CN110949567A

CN110949567A - AGV Chassis

Info

Publication number: CN110949567A
Application number: CN201911349689.8A
Authority: CN
Inventors: 梁健斌; 刘珏铭; 林鸿斌
Original assignee: Guangdong Bozhilin Robot Co Ltd
Current assignee: Guangdong Bozhilin Robot Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-04-03

Abstract

The application relates to an AGV chassis belongs to AGV technical field. The AGV comprises an AGV chassis, a front chassis and a rear chassis, wherein the AGV chassis comprises a vehicle body fixing component, a vehicle body moving component, a first steering wheel and a second steering wheel; the AGV comprises an AGV body, a first steering wheel, a second steering wheel, a vehicle body moving assembly, a vehicle body fixing assembly, a first steering wheel, a second steering wheel, a vehicle body moving assembly, a second steering wheel, a vehicle body fixing assembly and a vehicle body fixing assembly. This AGV chassis can realize the extension or the shortening on chassis, is applicable to the operation in the narrow space, and the extension or shorten the regulation flexibility.

Description

AGV Chassis

Technical Field

The application relates to the technical field of AGV, in particular to an AGV chassis.

Background

An existing AGV (automatic Guided Vehicle) chassis cannot adapt to operation in a narrow space, steering or moving is easy to interfere, and operation efficiency is affected.

Disclosure of Invention

The utility model provides an aim at to provide an AGV chassis, can realize the extension or the shortening on chassis, be applicable to operation in the narrow space, the extension or shorten to adjust in a flexible way.

According to one aspect of the application, the AGV chassis comprises a vehicle body fixing component, a vehicle body moving component, a first steering wheel and a second steering wheel;

the AGV comprises an AGV body, a first steering wheel, a second steering wheel, a vehicle body moving assembly, a vehicle body fixing assembly, a first steering wheel, a second steering wheel, a vehicle body moving assembly, a second steering wheel, a vehicle body fixing assembly and a vehicle body fixing assembly.

According to the AGV chassis, the vehicle body moving assembly faces or deviates from the vehicle body fixing assembly through the first steering wheel brake and the second steering wheel drive, so that the overall length of the AGV chassis is changed, and the AGV chassis is suitable for operation in a narrow space; in addition, the overall length of the AGV chassis can be adjusted through the driving of the steering wheels without external force, so that the cost is saved, and the adjustment is flexible.

In addition, the AGV chassis according to the embodiment of the present application has the following additional technical features:

according to some embodiments of the present application, the AGV chassis further includes a first driven wheel mounted to the body securing assembly and a second driven wheel mounted to the body moving assembly.

In the above embodiment, the first driven wheel and the second driven wheel are matched with the first steering wheel and the second steering wheel, so that the support for the vehicle body fixing component and the vehicle body moving component is realized.

In some embodiments of the present application, the first steering wheel, the second steering wheel, the first driven wheel and the second driven wheel are distributed at four corners of the AGV chassis, the first steering wheel and the second steering wheel are arranged diagonally, and the first driven wheel and the second driven wheel are arranged diagonally.

In the above embodiment, the first steering wheel, the second steering wheel, the first driven wheel and the second driven wheel are arranged in a manner that the driving of the AGV chassis is facilitated, and the moving and steering stability of the AGV chassis is ensured.

In some embodiments of the present application, the vehicle body moving assembly includes an expansion bracket and two slide rails, the two slide rails are located at two sides of the expansion bracket, and the two slide rails are arranged in parallel;

the automobile body fixing assembly comprises a frame and two sets of sliding blocks, the two sets of sliding blocks are installed on the two sides of the frame, the two sets of sliding blocks correspond to the two sliding rails one to one, and each set of sliding blocks is in sliding fit with the corresponding sliding rails.

In the above embodiment, the slide block is in sliding fit with the slide rail, so that the relative movement stability of the vehicle body moving assembly and the vehicle body fixing assembly is ensured.

In some embodiments of this application, the automobile body removes subassembly still includes the suspension board, and the suspension board extends perpendicular to the flexible direction of AGV chassis, and the middle part and the expansion bracket of suspension board are articulated, and the both ends of suspension board are connected with the expansion bracket through bumper shock absorber respectively, and the second helm and the second are followed the driving wheel and are installed in the suspension board.

In the above embodiment, through hanger plate and bumper shock absorber, realize the shock attenuation on AGV chassis, can make the wheel under the chassis land simultaneously, increase the stability on AGV chassis, do benefit to the improvement and hinder the success rate more.

