Guard for electric actuator

Abstract

The utility model relates to the protection technical field of electric actuator, disclose a kind of protection device of electric actuator, including inner cover and outer cover, inner cover is slidably attached to the inner ring of outer cover, the outer surface of inner cover is provided with limiting slide, limiting slide is slidably placed in the limiting sliding slot of outer cover inner surface setting, two are provided in the combination of inner cover and outer cover connected, and the inner cover of two combinations is spliced together with inner cover, outer cover and outer cover.The utility model technical scheme is connected by the shield structure of two halves of inner cover and outer cover, the total length of inner cover and outer cover can be adjusted to change the screw of different length use, and the rubber ring in sleeve can also be replaced with different inner diameter, to adapt the connecting seat of different diameter use, the length variable inner cover and outer cover can be spliced in the outer ring of screw by the connecting seat connected by screw, realize the screw protection purpose of electric actuator, avoid dust influence use.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for electric actuators, specifically a protective device for electric actuators. Background Technology

[0002] Electric actuators are core components in the field of automation control, converting electrical signals into mechanical actions to precisely control the opening of valves, baffles, and other components. They offer advantages such as fast response, high precision, and remote control capabilities. Supporting analog / digital signal input, they are adaptable to various working conditions and are widely used in industries such as power, chemical, and water treatment. They are key equipment for achieving process automation and improving production efficiency. Electric actuators can be classified into two types according to their motion: angular stroke and linear stroke. Angular stroke actuators are suitable for rotary valves, while linear stroke actuators drive gate valves and other linear motion valves. Linear electric actuators convert motor rotation into linear displacement, precisely controlling the load and are widely used in automation to achieve efficient and accurate operation.

[0003] Linear electric actuators are mounted above electric valves, with their leadscrews connected to the valve's input shaft. Both the actuator above the leadcrew and the electric valve below it are equipped with cylindrical connecting seats (bearing seats). The leadcrew of linear electric actuators is typically exposed. During use, the leadcrew is coated with grease or lubricating oil, which easily accumulates dust and other impurities over time, potentially leading to increased rotational resistance or jamming. Therefore, we propose a protective device for electric actuators. Utility Model Content

[0004] The purpose of this utility model is to provide a protective device for an electric actuator. By setting a protective cover structure consisting of two halves connected by an inner cover and an outer cover, the total length of the inner cover and the outer cover can be adjusted to adapt to the use of lead screws of different lengths. The rubber ring located inside the sleeve can also be replaced with one of different inner diameters to adapt to the use of connecting seats of different diameters. The variable length inner cover and outer cover can be spliced ​​onto the outer ring of the lead screw through the connecting seat connected to the lead screw, thereby achieving the purpose of protecting the lead screw of the electric actuator, preventing dust from affecting its use, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for an electric actuator, comprising an inner cover and an outer cover, wherein the inner cover is slidably attached to the inner ring of the outer cover, and a limiting slide strip is provided on the outer surface of the inner cover, the limiting slide strip being slidably placed in a limiting slide groove provided on the inner surface of the outer cover; two assemblies are provided, and the inner cover of the two assemblies is spliced ​​together with the inner cover, the outer cover and the outer cover, and a sleeve located at the top of the inner cover communicating with the inside of the inner cover and a sleeve located at the bottom of the outer cover communicating with the inside of the outer cover are also spliced ​​together, and a rubber ring is inserted inside the sleeve; an inner fixing plate and an outer fixing plate are respectively connected to the two sides of the inner cover and the two sides of the outer cover, and the inner fixing plates of the spliced ​​inner cover and the outer fixing plates of the spliced ​​outer cover are locked together by bolts.

[0006] By adopting the above technical solution, the total length of the inner and outer covers can be changed according to the distance between the connecting seats at both ends of the lead screw. Rubber rings with matching inner diameters can be selected according to the diameters of the upper and lower connecting seats and placed inside the sleeve. This makes it easy to splice the inner and outer covers and put them on the outer ring of the lead screw, and to tighten the sleeve on the outer ring of the connecting seat position through the rubber ring, thereby achieving the protection of the lead screw of the electric actuator.

[0007] Optionally, the inner surface of the outer fixing plate is provided with a plate groove, the inner fixing plate is slidably placed in the plate groove, and the inner surfaces of the inner fixing plate and the outer fixing plate are located on the same plane.

[0008] By adopting the above technical solution, when the inner cover slides inside the outer cover, the inner fixing plate also slides within the groove of the outer fixing plate.

[0009] Optionally, the surface of the outer fixing plate is uniformly provided with first through holes, and bolts pass through the first through holes to penetrate the outer fixing plate and lock it.

[0010] Optionally, the surface of the inner fixing plate is uniformly provided with second through holes, through which bolts pass and lock the inner fixing plate.

[0011] Optionally, the rubber ring has an opening, and the end faces of the rubber ring at the opening are in contact with each other.

