Automatic separation hand wheel clutch device

Abstract

The utility model relates to an automatic separation hand wheel clutch device which comprises a handle, a hand wheel, a gland, a wheel shaft, a base and a wheel shaft clutch, the gland is arranged at the upper end of the wheel shaft, the lower end of the wheel shaft penetrates through the base to be fixedly connected with the wheel shaft clutch, a pressing disc is arranged on the wheel shaft, and a first spring is arranged between the pressing disc and a positioning shaft sleeve. A trapezoidal baffle plate is arranged on the wheel shaft part above the pressure plate; limiting blocks are installed on the base on the two sides of the positioning shaft sleeve, and power-off switches are fixedly installed on the limiting blocks. An electromagnetic generator is arranged on the upper plane of the base on one side of the wheel shaft, the electromagnetic generator comprises a main shell, a shell support and an electromagnetic coil, the electromagnetic generator is fixed on the base through the shell support, the main shell is of a barrel-shaped structure, an opening faces the wheel shaft, the electromagnetic coil is installed in the main shell, and a spring seat is fixedly installed at the left end of an inner cavity of the main shell; the spring seat is fixedly connected with a second spring, the other end of the second spring is connected with a columnar iron core, and the columnar iron core is matched with the opening channel of the main shell in size.

Description

Technical Field

[0001] The utility model relates to the field of mechanical clutch devices, in particular to a hand wheel clutch device which can be separated automatically. Background Art

[0002] Nowadays, more and more factories have adopted automated control, and manual operation has been replaced by machinery or automated equipment. For example, in the field of valves, electric actuators have begun to be used to control the opening and closing of valves, reducing the operation of workers, which is both labor-saving and safe. However, in the event of maintenance, power outages, damage to the actuator motor, etc., the opening and closing of the valve needs to be manually operated. The commonly used method is to connect the output shaft of the handwheel clutch device with the input shaft of the actuator, and turn the handwheel to drive the actuator input shaft to rotate, thereby driving the valve to open and close. However, after manual operation, it is often easy to forget to separate the output shaft of the handwheel clutch device from the actuator. After the motor 23 is powered on again, the input shaft of the actuator will begin to rotate automatically, thereby driving the handwheel to rotate together, causing a safety accident. Utility Model Content

[0003] The utility model aims to design a hand wheel clutch device which can be automatically separated from an actuator in view of the defects of the prior art.

[0004] The technical scheme of the utility model is as follows: an automatic separation handwheel clutch device, comprising a handle, a handwheel, a pressure cover, a wheel axle, a base and a wheel axle clutch, wherein the handle is arranged on the handwheel, the handwheel and the connecting frame are integrally formed, the handwheel is fixed to the wheel axle through the connecting frame, a pressure cover is arranged on the upper end of the wheel axle, the lower end of the wheel axle passes through the base and is fixedly connected to the wheel axle clutch, the wheel axle clutch is provided with a notch matching the actuator clutch, a wheel axle positioning sleeve is fixedly arranged on the base, and the wheel axle is characterized in that a pressure plate is arranged on the wheel axle, a No. 1 spring is arranged between the pressure plate and the positioning sleeve, and a trapezoidal baffle is arranged on the wheel axle part above the pressure plate; A limit block is fixedly installed on the upper plane of the base on both sides of the positioning sleeve, and a power-off switch is fixedly installed on the limit block; an electromagnetic generator is provided on the upper plane of the base on one side of the wheel axle, and the electromagnetic generator includes a main shell, a shell bracket and an electromagnetic coil. The electromagnetic generator is fixed to the base through the shell bracket. The main shell is a barrel-shaped structure with an opening facing the wheel axle. The main shell is equipped with an electromagnetic coil. A spring seat is fixedly installed on the left end of the inner cavity of the main shell, and the spring seat is fixedly connected to a No. 2 spring. The other end of the No. 2 spring is connected to a columnar iron core, and the size of the columnar iron core matches that of the opening channel of the main shell.

[0005] Furthermore, a baffle is provided at the left end of the columnar iron core, which is integrally formed with the columnar iron core. The diameter of the baffle is slightly larger than the diameter of the columnar iron core body. A spring cavity is formed between the baffle and the main shell. The diameter of the spring cavity matches the diameter of the baffle and is slightly larger than the diameter of the opening channel of the main shell. A step is formed between the spring cavity and the opening channel of the main shell.

