CN219031414U

CN219031414U - Improved generation elevator safety tongs

Info

Publication number: CN219031414U
Application number: CN202223099680.6U
Authority: CN
Inventors: 徐东升; 邹智; 江天; 肖天
Original assignee: Lotte Elevator Parts Zhejiang Co ltd
Current assignee: Lotte Elevator Parts Zhejiang Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-16
Anticipated expiration: 2032-11-22

Abstract

The utility model provides an improved elevator safety tongs, which belongs to the field of elevator accessories and comprises a tongs seat, a floating plate, a brake wheel and an electromagnet; the clamp seat is provided with a jaw used for clamping the car guide rail, the floating plate is hinged to one surface of the clamp seat corresponding to the jaw, and the electromagnet is fixedly arranged at one end position of the clamp seat corresponding to the floating plate and used for being electrified to push the floating plate to swing; the brake wheel is movably arranged on the floating plate, is positioned at the inner side of the jaw and swings along with the floating plate to contact with the car guide rail; and a trigger switch is fixedly arranged on one side of the clamp seat. According to the improved elevator safety tongs, the trigger switch is arranged, the connecting rod is used for connecting the brake wheel with the rotary contact of the trigger switch, and the connecting rod is driven to rotate when the brake wheel moves, so that the trigger switch is triggered, whether the brake wheel acts or not is verified, and the safety and convenience in use are achieved.

Description

Improved generation elevator safety tongs

Technical Field

The utility model belongs to the technical field of elevator accessories, and particularly relates to an improved elevator safety tongs.

Background

The safety gear device for elevator is a safety device for emergency stopping and clamping of the car on the guide rail when the elevator speed exceeds the limit speed set by the elevator speed limiter under the operation of the speed limiter or when the suspension rope breaks and slacks. It provides an effective protection for the safe operation of the elevator, which is generally mounted on the car frame or counterweight frame.

The Chinese patent publication No. CN212832237U discloses an electrically triggered safety tongs, which can trigger a floating plate to drive a brake wheel to contact with a car guide rail rapidly to realize braking, but can hardly verify whether the brake wheel acts or not, and when braking or releasing, if the brake wheel does not act, the brake wheel is difficult to ensure successful braking or releasing, and the electrically triggered safety tongs are very inconvenient to use.

Disclosure of Invention

The embodiment of the utility model provides an improved elevator safety tongs, which aims to solve the problems in the background technology.

The embodiment of the utility model is realized in such a way that the improved elevator safety tongs comprise a tongs seat, a floating plate, a brake wheel and an electromagnet; the clamp seat is provided with a jaw used for clamping the car guide rail, the floating plate is hinged to one surface of the clamp seat corresponding to the jaw, and the electromagnet is fixedly arranged at one end position of the clamp seat corresponding to the floating plate and used for being electrified to push the floating plate to swing; the brake wheel is movably arranged on the floating plate, is positioned at the inner side of the jaw and swings along with the floating plate to contact with the car guide rail; one side of the clamp seat is fixedly provided with a trigger switch, the end part of the brake wheel is provided with a connecting shaft, and a connecting rod which moves and rotates along with the brake wheel is arranged between the connecting shaft and a rotating contact of the trigger switch.

Preferably, a long waist hole for moving the connecting shaft is formed in the floating plate at a position corresponding to the connecting shaft.

Preferably, a pin shaft is arranged on the clamp seat, and the floating plate is rotatably arranged on the pin shaft.

Preferably, a supporting plate for supporting the electromagnet is fixedly arranged on the clamp seat;

one end of the floating plate, which is far away from the pin shaft, is provided with a connecting sheet which is integrally formed with the floating plate, and the connecting sheet is perpendicular to the floating plate and fixedly connected with the output end of the electromagnet.

Preferably, a hinge piece integrally formed with the floating plate is arranged on one side, far away from the brake wheel, of the floating plate, the hinge piece is perpendicular to the floating plate, and one end, far away from the floating plate, of the hinge piece is close to the clamp seat;

the position of the clamp seat corresponding to the hinge plate is provided with a supporting rod which transversely penetrates through the hinge plate and is fixedly connected with the clamp seat, and the hinge plate is in sliding connection with the supporting rod;

the support rod is sleeved with a trigger spring, and two ends of the trigger spring are fixedly connected with one end of the support rod, which is far away from the clamp seat, and one surface of the hinge plate, which is far away from the clamp seat.

According to the improved elevator safety tongs, the trigger switch is arranged, the brake wheel is connected with the rotary contact of the trigger switch through the connecting rod, and when the brake wheel moves, the connecting rod is driven to rotate, so that the trigger switch is triggered, whether the brake wheel acts or not is verified, and the safety and convenience in use are achieved.

Drawings

Fig. 1 is a schematic diagram of the structure of an improved elevator safety gear.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides an improved elevator safety gear, which is shown in fig. 1, and comprises a gear seat 1, a floating plate 3, a brake wheel 5 and an electromagnet 6; the clamp seat 1 is provided with a jaw 2 used for clamping on a car guide rail, the floating plate 3 is hinged to one surface of the clamp seat 1 corresponding to the jaw 2, and the electromagnet 6 is fixedly arranged at one end position of the clamp seat 1 corresponding to the floating plate 3 and used for energizing to push the floating plate 3 to swing; the brake wheel 5 is movably arranged on the floating plate 3, and the brake wheel 5 is positioned at the inner side of the jaw 2 and swings along with the floating plate 3 to contact with the car guide rail; a trigger switch 8 is fixedly arranged on one side of the clamp seat 1, a connecting shaft 7 is arranged at the end part of the brake wheel 5, and a connecting rod 9 which moves and rotates along with the brake wheel 5 is arranged between the connecting shaft 7 and a rotating contact of the trigger switch 8.

