A universal wheel special for AGV

Abstract

The utility model provides a kind of universal wheel special for AGV, include: mounting plate, two cushioning mechanisms, driving wheel and connecting mechanism, wherein, two cushioning mechanisms are symmetrically arranged on mounting plate, and the bottom end of each cushioning mechanism is penetrated and extends mounting plate;Connecting mechanism includes outer support, first rivet, inner support, second rivet and auxiliary assembly, wherein, outer support is set on the extended end of two cushioning mechanisms.The universal wheel special for AGV of the utility model embodiment, the rotation angle of inner support and inner support is changed by auxiliary assembly, the adjustment of the use height of driving wheel is realized, it is guaranteed that driving wheel always keeps reliable contact with ground, guarantee the stability and safety of AGV travel, simultaneously, by telescopic link and shock-absorbing spring cooperation, the vibration generated by uneven road surface can be effectively absorbed, reduce the influence of vibration to vehicle body, further improve the stability of AGV travel and equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of caster wheel technology, and in particular to a caster wheel specifically designed for AGVs. Background Technology

[0002] AGVs are automated vehicles that can autonomously complete tasks such as cargo transportation and material handling according to preset paths or through real-time navigation without human drivers. They are widely used in warehousing and logistics, smart manufacturing, and electronic workshops.

[0003] In commercially available AGVs, the wheel assembly typically includes drive wheels and follower wheels. The drive wheels, as the power output components, are responsible for providing the driving and braking forces required for the AGV to move. The follower wheels mainly play an auxiliary support and steering guidance role, working with the drive wheels to achieve flexible steering of the vehicle.

[0004] In existing technologies, follower wheels are connected to the AGV body via a mounting plate. Individual wheels are then directly connected to the mounting plate via pins or bolts, allowing for passive rotation. However, these wheels are not well-suited for various applications, significantly limiting their applicability. Furthermore, current designs often only incorporate shock-absorbing components on the drive wheels, neglecting to design shock-absorbing mechanisms for the follower wheels. This results in the wheels failing to buffer road impacts, easily transmitting vibrations directly to the AGV body, causing vehicle bumps and unstable cargo placement. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] Therefore, one objective of this utility model is to propose a special universal wheel for AGVs, which can adjust the height of the drive wheel to ensure that the drive wheel always keeps in contact with the ground, thus ensuring the stability of the AGV. At the same time, through the cooperation of the telescopic rod and the shock-absorbing spring, it can effectively absorb the vibration caused by uneven road surface and reduce the impact of vibration on the vehicle body.

[0007] To achieve the above objectives, the first aspect of this utility model proposes a special universal wheel for AGVs, comprising: a mounting plate, two damping mechanisms, a drive wheel, and a connecting mechanism. The two damping mechanisms are symmetrically arranged on the mounting plate, with the bottom end of each damping mechanism extending through the mounting plate. The connecting mechanism includes an outer bracket, a first rivet, an inner bracket, a second rivet, and an auxiliary component. The outer bracket is disposed at the extended ends of the two damping mechanisms. The first rivet is riveted to the outer bracket. The inner bracket is disposed inside the outer bracket, with one end of the inner bracket sleeved on the outside of the first rivet. The second rivet is disposed at the end of the inner bracket away from the first rivet. The auxiliary component is disposed on the inner bracket. The drive wheel is disposed inside the inner bracket, with the drive wheel sleeved on the outside of the second rivet.

[0008] In addition, the AGV-specific universal wheel proposed above according to this utility model may also have the following additional technical features: Specifically, the shock-absorbing mechanism includes a telescopic rod and a shock-absorbing spring. The telescopic rod is mounted on the mounting plate, and its bottom end extends through the mounting plate and connects to the outer bracket. The shock-absorbing spring is sleeved on the outside of the telescopic rod between the mounting plate and the outer bracket. One end of the shock-absorbing spring is connected to the mounting plate, and the other end is connected to the outer bracket.

[0009] Specifically, the auxiliary component includes two auxiliary wheels and a drive source, wherein the two auxiliary wheels are symmetrically arranged on the two side walls of the inner support; the drive source is movably connected to the bottom end of the outer support, and the output end of the drive source is movably connected to the upper end of the inner support.

[0010] Specifically, the width of the inner support is smaller than the width of the outer support, and the outer support and the inner support together form a rotating structure.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The AGV-specific universal wheel of the present invention can adjust the height of the drive wheel by changing the rotation angle of the inner and outer supports and the inner support through auxiliary components, ensuring that the drive wheel always maintains reliable contact with the ground, thus ensuring the stability and safety of AGV driving. At the same time, through the cooperation of telescopic rod and shock-absorbing spring, it can effectively absorb the vibration caused by uneven road surface, reduce the impact of vibration on the vehicle body, and further improve the stability of AGV driving and the service life of the equipment.

