CN220011774U

CN220011774U - Machine-room-free lower lifting safety tongs

Info

Publication number: CN220011774U
Application number: CN202321388988.4U
Authority: CN
Inventors: 刘淑君
Original assignee: Mercedes Elevator Suzhou Co ltd
Current assignee: Mercedes Elevator Suzhou Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-11-14
Anticipated expiration: 2033-06-02

Abstract

The utility model provides a machine-room-free lower lifting safety tongs which comprises a sliding structure, wherein the sliding structure comprises lifting blocks, the lifting blocks are symmetrically distributed on two sides of a vertical center line of a support I-steel, a rotating rod is rotatably connected to the outer wall of one side of each lifting block, and a connecting rod is rotatably connected to the middle of each rotating rod. According to the utility model, the contact area between the third friction plate at the inner side of the lifting block and the track can be increased through the two groups of lifting blocks, so that the falling elevator can be rapidly braked, the bottom mounting block moves upwards, the top mounting block moves downwards, the two groups of mounting blocks are connected through the rotating rod and the connecting rod, when the lifting block at the top is contacted with the guide rail, the guide rail can drive the lifting block at the top to move upwards, and then the lifting block at the top pulls the lifting block at the bottom to move upwards through the rotating rod and the connecting rod, so that the lifting block at the bottom can be tightly attached to the outer wall of the guide rail.

Description

Machine-room-free lower lifting safety tongs

Technical Field

The utility model belongs to the technical field of elevators, and particularly relates to a machine room-less lifting safety tongs.

Background

Elevator means a permanent transport device serving a number of specific floors in a building with its car running in at least two columns of rigid orbital motion perpendicular to the horizontal or inclined at an angle of less than 15 ° to the plumb line;

safety gear is the safety protection device of elevator. An elevator safety gear is a safety gear that emergency stops and clamps a car on a guide rail when the elevator speed exceeds a limit (or rated) speed set by an elevator speed limiter under the operation of the speed limiter, or in the event of breakage and slackening of a suspension rope. It provides an effective protection for the safe operation of the elevator, which is generally mounted on the car frame or counterweight frame.

When the unidirectional safety tongs are contacted with the track in the elevator shaft, the elevator can push the friction blocks in the safety tongs to move upwards, so that the friction blocks in the unidirectional safety tongs are contacted with the track, but the inner part of the unidirectional safety tongs only has two friction blocks, so that the elevator can be braked down, the brake length is longer, and the elevator can not be braked timely.

Disclosure of Invention

1. Object of the utility model

The utility model provides a machine-room-free lifting safety tongs for solving the technical problems in the background art.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is that the machine room-less downward lifting safety tongs comprise support I-beams, wherein the support I-beams are arranged at the bottom of an elevator, safety tongs shells are arranged at two ends of the support I-beams, a fixing structure is arranged on the inner wall of each safety tongs shell, and a sliding structure is connected with the outer wall of each fixing structure in a sliding manner;

the sliding structure comprises lifting blocks, wherein the lifting blocks are symmetrically distributed on two sides of a vertical center line of the support I-steel, a rotating rod is connected to the outer wall of one side of the lifting block in a rotating mode, a connecting rod is connected to the middle of the rotating rod in a rotating mode, a connecting shaft is arranged between the connecting rod of the outer wall of the lifting block at the bottom of the support I-steel and the connecting rod of the outer wall of the lifting block at the top of the support I-steel, and a safety tongs lever is arranged on the outer wall of the connecting shaft.

Preferably, the middle of the outer wall of the safety tongs shell is provided with a mounting bar, and the inside of one side of the safety tongs shell is provided with a limiting rod.

Preferably, the fixed knot constructs including the fixed block, fixed block one side is provided with the installation piece, the recess in the middle of the installation piece is laminated with the outer wall of installation strip, and installation piece passes through bolted connection with the safety tongs thick stick, the fixed block opposite side is provided with first friction block, the both sides of first friction block are provided with the side bar.

Preferably, the first friction blocks are symmetrically distributed on two sides of the horizontal center line of the support I-steel, and the first friction blocks are arranged in an isosceles triangle.

Preferably, the lifting block comprises a second friction block and a third friction block, the outer wall of the second friction block is attached to the outer wall of the first friction block, and the outer wall of the third friction block is attached to the outer wall of the track.