[0006] The advantages of the utility model are that an electromagnetic generator is arranged on one side of the wheel axle, and the movement displacement of the columnar iron core can be controlled by turning on and off the power through the cooperation of the electromagnetic coil and the columnar iron core. When the pressure cover is pressed to push the wheel axle clutch and the actuator clutch to close, the electromagnetic generator is in a power-off state, and the No. 2 spring pushes the columnar iron core to move toward the wheel axle. At this time, the height of the trapezoidal baffle is lower than the columnar iron core, and the upper plane of the trapezoidal baffle conflicts with the lower plane of the columnar magnet, so that the handwheel clutch device as a whole remains in a downward pressure state; when the external power supply is energized, the power-on command is first transmitted to the electromagnetic generator, and the electromagnetic coil is energized, so that the columnar iron core compresses the No. 2 spring and moves away from the wheel axle. After the columnar iron core is separated from the trapezoidal baffle, the No. 1 spring pushes the wheel axle to move upward, so that the wheel axle clutch and the actuator clutch are automatically separated, thereby avoiding safety accidents caused by forgetting to separate the clutch during manual operation, resulting in the electric actuator driving the handwheel to rotate together after power is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the utility model.

[0008] Figure 2 It is a structural schematic diagram of the electromagnetic generator of the utility model.

[0009] Figure 3 This is a circuit diagram of the utility model.

[0010] In the figure, 1, handle, 2, pressure cover, 3, hand wheel, 4, connecting frame, 5, wheel axle, 6, trapezoidal baffle, 7, pressure plate, 8, No. 1 spring, 9, positioning sleeve, 10, base, 11, wheel axle clutch, 12, limit block, 13, power-off switch, 14, electromagnetic generator, 141, main housing, 142, housing bracket, 143, electromagnetic coil, 144, step, 15, columnar iron core, 16, baffle, 17, No. 2 spring, 18, actuator clutch, 19, input shaft, 20, spring seat, 21, main switch, 22, main power supply, 23, motor, 24, connecting hole. DETAILED DESCRIPTION

[0011] The utility model is further described according to the accompanying drawings.

[0012] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0013] like Figure 1The automatic separation handwheel clutch device shown in the figure comprises a handle 1, a handwheel 3, a pressure cover 2, an axle 5, a base 10 and an axle clutch 11, wherein the handle 1 is arranged on the handwheel 3, the handwheel 3 and the connecting frame 4 are integrally formed, the handwheel 3 is fixed to the axle 5 through the connecting frame 4, and can be fixed by welding, bolt connection, etc.; the upper end of the axle 5 is provided with a pressure cover 2, the lower end of the axle 5 passes through the base 10 and is fixedly connected to the axle clutch 11, the axle clutch 11 is provided with a notch matching the actuator clutch 18, and the actuator clutch 18 is fixedly connected to the input shaft 19 of the actuator; a plurality of connecting holes 14 are provided on the base 10, and a wheel axle 5 positioning sleeve 9 is fixedly arranged on the base 10 and fixed by bolts; mainly, a pressure plate 7 is provided on the wheel axle 5, a No. 1 spring 8 is provided between the pressure plate 7 and the positioning sleeve 9, and a trapezoidal baffle 6 is provided on the wheel axle 5 above the pressure plate 7, and the pressure plate 7 and the trapezoidal baffle 6 are fixed to the wheel axle 5 by welding or the like; a limit block 12 is fixedly installed on the plane of the base 10 on both sides of the positioning sleeve 9, and the limit block 12 The electromagnetic generator 14 is fixed on the base 10 by bolts, and a power-off switch 13 is fixed on the limit block 12. The overall circuit is that the electromagnetic generator 14 and the motor 23 of the actuator share a main power supply 22 and a main switch 21. The power-off switch 13 and the motor 23 of the actuator are connected in series, which is a secondary switch for controlling the power on and off of the actuator. The power-off switch 13 and the electromagnetic generator 14 are connected in parallel; an electromagnetic generator 14 is provided on the upper plane of the base 10 on one side of the wheel axle 5, and the electromagnetic generator 14 includes a main shell 141, a shell bracket 142 and an electromagnetic coil 143, the electromagnetic generator 14 is fixed to the base 10 through a shell bracket 142 and by bolts, the main shell 141 is a barrel-shaped structure with an opening facing the axle 5, the main shell 141 is equipped with an electromagnetic coil 143, a spring seat 20 is fixedly installed at the left end of the inner cavity of the main shell 141, the spring seat 20 is fixedly connected to the No. 2 spring 17, the other end of the No. 2 spring 17 is connected to the columnar iron core 15, the columnar iron core 15 matches the size of the opening channel of the main shell 141, and the columnar iron core 15 can move along the opening channel.

