CN211945795U - Elevator braking device and elevator device - Google Patents

Abstract

The utility model discloses an elevator arresting gear and elevator device, elevator arresting gear include frame, elastic expansion part, slip braking part, surround spare, auxiliary brake spare, the frame is equipped with the guide rail groove, elastic expansion part fixes be close to on the frame the department is led to the rail groove, the surround is laid on the frame, slip braking part movable mounting in on the surround and with elastic expansion part corresponds the setting, auxiliary brake spare passes the frame just is connected the slip braking part, when slip braking part slides towards setting for the direction, the surround supports tightly slip braking part rail groove skew, just the slip braking part with elastic expansion part acts on mutually. The elevator braking device has the advantages of adapting to the quality of the elevator to adjust the braking force, ensuring the safety of passengers and prolonging the service life of the elevator.

Description

Elevator braking device and elevator device

Technical Field

The utility model belongs to the elevator field, concretely relates to elevator arresting gear and elevator device.

Background

With the increasing number of floors of residential buildings, the application of elevators is increasingly wide. Because the quality of an elevator system is influenced by a plurality of factors, the current elevator braking device is set according to the maximum quality of the elevator system: the braking force of the braking device is set according to the self-weight full load capacity. When the braking force is the same and the mass difference between the light load and the full load of the elevator is large, the light load of the elevator can cause the phenomenon that the braking deceleration degree of the lift car is too large, the too large braking deceleration degree can cause injury to passengers, and meanwhile, the counter weight can be caused to throw reversely, so that equipment is damaged.

Disclosure of Invention

An object of the utility model is to provide an elevator arresting gear, its advantage is adaptation elevator quality adjustment brake force, guarantees passenger's safety and extension elevator life-span. The technical scheme is as follows:

the elevator braking device comprises: the safety protection device comprises a base, an elastic expansion piece, a sliding braking piece, a surrounding piece and an auxiliary braking piece, wherein the base is provided with a guide rail groove, the elastic expansion piece is fixed to the base and close to the guide rail groove, the surrounding piece is arranged on the base, the sliding braking piece is movably arranged on the surrounding piece and corresponds to the elastic expansion piece, the auxiliary braking piece penetrates through the base and is connected with the sliding braking piece, when the sliding braking piece slides towards a set direction, the surrounding piece abuts against the sliding braking piece and deviates from the guide rail groove, and the sliding braking piece and the elastic expansion piece act mutually.

Further, the enclosing piece comprises a fixed wedge block and a supporting body, the fixed wedge block and the sliding braking piece are installed on the inner side of the supporting body, the sliding braking piece is provided with a first inclined surface, the fixed wedge block is provided with a second inclined surface, the first inclined surface and the second inclined surface are oppositely arranged, and the sliding braking piece slides along the second inclined surface.

Furthermore, the supporting body is a U-shaped spring, the two fixed wedge blocks are respectively fixed on the inner sides of two sides of the U-shaped spring, and the two sliding braking pieces are respectively arranged corresponding to the two fixed wedge blocks.

Further, still include the roller group, the roller group is in between first inclined plane and the second inclined plane, the roller group includes the same roller of at least two sizes that set up side by side.

The sliding braking piece is provided with a limiting groove, one side of the guiding side plate, which is far away from the folded edge, is fixed with the fixed wedge block, and the folded edge on the guiding side plate is clamped into the limiting groove; the guide bottom plate is provided with a guide hole, the guide bottom plate is fixed on the base, and the fixed wedge block penetrates through the guide hole to be connected with the base.

Further, when the sliding brake part slides along the second inclined surface to a certain travel, the sliding brake part contacts and compresses the elastic expansion part.

Furthermore, the auxiliary braking part comprises a lifting nut, a lifting rod and a lifting plate, the lifting nut is fixedly connected with the lifting rod, one end of the lifting rod, which is far away from the lifting nut, is fixedly connected with the lifting plate, and the lifting plate is movably connected with the sliding braking part.

Further, the frame still is equipped with backup pad and installation department, the backup pad is located the both sides of frame, the installation department is located the top and the bottom of frame.

