CN211769578U - Adjustable elevator limit switch - Google Patents

Abstract

The utility model discloses an adjustable elevator limit switch, comprising an outer shell, the interior of the outer shell is a cavity structure, a push plate is installed in the inner cavity of the outer shell, two bolt holes are opened on the push plate, an adjusting screw is installed in the bolt hole, one end of the adjusting screw passes through the bolt hole to the bottom of the push plate, the other end of the adjusting screw is connected with an adjusting nut arranged above the push plate, a mounting plate is installed under the outer shell, the bottom of the mounting plate is connected with a mounting column through three groups of reset springs, and a rubber roller is fixedly installed under the mounting column. The utility model has a novel structural design, can adjust the switch limit distance, has a rapid limit response, and ensures the safety of elevator travel.

Description

An adjustable elevator limit switch

technical field

The utility model relates to the technical field of elevator limit switches, in particular to an adjustable elevator limit switch.

Background technique

Limit switches are widely used in the elevator industry to control the upper and lower end points of the elevator travel in the elevator shaft. The existing elevator limit switches have a single structure, are inconvenient to adjust, and have low limit accuracy. Therefore, it is necessary to improve.

Utility model content

The purpose of the present invention is to provide an adjustable elevator limit switch to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an adjustable elevator limit switch, comprising an outer casing, the interior of the outer casing is a cavity structure, and a pushing plate is installed in the inner cavity of the outer casing, and the pushing There are two bolt holes on the plate, an adjustment screw is installed in the bolt hole, one end of the adjustment screw passes through the bolt hole to the bottom of the push plate, and the other end of the adjustment screw is connected with the adjustment nut set above the push plate A mounting plate is installed under the outer casing, the mounting posts are connected to the lower part of the mounting plate through three sets of return springs, and the rubber rollers are fixedly installed under the mounting posts.

Preferably, a column and a beam are installed in the inner cavity of the casing, the column is vertically installed in the middle of the push plate, the beam is vertically installed on the upper end of the column, a lower contact is installed above the outer end of the beam, and the casing A crossbar is installed above the outside of the body, an upper contact is installed below one end of the crossbar, and the upper contact and the lower contact are symmetrically arranged, and a connecting rod is installed vertically on the other side of the crossbar, so the An electromagnet is installed below the connecting rod, and the electromagnet is installed just above the brake switch.

Preferably, a connecting column is vertically installed on the upper surface of the mounting plate, and the connecting column corresponds to the position of the adjusting screw.

Preferably, the return spring includes a spring body, the spring body includes an upper mounting sheet, a lower mounting sheet and a spring body, an upper positioning post is mounted on the inner side of the upper mounting sheet, and an upper positioning post is mounted on the inner side of the lower mounting sheet The lower positioning column is symmetrically arranged, the spring body is installed between the upper mounting piece and the lower mounting piece, and the spring body is sleeved on the outside of the upper positioning column and the lower positioning column.

Preferably, the distance between the upper contact and the lower contact is 5mm-6mm.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model has a novel structure design, can adjust the limit distance of the switch, and respond quickly to the limit, which ensures the safety of the elevator.

(2) In the present utility model, two bolt holes are opened on the push plate, and an adjustment screw is installed in the bolt hole. Nut connection, with this structure, the distance between the connecting column and the mounting plate can be adjusted artificially, and then the limit distance of the elevator can be adjusted.

(3) The reset spring adopted by the utility model has good elasticity and fast reset speed, which further improves the limit accuracy.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic diagram of the structure of the return spring of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation is therefore not to be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "provided with", "connected", etc., should be understood in a broad sense, for example, "connected" may be a fixed The connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-2, the present invention provides a technical solution: an adjustable elevator limit switch, comprising an outer casing 1, the inner of the outer casing 1 is a cavity structure, and the inner cavity of the outer casing 1 is installed There is a push plate 2, two bolt holes are opened on the push plate 2, an adjustment screw 3 is installed in the bolt holes, one end of the adjustment screw 3 passes through the bolt hole to the bottom of the push plate 2, and the adjustment screw 3 The other end is connected with the adjusting nut 4 arranged above the push plate 2. With this structure, the distance between the connecting column and the mounting plate can be adjusted artificially, thereby adjusting the limit distance of the elevator. A mounting plate 5 is installed under the outer casing 1 . The mounting plate 5 is connected to a mounting post 7 through three sets of return springs 6 , and a rubber roller 8 is fixedly installed under the mounting post 7 .

