CN215445253U

CN215445253U - Electric actuator with short-circuit protection

Info

Publication number: CN215445253U
Application number: CN202122193977.8U
Authority: CN
Inventors: 马睿
Original assignee: Tianjin Readymet Electromechanical Equipment Co ltd
Current assignee: Tianjin Readymet Electromechanical Equipment Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-01-07
Anticipated expiration: 2031-09-10

Abstract

The utility model belongs to the field of electric actuators, and particularly relates to an electric actuator with short-circuit protection, which comprises a driving mechanism and a protection mechanism arranged at the output end of the driving mechanism, wherein the driving mechanism comprises an actuator body and a short-circuit protector fixedly arranged at one side of the actuator body and used for short-circuit protection, an output shaft is arranged at the bottom end of the actuator body, and a mounting ring which is coaxially arranged with the output shaft is arranged below the actuator body; when the installation, be connected collar and control valve, the valve rod passes collar and output shaft, then slide the sliding ring down, make the sliding ring inhale with the lower magnetic plate magnetism on the collar and be connected, at this moment, flexible guard shield downwardly extending covers output shaft and valve rod, and cover the valve rod and establish with the valve body junction, protect the liquid that leaks via valve rod and valve body junction, prevent that the corrosive liquid that has of leakage from splashing to the executor body on, to the corruption short circuit that causes the executor body, the security is higher.

Description

Electric actuator with short-circuit protection

Technical Field

The utility model relates to the field of electric actuators, in particular to an electric actuator with short-circuit protection.

Background

The most extensive definition for an actuator is: a drive device capable of providing linear or rotary motion utilizes a certain drive energy source and works under the action of a certain control signal, an actuating mechanism uses liquid, gas, electric power or other energy sources and converts the liquid, the gas, the electric power or other energy sources into drive action through a motor, a cylinder or other devices, the drive device is widely applied to pipeline control valves, particularly pipeline control valves for conveying dangerous liquid, and manual control is replaced by an electric actuator, so that the control efficiency is improved.

The junction of the output shaft and the valve rod of the existing electric actuator has no protective measures, and when the control valve is in actual use, the junction of the valve rod and the valve body can cause the situation of liquid leakage sometimes, and when corrosive liquid is conveyed inside the control valve, the leaked liquid can be splashed onto the actuator, so that the actuator is corroded and short-circuited, particularly, the mounting position is remote, and personnel are difficult to check the control valve of the position. Accordingly, those skilled in the art have provided an electric actuator with short-circuit protection to solve the above-mentioned problems of the background art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an electric actuator with short-circuit protection, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a take short-circuit protection's electric actuator, includes actuating mechanism and installs the protection machanism at its output, actuating mechanism includes the executor body and sets firmly the short-circuit protection ware that is used for short-circuit protection in its one side, the bottom of executor body is equipped with the output shaft, the below of executor body be equipped with the collar that the output shaft is coaxial to be arranged, the top surface both sides homogeneous body shaping of collar has the support arm, the support arm is fixed the bottom of executor body, protection machanism establishes the flexible guard shield of fixing at its outer wall including fixed pipe and cover, the bottom cover of flexible guard shield is established and is fixed with the sliding ring, the sliding ring with the collar is coaxial to be arranged, the sliding ring slides in two the support arm inside wall, the top surface of collar sets firmly with the lower magnetic sheet that corresponds with the sliding ring.

As a still further scheme of the utility model: and an upper magnetic plate corresponding to the slip ring is fixedly arranged on the bottom surface of the actuator body.

As a still further scheme of the utility model: the lower magnetic plate and the upper magnetic plate are both boron magnets.

As a still further scheme of the utility model: the sliding ring is characterized in that sliding grooves are formed in the support arm, two sliding rods corresponding to the sliding grooves are fixedly arranged on the outer side wall of the sliding ring, the sliding rods slide in the sliding grooves, sliding plates are fixedly arranged at the ends, far away from the sliding ring, of the sliding rods, and the sliding plates are located on the outer side of the support arm.

As a still further scheme of the utility model: the thickness of the flexible shield is 2 mm.

As a still further scheme of the utility model: the bottom end inner diameter dimension of the flexible shield is greater than the inner diameter dimension of the mounting ring.

As a still further scheme of the utility model: the sliding plate is made of ABS plastic.

