CN214789307U

CN214789307U - Double-wheel limit actuator

Info

Publication number: CN214789307U
Application number: CN202121251031.6U
Authority: CN
Inventors: 张伟; 陈端钧
Original assignee: Zhonglei Zhilian Technology Taizhou Co ltd
Current assignee: Zhonglei Zhilian Technology Taizhou Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-11-19
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a double-wheel limit actuator, which belongs to the technical field of actuators for valves and solves the problem of insufficient control reliability, and the key points of the technical proposal are that a speed change gear assembly comprises a limit driven wheel and a limit gear, the lower end of a manual rod is fixedly connected with a limit driving wheel, the upper part of the limit driving wheel is supported against the inside of a shell through a shrapnel and is separated from the limit driven wheel in a dislocation way, and the manual rod pulls up a compression shrapnel to enable the limit driving wheel and the limit driven wheel to be meshed for transmission; be provided with first locating pin on the spacing driven wheel, be provided with 90 degrees first arc wall on the stop gear, the last second locating pin that is provided with of stop gear, the top of casing is provided with 180 degrees second arc walls, and first arc wall, second arc wall, spacing driven wheel and stop gear are concentric, and first locating pin activity has reached work convenience, laborsaving reliable effect in first arc wall, second locating pin activity in the second arc wall.

Description

Double-wheel limit actuator

Technical Field

The utility model relates to an executor field for the valve especially relates to a double round limit actuator.

Background

Generally, an automatic fluid on-off control valve is widely applied, relates to national defense, ships, industry, civil use and the like, and is used for driving and controlling the opening and closing action of the valve for an actuator. Therefore, the control structure of the manual lever and the manual lever has higher requirements on the rotating position for executing output and the rotating position for operating the manual lever, and the existing structure has the problems of low space utilization degree and unreliable executing action.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a double round limit actuator, improve the structure and integrate and reduce the space extravagant, reach the small and exquisite structure, the nimble reliable purpose of action.

In order to solve the technical problem, the technical scheme of the utility model is that: a double-wheel limit actuator comprises a shell, a motor, a speed change gear assembly, a manual rod and an output shaft, wherein the motor is positioned at the top of the shell and drives the speed change gear assembly, the speed change gear assembly is positioned in the shell and is connected with the output shaft, the speed change gear assembly comprises a limit driven wheel and a limit gear, the lower end of the manual rod is fixedly connected with a limit driving wheel, the upper part of the limit driving wheel abuts against the inside of the shell through an elastic sheet and is separated from the limit driven wheel in a dislocation way, and the manual rod pulls the compression elastic sheet to enable the limit driving wheel and the limit driven wheel to be meshed for transmission;

the limiting driven wheel is provided with a first positioning pin, the limiting gear is provided with a 90-degree first arc-shaped groove, the limiting gear is provided with a second positioning pin, the top of the shell is provided with a 180-degree second arc-shaped groove, the first arc-shaped groove, the second arc-shaped groove, the limiting driven wheel and the limiting gear are concentric, the first positioning pin moves in the first arc-shaped groove, and the second positioning pin moves in the second arc-shaped groove.

As a specific aspect of the present invention, it may be preferable that: the limiting driving wheel is of a half-tooth structure, and a fastening hole is formed in the center of the limiting driving wheel; the lower end of the manual rod is provided with a clamping table clamped on the fastening hole and provided with a clamp spring for fixing the limiting driving wheel, and the clamp spring is sleeved on the manual rod and is U-shaped.

As a specific aspect of the present invention, it may be preferable that: the shell comprises a top cover, a supporting wall and a bottom cover which are fixedly connected from top to bottom, contact switches are arranged at the positions, close to the two ends of the second arc-shaped groove, of the top cover, and the second positioning pins trigger the contact switches at the positions, close to the two ends of the second arc-shaped groove, of the second positioning pin.

As a specific aspect of the present invention, it may be preferable that: the output shaft is sleeved with a shaft sleeve, the lower end of the output shaft is provided with a square groove, and the outer wall of the shaft sleeve is provided with a step part and clamped in the shaft hole of the bottom plate.

