CN216507776U

CN216507776U - AGV chassis

Info

Publication number: CN216507776U
Application number: CN202122570870.0U
Authority: CN
Inventors: 张玉良; 孙寅虎; 焦庆华; 杨大崇; 田华腾
Original assignee: Henan Muyuan Intelligent Technology Co Ltd
Current assignee: Henan Muyuan Intelligent Technology Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-13
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to the technical field of logistics transportation equipment, in particular to an AGV chassis which comprises a chassis, a fixed support and two suspension supports, wherein the fixed support is arranged on the chassis, the two suspension supports slide up and down relative to the fixed support, and each suspension support is provided with one side of the chassis and is used for fixedly assembling a driving wheel on the side; the suspension support is provided with at least two buffer devices, and the two buffer devices are distributed along the radial direction of the driving wheel and are positioned on two sides of a driving shaft of the driving wheel. When external force acts on the driving wheel from different directions, the acting force is greatly attenuated due to the fact that the buffering devices are arranged in the front direction and the rear direction of the driving wheel, the impact force transmitted to the driving wheel by the uneven road surface is buffered to attenuate the vibration of the AGV body caused by the impact force, the chassis runs stably, and the stability of the AGV body is improved. The shock absorption suspension structure is good in stability and balance, flexible to operate and use, high in universality and suitable for various working occasions.

Description

AGV chassis

Technical Field

The utility model relates to the technical field of logistics transportation equipment, in particular to an AGV chassis.

Background

With the acceleration of the transformation and upgrade pace of the manufacturing industry in China, the trend of mechanical automation to replace manual labor force has become a development trend, and the mechanical automation has become an important item for each high-tech company to compete with each other at present. The logistics and material handling mode is gradually changed from the traditional manual handling mode to the intelligent automatic handling mode, and the AGV is the most widely used handling robot in the domestic manufacturing industry and even in the world. AGVs were originally derived from warehouse logistics, where the application environment conditions were relatively good, and the application sites of AGVs also had relevant standard definitions. Along with the rapid development of intelligent logistics, the AGV now participates in the fields of manufacturing industry, port carrying, security inspection and the like, and the expansion of the application field range means the complexity of an operation scene is improved, so that the adaptability of the AGV is in urgent need of improving the effect. The damping floating structure, one of the adaptive structures of the AGV, is the most important mechanism of the mechanical part of the AGV, and directly determines the performance and stability of the whole machine.

The existing AGV damping floating structure cannot completely transfer force acting between wheels and an AGV chassis, has poor effect of buffering impact force transferred to a frame or an automobile body from an uneven road surface, has poor applicability in different occasions, and cannot meet the use requirements of different scenes; and the damping floating structure is complex, and the installation and later maintenance are troublesome, so that the production cost and the after-sale maintenance cost are high.

Therefore, the technical staff in the field need to solve the problem of how to provide a damping suspension mechanism which can effectively transmit the force acting between the wheels and the frame, buffer the impact force transmitted to the chassis and the vehicle body from the uneven road surface to damp the vibration caused by the impact force and ensure that the AGV can smoothly run.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an AGV chassis.

In order to achieve the purpose, the utility model provides the following technical scheme:

an AGV chassis comprises a chassis, a fixed support arranged on the chassis and two suspension supports sliding up and down relative to the fixed support, wherein each suspension support is provided with one side of the chassis and is used for fixedly assembling a driving wheel at the side; the suspension bracket is at least provided with two buffer devices which are distributed along the radial direction of the driving wheel and are positioned at two sides of the driving shaft of the driving wheel.

Preferably, one end of the fixed support is fixed on the chassis, and the other end of the fixed support is far away from the chassis.

Preferably, the fixed bracket is located in the region between the two drive wheels.

Preferably, a driving motor and a speed reducer are connected to the driving wheel.

Preferably, the fixed bracket and the suspension bracket are assembled in a sliding mode through a sliding rail and sliding block mechanism.

Preferably, shock absorption blocks are arranged at two ends of the sliding rail.

Preferably, the material of the damper block is butyl rubber.

Preferably, the damping device comprises a damping spring, one end of the damping spring is connected with the suspension bracket, and the other end of the damping spring is connected with the chassis or the fixed bracket.

Preferably, a guide post penetrates through the middle of the damping spring, and the guide post is fixedly assembled between the chassis and the fixing support.