Compared with the prior art, the utility model has the beneficial effects that:

when the short circuit takes place inside the executor body, the timely disconnect-type power of short-circuit protection ware, prevent danger, when the installation, earlier upwards slide the sliding ring, make flexible guard shield expose, be connected collar and control valve, the valve rod pass the collar and with output shaft, then slide the sliding ring downwards, make the sliding ring inhale with the lower magnetic plate magnetism on the collar and be connected, at this moment, flexible guard shield downwardly extending covers output shaft and valve rod, and cover valve rod and valve body junction and establish, protect the liquid that leaks via valve rod and valve body junction, prevent that the corrosive liquid that has that leaks from sputtering to the executor body on, to the corruption short circuit that causes the executor body, the security is higher.

Drawings

FIG. 1 is a schematic structural diagram of an electric actuator with short-circuit protection;

FIG. 2 is a schematic diagram of an output shaft installation position in an electric actuator with short-circuit protection;

FIG. 3 is a schematic structural diagram of a protection mechanism in an electric actuator with short-circuit protection;

fig. 4 is a schematic diagram of a chute opening position in an electric actuator with short-circuit protection.

In the figure: 1. a drive mechanism; 11. an actuator body; 12. a short circuit protector; 13. an output shaft; 14. a mounting ring; 15. A support arm; 151. a chute; 16. a lower magnetic plate; 17. an upper magnetic plate; 2. a protection mechanism; 21. a fixed tube; 22. a flexible shield; 23. a slip ring; 24. a slide bar; 25. a slide board.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present invention, an electric actuator with short-circuit protection includes a driving mechanism 1 and a protection mechanism 2 installed at an output end of the driving mechanism 1, where the driving mechanism 1 includes an actuator body 11 and a short-circuit protector 12 fixed at one side of the actuator body for short-circuit protection, an output shaft 13 is disposed at a bottom end of the actuator body 11, an installation ring 14 coaxially disposed with the output shaft 13 is disposed below the actuator body 11, support arms 15 are integrally formed at two sides of a top surface of the installation ring 14, the support arms 15 are fixed at a bottom end of the actuator body 11, the protection mechanism 2 includes a fixed tube 21 and a flexible shield 22 fixed at an outer wall of the fixed tube, a slip ring 23 is fixed at a bottom end of the flexible shield 22 in a sleeved manner, the slip ring 23 is coaxially disposed with the installation ring 14, the slip ring 23 slides on inner side walls 15 of the two support arms, and a lower magnetic plate 16 corresponding to the slip ring 23 is fixed at a top surface of the installation ring 14.

In this embodiment, when a short circuit occurs inside the actuator body 11, the short circuit protector 12 timely disconnects the power supply to prevent danger, when installed, the slip ring 23 slides upwards to expose the flexible shield 22, the mounting ring 14 is connected with the control valve, the valve rod passes through the mounting ring 14 and is connected with the output shaft 13, then the slip ring 23 slides downwards to magnetically attract and connect the slip ring 23 with the lower magnetic plate 16 on the mounting ring 14, at this time, the flexible shield 22 extends downwards to cover the output shaft 13 and the valve rod, and covers the joint of the valve rod and the valve body to protect the liquid leaked from the joint of the valve rod and the valve body, so as to prevent the leaked corrosive liquid from sputtering onto the actuator body 11, and to cause corrosion short circuit of the actuator body 11, the safety is higher, when the slip ring 23 slides, a person slides the rod by holding the sliding plate 25 on the sliding rod 24, the slide bar 24 slides along the sliding groove 151, and plays a role in limiting and guiding the sliding direction of the slide ring 23 to prevent the slide ring 23 from falling off, and the slide plate 25 is made of ABS plastic, so that the strength is high, the insulation performance is good, and when the use strength is ensured, people are prevented from touching and getting an electric shock.

In fig. 2: the bottom surface of executor body 11 sets firmly the last magnetic sheet 17 that corresponds with sliding ring 23, when the installation, upwards slides sliding ring 23 to being connected with last magnetic sheet 17 magnetism, and during the installation, sliding ring 23 can not drop downwards, can not cause the influence to the installation.

In fig. 1 and 2: lower magnetic sheet 16 and last magnetic sheet 17 are like boron magnet, and its magnetic attraction is stronger, and when slip ring 23 and its magnetism were inhaled and are connected, under the circumstances that personnel did not slide, slip ring 23 can not take place to drop, connects comparatively stably.

In fig. 1, 3 and 4: all seted up spout 151 on the support arm 15, the lateral wall of sliding ring 23 has set firmly two slide bar 24 that correspond with spout 151, slide bar 24 slides in spout 151, slide bar 24 keeps away from the one end of sliding ring 23 and has all set firmly slide 25, slide 25 is located the 15 outside of support arm, when slip ring 23 slides, personnel carry out the slide bar through the slide 25 that grips on the slide bar 24, slide bar 24 slides along spout 151, play and carry out spacing direction to sliding ring 23 slip direction, prevent that sliding ring 23 from droing, slide 25's material is ABS plastics, its intensity is higher, and insulating nature is better, when guaranteeing the use intensity, prevent that personnel from touching the electric shock.

