An unmanned vehicle chassis with an adjustment function

Abstract

The present invention relates to a chassis of an unmanned vehicle with an adjustment function, which includes a main bracket arranged horizontally and with adjustable height. Two symmetrically arranged and vertically arranged sub-brackets are installed on the top surface of the main bracket, and connecting rods are installed at both ends of the main bracket; through the provided height adjustment mechanism, the height of the main bracket can be adjusted; when the unmanned vehicle travels on a road section with poor road conditions, the height of the main bracket can be adjusted through the signal transmitted by the vibration sensor, avoiding scratches on the main bracket and the components installed on the main bracket caused by road bumps and the like, playing a protective role; through the provided battery installation mechanism, the battery compartments on both sides can be driven to move synchronously and relatively on the base. When the battery needs to be replaced or maintained, the battery compartments on both sides can protrude to both sides of the main bracket, thus facilitating the operation of the battery in the battery compartment.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent vehicles, and particularly to an unmanned vehicle chassis with an adjustment function. Background Technique

[0002] An unmanned vehicle, also known as an autonomous vehicle, is an intelligent vehicle that realizes driverless operation through a computer system. The autonomous vehicle relies on the collaborative cooperation of artificial intelligence, vision computing, radar, monitoring devices, and the global positioning system, enabling the computer to automatically and safely operate a motor vehicle without any active operation by humans; an unmanned vehicle mainly consists of a power system, a steering system, a vehicle body frame, and a vehicle chassis, etc.; currently, the application fields of unmanned vehicles are very extensive, such as for advertising and logistics distribution, etc.

[0003] The vehicle chassis is arranged below the vehicle body frame and plays roles such as support and component installation. Generally, components such as batteries are installed on the vehicle chassis; on the one hand, when the unmanned vehicle goes out to perform operations, the working areas and environments are different. When the unmanned vehicle is driving on some rough roads, the uneven road surface not only easily causes the vehicle body to vibrate violently, but also some protruding foreign objects are likely to scratch components such as the battery installed on the chassis, easily causing faults in the unmanned vehicle. However, the height of the existing unmanned vehicle chassis is fixed, and it is difficult to avoid such situations; on the other hand, the batteries on the existing unmanned vehicles are generally fixed on the vehicle chassis through brackets and bolts. When it is necessary to replace or maintain the battery, etc., it is necessary to disassemble the vehicle body frame, which is very inconvenient. In view of this, we propose an unmanned vehicle chassis with an adjustment function. Summary of the Invention

[0004] The purpose of the present invention is to provide an unmanned vehicle chassis with an adjustment function to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An unmanned vehicle chassis with an adjustment function includes a main bracket arranged horizontally and with adjustable height. Two symmetrically arranged and vertically arranged sub-brackets are installed on the top surface of the main bracket. Connecting rods are installed at both ends of the main bracket. A threaded hole is opened at the center of the connecting rod, and sliding holes are opened on both sides of the threaded hole; a height adjustment mechanism for adjusting the height of the main bracket is provided on one side of each connecting rod; a bumper is provided on one side of each height adjustment mechanism; a protective plate is provided below the main bracket; a battery installation mechanism is provided between the two sub-brackets.

[0007] As a preferred technical solution of the present invention, the height adjustment mechanism includes a housing with an open structure on its inner sidewall. A threaded rod is rotatably connected near the middle inside the housing. Guide rods are fixed on both sides of the threaded rod. The top surface of the housing is fixedly connected by bolts to a first motor, and the output shaft of the first motor passes through the housing and is coaxially keyed to the threaded rod; the threaded hole is threadedly connected to the threaded rod, and the sliding hole is slidably connected to the corresponding guide rod.

[0008] As a preferred technical solution of the present invention, threaded columns are installed at both sides of the bottom surface of the main bracket, and nuts are threadedly connected to the threaded columns; through holes are provided at the four corners of the guard plate, the threaded columns pass through the corresponding through holes, and the nuts are pressed against the guard plate; a vibration sensor is fixedly connected to the top surface of the guard plate by bolts.

