Clutch of operating mechanism

Abstract

The utility model relates to the technical field of mechanical transmission systems, and discloses a clutch of an operating mechanism, which comprises a main shaft, a star wheel sleeved on the main shaft and a driving gear coaxially assembled outside the star wheel, a plurality of radially distributed first bumps are arranged on the side wall of the outer ring of the star wheel, and the first bumps are in running fit with the driving gear. The outer side wall, close to the first protruding block, of the star wheel is arranged in an inclined plane mode, a wedge-shaped space is formed between the star wheel and the driving gear, a pin roller is arranged in the wedge-shaped space, a reset piece is arranged between the pin roller and the side wall of the first protruding block, a driving ring is coaxially arranged on the side, away from the main shaft, of the star wheel, and the driving ring is rotationally arranged in the driving gear. A second protruding block is arranged between every two adjacent first protruding blocks, the second protruding blocks are arranged on the side wall of the outer ring of the star wheel and are in running fit with the driving gear, the driving ring is provided with inserting grooves corresponding to the second protruding blocks, and the second protruding blocks are inserted into the corresponding inserting grooves. The clutch has the effect of improving the reliability of the clutch.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical transmission systems, and in particular to a clutch of an operating mechanism. Background Art

[0002] In electric operating mechanisms, precise control of actions such as the opening and closing of valves and the opening and closing of knife switches is often required. A bidirectional overrunning clutch can precisely transmit or cut off power according to the motor's rotation direction and speed.

[0003] For example, in the electric valve operating mechanism, when the motor rotates forward to drive the valve to open, the corresponding components of the two-way overrunning clutch are wedged tightly, stably transmitting the motor power to the transmission components of the valve, so that the valve can be accurately opened at a predetermined angle; and when the motor reverses to close the valve, the clutch can work reliably to ensure that the valve is closed in place without excessive movement or sticking, realizing fine control of the valve operation action, which is crucial for some industrial processes with high requirements for flow control accuracy. For example, valves that accurately control material flow in chemical production rely on two-way overrunning clutches to achieve precise opening adjustment.

[0004] Chinese patent publication number CN202678252U discloses a bidirectional overrunning clutch for a dual power switch, which includes a main shaft, a star wheel mounted on the main shaft, and a driving gear coaxially assembled on the outside of the star wheel for relative rotation. The driving gear is connected to the motor through a gear set. The star wheel is provided with at least two grooves for accommodating rollers. A cam portion is machined in the groove, and rollers are arranged on both sides of the cam portion. A reset component is provided between the side wall of the groove and the roller near the side wall. The pusher dog is installed between the two rollers in each groove.

[0005] The aforementioned two-way overrunning clutch, regardless of power on or off, uses spring force and friction to wed the rollers in the wedge-shaped gap between the star wheel and the driving gear, thereby driving the star wheel to rotate together. This ultimately transfers power from the driving gear to the main shaft connected to the star wheel, engaging the clutch. After prolonged use, the rollers and springs, as key load-bearing components, are prone to accelerated wear due to frequent two-way action, shortening the clutch's service life. Specifically, the rollers and springs are prone to deformation or fatigue fracture under the action of bidirectional forces, thus affecting the overall performance and reliability of the clutch. This not only increases maintenance costs but can also lead to system failures due to clutch failure, seriously affecting the continuity and safety of industrial production. Utility Model Content

[0006] In order to improve the reliability of the clutch, the present application provides a clutch with an operating mechanism.

[0007] The clutch of an operating mechanism provided in this application adopts the following technical solution:

[0008] The transmission gear of claim 1, wherein the first gear is connected to the transmission gear of the present invention to be connected to the transmission gear of the present invention; and the transmission gear of the present invention is connected to the transmission gear of the present invention to be connected to the transmission gear of the present invention.

