CN210082858U - Damping suspension device for AGV - Google Patents

Abstract

The utility model discloses a shock-absorbing suspension device for AGV, which comprises a floating plate, a connecting seat, a shock absorber, a bracket, a driving wheel and a driving device; one end of the floating plate is hinged with the connecting seat through a rotating flange; The bottom end of the shock absorber is fixedly connected to the end of the floating plate away from the connecting seat through the lower connecting rod, and the top end of the shock absorber is fixedly connected to the bracket; the driving wheel is arranged in the middle of the floating plate, and the driving device drives the driving wheel to walk; the axis of the rotating flange plate , The axis of the driving wheel and the axis of the lower connecting rod are triangular on the same vertical plane; the ratio of the distance from the axis of the rotating flange to the axis of the driving wheel and the distance between the axis of the rotating flange and the axis of the lower connecting rod is a:c. The driving wheel and the vehicle body of the utility model are not rigidly fixed, but are connected flexibly through the shock absorber through the floating plate. When the driving wheel encounters uneven road surface during the running process, the elastic deformation of the shock absorber can play a role in Buffer and compensation, keep the car body running smoothly, and realize the shock absorption effect.

Description

A shock-absorbing suspension device for AGV

technical field

The utility model relates to the technical field of AGV trolleys, in particular to a shock absorbing suspension device for AGV.

Background technique

Most of the existing AGV drive wheels use rigid fixed connections and no elastic floating devices. If the ground is uneven, the trolley will be bumpy during operation. The AGV car is prone to insufficient adhesion during the bumpy process, causing the car to derail or deviate from the positioning point. Some use an elastic floating mechanism between the casters and the frame of the trolley, which increases the structural complexity of the AGV trolley and increases its height. Many applications have restrictions on the length, width and height of the AGV body, resulting in unreasonable application.

Utility model content

In order to solve the above-mentioned defects of the prior art, the utility model provides a shock-absorbing suspension device for AGV. The driving wheel and the vehicle body of the utility model are not rigidly fixed, but are flexibly connected by a floating plate through a shock absorber. When the driving wheel encounters the uneven road surface during the driving process, the elastic deformation of the shock absorber can buffer and compensate, keep the vehicle body running smoothly, and realize the shock absorption effect.

In order to achieve the above technical purpose, the utility model adopts the following technical scheme: a shock-absorbing suspension device for AGV, including a floating plate, a connecting seat, a shock absorber, a bracket, a driving wheel, and a driving device;

One end of the floating plate is hinged with the connecting seat through a rotating flange;

The bottom end of the shock absorber is fixedly connected to the end of the floating plate away from the connecting seat through the lower link, and the top end of the shock absorber is fixedly connected to the bracket;

The driving wheel is arranged in the middle of the floating plate, and the driving device drives the driving wheel to walk;

The axis of the rotating flange, the axis of the driving wheel, and the axis of the lower connecting rod are in a triangular shape on the same vertical plane; the distance from the axis of the rotating flange to the axis of the driving wheel is the same as the rotation method. The ratio of the distance between the axis of the flange and the axis of the lower connecting rod is a:c.

Further, the a:c is 1:2.

Further, the shock absorber is provided with a spring and an adjusting nut.

Further, the connection base includes a bottom plate and two vertical plates, and the vertical plates are symmetrically fixed on the bottom plate.

Further, a pin shaft is connected inside the rotating flange, and the pin shaft is fixed on the connecting seat; a wear-resistant sleeve is arranged between the pin shaft and the rotating flange; one end of the pin shaft is also With snap washer and round nut.

Further, the driving device includes a motor and a reducer, and the reducer is drivingly connected to the driving wheel.

Further, the upper end of the bracket is fixedly connected with a connecting groove plate, and the lower end is provided with a connecting plate.

To sum up, the utility model has achieved the following technical effects:

1. The utility model connects the connecting seat and the frame together, the floating plate rotates around the connecting seat, the floating plate acts on the shock absorber, and floats freely up and down to realize the shock absorption effect;

2. The utility model adopts the basic principle of the lever, which converts the ratio of the two distances c and a into the compression amount of the shock absorber. The driving wheel floats up and down when the road surface is uneven, corresponding to the shock absorber. The compression amount is c/a times to achieve the best shock absorption effect of the shock absorber;

3. The shock absorber of the utility model is equipped with an adjustable damping device, that is, an adjustment nut, which can fine-tune the compression amount of the shock absorber during use, so that the impact on the carrying goods and auxiliary tooling can be reduced during the walking process of the AGV, so that the AGV can travel more stable and reliable;

4. The utility model is embedded with non-metallic wear-resistant bushings on the inner wall of the rotating flange, which can effectively reduce frictional resistance, and at the same time utilize the unique properties of non-metallic wear-resistant materials to reduce the physical wear on the guide shaft and achieve maintenance-free humanity. Design advantages of optimized reliability.

