CN218777405U - Double-motor four-wheel drive trolley - Google Patents
Double-motor four-wheel drive trolley Download PDFInfo
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- CN218777405U CN218777405U CN202223139374.0U CN202223139374U CN218777405U CN 218777405 U CN218777405 U CN 218777405U CN 202223139374 U CN202223139374 U CN 202223139374U CN 218777405 U CN218777405 U CN 218777405U
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Abstract
The utility model relates to a vehicle engineering technical field especially relates to a bi-motor four-wheel drive dolly, which comprises a base, left side wheelset and right wheelset, every tire inboard all is equipped with secondary reducing gear box, the input shaft rigid coupling of secondary reducing gear box has the band pulley, two band pulleys that left side wheelset corresponds are connected through first drive belt transmission, two band pulleys that right side wheelset corresponds are connected through second drive belt transmission, a band pulley inboard in two band pulleys that first drive belt corresponds and a band pulley inboard in two band pulleys that the second drive belt corresponds are provided with driving motor respectively, two driving motor are connected to the band pulley that corresponds through primary reducing gear box respectively. The utility model realizes four-wheel drive through two driving motors, so that the trolley has better passing performance and lower production cost; the trolley can be steered in situ, and has better controllability; the primary reduction gearbox and the secondary reduction gearbox form two-stage speed reduction, and the limit output torque of each tire can be greatly improved.
Description
Technical Field
The utility model relates to a vehicle engineering technical field especially relates to a two motor four-wheel drive dolly.
Background
In recent years, four-wheel trolleys are widely used for transportation in the fields of warehousing and manufacturing, and are also used in scenes such as driving of service robots and driving of agricultural robots.
At present, four-wheel trolleys capable of bearing large loads generally drive four tires through four motors respectively, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome the not enough that exists among the prior art, provide a bi-motor four-wheel drive dolly.
The utility model discloses a realize through following technical scheme:
a double-motor four-wheel drive trolley comprises a chassis, a left wheel set and a right wheel set, wherein the left wheel set and the right wheel set are respectively arranged on two sides of the chassis, the left wheel set comprises a left front wheel and a left rear wheel, the right wheel set comprises a right front wheel and a right rear wheel, a secondary reduction gearbox is arranged on the inner side of each tire, the secondary reduction gearbox is fixedly mounted on the chassis, an output shaft of the secondary reduction gearbox is fixedly connected with the corresponding tire, an input shaft of the secondary reduction gearbox is fixedly connected with a belt wheel, the two belt wheels corresponding to the left wheel set are in transmission connection through a first transmission belt, the two belt wheels corresponding to the right wheel set are in transmission connection through a second transmission belt, a driving motor is respectively arranged on the inner side of one belt wheel of the two belt wheels corresponding to the first transmission belt and on the inner side of one belt wheel of the two belt wheels corresponding to the second transmission belt, the two driving motors are respectively connected to the corresponding belt wheels through the primary reduction gearboxes, the input shaft of the primary reduction gearbox is fixedly connected with the output shaft of the corresponding driving motor, and the output shaft of the primary reduction gearbox is fixedly connected with the corresponding belt wheel.
Preferably, a tensioning mechanism is respectively arranged between the first transmission belt and the chassis and between the second transmission belt and the chassis.
Preferably, the tensioning mechanism comprises a U-shaped frame with an upward opening, a pulley is rotatably connected to the middle of the U-shaped frame, the pulley is abutted to one side, close to the chassis, of the corresponding first transmission belt or second transmission belt, two guide pillars are fixedly connected to two ends of the lower side of the U-shaped frame in a perpendicular mode, a guide sleeve matched with the guide pillars is fixedly connected to the chassis, an adjusting bolt is connected to the position, corresponding to the middle of the lower side of the U-shaped frame, of the chassis in a threaded mode, and the tail of the adjusting bolt is abutted to the middle of the lower side of the U-shaped frame.
Preferably, a plurality of parallel U-shaped plates are fixedly connected to the lower side of the chassis.
Preferably, the length direction of the U-shaped plate is perpendicular to the axial direction of the pulley.
Preferably, the opening of the U-shaped plate is upward, a clamping groove matched with the two side edges of the U-shaped plate is arranged below the chassis, and the two side edges of the U-shaped plate are embedded into the corresponding clamping grooves.
Preferably, the two drive motors are arranged symmetrically with respect to the center of the chassis.