[0012] By adopting the above technical solution, the rubber ring can be opened through the opening position, thereby fitting onto the outer ring of the connecting seat located at both ends of the lead screw.

[0013] Optionally, the inner ring surface of the sleeve is provided with an annular groove, and the rubber ring is secured to the inner ring of the sleeve through the annular groove.

[0014] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0015] 1. The technical solution of this application has a protective cover structure consisting of two halves, an inner cover and an outer cover. The total length of the inner cover and the outer cover can be adjusted to adapt to lead screws of different lengths. The rubber ring inside the sleeve can also be replaced with one of different inner diameters to adapt to connecting seats of different diameters. The variable length inner cover and outer cover can be spliced ​​onto the outer ring of the lead screw through the connecting seat connected to the lead screw, thereby achieving the purpose of protecting the lead screw of the electric actuator and preventing dust from affecting its use.

[0016] 2. The technical solution of this application has an inner fixing plate provided on the side of the inner cover, which is slidably placed in the plate groove on the inner surface of the outer fixing plate. When the inner cover and the outer cover slide to adjust the length, the inner fixing plate is placed in the sliding position in the plate groove, so that the connecting surfaces of the inner fixing plate and the outer fixing plate are on the same plane, which facilitates the sealing connection of the sides of the inner cover and the outer cover. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the protective device for the electric actuator of this utility model;

[0019] Figure 2 This is a schematic diagram of the upper structure of the protective device of the electric actuator of this utility model;

[0020] Figure 3 This utility model provides a protective device for the electric actuator. Figure 1 Detailed structural diagram of point A in the diagram;

[0021] Figure 4 This is a schematic diagram of the connection structure between the limiting slide bar and the limiting slide groove of the protective device of the electric actuator of this utility model.

[0022] In the diagram: 1. Outer cover; 11. Limiting groove; 2. Inner cover; 21. Limiting strip; 3. Outer fixing plate; 31. Plate groove; 32. First through hole; 4. Inner fixing plate; 41. Second through hole; 5. Sleeve; 51. Annular groove; 52. Rubber ring; 521. Opening; 6. Bolt. Detailed Implementation

[0023] Please see Figure 1-4This utility model provides a technical solution: a protective device for an electric actuator, including an inner cover 2 and an outer cover 1. The inner cover 2 is slidably attached to the inner ring of the outer cover 1, and a limiting slide strip 21 is provided on the outer surface of the inner cover 2. A limiting slide groove 11 is provided on the inner surface of the outer cover 1, which is in the same straight line as the limiting slide strip 21, so that the limiting slide strip 21 can be slidably placed in the limiting slide groove 11 provided on the inner surface of the outer cover 1. When in use, the inner cover 2 is pulled to slide inside the outer cover 1. At this time, the limiting slide strip 21 will also slide in the limiting slide groove 11, which can change the total length of the inner cover 2 and the outer cover 1 to match the length of the lead screw.

[0024] There are two assemblies connected by the inner cover 2 and the outer cover 1. The inner cover 2 of the two assemblies is spliced ​​together with the inner cover 2, the outer cover 1 and the outer cover 1. The top of the inner cover 2 is also provided with a sleeve 5 communicating with it, and the bottom of the outer cover 1 is also provided with a sleeve 5 communicating with it, so that the sleeve 5 located at the top of the inner cover 2 and communicating with the inside of the inner cover 2 and the sleeve 5 located at the bottom of the outer cover 1 and communicating with the inside of the outer cover 1 are also spliced ​​together.

[0025] In addition, inner fixing plates 4 and outer fixing plates 3 are respectively connected to the two sides of inner cover 2 and the two sides of outer cover 1. When spliced ​​together, the inner fixing plates 4 of inner cover 2 are in contact with each other, and the outer fixing plates 3 of outer cover 1 are also in contact with each other. The inner fixing plates 4 and the outer fixing plates 3 are all connected and locked by bolts 6. The surface of outer fixing plate 3 is evenly provided with first through holes 32. The bolts 6 pass through the first through holes 32 to penetrate the outer fixing plate 3 and lock it. The surface of inner fixing plate 4 is evenly provided with second through holes 41. The bolts 6 pass through the second through holes 41 to penetrate the inner fixing plate 4 and lock it, thereby realizing the locking of the spliced ​​inner cover 2, outer cover 1 and sleeve 5.

[0026] A rubber ring 52 is fitted inside the sleeve 5. The rubber ring 52 has an opening 521, and the end faces of the rubber ring 52 at the opening 521 are in contact with each other. The inner ring surface of the sleeve 5 has an annular groove 51. The rubber ring 52 is fitted into the inner ring of the sleeve 5 through the annular groove 51. After adjusting the length of the inner cover 2 and the outer cover 1, the sleeve 5 can be placed exactly on the outer ring of the connecting seat above the lead screw and the outer ring of the connecting seat below the lead screw. The rubber sleeve can be removed from the annular groove 51 inside the sleeve 5 and replaced with a rubber ring 52 whose inner diameter matches the outer diameter of the connecting seat. The rubber ring 52 is fitted onto the outer ring of the connecting seat through the opening 521. When the sleeve 5 is fitted onto the outer ring of the rubber ring 52 through the annular groove 51 and locked, the rubber ring 52 is pressed tightly against the outer ring surface of the connecting seat, thereby isolating and protecting the lead screw part inside the inner cover 2 and the outer cover 1.