Description of drawings

Fig. 1 is the structure exploded diagram that the utility model embodiment provides;

2 is a schematic diagram of the overall structure provided by an embodiment of the present invention;

3 is a side view provided by an embodiment of the present invention;

In the figure, 1, connecting seat, 101, bottom plate, 102, vertical plate, 2, shaft hole, 3, pin shaft, 4, connecting assembly, 401, wear sleeve, 402, rotating flange, 403, stop washer , 404, round nut, 5, floating plate, 6, driving wheel, 7, driving device, 701, motor, 702, reducer, 8, connecting part, 9, shock absorber, 901, lower link, 902, upper Connecting rod, 903, spring, 904, adjusting nut, 10, connecting groove plate, 11, bracket, 12, connecting plate.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading this specification, but as long as the utility model is used in the present invention All new types of claims are protected by the patent law.

Example:

As shown in Figures 1 and 2, this embodiment provides a shock-absorbing suspension device for AGV, including a floating plate 5, a connecting seat 1, a shock absorber 9, a bracket 11, a driving wheel 6, and a driving device 7; wherein , the connecting seat 1, the floating plate 5, the shock absorber 9 and the bracket 11 are connected in sequence, the connecting seat 1 is connected with the frame, and the bracket 11 is connected with the frame.

One end of the floating plate 5 is hinged with the connecting base 1 through the rotating flange 402 , and the floating plate 5 rotates around the connecting base 1 through the rotating flange 402 . In this embodiment, the floating plate 5 is in the shape of an obtuse-angled triangle as a whole, wherein the ends corresponding to the two acute angles are respectively connected to the connecting seat 1 and the shock absorber 9 .

The bottom end of the shock absorber 9 is fixedly connected to the end of the floating plate 5 away from the connecting seat 1 through the lower connecting rod 901, the top end of the shock absorber 9 is fixedly connected to the bracket 11, and the top end of the shock absorber 9 is provided with an upper connecting rod 902, The upper link 902 is fixedly connected to the bracket 11 ; the shock absorber 9 is provided with a spring 903 and an adjusting nut 904 , and the adjusting nut 904 is used to adjust the extension length of the spring 903 . The specific structure of the shock absorber 9 belongs to the prior art and will not be repeated here.

As shown in FIG. 1 , the floating plate 5 and the connecting base 1 are connected by a connecting assembly 4 . The connecting assembly 4 includes a rotating flange 402 . The rotating flange 402 is internally connected with a pin shaft 3 , and the pin shaft 3 is fixed on the connecting base. 1, the end of the floating plate 5 is provided with a hole for the rotating flange 402 to pass through, and the floating plate 5 is rotatably connected with the pin shaft 3 through the rotating flange 402; The wear-resistant sleeve 401 and the wear-resistant sleeve 401 use non-metal wear-resistant bushings, copper sleeves, oil-free bushings, etc.; the other end of the pin shaft 3 is also provided with a stop washer 403 and a round nut 404 .

As shown in FIG. 1 , the driving wheel 6 is arranged in the middle of the floating plate 5 , and the driving device 7 drives the driving wheel 6 to walk. The driving device 7 includes a motor 701 and a reducer 702 , and the reducer 702 is drivingly connected to the driving wheel 6 .

As shown in FIG. 1 , the connecting seat 1 includes a bottom plate 101 and two vertical plates 102. The vertical plate 102 is symmetrically fixed on the bottom plate 101. The vertical plate 102 is provided with a shaft hole 2, and the pin shaft 3 is arranged in the shaft hole 2. The end of the floating plate 5 is located between the two vertical plates 102 .

As shown in FIG. 1 , the upper end of the bracket 11 is fixedly connected with a connecting groove plate 10 , and the lower end is provided with a connecting plate 12 .

As shown in FIG. 3, the axis of the rotating flange 402, the axis of the driving wheel 6, and the axis of the lower connecting rod 901 are in a triangle shape on the same vertical plane, and the three sides of the triangle are a, b, and c respectively; the rotating flange 402 The ratio of the distance from the axis to the axis of the driving wheel 6 and the distance from the axis of the rotary flange 402 to the axis of the lower link 901 is a:c. Specifically, the distance from the axis of the rotary flange 402 to the axis of the driving wheel 6 is a, and the distance from the axis of the rotary flange 402 to the axis of the lower connecting rod 901 is c. When the driving wheel 6 floats up and down when the road surface is uneven, The floating plate 5 transmits the floating to the spring 903. Using the lever principle, the compression amount of the spring 903 is c/a times, and the spring force generated by the compression amount of the spring 903 is used to maintain sufficient positive pressure between the driving wheel and the ground at all times. It is finally converted into the driving force of the vehicle.

