Elevator shaft anti-falling protection system

Abstract

The invention relates to the technical field of elevator shaft anti-falling protection, and discloses an elevator shaft anti-falling protection system which comprises an anti-falling fixing frame and an anti-falling bearing frame, the anti-falling fixing frame is fixed to the portion, close to one side of an elevator landing door, of a wall through cement screws and used as a bearing connecting component, and the anti-falling bearing frame is fixed to the side, close to the elevator landing door, of the wall through cement screws. A rotating shaft is fixedly arranged on one side of the anti-falling bearing frame, the anti-falling bearing frame is hinged to the anti-falling fixing frame through the rotating shaft, torsional springs are arranged at the hinged positions of the two ends of the rotating shaft, when the anti-falling bearing frame and the anti-falling fixing frame are in a parallel state, the torsional springs are in a force storage state, and an electromagnet is fixedly arranged on the anti-falling fixing frame and used for magnetically attracting and fixing the anti-falling bearing frame. Through the triggering of the spring with strong torsion, the device can be quickly unfolded after the electromagnet with sensitive response is unlocked, and the bearing cloth is quickly unfolded from a folded state to form a large cloth bag through the gravity of the storage plate framework, so that the bearing area is effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of elevator shaft anti-fall protection, in particular to an elevator shaft anti-fall protection system. Background Art

[0002] Combination Figure 1 (Existing technical structure), which includes an elevator traction motor 10 arranged at the top of an elevator shaft 11 for pulling an elevator car 16, and elevator guide rails 15 are symmetrically arranged in the elevator shaft 11, and guide wheels cooperating with the elevator guide rails 15 are arranged on the sides of the elevator car 16 to ensure that the elevator traction motor 10 does not shake during the movement process of the elevator traction motor 10, and also includes an elevator floor door 12 arranged at the elevator stop position in each floor of the building, and the elevator car 16 is aligned with the elevator floor door 12 at the floor position after stopping to facilitate people to enter or leave the elevator car 16, and the elevator floor door 12 is used to close the elevator shaft 11 when the elevator does not stop at the floor to prevent people from accidentally entering and falling; However, the existing elevator floor door structure includes an upper floor door sill strip 13, an elevator floor door 12, and a lower floor door sill strip 14, wherein the opening and locking structure of the elevator floor door 12 and the structure for supporting the weight of the elevator floor door 12 are all arranged above the elevator floor door 12 and cooperate with the upper floor door sill strip 13, that is, the lower floor door sill strip 14 will not bear the weight of the elevator floor door 12, and only a guiding protrusion is provided below the elevator floor door 12 and is arranged in the slide groove of the lower floor door sill strip 14, thereby guiding the lower end of the elevator floor door 12 when the elevator floor door 12 moves horizontally, which results in that the lower part of the elevator floor door 12 is very easy to open after receiving an impact, and a person may intrude into the elevator shaft 11 from the lower part of the elevator floor door 12 and then fall, causing serious injuries; The above hazards are also pointed out in detail in the background technology section of patent publication number (CN106744212A). This case is proposed to reduce the hazards and losses caused by objects or people invading the elevator shaft 11. Summary of the invention

