Hub reduction gear

Abstract

The utility model relates to the technical field of hub reduction gears, in particular to a hub reduction gear which comprises a base, the bottom of the base is connected with the inner bottom wall of an outer gear piece in a clamped mode, the outer wall of the outer gear piece is connected with the outer wall of a transmission piece in a meshed mode, and after a sun gear is connected to the outer wall of an output shaft, the output shaft drives the sun gear to start to rotate. Due to the rotation of the sun gear, the planet gears meshed with the sun gear start to revolve around the sun gear, and meanwhile, the planet gears are in meshed connection with the gear ring, so that the planet gears can revolve and rotate stably under the support of the tapered roller bearings, and sliding friction is replaced by rolling friction of the tapered roller bearings; by means of the planetary gear, energy loss and heat generation can be remarkably reduced, the planetary gear can transmit large torque at a small rotating speed, power is finally transmitted to external equipment through the output shaft in the sun gear through transmission and conversion of the planetary gear, linear output is achieved, efficient power transmission is achieved, and the energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel-side reducers, in particular to a wheel-side reducer. Background Art

[0002] With the development of economy and the rapid development of road transportation, the transportation capacity and cargo volume of heavy-duty vehicles and large buses are gradually increasing. Therefore, the application prospect of wheel reducers in my country is very broad. In addition, foreign developed countries started the research on automobile wheel reducers relatively early and have achieved product maturity, which also provides reference for the research and development and application of wheel reducers in my country.

[0003] Currently, most wheel-side reducers on the market may have more conducting parts, resulting in greater energy loss, thereby reducing transmission efficiency. In addition, due to the structural characteristics of the wheel-side reducer, its heat dissipation effect may be poor. When running at high load, a higher temperature may be generated inside the reducer, thus affecting its performance and life. Utility Model Content

[0004] The purpose of the present invention is to provide a wheel-side reducer to solve the problem of large energy loss of most wheel-side reducers mentioned in the above background technology. To achieve the above purpose, the present invention provides the following technical solution: a wheel-side reducer, including a base, the bottom of the base is engaged with the inner bottom wall of the external gear member, the outer wall of the external gear member is meshed with the outer wall of the transmission member, and the inner wall of the transmission member is rotatably connected with the outer wall of the bearing member.

[0005] The inner wall of the bearing component is rotatably connected to the outer wall of the locking component, and the back surface of the locking component is movably abutted against the front surface of the planetary wheel carrier.

[0006] Preferably, the base is composed of a gear ring seat and an oil filling pipe, and an oil storage cavity is opened on the back side of the gear ring seat, and the inner wall of the oil storage cavity is fixedly connected to the outer wall of the oil filling pipe.

[0007] Preferably, the external gear component includes a gear ring, a baffle and a hexagonal head bolt with a hole, and the inner wall of the gear ring is fixedly connected to the inner wall of the baffle by the hexagonal head bolt with a hole, a steel wire is arranged between the gear ring and the baffle, and the inner bottom wall of the gear ring is snap-connected with the bottom outer wall of the gear ring seat.

[0008] Preferably, the transmission member consists of a sun gear and a planetary gear, and the outer wall of the sun gear is meshed with the outer wall of the planetary gear, the outer wall of the planetary gear away from the sun gear is meshed with the outer wall of the gear ring, and an output shaft is arranged inside the sun gear.

[0009] Preferably, the bearing component includes two tapered roller bearings, an inner spacer, an elastic retaining ring for a hole and an outer spacer, and an inner spacer is arranged near the center between the two tapered roller bearings, an elastic retaining ring for a hole and an outer spacer are arranged away from the center between the two tapered roller bearings, and the front side of the elastic retaining ring for the hole is movably abutted against the back side of the outer spacer, and the outer walls of the two tapered roller bearings are rotatably connected to the inner wall of the planetary gear.

[0010] Preferably, the locking member is composed of a first hexagonal head bolt, a gasket, an O-ring, an I-type non-metallic insert hexagonal locking nut, a planetary gear shaft and a spacer, and a gasket is provided on the outer wall of the first hexagonal head bolt, an O-ring is provided on the front side of the gasket, and the outer wall of the first hexagonal head bolt away from the gasket is threadedly connected to the inner wall of the I-type non-metallic insert hexagonal locking nut, the outer wall at the center of the first hexagonal head bolt is threadedly connected to the inner wall of the planetary gear shaft, and a spacer is provided on the outer wall of the planetary gear shaft, and the outer walls of the planetary gear shaft are rotatably connected to the inner walls of two tapered roller bearings respectively.

