CN217708439U - Safety protection device for elevator - Google Patents

Abstract

The utility model relates to a lifting machine field, concretely relates to lifting machine safety arrangement, including safety tongs, the overspeed governor, steel cable and buffer gear, buffer gear includes top buffering subassembly and adds the buffering subassembly, top buffering subassembly is located lift platform under, top buffering subassembly fixed mounting is on the lifting machine, it is located one side of top buffering subassembly to add the buffering subassembly, it contradicts with top buffering subassembly to add the buffering subassembly, add buffering subassembly fixed mounting on the lifting machine, this lifting machine safety arrangement, increase buffer gear on the basis of safety tongs and overspeed governor, so as to be used for replacing the blotter, and replace through this kind of mode, buffer gear cushions the protection to lift platform through top buffering subassembly, make the buffering effect obviously stronger than the effect of blotter, and on this basis, increase again and add the buffering subassembly, make the buffering effect further strengthen, and do not cause the increase of buffer gear direction of height, practice thrift the space.

Description

Safety protection device for elevator

Technical Field

The utility model relates to a lifting machine field, concretely relates to lifting machine safety arrangement.

Background

When the elevator is out of control, the elevator car descends in an overspeed way, the elevator car and the goods are stopped to descend by the overspeed governor and the safety tongs, and therefore the elevator car is stably stopped at a certain position of the frame. The speed limiter and the safety tongs form a device for quickly stopping the car. The overspeed governor is installed at lifting machine frame top, and the safety tongs are installed in the bottom both sides of car, are connected by wire rope and pull rod between them. Overspeed governor and safety gear kind have a lot, their common function is exactly to stop the car and slide down out of control, all be out of order under the situation (this kind is possible few) of above all safety device, collide the frame bottom when car or goods vertical falling, contact the blotter for the blotter pressurized deformation makes car or goods obtain resilience, make the car finally static after rebounding several times, but traditional blotter buffering effect is not good, often still can make car (lift platform) receive the damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lifting machine safety arrangement.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a lifting machine safety arrangement, including safety tongs, overspeed governor, steel cable and buffer gear, buffer gear includes top buffering subassembly and adds the buffering subassembly, and top buffering subassembly is located lift platform under, and top buffering subassembly fixed mounting adds one side that the buffering subassembly is located top buffering subassembly on the lifting machine, adds the buffering subassembly and contradicts with top buffering subassembly for increase top buffering subassembly's buffering elasticity, add buffering subassembly fixed mounting on the lifting machine.

Further, top buffering subassembly includes the buffer board, four first guide pillars, first conflict springs, first linear bearing and first baffle, the equal fixed mounting of four first baffles is on the support body of lifting machine, four first linear bearings are fixed mounting respectively on four first baffles, four first guide pillars respectively with four first linear bearing sliding connection, buffer board fixed mounting is at the top of four first guide pillars, four first conflict springs overlap respectively and establish on four first guide pillars, the bottom of every first conflict spring is accepted with first linear bearing and is touched, leave the clearance between the top of first conflict spring and the buffer board, the bottom of first guide pillar with add the buffering subassembly contact.

Furthermore, the both sides of buffer board all are provided with the swash plate.

Further, it includes the limiting plate to add the buffering subassembly, the second baffle, two trapezoidal pieces, the second guide pillar, second linear bearing and second conflict spring, second baffle fixed mounting is on the support body of lifting machine, the equal fixed mounting of two second linear bearings is on the second baffle, two second guide pillars are equallyd divide do not with two second linear bearing sliding connection, two trapezoidal pieces are fixed mounting respectively and are served at one of two second guide pillars, the inclined plane of every trapezoidal piece all contacts with the bottom of a first guide pillar, limiting plate fixed mounting is on the other end of two second guide pillars, two second conflict springs are established respectively on two second guide pillars, the one end and the trapezoidal piece conflict of every second conflict spring, the other end is contradicted with second linear bearing.

