Damping electric actuator

Abstract

The utility model discloses a damping electric actuator which comprises an electric actuator body, an output shaft, an extension shaft, a damping shell, a through hole, a limiting inner cavity, a guide expansion block, a sealing block, a damping spring, a side opening hole and a dismounting block. Compared with the prior art, the damping electric actuator has the advantages that aiming at the problems that a damping assembly is inconvenient to replace and high in maintenance cost in the prior art, the damping electric actuator is provided, the damping spring can be conveniently and rapidly replaced while the damping effect is guaranteed, and the operation efficiency and the use convenience of equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric actuator, especially a shock-absorbing electric actuator. BACKGROUND

[0002] In modern industrial automation and mechanical equipment, electric actuators are widely used in various control systems. Electric actuators drive mechanical devices through electric motors to achieve precise linear or rotary motion, commonly used in automatic control of valves, dampers, regulators and other equipment. In some specific scenarios, the existence of vibration and impact load can significantly affect the working accuracy and service life of electric actuators. In order to reduce the impact of vibration and impact on equipment, the design of shock-absorbing devices becomes particularly important.

[0003] Currently, most electric actuators use traditional shock-absorbing components such as rubber pads and metal springs. These shock-absorbing components can buffer impact force to some extent, but their performance will gradually decrease over time and require regular maintenance and replacement. In addition, existing electric actuators often require a lot of time and manpower to replace shock-absorbing components, and the replacement process is complex, increasing maintenance costs.

[0004] Therefore, in view of the problems of inconvenient replacement and high maintenance cost of shock-absorbing components in the prior art, there is an urgent need for a shock-absorbing electric actuator that can conveniently and quickly replace shock-absorbing springs while ensuring shock-absorbing effect, to improve the operating efficiency and use convenience of the equipment. SUMMARY

[0005] The utility model aims to provide a shock-absorbing electric actuator to solve the problems raised in the background art.

[0006] The utility model discloses a technical purpose above is realized through the following technical scheme: a shock absorption electric actuator, including electric actuator body, electric actuator body has with the valve rod in the valve and provides the power output shaft of fixed, its characterized in that: electric actuator body lower extreme fixedly seted up two respectively located the extension shaft of output shaft opposite two sides, still including the shock absorption component of electric actuator body below, the shock absorption component includes shock absorption casing, shock absorption casing is fixed on the valve body through screw, the perforation of shock absorption casing is opened and is passed to the output shaft, shock absorption casing is opened and is located two limit inner cavities of two extension shafts and is inserted respectively, two extension shafts outside all fixedly seted up the guide expansion piece, the extension shaft and guide expansion piece cooperation and the two sides inner wall of limit inner cavity are pasted to keep the vertical direction movement of extension shaft, two limit inner cavities all are equipped with the block of screw cover on the upper end, the block can be contacted with guide expansion piece to reach the purpose of limiting extension shaft, two limit inner cavities all are equipped with the shock absorption spring of with corresponding extension shaft and guide expansion piece lower end contact to play the shock absorption effect,

[0007] Shock absorption casing opposite two sides all are opened and have with the side opening hole of corresponding limit inner cavity, two side opening holes all can detachably be equipped with the block, after the block of arbitrary is taken off, corresponding limit inner cavity will be exposed to the outside, to facilitate the operator to carry out the replacement operation of corresponding shock absorption spring.

[0008] Further setting is: the lower pressure hole is opened in the shock absorption casing and is above the side opening hole, the lower end of the lower pressure hole is communicated with the side opening hole, and the lower pressure block is arranged in the lower pressure hole; the upper end of the block is provided with a pressure concave surface, and after the block is placed in the side opening hole, the lower pressure block can be pressed into the pressure concave surface, so that the block is pressed and fixed.

[0009] Further setting is: the lower pressure block has an inclined avoiding slope on the outside, and the avoiding slope can contact the block during the process that the block is placed in the side opening hole, so that the lower pressure block can move upwards, and the process that the block is placed in the side opening hole will not be blocked by the lower pressure block.

[0010] Further setting is: the first driving section in the lower pressure hole is fixedly arranged on the upper end of the lower pressure block, and the two sides of the first driving section are respectively attached to the two inner walls of the lower pressure hole, so as to keep the vertical direction movement of the first driving section.

