Actuator spring element arrangement structure based on load reset

Abstract

The utility model belongs to the field of actuators, particularly relates to an actuator spring element arrangement structure based on load reset, and aims to solve the problems that the existing load reset pneumatic actuator mostly adopts spring element arrangement, the larger the driving force is, the larger the spring element is or the more the spring element is, the appearance size is large, and the component cost is high. The utility model discloses an electric push rod which comprises a cylindrical box, a piston plate is slidably connected in the cylindrical box, the top of the piston plate is fixedly connected with a connecting rod, and one end of the connecting rod slidably penetrates through the cylindrical box and is fixedly connected with a driving shaft. When a piston plate moves downwards, a plurality of first compression springs can be extruded, then energy is stored for the device, the valve can be helped to be closed, a positioning block drives an L-shaped block to pop out, at the moment, an outer sleeve can be helped to be taken out, then an internal second compression spring is replaced, and it is guaranteed that elastic force is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to an arrangement structure of actuator spring elements based on load reset. Background Technique

[0002] An actuator is a combination of an actuator mechanism and a control valve in an automatic control system. Its role in an automatic control system is to receive signals sent from a regulator or a computer (DCS, PLC, etc.), and adjust the flow rate of the process medium according to its position and characteristics in the process pipeline, so as to keep the controlled automation instrument within the required range during the production process.

[0003] Existing pneumatic actuators with load reset mostly adopt spring element settings. The greater the driving force requirement, the larger or more spring elements there are, which has the defects of large external dimensions and high component costs. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art that existing pneumatic actuators with load reset mostly adopt spring element settings. The greater the driving force requirement, the larger or more spring elements there are, which has the defects of large external dimensions and high component costs, and to propose an arrangement structure of actuator spring elements based on load reset.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An arrangement structure of actuator spring elements based on load reset includes a cylindrical box. A piston plate is slidably connected inside the cylindrical box. One end of a connecting rod is fixedly connected to the top of the piston plate. The other end of the connecting rod slidably penetrates through the cylindrical box and is fixedly connected to a driving shaft. A driving component for driving the piston plate to lift and lower is arranged inside the cylindrical box;

[0007] Strip-shaped holes are formed on both sides of the cylindrical box. An L-shaped block is slidably connected inside the strip-shaped holes. A reset component for helping the piston plate to reset is arranged on the top of the L-shaped block;

[0008] A braking component for braking the L-shaped block is arranged on the outer wall of the cylindrical box.

[0009] In a possible design, the driving component includes an electric push rod fixedly connected to the inner wall of the bottom of the cylindrical box. The piston rod of the electric push rod is fixedly connected to the bottom of the piston plate. Slide grooves are formed on both inner walls of the cylindrical box. Sliders are fixedly connected to both sides of the piston plate. The sliders are slidably connected inside the slide grooves.

[0010] In a possible design, two symmetrically arranged fixing rods are fixedly connected to the inner wall of the top of the cylindrical box. The fixing rods slide through the piston plate. A limiting block is fixedly connected to the bottom of the fixing rod. A same first compression spring is fixedly connected between the top of the limiting block and the bottom of the piston plate.

[0011] In a possible design, the reset assembly includes a fixing column fixedly connected to the top of the L-shaped block. An outer sleeve is sleeved on the outer wall of the fixing column. A second compression spring is fixedly connected to the inner wall of the top of the outer sleeve. The bottom of the second compression spring abuts against the top of the fixing column. Sound-absorbing cotton is arranged on the inner wall of the outer sleeve.

[0012] In a possible design, the braking assembly includes a rotating ring rotatably connected to the outer wall of the cylindrical box. Two symmetrically arranged notches are formed in the top of the rotating ring. The notches are used in cooperation with the positioning grooves.

[0013] In a possible design, two symmetrically arranged positioning grooves are formed in the inner wall of the bottom of the cylindrical box. A positioning block is slidably connected to the inner wall of the bottom of the positioning groove. The top of the positioning block is fixedly connected to the bottom of the L-shaped block. A same tension spring is fixedly connected between one side of the positioning block and the inner wall of one side of the positioning groove.

[0014] In this application, during use, by starting the electric push rod, the piston rod of the electric push rod can drive the piston plate to move downward. The setting of the slider and the chute can ensure the stability of the movement of the piston plate. The piston plate drives the connecting rod to move downward, and the connecting rod drives the drive shaft to move downward for controlling the opening of the valve. And when the piston plate moves downward, it will squeeze a plurality of first compression springs, thereby storing energy for the device. When the electric push rod fails, the piston plate can be reset by the elastic force of the first compression spring, which can help close the valve.

