CN219669874U

CN219669874U - Elevator locking mechanism

Info

Publication number: CN219669874U
Application number: CN202320177422.0U
Authority: CN
Inventors: 葛珺; 冯阳阳; 龚斌; 张怡伟; 陶银兵; 邓耀力
Original assignee: Huzhou Special Equipment Testing And Research Institute Huzhou Elevator Emergency Rescue Command Center
Current assignee: Huzhou Special Equipment Testing And Research Institute Huzhou Elevator Emergency Rescue Command Center
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-09-12
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to the technical field of elevators, in particular to an elevator locking mechanism; the elevator car braking device comprises a braking mechanism arranged at the lower part of an elevator car and a friction mechanism arranged in the braking mechanism, wherein the elastic component receives the greatest pressure when the elevator car falls down, so that the distance between the braking component and a braking groove is the smallest and mutually contacted, the speed of the braking component moving down is slower than the falling speed of the elevator car by virtue of the friction mechanism, the braking groove on the elevator car generates pressure on a braking inclined surface on a braking block, the two braking blocks slide in opposite directions and are finally clamped on a guide column, the elevator car is prevented from continuously falling down, compared with the prior art, the number of reaction rings in the braking process is reduced, and the elevator car can be normally used only by rising when being maintained after falling down; the elevator braking device solves the problems that in the prior art, when an elevator is braked, more parts are needed to be matched, and when the elevator is maintained, the parts are needed to be adjusted relatively more.

Description

Elevator locking mechanism

Technical Field

The utility model relates to the technical field of elevators, in particular to an elevator locking mechanism.

Background

When the elevator is suddenly dropped due to accident, the elevator can be braked urgently through a related device so as to avoid casualties of people, in the prior art, the elevator is braked mainly by using an auxiliary rope which is synchronously lifted with the elevator, when the elevator is suddenly dropped, the auxiliary rope rapidly rotates under the traction of the elevator, so that the auxiliary rope stops moving by triggering the related device through centrifugal force, a pair of wedge-shaped brake blocks arranged at the bottom of the elevator are pulled to clamp a slide rail for braking, but the braking in the mode is realized by the fact that a plurality of parts are required to be matched normally and tightly, so that the fault tolerance is lower, and the relative position of the auxiliary rope and the elevator is required to be adjusted synchronously again during post maintenance, so that the brake is troublesome.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an elevator locking mechanism, which solves the problems that in the prior art, when an elevator is braked, more parts are needed to be matched, and when the elevator is maintained afterwards, the parts are needed to be adjusted relatively more.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an elevator locking mechanism, includes two guide posts of vertical setting, slides between two guide posts and is equipped with the elevator car that is used for carrying the people, and elevator car lower part elasticity is equipped with the brake mechanism that is used for pressing from both sides tight guide post, and brake mechanism is equipped with the friction mechanism of laminating at the guide post surface towards one side elasticity of guide post.

The braking mechanism comprises an elastic component fixed on the outer wall of the elevator car, two braking components symmetrically distributed on two sides of the guide post are arranged at the bottom of the elastic component in a sliding mode, the friction mechanism is arranged on the braking components, a braking inclined surface is arranged on the upper portion of one side, away from the guide post, of the two braking components, and a braking groove matched with the braking inclined surface is formed in the outer wall of the elevator car.

Preferably, the elevator car comprises a car body for carrying people, guide blocks which are connected with the guide posts in a sliding manner are fixed on two sides of the car body, a braking groove is formed in the bottom of the guide blocks and corresponds to the braking inclined plane, and an extrusion inclined plane for extruding the braking inclined plane is arranged on one side, close to the guide posts, of the braking groove.

Preferably, the elastic component comprises two sliding seats fixed on the side wall of the elevator car, a sliding rod for installing the braking component is arranged on the sliding seats in a sliding mode, a limiting block is fixed at the top of the sliding rod, and a supporting spring arranged between the sliding seats and the braking component is sleeved on the sliding rod.

Preferably, the natural length of the support spring is greater than the maximum distance between the base of the carriage and the brake assembly.