[0011] The lower pressure spring is arranged in the lower pressure hole and provides a downward moving force for the lower pressure block.

[0012] Further settings are: the upper end of the first driving section is fixedly provided with a second driving section, and the lower end of the sealing block is fixedly provided with an embedded section embedded into the pressing hole; and the pressing spring is compressed between the embedded section and the second driving section.

[0013] Further settings are: the damping shell is provided with an operation hole outside the pressing hole; the operation hole is in communication with the pressing hole on the inner side and extends to the outer wall of the damping shell on the outer side; the operation hole is provided with an operation block; the operation block is embedded into the pressing hole and in contact with the second driving section; one end of the operation block in contact with the second driving section is provided with a first operation surface; one end of the second driving section in contact with the operation block is provided with a second operation surface; the first operation surface and the second operation surface are matched and can be attached to each other; and the operation block is moved inward, thereby driving the second driving section and the pressing block to move upward.

[0014] The outer side of the operation block is fixedly provided with a force applying shaft extending out of the operation hole; the outer side of the operation hole is fixedly provided with a first anti-disengagement block in contact with the operation block; and the first anti-disengagement block is provided with a through hole for the force applying shaft to extend out.

[0015] Further settings are: the damping shell is provided with a positioning groove below the side opening; the lower end of the positioning groove is a groove bottom, the upper end is a groove opening and is in communication with the side opening; a positioning block is slidingly arranged in the positioning groove; the upper end of the positioning block is an arc surface; and the lower end of the disassembly block is provided with a positioning concave surface; after the disassembly block is arranged in the side opening, the positioning block can be extended upward into the positioning concave surface to achieve the purpose of positioning the disassembly block; and after the positioning block is extended upward into the positioning concave surface, the pressing block is aligned with the pressed concave surface.

[0016] The groove opening of the positioning groove is fixedly provided with a second anti-disengagement block for limiting the positioning block.

[0017] The positioning spring is compressed between the groove bottom of the positioning groove and the positioning block to provide a force for the upward movement of the positioning block.

[0018] The utility model has the following beneficial effects:

[0019] 1、The damping spring in the two limiting inner cavities in the damping shell gives the electric actuator body damping function to improve the stability and prolong the service life of the electric actuator body; the side opening is arranged on the opposite sides of the damping shell for the disassembly block to be detachably arranged; the operator disassembles the disassembly block, so that the corresponding limiting inner cavity is exposed to the outside, facilitating the replacement operation of the corresponding damping spring; the process of replacing the damping spring is simple and convenient, effectively reducing the maintenance cost.

[0020] 2. The utility model discloses a lower pressing block is pressed into the pressed concave surface to reach the purpose of pressing solid.

[0021] 3. The utility model discloses the avoidance bevel can be contacted with the dismantling block in the process of being placed in the side opening, so that the lower pressing block can be moved up, and the process of being placed in the side opening is not blocked by the lower pressing block.

[0022] 4. The utility model discloses that the both sides of first driving section are respectively attached to the two side inner walls of lower pressing hole, keep the vertical direction movement of itself, provide guarantee for the alignment of lower pressing block and pressed concave surface, and the lower pressing spring can provide the force for the downward movement of lower pressing block.

[0023] 5. The utility model discloses the embedding section and second driving section are set up to limit lower pressing spring.

[0024] 6. The utility model discloses the first operation surface and second operation surface are set up to reach the purpose of controlling the movement of lower pressing block, and only need to control the inward movement of operation block, can drive second driving section and lower pressing block to move up together, and the setting of force shaft can be convenient for operator to press to control the inward movement of operation block, and the first stop block can be contacted with operation block to reach the purpose of stopping.

