Electric actuating mechanism
By using a wheel train composed of multiple pairs of gears in the electric actuator for variable speed transmission and reasonably arranging the equipment position, the problem of unreasonable multi-stage gear transmission layout in the prior art is solved, and the actuator has small size, simple structure and reasonable layout effects are achieved.
Patent Information
- Application Number
- CN202421942552.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-12
AI Technical Summary
When existing electric actuators require multi-stage gear transmission, they have unreasonable layout, resulting in complex structure, huge and large space-occupation problems.
An electric actuator is designed, using a gear train composed of multiple pairs of gears for variable speed transmission. The gears are distributed in front, rear and left and right, making reasonable use of the overlapping space during meshing, and the motor and worm gear mechanism are set horizontally to avoid additional space occupied.
Through compact gear layout and reasonable equipment position arrangement, the overall size of the actuator is small, simple structure and reasonable layout.
Smart Images
Figure CN223019584U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve actuators, in particular to an electric actuator. Background Technique
[0002] An electric actuator uses electricity and converts it into a driving effect through a motor, a cylinder or other devices. The commonly used actuator is used in cooperation with a valve to drive the valve to the fully open or fully closed position.
[0003] An actuator is an essential and important part of an automatic control system. The existing actuators generally use a fixed-axis gear train to obtain a large transmission ratio, speed change and commutation. However, when multi-stage gear transmission is required, there is an unreasonable layout situation, resulting in a complex and large structure of the whole device and a large occupied space. Therefore, we provide an electric actuator. Content of the Utility Model
[0004] The purpose of the utility model is to provide an electric actuator, which solves the problems that when multi-stage gear transmission is required for the electric actuator, there is an unreasonable layout situation, resulting in a complex and large structure of the whole device and a large occupied space.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: an electric actuator, including a front shell and a rear shell, the front shell and the rear shell are buckled with each other to form a sealed shell with an accommodating space, and a driving motor, a worm and worm gear mechanism and a gear transmission mechanism are respectively arranged in the shell. The worm of the worm and worm gear mechanism is arranged horizontally from left to right and is connected to the output shaft of the driving motor. A gear at the power input end of the gear transmission mechanism is sleeved on the connecting shaft of the worm gear of the worm and worm gear mechanism. A spline sleeve for power output is axially arranged on the gear at the power output end of the gear transmission mechanism. The axes of the gears of the gear transmission mechanism are all parallel to each other, and the worm gear and the gears of the gear transmission mechanism are all vertically arranged, and the gears of the gear transmission mechanism are arranged along the front-back direction and the left-right direction, and the driving motor is horizontally arranged along the left-right direction directly above the gear transmission mechanism.
[0006] Preferably, a connecting seat is arranged on the rear shell.
[0007] Preferably, a concave card slot and a convex edge are respectively arranged along the contour edge on the opposite surfaces of the front shell and the rear shell, and the concave card slot and the convex edge are in a matching shape.
[0008] Preferably, the gear transmission mechanism is a speed reduction transmission mechanism.
[0009] The utility model has the following beneficial effects:
[0010] The utility model realizes variable-speed transmission through a gear train composed of multiple pairs of gears, making the gears much smaller in size, more convenient to manufacture and install, and the gears are distributed compactly in the front, back, left and right directions, reasonably utilizing the overlapping space during meshing. At the same time, the horizontally arranged motor and the worm and worm gear mechanism also utilize the space distributed in the front, back, left and right directions of the gears, avoiding occupying more extra space, making the overall volume of the actuator small and more conducive to layout. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0012] Figure 2 is an unfolded view of the utility model;
[0013] Figure 3 is a schematic diagram of the structures of the front shell and the rear shell of the utility model;
[0014] Figure 4 is a schematic diagram of the structure at the position of the gear transmission mechanism of the utility model.
