Driving structure and electric trolley

Abstract

The utility model discloses a driving structure and an electric trolley, the driving structure is used for driving a driving wheel to rotate, the driving structure is arranged in the driving wheel, and the driving structure comprises a driving motor; the first wheel carrier and the second wheel carrier are arranged in a butt joint mode, and the driving motor is arranged between the first wheel carrier and the second wheel carrier in a clamped mode. The first wheel carrier and the second wheel carrier are arranged in a butt joint mode, the driving motor is clamped between the first wheel carrier and the second wheel carrier, stable supporting and fixing can be provided for the driving motor, it is guaranteed that the driving motor is kept at the correct position in the working process, displacement or shaking caused by vibration, impact and other factors is avoided, and therefore normal operation and transmission efficiency of the driving motor are guaranteed; and the stability and reliability of the whole driving system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transportation devices, in particular to a driving structure and an electric trolley. BACKGROUND

[0002] At present, in various types of devices involving the rotation of driving wheels, such as electric trolleys, the design of the driving structure is crucial. From the perspective of installation space planning, the motor needs to be placed separately outside the main body of the device, which requires considering the size of the motor itself and reserving space for the wiring and other accessories of the motor. At the same time, in order to ensure that the motor does not interfere with other components during operation, the relative position of the motor and the surrounding structure needs to be accurately calculated and planned, which increases the difficulty and complexity of the overall structure design of the device.

[0003] At the same time, since the motor is exposed to the external environment, in order to ensure its normal operation and service life, a series of protective measures need to be taken. For example, in a dusty environment, a special dust cover needs to be provided for the motor to prevent dust from entering the motor and affecting its performance. The design and implementation of these protective measures undoubtedly increase the complexity and cost of setting up the driving motor.

[0004] In addition, in terms of installation and fixation of the driving motor, the traditional method is often complex, requiring a large number of screws and fasteners, which makes the installation and disassembly of the motor time-consuming and labor-intensive, causing great inconvenience to the maintenance and upgrading of the device. In actual use, once the driving motor fails, the maintenance personnel need to spend a long time on disassembly and replacement, which seriously affects the efficiency of the device. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a driving structure and an electric trolley to solve the technical problem of inconvenient installation and disassembly of the driving motor in the existing driving structure.

[0006] To achieve the above purpose, the technical solution adopted by the present application is to provide a driving structure for driving the rotation of a driving wheel, and the driving structure is placed in the driving wheel, comprising: a driving motor; a first wheel frame and a second wheel frame, the first wheel frame and the second wheel frame are arranged in abutment, and the driving motor is clamped between the first wheel frame and the second wheel frame.

[0007] As a preferred embodiment, the first wheel frame and the second wheel frame are respectively provided with a motor mounting position, and the driving motor is connected with the motor mounting position to realize the relative fixation of the driving motor and the first wheel frame and the second wheel frame.

[0008] As another preferred embodiment, the motor mounting position is arranged close to the edge of the first wheel frame and the second wheel frame.

[0009] Further preferably, the motor mounting position comprises: a first motor mounting slot and a second motor mounting slot, the first motor mounting slot is arranged on the first wheel frame and its opening faces the second wheel frame, correspondingly, the second motor mounting slot is arranged on the second wheel frame and its opening faces the first wheel frame; wherein the two ends of the driving motor are respectively embedded in the first motor mounting slot and the second motor mounting slot.

[0010] Further preferably, the first motor mounting slot is formed by extending from the side of the first wheel frame close to the second wheel frame towards the second wheel frame and protruding from the first wheel frame, and the second motor mounting slot is formed by extending from the side of the second wheel frame close to the first wheel frame towards the first wheel frame and protruding from the second wheel frame.

[0011] Preferably, the driving structure further comprises a gear transmission member and a connecting member, the gear transmission member is connected with the driving motor, the gear transmission member is clamped between the first wheel frame and the second wheel frame, one end of the connecting member is connected with the gear transmission member, and the other end of the connecting member is fixedly connected with the driving wheel through the central shaft hole of the second wheel frame.

