CN107298358B - Anti-falling safety device - Google Patents
Anti-falling safety device Download PDFInfo
- Publication number
- CN107298358B CN107298358B CN201710683542.7A CN201710683542A CN107298358B CN 107298358 B CN107298358 B CN 107298358B CN 201710683542 A CN201710683542 A CN 201710683542A CN 107298358 B CN107298358 B CN 107298358B
- Authority
- CN
- China
- Prior art keywords
- safety locking
- locking part
- reset
- rope
- safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/24—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by acting on guide ropes or cables
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a falling protector, and relates to a safety device for an elevator car. The purpose is to provide a safety device that prevents that the car from suddenly falling. The anti-falling safety device comprises a speed limiting part, a safety locking part and a guide steel wire rope (1), wherein the speed limiting part is fixedly arranged on the outer side wall of a lift car (2), the safety locking part comprises a supporting plate (24) fixedly arranged on the outer side wall of the lift car, a wedge-shaped track (44) is arranged on the safety locking part, two clamping blocks (25) are arranged on the wedge-shaped track, the lower end faces of the clamping blocks are propped against a top (26), and the guide steel wire rope is fixedly connected in an elevator shaft along the vertical direction and penetrates through the space between the two clamping blocks.
Description
Technical Field
The present invention relates to a safety device, and in particular to a safety device for an elevator car.
Background
In high-rise buildings, for the convenience of transporting materials or personnel, a lift car capable of moving up and down is usually arranged in a lift shaft, and various modes of up-down movement of the lift car in the lift shaft are realized, wherein one of the modes is that two traction steel wire ropes are vertically arranged in the lift shaft, a power device is arranged on the lift car, and the power device drives the lift car to move upwards or downwards along the traction steel wire ropes so as to finish the work of transporting materials or personnel. In many cases, such as equipment failure or aging, sudden falling accidents occur in the car, and casualties and equipment damage are extremely easy to cause.
Disclosure of Invention
The invention aims to solve the technical problem of providing a falling-preventing safety device capable of preventing a car from suddenly falling.
The invention relates to an anti-falling safety device, which comprises a speed limiting part, a safety locking part and a guiding steel wire rope,
The speed limiting part is fixedly arranged on the outer side wall of the elevator car, the speed limiting part comprises a supporting frame, the supporting frame is fixed on the outer side wall of the elevator car through a first bracket, a first rope wheel and a second rope wheel are arranged on the supporting frame, the first rope wheel is fixedly arranged on a first rope wheel shaft, the first rope wheel shaft is rotatably arranged on the supporting frame, the second rope wheel is rotatably arranged on the supporting frame through a second rope wheel shaft, a first gear is fixedly arranged on the first rope wheel shaft, a second gear is arranged on the second rope wheel shaft, the second gear is rotatably arranged on the supporting frame through a second rope wheel shaft, the first gear is meshed with the second gear, a speed limiting wheel is fixedly arranged on the first rope wheel shaft, two throwing pieces are hinged on the side surface of the speed limiting wheel, the two throwing pieces are respectively a first throwing piece and a second throwing piece, the first throwing piece and the second throwing piece are symmetrically arranged along the center of the side surface of the speed limiting wheel, the throwing end of the first throwing piece is hinged with a first connecting rod, the other end of the first connecting rod is hinged with the withdrawing end of the second throwing piece, the throwing end of the first throwing piece is also connected with a first spring, the other end of the first spring is fixedly connected with the side surface of the speed limiting wheel, the side surface of the speed limiting wheel is also provided with a roller and two eccentric wheels, the roller is rotatably arranged on a first rope wheel shaft, the two eccentric wheels are rotatably arranged on the side surface of the speed limiting wheel, the two eccentric wheels are respectively arranged on two opposite sides of the roller, the withdrawing ends of the two throwing pieces are hinged with a second connecting rod, the other ends of the two second connecting rods are respectively hinged with the two eccentric wheels, the roller is hinged with a third connecting rod, the other end of the third connecting rod is hinged on a binding post plate, the binding post plate is provided with a binding post, the binding post plate is fixedly arranged on a sliding shaft, the sliding shaft is slidably arranged on the supporting frame through a U-shaped frame,
The safety locking part comprises a supporting plate fixedly arranged on the outer side wall of the lift car, a wedge-shaped track with a small upper part and a large lower part is arranged on the supporting plate, two clamping blocks capable of sliding along the wedge-shaped track are arranged on the wedge-shaped track, the lower end face of each clamping block abuts against a plug, a push rod is fixedly connected below the plug, the push rod penetrates through a base, clearance fit is arranged between the push rod and the base, a second spring is sleeved on the push rod and is arranged between the plug and the base, a baffle is fixedly arranged on the supporting plate, one side face of the baffle is attached to the plug, a T-shaped frame is fixedly arranged on the other side face of the baffle, a baffle column is inserted on the T-shaped frame, one end of the baffle column penetrates through the baffle, the other end of the baffle column penetrates through the T-shaped frame, a third spring is sleeved on the baffle column between the T-shaped frame and the baffle, one end of the third spring abuts against the T-shaped frame, the other end of the third spring is fixedly connected to the baffle column,
The binding post is connected with a brake cable, the other end of the brake cable is connected with one end of a baffle post penetrating through the T-shaped frame,
The guide steel wire rope is fixedly connected in the elevator shaft along the vertical direction, and penetrates through the space between the two clamping blocks.
