Elevator emergency braking mechanism

Abstract

The utility model discloses an emergency braking mechanism for an elevator, which particularly relates to the technical field of elevator braking and comprises a connecting plate, and joint bearings are mounted on two sides of the connecting plate. A mounting frame is mounted on the surface of the knuckle bearing; a groove is formed in one side of the mounting frame; a telescopic block is mounted on the inner wall of the groove; a plurality of triangular grooves are formed in the side wall of the telescopic block; the inclined plates are arranged in the middles of the telescopic blocks, multi-section speed reduction braking of the elevator can be achieved, when the elevator lands, the telescopic blocks on the two sides of the connecting plate can stretch out and draw back, at the moment, triangular grooves are firstly attached to the surfaces of elevator sliding rails, the elevator will be decelerated, then the ends of the telescopic blocks are completely attached to the sliding rails, and the elevator will stop; according to the arrangement, the elevator can be stopped in multiple sections, so that the harm to passengers caused by impact force generated by sudden stopping of the elevator is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator brake technology field more specifically, the utility model relates to an elevator emergency brake mechanism. BACKGROUND

[0002] The elevator emergency brake device is the core system of guaranteeing the safe operation of the elevator, when the elevator appears overspeed, power failure or steel wire rope fracture and other abnormal conditions, the speed abnormality is immediately detected to the speed limiter and the mechanical trigger safety tongs action is made, the jaw block is firmly clamped to the guide rail and the forced braking is realized, these devices completely adopt the mechanical linkage design, can reliably work even if the power system fails, ensure the safety of passengers, regular maintenance and test can guarantee that the emergency brake device is always in the best working state, provide the last guarantee for the safe operation of the elevator,

[0003] The existing publication No. CN112744681B discloses a brake locking mechanism for elevator emergency state, which comprises a brake mechanism, the brake mechanism comprises a long rail, a support shell, a transmission wheel, a centrifugal slider, a sleeve wheel, a locking gear, a locking rack and a brake block; the transmission wheel is provided with a first spring and a sliding groove, the centrifugal slider is in sliding connection with the transmission wheel, the first spring connects the centrifugal slider and the transmission wheel, the inner wall of the sleeve wheel is provided with internal teeth matched with the centrifugal slider; the sleeve wheel is connected with the locking gear, the locking rack is in sliding connection with the support shell, and the locking gear and the locking rack are matched, one end of the brake block is in contact with the long rail, and the locking rack is in contact with the brake block. The brake locking mechanism for elevator emergency state can play an emergency braking role during the process of elevator overspeed acceleration descent, increase the reliability of the elevator, and the entire brake mechanism is realized through a pure mechanical structure, which can also play an emergency braking role in special situations such as elevator power failure or controller failure, and further ensures the safety of the elevator. The inventor found the following problems in the prior art during the implementation of the utility model:

[0004] The existing elevator emergency brake mechanism will cause the elevator car to stop instantaneously when the elevator falls in an emergency due to the excessive instantaneous impact of the safety tongs during braking, and the impact force of this action will cause the passengers in the elevator to fall, collide and be injured;

[0005] Therefore, an elevator emergency brake mechanism is proposed to solve the above problems. Utility model content

[0006] In order to overcome the above defects of the prior art, the utility model provides an elevator emergency brake mechanism to solve the problems in the above background art.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: an elevator emergency brake mechanism, including the connecting plate, the connecting plate both sides install about the joint bearing, the joint bearing surface is equipped with the mounting bracket, the mounting bracket one side is equipped with the recess, the recess inner wall is equipped with the expansion block, the expansion block side wall is equipped with a plurality of triangular groove.

[0008] Preferably, the expansion block side wall is fixed with a rubber pad; the rubber pad is located on the surface of the expansion block close to the end position.

[0009] Preferably, the mounting bracket side wall is fixed with a first rotating shaft; the first rotating shaft surface is rotatably connected with a first support plate; the other end of the first support plate is rotatably connected with a second rotating shaft; the second rotating shaft end is fixed with a fixed plate; the fixed plate inner side wall is equipped with a clamping block.

[0010] Preferably, the second rotating shaft surface is rotatably connected with an antiskid pad; the antiskid pad is located between the fixed plate and the first support plate.

[0011] Preferably, the clamping block bottom is fixed with a scraper; the scraper end is inclined to the clamping block middle part.

[0012] Preferably, the fixed plate end is fixed with a second support plate; the second support plate is located at the fixed plate bottom; the second support plate end is fixed with cleaning cotton; the cleaning cotton is located at the scraper bottom position.

[0013] Preferably, the fixed plate bottom is equipped with a plurality of hydraulic buffers; the hydraulic buffer is located at the fixed plate middle position.

[0014] Preferably, the hydraulic buffer top is fixed with a spring, and the spring top is fixed with the fixed plate.

