CN215248906U

CN215248906U - Elevator safety tongs

Info

Publication number: CN215248906U
Application number: CN202121803044.XU
Authority: CN
Inventors: 苏玉霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-12-21
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses an elevator safety gear, which comprises a mounting seat; the utility model discloses a control box is arranged at the bottom of the coil strip, the control box arranged on the back of the mounting seat controls the power supply coil strip of the power supply block to attract each other, so that the wedge block connected at one side of the connecting rod moves relatively, thereby facilitating the elevator cage to adopt the braking function in the process of rapid falling, the wedge blocks at the two sides of the guide rail clamp the guide rail to reduce the space between the guide rails so as to clamp the elevator guide rail to realize braking, the braking efficiency is high, the failure rate is low, the use safety is high.

Description

Elevator safety tongs

Technical Field

The utility model relates to an elevator makes technical field, especially relates to an elevator safety tongs.

Background

When an elevator has an unexpected fault, which causes the elevator to run at an overspeed, or the elevator falls unexpectedly, a safety protection device is usually arranged on the elevator in order to protect the safety of passengers. The conventional safety protection device comprises a speed limiter and a safety gear, wherein when the elevator runs at an overspeed, the speed limiter starts to pull up a pull rod of the safety gear, so that the safety gear clamps a guide rail to brake the elevator car. Conventional safety tongs are classified into instantaneous type and progressive type and used in elevators whose running speeds are below 0.63m/s and above 0.63m/s, respectively. However, the conventional safety tongs generate high heat during actual braking, and the friction plates of the braking surface are easily worn during long-term operation of the elevator, so that the safety performance is reduced.

If the publication number is CN203255828U, entitled "safety tongs for elevator", the granted announcement date is 20131013, which includes a detection mechanism, a brake mechanism controlled by the detection mechanism, and a bracket for fixing the brake mechanism, the safety tongs also includes a main rail fixedly installed in the hoistway for bearing the car, and a secondary rail fixedly installed on the car for fixedly installing the bracket; the detection mechanism controls the brake mechanism through a control cable made of soft materials. The safety gear is fixed on the car through the auxiliary rail, the position of the safety gear relative to the car can be changed randomly along the auxiliary rail, and the safety gear not only has a fixed position, but also can be determined according to the actual situation of the installation position of the car, is convenient to install and has low cost; the structure is simple, and the elevator is particularly suitable for small elevators; the friction layer is arranged on the clamping surface of the safety gear, so that friction is increased, and the braking effect is effectively improved;

the prior art including the above patent has a disadvantage that the speed of the elevator cage is rapidly increased when the elevator cage falls, so that the elevator cage cannot be stopped even if braking is carried out, and thus, personnel in the elevator cage have potential safety hazards and threaten life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevator safety tongs, the control box control power supply block power supply coil strip that sets up through the mount pad back inhales mutually for be located the wedge relative motion that connecting rod one side is connected, the elevator railway carriage of being convenient for is in the in-process that falls fast, takes braking function, thereby the wedge that is located the guide rail both sides is cliied the guide rail interval and is reduced and realize cliping elevator guide rail and realize the braking, and braking efficiency is high, and the fault rate is low, and the safety in utilization is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an elevator safety gear comprises a mounting seat; the top end of the mounting seat is symmetrically provided with fixed blocks, the middle parts of the fixed blocks are provided with guide rails, the bottom ends of the mounting seat are symmetrically provided with speed measuring mechanisms,

the middle of the mounting seat is symmetrically provided with wedge blocks, one side of each wedge block is provided with a connecting rod, one end of each connecting rod is connected with a coil strip, the coil strips are symmetrically arranged on the back of the mounting seat, one side of the mounting seat is symmetrically provided with power supply blocks, the power supply blocks are electrically connected with the coil strips, a control box is arranged at the bottom end of each coil strip, the control box controls the power supply blocks to attract the power supply coil strips, and the wedge blocks connected with the connecting rods move relatively;

as a further description of the above technical solution:

notches are symmetrically formed in the middle of the mounting seat, and sliding rods are arranged in the middle of the notches.

As a further description of the above technical solution:

the one end that the wedge is close to the guide rail is provided with the piece of stopping, the sliding tray has been seted up to the wedge rear end, is located sliding tray middle part sliding connection has the sliding block, and the sliding block is fixed on the connecting rod.

As a further description of the above technical solution:

the connecting rod is an L-shaped connecting rod, a directional groove is formed in the middle of the connecting rod, and a sliding rod is sleeved in the middle of the directional groove.

As a further description of the above technical solution:

the speed measuring mechanism comprises a speed measuring block, one side of the speed measuring block is connected with a speed measuring wheel through a connecting arm, and the speed measuring wheel is attached to the surface of the guide rail.

