Unmanned logistics vehicle frame

Abstract

The utility model belongs to the technical field of unmanned driving, and discloses an unmanned logistics vehicle frame which comprises a bearing plate, side rail plates are fixedly installed on the two sides of the top of the bearing plate, a pair of rolling wheels are installed on the upper portions of the side rail plates in a rolling mode, and the inner ends of the rolling wheels are connected with stress plates through bearings; shock absorption seats are fixedly installed at the four ends of the top of the stress plate, insertion rods are installed at the tops of the shock absorption seats in an inserted mode, and when the loading carriage travels to an uphill and downhill road section, the stress plate can roll and move on the arc-shaped grooves through the rollers under the influence of the dead weight of goods in the loading carriage so that the stress plate can be kept horizontal all the time. When the driverless car moves forwards, the rollers can roll towards the front sides of the arc-shaped grooves, namely the advancing direction of the driverless car, so that the stress plate is kept in a balanced state, the loading carriage on the supporting plate is kept horizontal all the time, and goods in the carriage are prevented from being scattered and damaged due to inclination.

Description

Technical Field

[0001] The present application belongs to the field of unmanned driving technology, and specifically relates to an unmanned driving logistics vehicle frame. Background Art

[0002] An unmanned logistics vehicle is a vehicle equipped with an automatic guidance device such as an electromagnetic or optical device, which enables the wheels to move along a specified guidance path. It has unit mobile container equipment for transporting and storing materials, and does not require a driver in logistics applications. Its power source is a rechargeable battery, and its route and behavior can generally be controlled by a computer.

[0003] During the use of unmanned logistics vehicles, since the middle frame and the loading compartment are generally rigidly connected, when the unmanned vehicle passes through uphill or downhill sections, the compartment above the frame will tilt to a certain extent. At this time, if the cargo in the compartment is not fully loaded, it may cause the cargo to scatter, which is extremely detrimental to the fragile items or valuable electronic products in the compartment. Therefore, in order to solve this problem, it is necessary to optimize the design of the frame, and it is necessary to propose an unmanned logistics vehicle frame. Utility Model Content

[0004] The purpose of this application is to provide an unmanned logistics vehicle frame in order to solve the above-mentioned problems.

[0005] The technical solution adopted in this application is as follows: a frame of an unmanned logistics vehicle, including a supporting plate, side rail plates are fixedly installed on both sides of the top of the supporting plate, a pair of rollers are rotatably installed on the upper part of the side rail plates, the inner ends of the rollers are connected to the force-bearing plates through bearings, shock-absorbing seats are fixedly installed on the top four ends of the force-bearing plates, a plug rod is plugged into the top of the shock-absorbing seats, and a support plate is fixedly installed on the top of the plug rod.

[0006] A reduction cylinder is hingedly installed on the left side of the top of the support plate, and a movable rod is plugged into the upper end of the reduction cylinder, and the upper end of the movable rod is hinged to the side wall of the force-bearing plate. The inner cavity of the reduction cylinder is respectively provided with a main cavity and an auxiliary cavity, and an active piston and a passive piston are respectively slidably installed in the main cavity and the auxiliary cavity, and the plug-in end of the movable rod is fixedly connected to the active piston. A partition is fixedly installed at the alternate position between the main cavity and the auxiliary cavity in the reduction cylinder, and two through-tubes are connected through the partition.

[0007] In a preferred embodiment, an arc groove matched with the roller is opened in the upper middle part of the side rail plate, and the roller is rotatably installed in the arc groove.

[0008] In a preferred embodiment, a slot adapted to the insertion rod is provided in the shock-absorbing seat, and the plug-in end at the bottom of the insertion rod is connected to the slot via a shock-absorbing spring.

[0009] In a preferred embodiment, the support plate is connected to the chassis of the driverless car, and the top of the support plate is connected to the loading compartment.

[0010] In a preferred embodiment, a movable groove adapted to the movable rod is provided at the upper end of the reduction cylinder, and the main cavity is located above the auxiliary cavity.