In the present invention, a column 9 and a beam 10 are installed in the inner cavity of the outer casing 1. The column 9 is vertically installed in the middle of the push plate 2, and the beam 10 is vertically installed on the upper end of the column 9, above the outer end of the beam 10. A lower contact 11 is installed, a crossbar 12 is installed above the outer casing 1, an upper contact 13 is installed below one end of one side of the crossbar 12, and the upper contact 13 is symmetrical with the lower contact 11 Setting, the distance between the upper contact 13 and the lower contact 11 is 5mm-6mm. A connecting rod 14 is installed vertically on the other side of the cross bar 12, an electromagnet 15 is installed below the connecting rod 14, and the electromagnet 15 is installed directly above the brake switch 16; Post 17, and the connecting post 17 corresponds to the position of the adjusting screw 3.

In addition, in the present invention, the return spring 6 includes a spring body 18, the spring body 18 includes an upper mounting piece 19, a lower mounting piece 20 and a spring body 21, and an upper positioning post 22 is mounted on the inner side of the upper mounting piece 19, so A lower positioning column 23 symmetrically arranged with the upper positioning column 22 is installed on the inner side of the lower mounting piece 20, the spring body 21 is installed between the upper mounting piece 19 and the lower mounting piece 20, and the spring body 21 is sleeved on the upper positioning piece The column 22 and the lower positioning column 23 are outside. The reset spring adopted by the utility model has good elasticity and high reset speed, which further improves the limit accuracy.

Working principle: When the elevator reaches the position when running, the elevator car touches the rubber roller, the rubber roller pushes the mounting column to move upward, the mounting column drives the return spring to push the mounting plate to move upward, and the connecting column on the mounting plate moves upward and contacts one end of the adjusting screw. , push the push plate to move up, push the plate to drive the column and push the installation beam to move, after the lower contact on the installation beam touches the upper contact, one end of the beam on the upper contact is lifted, the other end is pressed down, the connecting rod The electromagnet on the brake is absorbed by the brake switch for braking.

To sum up, the utility model has a novel structure design, can adjust the limit distance of the switch, and respond quickly to the limit, which ensures the safety of the elevator.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (5)

1. An adjustable elevator limit switch, includes shell body (1), its characterized in that: the improved rubber roller is characterized in that the outer shell (1) is internally provided with a cavity structure, a pushing plate (2) is installed in an inner cavity of the outer shell (1), two bolt holes are formed in the pushing plate (2), adjusting screws (3) are installed in the bolt holes, one ends of the adjusting screws (3) penetrate through the bolt holes to the lower portion of the pushing plate (2), the other ends of the adjusting screws (3) are connected with adjusting nuts (4) arranged above the pushing plate (2), a mounting plate (5) is installed below the outer shell (1), mounting columns (7) are connected below the mounting plate (5) through three reset springs (6), and rubber rollers (8) are fixedly installed below the mounting columns (7).

2. An adjustable elevator limit switch as defined in claim 1, wherein: stand (9) and crossbeam (10) are installed to shell body (1) inner chamber, install at catch plate (2) middle part perpendicularly stand (9), crossbeam (10) are installed perpendicularly at stand (9) upper end, contact (11) are installed down to crossbeam (10) outer tip top, horizontal pole (12) are installed to shell body (1) outside top, contact (13) are installed to horizontal pole (12) one side end below, just go up contact (13) and contact (11) symmetry setting down, connecting rod (14) are installed perpendicularly to horizontal pole (12) opposite side, electro-magnet (15) are installed to connecting rod (14) below, install directly over brake switch (16) electro-magnet (15).

3. An adjustable elevator limit switch as defined in claim 1, wherein: the mounting panel (5) up end installs spliced pole (17) perpendicularly, just spliced pole (17) and adjusting screw (3) position are corresponding.

4. An adjustable elevator limit switch as defined in claim 1, wherein: reset spring (6) include spring body (18), spring body (18) are including last installation piece (19), lower installation piece (20) and spring body (21), go up installation piece (19) inboard and install reference column (22), install down lower reference column (23) that set up with last reference column (22) symmetry down installation piece (20) inboard, spring body (21) are installed at last installation piece (19) and are installed between piece (20) down, just spring body (21) cover is outside at last reference column (22), lower reference column (23).

5. An adjustable elevator limit switch according to claim 2, wherein: the distance between the upper contact (13) and the lower contact (11) is 5mm-6 mm.

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