In some embodiments of the present application, the telescopic frame is U-shaped, the telescopic frame includes a first side frame body, a second side frame body and a middle frame body, the first side frame body and the second side frame body are disposed oppositely, the middle frame body connects the first side frame body and the second side frame body, two slide rails are respectively disposed on the first side frame body and the second side frame body, a plurality of pairs of cam followers are disposed on the suspension frame plate, and each pair of cam followers is used for clamping the middle frame body.

In the above embodiment, the cam follower realizes flexible and stable movement of the suspension plate with respect to the intermediate frame body.

According to some embodiments of the present application, the body mover assembly has a first operative position corresponding to an extended condition of the AGV chassis and a second operative position corresponding to a shortened condition of the AGV chassis, the AGV chassis further including a locking mechanism for locking the body mover assembly in either the first operative position or the second operative position.

In the above embodiment, the locking mechanism can lock the vehicle body moving component to ensure that the vehicle body moving component cannot move relative to the vehicle body fixing component when the vehicle body moving component is in the first working position and the second working position.

In some embodiments of the present application, the locking mechanism includes an electromagnetic drive device mounted to the vehicle body securing assembly and a limit pin driven by the electromagnetic drive device.

In the embodiment, the limit pin and the electromagnetic driving device are used for locking or unlocking the limit pin, so that the vehicle body moving assembly is stable in locking and flexible in unlocking relative to the vehicle body fixing assembly.

In some embodiments of the present application, a first limiting block and a second limiting block are disposed on the vehicle body moving assembly, each limiting block is provided with a guiding inclined plane and a limiting groove, and the guiding inclined plane is used for guiding the limiting pin to fall into the limiting groove;

when the AGV chassis is in an extending state, the limiting pin falls into the limiting groove on the first limiting block;

when the AGV chassis is in the state of shortening, the spacer pin falls into the spacing inslot on the second stopper.

In the above embodiment, the guide surface guides the stopper pin, thereby facilitating the fitting of the stopper pin with the stopper groove.

In some embodiments of the present application, the AGV chassis further includes a hydraulic leg, one end of the hydraulic leg is connected to the vehicle body fixing assembly, and the other end of the hydraulic leg is provided with a support non-slip mat.

In the embodiment, the AGV chassis is ensured to be integrally and stably parked when the AGV chassis works in a static state through the hydraulic support legs.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic diagram of an AGV chassis according to an embodiment of the present application;

FIG. 2 is an exploded view of an AGV chassis provided in accordance with embodiments of the present application;

FIG. 3 is a schematic illustration of an extended and a shortened AGV chassis according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a body mount assembly for an AGV chassis according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a body travel assembly for an AGV chassis according to an embodiment of the present application;

FIG. 6 is a bottom view of the body mount assembly of the AGV chassis provided in accordance with an embodiment of the present application.

Icon: 100-an AGV chassis; 10-a body securing assembly; 11-a frame; 12-a slide block; 13-guide sleeve; 20-a body moving assembly; 21-a telescopic frame; 211-a first side frame; 212-second side frame body; 213-middle frame body; 22-a slide rail; 23-a first stopper; 24-a second stopper; 25-a guide slope; 26-a limit groove; 27-a buffer; 31-a first steering wheel; 32-a second steering wheel; 33-a first driven wheel; 34-a second driven wheel; 40-a suspension plate; 41-a shock absorber; 42-a cam follower; 50-a locking mechanism; 51-an electromagnetic drive; 52-a limit pin; 53-bearing wheel; 60-hydraulic support legs; 61-a hydraulic cylinder; 62-a guide post; 63-a support; 631-first section; 632-a second section; 633-third section; 64-supporting the non-slip mat; and 7-obstacle avoidance radar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

An AGV chassis 100 according to an embodiment of an aspect of the present application is described below with reference to the figures.

As shown in FIGS. 1 and 2, an AGV chassis 100 according to an embodiment of the present application includes: the vehicle body fixing assembly 10, the vehicle body moving assembly 20, the first steering wheel 31 and the second steering wheel 32.

Specifically, the body mount assembly 10 is used to carry other components; the vehicle body moving assembly 20 is connected with the vehicle body fixing assembly 10 and can move relative to the vehicle body fixing assembly 10; the first steering wheel 31 is mounted to the body fixing unit 10, and the second steering wheel 32 is mounted to the body moving unit 20. When the first steering wheel 31 locks the brake and the second steering wheel 32 drives, the second steering wheel 32 can drive the body moving assembly 20 to move towards or away from the body fixing assembly 10, so as to shorten or lengthen the AGV chassis 100, as shown in fig. 3.

