CN216785383U

CN216785383U - Electronic safety tongs

Info

Publication number: CN216785383U
Application number: CN202220463094.6U
Authority: CN
Inventors: 戚伟军; 罗兴仁
Original assignee: Shanghai Changyi Mechanical And Electrical Science Co ltd
Current assignee: Shanghai Changyi Mechanical And Electrical Science Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-06-21
Anticipated expiration: 2032-03-03

Abstract

The utility model relates to an electronic safety gear. The utility model comprises the following steps: the electromagnet is arranged on the mounting base plate, a cavity is arranged in the electromagnet, and an elastic connecting piece, a static iron core and a coil arranged on the static iron core are arranged in the cavity; the connecting rod mechanism is arranged on the mounting seat and comprises a driving rod, the driving rod penetrates through the cavity, a movable iron core is arranged on the driving rod, the elastic connecting piece is respectively abutted against the movable iron core and the static iron core, and the movable iron core and the static iron core are oppositely arranged; and the swinging piece is driven by the link mechanism to swing and enable the roller to move along the clamp body. The utility model utilizes the electromagnet with a special structure and the connecting rod mechanism, can change the working direction of the spring from horizontal to longitudinal installation by changing the direction of the trigger spring, achieves the effect of miniaturization, reduces the volume, saves the installation space, can be applied to all shaft schemes, enlarges the application field, and is convenient to install and adjust.

Description

Electronic safety tongs

Technical Field

The utility model relates to the technical field of elevator electronic safety tongs, in particular to an electronic safety tong.

Background

Elevator safety tongs are used to arrest or within permitted limits the elevator car by means of friction bodies acting on the guide rails when the elevator is overspeed, e.g. at high speeds in the event of a failure of the control, failure of the drive or braking device or breakage of the traction cable.

The existing electronic safety tongs have the following problems: firstly, most of trigger springs are externally arranged common compression springs, and the initial height of the springs cannot be reduced under the requirements of spring pressure and stroke; the installation direction of the electromagnet needs to be consistent with the direction of the trigger spring; thirdly, the travel switch is installed transversely in a standard installation mode. The body structure of the electronic safety gear is large, the width of the electronic safety gear requires a large installation space, the application of the electronic safety gear is limited due to limited well space during installation of a small well, and the vertical beam needs to be modified in a standard well, so that the difficulty in installation and adjustment is brought.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the electronic safety gear which can change the triggering direction of the working spring, has small volume and is easy to install.

The utility model provides an electronic safety tongs, comprising a tongs body, a mounting bottom plate and a mounting seat, wherein the mounting bottom plate and the mounting seat are respectively arranged above and below the tongs body, the tongs body is provided with a roller, and the electronic safety tongs also comprise:

the electromagnet is arranged on the mounting base plate and comprises a shell, a cavity is arranged in the shell, and an elastic connecting piece, a static iron core and a coil arranged on the static iron core are arranged in the cavity;

the connecting rod mechanism is arranged on the mounting seat and comprises a driving rod, the driving rod penetrates through the cavity, a movable iron core is arranged on the driving rod, the elastic connecting piece is respectively abutted against the movable iron core and the static iron core, and the movable iron core and the static iron core are oppositely arranged;

the swinging piece is driven by the connecting rod mechanism to enable the driving rod to move linearly up and down to swing and enable the roller to move along the clamp body;

when the elevator car is in a braking state, the movable iron core is tightly propped against the upper end of the electromagnet cavity through the elastic acting force of the elastic connecting piece, at the moment, the oscillating piece enables the roller to be extruded with a guide rail of the elevator car, and the elevator car is in a safe braking state through friction force; when the lift car normally operates, the coil is electrified, the electromagnet attracts the movable iron core to move downwards, meanwhile, the driving rod moves downwards, and the roller is separated from the guide rail through the swinging of the swinging piece.

In an embodiment of the utility model, the link mechanism further includes a connecting rod, the mounting seat is provided with a vertically arranged guide groove, one end of the connecting rod is connected to the guide groove through a fixed pin, the other end of the connecting rod is rotatably connected with one end of the swinging member, and the other end of the swinging member is rotatably connected with the caliper body.

In one embodiment of the present invention, the swinging member has an elongated slot, the caliper body has an inner slot, the roller is slidably connected to the elongated slot through a connecting post, and the roller rolls along one end surface of the inner slot while the connecting post slides along the elongated slot.

In one embodiment of the present invention, the elongated slot is configured to: the roller is extruded or separated from the guide rail by the connecting column of the roller sliding along the elongated slot.

