A new energy trailer car drive axle

Abstract

The application discloses a new energy trailer car drive axle with a centrally arranged axle, relates to the technical field of drive axles, and comprises an axle housing, half axle housings are arranged on the two sides of the axle housing, a half axle sleeve is arranged at one end of the half axle housing, and a half axle rod is arranged in the half axle housing. The new energy trailer car drive axle with a centrally arranged axle is provided with a connecting mechanism, so that the connecting sleeve and the half axle rod are bent when the connecting sleeve and the half axle rod are driven to follow the bumping, and the transmission shaft slides left and right in the connecting sleeve in order to adapt to the length. At this time, the damper and the spring are matched to buffer and absorb the energy of the transmission shaft. The design makes the axle housing part of the drive axle, the transmission shaft and the wheel part of the wheel mechanism maintain a transmission state while being in a flexible connection when bumping. Therefore, when the trailer is subjected to vibration, the vibration between the transmission shaft and the axle housing does not interact, the damage to the drive axle is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of drive axle technology, specifically to a center-axle drive axle for new energy trailers. Background Technology

[0002] A center-drive axle is an electric drive axle positioned between the two wheels of a vehicle. Primarily used in four-wheel drive vehicles, it offers better traction and load-bearing capacity. Utilizing a combination of multiple gears, it enhances vehicle stability and handling. Center-drive axles are widely used in new energy trailers. New energy trailers, especially electric trailers, are primarily powered by an electric motor. When the motor is positioned in the middle of the vehicle, i.e., at the center-drive axle location, the motor's power can be transmitted more directly to the wheels, improving transmission efficiency.

[0003] Traditional mid-drive axles are subject to significant bumps when facing complex road conditions. When bumps occur, the trailer's suspension system needs to absorb energy and dampen the vibrations. However, the long drive shaft inside the drive axle is difficult to be buffered immediately when subjected to vibrations, and continuous vibrations can easily cause severe wear or even failure of the drive axle.

[0004] Therefore, we propose a center-axle drive axle for new energy trailers to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a center-axle drive axle for new energy trailers, in order to solve the problem that traditional center-axle drive axles, as mentioned in the background art, are subject to significant bumps when facing complex road conditions. When bumps occur, the trailer's suspension system needs to absorb energy and dampen the vibration. However, the long-span drive shaft inside the drive axle is difficult to be buffered immediately when subjected to vibration, and continuous vibration can easily cause severe wear or even failure of the drive axle.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a center-axle new energy trailer drive axle, comprising an axle housing, half-shaft housings installed on both sides of the axle housing, a half-shaft sleeve installed at one end of the half-shaft housing, a half-shaft rod disposed inside the half-shaft housing, a connecting mechanism disposed at one end of the half-shaft rod, a transmission mechanism disposed on one side of the connecting mechanism, the connecting mechanism comprising a first connecting seat and a second connecting seat, a first connecting shaft fixedly connected between the inner surface walls of the first connecting seat, a second connecting shaft fixedly connected between the inner surface walls of the second connecting seat, a connecting member sleeved between the outer surfaces of the first connecting shaft and the second connecting shaft, and the first connecting seat being connected to one end of the half-shaft rod.

[0007] Preferably, a connecting bearing is fixedly connected to the outer surface of the half shaft, a bearing bracket is fixedly connected to the outer surface of the connecting bearing, the outer surface of the bearing bracket is connected to the inner wall of the half shaft housing, and a plurality of tapered holes are equidistantly opened on the outer surface of the bearing bracket.

[0008] Preferably, the transmission mechanism includes a connecting sleeve, which is connected to a second connecting seat. A damper is fixedly connected inside the connecting sleeve, and a transmission shaft is fixedly connected to one end of the damper. A spring is fixedly connected between the end face of the transmission shaft and the inner wall of the connecting sleeve.

[0009] Preferably, the inner wall of the connecting sleeve is provided with multiple inner sliding grooves at equal intervals, and the outer surface of the drive shaft is fixedly connected with multiple inner sliding blocks at equal intervals, the inner sliding blocks and the inner sliding grooves cooperating with each other.

[0010] Preferably, a sealing ring is fixedly connected between the inner surface walls of the half-shaft sleeve near the outer end, and a spherical groove is formed between the inner surface walls of the sealing ring. A spherical sleeve is movably disposed inside the spherical groove, and the outer surface of the drive shaft slides through the outer surface of the spherical sleeve and extends to the outside of the half-shaft sleeve.

