CN217982217U - Manual automatic switching device of multi-rotation electric actuator - Google Patents

Abstract

The utility model discloses a many gyration electric actuator hand automatic switching control equipment, including the executor main part of installing the handle axle, shifting block and plane spiral spring are installed to the second end of handle axle, the first end and the handle axle fixed connection of shifting block, second end fixed mounting have the plectrum, the free end and the turbine phase-match of fixed mounting at the main epaxial of executor main part of plectrum, the separation and reunion piece is installed through the spline to the main shaft, the separation and reunion piece passes through the spline and installs on the main shaft and be located the top of turbine to end the phase-match with the second of shifting block. The utility model discloses simple structure, spare part is few, is difficult for breaking down, and the reliability is high, and easy to maintain can realize the automatic switch-over from manual mode to automatic mode.

Description

Manual automatic switching device of multi-rotation electric actuator

Technical Field

The utility model relates to an electric actuator technical field, in particular to many gyration electric actuator hand automatic switching control equipment.

Background

The existing electric actuators are generally provided with an automatic execution mode and a manual execution mode, the manual execution mode is used for replacing an automatic execution structure when power is cut off or the automatic execution structure breaks down, and a manual-automatic switching device is needed for switching the two modes. However, the conventional automatic switching device has a complicated structure, and for example, a manual/electric clutch device for an electric actuator disclosed in chinese patent application publication No. CN107314058a is known. The Chinese utility model patent with publication number CN211901375U discloses a novel manual-automatic switching mechanism for an actuator, which comprises a main shaft and a shifting fork assembly, wherein an output shaft is arranged outside the main shaft, and a worm gear assembly is arranged outside the lower part of the output shaft; the lower part of the worm wheel component is meshed with the large bevel gear; a sliding block is arranged on the outer side of the output shaft and above the worm gear assembly, and a fixed groove is arranged on the right lower side of the sliding block; meshing teeth are arranged below the sliding block and can be matched with the worm wheel assembly; a shifting fork assembly is arranged between the worm wheel assembly and the sliding block and rotates through a switching handle; the left end of the shifting fork component is provided with a shifting fork which is arranged in the fixed groove; a shifting fork pin is arranged below the shifting fork assembly, a split elastic pin is arranged in the shifting fork pin, a small spring is arranged between the split elastic pin and the shifting fork pin, and the split elastic pin is limited through a stop column arranged on the shifting fork pin. The device is relatively simple in structure, but the manual-automatic switching mechanism cannot be automatically switched back.

Disclosure of Invention

The utility model discloses a remedy prior art not enough, provide a many gyration electric actuator hand automatic switching control equipment.

The utility model discloses a realize through following technical scheme:

the automatic manual switching device of the multi-turn electric actuator comprises an actuator body provided with a handle shaft, wherein a shifting block and a flat spiral spring are arranged at the second end of the handle shaft, the first end of the shifting block is fixedly connected with the handle shaft, a shifting sheet is fixedly arranged at the second end of the shifting block, the free end of the shifting sheet is matched with a turbine fixedly arranged on a main shaft of the actuator body, a clutch piece is arranged on the main shaft through a spline, and the clutch piece is arranged on the main shaft through the spline, positioned above the turbine and matched with the second end of the shifting block.

The first end of the clutch piece is matched with a hand wheel shaft arranged on the clutch main body, and the second end of the clutch piece is matched with the turbine.

The turbine comprises a turbine main body and an eccentric circular table integrally formed with the turbine main body, and a supporting part matched with the supporting shifting piece is formed between the eccentric circular table and the turbine main body.

The clutch piece is characterized by further comprising a return spring, the return spring is located on one side, far away from the clutch piece, the first end of the return spring is abutted against the first end of the clutch piece, and the second end of the return spring is fixed on the spindle.

The first end of the handle shaft is provided with a handle.

The handle is provided with a handle ball.

The poking sheet is B-shaped.

The utility model discloses following technological effect has:

the utility model has simple structure, few parts, high reliability and easy maintenance, and is not easy to break down; the handle is rotated, the shifting block shifts the clutch piece to be contacted with the hand wheel shaft, the shifting sheet is supported on the turbine main body, and the clutch piece is supported to be always contacted with the hand wheel shaft to enter a manual mode; after the turbine is electrified, the eccentric table is rotated by the turbine to extrude the shifting sheet down the turbine main body, the shifting sheet, the clutch returns to the initial position under the action of the elastic force of the scroll spring and the reset spring, and the automatic switching from the manual mode to the automatic mode is realized.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic installation diagram of the manual-automatic switching device.

FIG. 2 isbase:Sub>A schematic cross-sectional view of A-A of FIG. 1.

Fig. 3 is a schematic diagram of the structure at B in fig. 1.

Fig. 4 is a schematic view of the structure of the turbine.

In the figure, 1-handle cap, 2-inner hexagon screw, 3-plastic cover, 4-handle shaft, 5-handle, 6-handle ball, 7-skeleton oil seal, 8-O type sealing ring, 9-plane spiral spring, 10-shifting block, 11-pin hole, 12-shifting piece, 13-clutch piece, 14-turbine, 15-reset spring, 16-cylindrical pin, 17-limit lug, 18-center hole, 19-eccentric circular truncated cone, 20-turbine body, 21-clutch lug and 22-support part.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 to 4 show an embodiment of the present invention. This embodiment provides a manual-automatic switching device of a multi-turn electric actuator, comprising an actuator body on which a handle shaft 4 is mounted, the handle shaft 4 being freely rotatable about its axis. As shown in the attached figure 2, the actuator main body is provided with a shaft hole, the handle shaft 4 is arranged in the shaft hole, the first end of the handle shaft extends out of the shaft hole, and a framework oil seal 7 and an O-shaped seal ring 8 are arranged between the handle shaft 4 and the shaft hole.

The first end of handle shaft 4 and the first end fixed connection of handle 5, the first end of specific handle shaft 4 is equipped with the connecting hole, and the first end of handle 5 is inserted in the connecting hole. The handle 5 and the connecting hole can be connected in a mode of interference fit, jackscrew, thread and the like, and a handle ball 6 is installed at the second end of the handle 5.

The second end of the handle shaft 4 is fitted with a dial 10 and a flat spiral spring 9, wherein the flat spiral spring 9 is located between the dial 10 and the handle 5. One end of the flat spiral spring 9 is fixed on the handle shaft 4, the other end is fixed on the actuator main body, when the handle shaft 4 rotates, the flat spiral spring 9 generates resilience force to enable the handle shaft 4 to return. The first end of the shifting block 10 is fixedly mounted at the second end of the handle shaft 4 through a limiting projection 17, for example, the limiting projection 17 is clamped in a limiting groove of the handle shaft 4 in an interference fit manner, but other prior arts may also be used for fixing mounting. A shifting piece 12 is fixedly mounted at the second end of the shifting block 10, a pin hole 11 is formed in the second end of the specific shifting block 10, a cylindrical pin 16 is mounted in the pin hole 11, and the shifting piece 12 is fixedly mounted on the shifting block 10 through the cylindrical pin 16. The plectrum 12 is B-shaped, and each bending part is in smooth transition, and the first end of the plectrum is fixedly arranged on the plectrum 10, and the second end is free and matched with a turbine 14 fixedly arranged on a main shaft of the actuator main body.

Also includes clutch 13 and return spring 15; the turbine 14 and the clutch piece 13 are both mounted on a main shaft of the actuator, wherein the turbine 14 is fixedly mounted on the main shaft, and the clutch piece 13 is mounted on the main shaft through a spline, is positioned above the turbine 14 and is matched with the second end of the shifting block 10. The reset spring 15 is positioned on one side far away from the clutch piece 13 and sleeved on the main shaft, the first end of the reset spring 15 is abutted against the first end of the clutch piece 13, and the second end of the reset spring is fixed on the main shaft. The spring force of the return spring 15 keeps the clutch member 13 approaching the turbine 14. The clutch member 13 has a first end that mates with a hand wheel shaft mounted on the clutch body and a second end that mates with the turbine 14.

The turbine 14 is driven by an electric motor and is configured as shown in fig. 4, and a central hole 18 is formed in the middle thereof for mounting the turbine 14 on the main shaft. The worm wheel 14 includes a worm wheel body 20 and an eccentric circular truncated cone 19 integrally formed with the worm wheel body 20, and a support portion 22 for supporting the driver bit 12 is formed between the eccentric circular truncated cone 19 and the worm wheel body 20 because the center of the eccentric circular truncated cone does not overlap with the worm wheel body 20. A plurality of clutch lugs matched with the second end of the clutch piece 13 are fixedly arranged on the eccentric round platform 19.

Still install handle block 1 through socket head cap screw in the clutch main part, be equipped with the arc type through-hole that matches with handle 5 on the handle block 1, provide the space for handle 5 rotates.

When the manual mode needs to be switched, the handle 5 is rotated, the handle 5 drives the shifting block 10 to rotate, the second end of the shifting block 10 upwards shifts the clutch piece 13 to be in contact with the hand wheel shaft, meanwhile, the second end of the shifting piece 12 is lapped on the supporting part, and the shifting block 10 is supported to keep the current position, namely the state shown in the attached drawing 1. The manual mode is entered. When the electric motor is powered on, the motor drives the turbine 14 to rotate, the eccentric round platform 19 on the turbine 14 extrudes the second end of the poking sheet 12 to the supporting part 22, at the moment, the handle shaft restores the original position under the action of the flat spiral spring 9, the second end of the poking sheet 12 also moves leftwards to restore the original position, and under the action of gravity and the elastic force of the return spring 15, the clutch part 13 falls back to the original position to be contacted with the turbine 14, and then the automatic mode is achieved.

Claims (6)

1. The utility model provides a many gyration electric actuator hand automatic switching control equipment which characterized in that: the actuator comprises an actuator body provided with a handle shaft (4), wherein a shifting block (10) and a flat spiral spring (9) are arranged at the second end of the handle shaft (4), the first end of the shifting block (10) is fixedly connected with the handle shaft (4), a shifting sheet (12) is fixedly arranged at the second end, the free end of the shifting sheet (12) is matched with a turbine (14) fixedly arranged on a main shaft of the actuator body, a clutch piece (13) is arranged on the main shaft through a spline, the clutch piece (13) is arranged on the main shaft through the spline and positioned above the turbine (14) and is matched with the second end of the shifting block (10).

2. The manual-automatic switching device of a multi-turn electric actuator according to claim 1, wherein: the first end of the clutch piece (13) is matched with a hand wheel shaft arranged on the clutch body, and the second end is matched with the turbine (14).

3. The manual-automatic switching device of a multi-turn electric actuator according to claim 1 or 2, characterized in that: the turbine (14) comprises a turbine main body (20) and an eccentric circular truncated cone (19) integrally formed with the turbine main body (20), and a supporting portion (22) matched with the supporting plectrum (12) is formed between the eccentric circular truncated cone (19) and the turbine main body (20).

4. The manual-automatic switching device of a multi-turn electric actuator according to claim 1 or 2, characterized in that: still include reset spring (15), reset spring (15) are located clutch piece (13) and keep away from one side, the first end of reset spring (15) offsets with the first end of clutch piece (13), and the second end is fixed on the main shaft.

5. The manual-automatic switching device of a multi-turn electric actuator according to claim 1, wherein: the first end of the handle shaft (4) is provided with a handle (5).

6. The manual-automatic switching device of a multi-turn electric actuator according to claim 5, wherein: the handle (5) is provided with a handle ball (6).

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