; the fixed gear ring is meshed with the first planetary gear; the second planetary gear is meshed with the output gear ring and the second transmission gear, and a second rotating shaft penetrates through the circle center of the second planetary gear; the first fixing frame is provided with a first fixing hole and a second fixing hole; the second fixing frame is provided with a third fixing hole and a fourth fixing hole, the two opposite ends of the first rotating shaft are arranged in the first fixing hole and the third fixing hole respectively, and the two opposite ends of the second rotating shaft are arranged in the second fixing hole and the fourth fixing hole respectively. According to the gear transmission mechanism disclosed by the utility model, the driving force output by the gear mechanism can be increased, so that a large load is driven.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear drive technical field especially relates to a gear drive mechanism and gearbox. BACKGROUND

[0002] Gear drive refers to the device of gear pair transmission movement and power, is widely used in modern various equipment. The existing gear drive structure mainly realizes deceleration through a plurality of gear two two mutual meshing, but the force of output is smaller, cannot drive to big load. UTILITY MODEL CONTENTS

[0003] The utility model discloses a gear drive mechanism and gearbox can increase the driving force of gear mechanism output to drive big load.

[0004] Firstly, the utility model provides a gear drive mechanism, including:

[0005] Input shaft;

[0006] Input gear, fixedly cover set up on input shaft;

[0007] First planetary gear, opposite two sides are equipped with first drive gear and second drive gear respectively, first planetary gear, first drive gear and second drive gear are connected through first rotation axis, and first drive gear is engaged with input gear;

[0008] Fixed gear ring, with first planetary gear is engaged;

[0009] Output gear ring, set up in fixed gear ring close to one side of second drive gear;

[0010] Second planetary gear, second planetary gear is engaged with output gear ring and second drive gear respectively, and the center of circle of second planetary gear is equipped with second rotation axis;

[0011] First fixed frame is equipped with first fixed hole and second fixed hole;

[0012] Second fixed frame is equipped with third fixed hole and fourth fixed hole, and the opposite two ends of first rotation axis are arranged in first fixed hole and third fixed hole respectively, and the opposite two ends of second rotation axis are arranged in second fixed hole and fourth fixed hole respectively.

[0013] The gear transmission mechanism provided by the utility model, through the input gear driving the first transmission gear to rotate, since the first planetary gear and the first transmission gear, the second transmission gear are linked, and the first planetary gear and the fixed gear ring are engaged, the first planetary gear is subjected to the force of the input gear and the fixed gear ring at the same time, which helps to increase the transmission force of the second transmission gear to the second planetary gear. In addition, the second planetary gear is also subjected to the driving force of the first fixed frame and the second fixed frame at the same time, so as to increase the driving force output by the output gear ring, and then a larger load can be driven. The first fixed frame and the second fixed frame are fixed from the opposite ends of the first rotating shaft and the second rotating shaft respectively, and stable connection between the components can be ensured at the same time, and there is no need to set the corresponding gear on the input shaft to engage with the second planetary gear.

[0014] Further, the first fixed frame is provided with a fifth fixed hole, the second fixed frame is provided with a sixth fixed hole, and the fastening shaft is sequentially arranged in the fifth fixed hole and the sixth fixed hole.

[0015] By arranging the fastening shaft, the connection stability between the first fixed frame and the second fixed frame can be further enhanced.

[0016] Further, the number of fastening shafts is multiple, and the multiple fastening shafts are arranged in a circumferential interval around the input shaft.

[0017] Further, the first fixed frame is arranged on the side of the fixed gear ring away from the output gear ring, and the second fixed frame is arranged on the side of the output gear ring away from the fixed gear ring.

[0018] Further, the first rotating shaft is provided with a limiting ring, and the first transmission gear, the first planetary gear and the second transmission gear are sequentially abutted on the limiting ring.

[0019] By arranging the limiting ring, axial displacement of the first transmission gear, the first planetary gear and the second transmission gear on the first rotating shaft can be avoided.

[0020] Further, the opposite ends of the first rotating shaft are both provided with a first bearing, and the two first bearings are arranged in the first fixed hole and the third fixed hole respectively.

[0021] Further, the opposite ends of the second rotating shaft are both provided with a second bearing, and the two second bearings are arranged in the second fixed hole and the fourth fixed hole respectively.

