Elevator car safety device

Abstract

The application relates to an elevator car safety protection device, belonging to the technical field of elevator safety devices, which comprises a limiting block arranged below a car, a telescopic push rod connected between the car and the limiting block, a speed reduction mechanism arranged on the limiting block, the speed reduction mechanism comprising a first speed reduction assembly, the first speed reduction assembly comprising a plurality of abutting columns, the telescopic push rod comprising an electric push rod with a conical push block connected to one end, one end of each abutting column being in abutment with the inclined side wall of the push block, one end of the abutting column being capable of being in abutment with a wall body, a plurality of fixed columns being fixedly connected to the limiting block, a plurality of first rollers being installed on the side wall of the car, a plurality of roller slide rails for placing the first rollers being installed on the wall body, the speed reduction mechanism further comprising a second speed reduction assembly, the second speed reduction assembly comprising a speed reduction pressing block, the speed reduction pressing block being driven by the relative displacement between the car and the limiting block. The application has the effect of protecting the personnel and goods in the car when the car falls accidentally.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator safety devices, and particularly relates to an elevator car safety protection device. BACKGROUND

[0002] With the gradual improvement of the quality of life, more and more people gather in cities. However, due to the limited ground area in the city, the height of the current city buildings is gradually increasing. In order to facilitate the personnel in and out of the high-rise, the inside of the residential building or the inside of some office building is generally equipped with a car elevator.

[0003] The car is the main load-bearing part for carrying people and goods. During the movement of the car, whether the operation is stable is crucial to the people and goods inside the car. Therefore, when the elevator accidentally slides down, due to the large gravity of the car, an external safety device is needed to limit the position of the car, thereby reducing the risk of the people inside the car being hit by the ground when the car falls.

[0004] The current elevator safety device is mostly arranged below the car, and the safety device is provided with a plug rod. When the car falls quickly, the plug rod is inserted into the hole in the side wall of the elevator shaft, thereby fixing the position of the car. However, since the position at which the elevator car starts to fall is uncertain, and the speed of the car falling is fast, it is difficult for the plug rod to be inserted into the hole in the side wall of the elevator shaft at the first time after being stretched out, thereby making it difficult to fix the position of the car. SUMMARY

[0005] In order to protect the people and goods inside the car when the car accidentally falls, the present application provides an elevator car safety protection device.

[0006] The elevator car safety protection device provided by the present application adopts the following technical scheme:

[0007] The utility model provides an elevator car safety protection device, including the limit block who sets up below the car, be connected with the telescopic push rod between the car and the limit block, the limit block is equipped with deceleration mechanism still, the deceleration mechanism includes first deceleration component, first deceleration component includes a plurality of and the moving direction of limit block is set up to the angle of abutment column, telescopic push rod includes the electric push rod in the limit block inside, one end of electric push rod is connected with the conical push block, one end of each abutment column is slidably inserted to the limit block inside and one end is abutted with the inclined side wall of push block, the end of abutment column away from push block can be abutted with the wall of one side of car, a plurality of fixed column are fixedly connected on the limit block, a plurality of first gyro wheel are installed on the side wall of car, and the gyro wheel slide rail for first gyro wheel is installed on the wall opposite to car and is placed and rolls abutment, the deceleration mechanism still includes second deceleration component, second deceleration component includes the deceleration pressure block for abutting with first gyro wheel so that first gyro wheel is difficult to rotate, and the relative displacement between limit block and car drives deceleration pressure block.

[0008] By adopting the above technical scheme, when the elevator car falls accidentally, the electric push rod is opened, the electric push rod drives the push block to move, the push block drives a plurality of abutment columns to move to the side close to the wall in the moving process, so that one end of the abutment column is abutted with the wall to slow down the falling speed of the limit block, and then the car moves to the side close to the limit block, so as to drive the deceleration pressure block to press the first gyro wheel, so that the first gyro wheel on the elevator side wall is difficult to continue to rotate and slide abutment with the side wall of the gyro wheel slide rail, thereby realizing the deceleration operation of the elevator car, thereby reducing the damage phenomenon of the personnel and goods in the car caused by the rapid falling of the elevator.

[0009] Optionally, the first gyro wheel is provided as a plurality of groups, and each two adjacent first gyro wheels are provided as a group and are horizontally opposite to each other, each deceleration pressure block is arranged above the side close to each other of a group of first gyro wheels, and the lower end of each deceleration pressure block is fixedly connected with a connecting rope, and the connecting rope is pulled by the relative movement between the car and the limit block.