[0015] In the figure: 1, front shell; 11, card slot; 2, rear shell; 21, connecting seat; 22, edge; 3, driving motor; 4, worm and worm gear mechanism; 41, worm; 42, worm wheel; 5, gear transmission mechanism; 6, spline sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0017] As Figures 1-4 shown, the present utility model provides a technical solution: an electric actuator, including a front shell 1 and a rear shell 2. A connecting seat 21 is arranged on the rear shell 2, and the connecting seat 21 is connected to the peripheral side of the rear shell 2. A concave card slot 11 and a convex edge 22 are respectively arranged along the contour edges on the opposite surfaces of the front shell 1 and the rear shell 2, and the concave card slot 11 and the convex edge 22 are in a matching shape. By inserting the edge 22 into the card slot 11, it is ensured that the front shell 1 and the rear shell 2 are connected and fitted, with good sealing performance and improved protection performance.
[0018] The front shell 1 and the rear shell 2 are buckled with each other to form a sealed housing with an accommodating space. The housing is a flat shell, and a driving motor 3, a worm and worm gear mechanism 4 and a gear transmission mechanism 5 are respectively arranged inside the housing, and the accommodating space of the housing just accommodates the above components, and the outer contour of the housing follows the shape trend of the above components.
[0019] The worm 41 of the worm and worm gear mechanism 4 is arranged in the left - right direction and connected to the output shaft of the driving motor 3. A gear of the power input end of the gear transmission mechanism 5 is sleeved on the connecting shaft of the worm gear 42 of the worm and worm gear mechanism 4. A spline sleeve 6 for power output is arranged axially on the gear at the power output end of the gear transmission mechanism 5, and a mounting groove for the spline sleeve 6 is arranged on the rear shell 2.
[0020] The gear transmission mechanism 5 is a speed - reducing transmission mechanism. The gear sets between the power input end and the power output end of the gear transmission mechanism 5 are respectively installed with a large gear and a small gear on the same shaft. Moreover, the gear at the power input end of the gear transmission mechanism 5 is a small gear, and the gear at the power output end of the gear transmission mechanism 5 is a large gear. The meshing relationship of each gear of the gear transmission mechanism 5 along the transmission direction from input to output is that the small gear meshes with the large gear. The axes of each gear of the gear transmission mechanism 5 are parallel to each other. Moreover, the worm gear 42 and each gear of the gear transmission mechanism 5 are vertically arranged, and each gear of the gear transmission mechanism 5 is arranged in the front - rear direction and the left - right direction. The driving motor 3 is horizontally arranged in the left - right direction directly above the gear transmission mechanism 5.
[0021] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such a process, method, article or device.
[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electric actuator, characterized in that: The invention comprises a front shell (1) and a rear shell (2), wherein the front shell (1) and the rear shell (2) are buckled together to form a sealed shell with a containing space, and a driving motor (3), a worm gear mechanism (4) and a gear transmission mechanism (5) are respectively arranged in the shell, the worm (41) of the worm gear mechanism (4) is arranged in a left-right direction and connected to the output shaft of the driving motor (3), a gear of a power input end of the gear transmission mechanism (5) is sleeved on the connecting shaft of the worm wheel (42) of the worm gear mechanism (4), a spline sleeve (6) for power output is axially arranged on the gear of the power output end of the gear transmission mechanism (5), the axes of the gears of the gear transmission mechanism (5) are parallel to each other, the worm wheel (42) and the gears on the gear transmission mechanism (5) are arranged vertically, and the gears on the gear transmission mechanism (5) are arranged in a front-back direction and a left-right direction, and the driving motor (3) is horizontally arranged in a left-right direction just above the gear transmission mechanism (5).
2. An electric actuator according to claim 1, characterized in that: A connecting seat (21) is provided on the rear shell (2).
3. The electric actuator according to claim 1, characterized in that: The front shell (1) and the rear shell (2) are provided with a circle of concave slots (11) and a circle of convex edges (22) along the contour edges of the opposing surfaces, and the concave slots (11) and the convex edges (22) are adapted in shape.
4. The electric actuator according to claim 1, characterized in that: The gear transmission mechanism (5) is a reduction transmission mechanism.