The utility model discloses technical effect mainly embodies in following aspect: the limiting driven wheel and the limiting driving wheel are connected to complete manual switch valve control, the shell is reduced in height by the aid of the elastic sheet, the overall structure is flat and miniaturized, the manual lever is lifted during operation, and the manual lever does not play a role under the action of the elastic sheet in a general state; under the condition of electric control, the manual lever is not interfered, the speed can be regulated and controlled, the first positioning pin and the second positioning pin are used for positioning and regulating, and the operation reliability is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is an exploded view of the structure of the embodiment;

fig. 3 is a schematic view of an assembly structure in the embodiment.

Reference numerals: 1. a housing; 11. a top cover; 111. a second arc-shaped slot; 12. a support wall; 13. a bottom cover; 131. a shaft hole; 2. a motor; 3. a speed change gear assembly; 31. a limiting driven wheel; 311. a first positioning pin; 32. a limit gear; 321. a first arc-shaped slot; 322. a second positioning pin; 4. a manual lever; 41. clamping a platform; 5. an output shaft; 51. a shaft sleeve; 52. a square groove; 53. a step portion; 6. a limiting driving wheel; 61. a half-tooth structure; 62. a fastening hole; 7. a spring plate; 8. a clamp spring; 9. a contact switch.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.

Example (b):

a double-wheel limit actuator, shown with reference to fig. 1 and 2, includes a housing 1, a motor 2, a gear change assembly 3, a manual lever 4, and an output shaft 5. The motor 2 may be a servo motor 2 or a brushless dc motor 2. The housing 1 is flat, and the inner space of the housing 1 is fully utilized to reduce the height of the housing 1. The modification of the housing 1 is as follows: the housing 1 comprises a top cover 11, a supporting wall 12 and a bottom cover 13 which are fixedly connected from top to bottom, a contact switch 9 is arranged on the top cover 11 near two ends of the second arc-shaped groove 111, and the second positioning pin 322 triggers the contact switch at two ends of the second arc-shaped groove 111. The housing 1 is thickened at four corner positions and can be fixed by screws. So that the top cover 11, the support arms and the bottom cover 13 are fixed to each other. The contact switch 9 is directly fixed above the top cover 11, so that the installation and maintenance are convenient, and the connection of wires is convenient. Meanwhile, the state detection feedback can be realized, and the control reliability is improved.

As will be understood from fig. 2 and 3, the motor 2 is located at the top of the housing 1 and drives the speed change gear assembly 3, the speed change gear assembly 3 is located inside the housing 1 and connected to the output shaft 5, and the speed change gear assembly 3 includes a limit driven wheel 31 and a limit gear 32. The gear assembly 3 further comprises a plurality of gears, which are not explained herein, and the gears are configured to adjust the speed to improve the torque. In addition, the lower end of the manual rod 4 is fixedly connected with a limiting driving wheel 6, the upper part of the limiting driving wheel 6 is abutted against the inside of the shell 1 through an elastic sheet 7 and is separated from the limiting driven wheel 31 in a dislocation mode, and the manual rod 4 pulls up the compression elastic sheet 7 to enable the limiting driving wheel 6 and the limiting driven wheel 31 to be in meshing transmission.

The limiting driven wheel 31 is provided with a first positioning pin 311, the limiting gear 32 is provided with a 90-degree first arc-shaped groove 321, the limiting gear 32 is provided with a second positioning pin 322, the top of the shell 1 is provided with a 180-degree second arc-shaped groove 111, the first arc-shaped groove 321, the second arc-shaped groove 111, the limiting driven wheel 31 and the limiting gear 32 are concentric, the first positioning pin 311 moves in the first arc-shaped groove 321, and the second positioning pin 322 moves in the second arc-shaped groove 111.

The limiting driving wheel 6 is of a half-tooth structure 61, and a fastening hole 62 is formed in the center; the lower end of the manual rod 4 is provided with a clamping table 41 clamped on the fastening hole 62, and is provided with a clamp spring 8 for fixing the limit driving wheel 6, and the elastic sheet 7 is sleeved on the manual rod 4 and is turned up in a U shape. For half tooth structure 61, the space occupation of spacing action wheel 6 that can significantly reduce to assembly structure is reliable and stable.

