CN111285218A

CN111285218A - Elevator anti-falling protection device

Info

Publication number: CN111285218A
Application number: CN202010224345.0A
Authority: CN
Inventors: 赵霄雯; 文涛; 戴立方; 赵科; 李云安; 成维跃; 李雁冰; 彭正; 张振; 解世超
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-06-16
Anticipated expiration: 2040-03-26
Also published as: CN111285218B

Abstract

The utility model provides a protection device that falls is prevented to elevator, includes the well, locates the preceding layer door opening of well and elevator car, the vertical two spinal branch vaulting poles that are equipped with of well inner wall front side, the lower extreme of bracing piece is connected through articulated seat and well inner wall are articulated respectively, the inboard of every support frame is articulated respectively and is connected with two horizontal poles, the horizontal pole position one-to-one of both sides all is equipped with the montant between two horizontal poles of homonymy, the upper and lower both ends of montant correspond the bracing piece one end with the homonymy and articulate. The elevator anti-falling device has the function of preventing personnel and goods from falling into the hoistway from the landing door opening when the elevator normally operates, can be used as the anti-falling device when the hoistway is constructed and overhauled, does not need external power when the elevator operates, and is suitable for being used as the anti-falling protection device of the construction elevator.

Description

Elevator anti-falling protection device

Technical Field

The invention belongs to the field of safety protection of construction elevators, and particularly relates to an anti-falling protection device for an elevator.

Background

Construction elevator is the indispensable perpendicular transport means when the high-rise building construction, its car door of current construction elevator and layer door adopt hand switch's push-and-pull door or fence door more, often the workman prevents weighing down the door because carelessness or drawing save trouble do not in time close when in-service use, the risk of falling from preventing weighing down the door opening exists, in addition in the well need overhaul and when constructing, also need set up anti-falling device in the upper and lower both sides of operation region for safety, need an elevator anti-falling protection device convenient to use.

Disclosure of Invention

The invention provides an elevator anti-falling protection device, which is used for overcoming the defects in the prior art.

The invention is realized by the following technical scheme:

an elevator anti-falling protection device comprises a hoistway, a landing door opening arranged in front of the hoistway and an elevator car, wherein two support rods are vertically arranged on the front side of the inner wall of the hoistway, the lower ends of the support rods are respectively hinged and connected with the inner wall of the hoistway through hinge seats, the inner side of each support frame is respectively hinged and connected with two cross rods, the positions of the cross rods on two sides correspond to each other one by one, a vertical rod is arranged between the two cross rods on the same side, the upper end and the lower end of each vertical rod are respectively hinged and connected with one end, away from the support rods, of the corresponding cross rod on the same side, the support rods, the two connected cross rods and the vertical rods jointly enclose a rectangle, a stopping cable device with an anti-falling function is arranged in the closed rectangle, the support rods, the cross rods, the vertical rods and the stopping, springs are vertically arranged on the outer sides of the supporting rods respectively, the lower ends of the springs are fixedly connected with the lower portions of the corresponding supporting rods respectively through brackets, first cables are fixedly connected to the upper ends of the springs respectively, the first cables penetrate through the corresponding first through grooves respectively and are turned backwards through pulleys to be fixedly connected with one ends of the supporting rods far away from the lower cross rods on the same side, two second through grooves are formed in the front wall of the hoistway, guide double pulleys are mounted in the second through grooves respectively through wheel carriers, a rotating shaft is transversely arranged on the outer wall of the hoistway above the opening of the landing door, two ends of the rotating shaft are fixedly mounted on the outer wall of the hoistway respectively through bearing seats, cable winding rollers are arranged on two sides of the periphery of the rotating shaft respectively, second cables are fixedly connected to one sides of the upper ends of the supporting rods facing the second through grooves respectively, the second cables penetrate through the corresponding second through grooves respectively and are wound, the front of the elevator car is fixedly provided with a hexagonal frame.