[0025] 7. The utility model discloses the positioning block can be stretched into the positioning concave surface to position dismantling block, so that the lower pressing block can be aligned with the position of pressed concave surface, and the arc surface of the upper end of positioning block can realize the independent adjustment, and is more flexible, and the positioning spring can provide the force for the upward movement of positioning block. DRAWINGS

[0026] Figure 1 It is the structural schematic diagram of example;

[0027] Figure 2 It is the structural schematic diagram of example; Figure 1

[0028] Figure 3 It is the structural schematic diagram of example; Figure 2

[0029] Figure 4 It is the structural schematic diagram of example; Figure 2

[0030] ​​​In the figure: 11, electric actuator body; 12, output shaft; 13, extension shaft; 21, damping shell; 22, through hole; 23, limiting inner cavity; 24, guide expansion block; 25, damping spring; 31, sealing block; 311, embedded section; 41, side opening; 42, dismounting block; 421, pressure concave surface; 422, pull handle; 51, pressing hole; 52, pressing block; 521, avoidance inclined surface; 53, pressing spring; 61, first driving section; 62, second driving section; 621, second operation surface; 63, fixed connecting block; 71, operation hole; 72, operation block; 721, first operation surface; 73, force applying shaft; 74, first anti-disengaging block; 741, through hole; 81, positioning groove; 82, positioning block; 83, second anti-disengaging block; 84, positioning spring; 91, positioning concave surface. DETAILED DESCRIPTION

[0031] The utility model will be made further detailed explanation in combination with the drawings.

[0032] As shown in the accompanying drawings; Figures 1 to 4 ;

[0033] The embodiment discloses a damping electric actuator, including electric actuator body 11, electric actuator body 11 has with the valve stem in the valve and provides power for it output shaft 12, electric actuator body 11 lower end fixedly arranged with two respectively located output shaft 12 opposite sides two extension shafts 13, still including the damping component located electric actuator body 11 below, damping component includes damping shell 21, damping shell 21 is fixed on the valve body by screw, damping shell 21 in the through hole 22 for the output shaft 12 is passed through is set up, damping shell 21 in the two limiting inner cavities 23 for two extension shafts 13 extension is set up respectively, two extension shafts 13 outside fixedly arranged with guide expansion block 24, extension shaft 13 and guide expansion block 24 cooperate with the two sides inner wall of limiting inner cavity 23 and stick to each other, to let extension shaft 13 keep vertical direction movement, two limiting inner cavities 23 upper end are all set up sealing block 31 through screw cover, sealing block 31 can be with guide expansion block 24 and collide to reach the purpose of limiting extension shaft 13, two limiting inner cavities 23 in all are set up with corresponding extension shaft 13 and guide expansion block 24 lower end contact to play the damping effect of damping spring 25,

[0034] Damping shell 21 opposite sides all are set up with corresponding limiting inner cavity 23 side opening 41, two side openings 41 all can be detachably set up with dismounting block 42, after dismounting any one dismounting block 42, corresponding limiting inner cavity 23 will be exposed to the outside, to facilitate the operator to carry out corresponding damping spring 25 replacement operation.

[0035] In the embodiment, the outer side of the dismounting block 42 is fixedly provided with a pull handle 422 for easy pulling out to complete the dismounting.

[0036] The damping shell 21 is provided with a pressing hole 51 above the side opening 41, the lower end of the pressing hole 51 is communicated with the side opening 41, and a pressing block 52 is arranged in the pressing hole 51.

[0037] The pressing block 52 is provided with an inclined avoiding slope 521 on the outer side, the avoiding slope 521 can be in contact with the dismounting block 42 during the process of placing the dismounting block 42 into the side opening 41, so that the pressing block 52 can be moved upward, and the process of placing the dismounting block 42 into the side opening 41 will not be blocked by the pressing block 52.

[0038] The upper end of the pressing block 52 is fixedly provided with a first driving section 61 located in the pressing hole 51, and the two sides of the first driving section 61 are respectively attached to the inner walls of the two sides of the pressing hole 51, so as to keep the vertical movement of the first driving section 61.

[0039] The pressing hole 51 is provided with a pressing spring 53 for providing downward movement force to the pressing block 52.

[0040] The upper end of the first driving section 61 is fixedly provided with a second driving section 62, and the first driving section 61 and the second driving section 62 are fixedly connected through a fixed connection block 63; the lower end of the sealing block 31 is fixedly provided with an embedded section 311 extending into the pressing hole 51, and the pressing spring 53 is arranged between the embedded section 311 and the second driving section 62.