[0011] Preferably, a first drain pipe is fixedly connected to the rear surface of one of the half-shaft sleeves, and a second drain pipe is fixedly connected to the rear surface of the other half-shaft sleeve. A circulation pump is provided at one end of the second drain pipe, and the input end of the circulation pump is fixedly connected to one end of the second drain pipe. A connecting pipe is fixedly connected to the output end of the circulation pump, and a filter mechanism is provided between the end faces of the connecting pipe and the first drain pipe.

[0012] Preferably, the filtration mechanism includes a T-shaped shell, the interior of which is hollow and all three ends are open. A circular bottom is inserted inside the T-shaped shell, and a semi-circular filter is fixedly connected to the top of the circular bottom. Multiple filter holes are arranged on the outer surface of the semi-circular filter.

[0013] Preferably, a circular plug is threadedly connected inside the T-shaped shell above the semi-circular filter, the bottom of the circular plug abuts against the top of the semi-circular filter, and a transparent circular bottom is fixedly connected between the inner surface walls of the circular plug near the bottom.

[0014] Preferably, a pull rod is fixedly connected between the inner surface walls of the circular block near the top, and a threaded cap is threadedly connected to the outer surface of the T-shaped shell near the top.

[0015] Preferably, the front surface of the axle housing is fitted with a main drive housing, and the opposite end faces of the two half shafts pass through the interior of the half shaft housing and extend into the interior of the main drive housing.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting up a connecting mechanism, the connecting sleeve and half-shaft will bend with the bumps during transmission. The drive shaft will slide left and right inside the connecting sleeve to adapt to the length. At this time, the damper and spring work together to buffer and absorb the energy of the drive shaft. This design allows the axle housing of the drive axle, the drive shaft and the wheel mechanism to maintain the transmission state while being flexibly connected during bumps. Therefore, when the trailer is subjected to vibration, the vibration between the drive shaft and the axle housing will not interact with each other, reducing damage to the drive axle and improving its service life.

[0018] 2. By starting the circulation pump, the lubricating oil inside the axle housing flows to the left or right. When the lubricating oil moves to the left, it passes through the first drain pipe, the filter mechanism, and the second drain pipe before returning to the inside of the axle housing. During the flow, the smaller diameter end of the tapered hole on the surface of the two bearing brackets inside the drive axle faces the two half-shaft sleeves. This makes it difficult for larger impurities to enter the axle housing through the smaller opening of the tapered hole when the lubricating oil flows inside the axle housing, main drive housing, half-shaft housing, and half-shaft sleeves. Conversely, impurities inside the axle housing are easily discharged with the lubricating oil through the larger opening of the tapered hole into the half-shaft sleeves. As a result, most of the impurities inside the axle housing are discharged to other parts of the drive axle during the lubricating oil circulation process, ensuring the cleanliness and lubrication effect of the lubricating oil inside the axle housing, thereby improving the service life of the axle housing and its internal components.

[0019] 3. When the lubricating oil passes through the T-shaped housing in the filter mechanism, the semi-circular filter on the circular bottom will block impurities. Depending on the orientation of the semi-circular filter, impurities can be blocked inside the first drain pipe or connecting pipe, ensuring the lubrication effect of the lubricating oil on the drive axle. After rotating and removing the threaded cover, the content of impurities blocked in the lubricating oil can be observed through the transparent circular bottom inside the circular plug, making it easy to determine whether the lubricating oil needs to be replaced. This effectively avoids the problem of wasting lubricating oil by replacing it too early, and the problem of reducing the service life of the drive axle by replacing it too late. Attached Figure Description

[0020] Figure 1 This is a perspective view of a center-axle new energy trailer drive axle according to the present invention;

[0021] Figure 2 This is a cross-sectional view of a center-axle new energy trailer drive axle according to the present invention.

[0022] Figure 3 This is a schematic diagram of the half-shaft sleeve structure of a center-axle new energy trailer vehicle drive axle according to the present invention;

[0023] Figure 4 This is a partial structural schematic diagram of a center-axle new energy trailer drive axle according to the present invention;

[0024] Figure 5 This is a schematic diagram of the connection mechanism of the drive axle of a center-axle new energy trailer according to the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission mechanism structure of a center-axle new energy trailer drive axle according to the present invention;

[0026] Figure 7 This is a schematic diagram of the bearing bracket structure of a center-axle new energy trailer vehicle drive axle according to the present invention;

[0027] Figure 8 This is a schematic diagram of the connecting pipe structure of a center-axle new energy trailer drive axle according to the present invention;

[0028] Figure 9 This is a schematic diagram of the filter mechanism structure of a center-axle new energy trailer drive axle according to the present invention.

