Switching device of multi-rotation executing mechanism

Abstract

The utility model relates to the technical field of multi-rotation executing mechanisms, in particular to a switching device of a multi-rotation executing mechanism. Comprising a storage rod fixed to the end of a hand wheel, a driving gear fixed to the outer surface, close to the end, of the storage rod, a storage groove formed in the storage rod, a spring arranged at the upper end of a fixing rod, a tooth block fixed to the outer surface of the fixing rod, a worm gear fixed to the lower end of the fixing rod, a transmission gear arranged on the side of the fixing rod, and a transmission belt movably arranged on the outer surface of the transmission gear in a sleeving mode. The storage device has the beneficial effects that the storage rod is pressed through the hand wheel to move downwards along the axis of the fixing rod, the storage rod moves to enable a tooth block to be separated from a tooth groove, at the moment, limiting between the storage rod and the fixing rod disappears, meanwhile, a driving gear and a transmission gear are clamped, at the moment, the storage rod is driven to rotate through the hand wheel, and the transmission gear is driven to rotate through rotation of the storage rod; the transmission gear rotates to drive the worm to rotate through the transmission belt, and at the moment, switching of the execution mechanism body from automatic operation to manual operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-turn actuators, in particular to a switching device of a multi-turn actuator. Background Art

[0002] Multi-turn actuators are specially designed to drive multi-turn valves and can be used to drive gate valves, stop valves, control valves and similar applications.

[0003] In the prior art, Chinese utility model publication number CN219796287U discloses an intelligent electric actuator that can lock the valve's rotating screw on the flexible shaft connector by utilizing a limit plate in the connecting assembly in conjunction with a locking spring. This arrangement can adapt to the rotating screws of valves of different diameters, thereby increasing the scope of use of the device.

[0004] However, this type of electric actuator is completely driven by electricity and does not have a mechanical structure for manual drive. When a power outage occurs, the actuator cannot be used, causing certain inconveniences and having certain limitations. Utility Model Content

[0005] The purpose of the present utility model is to provide a switching device for a multi-turn actuator to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a switching device for a multi-turn actuator, the switching device for the multi-turn actuator comprising:

[0007] An actuator body, wherein a motor is fixed at one end of the actuator body, a worm is provided at the output end of the motor, a handwheel is inserted into the actuator body, a receiving rod is fixed at the end of the handwheel, a driving gear is fixed to the outer surface of the end of the receiving rod, and a receiving groove is provided inside the receiving rod;

[0008] A fixing rod, wherein a spring is provided at the upper end of the fixing rod, a tooth block is fixed on the outer surface of the fixing rod, a worm gear is fixed at the lower end of the fixing rod, a transmission gear is provided on the side of the fixing rod, and a transmission belt is provided on the outer surface of the transmission gear.

[0009] Preferably, the driving gear, worm wheel, transmission gear and worm are located inside the actuator body, the worm corresponds to and is clamped with the worm wheel, the end of the worm is sleeved with a transmission belt, and the other end of the transmission belt is sleeved on the outer surface of the transmission gear.

[0010] Preferably, the driving gear corresponds to and is clamped with the transmission gear, a notch is provided at the end of the receiving slot, a tooth groove is provided on the inner wall of the notch, and the tooth block corresponds to and is clamped with the tooth groove.

[0011] Preferably, the thickness of the notch is greater than the depth of the tooth groove, a spring is provided on the top surface of the inner wall of the receiving groove, and the fixing rod is movably provided on the inner wall of the receiving groove.

[0012] Preferably, a baffle is fixed to the upper end of the fixing rod, and the baffle corresponds to the receiving slot and is clamped to be movably connected.

[0013] Preferably, the diameter of the fixing rod is the same as the diameter of the notch, the diameter of the baffle is the same as the diameter of the receiving groove, and the diameter of the baffle is larger than the diameter of the fixing rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The storage rod is pressed by the handwheel to move it downward along the axis of the fixed rod. The movement of the storage rod will disengage the tooth block from the tooth groove. At this time, the limit between the storage rod and the fixed rod disappears. At the same time, the driving gear and the transmission gear are locked. At this time, the storage rod is driven to rotate by the handwheel, and the rotation of the storage rod will drive the transmission gear to rotate. The rotation of the transmission gear will drive the worm to rotate through the transmission belt. At this time, the actuator body is switched from automatic to manual. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the transmission assembly structure of the utility model;

[0018] Figure 3 This is an exploded perspective diagram of the transmission assembly structure of the utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the worm gear assembly structure of the utility model;

[0020] Figure 5 This is a cutaway perspective schematic diagram of the active gear assembly structure of the present invention.

[0021] In the figure: 1. Actuator body; 2. Handwheel; 3. Motor; 4. Storage rod; 5. Transmission belt; 6. Worm; 7. Fixed rod; 8. Driving gear; 9. Spring; 10. Transmission gear; 11. Worm wheel; 12. Baffle; 13. Gear block; 14. Storage groove; 15. Notch; 16. Tooth groove. DETAILED DESCRIPTION

[0022] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 5 The utility model provides a technical solution: a switching device for a multi-turn actuator.