[0009] By adopting the above technical solution, when power is applied, the external gear set drives the driving gear to rotate. The roller is wedged in the wedge-shaped gap between the star gear and the driving gear due to the reset member and friction, thereby driving the star gear to rotate together. At this time, the clutch is engaged, and power is transmitted from the driving gear to the main shaft connected to the star gear. When power is removed, the drive ring is driven to rotate, and the sidewalls of the drive ring's slot push the second protrusion, thereby achieving synchronous rotation of the star gear, ultimately transferring power from the driving gear to the main shaft connected to the star gear, and engaging the clutch. This achieves the same effect as electric operation, thereby improving the flexibility and reliability of the clutch. This design not only reduces the frequency of force applied to the roller and reset member, but also avoids the need for opening and closing operations through the roller and reset member if they are damaged. This not only extends the service life of the clutch, but also improves the operating precision and stability of the entire clutch.

[0010] Optionally, an anti-jamming claw is provided between each second protrusion and the roller, the anti-jamming claw is connected to the drive ring, and the gap between the second protrusion and the side wall of the plug-in slot is smaller than the gap between the anti-jamming claw and the roller.

[0011] By adopting this technical solution, when a roller becomes stuck, the drive ring is rotated, causing the anti-stuck claw to push the roller out of the wedge-shaped gap, eliminating the wedging force between the roller, the star wheel, and the driving gear, thereby releasing the roller from the stuck state. The gap between the second protrusion and the sidewall of the insertion slot is smaller than the gap between the anti-stuck claw and the roller. This allows the transmission operation between the drive ring and the star wheel during power outages to prevent the anti-stuck claw from pushing against the naturally positioned roller, reducing the likelihood of roller wear and ensuring smooth movement of all clutch components during high-frequency switching, thereby improving the reliability and service life of the clutch.

[0012] Optionally, a positioning member for maintaining a stable state of the drive ring is provided between the anti-jamming claw and the second protrusion.

[0013] By adopting the above technical solution, the positioning piece arranged between the anti-jamming claw and the second protrusion makes the driving ring more stable during rotation, effectively preventing the driving ring from shaking or offsetting under unexpected circumstances, and further improving the working reliability and operating accuracy of the clutch.

[0014] Optionally, the positioning member is a compression spring, one end of the compression spring is connected to the second protrusion, and the other end abuts against the anti-jamming claw, and the axes of the two compression springs located on the same second protrusion coincide.

[0015] By adopting the above-mentioned technical solution, under the action of the compression springs with two coincident axes, the anti-jamming claws located on both sides of the second protrusion are subjected to uniform support force, thereby enhancing the stability of the anti-jamming claws relative to the second protrusion, effectively preventing the drive ring from shaking or shifting under unexpected circumstances, and further improving the working reliability and operating accuracy of the clutch.

[0016] Optionally, a handle is inserted into the axis of the driving ring, and the handle is rotationally engaged with the driving gear.

[0017] By adopting this technical solution, when manual operation is required, the handle can be used to directly drive the drive ring, which in turn drives the second protrusion to rotate synchronously through the insertion slot, achieving synchronous rotation of the star wheel and ensuring the normal operation of the clutch. This design not only increases the diversity of operation methods, but also improves the adaptability and reliability of the clutch under different working conditions.

[0018] Optionally, the reset member is a spring, one end of the spring is connected to the side wall of the first protrusion, and the other end abuts against the roller.

[0019] By adopting the above technical solution, a spring is used as the reset member, so that the roller can be quickly wedged in the wedge-shaped gap between the star wheel and the driving gear under the action of the spring force, ensuring that the clutch is reliably engaged when powered and effectively transmits power.

[0020] Optionally, the reset member is a V-shaped elastic sheet, one side of the elastic sheet is connected to the side wall of the first protrusion, and the other side abuts against the roller.

[0021] By adopting the above technical solution, the reset member adopts a V-shaped elastic sheet, so that the elastic sheet can provide a stable reset force when the roller is subjected to forces in different directions, reduce the sticking phenomenon of the roller during movement, and improve the working stability and reliability of the clutch.

