Unmanned vehicle frame structure and unmanned vehicle

Abstract

The present invention discloses an unmanned vehicle frame structure, comprising a frame having a hollowed-out center and an open bottom. A bracket is disposed at the opening. The frame is provided with a lifting drive for moving the bracket up and down, and a locking mechanism for locking the bracket. A guide assembly is disposed between the bracket and the frame. The present invention also discloses an unmanned vehicle comprising the aforementioned unmanned vehicle frame. The present invention enables functional cabinets to be raised and lowered on the frame, facilitating loading and unloading of the functional cabinets, lowering the center of gravity of the functional cabinets, and preventing accidental dropping of the functional cabinets.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent vehicles, and in particular to an unmanned vehicle frame structure and an unmanned vehicle. Background Art

[0002] The chassis of existing unmanned vehicles is relatively high, and the functional cabinets they carry (such as express cabinets, financial cabinets, retail cabinets, etc.) are mostly installed on top of the frame by means of bolts, locks, etc., which are relatively high and cannot be adjusted. When loading and unloading functional cabinets, a lot of manpower or the use of auxiliary equipment such as forklifts is required, and the operation must be carried out from the left and right sides or the rear of the unmanned vehicle. It cannot be directly raised or lowered on the frame, which is not convenient. At the same time, due to the high center of gravity of the chassis and functional cabinets, it is not conducive to maintaining the stability of the unmanned vehicle during driving. Although the existing low-floor public transportation vehicles have reduced the height of the floor to a certain extent to facilitate passengers getting on and off the vehicle, the containers still cannot be directly raised or lowered between the ground and the vehicle floor, which is not convenient. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an unmanned vehicle frame structure in which a functional cabinet can be raised and lowered on a vehicle frame, which facilitates the loading and unloading of the functional cabinet, lowers the center of gravity of the functional cabinet, and prevents the functional cabinet from accidentally falling.

[0004] The present invention further provides an unmanned vehicle comprising the above-mentioned frame structure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A frame structure for an unmanned vehicle includes a frame, the middle portion of the frame is hollowed out and the bottom is open, a bracket is provided at the opening, a lifting drive member for driving the bracket to move up and down and a locking mechanism for locking the bracket are provided on the frame, and a guide assembly is provided between the bracket and the frame.

[0007] As a further improvement of the above technical solution:

[0008] The vehicle frame includes a connecting frame and brackets arranged at both ends of the connecting frame, the hollowing and the opening are located between the two brackets, the bracket is located below the connecting frame, and the two brackets are arranged oppositely on both sides of the bracket.

[0009] The lifting drive member and the locking mechanism are both provided on the two brackets, and the guide assembly is provided between the two brackets and the bracket.

[0010] The guide assembly includes two rows of lifting guide rails arranged on the bracket, a guide bracket arranged on the bracket and a rolling element arranged on the guide bracket. The guide bracket is located between the two rows of lifting guide rails, and the rolling element is in rolling cooperation with the lifting guide rails.

[0011] The rolling element includes a first rolling element, a second rolling element and a third rolling element. The first rolling element rolls with the inner side of the lifting guide rail. The lifting guide rail is provided with a guide groove. The second rolling element rolls with one side wall of the guide groove. The third rolling element rolls with the other side wall of the guide groove.

[0012] The locking mechanism includes a mounting base provided on the bracket, a pair of clamping jaws provided on the mounting base, a locking tongue for driving the pair of clamping jaws to open and close, and a locking drive for driving the locking tongue to move up and down. The clamping jaws are hinged to the mounting base, and the locking tongue is located between the pair of clamping jaws and cooperates with the wedge surfaces of the pair of clamping jaws.

[0013] The mounting seat is provided with an elastic plunger, and the clamping jaw is provided with a first locking hole and a second locking hole that match the elastic plunger.

[0014] A proximity switch is provided on the mounting seat, and the locking drive member is connected to a positioning component that cooperates with the proximity switch.

[0015] A linear bearing is provided on the mounting seat, and the lock tongue is passed through the linear bearing.

[0016] The mounting seat is provided with more than two pairs of the clamping jaws, the locking drive member is a motor and the output end is connected to a nut, a screw rod is passed through the nut, and the locking tongues corresponding to each pair of the clamping jaws are connected to the screw rod through a connecting rod.