It should be noted that the vehicle body fixing component 10 and the vehicle body moving component 20 are correspondingly arranged, the vehicle body fixing component 10 refers to a component which is fixed in position when the AGV chassis 100 extends or shortens, and the vehicle body moving component 20 refers to a component which changes in position when the AGV chassis 100 extends or shortens.

According to the AGV chassis 100 provided by the embodiment of the application, the first steering wheel 31 and the second steering wheel 32 are matched to realize steering and moving of the AGV chassis 100, when the first steering wheel 31 locks a brake and the second steering wheel 32 drives, the second steering wheel 32 can drive the vehicle body moving assembly 20 to move towards the vehicle body fixing assembly 10, so that the AGV chassis 100 is shortened, and flexible moving in a narrow space is facilitated; or the second steering wheel 32 can drive the car body moving assembly 20 to move away from the car body fixing assembly 10 so as to extend the AGV chassis 100, so that the AGV chassis 100 can conveniently bear transported articles, and the moving stability of the whole car during carrying is improved. The adjustment of the overall length of the AGV chassis 100 can be achieved through the driving of the second steering wheel 32 without external force driving, the cost is saved, and the adjustment is flexible.

The structural features and connections of the various components of the AGV chassis 100 according to embodiments of the present application are described below with reference to the accompanying drawings.

As shown in fig. 2, the second steering wheel 32 and the first steering wheel 31 are respectively located at the front end and the rear end of the AGV chassis 100, the second steering wheel 32 is mounted on the body moving assembly 20, and the first steering wheel 31 is mounted on the body fixing assembly 10.

As shown in fig. 4, the vehicle body fixing assembly 10 includes a vehicle frame 11 and two sets of sliders 12, the two sets of sliders 12 being mounted on left and right sides of the vehicle frame 11; as shown in fig. 5, the vehicle body moving assembly 20 includes an expansion bracket 21 and two slide rails 22, the two slide rails 22 are located on the left and right sides of the expansion bracket 21, the two slide rails 22 are arranged in parallel, and each slide rail 22 extends in the front-rear direction. Each set of sliders 12 is slidably engaged with a corresponding slide rail 22, and the vehicle body moving assembly 20 can move in the front-rear direction relative to the vehicle body fixing assembly 10. The body moving assembly 20 cooperates with the body securing assembly 10 to form the body of the AGV chassis 100, i.e., the body as referred to in this application.

Note that the fore-aft direction refers to the direction of extension or retraction of the AGV chassis 100; the left-right direction refers to a direction perpendicular to the direction of expansion and contraction of the AGV chassis 100.

As an optional mode of the present application, each set of sliding blocks 12 includes two sliding blocks 12 arranged in front and at the back, and the two sliding blocks 12 are located at the outer side of the vehicle frame 11, so as to facilitate the matching with the sliding rails 22 of the vehicle body moving assembly 20, and ensure that the vehicle body moving assembly 20 moves stably when the vehicle body moving assembly 20 moves relative to the vehicle body fixing assembly 10. In other embodiments of the present application, each set of sliders 12 may further include a plurality of sliders 12, and the plurality of sliders 12 are distributed along the front-rear direction to achieve stable support of the vehicle body moving assembly 20 during the front-rear movement.

As shown in FIG. 2, the AGV chassis 100 also includes a first driven pulley 33 and a second driven pulley 34, with the first driven pulley 33 mounted to the body securing assembly 10 and the second driven pulley 34 mounted to the body moving assembly 20. The specific setting mode is as follows: the first steering wheel 31, the second steering wheel 32, the first driven wheel 33 and the second driven wheel 34 are distributed at four corners of the AGV chassis 100, the first steering wheel 31 and the second steering wheel 32 are arranged diagonally, and the first driven wheel 33 and the second driven wheel 34 are arranged diagonally. The arrangement mode facilitates driving of the AGV chassis 100, so that steering and moving stability of the AGV chassis 100 are guaranteed.

As an alternative to the present application, the first driven wheel 33 and the second driven wheel 34 are both shock-absorbing driven wheels, providing a shock-absorbing function.

As shown in fig. 5, the vehicle body moving assembly 20 further includes a suspension plate 40, the suspension plate 40 extends perpendicular to the extending and retracting direction of the AGV chassis 100 (i.e. extends in the left-right direction), the middle portion of the suspension plate 40 is hinged to the telescopic frame 21, both ends of the suspension plate 40 are respectively connected to the telescopic frame 21 through a shock absorber 41, and the second steering wheel 32 and the second driven wheel 34 are mounted on the suspension plate 40.

