A functional vehicle chassis and a functional vehicle

Abstract

The application belongs to the technical field of quality inspection and patrol inspection, and discloses a functional vehicle chassis and a functional vehicle. The functional vehicle chassis comprises a chassis frame, a steering shaft, a motor, a first transmission mechanism, a second transmission mechanism, a first driving shaft rotatably arranged on the chassis frame, and a second driving shaft rotatably arranged on the chassis frame. A steering wheel is rotatably connected to the steering shaft. The first driving shaft and the second driving shaft extend along the left-right direction of the vehicle body and are arranged in parallel. The first transmission mechanism is in transmission connection with the first driving shaft. The second transmission mechanism is in transmission connection with the second driving shaft and the steering shaft. The motor can be selectively in transmission connection with the first transmission mechanism or the second transmission mechanism. The functional vehicle chassis can realize straight-line driving, steering, and forward driving during steering by using only one motor, thereby reducing the use of driving members and lowering the manufacturing cost of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quality inspection and patrol inspection, and particularly relates to a functional vehicle chassis and a functional vehicle. BACKGROUND

[0002] The chassis is an important component for supporting and installing various parts and assemblies of a vehicle, and receiving power from a power source to make the vehicle move and ensure normal driving. In particular, the chassis of a functional vehicle needs to be designed differently due to different functions of different functional vehicles. For example, in the process of industrial production, the external environment of a factory building needs to be inspected to eliminate dangerous factors and ensure safe production. However, with the gradual development of productivity in China, the factory building for industrial production is gradually expanded. Manual inspection is time-consuming and laborious, has low work efficiency, and low automation degree. Therefore, more and more factory buildings are assembled into inspection vehicles by adding a chassis to an inspection box to realize automatic inspection.

[0003] In the prior art, a security inspection vehicle includes a movement mechanism and a deviation mechanism. A driving mechanism and the deviation mechanism are cooperatively transmitted by a movement motor, a control motor, a belt, and a gear to drive the entire security inspection vehicle to move or turn. However, since the security inspection vehicle uses two sets of driving motors to realize linear movement and turning of the security inspection vehicle, there are problems of low transmission efficiency and high manufacturing cost of the device. SUMMARY

[0004] The present application aims to provide a functional vehicle chassis and a functional vehicle, which can realize linear movement or turning movement by using one motor while reducing the number of motors used.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] On the one hand, a functional vehicle chassis is provided, which is used to be connected with a vehicle body. The functional vehicle chassis includes a chassis frame, a steering shaft, and a motor. A steering wheel is rotatably connected to the steering shaft. The steering shaft is vertically connected to the chassis frame. The functional vehicle chassis further includes a first transmission mechanism, a second transmission mechanism, a first driving shaft rotatably arranged on the chassis frame, and a second driving shaft rotatably arranged on the chassis frame. The first driving shaft and the second driving shaft are arranged in parallel and extend along the left-right direction of the vehicle body. The first transmission mechanism is in transmission connection with the first driving shaft. The second transmission mechanism is in transmission connection with the second driving shaft and the steering shaft at the same time. The motor can be selectively in transmission connection with the first transmission mechanism or the second transmission mechanism.

[0007] As preferably, the functional vehicle chassis further comprises a first ratchet mechanism and a second ratchet mechanism, when the motor rotates forwardly, the first ratchet mechanism is capable of connecting the power transmission between the motor and the first transmission mechanism, and the second ratchet mechanism is capable of disconnecting the power transmission between the motor and the second transmission mechanism, when the motor rotates reversely, the first ratchet mechanism is capable of disconnecting the power transmission between the motor and the first transmission mechanism, and the second ratchet mechanism is capable of connecting the power transmission between the motor and the second transmission mechanism.

[0008] As preferably, the functional vehicle chassis further comprises a first power shaft, the first power shaft is in driving connection with the motor, the first ratchet mechanism comprises a first ratchet and a first ratchet gear, the first ratchet is in driving connection with the first transmission mechanism, and the first ratchet gear is in movable connection with the first power shaft, when the motor rotates forwardly, the first ratchet is capable of engaging with the first ratchet gear, and when the motor rotates reversely, the first ratchet is capable of disengaging from the first ratchet gear.