[0017] A rubber shock absorber is provided between the locking tongue and the connecting rod.

[0018] An unmanned vehicle comprises the unmanned vehicle frame structure described above.

[0019] Compared with the prior art, the advantages of the present invention are: the unmanned vehicle frame structure disclosed in the present invention has a hollow middle part and an open bottom, a bracket is provided at the opening, and the bracket is moved up and down relative to the frame through a lifting drive member, and the bracket is connected to the frame as a whole through a locking mechanism, which is beneficial to improving the connection strength and reliability between the bracket and the frame body, and can prevent the bracket from accidentally falling under the load of the functional cabinet. The guide assembly provides a guiding effect for the lifting and lowering movement of the bracket, making the lifting process more stable and smooth, and with higher movement accuracy. When in use, the functional cabinet is placed on the bracket, which can effectively utilize the space in the hollow part of the frame. When the functional cabinet needs to be loaded and unloaded, since the bottom of the frame is open, the locking mechanism is unlocked, and the lifting drive can drive the functional cabinet down to the ground, which is convenient for subsequent operations, reduces manpower, and does not require the use of auxiliary equipment such as forklifts; at the same time, as the bracket moves up and down, the distance between the bracket and the frame can be adjusted, which can match unmanned vehicles with functional cabinets of different heights; before driving, the lifting drive drives the bracket and the functional cabinet to the set height and separate from the ground, and the locking mechanism locks the bracket and the frame. Since the functional cabinet is located on the lower side of the frame, the center of gravity is lower than that of the functional cabinet arranged above the frame, which is conducive to maintaining the stability of the unmanned vehicle during driving.

[0020] The unmanned vehicle disclosed in the present invention includes the above-mentioned unmanned vehicle frame structure, and thus also has the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the main structure of the bracket of the present invention in the lowered state.

[0023] Figure 3 It is a schematic diagram of the main structure of the bracket of the present invention in the raised state.

[0024] Figure 4 It is a side structural schematic diagram of the present invention.

[0025] Figure 5 It is a three-dimensional enlarged view of the guide assembly in the present invention.

[0026] Figure 6 It is a three-dimensional enlarged view of the locking mechanism in the present invention.

[0027] Figure 7 It is a three-dimensional enlarged view of the mounting base, the locking tongue and the clamping claw in the present invention.

[0028] Figure 8 It is a three-dimensional enlarged view of the clamping jaw in the present invention.

[0029] Figure 9 It is a three-dimensional enlarged view of the lock tongue in the present invention.

[0030] The numbers in the figure represent: 1. frame; 11. bracket; 12. connecting frame; 14. lifting guide rail; 15. guide groove; 2. bracket; 21. guide bracket; 3. lifting drive member; 4. locking mechanism; 40. linear bearing; 41. mounting seat; 42. clamping claw; 43. locking tongue; 44. locking drive member; 441. screw rod; 443. connecting rod; 444. rubber shock absorber; 45. elastic plunger; 46. first locking hole; 47. second locking hole; 48. proximity switch; 49. positioning component; 5. guide assembly; 6. rolling member; 61. first rolling member; 62. second rolling member; 63. third rolling member; 7. wedge surface. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 9 As shown, the frame structure of the unmanned vehicle of this embodiment includes a frame 1, the middle part of the frame 1 is hollow and the bottom is open, a bracket 2 is provided at the opening, a lifting drive member 3 for driving the bracket 2 to move up and down and a locking mechanism 4 for locking the bracket 2 are provided on the frame 1, and a guide assembly 5 is provided between the bracket 2 and the frame 1.