[0015] The utility model discloses a technical effect and advantage:

[0016] 1, compared with the prior art, the inclined plate is arranged in the expansion block middle part, can realize the multistage speed reduction brake to the elevator, when the elevator falls, the expansion block of connecting plate both sides can be telescopic, at this time, the triangular groove is first attached to the surface of elevator slide rail, at this time, the elevator will reduce speed, then the end of expansion block is completely attached with the slide rail, and the elevator will stop, this setting can make the elevator stop in multiple sections, so as to reduce the impact force of the sudden stop of the elevator on the passengers.

[0017] 2, compared with the prior art, the spring is arranged on the hydraulic buffer top, when the hydraulic buffer contacts the ground, the secondary buffer structure is formed with the hydraulic buffer, first, the spring absorbs part of the impact energy, and then the hydraulic buffer completes the smooth brake, so that the deceleration process is more gentle. DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the telescopic block of this utility model.

[0020] Figure 3 This is a schematic diagram of the clamping block of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the hydraulic buffer of this utility model.

[0022] The attached figures are labeled as follows: 1. Connecting plate; 11. Joint bearing; 12. Mounting bracket; 13. Groove; 14. Telescopic block; 15. Triangular groove; 2. Rubber pad; 3. First rotating shaft; 31. First support plate; 32. Second rotating shaft; 33. Fixing plate; 34. Clamping block; 4. Anti-slip pad; 5. Scraper; 6. Second support plate; 61. Cleaning cotton; 7. Hydraulic buffer; 8. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] As attached Figures 1 to 4 An elevator emergency braking mechanism is shown, including a connecting plate 1, with joint bearings 11 installed on both sides of the connecting plate 1; a mounting bracket 12 is installed on the surface of the joint bearing 11; a groove 13 is provided on one side of the mounting bracket 12; a telescopic block 14 is installed on the inner wall of the groove 13; and multiple triangular grooves 15 are provided on the side wall of the telescopic block 14.

[0026] Specifically, when the elevator falls, the telescopic blocks 14 on both sides of the connecting plate 1 can extend and retract. Since the middle of the telescopic block 14 is a sloping plate wider at the top and narrower at the bottom, the triangular groove 15 first engages with the elevator rail surface, causing the elevator to slow down. Then, the end of the telescopic block 14 fully engages with the rail, braking the elevator to a stop. By providing a sloping plate in the middle of the telescopic block 14, multi-stage deceleration and braking of the elevator can be achieved, reducing the impact force that could cause passengers to fall or collide with the elevator due to sudden braking.

[0027] Example 2

[0028] Based on the embodiment 1, the scheme in embodiment 1 is further refined on the basis of the following specific working mode, such as Figures 1 to 4 As shown in the following description:

[0029] As a preferred embodiment, the side wall of the telescopic block 14 is fixedly connected with the rubber pad 2; it can be attached to the sliding rail first; the rubber pad 2 is located on the surface of the telescopic block 14 near the end position; when the bottom of the telescopic block 14 contacts the sliding rail, the friction force can be increased.

[0030] As a preferred embodiment, the side wall of the mounting bracket 12 is fixedly connected with the first rotating shaft 3; the first support plate 31 can be positioned; the surface of the first rotating shaft 3 is rotatably connected with the first support plate 31; the other end of the first support plate 31 is rotatably connected with the second rotating shaft 32; the end of the second rotating shaft 32 is fixedly connected with the fixed plate 33; the fixed plate 33 can be supported; the inner side wall of the fixed plate 33 is provided with a clamping block 34; it can first contact the elevator sliding rail, control the clamping block 34 to move to the middle of the clamping block 34 surface attached to the elevator sliding rail to reduce speed.

[0031] As a preferred embodiment, the surface of the second rotating shaft 32 is rotatably connected with the anti-skid pad 4; the first support plate 31 and the fixed plate 33 can be separated; the anti-skid pad 4 is located between the fixed plate 33 and the first support plate 31; the noise caused by friction between the middle of the fixed plate 33 and the first support plate 31.

[0032] As a preferred embodiment, the bottom of the clamping block 34 is fixedly connected with the scraper 5; it can first contact the surface of the elevator sliding rail, and the end of the scraper 5 is inclined to the middle of the clamping block 34; when the elevator is running, the scraper 5 can shovel off the rust and dirt generated in the middle of the sliding rail.

[0033] As a preferred embodiment, the end of the fixed plate 33 is fixedly connected with the second support plate 6; the second support plate 6 is located at the bottom of the fixed plate 33; the cleaning cotton 61 is supported; the end of the second support plate 6 is fixedly connected with the cleaning cotton 61; the cleaning cotton 61 can be attached to the surface of the elevator sliding rail to wipe off the dust on its surface.

