Driving unit and AGV trolley

Abstract

The utility model belongs to the field of AGVs (Automatic Guided Vehicles), and particularly relates to a driving unit and an AGV. Comprising a mounting frame, wheels and a driver, the wheels and the driver are mounted on the mounting frame, the driver is in transmission connection with the wheels, and the driver is used for driving the wheels to rotate; the number of the wheels is at least two, and the wheels are arranged front and back. The utility model provides a driving unit which aims at solving the problem that a conventional driving unit is poor in obstacle crossing ability. The utility model provides a driving unit which aims at solving the problem that a conventional driving unit is poor in obstacle crossing ability.

Description

Technical Field

[0001] The utility model belongs to the field of AGV trolleys, and specifically relates to a driving unit and an AGV trolley. Background Art

[0002] AGV, also known as Automatic Guided Vehicle, is widely used in production, and its main function is to move objects. AGVs are classified according to the way they move, including AGVs that move along a set track and AGVs that move freely on the ground.

[0003] The AGV trolley moving on the ground is usually equipped with a drive unit as a forward power, and the drive units are respectively arranged on both sides of the AGV trolley. The drive unit usually includes a driver and a wheel, the wheel is in contact with the ground, the driver is connected to the wheel by transmission, and the driver drives the wheel to rotate so that the wheel moves on the ground. The conventional drive unit structure can refer to the applicant's prior application (for example: a drive mechanism with application number 2023206544136 and an AGV trolley using the drive assembly) or other prior art.

[0004] Conventionally, each drive unit is usually equipped with only one wheel, and since the wheels move on the ground, the ground environment is complex and often has grooves or pits. Therefore, when the wheels of conventional drive units pass through grooves or pits, they often get stuck in the grooves or pits, and the obstacle crossing ability is poor.

[0005] In summary, the prior art has the problem that the driving unit has poor obstacle surmounting capability. Utility Model Content

[0006] The utility model provides a driving unit, which aims to solve the problem that the conventional driving unit has poor obstacle crossing ability.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a driving unit, including a mounting frame, a wheel and a driver, wherein the wheel and the driver are mounted on the mounting frame, the driver is connected to the wheel by driving, and the driver is used to drive the wheel to rotate; the wheel is provided in at least two pieces, and arranged front to back. In this solution, there are at least two wheels, and they are arranged front to back. When the wheel moves to a pit or a groove, the wheels arranged front to back can support each other so that the wheel will not fall into the pit. Compared with only one wheel, the driving unit in this solution has a stronger obstacle-crossing capability.

[0008] Optionally, in order to ensure that the wheels rotate at the same speed and at the same time, the driver is preferably connected to at least two wheels through a transmission module. In this solution, at least two wheels are rotated simultaneously by one driver. Therefore, the rotation speed and rotation time of the front and rear wheels are the same, avoiding the front and rear wheels from getting stuck due to inconsistent speeds or inconsistent movement time. In addition, driving by one driver can reduce costs and facilitate manufacturing and use.

[0009] Optionally, in order to realize transmission, the transmission module preferably includes an active unit and a follower component, wherein the active unit and the follower component are in transmission connection, the active unit is in transmission connection with the driver, and the follower component is in transmission connection with the wheel. In this solution, the active unit is in transmission connection with the driver, and the active unit is in transmission connection with the follower component. Therefore, when the driver works, the active unit works accordingly. Finally, through the coordinated transmission of the active unit and the follower component, the wheel also rotates accordingly.

[0010] Optionally, in order to achieve transmission connection with the follower component, the active unit preferably includes an active gear, the follower component is a follower gear, and the active gear and the follower gear are meshed for transmission. In this solution, the active unit includes an active gear, and the follower component is a follower gear. Through the meshing transmission between the gears, the wheel can be driven by the active unit to rotate.

[0011] In order to achieve transmission connection with the driver, the active unit preferably includes a synchronous pulley in this solution, and the driver is connected to the synchronous pulley through a synchronous belt transmission. In this solution, the active unit includes a synchronous pulley, and a synchronous pulley is also configured on the output shaft of the driver. Driven by the synchronous pulley, the driver rotates, and the active unit also rotates accordingly.

[0012] Optionally, in order to make the driving unit have stronger ground adaptability, the present solution preferably comprises a mounting portion and a supporting portion, wherein the mounting portion is mounted on the supporting portion via a rotating shaft, the mounting portion can rotate around the rotating shaft, and the wheels are mounted on the mounting portion and are located on both sides of the front and rear of the rotating shaft. In the present solution, the wheels are mounted on the mounting portion, and the mounting portion can rotate slightly with the rotating shaft as the center. Therefore, when the wheel moves to a slightly raised position or a slightly depressed position, the mounting portion changes the angle of the wheel by rotating, thereby adapting to the uneven ground.

