Light truck new energy electric drive axle

Abstract

The utility model relates to the technical field of electric drive axles, in particular to a light truck new energy electric drive axle which comprises an axle housing, a speed reducer driven by a motor is fixed in the middle of the axle housing through bolts, the speed reducer is in gear transmission with a differential mechanism in the axle housing, and the differential mechanism is in transmission connection with hubs at the two ends of the axle housing through half shafts. A brake drum is fixed to the hub, a brake system fixed to the axle housing is sleeved with the brake drum, steel plate spring seats are arranged at the positions, with the same distance from the hub, of the two ends of the axle housing, and damping supports are arranged on the steel plate spring seats. According to the utility model, the conventional axle assembly is fully utilized, the cost for transforming an oil vehicle into an electric vehicle is reduced, the casting difficulty of the axle housing is reduced by adopting the combined axle housing, and the damping bracket is integrated to the steel plate spring seat, so that the welding damage to the axle housing is reduced, and the position of the damping bracket is convenient to adjust when a vehicle body is assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drive bridges, in particular to a new energy electric drive bridge for light trucks. Background Art

[0002] New energy vehicles are now receiving more and more attention. The traditional fuel vehicles are transformed into electric vehicles, in which the power drive mechanism is the most important core. For example, Patent 2015209259971 A light truck electric drive rear axle discloses an electric drive axle, but its shock absorber bracket is welded to the bridge housing, which is not conducive to subsequent position adjustment. Utility Model Content

[0003] The utility model aims to provide a new energy electric drive bridge for a light truck in view of the deficiencies of the prior art, which fixes the shock absorbing bracket to the leaf spring seat, thereby facilitating subsequent position adjustment and reducing damage to the bridge housing caused by welding.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a light truck new energy electric drive bridge, including a bridge housing, a reducer driven by a motor is fixed in the middle of the bridge housing by bolts, the reducer is driven by a differential gear in the bridge housing, the differential is connected to the wheel hubs at both ends of the bridge housing through a half shaft, a brake drum is fixed to the wheel hub, a brake system fixed to the bridge housing is sleeved in the brake drum, leaf spring seats are arranged at the same distance from the wheel hub at both ends of the bridge housing, and shock absorbing brackets are arranged on the leaf spring seats.

[0005] Preferably, the bridge housing is welded from three parts, including a threaded body in the middle on which the differential is mounted, and extension bridges at both ends, one end of the extension bridge being a square tube welded to the threaded body, and the other end of the extension bridge being a round tube rotatably connected to the wheel hub.

[0006] Preferably, the gears of the reducer are full-helical gears that are ground.

[0007] Preferably, the leaf spring seat comprises two upper and lower rectangular plates, and round tubes welded to the two rectangular plates at four corners, respectively, and a rib plate is provided between the rectangular plates and the round tube.

[0008] Preferably, the shock absorbing bracket is connected to the rectangular plate by bolts, and after the leaf spring seat is welded to the bridge housing, the shock absorbing bracket is parallel to the bridge housing.

[0009] Preferably, the shock-absorbing bracket is a rectangular parallelepiped, and a through hole perpendicular to the bridge housing is provided at the front end of the shock-absorbing bracket.

[0010] The beneficial effects of the utility model are: a new energy electric drive bridge for light trucks, which includes a bridge housing, a reducer driven by a motor is fixed in the middle of the bridge housing by bolts, the reducer is driven by a differential gear in the bridge housing, the differential is connected to the wheel hubs at both ends of the bridge housing through a half shaft, the wheel hub is fixed with a brake drum, the brake drum is fitted with a brake system fixed to the bridge housing, and leaf spring seats are arranged at the same distance from the wheel hub at both ends of the bridge housing, and the leaf spring seats are provided with shock absorber brackets. The utility model makes full use of the existing axle assembly, reduces the cost of transforming from oil vehicles to electric vehicles, and adopts a combined bridge housing to reduce the difficulty of bridge housing casting, integrates the shock absorber bracket into the leaf spring seat, thereby reducing welding damage to the bridge housing, and facilitates adjustment of the position of the shock absorber bracket during vehicle body assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of a new energy electric drive bridge for a light truck of the present utility model.