[0022] Optionally, the free end of the elastic sheet near the side of the roller is hinged with a tray, the tray is arranged in an arc shape and is made of polytetrafluoroethylene material, and the arc center of the tray is located near the side of the roller, and the roller abuts on the inner arc surface of the tray.

[0023] By adopting the above technical scheme, the setting of the tray enables the roller to smoothly slide on the inner arc surface of the tray when the roller is subjected to the spring force and the friction force, effectively reduces the wear of the contact surface between the roller and the elastic sheet, and improves the movement precision and stability of the roller. Meanwhile, the polytetrafluoroethylene material has good self-lubricating property and wear resistance, further reduces the frictional resistance between the roller and the tray, and enhances the reliability and service life of the clutch.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. When power is on, the external gear set drives the driving gear to rotate, and the roller is wedged in the wedge-shaped gap between the star wheel and the driving gear under the action of the reset member and the friction force, thereby driving the star wheel to rotate, at this time, the clutch is in the engaged state, and the power is transmitted from the driving gear to the main shaft connected with the star wheel; when power is off, the driving ring is driven to rotate, the side wall of the insertion slot on the driving ring pushes the second protrusion, thereby realizing synchronous rotation of the star wheel, and finally realizing transmission of power from the driving gear to the main shaft connected with the star wheel to make the clutch in the engaged state. The same effect as the electric operation is realized, thereby improving the flexibility and reliability of the clutch. This design not only reduces the stress frequency of the roller and the reset member, but also avoids the opening and closing operation through the roller and the reset member when the roller and the reset member are damaged, thereby prolonging the service life of the clutch and improving the operation precision and stability of the entire clutch.

[0026] 2. When the roller is stuck, the anti-sticking claw pushes the roller out of the wedge-shaped gap by rotating the driving ring, so that the wedge-tightening force between the roller and the star wheel and the driving gear disappears, thereby releasing the stuck state of the roller. The gap between the second protrusion and the side wall of the insertion slot is smaller than the gap between the anti-sticking claw and the roller, so that when power is off, the transmission operation between the driving ring and the star wheel can avoid the anti-sticking claw pushing the roller in the natural state, thereby reducing the possibility of wear of the roller and ensuring smooth movement of each component of the clutch during high-frequency switching, thereby improving the reliability and service life of the clutch.

[0027] 3. The positioning member arranged between the anti-sticking claw and the second protrusion enables the driving ring to rotate more stably, effectively prevents the driving ring from shaking or deviating in unintended situations, and further improves the working reliability and operation precision of the clutch. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application.

[0029] Figure 2 It is a cross-sectional view showing the positional relationship between the star wheel, the driving gear and the drive ring in Example 1 of the present application.

[0030] Figure 3 This is a schematic diagram showing the connection relationship between the star wheel and the drive ring in Example 1 of the present application.

[0031] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0032] Figure 5 This is a schematic diagram showing the positional relationship between the elastic sheet, tray and roller in Example 2 of the present application.

[0033] Description of reference numerals:

[0034] 1. Spindle; 2. Star wheel; 21. First protrusion; 22. Second protrusion; 3. Driving gear; 4. Drive ring; 41. Insertion slot; 42. Anti-jamming claw; 5. Handle; 6. Wedge-shaped space; 7. Roller; 8. Reset member; 81. Spring; 82. Elastic sheet; 821. Tray; 9. Positioning member. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The embodiment of the present application discloses a clutch operating mechanism.