[0034] As a preferred embodiment, a plurality of hydraulic buffers 7 are installed at the bottom of the fixed plate 33; when the fixed plate 33 contacts the bottom of the elevator shaft, the bottom of the hydraulic buffer 7 is first supported on the bottom of the fixed plate 33; the hydraulic buffer 7 is located at the middle position of the fixed plate 33; the bottom of the hydraulic buffer 7 contacts the ground to slowly contract, providing a buffer effect for the descent of the elevator.

[0035] As a preferred embodiment, the top of the hydraulic buffer 7 is fixedly connected with the spring 8; the buffering effect of the hydraulic buffer 7 can be increased; the top of the spring 8 is fixedly connected with the fixed plate 33; the spring 8 and the hydraulic buffer 7 form a secondary buffering structure, which first absorbs part of the impact energy, and then completes smooth braking by the hydraulic buffer 7, making the deceleration process more linear and comfortable.

[0036] In this embodiment, the hydraulic bumper 7, the non-slip mat 4 and the like are all the commonly known devices purchased directly from the market and known to those skilled in the art, which can be customized or selected according to actual needs. Here, we only use them and do not improve their structure and function. Therefore, we will not go into details.

[0037] The working process of the utility model is as follows: firstly, when the elevator falls, the telescopic blocks 14 on both sides of the connecting plate 1 can be telescoped, because the middle part of the telescopic block 14 is an inclined plate which is wide at the top and narrow at the bottom, at this time, the triangular groove 15 is first attached to the surface of the elevator slide rail, at this time, the elevator will be slowed down, then the end of the telescopic block 14 is provided with a rubber pad 2 to completely attach to the slide rail to increase the friction between the telescopic block 14 and the slide rail, stop the elevator, then the surface of the clamping block 34 contacts the elevator slide rail, the control clamping block 34 moves to the middle part, the surface of the clamping block 34 is attached to the elevator slide rail to clamp the elevator to slow down, improve the slowing down effect of the telescopic block 14, then the non-slip mat 4 can separate the first supporting plate 31 from the fixed plate 33, the cleaning cotton 61 can be first attached to the surface of the elevator slide rail to wipe and adsorb the dust on the surface, then the scraper 5 contacts the surface of the elevator slide rail to remove the rust and sundries generated in the middle part of the slide rail, then when the fixed plate 33 contacts the bottom of the elevator shaft, the bottom of the hydraulic bumper 7 is first supported on the bottom of the fixed plate 33; first, the spring 8 absorbs part of the impact energy, then the hydraulic bumper 7 completes stable braking, so that the deceleration process is more linear and comfortable, the above is the working principle of the elevator emergency braking mechanism.

Claims

1. An elevator emergency brake mechanism comprising a connecting plate (1), characterized in that: The connecting plate (1) is provided with a joint bearing (11) on both sides; the surface of the joint bearing (11) is provided with a mounting rack (12); the side of the mounting rack (12) is provided with a recess (13); the inner wall of the recess (13) is provided with an expansion block (14); the side wall of the expansion block (14) is provided with a plurality of triangular grooves (15).

2. An elevator emergency brake mechanism according to claim 1, characterized in that: The side wall of the expansion block (14) is fixedly connected with a rubber pad (2); the rubber pad (2) is located on the surface of the expansion block (14) close to the end position.

3. An elevator emergency brake mechanism according to claim 1, wherein: The side wall of the mounting rack (12) is fixedly connected with a first rotating shaft (3); the surface of the first rotating shaft (3) is rotatably connected with a first supporting plate (31); the other end of the first supporting plate (31) is rotatably connected with a second rotating shaft (32); the end of the second rotating shaft (32) is fixedly connected with a fixed plate (33); the inner side wall of the fixed plate (33) is provided with a clamping block (34).

4. An elevator emergency brake mechanism according to claim 3, wherein: The surface of the second rotating shaft (32) is rotatably connected with a non-slip pad (4); the non-slip pad (4) is located between the fixed plate (33) and the first supporting plate (31).

5. An elevator emergency brake mechanism according to claim 3, wherein: The bottom of the clamping block (34) is fixedly connected with a scraper (5); the end of the scraper (5) is inclined to the middle part of the clamping block (34).

6. An elevator emergency brake mechanism according to claim 4, wherein: The end of the fixed plate (33) is fixedly connected with a second supporting plate (6); the second supporting plate (6) is located at the bottom of the fixed plate (33); the end of the second supporting plate (6) is fixedly connected with a cleaning cotton (61).

7. An elevator emergency brake mechanism according to claim 6, wherein: The bottom of the fixed plate (33) is provided with a plurality of hydraulic buffers (7); the hydraulic buffers (7) are located at the middle position of the fixed plate (33).

8. An elevator emergency brake mechanism according to claim 7, wherein: The top of the hydraulic buffer (7) is fixedly connected with a spring (8), and the top of the spring (8) is fixedly connected with the fixed plate (33).

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