The anti-falling safety device is characterized in that a limit switch is arranged on the supporting plate, and the limit switch can be triggered when the top moves upwards relative to the supporting plate.
The anti-falling safety device disclosed by the invention is characterized in that rollers are paved on the track surface of the wedge-shaped track, strip-shaped guide holes are formed in the side wall of the wedge-shaped track, and guide posts matched with the strip-shaped guide holes are fixedly arranged on the clamping blocks.
The invention relates to an anti-falling safety device, wherein four safety locking parts are arranged on two opposite outer side walls of a lift car, two safety locking parts on one outer side wall are respectively a first safety locking part and a second safety locking part, two safety locking parts on the other outer side wall are respectively a third safety locking part and a fourth safety locking part, the second safety locking part is positioned under the first safety locking part, the fourth safety locking part is positioned under the third safety locking part, and two third rope pulleys which are horizontally arranged and are mutually attached are respectively rotatably arranged on a supporting plate between the first safety locking part and the second safety locking part and between the third safety locking part and the fourth safety locking part; the two guide steel wire ropes are respectively a first guide steel wire rope and a second guide steel wire rope, the first guide steel wire rope passes through the space between the two clamping blocks of the first safety locking component and the space between the two clamping blocks of the second safety locking component, the first guide steel wire rope also passes through the space between the two third rope sheaves between the first safety locking component and the second safety locking component, the second guide steel wire rope passes through the space between the two clamping blocks of the third safety locking component and the space between the two clamping blocks of the fourth safety locking component, and the second guide steel wire rope also passes through the space between the two third rope sheaves between the third safety locking component and the fourth safety locking component; the wiring posts are provided with four wiring posts, each wiring post is connected with a brake cable, and the four brake cables are respectively connected with the blocking posts in the first safety locking part, the second safety locking part, the third safety locking part and the fourth safety locking part.
The invention discloses an anti-falling safety device, which comprises two reset devices, wherein each reset device comprises a reset base and a reset pull rod, the reset pull rods penetrate through the reset base, reset springs are sleeved on the reset pull rods, the lower ends of the reset springs are fixedly connected to the reset base, the upper ends of the reset springs are fixedly connected to the reset pull rods, the two reset devices are respectively a first reset device and a second reset device, the first reset device is matched with a first safety locking part and a second safety locking part, the reset base in the first reset device is fixed on a supporting plate of the first safety locking part and a supporting plate of the second safety locking part, the second reset device is matched with a third safety locking part and a fourth safety locking part, the reset pull rods in the first reset device are respectively fixedly connected with ejector rods in the first safety locking part and the second safety locking part through two connecting cross rods, and the reset pull rods in the second reset device are respectively fixedly connected with ejector rods in the third safety locking part and the fourth safety locking part through two connecting cross rods.
The invention discloses an anti-falling safety device, wherein the number of reset bases in each reset device is two, namely an upper reset base and a lower reset base, and the lower ends of reset springs are fixedly connected to the reset bases below.
The invention discloses an anti-falling safety device, wherein a handle is arranged at the lower end of a reset pull rod.
The invention discloses an anti-falling safety device, wherein a top head comprises two vertical plates, the lower ends of the two vertical plates are fixedly connected through a transverse plate, the two vertical plates are respectively abutted against the lower end surfaces of two clamping blocks, and the lower end surfaces of the transverse plates are fixedly connected with a top rod.
The invention relates to an anti-falling safety device, wherein the upper side and the lower side of a first rope pulley are respectively provided with a tensioning wheel, and the upper side and the lower side of a second rope pulley are respectively provided with a tensioning wheel.
