Motor tension system with multiplied output

Abstract

The utility model discloses a motor tension system with multiplied output, which comprises a frame provided with a linear guide structure, a tension pulley and a rope, the center of the tension pulley is rotatably connected with an output shaft, the output shaft is slidably connected to the linear guide structure, and the rope is wound on the tension pulley; the plane where center shafts of the two force application motors are located is perpendicular to the sliding track of the output shaft, the two force application motors are symmetrical about the sliding track of the output shaft, the force application motors are connected with wheel discs, the two opposite ends of the rope are connected to the two wheel discs correspondingly, and the wheel discs are provided with locking grooves and containing grooves. One end of the containing groove communicates with the locking groove, a locking block is arranged in the locking groove, and the end of the rope penetrates through the containing groove and is connected to the locking block. The utility model discloses can realize the multiplied output of pulling force, response speed is fast, control delay is low, control effect is accurate and reliable, can effectively reduce failure rate, maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to the field of motor applications, and in particular to a motor tension system that multiplies output. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It is widely used in industries, transportation, medical fields and so on. In systems that require tensile force, the electric motor outputs traction force through structures such as winches. It is commonly used in cranes, fitness equipment, automated production lines and other similar applications.

[0003] In tension application systems, a motor winds a rope through a winch. One end of the rope is connected to the winch, and the other end is directly connected to the load, thus applying the tension output by the motor to the load. In high-load application scenarios, a high-power motor is required to achieve drive traction. The motor has a heavy workload and is prone to damage. In addition, a high-power motor also increases the cost and size of the tension system. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a motor pulling system with multiplied output, which can effectively save maintenance and operating costs, has a long service life, flexible design layout, and stable pulling output.

[0005] A motor tension system for multiplying output according to an embodiment of the present invention includes:

[0006] The frame is equipped with a linear guide structure, a tension pulley and a rope. The center of the tension pulley is rotatably connected to an output shaft, which is slidably connected to the linear guide structure. The output shaft is used to output tension. The middle section of the rope is wrapped around one side of the tension pulley.

[0007] There are two force-applying motors, each located on the other side of the tension pulley. Both force-applying motors are connected to the frame. The plane containing the central axis of the two force-applying motors is perpendicular to the sliding trajectory of the output shaft. The sliding trajectories of the two force-applying motors are symmetrical about the output shaft. The output end of each force-applying motor is connected to a wheel. The opposite ends of the rope are connected to the two wheels respectively. The wheel has a locking groove and a storage groove for matching the rope. The locking groove is located on the side of the wheel, and the storage groove is located on the circumferential surface of the wheel. One end of the storage groove is connected to the locking groove. A locking block is provided in the locking groove. The end of the rope passes through the storage groove and is connected to the locking block.

[0008] In this embodiment, the linear guide structure is a guide seat, which has a guide groove extending along the linear direction, and the output shaft is slidably connected in the guide groove.

[0009] In this embodiment, the guide groove extends in a direction perpendicular to the horizontal plane, and both force-applying motors are located above the tension pulley.

[0010] In this embodiment, the locking groove is circular and the locking block is semi-circular. The locking block is rotatably connected to the locking groove. The locking block is provided with a connecting locking screw hole and a fixing hole. The fixing hole is perpendicular to the locking screw hole. The end of the rope is also inserted through the fixing hole. A locking screw is threaded into the locking screw hole so that the end of the rope is fixedly connected to the locking block.

[0011] In this embodiment, the side of the wheel is also provided with a clearance groove that connects to the locking groove.

[0012] In this embodiment, there are two storage slots, which are respectively connected to the opposite sides of the locking slot.

[0013] In this embodiment, limiting baffles are provided on both opposite sides of the wheel.

[0014] In this embodiment, the force-applying motor is an external rotor motor. The stator fixed shaft of the external rotor motor is connected to the frame, and the wheel is connected to the rotor housing of the external rotor motor.

[0015] In this embodiment, the wheel is rotatably connected to the stator fixed shaft of the external rotor motor.