According to the elevator anti-falling protection device, the arrester wire device is a safety net woven by a plurality of strands of nylon ropes in a staggered mode, and the periphery of the safety net is fixedly connected with the corresponding transverse rods, the corresponding vertical rods and the corresponding supporting rods respectively.

According to the elevator anti-falling protection device, the spring force of the spring is equal to the sum of the dead weight of the cross rod, the vertical rod and the safety net on the same side and the downward pulling force of the first cable rope.

According to the elevator anti-falling protection device, the opposite sides of the two vertical rods are respectively and fixedly provided with the plurality of magnets, the magnets on the two vertical rods are respectively in one-to-one correspondence and mutually attracted, and the attraction force when the magnets on the two sides are mutually attracted is not less than 100 kg.

As above, the elevator anti-falling protection device comprises a motor, the motor is fixedly mounted on the outer wall of the hoistway above the rotating shaft, a first gear is fixedly mounted on an output shaft of the motor, a second gear is fixedly mounted on the periphery of the rotating shaft, the first gear and the second gear are meshed with each other, and the motor is a self-locking motor with a band-type brake.

According to the elevator anti-falling protection device, the front sides of the vertical rods are provided with the plurality of lock catches together, and the lock catches can lock the vertical rods on the two sides together by additionally arranging the padlock.

According to the elevator anti-falling protection device, the connecting rod is arranged on the front side of the lower end of the supporting rod, the two ends of the connecting rod are fixedly connected with the lower end of the corresponding supporting rod respectively, the pedal is transversely arranged in the hexagonal frame, the pedal is located on the lower edge of the car door, and the two ends of the pedal are fixedly connected with the inner wall of the hexagonal frame.

According to the elevator anti-falling protection device, two stop blocks are fixedly mounted behind the inner wall of the hoistway, and the stop blocks are in one-to-one correspondence with the positions of the supporting rods on the front side respectively.

