Gear box with oil seepage prevention mechanism in inner cavity of box body

Abstract

The utility model relates to the technical field of oil seepage prevention, and discloses a gearbox with an oil seepage prevention mechanism in a box body inner cavity, which comprises a rotating shaft, two shells are arranged on the outer side of the rotating shaft, oil seal devices are arranged in the two shells, and each oil seal device comprises an oil collecting part; and the oil collecting part comprises a return pipe. According to the gear box with the oil seepage prevention mechanism in the box body inner cavity, by arranging the mounting bolt, the backing ring, the mounting groove, the oil seal cover, the sealing piece, an abutting ring, a first extrusion groove, a second extrusion groove, a containing groove and a groove, engine oil is blocked through the sealing piece, engine oil leakage is reduced, the mounting bolt is rotated, the oil seal cover is mounted, and the oil seepage prevention effect is achieved. After the inner wall of the sealing piece is abraded, the backing ring is taken down, the oil seal cover is installed again, the sealing piece is extruded and deformed, and the oil sealing effect of the sealing piece on the outer surface of the rotating shaft is improved; by arranging the sealing ring, the sealing performance of the inner wall of the oil seal cover and the outer surface of the rotating shaft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-oil leakage, in particular to a gearbox with an anti-oil leakage mechanism in the inner cavity of the box body. Background Technique

[0002] The speed reducer is a kind of gearbox, and its main function is to reduce the input speed and increase the output torque at the same time. The speed reducer is a special application of the gearbox. Both the speed reducer and the gearbox are devices that use the meshing of gears to transmit power and change the speed. The gearbox is a broader concept, including all devices that use gears for transmission.

[0003] The Chinese patent discloses a new type of anti-oil leakage speed reducer, with the publication number CN216789187U, which includes a main body. An external mounting plate is installed outside the main body shell. The external mounting plate and the main body shell are integrally formed. Internal fixing platforms are installed at both the upper and lower ends inside the main body shell. The internal fixing platforms are fixedly connected to the main body shell. There are two internal fixing platforms. Fixed sealing cylinders are installed at the upper end and one side inside the main body shell and the external mounting plate. The fixed sealing cylinders are fixedly connected to the main body shell and the external mounting plate. A sealing rubber pad is installed on the side of the fixed sealing cylinder close to the external mounting plate. A rotating shaft is installed inside the fixed sealing cylinder. The rotating shaft is connected to the fixed sealing cylinder and the internal fixing platform through bearings.

[0004] However, it still has the following disadvantages: The device uses an oil seal to seal between the gear rotating shaft and the inner wall of the main body shell. After long-term use of the oil seal, the inner diameter of the inner ring becomes larger, increasing the possibility of oil leakage between the inner wall of the oil seal and the rotating shaft. For this reason, we propose a gearbox with an anti-oil leakage mechanism in the inner cavity of the box body to solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gearbox with an anti-oil leakage mechanism in the inner cavity of the box body to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A gearbox with an anti-oil leakage mechanism in the inner cavity of the box body includes a rotating shaft. Two shells are arranged on the outer side of the rotating shaft. An oil seal device is arranged inside the two shells. The oil seal device includes an oil collecting part.

[0007] The oil collecting part includes a return pipe. Oil collecting grooves are opened on the inner walls of the two shells. The left end face of the return pipe is connected to the right end face of the lower shell and extends into the lower shell. The top surface of the return pipe fixedly penetrates the bottom surface of the lower shell and is connected to the inside of the lower oil collecting groove in a through manner.

[0008] An oil seal part is arranged inside the shell.

[0009] The oil seal part includes mounting bolts, an oil seal cover, and an abutting ring. Placement grooves are formed in the inner walls of both of the two housings. The abutting ring is arranged inside the two housings, and the outer surface of the abutting ring extends into the placement grooves. The left end of the oil seal cover extends to the inner sides of the two housings. A threaded groove is formed in the right end face of the housing. The outer surface of the left end of the mounting bolt threadedly penetrates the right end face of the oil seal cover and extends into the threaded groove. The outer surface of the mounting bolt is fixedly connected to the inner wall of the housing.

[0010] Further improvement lies in that the oil collecting part further includes an oil slinger and an arc-shaped oil guide plate. The oil slinger is fixedly sleeved on the outer surface of the rotating shaft, and the outer surface of the oil slinger extends into the oil collecting groove. By arranging the oil slinger, it is convenient to sling the oil moving to the right into the oil collecting groove, and then the oil is collected by the return pipe for reflux.