[0037] Example 1

[0038] Reference Figure 1 、 Figure 2 and Figure 3 A clutch operating mechanism includes a main shaft 1, a star wheel 2, and a driving gear 3. The main shaft 1 is fixedly inserted at the axis of the star wheel 2, and a drive ring 4 is coaxially arranged on the side of the star wheel 2 facing away from the main shaft 1. A handle 5 is fixedly inserted at the axis of the drive ring 4. The star wheel 2 and the drive ring 4 are both rotatably mounted within the driving gear 3. The main shaft 1 and the handle 5 are both rotatably inserted through the driving gear 3. A plurality of radially distributed first and second protrusions 21 and 22 are integrally formed on the outer ring sidewall of the star wheel 2. The first and second protrusions 21 and 22 are staggered. In this embodiment, two first protrusions 21 and two second protrusions 22 are used as an example, and all of them are rotatably engaged with the driving gear 3. The outer wall of the star wheel 2 near the first protrusion 21 is provided with an inclined plane, forming a wedge-shaped space 6 between the star wheel 2 and the driving gear 3. A roller 7 is disposed in the wedge-shaped space 6, and a reset member 8 is disposed between the roller 7 and the sidewall of the first protrusion 21. The driving ring 4 defines a plugging slot 41 corresponding to each second protrusion 22 , and the second protrusion 22 is plugged into the corresponding plugging slot 41 .

[0039] Reference Figure 1 and Figure 2 When power is turned on, the external gear set drives the driving gear 3 to rotate. Under the action of the reset member 8 and friction force, the roller 7 will be wedged in the wedge-shaped gap between the star wheel 2 and the driving gear 3, thereby driving the star wheel 2 to rotate together. At this time, the clutch is in the engaged state, and the power is transmitted from the driving gear 3 to the main shaft 1 connected to the star wheel 2.

[0040] Reference Figure 1 and Figure 3 When the power is off, turn the handle 5 to drive the drive ring 4 to rotate, and the side wall of the plug-in groove 41 on the drive ring 4 pushes the second protrusion 22, thereby realizing the synchronous rotation of the star wheel 2, and finally transmitting the power from the driving gear 3 to the main shaft 1 connected to the star wheel 2, so that the clutch is in the engaged state.

[0041] Reference Figure 2 and Figure 3 In this embodiment, the reset member 8 is a spring 81, one end of which is fixed to the side wall of the first protrusion 21, and the other end abuts against the roller 7. Its elastic force can ensure that the roller 7 can be wedged in the wedge-shaped gap between the star wheel 2 and the driving gear 3.

[0042] Reference Figure 2 and Figure 3 In order to ensure smooth movement of various components of the clutch during high-frequency switching, an anti-jamming claw 42 is provided between each second protrusion 22 and the roller 7. The anti-jamming claw 42 is integrally formed on the drive ring 4, and the gap between the second protrusion 22 and the side wall of the plug-in slot 41 is smaller than the gap between the anti-jamming claw 42 and the roller 7.

[0043] Reference Figure 3 In order to prevent the drive ring 4 from shaking or shifting under unexpected circumstances, a positioning member 9 is provided between the anti-jamming claw 42 and the second protrusion 22. The positioning member 9 in this embodiment is a compression spring, one end of the compression spring is connected to the second protrusion 22, and the other end abuts against the anti-jamming claw 42, and the axes of the two compression springs located on the same second protrusion 22 coincide.

[0044] The operating principle of the clutch of an operating mechanism in an embodiment of the present application is as follows: when the clutch is energized, the external gear set drives the driving gear 3 to rotate. Under the action of the spring 81 force and friction, the roller 7 is wedged in the wedge-shaped gap between the star wheel 2 and the driving gear 3, thereby driving the star wheel 2 to rotate together. At this time, the clutch is in the engaged state, and power is transmitted from the driving gear 3 to the main shaft 1 connected to the star wheel 2. When the power is off, the handle 5 is manually operated, the drive ring 4 rotates, and the side wall of the plug-in groove 41 on the drive ring 4 pushes the second protrusion 22, thereby achieving synchronous rotation of the star wheel 2, and ultimately achieving power transmission from the driving gear 3 to the main shaft 1 connected to the star wheel 2, so that the clutch is in the engaged state. This design not only reduces the frequency of force applied to the roller 7 and spring 81, but also avoids the opening and closing operation through the roller 7 and spring 81 when the roller 7 and spring 81 are damaged. It not only extends the service life of the clutch, but also improves the operating accuracy and stability of the entire clutch.

