Charging device and transfer trolley

Abstract

The utility model discloses a charging device and a transfer trolley. The technical problem that a charging device in the prior art is large in occupied space is solved. The charging device comprises a support; the driving assembly comprises a driving part and a driving wheel, the driving part is installed on the support and provided with a rotatable output end, the driving wheel is in transmission connection with the output end of the driving part, the rim of the driving wheel is provided with a first position and a second position which are arranged in a spaced mode, and the driving wheel is driven by the driving part in the direction from the first position to the second position. The distance between the rim of the driving wheel and the rotating center is gradually increased; the lifting assembly comprises a lifting part and a reset part, the two ends of the reset part act on the support and the lifting part respectively, and the rim of the driving wheel abuts against the lifting part in a sliding mode; the charging part is used for being matched with the charging position, the charging part is arranged on the lifting part, and the charging part ascends and descends under the combined action of the reset part and the driving wheel so as to make contact with the charging position for charging or leave the charging position for finishing charging. The charging device is compact in structure in the height direction and small in occupied space.

Description

Technical Field

[0001] The present application belongs to the technical field of charging technology, and specifically relates to a charging device and a transfer vehicle. Background Art

[0002] An automated guided vehicle (AGV) is a transport vehicle equipped with an automatic guidance device such as an electromagnetic or optical device, which can travel along a specified guide path and has safety protection and various transfer functions.

[0003] Automated guided vehicles (AGVs) use electromagnetic tracks to establish their routes and rely on information from the tracks to move and operate. The electromagnetic tracks typically contain pre-embedded charging plates, which mate with brush assemblies attached to the AGV to charge the vehicle.

[0004] In the related art, a vertically arranged electric cylinder is used to achieve the lifting of the brush assembly, but it occupies a large height space. Summary of the Invention

[0005] In order to solve the current technical problem that the electric cylinder lifting brush assembly occupies a large space, the present application provides a charging device and a transfer vehicle.

[0006] In a first aspect of the present application, a charging device is provided, comprising:

[0007] Bracket;

[0008] A drive assembly comprising a drive member and a drive wheel, wherein the drive member is mounted on the bracket and has a rotatable output end, the drive wheel being in driving connection with the output end of the drive member, the rim of the drive wheel having a first position and a second position spaced apart, and the distance between the rim of the drive wheel and the rotation center gradually increases from the first position to the second position;

[0009] A lifting assembly includes a lifting member and a reset member, wherein two ends of the reset member act on the bracket and the lifting member respectively, and the rim of the driving wheel slides and presses against the lifting member;

[0010] The charging component is used to cooperate with the charging position. The charging component is arranged on the lifting component. The charging component rises and falls under the joint action of the reset component and the driving wheel to contact the charging position for charging or leave the charging position to end charging.

[0011] In some embodiments, the rim of the driving wheel is provided with a locking portion, and the locking portion is located at the second position.

[0012] In some embodiments, the locking portion is a locking plane or a locking notch.

[0013] In some embodiments, the rim of the driving wheel has a smooth transition.

[0014] In some embodiments, the driving wheel is an eccentric wheel or a cam.

[0015] In some embodiments, the rotation axis of the driving wheel and the lifting direction of the lifting member are perpendicular to each other.

[0016] In some embodiments, the lifting assembly includes a lifting frame and a guide post, the charging component is provided on the lifting frame, the lifting frame is provided with a guide hole, and the guide post is inserted into the guide hole;

[0017] The lifting member is a wear plate, which is mounted on the lifting frame, or the rim of the driving wheel is in sliding contact with the wear-resistant surface of the lifting frame, and the lifting frame forms the lifting member.

[0018] In some embodiments, there are two guide pillars and two guide holes, and they correspond one to one. The guide pillars are gap-inserted into the corresponding guide holes. The bracket is provided with a through hole for the charging component to pass through, and the guide pillars are located on both sides of the through hole in a radial direction.

[0019] In some embodiments, the reset member is a spring, the number of the springs is the same as the number of the guide pillars and corresponds one to one, and the springs are sleeved outside the corresponding guide pillars.

[0020] In a second aspect of the present application, a transfer vehicle is provided, comprising a vehicle body and the charging device of the first aspect, wherein the bracket is connected to the vehicle body.