The shock absorption function of the AGV chassis 100 makes the bottom four wheels (the first steering wheel 31, the second steering wheel 32, the first driven wheel 33 and the second driven wheel 34) touch the ground simultaneously, so that the stability of the vehicle body is increased; through the arrangement of the suspension plate 40 and the shock absorber 41, the whole vehicle shaking caused when the suspension plate 40 self-adapts the vehicle wheels according to the ground flatness can be reduced.

As shown in fig. 5, the telescopic frame 21 is U-shaped, the telescopic frame 21 includes a first side frame body 211, a second side frame body 212 and a middle frame body 213, the first side frame body 211 and the second side frame body 212 are oppositely disposed, and two ends of the middle frame body 213 are respectively connected to the first side frame body 211 and the second side frame body 212; the two slide rails 22 are respectively disposed on the first side frame body 211 and the second side frame body 212, and a plurality of pairs of cam followers 42 are disposed on the suspension board 40, each pair of cam followers 42 is disposed along the front-rear direction, and each pair of cam followers 42 is used for clamping the middle frame body 213. When the second steering wheel 32 and the second driven wheel 34 travel on an uneven ground, the suspension plate 40 swings relative to the intermediate frame body 213 by the shock absorber 41, and the cam follower 42 moves on the intermediate frame body 213 following the movement of the suspension plate 40. The cam followers 42 are provided to allow the suspension plate 40 to move flexibly and stably with respect to the intermediate frame body 213.

According to some embodiments of the present application, the body mover assembly 20 has a first actuating position and a second operating position, the first operating position corresponding to an extended AGV chassis 100 and the second operating position corresponding to a shortened AGV chassis 100; the AGV chassis 100 further includes a locking mechanism 50, the locking mechanism 50 is used to lock the body moving assembly 20 in the first or second operating position to ensure that the body moving assembly 20 is relatively fixed in position, i.e., the body moving assembly 20 cannot move relative to the body fixing assembly 10 in the first or second operating position.

As shown in fig. 2 and 4, the locking mechanism 50 includes an electromagnetic driving device 51 and a limit pin 52, the electromagnetic driving device 51 (an electromagnet is used in the present application) is mounted on the vehicle body fixing component 10, the limit pin 52 is connected to the electromagnetic driving device 51, and the electromagnetic driving device 51 is configured to drive the limit pin 52 to move, so that the limit pin 52 locks the vehicle body moving component 20. The electromagnetic driving device 51 drives the limit pin 52, so that the vehicle body moving assembly 20 is locked stably and unlocked flexibly relative to the vehicle body fixing assembly 10.

As shown in fig. 5, the vehicle body moving assembly 20 is provided with a first stopper 23 and a second stopper 24, each stopper is provided with a guide inclined surface 25 and a stopper groove 26, and the guide inclined surface 25 is used for guiding the stopper pin 52 to fall into the stopper groove 26. The limiting pin 52 is arranged along the up-down direction, the limiting pin 52 is located above the limiting block, and the bearing wheel 53 is arranged at the bottom of the limiting pin 52, so that the limiting pin 52 can move on the limiting block conveniently. When the AGV chassis 100 is in an extended state, the limit pin 52 falls into the limit groove 26 on the first limit block 23, so as to lock the vehicle body moving assembly 20; when the AGV chassis 100 is in the shortened state, the limiting pin 52 falls into the limiting groove 26 on the second limiting block 24, so as to lock the vehicle body moving assembly 20. When the length of the AGV chassis 100 needs to be adjusted, the electromagnetic driving device 51 drives the limiting pin 52 to move upward and disengage from the limiting groove 26, the vehicle body moving assembly 20 moves toward the preset position (the first working position or the second working position), the bearing wheel 53 of the limiting pin 52 contacts the guide surface and then moves along the guide surface and falls into the limiting groove 26, and the electromagnetic driving device 51 drives the limiting pin 52 to be located in the limiting groove 26, so that the vehicle body moving assembly 20 is locked.

It should be noted that, in order to ensure that the locking of the vehicle body moving assembly 20 is stable, the first limiting block 23 and the second limiting block 24 are both provided with two, the two first limiting blocks 23 are distributed on the first side frame body 211 and the second side frame body 212, the two second limiting blocks 24 are distributed on the first side frame body 211 and the second side frame body 212, correspondingly, the two locking mechanisms 50 are also provided, and the two locking mechanisms 50 are distributed on the left side and the right side of the vehicle frame 11.