The anti-falling safety device is different from the prior art in that when the anti-falling safety device is used, two traction steel wire ropes in an elevator shaft bypass a first rope wheel and a second rope wheel respectively, when a car suddenly falls down, the first rope wheel rotates under the drive of the traction steel wire ropes, a first rope wheel shaft fixed with the first rope wheel shaft rotates, then a speed limiting wheel fixed on the first rope wheel shaft rotates, when the rotating speed reaches a certain value, two throwing pieces arranged on the speed limiting wheel are thrown out simultaneously, at the moment, a second connecting rod hinged to the withdrawing end of the throwing pieces pushes the eccentric wheels to rotate, the large ends of the two eccentric wheels simultaneously approach to and abut against the idler wheels, so that the idler wheels can rotate together along with the speed limiting wheels, a third connecting rod hinged to the idler wheels moves, the third connecting rod drives a binding post plate fixed on the idler wheels to move, and as a brake wire is connected to the binding post, the brake wire is tensioned, the other end of the brake wire pulls the baffle from one side of the baffle to one side of the T-shaped frame, the baffle post is not stopped against a top head, and the two guide blocks move upwards along the guide wire rope, at the moment, and the two guide blocks move upwards along the guide wire rope clamp the two guide blocks when the car clamp the two guide blocks move upwards, so that the two guide wire ropes clamp the elevator car can move upwards, and the guide car clamp the guide wire blocks can move upwards.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of the fall arrestor of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a top view of the fall arrestor of the present invention;
FIG. 4 is a left side view of the fall arrestor of the present invention;
FIG. 5 is a view in the direction B in FIG. 4;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 7 is a top view of FIG. 5;
fig. 8 is a partial enlarged view at D in fig. 7.
Detailed Description
The invention relates to an anti-falling safety device, which comprises a speed limiting part, a safety locking part and a guiding steel wire rope 1.
As shown in fig. 1 and combined with fig. 2-8, the speed limiting part is fixedly arranged on the outer side wall of the car 2, the speed limiting part comprises a supporting frame 3, the supporting frame 3 is fixedly arranged on the outer side wall of the car 2 through a first bracket 4, a first rope pulley 5 and a second rope pulley 6 are arranged on the supporting frame 3, the first rope pulley 5 is fixedly arranged on a first rope pulley shaft 7, the first rope pulley shaft 7 is rotatably arranged on the supporting frame 3, the second rope pulley 6 is rotatably arranged on the supporting frame 3 through a second rope pulley shaft 8, a first gear 9 is fixedly arranged on the first rope pulley shaft 7, a second gear 10 is arranged on the second rope pulley shaft 8, the second gear 10 is rotatably arranged on the supporting frame 3 through a second rope pulley shaft 8, the first gear 9 is meshed with the second gear 10, a speed limiting pulley 11 is fixedly arranged on the first rope pulley shaft 7, two throwing pieces are hinged on the side surface of the speed limiting pulley 11, the two throwing pieces are respectively a first throwing piece 12 and a second throwing piece 13, the first throwing piece 12 and the second throwing piece 13 are symmetrically arranged along the center of the side surface of the speed limiting wheel 11, the throwing end of the first throwing piece 12 is hinged with a first connecting rod 14, the other end of the first connecting rod 14 is hinged with the withdrawing end of the second throwing piece 13, the throwing end of the first throwing piece 12 is also connected with a first spring 15, the other end of the first spring 15 is fixedly connected with the side surface of the speed limiting wheel 11, the side surface of the speed limiting wheel 11 is also provided with a roller 16 and two eccentric wheels 17, the roller 16 is rotatably arranged on the first rope wheel shaft 7, the two eccentric wheels 17 are rotatably arranged on the side surface of the speed limiting wheel 11, the two eccentric wheels 17 are respectively arranged on two opposite sides of the roller 16, the withdrawing ends of the two throwing pieces are hinged with a second connecting rod 18, the other ends of the two second connecting rods 18 are respectively hinged with the two eccentric wheels 17, the roller 16 is hinged with a third connecting rod 19, the other end of the third connecting rod 19 is hinged with a wiring terminal plate 20, the wiring terminal plate 20 is provided with a wiring terminal 21, the wiring terminal plate 20 is fixedly arranged on a sliding shaft 22, and the sliding shaft 22 is slidably arranged on the supporting frame 3 through a U-shaped frame 23. A sliding bearing is installed between the sliding shaft 22 and the U-shaped frame 23 so that the sliding shaft 22 can slide back and forth along the U-shaped frame 23.
As shown in fig. 6, 8, fig. 6 shows a specific way in which the second rope sheave 6 is rotatably mounted on the support frame 3 via a second rope sheave 8, i.e. the second rope sheave 8 is fixed on the support frame 3, the second rope sheave 6 being rotatably mounted on the second rope sheave 8 via a bearing; fig. 8 shows that the first sheave 5 is fixed on a first sheave shaft 7, the first sheave shaft 7 being rotatably mounted on the support frame 3 via bearings, i.e. the first sheave shaft 7 rotates together with the first sheave 5 when the first sheave 5 rotates.