Preferably, a connecting block is arranged in the middle of the safety tongs bar and is rotationally connected with the safety tongs bar, and the connecting block is connected with the pull rod.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the utility model, the contact area between the third friction plate at the inner side of the lifting block and the track can be increased through the two groups of lifting blocks, so that the falling elevator can be rapidly braked, the bottom mounting block moves upwards, the top mounting block moves downwards, the two groups of mounting blocks are connected through the rotating rod and the connecting rod, when the top lifting block contacts with the guide rail, the guide rail drives the top lifting block to move upwards, and then the top lifting block pulls the bottom lifting block to move upwards through the rotating rod and the connecting rod, so that the bottom lifting block can be tightly attached to the outer wall of the guide rail;

because the first friction block needs to rub with the second friction block, the surface of the first friction block is easy to damage, the first friction block can be positioned through the arranged mounting block, and the first friction block can be rapidly mounted in the safety tongs shell.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective cross-sectional view of the safety gear housing of the present utility model;

FIG. 3 is a perspective view of a fixing structure of the present utility model;

fig. 4 is a perspective view of a sliding structure according to the present utility model.

Reference numerals

1. Supporting I-steel; 2. a safety tongs housing; 3. a fixed structure; 301. a fixed block; 302. a mounting block; 303. a first friction block; 304. side bars; 4. a limit rod; 5. a sliding structure; 501. a lifting block; 502. a second friction block; 503. a third friction block; 504. a rotating lever; 505. a connecting rod; 6. a safety tongs bar; 7. a connecting block; 8. and (5) mounting the strip.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", "coaxial", "bottom", "one end", "top", "other end", "one side", "front", "both ends", "both sides", etc. indicate orientations or positional relationships based on the drawings are merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," "provided," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Reference is now made to the drawings, wherein the showings are for the purpose of illustrating certain exemplary embodiments only and not for the purpose of limiting the utility model. Like reference numerals designate identical or corresponding parts throughout the several views. The dimensions and proportions in the figures are also for illustration only and should not be interpreted as limiting the utility model, these dimensions being possibly exaggerated relative to the actual product.

It should be noted that, since the structure not described in the present utility model does not relate to the design gist and the improvement direction of the present utility model, the above-mentioned contents belong to the technical knowledge of the inventor, and the technical contents in the present utility model are huge and complicated, so the above-mentioned contents of the present utility model do not necessarily constitute the prior art.

Referring to fig. 1-4, the machine room-less lifting safety tongs comprise a supporting I-steel 1, wherein the supporting I-steel 1 is arranged at the bottom of an elevator, safety tongs shells 2 are arranged at two ends of the supporting I-steel 1, a fixing structure 3 is arranged on the inner wall of the safety tongs shells 2, and a sliding structure 5 is connected with the outer wall of the fixing structure 3 in a sliding manner;

sliding construction 5, it includes lifter 501, lifter 501 symmetric distribution is in the both sides that support the perpendicular central line of I-steel 1, lifter 501 one side outer wall rotates and is connected with dwang 504, the swivelling joint is connected with connecting rod 505 in the middle of the dwang 504, be provided with the connecting axle between the connecting rod 505 that supports lifter 501 outer wall of I-steel 1 bottom and the connecting rod 505 that supports lifter 501 outer wall at I-steel 1 top, the outer wall of connecting axle is provided with safety tongs thick stick 6.

Further, in the above technical scheme, the middle of the outer wall of the safety tongs shell 2 is provided with the mounting bar 8, the inside of one side of the safety tongs shell 2 is provided with the stop lever 4, the inner wall groove of the mounting block 302 of one side of the fixing block 301 is connected with the outer wall of the mounting bar 8, then the bolt is inserted into the inside of the mounting block 302 and is connected with the mounting bar 8 to fix the fixing block 301, so that the fixing block 301 can be quickly mounted in the safety tongs shell 2.

Further, in the above technical scheme, the fixed structure 3 includes the fixed block 301, fixed block 301 one side is provided with the installation piece 302, the recess in the middle of installation piece 302 is laminated with the outer wall of installation strip 8, and installation piece 302 passes through bolted connection with safety tongs thick stick 6, the fixed block 301 opposite side is provided with first friction piece 303, the both sides of first friction piece 303 are provided with side bar 304, first friction piece 303 symmetric distribution is in the both sides of the horizontal central line that supports I-steel 1, first friction piece 303 sets up to isosceles triangle, can carry out spacingly to the direction of movement of sliding structure 5 through the side bar 304 of first friction piece 303 both sides, makes sliding structure 5 only upwards move along first friction piece 303, and the in-process that isosceles triangle set up first friction piece 303 can make lifting block 501 inwards move simultaneously and the guide rail laminating in the elevator shaft.