Preferably, universal wheels are further arranged on the periphery of the chassis. Compared with the prior art, the utility model has the technical effects that:

the chassis is provided with the fixed support, the suspension support slides up and down relative to the fixed support, the suspension support is provided with two driving mechanisms, each driving mechanism is connected with one driving wheel, a plurality of buffer devices are arranged between the suspension support and the chassis, and particularly the buffer devices are arranged on two sides of each driving wheel. Because the both sides at every drive wheel all are provided with buffer, be equipped with 4 buffer promptly on the chassis, it sets up between suspension support and chassis and makes the relative chassis of suspension support can suspend and cushioning movement, thereby no matter when external force from the place ahead of drive wheel or the not equidirectional action in rear on the drive wheel, this effort all sets up buffer owing to the fore-and-aft direction of drive wheel, thereby make the effort that transmits to the chassis through the drive wheel consequently and attenuate greatly, the impact force that the buffering was passed to the drive wheel by the road surface of unevenness is with the automobile body vibrations that the decay arouses from this, thereby let the chassis go stably, improve AGV automobile body stability. The shock absorption suspension structure is good in stability and balance, flexible to operate and use, high in universality and suitable for various working occasions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an exploded view of the present invention.

Detailed Description

Technical terms or scientific terms used in the present specification should be given their ordinary meanings as understood by those skilled in the art: the use of "first," "second," and the like in this description does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another; the terms "connected" or "communicating" and the like are not restricted to physical or mechanical connections, but may include various forms of connections, whether direct or indirect; "upper", "lower", "left", "right", "front", "rear", "far", "near", "start", "end", and the like are used only to indicate relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may also be changed accordingly; in addition, in the description of the present specification, the meaning of "a plurality" or "several" is two or more unless otherwise specified.

For a better understanding of the present invention, embodiments thereof will be described below with reference to the accompanying drawings.

As shown in fig. 1-2, the shock-absorbing suspension structure for the AGV chassis in this embodiment includes a fixing support 2 disposed on the chassis 1 and a suspension support 3 sliding up and down relative to the fixing support 2, two driving mechanisms 4 are disposed on the suspension support 3, each driving mechanism 4 is connected to one driving wheel 5, universal wheels 6 are disposed around the chassis 1, a plurality of buffering devices 7 are disposed between the suspension support 3 and the chassis 1, and the buffering devices 7 are disposed on two sides of each driving wheel 5.

That is, on the chassis of the present embodiment, one suspension bracket is provided on each side (left-right direction in fig. 1), and each suspension bracket is used for mounting one driving mechanism 4 (the driving mechanism 4 includes a driving wheel 5, a driving motor, and the like). The suspension bracket 3 is assembled on the fixed bracket 2 in a sliding manner, the two sides of the suspension bracket 3 are respectively provided with a buffer device 7, and the buffer devices 7 on the two sides of the suspension bracket 3 are respectively positioned in the radial direction of the driving wheel and positioned on the two sides of the driving shaft of the driving wheel 5. In more detail, the radial direction of the driving wheel 5 is taken as the front and back direction of the trolley, so that the buffer devices 7 on the two sides of the suspension bracket 3 are arranged in tandem and respectively positioned on the two sides of the driving wheel 5.

Based on this, because the buffer device 7 is arranged on both sides of each driving wheel 5, namely 4 buffer devices 7 are arranged on the chassis 1, and the buffer devices 7 are arranged between the suspension bracket 3 and the chassis 1 to enable the suspension bracket 3 to suspend and buffer the motion relative to the chassis 1, so that when external force acts on the driving wheels 5 from different directions in front of or behind the driving wheels 5, the acting force is greatly attenuated due to the front and back directions of the driving wheels 7, the acting force transmitted to the chassis 1 through the driving wheels 5 is greatly attenuated, the chassis 1 runs stably, and the stability of the vehicle body is improved.

In a particular embodiment, the drive mechanism 4 comprises a drive motor and a reducer connected to the drive motor, the reducer being connected to the drive wheel 5.

In fig. 1, a guard plate is arranged above the universal wheel 6, the guard plate can play a role in protection, and in addition, sewage can be prevented from splashing on the chassis 1.

Furthermore, when the chassis 1 needs to be steered, it can be achieved by adjusting the rotation speed of the driving motor of the corresponding driving mechanism 4 of the two driving wheels 5. When in-situ steering is needed, one driving motor controls one driving wheel to rotate forwards, and the other driving motor controls the driving wheel to rotate backwards, so that in-situ steering is realized; when steering is needed during running, the rotating speed of one driving motor is higher than that of the other driving motor, and steering to the side where the driving motor with the low rotating speed is located can be achieved.

In another embodiment, the floating frame 3 is slidably mounted on the fixed frame 2 to be movable up and down along the fixed frame 2. As shown in fig. 2, a slide rail 21 is arranged on the fixed bracket 2, a slide block 31 is arranged on the suspension bracket 3, and the slide block 31 moves up and down along the slide rail 21, wherein the slide rail 21 can be a groove arranged on a rail, and the slide block is positioned in the groove; the slide block 31 may be provided with a groove, and the slide rail 21 may be fitted into the groove of the slide block 31 to form a slide rail-slide block mechanism. The slide rail and slide block mechanism can enable the suspension bracket 3 to move relative to the chassis 1, and buffers the force acting on the chassis 1 when the driving wheel 5 is impacted, thereby increasing the running stability of the chassis 1.