[0003] The present invention solves the technical problem by adopting the following technical solutions: Elevator shaft fall protection system, including; An anti-falling fixing frame, which is fixed to the wall near the elevator door by cement screws and is used as a load-bearing connecting component; An anti-falling load-bearing frame, a rotating shaft is fixedly provided on one side of the anti-falling load-bearing frame and is hinged on the anti-falling fixing frame through the rotating shaft, and torsion springs are arranged at the hinged positions at both ends of the rotating shaft, when the anti-falling load-bearing frame is parallel to the anti-falling fixing frame, the torsion spring is in a force storage state, and an electromagnet is fixedly provided on the anti-falling fixing frame for magnetically fixing the anti-falling load-bearing frame, and the anti-falling load-bearing frame is in a storage state, at this time, the electromagnet is in a power-on state to generate a magnetic attraction force to magnetically fix the anti-falling load-bearing frame, and the torsion spring is in a force storage state, and the electromagnet is powered off after receiving a trigger signal; A receiving cloth, the four sides of which are fixed on the anti-falling load-bearing frame, and when the anti-falling load-bearing frame is unfolded, the receiving cloth forms a cloth bag shape which is open upwards, and a folding storage portion is further provided at the bottom of the receiving cloth, and the folding storage portion is configured to form a flat structure after folding the receiving cloth for easy storage; A cable, the two ends of which are respectively arranged on the anti-falling load-bearing frame and the anti-falling fixing frame, and the cable is configured to be straightened obliquely when the anti-falling load-bearing frame is opened, thereby connecting the anti-falling load-bearing frame and the anti-falling fixing frame, so that the anti-falling load-bearing frame obtains at least two symmetrical traction support points at the far end relative to the anti-falling fixing frame; The electric control system includes a trigger fixed at the lower end of the elevator floor door and a controller for controlling the electromagnet, wherein the controller is wiredly controlled and connected to the controlled component through a wire, and the controller and the trigger are wiredly connected, and the trigger is configured to be triggered by colliding with the lower door sill of the floor door when the elevator floor door leaves the normal moving range of the floor door lower door sill and invades the elevator shaft, and the controller immediately cuts off the power to the electromagnet after receiving the trigger signal, thereby allowing the anti-fall load-bearing frame to unfold, and the controller is wiredly connected to the elevator emergency button or fire protection switch of the adjacent floor, so that it can be triggered at the same time to stop the elevator car in the corresponding elevator shaft.

[0004] In a preferred embodiment, the folding storage portion includes a storage plate frame fixed to the lower end surface of the receiving cloth by sewing or gluing, and a storage plastic plate is fixed on the storage plate frame, and a magnetic armature is fixed at the end of the storage plate frame, and an electromagnet magnetically attracted to the magnetic armature is arranged at the middle position of the four side edges of the anti-falling load-bearing frame. When the receiving cloth is folded and stored and is flattened by the storage plastic plate, the magnetic armature is magnetically attracted to the electromagnet fixed on the anti-falling load-bearing frame and then fixed. When the elevator floor door is invaded, the electromagnet on the anti-falling load-bearing frame and the electromagnet on the anti-falling fixing frame are simultaneously powered off, and the anti-falling load-bearing frame is quickly unfolded under the elastic potential energy of the torsion spring, and the receiving cloth is quickly unfolded under the gravity traction of the storage plate frame.

[0005] In a preferred embodiment, at least two impact buffer devices are symmetrically fixed on the anti-falling bearing frame, wherein one end of the cable is fixedly provided with a limit block and is arranged in a through-hole structure in the anti-falling fixing frame, and the other end is connected to the impact buffer device, and the front side of the anti-falling fixing frame is provided with a cable opening, and two anti-stuck rollers with upper and lower intervals are horizontally rotated in the cable opening, and the cable passes through between the anti-stuck rollers. After being arranged, the concealment of the cable in the storage state can be effectively improved, which is convenient for storage. In addition, after the anti-falling bearing frame is unfolded, it can quickly form an oblique pull state, and the limit block is used to limit the end of the cable to pass through the cable opening to ensure that the end of the cable forms an inseparable connection with the anti-falling fixing frame.

[0006] In a preferred embodiment, a piston block is slidably provided in the impact buffer device, one end of the cable is fixed on the piston block and a spring is provided in the impact buffer device to press against the right end surface of the piston block. When the anti-fall bearing frame is subjected to a falling impact, the spring can absorb part of the impact force through deformation, thereby reducing the damage to the rigid connection between the cable and the anti-fall fixing frame caused by the rigid impact force, and reducing the instantaneous impact caused by the rigid impact force on the rigid connection position of the anti-fall fixing frame and the wall.