[0012] Preferably, the central shaft hole extends towards the first wheel frame to form a circumferential wall, and the connecting member is accommodated in the circumferential wall.

[0013] Further preferably, the central shaft hole is arranged eccentrically relative to the axes of the first wheel frame and the second wheel frame.

[0014] Further preferably, the first wheel frame and the second wheel frame are connected relative to each other by being provided with a plurality of connecting rods.

[0015] Preferably, the present application also provides an electric trolley, comprising: a folding frame connected with a guide wheel and a driving wheel, and the driving wheel is provided with the driving structure of any one of the above.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The relatively closed environment inside the driving wheel can provide certain protection for the driving structure, reduce the erosion and interference of external dust, sundries, water vapor and the like on the driving motor and other components, reduce the probability of failure of the driving components due to external environmental factors, prolong the service life of the driving structure, and improve the reliability and stability of the equipment.

[0018] The first wheel frame and the second wheel frame are connected and clamp the drive motor in the middle. This provides stable support and fixation for the drive motor, ensuring that the drive motor stays in the correct position during operation and does not shift or shake due to vibration, impact or other factors. This ensures the normal operation and transmission efficiency of the drive motor and helps improve the stability and reliability of the entire drive system.

[0019] The docking clamping method makes the installation and removal of the drive motor relatively convenient. During installation, the drive motor can be placed in a suitable position first, and then the first wheel frame and the second wheel frame can be docked and fixed together; alternatively, one end of the drive motor can be docked to one side of the first wheel frame first, and then the second wheel frame can be docked to the first wheel frame, so that the drive motor is abutted and limited between the first wheel frame and the second wheel frame. Thus, when maintenance or replacement of the drive motor is required, the connection between the first wheel frame and the second wheel frame can be easily disconnected to remove the drive motor, reducing the difficulty of installation and maintenance, facilitating the disassembly and removal of the drive motor, and improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the driving structure;

[0021] Figure 2 A schematic diagram of the driving structure from the front view.

[0022] Figure 3 A schematic diagram of the driving structure from a side view.

[0023] Figure 4 This is a schematic diagram of the exploded structure of the driving structure;

[0024] Figure 5 This is a side view of the exploded view of the driving structure.

[0025] Figure 6 A schematic diagram of structural explosion from another perspective of the driving structure;

[0026] Figure 7 An exploded view of a structure with a drive mechanism assembled on the drive wheels;

[0027] Figure 8 This is a schematic diagram of the connection structure between the drive wheel and the mounting bracket.

[0028] In the diagram: 1. Drive structure; 2. Drive wheel; 3. Left wheel cover; 4. Right wheel cover; 5. Connecting shaft; 6. Assembly bracket; 10. Drive motor; 20. First wheel frame; 21. First motor mounting slot; 30. Second wheel frame; 31. Second motor mounting slot; 32. Central shaft hole; 33. Circumferential wall; 60. Gear transmission component; 70. Connecting component; 80. Connecting rod; 90. Central shaft. Detailed Implementation

[0029] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0031] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0033] In a preferred embodiment, see Figures 1 to 8 This application provides a drive structure 1 for driving a drive wheel 2 to rotate, and the drive structure 1 is placed inside the drive wheel 2. The drive structure 1 includes: a drive motor 10; a first wheel frame 20 and a second wheel frame 30, which are connected and disposed together, and the drive motor 10 is clamped between the first wheel frame 20 and the second wheel frame 30.