Further, in the above technical solution, the lifting block 501 includes a second friction block 502 and a third friction block 503, where the outer wall of the second friction block 502 is attached to the outer wall of the first friction block 303, the outer wall of the third friction block 503 is attached to the outer wall of the track, the second friction block 502 is attached to the first friction block 303, the second friction block 502 is used to frictionally slide on the outer wall of the first friction block 303, and the third friction block 503 can be attached to the outer wall of the guide rail during the inward movement of the lifting block 501, so as to brake the elevator.

Further, in the above technical scheme, the centre of safety tongs lever 6 is provided with connecting block 7, and connecting block 7 rotates with safety tongs lever 6 to be connected, connecting block 7 is connected with the pull rod, inserts the inside of connecting block 7 with the pull rod, then when the pull rod upwards moves, connecting block 7 drives safety tongs lever 6 and upwards rotates, then safety tongs lever 6 pulls sliding structure 5 to remove, makes sliding structure 5 laminate with first friction block 303 and rail respectively and brakes the elevator.

The working principle of the utility model is as follows:

referring to fig. 1 to 4 of the specification, firstly, a support i-beam 1 is mounted at the bottom of an elevator, grooves at two sides of the support i-beam 1 are attached to a rail, the rail is mounted between sliding structures 5, and then a pull rod of the elevator is inserted into a connecting block 7 for controlling the movement of the sliding structures 5;

when the elevator falls down and needs emergency braking, the pull rod moves upwards to pull the safety tongs bar 6 to move upwards, then the safety tongs bar 6 drives the connecting rod 505 to rotate outwards, then the outer wall of the connecting rod 505 is attached to the inner side of the limiting rod 4, the connecting rod 505 pulls the rotating rod 504 to move outwards, then the rotating rod 504 pulls the lifting block 501 to move inwards along the inclined surface of the first friction block 303, then the second friction block 502 on one side of the outer wall of the lifting block 501 is attached to the first friction block 303, the third friction block 503 on the other side of the outer wall of the lifting block 501 is attached to the track, the elevator is braked, and meanwhile, when the lifting block 501 supporting the top of the I-steel 1 is attached to the track, the track pulls the lifting block 501 supporting the top of the I-steel 1 to move upwards slightly, and meanwhile, the lifting block 501 at the top is attached to the track tightly, and the elevator can be braked rapidly.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A machine-room-less lifting safety tongs, which is characterized by comprising

The elevator safety device comprises a support I-steel (1), wherein the support I-steel (1) is arranged at the bottom of an elevator, safety tongs shells (2) are arranged at two ends of the support I-steel (1), a fixing structure (3) is arranged on the inner wall of each safety tongs shell (2), and a sliding structure (5) is connected to the outer wall of each fixing structure (3) in a sliding mode;

sliding construction (5), it includes lifter block (501), lifter block (501) symmetric distribution is in the both sides that support the perpendicular central line of I-steel (1), lifter block (501) one side outer wall rotates and is connected with dwang (504), swivelling joint has connecting rod (505) in the middle of dwang (504), be provided with the connecting axle between connecting rod (505) of lifter block (501) outer wall of supporting I-steel (1) bottom and connecting rod (505) of lifter block (501) outer wall of supporting I-steel (1) top, the outer wall of connecting axle is provided with safety tongs thick stick (6).

2. The machine room less pull-down safety tongs of claim 1 wherein: the safety tongs comprise a safety tongs shell (2), and is characterized in that an installation strip (8) is arranged in the middle of the outer wall of the safety tongs shell (2), and a limiting rod (4) is arranged in one side of the safety tongs shell (2).

3. The machine room less pull-down safety tongs of claim 1 wherein: the fixing structure (3) comprises a fixing block (301), one side of the fixing block (301) is provided with a mounting block (302), a groove in the middle of the mounting block (302) is attached to the outer wall of the mounting bar (8), the mounting block (302) is connected with a safety tongs lever (6) through bolts, the other side of the fixing block (301) is provided with a first friction block (303), and two sides of the first friction block (303) are provided with side bars (304).

4. A machine-roomless pull-down safety tongs as claimed in claim 3 wherein: the first friction blocks (303) are symmetrically distributed on two sides of the horizontal center line of the supporting I-steel (1), and the first friction blocks (303) are arranged into isosceles triangles.

5. The machine room less pull-down safety tongs of claim 1 wherein: the lifting block (501) comprises a second friction block (502) and a third friction block (503), wherein the outer wall of the second friction block (502) is attached to the outer wall of the first friction block (303), and the outer wall of the third friction block (503) is attached to the outer wall of the track.

6. The machine room less pull-down safety tongs of claim 1 wherein: the middle of the safety tongs bar (6) is provided with a connecting block (7), the connecting block (7) is rotationally connected with the safety tongs bar (6), and the connecting block (7) is connected with a pull rod.