[0011] Preferably, the planetary wheel carrier includes a frame body, a thrust cover, a sealing gasket and a second hexagonal head bolt, and the inner walls of the frame body, the thrust cover and the sealing gasket are fixedly connected by the second hexagonal head bolt, and a spring washer is arranged between the second hexagonal head bolt and the thrust cover, the inner wall of the frame body away from the center is fixedly connected to the inner wall of the planetary wheel shaft by the first hexagonal head bolt, and a gasket and an O-ring are arranged between the frame body and the first hexagonal head bolt, and the front side of the frame body is movably abutted against the back side of the spacer ring.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, after the sun gear is connected to the outer wall of the output shaft, the output shaft drives the sun gear to start rotating. Due to the rotation of the sun gear, the planetary gear meshing with it starts to revolve around the sun gear. At the same time, the planetary gear is also meshed and connected with the gear ring. Therefore, the planetary gear can revolve and rotate stably under the support of the tapered roller bearing. The rolling friction of the tapered roller bearing replaces the sliding friction, which can significantly reduce energy loss and heat generation, so that the planetary gear can transmit a larger torque at a lower speed. After the transmission and conversion of the planetary gear, the power is finally transmitted to the external equipment through the output shaft inside the sun gear, realizing linear output, and the efficient power transmission reduces energy loss.

[0014] In the utility model, the O-ring is installed on the front side of the gasket, and its function is to provide sealing to prevent lubricating oil or other liquids from leaking from the bolt connection. The elasticity and sealing performance of the O-ring ensure that an effective seal can be maintained even in the case of vibration or pressure changes. The oil filling pipe is used to inject lubricating oil into components such as gears or bearings. The lubricating oil reduces the friction and wear between the gears, and plays a role in cooling and cleaning, which helps to keep the inside of the reducer clean and operate normally, and improves the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is an exploded view of the utility model;

[0018] Figure 4 It is an exploded view of the bearing component and the locking component in the utility model.

[0019] In the figure: 1, base; 101, gear ring seat; 102, oil filling pipe; 2, external gear part; 201, gear ring; 202, baffle; 203, hexagonal head bolt with hole; 3, transmission part; 301, sun gear; 302, planetary gear; 4, bearing part; 401, tapered roller bearing; 402, inner spacer; 403, elastic retaining ring for hole; 404, outer spacer; 5, locking part; 501, first hexagonal head bolt; 502, gasket; 503, O-ring; 504, I-type non-metallic insert hexagonal locking nut; 505, planetary gear shaft; 506, spacer; 6, planetary gear carrier; 601, frame; 602, thrust cover; 603, sealing gasket; 604, second hexagonal head bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a wheel-side reducer, including a base 1, the bottom of the base 1 is engaged with the inner bottom wall of the external gear part 2, the outer wall of the external gear part 2 is meshed with the outer wall of the transmission part 3, and the inner wall of the transmission part 3 is rotatably connected with the outer wall of the bearing part 4.

[0022] The inner wall of the bearing member 4 is rotatably connected to the outer wall of the locking member 5 , and the back surface of the locking member 5 is movably abutted against the front surface of the planetary wheel carrier 6 .

[0023] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the base 1 is composed of a ring gear seat 101 and an oil filling pipe 102, and an oil storage chamber is opened on the back of the ring gear seat 101. The inner wall of the oil storage chamber is fixedly connected to the outer wall of the oil filling pipe 102. The ring gear seat 101 provides a foundation for installation, and the oil filling pipe 102 is used to inject lubricating oil into components such as gears or bearings. The lubricating oil reduces the friction and wear between the gears, and plays a role in cooling and cleaning, which helps to keep the inside of the reducer clean and operate normally.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the external gear member 2 includes a gear ring 201, a baffle 202 and a hexagonal head bolt 203 with a hole, and the inner wall of the gear ring 201 is fixedly connected to the inner wall of the baffle 202 by the hexagonal head bolt 203 with a hole, a steel wire is arranged between the gear ring 201 and the baffle 202, and the inner bottom wall of the gear ring 201 is snap-connected with the bottom outer wall of the gear ring seat 101, the baffle 202 is used to protect the gear ring 201 to prevent it from being directly impacted or collided by external objects, and the baffle 202 can also be used as a reference surface for installation or positioning, and the hexagonal head bolt 203 is used to firmly connect the gear ring 201 and the baffle 202 together, which can withstand large torque and load, and is also convenient for disassembly or maintenance when necessary.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the transmission member 3 is composed of a sun gear 301 and a planetary gear 302, and the outer wall of the sun gear 301 is meshed and connected with the outer wall of the planetary gear 302, the outer wall of the planetary gear 302 away from the sun gear 301 is meshed and connected with the outer wall of the gear ring 201, and an output shaft is arranged inside the sun gear 301. After the sun gear 301 is connected to the outer wall of the output shaft, the output shaft drives the sun gear 301 to start rotating. Due to the rotation of the sun gear 301, the planetary gear 302 meshed with it starts to revolve around the sun gear 301, and the planetary gear 302 is also meshed and connected with the gear ring 201. Therefore, the planetary gear 302 rotates while revolving, so that the planetary gear 302 can transmit a large torque at a relatively small speed. After the transmission and conversion of the planetary gear 302, the power is finally transmitted to the external device through the output shaft inside the sun gear 301, so that the linear output is realized, and the efficient power transmission reduces the energy loss.

