Transmission device and ditcher

Abstract

The utility model provides a transmission device which is used on a ditcher and comprises a driving shaft, one end of the driving shaft is provided with a first end cover, one side of the first end cover is provided with a first bearing seat fixedly connected with the first end cover, and a first bearing capable of rotating on the driving shaft and a second bearing capable of rotating on the driving shaft are sequentially arranged in the first bearing seat. The oil seals and the first dustproof ring play a role in sealing, and check rings are further arranged on one side or two sides of the first dustproof ring. According to the transmission device of the structure, the multiple oil seals, the first dustproof ring and the check ring are arranged at the end of the driving shaft, that is, the three-layer sealing structure is arranged to seal the shaft end of the driving shaft, and compared with similar devices of an existing structure, the transmission device has the advantages of being good in sealing effect, simple in structure, low in use cost and convenient to install and maintain. In addition, the utility model further provides the ditcher comprising the transmission device.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a transmission device and a trencher. Background Technology

[0002] In recent years, with the continuous advancement of agricultural modernization, agricultural machinery of various structures, such as rotary tillers and ditchers, has been increasingly widely used in agricultural production activities, greatly improving farming efficiency.

[0003] A trencher typically consists of a gearbox, a transmission mechanism, and a trenching disc. One end of the transmission mechanism is connected to the gearbox, and the other end is connected to the trenching disc. When the gearbox operates, it drives the transmission mechanism to rotate, thereby transmitting power to the trenching disc to achieve the trenching effect. However, due to the harsh working environment, the sealing of the transmission mechanism has become a technical challenge. Current trenchers widely suffer from poor sealing, inconvenient installation and maintenance, and high operating costs.

[0004] In summary, how to provide a transmission device with simple structure, good sealing performance, and convenient installation and maintenance, as well as a trenching machine including this transmission device, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a transmission device with simple structure, good sealing performance, and convenient installation and maintenance, as well as a trenching machine including this transmission device.

[0006] The solution of this utility model is implemented as follows: This utility model proposes a transmission device for use on a trenching machine. The transmission device includes a drive shaft, one end of which is provided with a first end cover. A first bearing seat fixedly connected to the first end cover is provided on one side of the first end cover. A first bearing rotatable on the drive shaft is sequentially arranged in the first bearing seat, along with several oil seals and a first dustproof ring for sealing. A retaining ring is also provided on one or both sides of the first dustproof ring. This transmission device, by providing several oil seals, a first dustproof ring, and retaining rings at the end of the drive shaft, provides a three-layer sealing structure to seal the shaft end. Compared with similar existing devices, it has the advantages of good sealing effect, simple structure, low cost, and convenient installation and maintenance.

[0007] Another technical solution of this utility model is that, based on the above, the oil seal includes a first oil seal and a second oil seal, with one side of the first oil seal contacting one side of the second oil seal.

[0008] Another technical solution of this utility model is that, based on the above, the oil seal further includes a third oil seal, which is disposed between the second oil seal and the first dustproof ring.

[0009] Another technical solution of this utility model is that, based on the above, the retaining ring includes a first retaining ring, which is disposed between the first dustproof ring and the third oil seal, and one side of the first retaining ring is in contact with one side of the first dustproof ring.

[0010] Another technical solution of this utility model is that, based on the above, the retaining ring further includes a second retaining ring, which is disposed on the side of the first dustproof ring away from the first retaining ring, and one side of the second retaining ring is in contact with the side of the first dustproof ring away from the first retaining ring.

[0011] Another technical solution of this utility model is that, based on the above, the transmission device further includes a connecting disc and a first connecting member disposed at one end of the first bearing seat. The connecting disc is sleeved on the drive shaft and is detachably fixed on the drive shaft by the first connecting member.

[0012] Another technical solution of this utility model is that, based on the above, the transmission device further includes a second end cover disposed at the other end of the drive shaft, and a second bearing seat fixedly connected to the second end cover. The second bearing seat is provided with a second dustproof ring for dustproof function, a fourth oil seal and a fifth oil seal for sealing function, and a rotatable second bearing in sequence.

[0013] Another technical solution of this utility model is that, based on the above, a third retaining ring and a fourth retaining ring are respectively provided on both sides of the second dustproof ring, and a sixth oil seal is provided on the side of the fifth oil seal opposite to the fourth oil seal.

[0014] Another technical solution of this utility model is that, based on the above, the transmission device further includes an output shaft and a second connecting member. The output shaft is disposed at one end of the drive shaft, and the drive shaft and the output shaft are detachably and fixedly connected together by the second connecting member.