[0007] In a preferred embodiment, a compressed gas cylinder is arranged on the anti-falling fixing frame, and an exhaust pipeline connected to the exhaust port of the compressed gas cylinder is arranged inside the anti-falling fixing frame, and the other end of the exhaust pipeline is provided with a threaded pipe joint and led out from any position of the k-surface, an inflatable airbag is arranged on the inner side surface of the receiving cloth, and the inflatable airbag is connected to the threaded pipe joint on the k-surface through a hose with a threaded pipe joint, and a solenoid valve is arranged on the exhaust pipeline of the compressed gas cylinder, and the solenoid valve is controlled by a controller, and when the solenoid valve is opened, compressed air is quickly filled into the inflatable airbag on the inner side of the receiving cloth to form a better protective buffer layer.

[0008] In a preferred embodiment, the inflatable airbag can be bonded by gluing or by gluing matching Velcro to the receiving cloth and the inflatable airbag respectively and then bonding them by Velcro. The design of bonding Velcro is convenient for removing the airbag and replacing it with a new one after use, and the compressed gas cylinder is connected to the anti-fall fixing frame by a threaded sealing structure, which makes it convenient to replace the compressed gas cylinder and saves usage costs.

[0009] In a preferred embodiment, it also includes at least two symmetrically arranged auxiliary load-bearing devices, which are configured on the inner side wall of the elevator shaft. The auxiliary load-bearing devices include a base fixed to the wall by cement screws and a bearing plate hinged on the base. A horizontally arranged limit plate is fixedly arranged below the base. Similarly, torsion springs are provided at both ends of the hinge axis of the bearing plate to make the bearing plate flip open. The auxiliary load-bearing device is in an unopened state for easy storage in the elevator shaft. An electromagnet is also provided on the base, and the electromagnet on the base is uniformly controlled by a controller. After losing the magnetic fixation of the electromagnet, the bearing plate flips ninety degrees and presses on the limit plate to form a support point. The anti-falling bearing frame is mounted on the bearing plate on its side after unfolding. In this way, the auxiliary load-bearing device forms a support position for the far end of the anti-falling bearing frame, further improving the bearing capacity of the anti-falling bearing frame.

[0010] In a preferred embodiment, when the anti-falling load-bearing frame is unfolded as shown in the figure, the downward flipping angle of the anti-falling load-bearing frame does not exceed five degrees after the anti-falling load-bearing frame is impacted again in the unfolded state, and when the anti-falling load-bearing frame is in the rotation limit position, the anti-falling load-bearing frame contacts the bearing plate, and the anti-falling load-bearing frame is supported by the bearing plate to improve safety.

[0011] In a preferred embodiment, the trigger is a push-type electronic switch, which is fixed at the lower end of the elevator floor door and extends into the slide groove of the lower door sill strip of the floor door. It does not contact the lower door sill strip of the floor door when the elevator floor door opens and closes normally. When the elevator floor door is deformed after being impacted, the push-type electronic switch hits the lower door sill strip of the floor door to generate a trigger signal. Alternatively, a laser trigger can also be used.

[0012] In a preferred embodiment, a reserved installation pit is provided on the installation wall of the anti-falling fixing frame and the anti-falling bearing frame, and the device does not intrude into the travel range of the original elevator car at any position in the storage state after installation.

[0013] The advantages and positive effects of the present invention are: 1. When the device is in storage Figure 4The structure shown is relatively flat, which is convenient for installation in the elevator shaft. By drilling corresponding installation pits on the installation wall, the inner wall of the elevator shaft can maintain the same flatness as before installation after the installation of the device, ensuring the safe operation of the elevator structure without unnecessary modification.

[0014] 2. The device is triggered by a strong torsion spring. After the responsive electromagnet is unlocked, it can be quickly unfolded and the receiving cloth 28 can be quickly unfolded from a folded state to form a large cloth bag through the gravity of the storage plate frame 32, which effectively increases the bearing area. The compressed gas cylinder 24, which is also triggered by the solenoid valve, quickly fills the gas into the airbag above the receiving cloth 28 to form a cushion above the receiving cloth 28, which effectively improves the buffering capacity.