[0009] As preferably, the functional vehicle chassis further comprises a second power shaft, the second power shaft is in driving connection with the motor, the second ratchet mechanism comprises a second ratchet and a second ratchet gear, the second ratchet is in driving connection with the second transmission mechanism, and the second ratchet gear is in movable connection with the second power shaft, when the motor rotates forwardly, the second ratchet is capable of disengaging from the second ratchet gear, and when the motor rotates reversely, the second ratchet is capable of engaging with the second ratchet gear.

[0010] As preferably, the motor is fixedly connected with the first power shaft, and the functional vehicle chassis further comprises a first synchronous belt, the first synchronous belt connects the first power shaft and the second power shaft.

[0011] As preferably, the second transmission mechanism comprises a power input shaft, a gear transmission assembly and a second synchronous belt, the power input shaft is fixedly connected with the second ratchet, the gear transmission assembly is in driving connection between the power input shaft and the second drive shaft, the functional vehicle chassis further comprises a steering transmission assembly and a cross shaft, the second synchronous belt connects the power input shaft and the cross shaft, and the steering transmission assembly is in driving connection between the cross shaft and the steering shaft.

[0012] As preferably, the steering transmission assembly comprises a connecting shaft, a steering gear, a first bevel gear and a second bevel gear, the first bevel gear is coaxially fixed on the steering shaft, the second bevel gear and the steering gear are coaxially fixed on the connecting shaft, and the first bevel gear and the second bevel gear are in engagement; the steering transmission assembly further comprises an incomplete gear and an incomplete gear ring, the incomplete gear and the incomplete gear ring are coaxially fixed on the cross shaft, the steering gear is located between the incomplete gear and the incomplete gear ring, the incomplete gear and the incomplete gear ring are capable of engaging with or disengaging from the steering gear, and when one of the incomplete gear and the incomplete gear ring is capable of engaging with the steering gear, the other is disengaged from the steering gear.

[0013] As preferably, the functional vehicle chassis further comprises a support plate fixedly arranged on the chassis frame, and the connecting shaft and the support plate are transitionally matched.

[0014] As preferably, the functional vehicle chassis comprises two steering shafts, each of which is rotatably provided with a steering wheel, and the functional vehicle chassis further comprises a third synchronous belt, the two steering shafts are connected through the third synchronous belt, and the second transmission mechanism is in transmission connection with one of the steering shafts.

[0015] In another aspect, a functional vehicle is provided, which comprises a vehicle body, a camera and the functional vehicle chassis according to any one of claims 1-9, the vehicle body is supported on the chassis frame of the functional vehicle chassis, and the camera is fixedly installed on the vehicle body.

[0016] The functional vehicle chassis provided by the present application has the beneficial effects that: the functional vehicle chassis can realize straight driving, steering and forward driving during steering by using only one motor, the use of driving members is reduced, and the manufacturing cost of the device is reduced.

[0017] The functional vehicle provided by the present application reduces the use of driving members, has a compact overall structure and low manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a first perspective axonometric view of the functional vehicle chassis provided by the present application;

[0019] Figure 2 is a first perspective axonometric view of the functional vehicle provided by the present application;

[0020] Figure 3 is a second perspective axonometric view of the functional vehicle provided by the present application;

[0021] Figure 4 is a schematic view of the first ratchet and pawl mechanism and the second ratchet and pawl mechanism of the functional vehicle chassis provided by the present application;

[0022] Figure 5 is Figure 1 is a local enlarged view of part A in FIG. 8.

[0023] In the figure: 1, vehicle body; 2, chassis frame; 3, steering shaft; 4, steering wheel; 5, motor; 6, first transmission mechanism;

[0024] 7, second transmission mechanism; 71, power input shaft; 72, gear transmission assembly; 73, second synchronous belt;

[0025] 8, first driving shaft; 9, second driving shaft; 10, first driving wheel; 11, second driving wheel;

[0026] 12, first ratchet and pawl mechanism; 121, first ratchet; 122, first pawl;

[0027] 13. Second ratchet mechanism; 131. Second ratchet wheel; 132. Second ratchet;

[0028] 14. First power shaft; 15. Second power shaft; 16. First synchronous belt;

[0029] 17. Steering transmission assembly; 171. Connecting shaft; 172. Steering gear; 173. First bevel gear; 174. Second bevel gear; 175. Incomplete gear; 176. Incomplete gear ring;

[0030] 18. Cross shaft; 19. Support plate; 20. Third synchronous belt; 21. Camera; 22. First limiting member; 23. First elastic member; 24. Second limiting member; 25. Second elastic member. DETAILED DESCRIPTION

[0031] The application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, not all the structures.

