Connecting rod type reversing mechanism

Abstract

The utility model relates to the technical field of reversing mechanisms, in particular to a connecting rod type reversing mechanism which comprises a driving motor and a crank, one end of a main shaft of the driving motor is fixedly connected with the crank, the side, away from the driving motor, of one end of the crank is fixedly connected with a crankshaft, the outer side of the crankshaft is fixedly connected with an auxiliary shaft, and the outer side of the auxiliary shaft is fixedly connected with a clamping key. Flywheel structures are mounted on the outer sides of the auxiliary shaft and the clamping keys; the flywheel structure comprises a hub, a key groove is formed in the inner side of the hub, a spoke is fixedly connected to the outer side of the hub in an integrated casting forming mode, an outer ring is fixedly connected to the other end of the spoke in an integrated casting forming mode, a groove bottom is formed in the inner side of the outer ring, and a resistance reducing device is fixedly connected to the outer side of the outer ring in a welding mode. The resistance reduction device comprises a resistance reduction device body, excess energy can be stored in the form of rotation kinetic energy through the flywheel assembly, it is guaranteed that power output of the mechanism is stable, continuous and stable operation of the mechanism is guaranteed, and product quality is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of reversing mechanism technology, specifically a linkage-type reversing mechanism. Background Technology

[0002] A linkage-type reversing mechanism is a mechanical device used to change the direction of motion. It mainly consists of components such as a connecting rod, a crank, and a slider. The connecting rod is a rod-shaped component that connects two moving parts. It is usually a rigid rod with a fixed length. The crank is a component that can make circular motion around an axis. It is connected to one end of the connecting rod. The slider is a component that makes linear motion under the constraints of guide rails, etc., and is connected to the other end of the connecting rod.

[0003] When the crank makes a circular motion, it will drive the slider to make a reciprocating linear motion through the transmission of the connecting rod. If the installation position or angle of the connecting rod on the crank is adjusted, the slider can move in the opposite direction when the crank continues to rotate, thereby realizing the reversing function.

[0004] During the continuous rotation of the crank, the magnitude and direction of the force exerted by the connecting rod on the slider will change dynamically at different rotation angles. In particular, when the crank and connecting rod are close to being collinear, a so-called dead point position is formed. At this position, the force transmission effect is reduced to the lowest point. In applications such as the warp feeding mechanism of textile machinery, where there are strict requirements for the stability of power output, this uneven force transmission phenomenon is very likely to cause fluctuations in yarn tension, which will have an adverse effect on product quality. Therefore, a connecting rod reversing mechanism is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a linkage-type reversing mechanism to solve the problem that when the crank and connecting rod are close to being collinear, a so-called dead point position is formed. At this position, the force transmission effect is reduced to the lowest point. This uneven force transmission phenomenon is very likely to cause fluctuations in yarn tension, which in turn has an adverse effect on product quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A linkage-type reversing mechanism includes a drive motor and a crank. One end of the drive motor's main shaft is fixedly connected to the crank. A crankshaft is fixedly connected to one end of the crank away from the drive motor. An auxiliary shaft is fixedly connected to the outer side of the crankshaft. A key is fixedly connected to the outer side of the auxiliary shaft. A flywheel structure is mounted on the outer side of the auxiliary shaft and the key. The flywheel structure includes a hub. A keyway is formed on the inner side of the hub. Spokes are fixedly connected to the outer side of the hub by integral casting. An outer ring is fixedly connected to the other end of the spokes by integral casting. A groove is formed on the inner side of the outer ring. A drag-reducing device is fixedly connected to the outer side of the outer ring by welding. The drag-reducing device includes a main body. A ridge structure is fixedly connected to the outer side of the main body by integral casting. A recess is formed on the outer side of the main body.

[0008] As a further optimization of this utility model, one end of the drive motor spindle passes through the support frame and is connected to the crank, the other end of the crank shaft is rotatably connected to the outside of the connecting rod, the other end of the connecting rod is rotatably connected to a slider, the slider is slidably connected to the inside of the support frame, and the support frame is divided into two sections.

[0009] As a further optimization of this utility model, the inner side of the keyway and the hollow position of the hub are installed on the outer side of the auxiliary shaft and the key, the inner side of the keyway and the hollow position of the hub are interference-fitted with the outer side of the auxiliary shaft and the key, and the shape of the vertical cross section of the keyway and the key is the same.

[0010] As a further optimization of this utility model, the following features are provided: the spokes are provided in a plurality of shapes, the spokes are S-shaped, the spokes are arranged in a circular array around the center of the hub on the outer side of the hub, the spokes are provided between the hub and the outer ring, and the connection points between the spokes, the hub and the outer ring are all rounded.