Further, the device also comprises a support stud, and one end of the support stud supports the surrounding piece.

The elevator device comprises a guide rail, a car and the elevator braking device, wherein the car ascends and descends along the guide rail under the traction of a dragging rope, the elevator braking device is fixedly installed on the car, and the guide rail is positioned in the guide rail groove of the elevator braking device.

The utility model provides a technical scheme is equipped with following advantage and effect:

the elevator guide rail is placed in the guide rail groove, when the car falls and needs braking and the guide rail moves upwards relative to the car, the speed limiter is triggered, so that the safety tongs lifting mechanism pulls the auxiliary braking part, the two sliding braking parts are lifted and pulled, the two sliding braking parts slide oppositely and then rub against the guide rail, friction force is generated, and the elevator is braked. Under the effect of guide rail friction, the slip braking part can upwards slide, and the surround can be to slip braking part to the guide rail direction tight this moment, and the more the slip braking part upwards slides the stroke then receives to support tight pressure the bigger, and is also bigger to the frictional force of guide rail. When the sliding braking part slides upwards for a certain stroke, the sliding braking part starts to be in contact with the elastic expansion part, the elastic expansion part is compressed when the sliding braking part continues to move upwards, the elastic expansion part has downward elastic force on the sliding braking part, the elastic force keeps balance with the friction force applied to the sliding braking part all the time, and the pressure of the surrounding part on the sliding braking part is unchanged. When the elevator system has large mass, the compression amount of the elastic expansion piece is large, and the expansion degree of the enclosing piece is large, the pressure on the sliding braking piece is large; when the elevator system has small mass, the compression amount of the elastic expansion piece is small, and the expansion degree of the enclosing piece is small, the pressure on the sliding braking piece is small. When the elevator is lightly loaded, the pressure of the sliding braking part on the elastic telescopic part is small, the opening degree of the enclosing part is small, the pressure of the enclosing part on the sliding braking part is reduced, the friction force between the sliding braking part and the guide rail is reduced, the braking deceleration is also reduced, and the range of the national standard requirement is maintained. This device can adapt to different elevator quality, and automatically regulated frictional force guarantees braking effect and braking deceleration, guarantees smooth-going braking effect, and the passenger can not arouse discomfort because of the elevator slows down too fast and inertia falls down, fracture even. Meanwhile, the situation that the counterweight is thrown backwards to influence the safety of the elevator due to too large deceleration is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles, principles and effects of the invention.

Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.

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

FIG. 2 is a schematic perspective view of the present invention;

fig. 3 is an enlarged schematic view of a part a in the front view of the present invention;

fig. 4 is an enlarged schematic view of the B part of the three-dimensional structure of the present invention.

Description of reference numerals:

10. the device comprises a base 101, guide rail grooves 102, guide side plates 1021, folding edges 103, guide bottom plates 104, support plates 105, mounting portions 106, support studs 20, disc springs 201, anti-falling studs 202, anti-falling pins 203, anti-falling nuts 204, spring rings 30, sliding wedges 301, limiting grooves 302, first inclined planes 401, fixing wedges 4011, second inclined planes 402, U-shaped springs 403, roller groups 501, lifting nuts 5011, lifting pins 502, lifting rods 503 and lifting plates.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In combination with the present technical solution's realistic scene, all technical and scientific terms used herein may also be provided with meanings corresponding to the purposes of realizing the technical solution of the present invention.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

As used herein, unless otherwise specified or defined, the terms "comprises," "comprising," and "comprising" are used interchangeably to refer to the term "comprising," and are used interchangeably herein.

It is needless to say that technical contents or technical features which are contrary to the object of the present invention or clearly contradict each other should be excluded.