[0045] Example 2

[0046] Reference Figure 4 and Figure 5 The difference between this embodiment and the first embodiment lies in the reset member 8. The reset member 8 in this embodiment is a V-shaped elastic piece 82. One side of the elastic piece 82 is fixed to the side wall of the first protrusion 21, and the other side abuts against the roller 7. A tray 821 is hingedly connected to the free end of the elastic piece 82 near the roller 7. The tray 821 is arc-shaped and made of polytetrafluoroethylene. The center of the arc is located near the roller 7. This allows the roller 7 to slide smoothly on the inner arc surface of the tray 821 when subjected to the force of the spring 81 and the friction force.

[0047] The implementation principle of Example 2 is: the setting of the V-shaped elastic sheet 82 and the tray 821 enables the roller 7 to slide smoothly on the inner arc surface of the tray 821 when subjected to the force of the spring 81 and the friction force, effectively reducing the wear of the contact surface between the roller 7 and the elastic sheet 82, and improving the movement accuracy and stability of the roller 7.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A clutch operating mechanism, comprising a main shaft (1), a star wheel (2) sleeved on the main shaft (1), and a driving gear (3) coaxially assembled outside the star wheel (2), characterized in that The outer ring side wall of the star wheel (2) is provided with a plurality of radially distributed first protrusions (21), and the first protrusions (21) are rotatably matched with the driving gear (3). The outer side wall of the star wheel (2) near the first protrusions (21) is provided with an inclined plane, and a wedge-shaped space (6) is formed between the star wheel (2) and the driving gear (3). A roller (7) is provided in the wedge-shaped space (6), and a reset member (8) is provided between the roller (7) and the side wall of the first protrusion (21). A driving ring (4) is coaxially provided on the side of the star wheel (2) away from the main shaft (1). ), the driving ring (4) is rotatably arranged in the driving gear (3), a second protrusion (22) is arranged between two adjacent first protrusions (21), the second protrusion (22) is arranged on the outer ring side wall of the star wheel (2), and is rotatably matched with the driving gear (3), the driving ring (4) is provided with a plug-in groove (41) corresponding to each second protrusion (22), the second protrusion (22) is plugged into the corresponding plug-in groove (41), and when the driving ring (4) rotates, the side wall of the plug-in groove (41) pushes the second protrusion (22) to rotate synchronously.

2. A clutch operating mechanism according to claim 1, characterized in that An anti-jamming claw (42) is provided between each second protrusion (22) and the roller (7), the anti-jamming claw (42) is connected to the drive ring (4), and the gap between the second protrusion (22) and the side wall of the insertion groove (41) is smaller than the gap between the anti-jamming claw (42) and the roller (7).

3. A clutch operating mechanism according to claim 2, characterized in that A positioning member (9) for maintaining the driving ring (4) in a stable state is provided between the anti-jamming claw (42) and the second protrusion (22).

4. A clutch operating mechanism according to claim 3, characterized in that The positioning member (9) is a compression spring, one end of which is connected to the second protrusion (22), and the other end abuts against the anti-jamming claw (42), and the axes of the two compression springs located on the same second protrusion (22) coincide.

5. The clutch of the operating mechanism according to claim 1, characterized in that A handle (5) is inserted into the axis of the driving ring (4), and the handle (5) is rotationally matched with the driving gear (3).

6. The clutch of the operating mechanism according to claim 1, characterized in that The reset member (8) is a spring (81), one end of the spring (81) is connected to the side wall of the first protrusion (21), and the other end abuts against the roller (7).

7. The clutch of the operating mechanism according to claim 1, characterized in that The reset member (8) is a V-shaped elastic sheet (82), one side of the elastic sheet (82) is connected to the side wall of the first protrusion (21), and the other side abuts against the roller (7).

8. The clutch of the operating mechanism according to claim 7, characterized in that The free end of the elastic sheet (82) close to the roller (7) is hinged with a tray (821), and the tray (821) is arranged in an arc shape and is made of polytetrafluoroethylene. The center of the arc is located on the side close to the roller (7), and the roller (7) abuts against the inner arc surface of the tray (821).

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