Linear double-end driving device and clothes airing machine

Abstract

The application discloses a linear double-head driving device and a clothes airing machine. A driving unit comprises a driving shaft, driving parts arranged at two ends of the driving shaft respectively, a first execution unit comprising a first execution shell and a first execution member installed in the first execution shell, a support bearing installed on the first execution shell, one of the driving parts penetrating through the support bearing and extending into the corresponding first execution shell to be in transmission connection with the first execution member, a second execution unit comprising a second execution shell and a second execution member installed in the second execution shell, a universal ball shaft sleeve installed on the second execution shell, and the other driving part penetrating through the universal ball shaft sleeve and extending into the corresponding second execution shell to be in transmission connection with the second execution member. The universal ball shaft sleeve can smoothly penetrate the driving shaft and stably support the driving shaft through self-adjustment, reduces the machining precision requirement of the two-end execution shells, simultaneously reduces the assembly difficulty, and improves the assembly efficiency.

Description

Technical Field

[0001] This application relates to the technical field of power output devices, and more particularly to a linear dual-head drive device and a clothes drying rack. Background Technology

[0002] In the core drive components of an electric clothes drying rack, the dual-head drive motor plays a crucial role. As the key power source for the stable winding and unwinding of the steel wire rope and the precise control of the clothes rack's lifting and lowering, its performance directly affects the overall operation of the electric clothes drying rack. Currently, the widely used dual-head drive motor structure in electric clothes drying racks has ball bearings installed at the steel wire rope seats at both ends of the motor. Specifically, the output shaft of the middle motor passes through these two ball bearings at both ends. Through the support and guidance of the ball bearings, the output shaft can maintain a relatively stable axial and radial position during rotation, reducing energy loss caused by friction and vibration, thereby improving the motor's transmission efficiency and service life.

[0003] However, the existing dual-drive motor structure has revealed several problems in actual production and application, the most prominent being assembly difficulties. Specifically, the integrated output shaft requires extremely high coaxiality at both ends of the ball bearings to ensure smooth passage and normal rotation. To meet this high coaxiality requirement, high-precision machining equipment and processes are needed to precisely machine the ball bearing mounting holes on the motor output shaft and wire rope seat. This not only increases the cost of machining equipment but also places extremely high demands on the skills of the operators. Furthermore, during assembly, specialized testing tools and methods are required to repeatedly test and adjust the coaxiality of the ball bearings to ensure design requirements are met. This undoubtedly extends the assembly cycle and reduces production efficiency. Therefore, the existing dual-drive motor structure for electric clothes drying racks suffers from high production difficulty, high processing costs, and low assembly efficiency, severely hindering the high-quality development of the electric clothes drying rack industry. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a linear dual-head drive device and a clothes drying rack, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a linear dual-head drive device is provided, comprising:

[0007] A drive unit includes a drive shaft, with drive units disposed at both ends of the drive shaft;

[0008] The first execution unit includes a first execution housing and a first execution component installed inside the first execution housing. The first execution housing is equipped with a support bearing. One of the drive units passes through the support bearing and extends into the corresponding first execution housing, drivingly connecting to the first execution component.

[0009] The second execution unit includes a second execution housing and a second execution component installed inside the second execution housing. The second execution housing is equipped with a universal ball bushing, and another drive unit passes through the universal ball bushing and extends into the corresponding second execution housing to drively connect the second execution component.

[0010] Optionally, the second execution unit further includes a pressure ring installed on the first execution housing. The pressure ring has a first conical mounting hole, and the second execution housing has a second conical mounting hole. The flared sides of the first conical mounting hole and the second conical mounting hole face each other. The universal ball bushing is confined within the first conical mounting hole and the second conical mounting hole.

[0011] Optionally, the pressure ring includes a fixed outer ring and a tapered inner ring connected to the inner circumference of the fixed outer ring, the first tapered mounting hole is formed in the tapered inner ring, and the fixed outer ring is fixedly connected to the second actuator housing.