[0010] By adopting the above technical scheme, when the car moves to the side close to the limit block, the connecting rope abuts against a plurality of first gyro wheels, so that the plurality of first gyro wheels can stop rotating, thereby realizing the abutment of the plurality of first gyro wheels with the inner wall of the gyro wheel slide rail on one side, and realizing the stable deceleration process of the car.

[0011] Optionally, the second deceleration assembly further comprises a plurality of lifting racks fixedly connected to the bottom of the car, one side of each of the lifting racks is engaged with a rotating gear, a rotating shaft is fixedly provided on each of the rotating gears, a plurality of winding drums are fixedly sleeved on each of the rotating shafts, the number of the winding drums on each of the rotating shafts is the same as and one-to-one corresponds to the number of the connecting ropes on the adjacent side wall of the car, and one end of each of the connecting ropes away from the deceleration block is wound on the corresponding winding drum and is fixedly connected with the winding drum.

[0012] By adopting the above technical scheme, in the process that the car moves to the side close to the limiting block, the car drives the plurality of lifting racks to move, each of the lifting racks drives the rotating gear on one side to rotate, the rotating gear drives the rotating shaft and the winding drum fixedly connected to the rotating shaft to rotate, the winding drum collects the connecting ropes in the process of rotating, so that the deceleration block is abutted against the first rollers on both sides through the connecting ropes, thereby realizing the limitation of the rotating process of the first rollers, and making each of the first rollers abut against the side wall of the roller slide rail in the process that the car falls, so that the falling speed of the car can be slowed down.

[0013] Optionally, one end of each of the abutment columns close to the wall is fixedly connected with a deceleration block, and one side of each of the walls close to the deceleration block is further fixedly connected with a deceleration plate capable of abutting against the deceleration block.

[0014] By adopting the above technical scheme, when the abutment column moves to the side close to the wall, the abutment column drives the deceleration block to abut against the deceleration plate connected to the side wall of the wall, so that the limiting block realizes the deceleration effect through the abutment between the deceleration block and the deceleration plate in the process of falling, and the abrasion of the wall on one side of the car in the process of decelerating the limiting block is also reduced.

[0015] Optionally, the limiting block is further provided with a stopping assembly for fixing the position of the limiting block.

[0016] By adopting the above technical scheme, the limiting block and the car can be fixed to a certain position due to the existence of the stopping assembly, thereby facilitating the subsequent rescue operation of the personnel and goods in the car.

[0017] Optionally, the stopping assembly comprises a mounting block fixedly connected to the limiting block on the side close to the car, a driving rod is slidingly inserted into the mounting block, a baffle is fixedly connected to the end of the driving rod inserted into the mounting block, a pressure push spring is arranged on the side of the mounting block away from the wall and close to the baffle, a stopping plate is arranged on the side of the baffle away from the pressure push spring, and a plurality of insertion holes for the stopping plate are arranged on the side of the wall close to the stopping plate and spaced apart in the vertical direction.

[0018] By adopting the above technical scheme, in the process of the car falling, the car drives the plurality of driving rods to move downward, the driving rods drive the baffle to move in the process of moving, the baffle moves downward so as to no longer separate the pressure push spring and the stopping plate, and when the stopping plate corresponds to the insertion hole on the side of the wall, under the action of the pressure push spring, one end of the stopping plate can be pushed into the insertion hole, so that the stopping plate is connected to the limiting block and the wall at the same time, thereby realizing the fixation of the position of the limiting block, and when the car continues to move to the side close to the limiting block, the car abuts against the fixed column, thereby realizing the fixation of the position of the car.

[0019] Optionally, the side wall of the stopping plate is fixedly connected with a plurality of anti-back ratchet teeth, and the mounting block is provided with a plurality of anti-back ratchet claws capable of engaging with the anti-back ratchet teeth.

[0020] By adopting the above technical scheme, due to the existence of the anti-back ratchet teeth and the anti-back ratchet claws, when the pressure push spring pushes the stopping plate to be inserted into the insertion hole, because the pushing force of the pressure push spring on the stopping plate is large, when the stopping plate rebounds after being pushed to the hole wall of the insertion hole, the position of the stopping plate can be limited by the clamping of the anti-back ratchet teeth and the anti-back ratchet claws, thereby reducing the phenomenon that the stopping plate rebounds out of the insertion hole after impacting the inner wall of the insertion hole, so that the position between the limiting block and the wall cannot be stably fixed.