[0011] Further improvement lies in that the arc-shaped oil guide plate is sleeved outside the rotating shaft, the outer surface of the arc-shaped oil guide plate extends into the oil collecting groove, and the outer surface of the arc-shaped oil guide plate is fixedly connected to the right end face of the oil slinger. By arranging the arc-shaped oil guide plate, the oil dripping from the inner wall of the right-side housing of the oil slinger onto the rotating shaft and the arc-shaped oil guide plate is slung back onto the outer surface of the oil slinger.

[0012] Further improvement lies in that the oil seal part further includes a gasket ring, a sealing ring, and a seal. The seal is sleeved on the outer surface of the rotating shaft, and the outer surface of the seal is in extrusion contact with the inner wall of the housing. By arranging the seal, the space between the housing and the rotating shaft is sealed for oil.

[0013] Further improvement lies in that a second extrusion groove is formed in the left end face of the seal, a first extrusion groove is formed in the right end face of the seal. The outer surface of the right end of the abutting ring extends into the second extrusion groove and is in extrusion contact with the inner wall of the second extrusion groove. The outer surface of the left end of the oil seal cover extends into the first extrusion groove and is in extrusion contact with the inner wall of the first extrusion groove. By arranging the oil seal cover and the abutting ring, it is convenient to position the seal.

[0014] Further improvement lies in that oil seal grooves are formed in the inner walls of the two housings. The sealing ring is sleeved on the outer surface of the rotating shaft, and the outer surface of the seal extends into the oil seal groove and is in extrusion contact with the oil seal groove. By arranging the seal, the risk of oil leakage is reduced.

[0015] Further improvement lies in that a mounting groove is formed in the right end face of the housing. The left end face of the gasket ring extends into the mounting groove and is in extrusion contact with the inner wall of the mounting groove. By arranging the gasket ring, it is convenient to limit the position of the oil seal cover. Removing the gasket ring can make the oil seal cover move to the left, causing the seal to be extruded and deformed, improving the sealing performance between the rotating shaft and the housing.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The inner cavity of the box body is a gearbox equipped with an anti-oil leakage mechanism. By setting installation bolts, cushion rings, installation grooves, oil seal covers, seals, abutting rings, first extrusion grooves, second extrusion grooves and placement grooves, the device uses the seal to block the engine oil and reduce the leakage of the engine oil. Rotate the installation bolts to install the oil seal cover, so that the oil seal cover squeezes and positions the seal. When the inner wall of the seal is worn, remove the cushion ring, install the oil seal cover again, and deform the seal by extrusion to improve the sealing of the outer surface of the rotating shaft by the seal; by setting a sealing ring and an oil seal groove, the sealing performance between the inner wall of the oil seal cover and the outer surface of the rotating shaft is improved; by setting a return pipe, an oil slinger, an arc-shaped oil guide plate and an oil sump, when the engine oil passes through the bearing on the rotating shaft and moves to the right, it falls on the outer surface of the oil slinger, and the engine oil falling on the arc-shaped oil guide plate is thrown onto the oil slinger, and the oil slinger throws the engine oil into the oil sump, and the engine oil is collected through the return pipe. Brief Description of the Drawings

[0017] Figure 1 It is a top cross-sectional view of the three-dimensional structure of the oil seal device of the present utility model;

[0018] Figure 2 is Figure 1 the enlarged view of the structure at A in

[0019] Figure 3 is Figure 1 the enlarged view of the structure at B in

[0020] Figure 4 It is a schematic diagram of the partial structure of the oil collection part of the present utility model;

[0021] Figure 5 It is a partial cross-sectional view of the oil seal part of the present utility model.

[0022] In the figure: 1 housing, 2 oil seal device, 21 oil collection part, 22 oil seal part, 211 return pipe, 212 oil slinger, 213 arc-shaped oil guide plate, 214 oil sump, 221 installation bolt, 222 cushion ring, 223 installation groove, 224 sealing ring, 225 oil seal cover, 226 seal, 227 abutting ring, 228 first extrusion groove, 229 second extrusion groove, 220 placement groove, 201 oil seal groove, 3 rotating shaft. Specific Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer toFigures 1-5 , the present utility model provides a technical solution: a gearbox with an anti-oil leakage mechanism in the inner cavity of the box body, including a rotating shaft 3, and two shells 1 are arranged outside the rotating shaft 3. An oil seal device 2 is arranged inside the two shells 1, and the oil seal device 2 includes an oil collecting part 21;