Preferably, the brake assembly comprises a brake block used for compressing the guide block, a brake inclined surface is arranged on the upper portion of one side, far away from the guide column, of the brake block, a connecting block used for fixing the sliding rod is fixed on the side face of the brake block, sliding columns which are horizontally arranged are connected to the two connecting blocks in a sliding mode, and limiting plates are fixed at two ends of the sliding columns.

Preferably, the friction mechanism comprises a friction assembly horizontally arranged in the brake assembly in a sliding manner, a detachable mounting plate is fixed on the brake assembly, and a first elastic piece in a compressed state is arranged between the mounting plate and the friction assembly.

Preferably, the friction assembly comprises a mounting block which is arranged in the brake assembly in a sliding manner, a circular mounting groove is formed in one side, close to the guide post, of the mounting block, a roller which rolls on the surface of the guide post is rotatably mounted in the mounting groove, a plurality of saw-tooth-shaped clamping blocks are arranged on an arc-shaped surface in the mounting groove, a plurality of positioning blocks which are arranged in a rotating manner are eccentrically mounted on the roller, clamping parts which are clamped and limited with the clamping blocks are arranged at the end, close to one side of the guide post, of the positioning block, and a second elastic piece is fixed between one end, close to the guide post, of the bottom of the positioning block and the roller.

Compared with the prior art, the utility model provides an elevator locking mechanism, which has the following beneficial effects:

the braking mechanism arranged at the lower part of the elevator car is matched with the friction mechanism arranged in the braking mechanism, the pressure born by the elastic component is maximum when the elevator car falls down, so that the distance between the braking component and the braking groove is minimum and mutually contacted, the falling speed of the braking component is slower than the falling speed of the elevator car by virtue of the friction mechanism, the braking groove on the elevator car generates pressure on the braking inclined plane on the braking block, the two braking blocks slide in opposite directions and finally clamp on the guide post and prevent the elevator car from continuously falling down, compared with the prior art, the device reduces parts related to braking, and can be normally used only by lifting the elevator car when maintaining after falling down, and is more convenient.

The locating piece on the gyro wheel is eccentrically arranged, when the elevator car drops, the rotation speed of the gyro wheel is increased to increase the centrifugal force received by the locating piece, and the clamping part overcomes the elasticity of the first elastic piece and is clamped and limited with the clamping block, so that the gyro wheel is changed into a sliding turntable from a rolling state, the friction force with the guide post is greatly increased, the braking groove and the braking block are rapidly approached and braked, on one hand, the noise during normal movement is reduced, and on the other hand, the braking effect is not influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

fig. 2 is a schematic view of an elevator car of the present utility model;

FIG. 3 is a schematic view of a brake mechanism of the present utility model;

FIG. 4 is a schematic view of a brake assembly of the present utility model;

FIG. 5 is a cross-sectional view of the friction mechanism of the present utility model;

fig. 6 is a cross-sectional view of a friction pack of the present utility model.

In the figure: 1. a guide post; 2. an elevator cage; 21. a carriage body; 22. a guide block; c. extruding the inclined plane; 3. a braking mechanism; 31. an elastic component; 311. a slide; 312. a slide bar; 313. a limiting block; 314. a support spring; 32. a brake assembly; 321. a brake block; 322. a connecting block; 323. a spool; 324. a limiting plate; a. a braking inclined plane; b. a brake groove; 4. a friction mechanism; 41. a friction assembly; 411. a mounting block; 412. a mounting groove; 413. a roller; 414. a clamping block; 415. a positioning block; 416. a clamping part; 417. a second elastic member; 42. a mounting plate; 43. a first elastic member.

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Example 1

Fig. 1-5 show an embodiment of the utility model, in which the braking device on the elevator is improved to brake without the cooperation of related auxiliary ropes, so that the number of parts required to be matched when braking is performed is reduced, the braking fault tolerance is improved, and the elevator can be braked more effectively when falling.