[0032] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

[0035] Please refer to Figures 1 to 3 In one aspect, the present embodiment provides a functional vehicle chassis for connecting with a vehicle body 1, the functional vehicle chassis comprising a chassis frame 2, a steering shaft 3, and a motor 5, the steering shaft 3 being rotatably connected with a steering wheel 4, the steering shaft 3 being vertically connected to the chassis frame 2, the functional vehicle chassis further comprising a first transmission mechanism 6, a second transmission mechanism 7, a first drive shaft 8 rotatably arranged on the chassis frame 2, and a second drive shaft 9 rotatably arranged on the chassis frame 2, the first drive shaft 8 and the second drive shaft 9 being arranged in parallel, and the first drive shaft 8 and the second drive shaft 9 both extending along the left-right direction of the vehicle body 1, the first transmission mechanism 6 being in transmission connection with the first drive shaft 8, the second transmission mechanism 7 being in transmission connection with the second drive shaft 9 and the steering shaft 3 at the same time, and the motor 5 being selectively in transmission connection with the first transmission mechanism 6 or the second transmission mechanism 7. Specifically, the first drive shaft 8 is fixedly installed with a first drive wheel 10, and the second drive shaft 9 is fixedly installed with a second drive wheel 11. In this way, when the motor 5 is in transmission connection with the first transmission mechanism 6, the first transmission mechanism 6 connects the power transmission between the motor 5 and the first drive shaft 8, the first drive shaft 8 drives the first drive wheel 10 to rotate, and in turn drives the functional vehicle to move straight forward; when the motor 5 is in transmission connection with the second transmission mechanism 7, the second transmission mechanism 7 connects the power transmission between the motor 5 and the second drive shaft 9 and the power transmission between the motor 5 and the steering shaft 3, respectively, the second drive shaft 9 drives the second drive wheel 11 to rotate, and at the same time, the steering shaft 3 rotates to drive the steering wheel 4 to turn, and in turn drives the functional vehicle to turn while still having forward driving power. The functional vehicle chassis can realize multiple functions such as straight driving, turning, and forward driving while turning, by using only one motor 5, thereby reducing the manufacturing cost of the device.

[0036] Optionally, the functional vehicle chassis further comprises a first ratchet mechanism 12 and a second ratchet mechanism 13, when the motor 5 rotates forward, the first ratchet mechanism 12 can connect the power transmission between the motor 5 and the first transmission mechanism 6, and the second ratchet mechanism 13 can disconnect the power transmission between the motor 5 and the second transmission mechanism 7, when the motor 5 rotates reversely, the first ratchet mechanism 12 can disconnect the power transmission between the motor 5 and the first transmission mechanism 6, and the second ratchet mechanism 13 can connect the power transmission between the motor 5 and the second transmission mechanism 7. In this way, by changing the rotation direction of the motor 5, the engagement or disengagement state of the first ratchet mechanism 12 and the second ratchet mechanism 13 can be changed, so that the motor 5 can be selectively connected with the first transmission mechanism 6 or the second transmission mechanism 7, thereby enabling the functional vehicle to move straight or turn. The first ratchet mechanism 12 and the second ratchet mechanism 13 are simple in structure, safe and reliable, and the switching between power transmission is more stable.

[0037] In other embodiments, a first clutch mechanism and a second clutch mechanism can also be provided, when the functional vehicle moves straight, the first clutch mechanism can connect the power transmission between the motor 5 and the first transmission mechanism 6, and the second clutch mechanism can disconnect the power transmission between the motor 5 and the second transmission mechanism 7; when the functional vehicle turns, the first clutch mechanism can disconnect the power transmission between the motor 5 and the first transmission mechanism 6, and the second clutch mechanism can connect the power transmission between the motor 5 and the second transmission mechanism 7.

