Torque adjusting device of electric actuator
By designing and locking the limit adjustment block of the two-flap clamping structure, the problem of easy sliding of the adjustment limit block in the prior art is solved, ensuring the stable triggering of the micro switch and protecting the valve.
Patent Information
- Application Number
- CN202421537993.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the torque adjustment of existing valve electric actuators, the adjustment limit block is easy to slide, affecting the triggering of the micro switch.
An electric actuator torque adjustment device is designed, using a limit adjustment block with two-flap pair clamping structure, and is locked by a hexagonal cylindrical head screw. The inner surface is equipped with anti-slip protrusions to ensure stability.
The adjustment limit block is stable and fixed, avoiding sliding, ensuring stable triggering of the micro switch, and protecting the valve from being damaged.
Smart Images
Figure CN222669093U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric actuator parts, in particular to a torque adjustment device for an electric actuator. Background Art
[0002] The valve electric actuator is a mechatronic industrial equipment used in conjunction with the valve to control the opening and closing of the valve. It mainly applies a certain torque to the valve to make the valve fully open or fully closed. The torque control principle is that when the torque required to open or close the valve under abnormal conditions is greater than the controllable torque set by the valve electric actuator, the torque structure will act and cut off the control circuit, causing the motor to stop, thereby protecting the valve from damage.
[0003] The torque adjustment of the existing valve electric actuator adopts the mode of adjusting the limit block, in which a bracket is set on the torque feedback shaft, and a strip hole is set on the bracket, and a cross screw is set in the strip hole. The adjustment limit block is threadedly connected to the cross screw and rotates coaxially with the torque feedback shaft. The micro switch is triggered after the adjustment limit block is turned to the specified position. This connection method has the problem that the adjustment limit block is easy to slide, which affects the triggering of the micro switch. Summary of the invention
[0004] In view of the deficiencies in the prior art, the utility model provides a torque adjustment device for an electric actuator.
[0005] The technical solution provided by the utility model is:
[0006] A torque adjustment device for an electric actuator comprises a torque feedback shaft, on which an opening limit adjustment block and a closing limit adjustment block are arranged. The opening limit adjustment block and the closing limit adjustment block have the same structure and are in a two-petal clamping structure, comprising a first half block and a second half block. The first half block and the second half block are locked and fixed on the torque feedback shaft by hexagon socket head screws and rotate coaxially with the torque feedback shaft.
[0007] The inner surfaces of the first half block and the second half block are provided with a plurality of anti-slip protrusions.
[0008] A torque feedback shaft sleeve is sleeved on the outer side of the torque feedback shaft.
[0009] A shaft elastic retaining ring is arranged between the torque feedback shaft sleeve and the opening limit adjustment block and the closing limit adjustment block.
[0010] The torque feedback shaft is provided with a dial for indicating the positions of the opening limit adjustment block and the closing limit adjustment block.
[0011] Beneficial effects of the utility model: the utility model sets the adjustment limit block as a two-petal clamping structure and locks it with a hexagon socket cylindrical head screw. It is not easy to loosen after being fixed and has good stability, ensuring stable triggering of the micro switch and protecting the valve from damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a front view of an embodiment of the utility model;
[0013] Figure 2 It is a left view of an embodiment of the utility model. DETAILED DESCRIPTION
[0014] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.
[0015] like Figure 1-2 As shown, an electric actuator torque adjustment device includes a torque feedback shaft 1, on which an opening limit adjustment block 6 and a closing limit adjustment block 7 are provided. The opening limit adjustment block 6 and the closing limit adjustment block 7 have the same structure and are in a two-petal clamping structure, including a first half block 8 and a second half block 9. The first half block 8 and the second half block 9 are locked and fixed on the torque feedback shaft 1 by a hexagon socket cylindrical head screw 12 and rotate coaxially with the torque feedback shaft 1. This structure is not easy to loosen after being fixed, has good stability, is easy to install, ensures stable triggering of the micro switch, and protects the valve from being damaged.
[0016] In this embodiment, a plurality of anti-slip protrusions 11 are provided on the inner surfaces of the first half block 8 and the second half block 9 to ensure that the first half block 8 and the second half block 9 will not slide after being clamped. A dial 4 for indicating the positions of the opening limit adjustment block 6 and the closing limit adjustment block 7 is provided on the torque feedback shaft 1. The tail ends 10 of the first half block 8 and the second half block 9 are connected and converged to the middle to form a pointer shape, which is used to cooperate with the dial to confirm the positions of the opening limit adjustment block 6 and the closing limit adjustment block 7.
[0017] In this embodiment, a torque feedback shaft sleeve 2 is sleeved on the outer side of the torque feedback shaft 1 to fix the torque feedback shaft 1 and reduce friction. An elastic shaft retaining ring 5 is provided between the torque feedback shaft sleeve 2 and the opening limit adjustment block 6 and the closing limit adjustment block 7 to prevent the torque feedback shaft 1 from being subjected to force and causing axial movement, which affects the opening limit adjustment block 6 and the closing limit adjustment block 7 to trigger the micro switch.
[0018] The embodiments should not be regarded as limiting the present invention, and any non-creative improvements made based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.
Claims
1. A torque adjustment device for an electric actuator, comprising a torque feedback shaft, on which an opening limit adjustment block and a closing limit adjustment block are provided, characterized in that: The opening limit adjustment block and the closing limit adjustment block have the same structure and are a two-petal clamping structure, including a first half block and a second half block. The first half block and the second half block are locked and fixed on the torque feedback shaft by hexagon socket head screws and rotate coaxially with the torque feedback shaft.
2. The electric actuator torque adjustment device according to claim 1, characterized in that: The inner surfaces of the first half block and the second half block are provided with a plurality of anti-slip protrusions.
3. The electric actuator torque adjustment device according to claim 1, characterized in that: A torque feedback shaft sleeve is sleeved on the outer side of the torque feedback shaft.
4. The electric actuator torque adjustment device according to claim 3, characterized in that: A shaft elastic retaining ring is arranged between the torque feedback shaft sleeve and the opening limit adjustment block and the closing limit adjustment block.
5. The electric actuator torque adjustment device according to claim 1, characterized in that: The torque feedback shaft is provided with a dial for indicating the positions of the opening limit adjustment block and the closing limit adjustment block.