[0022] Furthermore, there are multiple first planetary gears, which are arranged at intervals around the input gear; and / or there are multiple second planetary gears, which are arranged at intervals around the input gear.

[0023] In a second aspect, the present invention provides a gearbox comprising any one of the above-mentioned gear transmission mechanisms.

[0024] Furthermore, the number of the gear transmission mechanisms is at least two, and the at least two gear transmission mechanisms are connected in sequence.

[0025] As can be seen from the above, the gear transmission mechanism provided by the present invention drives the first transmission gear to rotate via the input gear. Since the first planetary gears are linked to the first and second transmission gears, and mesh with the fixed ring gear, the first planetary gears are simultaneously subjected to forces from both the input gear and the fixed ring gear, helping to increase the transmission force from the second transmission gear to the second planetary gear. Furthermore, the second planetary gears are also driven by the first and second fixed frames, thereby increasing the driving force output by the output ring gear and, in turn, enabling the driving of a larger load. The first and second fixed frames are secured at opposite ends of the first and second rotating shafts, respectively, ensuring a stable connection between the various components while eliminating the need for corresponding gears on the input shaft to mesh with the second planetary gears.

[0026] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or understood by practicing the embodiments of the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a schematic structural diagram of a gear transmission mechanism proposed by the present invention.

[0028] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the gear transmission mechanism.

[0029] Figure 3 for Figure 1 Structural diagram of the gear transmission mechanism from another perspective.

[0030] Figure 4 for Figure 2 Structural diagram of a first rotating shaft provided with a limiting ring.

[0031] Figure 5 This is a structural schematic diagram of a gearbox proposed by the utility model.

[0032] Figure 6 Fig. 1 is a schematic view of a cross-sectional structure of a speed change gear. Figure 5 Fig. 2 is a schematic view of a cross-sectional structure of a lift drive mechanism.

[0033] Figure 7 Fig. 3 is a schematic view of a structure of a lift drive mechanism.

[0034] Figure 8 Fig. 4 is a schematic view of a cross-sectional structure of a lift drive mechanism. Figure 7 Fig. 5 is a schematic view of a cross-sectional structure of a lift drive mechanism.

[0035] In the drawings: 10, input shaft; 20, input gear; 30, first planetary gear; 31, first drive gear; 32, second drive gear; 33, first rotating shaft; 331, limiting ring; 332, first bearing; 40, fixed ring gear; 50, output ring gear; 60, second planetary gear; 61, second rotating shaft; 611, second bearing; 70, first fixed frame; 71, first fixed hole; 72, second fixed hole; 73, fifth fixed hole; 80, second fixed frame; 81, third fixed hole; 82, fourth fixed hole; 83, sixth fixed hole; 90, fastening shaft; 100, lift drive mechanism; 110, lift input shaft; 120, lift output shaft; 130, lift gear assembly. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same reference numerals throughout. The embodiments described below are examples for explaining the present application and are not intended to limit the present application.

[0037] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of the specific examples are described below. These are, of course, merely examples and are not intended to limit the present application. Further, the present application can repeat reference numerals and / or reference letters in different examples and this repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and / or configurations discussed.

[0038] Reference is made to the accompanying drawings that form a part of this disclosure. Figure 1 , the accompanying drawings that form a part of this disclosure. Figure 2 , the accompanying drawings that form a part of this disclosure. Figure 3In one of the embodiments, the gear transmission mechanism comprises an input shaft 10, an input gear 20, a first planetary gear 30, a fixed gear ring 40, an output gear ring 50, a second planetary gear 60, a first fixed frame 70 and a second fixed frame 80. The input gear 20 is fixedly sleeved on the input shaft 10; the first planetary gear 30 is provided with a first transmission gear 31 and a second transmission gear 32 on opposite sides respectively, the first planetary gear 30, the first transmission gear 31 and the second transmission gear 32 are connected through a first rotating shaft 33, the first transmission gear 31 is engaged with the input gear 20; the fixed gear ring 40 is engaged with the first planetary gear 30; the output gear ring 50 is arranged on the side of the fixed gear ring 40 close to the second transmission gear 32; the second planetary gear 60 is engaged with the output gear ring 50 and the second transmission gear 32 respectively, and the center of the second planetary gear 60 is provided with a second rotating shaft 61; the first fixed frame 70 is provided with a first fixed hole 71 and a second fixed hole 72; the second fixed frame 80 is provided with a third fixed hole 81 and a fourth fixed hole 82, and opposite ends of the first rotating shaft 33 are arranged in the first fixed hole 71 and the third fixed hole 81 respectively, and opposite ends of the second rotating shaft 61 are arranged in the second fixed hole 72 and the fourth fixed hole 82 respectively.