[0038] Optionally, please refer to Figures 1 to 4 The functional vehicle chassis further comprises a first power shaft 14, the first power shaft 14 is in transmission connection with the motor 5, the first ratchet mechanism 12 comprises a first ratchet 121 and a first ratchet tooth 122, the first ratchet 121 is in transmission connection with the first transmission mechanism 6, the first ratchet tooth 122 is in movable connection with the first power shaft 14, when the motor 5 rotates forward, the first ratchet 121 can engage with the first ratchet tooth 122, when the motor 5 rotates reversely, the first ratchet 121 can disengage from the first ratchet tooth 122. In this way, by adjusting the forward and reverse rotation of the motor 5, the engagement state of the first ratchet mechanism 12 can be changed, thereby connecting or disconnecting the power transmission between the motor 5 and the first transmission mechanism 6.

[0039] In some embodiments, please refer to Figure 4The first side of the first ratchet 122 is provided with the first limiting piece 22 and the first elastic piece 23, when the motor 5 rotates in the positive direction, the motor 5 drives the first power shaft 14 to rotate in the positive direction, the first power shaft 14 drives the first limiting piece 22 and the first ratchet 122 to rotate synchronously, along the rotating direction of the first ratchet 122, the first limiting piece 22 is located upstream of the first ratchet 122, the first elastic piece 23 is located downstream of the first ratchet 122, the first ratchet 122 is engaged in the tooth groove of the first ratchet wheel 121, the first limiting piece 22 prevents the first ratchet 122 from disengaging from the tooth groove of the first ratchet wheel 121, so that the first ratchet 122 and the first ratchet wheel 121 are always engaged, realizing the synchronous rotation of the first ratchet wheel 121 and the first ratchet 122, thereby connecting the power transmission between the motor 5 and the first transmission mechanism 6; when the motor 5 reverses, the first limiting piece 22 is located downstream of the first ratchet 122, the first elastic piece 23 is located upstream of the first ratchet 122, when the first ratchet 122 is engaged with the first ratchet wheel 121, with the rotation of the first power shaft 14, the first ratchet 122 can rotate to the side of the first elastic piece 23, and the first elastic piece 23 is elastically deformed, and the first ratchet 122 can disengage from the tooth groove of the first ratchet wheel 121, so that the first ratchet 122 and the first ratchet wheel 121 cannot be engaged, the first ratchet 122 cannot drive the first ratchet wheel 121 to rotate, and the power transmission between the motor 5 and the first transmission mechanism 6 is disconnected.

[0040] Optionally, the functional vehicle chassis further comprises a second power shaft 15, the second power shaft 15 is in transmission connection with the motor 5, the second ratchet and pawl mechanism 13 comprises a second ratchet wheel 131 and a second ratchet 132, the second ratchet wheel 131 is in transmission connection with the second transmission mechanism 7, the second ratchet 132 is in movable connection with the second power shaft 15, when the motor 5 rotates in the positive direction, the second ratchet wheel 131 can disengage from the second ratchet 132, when the motor 5 reverses, the second ratchet wheel 131 can engage with the second ratchet 132. By setting in this way, through the positive and reverse rotation of the motor 5, the engagement state of the second ratchet and pawl mechanism 13 can be changed, thereby connecting or disconnecting the power transmission between the motor 5 and the second transmission mechanism 7.

[0041] In some embodiments, the second side of the second ratchet 132 is provided with a second limiting piece 24 and a second elastic piece 25. When the motor 5 rotates forward, the second limiting piece 24 is located downstream of the second ratchet 132, the second elastic piece 25 is located upstream of the second ratchet 132, the motor 5 drives the second power shaft 15 to rotate forward, the second power shaft 15 drives the second ratchet 132 to rotate, when the second ratchet 132 and the second ratchet wheel 131 are engaged, with the rotation of the second power shaft 15, the second ratchet 132 can rotate to one side of the second elastic piece 25, and the second elastic piece 25 is elastically deformed, and the second ratchet 132 can be separated from the tooth groove of the second ratchet wheel 131, the second ratchet 132 and the second ratchet wheel 131 cannot be engaged, the second ratchet 132 cannot drive the second ratchet wheel 131 to rotate, and the power transmission of the motor 5 and the second transmission mechanism 7 is disconnected; when the motor 5 reverses, the motor 5 drives the second power shaft 15 to reverse, the second power shaft 15 drives the second limiting piece 24 and the second ratchet 132 to rotate synchronously, along the rotation direction of the second ratchet 132, the second limiting piece 24 is located upstream of the second ratchet 132, the second elastic piece 25 is located downstream of the second ratchet 132, the second ratchet 132 is engaged in the tooth groove of the second ratchet wheel 131, the second limiting piece 24 prevents the second ratchet 132 from being separated from the tooth groove of the second ratchet wheel 131, so that the second ratchet 132 and the second ratchet wheel 131 always remain engaged, realizing the synchronous rotation of the second ratchet wheel 131 and the second ratchet 132, thereby connecting the power transmission of the motor 5 and the second transmission mechanism 7, and the motor 5 drives the second drive shaft 9 and the steering shaft 3 to rotate at the same time, the functional vehicle chassis drives the functional vehicle to turn while providing driving force for the functional vehicle to move forward.

