CN112937684A

CN112937684A - Electric automobile chassis system

Info

Publication number: CN112937684A
Application number: CN202110412768.XA
Authority: CN
Inventors: 段贤斌; 段军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-06-11

Abstract

The invention discloses an electric automobile chassis system which comprises a frame, a frame widening device, a walking steering device, a turnable trunk and a turnable trunk driving mechanism, wherein the frame widening device comprises two widening plates which are respectively and slidably arranged on two sides of the frame, a linear moving mechanism for driving the two widening plates to stretch and retract and a first driving mechanism connected with the linear moving mechanism, the walking steering device comprises a plurality of walking wheels arranged on the widening plates, a steering transmission mechanism for driving the walking wheels to steer synchronously and a second driving mechanism connected with the steering transmission mechanism, and the steering transmission mechanism comprises a first transmission assembly, a linkage rod and a second transmission assembly. The invention has simple structure, can realize the purpose of widening the frame, can improve the synchronous steering precision of the travelling wheels, can ensure the travelling stability of the electric automobile after the frame is widened, can realize the manual control on the turnable trunk, and can enhance the movement safety of the turnable trunk.

Description

Electric automobile chassis system

Technical Field

The invention belongs to the technical field of electric automobiles, and particularly relates to an electric automobile chassis system.

Background

At present, the types of electric vehicles include a pure electric vehicle (BEV), a Hybrid Electric Vehicle (HEV) and a Fuel Cell Electric Vehicle (FCEV), and an electric vehicle chassis system is composed of four parts, namely a transmission system, a driving system, a steering system and a braking system, and is used for supporting and installing electric drive and various parts thereof to form an integral model of the electric vehicle, and receiving power driven by the electric drive to enable the electric vehicle to move, so that the normal driving of the electric vehicle is ensured. However, the existing chassis system of the electric automobile has the following defects: firstly, the steering precision is poor, which is mainly expressed in that: the steering radius ratio is larger, so that the steering mechanism is not suitable for being used in narrow space; the steering is not flexible enough, and the walking direction can be changed only by the integral steering of the vehicle body; the device cannot move in any parallel way in other directions and cannot turn in situ, so the movement flexibility is relatively poor and the parking is inconvenient; the parking space is large, so that the parking density of a parking area is low, and difficulty is caused to parking in an urban area; secondly, the chassis cannot be widened, and the trunk cannot be turned over, so that the capacity of the carriage is limited; in order to solve the above drawbacks, therefore, an electric vehicle chassis system should be provided.

Disclosure of Invention

The invention aims to solve the technical problem that the defects in the prior art are overcome, and the chassis system of the electric automobile is simple in structure and reasonable in design, can achieve the purpose of widening a frame, can improve the synchronous steering precision of traveling wheels, can ensure the traveling stability of the electric automobile after the frame is widened, can achieve manual control over a turnover trunk, can enhance the movement safety of the turnover trunk, is convenient to operate, saves space, and is convenient to popularize and apply.

In order to solve the technical problems, the invention adopts the technical scheme that: an electric vehicle chassis system, characterized in that: comprises a frame, a frame widening device arranged on the frame, a walking steering device connected with the frame widening device and a turnable trunk driving mechanism used for driving the turnable trunk to turn over, wherein the frame widening device comprises two widening plates which are respectively arranged at two sides of the frame in a sliding way, a linear moving mechanism used for driving the two widening plates to stretch and contract and a first driving mechanism connected with the linear moving mechanism, the walking steering device comprises a plurality of walking wheels, a steering transmission mechanism used for driving a plurality of walking wheels to synchronously steer and a second driving mechanism connected with the steering transmission mechanism, the steering transmission mechanism comprises a first transmission component connected with the second driving mechanism, a linkage rod connected with the first transmission component and a second transmission component arranged between the linkage rod and the walking wheels, the utility model discloses a car trunk driving mechanism, including widening board, the trunk that can overturn, be provided with the confession on the widening board the mounting bracket of walking wheel installation, set up the confession on the frame the waist type hole that the mounting bracket passed, the length direction in waist type hole the length direction of link lever all with the flexible direction of widening board is unanimous, the trunk that can overturn rotates through the pivot and installs at the carriage afterbody, the trunk actuating mechanism that can overturn is in including laying in the actuating handle on driver seat right side and setting actuating handle with rack and pinion drive assembly between the pivot.