As shown in fig. 1 to 4, the elevator braking device includes a base 10, an elastic expansion member, a sliding braking member, an enclosure, and an auxiliary braking member, where the embodiment takes a situation that the elastic expansion member is installed above the base 10 and braking is required when a guide rail moves upward as an example, the base 10 is provided with a guide rail groove 101, a guide side plate 102 and a guide bottom plate 103, a support plate 104, an installation portion 105, and a support stud 106, the enclosure includes a fixed wedge 401, a support body, and a roller set 403, and the auxiliary braking member includes a lifting nut 501, a lifting rod 502, and a lifting plate 503; the disc spring 20 is selected as the elastic expansion part, the disc spring 20 comprises an anti-drop stud 201, an anti-drop pin 202, an anti-drop nut 203 and a spring coil 204, the sliding braking part is selected as the sliding wedge block 30, and the supporting body is selected as the U-shaped spring 402.

The disc spring 20 is fixed on the base 10 near the guide rail groove 101, the fixed wedge 401 and the U-shaped spring 402 are placed on the base 10, the sliding wedge 30 is movably mounted on the fixed wedge 401 and is arranged corresponding to the disc spring 20, and when the sliding wedge 30 slides upwards for a certain stroke, the sliding wedge can contact with the disc spring 20 and compress the disc spring 20, so that the disc spring 20 can work. The auxiliary brake passes through the machine base 10 and is connected with the sliding wedge 30, when the sliding wedge 30 slides upwards, the U-shaped spring 402 and the fixed wedge 401 tightly press against the sliding wedge 30 to deflect towards the guide rail groove 101, and the sliding wedge 30 and the disc spring 20 act.

The elevator guide rail is placed in the guide rail groove 101, when an elevator car falls, the guide rail moves upwards relative to the car and needs braking, the speed limiter is triggered, so that the safety gear lifting mechanism drives the lifting rod 502 to act, then the lifting plate 503 lifts the two sliding wedge blocks 30, the two sliding wedge blocks 30 slide upwards and then rub against the guide rail, friction force is generated, and the elevator is braked. Under the action of the friction of the guide rail, the sliding wedge 30 slides upwards, at the moment, the U-shaped spring 402 and the fixed wedge 401 tightly support the sliding wedge 30 towards the guide rail, the more the upward sliding stroke of the sliding wedge 30 is, the higher the supported pressure is, and the higher the friction force to the guide rail is. When the sliding wedge 30 slides upward for a certain stroke, it starts to contact with the disc spring 20, and when the stroke continues, the disc spring 20 compresses the disc spring 20, and the disc spring 20 generates a downward elastic force to the sliding wedge 30, which keeps balance with the friction force applied to the sliding wedge 30, and at this time, the pressure of the U-shaped spring 402 and the fixed wedge 401 to the sliding wedge 30 is not changed. When the mass of the elevator system is large, the compression amount of the disc spring 20 is large, and the spreading degree of the U-shaped spring 402 is large, the pressure on the sliding wedge block 30 is large; when the mass of the elevator system is small, the compression amount of the disc spring 20 is small, and the U-shaped spring 402 is spread to a small degree, so that the pressure on the sliding wedge 30 is small. When the elevator is lightly loaded, the pressure of the sliding wedge block 30 on the disc spring 20 is small, the spreading degree of the U-shaped spring 402 is small, the pressure of the U-shaped spring 402 on the sliding wedge block 30 is reduced, the friction force between the sliding wedge block 30 and the guide rail is reduced, the braking deceleration is also reduced, and the range of the national standard requirement is maintained. This device can adapt to different elevator quality, and automatically regulated frictional force guarantees braking effect and braking deceleration, guarantees smooth-going braking effect, and the passenger can not arouse discomfort or even inertia because the elevator slows down too fast and falls down, the fracture, also avoids simultaneously because deceleration is too big leading to the counter weight to throw the influence elevator safety.

