CN209963903U

CN209963903U - Double-protection electric operating mechanism

Info

Publication number: CN209963903U
Application number: CN201920480964.9U
Authority: CN
Inventors: 黄庆锋; 孙海东; 陈曙; 叶宏; 付进
Original assignee: NINGBO BAOXIN RAILWAY SIGNALING EQUIPMENT MANUFACTURING CO LTD; Electrical engineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Current assignee: NINGBO BAOXIN RAILWAY SIGNALING EQUIPMENT MANUFACTURING CO LTD; Electrical engineering Co Ltd of China Railway No 2 Engineering Group Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-17
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a two protection electric operating mechanism, it includes the motor, the cam, the output connecting lever, two first limit travel switch, two second limit travel switch, and the controller, wherein the cam is connected in the rotation axis of motor, the output connecting lever sets up in the cam fixedly, two first limit travel switch set up in the motion stroke of cam, two second limit travel switch set up in the motion stroke of output connecting lever, the controller is connected respectively in two first limit travel switch and two second limit travel switch, the controller is according to two first limit travel switch and two second limit travel switch's contact action output corresponding control signal. The utility model discloses a set up first limit travel switch and second limit travel switch and realized providing duplicate protection for electric operating mechanism, improved the stability and the reliability of equipment operation.

Description

Double-protection electric operating mechanism

Technical Field

The utility model relates to a two protection electric operating mechanism.

Background

The travel switch is a common small-current master control electrical appliance, and the contact of the travel switch is operated by the collision of mechanical moving parts to realize the connection or disconnection of a control circuit, thereby achieving a certain control purpose. In actual production, the travel switch is arranged at a prearranged position, and when a module arranged on a moving part of the production machine impacts the travel switch, a contact of the travel switch acts to realize the switching of a circuit. Accordingly, a travel switch is an electrical appliance that switches a circuit according to a travel position of a moving part. Generally, such switches are used to limit the position or stroke of the movement of the machine, so that the moving machine can automatically stop, move in reverse, shift or automatically move back and forth according to a certain position or stroke.

However, in the conventional electric operating mechanism, there is an unreasonable phenomenon regarding the protection design of the stroke switch, and generally, due to the limitation of the production cost or the installation condition, only one-way stroke switch limitation is provided for the electric operating mechanism, and once the one-way stroke switch fails, the normal operation of the electric operating mechanism cannot be guaranteed, and the reliability is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two protection electric operating mechanism has solved above-mentioned problem to a certain extent, can provide dual stroke protection for the motion machinery, has improved the stability and the reliability of equipment operation.

In order to achieve the above object, the utility model provides a two protection electric operating mechanism, it includes:

motor, cam, output connecting lever, two first limit travel switch, two second limit travel switch and controller, wherein the cam connect in the rotation axis of motor, the output connecting lever set up with the cam, two first limit travel switch sets up in the motion stroke of cam, two second limit travel switch sets up in the motion stroke of output connecting lever, the controller is connected respectively in two first limit travel switch and two second limit travel switch, the controller is according to two first limit travel switch and two the corresponding control signal of second limit travel switch's contact action output.

The cam is suitable for connecting external motion machinery, motor drive the cam is rotatory, the output connecting lever is in synchronous rotation under the drive of cam, two first spacing travel switch does the motion stroke of cam provides first spacing protection, two second spacing travel switch does the motion stroke of cam provides the spacing protection of second way, through such design, has realized providing duplicate protection for electric operating mechanism, has improved equipment operation's stability and reliability.

According to the utility model discloses a preferred embodiment, first limit travel switch is provided with wobbling and touches the arm, it is suitable for the collision to touch the arm the edge of cam.

According to the utility model discloses a preferred embodiment, second limit travel switch is provided with the feeler lever, the feeler lever is suitable for the collision output connecting lever.

Preferably, the two first limit switches are disposed symmetrically about the rotational center of the cam, and the two second limit switches are disposed symmetrically about the rotational center of the output crank arm.