The invention has the advantages that: when the elevator car reaches the current floor from bottom to top during normal operation of the elevator, the lower end pointed cone structure of the hexagonal frame on the front side of the car is in contact with the cross rod above the supporting rod and overturns and jacks the cross rod towards two sides, the anti-falling doors consisting of the supporting rod, the cross rod and the vertical rods can be folded towards two sides to form a parallelogram, when the elevator car is finally stopped and stabilized at the opening position of the current floor, the hexagonal frame can separate the anti-falling doors at two sides to leave the opening position of the floor door for people to pass through, at the moment, the two side edges of the hexagonal frame can support the vertical rods at two sides to prevent the anti-falling doors from being closed, when the elevator car leaves the floor, the anti-falling doors at two sides can be automatically unfolded and closed upwards again under the pulling of the spring and the first cable, when the elevator car reaches the current floor from bottom to top, the conical structure at the top of, after the elevator car leaves the current floor, the anti-falling door can also automatically turn downwards and fold under the action of gravity, so that the functions of automatically opening when the elevator car reaches the current floor and automatically closing when the elevator car does not reach the current floor are realized; when a worker needs to enter a well, firstly, the anti-falling doors are locked together by using the lock catch, then the power device is started to drive the cable winding roller to release the second cable wound on the cable winding roller, the support rod pulled by the second cable can turn backwards and finally is put on a stop block at the rear part of the well, the anti-falling doors can become anti-falling devices transversely separating the well at the moment, and the accident loss of high-altitude falling and high-altitude falling objects is reduced; the elevator anti-falling device has the function of preventing personnel and goods from falling into the hoistway from the landing door opening when the elevator normally operates, can be used as the anti-falling device when the hoistway is constructed and overhauled, does not need external power when the elevator operates, and is suitable for being used as the anti-falling protection device of the construction elevator.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 is a left side view of the present invention; FIG. 3 is an enlarged view of the view A of FIG. 2; FIG. 4 is a schematic view of the use of the open position of the present invention; FIG. 5 is a schematic view of the present invention in use as a fall arrest device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An elevator falling-prevention protection device comprises a hoistway, a landing door opening arranged in front of the hoistway and an elevator car 1, wherein the elevator car 1 is a bearing car of a counterweight rear-mounted traction construction elevator, the front of the elevator car 1 is provided with a car door for entering and exiting, when the elevator car 1 stops at the current floor, the size of the car door opening is consistent with and aligned with that of the landing door opening of the current floor, two support rods 2 are vertically arranged at the front side of the inner wall of the hoistway, the lower ends of the support rods 2 are respectively hinged and connected with the inner wall of the hoistway through hinged seats, the two support rods 2 are respectively symmetrically distributed at two sides of the landing door opening, the inner side of each support frame 2 is respectively hinged and connected with two cross rods 21, the cross rod 21 at the top is 500 mm away from the top end of the support frame 2, so as to ensure that a, the positions of the cross bars 21 on two sides correspond to each other one by one, a vertical bar 22 is arranged between the two cross bars 21 on the same side, the upper end and the lower end of the vertical bar 22 are respectively hinged with one end, far away from the support bar 2, of the corresponding cross bar 21 on the same side, the support bar 2, the two connected cross bars 21 and the vertical bar 22 jointly enclose a rectangle, a blocking cable device with an anti-falling function is arranged in the closed rectangle, the support bar 2, the cross bars 21, the vertical bar 22 and the blocking cable device on the same side jointly form an anti-falling door, the upper part of the support bar 2 is respectively and transversely provided with a first through groove 3, a pulley 31 is respectively arranged in the first through groove 3 through a wheel carrier, the pulley 31 is a cable pulley with a cable groove on the periphery, the diameter of the cable pulley of the pulley 31 is larger than the transverse width of the support bar 2, the upper ends of the springs 32 are respectively and fixedly connected with first cables 33, the first cables 33 respectively penetrate through the corresponding first through grooves 3 and are fixedly connected with one end, far away from the support rod 2, of the lower cross rod 21 at the same side after being turned by the pulleys 31, the front wall of the hoistway is provided with two second through grooves 4, the second through grooves 4 are respectively positioned at the front side of the upper end of each support rod 2, the second through grooves 4 are respectively provided with two guide double pulleys 41 through wheel carriers, the guide double pulleys 41 are structurally characterized in that two cable pulleys which rotate independently are arranged on the same group of wheel carriers in parallel in a bearing mode, cables needing to be guided penetrate between the two cable pulleys to be simultaneously contacted and matched with the peripheries of the two cable pulleys, the cables can be aligned for clamping and guiding on the premise that the pulling transmission of the cables is not influenced, the cables are prevented from being scraped with the inner walls of the second through grooves 4, a rotating shaft 42 is transversely, the both ends of pivot 42 are respectively through bearing frame fixed mounting on the well outer wall, the periphery both sides of pivot 42 are equipped with hawser winding up roller 43 respectively, 2 upper ends of bracing piece are towards the second and pass groove 4 one side fixedly connected with second hawser 44 respectively, second hawser 44 passes corresponding second respectively and passes through groove 4 and twine on homonymy hawser winding up roller 43 behind the direction of direction double pulley 41, the fag end fixed connection of second hawser 44 is in order to avoid the pine to take off on hawser winding up roller 43, pivot 42 drives through power device, the preceding fixed mounting of elevator car 1 has hexagon frame 11, the car door opening of elevator car 1 is located hexagon frame 11 inboardly. When the elevator car 1 arrives at the current floor from top to bottom during normal operation of the elevator, the lower end pointed cone structure of the hexagonal frame 11 at the front side of the car contacts with the cross rod 21 above the support rod 2 and overturns and jacks the cross rod to the two sides below, the anti-falling door consisting of the support rod 2, the cross rod 21 and the vertical rod 22 can be folded to the two sides below to form a parallelogram, when the elevator car 1 finally stops stably at the opening position of the current floor, the anti-falling doors at the two sides can be separated by the hexagonal frame 11 to leave the opening position of the landing door for people to pass through, at the moment, the two sides of the hexagonal frame 11 can abut against the vertical rods 22 at the two sides to prevent the anti-falling doors from being closed, when the elevator car 1 leaves the floor, the anti-falling doors at the two sides can be automatically unfolded and closed upwards again under the pulling of the spring 32 and the first cable 33, when the elevator car 1 arrives at the current floor from bottom to top, after the elevator car 1 leaves the current floor, the anti-falling door can also automatically turn downwards and fold under the action of gravity, so that the functions of automatically opening when the elevator car 1 reaches the current floor and automatically closing when the elevator car 1 does not reach the current floor are realized; when a worker needs to enter a hoistway, firstly, the anti-falling doors are locked together by using the lock catch 25, then the power device is started to drive the cable winding roller 43 to release the second cable 44 wound on the cable winding roller, the support rod 2 pulled by the second cable 44 can turn backwards and finally is put on the stop block 6 at the rear part of the hoistway, and the anti-falling doors can become anti-falling devices transversely separating the hoistway at the moment, so that the accident loss of high-altitude falling and high-altitude falling objects is reduced; the elevator anti-falling device has the function of preventing personnel and goods from falling into the hoistway from the landing door opening when the elevator normally operates, can be used as the anti-falling device when the hoistway is constructed and overhauled, does not need external power when the elevator operates, and is suitable for being used as the anti-falling protection device of the construction elevator.