Preferably, the inner side of the other of the two pulleys corresponding to the first transmission belt and the inner side of the other of the two pulleys corresponding to the second transmission belt are respectively and rotatably connected to a bearing seat through a bearing, and the bearing seat is fixedly connected to the chassis.
Preferably, the first transmission belt and the second transmission belt are both toothed belts, and tooth grooves meshed with the toothed belts are formed in the peripheries of the belt wheels.
The beneficial effects of the utility model are that:
the utility model has simple structure, realizes four-wheel drive through two driving motors and two driving belts, and ensures that the trolley has better passing performance and lower production cost; by controlling the rotation directions of the two driving motors, the tire corresponding to the left wheel set and the tire corresponding to the right wheel set can rotate reversely, so that the trolley can complete pivot steering, and the trolley has better controllability; the primary reduction gearbox and the secondary reduction gearbox are matched to form two-stage speed reduction, so that the limit output torque of each tire can be greatly improved, and the trolley can normally move under the state of bearing a large load; the two-stage speed reduction is adopted, and the first transmission belt and the second transmission belt are arranged between the two corresponding stages of speed reduction, so that a larger speed reduction ratio can be realized, the production cost of the trolley can be further reduced while each tire has larger limit output torque, the edge warping phenomenon of a chassis can be prevented, and the integral rigidity of the trolley can be ensured; the tensioning mechanism is used for adjusting the tensioning force of the first transmission belt or the second transmission belt and ensuring that the first transmission belt and the second transmission belt can normally transmit without slipping; the tensioning force of the first transmission belt or the second transmission belt can be adjusted by rotating the adjusting bolt, so that the operation is convenient; the U-shaped plate can improve the strength and rigidity of the chassis; the overall rigidity of the trolley can be further ensured by setting the arrangement direction of the U-shaped plates; the U-shaped plate is matched with the clamping groove, so that the overall rigidity of the trolley is improved, the overall thickness of the chassis can be relatively reduced, and the overall occupied space of the chassis is saved; the arrangement form of the two driving motors ensures that the center of mass of the trolley is positioned near the center of the chassis, so that the trolley has higher stability; the stress condition of the corresponding belt wheel can be improved by arranging the bearing and the bearing seat, so that the belt wheel has higher stability; the toothed belt is selected for use, so that the synchronous transmission of the first transmission belt or the second transmission belt and the corresponding belt wheel can be ensured, and the high transmission precision is achieved.
Drawings
Fig. 1 is a schematic view of the structure of the trolley according to the present invention;
fig. 2 is a schematic structural view of a second view angle of the cart according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the cart according to the present invention from a third perspective;
fig. 5 is an enlarged schematic view of B in fig. 4.
In the figure: 1. a left front wheel; 2. a first drive belt; 3. a chassis; 4. a left rear wheel; 5. a secondary reduction gearbox; 6. a primary reduction gearbox; 7. a drive motor; 8. a bearing seat; 9. a pulley; 10. a right rear wheel; 11. a second belt; 12. a U-shaped frame; 13. a right front wheel; 14. a U-shaped plate; 15. a card slot; 16. a pulley; 17. a guide sleeve; 18. a guide post; 19. and adjusting the bolt.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-5, the utility model provides a pair of motor four-wheel drive dolly that the utility model provides a left wheelset and right wheelset that includes chassis 3, arrange respectively in chassis 3 both sides, left wheelset includes two tires of left front wheel 1 and left rear wheel 4, right wheelset includes two tires of right front wheel 13 and right rear wheel 10, and every tire inboard all is equipped with secondary reducing gear box 5, secondary reducing gear box 5 fixed mounting to chassis 3, the output shaft of secondary reducing gear box 5 and the corresponding tire looks rigid coupling, the input shaft rigid coupling of secondary reducing gear box 5 has band pulley 9, and the diameter of every band pulley 9 is the same, and two band pulleys 9 that left wheelset corresponds are connected through first drive belt 2 transmission, and two band pulleys 9 that right wheelset corresponds are connected through second drive belt 11 transmission, one band pulley 9 inboard of two band pulleys 9 that first drive belt 2 corresponds and one band pulley 9 inboard of two band pulleys 9 that second drive belt 11 corresponds are provided with driving motor 7 respectively, and two driving motor 7 are connected to corresponding band pulley 9 through primary reducing gear box 6 respectively, driving motor 7 and primary reducing gear box all fixed mounting to 3, the output shaft corresponding to the output shaft of two band pulleys 9 of the input shaft rigid coupling have realized that this four-wheel drive motor 7 has through the primary reducing gear box 6 simultaneously, and two driving motor 7 through this output shaft rigid couplings that the primary reducing gear box has been had the primary driving motor 7 and had the drive the cost to pass through the primary driving motor rigid coupling to have been low technology scheme simultaneously; by controlling the rotation directions of the two driving motors 7, the tire corresponding to the left wheel set and the tire corresponding to the right wheel set can rotate reversely, so that the trolley can complete pivot steering, and the trolley has better controllability; the primary reduction gearbox 6 and the secondary reduction gearbox 5 are matched to form two-stage reduction, so that the limit output torque of each tire can be greatly improved, and the trolley can normally move under the condition of bearing a large load.