[0011] In a preferred embodiment, the main chamber located below the active piston and the auxiliary chamber located above the passive piston are both filled with hydraulic oil, and the auxiliary chamber located below the passive piston is filled with nitrogen.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. In the present application, through this design, after the loading compartment on the pallet is loaded with goods, once it reaches uphill or downhill sections, the force-bearing plate will roll and move on the arc groove through the rollers under the influence of the downward pressure of the weight of the goods in the loading compartment, so as to always keep the force-bearing plate level. For example, when driving on a downhill section, the rollers will roll toward the front side of the arc groove, that is, the direction in which the unmanned vehicle is moving, so that the force-bearing plate remains in a balanced state, thereby keeping the loading compartment on the pallet always level to prevent the goods in the compartment from being scattered and damaged due to tilting. At the same time, since a shock-absorbing spring is also provided at the bottom plug-in end of the plug rod, this design can also be used to effectively buffer the vibration of the unmanned vehicle when it passes over a road surface similar to a speed bump, thereby achieving the purpose of protecting the goods in the loading compartment.

[0014] 2. In this application, through this design, according to the above-mentioned load-bearing plate, the function of balancing the cargo box can be achieved by rolling the rollers on the arc groove. For example, the load-bearing plate first moves in the forward direction of the support plate. At this time, the load-bearing plate is pressed Figure 2 The direction will drive the movable rod to the left to plug into the reduction cylinder, and then the hydraulic oil in the main chamber will be squeezed into the auxiliary chamber through the active piston. At this time, the hydraulic oil will not be instantly poured into the auxiliary chamber, but slowly discharged into the auxiliary chamber through the pipe on the partition. After the hydraulic oil is discharged into the auxiliary chamber, the passive piston will compress the nitrogen at the lower end of the passive piston to buffer the extrusion force at this time. During this process, the force plate will not move to the left instantly, but slowly move to the left, so that the loading compartment on the top of the pallet will slowly balance, so as to prevent the excessive turning angle from causing the internal goods to be scattered by inertia. On the contrary, when the force plate moves to the right, according to the above introduction, the hydraulic oil in the auxiliary chamber slowly returns to the main chamber, and at this time, the loading compartment on the pallet will also slowly turn to maintain balance, so as to prevent the excessive turning angle from causing the internal goods to be scattered by inertia. At the same time, this design can consume the pulling force of the movable rod back and forth due to the deceleration effect of the partition, thereby effectively reducing the swing times of the compartment on the top of the pallet, and further improving the stability of the goods in the compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the present application from a front view angle;

[0016] Figure 2 This is a schematic diagram of the structure of the present application from a side view;

[0017] Figure 3 This is a schematic diagram of the internal structure of the reduction cylinder in this application.

[0018] Markings in the figure: 1-support plate, 2-side rail plate, 3-roller, 4-arc groove, 5-load plate, 6-shock absorber seat, 7-insertion rod, 8-support plate, 9-reduction cylinder, 10-movable rod, 11-main chamber, 12-auxiliary chamber, 13-active piston, 14-passive piston, 15-partition, 16-through pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] Reference Figure 1 , 2 A frame of an unmanned logistics vehicle comprises a carrier plate 1, side rail plates 2 are fixedly installed on both sides of the top of the carrier plate 1, a pair of rollers 3 are rotatably installed on the upper part of the side rail plates 2, an arc groove 4 adapted to the roller 3 is opened in the middle and upper part of the side rail plates 2, and the roller 3 is rotatably installed in the arc groove 4, the inner end of the roller 3 is connected with a force plate 5 through a bearing, a shock absorbing seat 6 is fixedly installed on the four ends of the top of the force plate 5, a plug rod 7 is plugged and installed on the top of the shock absorbing seat 6, a slot adapted to the plug rod 7 is opened in the shock absorbing seat 6, the plug-in end at the bottom of the plug rod 7 is connected to the slot through a shock absorbing spring, a support plate 8 is fixedly installed on the top of the plug rod 7, the carrier plate 1 is connected to the chassis of the unmanned vehicle, and the top of the support plate 8 is connected to the loading compartment.

[0021] Through the above design, after the loading compartment on the pallet 8 is loaded with goods, once it reaches the uphill or downhill section, the force-bearing plate 5 will roll and move on the arc groove 4 through the roller 3 under the influence of the downward pressure of the weight of the goods in the loading compartment, so as to always keep the force-bearing plate 5 level. For example, when traveling on a downhill section, the roller 3 will roll toward the front side of the arc groove 4, that is, the direction of the unmanned vehicle's advance, so that the force-bearing plate 5 maintains a balanced state, thereby keeping the loading compartment on the pallet 8 always level to prevent the goods in the compartment from being scattered and damaged due to tilting. At the same time, since a shock-absorbing spring is also provided at the bottom plug-in end of the insertion rod 7, this design can also be used to effectively buffer the vibration of the unmanned vehicle when it passes over a road surface similar to a speed bump, thereby achieving the purpose of protecting the goods in the loading compartment.

