A transmission extension device for electric actuator

Abstract

The utility model discloses an electric actuator transmission extension device. The utility model relates to the technical field of electric actuators, comprising: an upper terminal plate, a main receiving tube is vertically penetrated through the middle of the inner side of the upper terminal plate, telescopic rods are arranged on both sides of the bottom end of the upper terminal plate, a lower terminal plate is arranged at the bottom end of the telescopic rod, a lower receiving tube is arranged in the middle of the upper end of the lower terminal plate, an auxiliary structure is arranged on the inner side of the lower receiving tube, and stable structures are arranged on both sides of the top end of the upper terminal plate. In the electric actuator transmission extension device, the driving end of the electric actuator is inserted into the inner tube inside the lower receiving tube, and the driving end of the electric actuator is connected to the extension shaft rod, the inner tube reduces the activity range of the extension shaft rod, and keeps the setting of the working area of ​​the extension shaft rod on the inner side of the relative plane, so that the activity radius of the driving end of the electric actuator can be limited to prevent the working position of the driving end of the electric actuator from being offset.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators, in particular to a transmission extension device for an electric actuator. Background Art

[0002] The electric actuator transmission extension device is a device used to extend the connection distance between the electric actuator and the valve. This device is mainly suitable for scenarios where there are space limitations or the need to isolate the electric actuator from high temperature, high pressure or other harmful environments. The use of this extension device can arrange the electric actuator and related equipment more flexibly, which helps to improve the reliability and safety of the system.

[0003] The basic principle of this device is to transmit the rotation or linear motion generated by the electric actuator to a distant valve through a set of transmission mechanisms (such as transmission shafts, gears, etc.). In this way, the electric actuator can be installed at a distance from the valve without being directly affected by adverse conditions such as high temperature and harmful gases.

[0004] The design of electric actuator transmission extension device usually takes into account the following points:

[0005] 1. Transmission efficiency: The extension device should minimize energy loss when transmitting motion to ensure that the valve can operate accurately and efficiently.

[0006] 2. Structural strength and rigidity: The transmission needs to have sufficient strength and rigidity to withstand the forces and torques generated during operation.

[0007] 3. Adaptability: The device needs to be able to accommodate different types and sizes of electric actuators and valves to suit various installation needs.

[0008] 4. Maintenance and reliability: The design should facilitate installation, commissioning and routine maintenance, while ensuring long-term operational stability and reliability.

[0009] Electric actuator transmission extension devices are widely used in petrochemical, power plants, water treatment and other industries, which can significantly improve the flexibility and reliability of industrial automation systems. When selecting and designing such devices, it is necessary to comprehensively consider multiple factors such as the actual application environment, valve type, operating frequency, etc. to ensure efficient and stable operation of the system.

[0010] The application number is CN202321840461.0, which includes a valve body, an actuator and a connecting mechanism. The valve body and the actuator are detachably connected with a connecting mechanism, and the connecting mechanism includes an end ring A, a slot, an insert ring A, an insert plate, a connecting rod, an end ring B and an insert ring B. The valve body is equipped with an end ring A connected to the valve stem, and the actuator is equipped with an insert ring A connected to the power output end of the actuator. When maintenance is required, the bolts are unscrewed and the actuator is raised. At the same time, a connecting rod is installed between the valve body and the actuator, and the end ring B at the end of the connecting rod is connected to the insert ring A. However, when the equipment is in use, it cannot guarantee that the working direction will be offset due to the vibration caused by the working object when the electric actuator is working in a deep well working area.

[0011] Therefore, in view of this, research and improvement are conducted on the existing deficiencies, and an electric actuator transmission extension device is proposed. Utility Model Content

[0012] The purpose of the utility model is to provide a transmission extension device for an electric actuator to solve the problems raised in the above background technology.

[0013] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric actuator transmission extension device, comprising: an upper terminal plate, a main receiving tube is vertically penetrated in the middle of the inner side of the upper terminal plate, telescopic rods are arranged on both sides of the bottom end of the upper terminal plate, a lower terminal plate is arranged at the bottom end of the telescopic rod, a lower receiving tube is arranged in the middle of the upper end of the lower terminal plate, and an auxiliary structure is arranged on the inner side of the lower receiving tube;

[0014] Both sides of the top end of the upper terminal plate are provided with stabilizing structures.

[0015] Furthermore, the auxiliary structure includes an inner cylinder and an extended shaft rod. The inner side of the lower receiving cylinder is vertically penetrated by the inner cylinder, and the lower end of the inner side of the inner cylinder is vertically penetrated by an extended shaft rod. The center of the inner cylinder coincides with the center of the lower receiving cylinder, which is convenient for the installation of the electric actuator drive end.

[0016] Furthermore, a ball bearing is arranged at the edge of the inner bottom end of the lower receiving tube, and the ball bearing and the inner tube form a rotating structure to facilitate the rotation of the inner tube.