[0012] Optionally, a clamping ring is fixedly provided on one side of the second actuator housing, surrounding the second tapered mounting hole, and the fixed outer ring is interference-fitted into the clamping ring to achieve fixed installation of the fixed outer ring.

[0013] Optionally, the drive unit includes a drive housing and a drive body installed inside the drive housing, the drive body including the drive shaft; the first execution housing and the second execution housing are respectively connected and locked to both ends of the drive housing.

[0014] Optionally, the drive housing includes a cylindrical housing body and a bearing cover mounted on one end of the housing body, and the support bearing is constrained between the bearing cover and the first actuator housing.

[0015] Optionally, at least one of the bearing cover and the first actuator housing is provided with a bearing mounting groove, and the support bearing is installed in the bearing mounting groove, such that the bearing cover and the first actuator housing abut against each other.

[0016] Optionally, the first execution unit further includes a first transmission member disposed within the first execution housing, and the drive unit is driven to the first execution unit via the first transmission member; the second execution unit further includes a second transmission member disposed within the second execution housing, and the drive unit is driven to the second execution unit via the second transmission member.

[0017] Optionally, the first actuator and the second actuator each include a rope winding wheel, the rope winding wheel is provided with a rope winding groove, and a traction rope is wound on the rope winding wheel along the rope winding groove; wherein, the first actuator housing and the second actuator housing are respectively provided with anti-detachment rollers parallel to the axial direction of the rope winding wheel, and the anti-detachment rollers prevent the traction rope from jumping off the rope winding groove.

[0018] On the other hand, a clothes drying rack is provided, including the aforementioned linear dual-head drive device.

[0019] The beneficial effects of this application are as follows: In the linear dual-head drive device structure provided by this solution, the second execution unit adopts a universal ball bushing. The multi-degree-of-freedom adaptive adjustment characteristics of the universal ball bushing allow the drive shaft to pass smoothly and achieve stable support during assembly, even if there are certain machining errors in the execution housings at both ends. Therefore, it greatly reduces the machining accuracy requirements of the execution housings at both ends, reduces the investment in machining equipment and the complexity of machining processes, thereby reducing production costs. At the same time, the adaptive adjustment function of the universal ball bushing allows the drive shaft to pass through the universal ball bushing more easily and connect with other components during assembly, reducing debugging steps in the assembly process, reducing assembly difficulty, improving assembly efficiency, and facilitating large-scale production. In addition, while simplifying machining and assembly difficulty, the drive shaft is stably supported at one end by a support bearing and at the other end by a universal ball bushing. This dual-support structure ensures high stability of the drive shaft during rotation, reduces vibration and sway of the drive shaft, thereby improving the operational stability of the entire linear dual-head drive device and extending the service life of the device. Attached Figure Description

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the linear dual-head drive device described in the embodiments of this application;

[0022] Figure 2 This is an exploded view of the linear dual-head drive device described in the embodiments of this application;

[0023] Figure 3 for Figure 2 A structural schematic diagram from another perspective of the structure shown;

[0024] Figure 4 This is a cross-sectional view of the linear dual-head drive device described in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the installation structure of the universal ball bushing described in an embodiment of this application;

[0026] Figure 6 for Figure 5 A partial sectional view of the structure shown;

[0027] Figure 7 for Figure 5 An exploded view of the structure shown.

[0028] Figure 8 This is an exploded view of the mounting structure of the support bearing described in the embodiments of this application;

[0029] Figure 9 This is an exploded view of the driving unit described in an embodiment of this application.

[0030] In the picture:

[0031] 1. Drive unit; 11. Drive housing; 111. Housing body; 112. Bearing cover; 12. Drive body; 121. Drive shaft; 1211. Drive unit; 2. First execution unit; 21. First execution housing; 22. First execution component; 23. First transmission component; 24. Support bearing; 25. Anti-detachment roller; 3. Second execution unit; 31. Second execution housing; 311. Second tapered mounting hole; 312. Clamping ring; 32. Second execution component; 33. Second transmission component; 34. Universal ball bushing; 35. Anti-detachment roller; 36. Pressure ring; 361. Fixed outer ring; 362. Tapered inner ring. Detailed Implementation