The utility model provides an elevator locking mechanism, including two guide posts 1 of vertical setting, slide between two guide posts 1 and be equipped with the elevator car 2 that is used for carrying the people, elevator car 2 lower part elasticity is equipped with the brake mechanism 3 that is used for pressing from both sides tight guide post 1, brake mechanism 3 is equipped with the friction mechanism 4 of laminating at guide post 1 surface towards one side elasticity of guide post 1, friction mechanism 4 makes brake mechanism 3 and elevator car 2 can produce relative speed difference when the variable speed removes on guide post 1, when elevator car 2 falls, brake mechanism 3 relatively descends the speed slower under the effect of friction mechanism 4, and elevator car 2 relatively descends the speed faster, when elevator car 2 descends the speed that speed exceeded its normal removal, elevator car 2 and brake mechanism 3 cooperate, make brake mechanism 3 work, thereby prevent elevator car 2's whereabouts, the safety of personnel in the protection.

The braking mechanism 3 comprises an elastic component 31 fixed on the outer wall of the elevator car 2, two braking components 32 symmetrically distributed on two sides of the guide post 1 are arranged at the bottom of the elastic component 31 in a sliding manner, the friction mechanism 4 is arranged on the braking components 32, when the elevator descends, the descending speed of the braking components 32 is slower due to the action of the friction mechanism 4, the elastic component 31 is compressed, the relative distance between the two braking components is shortened, when the elevator descends, the acceleration and the speed of the elevator car 2 relative to the normal downward movement of the elevator car are larger, the relative distance between the two braking components is smaller, a braking inclined surface a is arranged at the upper part of one side of the two braking components 32 away from the guide post 1, a braking groove b matched with the braking inclined surface a is arranged at the outer wall of the elevator car 2, when the elevator car 2 descends, the relative distance between the elevator car 2 and the braking components 32 is smaller, the braking inclined surface a contacts with the inner wall of the braking groove b at the moment, the brake groove b which is accelerated to fall is pressed on the brake inclined plane a, so that the brake component 32 is stressed by a force sliding towards the guide post 1, the brake component 32 is pressed on the guide post 1, the friction force of an object is in direct proportion to the pressure between the brake component 32 and the brake groove b, the falling speed of the brake component 32 is further reduced, the falling brake groove b is further pressed on the brake inclined plane a, the friction force of the brake component 32 on the guide post 1 is rapidly increased, finally, the movement is stopped, the elevator car 2 positioned at the top of the elevator car is stopped from falling, the distance between the elevator car 2 and the brake component 32 is smaller than the distance between the elevator car 2 and the brake component 32 in normal movement by forming a difference value between the brake component 32 and the speed of the elevator car 2 in falling, the elevator car has the advantages that a large number of matching elements are reduced, the elevator car is simpler and more effective, the fault tolerance is increased, and only the elevator needs to be moved upwards during later maintenance, so that the elevator car 2 releases the pressure on the brake assembly 32 to enable the elevator car and the brake assembly to be separated from contact, and normal use is recovered, so that the elevator car is simpler and more convenient.

As a preferred technical scheme of the embodiment, the elevator car 2 comprises a car body 21 for carrying people, guide blocks 22 which are in sliding connection with the guide posts 1 are fixed on two sides of the car body 21, a brake groove b is formed in a position corresponding to a brake inclined plane a on the bottom of the guide blocks 22, an extrusion inclined plane c for extruding the brake inclined plane a is arranged on one side, close to the guide posts 1, of the brake groove b, deformation generated by corners at the bottom of the brake groove b in the braking process is reduced by surface contact between the extrusion inclined plane c and the brake inclined plane a, the distance between the corners at the bottom of the brake groove b and the brake inclined plane a is prevented from being increased due to deformation of the corners, and the brake groove b cannot be contacted with the brake inclined plane a when falling down subsequently, so that the reliability of equipment is improved.