[0012] Description of reference numerals:

[0013] 1——bridge housing, 11——tooth package body, 12——extension bridge, 2——motor, 3——reducer, 4——wheel hub, 5——brake drum, 6——brake system, 7——leaf spring seat, 71——rectangular plate, 72——round tube, 73——rib plate, 8——shock-absorbing bracket. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0015] like Figure 1 As shown, a new energy electric drive bridge for a light truck in this embodiment includes a bridge housing 1, a reducer 3 driven by a motor 2 is fixed in the middle of the bridge housing 1 by bolts, the reducer 3 is driven by a differential gear in the bridge housing 1, and the differential is connected to the wheel hubs 4 at both ends of the bridge housing 1 through half shafts, a brake drum 5 is fixed to the wheel hub 4, a brake system 6 fixed to the bridge housing 1 is fitted in the brake drum 5, leaf spring seats 7 are arranged at the same distance from the wheel hub 6 at both ends of the bridge housing 1, and shock absorbing brackets 8 are arranged on the leaf spring seats 7.

[0016] The electric drive axle of this embodiment has modified the power mechanism while minimizing the modification of the existing axle structure. The motor uses flat copper wire, which has high energy density and high power. The gears of the reducer 3 are all ground helical gears, which have better matching accuracy, smooth operation and low noise. The reducer 3 is coaxially provided with a cable parking mechanism. The overall power mechanism has a compact structure and occupies a small space.

[0017] The shock absorber bracket 8 for mounting the shock absorber in this embodiment is fixed to the leaf spring seat 7 by means of U-bolts when the leaf spring is mounted, so that the mounting position can be adjusted or the size can be changed without welding to the bridge housing 1.

[0018] The bridge housing 1 is made of high-strength steel, with a reduced thickness to reduce weight. The bridge housing 1 is welded from three parts, including a threaded body 11 in the middle where the differential is installed, and extension bridges 12 at both ends. One end of the extension bridge 12 is a square tube that is welded to the threaded body 11, and the other end of the extension bridge 12 is a round tube that is rotatably connected to the wheel hub 4. In this way, only the threaded body 11 needs to be cast, thereby reducing the size and weight of the casting and reducing the difficulty of casting.

[0019] The leaf spring seat 7 includes two upper and lower rectangular plates 71, and round tubes welded to the two rectangular plates 71 at four corners, and ribs 73 are provided between the rectangular plates 71 and the round tubes 72. The leaf spring seat 7 can be welded as a whole first, and then fitted on the extension bridge 12 and welded thereto; it can also be welded on the bridge housing 1.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, and for the convenience of describing the technical solution, the front, rear, left, right, top, middle, and bottom directions adopted are based on the settings in the accompanying drawings, rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A new energy electric drive axle for a light truck, characterized by: It includes a bridge housing, in the middle of which a reducer driven by a motor is fixed by bolts, the reducer is driven by a differential gear in the bridge housing, the differential is connected to the wheel hubs at both ends of the bridge housing through half shafts, a brake drum is fixed to the wheel hub, a brake system fixed to the bridge housing is fitted inside the brake drum, leaf spring seats are arranged at the same distance from the wheel hub at both ends of the bridge housing, and shock absorbing brackets are arranged on the leaf spring seats.

2. A new energy electric drive axle for light trucks according to claim 1, characterized in that: The bridge housing is welded from three parts, including a threaded body in the middle on which the differential is mounted, and extension bridges at both ends. One end of the extension bridge is a square tube welded to the threaded body, and the other end of the extension bridge is a round tube rotatably connected to the wheel hub.

3. The new energy electric drive axle for light trucks according to claim 1 is characterized by: The gears of the reducer are full-helical gears that are ground.

4. The new energy electric drive axle for light trucks according to claim 1 is characterized by: The leaf spring seat comprises two upper and lower rectangular plates, and round tubes respectively welded to the two rectangular plates at four corners, and a rib plate is arranged between the rectangular plates and the round tube.

5. The new energy electric drive axle for light trucks according to claim 4 is characterized by: The shock absorbing bracket is connected with the rectangular plate bolts, and after the leaf spring seat is welded to the bridge housing, the shock absorbing bracket is parallel to the bridge housing.

6. The new energy electric drive axle for light trucks according to claim 1 is characterized by: The shock absorbing bracket is a rectangular parallelepiped, and a through hole perpendicular to the bridge housing is arranged at the front end of the shock absorbing bracket.

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