[0013] Optionally, in order to facilitate the installation of the active unit, the present solution preferably installs the active unit in a sleeve on the rotating shaft. After the active unit is installed on the rotating shaft, there is no need to separately set up an installation base for installing the active unit, and the structure is simpler.

[0014] Optionally, in order to ensure that at least one wheel can contact the ground when the wheel passes through the pit or groove, the wheels are preferably arranged in a straight line in the present embodiment. When the wheel passes through the pit or groove, since the wheels are arranged in a straight line in the front and back, at least one wheel will contact the ground, ensuring that the wheel can pass through the pit or groove smoothly.

[0015] Optionally, in order to make the structure of the entire device more compact, the present solution preferably comprises a drive motor, and the drive motor is located on the side of the wheel.

[0016] The utility model provides an AGV vehicle, comprising the above-mentioned driving unit and a frame, wherein the frame is provided with the driving unit. When the driving unit is installed on the frame, the driving unit works and drives the frame to move.

[0017] The beneficial effect of the utility model is that when it is necessary to pass through a pit or a groove, the front and rear wheels in the present solution can support each other, so that the entire drive unit will not fall into the pit or the groove, and the obstacle crossing ability of the drive unit is stronger than that in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the drive unit.

[0019] Figure 2 A top view of the drive unit.

[0020] Figure 3 It is a schematic diagram of the matching between the driving gear and the driven gear.

[0021] Figure 4 This is a schematic diagram of the AGV vehicle in Example 2.

[0022] The reference numerals include: mounting frame 1, supporting portion 11, mounting portion 12, wheel 2, driver 3, synchronous pulley 4, driving gear 5, follower gear 6, rotating shaft 7, central shaft 8, frame 9. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0024] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0025] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0026] Example 1

[0027] Basically as attached Figure 1 To Attachment Figure 2 As shown, a driving unit is used as a driving power. The specific structure of the driving unit includes a mounting frame 1, a wheel 2 and a driver 3. The wheel 2 and the driver 3 are both mounted on the mounting frame 1, and the mounting frame 1 fixes the wheel 2 and the driver 3 so that the wheel 2 and the driver 3 can be stably matched. At the same time, in the embodiment of the present disclosure, it is preferred that the wheel 2 is configured as at least two, and at least two wheels 2 are in a transmission connection state with the driver 3. The driver 3 can drive at least two wheels 2 to rotate at the same time, so that the rotation time, rotation direction and rotation speed of the wheel 2 remain the same, ensuring that different wheels 2 will not get stuck due to different rotation time, rotation direction or rotation speed. At the same time, using a driver 3 as a seat power can also effectively save costs and facilitate manufacturing and use.

[0028] In the embodiment of the present disclosure, at least two wheels 2 are configured, and the wheels 2 are arranged in a straight line in front and back. Therefore, in an application scenario, taking two wheels 2 arranged in front and back as an example, when the wheel 2 located in the front moves to the groove or the position of the groove, the wheel 2 located in the rear is still in contact with the ground, so the wheel 2 located in the rear can support the wheel 2 located in the front, so that the wheel 2 in the front will not fall into the groove or the inside of the pit. At the same time, as the rear wheel 2 moves, the wheel 2 in the front can cross the pit or the groove. After that, when the wheel 2 located in the rear moves to the position of the groove or the pit, the wheel 2 located in the front is in contact with the ground, and the wheel 2 located in the front can support the wheel 2 located in the rear, so that the wheel 2 located in the rear can cross the groove or the pit, avoiding the wheel 2 located in the rear from falling into the groove or the inside of the pit. It can be seen from the above process that the drive unit of the embodiment of the present disclosure has a better obstacle crossing capability than the conventional drive unit in the prior art, avoiding the drive unit from being stuck in the groove or the pit.

[0029] It should be noted that: in the embodiment of the present disclosure, preferably, the wheels 2 are configured as two, but the number of wheels 2 is not limited. In some other embodiments, the number of wheels 2 can also be 3, 4, or 5, etc. Of course, when the number of wheels 2 changes, how to drive all wheels 2 to move at the same time can be changed accordingly with reference to the prior art. For example, a follower gear can be configured between adjacent wheels for meshing transmission.