The electric automobile chassis system is characterized in that: the linear moving mechanism comprises a bidirectional screw rod, a first nut and a second nut, the first nut and the second nut are sleeved on the bidirectional screw rod, and the first nut and the second nut are fixedly installed on the two widening plates respectively.

The electric automobile chassis system is characterized in that: the first driving mechanism comprises a driving motor and a first chain transmission assembly arranged between the driving motor and the bidirectional screw rod, the first chain transmission assembly comprises a first driving chain wheel fixedly mounted on an output shaft of the driving motor and a first driven chain wheel fixedly mounted on the bidirectional screw rod, and the first driving chain wheel is connected with the first driven chain wheel through a first chain.

The electric automobile chassis system is characterized in that: the second driving mechanism comprises a driving shaft, a transmission shaft arranged on the frame and a second chain transmission assembly arranged between the driving shaft and the transmission shaft, the second chain transmission assembly comprises a second driving chain wheel fixedly arranged on the driving shaft and a second driven chain wheel fixedly arranged on the transmission shaft, and the second driving chain wheel and the second driven chain wheel are connected through a second chain.

The electric automobile chassis system is characterized in that: the first transmission assembly comprises a first gear fixedly mounted on the transmission shaft and a first rack meshed with the first gear, one end of the first rack is fixedly connected with the linkage rod, a first rack mounting seat is arranged on the frame, and the other end of the first rack penetrates through the first rack mounting seat.

The electric automobile chassis system is characterized in that: the second transmission assembly comprises two second racks which are arranged in parallel and respectively arranged on the two widening plates and a second gear meshed with the second racks, and the second gear is fixedly arranged on the mounting frame.

The electric automobile chassis system is characterized in that: one end of the second rack is fixedly provided with a sleeve, the sleeve is sleeved on the linkage rod in a sliding mode, the length direction of the second rack is parallel to the length direction of the first rack, and the length direction of the second rack and the length direction of the first rack are perpendicular to the length direction of the linkage rod.

The electric automobile chassis system is characterized in that: the widening plate is provided with a second rack mounting base, a second rack clamping groove in sliding fit with the second rack is formed in the second rack mounting base, and the forming direction of the second rack clamping groove is perpendicular to the stretching direction of the widening plate.

The electric automobile chassis system is characterized in that: the rack-and-pinion transmission assembly comprises a driving gear, a third rack meshed with the driving gear and a driven gear meshed with the third rack, the driving handle is fixedly installed on the end face of the driving gear, the third rack is slidably installed on the frame, and the driven gear is fixedly installed on the rotating shaft.

The electric automobile chassis system is characterized in that: and a third rack mounting frame is arranged on the frame, and a third rack is slidably mounted on the third rack mounting frame.

Compared with the prior art, the invention has the following advantages:

1. the frame widening device is arranged on the frame and comprises two widening plates, a linear moving mechanism for driving the two widening plates to stretch and retract and a first driving mechanism connected with the linear moving mechanism, the two widening plates are respectively arranged on two sides of the frame in a sliding mode, and the linear moving mechanism can drive the two widening plates to simultaneously extend or retract under the driving action of the first driving mechanism during actual use, so that the purpose of widening the frame is achieved.

2. According to the invention, the walking steering device connected with the frame widening device is arranged, the walking steering device comprises a plurality of walking wheels, a steering transmission mechanism for driving the walking wheels to steer synchronously and a second driving mechanism connected with the steering transmission mechanism, the steering transmission mechanism comprises a first transmission assembly, a linkage rod and a second transmission assembly, the first transmission assembly is connected with the second driving mechanism, the second transmission assembly is arranged between the linkage rod and the walking wheels, when the walking frame is actually used, under the driving action of the second driving mechanism, the first transmission assembly can transmit the driving force of the second driving mechanism to the linkage rod, and the second transmission assembly can transmit the movement on the linkage rod to the walking wheels, so that the purpose of driving the walking wheels to steer is realized.