As shown in fig. 4, the safety locking component comprises a supporting plate 24 fixedly arranged on the outer side wall of the car 2, a wedge-shaped track 44 with a small upper part and a large lower part is arranged on the supporting plate 24, two clamping blocks 25 capable of sliding along the wedge-shaped track 44 are arranged on the wedge-shaped track 44, the lower end face of each clamping block 25 abuts against one jacking head 26, a jacking rod 27 is fixedly connected below each jacking head 26, the jacking rod 27 penetrates through a base 28, the jacking rod 27 is in clearance fit with the base 28, a second spring 29 is sleeved on the jacking rod 27, the second spring 29 is arranged between the jacking heads 26 and the base 28, a baffle 30 is fixedly arranged on the supporting plate 24, one side face of each baffle 30 abuts against the jacking heads 26, a T-shaped frame 31 is fixedly arranged on the other side face of each baffle 30, a baffle column 32 is alternately arranged on each T-shaped frame 31, one end of each baffle column 32 penetrates through each baffle 30, the other end of each baffle column 32 penetrates through each T-shaped frame 31, a third spring 33 is sleeved on each baffle column 31 and each baffle column 32, and each third spring 33 is fixedly connected with one end 33.
Rollers are paved on the track surface of the wedge-shaped track 44, the side wall of the wedge-shaped track 44 is provided with a strip-shaped guide hole 34, and the clamping block 25 is fixedly provided with a guide post matched with the strip-shaped guide hole 34. The rollers on the raceway surface can reduce friction between the clamping blocks 25 and the raceway surface. When the clamping block 25 moves up and down along the wedge-shaped rail 44, the guide posts fixed to the clamping block 25 are positioned in the bar-shaped guide holes 34 on the side walls of the rail and move along the bar-shaped guide holes 34.
The wiring post 21 is connected with a brake cable 35, the other end of the brake cable 35 is connected with one end of a baffle column 32 penetrating through the T-shaped frame 31, the guide steel wire rope 1 is fixedly connected in the elevator shaft along the vertical direction, and the guide steel wire rope 1 penetrates through the space between the two clamping blocks 25.
The anti-falling safety device of the invention is characterized in that the upper side and the lower side of the first rope pulley 5 are respectively provided with a tensioning wheel 36, and the upper side and the lower side of the second rope pulley 6 are respectively provided with a tensioning wheel 36. When the elevator is installed, two traction steel wire ropes 45 in the elevator shaft are respectively wound on the first rope pulley 5 and the second rope pulley 6, and the tensioning wheels 36 positioned on the upper side and the lower side of the first rope pulley 5 and the second rope pulley 6 play a role in tensioning the traction steel wire ropes 45, so that the traction steel wire ropes 45 are tightly attached to the first rope pulley 5 and the second rope pulley 6, and the traction steel wire ropes 45 are prevented from slipping with the first rope pulley 5 and the second rope pulley 6. In order to prevent the traction wire rope 45 from being separated from the wheel grooves of the first and second rope pulleys 5 and 6, L-shaped baffles 37 are respectively arranged at the rims of the first and second rope pulleys, the L-shaped baffles 37 are fixed on the supporting frame 3, and the traction wire rope 45 can stably move along the wheel grooves of the first and second rope pulleys 5 and 6 under the action of the L-shaped baffles 37. When the car 2 descends, the traction steel wire rope 45 drives the speed limiting wheel 11 to rotate, and when the rotating speed of the speed limiting wheel 11 reaches a certain value, the throwing piece arranged on the speed limiting wheel 11 can throw out. Because the first connecting rod 14 is hinged between the throwing end of the first throwing piece 12 and the withdrawing end of the second throwing piece 13, the two throwing pieces can be thrown or withdrawn simultaneously. When the first spring 15 is installed, a pre-tightening tension is set, the larger the pre-tightening tension of the first spring 15 is, the larger the rotating speed of the speed limiting wheel 11 required by throwing out the sheet is, otherwise, the smaller the pre-tightening tension of the first spring 15 is, the smaller the rotating speed of the speed limiting wheel 11 required by throwing out the sheet is. When the rotating speed of the speed limiting wheel 11 is smaller than the throwing-out rotating speed, the first spring 15 can pull the first throwing piece 12 and the second throwing piece 13 back into the speed limiting wheel 11, and a resetting effect is achieved.
The safety device of the invention, wherein the supporting plate 24 is provided with a limit switch 38, and the limit switch 38 can be triggered when the plug 26 moves upwards relative to the supporting plate 24. The limit switch 38 controls the power device on the car 2 to stop working, and prevents the power device from continuously dragging the car 2 up and down to drag and break the guide steel wire rope 1.