[0011] As a further optimization of this utility model, the drag reduction device is provided in several parts, and the drag reduction device is distributed in a circular array on both sides of the wheel hub with the center of the wheel hub as the axis, and the main body of the drag reduction device is designed to be streamlined.

[0012] As a further optimization of this utility model, the ridge structure is provided in a plurality of forms, the upper end of the ridge structure is streamlined, one end of the ridge structure is connected to the outer side of the outer ring, and the ridge structures are parallel to each other.

[0013] As a further optimization of this utility model, the following features are provided: a plurality of pits are provided, the center distance between the pits is 1.2 times the diameter of the pit, the pits are parallel to each other, and the pits and ridge structures are distributed at intervals.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the flywheel assembly stores excess energy as rotational kinetic energy when the power input is sufficient. At critical points where force transmission is uneven or power is insufficient, such as the dead point where the crank and connecting rod are nearly collinear, the flywheel can release the stored energy, ensuring smooth power output and continuous stable operation of the mechanism, effectively guaranteeing product quality. The streamlined drag-reducing device body, the ridge structure that guides airflow, and the concave pit that changes pressure distribution work together to significantly reduce air resistance, reduce energy loss caused by air resistance, and improve energy utilization efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation position of the flywheel device of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled connecting rod structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the flywheel device of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the drag reduction device of this utility model.

[0021] In the diagram: 1. Support frame; 2. Drive motor; 3. Crank; 4. Auxiliary shaft; 5. Key; 6. Crankshaft; 7. Flywheel structure; 71. Hub; 72. Keyway; 73. Outer ring; 74. Slot bottom; 75. Spoke; 76. Drag reduction device; 761. Drag reduction device body; 762. Ridge structure; 763. Recess; 8. Connecting rod; 9. Slider. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Please see Figure 1-5 This utility model provides a technical solution:

[0025] A linkage-type reversing mechanism includes a drive motor 2 and a crank 3. One end of the drive motor 2's main shaft is fixedly connected to the crank 3. One end of the crank 3, away from the drive motor 2, is fixedly connected to a crankshaft 6. An auxiliary shaft 4 is fixedly connected to the outside of the crankshaft 6. A key 5 is fixedly connected to the outside of the auxiliary shaft 4. A flywheel structure 7 is mounted on the outside of the auxiliary shaft 4 and the key 5. The flywheel structure 7 includes a hub 71. A keyway 72 is formed on the inner side of the hub 71. A spoke 75 is fixedly connected to the outer side of the hub 71 by casting. An outer ring 73 is fixedly connected to the other end of the spoke 75 by casting. A groove bottom 74 is formed on the inner side of the outer ring 73. A drag-reducing device 76 is fixedly connected to the outer side of the outer ring 73 by welding. The drag-reducing device 76 includes a drag-reducing device body 761. A ridge structure 762 is fixedly connected to the outer side of the drag-reducing device body 761 by casting. A recess 763 is formed on the outer side of the drag-reducing device body 761.

[0026] As a further implementation of the above technical solution: several drag reduction devices 76 are provided. The drag reduction devices 76 are arranged in a circular array on both sides of the hub 71 with the center of the hub 71 as the axis. The main body 761 of the drag reduction device is designed to be streamlined. The streamlined design can reduce the air resistance when the flywheel structure 7 rotates, making the flywheel structure 7 rotate more smoothly, reducing the energy loss caused by air resistance, improving the energy utilization efficiency of the flywheel structure 7, and contributing to the efficient operation of the entire reversing mechanism.

[0027] As a further implementation of the above technical solution: a number of recesses 763 are provided, the center distance between the recesses 763 is 1.2 times the diameter of the recesses 763, the recesses 763 are parallel to each other, and the recesses 763 and the ridge structure 762 are distributed alternately, which can change the pressure distribution of air on the surface of the flywheel structure 7, make the air adhere more closely to the surface of the flywheel structure 7, reduce the formation of air bubbles, thereby reducing air resistance and improving the energy utilization efficiency of the flywheel structure 7;

[0028] As a further implementation of the above technical solution: the keyway 72 is installed on the inner side and the hollow position of the hub 71 on the outer side of the auxiliary shaft 4 and the key 5. The keyway 72 and the hollow position of the hub 71 are interference-fitted with the outer side of the auxiliary shaft 4 and the key 5. The keyway 72 and the key 5 have the same shape in their vertical cross sections. The cooperation with the auxiliary shaft 4 and the key 5 ensures the connection accuracy and stability between the flywheel structure 7 and the auxiliary shaft 4, so that the flywheel structure 7 can accurately follow the movement of the auxiliary shaft 4.