[0009] As a preferred technical solution of the present invention, the battery installation mechanism includes a U-shaped base, the base is located between two sub-brackets and is fixedly connected to the sub-brackets. The top surface of the base is fixedly connected by bolts to a cover plate. Two symmetrically arranged battery compartments are provided inside the base, and the top surfaces of the battery compartments are both of an open structure.

[0010] As a preferred technical solution of the present invention, two screw rods that are coaxially fixed and have opposite thread winding directions are provided between the two battery compartments. A second motor is fixedly connected to the outer wall of one side of the base by bolts, and the output shaft of the second motor passes through the outer wall of the base and is coaxially keyed to the screw rod.

[0011] As a preferred technical solution of the present invention, connecting plates are provided on both screw rods. First hinge seats are installed at both the upper and lower ends of the connecting plate. Two symmetrically arranged second hinge seats are provided at the upper and lower sides between the two connecting plates, and the second hinge seats are respectively fixedly connected to the battery compartments on both sides by bolts. Movable plates are provided between the first hinge seats and the second hinge seats, and both ends of the movable plate are hinged to the first hinge seat and the second hinge seat respectively.

[0012] As a preferred technical solution of the present invention, chutes are provided at the bottom surface and both sidewalls of the base, and guide rails are fixedly connected to the bottom surface and both sidewalls of the battery compartment by rivets, and the guide rails are slidably connected to the corresponding chutes.

[0013] As a preferred technical solution of the present invention, a plurality of heat dissipation grooves are provided on the top surface of the cover plate.

[0014] As a preferred technical solution of the present invention, a protective cover is fixedly connected by bolts to the outer part of the first motor on the top surface of the housing.

[0015] As a preferred technical solution of the present invention, two symmetrically arranged connecting blocks are fixedly connected to the bumper through bolts, and the ends of the connecting blocks are fixedly connected to the housing through bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By providing a height adjustment mechanism: that is, the output shafts of the first motors on both sides drive the threaded rods to rotate synchronously. As the threaded rods rotate, the main bracket moves in the vertical direction. Through the movement of the main bracket, the height of the main bracket can be adjusted; when the unmanned vehicle travels to a section with poor road conditions, the height of the main bracket can be adjusted according to the signal transmitted by the vibration sensor, avoiding scratches on the main bracket and the components installed on the main bracket caused by road bumps, etc., playing a protective role.

[0018] 2. By providing a battery installation mechanism: that is, the second motor drives two lead screws to rotate. As the lead screws rotate, the movable plate and the like can be driven to move synchronously. As the movable plate moves, the battery compartments on both sides can be driven to move relatively synchronously on the base. When the battery needs to be replaced or maintained, the battery compartments on both sides can protrude to both sides of the main bracket, facilitating the operation of the battery in the battery compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is one of the schematic diagrams of partial structures of the present invention;

[0021] Figure 3 is another schematic diagram of partial structures of the present invention;

[0022] Figure 4 is a schematic diagram of the partial exploded structure of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the height adjustment mechanism of the present invention;

[0024] Figure 6 is a schematic diagram of the structure of the protective plate of the present invention;

[0025] Figure 7 is a schematic diagram of the structure of the battery installation mechanism of the present invention;

[0026] Figure 8 is one of the schematic diagrams of partial structures of the battery installation mechanism of the present invention;

[0027] Figure 9 is another schematic diagram of partial structures of the battery installation mechanism of the present invention;

[0028] Figure 10 This is the third partial structural schematic diagram of the battery installation mechanism in the present invention;

[0029] Figure 11 This is the fourth partial structural schematic diagram of the battery installation mechanism in the present invention;

[0030] Figure 12 This is the partial exploded schematic diagram of the battery installation mechanism in the present invention.

