Surrounding type elevator and using method
By installing a ring -shaped anti -pendant net and lifting mechanism on the lifting platform, the sensor was used to detect and automatically extend the anti -fall net, which solved the problem that the existing lifting platform could not effectively prevent the drop of actors from falling, and significantly reduced the incidence of safety accidents.
Patent Information
- Application Number
- CN202411506663.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-01-21
AI Technical Summary
The existing lifting platform cannot effectively prevent actors from falling when it is not in use, resulting in safety accidents.
A wrap-around elevator is designed, which uses a ring-shaped anti-fall net and a lifting mechanism. It uses sensors to detect falling people and automatically extends the anti-fall net to catch them, ensuring the safety of actors when the platform rises.
Effectively reduce the incidence of safety accidents and ensure the safety of actors when using the lifting platform.
Smart Images
Figure CN119330252A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of elevators, and in particular relates to a surround-type lifting elevator and a use method thereof. Background Art
[0002] In stage performances, for the sake of program effects, actors often need to be lifted with the help of a lifting platform when performing some programs. The structure of the existing lifting platform includes a bottom plate and a platform located above the bottom plate. The bottom plate is connected to the platform through a multi-link scissor structure. A hydraulic cylinder that drives the platform to rise is provided on the bottom plate or the scissor structure. A sunken hole is set on the stage, and the lifting platform is set in the hole. In the initial state, the platform of the lifting platform is kept flush with the stage surface, and the hydraulic cylinder makes the platform rise, driving the actors on the platform to rise.
[0003] The existing lifting platform has the following defects: in order to make the entire stage surface flat when the lifting platform is not in use, no fence is set on the stage. Setting a fence will hinder the actors' free movement, but this will lead to the risk of falling of the actors on it after the stage rises, which may cause safety accidents; when the stage rises to a higher height, the holes on the stage are exposed, and some actors who are still performing on the stage may fall into the holes if they are not careful, causing safety accidents.
[0004] Therefore, the existing lifting platform used for the stage has the defect of easily causing safety accidents. Summary of the invention
[0005] The object of the present invention is to provide a surround type lift and a method of using the same. The present invention has the advantage of being able to reduce the incidence of safety accidents.
[0006] The technical solution of the present invention is as follows: a surround-type lifting elevator comprises a hole arranged on a stage surface, a concave step is arranged at the upper end of the hole, a table plate is arranged at the concave step, the top surface of the table plate is flush with the stage surface, the table plate is connected to the bottom plate through a lifting mechanism, an annular anti-falling net is arranged at the bottom of the table plate, a plurality of circumferentially distributed connecting rods are arranged on the anti-falling net, the outer end of the connecting rod is close to the edge of the table plate, the connecting rod is slidably connected to the table plate, a locking mechanism is arranged between the connecting rod and the table plate, and a compression spring is arranged between the connecting rod and the table plate; a plurality of sensors are arranged on the outer periphery of the table plate, a controller is arranged on the bottom surface of the table plate, and the locking mechanism and the sensors are both connected to the controller.
[0007] In the aforementioned surround-type lifting elevator, the anti-fall net includes an outer rope and an inner rope, both of which are annular. Both the outer rope and the inner rope are inelastic ropes. Both the outer rope and the inner rope are in a relaxed state. A plurality of elastic ropes, both of which are annular, are arranged between the outer rope and the inner rope. The elastic ropes are in a taut state. The net also includes a plurality of circumferentially distributed connecting ropes, which point to the central axis of the platform. The outer rope, the inner rope and the elastic rope are all fixed to the connecting rope.
[0008] In the aforementioned surround-type lifting elevator, the lifting mechanism includes N coaxially nested telescopic tubes, adjacent telescopic tubes are slidably connected, adjacent telescopic tubes are linked and can achieve axial relative movement, and are arranged from outside to inside. The lower end of the first telescopic tube is fixed to the bottom plate, and the upper end of the Nth telescopic tube is fixed to the table plate. A screw is provided inside the Nth telescopic tube, and a driving plate is provided at the lower end of the second telescopic tube. The lower end of the screw passes through the driving plate and is rotatably connected to the bottom plate. A motor is provided on the bottom plate, and a driving gear is provided at the output end of the motor, and a passive gear connected to the screw is provided on one side of the driving gear.
