A drive motor arrangement

Abstract

The application relates to the technical field of vehicle structures, and discloses a driving motor arrangement structure, which comprises a vehicle frame, the bottom of the vehicle frame is connected with a leaf spring, a drive axle and a driving motor are arranged on the leaf spring, the driving motor is arranged at the rear side of the drive axle, the output shaft of the driving motor is in transmission connection with the drive axle through a gear assembly, a support beam is further arranged on the leaf spring, and the end of the driving motor, which is far away from the drive axle, is supported and arranged on the support beam. The driving motor is arranged at the rear side of the drive axle, the drive axle is reversely arranged in front of and behind the driving motor, the driving motor is assembled with the drive axle, one end of the driving motor is directly in transmission connection with the drive axle through a gear assembly, and the other end of the driving motor is supported and arranged on the support beam, the driving motor is fixed through the support beam and the drive axle, the fixing form of the driving motor is simplified, the driving motor and the drive axle are directly in transmission connection through the gear assembly, transition shafts are not needed for transition connection, the arrangement structure and the transmission structure of the driving motor are simplified, and the occupied arrangement space is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle structure, in particular to a driving motor arrangement structure. BACKGROUND

[0002] New energy is more and more widely used in the field of truck, especially in the field of light truck and medium truck. New energy truck adopts driving motor to replace engine as power input source. Compared with engine, the power input of driving motor can save clutch, transmission and other parts, and simplify the structure of transmission system.

[0003] The existing arrangement form of driving motor is shown in the figure Figure 1 In order to arrange conveniently, the existing new energy truck usually arranges driving motor 4 on the frame 1 near the drive axle 3. The fixing mode of driving motor 4 and frame 1 is generally similar to that of engine, that is, four-point suspension installation is adopted. Two motor suspensions 6 are arranged on the left and right sides of driving motor 4 respectively. Driving motor 4 is connected with drive axle 3 through transmission shaft 11. Leaf spring 2 is arranged on drive axle 3. The tail end of leaf spring 2 is fixedly connected with lower beam 5 extending along the width direction of vehicle. Air bag 12 of air suspension is arranged on lower beam 5.

[0004] The above-mentioned arrangement form of driving motor arranges motor on the frame near drive axle. Since there is relative movement between drive axle and frame, transmission shaft must be connected to drive axle. Therefore, the structure is complex and occupies the space of vehicle. SUMMARY

[0005] The purpose of the present application is to provide a driving motor arrangement structure to solve the problem of complex structure and occupation of vehicle space in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present application provides a driving motor arrangement structure, which comprises a frame. The bottom of the frame is connected with leaf spring extending along the front-rear direction of vehicle. The leaf spring is provided with drive axle. The rear side of drive axle is arranged with driving motor. The output shaft of driving motor is transmissionally connected with drive axle through gear assembly. The leaf spring is further arranged with support beam. The end of driving motor away from drive axle is arranged on support beam.

[0007] Preferably, two groups of motor suspensions are arranged on the support beam. The two groups of motor suspensions are symmetrically arranged. The driving motor is supported and fixed between the two groups of motor suspensions.

[0008] Preferably, the motor suspension comprises suspension body and elastic pad. The suspension body is fixed on the support beam. The elastic pad is arranged between the suspension body and the support beam.

[0009] Preferably, the rear end of the leaf spring is fixedly connected with a lower beam of the air suspension, and an air bag of the air suspension is arranged on the lower beam, and the lower beam forms the support beam.

[0010] Preferably, the lower beam is fixedly supported on the side of the leaf spring away from the drive axle.

[0011] Preferably, the gear assembly comprises an output gear fixed on the drive motor and a passive gear arranged on the drive axle, the output gear is a bevel gear, and the output gear is in meshing connection with the passive gear.

[0012] Preferably, the bottom of the frame is fixedly connected with a guide arm, and the front end of the leaf spring is connected with the guide arm.

[0013] Preferably, a lower pad is further arranged on the leaf spring, and the drive axle is arranged on the lower pad.

[0014] Compared with the prior art, the embodiment of the present application has the beneficial effects that the drive motor is arranged on the rear side of the drive axle, the drive axle is assembled with the drive motor after being reversed, one end of the drive motor is directly connected with the drive axle through the gear assembly, the other end of the drive motor is supported and arranged on the support beam, the drive motor is fixed through the support beam and the drive axle, the fixing form of the drive motor is simplified, the drive motor and the drive axle are directly connected through the gear assembly, and the transition shaft is not needed, so that the arrangement structure and the transmission structure of the drive motor are simplified, and the occupied arrangement space is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the arrangement form of the prior drive motor;

[0016] Figure 2 is a schematic diagram of the arrangement structure of the drive motor of the present application;

[0017] Figure 3 is Figure 2 is a schematic diagram of the arrangement structure of the drive motor of the present application;

[0018] Figure 4 is Figure 2 is a schematic diagram of the transmission connection between the drive motor and the drive axle of the arrangement structure of the drive motor of the present application.