Specifically, as shown in fig. 1, the arrester wire device described in this embodiment is a safety net 23 woven by interlacing a plurality of nylon ropes, and the periphery of the safety net 23 is fixedly connected to the corresponding cross bar 21, vertical bar 22 and support bar 2. Adopt the safety net 23 that nylon made can effectively play on the one hand and prevent falling the arresting effect, and on the other hand when horizontal pole 21 upset folding downwards, safety net 23 can warp to parallelogram in order to adapt to the displacement of horizontal pole 21 and montant 22, avoids tearing safety net 23 when the elevator opens the door and damages.

Specifically, as shown in fig. 3, the spring force of the spring 32 in this embodiment is equal to the sum of the self weight of the cross bar 21, the vertical bar 22 and the safety net 23 on the same side and the downward pulling force of the first cable 33. When the cross bar 21 is in a horizontal state, the spring force of the spring 32 and the gravity of the falling-prevention door automatically turning and folding downwards form a balanced state, the falling-prevention door can keep the current state still, when the falling-prevention door is turned and folded downwards under the action of external force to form a parallelogram, the first cable 33 serving as the long diagonal line of the parallelogram can be continuously lengthened to pull the cable originally positioned on one side of the spring 32 to one side of the falling-prevention door, the spring 32 is forced to be lengthened, the spring force is increased after the spring 32 is lengthened, after the falling-prevention door loses the external force action, the spring force is larger than the gravity of the falling-prevention door turning downwards, the spring 32 can turn the falling-prevention door upwards and pull the falling-prevention door back to the original position, when the falling-prevention door is turned and folded upwards under the action of external force, the first cable 33 serving as the short diagonal line, after the falling-preventing door loses the external force action, because the spring force is smaller than the gravity of the falling-preventing door which turns and unfolds downwards, the falling-preventing door can turn and unfold downwards again to restore the original position, so that the automatic closing function of the falling-preventing door is realized, and a user needs to adjust the length of each spring 32 according to the actual condition when installing the device so that the spring force meets the requirements.