[0021] Optionally, the lifting push rod further comprises a telescopic connecting rod fixedly connected to the car, a telescopic connecting barrel is arranged on the outer side of the telescopic connecting rod, one end of the telescopic connecting rod is clamped with the telescopic connecting barrel, one end of the telescopic connecting barrel is inserted into the limiting block and clamped with the inner wall of the limiting block, a pressure spring is connected to one end of the telescopic connecting rod in the telescopic connecting barrel, and the end of the pressure spring away from the telescopic connecting rod is connected with the inner wall of the telescopic connecting barrel.

[0022] By adopting the technical scheme, when the car moves upwards, the car drives the telescopic connecting rod to move upwards, the telescopic connecting rod drives the telescopic connecting cylinder and the limiting block to move upwards; when the car moves downwards, the car pushes the telescopic connecting rod, the telescopic connecting rod pushes the telescopic connecting cylinder and the limiting block to move downwards through the pressure spring, and the downward movement of the limiting block is realized in combination with the gravity of the limiting block itself; when the car moves to the side close to the limiting block, the car exerts pressure on the pressure spring, and the impact force suffered by the personnel and goods in the car when the car abuts against the fixed column on the limiting block can be reduced due to the presence of the pressure spring.

[0023] To sum up, the present application has at least one of the following beneficial technical effects:

[0024] 1. The electric push rod is opened to drive the push block to move in the process of the car falling, the first speed reduction assembly is driven by the push block to reduce the speed of the limiting block, and then the speed of the car is reduced, so that the speed reduction operation in the process of the car falling is realized, and the protection of the personnel and goods in the car is realized;

[0025] 2. When the car moves to the side close to the limiting block, the second limiting assembly drives the rotation of the plurality of first rollers installed on the side wall of the car to be limited, so that the first rollers slide against the side wall of the roller slide rail, and then the speed reduction operation of the car falling is realized, and the protection of the personnel and goods in the car is realized;

[0026] 3. When the car moves to the side close to the limiting block, the stopping assembly limits the position of the limiting block, so that the position of the car is limited by the limiting block, and the subsequent rescue operation of the personnel and goods in the car when the car is out of control is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0028] Figure 2 is a sectional view of the overall structure of the embodiment of the present application.

[0029] Figure 3 is Figure 2 is a partial enlarged schematic diagram of structure A in the embodiment.

[0030] Figure 4 is a schematic diagram of the connection relationship between the second speed reduction assembly and the first roller in the embodiment of the present application.

[0031] Figure 5 is a top view of the overall structure of the embodiment of the present application.

[0032] Figure 6 is Figure 2 is a partial enlarged schematic diagram of structure B in the embodiment.

[0033] Figure 7 is Figure 2 A partial enlarged schematic view of the structure D.

[0034] Figure 8 is Figure 2 A partial enlarged schematic view of the structure D.

[0035] The figure mark explanation: 1, wall; 11, roller slide rail; 12, jack; 2, car; 21, elevator door; 22, first roller; 23, deceleration slide rail; 24, fixed pulley; 25, plugboard slide rail; 3, limit block; 31, transverse slot; 32, first vertical slot; 33, fixed column; 34, second roller; 35, plugboard; 36, second vertical slot; 4, telescopic push rod; 41, push block; 42, electric push rod; 43, telescopic connecting rod; 431, connecting rod positioning block; 44, telescopic connecting cylinder; 441, connecting cylinder positioning block; 45, pressure spring; 5, deceleration mechanism; 51, first deceleration assembly; 511, abutting column; 512, deceleration block; 513, deceleration plate; 52, second deceleration assembly; 521, deceleration pressing block; 5211, deceleration sliding block; 522, lifting rack; 523, rotating gear; 524, rotating shaft; 5241, connecting rod; 525, winding cylinder; 526, connecting rope; 6, stopping assembly; 61, mounting block; 611, lifting groove; 612, stopping groove; 62, driving rod; 63, baffle; 64, pressure push spring; 641, spring push block; 65, stopping plugboard; 651, anti-back ratchet tooth; 66, anti-back pawl. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 8 The present application is further described in detail.

[0037] The present application discloses an elevator car safety protection device, referring to Figure 1 , including three walls 1, three walls 1 form a groove to form a one-side opening elevator shaft. The elevator shaft is provided with a car 2, and the car 2 is provided with an elevator door 21 on one side. The two opposite sidewalls of the car 2 are respectively connected with the adjacent wall 1 sidewall in sliding mode. The lower part of the car 2 is provided with a limit block 3, and the two opposite sidewalls of the limit block 3 are also connected with the adjacent wall 1 sidewall in sliding mode.

