Sealing structure of grain leveling robot

Abstract

The sealing structure of the grain leveling robot comprises a speed reducer (1), the speed reducer (1) is provided with an output shaft (2), the output shaft (2) is connected with a grain leveling driving wheel (3) of the grain leveling robot, a shell of the speed reducer (1) is provided with an axial through hole (4) in the axial direction of the output shaft (2), a first sealing ring (5) is installed at the position of the axial through hole (4), and the output shaft (2) is rotationally connected with the first sealing ring (5) in a sleeved mode. The axial through hole (4) is further provided with an end cover (6) installed in the axial direction of the axial through hole (4) from outside to inside, the end cover (6) is provided with a protection ring part (7) at the position of the annular end face of the outer side of the first sealing ring (5), and the protection ring part (7) is rotationally connected with the output shaft (2) in a sleeved mode. The sealing performance can be improved, and meanwhile the sealing ring can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field of flat grain robots, and specifically relates to a sealing structure of a flat grain robot. Background Art

[0002] A flat grain robot refers to a leveling device that walks in a granary to gradually level the piled-up grains to improve the capacity utilization rate of a grain storage container. Among them, there is a flat grain robot that adopts a structural scheme of flat grain driving wheels. The flat grain driving wheels are both walking components and flat grain components. For example, a segmented variable pitch spiral driving flat bin robot disclosed in a Chinese invention patent application with the publication number CN113396705A.

[0003] The flat grain robot includes a motor and a reducer. The reducer is provided with an output shaft, and the output shaft is connected to the flat grain driving wheels of the flat grain robot. Then, a sealing ring needs to be provided between the output shaft and the reducer to prevent grains and a large amount of dust from entering the interior of the reducer. However, the existing sealing ring is exposed on the surface of the reducer. On the one hand, it is prone to breakage, and on the other hand, the sealing performance needs to be improved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and propose a sealing structure of a flat grain robot, which is beneficial to improving the sealing performance and at the same time beneficial to protecting the sealing ring.

[0005] Compared with the prior art, the utility model proposes a sealing structure of a flat grain robot, which includes a reducer. The reducer is provided with an output shaft, and the output shaft is connected to the flat grain driving wheels of the flat grain robot. An axial through hole is provided in the housing of the reducer along the axial direction of the output shaft. A first sealing ring is installed at the axial through hole, and the output shaft is rotatably sleeved with the first sealing ring. An end cover is also installed at the axial through hole and is installed axially from the outside to the inside along the axial through hole. The end cover is provided with a protection ring portion at the outer circumferential end face of the first sealing ring, and the protection ring portion is rotatably sleeved with the output shaft.

[0006] After adopting the above structure, compared with the prior art, the utility model has the following advantages:

[0007] Through improvement, the present disclosure not only is provided with a sealing ring, but also the end cover is provided with a protection ring portion at the outer circumferential end face of the first sealing ring, and the protection ring portion is rotatably sleeved with the output shaft, thus forming two barriers. That is, the protection ring portion plays a certain blocking role, so that grains and a large amount of dust cannot directly and quickly reach the first sealing ring. When the grain particles are large, the grain particles simply cannot reach the first sealing ring to wear the sealing ring. Therefore, it is beneficial to improve the sealing performance. Due to the existence of the protection ring portion, grains and a large amount of dust cannot directly reach the first sealing ring to wear the sealing ring, so it is beneficial to protect the sealing ring.

[0008] In some embodiments, a positioning socket portion is provided on the inner side of the end cap extending into the housing, a positioning hole is provided in the axial through hole, and the positioning socket portion is sleeved and fitted with the positioning hole to position the end cap.

[0009] In some embodiments, an annular mounting groove is formed between the positioning socket portion and the protective ring portion, and the first sealing ring is installed in the annular mounting groove.

[0010] In some embodiments, the annular mounting groove includes an axial sealing surface provided by the inner peripheral surface of the positioning socket portion and a transverse sealing surface provided by the end surface of the protective ring portion. An annular groove is provided on the axial sealing surface, and the annular groove divides the axial sealing surface into multiple segments along the axial direction.

[0011] In some embodiments, an annular mating hole is provided on the outer periphery of the positioning hole of the axial through hole. A ring portion of the end cap located on the outer periphery of the positioning socket portion is sleeved and fitted with the annular mating hole, and a second sealing ring is provided between the end surface of the ring portion and the bottom surface of the annular mating hole.

[0012] In some embodiments, an annular groove is provided at one end of the first sealing ring facing away from the protective ring portion.