[0012] Additional aspects and advantages of this invention 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 invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of an AGV-specific universal wheel according to an embodiment of the present invention; Figure 2 This is a side view of a special universal wheel for AGVs according to an embodiment of the present invention. Figure 3 This is a front view schematic diagram of an AGV-specific universal wheel according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the main cross-sectional structure of an AGV-specific universal wheel according to an embodiment of the present invention.

[0014] Reference numerals: 1. Mounting plate; 2. Shock absorption mechanism; 21. Telescopic rod; 22. Shock-absorbing spring; 3. Drive wheel; 4. Connecting mechanism; 41. Outer bracket; 42. First rivet; 43. Inner bracket; 44. Second rivet; 45. Auxiliary component; 451. Auxiliary wheel; 452. Drive source. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] The following describes an embodiment of the present invention with reference to the accompanying drawings: a special universal wheel for AGVs.

[0017] like Figures 1-4 As shown in the figure, an AGV-specific universal wheel according to an embodiment of the present invention includes: a mounting plate 1, two shock-absorbing mechanisms 2, a drive wheel 3, and a connecting mechanism 4.

[0018] Two damping mechanisms 2 are symmetrically arranged on the mounting plate 1, and the bottom end of each damping mechanism 2 extends through the mounting plate 1.

[0019] It should be noted that the mounting plate 1 described in this embodiment is fastened to one end of each shock-absorbing mechanism 2 by bolts to avoid affecting the normal operation of the AGV due to loose connection.

[0020] The connecting mechanism 4 includes an outer bracket 41, a first rivet 42, an inner bracket 43, a second rivet 44, and an auxiliary component 45. The outer bracket 41 is disposed at the extended ends of the two damping mechanisms 2. The first rivet 42 is riveted to the outer bracket 41. The inner bracket 43 is disposed inside the outer bracket 41, and one end of the inner bracket 43 is sleeved on the outside of the first rivet 42. The second rivet 44 is disposed at the end of the inner bracket 43 away from the first rivet 42. The auxiliary component 45 is disposed on the inner bracket 43. The drive wheel 3 is disposed inside the inner bracket 43, and the drive wheel 3 is sleeved on the outside of the second rivet 44.

[0021] It should be noted that the drive wheel 3 described in this embodiment rotates by being sleeved on the outside of the second rivet 44. At the same time, the width of the drive wheel 3 is smaller than the width of the inner bracket 43 to avoid friction between the drive wheel 3 and the side wall of the inner bracket 43 during rotation.

[0022] Specifically, when installing the caster wheels, the mounting plate 1 is aligned and connected with the pre-set mounting seat on the AGV body, and then the appropriate fastening bolts are inserted and tightened with a wrench to ensure that the caster wheels are securely connected to the AGV body.

[0023] During use, when passing over uneven road surfaces, the road surface will generate an upward or downward impact force on the drive wheel 3. This impact force is transmitted to the damping mechanism 2 through the inner bracket 43 and the outer bracket 41. At this time, the damping mechanism 2 can absorb the impact energy, reduce the transmission of vibration to the AGV body, and improve driving stability.

[0024] At the same time, the auxiliary component 45 can adaptively adjust the rotation angle of the inner bracket 43 and the outer bracket 41, thereby adjusting the height of the drive wheel 3, so that the caster wheel can be used in different environments.

[0025] In one embodiment of this utility model, such as Figure 2 As shown, the damping mechanism 2 includes a telescopic rod 21 and a damping spring 22. The telescopic rod 21 is mounted on the mounting plate 1, and the bottom end of the telescopic rod 21 extends through the mounting plate 1 and connects to the outer bracket 41. The damping spring 22 is sleeved on the outside of the telescopic rod 21 between the mounting plate 1 and the outer bracket 41. One end of the damping spring 22 is connected to the mounting plate 1, and the other end of the damping spring 22 is connected to the outer bracket 41.

[0026] It is understood that the shock-absorbing spring 22 described in this embodiment is initially in a pre-compressed state, which can counteract the pressure brought by the weight of the omnidirectional wheel and the AGV itself, so that the drive wheel 3 always maintains reliable contact with the ground.

[0027] Specifically, when traversing uneven road surfaces, the bumps or depressions on the road surface will generate an upward or downward impact force on the drive wheel 3. The impact force is transmitted to the bottom end of the telescopic rod 21 through the inner bracket 43 and the outer bracket 41, pushing the telescopic rod 21 to contract upward or stretch downward, causing the shock-absorbing spring 22 to deform. In this way, the elasticity of the shock-absorbing spring 22 is used to weaken the impact on the AGV body, effectively buffering the vibration and ensuring the smoothness of the AGV's driving.