3. According to the invention, the mounting frame is arranged on the widening plate, the walking wheels are fixedly mounted at the bottom end of the mounting frame, the waist-shaped hole for the mounting frame to penetrate through is formed in the frame, the length direction of the waist-shaped hole and the length direction of the linkage rod are consistent with the stretching direction of the widening plate, when the frame is in practical use, when the widening plate extends out, the mounting frame and the walking wheels need to move simultaneously along with the widening plate, at the moment, the waist-shaped hole can provide sufficient moving space for the movement of the mounting frame and the walking wheels, namely, after the frame is widened, the distance between the two walking wheels which are oppositely arranged is increased, and the walking stability of the electric automobile after the frame is widened can be ensured.

4. According to the invention, the turnover trunk driving mechanism for driving the turnover trunk to turn over is arranged on the frame, and the turnover trunk is rotatably arranged at the tail part of the carriage through the rotating shaft, so that the turnover trunk driving mechanism comprises the driving handle and the gear rack transmission assembly arranged between the driving handle and the rotating shaft.

5. The invention has simple structure, reasonable design, low manufacturing cost and convenient popularization and application.

In conclusion, the invention has the advantages of simple structure and reasonable design, can realize the purpose of widening the frame, can improve the synchronous steering precision of the walking wheels, can ensure the walking stability of the electric automobile after the frame is widened, can realize the manual control on the turnover trunk, can enhance the motion safety of the turnover trunk, is convenient to operate, saves space and is convenient to popularize and apply.

The invention is described in further detail below with reference to the figures and examples.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the reversible trunk of the present invention in an expanded configuration.

FIG. 3 is a schematic view of the convertible trunk of the present invention in a stowed position.

Fig. 4 is a bottom view of fig. 1.

Description of reference numerals:

1, a frame; 2-a widening plate; 3-a bidirectional screw rod;

4-a first nut; 5-a second nut; 6, driving a motor;

7-a travelling wheel; 8, mounting a frame; 9-a drive shaft;

10-a transmission shaft; 11 — a first gear; 12 — a first rack;

13-a linkage bar; 14-a first rack mount; 15-a second rack;

16 — a second gear; 17-a second rack mount; 18-a sleeve;

19-a compartment; 19-1-rear cover of carriage; 20-reversible trunk;

21-a rotating shaft; 22-a drive gear; 23-third rack;

24-a driven gear; 25 — a third rack mount; 26-a driving handle;

27 — a first chain; 28-a synchronization chain; 29 — a second chain;

30-steering wheel.

Detailed Description

As shown in fig. 1, 2 and 3, the invention comprises a vehicle frame 1, a vehicle frame widening device arranged on the vehicle frame 1, a walking steering device connected with the vehicle frame widening device, and a turnable trunk driving mechanism for driving the turnable trunk 20 to turn, wherein the vehicle frame widening device comprises two widening plates 2 respectively slidably arranged on two sides of the vehicle frame 1, a linear moving mechanism for driving the two widening plates 2 to stretch and contract, and a first driving mechanism connected with the linear moving mechanism, the walking steering device comprises a plurality of walking wheels 7, a steering transmission mechanism for driving the walking wheels 7 to synchronously turn, and a second driving mechanism connected with the steering transmission mechanism, the steering transmission mechanism comprises a first transmission component connected with the second driving mechanism, a linkage rod 13 connected with the first transmission component, and a second transmission component arranged between the linkage rod 13 and the walking wheels 7 The trolley comprises a carriage 19, a widening plate 2 is provided with a mounting frame 8 for the walking wheels 7 to be mounted, a waist-shaped hole 1-1 for the mounting frame 8 to pass through is formed in the carriage 1, the length direction of the waist-shaped hole 1-1 and the length direction of a linkage rod 13 are consistent with the stretching direction of the widening plate 2, a reversible trunk 20 is rotatably mounted at the tail of the carriage 19 through a rotating shaft 21, and a reversible trunk driving mechanism comprises a driving handle 26 arranged on the right side of a driver seat and a gear rack transmission assembly arranged between the driving handle 26 and the rotating shaft 21.

In this embodiment, the frame widening device is installed on the frame 1, and the frame widening device includes two widening plates 2, a linear movement mechanism for driving the two widening plates 2 to extend and retract, and a first driving mechanism connected to the linear movement mechanism, and the two widening plates 2 are respectively slidably installed on two sides of the frame 1, and during actual use, under the driving action of the first driving mechanism, the linear movement mechanism can drive the two widening plates 2 to extend or retract simultaneously, so as to widen the frame 1.