Further, as shown in fig. 1, a plurality of magnets 24 are respectively and fixedly mounted on opposite sides of the two vertical rods 22, the magnets 24 on the two vertical rods 22 are respectively in one-to-one correspondence and attract each other, and the attraction force when the magnets 24 on the two sides attract each other is not less than 100 kg. The static state and the automatic closing function of the anti-falling door are maintained by only relying on the spring 32, errors are unavoidably existed, the anti-falling doors on two sides are difficult to restore the rectangular state to be closed each time, the magnetic action of the magnet 24 can be utilized to attract each other to be automatically closed within the range of approaching about 100 mm, the stability of the closed state of the two anti-falling doors is maintained, the debugging difficulty of the spring 32 is reduced while the safety and reliability are improved, the suction design of the magnet 24 can avoid the worker from accidentally opening the anti-falling doors over 100 kg, and the neodymium magnet with stronger suction can meet the suction requirement.

Furthermore, as shown in fig. 1, the power device according to this embodiment includes a motor 5, the motor 5 is fixedly mounted on an outer wall of the hoistway above the rotating shaft 42, a first gear 51 is fixedly mounted on an output shaft of the motor 5, a second gear 52 is fixedly mounted on an outer periphery of the rotating shaft 42, the first gear 51 and the second gear 52 are engaged with each other, and the motor 5 is a self-locking motor with an internal contracting brake. When the anti-falling door is used, the motor 5 drives the second gear 52 to rotate through the first gear 51, the second gear 52 drives the rotating shaft 42 and the cable winding rollers 43 on the two sides to rotate, so that the winding and unwinding functions of the second cable 44 are realized, and the internal contracting brake on the motor 5 can automatically lock the output shaft of the internal contracting brake when the motor stops running, so that the internal contracting brake can be prevented from rotating automatically and falling down the anti-falling door to cause danger.

Furthermore, as shown in fig. 1, a plurality of buckles 25 are installed on the front side of the vertical rod 22 in this embodiment, and the buckles 25 can lock the vertical rods 22 on the two sides together by installing padlocks, which is a mature technology in the prior art, and the specific structure and installation method thereof are not described herein again. Can prevent weighing down the door lock with two and can't open together through hasp 25, can lock the landing door opening when the elevator stops and avoid taking place danger on the one hand, on the other hand is when needs switch this device into the well overhauls when preventing the state of falling, prevents weighing down the door in the middle of with two and locks and also can improve overall structure intensity together.

Furthermore, as shown in fig. 4, a connecting rod 26 is disposed at the front side of the lower end of the supporting rod 2 in the embodiment, two ends of the connecting rod 26 are respectively fixedly connected with the lower end of the corresponding supporting rod 2, a pedal 12 is transversely disposed in the hexagonal frame 11, the pedal 12 is located at the lower edge of the car door, and two ends of the pedal are both fixedly connected with the inner wall of the hexagonal frame 11. When the elevator car 1 stops at the current floor, the connecting rod 26 and the pedal 12 can fill the gap between the lower edge of the car door and the opening of the landing door, prevent the feet of workers from accidentally stepping into the gap to cause injury and falling sundries, and the connecting rod 26 can also connect the supporting rods 2 at two sides into a whole to improve the structural strength.