[0038] Referring to Figure 2 and Figure 3 , the intermediate position between the limit block 3 and the car 2 is provided with a telescopic push rod 4, which is used to connect the car 2 and the limit block 3, and can drive the limit block 3 to move through the telescopic push rod 4 in the process of moving the car 2.

[0039] The limiting block 3 is further provided with a deceleration mechanism 5. The deceleration mechanism 5 comprises a first deceleration assembly 51. The first deceleration assembly 51 comprises abutting columns 511 which are inserted into two opposite side walls of the limiting block 3. Each abutting column 511 is horizontally arranged. The limiting block 3 is provided with a horizontal moving groove 31 for the abutting columns 511. The limiting block 3 is further provided with a first vertical groove 32 which is connected with the horizontal moving groove 31. The lifting push rod comprises a conical push block 41 which is arranged in the first vertical groove 32. The conical top of the push block 41 is downwardly arranged. One end of each abutting column 511 is inserted into the first vertical groove 32 and abuts against the inclined side wall of the push block 41.

[0040] The upper surface of the push block 41 is further connected with an electric push rod 42. The electric push rod 42 is vertically arranged. One end of the electric push rod 42 which is away from the push block 41 is connected with the bottom side wall of the car 2.

[0041] The limiting block 3 is further provided with four fixed columns 33 which are vertically arranged. When the car 2 moves towards the side which is close to the limiting block 3, the car 2 can first abut against the upper surface of the fixed column 33.

[0042] Referring to Figure 4 , the car 2 is provided with a plurality of groups of first rollers 22 which are arranged on two opposite side walls of the car 2. Each group of first rollers 22 comprises two first rollers 22 which are arranged in parallel. In this embodiment, the number of first rollers 22 arranged on each side wall of the car 2 is four. The four groups of first rollers 22 are arranged in two vertical rows.

[0043] Referring to Figure 5 , the wall body 1 is further provided with two roller sliding rails 11 which are vertically arranged and are fixedly connected with the side wall of the car 2 which is close to each group of first rollers 22. The two roller sliding rails 11 which are fixedly connected with each side wall of the wall body 1 are arranged at a certain distance. The two roller sliding rails 11 which are arranged on each side wall of the wall body 1 are arranged in correspondence with the two vertical rows of first rollers 22 which are arranged on the side wall of the adjacent car 2. Each group of first rollers 22 is arranged in the corresponding roller sliding rail 11. The two first rollers 22 in each group of first rollers 22 abut against the inner wall of the roller sliding rail 11.

[0044] Referring to Figure 4 , the deceleration mechanism 5 further comprises a second deceleration assembly 52. The second deceleration assembly 52 comprises a deceleration pressing block 521 which is arranged above the middle position of each group of two rollers. When the car 2 moves towards the side which is close to the limiting block 3, the car 2 can drive the deceleration pressing block 521 to move downwardly. Thus, each deceleration pressing block 521 abuts against the side wall of the two first rollers 22 below. Thus, each first roller 22 is difficult to rotate.

[0045] In the process of the elevator moving, the limiting block 3 is lifted and moved by the telescopic push rod 4. When the car 2 falls uncontrollably, the electric push rod 42 is opened, the electric push rod 42 drives the push block 41 to move downward, the push block 41 drives the connecting abutting column 511 to move out of the inside of the limiting block 3 along the transverse moving groove 31 in the process of moving downward, and makes one end of each abutting column 511 slide and abut against the side wall of the wall body 1, thereby achieving the deceleration operation of the limiting block 3. When the limiting block 3 decelerates, the car 2 moves to the side close to the limiting block 3, thereby driving the plurality of deceleration pressing blocks 521 to move downward, achieving the abutment of the plurality of first rollers 22, so that each first roller 22 is difficult to continue to rotate, thereby making one side of each first roller 22 abut against the roller sliding rail 11, thereby achieving the deceleration operation of the car 2.

[0046] Through the cooperation of the first deceleration assembly 51, the limiting block 3 and the second deceleration assembly 52, the deceleration operation of the car 2 when the elevator car 2 falls uncontrollably can be achieved, which can protect the safety of the people and goods in the car 2.

[0047] Two groups of second rollers 34 are installed on the two side walls of the limiting block 3 close to the roller sliding rail 11, each group of second rollers 34 is horizontally arranged and has two second rollers 34. The two groups of second rollers 34 on each side wall of the limiting block 3 are correspondingly arranged with the two roller sliding rails 11 on the side wall of the adjacent wall body 1. Each group of second rollers 34 is located inside the corresponding roller sliding rail 11 and abuts against the inner wall of the roller sliding rail 11.