[0016] The embodiments of this utility model have at least the following beneficial effects:

[0017] The force-applying motor pulls the circumferential surface of the tension pulley via a rope connection, and the tension is output through the output shaft at the center of the pulley. The lever arm of the force-applying motor is greater than that of the output shaft, achieving a multiplied output of tension. This effectively reduces the workload of the force-applying motor, saving on initial and maintenance costs. It also effectively controls the size and energy consumption of the motor-tensioning system, significantly reducing operating and system costs. Furthermore, the design layout is flexible and its application range is wide. In addition, by connecting two force-applying motors to both ends of the rope, and ensuring that the translational trajectories of the two motors about the output shaft are symmetrical, it is possible to... It effectively improves the winding or unwinding speed of the rope, with a fast output shaft response speed, low control delay, and accurate and reliable control effect. The symmetrical arrangement of the structure reduces the risk of lateral deviation of the output shaft, ensuring stable and reliable tension output and linearity of the output shaft translation trajectory. This significantly reduces jamming or wear during operation, effectively lowers the failure rate, reduces maintenance costs, and effectively extends the service life of the motor tension system. The rope end is fixed and positioned in the locking groove of the wheel by a locking block, which effectively disperses the stress at the rope end, further extending the rope's service life and reducing maintenance costs. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional structural diagram of the motor tension system with multiplied output according to an embodiment of the present invention;

[0020] Figure 2 A bottom view of the motor tension system with multiplied output according to an embodiment of this utility model;

[0021] Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure of line A-A';

[0022] Figure 4 In order to be in Figure 3 A magnified structural diagram of B in the diagram;

[0023] Figure 5 This is a schematic diagram of the structure of the motor tension system for multiplying output according to an embodiment of the present invention, showing the process of disassembling and tightening the locking screws.

[0024] Figure label:

[0025] Frame 100, guide seat 110, guide groove 111, tension pulley 120, output shaft 121, rope 130;

[0026] The components include: a power motor 200, a stator fixed shaft 201, a rotor housing 202, a wheel 210, a locking groove 211, a storage groove 212, a clearance groove 213, a locking block 220, a locking screw hole 221, a fixing hole 222, a locking screw 230, and a limit baffle 240. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0029] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] An electric motor is a device that converts electrical energy into mechanical energy. It is widely used in industries such as manufacturing, transportation, and medicine. In tension applications, the motor outputs traction force through structures such as winches, and is commonly used in cranes, fitness equipment, and automated production lines. In tension applications, the motor winds a rope around a winch. One end of the rope is connected to the winch, and the other end is directly connected to the load, thus applying the tension force output by the motor to the load. In high-load applications, high-power motors are required for drive and traction. However, this results in a heavy workload for the motor, making it prone to damage. Furthermore, high-power motors increase the cost and size of the tension system, leading to high operating costs, significant limitations on application scenarios, and considerable constraints on design and layout.

[0032] Furthermore, traditional ropes are often secured by tying the ends to the winch, which is prone to loosening and wear, resulting in insufficient structural reliability and certain safety hazards. Moreover, in single-motor drive, the rope's winding and unwinding process is susceptible to unstable tension due to load changes or motor response delays, affecting control accuracy.

[0033] The following is for reference only. Figure 1 To be continued Figure 5 This invention describes a motor tension system with multiplied output, which can effectively save maintenance and operating costs, has a long service life, flexible design layout, and stable tension output.

[0034] Reference Figures 1 to 5 An embodiment of the present invention provides a motor tension system for multiplying output, comprising:

[0035] The frame 100 is equipped with a linear guide structure, a tension pulley 120, and a rope 130. The center of the tension pulley 120 is rotatably connected to an output shaft 121, which is slidably connected to the linear guide structure. The linear guide structure is used to restrict the output shaft 121 to slide linearly along a specified trajectory, thereby controlling the sliding trajectory of the tension pulley to be linear. The output shaft 121 is used to connect to an external load structure to output tension. The middle section of the rope 130 is wrapped around one side of the tension pulley 120 so that the tension pulley 120 functions as a movable pulley.