[0015] 3. Through the structural design of the cable 23, on the one hand, it can be accommodated in the anti-falling fixed frame 18 when stored, and after the anti-falling load-bearing frame 40 is unfolded, it quickly forms an oblique pulling state to form a supporting traction point for the front end of the anti-falling load-bearing frame 40, thereby ensuring the load-bearing capacity of the anti-falling load-bearing frame 40, and the anti-stuck roller 22 set can ensure the smooth export of the cable 23.

[0016] 4. By setting the impact buffer device 29, the two traction points at the front end of the anti-falling bearing frame 40 have a certain buffering force, which partially releases the impact of falling. This is beneficial to the connection stability between the anti-falling fixing frame 18 and the wall, the structural stability of the anti-falling bearing frame 40 itself, and the skeletal stability of the human body.

[0017] 5. Support the side of the anti-falling load-bearing frame 40 by adding auxiliary load-bearing devices 30 as a redundant safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of an elevator shaft and an elevator in the prior art; Figure 2 The present invention is configured in Figure 1 Schematic diagram of the structure; Figure 3 is a schematic diagram of the structure of the present invention (wherein the auxiliary load bearing device 30 is relatively far away from the anti-falling bearing frame 40, and the device is in an unfolded state); Figure 4 is a schematic diagram of the structure of the present invention (the device is in a stowed state and the impact buffer device 29 and the cable 23 are omitted); Figure 5 is a schematic structural diagram of the auxiliary load bearing device 30 in the present invention; Figure 6 yes Figure 3 A schematic diagram of the internal structure of the middle load-bearing plate 29; Figure 7 It is a schematic diagram of the force stroke position of the anti-falling fixing frame 18, the cable 23, the anti-falling bearing frame 40, and the bearing plate 39 in the present invention.

[0020] Figure 8 It is a side structural schematic diagram of the elevator landing door 12, the lower door sill strip 14 and the trigger assembly in the present invention.

[0021] Markings in the figure: 10. Elevator traction motor; 11. Elevator shaft; 12. Elevator floor door; 13. Floor door upper sill strip; 14. Floor door lower sill strip; 15. Elevator guide rail; 16. Elevator car; 18. Anti-fall fixing frame; 19. Cement screw; 20. Through-hole structure; 21. Cable opening; 22. Anti-stuck roller; 23. Cable; 24. Compressed gas cylinder; 27. Rotating shaft; 28. Receiver cloth; 29. ​​Impact buffer device; 30. Auxiliary load-bearing device; 31. Storage plastic plate; 32. Storage plate frame; 33. Magnetic armature; 34. Electromagnet; 35. Piston block; 36. Spring; 37. Base; 38. Limiting plate; 39. Load-bearing plate; Anti-fall bearing frame, 40. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention. The embodiments of the present invention will be described in further detail with reference to the accompanying drawings: like Figure 1-6 As shown, the elevator shaft fall protection system of the present invention comprises: An anti-falling fixing frame 18, which is fixed to the wall near the elevator door 12 by cement screws 19 and is used as a load-bearing connecting component; The anti-falling load-bearing frame 40 has a rotating shaft 27 fixed on one side of the anti-falling load-bearing frame 40 and is hinged on the anti-falling fixing frame 18 through the rotating shaft 27, and the hinge positions at both ends of the rotating shaft 27 are provided with torsion springs. When the anti-falling load-bearing frame 40 is parallel to the anti-falling fixing frame 18 (such as Figure 4 ) The torsion spring is in a state of storing force, and an electromagnet 34 is fixed on the anti-falling fixing frame 18 for magnetically fixing the anti-falling bearing frame 40, combined with Figure 4 , the anti-falling load-bearing frame 40 is in the storage state. At this time, the electromagnet 34 is in the energized state to generate magnetic attraction to magnetically fix the anti-falling load-bearing frame 40. The torsion spring is in the power storage state. When the electromagnet 34 receives the trigger signal and the power is cut off, the torsion spring unfolds the anti-falling load-bearing frame 40 to the state as shown in FIG. Figure 3The position changes to the deployed protection state; A receiving cloth 28, the four sides of which are fixed on the anti-falling bearing frame 40, and when the anti-falling bearing frame 40 is unfolded, the receiving cloth 28 forms a cloth bag shape which is open upwards, and a folding storage portion is further provided at the bottom of the receiving cloth 28, and the folding storage portion is configured to fold the receiving cloth 28 to form a flat structure for easy storage; The cable 23 has two ends disposed on the anti-falling load-bearing frame 40 and the anti-falling fixed frame 18, respectively, and the cable 23 is configured such that when the anti-falling load-bearing frame 40 is opened, the cable 23 is straightened obliquely to connect the anti-falling load-bearing frame 40 and the anti-falling fixed frame 18, so that the anti-falling load-bearing frame 40 obtains at least two symmetrical traction support points (such as Figure 3 ).