[0048] By installing the second roller 34 on the side wall of the limiting block 3, the movement of the limiting block 3 can be more stable.

[0049] Referring to Figure 6 The second deceleration assembly 52 comprises a plurality of vertically arranged lifting racks 522 fixedly connected to the bottom side wall of the car 2. In the embodiment, the number of lifting racks 522 is two, and the two lifting racks 522 are correspondingly arranged. One side of each lifting rack 522 is engaged with a horizontally arranged rotating gear 523. The middle part of each rotating gear 523 is penetrated and fixedly connected with a rotating shaft 524. Both ends of each rotating shaft 524 are rotatably connected with a connecting rod 5241. Each connecting rod 5241 is vertically arranged, and the end of each connecting rod 5241 away from the rotating shaft 524 is fixedly connected with the upper surface of the limiting block 3.

[0050] One winding drum 525 is fixedly sleeved on each side of each rotating shaft 524. Each winding drum 525 is wound with a connecting rope 526, and one end of each connecting rope 526 is fixedly connected with the winding drum 525.

[0051] The vertical section of each deceleration pressing block 521 is isosceles triangle, and one of the vertices of the deceleration pressing block 521 is arranged downward. When the deceleration pressing block 521 moves downward, the two side walls of the deceleration pressing block 521 can simultaneously abut against the adjacent first rollers 22.

[0052] With reference to Figure 5 Each deceleration pressing block 521 is fixedly connected with a deceleration sliding block 5211 close to one side of the car 2, and the side wall of the car 2 close to each column of deceleration pressing blocks 521 is fixedly connected with a deceleration sliding rail 23 for inserting and moving the deceleration sliding block 5211 in the vertical direction.

[0053] With reference to Figure 4 Each connecting rope 526 corresponds to one column of deceleration pressing blocks 521, and each connecting rope 526 is fixedly connected with the lower ends of the corresponding two deceleration pressing blocks 521.

[0054] Two fixed pulleys 24 are installed below the two side walls of the car 2 where the first rollers 22 are installed, and the two fixed pulleys 24 correspond to the adjacent two connecting ropes 526, and each connecting rope 526 is overlapped on the corresponding fixed pulley 24.

[0055] When the elevator out of control falls, the two lifting racks 522 are driven to move downward, and each lifting rack 522 drives the meshing rotating gear 523 to rotate in the process of moving downward, and the rotating gear 523 drives the rotating shaft 524 to rotate in the process of rotating, and each rotating shaft 524 drives the two winding drums 525 fixedly connected thereto to rotate in the process of rotating, and each winding drum 525 gathers the connecting rope 526 wound thereon in the process of rotating, so that each connecting rope 526 drives the two deceleration pressing blocks 521 connected thereto to move downward, and each deceleration pressing block 521 driven by the connecting rope 526 to move downward abuts against the two first rollers 22 on the sides, so that the two first rollers 22 abutted against are difficult to continue rotating, so that each first roller 22 changes from rolling friction to sliding friction or static friction with the inner wall of the roller sliding rail 11 on one side, so as to realize the deceleration operation of the car 2.

[0056] The deceleration pressing block 521 can abut against the first rollers 22 on the two sides below under the action of gravity, but the action of gravity is weak, so it is not considered in the normal operation process. Or the person skilled in the art can add a tension spring connected above the deceleration pressing block 521, and fix the end of the tension spring away from the deceleration pressing block 521 to the side wall of the deceleration sliding rail 23, so that the deceleration pressing block 521 can not abut against the side wall of the first roller 22 when the elevator normally travels. This scheme should be a reasonable extension of the present scheme, which is not described in detail in the present embodiment.

[0057] With reference to Figure 7Each abutting column 511 is fixedly connected with a deceleration block 512 near one side of the wall body 1, and a plurality of tooth-shaped grooves are formed on the side of each deceleration block 512 away from the abutting column 511. Each wall body 1 is fixedly connected with a vertically arranged deceleration plate 513 near one side of the deceleration block 512, and a plurality of tooth-shaped grooves are also formed on the side of the deceleration plate 513 away from the wall body 1.

[0058] When the two abutting columns 511 are moved to the side close to the wall body 1 under the drive of the electric push rod 42 and the push block 41, the abutting column 511 drives the deceleration block 512 to move to the side close to the wall body 1, and when the side of the deceleration block 512 abuts against the wall body 1, the plurality of tooth-shaped grooves on the side of the deceleration block 512 abut against the deceleration plate 513 on the side of the wall body 1, so that in the process of descending, the tooth-shaped grooves on the side of the deceleration block 512 slide against the tooth-shaped grooves of the deceleration plate 513 on the side of the wall body 1, thereby achieving better deceleration effect on the limiting block 3.