[0034] Among them, see Figure 7 and Figure 8In some preferred embodiments, the drive wheel 2 is composed of a left wheel cover 3 and a right wheel cover 4 assembled opposite each other. The drive wheel 2 has an internal installation space for the drive structure 1 described in this application. The first wheel frame 20 and the second wheel frame 30 are preferably disc structures to fit the shape of the drive wheel 2. The disc structure is a relatively universal shape, which can meet the installation and driving requirements of the drive wheel 2 in most cases, exhibiting high versatility and applicability. In other embodiments, depending on the specific application, the first wheel frame 20 and the second wheel frame 30 can also be polygonal or other irregular shapes to save costs to some extent. The relatively enclosed environment inside the drive wheel 2 provides a certain degree of protection for the drive structure 1, reducing the erosion and interference of external dust, debris, and moisture on components such as the drive motor 10, lowering the probability of drive component failure due to external environmental factors, extending the service life of the drive structure 1, and improving the reliability and stability of the equipment.

[0035] See Figure 1 and Figure 3 The first wheel frame 20 and the second wheel frame 30 are connected and clamp the drive motor 10 in the middle, which can provide stable support and fixation for the drive motor 10, ensuring that the drive motor 10 remains in the correct position during operation and will not shift or shake due to vibration, impact or other factors. This ensures the normal operation and transmission efficiency of the drive motor 10 and helps to improve the stability and reliability of the entire drive system.

[0036] The clamping method described in this application makes the installation and removal of the drive motor 10 relatively convenient. During installation, the drive motor 10 can be placed in a suitable position first, and then the first wheel frame 20 and the second wheel frame 30 can be docked and fixed. Alternatively, one end of the drive motor 10 can be docked to one side of the first wheel frame 20, and then the second wheel frame 30 can be docked to the first wheel frame 20, so that the drive motor 10 is positioned between the first wheel frame 20 and the second wheel frame 30. Therefore, when maintenance or replacement of the drive motor 10 is required, simply disconnecting the first wheel frame 20 and the second wheel frame 30 allows for easy removal of the drive motor 10, reducing the difficulty of installation and maintenance, facilitating the disassembly and removal of the drive motor 10, and improving work efficiency.

[0037] Furthermore, the first wheel frame 20 and the second wheel frame 30 clamp the drive motor 10 at both ends, which enables the force generated by the drive motor 10 to be evenly transmitted to the two wheel frames, and then to the drive wheel 2 more evenly. This avoids problems such as uneven force transmission and uneven wear of the drive wheel 2, which is conducive to improving the service life and operating performance of the drive wheel 2.

[0038] As a preferred embodiment, the first wheel frame 20 and the second wheel frame 30 are respectively provided with motor mounting positions, and the drive motor 10 is connected to the motor mounting positions to achieve relative fixation of the drive motor 10 and the second wheel frame 20 and the second wheel frame 30.

[0039] Specifically, setting a motor mounting position provides a precise installation location for the drive motor 10, ensuring that the drive motor 10 can be accurately placed between the first wheel frame 20 and the second wheel frame 30, and maintain a relatively fixed positional relationship with the wheel frames. This helps to ensure that the drive motor 10 does not shift or shake during operation, thereby making the operation of the entire drive system more stable and reliable.

[0040] As another preferred option, see Figure 2 and Figure 4 Based on a disc structure with the first wheel frame 20 and the second wheel frame 30 as a reference, the motor mounting position is set close to the edges of the first wheel frame 20 and the second wheel frame 30. Setting the motor mounting position close to the edges of the first wheel frame 20 and the second wheel frame 30 can make full use of the space at the edges of the wheel frames, making the internal space layout of the drive wheel 2 more reasonable. This design can leave more central space for other components, such as transmission components, which facilitates the overall structural design and layout, and improves the space utilization rate of the equipment.

[0041] Meanwhile, since the circumferential edges of the first wheel frame 20 and the second wheel frame 30 do not have any other components, the outer edge of the drive motor 10 located there will not be blocked by other components, and the area in contact with the air is relatively large. Therefore, setting the motor mounting position at the edge position is conducive to the heat dissipation of the drive motor 10. During the operation of the drive motor 10, the heat generated can be dissipated more quickly through the edge of the wheel frame, reducing the operating temperature of the motor and improving the efficiency and service life of the motor.