[0013] In some embodiments, the side wall of the annular groove on the side close to the output shaft is lower than the opposite side wall of the annular groove on the side far from the output shaft, and the thickness of the side wall is greater than the thickness of the opposite side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. 1 is a perspective view of a drive assembly of a grain leveling robot adopting the sealing structure of the present disclosure.

[0015] Figure 2 FIG. 2 is a perspective view showing the output shaft at one end of the speed reducer.

[0016] Figure 3 FIG. Figure 2 3 is a right view of the structure shown.

[0017] Figure 4 FIG. 4 is a sectional view taken along the line A-A.

[0018] Figure 5 FIG. 5 is a perspective view of a housing of a speed reducer.

[0019] Figure 6 FIG. 6 is a perspective view of an end cap.

[0020] Figure 7 FIG. 7 is a perspective view of the end cap after the first sealing ring is installed.

[0021] Description of the reference numerals: 1 - speed reducer, 2 - output shaft, 3 - grain leveling driving wheel, 4 - axial through hole, 5 - first sealing ring, 6 - end cover, 7 - protective ring part, 8 - positioning socket part, 9 - positioning hole, 10 - annular mounting groove, 11 - axial sealing surface, 12 - transverse sealing surface, 13 - annular groove, 14 - annular mating hole, 15 - ring part, 16 - second sealing ring, 17 - annular groove, 18 - side wall, 19 - opposite side wall. Detailed implementation manners

[0022] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation manners, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0023] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, the above terms should not be construed as limiting the present utility model.

[0024] As Figures 1 to 7 shown, there is a sealing structure of a grain leveling robot, including a speed reducer 1. The speed reducer 1 is provided with an output shaft 2, and the output shaft 2 is connected to the grain leveling driving wheel 3 of the grain leveling robot. An axial through hole 4 is arranged along the axial direction of the output shaft 2 on the housing of the speed reducer 1. A first sealing ring 5 is installed at the axial through hole 4. The output shaft 2 is rotatably sleeved with the first sealing ring 5. An end cover 6 is also installed at the axial through hole 4 and is installed from the outside to the inside along the axial direction of the axial through hole 4. The end cover 6 is provided with a protective ring part 7 at the outer annular end face of the first sealing ring 5, and the protective ring part 7 is rotatably sleeved with the output shaft 2.

[0025] The present disclosure hides the first sealing ring 5 inside by providing the protective ring part 7.

[0026] In this example, as Figure 4 shown, the output shaft 2 of the speed reducer 1 penetrates through the entire housing of the speed reducer 1 and extends out from both ends of the housing. Therefore, the first sealing ring 5 needs to be provided at both ends of the housing.

[0027] In some embodiments, as Figure 4As shown, the end cover 6 is provided with a positioning socket part 8 extending towards the inner side of the housing. The axial through hole 4 is provided with a positioning hole 9. The positioning socket part 8 and the positioning hole 9 are sleeved and matched to position the end cover 6. In this way, since the output shaft 2 passes through the axial through hole 4, when the positioning socket part 8 and the positioning hole 9 are sleeved and matched to position the end cover 6, it is beneficial for the protective ring part 7 of the end cover 6 to be rotatably sleeved with the output shaft 2, thereby reducing the clearance between the protective ring part 7 and the output shaft 2 that can be rotatably sleeved, and further improving the sealing performance.

[0028] In some embodiments, such as Figure 4 、 6 、7 shown, an annular installation groove 10 is formed between the positioning socket part 8 and the protective ring part 7, and the first sealing ring 5 is installed in the annular installation groove 10. In this way, it is beneficial for the convenient installation of the first sealing ring 5.

[0029] Furthermore, the annular installation groove 10 includes an axial sealing surface 11 provided by the inner peripheral surface of the positioning socket part 8 and a transverse sealing surface 12 provided by the end surface of the protective ring part 7. An annular groove 13 is provided on the axial sealing surface 11, and the annular groove 13 divides the axial sealing surface 11 into multiple segments along the axial direction. In this way, the annular groove 13 forms a partition. When dust enters accidentally after long-term use, it can be released into the annular groove 13, thereby prolonging the sealing performance.