Specifically, in this embodiment, a:c is 1:2, that is, the distance from the axis of the rotating flange 402 to the axis of the lower connecting rod 901 is twice the distance from the axis of the rotating flange 402 to the axis of the driving wheel 6, correspondingly, The amount of compression when the spring 903 is floated is doubled.

Referring to the standard parameters of the national road surface, the plane of the road surface is within the range of ±10mm. In this embodiment, the driving wheel 6 can meet the floating amount of ±10mm, and the basic working state is at the 0 o'clock position. When the driving wheel 6 encounters a bump on the road surface, the AGV car will have a sudden bumpy state. The maximum bump height is 10mm. Since the shock absorber 9 has damping and is provided with an adjustment nut 904, the extension length of the spring 903 can be adjusted. In actual use, fine-tuning can be adopted according to the actual situation of the road surface, so that the AGV car shock-absorbing suspension device can reach the best state, and because the shock absorber has an adjustable damping device, the AGV can reduce the load during walking. The walking impact of goods and auxiliary tooling makes the AGV travel more stable and reliable.

The drive wheel 6 of the utility model is connected with the frame by a flexible connection of a shock absorber, and the AGV trolley can effectively compensate for the uneven road surface and achieve a good shock absorption effect when the road surface is uneven. Since the AGV trolley is adapted to the working environment of all elements, the internal structure of the AGV is small, and the structure of the shock-absorbing suspension device is compact. Under the working requirements, it can be produced in large quantities.

The utility model utilizes the lever principle, which can save labor by leveraging the lever to move heavy objects in production and life. The connecting base 1 is connected with the frame, the floating plate 5 rotates around the connecting base 1, the floating plate 5 acts on the shock absorber 9 and floats freely up and down. The bracket 11 is connected with the frame, and the shock absorption force is transmitted to the frame. The driving force required by the driving wheel 6 is determined by the lever ratio. The size of the shock absorber force of the AGV trolley is related to the bearing capacity of the AGV trolley and the driving force required by the AGV trolley.

The above is only the preferred embodiment of the present utility model, and is not intended to limit the present utility model in any form. Any simple modifications made to the above embodiments according to the technical essence of the present utility model are equivalent to changes and modifications. All belong to the scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a shock attenuation suspension device for AGV which characterized in that: comprises a floating plate (5), a connecting seat (1), a shock absorber (9), a bracket (11), a driving wheel (6) and a driving device (7);

one end of the floating plate (5) is hinged with the connecting seat (1) through a rotary flange plate (402);

the bottom end of the shock absorber (9) is fixedly connected with one end, far away from the connecting seat (1), of the floating plate (5) through a lower connecting rod (901), and the top end of the shock absorber (9) is fixedly connected with the support (11);

the driving wheel (6) is arranged in the middle of the floating plate (5), and the driving device (7) drives the driving wheel (6) to move;

the axis of the rotary flange plate (402), the axis of the driving wheel (6) and the axis of the lower connecting rod (901) are in a triangular shape on the same vertical plane; the ratio of the distance from the axis of the rotary flange plate (402) to the axis of the driving wheel (6) to the distance from the axis of the rotary flange plate (402) to the axis of the lower connecting rod (901) is a: c.

2. A shock absorbing suspension for AGV according to claim 1, wherein: the ratio of a to c is 1: 2.

3. A shock absorbing suspension for AGV according to claim 1, wherein: and a spring (903) and an adjusting nut (904) are arranged on the shock absorber (9).

4. A shock absorbing suspension for AGV according to claim 1, wherein: the connecting seat (1) comprises a bottom plate (101) and two vertical plates (102), wherein the vertical plates (102) are symmetrically fixed on the bottom plate (101).

5. A shock absorbing suspension for AGV according to claim 1, wherein: a pin shaft (3) is connected to the inside of the rotary flange plate (402), and the pin shaft (3) is fixed on the connecting seat (1); a wear-resistant sleeve (401) is arranged between the pin shaft (3) and the rotary flange plate (402); and one end of the pin shaft (3) is also provided with a stop washer (403) and a round nut (404).

6. A shock absorbing suspension for AGV according to claim 1, wherein: the driving device (7) comprises a motor (701) and a speed reducer (702), and the speed reducer (702) is in driving connection with the driving wheel (6).

7. A shock absorbing suspension for AGV according to claim 1, wherein: the upper end of the bracket (11) is fixedly connected with a connecting groove plate (10), and the lower end is provided with a connecting plate (12).

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