[0033] The frame structure of the unmanned vehicle is characterized in that the middle part of the frame 1 is hollowed out and the bottom is open, and a bracket 2 is provided at the opening. The bracket 2 is moved up and down relative to the frame 1 through a lifting drive member 3. The bracket 2 is connected to the frame 1 as a whole through a locking mechanism 4, which is beneficial to improving the connection strength and reliability between the bracket 2 and the frame 1, and can prevent the bracket 2 from accidentally falling under the load of a functional cabinet (not shown in the figure, such as an express cabinet, a retail cabinet, etc.). The guide component 5 provides a guiding effect for the lifting movement of the bracket 2, making the lifting process more stable and smooth, with higher movement accuracy. During use, the functional cabinet is placed on the bracket 2, which can effectively utilize the space in the hollow part of the frame 1. When the functional cabinet needs to be loaded and unloaded, since the bottom of the frame 1 is open, the locking mechanism 4 is unlocked, and the lifting drive 3 can drive the functional cabinet to the ground, which is convenient for subsequent operations, reduces manpower, and does not require the use of auxiliary equipment such as a forklift. At the same time, as the bracket 2 moves up and down, the distance between the bracket 2 and the frame 1 is adjustable, which can match functional cabinets of different heights. Before driving, the lifting drive 3 drives the bracket 2 and the functional cabinet to rise to a set height and separate from the ground, and the locking mechanism 4 locks the bracket 2 and the frame 1. Since the functional cabinet is located on the lower side of the frame 1, the center of gravity is lower than that of the functional cabinet arranged above the frame 1, which is conducive to maintaining the stability of the unmanned vehicle during driving. Among them, the lifting drive 3 can be used, for example, by a pneumatic cylinder, an oil cylinder, an electric push rod, etc., which can drive the bracket 2 to rise and fall.

[0034] Furthermore, in this embodiment, the vehicle frame 1 includes a connecting frame 12 and brackets 11 disposed at both ends of the connecting frame 12. The hollow portion and opening are located between the two brackets 11. The bracket 2 is located below the connecting frame 12, and the two brackets 11 are arranged on opposite sides of the bracket 2. The connecting frame 12 and the brackets 11 at both ends together form an N-shaped vehicle frame 1. The bracket 2 is arranged between the two brackets 11. The brackets 11 can increase the space between the bracket 2 and the connecting frame 12, thereby accommodating functional cabinets of greater height.

[0035] As a preferred embodiment, both brackets 11 are equipped with a lifting drive 3 and a locking mechanism 4, and a guide assembly 5 is provided between each bracket 11 and the bracket 2. The lifting drive 3, locking mechanism 4, and guide assembly 5 are provided on opposite sides of the bracket 2, thereby improving the force balance and load-bearing capacity of the bracket 2. The bracket 2 also connects and supports the two brackets 11 (the upper sides of the two brackets 11 are connected and supported by the connecting frame 12, and the lower sides are connected and supported by the bracket 2), thus preventing deformation of the frame 1 when driving on twisted roads, especially during acceleration and deceleration, or when loading and unloading functional cabinets.

[0036] Furthermore, in this embodiment, the guide assembly 5 includes two rows of lifting rails 14 provided on the bracket 11, a guide bracket 21 provided on the carriage 2, and a rolling element 6 provided on the guide bracket 21. The rolling element 6 may be, for example, a rolling bearing or a roller, which reduces frictional resistance during movement. The guide bracket 21 is located between the two rows of lifting rails 14. The rolling element 6 and the lifting rails 14 are in rolling engagement with each other. The lifting drive 3 is connected to the guide bracket 21, thereby driving the carriage 2 to move up and down via the guide bracket 21. The cooperation between the rolling element 6 and the lifting rails 14 ensures a smoother and more stable lifting process for the carriage 2, with higher movement precision.

[0037] As a preferred embodiment, the rolling element 6 includes a first rolling element 61, a second rolling element 62 and a third rolling element 63. The first rolling element 61 rolls with the inner side of the lifting guide rail 14 (or the opposite side of the two rows of lifting guide rails 14 on the same bracket 11). The lifting guide rail 14 is provided with a guide groove 15. The second rolling element 62 rolls with one side wall of the guide groove 15, and the third rolling element 63 rolls with the other side wall of the guide groove 15. Figure 2 and Figure 3 By cooperating with the first rolling member 61 and the lifting guide rail 14, the guide bracket 21 and the bracket 2 can be prevented from rocking back and forth relative to the frame 1; by cooperating with the second rolling member 62 and the third rolling member 63 and the guide groove 15, the guide bracket 21 and the bracket 2 can be prevented from rocking left and right relative to the frame 1. The structure is reliable and the movement accuracy is high.