In this embodiment, turn to the device through setting up the walking that is connected with the frame widening device, and the walking turns to the device and includes a plurality of walking wheels 7, is used for driving a plurality ofly it turns to drive mechanism and with turn to the second actuating mechanism that drive mechanism connects to walk the synchronous steering drive mechanism that turns to of wheel 7, again because it includes first drive assembly, gangbar 13 and second drive assembly to turn to drive mechanism, and first drive assembly is connected with second actuating mechanism, and second drive assembly sets up gangbar 13 with between the walking wheel 7, during the in-service use, under second actuating mechanism's drive action, first drive assembly can be with the drive power transmission of second actuating mechanism to the gangbar 13 on, the second drive assembly can transmit the motion on the gangbar 13 to walking wheel 7 to realize driving the purpose that walking wheel 7 turned to the walking.

In this embodiment, through set up mounting bracket 8 on widening board 2, with walking wheel 7 fixed mounting in the bottom of mounting bracket 8, through set up the confession on frame 1 waist type hole 1-1 that mounting bracket 8 passed, and waist type hole 1-1's length direction, the length direction of gangbar 13 all with the flexible direction of widening board 2 is unanimous, during the in-service use, when widening board 2 stretches out, mounting bracket 8 and walking wheel 7 need remove along with widening board 2 simultaneously, and at this moment, waist type hole 1-1 can provide sufficient removal space for the removal of mounting bracket 8 and walking wheel 7, and when frame 1 widens the back promptly, the interval between two walking wheels 7 of laying relatively is along with the increase also, can guarantee frame 1 and widen the stability of back electric automobile walking.

As shown in fig. 2 and fig. 3, in this embodiment, by installing the reversible trunk driving mechanism for driving the reversible trunk 20 to turn over on the frame 1, since the reversible trunk 20 is rotatably installed at the tail of the carriage 19 through the rotating shaft 21, the reversible trunk driving mechanism includes the driving handle 26 and the rack and pinion transmission assembly arranged between the driving handle 26 and the rotating shaft 21, during practical use, when the driving handle 26 is arranged on the right side of the driver seat, the driver only needs to manually operate the driving handle 26, and through the transmission effect of the rack and pinion transmission assembly, the rotating shaft 21 can be driven to rotate, and the rotatable trunk 20 is driven to turn over by the rotating shaft 21, so as to realize the manual control of the reversible trunk 20, facilitate operation, save space, and enhance the safety of the movement of the reversible trunk.

In this embodiment, the trunk 19 is rotatably provided with a trunk rear cover 19-1, and when the reversible trunk 20 is turned, the reversible trunk 20 can push the trunk rear cover 19-1 to turn.

As shown in fig. 1, in this embodiment, the linear moving mechanism includes a bidirectional screw rod 3, and a first nut 4 and a second nut 5 sleeved on the bidirectional screw rod 3, and the first nut 4 and the second nut 5 are respectively and fixedly mounted on the two widening plates 2.

In this embodiment, when the bidirectional screw rod 3 rotates counterclockwise, the first nut 4 and the second nut 5 can be driven to gradually keep away from the length direction of the bidirectional screw rod 3, because the first nut 4 and the second nut 5 are respectively and fixedly mounted on the two widening plates 2, namely under the driving of the first nut 4 and the second nut 5, the two widening plates 2 can be gradually kept away from the length direction of the bidirectional screw rod 3, the widening of the frame 1 can be realized, when the bidirectional screw rod 3 rotates clockwise, the first nut 4 and the second nut 5 can be driven to gradually get close to the length direction of the bidirectional screw rod 3, and under the driving of the first nut 4 and the second nut 5, the purpose of retracting the two widening plates 2 along the length direction of the bidirectional screw rod 3 can be realized.

As shown in fig. 1, in the present embodiment, the first driving mechanism includes a driving motor 6, a first chain transmission assembly disposed between the driving motor 6 and the bidirectional screw 3, the first chain transmission assembly includes a first driving sprocket fixedly mounted on an output shaft of the driving motor 6 and a first driven sprocket fixedly mounted on the bidirectional screw 3, and the first driving sprocket and the first driven sprocket are connected by a first chain 27.