[0015] And when the piston plate descends, it can drive the outer sleeve to move downward. The outer sleeve slides on the outer wall of the fixing column and squeezes the second compression spring. The elastic force of the second compression spring can also help reset the piston plate. The sound-absorbing cotton can reduce noise. When the second compression spring needs to be replaced, the rotating ring can be rotated first. The rotating ring rotates the notch to one side of the positioning groove. At this time, the positioning block moves horizontally under the pulling force of the tension spring, and the positioning block drives the L-shaped block to pop out. At this time, it can help take out the outer sleeve, and then replace the second compression spring inside to ensure stable elastic force.

[0016] Beneficial effects:

[0017] In the present utility model, for the actuator spring element arrangement structure based on load reset, through the driving assembly, the effect of controlling the opening and closing of the valve can be achieved, and thus, when in use, power can be normally provided for the valve.

[0018] In the present utility model, for the arrangement structure of the actuator spring element based on load reset, through the energy storage component, the effect of energy storage for the device can be achieved. Furthermore, when a failure occurs in the electric push rod, it can help the piston plate to rebound and reset, and then the effect of valve closing can be realized;

[0019] In the present utility model, when the electric push rod is started, the piston rod of the electric push rod can drive the piston plate to move downward to control the opening of the valve. When the piston plate moves downward, it will squeeze a plurality of first compression springs, thereby storing energy for the device. When a failure occurs in the electric push rod, the piston plate can be reset by the elastic force of the first compression spring, which can help close the valve. The positioning block drives the L-shaped block to pop out, and at this time, it can help take out the outer sleeve, and then replace the second compression spring inside to ensure stable elastic force. Description of the Drawings

[0020] Figure 1 is a three-dimensional structure diagram of an arrangement structure of an actuator spring element based on load reset proposed by the present utility model;

[0021] Figure 2 is a three-dimensional sectional structure diagram of an arrangement structure of an actuator spring element based on load reset proposed by the present utility model;

[0022] Figure 3 is an exploded structure diagram of an arrangement structure of an actuator spring element based on load reset proposed by the present utility model;

[0023] Figure 4 is an exploded structure diagram of the L-shaped block and the rotating ring in an arrangement structure of an actuator spring element based on load reset proposed by the present utility model.

[0024] In the figure: 1, cylindrical box; 2, connecting rod; 3, drive shaft; 4, L-shaped block; 5, rotating ring; 6, notch; 7, chute; 8, slider; 9, electric push rod; 10, outer sleeve; 11, piston plate; 12, fixed rod; 13, first compression spring; 14, limit block; 15, positioning block; 16, tension spring; 17, positioning groove; 18, strip hole; 19, second compression spring; 20, fixed column; 21, sound-absorbing cotton. Detailed Embodiments

[0025] 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.

[0026] Embodiment 1

[0027] Refer to Figures 1-4, an actuator spring element arrangement structure based on load reset, which is applied in the field of actuators, including: a cylindrical box 1, a piston plate 11 is slidably connected inside the cylindrical box 1, a connecting rod 2 is fixedly connected to the top of the piston plate 11, one end of the connecting rod 2 slidably penetrates through the cylindrical box 1 and is fixedly connected to a driving shaft 3, a driving component for driving the piston plate 11 to lift and lower is arranged inside the cylindrical box 1, the driving component includes an electric push rod 9 fixedly connected to the inner wall of the bottom of the cylindrical box 1, the piston rod of the electric push rod 9 is fixedly connected to the bottom of the piston plate 11, sliding grooves 7 are opened on both inner walls of the cylindrical box 1, sliding blocks 8 are fixedly connected to both sides of the piston plate 11, and the sliding blocks 8 are slidably connected inside the sliding grooves 7, two symmetrically arranged fixing rods 12 are fixedly connected to the inner wall of the top of the cylindrical box 1, the fixing rods 12 slidably penetrate through the piston plate 11, a limiting block 14 is fixedly connected to the bottom of the fixing rods 12, and a same first compression spring 13 is fixedly connected between the top of the limiting block 14 and the bottom of the piston plate 11. By starting the electric push rod 9, the piston rod of the electric push rod 9 can drive the piston plate 11 to move downward. The settings of the sliding blocks 8 and the sliding grooves 7 can ensure the stability of the movement of the piston plate 11. The piston plate 11 drives the connecting rod 2 to move downward, and the connecting rod 2 drives the driving shaft 3 to move downward for controlling the opening of the valve. And when the piston plate 11 moves downward, it will squeeze a plurality of first compression springs 13, thereby storing energy for the device. When the electric push rod 9 fails, the piston plate 11 can be reset by the elastic force of the first compression spring 13, which can help the valve to close;

[0028] Strip-shaped holes 18 are opened on both sides of the cylindrical box 1, an L-shaped block 4 is slidably connected inside the strip-shaped holes 18, a reset component for helping the piston plate 11 to reset is arranged on the top of the L-shaped block 4, the reset component includes a fixing column 20 fixedly connected to the top of the L-shaped block 4, an outer sleeve 10 is sleeved on the outer wall of the fixing column 20, a second compression spring 19 is fixedly connected to the inner wall of the top of the outer sleeve 10, the bottom of the second compression spring 19 abuts against the top of the fixing column 20, a sound-absorbing cotton 21 is arranged on the inner wall of the outer sleeve 10, and when the piston plate 11 descends, it can drive the outer sleeve 10 to move downward. The outer sleeve 10 slides on the outer wall of the fixing column 20 and squeezes the second compression spring 19. The elastic force of the second compression spring 19 can also help the piston plate 11 to reset, and the sound-absorbing cotton 21 can reduce noise;