[0042] Specifically, see Figures 4 to 6 The motor mounting position includes a first motor mounting slot 21 and a second motor mounting slot 31. The first motor mounting slot 21 is disposed on the first wheel frame 20 and its opening faces the second wheel frame 30. Correspondingly, the second motor mounting slot 31 is disposed on the second wheel frame 30 and its opening faces the first wheel frame 20. The two ends of the drive motor 10 are respectively embedded in the first motor mounting slot 21 and the second motor mounting slot 31.

[0043] Furthermore, in this embodiment, the first motor mounting groove 21 extends from the side of the first wheel frame 20 near the second wheel frame 30 toward the second wheel frame 30 and protrudes from the first wheel frame 20. Correspondingly, the second motor mounting groove 31 extends from the side of the second wheel frame 30 near the first wheel frame 20 toward the first wheel frame 20 and protrudes from the second wheel frame 30. It is understood that in other embodiments, the first motor mounting groove 21 and the second motor mounting groove 31 may also be formed by recesses from the surfaces of the first wheel frame 20 and the second wheel frame 30, respectively, as long as their openings face each other.

[0044] The first motor mounting slot 21 and the second motor mounting slot 31 are respectively set on the first wheel frame 20 and the second wheel frame 30, and the two ends of the drive motor 10 are respectively embedded therein. This design can fix the motor from both ends. Compared with a single mounting slot or fixing point, it greatly enhances the fixing effect of the drive motor 10, so that the motor can remain stable when subjected to large torque and vibration, effectively preventing the motor from axial or radial displacement during operation, and improving the reliability and stability of the drive system.

[0045] The first motor mounting slot 21 and the second motor mounting slot 31 can respectively share the force generated by the drive motor 10 during operation. When the drive motor 10 outputs power, the force generated at both ends will be transmitted to the first wheel frame 20 and the second wheel frame 30 through the mounting slots respectively, so that the two wheel frames share the force of the motor, avoiding deformation or damage that may be caused by a single wheel frame bearing too much force. At the same time, the cooperation and fixation between the first motor mounting slot 21 and the second motor mounting slot 31 prevents the drive motor 10 from shifting position during operation, extending the service life of the wheel frame and the entire drive structure 1.

[0046] During installation, the two ends of the drive motor 10 are accurately embedded into the corresponding mounting slots to achieve precise alignment between the motor and the wheel frame. No additional alignment tools or complex adjustment process are required, which improves installation efficiency and alignment accuracy. This helps to ensure the coaxiality between the drive motor 10 and the drive wheel 2. Furthermore, the design of the two mounting slots provides a clear alignment reference for the installation of the drive motor 10, reducing vibration and noise caused by misalignment and improving the operating quality of the drive system.

[0047] Preferred, see also Figures 4 to 6The drive structure 1 also includes a gear transmission component 60. The input end of the gear transmission component 60 is connected to the drive motor 10, and the gear transmission component 60 is clamped between the first wheel frame 20 and the second wheel frame 30. Clamping the gear transmission component 60 between the first wheel frame 20 and the second wheel frame 30, and integrating it with the drive motor 10 into a relatively compact space, fully utilizes the internal space of the drive wheel 2, making the overall layout of the drive structure 1 more compact. Furthermore, the first wheel frame 20 and the second wheel frame 30 provide a stable mounting platform for the gear transmission component 60. During installation, it is only necessary to accurately install the gear transmission component 60 between the two wheel frames and connect it to the drive motor 10 and other related components; the installation and disassembly process is relatively simple. Simultaneously, the gear transmission component 60, clamped between the first wheel frame 20 and the second wheel frame 30, forms a relatively stable overall structure with the two wheel frames. During the power transmission process, the force on the gear transmission component 60 can be effectively distributed and transmitted through the wheel frames.