[0036] Two force-applying motors 200 are provided, both located on the other side of the tension pulley 120. That is, both force-applying motors 200 are located on the side of the tension pulley 120 away from the middle section of the wound rope 130. The housings of both force-applying motors 200 are connected to the frame 100. The plane containing the central axes of the two force-applying motors 200 is perpendicular to the sliding trajectory of the output shaft 121, and the sliding trajectories of the two force-applying motors 200 are symmetrical about the output shaft 121. Each force-applying motor 200 has a wheel 210 connected to its output end. The opposite ends of the rope 130 are respectively fixedly connected to the two wheel 210s. The force-applying motors 200 drive the wheel 210 to rotate around their central axes, thereby driving the tension pulley 120 to slide along the linear guide structure. The pulling force is then output through the output shaft 121 of the tension pulley 120. The wheel 210 is provided with a locking groove 211 and a storage groove 212 for matching the rope 130. The storage groove 212 is used to store the end segment of the rope 130. The locking groove 211 is located on the end side of the wheel 210, and the storage groove 212 is located on the circumferential surface of the wheel 210. The storage groove 212 is introduced and set along the tangential direction of the wheel 210, which can effectively reduce the bending resistance formed when the end of the rope 130 passes through the storage groove 212, and can effectively extend the service life of the rope 130. One end of the storage groove 212 is connected to the locking groove 211. A locking block 220 is provided in the locking groove 211. The end of the rope 130 passes through the storage groove 212 and is fixedly connected to the locking block 220.

[0037] The force-applying motor 200 pulls the pulley 120 circumferentially via a rope 130 connection, and the pulling force is output through the output shaft 121 at the center of the pulley 120. According to the torque balance principle, the lever arm of the force-applying motor 200 is greater than the lever arm of the output shaft 121, and the lever arm of the force-applying motor 200 is approximately twice that of the output shaft 121, thus achieving a multiplied output of pulling force. Since the power and torque of a single motor determine the maximum value of the pulling force output, if a greater pulling force output is required, traditional technology requires replacing it with a more powerful motor. Such motors often occupy a larger area and consume significantly more energy. This solution effectively reduces the workload of the force-applying motor 200, effectively saves on motor investment and maintenance costs, and effectively controls the size and energy consumption of the motor pulling system. It not only effectively reduces operating and system costs but also offers flexible design and layout with a wide range of applications. Furthermore, by connecting two force-applying motors 200 to... The two ends of the rope 130 and the symmetrical translational trajectories of the two force-applying motors 200 about the output shaft 121 can effectively improve the winding or unwinding speed of the rope 130. The output shaft 121 has a fast response speed, low control delay, accurate and reliable control effect, and high control precision. The symmetrical arrangement structure can reduce the risk of lateral deviation of the output shaft 121, and the tension output is stable and reliable. It can ensure the linearity of the translational trajectory of the output shaft 121, thereby significantly reducing the jamming or wear during operation, effectively reducing the failure rate, reducing maintenance costs, and effectively extending the service life of this motor tension system. The ends of the rope 130 are fixed and positioned in the locking groove 211 of the wheel 210 by the locking block 220, which can effectively disperse the stress at the end of the rope 130, avoiding the loosening or stress concentration problems of traditional binding methods, so that the end of the rope 130 is evenly stressed, which can effectively extend the service life of the rope 130 and reduce maintenance costs.

[0038] It is understood that the linear guide structure is a guide seat 110, which has a guide groove 111 extending along the linear direction. The output shaft 121 is slidably connected in the guide groove 111. The guide groove 111 can effectively limit the sliding of the output shaft 121 in a predetermined trajectory. This linear guide structure can effectively suppress the possible offset and vibration of the output shaft 121 when it is in the hand. The overall structure has high reliability, significantly improves the system's operational stability and load capacity, and can provide reliable mechanical protection for the output of tensile force, resulting in stable and reliable tensile force output.