[0031] In the figure:

[0032] 1. Main bracket; 11. Threaded column; 12. Nut;

[0033] 2. Sub-bracket;

[0034] 3. Connecting rod; 31. Threaded hole; 32. Sliding hole;

[0035] 4. Height adjustment mechanism; 41. Housing; 42. Threaded rod; 43. Guide rod; 44. Protective cover; 45. First motor;

[0036] 5. Bumper; 51. Connecting block;

[0037] 6. Protective plate; 61. Through hole; 62. Vibration sensor;

[0038] 7. Battery installation mechanism; 71. Base; 711. Chute; 72. Cover plate; 721. Heat dissipation slot; 73. Battery compartment; 731. Guide rail; 74. Lead screw; 75. Connecting plate; 76. First hinge seat; 77. Second hinge seat; 78. Movable plate; 79. Second motor. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0042] This embodiment provides a technical solution:

[0043] Please refer to Figures 1-3 , a chassis of an autonomous vehicle with an adjustment function, including a main bracket 1 arranged horizontally and with adjustable height. On the top surface of the main bracket 1, two symmetrically arranged and vertically arranged sub-brackets 2 are installed. Connecting rods 3 are installed at both ends of the main bracket 1. A threaded hole 31 is provided at the center of the connecting rod 3, and sliding holes 32 are provided on both sides of the threaded hole 31.

[0044] It should be added that the main bracket 1 is fixedly connected to the sub-bracket 2 by bolts, and both ends of the main bracket 1 are tightly welded to the connecting rods 3 on both sides.

[0045] Please refer to Figures 4-5 , a height adjustment mechanism 4 for adjusting the height of the main bracket 1 is provided on one side of each connecting rod 3. The height adjustment mechanism 4 includes a housing 41 with an open inner wall structure. A threaded rod 42 is rotatably connected near the middle inside the housing 41. Guide rods 43 are fixed on both sides of the threaded rod 42. The top surface of the housing 41 is fixedly connected to a first motor 45 by bolts. The output shaft of the first motor 45 passes through the housing 41 and is coaxially key-connected to the threaded rod 42; the threaded hole 31 is threadedly connected to the threaded rod 42, and the sliding hole 32 is slidably connected to the corresponding guide rod 43.

[0046] In this embodiment, shields 44 are fixedly connected to the outside of the first motor 45 on the top surface of the housing 41 by bolts. The shields 44 provided outside the first motor 45 play a role in protecting the first motor 45.

[0047] It should be noted that both ends of the threaded rod 42 in this embodiment are rotatably connected to the inner top surface and inner bottom surface of the housing 41 through bearings. The bearings play a role in supporting and enabling the rotation of the threaded rod 42, facilitating the continuous and stable rotation of the threaded rod 42.

[0048] It should be added that the width of the guide rod 43 in this embodiment is fixedly connected to the housing 41 by bolts.

[0049] Please refer to Figure 6, a bumper 5 is provided on one side of the height adjustment mechanism 4; a guard plate 6 is provided below the main bracket 1. Threaded posts 11 are installed at both sides of the bottom surface of the main bracket 1, and nuts 12 are threadedly connected to the threaded posts 11; through holes 61 are provided at the four corners of the guard plate 6, and the threaded posts 11 pass through the corresponding through holes 61, and the nuts 12 are tightened against the guard plate 6; a vibration sensor 62 is fixedly connected to the top surface of the guard plate 6 by bolts.

[0050] In this embodiment, two symmetrically arranged connecting blocks 51 are fixedly connected to the bumper 5 by bolts, and the end of the connecting block 51 is fixedly connected to the housing 41 by bolts. By providing the connecting blocks 51, it is convenient to play a stable connecting role between the bumper 5 and the housing 41 and facilitate fixing the bumper 5.

[0051] It should be added that the threaded post 11 in this embodiment is tightly welded to the bottom surface of the main bracket 1.

[0052] In addition, the purpose of setting the vibration sensor 62 is that when the road surface is uneven and scratches the guard plate 6, or when the road surface is uneven and causes the unmanned vehicle to jolt violently, the vibration sensor 62 receives the vibration signal and transmits the signal outward, and the first motor 45 runs synchronously, thereby adjusting the height of the main bracket 1 and avoiding damage to the guard plate 6, the main bracket 1 and the components installed on the main bracket 1.