[0048] Preferred, see Figure 6 and Figure 7 The drive structure 1 also includes a connector 70. One end of the connector 70 is connected to the gear transmission component 60, and the other end of the connector 70 is fixedly connected to the drive wheel 2 through the central shaft hole 32 opened in the second wheel frame 30. At the same time, a central shaft 90 is provided along the axial direction of the central shaft hole 32, passing through the gear transmission component 60 to ensure the stable operation of the gear transmission component 60. One end of the connector 70 is connected to the gear transmission component 60, and the other end is fixedly connected to the drive wheel 2, which can reliably transmit the power transmitted by the gear transmission component 60 to the drive wheel 2, ensuring that the drive wheel 2 can rotate according to the design requirements, so that the entire drive system can work normally, and ensuring the stability and accuracy of power transmission between the drive structure 1 and the drive wheel 2.

[0049] Preferably, the central shaft hole 32 extends toward the first wheel frame 20 to form a circumferential wall 33, within which the connector 70 is accommodated. The circumferential wall 33 can house the connector 70, protecting it from external environmental factors such as dust and moisture, reducing performance degradation caused by corrosion and wear, and improving the service life and operational reliability of the connector 70.

[0050] The circumferential wall 33 and the connector 70 form a nested fit structure, which can enhance the connection strength between the second wheel frame 30 and the connector 70, make the force on the entire drive structure 1 more uniform and reasonable in the axial direction, further improve the integrity and stability of the drive structure 1, and help improve the drive structure 1's ability to resist external forces and deformation.

[0051] Further preferred, the central shaft hole 32 is eccentrically set relative to the axes of the first wheel frame 20 and the second wheel frame 30 to reduce production costs. At the same time, since the eccentrically set central shaft hole 32 has little impact on the other parts in the wheel frame, different specifications and types of gear transmission components 60 can be added or replaced as needed to meet different transmission ratios and performance requirements.

[0052] Specifically, the eccentric setting of the central shaft hole 32 can change the force distribution of the drive wheel 2 during rotation. According to the specific usage scenario and force requirements, by reasonably designing the eccentricity, the force borne by the drive wheel 2 can be more evenly distributed on the first wheel frame 20, the second wheel frame 30 and other components of the drive structure 1, avoiding excessive local stress, thereby improving the load-bearing capacity and service life of the entire drive structure 1.

[0053] In certain application scenarios, the drive wheel 2 needs to achieve some special motion trajectories or motion characteristics. The eccentric setting of the central shaft hole 32 can provide the drive wheel 2 with additional motion freedom. Through cooperation with other components, the drive wheel 2 can achieve special motion forms such as eccentric swing and elliptical motion, meet the requirements of certain application scenarios, and expand the application range of the drive structure 1.

[0054] To elaborate further, see Figure 4 The first wheel frame 20 and the second wheel frame 30 are connected by multiple connecting rods 80. The connecting rods 80 are evenly distributed around the circumference of the disc-shaped first wheel frame 20 and the second wheel frame 30, and preferably, two connecting rods 80 are arranged as a group, with three groups of connecting rods 80 arranged around the circumference of the first wheel frame 20 and the second wheel frame 30 to ensure the stability of the docking between the first wheel frame 20 and the second wheel frame 30.

[0055] Furthermore, see the following in this application document: Figure 6 and Figure 7 The connector 70 is provided with a connecting groove, which is used to cooperate with the connecting shaft 5 on the right wheel cover 4 to realize the connection between the drive structure 1 and the right wheel cover 4. Preferably, the connecting groove and the connecting shaft 5 in this solution are both set as flower pattern.

[0056] A connecting groove is provided on the connector 70, and a connecting shaft 5 is provided on the right wheel cover 4. The two work together to achieve a firm connection between the drive structure 1 and the right wheel cover 4. This connection method can effectively transmit torque and power, ensuring that there will be no relative slippage or separation between the drive structure 1 and the right wheel cover 4 during the rotation of the drive wheel 2, thus ensuring the normal operation of the entire drive system.

[0057] Both the connecting groove and the connecting shaft 5 are made into a flower shape. The flower shape increases the contact area of ​​the connecting parts, so that the torque can be transmitted more evenly. Compared with ordinary round or square connections, the flower-shaped connection can withstand greater torque, reduce the risk of component damage caused by torque concentration, improve the efficiency of power transmission, and enable the power of the drive motor 10 to be transmitted to the right wheel cover 4 more effectively, driving the drive wheel 2 to rotate.