In this embodiment, the number of the linear moving mechanisms is two, the two linear moving mechanisms are arranged in parallel, the two-way screws 3 of the two linear moving mechanisms are connected through a synchronous chain transmission assembly, and the synchronous chain transmission assembly comprises two synchronous chain wheels fixedly mounted on the two-way screws 3 respectively and a synchronous chain 28 used for connecting the two synchronous chain wheels.

During the in-service use, under synchronous chain drive assembly's transmission effect, two-way lead screws 3 can keep the same direction same speed's rotation to can guarantee the flexible stability of two widening plates 2, excellent in use effect.

As shown in fig. 1, 2 and 3, in the present embodiment, the second driving mechanism includes a driving shaft 9, a transmission shaft 10 mounted on the frame 1, and a second chain transmission assembly disposed between the driving shaft 9 and the transmission shaft 10, the second chain transmission assembly includes a second driving sprocket fixedly mounted on the driving shaft 9 and a second driven sprocket fixedly mounted on the transmission shaft 10, and the second driving sprocket and the second driven sprocket are connected by a second chain 29.

In this embodiment, a steering wheel 30 is attached to the tip end of the drive shaft 9.

As shown in fig. 1, in this embodiment, the first transmission assembly includes a first gear 11 fixedly mounted on the transmission shaft 10 and a first rack 12 engaged with the first gear 11, one end of the first rack 12 is fixedly connected to the linkage rod 13, a first rack mounting seat 14 is disposed on the frame 1, and the other end of the first rack 12 is inserted into the first rack mounting seat 14.

In this embodiment, the second driven sprocket and the first gear 11 are both mounted on the transmission shaft 10, and the second driven sprocket is located above the first gear 11, so that the transmission connection between the second chain transmission assembly and the first transmission assembly of the second driving mechanism can be realized, and during actual use, the transmission process between the second driving mechanism and the first transmission assembly is as follows: the driving shaft 9 drives the second driving sprocket to rotate, the second driving sprocket drives the second driven sprocket to rotate through the second chain 29, the second driven sprocket drives the transmission shaft 10 to rotate, the transmission shaft 10 drives the first gear 11 to rotate, and the first gear 11 drives the first rack 12 to move linearly.

In this embodiment, since one end of the first rack 12 is fixedly connected to the linkage rod 13, in the process of linear movement of the first rack 12, the first rack 12 can drive the linkage rod 13 to perform linear movement along the length direction of the first rack 12.

During actual installation, the first rack installation seat 14 is arranged on the frame 1, one end of the first rack 12 is fixedly connected with the linkage rod 13, the other end of the first rack 12 penetrates through the first rack installation seat 14, and when the first gear 11 drives the first rack 12 to move linearly, the first rack installation seat 14 can support and guide the first rack 12, so that the meshing accuracy of the first rack 12 and the first gear 11 can be ensured.

As shown in fig. 1, in this embodiment, the second transmission assembly includes two second racks 15 arranged in parallel and respectively mounted on the two widening plates 2, and a second gear 16 engaged with the second racks 15, and the second gear 16 is fixedly mounted on the mounting bracket 8.

In this embodiment, a sleeve 18 is fixedly installed at one end of the second rack 15, the sleeve 18 is slidably sleeved on the linkage rod 13, the length direction of the second rack 15 is parallel to the length direction of the first rack 12, and the length direction of the second rack 15 and the length direction of the first rack 12 are both perpendicular to the length direction of the linkage rod 13.

During actual use, the transmission process between the linkage rod and the second transmission assembly is as follows: when the linkage rod 13 moves linearly along the length direction of the first rack 12, the sleeve 18 is sleeved on the linkage rod 13, so the linkage rod 13 can drive the sleeve 18 to move linearly along the length direction of the first rack 12, and the sleeve 18 is fixedly installed at one end of the second rack 15, so the sleeve 18 can drive the second rack 15 to move linearly along the length direction of the first rack 12, in the moving process of the second rack 15, the second rack 15 can drive the second gear 16 to rotate, and the walking wheel 7 is fixedly installed at the bottom end of the installation frame 8 and can drive the walking wheel 7 to turn when the second gear 16 drives the installation frame 8 to rotate.