In some embodiments of the present application, as shown in FIGS. 2 and 4, the AGV chassis 100 further comprises hydraulic legs 60, one end of the hydraulic legs 60 is connected to the body securing assembly 10, and the other end of the hydraulic legs 60 is provided with a support skid 64. When the AGV chassis 100 is operating in a stationary state, the hydraulic legs 60 support the ground, so that the AGV chassis 100 is parked stably as a whole and does not move. Hydraulic leg 60 includes pneumatic cylinder 61, guide post 62 and support piece 63, pneumatic cylinder 61 installs on frame 11, support piece 63 links to each other with the piston rod of pneumatic cylinder 61, guide post 62 sets up on support piece 63, be provided with guide pin bushing 13 on the frame 11, guide post 62 wears to locate in guide pin bushing 13, support slipmat 64 installs in support piece 63's bottom, stretch out through the piston rod of pneumatic cylinder 61 and drive support piece 63 downstream to make support piece 63 realize the support to AGV chassis 100. As the AGV chassis 100 moves, the piston rods of the hydraulic cylinders 61 retract to bring the supports 63 away from the ground.

As an optional manner of this application, as shown in fig. 6, the supporting member 63 includes a first segment 631, a second segment 632, and a third segment 633, two ends of the second segment 632 are respectively connected to the first segment 631 and the third segment 633, the first segment 631 and the third segment 633 are located at two sides of the second segment 632, an included angle is formed between the first segment 631 and the second segment 632, an included angle is formed between the third segment 633 and the second segment 632, and the supporting anti-skid pad 64 is disposed on the first segment 631 and the third segment 633. The guide post 62 is disposed on the first section 631, and the piston rod of the hydraulic cylinder 61 is connected to an end of the second section 632 remote from the first section 631. The structural design of the supporting member 63 facilitates the realization of the support of the ground, and ensures the stability of the support of the AGV chassis 100.

In some alternative embodiments of the present application, as shown in fig. 5, the buffer 27 is disposed at an end of at least one of the first side frame body 211 and the second side frame body 212 of the telescopic frame 21, and the buffer 27 is disposed toward the vehicle body fixing assembly 10, so that when the AGV chassis 100 is shortened, the buffer 27 can reduce the acting force toward the vehicle body fixing assembly 10, and reduce the impact on the vehicle body fixing assembly 10. In addition, in other embodiments of the present application, the buffer 27 may also be disposed on the frame 11, or the buffer 27 may be disposed on the expansion bracket 21 and the frame 11, and different disposition manners may be selected according to different usage environments.

In some alternative embodiments of the present application, as shown in fig. 2, the AGV chassis 100 further includes two obstacle avoidance radars 7, the two obstacle avoidance radars 7 are respectively disposed on the vehicle body fixing component 10 and the vehicle body moving component 20, and the obstacle avoidance radar 7 is disposed adjacent to the driven wheel (the first driven wheel 33 or the second driven wheel 34) for convenience of installation and steering. The obstacle avoidance radar 7 can judge whether an obstacle exists through the laser scanning area. The obstacle avoidance radar 7 is an existing component, and will not be described in detail in this application.

According to some embodiments of the present application, the AGV chassis 100 also includes a battery assembly (not shown) mounted to the frame 11 for providing electrical power to the electrical components.

As an implementation scene of this application, this AGV chassis 100 is used for transporting the wallboard, indoor passageway is narrow and small, because wallboard itself is bulky, for guaranteeing complete machine (AGV chassis 100) stability, the wheel track can be great (also AGV chassis 100 extension), but install behind the wallboard, indoor space that can pass through can reduce greatly, the trafficability characteristic is difficult to guarantee to longer automobile body, this AGV chassis 100 adjusts complete machine length, AGV chassis 100 shortens, thereby adapt to constrictive corridor and interior space.

The operating principle of the AGV chassis 100 according to the embodiment of the present application is:

AGV chassis 100 extension: the first steering wheel 31 locks the brake, the second steering wheel 32 and the second driven wheel 34 swing to be consistent with the extending and retracting direction of the vehicle body, the electromagnetic driving device 51 is powered on to drive the limiting pin 52 to move upwards to be separated from the limiting groove 26 of the second limiting block 24, the second steering wheel 32 drives and provides power in the extending direction, the vehicle body extends, and when the vehicle body moving assembly 20 moves to the first working position, the limiting pin 52 falls into the limiting groove 26 of the first limiting block 23 to lock the vehicle body moving assembly 20.