As a preferred technical scheme of the embodiment, the elastic component 31 includes two sliding seats 311 fixed on the side wall of the elevator car 2, a sliding rod 312 for installing the braking component 32 is slidably arranged on the sliding seats 311, a limiting block 313 is fixed on the top of the sliding rod 312, a supporting spring 314 arranged between the sliding seat 311 and the braking component 32 is sleeved on the sliding rod 312, in the acceleration moving process of the elevator car 2 during starting, the elastic force of the supporting spring 314 is related to the traction force for accelerating the elevator car 2, the gravity of the braking mechanism 3 and the gravity of the friction mechanism 4, compared with the elevator car 2 in a balanced state, the length variation of the supporting spring 314 is in direct proportion to the difference between the traction force of the elevator car 2 and the gravity sum of the braking mechanism 3 and the friction mechanism 4, in the falling process of the elevator car 2, the traction force of the elevator car is the self gravity, at the moment, the length of the supporting spring 314 is in the shortest length, and the distance between the braking groove b and the braking component 32 is controlled to enable the distance between the elevator car 2 and the distance between the normal moving time and the distance of the braking component 32 during falling, compared with the braking component 32 during normal moving time, and the braking effect of the elevator car 2 can only be achieved when the braking groove b is not in contact with the braking component 32 during falling, and the braking component can be normally pulled.

As a preferred technical solution of this embodiment, the natural length of the supporting spring 314 is greater than the maximum distance between the bottom of the sliding seat 311 and the braking component 32, so that during the normal upward movement of the elevator car 2, the supporting spring 314 is in a natural state or a compressed state, and after the elevator car 2 stops moving to a designated position, the braking component 32 only moves upward by a small distance due to the inertia force thereof, so as to prevent the elastic component 31 from being stretched during the upward movement of the elevator car 2, so that after the elevator car 2 stops, the braking component 32 is prevented from moving upward to contact with the braking groove b and triggering braking under the dual action of the elastic force of the elastic component 31 and the inertia force thereof, thereby influencing the subsequent downward movement of the elevator car 2, and thus improving the stability of the device.

As a preferred technical solution of this embodiment, the brake assembly 32 includes a brake block 321 for pressing the guide block 22, a brake inclined plane a is disposed on an upper portion of the brake block 321 on a side far away from the guide post 1, a connecting block 322 for fixing the slide bar 312 is fixed on a side surface of the brake block 321, two slide posts 323 disposed horizontally are slidably connected on the two connecting blocks 322, limiting plates 324 are fixed on two ends of the slide posts 323, the limiting plates 324 prevent the brake block 321 from falling off from the end of the slide posts 323, and when the brake slot b is pressed on the brake inclined plane a, the two brake blocks 321 are moved along the slide posts 323 in opposite directions so as to be clamped on the guide post 1, thereby forming a braking effect, preventing the elevator car 2 from falling continuously, and protecting safety of personnel inside.

As a preferred technical solution of the present embodiment, the friction mechanism 4 includes a friction assembly 41 that is horizontally slidably disposed in the brake assembly 32, a detachable mounting plate 42 is fixed on the brake assembly 32, and a first elastic member 43 in a compressed state is disposed between the mounting plate 42 and the friction assembly 41, so that a friction force is generated between the friction assembly 41 and the guide post 1 through the first elastic member 43, and the overall movement speed of the friction mechanism 4 is limited, so that when the elevator car 2 falls down, a braking effect is formed between the brake assembly 32 and the elevator car 2 through the friction mechanism 4, and the falling down of the elevator car 2 is prevented.

Example two

Fig. 6 shows an embodiment of the present utility model, in which the friction between the friction member 41 and the guide post 1 is greatly reduced and noise is reduced by further improving the friction member during normal operation of the elevator, and the friction between the friction member and the guide post 1 can be rapidly increased when the elevator falls, so that the brake member 32 can rapidly brake.