[0025] The oil collecting part 21 includes a return pipe 211. Oil collecting grooves 214 are opened on the inner walls of the two shells 1. The left end face of the return pipe 211 is connected to the right end face of the lower shell 1 and extends into the lower shell 1. The top surface of the return pipe 211 fixedly penetrates through the bottom surface of the lower shell 1 and is connected to the inside of the lower oil collecting groove 214. The oil collecting part 21 further includes an oil slinger 212 and an arc-shaped oil guide plate 213;

[0026] The arc-shaped oil guide plate 213 is sleeved outside the rotating shaft 3, and the outer surface of the arc-shaped oil guide plate 213 extends into the oil collecting groove 214. The outer surface of the arc-shaped oil guide plate 213 is fixedly connected to the right end face of the oil slinger 212;

[0027] The oil slinger 212 is fixedly sleeved on the outer surface of the rotating shaft 3, and the outer surface of the oil slinger 212 extends into the oil collecting groove 214. By arranging the return pipe 211, the oil slinger 212, the arc-shaped oil guide plate 213 and the oil collecting groove 214, when the engine oil moves to the right through the bearing on the rotating shaft 3 and falls on the outer surface of the oil slinger 212, the engine oil falling on the arc-shaped oil guide plate 213 is thrown onto the oil slinger 212, and the oil slinger 212 throws the engine oil into the oil collecting groove 214, and the engine oil is collected through the return pipe 211;

[0028] An oil sealing part 22 is arranged inside the shell 1;

[0029] The oil sealing part 22 includes mounting bolts 221, an oil seal cover 225 and an abutting ring 227. Placing grooves 220 are opened on the inner walls of the two shells 1. The abutting ring 227 is arranged inside the two shells 1, and the outer surface of the abutting ring 227 extends into the placing grooves 220. The left end of the oil seal cover 225 extends into the inner sides of the two shells 1. A threaded groove is opened on the right end face of the shell 1. The left end outer surface of the mounting bolt 221 threadedly penetrates through the right end face of the oil seal cover 225 and extends into the threaded groove. The outer surface of the mounting bolt 221 is fixedly connected to the inner wall of the shell 1. The oil sealing part 22 further includes a gasket ring 222, a sealing ring 224 and a sealing member 226;

[0030] Oil sealing grooves 201 are opened on the inner walls of the two shells 1. The sealing ring 224 is sleeved on the outer surface of the rotating shaft 3, and the outer surface of the sealing member 226 extends into the oil sealing grooves 201 and is in extrusion contact with the oil sealing grooves 201. By arranging the sealing ring 224 and the oil sealing grooves 201, the sealing performance between the inner wall of the oil seal cover 225 and the outer surface of the rotating shaft 3 is improved;

[0031] The seal 226 is sleeved on the outer surface of the rotating shaft 3. The outer surface of the seal 226 is in extrusion contact with the inner wall of the housing 1. A second extrusion groove 229 is formed in the left end face of the seal 226, and a first extrusion groove 228 is formed in the right end face of the seal 226. The outer surface of the right end of the abutting ring 227 extends into the second extrusion groove 229 and is in extrusion contact with the inner wall of the second extrusion groove 229. The outer surface of the left end of the oil seal cover 225 extends into the first extrusion groove 228 and is in extrusion contact with the inner wall of the first extrusion groove 228.

[0032] An installation groove 223 is formed in the right end face of the housing 1. The left end face of the gasket ring 222 extends into the installation groove 223 and is in extrusion contact with the inner wall of the installation groove 223. By providing the installation bolt 221, the gasket ring 222, the installation groove 223, the oil seal cover 225, the seal 226, the abutting ring 227, the first extrusion groove 228, the second extrusion groove 229 and the placement groove 220, the device uses the seal 226 to block the engine oil and reduce the leakage of the engine oil. Rotate the installation bolt 221 to install the oil seal cover 225, so that the oil seal cover 225 extrudes and positions the seal 226. When the inner wall of the seal 226 is worn, remove the gasket ring 222, reinstall the oil seal cover 225, and deform the seal 226 by extrusion to improve the sealing performance of the seal 226 on the outer surface of the rotating shaft 3.