As a further description of the above technical solution:

the speed measuring device is characterized in that a fixed shaft is arranged on one side of the speed measuring block, a torsion spring is arranged in the middle of the fixed shaft, and the torsion spring is fixed on the connecting arm.

As a further description of the above technical solution:

a limiting block is arranged on one side of the fixed shaft, and a torsional spring is fixedly connected to the inner side of the limiting block.

As a further description of the above technical solution:

the middle part of the speed measuring wheel is provided with a rotating shaft, and the rotating shaft is fixed on the connecting arm.

The utility model provides an elevator safety tongs possesses following beneficial effect:

1. the utility model discloses in, the control box control power supply block power supply coil strip that sets up through the mount pad back surface inhales mutually for the wedge relative motion who is located connecting rod one side and connects, the elevator railway carriage or compartment of being convenient for is in the in-process that falls fast, takes braking function, thereby the wedge that is located the guide rail both sides clip the guide rail interval and reduce to realize cliping elevator guide rail and realize the braking, braking efficiency is high, and the fault rate is low, and the safety in utilization is high.

2. The utility model discloses in, establish on the slide bar through the directional groove cover that sets up in the connecting rod, be of value to the motion that the connecting rod keeps the horizontal direction, be located the sliding block sliding connection's that connecting rod one side set up wedge, when the wedge of being convenient for realizes the braking to the guide rail, the wedge can remove and the fixed block, increases the braking effect of wedge, improves the practicality of this device.

3. The utility model discloses in, whether speed that the cage descends is known through the tachometer wheel that sets up in the tachometer mechanism is unusual, with the descending speed transmission of elevator railway carriage or compartment to the control box in, whether control through the control box carries out emergency braking. When the elevator safety device is used, the braking speed is quicker, the braking reaction time of the elevator safety device is prolonged, and the safety performance of the elevator is improved, so that the injury to internal personnel when the elevator falls is reduced.

Drawings

Fig. 1 is a schematic structural view of an elevator safety gear provided by the present invention;

fig. 2 is a schematic view of a back structure of the mounting base of the present invention;

fig. 3 is a schematic structural view of a wedge block in the present invention;

fig. 4 is an enlarged view of a portion a in fig. 1 according to the present invention;

fig. 5 is an enlarged view of the position b in fig. 2 according to the present invention;

illustration of the drawings:

1. a mounting seat; 11. a power supply block; 12. a notch; 13. a slide bar; 2. a guide rail; 3. a fixed block; 4. a wedge block; 41. a connecting rod; 42. a coil strip; 43. a slider; 44. a directional tank; 45. a sliding groove; 46. a brake sheet; 5. a speed measuring mechanism; 51. a speed measuring block; 52. a connecting arm; 53. a rotating shaft; 54. a speed measuring wheel; 55. a fixed shaft; 56. a limiting block; 57. a torsion spring; 6. and a control box.

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.

Referring to fig. 1-5, an elevator safety gear includes a mounting seat 1; the top end of the mounting seat 1 is symmetrically provided with fixed blocks 3, the middle part of each fixed block 3 is provided with a guide rail 2, the bottom end of the mounting seat 1 is symmetrically provided with a speed measuring mechanism 5, the middle part of the mounting seat 1 is symmetrically provided with a wedge block 4, one side of each wedge block 4 is provided with a connecting rod 41, one end of each connecting rod 41 is connected with a coil strip 42, the coil strips 42 are symmetrically arranged on the back surface of the mounting seat 1, one side of the mounting seat 1 is symmetrically provided with a power supply block 11, the power supply block 11 is electrically connected with the coil strips 42, the bottom end of each coil strip 42 is provided with a control box 6, the control box 6 controls the power supply coil strips 42 of the power supply block 11 to attract each other, and the wedge blocks 4 connected with the connecting rods 41 move relatively;

the power supply coil strips 42 of the power supply block 11 are controlled to attract each other through the control box 6 arranged on the back of the mounting seat 1, so that the wedge blocks 4 connected on one side of the connecting rod 41 move relatively, the elevator cage can conveniently adopt a braking function in the process of quick falling, the wedge blocks 4 on two sides of the guide rail 2 clamp the guide rail, the space between the guide rails is reduced, and the elevator guide rail is clamped to realize braking, the braking efficiency is high, the fault rate is low, and the use safety is high;

notches 12 are symmetrically formed in the middle of the mounting seat 1, and sliding rods 13 are arranged in the middle of the notches 12;