[0021] According to the charging device provided in the embodiment of the present application, a driving wheel with a constant radius is used as a structure for driving the charging part to rise and fall. Along the direction from the first position to the second position, the distance between the contour line of the driving wheel and the center of rotation gradually increases, thereby realizing the height position adjustment of the lifting part. Therefore, the transfer vehicle only needs to provide space to accommodate the maximum diameter of the driving wheel, and there is no need to provide installation space in the height direction. Compared with the electric cylinder arranged in the vertical direction, it occupies a small height space and can be applied to AGV carts with low chassis, as well as AGV carts with high chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a charging device in one or more embodiments of the present application is shown.

[0023] Figure 2 Shown Figure 1 Schematic diagram of the structure of the driving wheel in the charging device.

[0024] Figure 3 Shown Figure 1 Side view of the charging device.

[0025] Figure 4Shown Figure 3 AA cross-section diagram.

[0026] Figure 5 Shown Figure 1 Bottom view of the charging device.

[0027] Figure 6 A schematic structural diagram of a transfer vehicle in one or more embodiments of the present application is shown.

[0028] Figure 7 Shown Figure 6 Bottom view of the transfer vehicle.

[0029] Description of reference numerals:

[0030] 100-hull,

[0031] 200 - Charging device, 210 - Bracket, 211 - Base, 212 - Through hole, 213 - Frame, 220 - Driving assembly, 221 - Driving member, 222 - Driving wheel, a - First position, b - Second position, 2221 - Locking portion, 2222 - Locking plane, 230 - Lifting assembly, 231 - Lifting member, 232 - Reset member, 233 - Lifting frame, 234 - Guide column, 240 - Charging member;

[0032] 300-Travel wheel set. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0034] The first embodiment of the present application provides a charging device with a small height dimension, which can be used in a transfer vehicle with a low chassis.

[0035] See also Figure 1 The charging device 200 provided in this application includes a bracket 210, a driving component 220, a lifting component 230 and a charging component 240.

[0036] The bracket 210 serves as a mounting base for the driving assembly 220 and the lifting assembly 230 , and can be connected to the body 100 of the transfer vehicle.

[0037] The driving assembly 220 includes a driving member 221 and a driving wheel 222. The driving member 221, such as a motor housing, is mounted on the bracket 210 and has a rotatable output end. The driving wheel 222 is connected to the output end. Therefore, the driving wheel 222 rotates together with the driving member 221 under the action of the driving member 221. Figure 2 The rim of the driving wheel 222 has a first position a and a second position b set at intervals. Along the direction from the first position a to the second position b, the distance between the rim of the driving wheel 222 and the rotation center increases successively, so the distance between the first position a and the rotation center is the smallest, and the distance between the second position b and the rotation center is the largest.

[0038] See also Figure 1 The lifting assembly 230 includes a lifting member 231 and a reset member 232. The rim of the driving wheel 222 slides against the lifting member 231. Therefore, as the driving wheel 222 rotates, the contact position between the driving wheel 222 and the lifting member 231 gradually changes. When the lifting member 231 abuts the rim at a first position a, the lifting member 231 is close to the driving member 221. When the lifting member 231 abuts the rim at a second position b, the lifting member 231 moves away from the driving member 221. Therefore, as the driving wheel 222 rotates, the distance between the lifting member 231 and the driving member 221 changes. When installing the lifting device, the axial direction of the driving wheel 222 is perpendicular to the height direction to achieve the lifting and lowering of the lifting member 231. Because the two ends of the reset member 232 act on the bracket 210 and the lifting member 231 respectively, the lifting member 231 can be reset under the action of the reset member 232.

[0039] The charging unit 240 is used to cooperate with the charging station, see Figure 4 The charging component 240 can be a charging brush with a brush block on it. The charging position can be provided with a brush plate that cooperates with the charging brush. The charging component 240 is arranged on the lifting component 231, so the lifting component 231 can drive the charging component 240 to rise and fall. The charging component 240 rises and falls under the joint action of the reset component 232 and the driving wheel 222 to contact the charging position for charging or leave the charging position to end charging.

[0040] Since the driving wheel 222 in the lifting device is not a wheel with a constant radius, the distance between the contour line of the driving wheel 222 and the center of rotation gradually increases from the first position a to the second position b, thereby realizing the position adjustment of the lifting member 231. It is only necessary to provide space to accommodate the maximum diameter of the driving wheel 222. Compared with the electric cylinder arranged in the vertical direction, it occupies a small height space and can be applied to AGV carts with low chassis as well as AGV carts with high chassis.