[0042] Optionally, please refer to Figure 1 and Figure 2 The motor 5 is fixedly connected with the first power shaft 14, and the functional vehicle chassis further comprises a first synchronous belt 16, and the first synchronous belt 16 connects the first power shaft 14 and the second power shaft 15. In this way, the first synchronous belt 16 transmits power accurately during work, and the motor 5 can drive the first power shaft 14 and the second power shaft 15 to rotate synchronously when the motor 5 rotates.

[0043] In other embodiments, the motor 5 can also be connected with the first power shaft 14 and the second power shaft 15 through two synchronous belts respectively. Compared with other embodiments, the scheme in this embodiment makes the overall functional vehicle chassis compact, and facilitates the spatial arrangement of the functional vehicle chassis.

[0044] Optionally, the second transmission mechanism 7 comprises a power input shaft 71 fixedly connected with the second ratchet 131, a gear transmission assembly 72 transmissionally connected between the power input shaft 71 and the second drive shaft 9, and a second synchronous belt 73 connecting the power input shaft 71 and the cross shaft 18, and the functional vehicle chassis further comprises a steering transmission assembly 17 transmissionally connected between the cross shaft 18 and the steering shaft 3. The second transmission mechanism 7 has an input shaft as a power input end, and has two power output ends of the second drive shaft 9 and the cross shaft 18, and the cross shaft 18 is transmissionally connected with the steering shaft 3. In this way, the power provided by the motor 5 can be transmitted to the second drive shaft 9 and the steering shaft 3 respectively, so that the functional vehicle chassis can realize steering and forward driving when steering, and the transmission structure is simplified, and the production cost of the equipment is reduced.

[0045] Optionally, please refer to Figure 5 The steering transmission assembly 17 comprises a connecting shaft 171, a steering gear 172, a first bevel gear 173 coaxially fixed on the steering shaft 3, and a second bevel gear 174 and the steering gear 172 both coaxially fixed on the connecting shaft 171, and the first bevel gear 173 and the second bevel gear 174 are in meshing engagement; the steering transmission assembly 17 further comprises an incomplete gear 175 and an incomplete gear ring 176, both of which are coaxially fixed on the cross shaft 18, and the steering gear 172 is located between the incomplete gear 175 and the incomplete gear ring 176, and both the incomplete gear 175 and the incomplete gear ring 176 can be in meshing engagement or disengagement with the steering gear 172, and when one of the incomplete gear 175 and the incomplete gear ring 176 can be in meshing engagement with the steering gear 172, the other is disengaged from the steering gear 172. In this way, when one of the incomplete gear 175 and the incomplete gear ring 176 can be in meshing engagement with the steering gear 172, the steering gear 172 rotates to drive the second bevel gear 174 to rotate, the first bevel gear 173 is in meshing engagement with the second bevel gear 174 to rotate, and in turn drives the steering shaft 3 to rotate.