The invention relates to an anti-falling safety device, wherein four safety locking parts are arranged, the four safety locking parts are distributed on two opposite outer side walls of a lift car 2, two safety locking parts on one outer side wall are respectively a first safety locking part and a second safety locking part, two safety locking parts on the other outer side wall are respectively a third safety locking part and a fourth safety locking part, the second safety locking part is positioned under the first safety locking part, the fourth safety locking part is positioned under the third safety locking part, and two third rope pulleys 39 which are horizontally arranged and are mutually attached are rotatably arranged on a supporting plate 24 between the first safety locking part and the second safety locking part and between the third safety locking part and the fourth safety locking part; the two guide steel wire ropes 1 are respectively a first guide steel wire rope and a second guide steel wire rope, the first guide steel wire rope passes through the space between the two clamping blocks of the first safety locking component and the space between the two clamping blocks 25 of the second safety locking component, the first guide steel wire rope also passes through the space between the two third rope sheaves 39 positioned between the first safety locking component and the second safety locking component, the second guide steel wire rope passes through the space between the two clamping blocks 25 of the third safety locking component and the space between the two clamping blocks 25 of the fourth safety locking component, and the second guide steel wire rope also passes through the space between the two third rope sheaves 39 positioned between the third safety locking component and the fourth safety locking component; the wiring posts 21 are provided with four wiring posts 21, each wiring post 21 is connected with a brake cable 35, and the four brake cables 35 are respectively connected with the baffle columns 32 in the first safety locking component, the second safety locking component, the third safety locking component and the fourth safety locking component.
The guide wire rope 1 is fixedly connected in the elevator shaft in the vertical direction, and the guide wire rope 1 passes through between the two clamping blocks 25. When the two clamping blocks 25 move to the upper ends of the wedge rails 44, the two clamping blocks 25 can clamp the guide wire rope 1, thereby fixing the entire car 2 to the guide wire rope 1.
As shown in fig. 4, the anti-falling safety device of the invention further comprises two reset devices, each reset device comprises a reset base 40 and a reset pull rod 41, the reset pull rods 41 penetrate through the reset base 40, reset springs 42 are sleeved on the reset pull rods 41, the lower ends of the reset springs 42 are fixedly connected to the reset base 40, the upper ends of the reset springs 42 are fixedly connected to the reset pull rods 41, the two reset devices are respectively a first reset device and a second reset device, the first reset device is matched with a first safety locking part and a second safety locking part, the reset base 40 in the first reset device is fixed on a support plate 24 of the first safety locking part and a support plate 24 of the second safety locking part, the second reset device is matched with a third safety locking part and a fourth safety locking part, the reset base 40 in the second reset device is fixed on the support plate 24 of the third safety locking part and the fourth safety locking part, the reset pull rod 41 in the first reset device is respectively fixedly connected with 27 in the first reset device and the second reset device through two connecting cross rods 43, and the second reset device is fixedly connected with 27 in the fourth safety locking part and the third safety locking part respectively.
The anti-falling safety device comprises an upper reset base 40 and a lower reset base 40, wherein the lower ends of reset springs 42 are fixedly connected to the lower reset base 40. The two reset bases 40 can play a better guiding role on the reset pull rod 41, and the lower end of the reset pull rod 41 is provided with a handle, so that a worker can conveniently pull the reset pull rod 41.
The anti-falling safety device of the invention, wherein the top head 26 comprises two vertical plates, the lower ends of the two vertical plates are fixedly connected through a transverse plate, the two vertical plates respectively prop against the lower end surfaces of the two clamping blocks 25, and the lower end surfaces of the transverse plates are fixedly connected with the top rod 27. In an initial state, i.e., when the clamping block 25 is not moved upward along the wedge-shaped rail 44, the second spring 29 is in a compressed state, and one end of the stopper 32 extends out of the stopper 30 to be located above the lateral plate of the plug 26, preventing upward movement of the plug 26. When the blocking post 32 is pulled back into the blocking plate 30, the blocking post 32 no longer blocks the transverse plate of the plug 26, and the plug 26 can then move upwards under the elastic force of the second spring 29, thereby pushing the clamping block 25 upwards along the wedge-shaped track 44.
The working process of the invention is described below:
Because the structure and the working principle of the four safety locking parts are completely the same, only any one of the safety locking parts is used for illustration. When the car 2 suddenly drops down to a certain speed, the traction steel wire rope 45 drives the first rope pulley 5 and the second rope pulley 6 to rotate, the second rope pulley 6 is arranged to improve the reliability of the elevator car in the use process, so that even if one of the two traction steel wire ropes 45 is broken, the rest one can still drive the first rope pulley 5 and the second rope pulley 6 to rotate, as the first rope pulley 5 can drive the first rope pulley shaft 7 to rotate together, the speed limiting wheel 11 fixed on the first rope pulley shaft 7 also rotates together, two throwing pieces arranged on the speed limiting wheel 11 are thrown out simultaneously, at the moment, the second connecting rod 18 hinged to the withdrawing ends of the throwing pieces pushes the eccentric wheel 17 to rotate, the large ends of the two eccentric wheels 17 simultaneously approach to the roller 16 and abut against the roller 16, the roller 16 can rotate together along with the speed limiting wheel 11, so that the third connecting rod 19 hinged on the roller 16 can move, the third connecting rod 19 drives the plate 20 fixed on the third connecting rod 19, as the binding post 21 is connected with the brake wire 35, and then the brake wire 35 is pulled by the brake wire 35, the other end 35 is pulled by the brake wire 35 to move up to the two wedge-shaped blocks 32, and the two wedge-shaped heads 2 are clamped by the two wedge-shaped brake blocks 26, and the two wedge-shaped brake wire blocks 25 are clamped by the two wedge-shaped brake wire 35, and the two wedge-shaped brake wire rods 2 are clamped by the two wedge-shaped brake wire rods 25, and the two wedge-shaped brake wire ropes 2 are clamped by the two wedge-shaped brake wire ropes 2, and the brake wire rope 2, and the brake wire 2, the brake wire rope 2 can be clamped by the two brake wire. At the same time of upward movement of the top 26, it can trigger the limit switch 38, the limit switch 38 controls the power device of the car 2 to stop running, preventing it from continuing to pull the car 2 up and down to drag the guide wire rope 1.