[0022] Reference Figure 1 , 2 3. A reduction cylinder 9 is hingedly installed on the left side of the top of the carrier plate 1. A movable rod 10 is inserted and installed on the upper end of the reduction cylinder 9. The upper end of the movable rod 10 is hinged to the side wall of the force-bearing plate 5. The inner cavity of the reduction cylinder 9 is respectively provided with a main cavity 11 and an auxiliary cavity 12. The upper end of the reduction cylinder 9 is provided with a movable groove adapted to the movable rod 10. The main cavity 11 is located above the auxiliary cavity 12. An active piston 13 and a passive piston 14 are slidably installed in the main cavity 11 and the auxiliary cavity 12, respectively. The plug-in end of the movable rod 10 is fixedly connected to the active piston 13, the main chamber 11 located below the active piston 13 and the auxiliary chamber 12 located above the passive piston 14 are both filled with hydraulic oil, the auxiliary chamber 12 located below the passive piston 14 is filled with nitrogen, and a partition 15 is fixedly installed at the alternate position between the main chamber 11 and the auxiliary chamber 12 in the reduction cylinder 9, and two through-tubes 16 are connected through the partition 15, and the diameter of the through-tube 16 is smaller than the inner diameter of the reduction cylinder 9.

[0023] Through the above design, according to the above-mentioned force plate 5 can balance the function of the cargo box by rolling the roller 3 on the arc groove 4, take the force plate 5 moving toward the forward direction of the support plate 1 as an example, at this time, the force plate 5 is pressed Figure 2 The active rod 10 will be driven to the left to be inserted into the reduction cylinder 9, and then the hydraulic oil in the main chamber 11 will be squeezed into the auxiliary chamber 12 through the active piston 13. At this time, since the diameter of the through-tube 16 is smaller than the inner diameter of the reduction cylinder 9, the hydraulic oil cannot pass through the partition 15 quickly and without resistance. Therefore, the hydraulic oil will not be instantly poured into the auxiliary chamber 12, but slowly discharged into the auxiliary chamber 12 through the through-tube 16 on the partition 15, playing a role in deceleration; when the hydraulic oil is discharged into the auxiliary chamber 12, the passive piston 14 will compress the nitrogen at the lower end of the passive piston 14 to buffer the squeezing force at this time. In this process, the force plate 5 will not move to the left instantly. Instead of moving, it moves slowly to the left, so that the loading compartment on the top of the pallet 8 is slowly balanced to prevent the goods inside from being scattered due to inertia due to excessive turning. On the contrary, when the force-bearing plate 5 moves to the right, according to the above introduction, the hydraulic oil in the auxiliary chamber 12 slowly returns to the main chamber 11. At this time, the loading compartment on the pallet 8 will also be slowly turned to maintain balance to prevent the goods inside from being scattered due to inertia due to excessive turning. At the same time, this design can consume the pulling force of the movable rod 10 back and forth due to the deceleration effect of the partition 15, thereby effectively reducing the swing times of the compartment on the top of the pallet 8 and further improving the stability of the goods in the compartment.

[0024] The implementation principle of the embodiment of the present application is:

[0025] Firstly, after the loading compartment on the pallet 8 is loaded with goods, once it reaches uphill or downhill sections, the force-bearing plate 5 will roll and move on the arc groove 4 through the rollers 3 under the influence of the downward pressure of the weight of the goods in the loading compartment, so as to always keep the force-bearing plate 5 level. For example, when traveling on a downhill section, the rollers 3 will roll toward the front side of the arc groove 4, that is, the direction in which the unmanned vehicle is moving, so that the force-bearing plate 5 remains in a balanced state, thereby keeping the loading compartment on the pallet 8 always level to prevent the goods in the compartment from being scattered and damaged due to tilting. At the same time, since a shock-absorbing spring is also provided at the bottom plug-in end of the insertion rod 7, this design can also be used to effectively buffer the vibration of the unmanned vehicle when it passes over a road surface similar to a speed bump, thereby achieving the purpose of protecting the goods in the loading compartment.