[0030] like Figure 2 As shown, the mounting frame 1 in the embodiment of the present disclosure specifically includes a support portion 11 and a mounting portion 12, and the support portion 11 is specifically a frame composed of a plurality of vertically arranged metal plates, and its shape is not limited. In this embodiment, the support portion 11 can be in the shape of a rectangular frame. The mounting portion 12 in the embodiment of the present disclosure is specifically a rectangular frame, which is installed inside the support portion 11. When the mounting portion 12 is specifically installed, a rectangular mounting opening can be constructed inside the support portion 11 for the mounting portion 12 to be accommodated and installed. The mounting portion 12 is specifically installed inside the mounting opening through a rotating shaft 7. The rotating shaft 7 is set through the middle of the mounting portion 12, and the left and right ends of the rotating shaft 7 are rotatably connected to the side walls on both sides of the mounting opening. At the same time, in order to avoid the rotating shaft 7 from scratching the mounting portion 12 and the support portion 11, the connection between the rotating shaft 7 and the mounting portion 12 and the support portion 11 can be correspondingly configured with bearings, so that the rotating shaft 7 can rotate freely while the rotating shaft 7 will not be restricted or scratched by the mounting portion 12 and the support portion 11.

[0031] like Figure 3 As shown, the wheel 2 in the embodiment of the present disclosure is installed inside the mounting portion 12 through a transmission shaft, and the left and right ends of the transmission shaft are rotatably connected to the inner wall of the mounting portion 12. The wheel is fixedly mounted on the transmission shaft so that the wheel 2 can rotate with the rotation of the transmission shaft. In order to avoid scratches at the connection between the transmission shaft and the mounting portion 12, a bearing can also be configured at the connection between the transmission shaft and the mounting portion 12 in the embodiment of the present disclosure.

[0032] like Figure 2 As shown, in the disclosed embodiment, the wheel 2 is installed inside the mounting portion 12, and the wheel 2 is preferably located at the front and rear sides of the rotating shaft 7. Since the mounting portion 12 can rotate around the rotating shaft 7, in one application scenario, when the ground is partially bumpy, the mounting portion 12 rotates at a small angle around the rotating shaft 7, so that the wheel 2 installed on the mounting portion 12 can fit the ground better and has a stronger adaptability to the ground.

[0033] like Figure 2As shown, in order to achieve the driving of the wheel 2, the driver 3 in the embodiment of the present disclosure is connected to the wheel 2 through the transmission module. The driver 3 specifically includes a reducer and a drive motor, and the reducer is installed at the output end of the drive motor, and the reducer is preferably a corner reducer. When installed, the driver 3 is located on the inner side of the wheel 2, and the driver 3 and the wheel 2 are arranged in parallel to each other, so that the structure of the entire drive unit is more compact and the integration is higher.

[0034] like Figure 2 As shown, in the disclosed embodiment, the driving motor and the transmission module are respectively located on the left and right sides of the wheel 2, and the driving motor is connected to the transmission module through a reducer. The transmission module includes an active unit and a follower component, and the active unit includes a synchronous pulley 4 and a driving gear 5. The synchronous pulley 4 and the driving gear 5 are both mounted on the rotating shaft 7 and fixedly connected to the rotating shaft 7. During implementation, it can be fixedly installed by welding or configuring fasteners. The follower component is preferably a follower gear 6, and the follower gear 6 is fixedly installed on the transmission shaft of the wheel 2. During implementation, it can be fixedly installed by welding or configuring fasteners. In the disclosed embodiment, a synchronous pulley 4 is configured on the output shaft of the reducer, and the synchronous pulley 4 configured on the reducer is connected to the synchronous pulley 4 configured on the rotating shaft 7 through a synchronous belt drive.

[0035] In one application scenario, when the driving motor and the reducer are working, the reducer can drive the rotating shaft 7 to rotate due to the transmission of the synchronous belt. Since the driving gear 5 is fixedly mounted on the rotating shaft 7, when the rotating shaft 7 rotates, the driving gear 5 also rotates accordingly. Since the driving gear 5 and the follower gear 6 are in a meshing connection state, the follower gear 6 can be driven to rotate by the driving gear 5. Finally, since the follower gear 6 is fixedly mounted on the transmission shaft, the wheel 2 is driven to rotate by the follower gear 6. At the same time, since the wheel 2 is located on the front and rear sides of the rotating shaft 7, the rotating shaft 7 corresponding to the wheel 2 is also located on the front and rear sides of the driving gear 5. The driving gear 5 can simultaneously drive the follower gears 6 on the front and rear sides to rotate, ensuring that the wheels 2 on the front and rear sides rotate accordingly.