The unlocking state is as follows: by pulling the reset lever 41 downwards through the handle of the reset lever 41, the reset lever 41 drives the ejector rod 27 to move downwards, the ejector 26 also moves downwards to recompress the second spring 29, the clamping block 25 which is propped against the ejector 26 also moves downwards along the wedge-shaped track 44, at the moment, the clamping block 25 loosens the guide steel wire rope 1, then the speed limiting wheel 11 is rotated, the third connecting rod 19 does not tighten the brake cable 35 any more, and at the moment, the throwing piece is retracted into the speed limiting wheel 11 under the tensile force of the first spring 15. When the jack 26 moves downwards to the original position, the jack is separated from the limit switch 38, the limit switch 38 does not control the power device of the car 2, the brake cable 35 is loosened, the baffle column 32 moves from one side of the T-shaped frame 31 to one side of the baffle 30 under the action of the elastic force of the third spring 33, the end of the baffle column 32 stretches out of the baffle 30 again, the transverse plate of the jack 26 is positioned below the baffle column 32, the handle of the reset pull rod 41 is loosened, the reset pull rod 41 drives the ejector rod 27 to move upwards under the elastic force of the reset spring 42 until the transverse plate of the jack 26 abuts against the baffle column 32, the baffle column 32 prevents the jack 26 from continuing to move upwards, meanwhile, the clamping block 25 is prevented from continuing to move upwards, the clamping block 25 cannot lock the guide wire rope 1, and the whole anti-falling safety device is in an unlocking state.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. An anti-falling safety device, which is characterized in that: comprises a speed limiting part, a safety locking part and a guiding steel wire rope (1),
The speed limiting component is fixedly arranged on the outer side wall of the car (2), the speed limiting component comprises a supporting frame (3), the supporting frame is fixed on the outer side wall of the car through a first bracket (4), a first rope wheel (5) and a second rope wheel (6) are arranged on the supporting frame, the first rope wheel is fixedly arranged on a first rope wheel shaft (7), the first rope wheel shaft is rotatably arranged on the supporting frame, the second rope wheel shaft is rotatably arranged on the supporting frame through a second rope wheel shaft (8), a first gear (9) is fixedly arranged on the first rope wheel shaft, a second gear (10) is arranged on the second rope wheel shaft, the second gear is rotatably arranged on the supporting frame through a second rope wheel shaft, the first gear is meshed with the second gear, a speed limiting wheel (11) is fixedly arranged on the first rope wheel shaft, two throwing pieces are respectively a first throwing piece (12) and a second throwing piece (13) on the side face of the speed limiting wheel, the first throwing piece and the second throwing piece are rotatably arranged on the supporting frame along the second rope wheel shaft, the first eccentric piece is rotatably arranged on the first eccentric piece (16) and the other end of the first eccentric piece is rotatably arranged on the upper end of the first eccentric piece, the first eccentric piece is rotatably connected with the second eccentric piece (16) and the upper end of the first eccentric piece is rotatably arranged on the upper end of the speed limiting wheel (16), the two eccentric wheels are respectively arranged at two opposite sides of the roller, the withdrawing ends of the two throwing pieces are hinged with a second connecting rod (18), the other ends of the two second connecting rods are respectively hinged with the two eccentric wheels, the roller is hinged with a third connecting rod (19), the other end of the third connecting rod is hinged on a binding post plate (20), a binding post (21) is arranged on the binding post plate, the binding post plate is fixedly arranged on a sliding shaft (22), the sliding shaft is slidably arranged on a supporting frame through a U-shaped frame (23),
The safety locking part comprises a supporting plate (24) fixedly arranged on the outer side wall of the lift car, a wedge-shaped track (44) with a small upper part and a large lower part is arranged on the supporting plate, two clamping blocks (25) capable of sliding along the wedge-shaped track are arranged on the wedge-shaped track, the lower end face of each clamping block is propped against a jacking head (26), a jacking rod (27) is fixedly connected below each jacking head, each jacking rod penetrates through a base (28), the jacking rod and the base are in clearance fit, a second spring (29) is sleeved on each jacking rod, the second spring is arranged between each jacking head and each base, a baffle (30) is fixedly arranged on the supporting plate, one side face of each baffle is attached to each jacking head, a T-shaped frame (31) is fixedly arranged on the other side face of each baffle, a baffle post (32) is alternately arranged on each T-shaped frame, one end of each baffle post penetrates through each baffle, a third spring (33) is fixedly connected onto each baffle post between each T-shaped frame and each baffle, one end of the third springs is propped against each T-shaped frame, each third spring is fixedly connected onto each T-shaped frame,
The binding post is connected with a brake cable (35), the other end of the brake cable is connected with one end of a baffle post penetrating through the T-shaped frame,
The guide steel wire rope is fixedly connected in the elevator shaft along the vertical direction, and penetrates through the space between the two clamping blocks.