[0019] In the drawings, 1 is a frame, 2 is a leaf spring, 3 is a drive axle, 4 is a drive motor, 5 is a lower beam, 6 is a motor suspension, 61 is a suspension body, 62 is an elastic pad, 7 is an output gear, 8 is a passive gear, 9 is a guide arm, 10 is a lower pad, 11 is a transmission shaft, and 12 is an air bag. DETAILED DESCRIPTION

[0020] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0021] A preferred embodiment of the driving motor arrangement structure of the present application is shown in the figure, which comprises a vehicle frame 1, a leaf spring 2, a drive axle 3, a driving motor 4 and a support beam. The vehicle frame 1 is the main structure of the vehicle, and its specific structure is the same as the prior art, which is not described in detail here. Figures 2 to 4 The leaf spring 2 is arranged at the bottom of the vehicle frame 1, and extends in the front-rear direction of the vehicle, i.e. the front-rear direction when the vehicle is running. There are two sets of leaf springs 2, which are arranged in the left-right direction of the vehicle and are parallel to each other. The leaf spring 2 can adopt the existing structure of the leaf spring 2, which is not described in detail here.

[0022] The drive axle 3 is arranged on the leaf spring 2, and the left and right ends of the drive axle 3 are used to connect the wheels on the left and right sides of the vehicle. The driving motor 4 is arranged at the rear side of the drive axle 3. Since the front-rear direction of the driving motor 4 and the drive axle 3 is opposite to the prior art, the drive axle 3 is a front-rear reversed structure, i.e. the front-rear ends of the drive axle 3 are arranged in reverse relative to the front-rear ends of the prior art, to ensure the transmission connection between the driving motor 4 and the drive axle 3.

[0023] Specifically, the output shaft of the driving motor 4 is transmissionally connected with the drive axle 3 through a gear assembly, and the driving motor 4 and the drive axle 3 are omitted from the transmission shaft 11, without the need for the transmission shaft 11 to transitionally connect, thus simplifying the arrangement structure and transmission structure of the driving motor 4, thereby reducing the arrangement space occupied by the driving motor 4.

[0024] The leaf spring 2 is also arranged with a support beam, which is fixedly connected between the two sets of leaf springs 2, and the support beam is located at the rear end of the leaf spring 2. The end of the driving motor 4 away from the drive axle 3 is supported on the support beam, so that the front end of the driving motor 4 is fixedly connected with the drive axle 3, and the rear end is supported and fixed with the support beam. The driving motor 4 is fixed by the support beam and the drive axle 3, thus simplifying the fixing form of the driving motor 4.

[0025] Preferably, the support beam is provided with two sets of motor suspensions 6, which are symmetrically arranged, and the driving motor 4 is supported and fixed between the two sets of motor suspensions 6.

[0026] Preferably, the support beam is provided with two sets of motor suspensions 6, which are symmetrically arranged, and the driving motor 4 is supported and fixed between the two sets of motor suspensions 6.

[0027] Two groups of motor suspensions 6 are arranged on the support beam, the driving motor 4 is supported by the two groups of motor suspensions 6, the upper part of the motor suspension 6 is connected with the driving motor 4, the lower part is connected with the support beam, and the vibration of the driving motor 4 is reduced. Since one end of the driving motor 4 is directly connected with the drive axle 3 through the gear assembly, integrated arrangement is adopted, therefore, the end of the driving motor 4 close to the drive axle 3 can omit the arrangement of the suspension, only two motor suspensions 6 are arranged on the support beam as fixing points, and the fixing structure of the fixing motor is simplified.

[0028] Preferably, the motor suspension 6 comprises a suspension body 61 and an elastic pad 62, the suspension body 61 is fixed on the support beam, and the elastic pad 62 is arranged between the suspension body 61 and the support beam.

[0029] The elastic pad 62 is arranged between the suspension body 61 and the support beam, the suspension body 61 is elastically supported by the elastic pad 62, and the vibration of the driving motor 4 is reduced and controlled. In the embodiment, the elastic pad 62 is a rubber cushion.

[0030] Preferably, the rear end of the leaf spring 2 is fixedly connected with the lower beam 5 of the air suspension, the air bag 12 of the air suspension is arranged on the lower beam 5, and the lower beam 5 forms the support beam.