[0033] During use, the engine oil moves to the right through the bearing on the rotating shaft 3 and slowly moves to the outer surface of the arc-shaped oil guide plate 213. The rotating shaft 3 drives the oil slinger 212 to rotate, and the engine oil on the oil slinger 212 is slung into the inner part of the oil collecting groove 214. The engine oil adhered to the inner wall of the housing 1 on the right side of the oil slinger 212 falls on the arc-shaped oil guide plate 213. With the rotation of the arc-shaped oil guide plate 213, the engine oil moves back to the oil slinger 212 again and falls into the inner part of the oil collecting groove 214. The engine oil is collected through the return pipe 211. When the inner wall of the seal 226 is worn, remove the gasket ring 222, and the oil seal cover 225 extrudes and deforms the seal 226 to the left to improve the sealing performance of the seal 226 on the outer surface of the rotating shaft 3.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox with an anti-oil leakage mechanism in the inner cavity of the box body, including a rotating shaft (3), characterized in that: There are two housings (1) arranged on the outer side of the rotating shaft (3), and an oil seal device (2) is arranged inside the two housings (1). The oil seal device (2) includes an oil collecting part (21). The oil collecting part (21) includes a return pipe (211). Oil collecting grooves (214) are formed on the inner walls of the two housings (1). The left end face of the return pipe (211) is connected to the right end face of the lower housing (1) and extends into the lower housing (1). The top surface of the return pipe (211) fixedly penetrates the bottom surface of the lower housing (1) and is connected to the inside of the lower oil collecting groove (214) in a through manner. An oil seal part (22) is arranged inside the housing (1). The oil seal part (22) includes mounting bolts (221), an oil seal cover (225), and an abutting ring (227). Placing grooves (220) are formed on the inner walls of the two housings (1). The abutting ring (227) is arranged inside the two housings (1). The outer surface of the abutting ring (227) extends into the placing groove (220). The left end of the oil seal cover (225) extends to the inner sides of the two housings (1). A threaded groove is formed on the right end face of the housing (1). The left end outer surface of the mounting bolt (221) threadedly penetrates the right end face of the oil seal cover (225) and extends into the threaded groove. The outer surface of the mounting bolt (221) is fixedly connected to the inner wall of the housing (1).

2. The gearbox with an anti-oil-leakage mechanism in the inner cavity of the box according to claim 1, wherein: The oil collecting part (21) further includes an oil slinger (212) and an arc-shaped oil guide plate (213). The oil slinger (212) is fixedly sleeved on the outer surface of the rotating shaft (3). The outer surface of the oil slinger (212) extends into the oil collecting groove (214).

3. The gearbox with an anti-oil leakage mechanism in the inner cavity of the box according to claim 2, characterized in that: The arc-shaped oil guide plate (213) is sleeved on the outer side of the rotating shaft (3). The outer surface of the arc-shaped oil guide plate (213) extends into the oil collecting groove (214). The outer surface of the arc-shaped oil guide plate (213) is fixedly connected to the right end face of the oil slinger (212).

4. A gearbox with an anti-oil leakage mechanism in the inner cavity of the box according to claim 1, characterized in that: The oil seal part (22) further includes a gasket ring (222), a sealing ring (224), and a seal (226). The seal (226) is sleeved on the outer surface of the rotating shaft (3). The outer surface of the seal (226) is in pressing contact with the inner wall of the housing (1).

5. A gearbox with an anti-oil-leakage mechanism in the inner cavity of the box according to claim 4, characterized in that: A second pressing groove (229) is formed on the left end face of the seal (226). A first pressing groove (228) is formed on the right end face of the seal (226). The right end outer surface of the abutting ring (227) extends into the second pressing groove (229) and is in pressing contact with the inner wall of the second pressing groove (229). The left end outer surface of the oil seal cover (225) extends into the first pressing groove (228) and is in pressing contact with the inner wall of the first pressing groove (228).

6. The gearbox with an anti-oil leakage mechanism in the inner cavity of the box according to claim 4, characterized in that: Oil seal grooves (201) are formed on the inner walls of the two housings (1). The sealing ring (224) is sleeved on the outer surface of the rotating shaft (3). The outer surface of the seal (226) extends into the oil seal groove (201) and is in pressing contact with the oil seal groove (201).

7. A gearbox with an anti-oil leakage mechanism in the inner cavity of the box according to claim 4, characterized in that: An installation groove (223) is formed on the right end face of the housing (1). The left end face of the gasket ring (222) extends into the installation groove (223) and is in pressing contact with the inner wall of the installation groove (223).

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