[0046] Specifically, the incomplete gear 175 is provided with a first tooth, and the incomplete gear ring 176 is provided with a second tooth. It should be noted that during straight driving, the steering wheel 4 is in the same direction as the first driving wheel 10 and the second driving wheel 11, and the position of the steering gear 172 can be kept stable. With the rotation of the cross shaft 18, the incomplete gear 175 and the incomplete gear ring 176 rotate synchronously, and when one of the incomplete gear 175 and the incomplete gear ring 176 meshes with the steering gear 172, for example, the incomplete gear 175 meshes with the steering gear 172, the incomplete gear ring 176 is separated from the steering gear 172, at this time the incomplete gear 175 can drive the steering gear 172 to rotate through an engagement angle, and then the steering gear 172 is separated from the incomplete gear 175, and the position of the steering gear 172 can be kept stable; after the cross shaft 18 continues to rotate by a set angle, the incomplete gear ring 176 meshes with the steering gear 172, the incomplete gear 175 and the steering gear 172 are separated, and the incomplete gear ring 176 can drive the steering gear 172 to rotate reversely through an engagement angle, so that the steering gear 172 returns to the initial state, at this time the steering wheel is in the same direction as the first driving wheel 10 and the second driving wheel 11.

[0047] It should be understood that the set angle can be set according to actual needs, for example, when the functional vehicle chassis is used for a patrol vehicle, the patrol vehicle automatically drives around the periphery of the factory building, when encountering a corner, it needs to turn through an angle, and the set angle can ensure that the functional vehicle can turn through the corner.

[0048] Optionally, please refer to Figures 1 to 3 The functional vehicle chassis further comprises a support plate 19 fixedly arranged on the chassis frame 2, and the connecting shaft 171 and the support plate 19 are in transition fit. In this way, the support plate 19 supports and limits the connecting shaft 171, and at the same time, during the turning process, when the incomplete gear ring 176 and the incomplete gear 175 are both disengaged from the steering gear 172, the position of the connecting shaft 171 can be kept stable, thereby keeping the steering gear 172 stable; when one of the incomplete gear 175 and the incomplete gear ring 176 can mesh with the steering gear 172, the driving force provided by the motor 5 can overcome the friction force between the transition fit of the connecting shaft 171 and the support plate 19, so that the connecting shaft 171 rotates relative to the support plate 19, thereby completing the steering of the steering wheel 4.

[0049] In other embodiments, a plurality of first teeth can also be provided on the incomplete gear 175, and a plurality of second teeth can also be provided on the incomplete gear ring 176. When any one of the first teeth on the incomplete gear 175 meshes with the steering gear 172, each of the second teeth on the incomplete gear ring 176 is separated from the steering gear 172; when any one of the first teeth on the incomplete gear ring 176 meshes with the steering gear 172, each of the second teeth on the incomplete gear 175 is separated from the steering gear 172.

[0050] In other embodiments, a worm gear mechanism can also be provided instead of the first bevel gear 173 and the second bevel gear 174, the worm gear is fixed on the steering shaft 3, and the worm is fixed on the connecting shaft 171, the worm gear meshes with the worm to rotate. When one of the incomplete gear 175 and the incomplete gear ring 176 can mesh with the steering gear 172, the steering gear 172 rotates and the worm rotates, the worm gear meshes with the worm to rotate, thereby driving the steering shaft 3 to rotate.

[0051] Optionally, please refer to Figure 1 , Figure 2 and Figure 5 , the functional vehicle chassis includes two steering shafts 3, each steering shaft 3 is rotatably provided with a steering wheel 4, and the functional vehicle chassis further includes a third synchronous belt 20, the two steering shafts 3 are connected through the third synchronous belt 20, and the second transmission mechanism 7 is in transmission connection with one of the steering shafts 3. In this way, the third synchronous belt 20 is provided, so that the second transmission mechanism 7 only needs to be in transmission connection with one of the steering shafts 3, and the steering synchronization of the two steering shafts 3 can be realized, thereby enhancing the steering stability of the functional vehicle chassis, and at the same time, the structure of the functional vehicle chassis is simple and the transmission is reliable.

[0052] On the other hand, please refer to Figure 2 and Figure 3 , a functional vehicle is provided, which includes a vehicle body 1, a camera 21 and the above-mentioned functional vehicle chassis, the vehicle body 1 is supported on the chassis frame 2 of the functional vehicle chassis, and the camera 21 is fixedly installed on the vehicle body 1. Optionally, the functional vehicle includes a plurality of cameras 21, in this way, the camera dead angle of the camera 21 is reduced, and the functional vehicle is more safe and reliable.