[0059] Referring to Figure 5 , the side of the car 2 away from the elevator door 21 is fixedly connected with a plug-in slide rail 25, the plug-in slide rail 25 is composed of two oppositely arranged L-shaped plates, the short sides of the two L-shaped plates are oppositely arranged and are parallel to the side wall of the car 2, and the sides of the two L-shaped plates close to each other form a sliding area.

[0060] The side of the limiting block 3 close to the plug-in slide rail 25 is fixedly connected with a plug-in plate 35, the plug-in plate 35 is vertically arranged, one end of the plug-in plate 35 away from the limiting block 3 is inserted into the sliding area of the plug-in slide rail 25, and the side wall of the plug-in plate 35 slide abuts against the side wall of the adjacent plug-in slide rail 25.

[0061] Referring to Figure 2 and Figure 8 In this embodiment, the number of the stop components 6 is two, and the two stop components 6 are oppositely arranged on the upper surface of the limiting block 3 close to one of the deceleration plates 513.

[0062] The stop component 6 comprises a mounting block 61 fixedly connected with the upper surface of the limiting block 3, and a lifting groove 611 is formed in the mounting block 61 in the vertical direction. A drive rod 62 is arranged between the mounting block 61 and the lower surface of the car 2, the drive rod 62 is vertically arranged, and a baffle plate 63 is fixedly connected to one end of the drive rod 62 away from the car 2. The baffle plate 63 is located inside the lifting groove 611 and slide abuts against the groove wall of the lifting groove 611. A stop groove 612 is also formed in the mounting block 61 and is horizontally arranged, the stop groove 612 is connected between the inside of the mounting block 61 and the side of the mounting block 61 close to the wall body 1, and the stop groove 612 is connected with the lifting groove 611, and the baffle plate 63 divides the stop groove 612 into two parts.

[0063] The cutting-off groove 612 is provided with a pressure push spring 64 on the side away from the wall body 1. One end of the pressure push spring 64 is fixedly connected to the side of the groove wall of the cutting-off groove 612 away from the baffle 63. The side of the pressure push spring 64 close to the baffle 63 is fixedly connected with a spring push block 641, and the spring push block 641 is in sliding abutment with the inner wall of the cutting-off groove 612. When the pressure push spring 64 is located between the baffle 63 and the groove wall of the cutting-off groove 612, it is in a compressed state. The driving rod 62 and the cutting-off groove 612 are distributed in the length direction of the pressure spring 45.

[0064] The cutting-off groove 612 is provided with a cutting-off plug plate 65 on the side away from the pressure push spring 64. The cutting-off plug plate 65 is in sliding abutment with the inner wall of the cutting-off groove 612. The deceleration plate 513 on one side of the wall body 1 is provided with a plurality of insertion holes 12 on the side close to the wall body 1 in the vertical direction. Each insertion hole 12 is parallel to the length direction of the cutting-off plug plate 65. The end of the cutting-off plug plate 65 away from the spring push block 641 can be inserted into the insertion hole 12 under the pushing of the spring push block 641. When the end of the cutting-off plug plate 65 is inserted into the insertion hole 12, the end of the cutting-off plug plate 65 close to the spring push block 641 can still be located in the cutting-off groove 612.

[0065] When the car 2 falls uncontrollably, the car 2 drives the two driving rods 62 to move downward. The driving rod 62 drives the baffle 63 to move downward in the process of moving downward. The baffle 63 moves downward, so that one side of the spring push block 641 can abut against one side of the cutting-off plug plate 65. Since the pressure push spring 64 is in a compressed state, the pressure push spring 64 can drive the cutting-off plug plate 65 to move outward from the cutting-off groove 612 through the spring push block 641. When the end of the cutting-off plug plate 65 located outside the cutting-off groove 612 corresponds to the insertion hole 12 on the side wall of the wall body 1, the cutting-off plug plate 65 can be inserted into the insertion hole 12, thereby fixing the position of the limiting block 3. When the position of the limiting block 3 is fixed, the lower surface of the car 2 abuts against the upper surface of the fixed column 33, thereby fixing the position of the car 2.