[0036] In the embodiment of the present disclosure, transmission is performed by gear meshing. However, there may be multiple transmission methods in the prior art, and other transmission methods may be used in some other embodiments. For example, the driving gear 5 may be replaced by a driving sprocket, and the follower gear 6 may be replaced by a follower sprocket. The driving sprocket and the follower sprocket are connected by a chain. Alternatively, the driving gear 5 may be replaced by a synchronous pulley 4, and the follower gear 6 may also be replaced by a synchronous pulley 4, and the transmission connection may be performed by a synchronous belt.

[0037] In the embodiment of the present disclosure, since the driver 3 and the rotating shaft 7 are connected by a synchronous belt, Figure 1As shown, in order to prevent the synchronous belt from being too low from the ground, in the embodiment of the present disclosure, the outer thickness of the support portion 11 is preferably smaller than the inner thickness of the support portion 11, so that the size of the synchronous pulley 4 can be set to be smaller. Therefore, the height of the synchronous belt matched with the synchronous pulley 4 can be far away from the ground, avoiding contact between the synchronous belt and the ground, and preventing the synchronous belt from being damaged by impurities protruding from the ground.

[0038] The following is a further detailed description through a specific implementation method: In this solution, at least two wheels 2 arranged front and back are provided. When moving to the groove or pit position, the wheel 2 located in the front moves to the groove or pit first, at which time, the wheel 2 located in the rear can support the wheel 2 located in the front, so that the wheel 2 in the front does not fall into the groove or pit. Then, as the wheel 2 located in the rear continues to rotate, the wheel 2 in the front crosses the groove or pit and contacts the ground. Then, as the wheels 2 rotate, the wheel 2 located in the rear moves to the groove or pit, at which time, the wheel 2 located in the front can support the wheel 2 located in the rear, so that the wheel 2 in the rear does not fall into the groove or pit.

[0039] Example 2

[0040] The present disclosure discloses an AGV vehicle, such as Figure 4 As shown, it includes the drive unit of embodiment 1 and the frame 9, and the mounting frame 1 in the drive unit is connected to the frame 9. The frame 9 is rectangular as a whole, and the drive units are symmetrically arranged on the left and right sides of the frame 9. The drive units on both sides can drive both sides of the frame 9 at the same time, so that the AGV trolley moves forward.

[0041] Of course, in the disclosed embodiment, it is preferred that the drive units in Embodiment 1 are disposed on both the left and right sides of the frame 9. However, in some other embodiments, the drive unit may be disposed only on one side of the frame 9, and other drive units in the prior art may be disposed on the other side of the frame 9.

[0042] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A drive unit, characterized in that: It comprises a mounting frame (1), a wheel (2) and a driver (3), wherein the wheel (2) and the driver (3) are mounted on the mounting frame (1), the driver (3) is in driving connection with the wheel (2), and the driver (3) is used to drive the wheel (2) to rotate; The wheels (2) are arranged in at least two numbers and arranged in a front-to-back arrangement. The wheels (2) are arranged in a front-to-back inline arrangement.

2. The drive unit according to claim 1, characterized in that: The drive (3) is transmission-connected to at least two wheels (2) via a transmission module.

3. The drive unit according to claim 2, characterized in that: The transmission module comprises an active unit and a follower component, the active unit and the follower component are in transmission connection, the active unit is in transmission connection with a driver (3), and the follower component is in transmission connection with the wheel (2).

4. The drive unit according to claim 3, characterized in that: The active unit comprises an active gear (5), the follower component is a follower gear (6), and the active gear (5) and the follower gear (6) are meshed and transmitted; and / or; The active unit comprises a synchronous belt pulley (4), and the driver (3) is connected to the synchronous belt pulley (4) via a synchronous belt transmission.

5. The drive unit according to claim 3, characterized in that: The mounting frame (1) comprises a mounting portion (12) and a supporting portion (11); the mounting portion (12) is mounted on the supporting portion (11) via a rotating shaft (7); the mounting portion (12) can rotate around the rotating shaft (7); and the wheel (2) is mounted on the mounting portion (12) and is located at the front and rear sides of the rotating shaft (7).

6. The drive unit according to claim 5, characterized in that: The active unit is sleeved and mounted on the rotating shaft (7).

7. The drive unit according to claim 1, characterized in that: The driver (3) comprises a drive motor, and the drive motor is located on the side of the wheel (2).

8. An AGV vehicle, characterized in that: It comprises a driving unit as claimed in any one of claims 1 to 7 and a frame (9), wherein the frame (9) is provided with the driving unit.

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