[0014] Working principle: When the valve needs to be opened and closed manually, the external main power supply 22 is cut off, the electromagnetic generator 14 and the actuator motor 23 are in a non-working state, and the cylindrical iron core 15 is moved toward the axle 5 by the action of the second spring 17. The pressure cover 2 is pressed to make the axle 5 move downward as a whole, and the pressure plate 7 compresses the first spring 8. When the trapezoidal baffle 6 is lower than the cylindrical iron core 15, the cylindrical iron core 15 is completely ejected, and the axle 5 is prevented from returning to its original position by cooperating with the trapezoidal baffle 6. At this time, the pressure plate 7 presses the power-off switch 13, and the power-off switch 13 is in an off state. At the same time, the axle clutch 11 and the actuator clutch 18 are closed and in a closed state. Turning the handwheel 3 can drive the input shaft 1 of the actuator. 9 rotates to open and close the valve; when the manual operation is completed, when the valve is opened and closed next time by the actuator motor 23, the external main power supply 22 is energized, the electromagnetic generator 14 is energized first, and the electromagnetic coil 143 uses the electromagnetic principle to drive the columnar iron core 15 to move away from the wheel shaft 5. When the columnar iron core 15 is completely separated from the trapezoidal baffle 6, the pressure plate 7 is driven by the spring force of the first spring 8 to drive the wheel shaft 5 to move upward as a whole. During the process, the wheel shaft clutch 11 is separated from the actuator clutch 18, the pressure plate 7 is separated from the disconnect switch, and the power-off switch 13 is reconnected to the circuit to start the actuator motor 23. The above structure realizes the automatic separation function and greatly improves the safety performance.

[0015] The left end of the columnar core 15 is provided with a baffle 16, which is integrally formed with the columnar core 15, and the diameter of the baffle 16 is slightly larger than the main body diameter of the columnar core 15. A spring cavity is formed between the baffle 16 and the main housing 141, and the diameter of the spring cavity matches the diameter of the baffle 16, which is slightly larger than the diameter of the opening channel of the main housing 141, and a step 144 is formed between the spring cavity and the opening channel of the main housing 141. The cooperation between the baffle 16 and the step 144 can realize the limiting function, and prevent the columnar core 15 from hitting the wheel shaft 5 due to excessive spring force, thereby increasing unnecessary wear.

[0016] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. Any changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. An automatic separation handwheel clutch device, comprising a handle (1), a handwheel (3), a pressure cover (2), a wheel shaft (5), a base (10) and a wheel shaft clutch (11), wherein the handle (1) is arranged on the handwheel (3), the handwheel (3) and the connecting frame (4) are integrally formed, the handwheel (3) is fixed to the wheel shaft (5) through the connecting frame (4), the upper end of the wheel shaft (5) is provided with a pressure cover (2), the lower end of the wheel shaft (5) passes through the base (10) and is fixedly connected to the wheel shaft clutch (11), the wheel shaft clutch (11) is provided with a notch matching with an actuator clutch (18), and the actuator clutch (18) is fixedly connected to an input shaft (19) of the actuator; a plurality of connecting holes (24) are provided on the base (10), and a wheel shaft (5) positioning sleeve (9) is fixedly arranged on the base (10); the characteristics are: A pressure plate (7) is provided on the wheel axle (5), a first spring (8) is provided between the pressure plate (7) and the positioning sleeve (9), a trapezoidal baffle (6) is provided on the wheel axle (5) above the pressure plate (7), and the pressure plate (7) and the trapezoidal baffle (6) are fixed on the wheel axle (5); a limit block (12) is fixedly installed on the upper plane of the base (10) on both sides of the positioning sleeve (9), the limit block (12) is fixed on the base (10), and a power-off switch (13) is fixedly installed on the limit block (12); an electromagnetic generator (14) is provided on the upper plane of the base (10) on one side of the wheel axle (5), and the electromagnetic generator (14) includes a main housing (141 ), a housing support (142) and an electromagnetic coil (143), the electromagnetic generator (14) is fixed to the base (10) through the housing support (142) and by bolts, the main housing (141) is a barrel-shaped structure with an opening facing the axle (5), the electromagnetic coil (143) is installed in the main housing (141), a spring seat (20) is fixedly installed at the left end of the inner cavity of the main housing (141), the spring seat (20) is fixedly connected to the second spring (17), the other end of the second spring (17) is connected to the columnar iron core (15), the columnar iron core (15) matches the size of the opening channel of the main housing (141), and the columnar iron core (15) can move along the opening channel.

2. The automatic separation hand wheel clutch device according to claim 1 is characterized in that: A baffle (16) is provided at the left end of the columnar iron core (15). The baffle (16) and the columnar iron core (15) are integrally formed. The diameter of the baffle (16) is slightly larger than the diameter of the main body of the columnar iron core (15). A spring cavity is formed between the baffle (16) and the main housing (141). The diameter of the spring cavity matches the diameter of the baffle (16) and is slightly larger than the diameter of the opening channel of the main housing (141). A step (144) is formed between the spring cavity and the opening channel of the main housing (141).

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