The clamp seat 1 is provided with a pin shaft 12, and the floating plate 3 is rotatably arranged on the pin shaft 12. The floating plate 3 is provided with a long waist hole 4 corresponding to the connecting shaft 7 and used for moving the connecting shaft 7. A supporting plate 11 for supporting the electromagnet 6 is fixedly arranged on the clamp seat 1; the end of the floating plate 3, which is far away from the pin shaft 12, is provided with a connecting sheet 10 integrally formed with the floating plate 3, and the connecting sheet 10 is perpendicular to the floating plate 3 and fixedly connected with the output end of the electromagnet 6. One side of the floating plate 3, which is far away from the brake wheel 5, is provided with a hinge piece 13 integrally formed with the floating plate 3, the hinge piece 13 is perpendicular to the floating plate 3, and one end of the hinge piece 13, which is far away from the floating plate 3, is close to the clamp seat 1; a supporting rod 14 which transversely penetrates through the hinge piece 13 and is fixedly connected with the clamp seat 1 is arranged at the position, corresponding to the hinge piece 13, of the clamp seat 1, and the hinge piece 13 is in sliding connection with the supporting rod 14; the supporting rod 14 is sleeved with a trigger spring 15, and two ends of the trigger spring 15 are fixedly connected with one end of the supporting rod 14 away from the clamp seat 1 and one surface of the hinge piece 13 away from the clamp seat 1 respectively.

When the car or the counterweight runs continuously, the braking force is gradually increased under the contact friction between the braking wheel 5 and the car guide rail, so that the purposes of deceleration and braking are achieved; when the brake is stopped, the brake wheel 5 moves in the long waist hole 4 on the floating plate 3, so that the connecting rod 9 is driven to rotate on the rotary contact of the trigger switch 8, and when the connecting rod 9 drives the rotary contact to rotate to a certain angle, the trigger switch 8 is triggered, and the brake state monitoring of the brake wheel 5 is realized.

When the elevator is operated, the electromagnet 6 is electrified, the connecting sheet 10 is pulled under the action of the electromagnet 6, so that the floating plate 3 drives the brake wheel 5 to be far away from the car guide rail, the car guide rail is separated from the brake wheel 5, and meanwhile, the hinge piece 13 is driven to push the trigger spring 15, so that the trigger spring 15 is compressed, and braking is restored; at this time, the brake wheel 5 moves in the long waist hole 4 on the floating plate 3, so as to drive the connecting rod 9 to rotate at the rotary contact of the trigger switch 8, and when the connecting rod 9 drives the rotary contact to rotate to a certain angle, the trigger switch 8 triggers, thereby realizing the recovery state monitoring of the brake wheel 5.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. An improved elevator safety tongs comprises a tongs seat (1), a floating plate (3), a brake wheel (5) and an electromagnet (6); the clamp seat (1) is provided with a jaw (2) for clamping on a car guide rail, the floating plate (3) is hinged to one surface of the clamp seat (1) corresponding to the jaw (2), and the electromagnet (6) is fixedly arranged at one end position of the clamp seat (1) corresponding to the floating plate (3) and is used for energizing to push the floating plate (3) to swing; the brake wheel (5) is movably arranged on the floating plate (3), and the brake wheel (5) is positioned at the inner side of the jaw (2) and swings along with the floating plate (3) to be contacted with the car guide rail; the novel wrench is characterized in that a trigger switch (8) is fixedly arranged on one side of the wrench seat (1), a connecting shaft (7) is arranged at the end part of the brake wheel (5), and a connecting rod (9) which moves and rotates along with the brake wheel (5) is arranged between the connecting shaft (7) and a rotating contact of the trigger switch (8).

2. An improved elevator safety gear according to claim 1, characterized in that the floating plate (3) is provided with a long waist hole (4) for the movement of the connecting shaft (7) at a position corresponding to the connecting shaft (7).

3. An improved elevator safety gear according to claim 1, characterized in that the gear holder (1) is provided with a pin (12), and the floating plate (3) is rotatably mounted on the pin (12).

4. An improved elevator safety gear according to claim 3, characterized in that the gear seat (1) is fixedly provided with a support plate (11) for supporting the electromagnet (6);

one end of the floating plate (3) far away from the pin shaft (12) is provided with a connecting sheet (10) which is integrally formed with the floating plate (3), and the connecting sheet (10) is perpendicular to the floating plate (3) and fixedly connected with the output end of the electromagnet (6).

5. An improved elevator safety gear according to claim 1, characterized in that the side of the floating plate (3) remote from the brake wheel (5) is provided with a hinge piece (13) integrally formed with the floating plate (3), the hinge piece (13) is perpendicular to the floating plate (3), and the end of the hinge piece (13) remote from the floating plate (3) is close to the gear seat (1);

a supporting rod (14) transversely penetrating through the hinge piece (13) and fixedly connected with the clamp seat (1) is arranged at the position, corresponding to the hinge piece (13), of the clamp seat (1), and the hinge piece (13) is in sliding connection with the supporting rod (14);

the trigger spring (15) is sleeved on the supporting rod (14), and two ends of the trigger spring (15) are fixedly connected with one end, away from the clamp seat (1), of the supporting rod (14) and one surface, away from the clamp seat (1), of the hinge piece (13) respectively.