2. The fall arrest safety device according to claim 1, wherein: a limit switch (38) is arranged on the support plate (24), and can be triggered when the plug (26) moves upwards relative to the support plate.
3. The fall arrest safety device according to claim 2, wherein: the guide rail is characterized in that rollers are paved on the rail surface of the wedge-shaped rail (44), strip-shaped guide holes (34) are formed in the side wall of the wedge-shaped rail, and guide posts matched with the strip-shaped guide holes are fixedly arranged on the clamping blocks (25).
4. A fall arrest safety device according to claim 3, wherein: the four safety locking parts are arranged on two opposite outer side walls of the car (2), the two safety locking parts on one outer side wall are respectively a first safety locking part and a second safety locking part, the two safety locking parts on the other outer side wall are respectively a third safety locking part and a fourth safety locking part, the second safety locking part is positioned under the first safety locking part, the fourth safety locking part is positioned under the third safety locking part, and two third sheaves (39) which are horizontally arranged and are mutually attached are rotatably arranged on a supporting plate (24) between the first safety locking part and the second safety locking part and between the third safety locking part and the fourth safety locking part; the two guide steel wire ropes (1) are respectively a first guide steel wire rope and a second guide steel wire rope, the first guide steel wire rope passes through between two clamping blocks (25) of the first safety locking component and between two clamping blocks of the second safety locking component, the first guide steel wire rope also passes through between two third rope sheaves between the first safety locking component and the second safety locking component, the second guide steel wire rope passes through between two clamping blocks of the third safety locking component and between two clamping blocks of the fourth safety locking component, and the second guide steel wire rope also passes through between two third rope sheaves between the third safety locking component and the fourth safety locking component; the wiring posts are provided with four wiring posts, each wiring post is connected with a brake cable, and the four brake cables are respectively connected with the blocking posts in the first safety locking part, the second safety locking part, the third safety locking part and the fourth safety locking part.
5. The fall arrestor as defined in claim 4, wherein: the automatic reset device comprises a reset base (40) and a reset pull rod (41), wherein the reset pull rod penetrates through the reset base, a reset spring (42) is sleeved on the reset pull rod, the lower end of the reset spring is fixedly connected to the reset base, the upper ends of the reset springs are fixedly connected to the reset pull rod, the two reset devices are respectively a first reset device and a second reset device, the first reset device is matched with a first safety locking part and a second safety locking part, the reset base in the first reset device is fixed to a supporting plate (24) of the first safety locking part and a supporting plate (24) of the second safety locking part, the second reset device is matched with a third safety locking part and a fourth safety locking part, the reset pull rod in the first reset device is fixedly connected with a push rod (27) in the first safety locking part and the second safety locking part respectively through two connecting cross rods (43), and the reset base in the second reset device is also fixedly connected with the push rod in the third safety locking part and the fourth safety locking part respectively through the two connecting cross rods.
6. The fall arrestor as defined in claim 5, wherein: the reset base (40) in each reset device is arranged to be an upper reset base and a lower reset base, and the lower ends of the reset springs (42) are fixedly connected to the reset base below.
7. The fall arrestor as defined in claim 6, wherein: the lower end of the reset pull rod (41) is provided with a handle.
8. The fall arrestor as defined in claim 7, wherein: the top (26) comprises two vertical plates, the lower ends of the two vertical plates are fixedly connected through a transverse plate, the two vertical plates are respectively propped against the lower end faces of the two clamping blocks (25), and the lower end faces of the transverse plates are fixedly connected with the ejector rods (27).