The AGV chassis 100 is shortened: the first steering wheel 31 locks the brake, the second steering wheel 32 and the second driven wheel 34 swing in accordance with the extending and retracting direction of the vehicle body, the electromagnetic driving device 51 is powered on to drive the limit pin 52 to move upwards to be separated from the limit groove 26 of the first limit block 23, the second steering wheel 32 drives and provides power in the shortening direction to shorten the vehicle body, and when the vehicle body moving assembly 20 moves to the second working position, the limit pin 52 falls into the limit groove 26 of the second limit block 24 to lock the vehicle body moving assembly 20.

The AGV chassis 100 according to the embodiment of the present application has the following beneficial effects:

1. the vehicle body has scalability, when extending: the moving stability of the whole vehicle is improved when the articles are carried, and the front and back inclination is resisted; and (3) shortening: the trafficability of the empty vehicle in the environment with smaller space is improved. 2. The self-contained suspension mechanism (the suspension plate 40 and the shock absorber 41) can adapt to more complex road conditions. 3. The length of the vehicle body can be adjusted without external force through the driving of the steering wheel, so that the cost is saved, and the adjustment is flexible.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An AGV chassis is characterized by comprising a vehicle body fixing component, a vehicle body moving component, a first steering wheel and a second steering wheel;

the automobile body removes the subassembly with fixed subassembly sliding fit of automobile body, first steering wheel install in fixed subassembly of automobile body, the second steering wheel install in the automobile body removes the subassembly, works as first steering wheel brake during the drive of second steering wheel, can drive the automobile body removes the subassembly orientation or deviates from the fixed subassembly of automobile body removes, so that the AGV chassis shortens or extends.

2. The AGV chassis of claim 1, further including a first driven wheel mounted to said body securing assembly and a second driven wheel mounted to said body moving assembly.

3. The AGV chassis of claim 2, wherein said first steerable wheel, said second steerable wheel, said first driven wheel and said second driven wheel are distributed at four corners of said AGV chassis, said first steerable wheel and said second steerable wheel are diagonally positioned, and said first driven wheel and said second driven wheel are diagonally positioned.

4. The AGV chassis of claim 3, wherein the body movement assembly includes an expansion bracket and two slide rails on either side of the expansion bracket, the two slide rails being arranged in parallel;

the automobile body fixing assembly comprises a frame and two sets of sliding blocks, the two sets of sliding blocks are installed on two sides of the frame, the two sets of sliding blocks correspond to the two sliding rails one to one, and each set of sliding blocks is in sliding fit with the corresponding sliding rails.

5. The AGV chassis of claim 4, wherein the body movement assembly further comprises a suspension plate extending perpendicular to a direction of extension and retraction of the AGV chassis, a middle portion of the suspension plate is hinged to the expansion bracket, two ends of the suspension plate are connected to the expansion bracket through a shock absorber, and the second steering wheel and the second driven wheel are mounted to the suspension plate.

6. The AGV chassis of claim 5, wherein the expansion bracket is U-shaped, the expansion bracket comprises a first side bracket body, a second side bracket body and a middle bracket body, the first side bracket body and the second side bracket body are oppositely arranged, the middle bracket body is connected with the first side bracket body and the second side bracket body, the two slide rails are respectively arranged on the first side bracket body and the second side bracket body, a plurality of pairs of cam followers are arranged on the suspension plate, and each pair of cam followers is used for clamping the middle bracket body.

7. The AGV chassis of claim 1, wherein said body travel assembly has a first operative position corresponding to an extended position of said AGV chassis and a second operative position corresponding to a shortened position of said AGV chassis, said AGV chassis further including a locking mechanism for locking said body travel assembly in either said first operative position or said second operative position.

8. The AGV chassis of claim 7, wherein the locking mechanism includes an electromagnetic drive mounted to the body mount assembly and a limit pin driven by the electromagnetic drive.

9. The AGV chassis of claim 8, wherein a first stopper and a second stopper are provided on the body moving assembly, each stopper having a guide slope and a stopper groove, the guide slope being configured to guide the stopper pin to fall into the stopper groove;

when the AGV chassis is in an extended state, the limiting pin falls into the limiting groove on the first limiting block;

10. The AGV chassis of claim 1, further comprising hydraulic legs, one end of said hydraulic legs being connected to said body securing assembly and the other end of said hydraulic legs being provided with a support skid pad.