[0058] The flower-shaped connecting groove and connecting shaft 5 have a certain guiding function. During the installation process, the operator can more easily align the connecting shaft 5 with the connecting groove and insert it, which reduces the installation difficulty and improves the installation efficiency. At the same time, when maintenance or replacement of parts is required, the flower-shaped connection is also easy to disassemble. Only a certain axial force needs to be applied to pull the connecting shaft 5 out of the connecting groove, which reduces maintenance time and cost.

[0059] The floral-patterned connection used in this application can, to some extent, compensate for installation errors between the connector 70 and the right wheel cover 4. Because the floral structure has multiple protrusions and grooves, even if there are certain angular or positional deviations during installation, the floral-patterned connection can be fine-tuned through its structural characteristics, allowing the connecting shaft 5 to better fit with the connecting groove, thus ensuring the reliability and stability of the connection.

[0060] Preferably, this application also provides an electric handcart, including: a folding frame, the folding frame being connected to guide wheels and drive wheels 2, and the drive wheels 2 having a drive structure 1 of any of the above-mentioned features. Specifically, see [link to relevant documentation]. Figure 8 The drive wheel 2 is connected to the folding frame via an external mounting bracket 6 to ensure the overall stability of the electric handcart to a certain extent.

[0061] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A driving structure, characterized in that, The drive structure is used to drive the drive wheel to rotate, and the drive structure is located inside the drive wheel. The drive structure includes: Drive motor; A first wheel frame and a second wheel frame are connected together, and the drive motor is clamped between the first wheel frame and the second wheel frame.

2. The driving structure as described in claim 1, characterized in that, The first wheel frame and the second wheel frame are respectively provided with motor mounting positions, and the drive motor is connected to the motor mounting positions to achieve relative fixation of the drive motor and the first wheel frame and the second wheel frame.

3. The driving structure as described in claim 2, characterized in that, The motor mounting position is located near the edges of the first wheel frame and the second wheel frame.

4. The driving structure as described in claim 2, characterized in that, The motor mounting position includes: A first motor mounting slot and a second motor mounting slot are provided. The first motor mounting slot is disposed on the first wheel frame and the opening of the first motor mounting slot faces the second wheel frame. Correspondingly, the second motor mounting slot is disposed on the second wheel frame and the opening of the second motor mounting slot faces the first wheel frame. The two ends of the drive motor are respectively embedded in the first motor mounting slot and the second motor mounting slot.

5. The driving structure as described in claim 4, characterized in that, The first motor mounting slot extends from the side of the first wheel frame near the second wheel frame toward the second wheel frame and protrudes from the first wheel frame. The second motor mounting slot extends from the side of the second wheel frame near the first wheel frame toward the first wheel frame and protrudes from the second wheel frame.

6. The driving structure as described in claim 2, characterized in that, The drive structure also includes a gear transmission component and a connecting component. The gear transmission component is connected to the drive motor and is sandwiched between the first wheel frame and the second wheel frame. One end of the connecting component is connected to the gear transmission component, and the other end of the connecting component is fixedly connected to the drive wheel through the central shaft hole opened in the second wheel frame.

7. The driving structure as described in claim 6, characterized in that, The central shaft hole extends toward the first wheel frame to form a circumferential wall, and the connector is accommodated within the circumferential wall.

8. The driving structure as described in claim 6, characterized in that, The central shaft hole is eccentrically positioned relative to the axes of the first wheel frame and the second wheel frame.

9. The driving structure according to any one of claims 1-8, characterized in that, The first wheel frame and the second wheel frame are connected by multiple connecting rods.

10. An electric handcart, characterized in that, include: A folding frame, wherein the folding frame is connected to a guide wheel and a drive wheel, and the drive wheel is provided with a drive structure as described in any one of claims 1-9.

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