[0053] Please refer to Figures 7-12 , a battery installation mechanism 7 is provided between the two sub-brackets 2. The battery installation mechanism 7 includes a U-shaped base 71, the base 71 is located between the two sub-brackets 2 and fixedly connected to the sub-brackets 2, a cover plate 72 is fixedly connected to the top surface of the base 71 by bolts, two symmetrically arranged battery compartments 73 are provided inside the base 71, the top surfaces of the battery compartments 73 are of an open structure, two coaxially fixed and oppositely threaded lead screws 74 are provided between the two battery compartments 73, a second motor 79 is fixedly connected to the outer wall of one side of the base 71 by bolts, and the output shaft of the second motor 79 passes through the outer wall of the base 71 and is coaxially keyed to the lead screw 74; connecting plates 75 are provided on both lead screws 74, first hinge seats 76 are installed at the upper and lower ends of the connecting plates 75, two symmetrically arranged second hinge seats 77 are provided at the upper and lower sides between the two connecting plates 75, and the second hinge seats 77 are respectively fixedly connected to the battery compartments 73 on both sides by bolts, and movable plates 78 are provided between the first hinge seats 76 and the second hinge seats 77, and the two ends of the movable plate 78 are respectively hinged to the first hinge seat 76 and the second hinge seat 77.

[0054] In this embodiment, sliding grooves 711 are provided at the bottom surface and both side walls of the base 71, and guide rails 731 are fixedly connected to the bottom surface and both side walls of the battery compartment 73 by rivets. The guide rails 731 are slidably connected to the corresponding sliding grooves 711. The arrangements of the guide rails 731 and the sliding grooves 711 play a guiding role in the movement of the two battery compartments 73, facilitating the stable sliding of the battery compartments 73 on the base 71 and ensuring the stability of the batteries in the battery compartments 73.

[0055] In this embodiment, a plurality of heat dissipation grooves 721 are provided on the top surface of the cover plate 72. The arrangements of the plurality of heat dissipation grooves 721 are conducive to the communication between the battery compartment 73 and the external air, and are conducive to the heat dissipation of the batteries in the battery compartment 73.

[0056] It should be noted that both ends of the lead screw 74 are rotatably connected to the inner walls of both sides of the base 1 through bearings. The bearings play a role in supporting and enabling the rotation of the lead screw 74, facilitating the synchronous and stable rotation of the two lead screws 74.

[0057] It should be added that the base 71 in this embodiment is fixedly connected to the auxiliary brackets 2 on both sides by bolts. The two lead screws 74 are coaxially and tightly welded. The first hinge seats 76 are respectively fixedly connected to both ends of the connecting plate 75 by bolts.

[0058] It should be noted that the first motor 45 and the second motor 79 in this embodiment are existing conventional technologies and will not be elaborated here.

[0059] The specific principle is as follows: When the vibration sensor 62 receives a vibration signal, the power supplies of the two first motors 45 are turned on and start working synchronously. The output shafts of the two first motors 45 rotate and synchronously drive the threaded rods 42 on both sides to rotate. As the threaded rods 42 rotate, the connecting rod 3 moves upward along the two guide rods 43, and the connecting rod 3 synchronously drives the main bracket 1 to move upward. When the main bracket 1 moves to an appropriate height, the first motor 45 stops running. At this time, the height of the main bracket 1 from the ground increases;

[0060] When the battery needs to be replaced, the user first turns on the power supply of the second motor 79. The output shaft of the second motor 79 rotates and drives the two lead screws 74 to rotate synchronously. Under the rotation of the lead screws 74, the two connecting plates 75 move relatively synchronously. The connecting plates 75 synchronously drive the first hinge seats 76 to move. At this time, the movable plate 78 moves synchronously and pushes the battery compartments 73 to both sides. The guide rails 731 slide along the sliding grooves 711. At this time, the battery compartments 73 protrude to both sides of the main bracket 1. When the battery compartments 73 move to an appropriate position, the user stops the power supply of the second motor 79. Finally, the user can take out the battery for replacement.