[0015] On the other hand, this utility model also proposes a trenching machine, including a frame, on which a gearbox, a transmission device and a trenching disc are provided. One end of the transmission device is connected to the gearbox and the other end is connected to the trenching disc. The transmission device is the transmission device described above. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] Figure 1 This is a schematic diagram of the structure of a transmission device according to the present invention;

[0018] Figure 2 This is a structural schematic diagram of a trenching machine according to the present invention.

[0019] The correspondence between the reference numerals in the attached figures is as follows:

[0020] 1. First end cover; 2. First bearing housing; 3. First oil seal

[0021] 4 Second oil seal 5 Third oil seal 6 First dust seal

[0022] 7 First retaining ring 8 Second retaining ring 9 Drive shaft

[0023] 10 First connector 11 Connecting plate 12 Second dustproof ring

[0024] 13 Second bearing housing; 14 Third retaining ring; 15 Fourth retaining ring

[0025] 16 Fourth oil seal 17 Fifth oil seal 18 Sixth oil seal

[0026] 19 Second end cap 20 Second connector 21 Connecting sleeve

[0027] 22 Output Shaft 23 Frame 24 Gearbox

[0028] 25. Trenching disc; 26. Soil retaining cover; 27. Trenching plow

[0029] 28 First bearing 29 Second bearing Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings. This description is merely illustrative and explanatory, and should not be construed as limiting the scope of protection of the present invention. Furthermore, those skilled in the art can combine the features in the embodiments described herein and in different embodiments according to the description in this document.

[0031] The embodiments of this utility model are as follows, please refer to them. Figure 1The transmission device shown is used on a trencher. Specifically, the transmission device includes a drive shaft 9. One end of the drive shaft 9, i.e., the left end shown in the figure, is equipped with a first end cover 1. On one side of the first end cover 1, i.e., the right side shown in the figure, is a first bearing seat 2 detachably fixed to the first end cover 1. Inside the first bearing seat 2, from left to right, a first bearing 28 rotatable on the drive shaft 9 is sequentially arranged. The outer periphery of the first bearing 28 is secured within the first bearing seat 2. Several oil seals and a first dust ring 6 provide sealing. Retaining rings are also provided on the left or right side, or on both sides, of the first dust ring 6. This transmission device, by providing several oil seals, a first dust ring 6, and retaining rings at the end of the drive shaft 9—that is, setting a three-layer sealing structure—seals the shaft end of the drive shaft 9. Compared with similar existing devices, it has the advantages of good sealing effect, simple structure, low operating cost, and convenient installation and maintenance.

[0032] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the oil seal specifically includes a first oil seal 3 and a second oil seal 4. One side of the first oil seal 3, i.e. the right side shown in the figure, and one side of the second oil seal 4, i.e. the left side shown in the figure, are in close contact.

[0033] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the oil seal also includes a third oil seal 5, which is located between the second oil seal 4 and the first dustproof ring 6, that is, on the right side of the second oil seal 4.

[0034] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the retaining ring specifically includes a first retaining ring 7, which is located between the first dustproof ring 6 and the third oil seal 5, that is, on the right side of the third right seal. The first retaining ring 7 is in close contact with the right side shown in the figure and the left side shown in the figure.

[0035] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the retaining ring also includes a second retaining ring 8. The second retaining ring 8 is disposed on the side of the first dustproof ring 6 away from the first retaining ring 7, i.e., the right side shown in the figure. The side of the second retaining ring 8, i.e., the left side shown in the figure, is in close contact with the side of the first dustproof ring 6 away from the first retaining ring 7, i.e., the right side shown in the figure. More specifically, the first oil seal 3, the second oil seal 4, the third oil seal 5, the first retaining ring 7, the first dustproof ring 6, and the second retaining ring 8 are sequentially arranged within the first bearing housing 2, which can greatly improve the sealing effect between the second bearing housing 13 and the drive shaft 9.

[0036] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the transmission device also includes a connecting disc 11 and a first connecting member 10 disposed at one end of the first bearing seat 2, i.e., the right end shown in the figure. The connecting disc 11 is specifically sleeved on the drive shaft 9 and is detachably fixed to the drive shaft 9 by the first connecting member 10. The first connecting member 10 is preferably a bolt, i.e., the connecting disc 11 is fixed to the drive shaft 9 by the bolt, and when the drive shaft 9 rotates, it drives the connecting disc 11 to rotate.

[0037] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the transmission device also includes a second end cover 19 disposed at the other end of the drive shaft 9, i.e. the right end shown in the figure, and a second bearing seat 13 fixedly connected to the second end cover 19. The second bearing seat 13 is provided with a second dustproof ring 12 for dustproof function, a fourth oil seal 16 and a fifth oil seal 17 for sealing function, and a rotatable second bearing 29 in sequence, and the fourth oil seal 16 and the fifth oil seal 17 are in contact.