[0029] In the picture:

[0030] 1. Axle housing; 11. Main drive housing; 12. Half-shaft housing; 13. Half-shaft sleeve; 2. Half-shaft rod; 21. Bearing bracket; 22. Tapered hole; 23. Connecting bearing; 3. Connecting mechanism; 301. First connecting seat; 302. First connecting shaft; 303. Second connecting seat; 304. Second connecting shaft; 305. Connecting piece; 4. Transmission mechanism; 401. Connecting sleeve; 402. Inner groove; 403. Drive shaft ; 404, Inner slider; 405, Damper; 406, Spring; 5, Sealing ring; 51, Spherical groove; 52, Spherical sleeve; 6, First drain pipe; 61, Connecting pipe; 62, Circulation pump; 63, Second drain pipe; 7, Filtering mechanism; 701, T-shaped shell; 702, Circular bottom; 703, Semi-circular filter plate; 704, Circular block; 705, Pull rod; 706, Transparent round bottom; 707, Threaded cap. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-9The present invention provides a technical solution: a center-axle new energy trailer drive axle, including an axle housing 1, half-shaft housings 12 are installed on both sides of the axle housing 1, a half-shaft sleeve 13 is installed at one end of the half-shaft housing 12, a half-shaft rod 2 is provided inside the half-shaft housing 12, a connecting mechanism 3 is provided at one end of the half-shaft rod 2, a transmission mechanism 4 is provided on one side of the connecting mechanism 3, the connecting mechanism 3 includes a first connecting seat 301 and a second connecting seat 303, a first connecting shaft 302 is fixedly connected between the inner surface walls of the first connecting seat 301, a second connecting shaft 304 is fixedly connected between the inner surface walls of the second connecting seat 303, a connecting member 305 is sleeved between the outer surfaces of the first connecting shaft 302 and the second connecting shaft 304, and the first connecting seat 301 is connected to one end of the half-shaft rod 2.

[0033] like Figure 2 and Figure 4 As shown, a connecting bearing 23 is fixedly connected to the outer surface of the half-shaft 2, and a bearing bracket 21 is fixedly connected to the outer surface of the connecting bearing 23. The outer surface of the bearing bracket 21 is connected to the inner wall of the half-shaft housing 12. Multiple tapered holes 22 are equidistantly opened on the outer surface of the bearing bracket 21. The bearing bracket 21 is mainly used to support the connecting bearing 23. The connecting bearing 23 is mainly used to support the half-shaft 2, so that the half-shaft 2 can be more stable when rotating. The smaller diameter end of the tapered hole 22 on the surface of the two bearing brackets 21 faces the direction of the two half-shaft sleeves 13. When the lubricating oil inside the drive axle flows inside the axle housing 1, the main drive housing 11, the half-shaft housing 12 and the half-shaft sleeve 13, larger impurities are difficult to enter the axle housing 1 through the smaller opening of the tapered hole 22. Moreover, the impurities inside the axle housing 1 can be easily discharged into the half-shaft sleeve 13 with the lubricating oil through the larger opening of the tapered hole 22. This ensures the lubrication effect and reduces the impurity content inside the axle housing 1, thereby improving the service life of the axle housing 1 and its internal components.

[0034] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the transmission mechanism 4 includes a connecting sleeve 401, which is connected to the second connecting seat 303. A damper 405 is fixedly connected inside the connecting sleeve 401, and a drive shaft 403 is fixedly connected to one end of the damper 405. A spring 406 is fixedly connected between the end face of the drive shaft 403 and the inner wall of the connecting sleeve 401. When the trailer bumps along a rough road, the half-shaft rod 2 continuously transmits power to the connecting sleeve 401 through the connecting mechanism 3. Under the action of the connecting mechanism 3, the connecting sleeve 401 and the half-shaft rod 2 will bend due to the bumps. At this time, the connecting sleeve 401... The distance between the drive shaft 403 and the external wheel mechanism remains unchanged, while the drive shaft 403 slides left and right inside the connecting sleeve 401 to adapt to the length. At this time, the damper 405 and the spring 406 work together to buffer and absorb energy from the drive shaft 403. This design makes the axle housing 1 of the drive axle integrated with the trailer, and the drive shaft 403 integrated with the wheel mechanism. When bumpy, the two maintain the transmission state while also being flexibly connected. Therefore, when the trailer is subjected to vibration, the vibration between the drive shaft 403 and the axle housing 1 will not interact with each other, thereby reducing damage to the drive axle and improving its service life.