If the pulleys 9 are directly arranged between the secondary reduction gearbox 5 and the corresponding tires, the torque that the first transmission belt 2 needs to transmit is not less than the output torque of the tire corresponding to the other pulley 9 of the two pulleys 9 corresponding to the first transmission belt 2, and the torque that the second transmission belt 11 needs to transmit is not less than the output torque of the tire corresponding to the other pulley 9 of the two pulleys 9 corresponding to the second transmission belt 11. However, the limit torque that can be transmitted by the first driving belt 2 and the second driving belt 11 is low, and when the cart is subjected to a large load, since the cart can be moved only by transmitting a large torque to the tire, the corresponding torque transmission cannot be completed through the first driving belt 2 and the second driving belt 11, and a transmission mode with a large limit transmission torque such as chain transmission needs to be used instead of the first driving belt 2 and the second driving belt 11, which relatively increases the production cost of the cart. And if chain transmission is adopted to carry out larger torque transmission, larger tension force exists between the two secondary reduction gearboxes 5 corresponding to the left wheel set and between the two secondary reduction gearboxes 5 corresponding to the right wheel set of the chassis 3, so that the edge of the chassis 3 is easily warped.
If the primary speed reducer is omitted by directly driving the belt wheel 9 through the driving motor 7, the rotating speed of the belt wheel 9 is the same as that of the driving motor 7, and the diameter of the belt wheel 9 is not too large due to the space limitation of the chassis 3, so that the linear speed of the periphery of the belt wheel 9 is higher than the limit transmission speed of belt transmission, corresponding transmission cannot be completed through the first transmission belt 2 and the second transmission belt 11, alternative schemes such as bevel gear transmission and the like need to be used, and the production cost of the trolley can be relatively increased.
In conclusion, two-stage speed reduction is adopted in the technical scheme, the first transmission belt 2 and the second transmission belt 11 are arranged between the two corresponding-stage speed reduction, a large speed reduction ratio can be realized, each tire has large limit output torque, the production cost of the trolley is further reduced, the phenomenon that the chassis 3 is warped can be prevented, and the overall rigidity of the trolley is guaranteed.
And tensioning mechanisms are respectively arranged between the first transmission belt 2 and the chassis 3 and between the second transmission belt 11 and the chassis 3, and are used for adjusting the tensioning force of the first transmission belt 2 or the second transmission belt 11, so that the first transmission belt 2 and the second transmission belt 11 can be normally transmitted without slipping.
The tensioning mechanism comprises a U-shaped frame 12 with an upward opening, a pulley 16 is rotatably connected to the middle of the U-shaped frame 12, the pulley 16 is abutted to one side, close to the chassis 3, of the corresponding first transmission belt 2 or the corresponding second transmission belt 11 and used for compressing the corresponding first transmission belt 2 or the corresponding second transmission belt 11, two guide posts 18 are vertically and fixedly connected to two ends of the lower side of the U-shaped frame 12, the chassis 3 is fixedly connected with a guide sleeve 17 matched with the guide posts 18, the guide posts 18 are slidably connected into the guide sleeve 17, an adjusting bolt 19 is in threaded connection with the position of the middle of the lower side of the U-shaped frame 12 corresponding to the chassis 3, the tail of the adjusting bolt 19 is abutted to the middle of the lower side of the U-shaped frame 12, the distance between the U-shaped frame 12 and the chassis 3 can be adjusted by rotating the adjusting bolt 19, so that the pressing force between the pulley 16 and the corresponding first transmission belt 2 or the corresponding second transmission belt 11 can be adjusted, and the tensioning force of the first transmission belt 2 or the second transmission belt 11 can be adjusted, and the operation is convenient.