[0030] In some embodiments, such as Figure 4 、 5 shown, the axial through hole 4 is provided with an annular mating hole 14 on the outer periphery of the positioning hole 9. The ring part 15 of the end cover 6 located on the outer periphery of the positioning socket part 8 is sleeved and matched with the annular mating hole 14, and a second sealing ring 16 is provided between the end surface of the ring part 15 and the bottom surface of the annular mating hole 14. In this way, further sealing is provided. Although the end surface of the ring part 15 and the bottom surface of the annular mating hole 14 are in a relatively static state, after the second sealing ring 16 is provided, it is beneficial to prevent dust from entering the housing between the end surface of the ring part 15 and the bottom surface of the annular mating hole 14.

[0031] In some embodiments, such as Figure 4 、 7 shown, an annular groove 17 is provided at one end of the first sealing ring 5 facing away from the protective ring part 7. In this way, the existence of the annular groove 17 is beneficial for the first sealing ring 5 to have a certain amount of deformation, so that the first sealing ring 5 can better fit and seal in the annular installation groove 10 and on the output shaft 2. In addition, the annular groove 17 can also accommodate a certain amount of lubricating grease, which is beneficial for the movement inside the speed reducer 1.

[0032] Furthermore, as Figure 4As shown, the side wall 18 of the annular groove 17 closer to the output shaft 2 is lower than the opposite side wall 19 of the annular groove 17 farther from the output shaft 2, and the thickness of the side wall 18 is greater than that of the opposite side wall 19. In this way, the side wall 18 is thicker to provide wear resistance, and can better fit and seal the output shaft 2 and adapt to rotational sealing. At the same time, the side wall 18 has a certain deformation ability, while the opposite side wall 19 has a larger fitting area and a greater deformation ability to fit on the axial sealing surface 11.

[0033] When understanding the present disclosure, if necessary, the above structure can refer to other embodiments / attachments Figure 1 and it is understood that no further elaboration will be provided here.

[0034] The above are only illustrative embodiments of the present utility model. Therefore, all equivalent changes or modifications made according to the structure, features, and principles described in the protection scope of the present utility model patent are included in the protection scope of the present utility model patent.

Claims

1. A sealing structure of a grain-leveling robot, comprising a reducer (1), wherein the reducer (1) is provided with an output shaft (2), wherein the output shaft (2) is connected to a grain-leveling driving wheel (3) of the grain-leveling robot, and wherein: The housing of the reducer (1) is provided with an axial through hole (4) along the axial direction of the output shaft (2); a first sealing ring (5) is installed at the axial through hole (4); the output shaft (2) and the first sealing ring (5) are rotatably sleeved; the axial through hole (4) is also provided with an end cover (6) installed from the outside to the inside along the axial direction of the axial through hole (4); a protective ring portion (7) is provided at the outer annular end surface of the first sealing ring (5); the protective ring portion (7) is rotatably sleeved with the output shaft (2).

2. The sealing structure of the grain leveling robot according to claim 1, characterized in that: The end cover (6) is provided with a positioning sleeve portion (8) extending toward the inner side of the shell, the axial through hole (4) is provided with a positioning hole (9), and the positioning sleeve portion (8) is sleeved and matched with the positioning hole (9) to position the end cover (6).

3. The sealing structure of the grain leveling robot according to claim 2, characterized in that: An annular mounting groove (10) is formed between the positioning sleeve portion (8) and the protective ring portion (7), and the first sealing ring (5) is installed in the annular mounting groove (10).

4. The sealing structure of the grain leveling robot according to claim 3, characterized in that: The annular installation groove (10) comprises an axial sealing surface (11) provided by the inner circumferential surface of the positioning sleeve portion (8) and a transverse sealing surface (12) provided by the end surface of the protective ring portion (7). An annular groove (13) is provided on the axial sealing surface (11), and the annular groove (13) divides the axial sealing surface (11) into multiple sections along the axial direction.

5. The sealing structure of the grain leveling robot according to claim 2, characterized in that: The axial through hole (4) is provided with an annular matching hole (14) on the outer periphery of the positioning hole (9); the ring portion (15) of the end cover (6) located on the outer periphery of the positioning sleeve portion (8) is sleeve-fitted with the annular matching hole (14); and a second sealing ring (16) is provided between the end surface of the ring portion (15) and the bottom surface of the annular matching hole (14).

6. The sealing structure of the grain leveling robot according to claim 1 or 3, characterized in that: An annular groove (17) is provided at one end of the first sealing ring (5) that faces away from the protective ring portion (7).

7. The sealing structure of the grain leveling robot according to claim 6, characterized in that: The side wall (18) of the annular groove (17) close to the output shaft (2) is lower than the opposite side wall (19) of the annular groove (17) away from the output shaft (2), and the thickness of the side wall (18) is greater than the thickness of the opposite side wall (19).

Images