[0035] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the inner wall of the connecting sleeve 401 is provided with multiple inner sliding grooves 402 at equal intervals, and the outer surface of the drive shaft 403 is fixedly connected with multiple inner sliders 404 at equal intervals. The inner sliders 404 and the inner sliding grooves 402 cooperate with each other. When the drive shaft 403 slides inside the connecting sleeve 401, the inner sliders 404 on the surface of the drive shaft 403 slide in the inner sliding grooves 402 on the inner wall of the connecting sleeve 401 at the same time. This plays a role in limiting the maximum sliding distance of the drive shaft 403 and preventing it from disengaging.

[0036] like Figure 2 and Figure 3 As shown, a sealing ring 5 is fixedly connected between the inner surface walls of the half-shaft sleeve 13 near the outer end. A spherical groove 51 is formed between the inner surface walls of the sealing ring 5. A spherical sleeve 52 is movably disposed inside the spherical groove 51. The outer surface of the drive shaft 403 slides through the outer surface of the spherical sleeve 52 and extends to the outside of the half-shaft sleeve 13. The sealing ring 5 and the spherical sleeve 52 are mainly used to seal the half-shaft sleeve 13. The spherical sleeve 52 is mainly used to limit and support the drive shaft 403. When the drive shaft 403 and the half-shaft rod 2 bend, the spherical sleeve 52 will move inside the spherical groove 51 inside the sealing ring 5, which not only ensures the sealing effect but also has a certain degree of adaptability and will not cause the drive shaft 403 to bend.

[0037] like Figure 1 , Figure 2 , Figure 8and Figure 9 As shown, a first drain pipe 6 is fixedly connected to the rear surface of one half-shaft sleeve 13, and a second drain pipe 63 is fixedly connected to the rear surface of the other half-shaft sleeve 13. A circulation pump 62 is provided at one end of the second drain pipe 63, and the input end of the circulation pump 62 is fixedly connected to one end of the second drain pipe 63. A connecting pipe 61 is fixedly connected to the output end of the circulation pump 62. A filter mechanism 7 is provided between the end faces of the connecting pipe 61 and the first drain pipe 6. By starting the circulation pump 62, the lubricating oil inside the axle housing 1 flows to the left or right. When the lubricating oil inside the axle housing 1 moves to the left, it passes through the first drain pipe 6, the filter mechanism 7, and the second drain pipe 63 in sequence and returns to the inside of the axle housing 1. During the flow, it is affected by the tapered hole 22 on the surface of the bearing bracket 21, so that most of the impurities inside the axle housing 1 are discharged to other parts of the drive axle, ensuring the cleanliness and lubrication effect of the lubricating oil inside the axle housing 1.

[0038] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, the filter mechanism 7 includes a T-shaped shell 701. The T-shaped shell 701 is hollow inside and has three open ends. A circular base 702 is inserted inside the T-shaped shell 701. A semi-circular filter 703 is fixedly connected to the top of the circular base 702. Multiple filter holes are arranged on the outer surface of the semi-circular filter 703. When the lubricating oil passes through the T-shaped shell 701 in the filter mechanism 7, the semi-circular filter 703 on the circular base 702 will block impurities. Depending on the orientation of the semi-circular filter 703, impurities can be blocked inside the first drain pipe 6 or the connecting pipe 61, ensuring the lubrication effect of the lubricating oil on the drive axle.

[0039] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, a circular plug 704 is threadedly connected inside the T-shaped housing 701 above the semi-circular filter 703. The bottom of the circular plug 704 abuts against the top of the semi-circular filter 703. A transparent circular bottom 706 is fixedly connected between the inner surface walls of the circular plug 704 and near the bottom. After the circular plug 704 is rotated and installed inside the T-shaped housing 701, it will abut against the top of the semi-circular filter 703, thereby fixing it. Furthermore, the content of impurities blocked in the lubricating oil can be observed through the transparent circular bottom 706 inside the circular plug 704, which makes it easy to determine whether the lubricating oil needs to be replaced. This effectively avoids the problem of wasting lubricating oil due to premature replacement and the problem of reducing the service life of the drive axle due to delayed replacement.

