CN210223805U

CN210223805U - Travel switch for elevator

Info

Publication number: CN210223805U
Application number: CN201921279120.4U
Authority: CN
Inventors: Shen Li; 李申; Xiaobin Fan; 范小斌; Jianguo Gu; 顾建国
Original assignee: Haian Shenling Electrical Appliance Manufacturing Co Ltd
Current assignee: Haian Shenling Electrical Appliance Manufacturing Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-03-31
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a travel switch for an elevator, a push rod is arranged outside the inner part of a shell and is provided with a spring A, one end of the spring A is connected with the inner wall of the shell, the other end of the spring A is connected with a baffle, one end of the baffle, which is far away from the push rod, is connected with a contact plate A, two sides of the contact plate A are respectively provided with a contact point A, one end of the shell, which is close to a rubber sleeve, is provided with a separation chamber, a plurality of wiring screws are arranged in the separation chamber, one end of a buffer rod is movably arranged in a round hole opened by the separation chamber, the other end of the buffer rod is arranged inside the shell and is connected with a contact plate B, two sides of the contact plate B, which are far away from the buffer rod, are provided with a contact point B, the buffer rod is arranged outside the inner part of the shell, the service life is greatly prolonged.

Description

Travel switch for elevator

Technical Field

The utility model relates to an elevator travel switch technical field specifically is a travel switch for elevator.

Background

A travel switch and a position switch (also called a limit switch), which are commonly used small-current master control electrical appliances. The contact of the mechanical motion part is operated by the collision to realize the connection or disconnection of the control circuit, thereby achieving a certain control purpose. 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.

At present, the elevator is in the use, and the dog takes place that small displacement is impossible to avoid, and traditional travel switch mostly goes to adapt to this displacement through the deformation of contact piece self to influenced life, consequently, await urgent need an improved technique and solve this problem that exists among the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a travel switch for elevator to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a travel switch for an elevator comprises a shell, a circular ring, a push rod, supports, a rotating shaft, rolling wheels, a baffle, a spring A, a contact plate A, a contact point A, a rubber sleeve, a separation cavity, a wiring screw, a buffer rod, a contact plate B, a contact point B, a spring B and a wire, wherein the circular ring is arranged at one end of the shell, the supports are respectively arranged at one end and two sides of the push rod, the rolling wheels are arranged at one end, away from the push rod, between the two supports through the rotating shaft, the other end of the push rod penetrates through the circular ring and the shell, is arranged in the shell and is connected with the baffle, the spring A is arranged at the outer side of the part, located in the shell, of the push rod, one end of the spring A is connected with the inner wall of the shell, the other end of the spring A is connected, the utility model discloses a buffer device for a motor vehicle, including shell, buffer pole, contact board B, spring B, baffle pole, spring B, baffle plate.

Preferably, the surface of the inner side of the shell close to the side where the circular ring is installed is provided with an annular groove A, the surface of one end of the baffle connecting push rod is provided with an annular groove B, and the two ends of the spring A are respectively arranged in the annular groove A and the annular groove B.

Preferably, the outer side surface of the separation cavity is provided with an annular groove C, the surface of one end, connected with the buffer rod, of the contact plate B is provided with an annular groove D, and two ends of the spring B are arranged in the annular groove C and the annular groove D respectively.

Preferably, the buffer beam includes the body of rod A, the body of rod B and limiting plate, body of rod A one end links to each other with body of rod B one end, the body of rod B other end links to each other with contact plate B, the body of rod A other end sets up in separating the intracavity and links to each other with the limiting plate, the passageway has all been opened to body of rod A, the body of rod B and limiting plate inside, the wire sets up in the passageway.

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

(1) the buffer structure has good buffer performance, avoids damage caused by hard tops of the contact plate A and the contact plate B, and greatly prolongs the service life.

(2) After the elevator stop block leaves, the contact plate A and the contact plate B can automatically reset under the action of the spring A and the spring B.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a buffer rod structure.

In the figure: the device comprises a shell 1, a circular ring 2, a push rod 3, a support 4, a rotating shaft 5, a roller 6, a baffle 7, a spring A8, a contact plate A9, a contact point A10, a rubber sleeve 11, a separation cavity 12, a binding screw 13, a buffer rod 14, a contact plate B15, a contact point B16, a spring B17, a lead wire 18, an annular groove A19, an annular groove B20, an annular groove C21, an annular groove D22, a rod body A141, a rod body B142 and a limit plate 143.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a travel switch for an elevator comprises a shell 1, a circular ring 2, a push rod 3, supports 4, a rotating shaft 5, idler wheels 6, a baffle 7, a spring A8, a contact plate A9, a contact point A10, a rubber sleeve 11, a separation cavity 12, a wiring screw 13, a buffer rod 14, a contact plate B15, a contact point B16, a spring B17 and a lead 18, wherein the circular ring 2 is arranged at one end of the shell 1, the supports 4 are respectively arranged at one end and two sides of the push rod 3, the idler wheels 6 are arranged between the two supports 4 at the end far away from the push rod 3 through the rotating shaft 5, the other end of the push rod 3 penetrates through the circular ring 2 and the shell 1 and is arranged in the shell 1 and connected with the baffle 7, a spring A8 is arranged outside the inner part of the shell 1 of the push rod 3, one end of the spring A3874 is connected with the inner wall of the shell 1, the other end of the spring A5 is connected, casing 1 is kept away from push rod 3 one end and is provided with rubber sleeve 11, casing 1 inside near being provided with apart the chamber 12 from rubber sleeve 11 one end, be provided with a plurality of binding screws 13 in separating the chamber 12, it has the round hole to separate chamber 12 near being opened from push rod 3 one end, buffer rod 14 one end activity sets up in separating the round hole that chamber 12 opened, the buffer rod 14 other end sets up inside casing 1 and links to each other with contact plate B15, contact plate B15 is kept away from buffer rod 14 one end both sides and is provided with contact point B16, the position of contact point B16 corresponds each other with the position of contact point A10, buffer rod 14 is located the inside partial outside of casing 1 and is provided with spring B17, spring B17 one end links to each other with contact plate B15, the spring B17 other end links to each other with the chamber 12 external surface, buffer rod 14 is inside to be provided.