In fig. 3: the thickness of the flexible shield 22 is 2mm, which ensures the use strength thereof and does not break when it is stretched and contracted.

In fig. 1: the bottom end of flexible shield 22 has an inner diameter dimension that is greater than the inner diameter dimension of mounting ring 14, effectively shrouding liquid sprayed through the inside of mounting ring 14.

The working principle of the utility model is as follows: when short circuit occurs in the actuator body 11, the short circuit protector 12 timely disconnects the power supply to prevent danger, when in installation, the sliding ring 23 slides upwards to expose the flexible shield 22, the installation ring 14 is connected with the control valve, the valve rod passes through the installation ring 14 and is connected with the output shaft 13, then the sliding ring 23 slides downwards to enable the sliding ring 23 to be magnetically attracted with the lower magnetic plate 16 on the installation ring 14, at the moment, the flexible shield 22 extends downwards to cover the output shaft 13 and the valve rod and cover the joint of the valve rod and the valve body to protect liquid leaked from the joint of the valve rod and the valve body, so that the leaked corrosive liquid is prevented from sputtering onto the actuator body 11 to cause corrosion short circuit of the actuator body 11, the safety is higher, when the sliding ring 23 is slid, a person slides the sliding rod 24 along the sliding groove 151 by holding the sliding plate 25 on the sliding rod 24, play and carry out spacing direction to the slip ring 23 slip direction, prevent that the slip ring 23 from droing, the material of slide 25 is ABS plastics, its intensity is higher, and insulating nature is better, when guaranteeing the use intensity, prevent personnel's touch and electrocute, the bottom surface of executor body 11 sets firmly last magnetic sheet 17 that corresponds with slip ring 23, when the installation, upwards slide slip ring 23 to inhale with last magnetic sheet 17 and be connected, during the installation, slip ring 23 can not drop downwards, can not cause the influence to the installation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The electric actuator with the short-circuit protection function is characterized by comprising a driving mechanism (1) and a protection mechanism (2) installed at the output end of the driving mechanism, wherein the driving mechanism (1) comprises an actuator body (11) and a short-circuit protector (12) fixedly arranged on one side of the actuator body and used for short-circuit protection, an output shaft (13) is arranged at the bottom end of the actuator body (11), a mounting ring (14) coaxially arranged with the output shaft (13) is arranged below the actuator body (11), support arms (15) are integrally formed on two sides of the top surface of the mounting ring (14), the support arms (15) are fixed at the bottom end of the actuator body (11), the protection mechanism (2) comprises a fixed pipe (21) and a flexible shield (22) fixedly sleeved on the outer wall of the fixed pipe, a sliding ring (23) is fixedly sleeved at the bottom end of the flexible shield (22), and the sliding ring (23) and the mounting ring (14) are coaxially arranged, the slip rings (23) slide on the inner side walls of the two support arms (15), and the top surfaces of the mounting rings (14) are fixedly provided with lower magnetic plates (16) corresponding to the slip rings (23).

2. The electric actuator with short-circuit protection as claimed in claim 1, wherein the actuator body (11) has an upper magnetic plate (17) fixed to its bottom surface, which corresponds to the slip ring (23).

3. An electric actuator with short-circuit protection according to claim 2, characterized in that the lower magnetic plate (16) and the upper magnetic plate (17) are all such as boron magnets.

4. The electric actuator with short-circuit protection according to claim 1, wherein sliding grooves (151) are formed in the support arm (15), two sliding rods (24) corresponding to the sliding grooves (151) are fixedly arranged on an outer side wall of the sliding ring (23), the sliding rods (24) slide in the sliding grooves (151), sliding plates (25) are fixedly arranged on ends of the sliding rods (24) far away from the sliding ring (23), and the sliding plates (25) are located on an outer side of the support arm (15).

5. Electric actuator with short-circuit protection according to claim 1, characterized in that the thickness of the flexible shield (22) is 2 mm.

6. An electric actuator with short-circuit protection according to claim 1, characterized in that the inner diameter of the bottom end of the flexible shield (22) is larger than the inner diameter of the mounting ring (14).

7. An electric actuator with short-circuit protection as claimed in claim 4, characterized in that the material of the slide plate (25) is ABS plastic.