Furthermore, as shown in fig. 5, two stoppers 6 are fixedly mounted on the back of the inner wall of the hoistway according to this embodiment, and the stoppers 6 correspond to the positions of the front support rods 2 one by one. When the bracing piece 2 overturns backward, the upper end of the bracing piece 2 can finally be taken on the top surface of the corresponding stop dog 6, and the stop dog 6 can support the bracing piece 2.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An elevator anti-falling protection device comprises a hoistway, a landing door opening arranged in front of the hoistway and an elevator car (1), and is characterized in that: two supporting rods (2) are vertically arranged on the front side of the inner wall of the well, the lower ends of the supporting rods (2) are respectively hinged with the inner wall of the well through hinged seats, the inner side of each supporting frame (2) is respectively hinged with two cross rods (21), the positions of the cross rods (21) on the two sides correspond to each other one by one, a vertical rod (22) is arranged between the two cross rods (21) on the same side, the upper end and the lower end of the vertical rod (22) are respectively hinged with one end, far away from the supporting rods (2), of the corresponding cross rod (21) on the same side, the supporting rods (2), connected with the two cross rods (21) and the vertical rod (22) on the same side, form a rectangle together, a blocking cable device with a falling prevention function is arranged in the closed rectangle, the supporting rods (2), the cross rods (21), the vertical rods (22) and the blocking, pulleys (31) are respectively installed in the first through grooves (3) through wheel carriers, springs (32) are respectively and vertically arranged on the outer sides of the supporting rods (2), the lower ends of the springs (32) are respectively and fixedly connected with the lower parts of the corresponding supporting rods (2) through brackets, first mooring ropes (33) are respectively and fixedly connected with the upper ends of the springs (32), the first mooring ropes (33) respectively penetrate through the corresponding first through grooves (3) and are changed to be backward through the pulleys (31) and fixedly connected with one ends, far away from the supporting rods (2), of the lower cross rods (21) on the same side, two second through grooves (4) are formed in the front wall of the hoistway, guide double pulleys (41) are respectively installed in the second through grooves (4) through the wheel carriers, a rotating shaft (42) is transversely arranged on the outer wall of the hoistway above an opening of the landing door, two ends of the rotating shaft (42) are respectively and fixedly installed on the outer wall of the, the upper end of the supporting rod (2) is fixedly connected with a second cable (44) towards one side of the second through groove (4), the second cable (44) penetrates through the corresponding second through groove (4) and is wound on a cable winding roll (43) on the same side after being guided by the guide double pulleys (41), the rotating shaft (42) is driven by a power device, and a hexagonal frame (11) is fixedly arranged in front of the elevator car (1).

2. An elevator fall protection device as claimed in claim 1, wherein: the arrester wire device is a safety net (23) woven by a plurality of strands of nylon ropes in a staggered manner, and the periphery of the safety net (23) is fixedly connected with the corresponding transverse rods (21), the corresponding vertical rods (22) and the corresponding supporting rods (2) respectively.

3. An elevator fall protection device as claimed in claim 2, wherein: the spring force of the spring (32) is equal to the sum of the self weight of the transverse rod (21), the vertical rod (22) and the safety net (23) on the same side and the downward pulling force of the first cable (33).

4. An elevator fall protection device as claimed in claim 3, wherein: the opposite sides of the two vertical rods (22) are respectively and fixedly provided with a plurality of magnets (24), the magnets (24) on the two vertical rods (22) are respectively in one-to-one correspondence and mutually attracted, and the attraction force when the magnets (24) on the two sides are mutually attracted is not less than 100 kg.

5. An elevator fall protection device as claimed in claim 1, wherein: the power device include motor (5), fixed mounting has motor (5) on the well outer wall of pivot (42) top, fixed mounting has first gear (51) on the output shaft of motor (5), fixed mounting has second gear (52) on pivot (42) periphery, first gear (51) and second gear (52) intermeshing, motor (5) are the auto-lock motor that has the band-type brake.

6. An elevator fall protection device as claimed in claim 1, wherein: the front side of the vertical rod (22) is provided with a plurality of lock catches (25), and the lock catches (25) can lock the vertical rods (22) on two sides together by additionally arranging a padlock.

7. An elevator fall protection device as claimed in claim 1, wherein: bracing piece (2) lower extreme front side be equipped with connecting rod (26), the both ends of connecting rod (26) respectively with correspond bracing piece (2) lower extreme fixed connection, transversely be equipped with footboard (12) in hexagonal frame (11), footboard (12) are located under the car door along and both ends all with hexagonal frame (11) inner wall fixed connection.

8. An elevator fall protection device as claimed in claim 1, wherein: two stop blocks (6) are fixedly mounted behind the inner wall of the well, and the stop blocks (6) are respectively in one-to-one correspondence with the positions of the supporting rods (2) on the front side.