A plurality of parallel U-shaped plates 14 are fixedly connected to the lower side of the chassis 3 and used for improving the strength and rigidity of the chassis 3.
The length direction of the U-shaped plate 14 is perpendicular to the axial direction of the belt wheel 9, due to the tensioning force action of the first transmission belt 2 and the tensioning force action of the second transmission belt 11, corresponding tensioning forces exist between the two secondary reduction gearboxes 5 corresponding to the left wheel set and between the two secondary reduction gearboxes 5 corresponding to the right wheel set of the chassis 3, the direction of the tensioning force is perpendicular to the axial direction of the belt wheel 9, the U-shaped plate 14 has good bending resistance in the length direction, the length direction of the U-shaped plate 14 and the direction of the tensioning force borne by the chassis 3 are arranged in parallel, and the overall rigidity of the trolley can be further guaranteed.
The opening of U-shaped plate 14 upwards, the below of chassis 3 is equipped with the draw-in groove 15 with two side looks adaptations of U-shaped plate 14, two sides of U-shaped plate 14 are inlayed and are established to corresponding draw-in groove 15 and weld mutually with draw-in groove 15, and U-shaped plate 14 cooperatees with draw-in groove 15, can reduce the whole thickness of chassis 3 relatively when improving dolly overall rigidity, saves the occupation space of chassis 3 totality.
The two drive motors 7 are symmetrically arranged relative to the center of the chassis 3, so that the center of mass of the trolley is located near the center of the chassis 3, and the trolley has high stability.
The inner sides of the other belt wheel 9 of the two belt wheels 9 corresponding to the first transmission belt 2 and the inner sides of the other belt wheel 9 of the two belt wheels 9 corresponding to the second transmission belt 11 are respectively and rotatably connected to the bearing seat 8 through bearings, the bearing seat 8 is fixedly connected to the chassis 3, the stress condition of the corresponding belt wheel 9 can be improved, and the chassis has high stability.
The first transmission belt 2 and the second transmission belt 11 are both toothed belts, tooth grooves meshed with the toothed belts are formed in the peripheries of the belt wheels 9, synchronous transmission of the first transmission belt 2 or the second transmission belt 11 and the corresponding belt wheels 9 can be guaranteed, and high transmission precision is achieved.
The utility model provides a two motor four drive dolly the theory of operation is, start the driving motor that left wheelset corresponds, can transmit the moment of torsion to left front wheel and left rear wheel through corresponding primary reduction gearbox, first driving belt and two secondary reduction gearboxes, and make left front wheel and left rear wheel have great limit output torque; the driving motor corresponding to the right wheel set is started, the torque can be transmitted to the right front wheel and the right rear wheel through the corresponding primary reduction gearbox, the second transmission belt and the two secondary reduction gearboxes, and the right front wheel and the right rear wheel have larger limit output torque. The utility model has simple structure, realizes four-wheel drive through two driving motors and two driving belts, and ensures that the trolley has better passing performance and lower production cost; by controlling the rotation directions of the two driving motors, the tire corresponding to the left wheel set and the tire corresponding to the right wheel set can rotate reversely, so that the trolley can complete pivot steering, and the trolley has better controllability; the primary reduction gearbox and the secondary reduction gearbox are matched to form two-stage speed reduction, so that the limit output torque of each tire can be greatly improved, and the trolley can normally move under the state of bearing a large load; the two-stage speed reduction is adopted, and the first transmission belt and the second transmission belt are arranged between the two corresponding stages of speed reduction, so that a larger speed reduction ratio can be realized, the tires have larger ultimate output torque, meanwhile, the production cost of the trolley is further reduced, the edge warping phenomenon of a chassis can be prevented, and the integral rigidity of the trolley is ensured; the tensioning mechanism is used for adjusting the tensioning force of the first transmission belt or the second transmission belt, and ensuring that the first transmission belt and the second transmission belt can normally transmit without slipping; the tensioning force of the first transmission belt or the second transmission belt can be adjusted by rotating the adjusting bolt, so that the operation is convenient; the U-shaped plate can improve the strength and rigidity of the chassis; the overall rigidity of the trolley can be further ensured by setting the arrangement direction of the U-shaped plates; the U-shaped plate is matched with the clamping groove, so that the overall rigidity of the trolley is improved, the overall thickness of the chassis can be relatively reduced, and the overall occupied space of the