[0053] In some embodiments, the functional vehicle is a factory inspection vehicle, and the functional vehicle further includes a control assembly, the control assembly sets the running track of the functional vehicle according to the actual inspection path of the factory, based on the running speed and the wheel diameter of the functional vehicle, the control assembly calculates and determines the time points at which the functional vehicle needs to turn, and based on the turning angles of each turn, the control assembly controls the motor 5 to switch forward rotation or reverse rotation at the corresponding time points, so that the inspection of factories of different sizes can be adapted. The factory inspection vehicle does not need manual operation, which saves time and effort and improves work efficiency. The functional vehicle can also be used for automatic operation and production in road, farm and other scenes.

[0054] The working principle of the functional vehicle is as follows:

[0055] When the functional vehicle needs to travel straight, the motor 5 rotates forward to drive the second power shaft 15 to rotate forward, the second power shaft 15 drives the second ratchet 132 to rotate forward, the second ratchet 132 is disengaged from the second ratchet wheel 131, the power transmission between the motor 5 and the second transmission mechanism 7 is disconnected, the second drive shaft 9 does not rotate actively, and the steering shaft 3 does not rotate; at the same time, the second power shaft 15 drives the first power shaft 14 to rotate forward through the first synchronous belt 16, thereby driving the first ratchet 122 to rotate forward, the first ratchet wheel 121 and the first ratchet 122 are engaged to rotate forward, the first drive shaft 8 is driven to rotate through the first transmission mechanism 6, and then the first drive wheel 10 is driven to rotate, which cooperates with the steering wheel 4 to drive the functional vehicle to travel straight.

[0056] When the functional vehicle needs to turn, the motor 5 reverses to drive the second power shaft 15 to rotate reversely, the second power shaft 15 drives the second ratchet 132 to rotate reversely, the second ratchet wheel 131 and the second ratchet 132 are engaged to rotate reversely, the second ratchet 132 drives the power input shaft 71 to rotate reversely, and the power is transmitted to the second drive shaft 9 and the cross shaft 18 through the gear transmission assembly 72 and the second synchronous belt 73 respectively, the second drive shaft 9 rotates forward to drive the second drive wheel 11 to rotate, so that the functional vehicle turns while still having driving force for forward movement; similarly, the second power shaft 15 drives the first power shaft 14 to rotate reversely through the first synchronous belt 16, the power transmission between the motor 5 and the first transmission mechanism 6 is disconnected through the first ratchet wheel and ratchet mechanism 12, and the first drive shaft 8 does not rotate actively; at the same time, the cross shaft 18 rotates forward to drive the incomplete gear ring 176 and the incomplete gear 175 to rotate forward, when the steering gear 172 and the incomplete gear ring 176 are engaged, the steering gear 172 drives the second bevel gear 174 to rotate forward through the connecting shaft 171, thereby driving the steering shaft 3 to rotate through the first bevel gear 173 engaged with the second bevel gear 174, the steering wheel 4 turns, and when the engagement between the steering gear 172 and the incomplete gear ring 176 is completed, the steering gear 172 is engaged with the incomplete gear 175 to rotate reversely, thereby driving the steering wheel 4 to return to the normal position, which facilitates straight travel after turning.