[0041] The charging station can be located on the ground, with the charging unit 240 lowered to engage the charging station for charging. Alternatively, the charging station can be located on the bracket 210, with the charging unit 240 raised to engage the charging station for charging. For ease of description, the following detailed description of the other structures of the charging device 200 will be based on the example of a ground-based charging station.

[0042] In some embodiments, see Figure 2 The rim of the driving wheel 222 is provided with a locking portion 2221, which is located at the second position b. This allows the lifting member 231 and the charging member 240 to remain at the lowest position, improving the stability of the charging member 240 and the charging station, and ensuring good contact between the charging member 240 and the charging station. In other embodiments, the driving member 221 can also be configured as a self-locking motor so that it does not rotate when the lifting member 231 abuts the second position b, thereby improving the stability of the charging member 240 and the charging station, and ensuring good contact between the charging member 240 and the charging station.

[0043] In some embodiments, see Figure 2 The locking portion 2221 may be a locking plane 2222, which forms a surface-to-surface abutment locking with the surface of the lifting member 231. After charging is completed, the driving member 221 rotates to overcome the locking force, allowing the driving wheel 222 to continue rotating. In other embodiments, the locking portion 2221 may be a locking notch, the edge of which forms a linear abutment locking with the surface of the lifting member 231. This can also improve the stability of the charging member 240 and the charging station, ensuring good contact between the charging member 240 and the charging station.

[0044] In some embodiments, see Figure 2 The rim of the driving wheel 222 has a smooth transition, for example, the driving wheel 222 is an eccentric wheel or a cam, so as to improve the stability of the driving wheel 222 driving the lifting member 231 to rise and fall. In other embodiments, the rim of the driving wheel 222 can also have a non-smooth transition, and the lifting member 231 can also be lifted and lowered.

[0045] In some embodiments, the rotation axis of the driving wheel 222 is perpendicular to the lifting direction of the lifting member 231, making the processing of the driving wheel 222 more convenient and accurate, and improving the lifting accuracy of the charging member 240. In other embodiments, the angle between the rotation axis of the driving wheel 222 and the lifting direction of the lifting member 231 can be obtuse or acute, which can also achieve the lifting of the charging member 240.

[0046] In some embodiments, see Figure 3 as well as Figure 4The lifting assembly 230 includes a lifting frame 233 and a guide post 234. The charging member 240 is arranged on the lifting frame 233. The lifting frame 233 is provided with a guide hole. The guide post 234 is inserted into the guide hole to improve the stability of the charging member 240 when it is lifted and lowered along the length direction of the guide post 234. In some embodiments, the lifting member 231 is a wear plate. The wear plate is installed on the lifting frame 233. The wear plate is wear-resistant and has a long service life despite repeated sliding friction with the rim of the driving wheel 222. In other embodiments, the rim of the driving wheel 222 slides against the wear-resistant surface of the lifting frame 233, and the lifting frame 233 forms the lifting member 231. In other words, the surface of the lifting frame 233 that slides in contact with the rim is a wear-resistant surface. In specific implementation, this can be achieved by coating the lifting frame 233 with a wear-resistant layer.

[0047] In some embodiments, see Figure 4 There are two guide posts 234 and two guide holes, each corresponding to each other. The guide posts 234 are interspersed in the corresponding guide holes. The bracket 210 is provided with a through hole 212 for the charging component 240 to pass through. The guide posts 234 are located on both sides of the through hole 212 in the radial direction. The hole wall of the through hole 212 can provide guidance for the charging component 240 during the lifting process. The provision of two guide posts 234 can further improve the stability of the charging component 240 during the lifting process. In other embodiments, three or four guide posts 234 and four guide holes can also be provided, which can also improve the stability of the charging component 240 during the lifting process.

[0048] In some embodiments, the reset member 232 may be a spring, the number of which is the same as and corresponds to the number of the guide posts 234. The spring is sleeved outside the corresponding guide post 234, with one end of the spring abutting against the bracket 210 and the other end abutting against the lifting frame 233. In other embodiments, the reset member 232 may also be a compression spring, which can also achieve the reset of the lifting member 231.

[0049] In some embodiments, see Figure 3 as well as Figure 5 The bracket 210 includes a base 211 and a frame 213. The base 211 is provided with a through hole 212. There are two frames 213. Both frames 213 are connected to the base 211. The guide rod is installed in the frame 213. The part of the lifting frame 233 provided with a guide hole extends into the frame 213 to realize the installation of various structures.