[0038] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, a third retaining ring 14 and a fourth retaining ring 15 are respectively provided on the left and right sides of the second dustproof ring 12. A fifth oil seal 17 is located on the side opposite to the fourth oil seal 16, i.e., on the right side as shown, a sixth oil seal 18 is also provided. The third retaining ring 14 and the fourth retaining ring 15 are respectively in contact with the second dustproof ring 12. That is, within the second bearing housing 13, from left to right, the third retaining ring 14, the second dustproof ring 12, the fourth retaining ring 15, the fourth oil seal 16, the fifth oil seal 17, and the sixth oil seal 18 are arranged sequentially. By setting a three-layer sealing method, its sealing effect can be greatly improved.

[0039] Based on the above embodiments, in another embodiment of the present invention, such as Figure 1 As shown, the transmission device also includes an output shaft 22 and a second connecting member 20. The output shaft 22 is located at one end of the drive shaft 9, i.e., the right end shown in the figure, and the drive shaft 9 and the output shaft 22 are detachably fixed together by the second connecting member 20. The second connecting member 20 is preferably a bolt. Furthermore, a connecting sleeve 21 for connecting is provided around the output shaft 22.

[0040] The transmission device described above seals the shaft ends of the drive shaft 9 by setting three oil seals, one dust seal, and two retaining rings at the left and right ends of the drive shaft 9, respectively. This three-layer sealing structure seals the shaft ends of the drive shaft 9. Compared with similar devices in the existing structure, it has the advantages of good sealing effect, simple structure, low operating cost, and convenient installation and maintenance.

[0041] On the other hand, this utility model also proposes a trenching machine, including a frame 23. The frame 23 is equipped with a gearbox 24, a transmission device, and a trenching disc 25. One end of the transmission device is connected to the gearbox 24, and the other end is connected to the trenching disc 25. The transmission device is as described above. Furthermore, the frame 23 is also equipped with several trenching plows 27, and the trenching disc 25 is surrounded by a soil-retaining cover 26.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A transmission device for use on a trenching machine, characterized in that, The transmission device includes a drive shaft, one end of which is provided with a first end cover. A first bearing seat is provided on one side of the first end cover and is fixedly connected to the first end cover. A first bearing that can rotate on the drive shaft is arranged in sequence in the first bearing seat, as well as a plurality of oil seals and a first dust seal that serve a sealing function. A retaining ring is also provided on one or both sides of the first dust seal.

2. The transmission device according to claim 1, characterized in that, The oil seal includes a first oil seal and a second oil seal, with one side of the first oil seal in contact with one side of the second oil seal.

3. The transmission device according to claim 2, characterized in that, The oil seal also includes a third oil seal, which is disposed between the second oil seal and the first dust seal.

4. The transmission device according to claim 3, characterized in that, The retaining ring includes a first retaining ring, which is disposed between the first dustproof ring and the third oil seal, and one side of the first retaining ring is in contact with one side of the first dustproof ring.

5. The transmission device according to claim 4, characterized in that, The retaining ring further includes a second retaining ring, which is disposed on the side of the first dustproof ring away from the first retaining ring, and one side of the second retaining ring is in contact with the side of the first dustproof ring away from the first retaining ring.

6. The transmission device according to claim 5, characterized in that, The transmission device further includes a connecting disc and a first connecting member disposed at one end of the first bearing seat. The connecting disc is sleeved on the drive shaft and is detachably fixed to the drive shaft by the first connecting member.

7. The transmission device according to claim 6, characterized in that, The transmission device also includes a second end cover disposed at the other end of the drive shaft, and a second bearing housing fixedly connected to the second end cover. The second bearing housing is provided with a second dustproof ring for dust prevention, a fourth oil seal and a fifth oil seal for sealing, and a rotatable second bearing in sequence.

8. The transmission device according to claim 7, characterized in that, The second dustproof ring is further provided with a third retaining ring and a fourth retaining ring on both sides, and the fifth oil seal is provided with a sixth oil seal on the side opposite to the fourth oil seal.

9. The transmission device according to claim 8, characterized in that, The transmission device further includes an output shaft and a second connector. The output shaft is disposed at one end of the drive shaft, and the drive shaft and the output shaft are detachably and fixedly connected together by the second connector.

10. A trenching machine, comprising a frame, wherein a gearbox, a transmission device, and a trenching disc are mounted on the frame, one end of the transmission device is connected to the gearbox, and the other end is connected to the trenching disc, characterized in that, The transmission device is the transmission device according to any one of claims 1 to 9.

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