[0057] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A functional vehicle chassis for connecting with a vehicle body (1), comprising a chassis frame (2), a steering shaft (3) and an electric motor (5), a steering wheel (4) being rotatably connected to the steering shaft (3), the steering shaft (3) being vertically connected to the chassis frame (2), characterized in that, The functional vehicle chassis further comprises a first transmission mechanism (6), a second transmission mechanism (7), a first drive shaft (8) rotatably arranged on the chassis frame (2), and a second drive shaft (9) rotatably arranged on the chassis frame (2), the first drive shaft (8) and the second drive shaft (9) are arranged in parallel, and the first drive shaft (8) and the second drive shaft (9) both extend along the left-right direction of the vehicle body (1), the first transmission mechanism (6) is in transmission connection with the first drive shaft (8), the second transmission mechanism (7) is in transmission connection with the second drive shaft (9) and the steering shaft (3) at the same time, and the motor (5) can be selectively in transmission connection with the first transmission mechanism (6) or the second transmission mechanism (7); The functional vehicle chassis further comprises a first ratchet and tooth mechanism (12) and a second ratchet and tooth mechanism (13), when the motor (5) rotates forward, the first ratchet and tooth mechanism (12) can connect the power transmission between the motor (5) and the first transmission mechanism (6), and the second ratchet and tooth mechanism (13) can disconnect the power between the motor (5) and the second transmission mechanism (7), when the motor (5) reverses, the first ratchet and tooth mechanism (12) can disconnect the power transmission between the motor (5) and the first transmission mechanism (6), and the second ratchet and tooth mechanism (13) can connect the power transmission between the motor (5) and the second transmission mechanism (7); The second transmission mechanism (7) comprises a power input shaft (71), a gear transmission assembly (72) and a second synchronous belt (73), the power input shaft (71) is fixedly connected with the second ratchet (131), the gear transmission assembly (72) is in transmission connection between the power input shaft (71) and the second drive shaft (9), the functional vehicle chassis further comprises a steering transmission assembly (17) and a cross shaft (18), the second synchronous belt (73) connects the power input shaft (71) and the cross shaft (18), and the steering transmission assembly (17) is in transmission connection between the cross shaft (18) and the steering shaft (3); The steering transmission assembly (17) comprises a connecting shaft (171), a steering gear (172), a first bevel gear (173) and a second bevel gear (174), the first bevel gear (173) is coaxially fixed on the steering shaft (3), the second bevel gear (174) and the steering gear (172) are both coaxially fixed on the connecting shaft (171), and the first bevel gear (173) and the second bevel gear (174) are in meshing engagement. The steering transmission assembly (17) further comprises an incomplete gear (175) and an incomplete gear ring (176), both of which are coaxially fixed to the cross shaft (18), the steering gear (172) is located between the incomplete gear (175) and the incomplete gear ring (176), both of which can be engaged or separated with the steering gear (172), and when one of the incomplete gear (175) and the incomplete gear ring (176) can be engaged with the steering gear (172), the other is separated from the steering gear (172).

2. The functional vehicle chassis of claim 1, wherein, The functional vehicle chassis further comprises a first power shaft (14) in transmission connection with the motor (5), the first ratchet and pawl mechanism (12) comprises a first ratchet (121) and a first pawl (122), the first ratchet (121) is in transmission connection with the first transmission mechanism (6), and the first pawl (122) is in movable connection with the first power shaft (14), when the motor (5) rotates forward, the first ratchet (121) can be engaged with the first pawl (122), and when the motor (5) reverses, the first ratchet (121) can be disengaged from the first pawl (122).

3. The functional vehicle chassis of claim 2, wherein, The functional vehicle chassis further comprises a second power shaft (15) in transmission connection with the motor (5), the second ratchet and pawl mechanism (13) comprises a second ratchet (131) and a second pawl (132), the second ratchet (131) is in transmission connection with the second transmission mechanism (7), and the second pawl (132) is in movable connection with the second power shaft (15), when the motor (5) rotates forward, the second ratchet (131) can be disengaged from the second pawl (132), and when the motor (5) reverses, the second ratchet (131) can be engaged with the second pawl (132).

4. The functional vehicle chassis of claim 3, wherein, The motor (5) is fixedly connected with the first power shaft (14), and the functional vehicle chassis further comprises a first synchronous belt (16) connecting the first power shaft (14) and the second power shaft (15).

5. The functional vehicle chassis of claim 1, wherein, The functional vehicle chassis further comprises a support plate (19) fixedly arranged on the chassis frame (2), and the connecting shaft (171) and the support plate (19) are in transition fit.

6. The functional vehicle chassis according to any one of claims 1-5, characterized in that, The functional vehicle chassis comprises two steering shafts (3), each of which is rotatably provided with a steering wheel (4), and the functional vehicle chassis further comprises a third synchronous belt (20) connecting the two steering shafts (3), and the second transmission mechanism (7) is in transmission connection with one of the steering shafts (3).

7. A utility vehicle characterized by, The functional vehicle comprises a vehicle body (1), a camera (21) and the functional vehicle chassis according to any one of claims 1-6, the vehicle body (1) is supported on the chassis frame (2) of the functional vehicle chassis, and the camera (21) is fixedly installed on the vehicle body (1).

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