[0009] In the aforementioned surround-type elevator, linkage mechanisms are provided on the second to N-1 telescopic tubes, and the linkage mechanism on the Mth telescopic tube includes two pulleys respectively located at the upper and lower ends of the Mth telescopic tube, and an annular driving rope is provided between the upper and lower pulleys. The outer part of the upper end of the driving rope is connected to the M-1th telescopic tube through the first bracket, and the inner part of the lower end of the driving rope is connected to the M+1th telescopic tube through the second bracket, and M is any integer from 2 to N-1.
[0010] In the aforementioned surround-type elevator, the telescopic tubes are all square tubes, and both sides of the second to N-1th telescopic tubes are all linked mechanisms.
[0011] In the aforementioned surround-type elevator, there are four telescopic tubes.
[0012] In the aforementioned surround-type lifting elevator, a limiting plate is provided at the upper end of the screw.
[0013] In the aforementioned surround-type lifting elevator, a flange is provided at the lower end of the screw, the flange is connected to the base plate via a plane bearing, a deep groove ball bearing connected to the screw is provided on the upper side of the flange, and the deep groove ball bearing is connected to the first telescopic tube or the base plate via a third bracket.
[0014] In the aforementioned surround-type elevator, a ring-shaped protective plate is provided at the bottom of the platform, the protective plate is placed on the bottom surface of the concave step, the inner circle of the protective plate is close to the lifting mechanism, and a supporting structure is provided between the protective plate and the platform, and the supporting structure is located on the inner side of the anti-fall net.
[0015] The method of using the aforementioned surround-type elevator is to raise or lower the platform through the lifting mechanism, detect whether someone falls from the platform through the sensor, open the locking mechanism through the controller, and extend the anti-fall net from the bottom of the platform to catch the fallen person.
[0016] Compared with the prior art, the present invention mainly makes the following improvements on the basis of the existing lifting platform: 1) A sensor is set on the periphery of the platform. When an actor falls from the platform, the sensor generates a signal and transmits it to the controller. The controller opens the locking mechanism, which allows the connecting rod to extend, driving the anti-fall net at the bottom of the platform to extend, forming a surrounding protective area on the platform to catch the fallen person, thereby reducing the incidence of safety accidents. 2) The scissors structure is replaced with the lifting mechanism of the present invention, which has a closed cylindrical shape and cooperates with the protective plate to always form a closure on the hole, which can effectively prevent the actors on the stage from falling into the hole, further reducing the incidence of safety accidents. Therefore, the present invention has the advantage of reducing the incidence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view schematic diagram of the present invention.
[0018] Figure 2 It is a schematic diagram of the table top viewed from above.
[0019] Figure 3 It is a schematic diagram of the connection between the connecting rod and the table.
[0020] Figure 4 It is a structural schematic diagram of the linkage mechanism on the second telescopic tube.
[0021] The markings in the attached drawings are: 1-stage surface, 2-hole, 3-recessed step, 4-stage, 5-lifting mechanism, 6-anti-fall net, 7-connecting rod, 8-locking mechanism, 9-compression spring, 10-sensor, 11-controller, 12-outer cable, 13-inner cable, 14-elastic cable, 15-connecting cable, 16-telescopic tube, 17-linkage mechanism, 18-bottom plate, 19-screw, 20-driving plate, 21-motor, 22-driving gear Wheel, 23-passive gear, 24-ropes, 25-driving rope, 26-first bracket, 27-second bracket, 28-limiting plate, 29-flange, 30-plane bearing, 31-deep groove ball bearing, 32-third bracket, 33-protective plate, 34-support structure, 35-slider, 36-slide rail, 37-baffle, 38-fourth bracket, 39-fifth bracket, 40-guide column, 41-linear bearing, 42-electromagnetic telescopic rod. DETAILED DESCRIPTION
[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0023] Example. A wraparound lift, such as Figure 1As shown, it includes a hole 2 arranged on a stage surface 1, a concave step 3 is arranged at the upper end of the hole 2, a platform 4 is arranged at the concave step 3, the top surface of the platform 4 is flush with the stage surface 1, the platform 4 is connected to the bottom plate 18 through a lifting mechanism 5, the bottom plate 18 is fixed to the bottom surface of the hole 2, an annular anti-falling net 6 is arranged at the bottom of the platform 4, a plurality of circumferentially distributed connecting rods 7 are arranged on the anti-falling net 6, the outer end of the connecting rod 7 is close to the edge of the platform 4, the inner end of the connecting rod 7 points to the central axis of the platform 4, the connecting rod 7 is slidably connected to the platform 4, and a locking device is arranged between the connecting rod 7 and the platform 4. Mechanism 8, a compression spring 9 is provided between connecting rod 7 and table 4; multiple sensors 10 are provided on the outer periphery of table 4, the detection direction of sensor 10 is inclined upward 45-60° (to detect the falling person as early as possible, leaving enough time for the extension of connecting rod 7), the distance between adjacent sensors 10 does not exceed 0.5 meters, the sensor 10 adopts an infrared sensor, such as HC-SR501, a controller 11 is provided in the middle of the bottom surface of table 4, the locking mechanism 8 and sensor 10 are connected to controller 11, and controller 11 can use fx2n series PLC. Controller 11 is connected to the mains, or a battery fixed to table 4 is set on one side of controller 11, controller 11 draws power from the battery, and the charging interface of the battery is led to the top surface of table 4.