[0050] A second embodiment of the present application provides a transfer vehicle. Since the transfer vehicle has the charging device 200 of the first aspect, it has all the technical effects of the charging device 200 of the first aspect.

[0051] The transfer vehicle of the present application includes a vehicle body 100 and a charging device 200 according to any embodiment of the first aspect. The frame 100 of the charging device 200 is connected to the vehicle body 100 , specifically, the base is connected to the vehicle body 100 .

[0052] See also Figure 6 as well as Figure 7 The transport vehicle also includes a power source, a power unit, and a wheel assembly 300. The power source, which can be a lithium battery, is electrically connected to the power unit to provide electrical energy. The power source is electrically connected to a charging unit 240. When the power source is exhausted or nearly exhausted, the charging unit 240 engages a charging station to recharge the power source. The power unit is in transmission connection with the wheel assembly 300, which is rotatably mounted on the vehicle body 100. Thus, the transport vehicle can be driven to transport various items to be transported, such as bogies.

[0053] The transfer vehicle also includes a controller. When the power level of the power supply falls below a set value, the controller controls the transfer vehicle to move to the charging position. The controller is electrically connected to the driving member 221, causing the driving member 221 to rotate. The driving wheel 222 switches from the first position a to contact the lifting member 231, switches to the second position b, contacts the lifting member 231, and locks at the locking portion 2221. The charging member 240 contacts the charging position on the ground for charging. After charging is completed, the controller controls the driving member 221 to rotate, overcome the locking force of the locking portion 2221, and the driving wheel 222 switches from the second position b to contact the lifting member 231, switches to the first position a, contacts the lifting member 231, and completes automatic charging.

[0054] The charging device 200 provided in the present application uses an eccentric wheel or a cam as a lifting structure. The lifting structure is short and the total height of the charging device 200 is small. It is particularly suitable for AGV carts with low chassis, very low height, and light weight, such as AGV carts for transferring bogies (the maximum height of the AGV cart cannot exceed 155mm).

[0055] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0058] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0059] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A charging device, characterized in that: include: Bracket; A drive assembly comprising a drive member and a drive wheel, wherein the drive member is mounted on the bracket and has a rotatable output end, the drive wheel being in driving connection with the output end of the drive member, the rim of the drive wheel having a first position and a second position spaced apart, and the distance between the rim of the drive wheel and the rotation center gradually increases from the first position to the second position; A lifting assembly includes a lifting member and a reset member, wherein two ends of the reset member act on the bracket and the lifting member respectively, and the rim of the driving wheel slides and presses against the lifting member; The charging component is used to cooperate with the charging position. The charging component is arranged on the lifting component. The charging component rises and falls under the joint action of the reset component and the driving wheel to contact the charging position for charging or leave the charging position to end charging.

2. The charging device according to claim 1, characterized in that The rim of the driving wheel is provided with a locking portion, and the locking portion is located at the second position.

3. The charging device according to claim 2, characterized in that The locking portion is a locking plane or a locking notch.

4. The charging device according to any one of claims 1 to 3, characterized in that: The rim of the driving wheel has a smooth transition.

5. The charging device according to claim 4, characterized in that The driving wheel is an eccentric wheel or a cam.

6. The charging device according to any one of claims 1 to 3, characterized in that: The rotation axis of the driving wheel is perpendicular to the lifting direction of the lifting member.

7. The charging device according to any one of claims 1 to 3, characterized in that: The lifting assembly includes a lifting frame and a guide column, the charging component is arranged on the lifting frame, the lifting frame is provided with a guide hole, and the guide column is inserted into the guide hole; The lifting member is a wear plate, which is mounted on the lifting frame, or the rim of the driving wheel is in sliding contact with the wear-resistant surface of the lifting frame, and the lifting frame forms the lifting member.

8. The charging device according to claim 7, characterized in that There are two guide posts and two guide holes, and they correspond one to one. The guide posts are inserted into the corresponding guide holes. The bracket is provided with a through hole for the charging component to pass through. The guide posts are located on both sides of the through hole in the radial direction.

9. The charging device according to claim 7, characterized in that The reset member is a spring. The number of the springs is the same as the number of the guide pillars and corresponds one to one. The springs are sleeved outside the corresponding guide pillars.

10. A transfer vehicle, characterized in that: The vehicle comprises a vehicle body and the charging device according to any one of claims 1 to 9, wherein the bracket is connected to the vehicle body.

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