In this embodiment, the sleeve 18 is slidably sleeved on the linkage rod 13 for the purpose of: in order to realize the widening of the frame 1 and the steering of the walking wheels 7 at the same time, the second rack 15 and the mounting rack 8 are both mounted on the widening plate 2, when the widening plate 2 extends out or retracts, the second rack 15 and the mounting rack 8 can move along with the widening plate 2 at the same time, therefore, only when the sleeve 18 is sleeved on the linkage rod 13 in a sliding mode, the second rack 15 and the mounting rack 8 cannot be prevented from moving along with the widening plate 2, the linkage rod 13 serves as an important transmission piece in the steering transmission process of the walking wheels 7, and the function of connecting the frame widening device with the walking steering device can be achieved.

As shown in fig. 1 and 4, in the present embodiment, the number of the traveling wheels 7 is four, the number of the second gears 16 is four, and one second rack 15 mounted on the same widening plate 2 is engaged with two second gears 16.

In this embodiment, the traveling wheels 7 are electric wheels.

In this embodiment, the widening plate 2 is provided with a second rack mounting base 17, the second rack mounting base 17 is provided with a second rack clamping groove in sliding fit with the second rack 15, and the direction of the second rack clamping groove is perpendicular to the stretching direction of the widening plate 2.

During actual installation, the number of the second rack installation seats 17 is two, when the second rack 15 is slidably installed in the second rack clamping groove, the two second rack installation seats 17 can support the second rack 15, the second rack clamping groove can guide the movement of the second rack 15, and the meshing precision of the second rack 15 and the second gear 16 can be ensured.

As shown in fig. 1, 2 and 3, in this embodiment, the rack-and-pinion assembly includes a driving gear 22, a third rack 23 engaged with the driving gear 22, and a driven gear 24 engaged with the third rack 23, the driving handle 26 is fixedly mounted on an end surface of the driving gear 22, the third rack 23 is slidably mounted on the frame 1, and the driven gear 24 is fixedly mounted on the rotating shaft 21.

In practical use, the transmission process among the driving handle 26, the rack-and-pinion transmission assembly and the rotating shaft 21 is as follows: when a driver manually deflects the driving handle 26, the driving handle 26 drives the driving gear 22 to rotate, the driving gear 22 drives the third rack 23 to move, the third rack 23 drives the driven gear 24 to rotate, the driven gear 24 drives the rotating shaft 21 to rotate, the rotating shaft 21 can drive the reversible trunk 20 to turn over, the reversible trunk 20 can be switched between an unfolding state and a folding state, and when the reversible trunk 20 is in the unfolding state, the capacity of the carriage 19 can be increased.

As shown in fig. 1, in this embodiment, a third rack mounting bracket 25 is disposed on the frame 1, and the third rack 23 is slidably mounted on the third rack mounting bracket 25.

In actual installation, the number of the third rack mounting brackets 25 is two, and the two third rack mounting brackets 25 can support and guide the third rack 23.

As shown in fig. 1, 2 and 3, in practical use, a driver manually drives a steering wheel 30, the steering wheel 30 drives a driving shaft 9 to rotate, the rotation of the driving shaft 9 can be transmitted to the driving shaft 10 through a second chain transmission assembly, the rotation of the driving shaft 10 can be converted into linear movement of a linkage rod 13 through transmission between a first gear 11 and a first rack 12, the linkage rod 13 simultaneously drives two second racks 15 to linearly move, and the traveling wheels 7 can be driven to rotate through transmission between the second racks 15 and a second gear 16, so that the steering of the frame 1 can be realized, the transmission process is stable and reliable, and the synchronous steering accuracy of the traveling wheels 7 can be improved; under the driving action of the first driving mechanism, the linear moving mechanism can drive the two widening plates 2 to extend out or retract simultaneously, so that the aim of widening the frame 1 is fulfilled; the driver can manually deflect the driving handle 26, under the transmission action of the gear rack transmission assembly, the reversible trunk 20 can be switched between the unfolding state and the folding state, and when the reversible trunk 20 is in the unfolding state, the capacity of the carriage 19 can be increased, so that the operation is simple and convenient, the occupied space is small, and the popularization and the application are convenient.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An electric vehicle chassis system, characterized in that: including frame (1), install frame on frame (1) widen the device, with the frame widens walking that the device is connected and turns to the device and be used for driving the trunk actuating mechanism that can overturn trunk (20) upset, the frame is widened the device and is included two respectively slidable mounting in the widening board (2) of frame (1) both sides, be used for driving two widening board (2) flexible rectilinear movement mechanism and with the first actuating mechanism that rectilinear movement mechanism connects, the walking turns to the device and includes a plurality of walking wheels (7), is used for driving a plurality of walking wheel (7) turn to in step turn to drive mechanism and with turn to the second actuating mechanism that actuating mechanism connects, turn to drive mechanism include with the first drive assembly that second actuating mechanism connects, with gangbar (13) that first drive assembly is connected and set up gangbar (13) with the second between walking wheel (7) is in gangbar (13) Two drive assembly, be provided with the confession on widening board (2) mounting bracket (8) of walking wheel (7) installation, the confession has been seted up on frame (1) waist type hole (1-1) that mounting bracket (8) passed, the length direction in waist type hole (1-1) the length direction of gangbar (13) all with it is unanimous to widen board (2) flexible direction, trunk (20) can overturn rotate through pivot (21) and install at carriage (19) afterbody, trunk actuating mechanism can overturn is in including laying in actuating handle (26) on driver's seat right side and setting actuating handle (26) with rack and pinion drive assembly between pivot (21).