[0038] Furthermore, in this embodiment, the locking mechanism 4 includes a mounting base 41 provided on the bracket 11, a pair of clamping jaws 42 provided on the mounting base 41, a locking tongue 43 for driving the pair of clamping jaws 42 to open and close, and a locking drive 44 for driving the locking tongue 43 to move up and down. The clamping jaws 42 are hinged to the mounting base 41, and the locking tongue 43 is located between the pair of clamping jaws 42 and cooperates with the wedge surfaces 7 of the pair of clamping jaws 42. Because the locking tongue 43 and the pair of clamping jaws 42 cooperate with each other through the wedge surfaces 7, when the locking drive 44 drives the locking tongue 43 to move up and down, the lower ends of the pair of clamping jaws 42 will move closer to or farther away from each other. When moving closer to or closing, they can clamp the guide bracket 21 (specifically, the mounting shaft of the second rolling element 62), that is, locking is achieved. When moving farther away from or opening, the mounting shaft of the second rolling element 62 can separate from the pair of clamping jaws 42, that is, unlocking is achieved. The structure is simple and the locking is reliable.

[0039] Furthermore, in this embodiment, a resilient plunger 45 is provided on the mounting base 41, and a first locking hole 46 and a second locking hole 47 are provided on the clamping jaws 42 to cooperate with the resilient plunger 45. When the resilient plunger 45 is located in the first locking hole 46, the pair of clamping jaws 42 are fully opened. Conversely, when the resilient plunger 45 is located in the second locking hole 47, the pair of clamping jaws 42 are fully closed. This simple and reliable structure prevents damage to the pair of clamping jaws 42 caused by excessive opening or closing.

[0040] Furthermore, in this embodiment, a proximity switch 48 is provided on the mounting base 41, and the locking driver 44 is connected to a positioning member 49 that cooperates with the proximity switch 48. When the locking driver 44 drives the lock tongue 43 to move up and down, the positioning member 49 also moves synchronously. When the proximity switch 48 detects the positioning member 49, it indicates that the lock tongue 43 has moved into place, and the locking driver 44 stops operating. This structure is simple, reliable, and highly automated.

[0041] As a preferred embodiment, a linear bearing 40 is provided on the mounting seat 41, and the lock tongue 43 is passed through the linear bearing 40. The linear bearing 40 is used to provide a guide for the up and down movement of the lock tongue 43 to prevent the lock tongue 43 from deflecting.

[0042] As a preferred embodiment, the mounting seat 41 is provided with two or more pairs of clamping jaws 42, so that both ends of the mounting shaft of the second rolling element 62 can be clamped, the force balance is better, and the load-bearing capacity of the bracket 2 is thereby increased. The locking drive member 44 is a motor and a nut (not shown in the figure) is connected to the output end. A screw rod 441 is passed through the nut, and the locking tongues 43 corresponding to each pair of clamping jaws 42 are respectively connected to the screw rod 441 through a connecting rod 443. During operation, the motor rotates, driving the nut to rotate, and the screw rod 441 passed through the nut moves, and the screw rod 441 then drives the locking tongues 43 to move synchronously through the connecting rods 443, thereby achieving the synchronous opening or closing of each pair of clamping jaws 42.

[0043] As a preferred embodiment, a rubber shock absorber 444 is provided between the lock tongue 43 and the connecting rod 443. The provision of the rubber shock absorber 444 can, on the one hand, achieve a flexible connection, facilitate the assembly of each lock tongue 43, and eliminate errors during the processing and assembly process. On the other hand, it can prevent vibrations during the operation of the unmanned vehicle from being transmitted through the connecting rod 443 to the screw rod 441 and the motor, thereby avoiding damage.

[0044] The unmanned vehicle of this embodiment includes the unmanned vehicle frame structure described above.

[0045] The unmanned vehicle includes the above-mentioned unmanned vehicle frame structure and thus also has the above-mentioned advantages.

[0046] The method of the present invention for the unmanned vehicle to get on and off the functional cabinet is as follows:

[0047] 1) The locking mechanism 4 is unlocked: the locking drive member 44 rotates, driving the nut to rotate, causing the screw rod 441 passing through the nut to move downward, which in turn drives the locking tongues 43 to move downward synchronously through the connecting rods 443, causing the pairs of jaws 42 to open synchronously;

[0048] 2) The bracket 2 descends: the lifting drive 3 drives the guide bracket 21 and the bracket 2 to descend until the bracket 2 descends to the ground;

[0049] 3) Install the functional cabinet onto the bracket 2, or remove the functional cabinet from the bracket 2;