[0024] like Figure 2 As shown, the anti-falling net 6 includes an outer rope 12 and an inner rope 13, both of which are annular. The outer rope 12 and the inner rope 13 are inelastic ropes, which can be made of nylon. The outer rope 12 and the inner rope 13 are both in a relaxed state. When the connecting rod 7 is extended to the extreme position (extended 1.2-1.5 meters), the outer rope 12 and the inner rope 13 are tightened. A plurality of elastic ropes 14, both of which are annular, are arranged between the outer rope 12 and the inner rope 13. The elastic ropes 14 are in a tightened state, so that the anti-falling net 6 is in a plane state, avoiding being seen by the audience, and having a better visual effect. The anti-falling net 6 also includes a plurality of circumferentially distributed connecting ropes 15, which point to the central axis of the platform 4, and the outer rope 12, the inner rope 13 and the elastic rope 14 are all fixed to the connecting rope 15. When someone falls on the anti-fall net 6, since the inner and outer ropes are inelastic and the middle elastic rope 14 is elastic, the anti-fall net 6 will form a bag shape, which can better wrap the falling person and prevent him from rolling outward or inward, thereby improving safety.
[0025] like Figure 3As shown, a slider 35 is provided at the inner end of the connecting rod 7, a slide rail 36 cooperating with the slider 35 is provided at the bottom of the table 4, a baffle 37 for limiting the slider 35 from moving outward is provided at the outer end of the slide rail 36, a fourth bracket 38 extending downward and fixed to the table 4 is provided on one side of the inner end of the slide rail 36, a fifth bracket 39 is provided at the outer end of the connecting rod 7, a guide column 40 is provided between the fourth bracket 38 and the fifth bracket 39, a spiral compression spring 9 is provided on the guide column 40, one end of the guide column 40 is fixed to the fifth bracket 39, and the other end of the guide column 40 passes through the fourth bracket 38 and maintains a sliding connection, and the anti-falling net 6 passes between the compression spring 9 and the connecting rod 7, and the anti-falling net 6 is fixed at the bottom of the connecting rod 7. The locking mechanism 8 is provided on the linear bearing 41 at the inner end of the connecting rod 7 and the electromagnetic telescopic rod 42 fixed at the bottom of the table 4, the telescopic end of the electromagnetic telescopic rod 42 is inserted into the linear bearing 41, and the electromagnetic telescopic rod 42 is connected to the controller. Under normal circumstances, since the telescopic end of the electromagnetic telescopic rod 42 is inserted into the linear bearing 41, the connecting rod 7 cannot move outward. When the controller 11 contracts the electromagnetic telescopic rod 42, the electromagnetic telescopic rod 42 is separated from the linear bearing 41. Under the elastic force of the compression spring 9, the connecting rod 7 extends outward, driving the anti-fall net 6 to move outward. In order to improve the response speed, on the basis of ensuring sufficient strength, the connecting rod 7 and the guide column 40 are preferably hollow structures and have a low material density, such as aluminum alloy tubes.
[0026] The lifting mechanism 5 includes four coaxially nested telescopic tubes 16 , each of which is a square tube, and adjacent telescopic tubes 16 are slidably connected to each other.