[0031] The lower beam 5 of the air suspension is used as the support beam, the drive axle 3, the driving motor 4 and the lower beam 5 are integrated into a whole structure, the arrangement structure of the driving motor 4 is more simple, the structure is simplified, and the arrangement cost of the driving motor 4 is reduced.

[0032] Preferably, the lower beam 5 is fixedly supported on the side of the leaf spring 2 away from the drive axle 3.

[0033] In the embodiment, the lower beam 5 is arranged on the side of the leaf spring 2 away from the vehicle frame 1, compared with the structure that the lower beam 5 in the prior art is arranged above the leaf spring 2, the distance between the top surface of the lower beam 5 and the vehicle frame 1 is increased, and the arrangement space of the driving motor 4 is increased.

[0034] Preferably, the gear assembly comprises an output gear 7 fixed on the driving motor 4 and a passive gear 8 arranged on the drive axle 3, the output gear 7 is a bevel gear, and the output gear 7 is in meshing connection with the passive gear 8.

[0035] The driving motor 4 is directly connected with the drive axle 3 through the output gear 7 and the passive gear 8, the passive gear 8 is driven by the output gear 7 to drive the drive axle 3, the internal parts of the drive axle 3 can be directly borrowed as the existing structure, the whole structure of the drive axle 3, the vehicle frame 1, the leaf spring 2, the suspension and the like can be universal as the existing structure, and the development cost is reduced.

[0036] Preferably, the bottom of the vehicle frame 1 is fixedly connected with a guide arm 9, and the front end of the leaf spring 2 is connected with the guide arm 9.

[0037] The front end of the plate spring 2 is connected with the frame 1 through a guide arm 9, which can adopt the existing structure, and the suspension and other accessories of the vehicle do not need to be changed, and the universalization between the existing structure is realized, thereby reducing the development cost.

[0038] Preferably, a lower cushion 10 is further arranged on the plate spring 2, and the drive axle 3 is arranged on the lower cushion 10.

[0039] The lower cushion 10 is arranged between the drive axle 3 and the plate spring 2, and the drive axle 3 is damped, so that the vibration of the drive axle 3 can be reduced and controlled, and the comfort of the vehicle is improved.

[0040] In summary, the embodiment of the present application provides a kind of drive motor arrangement structure, it is arranged in the rear side of drive axle to drive motor, drive axle is reversed after being arranged in drive motor assembly, one end of drive motor is directly connected with drive axle between gear assembly, and the other end is supported and arranged on support beam, drive motor is fixed by support beam and drive axle, it simplifies the fixed form of drive motor, simultaneously, drive motor and drive axle are directly connected through gear assembly, without transition shaft transition connection, it simplifies the arrangement structure and transmission structure of drive motor, to reduce the occupied arrangement space.

[0041] The above only is the preferred embodiment of the present application, it should be pointed out, for ordinary skilled person in the art, on the premise of not departing from the technical principles of the present application, can also make several improvements and replacements, these improvements and replacements also should be regarded as the protection scope of the present application.

Claims

1. A drive motor arrangement structure, characterized in that, The vehicle includes a frame, the bottom of which is connected to a leaf spring extending in the longitudinal direction of the vehicle. A drive axle is mounted on the leaf spring, and a drive motor is arranged on the rear side of the drive axle. The drive axle is reversed front to rear and assembled with the drive motor. The output shaft of the drive motor is connected to the drive axle via a gear assembly. A support beam is also arranged on the leaf spring. The end of the drive motor away from the drive axle is supported on the support beam. The rear end of the leaf spring is fixedly connected to a lower support beam of an air suspension. An airbag of the air suspension is arranged on the lower support beam. The lower support beam forms the support beam and is fixedly supported on the side of the leaf spring away from the drive axle.

2. The drive motor arrangement structure according to claim 1, characterized in that, Two sets of motor mounts are provided on the support beam. The two sets of motor mounts are arranged symmetrically, and the drive motor is supported and fixed between the two sets of motor mounts.

3. The drive motor arrangement structure according to claim 2, characterized in that, The motor mount includes a mount body and an elastic pad. The mount body is fixed on the support beam, and the elastic pad is arranged between the mount body and the support beam.

4. The drive motor arrangement structure according to any one of claims 1-3, characterized in that, The gear assembly includes an output gear fixed on the drive motor and a driven gear arranged on the drive axle. The output gear is a bevel gear, and the output gear meshes with the driven gear.

5. The drive motor arrangement structure according to any one of claims 1-3, characterized in that, A guide arm is fixedly connected to the bottom of the frame, and the front end of the leaf spring is connected to the guide arm.

6. The drive motor arrangement structure according to any one of claims 1-3, characterized in that, A lower pad is also arranged on the leaf spring, and the drive axle is arranged on the lower pad.

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