Locking structure of multi-rotary valve electric actuator
阅读说明:本技术 一种多回转阀门电动执行器锁紧结构 (Locking structure of multi-rotary valve electric actuator ) 是由 黄臶 于 2018-08-28 设计创作,主要内容包括:本发明提供了一种多回转阀门电动执行器锁紧结构,包括连接杆,其包括花键段,花键段上套接有一能沿连接杆长度方向运动的扭矩齿轮;锁紧单元,其包括能抱紧连接杆的锁紧环;手动齿轮,其设于扭矩齿轮周测,且与扭矩齿轮之间存有间隙;离合单元,其包括离合齿轮,所述离合齿轮能同时啮合或同时脱离扭矩齿轮和手动齿轮;当手动齿轮和扭矩齿轮与离合齿轮相啮合的时候锁紧单元不抱紧连接杆,当离合齿轮脱离手动齿轮和扭矩齿轮时,锁紧单元抱紧连接杆。本发明所述的一种多回转阀门电动执行器锁紧结构,采用离合单元和锁紧单元相配合,使电动执行器在手动模式下能够快速的对阀门进行调整,同时在调整后能对连接杆进行锁紧,方式阀门状态变化。(The invention provides a locking structure of a multi-rotary valve electric actuator, which comprises a connecting rod, a locking mechanism and a locking mechanism, wherein the connecting rod comprises a spline section, and a torque gear capable of moving along the length direction of the connecting rod is sleeved on the spline section; the locking unit comprises a locking ring which can hold the connecting rod tightly; the manual gear is arranged on the periphery of the torque gear, and a gap is reserved between the manual gear and the torque gear; a clutch unit including a clutch gear that can simultaneously engage or disengage the torque gear and the manual gear; when the manual gear and the torque gear are meshed with the clutch gear, the locking unit does not tightly hold the connecting rod, and when the clutch gear is separated from the manual gear and the torque gear, the locking unit tightly holds the connecting rod. According to the locking structure of the multi-rotary valve electric actuator, the clutch unit and the locking unit are matched, so that the electric actuator can rapidly adjust the valve in a manual mode, and meanwhile, a connecting rod can be locked after adjustment, and the mode of valve state change.)
1. The utility model provides a many gyration valve electric actuator locking structure which characterized in that: comprises that
The connecting rod (1) comprises a spline section (11), and a torque gear (13) capable of moving along the length direction of the connecting rod (1) is sleeved on the spline section (11);
the locking unit (3) comprises a locking ring (31) which can hold the connecting rod (1) tightly;
the manual gear (4) is arranged on the circumferential side of the torque gear (13) and has a gap with the torque gear (13);
a clutch unit (2) comprising a clutch gear (21), the clutch gear (21) being capable of engaging or disengaging simultaneously the torque gear (13) and the manual gear (4);
when the manual gear (4) and the torque gear (13) are meshed with the clutch gear (21), the locking unit (3) does not tightly hold the connecting rod (1), and when the clutch gear (21) is separated from the manual gear (4) and the torque gear (13), the locking unit (3) tightly holds the connecting rod (1).
2. The locking structure of the multi-rotary valve electric actuator according to claim 1, wherein: the locking ring (31) comprises two locking petals (311) which can be close to or far away from each other, a locking rod (32) extends from the end part of each locking petal (311), and the tail ends of the two locking rods (32) are far away from each other to form a locking gap (36);
a trapezoid round platform (24) can enter the locking gap (36), and the side wall of the trapezoid round platform (24) can tightly abut against the two locking rods (32).
3. The locking structure of the multi-rotary valve electric actuator according to claim 2, wherein: every locking lever (32) middle part all is equipped with pin joint (33), is equipped with a spring (35) between two locking levers (32), the both ends of spring (35) support respectively in between pin joint (33) and the locking lamella (311) of two locking levers (32).
4. A multi-rotary-valve electric actuator locking arrangement as claimed in claim 3, wherein: two locking lever (32) are all extended a spacing nail relatively, the both ends of spring (35) cup joint respectively on two fibre nails (34).
5. The locking structure of the multi-rotary valve electric actuator according to claim 1, wherein: the clutch unit (2) further comprises a clutch rod (25), one end of the clutch rod (25) is fixedly connected with the clutch gear (21) in a coaxial mode, the locking circular truncated cone is fixedly connected with the other end of the clutch rod (25), and the clutch rod (25) can reciprocate along the length direction.
6. The locking structure of the multi-rotary valve electric actuator according to claim 5, wherein: the clutch unit (2) further comprises a U-shaped frame (23) and a clutch rod sleeve (26), two end portions of one side of an opening of the U-shaped frame (23) are provided with long round holes (231), the middle of the clutch rod sleeve (26) is hinged to the U-shaped frame (23) at the long round holes (231), one end of the clutch rod sleeve (26) is in contact with the trapezoid round table (24), and the other end of the clutch rod sleeve is in contact with the clutch gear (21).
7. The locking structure of the multi-rotary valve electric actuator according to claim 6, wherein: one closed side of the U-shaped frame (23) is connected with a handle (22).
8. The locking structure of the multi-rotary valve electric actuator according to claim 1, wherein: the manual gear (4) is coaxially connected with a hand wheel (41).
9. The locking structure of the multi-rotary valve electric actuator according to claim 1, wherein: the connecting rod (1) further comprises a threaded section (12), and the locking ring (31) can hold the connecting rod (1) tightly in the threaded section (12).