[0039] Understandably, the guide groove 111 extends in a direction perpendicular to the horizontal plane, and both force-applying motors 200 are located above the horizontal position of the tension pulley 120. The guide groove 111 is arranged vertically, and its extension direction is consistent with the direction of gravity, ensuring that the output shaft 121 moves linearly along the vertical line. The two force-applying motors 200 are mounted in a high position, symmetrically arranged directly above the vertical axis of the tension pulley 120.

[0040] This structural design fully utilizes gravity to achieve system self-tensioning: under the influence of gravity, the tension pulley 120 generates a downward preload, ensuring that the wound rope 130 remains taut at all times, effectively avoiding the slack phenomenon common in traditional systems. Dynamic testing shows that this arrangement increases the working tension of the rope 130, significantly enhancing the reliability and response speed of the transmission system while reducing motor power loss. This optimized design, conforming to mechanical principles, not only simplifies the system structure but also improves the overall operational stability and reliability.

[0041] It is understood that, along the axial extension direction of the wheel 210, the locking groove 211 is circular and the locking block 220 is semi-circular. The locking block 220 is rotatably connected in the locking groove 211. The locking block 220 is provided with a connecting locking screw hole 221 and a fixing hole 222. The fixing hole 222 is perpendicular to the locking screw hole 221 and passes through the opposite sides of the locking block 220. The end of the rope 130 also passes through the fixing hole 222. A locking screw 230 is threaded in the locking screw hole 221 so that the end of the rope 130 is fixedly connected to the locking block 220. Furthermore, the end of the rope 130 passes through the fixing hole 222 and reaches the locking groove 211. After being tied, the end of the rope 130 is locked in place at one end of the fixing hole 222 connected to the locking groove 211. With the locking action of the locking screw 230, the stability of the structure connecting the end of the rope 130 to the locking block 220 can be effectively improved. The double fixing method can effectively prevent loosening and falling off, making the structure stable, reliable, and highly safe. The locking groove 211 extends axially along the wheel 210 and forms a circular cavity structure, in which a semi-circular locking block 220 is fitted. The two can be rotatably connected by a rotating shaft.

[0042] The locking block 220 employs a composite locking mechanism design: it has a radially through-hole 222 for threading the end of the rope 130, and an axially connected locking screw hole 221 perpendicular to the through-hole 222. During installation, the end of the rope 130 passes through the through-hole 222 sequentially and is secured in the locking groove 211 to prevent detachment, and then the locking screw 230 is screwed in to apply radial tightening. This dual locking mechanism achieves three-dimensional positioning of the connection point through the synergistic effect of the geometric constraints of the binding and the mechanical constraints of the threaded tightening. This structure significantly improves the tensile strength of the rope 130, and maintains good initial locking force even after fatigue testing, significantly enhancing safety and reliability under high dynamic load conditions.

[0043] Understandably, the end side of the wheel 210 is also provided with a clearance groove 213 that connects to the locking groove 211, which facilitates the placement and removal of the locking block 220. The end side of the wheel 210 is further provided with a clearance groove 213 that connects to the locking groove 211, forming an assembly channel that is easy to operate.

[0044] The clearance groove 213 adopts a flared transition design with rounded corners at its entrance to ensure that the locking block 220 passes through without interference during disassembly and assembly. The connection between the bottom of the clearance groove 213 and the locking groove 211 adopts a gradient transition surface, which not only ensures structural strength but also provides unobstructed operating space for tools, significantly improving the maintainability of the system.

[0045] Understandably, there are two storage slots 212, which are respectively connected to the opposite sides of the locking slot 211. Depending on the application requirements, the rope 130 is wound around the wheel 210 in different directions. All of them can pass through the storage slot 212 and enter the locking block 220 in the locking slot 211 to achieve a fixed connection. The installation of the rope 130 is convenient and can effectively shorten the installation and maintenance time.

[0046] It is understandable that each wheel 210 is provided with a limiting baffle 240 on both sides. The limiting baffle 240 is used to limit the position of the rope 130 around the circumferential surface of the wheel 210 for storage, which can prevent the rope 130 from leaving the designated area of ​​the wheel 210 and affecting the stability of the structure.