[0032] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the core drive components of an electric clothes drying rack, the dual-head drive motor plays a crucial role. As the key power source for the stable winding and unwinding of the steel wire rope and the precise control of the clothes rack's lifting and lowering, its performance directly affects the overall operation of the electric clothes drying rack. Currently, the widely used dual-head drive motor structure in electric clothes drying racks has ball bearings installed at the steel wire rope seats at both ends of the motor. Specifically, the output shaft of the middle motor passes through these two ball bearings at both ends. Through the support and guidance of the ball bearings, the output shaft can maintain a relatively stable axial and radial position during rotation, reducing energy loss caused by friction and vibration, thereby improving the motor's transmission efficiency and service life.

[0036] However, the existing dual-drive motor structure has revealed several problems in actual production and application, the most prominent being assembly difficulties. Specifically, the integrated output shaft requires extremely high coaxiality at both ends of the ball bearings to ensure smooth passage and normal rotation. To meet this high coaxiality requirement, high-precision machining equipment and processes are needed to precisely machine the ball bearing mounting holes on the motor output shaft and wire rope seat. This not only increases the cost of machining equipment but also places extremely high demands on the skills of the operators. Furthermore, during assembly, specialized testing tools and methods are required to repeatedly test and adjust the coaxiality of the ball bearings to ensure design requirements are met. This undoubtedly extends the assembly cycle and reduces production efficiency. Therefore, the existing dual-drive motor structure for electric clothes drying racks suffers from high production difficulty, high processing costs, and low assembly efficiency, severely hindering the high-quality development of the electric clothes drying rack industry.

[0037] To overcome the above technical problems, refer to Figures 1-4 This application provides a linear dual-head drive device, comprising:

[0038] The drive unit 1 includes a drive shaft 121, and drive parts 1211 are respectively provided at both ends of the drive shaft 121;

[0039] The first execution unit 2 includes a first execution housing 21 and a first execution member 22 installed inside the first execution housing 21. The first execution housing 21 is equipped with a support bearing 24. A drive unit 1211 passes through the support bearing 24 and extends into the corresponding first execution housing 21 to drive the first execution member 22.

[0040] The second execution unit 3 includes a second execution housing 31 and a second execution member 32 installed inside the second execution housing 31. The second execution housing 31 is equipped with a universal ball bushing 34. Another drive unit 1211 passes through the universal ball bushing 34 and extends into the corresponding second execution housing 31 to drive the second execution member 32.

[0041] Among them, the linear dual-head drive device can be used in various devices that require dual-head power output, such as electric clothes drying racks.

[0042] In this embodiment, the drive shaft 121 of the drive unit 1 begins to rotate under the drive of a power source (such as a motor). Since drive units 1211 are respectively provided at both ends of the drive shaft 121, and the two drive units 1211 are respectively connected to the first actuator 22 of the first actuator unit 2 and the second actuator 32 of the second actuator unit 3, the rotation of the drive shaft 121 will synchronously transmit power to the first actuator 22 and the second actuator 32 through the drive units 1211, achieving the effect of dual-head drive. For example, when applied in a clothes drying rack, the first actuator 22 and the second actuator 32 are respectively rope winding wheels. By driving the rope winding wheels to wind the wire rope, the height of the suspended clothes rack can be controlled, realizing the function of electrically driving the clothes rack to lift and lower.

[0043] In the first actuator unit 2, the support bearing 24 provides stable support for one end of the drive shaft 121, ensuring high stability and low frictional resistance when the drive shaft 121 rotates on this side. In the second actuator unit 3, the universal ball bushing 34 (i.e., a spherical bushing, such as a ball cup bushing) plays a crucial role. The universal ball bushing 34 has multi-degree-of-freedom adaptive adjustment characteristics. During assembly, when the other end of the drive shaft 121 passes through the universal ball bushing 34, the universal ball bushing 34 can adaptively adjust according to the actual position and angle of the drive shaft 121, allowing the drive shaft 121 to pass through easily without requiring extremely high machining precision from the actuator housings at both ends, as is the case with traditional structures. During operation, the universal ball bushing 34 also provides effective support for the drive shaft 121, ensuring its stable rotation.

[0044] In summary, in this embodiment, the second execution unit 3 employs a universal ball bushing 34. The multi-degree-of-freedom adaptive adjustment characteristics of the universal ball bushing 34 allow the drive shaft 121 to pass smoothly and achieve stable support during assembly, even if there are certain machining errors in the execution housings at both ends. Therefore, this significantly reduces the machining accuracy requirements of the execution housings at both ends, reduces the investment in machining equipment and the complexity of the machining process, thereby lowering production costs. Simultaneously, the adaptive adjustment function of the universal ball bushing 34 allows the drive shaft 121 to pass through the universal ball bushing 34 more easily and connect with other components during assembly, reducing debugging steps, lowering assembly difficulty, and improving assembly efficiency, which is beneficial for large-scale production. Furthermore, while simplifying machining and assembly, the drive shaft 121 is stably supported at one end by a support bearing 24 and at the other end by the universal ball bushing 34. This dual-support structure ensures high stability of the drive shaft 121 during rotation, reducing vibration and sway, thereby improving the overall operational stability of the linear dual-head drive device and extending its service life.

[0045] In one embodiment, reference is made to Figures 5-7 The second execution unit 3 further includes a pressure ring 36 installed on the first execution housing 21. The pressure ring 36 is provided with a first conical mounting hole, and the second execution housing 31 is provided with a second conical mounting hole 311. The flared sides of the first conical mounting hole and the second conical mounting hole 311 are arranged facing each other. The universal ball bushing 34 is confined within the first conical mounting hole and the second conical mounting hole 311.

[0046] The first and second tapered mounting holes 311 are arranged facing each other, forming a structure similar to a tapered sleeve to accommodate the universal ball bushing 34. Due to the characteristics of the tapered holes, there is a certain angular relationship between the inner wall of the tapered holes and the outer surface of the universal ball bushing 34. When the universal ball bushing 34 is installed between these two tapered mounting holes, the inner wall of the tapered holes will generate a radial constraint force on the universal ball bushing 34, preventing the universal ball bushing 34 from undergoing radial and circumferential displacement during the operation of the device, while also meeting the requirement that the universal ball bushing 34 can adaptively rotate and adjust according to the actual position and angle of the drive shaft 121.

[0047] With the dual constraint of the first tapered mounting hole and the second tapered mounting hole 311 on the universal ball bushing 34, the installation of the universal ball bushing 34 in the device is more stable and reliable. During the operation of the device, even if subjected to external forces such as vibration and impact, the universal ball bushing 34 is not easy to loosen or shift, thereby ensuring the support stability of the drive shaft 121, reducing problems such as shaking and vibration of the drive shaft 121 caused by unstable installation of the universal ball bushing 34, and improving the smooth operation of the entire linear dual-head drive device.

[0048] In this embodiment, the tapered mounting hole design provides guidance and positioning for the installation of the universal ball bushing 34. During assembly, operators can more easily and accurately install the universal ball bushing 34 between the first tapered mounting hole and the second tapered mounting hole 311, reducing assembly difficulty and errors. Furthermore, if the universal ball bushing 34 wears or is damaged during use and needs replacement, since it is installed through the first tapered mounting hole of the pressure ring 36 and the second tapered mounting hole 311 of the second actuator housing 31, this structure makes disassembly and installation of the universal ball bushing 34 relatively easy. Operators only need to remove the pressure ring 36 to remove the universal ball bushing 34 from the second tapered mounting hole 311 and then install a new universal ball bushing 34, greatly shortening maintenance and replacement time, reducing maintenance costs, and improving the maintainability of the device.

[0049] In one embodiment, reference is made to Figures 6-7 The pressure ring 36 includes a fixed outer ring 361 and a tapered inner ring 362 connected to the inner circumference of the fixed outer ring 361. The first tapered mounting hole is formed in the tapered inner ring 362, and the fixed outer ring 361 is fixedly connected to the second actuator housing 31.

[0050] The outer ring 361 is responsible for the fixed connection with the second actuator housing 31. This connection method securely mounts the pressure ring 36 in the corresponding position of the device, providing a foundation for the stable operation of the entire structure. Optional fixing methods include, but are not limited to, screw locking, welding, and interference fit fixing. The first tapered mounting hole is formed in the tapered inner ring 362. This design allows the tapered mounting hole to accurately position and constrain the universal ball bushing 34.

[0051] Preferably, the entire pressure ring 36 is an integral structure.

[0052] In one embodiment, a clamping ring 312 surrounding the second tapered mounting hole 311 is fixedly provided on one side of the second execution housing 31, and the fixed outer ring 361 is interference-fitted into the clamping ring 312 to achieve the fixed installation of the fixed outer ring 361.

[0053] An interference fit is an assembly method that relies on the interference between parts to achieve a tight connection. In this embodiment, the outer diameter of the fixed outer ring 361 is designed to be slightly larger than the inner diameter of the clamping ring 312. When the fixed outer ring 361 is forcibly pressed into the clamping ring 312, the clamping ring 312 will undergo elastic deformation, generating a large radial clamping force on the fixed outer ring 361. This clamping force can effectively prevent the fixed outer ring 361 from loosening or rotating relative to each other during the operation of the device, thereby ensuring a stable connection between the pressure ring 36 and the second actuator housing 31.

[0054] The interference fit installation method creates a tight mechanical connection between the fixed outer ring 361 and the clamping ring 312. Compared with other common connection methods (such as threaded connections and snap-fit ​​connections), the interference fit has higher connection strength and stability. During long-term operation of the device, even under external forces such as vibration and impact, the fixed outer ring 361 is not easy to loosen or fall off, thus ensuring the stable operation of components such as the pressure ring 36 and the universal ball bushing 34. This reduces failures and damage caused by loose connections, improves the reliability and service life of the device, and eliminates the need for additional connecting parts (such as bolts and nuts), simplifying the structure of the device. This not only reduces the number of parts but also lowers production costs.

[0055] In one embodiment, reference is made to Figure 4 and Figure 9 The drive unit 1 includes a drive housing 11 and a drive body 12 installed inside the drive housing 11. The drive body 12 includes the drive shaft 121. The first execution housing 21 and the second execution housing 31 are respectively connected and locked to both ends of the drive housing 11.

[0056] The drive unit 1 is specifically configured according to the specific power form. For example, when the drive unit 1 is a motor, the drive body 12 is a rotor structure, and the drive housing 11 is a stator structure that protects the rotor structure.

[0057] The first actuator housing 21 and the second actuator housing 31 are respectively connected and locked to both ends of the drive housing 11. This integral connection structure makes the various parts of the device form an organic whole, enhancing the overall rigidity and stability of the device. Specifically, the first actuator housing 21 and the second actuator housing 31 are connected and locked to both ends of the drive housing 11, forming a continuous force transmission path. The power of the drive shaft 121 is first transmitted to the first actuator 22 and the second actuator 32 connected to it. At the same time, the reaction force generated during operation and the external force on the device are also transmitted to the drive housing 11 through the actuator housing, and then the drive housing 11 disperses and bears the force, ensuring the structural stability and force balance of the entire device during operation.

[0058] In one embodiment, reference is made to Figure 8 The drive housing 11 includes a cylindrical housing body 111 and a bearing cover 112 mounted on one end of the housing body 111. The support bearing 24 is constrained between the bearing cover 112 and the first actuation housing 21.

[0059] In this embodiment, the split-type drive housing 11 design simplifies the assembly process. Operators can first install the support bearing 24 on the bearing cover 112, then connect the first actuator housing 21 to the housing body 111, gradually completing the assembly of each component. This step-by-step assembly method reduces assembly difficulty and improves assembly efficiency. The precise restraint of the support bearing 24 by the bearing cover 112 and the first actuator housing 21 provides a stable and reliable support environment for the drive shaft 121. During device operation, the drive shaft 121 can rotate smoothly within the support bearing 24, reducing vibration and noise problems caused by bearing loosening or positional misalignment, improving the operating accuracy and stability of the drive shaft 121, and thus ensuring the overall performance of the linear dual-head drive device.

[0060] In one embodiment, at least one of the bearing cover 112 and the first actuator housing 21 is provided with a bearing mounting groove, and the support bearing 24 is installed in the bearing mounting groove, such that the bearing cover 112 and the first actuator housing 21 abut against each other.

[0061] The bearing mounting groove provides a precise installation position for the support bearing 24. Whether the mounting groove is set on the bearing cover 112 or the first actuator housing 21, the size and shape of the groove are carefully designed according to the outer diameter, width and other parameters of the support bearing 24. When the support bearing 24 is installed in the mounting groove, the side wall of the mounting groove can radially position the support bearing 24 to prevent it from shifting in the radial direction. At the same time, the bottom or end face of the mounting groove can axially position the support bearing 24 to limit its movement in the axial direction. This precise positioning ensures the correct installation position of the support bearing 24 in the drive housing 11, providing a foundation for the stable operation of the drive shaft 121.

[0062] The bearing mounting slot makes the assembly process of the support bearing 24 simpler and more accurate. When assembling, the operator only needs to put the support bearing 24 into the mounting slot and then align the bearing cover 112 with the first actuator housing 21 to complete the initial installation of the support bearing 24. This design reduces the adjustment steps in the assembly process, lowers the assembly difficulty, and improves the assembly accuracy and efficiency.

[0063] In one embodiment, the first execution unit 2 further includes a first transmission member 23 disposed within the first execution housing 21, and the drive unit 1211 is connected to the first execution member 22 via the first transmission member 23; the second execution unit 3 further includes a second transmission member 33 disposed within the second execution housing 31, and the drive unit 1211 is connected to the second execution member 32 via the second transmission member 33.

[0064] Specifically, by setting up the first transmission component 23 and the second transmission component 33, the type and structure of the transmission components can be flexibly selected and designed according to different working requirements and application scenarios. For example, under different load conditions, transmission components with different transmission ratios can be selected to adjust the movement speed and torque of the first actuator 22 and the second actuator 32; according to the requirements of spatial layout, transmission components with appropriate shapes and sizes can be selected to achieve power transmission. This flexibility enables the device to adapt to a wider range of working environments and tasks, improving the device's versatility and practicality.

[0065] In one embodiment, reference is made to Figure 3 The first actuator 22 and the second actuator 32 each include a rope winding wheel, the rope winding wheel is provided with a rope winding groove, and a traction rope is wound on the rope winding wheel along the rope winding groove; wherein, the first actuator housing 21 and the second actuator housing 31 are also respectively provided with anti-detachment rollers 35 (25) parallel to the axial direction of the rope winding wheel, and the anti-detachment rollers 35 (25) restrict the traction rope from jumping off the rope winding groove.

[0066] Specifically, this embodiment uses a structure of a rope wheel and a traction rope to achieve a suspension traction function, such as for lifting and lowering a clothes drying rack in a clothes drying machine.

[0067] As a key component for power transmission and motion conversion, the rope winding wheel rotates under the action of driving force, and the traction rope wound on the rope groove moves with the movement of the rope winding wheel. Since the rope groove guides and constrains the traction rope, the traction rope can extend or move along a specific path, thereby realizing the conversion of the rotational motion of the rope winding wheel into the linear motion of the traction rope, or using the linear pull of the traction rope to make the rope winding wheel rotate, thus completing the power transmission and motion conversion. The anti-detachment roller 35 (25) is set parallel to the axial direction of the rope winding wheel and its position is close to the rope groove. When the rope winding wheel rotates and drives the traction rope to move, the anti-detachment roller 35 (25) plays a blocking and limiting role. If the traction rope tends to jump off the rope groove during the movement due to various reasons (such as sudden load change, uneven winding, etc.), the anti-detachment roller 35 (25) will prevent it from jumping off the rope groove, avoiding problems such as transmission interruption and motion loss caused by the traction rope jumping off. Among them, the surface of the anti-detachment roller 35 (25) usually has a certain degree of smoothness to reduce the friction between it and the traction rope, avoid the normal movement of the traction rope due to excessive friction, and at the same time provide sufficient blocking force to prevent detachment.

[0068] On the other hand, this embodiment also provides a clothes drying rack, including the above-mentioned linear dual-head drive device.

[0069] The clothes drying rack in this embodiment includes a main unit and a clothes drying rod (clothes rack). The main unit is equipped with a linear double-head drive device. Two traction ropes in the device extend downward and connect to both ends of the clothes drying rod. By synchronously winding the two traction ropes, the function of driving the clothes drying rod to rise and fall is realized.

[0070] Similarly, based on the linear dual-head drive device of this embodiment, the clothes drying machine of this embodiment has the advantages of low processing precision requirements for components (linear dual-head drive device) and low assembly difficulty.

[0071] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0072] In the description of this specification, references to terms such as "an embodiment," "example," 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, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0073] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0074] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A linear dual-head drive device, characterized in that, include: A drive unit includes a drive shaft, with drive units disposed at both ends of the drive shaft; The first execution unit includes a first execution housing and a first execution component installed inside the first execution housing. The first execution housing is equipped with a support bearing. One of the drive units passes through the support bearing and extends into the corresponding first execution housing, drivingly connecting to the first execution component. The second execution unit includes a second execution housing and a second execution component installed inside the second execution housing. The second execution housing is equipped with a universal ball bushing, and another drive unit passes through the universal ball bushing and extends into the corresponding second execution housing to drively connect the second execution component.

2. The linear dual-head drive device according to claim 1, characterized in that, The second execution unit further includes a pressure ring installed on the first execution housing. The pressure ring has a first conical mounting hole, and the second execution housing has a second conical mounting hole. The flared sides of the first conical mounting hole and the second conical mounting hole face each other. The universal ball bushing is confined within the first conical mounting hole and the second conical mounting hole.

3. The linear dual-head drive device according to claim 2, characterized in that, The pressure ring includes a fixed outer ring and a tapered inner ring connected to the inner circumference of the fixed outer ring. The first tapered mounting hole is formed in the tapered inner ring, and the fixed outer ring is fixedly connected to the second actuator housing.

4. The linear dual-head drive device according to claim 3, characterized in that, A clamping ring is fixedly provided on one side of the second actuator housing, surrounding the second tapered mounting hole. The fixed outer ring is interference-fitted into the clamping ring to achieve fixed installation of the fixed outer ring.

5. The linear dual-head drive device according to claim 1, characterized in that, The drive unit includes a drive housing and a drive body installed inside the drive housing. The drive body includes the drive shaft. The first execution housing and the second execution housing are respectively connected to and locked to both ends of the drive housing.

6. The linear dual-head drive device according to claim 5, characterized in that, The drive housing includes a cylindrical housing body and a bearing cover mounted on one end of the housing body, and the support bearing is constrained between the bearing cover and the first actuator housing.

7. The linear dual-head drive device according to claim 6, characterized in that, At least one of the bearing cover and the first actuator housing is provided with a bearing mounting groove, and the support bearing is installed in the bearing mounting groove, such that the bearing cover and the first actuator housing abut against each other.

8. The linear dual-head drive device according to claim 1, characterized in that, The first execution unit further includes a first transmission member disposed within the first execution housing, and the drive unit is connected to the first execution member via the first transmission member; the second execution unit further includes a second transmission member disposed within the second execution housing, and the drive unit is connected to the second execution member via the second transmission member.

9. The linear dual-head drive device according to claim 1, characterized in that, The first actuator and the second actuator each include a rope winding wheel, the rope winding wheel is provided with a rope winding groove, and a traction rope is wound on the rope winding wheel along the rope winding groove; wherein, the first actuator housing and the second actuator housing are respectively provided with anti-detachment rollers parallel to the axial direction of the rope winding wheel, and the anti-detachment rollers prevent the traction rope from jumping off the rope winding groove.

10. A clothes drying rack, characterized in that, Includes the linear dual-head drive device as described in any one of claims 1-9.

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