As shown in fig. 3, the fixed wedge 401 and the sliding wedge 30 are mounted inside the U-spring 402: the two fixed wedges 401 are fixed to the inner sides of the two sides of the U-shaped spring 402, and the two sliding wedges 30 are respectively disposed corresponding to the two fixed wedges 401. Sliding wedge 30 is equipped with first inclined plane 302, fixed wedge 401 is equipped with second inclined plane 4011, first inclined plane 302 with second inclined plane 4011 sets up relatively, sliding wedge 30 can along second inclined plane 4011 slides, roller group 403 is in first inclined plane 302 with between the second inclined plane 4011, roller group 403 includes the same roller of size of two at least settings side by side. One side of the guide side plate 102 is provided with a folded edge 1021, the sliding wedge 30 is provided with a limiting groove 301, one side of the guide side plate 102, which is far away from the folded edge 1021, is fixed with the fixed wedge 401, and the folded edge 1021 on the guide side plate 102 is clamped in the limiting groove 301; the guide bottom plate 103 is provided with a guide hole, the guide bottom plate 103 is fixed on the machine base 10, and the fixed wedge 401 penetrates through the guide hole to be connected with the machine base 10.

The purpose of the mutual engagement between the first inclined surface 302 and the second inclined surface 4011 is to guide the sliding wedge 30 to slide in a set direction, wherein the back surface of the second inclined surface 4011 on the fixed wedge 401 is fixed to the inner side surface of the U-shaped spring 402, the U-shaped spring 402 has elasticity, and the correct assembly allows the U-shaped spring 402 to change the elasticity of the sliding wedge 30 according to the action of the sliding wedge 30: when the sliding wedge 30 moves upwards, due to the action of the inclined surface component force, the sliding wedge 30 has component force in the horizontal direction on two sides, the U-shaped spring 402 is expanded, the larger the elastic deformation degree of the U-shaped spring 402 is, the larger the pressure of the U-shaped spring 402 on the sliding wedge 30 is; when the sliding wedge 30 is subject to the elastic force of the disc spring 20, the upward movement tendency is reduced, and the pressure of the U-shaped spring 402 on the sliding wedge 30 is kept constant or reduced. The roller group 403 is installed between the first inclined surface 302 and the second inclined surface 4011, so as to reduce friction between the first inclined surface 302 and the second inclined surface 4011, and the guide side plate 102 and the limiting groove 301 limit the sliding wedge 30 and the roller group 403, so that the sliding wedge 30 and the roller group 403 can not fall off along a designed track during action. The guide base plate 103 is provided with guide holes, and the fixed wedge 401 moves during the operation of opening the U-shaped spring 402 by the slide wedge 30, and the guide base plate 103 and the guide holes are provided to keep the fixed wedge 401 movably connected to the housing 10.

The lifting nut 501 fixedly connects the safety gear lifting mechanism with the lifting rod 502, one end of the lifting rod 502 far away from the lifting nut 501 is fixedly connected with the lifting plate 503, and the lifting plate 503 is movably connected with the sliding wedge 30. The speed governor is a part (not shown in the figure) triggering the operation of an elevator braking device, the speed governor is connected with a safety gear lifting mechanism, the safety gear lifting mechanism is connected with a lifting rod 502 through a lifting nut 501 and a lifting pin 5011, a lifting plate 503 is simultaneously connected with two sliding wedges 30, the sliding wedges 30 are connected with the lifting plate 503 through pins because the distance between the two sliding wedges 30 changes during lifting, the lifting plate 503 is provided with long through holes, and the pins penetrate through the long through holes and are then inserted into the sliding wedges 30. When the speed governor is triggered, the lifting plate 503 is lifted by the safety gear lifting mechanism to drive the sliding wedge block 30 to move upwards to rub with the guide rail, and after the sliding wedge block 30 begins to rub with the guide rail, the speed governor stops rotating.

The support plates 104 are located at both sides of the housing 10, and the mounting portions 105 are located at the top and bottom of the housing 10. One end of the support stud 106 supports the U-shaped spring 402, and the other end is disposed correspondingly. The support plates 104 are located at both sides of the machine base 10 without affecting the operation of other parts, and connect the upper plate and the lower plate of the machine base 10, and the mounting portions 105 may be through holes, and screw bolts can fix the elevator braking device to the car. The support stud 106 mainly functions to support the U-shaped spring 402, the support stud 106 is located below the U-shaped spring 402, one end of the support stud supports the U-shaped spring 402, and the other end of the support stud abuts against the machine base 10; support studs 106 located on either side of U-shaped spring 402, one end supporting U-shaped spring 402 and the other end held at a suitable distance from the external rigid solid: only when U-spring 402 is expanded outward to a certain extent will support stud 106 contact the external rigid solid and limit U-spring 402 from continuing to expand, protecting U-spring 402.