[0039] As can be seen from the above, the gear transmission mechanism provided by the utility model, through the input gear 20 driving the first transmission gear 31 to rotate, since the first planetary gear 30 and the first transmission gear 31 and the second transmission gear 32 are linked, and the first planetary gear 30 is engaged with the fixed gear ring 40, the first planetary gear 30 is subjected to the force of the input gear 20 and the fixed gear ring 40 at the same time, which helps to increase the transmission force of the second transmission gear 32 to the second planetary gear 60. In addition, the second planetary gear 60 is also subjected to the driving force of the first fixed frame 70 and the second fixed frame 80 at the same time, thereby increasing the driving force output by the output gear ring 50, and further driving a larger load. The first fixed frame 70 and the second fixed frame 80 are fixed from opposite ends of the first rotating shaft 33 and the second rotating shaft 61 respectively, which can also ensure stable connection between the components, and there is no need to arrange corresponding gears on the input shaft 10 to engage with the second planetary gear 60.

[0040] In specific applications, the input gear 20 rotates under the driving of the input shaft 10 to drive the first transmission gear 31 to rotate, the first planetary gear 30 rotates in the fixed gear ring 40 along with the rotation of the first transmission gear 31, the second transmission gear 32 drives the second planetary gear 60 to rotate along with the rotation of the first transmission gear 31, and the second planetary gear 60 drives the output gear ring 50 to rotate. In addition, the first fixed frame 70 and the second fixed frame 80 can be driven to rotate by the first rotating shaft 33 along with the rotation of the first transmission gear 31, the second fixed frame 80 also outputs driving force to the second planetary gear 60, the second planetary gear 60 drives the output gear ring 50 to rotate, thereby driving the load connected with the output gear ring 50.

[0041] In one embodiment, a fastening shaft 90 is further included. A fifth fixing hole 73 is provided on the first fixing frame 70 , and a sixth fixing hole 83 is provided on the second fixing frame 80 . The fastening shaft 90 is sequentially passed through the fifth fixing hole 73 and the sixth fixing hole 83 .

[0042] The above technical solution helps to further enhance the connection stability between the first fixing frame 70 and the second fixing frame 80 by providing the fastening shaft 90 .

[0043] In one embodiment, there are multiple fastening shafts 90 , and the multiple fastening shafts 90 are circumferentially spaced apart around the input shaft 10 .

[0044] In one embodiment, the first fixing bracket 70 is disposed on a side of the fixed ring gear 40 away from the output ring gear 50 , and the second fixing bracket 80 is disposed on a side of the output ring gear 50 away from the fixed ring gear 40 .

[0045] Reference Attachment Figure 4 In one embodiment, a limiting ring 331 is provided on the first rotating shaft 33 , and the first transmission gear 31 , the first planetary gear 30 and the second transmission gear 32 are in contact with the limiting ring 331 in sequence.

[0046] By adopting the above technical solution, the limiting ring 331 is provided to prevent the first transmission gear 31 , the first planetary gear 30 and the second transmission gear 32 from axial displacement on the first rotating shaft 33 .

[0047] In one embodiment, first bearings 332 are disposed at opposite ends of the first rotating shaft 33 , and the two first bearings 332 are respectively disposed in the first fixing hole 71 and the third fixing hole 81 .

[0048] In one embodiment, second bearings 611 are disposed at opposite ends of the second rotating shaft 61 , and the two second bearings 611 are respectively disposed in the second fixing hole 72 and the fourth fixing hole 82 .

[0049] In one embodiment, there are multiple first planetary gears 30 , which are circumferentially spaced around the input gear 20 ; and / or there are multiple second planetary gears 60 , which are circumferentially spaced around the input gear 20 .