The utility model has the advantages that: this lifting machine safety arrangement increases buffer gear on the basis of safety tongs and overspeed governor to be used for replacing the blotter, and replace through this kind of mode, cushion the protection to lift platform through top buffering subassembly, make the buffering effect obviously be stronger than the effect of blotter, and on this basis, increase again and add buffering subassembly, make the buffering effect further strengthen, and do not cause buffer gear direction of height's increase, practice thrift the space.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a perspective view of the buffering mechanism;

FIG. 3 is a perspective view of a top bumper assembly;

FIG. 4 is an exploded view of a portion of the cushioning mechanism;

FIG. 5 is an exploded perspective view of the cushioning assembly;

in the figure:

1. safety tongs;

2. a speed limiter;

3. a steel cord;

4. a buffer mechanism; 4a, a top buffer assembly; 4a1, a buffer plate; 4a2, a first guide pillar; 4a3, a first resisting spring; 4a4, a first linear bearing; 4a5, a first guide plate; 4a6, a sloping plate; 4b, adding a buffer component; 4b1, a trapezoidal block; 4b2, a second guide post; 4b3, a second linear bearing; 4b4, a limiting plate; 4b5, a second resisting spring; 4b6, a second guide plate.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 5, a lifting machine safety protection device shown comprises a safety gear 1, a speed limiter 2, a steel rope 3 and a buffer mechanism 4, wherein the buffer mechanism 4 comprises a top buffer component 4a and a buffer adding component 4b, the top buffer component 4a is located under a lifting platform, the top buffer component 4a is fixedly installed on the lifting machine, the buffer adding component 4b is located on one side of the top buffer component 4a, the buffer adding component 4b is abutted to the top buffer component 4a and used for increasing the buffer elasticity of the top buffer component 4a, and the buffer adding component 4b is fixedly installed on the lifting machine.

The top buffer component 4a comprises a buffer plate 4a1, four first guide posts 4a2, first collision springs 4a3, first linear bearings 4a4 and first guide plates 4a5, wherein the four first guide plates 4a5 are all fixedly mounted on a frame body of the elevator, the four first linear bearings 4a4 are respectively fixedly mounted on the four first guide plates 4a5, the four first guide posts 4a2 are respectively in sliding connection with the four first linear bearings 4a4, the buffer plate 4a1 is fixedly mounted at the tops of the four first guide posts 4a2, the four first collision springs 4a3 are respectively sleeved on the four first guide posts 4a2, the bottom end of each first collision spring 4a3 is in contact with the first linear bearing 4a4, a gap is reserved between the top end of the first collision spring 4a3 and the buffer plate 4a1, and the bottom end of the first guide post 4a2 is in contact with the buffer component 4 b. When the safety tongs and the speed limiter on the hoister are out of order, the lifting platform of the hoister falls down and contacts with the buffer plate 4a1, and the lifting platform presses the buffer plate 4a1 along with the continuous falling of the lifting platform, so that the buffer plate 4a1 pushes the first guide pillars 4a2 downwards, the four first guide pillars 4a2 push the buffering component 4b, and buffering and speed reduction are performed;

after the buffer plate 4a1 contacts with the first abutting spring 4a3, the lifting platform continues to descend, so that the buffering component 4b and the first abutting spring 4a3 buffer and decelerate the lifting platform together;

it can be imagined that, at first conflict spring 4a3 with can with buffer board 4a1 contact, carry out double buffering at the very beginning, but at first conflict spring 4a3 does not contact with buffer board 4a1 earlier, will slow down when the very beginning contacts, buffer board 4a1 and lift platform's impact, reduce buffer board 4a 1's damage, through setting up the mode of double buffering speed reduction, make the interval that buffer board 4a1 top and ground can design littleer, practice thrift the height of lifting frame body, be convenient for motion and installation, and buffering effect is better.

Both sides of the buffer plate 4a1 are provided with swash plates 4a6. Through setting up swash plate 4a6, avoid buffer plate 4a 1's closed angle fish tail workman, and reduce the dust and blow the bottom of buffer plate 4a1, play the effect that shelters from.