[0027] Sorting the meter from outside to inside, the lower end of the first telescopic tube 16 is fixed to the base plate 18, the upper end of the fourth telescopic tube 16 is fixed to the table 4, a screw 19 is provided inside the fourth telescopic tube 16, a driving plate 20 is provided at the lower end of the second telescopic tube 16, the lower end of the screw 19 passes through the driving plate 20 and is rotatably connected to the base plate 18, a motor 21 is provided on the base plate 18, a driving gear 22 is provided at the output end of the motor 21, and a passive gear 23 connected to the screw 19 is provided on one side of the driving gear 22.
[0028] Both sides of the second and third telescopic tubes 16 are provided with linkage mechanisms 17. Providing linkage mechanisms 17 on both sides can make the telescopic action smoother, reduce wear, extend the service life, and improve safety. Figure 4As shown, the linkage mechanism 17 on the Mth telescopic tube 16 includes two rotatable pulleys 24 respectively located at the upper and lower ends of the Mth telescopic tube 16, and an annular driving rope 25 is arranged between the upper and lower pulleys 24. The outer portion of the upper end of the driving rope 25 is connected to the M-1th telescopic tube 16 through the first bracket 26, and the inner portion of the lower end of the driving rope 25 is connected to the M+1th telescopic tube 16 through the second bracket 27, where M is two or three. When the second telescopic tube 16 rises, the left side of the corresponding driving rope 25 is limited by the first telescopic tube 16, and the driving rope 25 rotates counterclockwise, so that the third telescopic tube 16 rises relative to the second telescopic tube 16. Similarly, the fourth telescopic tube 16 rises relative to the third telescopic tube 16, so that the table rises.
[0029] A limit plate 28 is provided at the upper end of the screw rod 19 for limiting the maximum rising height of the platform. A flange 29 is provided at the lower end of the screw rod 19. The flange 29 is connected to the base plate 18 via a plane bearing 30. A deep groove ball bearing 31 connected to the screw rod 19 is provided on the upper side of the flange 29. The deep groove ball bearing 31 is connected to the first telescopic tube 16 via a third bracket 32.
[0030] The bottom of the platform 4 is provided with an annular protective plate 33, which is placed on the bottom surface of the concave step 3, and the inner circle of the protective plate 33 is close to the lifting mechanism 5. A support structure 34 is provided between the protective plate 33 and the platform 4. The support structure 34 can be a plurality of supporting foot pads made of rubber material. The support structure 34 mainly forms a moving space between the platform 4 and the protective plate 33 to prevent the anti-fall net from being crushed. The support structure 34 is located on the inner side of the anti-fall net 6. The protective plate 33 is used to prevent the actor from falling into the hole 2. Anchor bolts need to be set between the bottom plate 18 and the bottom surface of the hole to fix it. In order to install it, the personnel need to enter the hole, and the protective plate 33 is hoisted out during installation and reinstalled after installation.
[0031] Instructions for use: The motor 21 is connected to the mains via a forward / reverse switch, which is set on the outside of the hole 2. When the forward / reverse switch is turned on, the motor 21 rotates forward, reverses or stops. When the motor 21 rotates forward, the active gear 22 rotates forward, and the screw 19 is driven to rotate via the passive gear 23. The screw 19 causes the second telescopic tube 16 to rise, and the overall height of the lifting mechanism 5 increases, causing the platform 4 to rise, so that the actor on the platform 4 is in a high position. When the actor falls from the platform 4, at least one sensor 10 generates a signal, which is transmitted to the controller. The controller causes all electromagnetic telescopic rods 42 to contract, and all connecting rods 7 lose their constraints, driving the anti-fall net 6 to extend from the bottom of the platform 4 to catch the person who falls. The connection method between the controller, the sensor and the electromagnetic telescopic rod is conventional. It can be seen from the corresponding specification that the method for implementing the above control is also conventional, and those skilled in the art can implement it according to common sense. Therefore, no more detailed description is given.
[0032] In a further preferred embodiment, a light strip may be provided at the outer edge of the platform 4 to form a more eye-catching reminder, so that the outer contour of the platform 4 is more obvious, and the actor can maintain a safe distance from the edge of the platform 4.
[0033] In the description of the embodiments, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation.