[0066] The lower surface of the side of the cutting-off plug plate 65 close to the spring push block 641 is fixedly connected with a plurality of anti-back ratchet teeth 651, which are arranged along the length direction of the cutting-off plug plate 65. A plurality of anti-back ratchet claws 66 are installed on the inner bottom wall of the cutting-off groove 612. When the cutting-off plug plate 65 moves into the horizontal moving groove 31, the anti-back ratchet claws 66 can be engaged with the anti-back ratchet teeth 651.

[0067] Due to the existence of the anti-back ratchet teeth 651 and the anti-back ratchet claws 66, when the cutting-off plug plate 65 is inserted into the insertion hole 12, the end of the cutting-off plug plate 65 abuts against the inside of the insertion hole 12, and it is difficult to move close to the inside of the horizontal moving groove 31, thereby stably fixing the position between the limiting block 3 and the wall body 1.

[0068] Referring to Figure 3 The middle position of the limiting block 3 is provided with a second vertical slot 36 in the vertical direction opposite to one side of the car 2. The second vertical slot 36 is in communication with the first vertical slot 32. The first vertical slot 32 and the second vertical slot 36 are both cylindrical, and the size of the inner wall of the cross section of the second vertical slot 36 is smaller than that of the first vertical slot 32. The first vertical slot 32 and the second vertical slot 36 are coaxially arranged.

[0069] The telescopic push rod 4 comprises a telescopic connecting rod 43 fixedly connected to the middle position of the side wall of the car 2. The telescopic connecting rod 43 is vertically arranged. A telescopic connecting cylinder 44 is sleeved on the outer side of the end of the telescopic connecting rod 43 away from the car 2. A connecting rod positioning block 431 is fixedly connected to the end of the telescopic connecting rod 43 inside the telescopic connecting cylinder 44. The connecting rod positioning block 431 can abut against the end wall of the telescopic connecting cylinder 44, so that the telescopic connecting rod 43 is difficult to slide out of the telescopic connecting cylinder 44.

[0070] The end of the telescopic connecting cylinder 44 away from the car 2 is inserted into the second vertical slot 36 and extends into the first vertical slot 32. A connecting cylinder positioning block 441 is fixedly connected to the end of the telescopic connecting cylinder 44 extending into the first vertical slot 32. The upper surface of the connecting cylinder positioning block 441 can abut against the end wall of the first vertical slot 32 close to the second vertical slot 36. A pressure spring 45 is fixedly connected to the end of the connecting rod positioning block 431 away from the telescopic connecting rod 43. The end of the pressure spring 45 away from the connecting rod positioning block 431 is fixedly connected to the connecting cylinder positioning block 441. The lower surface of the connecting cylinder positioning block 441 is fixedly connected to the electric push rod 42.

[0071] When the car 2 moves to the side close to the limiting block 3 under the drive of the first deceleration assembly 51, the speed of the car 2 is slowed down under the action of the pressure spring 45, so that when the car 2 contacts the fixed block, the car 2 can be more stable.

[0072] The implementation principle of the elevator car 2 accidental movement safety protection device is that when the car 2 loses control and falls, the electric push rod 42 drives the push block 41 to move downward first. The push block 41 drives the two deceleration blocks 512 to abut against the deceleration plate 513 of the wall body 1 side wall while moving downward, so as to realize the deceleration operation of the limiting block 3. Due to the existence of the fixed column 33, when the car 2 abuts against the fixed column 33, the car 2 can be slowed down.

[0073] When the car 2 moves downward to the side close to the limiting block 3, the two lifting racks 522 can also be driven to move downward, each lifting rack 522 drives two winding drums 525 to rotate, each winding drum 525 rotates while shearing the connected connecting rope 526, so as to realize that each connecting rope 526 connected with the two speed reduction blocks 521 is driven to move downward, so as to realize the abutment of the multiple first rollers 22, so that each first roller 22 is difficult to rotate and abuts against the side wall of the roller slide rail 11 on one side, thereby realizing the speed reduction operation of the car 2.

[0074] When the car 2 moves downward, the two driving rods 62 are simultaneously driven to move downward, so that each pressure push spring 64 can push the one side of the stop plate 65 to the outside of the transverse slot 31, when the stop plate 65 corresponds to the insertion hole 12 on the wall 1, the stop plate 65 can be inserted into the insertion hole 12, thereby realizing the fixation of the position of the limiting block 3, and through the existence of the four fixing columns 33, the position of the limiting block 3 can be fixed to fix the position of the car 2.