9. The fall arrestor as defined in claim 8, wherein: the upper side and the lower side of the first rope wheel (5) are respectively provided with a tensioning wheel (36), and the upper side and the lower side of the second rope wheel (6) are respectively provided with a tensioning wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683542.7A CN107298358B (en) | 2017-08-11 | 2017-08-11 | Anti-falling safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683542.7A CN107298358B (en) | 2017-08-11 | 2017-08-11 | Anti-falling safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107298358A CN107298358A (en) | 2017-10-27 |
| CN107298358B true CN107298358B (en) | 2024-06-11 |
Family
ID=60133747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710683542.7A Active CN107298358B (en) | 2017-08-11 | 2017-08-11 | Anti-falling safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107298358B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821054B (en) * | 2018-08-27 | 2024-03-19 | 博众精工科技股份有限公司 | Car anti-falling device and car lifting system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397480A (en) * | 2002-08-14 | 2003-02-19 | 宁波欣达电梯配件厂 | Speed-limiting safety jaw |
| CN2542633Y (en) * | 2002-05-17 | 2003-04-02 | 河北东方机械厂 | Two-way speed governors |
| CN201261670Y (en) * | 2008-09-02 | 2009-06-24 | 徐香顺 | Safety tong with speed limiting and anti-falling functions |
| CN104192670A (en) * | 2014-07-29 | 2014-12-10 | 河北东方富达机械有限公司 | High-speed elevator speed limiter |
| CN204355900U (en) * | 2014-12-03 | 2015-05-27 | 福建盛建建筑机械有限公司 | A kind of anti-falling safety device for building hoist |
| CN106006287A (en) * | 2016-07-08 | 2016-10-12 | 东南电梯股份有限公司 | Speed limiter safety clamp lifting mechanism for saving elevator hoistway space |
| CN106927331A (en) * | 2017-04-13 | 2017-07-07 | 台州市中奥特种设备检测技术服务有限公司 | A kind of speed limit anti-drop device for lift transformation |
| CN207258946U (en) * | 2017-08-11 | 2018-04-20 | 河北东方富达机械有限公司 | anti-falling safety device |
-
2017
- 2017-08-11 CN CN201710683542.7A patent/CN107298358B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542633Y (en) * | 2002-05-17 | 2003-04-02 | 河北东方机械厂 | Two-way speed governors |
| CN1397480A (en) * | 2002-08-14 | 2003-02-19 | 宁波欣达电梯配件厂 | Speed-limiting safety jaw |
| CN201261670Y (en) * | 2008-09-02 | 2009-06-24 | 徐香顺 | Safety tong with speed limiting and anti-falling functions |
| CN104192670A (en) * | 2014-07-29 | 2014-12-10 | 河北东方富达机械有限公司 | High-speed elevator speed limiter |
| CN204355900U (en) * | 2014-12-03 | 2015-05-27 | 福建盛建建筑机械有限公司 | A kind of anti-falling safety device for building hoist |
| CN106006287A (en) * | 2016-07-08 | 2016-10-12 | 东南电梯股份有限公司 | Speed limiter safety clamp lifting mechanism for saving elevator hoistway space |
| CN106927331A (en) * | 2017-04-13 | 2017-07-07 | 台州市中奥特种设备检测技术服务有限公司 | A kind of speed limit anti-drop device for lift transformation |
| CN207258946U (en) * | 2017-08-11 | 2018-04-20 | 河北东方富达机械有限公司 | anti-falling safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107298358A (en) | 2017-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20100018809A1 (en) | Elevator arrangement, method and safety structure | |
| CN1199839C (en) | Method for making passenger quickly leave elevator car in case of emergency and equipment | |
| CN107298358B (en) | Anti-falling safety device | |
| KR101783323B1 (en) | Lift falling prevention system | |
| CN113353758B (en) | Anti-drop's elevator car structure | |
| CN207258946U (en) | anti-falling safety device | |
| CN109264533B (en) | A vertical elevator that falls for high building falls | |
| CN109292660B (en) | Manual and electric dual-purpose electric hoist | |
| CN114834993B (en) | Elevator emergency braking mechanism | |
| CN203419655U (en) | Eccentric wheel type instant lifting facility falling-prevention safety device suitable for U-steel guide rail | |
| CN221420333U (en) | Elevator anti-falling device for elevator maintenance | |
| CN113074344A (en) | Anti-falling device for high-pole lamp | |
| KR20050044130A (en) | Apparatus for stopping unloader automatically in emergency | |
| CN110666758A (en) | Maintenance workbench for large wing and horizontal stabilizer of airplane | |
| JP3315312B2 (en) | Tower assembly and dismantling equipment for construction elevators | |
| CN114314453B (en) | Anti-falling lifting device with material fixing function for outer wall construction | |
| CN210790891U (en) | Maintenance workbench for large wing and horizontal stabilizer of airplane | |
| CN117342366A (en) | Elevator out-of-control emergency braking protection device capable of being manually started in car | |
| CN220055944U (en) | Special equipment for elevator installation | |
| CN218664869U (en) | Elevator installation car flat bed blocking device | |
| US6863263B2 (en) | Device for locking the descent of the reel-holder trolley in a fixed column winding apparatus | |
| JP2949408B2 (en) | Fall prevention device for lifting tool with lifting guide post | |
| CN209065243U (en) | A kind of novel elevator elevator structure | |
| CN117865031A (en) | Runner maintenance platform with protection mechanism and method | |
| JPH04292396A (en) | Carrying device for material wood piece collected for erection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |