Tandem type multi-section electric push rod take-up device

Abstract

The utility model relates to a tandem type multi-section electric push rod take-up device which comprises a multi-stage electric push rod, a take-up device, a motor base and a take-up device support. The multi-stage electric push rod comprises a plurality of groups of electric push rods which are stacked in sequence; the telescopic rod of the lower electric push rod is rigidly connected with the push rod pipe of the upper electric push rod through a connecting plate; the multi-stage electric push rod is arranged on the motor base, a take-up device support is arranged on the motor base, a plurality of take-up devices are arranged on the take-up device support, each take-up device comprises a supporting shell and a springback winding mechanism arranged in the supporting shell, the springback winding mechanism can rotate in a reciprocating mode in the supporting shell under the action of elastic force, and a cable is wound on the springback winding mechanism. One end of the cable is connected to one group of electric push rods, and the other end of the cable is connected to the control unit. According to the utility model, automatic and orderly arrangement of cables in the stretching and retracting process of the electric push rod is realized, and the phenomena of winding, knotting and the like of the cables are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric linear actuator winding technology, specifically a series-connected multi-section electric linear actuator winding device. Background Technology

[0002] Electric linear actuators are a common type of industrial automation equipment. Driven by an electric motor, they achieve linear motion and force transmission, and are widely used in automated production lines, machinery, medical devices, and smart home applications. Compared to traditional hydraulic and pneumatic linear actuators, electric linear actuators offer advantages such as higher precision, better environmental adaptability, and smaller size. They can also perform positioning control, speed control, and force control depending on the control method used.

[0003] In practical applications, the use of electric linear actuators faces several challenges, especially when multiple actuator sections are used in combination. In tandem electric linear actuators, the extension distance of each actuator varies, resulting in different control cable extension lengths. When the electric linear actuator retracts, its control cable is prone to tangling, affecting the operation of other electric linear actuators in the assembly and leading to problems such as control cable damage and system malfunction.

[0004] In existing technologies, although some designs have attempted to solve the control wire tangling problem through cable management systems, the results have been unsatisfactory. Common methods include using fixed wiring or segmented management, but these methods cannot meet the flexible extension and retraction requirements of multi-section actuators and still suffer from problems such as tangling, breakage, and difficulty in maintenance, thus limiting the reliability and service life of electric actuators.

[0005] Therefore, there is an urgent need to design a new solution that can effectively manage the control lines of multi-section electric actuators, ensuring that they do not become tangled or broken during extension and retraction, thereby improving the overall reliability and service life of the system. Summary of the Invention

[0006] This utility model proposes a series-connected multi-section electric actuator cable retractor device, which realizes the orderly arrangement of cables when the multi-section electric actuator is extended or retracted, thereby extending the service life of the series-connected multi-section electric actuator.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A series-connected multi-section electric linear actuator take-up device includes multi-stage electric linear actuators, take-up devices, a motor base, and a take-up device bracket. The multi-stage electric linear actuators include multiple sets of electric linear actuators stacked sequentially. The telescopic rod of the lower electric linear actuator is rigidly connected to the push rod tube of the upper electric linear actuator through a connecting plate. The multi-stage electric linear actuators are mounted on the motor base, and the take-up device bracket is mounted on the motor base. The take-up device bracket is located on both sides of the multi-stage electric linear actuators, and several take-up devices are mounted on the take-up device bracket. Each take-up device includes a support housing and a spring-loaded winding mechanism disposed within the support housing. The spring-loaded winding mechanism can reciprocate within the support housing under elastic force, and the cable is wound around the spring-loaded winding mechanism. One end of the cable is connected to a set of electric linear actuators, and the other end of the cable is connected to a control unit.

[0009] Furthermore, the supporting housing includes a base and an upper shell, with a column head provided in the center of the base, and the upper shell matching the base; the spring-loaded winding mechanism includes a cable reel and a coil spring, with a take-up groove provided on the outer ring of the cable reel, the coil spring being sleeved on the column head, the cable reel being sleeved on the outside of the coil spring, one end of the coil spring being connected to the column head, and the other end being connected to the cable reel, and the middle part of the cable being fixed on the cable reel.

[0010] Furthermore, the multi-stage electric actuators, from bottom to top, include a first electric actuator, a second electric actuator, a third electric actuator, and a fourth electric actuator, with the third and fourth electric actuators each connected to one of the take-up devices.

[0011] Furthermore, the cross-section of the take-up bracket is... The cable retractor has a U-shaped structure, with the cable take-up bracket mounted outside the multi-stage electric push rod.

[0012] Furthermore, the take-up bracket is connected to the motor base by fixing screws.

[0013] Furthermore, the column head is a cylindrical structure, located in the center of the base and extending vertically upwards. A long groove structure is provided on the column head for connecting the coil spring.

[0014] Furthermore, the spring-loaded winding mechanism also includes a pressure plate, which is a disc structure with a through hole in the center. The inner diameter of the through hole matches the outer diameter of the column head. The pressure plate is movably mounted on the top of the column head through the through hole and is fastened to the top of the cable reel.

[0015] Furthermore, the electric linear actuator includes a drive unit and a linear actuator unit; the drive unit comprises a motor and a transmission mechanism, encapsulated within a rectangular housing, with the motor connected to the cable; the linear actuator unit includes a linear actuator tube and a telescopic rod disposed within the linear actuator tube, with one end of the linear actuator tube connected to the transmission mechanism.

[0016] Furthermore, a series baffle is fixedly connected to the end of the telescopic rod, and the series baffle is fixedly connected to the push rod tube of the previous electric push rod.

[0017] Furthermore, a slide rail mechanism is provided between the upper and lower adjacent electric push rods.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention integrates a cable retractor into a multi-stage electric actuator, enabling automatic and orderly cable management during the extension and retraction of the actuator. The spring-loaded winding mechanism effectively prevents cable tangling and knotting during use, ensuring clean and smooth cable operation. This significantly reduces cable wear and breakage risks, thereby substantially extending cable lifespan. Simultaneously, the orderly cable management reduces the load pressure during actuator extension and retraction, protecting the actuator's transmission components, extending the overall lifespan of the device, and further enhancing its reliability and durability.

[0020] One embodiment of this utility model uses a series baffle to firmly connect the telescopic rods of each stage of the electric push rod to the push rod tube, ensuring the stability of the multi-stage electric push rod during multi-stage telescopic movement. This structural design effectively avoids loosening and asynchrony between each stage of the push rod, ensuring the smooth operation of the device during work; the take-up bracket adopts... The U-shaped structure increases the rigidity and stability of the overall device, enabling it to withstand larger mechanical loads and avoiding malfunctions caused by deformation or loosening of the support frame.

[0021] In one embodiment of this utility model, components such as the support housing, pressure plate, and cable reel can be easily disassembled and replaced. Through modular design, the device can adapt to the cable management needs of different lengths and specifications, demonstrating strong adaptability and versatility, and is widely applicable to various complex industrial automation scenarios.

[0022] Of course, implementing the various technical solutions of this utility model does not necessarily require achieving all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the working state of one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of an electric push rod according to an embodiment of the present invention;

[0027] Figure 4 This is an exploded structural diagram of a take-up device according to an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the base structure of one embodiment of the present invention.

[0029] In the diagram, 1-electric push rod, 101-drive unit, 102-push rod tube, 103-telescopic rod; 2-recorder, 201-base, 202-upper shell, 203-column head, 204-cable reel, 205-pressure plate; 3-motor base; 4-recorder bracket, 5-fixing screw, 6-cable, 7-series baffle, 8-slide rail mechanism. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0031] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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. Therefore, they should not be construed as limitations on this patent.

[0032] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0033] Example:

[0034] This embodiment provides a series-connected multi-section electric push rod cable retractor device, which is particularly suitable for scenarios in industrial automation equipment that require repeated push-pull actions accompanied by cable retraction and extension.

[0035] See Figure 1 and Figure 2 This utility model discloses a series-connected multi-section electric push rod take-up device, comprising a four-stage electric push rod 1, a take-up device 2, a motor base 3, and a take-up device bracket 4. The four-stage electric push rods are sequentially designated as the first electric push rod A, the second electric push rod B, the third electric push rod C, and the fourth electric push rod D from bottom to top. Each stage of the electric push rod 1 consists of a drive unit 101 and a push rod unit. The drive unit includes a motor and a transmission mechanism, encapsulated in a rectangular housing. The motor drives the telescopic rod 103 of the push rod unit to extend or retract through the transmission mechanism. The push rod unit includes a push rod tube 102 and a telescopic rod 103 disposed within the push rod tube 102. One end of the telescopic rod 103 is connected to the transmission mechanism, and the other end is fixedly connected to the push rod tube 102 of the next stage electric push rod 1 through a series baffle 7, realizing multi-stage extension and retraction of the multi-stage push rods.

[0036] To ensure synchronous movement and structural stability between adjacent electric push rods, a slide rail mechanism 8 is provided between them. The slide rail mechanism 8 includes a slide bar on the lower wall of the push rod tube 102 of the upper electric push rod 1 and a slide groove on the push rod tube 102 of the lower electric push rod 1. The slide bar and the slide groove slide together to guide and limit the relative movement of the adjacent electric push rods, so as to ensure the stability and coaxiality of the push rods during the extension and retraction process.

[0037] In this embodiment, the four-stage electric actuator 1 is stacked and fixed on the motor base 3. The motor base 3 is a metal plate structure with threaded holes. The take-up bracket 4 has a cross-section of... The U-shaped structure is covered outside the four-stage electric push rod 1. The lower flange of the take-up bracket 4 has a corresponding threaded hole. The take-up bracket 4 is connected to the motor base 3 by fixing screws 5. The take-up bracket 4 provides stable support for the take-up 2.

[0038] In this embodiment, the first electric push rod A and the second electric push rod B are located relatively close to the control unit, and the cable does not require a large extension / retraction length within the range of these two push rods; therefore, no additional cable retractor is needed to manage the cable arrangement. In contrast, the third electric push rod C and the fourth electric push rod D have a larger extension / retraction range, requiring the cable to have a longer degree of freedom, necessitating effective management and storage through a cable retractor. Therefore, a cable retractor 2 is provided on each side of the cable retractor bracket 4, acting on the third electric push rod C and the fourth electric push rod D respectively. Of course, in other embodiments, the configuration of the cable retractor can be adjusted accordingly based on specific application requirements and equipment structure. For example, if the entire device needs to handle longer cables or the extension / retraction frequency of the push rods is higher, cable retractors can also be provided on the first electric push rod A and the second electric push rod B to ensure that the cables of all push rods can be effectively managed and stored, further improving the reliability and service life of the equipment. In addition, if the layout of the device changes, or the distance between the position of some push rods and the control unit increases, cable retractors can also be added to these push rods to meet new cable management requirements.

[0039] The cable take-up device 2 includes a support housing and a spring-loaded winding mechanism disposed within the support housing. The support housing consists of a base 201 and an upper shell 202. A column head 203 is vertically disposed in the center of the base 201. The column head 203 has a cylindrical structure and a long groove structure on its surface. The spring-loaded winding mechanism includes a cable reel 204 and a coil spring (not shown in the figure). One end of the coil spring is fixed to the column head 203 through the long groove structure, and the other end is connected to the inner wall of the cable reel 204. A winding mechanism is provided on the outer ring of the cable reel 204. The cable tray is used for the orderly winding of cables. In addition, the take-up device 2 in this embodiment is also equipped with a pressure plate 205. The pressure plate 205 is a disc structure with a through hole in the center. Through the through hole, the pressure plate 205 is movably installed on the top of the column head 203. The outer wall of the pressure plate 205 is provided with a stop protrusion. The pressure plate 205 is tightly fastened and locked above the cable take-up reel 204. The pressure plate 205 is used to maintain the overall stability of the cable take-up reel 204 when it rotates, prevent the cable take-up reel 204 from rotating eccentrically, and ensure that the coil spring does not pop out.

[0040] To achieve the effect of organizing the cable, one end of cable 6 is fixedly connected to the motor of electric push rod 1, and then wound around the cable take-up reel 204. The middle part of the cable (the starting point of winding) is fixed on the cable take-up reel 204, and the other end of cable 6 is finally connected to the control unit.

[0041] The working principle and process of this utility model are described below:

[0042] In this embodiment, the working principle of the series-connected multi-section electric push rod cable retractor device is based on the combination of the extension and retraction action of the electric push rod and the automatic cable management function of the cable retractor, thereby realizing the orderly storage and release of the cable and ensuring the stability and efficiency of the entire system during operation.

[0043] The control unit connects to the first electric actuator A, the second electric actuator B, the third electric actuator C, and the fourth electric actuator D via four cables, thereby enabling independent control of each electric actuator 1. When the control unit issues a command, the telescopic rod 103 of the first electric actuator A extends. The telescopic rod 103 of the first electric actuator A drives the second electric actuator B forward through the series baffle 7. Similarly, the telescopic rod of the second electric actuator B continues to drive the third electric actuator C forward, and the third electric actuator C then drives the fourth electric actuator D through its telescopic rod, thus realizing the step-by-step extension and retraction of the multi-stage electric actuators.

[0044] As the extension rod 103 of the second electric push rod B drives the extension of the third electric push rod C, the cable 6 is orderly released from the cable reel 204 of the take-up device 2 to accommodate the movement distance of the third electric push rod C. At this time, as the cable 6 is pulled out of the take-up groove, the coil spring is gradually tightened, and the generated elastic force gradually increases, thereby applying a pull-back force to the cable reel 204. This pull-back force helps control the release speed of the cable 6, ensuring that the cable 6 remains taut at all times.

[0045] Conversely, when the telescopic rod 103 of the second electric push rod B retracts, the third electric push rod C also retracts under the action of the series baffle 7. The spring force in the coil spring of its take-up reel 2 is gradually released, pushing the cable take-up reel 204 to rotate and orderly retract the cable 6 into the take-up slot. As the spring force returns to its initial state, the cable is completely taken into the take-up reel, preparing for the next push rod telescopic action.

[0046] The cable reeling and routing process of the fourth electric actuator D is the same as that of the third electric actuator C. When the fourth electric actuator D extends or retracts, its cable is also released or retracted in an orderly manner from the corresponding cable reel 2.

[0047] Through the aforementioned automatic cable management mechanism, this embodiment effectively solves the problem of cable management in complex operations involving multi-section electric actuators, ensuring the reliability and long service life of the equipment. This structural design not only simplifies the complexity of cable management and reduces the need for manual intervention, but also significantly improves the overall operational efficiency and safety of the device. Because the cables are always kept in an orderly and taut state, problems such as tangling, knotting, or wear are avoided. Therefore, this device is particularly suitable for industrial automation equipment requiring repeated push-pull actions, providing stable and efficient performance under high-intensity, frequent operation environments.

[0048] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A serial multi-section electric push rod take-up device, characterized in that: It includes a multi-stage electric push rod, a wire take-up device, a motor base and a wire take-up device bracket; the multi-stage electric push rod includes multiple groups of electric push rods stacked in sequence; the telescopic rod of the lower electric push rod is rigidly connected to the push rod tube of the upper electric push rod through a connecting plate; the multi-stage electric push rod is arranged on the motor base, and a wire take-up device bracket is arranged on the motor base, the wire take-up device bracket is located on both sides of the multi-stage electric push rod, and a plurality of wire take-ups are arranged on the wire take-up device bracket, the wire take-up device includes a supporting shell and a rebound winding mechanism arranged in the supporting shell, the rebound winding mechanism can reciprocate in the supporting shell under elastic force, the cable is wound on the rebound winding mechanism, one end of the cable is connected to a group of electric push rods, and the other end of the cable is connected to a control unit.

2. The tandem multi-section electric push rod take-up device according to claim 1, characterized in that: The supporting shell includes a base and an upper shell, a column head is arranged in the center of the base, and the upper shell matches the base; the rebound winding mechanism includes a cable winding drum and a coil spring, a wire winding groove is arranged on the outer ring of the cable winding drum, the coil spring is sleeved on the column head, the cable winding drum is sleeved outside the coil spring, one end of the coil spring is connected to the column head, and the other end is connected to the cable winding drum, and the middle part of the cable is fixed on the cable winding drum.

3. The tandem multi-section electric push rod take-up device according to claim 2, characterized in that: The multi-stage electric push rod includes a first electric push rod, a second electric push rod, a third electric push rod and a fourth electric push rod from bottom to top, and the third electric push rod and the fourth electric push rod are respectively connected to one of the wire take-ups.

4. The serial multi-section electric push rod take-up device according to claim 1, characterized in that: The cross section of the wire take-up bracket is The utility model has a Chinese-shaped structure, and the wire take-up device support cover is arranged outside the multi-stage electric push rod.

5. The serial multi-section electric push rod take-up device according to claim 4, characterized in that: The wire take-up device bracket is connected to the motor base through fixing screws.

6. The serial multi-section electric push rod take-up device according to claim 2, characterized in that: The column head is a cylindrical structure, which is located in the center of the base and extends vertically upward. A long slot structure is provided on the column head, and the long slot structure is used to connect the coil spring.

7. The serial multi-section electric push rod take-up device according to claim 6, characterized in that: The rebound winding mechanism also includes a pressure plate, which is a disc structure. A through hole is arranged in the center of the pressure plate. The inner diameter of the through hole matches the outer diameter of the column head. The pressure plate is movably arranged on the top of the column head through the through hole. The pressure plate is buckled above the cable winding drum.

8. The serial multi-section electric push rod take-up device according to claim 1, characterized in that: The electric push rod includes a driving part and a push rod part; the driving part includes a motor and a transmission mechanism, which are encapsulated in a rectangular shell, and the motor is connected to the cable; the push rod part includes the push rod tube and a telescopic rod arranged in the push rod tube, and one end of the push rod tube is connected to the transmission mechanism.

9. The serial multi-section electric push rod take-up device according to claim 8, characterized in that: The end of the telescopic rod is fixedly connected to the series baffle, and the series baffle is fixedly connected to the push rod tube of the upper-level electric push rod.

10. The serial multi-section electric push rod take-up device according to claim 1, characterized in that: A slide rail mechanism is arranged between the upper and lower adjacent electric push rods.

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