In an embodiment of the present invention, the long groove includes a first straight groove and a second straight groove, and the first straight groove and the second straight groove are disposed at an angle.

In an embodiment of the present invention, an included angle between the first straight groove and the second straight groove is an obtuse angle.

In one embodiment of the utility model, the oscillating piece is of a thin plate-like structure.

In one embodiment of the utility model, the elastic connection is a helical spring.

In an embodiment of the present invention, the movable iron core and the stationary iron core each include a groove, the helical spring is sleeved on the driving rod, and two ends of the helical spring respectively abut against the respective grooves of the movable iron core and the stationary iron core.

In one embodiment of the utility model, the mounting base plate is further provided with a travel switch for detecting the moving position of the driving rod.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the electronic safety tongs, by utilizing the electromagnet with a special structure and utilizing the link mechanism, the working direction of the spring can be changed from the transverse direction to the longitudinal direction by changing the direction of the trigger spring, so that the electronic safety tongs achieve the effect of miniaturization, reduce the volume, save the installation space, can be applied to all shaft schemes, expand the application field and are convenient to install and adjust.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic view of the overall structure of the electronic safety gear of the present invention.

The specification reference numbers indicate: 1. a clamp body; 2. mounting a bottom plate; 3. a mounting seat; 31. a guide groove; 4. a roller; 41. connecting columns; 5. an electromagnet; 51. an elastic connecting member; 52. a stationary core; 53. a coil; 54. a movable iron core; 55. a groove; 56. a housing; 6. a link mechanism; 61. a drive rod; 62. a connecting rod; 63. a fixing pin; 7. a swinging member; 71. a long groove; 72. a first straight groove; 73. a second straight groove; 8. a travel switch.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1, the electronic safety tongs of the present invention comprises a tongs body 1, and a mounting base plate 2 and a mounting base 3 respectively disposed above and below the tongs body 1, wherein the tongs body 1 is provided with a roller 4, and the electronic safety tongs further comprise:

the electromagnet 5 is arranged on the installation base plate 2, the electromagnet 5 comprises a shell 56, a cavity is arranged in the shell 56, and the cavity is internally provided with an elastic connecting piece 51, a static iron core 52 and a coil 53 arranged on the static iron core 52;

the link mechanism 6 is mounted on the mounting seat 3, the link mechanism 6 includes a driving rod 61, the driving rod 61 penetrates through the cavity, a movable iron core 54 is arranged on the driving rod 61, the elastic connecting piece 51 is respectively abutted against the movable iron core 54 and the static iron core 52, and the movable iron core 54 is arranged opposite to the static iron core 52;

a swinging member 7 which swings by driving the driving lever 61 to move linearly up and down by the link mechanism 6 and moves the roller 4 along the caliper body 1;

when the elevator car is in a braking state, the movable iron core 54 is tightly pressed against the upper end of the electromagnet cavity through the elastic acting force of the elastic connecting piece 51, at the moment, the oscillating piece 7 enables the roller 4 to be extruded with a guide rail of the elevator car, and the elevator car is in a safe braking state through friction force; when the cage is normally operated, the coil 53 is energized, the electromagnet 5 attracts the movable iron core 54 to move downward, and at the same time, the driving rod 61 moves downward, and the swinging piece 7 swings to separate the roller 4 from the guide rail.

Specifically, link mechanism 6 still includes connecting rod 62, mount pad 3 is equipped with the guide way 31 of vertical setting, connecting rod 62 one end is rotated through fixed pin 63 and is connected in actuating lever 61 one end, fixed pin 63 is located the guide way 31 to can be in the guide way 31 up-and-down motion, the connecting rod 62 other end is rotated with oscillating piece 7 one end and is connected, the oscillating piece 7 other end rotates with the pincers body 1 and is connected.

More specifically, the swinging piece 7 is provided with a long groove 71, an inner groove is arranged in the caliper body 1, the roller 4 is connected with the long groove 71 in a sliding way through a connecting column 41, and the roller 4 rolls along one end face of the inner groove while the connecting column slides along the long groove 71; the long slot 71 is configured to: the roller 4 is pressed or separated from the guide rail by the coupling post 41 of the roller 4 sliding along the elongated slot 71.

More specifically, the long groove 71 includes a first straight groove 72 and a second straight groove 73, and the first straight groove 72 and the second straight groove 73 are disposed at an angle. In this embodiment, the included angle between the first straight groove 72 and the second straight groove 73 is an obtuse angle.

Specifically, the swinging member 7 is a thin plate-like structure, and the elastic connection member 51 is a coil spring.