The buffering component 4b comprises a limiting plate 4b4, a second guide plate 4b6, two trapezoidal blocks 4b1, a second guide pillar 4b2, a second linear bearing 4b3 and a second abutting spring 4b5, the second guide plate 4b6 is fixedly installed on a frame body of the elevator, two second linear bearings 4b3 are fixedly installed on the second guide plate 4b6, the two second guide pillars 4b2 are respectively and slidably connected with the two second linear bearings 4b3, the two trapezoidal blocks 4b1 are respectively and fixedly installed on one ends of the two second guide pillars 4b2, an inclined surface of each trapezoidal block 4b1 is contacted with the bottom end of one first guide pillar 4a2, the limiting plate 4b4 is fixedly installed on the other ends of the two second guide pillars 4b2, the two second abutting springs 4b5 are respectively sleeved on the two second guide pillars 4b2, one end of each second abutting spring 4b5 abuts against the trapezoidal block 4b1, and the other end of the other end abuts against the second linear bearing 4b 3. When first guide pillar 4a2 downstream, first guide pillar 4a2 will promote trapezoidal piece 4b1 for trapezoidal piece 4b1 moves to the outside, and then makes trapezoidal piece 4b1 compress second conflict spring 4b5, through the conflict power of second conflict spring 4b5 to trapezoidal piece 4b1, and then cushions the speed reduction to lift platform.

Claims (4)

1. The utility model provides a lifting machine safety arrangement, including safety tongs (1), overspeed governor (2), steel cable (3) and buffer gear (4), a serial communication port, buffer gear (4) are including top buffering subassembly (4 a) and add buffering subassembly (4 b), top buffering subassembly (4 a) are located lift platform under, top buffering subassembly (4 a) fixed mounting is on the lifting machine, add one side that buffering subassembly (4 b) are located top buffering subassembly (4 a), it conflicts with top buffering subassembly (4 a) to add buffering subassembly (4 b), a buffering elasticity for increasing top buffering subassembly (4 a), add buffering subassembly (4 b) fixed mounting on the lifting machine.

2. The safety protection device of the elevator as claimed in claim 1, wherein the top buffer assembly (4 a) comprises a buffer plate (4 a 1), four first guide posts (4 a 2), four first abutment springs (4 a 3), four first linear bearings (4 a 4) and first guide plates (4 a 5), the four first guide plates (4 a 5) are all fixedly mounted on the frame body of the elevator, the four first linear bearings (4 a 4) are respectively fixedly mounted on the four first guide plates (4 a 5), the four first guide posts (4 a 2) are respectively slidably connected with the four first linear bearings (4 a 4), the buffer plate (4 a 1) is fixedly mounted at the top of the four first guide posts (4 a 2), the four first abutment springs (4 a 3) are respectively sleeved on the four first guide posts (4 a 2), the bottom end of each first abutment spring (4 a 3) is in contact with the first linear bearing (4 a 4), a gap is left between the top of the first abutment spring (4 a 3) and the buffer plate (1), and a gap is left between the bottom end of the first abutment spring (4 a 3) and the buffer plate (4 b).

3. The safety protection device for hoisting machine as claimed in claim 2, characterized in that the buffer plate (4 a 1) is provided with sloping plates (4 a 6) on both sides.

4. The safety protection device of the elevator according to claim 3, wherein the buffering assembly (4 b) comprises a limiting plate (4 b 4), a second guide plate (4 b 6), two trapezoidal blocks (4 b 1), a second guide post (4 b 2), a second linear bearing (4 b 3) and a second abutting spring (4 b 5), the second guide plate (4 b 6) is fixedly installed on a frame body of the elevator, the two second linear bearings (4 b 3) are fixedly installed on the second guide plate (4 b 6), the two second guide posts (4 b 2) are respectively in sliding connection with the two second linear bearings (4 b 3), the two trapezoidal blocks (4 b 1) are respectively and fixedly installed on one ends of the two second guide posts (4 b 2), an inclined surface of each trapezoidal block (4 b 1) is respectively contacted with the bottom end of one first guide post (4 a 2), the limiting plate (4 b 4) is fixedly installed on the other ends of the two second guide posts (4 b 2), the two second springs (4 b 5) are respectively sleeved on the two second guide posts (4 b 2), and the other ends of the two second linear bearings (4 b 3) abut against the other ends of the second linear bearings (4 b 2), and the other ends of the two second guide posts (4 b 3).

Images