[0029] The outer wall of the cylindrical box 1 is provided with a braking assembly for braking the L-shaped block 4. The braking assembly includes a rotating ring 5 rotatably connected to the outer wall of the cylindrical box 1. Two symmetrically arranged notches 6 are formed at the top of the rotating ring 5. The notches 6 are used in cooperation with the positioning grooves 17. When it is necessary to replace the second compression spring 19, the rotating ring 5 can be rotated first. The rotating ring 5 rotates the notch 6 to one side of the positioning groove 17. At this time, the positioning block 15 moves horizontally under the pulling force of the tension spring 16. The positioning block 15 drives the L-shaped block 4 to pop out. At this time, it can help to take out the outer sleeve 10, and then replace the internal second compression spring 19 to ensure stable elasticity.

[0030] Embodiment 2

[0031] Reference Figures 1-4 , on the basis of Embodiment 1, it is improved as follows: Two symmetrically arranged positioning grooves 17 are formed on the inner wall of the bottom of the cylindrical box 1. A positioning block 15 is slidably connected to the inner wall of the bottom of the positioning groove 17. The top of the positioning block 15 is fixedly connected to the bottom of the L-shaped block 4. The same tension spring 16 is fixedly connected between one side of the positioning block 15 and the inner wall of one side of the positioning groove 17.

[0032] However, as is well known to those skilled in the art, the working principle and wiring method of the electric push rod 9 are common knowledge. They all belong to conventional means or well-known common sense, and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An actuator spring element arrangement structure based on load reset, characterized in that Including: A cylindrical box (1), inside which a piston plate (11) is slidably connected. A connecting rod (2) is fixedly connected to the top of the piston plate (11). One end of the connecting rod (2) slidably penetrates through the cylindrical box (1) and is fixedly connected to a driving shaft (3). A driving assembly for driving the piston plate (11) to move up and down is arranged inside the cylindrical box (1). Strip-shaped holes (18) are formed on both sides of the cylindrical box (1). An L-shaped block (4) is slidably connected inside the strip-shaped holes (18). A reset assembly for helping the piston plate (11) to reset is arranged on the top of the L-shaped block (4). A braking assembly for braking the L-shaped block (4) is arranged on the outer wall of the cylindrical box (1).

2. The arrangement structure of the actuator spring element based on load reset according to claim 1, wherein, The driving assembly includes an electric push rod (9) fixedly connected to the inner wall of the bottom of the cylindrical box (1). The piston rod of the electric push rod (9) is fixedly connected to the bottom of the piston plate (11). Slide grooves (7) are formed on both inner walls of the cylindrical box (1). Sliders (8) are fixedly connected to both sides of the piston plate (11). The sliders (8) are slidably connected inside the slide grooves (7).

3. The arrangement structure of the actuator spring element based on load reset according to claim 1, characterized in that, Two symmetrically arranged fixing rods (12) are fixedly connected to the inner wall of the top of the cylindrical box (1). The fixing rods (12) slidably penetrate through the piston plate (11). A limiting block (14) is fixedly connected to the bottom of the fixing rod (12). A same first compression spring (13) is fixedly connected between the top of the limiting block (14) and the bottom of the piston plate (11).

4. A layout structure of an actuator spring element based on load reset according to claim 1, wherein, The reset assembly includes a fixing column (20) fixedly connected to the top of the L-shaped block (4). An outer sleeve (10) is sleeved on the outer wall of the fixing column (20). A second compression spring (19) is fixedly connected to the inner wall of the top of the outer sleeve (10). The bottom of the second compression spring (19) abuts against the top of the fixing column (20). Sound-absorbing cotton (21) is arranged on the inner wall of the outer sleeve (10).

5. A layout structure of an actuator spring element based on load reset according to claim 1, characterized in that The braking assembly includes a rotating ring (5) rotatably connected to the outer wall of the cylindrical box (1). Two symmetrically arranged notches (6) are formed on the top of the rotating ring (5).

6. A layout structure of actuator spring elements based on load reset according to claim 1, characterized in that, Two symmetrically arranged positioning grooves (17) are formed on the inner wall of the bottom of the cylindrical box (1). The positioning grooves (17) are used in cooperation with the notches (6). A positioning block (15) is slidably connected to the inner wall of the bottom of the positioning groove (17). The top of the positioning block (15) is fixedly connected to the bottom of the L-shaped block (4). A same tension spring (16) is fixedly connected between one side of the positioning block (15) and the inner wall of one side of the positioning groove (17).

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