[0061] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An unmanned vehicle chassis with an adjustment function, including a main bracket (1) arranged horizontally and with adjustable height. It is characterized in that: On the top surface of the main bracket (1), two symmetrically arranged and vertically arranged sub-brackets (2) are installed. Connecting rods (3) are installed at both ends of the main bracket (1). A threaded hole (31) is opened at the center of the connecting rod (3), and sliding holes (32) are opened on both sides of the threaded hole (31); on one side of each connecting rod (3), a height adjustment mechanism (4) for adjusting the height of the main bracket (1) is provided; on one side of each height adjustment mechanism (4), a bumper (5) is provided; a guard plate (6) is provided below the main bracket (1); a battery installation mechanism (7) is provided between the two sub-brackets (2). The height adjustment mechanism (4) includes a housing (41) with an open inner wall structure. A threaded rod (42) is rotatably connected near the middle inside the housing (41). Guide rods (43) are fixed on both sides of the threaded rod (42). The top surface of the housing (41) is fixedly connected by bolts to a first motor (45). The output shaft of the first motor (45) passes through the housing (41) and is coaxially keyed to the threaded rod (42); the threaded hole (31) is threadedly connected to the threaded rod (42), and the sliding hole (32) is slidably connected to the corresponding guide rod (43); the battery installation mechanism (7) includes a U-shaped base (71). The base (71) is located between the two sub-brackets (2) and is fixedly connected to the sub-brackets (2). The top surface of the base (71) is fixedly connected by bolts to a cover plate (72). Two symmetrically arranged battery compartments (73) are provided inside the base (71). The top surfaces of the battery compartments (73) are all of an open structure. Between the two battery compartments (73), two coaxially fixed and screw rods (74) with opposite thread winding directions are provided. On the outer wall of one side of the base (71), a second motor (79) is fixedly connected by bolts. The output shaft of the second motor (79) passes through the outer wall of the base (71) and is coaxially keyed to the screw rod (74). On both of the two screw rods (74), a connecting plate (75) is provided. First hinge seats (76) are installed at the upper and lower ends of the connecting plate (75). On the upper and lower sides between the two connecting plates (75), two symmetrically arranged second hinge seats (77) are provided, and the second hinge seats (77) are respectively fixedly connected to the battery compartments (73) on both sides by bolts. An activity plate (78) is provided between the first hinge seat (76) and the second hinge seat (77). The two ends of the activity plate (78) are respectively hinged to the first hinge seat (76) and the second hinge seat (77).

2. The unmanned vehicle chassis with an adjustment function according to claim 1. It is characterized in that: Threaded columns (11) are installed at both sides of the bottom surface of the main bracket (1), and nuts (12) are threadedly connected to the threaded columns (11); through holes (61) are formed at the four corners of the guard plate (6), the threaded columns (11) pass through the corresponding through holes (61), and the nuts (12) are pressed against the guard plate (6); a vibration sensor (62) is fixedly connected to the top surface of the guard plate (6) by bolts.

3. The unmanned vehicle chassis with an adjustment function according to claim 1, characterized in that: Chute grooves (711) are formed at the bottom surface and both side walls of the base (71), guide rails (731) are fixedly connected to the bottom surface and both side walls of the battery compartment (73) by rivets, and the guide rails (731) are slidably connected to the corresponding chute grooves (711).

4. The unmanned vehicle chassis with an adjustment function according to claim 1, characterized in that: A plurality of heat dissipation grooves (721) are formed on the top surface of the cover plate (72).

5. The unmanned vehicle chassis with an adjustment function according to claim 1, characterized in that: A guard cover (44) is fixedly connected to the top surface of the housing (41) outside the first motor (45) by bolts.

6. The unmanned vehicle chassis with an adjustment function according to claim 1, characterized in that: Two symmetrically arranged connecting blocks (51) are fixedly connected to the bumper (5) by bolts, and the ends of the connecting blocks (51) are fixedly connected to the housing (41) by bolts.

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