[0028] In one embodiment of this utility model, such as Figure 2 As shown, the auxiliary component 45 includes two auxiliary wheels 451 and a drive source 452. The two auxiliary wheels 451 are symmetrically arranged on the two side walls of the inner bracket 43. The drive source 452 is movably connected to the bottom end of the outer bracket 41, and the output end of the drive source 452 is movably connected to the upper end of the inner bracket 43.

[0029] It should be noted that the width of the auxiliary wheel 451 described in this embodiment is smaller than the width of the driving wheel 3, and the auxiliary wheel 451 is located on both sides of the driving wheel 3. This allows the auxiliary wheels 451 on both sides to simultaneously contact the edge of the pothole when the driving wheel 3 tends to be suspended due to road surface undulations, forming a stable triangular support structure.

[0030] Additionally, it should be noted that the drive source 452 described in this embodiment prioritizes the electric actuator, which controls the extension and retraction of the inner support 43 to drive its rotation.

[0031] Specifically, when encountering a pothole, if the drive wheel 3 sinks below and tends to sink or become suspended, the inner support 43 will tilt as the force on the drive wheel 3 changes. At this time, the auxiliary wheel 451 will gradually approach the ground at the edge of the pothole and simultaneously make contact with the ground. After the auxiliary wheel 451 makes contact with the ground, it can transfer part of the load to the edge of the pothole, balance the force on the drive wheel 3, and ensure that the drive wheel 3 can still maintain contact pressure with the bottom of the pothole, avoiding loss of ground friction due to complete suspension. At the same time, the support points formed by the auxiliary wheels 451 on both sides provide stable support for the drive wheel 3.

[0032] In one embodiment of this utility model, such as Figure 1 and Figure 4 As shown, the width of the inner support 43 is smaller than the width of the outer support 41, and the outer support 41 and the inner support 43 together form a rotating structure.

[0033] It should be noted that the width of the outer support 41 described in this embodiment is greater than that of the inner support 43, so that when the inner support 43 rotates inside the outer support 41, sidewall interference between the two can be avoided during the rotation process.

[0034] Specifically, the inner bracket 43 is driven by the drive source 452 to rotate around the first rivet 42, thereby adjusting the distribution angle between the inner bracket 43 and the outer bracket 41, and thus realizing convenient adjustment of the height of the drive wheel 3.

[0035] In summary, this utility model provides a special universal wheel for AGVs. By using auxiliary components to change the rotation angle of the inner and outer supports, the height of the drive wheel can be adjusted, ensuring that the drive wheel always maintains reliable contact with the ground, thus guaranteeing the stability and safety of the AGV. At the same time, through the cooperation of the telescopic rod and the shock-absorbing spring, it can effectively absorb the vibration caused by uneven road surfaces, reduce the impact of vibration on the vehicle body, and further improve the smoothness of AGV operation and the service life of the equipment.

[0036] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A special universal wheel for AGVs, characterized in that, include: The components include a mounting plate, two damping mechanisms, a drive wheel, and a connecting mechanism. The two shock-absorbing mechanisms are symmetrically arranged on the mounting plate, and the bottom end of each shock-absorbing mechanism extends through the mounting plate; The connecting mechanism includes an outer bracket, a first rivet, an inner bracket, a second rivet, and auxiliary components, wherein... The outer support is installed at the extended ends of the two damping mechanisms; The first rivet is riveted to the outer bracket; The inner bracket is disposed inside the outer bracket, and one end of the inner bracket is sleeved on the outside of the first rivet. The second rivet is disposed at the end of the inner bracket away from the first rivet; The auxiliary components are mounted on the inner support; The drive wheel is disposed inside the inner bracket and is sleeved on the outside of the second rivet.

2. The AGV-specific universal wheel according to claim 1, characterized in that, The shock-absorbing mechanism includes a telescopic rod and a shock-absorbing spring, wherein, The telescopic rod is mounted on the mounting plate, and the bottom end of the telescopic rod extends through the mounting plate and connects to the outer bracket; The shock-absorbing spring is sleeved on the outside of the telescopic rod between the mounting plate and the outer bracket. One end of the shock-absorbing spring is connected to the mounting plate, and the other end of the shock-absorbing spring is connected to the outer bracket.

3. The AGV-specific universal wheel according to claim 1, characterized in that, The auxiliary component includes two auxiliary wheels and a drive source, wherein, The two auxiliary wheels are symmetrically arranged on the two side walls of the inner bracket; The drive source is movably connected to the bottom end of the outer bracket, and the output end of the drive source is movably connected to the upper end of the inner bracket.

4. The AGV-specific universal wheel according to claim 1, characterized in that, The width of the inner support is smaller than the width of the outer support, and the outer support and the inner support together form a rotating structure.

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