[0017] Furthermore, the inner cylinder is snap-fitted to the driving end of the electric actuator, which facilitates installation of the driving end of the electric actuator.

[0018] Furthermore, a hole is provided in the middle of the bottom end of the inner side of the lower receiving tube, and the diameter of the hole is the same as the diameter of the outer side of the extension shaft rod, so as to facilitate the installation of the extension shaft rod.

[0019] Furthermore, the stabilizing structure includes a rotating rod, a concave plate and a convex plate. The rotating rod is arranged on both sides of the top of the upper terminal plate, and the concave plate and the convex plate are arranged on the top of the rotating rod. A rotating structure is formed between the rotating rod and the upper terminal plate to facilitate the rotation of the rotating rod.

[0020] Furthermore, a snap-fit ​​connection is formed between the concave plate and the convex plate, which facilitates the combination of the concave plate and the convex plate.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model inserts the driving end of the electric actuator into the inner cylinder inside the lower receiving cylinder, and the driving end is connected to the extension shaft rod. At the same time, the inner cylinder reduces the range of motion of the extension shaft rod and keeps the working area of ​​the extension shaft rod inside the relative plane, so that the activity radius of the driving end of the electric actuator can be limited to prevent the working position of the driving end from being offset;

[0023] 2. The utility model rotates the rotating rod, which drives the concave plate and the convex plate to engage with each other. At this time, the part formed by the concave plate and the convex plate abuts against the connection end of the electric actuator, thereby preventing the electric actuator from tilting due to vibration during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0025] Figure 2 It is a partial structural schematic diagram of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the lower receiving tube of the utility model;

[0027] Figure 4 This is a schematic diagram of the auxiliary structure of the utility model;

[0028] Figure 5 It is a schematic diagram of the stable structure of the utility model.

[0029] In the figure: 1. upper end plate; 2. main supporting tube; 3. lower supporting tube; 4. lower end plate; 5. auxiliary structure; 501. inner tube; 502. extension shaft rod; 6. telescopic rod; 7. stabilizing structure; 701. rotating rod; 702. concave plate; 703. convex plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-Figure 2 As shown, an electric actuator transmission extension device comprises an upper terminal plate 1, a main receiving tube 2 is vertically penetrated in the middle of the inner side of the upper terminal plate 1, telescopic rods 6 are arranged on both sides of the bottom end of the upper terminal plate 1, a lower terminal plate 4 is arranged at the bottom end of the telescopic rod 6, a lower receiving tube 3 is arranged in the middle of the upper end of the lower terminal plate 4, and an auxiliary structure 5 is arranged on the inner side of the lower receiving tube 3;

[0032] Stabilizing structures 7 are provided on both sides of the top of the upper terminal plate 1 .

[0033] like Figure 1-Figure 5 As shown, an electric actuator transmission extension device, the auxiliary structure 5 includes an inner cylinder 501 and an extension shaft 502, the inner side of the lower receiving cylinder 3 is vertically penetrated by the inner cylinder 501, the lower end of the inner side of the inner cylinder 501 is vertically penetrated by the extension shaft 502, the center of the inner cylinder 501 coincides with the center of the lower receiving cylinder 3, the driving end of the electric actuator passes through the inner cylinder 501 inside the lower receiving cylinder 3, and the driving end of the electric actuator is connected to the extension shaft 502, wherein the following effects and advantages are achieved:

[0034] 1. Accurate centering and alignment: Since the center of the inner cylinder 501 coincides with the center of the lower receiving cylinder 3, this ensures the centering of the entire device, reduces friction and wear caused by poor centering, and improves the overall durability and operating efficiency of the system.

[0035] 2. Stable transmission connection: The driving end of the electric actuator passes through the lower receiving tube 3 and is connected to the extension shaft 502 inside the inner tube 501. This connection method can provide more stable and reliable force transmission. Both torque and linear force can be effectively transmitted to the working machine through the connection structure, reducing energy loss.

[0036] 3. Compact structure and space saving: The vertical arrangement of the inner cylinder 501 and the extension shaft 502 makes the entire device occupy less space, which is particularly important for space-constrained application environments. This design also helps to simplify installation and maintenance work.

[0037] 4. Enhanced device protection: The internal configuration can provide more protection for key transmission components such as the extension shaft 502, preventing external factors such as dust, moisture or other corrosive substances from directly affecting the performance and life of these components.

[0038] 5. Flexible adaptability and compatibility: This design allows for use in a variety of different installation environments because it provides a simple and effective way to adjust or change the transmission path or length without significantly modifying the existing structure. This design not only improves the operating efficiency and stability of the device, but also enhances the reliability of the system and provides more advantages in protecting key components and saving installation space.