[0075] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: all equivalent changes made on the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. An elevator car safety protection device, characterized in that: The system includes a limiting block (3) located below the car (2), a telescopic push rod (4) connecting the car (2) and the limiting block (3), and a deceleration mechanism (5) provided in the limiting block (3). The deceleration mechanism (5) includes a first deceleration component (51), which includes multiple abutment posts (511) arranged at a certain angle to the moving direction of the car (2). The telescopic push rod (4) includes an electric push rod (42) located inside the limiting block (3). One end of the electric push rod (42) is connected to a conical push block (41). One end of each abutment post (511) is slidably inserted into the limiting block (3) and one end abuts against the inclined sidewall of the push block (41). 11) The end away from the push block (41) can abut against the wall (1) on one side of the car (2). Multiple fixed columns (33) are fixedly connected to the limiting block (3). Multiple first rollers (22) are installed on the side wall of the car (2). Multiple roller rails (11) for the first rollers (22) to be placed and rolled against are installed on the wall (1) opposite to the car (2). The deceleration mechanism (5) also includes a second deceleration assembly (52). The second deceleration assembly (52) includes a deceleration pressure block (521) for abutting against the first rollers (22) so that the first rollers (22) are difficult to rotate. The deceleration pressure block (521) is driven by the relative displacement between the car (2) and the limiting block (3). The first roller (22) is configured as a plurality of rollers, and each pair of adjacent first rollers (22) is configured as a group, and the two first rollers (22) in the same group are arranged horizontally opposite each other. Each deceleration block (521) is arranged above one of the groups of first rollers (22) on one side close to each other, and the lower end of each deceleration block (521) is fixedly connected to a connecting rope (526), ​​and the connecting rope (526) is pulled by the relative movement between the car (2) and the limiting block (3). The second deceleration assembly (52) further includes a plurality of lifting racks (522) fixedly connected to the bottom of the car (2). Each lifting rack (522) has a rotating gear (523) meshing on one side. Each rotating gear (523) has a rotating shaft (524) fixedly passing through it. Each rotating shaft (524) has a plurality of winding bobbins (525) fixedly sleeved on it. The number of winding bobbins (525) on each rotating shaft (524) is the same as the number of connecting ropes (526) on the adjacent side wall of the car (2) and they are arranged in a one-to-one correspondence. The end of each connecting rope (526) away from the deceleration block (521) is wound on the corresponding winding bobbin (525) and fixedly connected to the winding bobbin (525).

2. The elevator car safety protection device according to claim 1, characterized in that: Each of the abutting posts (511) is fixedly connected to a deceleration block (512) at one end near the wall (1), and each of the walls (1) is also fixedly connected to a deceleration plate (513) that can abut against the deceleration block (512) on one side.

3. The elevator car safety protection device according to claim 1, characterized in that: The limiting block (3) is also provided with a stop component (6) for fixing the position of the limiting block (3).

4. The elevator car safety protection device according to claim 3, characterized in that: The stopping component (6) includes a mounting block (61) fixedly connected to the side of the limiting block (3) near the car (2). A drive rod (62) is slidably inserted into the mounting block (61). A baffle plate (63) is fixedly connected to one end of the drive rod (62) inserted into the interior of the mounting block (61). A pressure spring (64) is provided inside the mounting block (61) on the side of the baffle plate (63) away from the wall (1). A stop plate (65) is provided on the side of the baffle (63) away from the pressure spring (64). The wall (1) is provided with a plurality of insertion holes (12) spaced vertically on the side near the stop plate (65) for the stop plate (65) to be inserted. When the drive rod (62) drives the baffle (63) to move downward, the pressure spring (64) can insert one end of the stop plate (65) into the insertion hole (12).

5. The elevator car safety protection device according to claim 4, characterized in that: The side wall of the stop plate (65) is fixedly connected with a plurality of anti-return ratchet teeth (651), and the mounting block (61) is equipped with a plurality of anti-return pawls (66) that can engage with the anti-return ratchet teeth (651).

6. The elevator car safety protection device according to claim 1, characterized in that: The telescopic push rod (4) also includes a telescopic connecting rod (43) fixedly connected to the car (2). A telescopic connecting cylinder (44) is sleeved on the outside of the telescopic connecting rod (43). One end of the telescopic connecting rod (43) is engaged with the telescopic connecting cylinder (44). One end of the telescopic connecting cylinder (44) is inserted into the inside of the limiting block (3) and engaged with the inner wall of the limiting block (3). A pressure spring (45) is connected to one end of the telescopic connecting rod (43) inside the telescopic connecting cylinder (44). The end of the pressure spring (45) away from the telescopic connecting rod (43) is connected to the inner wall of the telescopic connecting cylinder (44).

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