[0023] The electric control system includes a trigger fixed at the lower end of the elevator floor door 12 and a controller for controlling the electromagnet 34. The controller is a wired control connected to the controlled component through a wire and the controller and the trigger are wired connected. The trigger is configured to be triggered by colliding with the lower door sill strip 14 of the floor door when the elevator floor door 12 leaves the normal moving range of the floor door lower door sill strip 14 and invades the elevator shaft 11. After receiving the trigger signal, the controller immediately cuts off the power to the electromagnet 34 so that the anti-fall load-bearing frame 40 is deployed, and the controller is wired to the elevator emergency button or fire protection switch of the adjacent floor so that it can be triggered at the same time to stop the elevator car 16 in the corresponding elevator shaft.

[0024] In a preferred embodiment, the folding storage portion includes a storage plate frame 32 fixed to the lower end surface of the receiving cloth 28 by sewing or gluing, and a storage plastic plate 31 is fixedly provided on the storage plate frame 32, and a magnetic armature 33 is fixedly provided at the end of the storage plate frame 32, and an electromagnet 34 magnetically attracted to the magnetic armature 33 is arranged at the middle position of the four side edges of the anti-falling load-bearing frame 40, and when the receiving cloth 28 is folded and stored, it is flattened by the storage plastic plate 31 (such as Figure 4 ), at this time, the magnetic armature 33 is magnetically attracted to the electromagnet 34 fixed on the anti-falling bearing frame 40 and then fixed. When the elevator floor door 12 is invaded, the electromagnet 34 on the anti-falling bearing frame 40 and the electromagnet 34 on the anti-falling fixing frame 18 are simultaneously powered off, and the anti-falling bearing frame 40 is quickly unfolded under the elastic potential energy of the torsion spring, and the receiving cloth 28 is quickly unfolded under the gravity traction of the storage plate frame 32.

[0025] In a preferred embodiment, at least two impact buffer devices 29 are symmetrically fixed on the anti-falling bearing frame 40, wherein one end of the cable 23 is fixedly provided with a limit block and is arranged in the through-hole structure 20 in the anti-falling fixing frame 18, and the other end is connected to the impact buffer device 29, and the front side of the anti-falling fixing frame 18 is provided with a cable opening 21, and two anti-stuck rollers 22 spaced apart vertically and horizontally rotated in the cable opening 21 are provided, and the cable 23 passes through between the anti-stuck rollers 22. After being set, the concealment of the cable 23 in the storage state can be effectively improved, which is convenient for storage. In addition, after the anti-falling bearing frame 40 is unfolded, a diagonal state can be quickly formed, and the limit block is used to limit the end of the cable 23 to pass through the cable opening 21 to ensure that the end of the cable 23 forms an inseparable connection with the anti-falling fixing frame 18.

[0026] In a preferred embodiment, a piston block 35 is slidably provided in the impact buffer device 29, one end of the cable 23 is fixed on the piston block 35 and a spring 36 is provided in the impact buffer device 29 to press against the right end surface of the piston block 35. When the anti-fall bearing frame 40 is subjected to a falling impact, the spring 36 can absorb part of the impact force through deformation, thereby reducing the rigid impact force's damage to the rigid connection between the cable 23 and the anti-fall fixing frame 18, and reducing the instantaneous impact caused by the rigid impact force on the rigid connection position between the anti-fall fixing frame 18 and the wall.