The elevator device comprises a guide rail, a car and an elevator braking device, wherein the car ascends and descends along the guide rail under the traction of a dragging rope, the elevator braking device is fixedly installed on the car, and the guide rail is positioned in the guide rail groove 101 of the elevator braking device.

In one embodiment, the resilient extension may be mounted below the base 10 and may be a spring with a high spring rate, which is fixedly attached to the sliding wedge 30.

The above embodiments are intended to be illustrative, and should not be construed as limiting the scope of the invention, and the technical solutions, objects and effects of the present invention are described in full herein.

The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims (10)

1. Elevator arresting gear, its characterized in that includes: the safety protection device comprises a base, an elastic expansion piece, a sliding braking piece, a surrounding piece and an auxiliary braking piece, wherein the base is provided with a guide rail groove, the elastic expansion piece is fixed to the base and close to the guide rail groove, the surrounding piece is arranged on the base, the sliding braking piece is movably arranged on the surrounding piece and corresponds to the elastic expansion piece, the auxiliary braking piece penetrates through the base and is connected with the sliding braking piece, when the sliding braking piece slides towards a set direction, the surrounding piece abuts against the sliding braking piece and deviates from the guide rail groove, and the sliding braking piece and the elastic expansion piece act mutually.

2. The elevator brake of claim 1, wherein said enclosure includes a stationary wedge and a support body, said stationary wedge and said slide stop being mounted inside said support body, said slide stop having a first sloped surface, said stationary wedge having a second sloped surface, said first sloped surface and said second sloped surface being disposed opposite each other, said slide stop sliding along said second sloped surface.

3. The elevator braking apparatus according to claim 2, wherein said supporting body is a U-shaped spring, two of said fixing wedges are fixed to inner sides of both sides of said U-shaped spring, respectively, and two of said sliding stoppers are disposed corresponding to said two fixing wedges, respectively.

4. The elevator braking apparatus of claim 2, further comprising a roller set between the first ramp and the second ramp, the roller set including at least two rollers of the same size disposed side-by-side.

5. The elevator braking apparatus according to claim 2, further comprising a guide side plate and a guide bottom plate, wherein a folded edge is formed on one side of the guide side plate, the slide stopper is provided with a limit groove, a side of the guide side plate, which is away from the folded edge, is fixed to the fixed wedge, and the folded edge of the guide side plate is fitted into the limit groove; the guide bottom plate is provided with a guide hole, the guide bottom plate is fixed on the base, and the fixed wedge block penetrates through the guide hole to be connected with the base.

6. The elevator braking apparatus according to claim 2, wherein the sliding braking member contacts and compresses the elastic expansion member when the sliding braking member slides along the second slope to a certain stroke.

7. The elevator braking device according to any one of claims 1 to 6, wherein the auxiliary braking member comprises a lifting nut, a lifting rod and a lifting plate, the lifting nut and the lifting rod are fixedly connected, one end of the lifting rod, which is far away from the lifting nut, is fixedly connected with the lifting plate, and the lifting plate is movably connected with the sliding braking member.

8. The elevator braking apparatus according to any one of claims 1 to 6, wherein the housing is further provided with support plates located at both sides of the housing and mounting portions located at the top and bottom of the housing.

9. The elevator braking apparatus of any of claims 1 to 6, further comprising a support stud, one end of the support stud supporting the enclosure.

10. Elevator arrangement, characterized in that it comprises guide rails, a car which is lifted and lowered along the guide rails under the traction of a haul rope, and an elevator braking device according to any of claims 1-9, which elevator braking device is fixedly mounted to the car, the guide rails being located in the guide rail grooves of the elevator braking device.

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