According to what is shown in fig. 1 and 2, the fixed bracket 2 is fixed to the chassis 1 at one end and is far from the chassis 1 at the other end and has a high height. And the driving shaft of the driving wheel 5 is inserted into the fixing bracket 2, and as shown in fig. 2, the fixing bracket 2 is provided with a hole for inserting the driving shaft, so that the up-and-down displacement of the driving wheel 5 is limited by the hole.

The advantage of this design lies in, fixed bolster 2 is higher, and buffer 7 can choose for use stronger spring mechanism, facilitates for the design lectotype. The up-down displacement of the driving wheel 5 can be adjusted by controlling the size of the hole in the fixed support 2, and the driving wheel 5 is prevented from having overlarge displacement to influence the driving safety.

In another embodiment, the highest and lowest parts of the slide rail 21 are provided with shock absorbing blocks (not shown in the drawings), and the shock absorbing blocks are used for reducing the impact of the slide block 31 on the connected slide rail parts when the slide block 31 slides to the highest position and the lowest position of the slide rail 21 relative to the slide rail 21 during the impact on the driving wheel 5 or the chassis 1.

In the above embodiments, the damping block is made of butyl rubber, or a block-shaped object with certain elasticity such as other types of rubber materials.

In a specific embodiment, as shown in fig. 1, the damping device 7 includes a damping spring 71, one end of the damping spring 71 is connected to the suspension bracket 3, and the other end of the damping spring is connected to the chassis 1 or the fixed bracket 2, and since the chassis 1 and the fixed bracket 2 are rigidly connected, the other end of the damping spring is connected to one of the chassis 1 and the fixed bracket 2, that is, the damping spring 71 is disposed between the suspension bracket 2 and the chassis 1.

In the embodiment shown in fig. 2, the fixed bracket 2 takes up a large space between the drive wheels 5 of the chassis 1, which is advantageous for balancing the weight of the entire chassis. The top of the fixed support 2 is also provided with a cover plate which can play a certain role in protecting a driving motor, a speed reducer and the like on the chassis 1.

As shown in fig. 2, a guide post 72 is further provided in the middle of the damper spring 71 so that the damper spring 71 is not radially deformed during compression and extension.

In the above embodiment, the two ends of the guide post 72 are respectively connected to the fixed bracket 2 and the chassis 1, and a spring seat may be disposed on the guide post 72 for keeping the damping spring in a certain compression state, so that a buffering preparation is prepared in advance before the driving wheel 5 is stressed. The two ends of the suspension bracket 3 are provided with guide holes penetrating the guide posts 72. For the suspension bracket 3, the slide rail and slide block mechanism can play a role in guiding, and the guide hole is matched with the guide column 72 and also can play a role in guiding, so that the guiding effect of the suspension bracket 3 is ensured.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.

Claims

1. An AGV chassis, its characterized in that: the suspension device comprises a chassis (1), a fixed support (2) arranged on the chassis (1) and two suspension supports (3) which slide up and down relative to the fixed support (2), wherein each suspension support (3) is arranged on one side of the chassis (1) and is used for fixedly assembling a driving wheel (5) on the side; the suspension bracket (3) is at least provided with two buffer devices (7), and the two buffer devices (7) are distributed along the radial direction of the driving wheel (5) and are positioned at two sides of a driving shaft of the driving wheel (5).

2. An AGV chassis according to claim 1 in which: one end of the fixed support (2) is fixed on the chassis (1), and the other end of the fixed support is far away from the chassis (1).

3. An AGV chassis according to claim 2 in which: the fixed support (2) is located in the area between the two drive wheels (5).

4. An AGV chassis according to claim 1 in which: the driving wheel (5) is connected with a driving motor and a speed reducer.

5. An AGV chassis according to claim 3, wherein: the fixed support (2) and the suspension support (3) are assembled in a sliding mode through a sliding rail and sliding block mechanism.

6. An AGV chassis according to claim 5, wherein: and shock absorption blocks are arranged at two ends of the sliding rail.

7. An AGV chassis according to claim 6, wherein: the damping block is made of butyl rubber.

8. An AGV chassis according to claim 1 in which: the damping device (7) comprises a damping spring (71), one end of the damping spring (71) is connected with the suspension bracket (3), and the other end of the damping spring is connected with the chassis (1) or the fixed bracket (2).

9. An AGV chassis according to claim 8 in which: a guide post (72) penetrates through the middle of the damping spring (71), and the guide post (72) is fixedly assembled between the chassis (1) and the fixed support (2).

10. An AGV chassis according to claim 1 in which: the periphery of the chassis (1) is also provided with universal wheels (6).