Specifically, the movable iron core 54 and the stationary iron core both include a groove 55, the driving rod 61 is sleeved with the coil spring, and both ends of the coil spring respectively abut against the respective grooves 55 of the movable iron core 54 and the stationary iron core.

Specifically, the mounting baseplate 2 is further provided with a stroke switch 8 for detecting the moving position of the drive rod 61.

The working principle of the utility model is as follows: under the power-off state of the coil 53, the elastic force is provided by a spiral spring in the electromagnet 5, the spring force is applied to the swinging piece 7 through the connecting rod mechanism 6, the roller 4 is extruded with the guide rail through the inner groove of the clamp body 1, and the elevator car is in a safe braking state through the friction force; the coil 53 is electrified, the swinging piece 7 is driven by the link mechanism 6 and is in a releasing state, and the elevator is in a normal running state. The utility model utilizes the working principle of combining the special electromagnet 5 with the connecting rod mechanism 6, not only can meet the standard of power-off braking, but also can meet the width requirement of a small vertical beam, is convenient to install and saves the space of a well.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides an electron safety tongs, includes the pincers body (1) and locates mounting plate (2), mount pad (3) of pincers body (1) top and below respectively, be equipped with roller (4) on the pincers body (1), its characterized in that still includes:

the electromagnet (5) is arranged on the mounting base plate (2), the electromagnet (5) comprises a shell (56), a cavity is arranged in the shell (56), and an elastic connecting piece (51), a static iron core (52) and a coil (53) arranged on the static iron core (52) are arranged in the cavity;

the connecting rod mechanism (6) is mounted on the mounting seat (3), the connecting rod mechanism (6) comprises a driving rod (61), the driving rod (61) penetrates through the cavity, a movable iron core (54) is arranged on the driving rod (61), the elastic connecting piece (51) is respectively abutted against the movable iron core (54) and the static iron core (52), and the movable iron core (54) and the static iron core (52) are oppositely arranged;

a swinging piece (7) which is driven by a connecting rod mechanism (6) to enable the driving rod (61) to do vertical linear motion to swing and enable the roller (4) to move along the clamp body (1);

when the elevator car is in a braking state, the movable iron core (54) is tightly propped against the upper end of the electromagnet cavity through the elastic acting force of the elastic connecting piece (51), at the moment, the swinging piece (7) enables the roller (4) to be extruded with a guide rail of the elevator car, and the elevator car is in a safe braking state through friction force; when the cage is in a normal running state, the coil (53) is electrified, the electromagnet (5) attracts the movable iron core (54) to move downwards, meanwhile, the driving rod (61) moves downwards, and the swinging piece (7) swings to separate the roller (4) from the guide rail.

2. The electronic safety gear according to claim 1, wherein the link mechanism (6) further comprises a link rod (62), the mounting seat (3) is provided with a vertically arranged guide groove (31), one end of the link rod (62) is rotatably connected to one end of the driving rod (61) through a fixing pin (63), the fixing pin (63) is located in the guide groove (31), the other end of the link rod (62) is rotatably connected to one end of the swinging member (7), and the other end of the swinging member (7) is rotatably connected to the gear body (1).

3. An electronic safety gear according to claim 1, characterized in that the swinging member (7) is provided with an elongated slot (71), the gear body (1) is provided with an inner slot, the roller (4) is slidably connected to the elongated slot (71) through a connecting rod (41), and the roller (4) rolls along one end surface of the inner slot while the connecting rod (41) slides along the elongated slot (71).

4. An electronic safety gear according to claim 3, wherein the elongated slot (71) is configured to: the roller (4) is extruded or separated from the guide rail by the connecting column of the roller (4) sliding along the long groove (71).

5. An electronic safety gear according to claim 4, wherein the elongated slot (71) comprises a first straight slot (72) and a second straight slot (73), and the first straight slot (72) and the second straight slot (73) are arranged in an angle.

6. An electronic safety gear according to claim 5, characterized in that the included angle of the first straight groove (72) and the second straight groove (73) is an obtuse angle.

7. An electric safety gear according to any one of claims 1-6, characterized in that the oscillating piece (7) is of a sheet-like construction.

8. An electronic safety gear according to claim 1, characterized in that the resilient connecting element (51) is a helical spring.

9. The electronic safety gear according to claim 8, wherein the movable iron core (54) and the stationary iron core each include a groove (55), the coil spring is sleeved on the driving rod (61), and two ends of the coil spring respectively abut against the respective grooves (55) of the movable iron core (54) and the stationary iron core.

10. An electronic safety gear according to claim 1, characterized in that the mounting base plate (2) is further provided with a travel switch (8) for detecting the displacement position of the drive rod (61).