Compared with the first embodiment, the second embodiment is more optimized in that: the friction assembly 41 comprises a mounting block 411 which is arranged in the brake assembly 32 in a sliding manner, a circular mounting groove 412 is formed in one side, close to the guide column 1, of the mounting block 411, a roller 413 which is used for rolling on the surface of the guide column 1 is rotatably mounted in the mounting groove 412, when the surface of the guide column 1 rolls normally, the roller 413 can greatly reduce friction force and noise between the roller 413 and the guide column 1, so that the distance between the brake groove b and the brake assembly 32 is larger and more stable, a plurality of saw-tooth clamping blocks 414 are arranged on an arc-shaped surface in the mounting groove 412, a plurality of positioning blocks 415 which are arranged in a rotating manner are eccentrically mounted on the roller 413, a clamping part 416 which is clamped and limited by the clamping blocks 414 is arranged at the end, close to the guide column 1, of the bottom of the positioning blocks 415, and a second elastic piece 417 is fixed between one end, close to the guide column 1, of the roller 413, and the second elastic piece 417 is arranged on the side, and the roller 413.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an elevator locking mechanism, includes two guide posts (1) of vertical setting, slides between two guide posts (1) and is equipped with elevator car (2) that are used for carrying the people, its characterized in that: a braking mechanism (3) for clamping the guide column (1) is elastically arranged at the lower part of the elevator car (2), and a friction mechanism (4) attached to the surface of the guide column (1) is elastically arranged at one side of the braking mechanism (3) facing the guide column (1);

the braking mechanism (3) comprises an elastic component (31) fixed on the outer wall of the elevator car (2), two braking components (32) symmetrically distributed on two sides of the guide column (1) are arranged at the bottom of the elastic component (31) in a sliding mode, the friction mechanism (4) is installed on the braking components (32), a braking inclined surface (a) is arranged on the upper portion of one side, away from the guide column (1), of the two braking components (32), and a braking groove (b) matched with the braking inclined surface (a) is formed in the outer wall of the elevator car (2).

2. The elevator locking mechanism of claim 1, wherein: the elevator car (2) comprises a car body (21) for carrying people, guide blocks (22) which are in sliding connection with the guide posts (1) are fixed on two sides of the car body (21), a braking groove (b) is formed in the bottom of each guide block (22) and corresponds to the corresponding position of each braking inclined surface (a), and an extrusion inclined surface (c) for extruding the corresponding braking inclined surface (a) is arranged on one side, close to the guide posts (1), of each braking groove (b).

3. The elevator locking mechanism of claim 1, wherein: the elastic component (31) is including being fixed in two slide (311) on elevator railway carriage or compartment (2) lateral wall, slides on slide (311) and is equipped with slide bar (312) that are used for installing brake subassembly (32), and slide bar (312) top is fixed with stopper (313), and the cover is equipped with on slide bar (312) and sets up support spring (314) between slide (311) and brake subassembly (32).

4. An elevator locking mechanism as set forth in claim 3, wherein: the natural length of the supporting spring (314) is larger than the maximum distance between the bottom of the sliding seat (311) and the braking component (32).

5. The elevator locking mechanism of claim 1, wherein: the brake assembly (32) comprises brake blocks (321) used for compressing the guide blocks (22), a brake inclined surface (a) is arranged on the upper portion of one side, far away from the guide column (1), of each brake block (321), a connecting block (322) used for fixing the sliding rod (312) is fixed on the side face of each brake block (321), sliding columns (323) horizontally arranged are connected to the two connecting blocks (322) in a sliding mode, and limiting plates (324) are fixed at two ends of each sliding column (323).

6. The elevator locking mechanism of claim 1, wherein: the friction mechanism (4) comprises a friction assembly (41) which is horizontally arranged in the brake assembly (32) in a sliding mode, a detachable mounting plate (42) is fixed on the brake assembly (32), and a first elastic piece (43) which is in a compressed state is arranged between the mounting plate (42) and the friction assembly (41).

7. The elevator locking mechanism of claim 6, wherein: the friction subassembly (41) is including sliding setting up in brake subassembly (32) installation piece (411), circular shape mounting groove (412) have been seted up to one side that installation piece (411) is close to guide post (1), be used for rolling gyro wheel (413) on guide post (1) surface are installed in mounting groove (412) internal rotation, be provided with a plurality of saw-tooth fixture blocks (414) on the arcwall face in mounting groove (412), a plurality of locating pieces (415) that rotate and set up are installed to the eccentric on gyro wheel (413), the locating piece (415) is close to the tip of guide post (1) one side and is equipped with joint portion (416) spacing with fixture block (414) block, be fixed with second elastic component (417) between one end that the locating piece (415) bottom is close to guide post (1) and gyro wheel (413).