[0029] As a further implementation of the above technical solution: several ridge structures 762 are provided, the upper end of the ridge structure 762 is streamlined, one end of the ridge structure 762 is connected to the outer side of the outer ring 73, the ridge structures 762 are parallel to each other, guiding the air to flow along its direction, reducing the turbulence of air on the surface of the flywheel structure 7, making the air flow more orderly, further reducing air resistance and reducing energy loss.

[0030] As a further implementation of the above technical solution: several spokes 75 are provided, and the shape of the spokes 75 is set as S-shaped. The spokes 75 are distributed in a circular array on the outside of the hub 71 with the center of the hub 71 as the axis. The spokes 75 are set between the hub 71 and the outer ring 73. The connection points between the spokes 75, the hub 71 and the outer ring 73 are all rounded. The S-shaped design can optimize the stress distribution of the flywheel structure 7 during rotation, so that the stress is more evenly distributed on the spokes 75, the hub 71 and the outer ring 73, so that it can withstand the various stresses generated during high-speed rotation. At the same time, this shape reduces the weight of the flywheel structure 7 to a certain extent, which is beneficial to the energy storage and release of the flywheel structure 7.

[0031] As a further implementation of the above technical solution: one end of the main shaft of the drive motor 2 passes through the support frame 1 and is connected to the crank 3. The other end of the crank shaft 6 is rotatably connected to the outside of the connecting rod 8. The other end of the connecting rod 8 is rotatably connected to the slider 9. The slider 9 is slidably connected to the inside of the support frame 1. The support frame 1 is divided into two sections, which converts the rotational motion of the crank shaft 6 into the linear reciprocating motion of the slider 9. It is a key component for realizing the motion form conversion of the reversing mechanism.

[0032] Working process: Drive motor 2 is started by powering on via external wires, and its main shaft rotates. One end of the main shaft passes through support frame 1 and is fixedly connected to crank 3, thereby transmitting power to crank 3. Under the drive of drive motor 2, crank 3 rotates around the connection point with the main shaft. The crank shaft 6, fixedly connected to the side of crank 3 away from drive motor 2, moves accordingly. The other end of crank shaft 6 is rotatably connected to the outside of connecting rod 8. The rotational motion of crank 3 is converted into the reciprocating oscillation of connecting rod 8 through crank shaft 6. The reciprocating oscillation of connecting rod 8 drives slider 9 to slide inside support frame 1. The support frame 1 is divided into two sections, which provide guidance and support for the sliding of the slider 9. Through this transmission process, the reversing mechanism converts the rotational motion of the drive motor 2 into the linear reciprocating motion of the slider 9. It can be applied to mechanical devices that require linear reciprocating motion. The flywheel structure 7 is installed on the outside of the auxiliary shaft 4 and the key 5 through the keyway 72 opened on the inner side of its hub 71, ensuring that the flywheel structure 7 is tightly connected to the auxiliary shaft 4. The auxiliary shaft 4 is fixedly connected to the outside of the crankshaft 6, thereby linking the flywheel structure 7 with the power transmission system of the entire reversing mechanism.

[0033] When the drive motor 2 starts, the main shaft rotates and drives the crank 3 to move, which in turn drives the slider 9 to move through the crankshaft 6 and connecting rod 8. The entire reversing mechanism starts to work. During the operation of the mechanism, when the power input is sufficient, the power can be smoothly transmitted to the auxiliary shaft 4 in certain motion stages of the reversing mechanism. The auxiliary shaft 4 drives the flywheel structure 7 to rotate. The flywheel structure 7 has a certain moment of inertia, and its mass distribution allows it to store energy during rotation. As the speed of the auxiliary shaft 4 increases, the speed of the flywheel structure 7 also increases, storing the excess energy in the form of rotational kinetic energy. At this time, the spokes 75, hub 71, and outer ring 73 rotate together around the auxiliary shaft 4 at high speed. The S-shaped spokes 75 help optimize the stress distribution, enabling the flywheel structure 7 to stably withstand the centrifugal force and other stresses generated during rotation. At the same time, its special shape also has certain advantages. The flywheel structure reduces the weight of the flywheel to a certain extent, which is beneficial for energy storage and release. When the reversing mechanism moves to the dead point where the crank 3 and connecting rod 8 are close to collinear, the force transmission effect is the worst, and the power input may not be enough to maintain the normal operation of the mechanism. In this case, the flywheel structure 7 uses its previously stored rotational kinetic energy to start releasing energy. Due to inertia, the flywheel structure 7 continues to rotate and transmits energy to other parts of the reversing mechanism through the auxiliary shaft 4, driving the crank 3 to continue moving. This allows the connecting rod 8 and slider 9 to overcome the problem of uneven force transmission and maintain a relatively stable motion state, ensuring the continuous operation of the entire mechanism. In this process, the flywheel structure 7 plays the role of energy buffering and regulation, making the power output of the reversing mechanism more stable and avoiding problems such as unstable operation or jamming caused by uneven force transmission.