[0040] like Figure 1 , Figure 2 , Figure 8 and Figure 9As shown, a pull rod 705 is fixedly connected between the inner surface of the circular block 704 and near the top. A threaded cap 707 is threadedly connected to the outer surface of the T-shaped shell 701 near the top. The threaded cap 707 is mainly used to seal the T-shaped shell 701. After opening the threaded cap 707, the circular block 704 can be easily rotated and removed by the pull rod 705. Then, press the semi-circular filter 703 to one side with your finger and slide it upward. Since the semi-circular filter 703 blocks impurities in the lubricating oil for a long time, a lot of impurities will remain on the circular bottom 702 at the bottom of the semi-circular filter 703. Removing and cleaning it can effectively improve the service life of the lubricating oil, reduce cost consumption, and improve economic efficiency.

[0041] like Figure 1 and Figure 2 As shown, the front surface of the axle housing 1 is fitted with a main drive housing 11. The opposite end faces of the two half-shafts 2 pass through the interior of the half-shaft housing 12 and extend into the interior of the main drive housing 11. The axle housing 1 contains a differential, which is one of the core components of the drive axle. It mainly allows the left and right wheels to rotate at different speeds to accommodate the different travel of the inner and outer wheels when the vehicle is turning. The half-shafts 2 are mainly used to transmit power from the differential to the outside. The main drive housing 11 contains a main reducer, which is used to reduce the speed of the input rotational force and increase the torque to meet the needs of the wheels. At the same time, the main drive housing 11 is connected to the externally powered motor shaft through a shaft to provide power to the drive axle. This is a mature existing technology and will not be described in detail here.

[0042] The usage and working principle of this device are as follows: When the trailer is traveling on a bumpy road, the half-shaft rod 2 continuously transmits power to the connecting sleeve 401 through the connecting mechanism 3. Since the first connecting seat 301 and the second connecting seat 303 in the connecting mechanism 3 are connected by the first connecting shaft 302, the second connecting shaft 304, and the connecting piece 305, the first connecting seat 301 can drive the second connecting seat 303 to rotate, causing both to bend. Therefore, the connecting sleeve 401 and the half-shaft rod 2 will bend along with the bumps during transmission. At this time, the distance between the connecting sleeve 401 and the external wheel mechanism remains unchanged, while the transmission shaft 403 will shift left and right inside the connecting sleeve 401 to accommodate the length. During sliding, the damper 405 and spring 406 work together to buffer and absorb energy from the drive shaft 403. This design integrates the drive axle housing 1 with the trailer, while the drive shaft 403 is integrated with the wheel mechanism. During bumps, both maintain transmission while remaining flexibly connected. Therefore, when the trailer is subjected to vibration, the vibrations between the drive shaft 403 and the axle housing 1 do not interact, thus reducing damage to the drive axle and increasing its service life. When the trailer is parked after long-term use, the circulation pump 62 is activated to allow the lubricating oil inside the axle housing 1 to flow to the left or right. When the lubricating oil moves to the left, it passes sequentially through the first drain pipe 6, the filter mechanism 7, and... After the second drain pipe 63 returns to the interior of the axle housing 1, during the flow process, the smaller diameter end of the tapered hole 22 on the surface of the two bearing brackets 21 inside the drive axle faces the two half-shaft sleeves 13. This makes it difficult for larger impurities to enter the interior of the axle housing 1 through the smaller opening of the tapered hole 22 when the lubricating oil inside the drive axle flows through the axle housing 1, main drive housing 11, half-shaft housing 12, and half-shaft sleeves 13. Conversely, impurities inside the axle housing 1 are easily discharged with the lubricating oil through the larger opening of the tapered hole 22 into the interior of the half-shaft sleeves 13. As a result, during the circulation of the lubricating oil, most of the impurities inside the axle housing 1 are discharged to other parts of the drive axle, ensuring the cleanliness and lubrication effect of the lubricating oil inside the axle housing 1. This improves the service life of the bridge housing 1 and its internal components. Furthermore, when the lubricating oil passes through the T-shaped housing 701 in the filter mechanism 7, the semi-circular filter 703 on the circular bottom 702 blocks impurities. Depending on the orientation of the semi-circular filter 703, impurities can be blocked inside the first drain pipe 6 or the connecting pipe 61, ensuring the lubrication effect of the lubricating oil on the drive axle. After rotating and removing the threaded cover 707, the content of impurities blocked in the lubricating oil can be observed through the transparent circular bottom 706 inside the circular plug 704, making it easy to determine whether the lubricating oil needs to be replaced. This effectively avoids the problem of waste caused by replacing the lubricating oil too early and the problem of reduced service life of the drive axle caused by replacing it too late.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A center-axle new energy trailer drive axle, comprising an axle housing (1), characterized in that: Both sides of the bridge housing (1) are equipped with half shaft housings (12), one end of the half shaft housing (12) is equipped with a half shaft sleeve (13), the inside of the half shaft housing (12) is provided with a half shaft rod (2), one end of the half shaft rod (2) is provided with a connecting mechanism (3), and one side of the connecting mechanism (3) is provided with a transmission mechanism (4). The connecting mechanism (3) includes a first connecting seat (301) and a second connecting seat (303). A first connecting shaft (302) is fixedly connected between the inner walls of the first connecting seat (301), and a second connecting shaft (304) is fixedly connected between the inner walls of the second connecting seat (303). A connecting piece (305) is sleeved between the outer surfaces of the first connecting shaft (302) and the second connecting shaft (304). One end of the first connecting seat (301) is connected to one end of the half shaft (2). A connecting bearing (23) is fixedly connected to the outer surface of the half shaft (2), and a bearing bracket (21) is fixedly connected to the outer surface of the connecting bearing (23). The outer surface of the bearing bracket (21) is connected to the inner wall of the half shaft housing (12), and multiple tapered holes (22) are equidistantly opened on the outer surface of the bearing bracket (21). The transmission mechanism (4) includes a connecting sleeve (401), which is connected to a second connecting seat (303). A damper (405) is fixedly connected inside the connecting sleeve (401), and a transmission shaft (403) is fixedly connected to one end of the damper (405). A spring (406) is fixedly connected between the end face of the transmission shaft (403) and the inner wall of the connecting sleeve (401). The inner wall of the connecting sleeve (401) is provided with multiple inner sliding grooves (402) at equal intervals, and the outer surface of the transmission shaft (403) is fixedly connected with multiple inner sliding blocks (404) at equal intervals. The inner sliding blocks (404) and the inner sliding grooves (402) cooperate with each other. A sealing ring (5) is fixedly connected between the inner surface walls of the half-shaft sleeve (13) near the outer end. A spherical groove (51) is provided between the inner surface walls of the sealing ring (5). A spherical sleeve (52) is movably arranged inside the spherical groove (51). The outer surface of the drive shaft (403) slides through the outer surface of the spherical sleeve (52) and extends to the outside of the half-shaft sleeve (13).