The inside surface of one side of the inside nearly installation ring 2 of shell 1 is opened has ring channel A19, baffle 7 is connected push rod 3 terminal surface and is opened has ring channel B20, spring A8 both ends set up respectively in ring channel A19 and ring channel B20, avoid spring A8 to drop, it has ring channel C21 to separate chamber 12 outside surface, contact plate B15 is connected 14 terminal surface of buffer pole and is opened and is had ring channel D22, spring B17 both ends set up respectively in ring channel C21 and ring channel D22, avoid spring B17 to drop.

As shown in fig. 2, the buffer rod 14 includes a rod body a141, a rod body B142 and a limit plate 143, one end of the rod body a141 is connected to one end of the rod body B142, the other end of the rod body B142 is connected to the contact plate B15, the other end of the rod body a141 is disposed in the compartment 12 and is connected to the limit plate 143, channels are formed inside the rod body a141, the rod body B142 and the limit plate 143, and the wires 18 are disposed in the channels.

The use principle is as follows: when the roller 6 contacts the elevator stop dog, the push rod 3 is compressed towards the inside of the shell 1 until the contact point A10 and the contact point B16 contact, the purpose of communicating a circuit is achieved, the elevator is used for a long time, the distance of the elevator stop dog is slightly changed, if the distance is too close to a travel switch, when the contact point A10 and the contact point B16 contact, the telescopic rod can displace into the separation chamber 12, the separation chamber 12 provides a space for the telescopic rod to displace, damage caused by hard jacking of the contact plate A9 and the contact plate B15 is avoided, after the elevator stop dog leaves, through the action of the spring A8 and the spring B17, the contact plate A9 and the contact plate B15 can both automatically reset.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A travel switch for an elevator is characterized in that: comprises a shell (1), a circular ring (2), a push rod (3), supports (4), a rotating shaft (5), rollers (6), a baffle (7), a spring A (8), a contact plate A (9), a contact point A (10), a rubber sleeve (11), a separation cavity (12), a wiring screw (13), a buffer rod (14), a contact plate B (15), a contact point B (16), a spring B (17) and a lead (18), wherein the circular ring (2) is arranged at one end of the shell (1), the supports (4) are respectively arranged at one end and two sides of the push rod (3), the roller (6) is arranged between the two supports (4) at one end far away from the push rod (3) through the rotating shaft (5), the other end of the push rod (3) penetrates through the circular ring (2) and the shell (1) to be arranged in the shell (1) and is connected with the baffle (7), and the spring A (8) is arranged at the outer side, one end of the spring A (8) is connected with the inner wall of the shell (1), the other end of the spring A (8) is connected with the baffle (7), one end of the baffle (7), far away from the push rod (3), is connected with the contact plate A (9), contact points A (10) are respectively arranged on two sides of the contact plate A (9), one end of the shell (1), far away from the push rod (3), is provided with a rubber sleeve (11), one end of the shell (1), close to the rubber sleeve (11), is provided with a separation cavity (12), a plurality of wiring screws (13) are arranged in the separation cavity (12), one end of the separation cavity (12), close to the push rod (3), is provided with a round hole, one end of the buffer rod (14) is movably arranged in the round hole opened by the separation cavity (12), the other end of the buffer rod (14) is arranged in the shell (1) and is connected with the contact plate B (15), one end of the contact plate B (, the position of contact point B (16) and the position of contact point A (10) correspond to each other, buffer beam (14) are located shell (1) inside part outside and are provided with spring B (17), spring B (17) one end links to each other with contact board B (15), spring B (17) other end links to each other with dividing chamber (12) external surface, buffer beam (14) inside is provided with wire (18), wire (18) one end links to each other with contact board B (15), the wire (18) other end links to each other with binding screw (13).

2. The travel switch for an elevator according to claim 1, wherein: the inner side surface of one side of the shell (1), close to the installation ring (2), is provided with an annular groove A (19), the baffle (7) is connected with one end surface of the push rod (3) and is provided with an annular groove B (20), and two ends of the spring A (8) are respectively arranged in the annular groove A (19) and the annular groove B (20).

3. The travel switch for an elevator according to claim 1, wherein: the outer side surface of the separation cavity (12) is provided with an annular groove C (21), one end surface of the contact plate B (15) connected with the buffer rod (14) is provided with an annular groove D (22), and two ends of the spring B (17) are respectively arranged in the annular groove C (21) and the annular groove D (22).

4. The travel switch for an elevator according to claim 1, wherein: buffer beam (14) are including the body of rod A (141), the body of rod B (142) and limiting plate (143), body of rod A (141) one end links to each other with body of rod B (142) one end, the body of rod B (142) other end links to each other with contact plate B (15), the body of rod A (141) other end sets up in dividing a chamber (12) and links to each other with limiting plate (143), the inside passageway that has all opened of body of rod A (141), body of rod B (142) and limiting plate (143), wire (18) set up in the passageway.