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the bearing member 4 includes two tapered roller bearings 401, an inner spacer 402, a hole elastic ring 403 and an outer spacer 404, and the inner spacer 402 is arranged near the center between the two tapered roller bearings 401, and the hole elastic ring 403 and the outer spacer 404 are arranged away from the center between the two tapered roller bearings 401, and the front side of the hole elastic ring 403 is movably abutted against the back side of the outer spacer 404, and the outer walls of the two tapered roller bearings 401 are rotatably connected to the inner wall of the planetary gear 302, and the planetary gear 302 can stably revolve and rotate under the support of the tapered roller bearings 401. By replacing the sliding friction with the rolling friction of the tapered roller bearings 401, the energy loss and heat generation can be significantly reduced, thereby improving the transmission efficiency and service life, and the axial component composed of the inner spacer 402, the hole elastic ring 403 and the outer spacer 404 can enhance the stability of the structure, thereby ensuring the normal operation of the transmission system.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the locking member 5 is composed of a first hexagonal bolt 501, a gasket 502, an O-ring 503, an I-type non-metallic insert hexagonal locking nut 504, a planetary gear shaft 505 and a spacer 506, and the outer wall of the first hexagonal bolt 501 is provided with a gasket 502, the front of the gasket 502 is provided with an O-ring 503, and the outer wall of the first hexagonal bolt 501 away from the gasket 502 is threadedly connected with the inner wall of the I-type non-metallic insert hexagonal locking nut 504, and the outer wall at the center of the first hexagonal bolt 501 is threadedly connected with the inner wall of the planetary gear shaft 505. Threaded connection, and the outer wall of the planetary shaft 505 is provided with a spacer 506, the outer wall of the planetary shaft 505 is rotatably connected with the inner walls of the two tapered roller bearings 401 respectively, the first hexagonal head bolt 501 fixes the planetary shaft 505 to prevent the planetary shaft 505 from loosening, and the O-ring 503 is installed on the front side of the gasket 502, and its function is to provide sealing to prevent lubricating oil or other liquids from leaking from the bolted connection. The elasticity and sealing performance of the O-ring 503 ensure that an effective seal can be maintained even in the case of vibration or pressure changes.

[0028] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the planetary wheel carrier 6 includes a frame body 601, a thrust cover 602, a sealing gasket 603 and a second hexagonal bolt 604, and the inner walls of the frame body 601, the thrust cover 602 and the sealing gasket 603 are fixedly connected by the second hexagonal bolt 604, and a spring washer is arranged between the second hexagonal bolt 604 and the thrust cover 602, and the inner wall of the frame body 601 away from the center is fixedly connected to the inner wall of the planetary wheel shaft 505 by the first hexagonal bolt 501, and a gasket 502 and an O-ring are arranged between the frame body 601 and the first hexagonal bolt 501 503, the front side of the frame body 601 is movably abutted against the back side of the spacer ring 506, and the sealing gasket 603 and the thrust cover 602 together constitute the sealing structure inside the planetary wheel carrier, which prevents the leakage of lubricating oil or other working media, and also prevents external impurities from entering the interior of the planetary wheel carrier, thereby ensuring the normal operation of the transmission system. The spring washer arranged between the thrust cover 602 and the second hexagonal head bolt 604 can alleviate the stress caused by vibration or impact to a certain extent, protect the planetary wheel carrier and its internal components from damage, and improve the service life of the equipment.