2. The drive axle for a centrally mounted new energy trailer according to claim 1, characterized in that: One of the half-shaft sleeves (13) has a first drainage pipe (6) fixedly connected to its rear surface, and the other half-shaft sleeve (13) has a second drainage pipe (63) fixedly connected to its rear surface. A circulation pump (62) is provided at one end of the second drainage pipe (63), and the input end of the circulation pump (62) is fixedly connected to one end of the second drainage pipe (63). A connecting pipe (61) is fixedly connected to the output end of the circulation pump (62), and a filter mechanism (7) is provided between the end faces of the connecting pipe (61) and the first drainage pipe (6).

3. The drive axle for a centrally mounted new energy trailer according to claim 2, characterized in that: The filtration mechanism (7) includes a T-shaped shell (701), the interior of which is hollow and all three ends are open. A circular bottom (702) is inserted inside the T-shaped shell (701), and a semi-circular filter (703) is fixedly connected to the top of the circular bottom (702). Multiple filter holes are arranged on the outer surface of the semi-circular filter (703).

4. The drive axle for a centrally mounted new energy trailer according to claim 3, characterized in that: Inside the T-shaped shell (701), above the semi-circular filter (703), a circular plug (704) is threadedly connected. The bottom of the circular plug (704) abuts against the top of the semi-circular filter (703). A transparent circular bottom (706) is fixedly connected between the inner surface wall of the circular plug (704) and near the bottom.

5. The drive axle for a centrally mounted new energy trailer according to claim 4, characterized in that: A pull rod (705) is fixedly connected between the inner walls of the circular block (704) near the top, and a threaded cap (707) is threadedly connected to the outer surface of the T-shaped shell (701) near the top.

6. The drive axle for a centrally mounted new energy trailer according to claim 5, characterized in that: The front surface of the bridge housing (1) is provided with a main drive housing (11), and the opposite side end faces of the two half shafts (2) pass through the interior of the half shaft housing (12) and extend into the interior of the main drive housing (11).

Images