[0041] The damping shell 21 is provided with an operation hole 71 located on the outer side corresponding to the pressing hole 51, the inner side of the operation hole 71 is communicated with the pressing hole 51, and the outer side extends to the outer wall of the damping shell 21; the operation hole 71 is provided with an operation block 72, the operation block 72 extends into the pressing hole 51 and is in contact with the second driving section 62, one end of the operation block 72 in contact with the second driving section 62 is provided with an inclined first operation surface 721, and the other end of the second driving section 62 in contact with the operation block 72 is provided with an inclined second operation surface 621, the first operation surface 721 and the second operation surface 621 are matched and can be attached, and with the inward movement of the operation block 72, the second driving section 62 and the pressing block 52 will be moved upward together.

[0042] The outer side of the operation block 72 is fixedly provided with a force applying shaft 73 extending out of the operation hole 71, and the outer side of the operation hole 71 is fixedly provided with a first anti-disengagement block 74 capable of being in contact with the operation block 72, and the first anti-disengagement block 74 is provided with a through hole 741 for the force applying shaft 73 to extend out.

[0043] The damping shell 21 is provided with a positioning groove 81 below the side opening 41, the lower end of the positioning groove 81 is a groove bottom, the upper end is a groove opening and communicates with the side opening 41, a positioning block 82 is slidably arranged in the positioning groove 81, the upper end of the positioning block 82 is an arc surface, the lower end of the block 42 is provided with a positioning concave surface 91, after the block 42 is placed into the side opening 41, the positioning block 82 can be upwardly extended into the positioning concave surface 91 to achieve the purpose of positioning the block 42, and when the positioning block 82 is upwardly extended into the positioning concave surface 91, the lower pressing block 52 is aligned with the pressure receiving concave surface 421.

[0044] The second anti-disengagement block 83 of the positioning block 82 is fixedly arranged at the groove opening of the positioning groove 81.

[0045] The positioning spring 84 providing the upward moving force for the positioning block 82 is compressed between the groove bottom of the positioning groove 81 and the positioning block 82.

[0046] The working principle of the embodiment is as follows:

[0047] The damping spring 25 can be in contact with the corresponding extension shaft 13 and the guide expansion block 24 to play a damping effect.

[0048] When the damping spring 25 is invalid, the operator can press the corresponding force applying shaft 73, the force applying shaft 73 drives the operation block 72 to move inwardly, since the first operation surface 721 and the second operation surface 621 are matched and kept in close contact, with the inward movement of the operation block 72, the second driving section 62 and the lower pressing block 52 are driven to move upwardly, thereby making the lower pressing block 52 disengage from the pressure receiving concave surface 421, and the block 42 is in a movable state, then the block 42 is pulled out by the pull handle 422, and the disassembly of the block 42 is completed; after the block 42 is disassembled, the corresponding limiting inner cavity 23 is exposed to the outside, and the operator can replace the damping spring 25.

[0049] After the damping spring 25 is replaced, the block 42 is pushed into the side opening 41 again, the positioning block 82 is upwardly extended into the positioning concave surface 91 to position the block 42, so that the lower pressing block 52 is aligned with the pressure receiving concave surface 421; at this time, the lower pressing block 52 is accurately pressed downwardly into the pressure receiving concave surface 421 to achieve the purpose of pressing the block 42.

[0050] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A shock mounted electric actuator comprising an electric actuator body (11) having an output shaft (12) fixed to and providing motive force to a stem within a valve; characterised in that: The electric actuator body (11) is fixedly provided with two extension shafts (13) located at opposite sides of the output shaft (12) at the lower end, and further comprises a damping member located below the electric actuator body (11), wherein the damping member comprises a damping shell (21) fixed on the valve body by screws, and a through hole (22) is formed in the damping shell (21) for the output shaft (12) to pass through; two limiting inner cavities (23) are formed in the damping shell (21) for the two extension shafts (13) to extend into, respectively, and a guide expansion block (24) is fixedly arranged outside each of the two extension shafts (13), and the extension shaft (13) and the guide expansion block (24) are in close contact with the two side inner walls of the limiting inner cavity (23) to keep the extension shaft (13) moving in the vertical direction; a sealing block (31) is arranged on the upper end of each of the two limiting inner cavities (23) by a screw cap, and the sealing block (31) can collide with the guide expansion block (24) to limit the extension shaft (13); a damping spring (25) is arranged in each of the two limiting inner cavities (23) to contact the lower end of the corresponding extension shaft (13) and guide expansion block (24) to play a damping role; The damping shell (21) is provided with a side opening (41) at each of the opposite sides, which is in communication with the corresponding limiting inner cavity (23), and a dismounting block (42) is detachably arranged in each of the two side openings (41), so that when any one of the dismounting blocks (42) is dismounted, the corresponding limiting inner cavity (23) is exposed to the outside, thereby facilitating the operator to replace the corresponding damping spring (25).