[0024] In embodiment 1, a motor 3 is fixed at one end of the actuator body 1, a worm 6 is provided at the output end of the motor 3, a handwheel 2 is inserted into the actuator body 1, a storage rod 4 is fixed at the end of the handwheel 2, a driving gear 8 is fixed to the outer surface of the end of the storage rod 4, and a storage groove 14 is opened inside the storage rod 4.

[0025] A spring 9 is provided at the upper end of the fixed rod 7, a tooth block 13 is fixed to the outer surface of the fixed rod 7, a worm gear 11 is fixed to the lower end of the fixed rod 7, a transmission gear 10 is provided on the side of the fixed rod 7, and a transmission belt 5 is movably sleeved on the outer surface of the transmission gear 10.

[0026] On the basis of Example 1, in order to realize the switching between manual and automatic drive of the multi-turn actuator body 1, the driving gear 8, the worm wheel 11, the transmission gear 10 and the worm 6 are located inside the actuator body 1, the worm 6 corresponds to the worm wheel 11 and is clamped, and the end of the worm 6 is sleeved with a transmission belt 5, and the other end of the transmission belt 5 is sleeved on the outer surface of the transmission gear 10.

[0027] The driving gear 8 corresponds to and is locked with the transmission gear 10 . A notch 15 is provided at the end of the receiving groove 14 . A tooth groove 16 is provided on the inner wall of the notch 15 . The tooth block 13 corresponds to and is locked with the tooth groove 16 .

[0028] The thickness of the notch 15 is greater than the depth of the tooth groove 16 . A spring 9 is provided on the top surface of the inner wall of the receiving groove 14 , and the fixing rod 7 is movably provided on the inner wall of the receiving groove 14 .

[0029] A baffle 12 is fixed to the upper end of the fixing rod 7 , and the baffle 12 corresponds to and is locked with the receiving groove 14 , and is movably connected.

[0030] The diameter of the fixing rod 7 is the same as the diameter of the notch 15 , the diameter of the baffle 12 is the same as the diameter of the receiving groove 14 , and the diameter of the baffle 12 is larger than the diameter of the fixing rod 7 .

[0031] In actual use, when the actuator body 1 needs to be manually driven, the storage rod 4 is pressed by the handwheel 2 to move it downward along the axis of the fixed rod 7. The movement of the storage rod 4 will disengage the tooth block 13 from the tooth groove 16. At this time, the limit between the storage rod 4 and the fixed rod 7 disappears. At the same time, the driving gear 8 and the transmission gear 10 are locked. At this time, the storage rod 4 is driven to rotate by the handwheel 2. The rotation of the storage rod 4 will drive the transmission gear 10 to rotate. The rotation of the transmission gear 10 will drive the worm 6 to rotate through the transmission belt 5. At this time, the actuator body 1 is switched from automatic to manual.

[0032] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switching device for a multi-turn actuator, characterized in that: The switching device of the multi-turn actuator includes: An actuator body (1), wherein a motor (3) is fixed at one end of the actuator body (1), a worm (6) is provided at the output end of the motor (3), a hand wheel (2) is inserted into the actuator body (1), a receiving rod (4) is fixed at the end of the hand wheel (2), a driving gear (8) is fixed on the outer surface of the end of the receiving rod (4), and a receiving groove (14) is provided inside the receiving rod (4); A fixed rod (7) is provided with a spring (9) at the upper end of the fixed rod (7), a tooth block (13) is fixed on the outer surface of the fixed rod (7), a worm gear (11) is fixed on the lower end of the fixed rod (7), a transmission gear (10) is provided on the side of the fixed rod (7), and a transmission belt (5) is movably sleeved on the outer surface of the transmission gear (10).

2. The switching device of a multi-turn actuator according to claim 1, characterized in that: The driving gear (8), the worm wheel (11), the transmission gear (10) and the worm (6) are located inside the actuator body (1); the worm (6) corresponds to and is locked with the worm wheel (11); a transmission belt (5) is sleeved on the end of the worm (6); and the other end of the transmission belt (5) is sleeved on the outer surface of the transmission gear (10).

3. The switching device of a multi-turn actuator according to claim 2, characterized in that: The driving gear (8) corresponds to and is locked with the transmission gear (10); a notch (15) is provided at the end of the receiving groove (14); a tooth groove (16) is provided on the inner wall of the notch (15); and the tooth block (13) corresponds to and is locked with the tooth groove (16).

4. The switching device of a multi-turn actuator according to claim 3, characterized in that: The thickness of the notch (15) is greater than the depth of the tooth groove (16); a spring (9) is provided on the top surface of the inner wall of the receiving groove (14); and the fixing rod (7) is movably provided on the inner wall of the receiving groove (14).

5. The switching device of a multi-turn actuator according to claim 4, characterized in that: A baffle (12) is fixed to the upper end of the fixing rod (7), and the baffle (12) corresponds to and is locked with the receiving groove (14) to be movably connected.

6. The switching device of a multi-turn actuator according to claim 5, characterized in that: The diameter of the fixing rod (7) is the same as the diameter of the notch (15), the diameter of the baffle (12) is the same as the diameter of the receiving groove (14), and the diameter of the baffle (12) is larger than the diameter of the fixing rod (7).

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