[0026] Furthermore, according to the above-mentioned function of the load-bearing plate 5 to balance the cargo box by rolling the roller 3 on the arc groove 4, taking the load-bearing plate 5 moving toward the forward direction of the support plate 1 as an example, at this time, the load-bearing plate 5 is pressed Figure 2 The active rod 10 will be driven to the left to be plugged into the reduction cylinder 9, and then the hydraulic oil in the main chamber 11 will be squeezed into the auxiliary chamber 12 through the active piston 13. At this time, the hydraulic oil will not be instantly poured into the auxiliary chamber 12, but will be slowly discharged into the auxiliary chamber 12 through the through pipe 16 on the partition 15. When the hydraulic oil is discharged into the auxiliary chamber 12, the passive piston 14 will compress the nitrogen at the lower end of the passive piston 14 to buffer the squeezing force at this time. In this process, the force plate 5 will not move to the left instantly, but will move to the left slowly, so that the loading truck on the top of the pallet 8 The compartment slowly balances down to prevent the goods inside from being scattered due to inertia caused by excessive turning. On the contrary, when the force plate 5 moves to the right, according to the above introduction, the hydraulic oil in the auxiliary chamber 12 slowly returns to the main chamber 11. At this time, the loading compartment on the pallet 8 will also slowly turn to maintain balance to prevent the goods inside from being scattered due to inertia caused by excessive turning. At the same time, this design can consume the pulling force of the movable rod 10 back and forth due to the deceleration effect of the partition 15, thereby effectively reducing the number of swings of the compartment on the top of the pallet 8 and further improving the stability of the goods in the compartment.

[0027] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An unmanned logistics vehicle frame, comprising a support plate (1), characterized in that: Side rail plates (2) are fixedly mounted on both sides of the top of the carrier plate (1); a pair of rollers (3) are rotatably mounted on the upper part of the side rail plates (2); the inner ends of the rollers (3) are connected to a force-bearing plate (5) via bearings; shock-absorbing seats (6) are fixedly mounted on the four ends of the top of the force-bearing plate (5); a plug rod (7) is plugged and mounted on the top of the shock-absorbing seat (6); and a support plate (8) is fixedly mounted on the top of the plug rod (7); A reduction cylinder (9) is hingedly installed on the left side of the top of the support plate (1), and a movable rod (10) is plugged and installed on the upper end of the reduction cylinder (9), and the upper end of the movable rod (10) is hinged to the side wall of the force-bearing plate (5). The inner cavity of the reduction cylinder (9) is respectively provided with a main cavity (11) and an auxiliary cavity (12), and an active piston (13) and a passive piston (14) are slidably installed in the main cavity (11) and the auxiliary cavity (12), respectively, and the plug-in end of the movable rod (10) is fixedly connected to the active piston (13). A partition (15) is fixedly installed at an alternate position between the main cavity (11) and the auxiliary cavity (12) in the reduction cylinder (9), and two through-tubes (16) are connected through the partition (15).

2. The unmanned logistics vehicle frame according to claim 1, characterized in that: An arc groove (4) adapted to the roller (3) is provided at the middle upper portion of the side rail plate (2), and the roller (3) is rotatably mounted in the arc groove (4).

3. The unmanned logistics vehicle frame according to claim 1, characterized in that: A slot adapted to the insertion rod (7) is provided in the shock absorbing seat (6), and the plug-in end at the bottom of the insertion rod (7) is connected to the slot via a shock absorbing spring.

4. The unmanned logistics vehicle frame according to claim 1, characterized in that: The support plate (1) is connected to the chassis of the driverless car, and the top of the support plate (8) is connected to the loading compartment.

5. The unmanned logistics vehicle frame according to claim 1, characterized in that: The upper end of the reduction cylinder (9) is provided with a movable groove adapted to the movable rod (10), and the main cavity (11) is located above the auxiliary cavity (12).

6. The unmanned logistics vehicle frame according to claim 1, characterized in that: The main chamber (11) located below the active piston (13) and the auxiliary chamber (12) located above the passive piston (14) are both filled with hydraulic oil, and the auxiliary chamber (12) located below the passive piston (14) is filled with nitrogen.

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