The output shaft 5 is sleeved with a shaft sleeve 51, the lower end of the output shaft 5 is provided with a square groove 52, and the outer wall of the shaft sleeve 51 is provided with a step part 53 and clamped in the position of a shaft hole 131 of the bottom plate. The square groove 52 on the output shaft 5 is convenient for assembling and connecting the valve, and the shaft sleeve 51 is utilized to reduce shaking and improve the transmission reliability. If the shaft sleeve 51 is not used for assisting, the connection between the output shaft 5 and the valve easily enables the output shaft 5 to vibrate, so that the vibration is transmitted to the limiting driven wheel 31 at the upper end of the output shaft 5, and the service life is greatly reduced.

Through above-mentioned structural design and assembly, in the course of the work, adopt spacing follower 31 and spacing action wheel 6 to connect and accomplish manual switch valve control, utilize shell fragment 7 to reduce the height of casing 1, overall structure is flat, and is miniaturized, is realized through lifting manual pole 4 during the operation, because shell fragment 7 effect, manual pole 4 does not play a role under the general state.

The electric control is that the motor 2 drives the speed change gear assembly 3, the limiting driven wheel 31 is directly driven to rotate at the moment, the rotation angle of the limiting driven wheel 31 is controlled by the motor 2 on one hand, and is limited by the first arc-shaped groove 321 in addition to carry out double limiting protection, so that the rotation angle of the output shaft 5 is ensured to be within a 90-degree range.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. A double-wheel limit actuator comprises a shell (1), a motor (2), a speed change gear assembly (3), a manual rod (4) and an output shaft (5), wherein the motor (2) is located at the top of the shell (1) and drives the speed change gear assembly (3), the speed change gear assembly (3) is located inside the shell (1) and is connected with the output shaft (5), and the double-wheel limit actuator is characterized in that the speed change gear assembly (3) comprises a limit driven wheel (31) and a limit gear (32), the lower end of the manual rod (4) is fixedly connected with a limit driving wheel (6), the upper part of the limit driving wheel (6) is abutted against the inside of the shell (1) through an elastic sheet (7) and is separated from the limit driven wheel (31) in a dislocation way, and the limit driving wheel (6) and the limit driven wheel (31) are in meshing transmission by pulling and compressing the elastic sheet (7) on the manual rod (4);

be provided with first locating pin (311) on spacing driven wheel (31), be provided with 90 degrees first arc wall (321) on limiting gear (32), be provided with second locating pin (322) on limiting gear (32), the top of casing (1) is provided with 180 degrees second arc wall (111), and first arc wall (321), second arc wall (111), spacing driven wheel (31) and limiting gear (32) are concentric, and first locating pin (311) activity is in first arc wall (321), and second locating pin (322) activity is in second arc wall (111).

2. The dual wheel limit actuator of claim 1, wherein: the limiting driving wheel (6) is of a half-tooth structure (61), and a fastening hole (62) is formed in the center; the lower end of the manual rod (4) is provided with a clamping table (41) clamped on the fastening hole (62), a clamping spring (8) is assembled to fix the limiting driving wheel (6), and the elastic sheet (7) is sleeved on the manual rod (4) and is U-shaped to tilt.

3. The dual wheel limit actuator of claim 1, wherein: the shell (1) comprises a top cover (11), a supporting wall (12) and a bottom cover (13) which are fixedly connected from top to bottom, contact switches (9) are arranged at the positions, close to the two ends of the second arc-shaped groove (111), of the top cover (11), and the second positioning pins (322) trigger the contact switches at the positions, at the two ends of the second arc-shaped groove (111).

4. The dual wheel limit actuator of claim 3, wherein: the output shaft (5) is sleeved with a shaft sleeve (51), the lower end of the output shaft (5) is provided with a square groove (52), and the outer wall of the shaft sleeve (51) is provided with a step part (53) and clamped in the position of a shaft hole (131) of the bottom plate.