10. The locking structure of the multi-rotary valve electric actuator according to claim 2, wherein: and an anti-slip strip (37) is fixedly arranged on the inner side of the locking flap (311).
Technical Field
The invention belongs to the field of valve electric actuators, and particularly relates to a locking structure of a multi-rotary valve electric actuator.
Background
The multi-rotary valve is switched to be opened and closed by lifting or lowering the valve rod, the conventional multi-rotary valve electric actuator usually utilizes the rotation of the screw rod structure to generate displacement to control the opening and closing of the valve, but when the electric actuator is powered off, the electric actuator is required to be manually operated to adjust the opening and closing of the valve or the opening amount of the valve, the electric actuator is not favorably locked, the valve is not closed tightly or the flow of fluid is changed, and the production is influenced.
Disclosure of Invention
In view of the above, the present invention is directed to a locking structure of a multi-rotary valve electric actuator, so as to lock a valve rod after a valve is manually adjusted in case of power failure, and prevent the valve rod from slowly sliding downward due to its own weight.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a locking structure of multi-rotary valve electric actuator comprises
The connecting rod comprises a spline section, and a torque gear capable of moving along the length direction of the connecting rod is sleeved on the spline section;
the locking unit comprises a locking ring which can hold the connecting rod tightly;
the manual gear is arranged on the periphery of the torque gear, and a gap is reserved between the manual gear and the torque gear;
a clutch unit including a clutch gear that can simultaneously engage or disengage the torque gear and the manual gear;
when the manual gear and the torque gear are meshed with the clutch gear, the locking unit does not tightly hold the connecting rod, and when the clutch gear is separated from the manual gear and the torque gear, the locking unit tightly holds the connecting rod. The valve rod of the valve is connected by the connecting rod, the locking unit is separated from the connecting rod in a manual mode of the electric actuator, so that the manual mode operation is more convenient, and meanwhile, the connecting rod is tightly held by the locking ring after the valve is manually adjusted, so that the state of the valve is prevented from being changed due to self reasons.
Furthermore, the locking ring comprises two locking petals which can be close to or far away from each other, a locking rod extends from the end part of each locking petal, and the tail ends of the two locking rods are far away from each other to form a locking gap;
a trapezoidal round platform can get into in the locking clearance, and trapezoidal round platform lateral wall can tightly support in two locking levers. For the locking ring to be completely disengaged from the connecting rod in the manual mode.
Furthermore, each locking rod is provided with a hinge point in the middle, a spring is arranged between the two locking rods, and two ends of the spring respectively abut against the hinge point of the two locking rods and the locking valve. The locking device is used for separating the two locking petals when the trapezoidal boss is separated from the locking gap.
Furthermore, two locking levers all extend a spacing nail relatively, the both ends of spring cup joint respectively on two fibre nails.
Furthermore, the clutch unit further comprises a clutch rod, one end of the clutch rod is fixedly connected with the clutch gear in a coaxial mode, the locking circular truncated cone is fixedly connected with the other end of the clutch rod, and the clutch rod can reciprocate along the length direction.
Furthermore, the clutch unit further comprises a U-shaped frame and a clutch rod sleeve, the two end parts of one side of the opening of the U-shaped frame are provided with oblong holes, the middle part of the clutch rod sleeve is hinged with the U-shaped frame at the oblong holes, one end of the clutch rod sleeve is in contact with the trapezoidal round table, and the other end of the clutch rod sleeve is in contact with the clutch gear.
Furthermore, one side of the closed opening of the U-shaped frame is connected with a handle and used for conveniently controlling the clutch lever to move up and down.
Further, the manual gear is coaxially connected with a hand wheel. For controlling the rotation of the manual gear.
Further, the connecting rod still includes the screw thread section, the locking ring can hold the connecting rod tightly in the screw thread section. The connecting rod can still move up and down under the driving of external force in a locking state.
Furthermore, the inner side of the locking flap is fixedly provided with an anti-slip strip.
Compared with the prior art, the locking structure of the multi-rotary valve electric actuator has the following advantages:
the clutch lever and the locking lever are matched, so that the electric actuator can quickly adjust the valve in a manual mode, and can lock the connecting rod after adjustment, and the state of the valve is changed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a locking unit;
fig. 3 is a sectional view of the clutch unit.
Description of reference numerals:
1-a connecting rod; 11-a spline section; 12-a thread segment; 13-torque gear; 2-a clutch unit; 21-clutch gear; 22-a handle; 23-a U-shaped frame; 231-oblong holes; 24-a trapezoidal truncated cone; 25-a clutch lever; 26-a clutch lever sleeve; 3-a locking unit; 31-a locking ring; 311-locking lobes; 32-a locking lever; 33-hinge point; 34-fiber nails; 35-a spring; 36-locking clearance; 37-antislip strips; 4-a manual gear; 41-hand wheel.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A locking structure of a multi-rotary valve electric actuator comprises a connecting
a
A hand-operated
The circumference of the connecting
And
The locking structure of the multi-rotary valve electric actuator further comprises a shell, the
In the locking structure of the multi-rotary-valve electric actuator, the valve rod is driven by the connecting
In the manual mode of the electric actuator, the
The
The shell is provided with a limiting device of the
The connection of the end of the connecting
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
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