Claims
1. Surrounding lift, characterized in that: The invention comprises a hole (2) arranged on a stage surface (1), a concave step (3) being arranged at the upper end of the hole (2), a platform (4) being arranged at the concave step (3), the top surface of the platform (4) being flush with the stage surface (1), the platform (4) being connected to a bottom plate (18) via a lifting mechanism (5), an annular anti-falling net (6) being arranged at the bottom of the platform (4), a plurality of circumferentially distributed connecting rods (7) being arranged on the anti-falling net (6), the outer end of the connecting rod (7) being close to the edge of the platform (4), the connecting rod (7) being slidably connected to the platform (4), a locking mechanism (8) being arranged between the connecting rod (7) and the platform (4), and a compression spring (9) being arranged between the connecting rod (7) and the platform (4); a plurality of sensors (10) being arranged on the outer periphery of the platform (4), a controller (11) being arranged on the bottom surface of the platform (4), and both the locking mechanism (8) and the sensor (10) being connected to the controller (11).
2. The wraparound elevator according to claim 1, characterized in that: The anti-fall net (6) comprises an outer rope (12) and an inner rope (13) both of which are annular, the outer rope (12) and the inner rope (13) are both inelastic ropes, the outer rope (12) and the inner rope (13) are both in a relaxed state, a plurality of elastic ropes (14) both of which are annular are arranged between the outer rope (12) and the inner rope (13), the elastic ropes (14) are in a taut state, and the anti-fall net (6) comprises a plurality of circumferentially distributed connecting ropes (15), the connecting ropes (15) point to the central axis of the platform (4), and the outer rope (12), the inner rope (13) and the elastic rope (14) are all fixed to the connecting ropes (15).
3. The wraparound elevator according to claim 1, characterized in that: The lifting mechanism (5) comprises N coaxially nested telescopic tubes (16), adjacent telescopic tubes (16) are slidably connected to each other, and adjacent telescopic tubes (16) are linked to each other and can realize axial relative movement. Arranged from the outside to the inside, the lower end of the first telescopic tube (16) is fixed to the bottom plate (18), the upper end of the Nth telescopic tube (16) is fixed to the table (4), a screw rod (19) is provided inside the Nth telescopic tube (16), a driving plate (20) is provided at the lower end of the second telescopic tube (16), the lower end of the screw rod (19) passes through the driving plate (20) and is rotatably connected to the bottom plate (18), a motor (21) is provided on the bottom plate (18), a driving gear (22) is provided at the output end of the motor (21), and a passive gear (23) connected to the screw rod (19) is provided on one side of the driving gear (22).
4. The wraparound lift according to claim 3, characterized in that: The second to N-1 telescopic tubes (16) are all provided with linkage mechanisms (17). The linkage mechanism (17) on the M-th telescopic tube (16) comprises two rope wheels (24) respectively located at the upper and lower ends of the M-th telescopic tube (16). An annular driving rope (25) is provided between the upper and lower rope wheels (24). The outer portion of the upper end of the driving rope (25) is connected to the M-1-th telescopic tube (16) through a first bracket (26), and the inner portion of the lower end of the driving rope (25) is connected to the M+1-th telescopic tube (16) through a second bracket (27), where M is any integer from 2 to N-1.
5. The wraparound lift according to claim 4, characterized in that: The telescopic tubes (16) are all square tubes, and both sides of the second to the N-1th telescopic tubes (16) are all provided with linkage mechanisms (17).
6. The wraparound elevator according to claim 4, characterized in that: There are four telescopic tubes (16).
7. The surround-type elevator according to claim 3, characterized in that: A limiting plate (28) is provided at the upper end of the screw rod (19).
8. The surround-type elevator according to claim 3, characterized in that: The lower end of the screw rod (19) is provided with a flange (29), the flange (29) is connected to the base plate (18) via a plane bearing (30), the upper side of the flange (29) is provided with a deep groove ball bearing (31) connected to the screw rod (19), and the deep groove ball bearing (31) is connected to the first telescopic tube (16) or the base plate (18) via a third bracket (32).
9. The surround-type elevator according to claim 2, characterized in that: An annular protective plate (33) is provided at the bottom of the platform (4), the protective plate (33) is placed on the bottom surface of the concave step (3), the inner circle of the protective plate (33) is close to the lifting mechanism (5), and a supporting structure (34) is provided between the protective plate (33) and the platform (4), and the supporting structure (34) is located on the inner side of the anti-fall net (6).
10. The method for using the surround-type lift according to any one of claims 1 to 9, characterized in that: The platform (4) is raised or lowered by a lifting mechanism (5), and a sensor (10) is used to detect whether a person has fallen from the platform (4). The locking mechanism (8) is opened by a controller (11), so that the anti-falling net (6) is extended from the bottom of the platform (4) to catch the fallen person.