According to the utility model discloses a preferred embodiment, two protect electric operating mechanism further include the fixing base, the fixing base includes bottom plate and riser, the cam rotatably set up in the riser, two first limit travel switch sets up the top of cam, two second limit travel switch sets up the bottom plate, the feeler lever sets up the below of output connecting lever.

The above and other objects, features and advantages of the present invention will be further apparent from the following detailed description and the accompanying drawings.

Drawings

Fig. 1 is a front view in accordance with a preferred embodiment of the present invention;

fig. 2 is a side view of a preferred embodiment according to the present invention;

in the figure: a motor 10; a cam 20; an output crank arm 30; a first limit travel switch 41; a contact arm 411; a second limit travel switch 42; a feeler lever 421; a fixed seat 50; a bottom plate 51; a riser 52.

Detailed Description

The following description will be further described with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the following described embodiments or technical features can be used to form a new embodiment without conflict.

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 and 2 of the drawings, a dual protection electric operating mechanism according to a preferred embodiment of the present invention will be explained in the following description, which includes a motor 10, a cam 20, an output crank arm 30, two first limit travel switches 41, two second limit travel switches 42, and a controller (not shown), wherein the cam 20 is connected to a rotation shaft of the motor 10, and the output crank arm 30 is fixedly provided to the cam 20. Two of the first limit travel switches 41 are provided in the movement stroke of the cam 20, and two of the second limit travel switches 42 are provided in the movement stroke of the output crank arm 30.

The controller is respectively connected to the two first limit travel switches 41 and the two second limit travel switches 42, and the controller outputs corresponding control signals according to contact motions of the two first limit travel switches 41 and the two second limit travel switches 42.

Specifically, the dual-protection electric operating mechanism further comprises a fixed seat 50, and the fixed seat 50 comprises a bottom plate 51 and a vertical plate 52. The cam 20 is rotatably provided on the upright plate 52, the two first limit switches 41 are provided above the cam 20, and the two second limit switches 42 are provided on the bottom plate 51.

The cam 20 is suitable for being connected with an external motion machine, the motor 10 drives the cam 20 to rotate, and the output crank arm 30 is driven by the cam 20 to synchronously rotate. The first limit travel switch 41 is provided with a swingable contact arm 411, and the contact arm 411 is adapted to hit the edge of the cam 20 within the movement stroke of the cam 20. The second limit travel switch 42 is provided with a contact rod 421, and the contact rod 421 is arranged below the output crank arm 30 and is suitable for colliding with the output crank arm 30 in the movement stroke of the output crank arm 30. Through collision, the contacts of the first limit travel switch 41 and the second limit travel switch 42 are operated, so that the controller outputs corresponding control signals.

The two first limit travel switches 41 provide first limit protection for the movement travel of the cam 20, and the two second limit travel switches 42 provide second limit protection for the movement travel of the cam 20, so that double protection for the electric operating mechanism is realized, and the stability and reliability of the operation of the equipment are improved.

Preferably, two of the first limit switches 41 are disposed symmetrically about the rotational center of the cam 20, and two of the second limit switches 42 are disposed symmetrically about the rotational center of the output crank arm 30.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. Two protection electric operating mechanism, its characterized in that includes:

2. The dual protection electric operating mechanism according to claim 1, wherein the first limit travel switch is provided with a swingable contact arm adapted to hit an edge of the cam, and the second limit travel switch is provided with a contact lever adapted to hit the output crank arm.

3. The dual protection electric operating mechanism according to claim 2, wherein two of the first limit travel switches are disposed symmetrically about a rotational center of the cam, and two of the second limit travel switches are disposed symmetrically about a rotational center of the output crank arm.

4. The dual protection electric operating mechanism according to claim 3, further comprising a fixing base, wherein the fixing base comprises a bottom plate and a vertical plate, the cam is rotatably disposed on the vertical plate, two first limit travel switches are disposed above the cam, two second limit travel switches are disposed on the bottom plate, and the feeler lever is disposed below the output crank arm.