[0050] Reference Attachment Figure 5 , Attachment Figure 6 The present invention also provides a gearbox comprising any of the above-mentioned gear transmission mechanisms.

[0051] In one embodiment, the number of the gear transmission mechanisms is at least two, and the at least two gear transmission mechanisms are connected in sequence.

[0052] Specifically, the number of gear transmission mechanisms can be two (as shown in the attached Figure 6

[0053] In one embodiment, the gearbox further comprises a lift transmission mechanism 100, the lift transmission mechanism 100 comprising a lift input shaft 110, a lift output shaft 120 and a lift gear assembly 130, the lift input shaft 110 being capable of increasing the driving force of the lift output shaft 120 via the lift gear assembly 130, the lift output shaft 120 being connected to the input shaft 10.

[0054] Specifically, the lift transmission mechanism 100 is an existing transmission assembly, and it can be understood that the gearbox can also be combined and connected with any suitable transmission assembly and gear transmission mechanism.

[0055] In the description of the present application, the description of the terms "one embodiment", "certain embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The above is only some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.​

Claims

1. A gear mechanism, characterized by, The utility model relates to a kind of transmission mechanism, including: Input shaft (10); Input gear (20), fixedly sleeved on the input shaft (10); First planetary gear (30), relative two sides are respectively provided with first transmission gear (31) and second transmission gear (32), the first planetary gear (30), the first transmission gear (31) and the second transmission gear (32) are connected by first rotating shaft (33), the first transmission gear (31) is engaged with the input gear (20); Fixed gear (40), with the first planetary gear (30) is engaged; Output gear (50), it is arranged on the fixed gear (40) side close to the second transmission gear (32); Second planetary gear (60), the second planetary gear (60) is engaged with the output gear (50) and the second transmission gear (32) respectively, the center of circle of the second planetary gear (60) is provided with second rotating shaft (61); First fixed frame (70), it is provided with first fixed hole (71) and second fixed hole (72); Second fixed frame (80), it is provided with third fixed hole (81) and fourth fixed hole (82), the opposite ends of the first rotating shaft (33) are respectively arranged in the first fixed hole (71) and the third fixed hole (81), the opposite ends of the second rotating shaft (61) are respectively arranged in the second fixed hole (72) and the fourth fixed hole (82).

2. A gear mechanism according to claim 1, wherein It further includes fastening shaft (90), the first fixed frame (70) is provided with fifth fixed hole (73), the second fixed frame (80) is provided with sixth fixed hole (83), the fastening shaft (90) is sequentially arranged in the fifth fixed hole (73) and the sixth fixed hole (83).

3. A gear mechanism according to claim 2, wherein The number of the fastening shaft (90) is multiple, and multiple fastening shafts (90) are arranged circumferentially around the input shaft (10).

4. A gear mechanism according to claim 1, wherein The first fixed frame (70) is arranged on the side of the fixed gear (40) away from the output gear (50), and the second fixed frame (80) is arranged on the side of the output gear (50) away from the fixed gear (40).

5. A gear mechanism according to claim 1, wherein The first rotating shaft (33) is provided with a limiting ring (331), and the first transmission gear (31), the first planetary gear (30) and the second transmission gear (32) are sequentially abutted on the limiting ring (331).

6. A gear mechanism according to claim 1, wherein The opposite ends of the first rotating shaft (33) are both provided with a first bearing (332), and the two first bearings (332) are respectively arranged in the first fixed hole (71) and the third fixed hole (81).

7. A gear mechanism according to claim 1, wherein The opposite ends of the second rotating shaft (61) are both provided with a second bearing (611), and the two second bearings (611) are respectively arranged in the second fixed hole (72) and the fourth fixed hole (82).

8. A gear mechanism according to claim 1, wherein The number of the first planetary gears (30) is multiple, and the multiple first planetary gears (30) are arranged at intervals around the circumference of the input gear (20); and / or, the number of the second planetary gears (60) is multiple, and the multiple second planetary gears (60) are arranged at intervals around the circumference of the input gear (20).

9. A gearbox characterized in that, The gear transmission mechanism comprises the gear transmission mechanism according to any one of claims 1-8.

10. A gearbox according to claim 9, characterised in that The number of the gear transmission mechanisms is at least two, and the at least two gear transmission mechanisms are connected in sequence.

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