2. An electric vehicle chassis system according to claim 1, wherein: the linear moving mechanism comprises a bidirectional screw rod (3), a first nut (4) and a second nut (5) which are sleeved on the bidirectional screw rod (3), and the first nut (4) and the second nut (5) are fixedly installed on the two widening plates (2) respectively.

3. An electric vehicle chassis system according to claim 2, wherein: the first driving mechanism comprises a driving motor (6) and a first chain transmission assembly arranged between the driving motor (6) and the bidirectional screw rod (3), the first chain transmission assembly comprises a first driving chain wheel fixedly mounted on an output shaft of the driving motor (6) and a first driven chain wheel fixedly mounted on the bidirectional screw rod (3), and the first driving chain wheel and the first driven chain wheel are connected through a first chain (27).

4. An electric vehicle chassis system according to claim 1, wherein: the second driving mechanism comprises a driving shaft (9), a transmission shaft (10) installed on the frame (1) and a second chain transmission assembly arranged between the driving shaft (9) and the transmission shaft (10), the second chain transmission assembly comprises a second driving chain wheel fixedly installed on the driving shaft (9) and a second driven chain wheel fixedly installed on the transmission shaft (10), and the second driving chain wheel and the second driven chain wheel are connected through a second chain (29).

5. An electric vehicle chassis system according to claim 4, wherein: the first transmission assembly comprises a first gear (11) fixedly mounted on the transmission shaft (10) and a first rack (12) meshed with the first gear (11), one end of the first rack (12) is fixedly connected with the linkage rod (13), a first rack mounting seat (14) is arranged on the frame (1), and the other end of the first rack (12) penetrates through the first rack mounting seat (14).

6. An electric vehicle chassis system according to claim 5, wherein: the second transmission assembly comprises two second racks (15) which are arranged in parallel and respectively installed on the two widening plates (2) and a second gear (16) meshed with the second racks (15), and the second gear (16) is fixedly installed on the installation frame (8).

7. An electric vehicle chassis system according to claim 6, wherein: one end of the second rack (15) is fixedly provided with a sleeve (18), the sleeve (18) is slidably sleeved on the linkage rod (13), the length direction of the second rack (15) is parallel to the length direction of the first rack (12), and the length direction of the second rack (15) is perpendicular to the length direction of the first rack (12).

8. An electric vehicle chassis system according to claim 7, wherein: the widening plate (2) is provided with a second rack mounting seat (17), a second rack clamping groove in sliding fit with the second rack (15) is formed in the second rack mounting seat (17), and the opening direction of the second rack clamping groove is perpendicular to the stretching direction of the widening plate (2).

9. An electric vehicle chassis system according to claim 1, wherein: the gear rack transmission assembly comprises a driving gear (22), a third rack (23) meshed with the driving gear (22) and a driven gear (24) meshed with the third rack (23), a driving handle (26) is fixedly installed on the end face of the driving gear (22), the third rack (23) is slidably installed on the frame (1), and the driven gear (24) is fixedly installed on the rotating shaft (21).

10. An electric vehicle chassis system according to claim 9, wherein: and a third rack mounting rack (25) is arranged on the frame (1), and the third rack (23) is slidably mounted on the third rack mounting rack (25).