a brake sheet 46 is arranged at one end of the wedge-shaped block 4 close to the guide rail 2, a sliding groove 45 is formed in the rear end of the wedge-shaped block 4, a sliding block 43 is connected to the middle of the sliding groove 45 in a sliding mode, and the sliding block 43 is fixed on the connecting rod 41;

the connecting rod 41 is an L-shaped connecting rod, a directional groove 44 is formed in the middle of the connecting rod 41, and a sliding rod 13 is sleeved in the middle of the directional groove 44;

the guide rail 2 is sleeved with the slide rod 13 through the directional groove 44 arranged in the connecting rod 41, so that the connecting rod 41 can keep moving in the horizontal direction, the wedge block 4 connected with the slide block 43 arranged on one side of the connecting rod 41 in a sliding mode is convenient for the wedge block 4 to move and be clamped with the fixed block 3 when the wedge block 4 brakes the guide rail 2, the braking effect of the wedge block 4 is increased, and the practicability of the device is improved;

the speed measuring mechanism 5 comprises a speed measuring block 51, one side of the speed measuring block 51 is connected with a speed measuring wheel 54 through a connecting arm 52, and the speed measuring wheel 54 is attached to the surface of the guide rail 2;

one side of the speed measuring block 51 is provided with a fixed shaft 55, the middle part of the fixed shaft 55 is provided with a torsion spring 57, the torsion spring 57 is fixed on the connecting arm 52,

a limiting block 56 is arranged on one side of the fixed shaft 55, and a torsion spring 57 is fixedly connected to the inner side of the limiting block 56;

a rotating shaft 53 is arranged in the middle of the speed measuring wheel 54, and the rotating shaft 53 is fixed on the connecting arm 52;

whether the descending speed of the elevator cage is abnormal is known through a speed measuring wheel 54 arranged in the speed measuring mechanism 5, the descending speed of the elevator cage is transmitted to the control box 6, and whether emergency braking is carried out is controlled through the control box 6. When the elevator safety device is used, the braking speed is quicker, the braking reaction time of the elevator safety device is prolonged, and the safety performance of the elevator is improved, so that the injury to internal personnel when the elevator falls is reduced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An elevator safety gear is characterized by comprising a mounting seat (1);

the top end of the mounting seat (1) is symmetrically provided with fixed blocks (3), the middle part of each fixed block (3) is provided with a guide rail (2), the bottom end of the mounting seat (1) is symmetrically provided with a speed measuring mechanism (5),

mount pad (1) middle part symmetry is provided with wedge (4), is located wedge (4) one side is provided with connecting rod (41), is located connecting rod (41) one end is connected with coil strip (42), just coil strip (42) symmetry sets up at the mount pad (1) back, mount pad (1) one side symmetry is provided with power pack (11), and power pack (11) with coil strip (42) electric connection is located coil strip (42) bottom is provided with control box (6), and control box (6) control power pack (11) power supply coil strip (42) attract mutually, is located wedge (4) relative motion that connecting rod (41) are connected.

2. An elevator safety gear according to claim 1, characterized in that notches (12) are symmetrically arranged in the middle of the mounting seat (1), and a sliding rod (13) is arranged in the middle of the notches (12).

3. The elevator safety gear according to claim 1, characterized in that one end of the wedge-shaped block (4) close to the guide rail (2) is provided with a brake piece (46), the rear end of the wedge-shaped block (4) is provided with a sliding groove (45), the middle part of the sliding groove (45) is slidably connected with a sliding block (43), and the sliding block (43) is fixed on the connecting rod (41).

4. The elevator safety gear according to claim 1, characterized in that the connecting rod (41) is an L-shaped connecting rod, a directional groove (44) is arranged in the middle of the connecting rod (41), and a sliding rod (13) is sleeved in the middle of the directional groove (44).

5. The elevator safety gear according to claim 1, characterized in that the speed measuring mechanism (5) comprises a speed measuring block (51), a speed measuring wheel (54) is connected to one side of the speed measuring block (51) through a connecting arm (52), and the speed measuring wheel (54) is attached to the surface of the guide rail (2).

6. The elevator safety gear according to claim 5, characterized in that a fixed shaft (55) is arranged on one side of the speed measuring block (51), a torsion spring (57) is arranged in the middle of the fixed shaft (55), and the torsion spring (57) is fixed on the connecting arm (52).

7. The elevator safety gear according to claim 6, characterized in that a limiting block (56) is arranged on one side of the fixed shaft (55), and a torsion spring (57) is fixedly connected to the inner side of the limiting block (56).

8. Elevator safety gear according to claim 5, characterized in that the speed measuring wheel (54) is provided with a rotation shaft (53) in the middle, and that the rotation shaft (53) is fixed to the connecting arm (52).