[0027] In a preferred embodiment, the combination Figure 3 A compressed gas cylinder 24 is arranged on the anti-falling fixing frame 18, and an exhaust pipeline connected with the exhaust port of the compressed gas cylinder 24 is arranged inside the anti-falling fixing frame 18, and the other end of the exhaust pipeline is provided with a threaded pipe joint and is led out from any position of the k surface, an inflatable airbag is arranged on the inner side of the receiving cloth 28, and the inflatable airbag is connected to the threaded pipe joint on the k surface through a hose with a threaded pipe joint, and a solenoid valve is arranged on the exhaust pipeline of the compressed gas cylinder 24, and the solenoid valve is controlled by a controller by wire. When the solenoid valve is opened, compressed air is quickly filled into the inflatable airbag inside the receiving cloth 28 to form a better protective buffer layer (the inflatable airbag, the solenoid valve, the exhaust pipeline, and the hose with a threaded pipe joint are not shown in the figure).

[0028] In a preferred embodiment, the inflatable airbag can be bonded by gluing or by gluing matching Velcro to the receiving cloth 28 and the inflatable airbag respectively and then bonding them by Velcro. The design of bonding Velcro is to facilitate the removal of the airbag and replacement of a new one after use, and the compressed gas cylinder 24 is connected to the anti-fall fixing frame 18 by a threaded sealing structure, which makes it convenient to replace the compressed gas cylinder 24 and saves usage costs.

[0029] In a preferred embodiment, at least two symmetrically arranged auxiliary load bearing devices 30 are further included. The auxiliary load bearing devices 30 are arranged on the inner wall of the elevator shaft 11. The auxiliary load bearing devices 30 include a base 37 fixed to the wall by cement screws and a bearing plate 39 hinged to the base 37. A horizontally arranged limit plate 38 is fixedly arranged below the base 37. Similarly, torsion springs are arranged at both ends of the hinge shaft of the bearing plate 39 to enable the bearing plate 39 to flip open. Figure 5 The auxiliary load-bearing device 30 is in an unopened state for easy storage in the elevator shaft 11. An electromagnet 34 is also provided on the base 37, and the electromagnet 34 on the base 37 is uniformly controlled by a controller. The bearing plate 39 flips ninety degrees after losing the magnetic fixation of the electromagnet and presses on the limit plate 38 to form a support point. The side frame of the anti-falling bearing frame 40 is mounted on the bearing plate 39 after unfolding, so that the auxiliary load-bearing device 30 forms a support position for the far end of the anti-falling bearing frame 40, further improving the bearing capacity of the anti-falling bearing frame 40.

[0030] In a preferred embodiment, the combination Figure 7 When the anti-falling load-bearing frame 40 is unfolded as shown in the figure (the solid line part in the figure), the downward flipping angle of the anti-falling load-bearing frame 40 does not exceed five degrees after the anti-falling load-bearing frame 40 is impacted again in the unfolded state (the dotted line part in the figure indicates that the anti-falling load-bearing frame 40 is in the rotation limit position), and when the anti-falling load-bearing frame 40 is in the rotation limit position, the anti-falling load-bearing frame 40 contacts the bearing plate 39, and the anti-falling load-bearing frame 40 is supported by the bearing plate 39 to improve safety.

[0031] In a preferred embodiment, the trigger is a push-type electronic switch, which is fixed at the lower end of the elevator floor door 12 and extends into the slide groove of the lower door sill strip 14 of the floor door. When the elevator floor door 12 opens and closes normally, it does not contact the lower door sill strip 14 of the floor door. When the elevator floor door 12 is deformed after being impacted, the push-type electronic switch hits the lower door sill strip 14 of the floor door to generate a trigger signal. Alternatively, a laser trigger can also be used.