chassis is saved; the arrangement form of the two driving motors ensures that the center of mass of the trolley is positioned near the center position of the chassis, so that the trolley has higher stability; the bearing and the bearing seat are arranged, so that the stress condition of the corresponding belt wheel can be improved, and the belt wheel has higher stability; the toothed belt is selected for use, so that the synchronous transmission of the first transmission belt or the second transmission belt and the corresponding belt wheel can be ensured, and the high transmission precision is achieved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a two motor four-wheel drive dolly, includes the chassis, arranges left wheelset and right wheelset in the chassis both sides respectively, left wheelset includes two tires of left front wheel and left rear wheel, right wheelset includes two tires of right front wheel and right rear wheel, its characterized in that, every tire inboard all is equipped with secondary reducing gear box, secondary reducing gear box fixed mounting to chassis, the output shaft of secondary reducing gear box and the corresponding tire looks rigid coupling of secondary reducing gear box, the input shaft rigid coupling of secondary reducing gear box has the band pulley, and two band pulleys that left wheelset corresponds are connected through first drive belt transmission, and two band pulleys that right wheelset corresponds are connected through second drive belt transmission, one band pulley inboard of two band pulleys that first drive belt corresponds and one band pulley inboard of two band pulleys that second corresponds are provided with driving motor respectively, and two driving motor are connected to corresponding band pulley through primary reducing gear box respectively, the input shaft of primary reducing gear box and the output shaft looks rigid coupling of corresponding driving motor, the output shaft of primary reducing gear box and the corresponding band pulley looks rigid coupling.
2. The double-motor four-wheel drive trolley as claimed in claim 1, wherein tensioning mechanisms are respectively arranged between the first transmission belt and the chassis and between the second transmission belt and the chassis.
3. The double-motor four-wheel drive trolley as claimed in claim 2, wherein the tensioning mechanism comprises a U-shaped frame with an upward opening, a pulley is rotatably connected to the middle of the U-shaped frame, the pulley abuts against one side of the corresponding first driving belt or the corresponding second driving belt, which is close to the chassis, two guide posts are vertically and fixedly connected to two ends of the lower side of the U-shaped frame, a guide sleeve adapted to the guide posts is fixedly connected to the chassis, an adjusting bolt is threadedly connected to the middle of the lower side of the chassis, which corresponds to the middle of the U-shaped frame, and the tail of the adjusting bolt abuts against the middle of the lower side of the U-shaped frame.
4. The double-motor four-wheel drive trolley as claimed in claim 1, wherein a plurality of parallel U-shaped plates are fixedly connected to the lower side of the chassis.
5. The double-motor four-wheel drive trolley as claimed in claim 4, wherein the length direction of the U-shaped plate is perpendicular to the axial direction of the pulleys.
6. The double-motor four-wheel drive trolley according to claim 4, wherein the U-shaped plate is upward in opening, clamping grooves matched with two side edges of the U-shaped plate are formed below the chassis, and the two side edges of the U-shaped plate are embedded into the corresponding clamping grooves.
7. The double-motor four-wheel drive trolley as claimed in claim 1, wherein the two drive motors are symmetrically arranged relative to the center of the chassis.
8. The double-motor four-wheel drive trolley as claimed in claim 1, wherein the inner side of the other pulley of the two pulleys corresponding to the first transmission belt and the inner side of the other pulley of the two pulleys corresponding to the second transmission belt are respectively rotatably connected to a bearing seat through a bearing, and the bearing seat is fixedly connected to a chassis.
9. The double-motor four-wheel drive trolley as claimed in claim 1, wherein the first transmission belt and the second transmission belt are both toothed belts, and the periphery of the belt wheel is provided with tooth grooves meshed with the toothed belts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223139374.0U CN218777405U (en) | 2022-11-22 | 2022-11-22 | Double-motor four-wheel drive trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223139374.0U CN218777405U (en) | 2022-11-22 | 2022-11-22 | Double-motor four-wheel drive trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218777405U true CN218777405U (en) | 2023-03-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223139374.0U Active CN218777405U (en) | 2022-11-22 | 2022-11-22 | Double-motor four-wheel drive trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218777405U (en) |
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2022
- 2022-11-22 CN CN202223139374.0U patent/CN218777405U/en active Active
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