[0047] It is understood that the power-applying motor 200 is an external rotor motor. The stator fixed shaft 201 of the external rotor motor is connected to the frame 100, and the wheel 210 is fixedly connected to the rotor housing 202 of the external rotor motor. The external rotor motor drives the wheel 210 to rotate through the rotor housing 202.

[0048] The power motor 200 adopts an external rotor structure design. Its stator fixed shaft 201 is rigidly connected to the main body of the frame 100 by high-strength bolts to form a stable electromagnetic field generating unit. The wheel 210 is integrated with the motor rotor housing 202 by interference fit and anti-loosening bolts to form an integrated rotating assembly.

[0049] It is understandable that the wheel 210 is rotatably connected to the stator fixed shaft 201 of the external rotor motor. The wheel 210 forms a rotatable connection with the stator fixed shaft 201 of the external rotor motor through a precision bearing assembly, which effectively ensures the accuracy and stability of power transmission and can effectively improve the stability of the relative position between the wheel 210 and the force application electronics.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor tension system for multiplying output, characterized in that, include: The frame (100) is provided with a linear guide structure, a tension pulley (120) and a rope (130). The center of the tension pulley (120) is rotatably connected to an output shaft (121). The output shaft (121) is slidably connected to the linear guide structure. The output shaft (121) is used to output tension. The middle section of the rope (130) is wound around one side of the tension pulley (120). Two force-applying motors (200) are provided, each located on the other side of the tension pulley (120). Both force-applying motors (200) are connected to the frame (100). The plane containing the central axis of the two force-applying motors (200) is perpendicular to the sliding trajectory of the output shaft (121). The sliding trajectories of the two force-applying motors (200) are symmetrical about the output shaft (121). The output end of each force-applying motor (200) is connected to a wheel (210). The opposite ends of the rope (130) are respectively connected to the two wheels. (210) The wheel (210) is provided with a locking groove (211) and a storage groove (212) for matching the rope (130). The locking groove (211) is located on the side of the wheel (210), and the storage groove (212) is located on the circumferential surface of the wheel (210). One end of the storage groove (212) is connected to the locking groove (211). A locking block (220) is provided in the locking groove (211). The end of the rope (130) passes through the storage groove (212) and is connected to the locking block (220).

2. The motor tension system with multiplied output according to claim 1, characterized in that, The linear guide structure is a guide seat (110), which has a guide groove (111) extending in a linear direction, and the output shaft (121) is slidably connected in the guide groove (111).

3. The motor tension system for multiplying output according to claim 2, characterized in that, The guide groove (111) extends in a direction perpendicular to the horizontal plane, and the two force-applying motors (200) are located above the tension pulley (120).

4. The motor tension system for multiplying output according to claim 1, characterized in that, The locking groove (211) is circular, and the locking block (220) is semi-circular. The locking block (220) is rotatably connected to the locking groove (211). The locking block (220) is provided with a connecting locking screw hole (221) and a fixing hole (222). The fixing hole (222) is perpendicular to the locking screw hole (221). The end of the rope (130) is also inserted through the fixing hole (222). A locking screw (230) is threaded into the locking screw hole (221) so that the end of the rope (130) is fixedly connected to the locking block (220).

5. The motor tension system for multiplying output according to claim 1, characterized in that, The side of the wheel (210) is also provided with a relief groove (213) that connects to the locking groove (211).

6. The motor tension system with multiplied output according to claim 1, characterized in that, The storage slot (212) has two slots, which are respectively connected to the opposite sides of the locking slot (211).

7. The motor tension system for multiplying output according to claim 1, characterized in that, Limiting baffles (240) are provided on both sides of the wheel (210).

8. The motor tension system with multiplied output according to claim 1, characterized in that, The force-applying motor (200) is an external rotor motor. The stator fixed shaft (201) of the external rotor motor is connected to the frame (100), and the wheel (210) is connected to the rotor housing (202) of the external rotor motor.

9. The motor tension system for multiplying output according to claim 8, characterized in that, The wheel (210) is rotatably connected to the stator fixed shaft (201) of the external rotor motor.

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