[0032] In a preferred embodiment, a reserved installation pit is provided on the installation wall of the anti-falling fixing frame 18 and the anti-falling bearing frame 40. Figure 4 After the device is installed in contact with the wall, the exposed wall surface of the anti-falling bearing frame 40 is flush with the inner wall surface of the elevator shaft 11. After the device is installed, it is in a stored state and does not invade the travel range of the original elevator car at any position.

[0033] In addition, according to actual conditions, a plurality of the devices can be arranged at intervals in the elevator shaft 11, and the protection part and the control part of the device can be arranged in a staggered manner to improve the safety redundancy. For example, a trigger and a controller can be arranged on the elevator floor door 12 on the 9th floor to control the electromagnet 34 arranged on the 7th floor or the 6th floor. As shown in the figure, the anti-fall fixing frame 18 is arranged between the two adjacent elevator floor doors 12 above and below, which does not affect the normal use of the elevator, and the opening that is initially opened is also close to the side where the person falls, which can provide a better protection effect.

[0034] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation modes. Any other implementation modes derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. Elevator shaft anti-fall protection system, characterized by: include; An anti-falling fixing frame (18) connected to the load-bearing structure is fixed to a wall near the elevator floor door (12) by cement screws (19) and is located between the upper and lower elevator floor doors (12); An anti-falling load-bearing frame (40), wherein a rotating shaft (27) is fixedly provided on one side of the anti-falling load-bearing frame (40) and is hinged to the anti-falling fixing frame (18) through the rotating shaft (27), and torsion springs are arranged at both ends of the rotating shaft (27), and when the anti-falling load-bearing frame (40) and the anti-falling fixing frame (18) are in a parallel state, the torsion springs are in a force storage state, and an electromagnet (34) is fixedly provided on the anti-falling fixing frame (18) to magnetically fix the anti-falling load-bearing frame (40); A receiving cloth (28), wherein the four sides of the receiving cloth (28) are fixed on the anti-falling bearing frame (40) and the receiving cloth (28) is in the shape of a cloth bag that is open upwards after being unfolded, and a folding storage portion is also provided at the bottom of the receiving cloth (28), and the folding storage portion is configured to store the receiving cloth (28) after folding it into a flat structure; A cable (23) connects the anti-falling bearing frame (40) and the anti-falling fixing frame (18); An electric control system comprises a trigger fixed at the lower end of an elevator landing door (12) and a controller for controlling the electromagnet (34), wherein the trigger is configured to be triggered by colliding with a lower door sill strip (14) of the landing door when the elevator landing door (12) intrudes into an elevator shaft (11), and the controller cuts off the power to the electromagnet (34) after receiving the trigger signal to enable the anti-falling bearing frame (40) to unfold, and the controller is configured to be linked with an elevator emergency button or a fire protection switch to simultaneously control the elevator car (16) in the corresponding elevator shaft to stop.

2. The elevator shaft fall protection system according to claim 1, characterized in that: The folding storage portion comprises a storage plate frame (32) fixed to the lower end surface of the receiving cloth (28) by sewing or gluing, and a storage plastic plate (31) is fixed on the storage plate frame (32), and a magnetic armature (33) is fixed at the end of the storage plate frame (32), and an electromagnet (34) magnetically attracted to the magnetic armature (33) is arranged at the middle position of the four side edges of the anti-falling bearing frame (40). When the receiving cloth (28) is folded and stored, it is pressed and stored by the storage plastic plate (31). At this time, the magnetic armature (33) is magnetically attracted to the electromagnet (34) fixed on the anti-falling bearing frame (40) to be fixed.

3. The elevator shaft fall protection system according to claim 1, characterized in that: At least two impact buffer devices (29) are symmetrically fixed on the anti-falling bearing frame (40), wherein one end of the cable (23) is fixedly provided with a limit block and is arranged in a through hole structure (20) in the anti-falling fixing frame (18), and the other end is connected to the impact buffer device (29), and the front side of the anti-falling fixing frame (18) is provided with a cable opening (21), and two anti-stuck rollers (22) spaced apart from each other are horizontally rotatably arranged in the cable opening (21), and the cable (23) passes through between the anti-stuck rollers (22), and the limit block cannot pass through the gap between the anti-stuck rollers (22).