[0050] 4) The bracket 2 rises: the lifting drive 3 drives the guide bracket 21 and the bracket 2 to rise to the set height;

[0051] 5) The locking mechanism 4 is locked: the locking drive 44 rotates in the opposite direction, driving the nut to rotate in the opposite direction, and the screw rod 441 passed through the nut moves upward, and the screw rod 441 then drives the locking tongues 43 to move upward synchronously through the connecting rods 443, and the pairs of jaws 42 close synchronously. When the proximity switch 48 detects the positioning component 49, it indicates that the locking tongue 43 has moved into place, the locking drive 44 stops moving, and the pairs of jaws 42 clamp and fix the mounting shaft of the second rolling element 62.

[0052] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. An unmanned vehicle frame structure, comprising a frame (1), characterized in that: The vehicle frame (1) is hollowed out in the middle and open at the bottom, a bracket (2) is provided at the opening, a functional cabinet is provided on the bracket (2), a lifting drive member (3) for driving the bracket (2) to move up and down and a locking mechanism (4) for locking the bracket (2) are provided on the vehicle frame (1), and a guide assembly (5) is provided between the bracket (2) and the vehicle frame (1); the vehicle frame (1) includes a connecting frame (12) and brackets (11) provided at both ends of the connecting frame (12), the hollowing out and the opening are located between the two brackets (11), the bracket (2) is located below the connecting frame (12), and the two brackets (11) are arranged relative to the bracket (2). On both sides; the two brackets (11) are provided with the lifting drive member (3) and the locking mechanism (4), and the guide assembly (5) is provided between the two brackets (11) and the bracket (2); the locking mechanism (4) includes a mounting seat (41) provided on the bracket (11), a pair of clamping claws (42) provided on the mounting seat (41), a locking tongue (43) for driving the pair of clamping claws (42) to open and close, and a locking drive member (44) for driving the locking tongue (43) to move up and down, the clamping claws (42) are hinged to the mounting seat (41), and the locking tongue (43) is located between the pair of clamping claws (42) and cooperates with the wedge surface (7) of the pair of clamping claws (42).

2. The unmanned vehicle frame structure according to claim 1, characterized in that: The guide assembly (5) comprises two rows of lifting guide rails (14) arranged on the bracket (11), a guide bracket (21) arranged on the bracket (2), and a rolling element (6) arranged on the guide bracket (21); the guide bracket (21) is located between the two rows of lifting guide rails (14); and the rolling element (6) is in rolling engagement with the lifting guide rail (14).

3. The unmanned vehicle frame structure according to claim 2, characterized in that: The rolling member (6) includes a first rolling member (61), a second rolling member (62) and a third rolling member (63), wherein the first rolling member (61) is in rolling engagement with the inner side of the lifting guide rail (14), and a guide groove (15) is provided on the lifting guide rail (14), the second rolling member (62) is in rolling engagement with one side wall of the guide groove (15), and the third rolling member (63) is in rolling engagement with the other side wall of the guide groove (15).

4. The unmanned vehicle frame structure according to claim 1, characterized in that: An elastic plunger (45) is provided on the mounting seat (41), and a first locking hole (46) and a second locking hole (47) that cooperate with the elastic plunger (45) are provided on the clamping jaw (42).

5. The unmanned vehicle frame structure according to claim 1, characterized in that: A proximity switch (48) is provided on the mounting seat (41), and the locking drive member (44) is connected to a positioning member (49) that cooperates with the proximity switch (48).

6. The unmanned vehicle frame structure according to claim 1, characterized in that: A linear bearing (40) is provided on the mounting seat (41), and the locking tongue (43) is inserted into the linear bearing (40).

7. The unmanned vehicle frame structure according to claim 1, characterized in that: The mounting seat (41) is provided with two or more pairs of the clamping jaws (42), the locking drive member (44) is a motor and a nut is connected to the output end, a screw rod (441) is passed through the nut, and the locking tongues (43) corresponding to each pair of the clamping jaws (42) are respectively connected to the screw rod (441) through a connecting rod (443).

8. The unmanned vehicle frame structure according to claim 7, characterized in that: A rubber shock absorber (444) is provided between the locking tongue (43) and the connecting rod (443).

9. An unmanned vehicle, characterized in that: The unmanned vehicle frame structure comprises the frame structure of any one of claims 1 to 8.

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