[0029] The use method and advantages of the utility model: When the wheel reducer is working, the working process is as follows:

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, after the sun gear 301 is connected to the outer wall of the output shaft, the output shaft drives the sun gear 301 to start rotating. Due to the rotation of the sun gear 301, the planetary gear 302 meshing therewith starts to revolve around the sun gear 301. At the same time, the planetary gear 302 is also meshed and connected with the gear ring 201. Therefore, the planetary gear 302 can stably revolve and rotate under the support of the tapered roller bearing 401. The rolling friction of the tapered roller bearing 401 replaces the sliding friction, which can significantly reduce energy loss and heat generation, so that the planetary gear 302 can transmit a larger torque at a lower speed. After the transmission and conversion of the planetary gear 302, the power is finally transmitted to the external device through the output shaft inside the sun gear 301, realizing linear output, and efficient power transmission reduces energy loss. The O-ring 503 is installed on the front side of the gasket 502. Its function is to provide a seal to prevent lubricating oil or other liquids from leaking from the bolted connection. The elasticity and sealing performance of the O-ring 503 ensure that an effective seal can be maintained even in the case of vibration or pressure changes. The oil filling pipe 102 is used to inject lubricating oil into components such as gears or bearings. The lubricating oil reduces the friction and wear between the gears, and plays a cooling and cleaning role, which helps to keep the inside of the reducer clean and operate normally, thereby increasing the service life of the equipment.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A wheel reducer, comprising a base (1), characterized in that: The bottom of the base (1) is engaged with the inner bottom wall of the external gear member (2), the outer wall of the external gear member (2) is meshed with the outer wall of the transmission member (3), and the inner wall of the transmission member (3) is rotatably connected with the outer wall of the bearing member (4); The inner wall of the bearing member (4) is rotatably connected to the outer wall of the locking member (5), and the back surface of the locking member (5) is movably abutted against the front surface of the planetary wheel carrier (6).

2. A wheel reducer according to claim 1, characterized in that: The base (1) is composed of a gear ring seat (101) and an oil filling pipe (102), and an oil storage cavity is provided on the back of the gear ring seat (101), and the inner wall of the oil storage cavity is fixedly connected to the outer wall of the oil filling pipe (102).

3. A wheel reducer according to claim 2, characterized in that: The external gear member (2) comprises a gear ring (201), a baffle (202) and a hexagonal head bolt with a hole (203), and the inner wall of the gear ring (201) is fixedly connected to the inner wall of the baffle (202) via the hexagonal head bolt with a hole (203), a steel wire is arranged between the gear ring (201) and the baffle (202), and the inner bottom wall of the gear ring (201) is snap-connected to the bottom outer wall of the gear ring seat (101).

4. A wheel reducer according to claim 3, characterized in that: The transmission member (3) is composed of a sun gear (301) and a planetary gear (302), and the outer wall of the sun gear (301) is meshedly connected with the outer wall of the planetary gear (302), the outer wall of the planetary gear (302) away from the sun gear (301) is meshedly connected with the outer wall of the gear ring (201), and an output shaft is arranged inside the sun gear (301).

5. A wheel reducer according to claim 4, characterized in that: The bearing member (4) comprises two tapered roller bearings (401), an inner spacer (402), a hole elastic ring (403) and an outer spacer (404), wherein the inner spacer (402) is arranged near the center between the two tapered roller bearings (401), and the hole elastic ring (403) and the outer spacer (404) are arranged away from the center between the two tapered roller bearings (401), and the front side of the hole elastic ring (403) is movably abutted against the back side of the outer spacer (404), and the outer walls of the two tapered roller bearings (401) are rotatably connected to the inner wall of the planetary gear (302).

6. A wheel reducer according to claim 5, characterized in that: The locking member (5) is composed of a first hexagonal bolt (501), a gasket (502), an O-ring (503), an I-type non-metallic insert hexagonal locking nut (504), a planetary gear shaft (505) and a spacer (506), wherein the outer wall of the first hexagonal bolt (501) is provided with a gasket (502), the front surface of the gasket (502) is provided with an O-ring (503), and the outer wall of the first hexagonal bolt (501) away from the gasket (502) is threadedly connected to the inner wall of the I-type non-metallic insert hexagonal locking nut (504), the outer wall at the center of the first hexagonal bolt (501) is threadedly connected to the inner wall of the planetary gear shaft (505), and the outer wall of the planetary gear shaft (505) is provided with a spacer (506), and the outer wall of the planetary gear shaft (505) is rotatably connected to the inner walls of two tapered roller bearings (401) respectively.

7. A wheel reducer according to claim 6, characterized in that: The planetary wheel carrier (6) comprises a frame body (601), a thrust cover (602), a sealing gasket (603) and a second hexagonal head bolt (604), and the inner walls of the frame body (601), the thrust cover (602) and the sealing gasket (603) are fixedly connected by the second hexagonal head bolt (604), and a spring washer is arranged between the second hexagonal head bolt (604) and the thrust cover (602), the inner wall of the frame body (601) away from the center is fixedly connected to the inner wall of the planetary wheel shaft (505) by the first hexagonal head bolt (501), and a gasket (502) and an O-ring (503) are arranged between the frame body (601) and the first hexagonal head bolt (501), and the front surface of the frame body (601) is movably abutted against the back surface of the spacer (506).

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