[0034] During the rotation of the flywheel structure 7, the drag-reducing device 76 on the outer side of the outer ring 73 begins to function. The main body 761 of the drag-reducing device is streamlined. When air flows through the flywheel structure 7, this streamlined design reduces the air resistance to the flywheel, making the flywheel rotate more smoothly. The ridge structure 762 on the drag-reducing device 76 can guide the air to flow in its direction, reducing turbulence on the flywheel surface. Under the guidance of the ridge structure 762, the air can flow more orderly, thereby reducing air resistance and reducing energy loss caused by air resistance during flywheel rotation. The drag-reducing device 76 also has several pits 763, which can change the pressure distribution of air on the surface of the flywheel structure 7, making the air adhere more closely to the flywheel surface and reducing the formation of air bubbles. In this way, air resistance is further reduced, the energy utilization efficiency of the flywheel structure 7 is improved, and it can play a better role in the process of storing and releasing energy, providing more stable power support for the commutation mechanism.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A linkage-type reversing mechanism, comprising a drive motor (2) and a crank (3), characterized in that: A crank (3) is fixedly connected to one end of the main shaft of the drive motor (2), a crankshaft (6) is fixedly connected to one end of the crank (3) away from the drive motor (2), an auxiliary shaft (4) is fixedly connected to the outside of the crankshaft (6), a key (5) is fixedly connected to the outside of the auxiliary shaft (4), and a flywheel structure (7) is installed on the outside of the auxiliary shaft (4) and the key (5). The flywheel structure (7) includes a hub (71), a keyway (72) is provided on the inner side of the hub (71), a spoke (75) is fixedly connected to the outer side of the hub (71) by casting, an outer ring (73) is fixedly connected to the other end of the spoke (75) by casting, a groove bottom (74) is provided on the inner side of the outer ring (73), and a drag reduction device (76) is fixedly connected to the outer side of the outer ring (73) by welding. The drag reduction device (76) includes a drag reduction device body (761), and a ridge structure (762) is fixedly connected to the outside of the drag reduction device body (761) by means of integral casting. A pit (763) is opened on the outside of the drag reduction device body (761).

2. The linkage-type reversing mechanism according to claim 1, characterized in that: One end of the main shaft of the drive motor (2) passes through the support frame (1) and is connected to the crank (3). The other end of the crank shaft (6) is rotatably connected to the outside of the connecting rod (8). The other end of the connecting rod (8) is rotatably connected to a slider (9). The slider (9) is slidably connected to the inside of the support frame (1). The support frame (1) is divided into two sections.

3. The linkage-type reversing mechanism according to claim 1, characterized in that: The inner side of the keyway (72) and the hollow position of the hub (71) are installed on the outer side of the auxiliary shaft (4) and the key (5). The inner side of the keyway (72) and the hollow position of the hub (71) are interference-fitted with the outer side of the auxiliary shaft (4) and the key (5). The shape of the vertical section of the keyway (72) and the key (5) is the same.

4. The linkage-type reversing mechanism according to claim 1, characterized in that: The spokes (75) are provided in a plurality of forms, and the spokes (75) are S-shaped. The spokes (75) are arranged in a circular array around the center of the hub (71) on the outside of the hub (71). The spokes (75) are located between the hub (71) and the outer ring (73). The connection points between the spokes (75), the hub (71) and the outer ring (73) are all rounded.

5. A linkage-type reversing mechanism according to claim 1, characterized in that: The drag reduction device (76) is provided in several units. The drag reduction device (76) is arranged in a circular array on both sides of the hub (71) with the center of the hub (71) as the axis. The main body (761) of the drag reduction device is designed to be streamlined.

6. A linkage-type reversing mechanism according to claim 1, characterized in that: The ridge structure (762) is provided in a plurality of manners. The upper end of the ridge structure (762) is configured to be streamlined. One end of the ridge structure (762) is connected to the outer side of the outer ring (73). The ridge structures (762) are parallel to each other.

7. A linkage-type reversing mechanism according to claim 1, characterized in that: The pits (763) are provided in a plurality of them. The center distance between the pits (763) is 1.2 times the diameter of the pits (763). The pits (763) are parallel to each other. The pits (763) and the ridge structure (762) are distributed at intervals.

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