2. A shock mounted electric actuator according to claim 1 wherein: A pressing hole (51) is formed in the damping shell (21) above the side opening (41), the lower end of the pressing hole (51) is in communication with the side opening (41), and a pressing block (52) is arranged in the pressing hole (51); a pressure receiving concave surface (421) is formed in the upper end of the dismounting block (42), and after the dismounting block (42) is placed in the side opening (41), the pressing block (52) can be pressed downward into the pressure receiving concave surface (421) to achieve the purpose of pressing and fixing the dismounting block (42).

3. A shock mounted electric actuator according to claim 2 wherein: The outer side of the pressing block (52) is provided with an inclined avoiding slope (521), which can contact the dismounting block (42) during the process of placing the dismounting block (42) in the side opening (41), so that the pressing block (52) can move upward, and the process of placing the dismounting block (42) in the side opening (41) will not be blocked by the pressing block (52).

4. A shock mounted electric actuator according to claim 3 wherein: A first driving section (61) is fixedly arranged on the upper end of the pressing block (52) and located in the pressing hole (51), and the two side walls of the first driving section (61) are in close contact with the two side inner walls of the pressing hole (51) to keep the first driving section (61) moving in the vertical direction. A pressing spring (53) is arranged in the pressing hole (51) to provide a downward moving force for the pressing block (52).

5. A shock mounted electric actuator according to claim 4 wherein: The first driving section (61) is fixedly provided with a second driving section (62) at the upper end, the sealing block (31) is fixedly provided with an embedded section (311) extending into the pressing hole (51) at the lower end, and the pressing spring (53) is compressed between the embedded section (311) and the second driving section (62).

6. A shock mounted electric actuator according to claim 5 wherein: The damping shell (21) is provided with an operation hole (71) on the side corresponding to the outside of the pressing hole (51), the operation hole (71) is in communication with the pressing hole (51) on the inside and extends to the outer wall of the damping shell (21) on the outside, the operation hole (71) is provided with an operation block (72) on the inside, the operation block (72) extends into the pressing hole (51) and contacts the second driving section (62), one end of the operation block (72) contacting the second driving section (62) is provided with a first operation surface (721) obliquely, one end of the second driving section (62) contacting the operation block (72) is provided with a second operation surface (621) obliquely, the first operation surface (721) and the second operation surface (621) are matched and can be kept in close contact, and with the operation block (72) moving inward, the second driving section (62) and the pressing block (52) are driven to move upward together; The operation block (72) is fixedly provided with a force applying shaft (73) extending outwardly out of the operation hole (71) on the outside, and the operation hole (71) is fixedly provided with a first anti-disengagement block (74) capable of contacting the operation block (72) on the outside, and the first anti-disengagement block (74) is provided with a via hole (741) for the force applying shaft (73) to extend out.

7. A shock mounted electric actuator according to claim 2, wherein: The damping shell (21) is provided with a positioning groove (81) below the side opening (41), the lower end of the positioning groove (81) is a groove bottom, the upper end is a groove opening and is in communication with the side opening (41), and the positioning groove (81) is slidably provided with a positioning block (82), the upper end of the positioning block (82) is an arc surface, the lower end of the disassembly block (42) is provided with a positioning concave surface (91), after the disassembly block (42) is placed into the side opening (41), the positioning block (82) can extend upwardly into the positioning concave surface (91), so as to achieve the purpose of positioning the disassembly block (42), and when the positioning block (82) extends upwardly into the positioning concave surface (91), the pressing block (52) is aligned with the pressed concave surface (421); The positioning groove (81) is fixedly provided with a second anti-disengagement block (83) limiting the positioning block (82) at the groove opening; The positioning spring (84) providing a force for the upward movement of the positioning block (82) is compressed between the groove bottom of the positioning groove (81) and the positioning block (82).

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