[0027] Finally, the inner surface of the outer fixing plate 3 is provided with a plate groove 31, and the inner fixing plate 4 is slidably placed in the plate groove 31. The inner surfaces of the inner fixing plate 4 and the outer fixing plate 3 are on the same plane, so that when the inner cover 2 slides inside the outer cover 1, the inner fixing plate 4 slides in the plate groove 31 of the outer fixing plate 3.

[0028] In use, select the rubber ring 52 that matches the inner diameter of the electric actuator output end connector and the rubber ring 52 that matches the inner diameter of the electric valve input end connector. Open the two rubber rings 52 through the opening 521 and fit them onto the outer rings of the electric actuator connector and the electric valve connector above and below the screw, respectively. Then, connect the two halves of the assembly consisting of the inner cover 2 and the outer cover 1 together. By pulling the inner cover 2 and the outer cover 1, the limiting slide bar 21 slides within the limiting slide groove 11, thereby making the distance between the upper sleeve 5 of the inner cover 2 and the lower inner cylinder of the outer cover 1 equal to the distance between the electric actuator connector and the electric valve connector. Then, the two halves of the upper inner cover 2 and the two halves of the lower outer cover 1 can be connected by an external fastener. The fixed plate 3 and the inner fixed plate 4 are spliced ​​together, and the upper rubber ring 52 and the lower rubber ring 52 are respectively placed in the sleeve 5 spliced ​​together above the inner cover 2 and the sleeve 5 spliced ​​together below the outer cover 1. Then, the bolt 6 is used to pass through the first through hole 32 of the outer fixed plate 3 and the second through hole 41 of the inner fixed plate 4 to connect and lock the inner cover 2 and the outer cover 1, and splice the sleeve 5 together, so that the rubber ring 52 is located in the annular groove 51 inside the sleeve 5 and the rubber ring 52 is pressed against the outer ring surface of the connecting seat. This isolates and protects the lead screw part inside the inner cover 2 and the outer cover 1, preventing dust and other impurities from sticking to the lead screw and avoiding increasing the resistance to the rotation of the lead screw or causing it to jam.

Claims

1. A protective device for an electric actuator, comprising an inner cover (2) and an outer cover (1), characterized in that: The inner cover (2) can slide against the inner ring of the outer cover (1). The outer surface of the inner cover (2) is provided with a limiting slide (21). The limiting slide (21) can slide in the limiting slide groove (11) provided on the inner surface of the outer cover (1). There are two assemblies connected by the inner cover (2) and the outer cover (1). The inner cover (2) of the two assemblies is spliced ​​together with the inner cover (2), the outer cover (1) and the outer cover (1). The sleeve (5) located at the top of the inner cover (2) and communicating with the inside of the inner cover (2) and the sleeve (5) located at the bottom of the outer cover (1) and communicating with the inside of the outer cover (1) are also spliced ​​together. A rubber ring (52) is inserted inside the sleeve (5). The inner cover (2) and the outer cover (1) are respectively connected to an inner fixing plate (4) and an outer fixing plate (3). The inner fixing plate (4) of the inner cover (2) and the outer fixing plate (3) of the outer cover (1) are connected and locked by bolts (6).

2. The protective device for the electric actuator according to claim 1, characterized in that: The inner surface of the outer fixing plate (3) is provided with a plate groove (31), and the inner fixing plate (4) is slidably placed in the plate groove (31), and the inner surfaces of the inner fixing plate (4) and the outer fixing plate (3) are located on the same plane.

3. The protective device for the electric actuator according to claim 1, characterized in that: The surface of the outer fixing plate (3) is uniformly provided with first through holes (32), and the bolt (6) passes through the first through holes (32) through the outer fixing plate (3) and locks it.

4. The protective device for the electric actuator according to claim 1, characterized in that: The inner fixing plate (4) has a second through hole (41) evenly distributed on its surface. The bolt (6) passes through the second through hole (41) through the inner fixing plate (4) and locks it.

5. The protective device for the electric actuator according to claim 1, characterized in that: The rubber ring (52) is provided with an opening (521), and the end faces of the rubber ring (52) at the opening (521) are in contact with each other.

6. The protective device for the electric actuator according to claim 1, characterized in that: The inner ring surface of the sleeve (5) is provided with an annular groove (51), and the rubber ring (52) is clamped in the inner ring of the sleeve (5) through the annular groove (51).

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