4. The elevator shaft fall protection system according to claim 3, characterized in that: The cable (23) is configured such that when the anti-falling load-bearing frame (40) is opened, the cable (23) is straightened obliquely to connect the anti-falling load-bearing frame (40) and the anti-falling fixing frame (18); a piston block (35) is slidably provided in the impact buffer device (29); one end of the cable (23) is fixed on the piston block (35); and a spring (36) is provided in the impact buffer device (29) to press against the right end surface of the piston block (35).

5. The elevator shaft fall protection system according to claim 1, 2, 3 or 4, characterized in that: A compressed gas cylinder (24) is arranged on the anti-falling fixing frame (18), and an exhaust pipeline connected to the exhaust port of the compressed gas cylinder (24) is arranged inside the anti-falling fixing frame (18), and the other end of the exhaust pipeline is provided with a threaded pipe joint and is led out from any position of the k-surface, an inflatable airbag is arranged on the inner side surface of the receiving cloth (28), and the inflatable airbag is connected to the threaded pipe joint on the k-surface through a hose with a threaded pipe joint, and an electromagnetic valve is arranged on the exhaust pipeline of the compressed gas cylinder (24), and the electromagnetic valve is controlled by a controller.

6. The elevator shaft fall protection system according to claim 5, characterized in that: The inflatable airbag can be connected to the receiving cloth (28) by gluing or gluing matching Velcro tapes on the receiving cloth (28) and the inflatable airbag respectively and then bonding them with Velcro tapes. The compressed gas cylinder (24) is connected to the anti-fall fixing frame (18) by a threaded sealing structure.

7. The elevator shaft fall protection system according to claim 5, characterized in that: The invention also comprises at least two symmetrically arranged auxiliary load bearing devices (30), wherein the auxiliary load bearing devices (30) are arranged on the inner side wall of the elevator shaft (11), and the auxiliary load bearing devices (30) comprise a base (37) fixed on the wall by cement screws and a bearing plate (39) hinged on the base (37); a horizontally arranged limit plate (38) is fixedly arranged below the base (37); torsion springs are arranged at both ends of the hinge axis of the bearing plate (39) for flipping and opening the bearing plate (39) by elastic potential energy; an electromagnet (34) is also arranged on the base (37), and the electromagnet (34) on the base (37) is uniformly controlled by a controller; the bearing plate (39) flips 90 degrees after losing the magnetic attraction fixation of the electromagnet and presses on the limit plate (38) to form a support point; and the side frame of the anti-fall bearing frame (40) is mounted on the bearing plate (39) after unfolding.

8. The elevator shaft fall protection system according to claim 7, characterized in that: After the anti-falling load-bearing frame (40) is impacted again in the unfolded state, the downward turning angle of the anti-falling load-bearing frame (40) does not exceed five degrees, and when the anti-falling load-bearing frame (40) is at the rotation limit position, the anti-falling load-bearing frame (40) contacts the bearing plate (39).

9. The elevator shaft fall protection system according to claim 1, characterized in that: The trigger is a push-type electronic switch, which is fixed at the lower end of the elevator landing door (12) and extends into a slide groove of a lower door sill strip (14) of the landing door. When the elevator landing door (12) is normally opened and closed, it does not contact the lower door sill strip (14) of the landing door. When the elevator landing door (12) is impacted, it is deformed so that the push-type electronic switch hits the lower door sill strip (14) of the landing door to generate a trigger signal.

10. The elevator shaft fall protection system according to claim 1, characterized in that: A reserved installation pit is provided on the installation wall surface of the anti-falling fixing frame (18) and the anti-falling bearing frame (40); after installation, the device will not intrude into the travel range of the original elevator car at any position in the storage state.

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