[0039] like Figure 1-Figure 5 As shown, an electric actuator transmission extension device, the stabilizing structure 7 includes a rotating rod 701, a concave plate 702 and a convex plate 703, the rotating rods 701 are arranged on both sides of the top of the upper terminal plate 1, the top of the rotating rod 701 is arranged with a concave plate 702 and a convex plate 703, the rotating rod 701 and the upper terminal plate 1 form a rotating structure, the rotating rod 701 at the top of the upper terminal plate 1 is rotated, and the rotating rod 701 drives the concave plate 702 and the convex plate 703 to rotate, and the effects and advantages brought are:

[0040] 1. Improved stability: By arranging the rotating rod 701 on both sides of the upper terminal plate 1 and configuring the concave plate 702 and the convex plate 703 on the rotating rod 701, this structure provides additional physical support for the electric actuator. When the rotating rod 701 rotates, driving the concave plate 702 and the convex plate 703 to fit the outer side of the electric actuator, the stability of the electric actuator is increased, thereby reducing the unstable movement caused by vibration or unbalanced load.

[0041] 2. Adaptive adjustment: The rotating structure formed between the rotating rod 701 and the upper terminal plate 1 allows the concave plate 702 and the convex plate 703 to be adjusted to the position that best fits against the outside of the electric actuator. This means that no matter what the exact size or shape of the electric actuator is, this structure can provide appropriate support, achieving a more fitting and effective stabilization effect.

[0042] 3. Reduce wear: Through the close fit between the concave plate 702 and the convex plate 703, the outer side of the electric actuator is directly acted on, which can effectively disperse the load and pressure and avoid concentrating pressure on a single point, which helps to reduce the risk of wear and tear on the housing of the electric actuator.

[0043] 4. Easy to install and adjust: The rotating structure in the design not only provides additional stability, but also allows the position of the concave plate 702 and the convex plate 703 to be adjusted quickly and easily to accommodate different types of electric actuators. This flexibility makes assembly and daily maintenance work more convenient.

[0044] 5. Enhanced protection: In some cases, the electric actuator may be exposed to direct external forces, such as impact or excessive pressure. Through the construction of the concave plate 702 and the convex plate 703, an additional "barrier" is created to protect the electric actuator from damage to a certain extent. This stable structure 7 plays a key role in ensuring the stable operation of the electric actuator, improving its anti-vibration and anti-impact capabilities, and protecting the electric actuator from external damage, thereby improving the reliability and durability of the overall system.

[0045] Working principle: When using the electric actuator transmission extension device, first pass the pre-prepared driving end of the electric actuator through the upper terminal plate 1 and the main receiving tube 2, and at the same time, pass the driving end of the electric actuator through the inner tube 501 inside the lower receiving tube 3, and the driving end of the electric actuator is connected to the extension shaft 502, and then rotate the rotating rod 701 at the top of the upper terminal plate 1, and the rotating rod 701 drives the concave plate 702 and the convex plate 703 to rotate, and the part composed of the concave plate 702 and the convex plate 703 presses against the outside of the electric actuator to prevent the electric actuator from shaking due to vibration. This is the working principle of the electric actuator transmission extension device.

[0046] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A transmission extension device for an electric actuator, comprising: The upper terminal plate (1) is characterized in that a main receiving tube (2) is vertically provided in the middle of the inner side of the upper terminal plate (1), telescopic rods (6) are provided on both sides of the bottom end of the upper terminal plate (1), a lower terminal plate (4) is provided at the bottom end of the telescopic rod (6), a lower receiving tube (3) is provided in the middle of the upper end of the lower terminal plate (4), and an auxiliary structure (5) is provided on the inner side of the lower receiving tube (3); Both sides of the top of the upper terminal plate (1) are provided with a stabilizing structure (7); The auxiliary structure (5) comprises an inner cylinder (501) and an extension shaft (502); the inner side of the lower receiving cylinder (3) is vertically penetrated by the inner cylinder (501); the lower end of the inner side of the inner cylinder (501) is vertically penetrated by the extension shaft (502); the center of the circle of the inner cylinder (501) coincides with the center of the circle of the lower receiving cylinder (3); The stabilizing structure (7) comprises a rotating rod (701), a concave plate (702) and a convex plate (703); the rotating rod (701) is arranged on both sides of the top end of the upper terminal plate (1); the concave plate (702) and the convex plate (703) are arranged at the top end of the rotating rod (701); a rotating structure is formed between the rotating rod (701) and the upper terminal plate (1).

2. The electric actuator transmission extension device according to claim 1, characterized in that: A ball bearing is arranged at the edge of the inner bottom end of the lower receiving tube (3), and the ball bearing and the inner tube (501) form a rotating structure.

3. The electric actuator transmission extension device according to claim 1, characterized in that: An electric actuator driving end is provided at one end of the electric actuator transmission extension device, and the inner cylinder (501) is in a snap-fit ​​connection with the electric actuator driving end.

4. The electric actuator transmission extension device according to claim 1, characterized in that: A hole is provided in the middle of the inner bottom end of the lower receiving tube (3), and the diameter of the hole is the same as the diameter of the outer side of the extension shaft (502).

5. The electric actuator transmission extension device according to claim 1, characterized in that: A snap-fit ​​connection is formed between the concave plate (702) and the convex plate (703).

Images