Household elevator capable of achieving emergency escape

Abstract

The invention belongs to the field of elevators, and relates to a household elevator capable of emergency escape, which comprises a wall body, a shaft is arranged on the inner side of the wall body, an elevator lower sliding column is fixedly arranged on the right side of the shaft, a sliding groove is formed in the elevator lower sliding column, and two first fixed pulley fixing seats are fixedly arranged on the upper side of the shaft. First fixed pulleys are rotationally arranged on the inner sides of the two first fixed pulley fixing seats, and two second fixed pulley fixing seats are fixedly arranged on the upper side of the shaft. When fire or other things needing emergency escape occur at home, the elevator door can be opened in a pure mechanical mode under the condition that electricity is not used, then the elevator falls through the gravity of people, it can be guaranteed that the initial speed of the elevator is moderate through the mode that a hydraulic rod and an air speed reducer are combined, and the elevator can be safely and reliably opened. And then continuous acceleration is carried out, so that people can escape more quickly and safely.

Description

Technical Field

[0001] The invention belongs to the field of elevators, and in particular relates to a household elevator capable of emergency escape. Background Art

[0002] As we all know, people now live in higher and higher floors, and fire is very dangerous for high-rise buildings. If people do not escape in time, they may be in danger or even die in the fire. The elevators in the building cannot be used when a fire occurs, which makes it very difficult for people to escape. For some existing fire trucks and ladder trucks, the maximum rescue height can only reach more than 50 meters, while today's buildings are much higher than 50 meters. At present, the small slow-descent escape devices for single or home use installed in domestic high-rise residential buildings can carry too few people, and there is no protective device during the use of the small slow-descent escape device, which makes people likely to be injured during the descent. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to propose a home elevator capable of emergency escape. The home elevator capable of emergency escape can bring people to the ground quickly and safely when a fire or other emergency escape occurs in a high-rise residential building.

[0004] The objectives of the present invention can be achieved through the following technical solutions: a home elevator capable of emergency escape, comprising a wall, a shaft being provided inside the wall, an elevator lower slide column being fixedly provided on the right side of the shaft, a slide groove being provided inside the elevator lower slide column, two first fixed pulley fixing seats being fixedly provided on the upper side of the shaft, a first fixed pulley being rotatably provided inside the two first fixed pulley fixing seats, two second fixed pulley fixing seats being fixedly provided on the upper side of the shaft, a second fixed pulley being rotatably provided inside the two second fixed pulley fixing seats, a cable being fixedly provided on the upper side of the shaft, a counterweight being fixedly provided on the lower side of the other end of the cable, the cable being in a winding state and being sufficiently long.

[0005] Preferably, a car is slidably provided in the shaft, a cable fixing seat is fixedly provided on the upper side of the car, the cable passes through the cable fixing seat, a first roller rotating shaft is fixedly provided on the right side of the car, a first roller is rotatably provided on the right side of the first roller rotating shaft, the first roller is slidably connected to the slide groove, a second roller rotating shaft is fixedly provided on the right side of the car, a second roller is rotatably provided on the right side of the second roller rotating shaft, and the second roller is slidably connected to the slide groove.

[0006] Preferably, an air buffer is fixedly provided on the lower side of the shaft, a hydraulic rod is slidably provided on the upper side of the air buffer, a telescopic rod is slidably provided on the upper side of the hydraulic rod, the telescopic rod is fixed to the car, and limiting block cavities are respectively provided on the front, back, left and right sides of the outer side of the hydraulic rod, a limiting block rotating shaft is fixedly provided on the lower side of each limiting block cavity, a limiting block is rotatably provided on the outer side of each limiting block rotating shaft, a spring is fixedly provided on the upper side of each limiting block, and the other end of each spring is fixed to the inner side of each limiting block cavity.

[0007] Preferably, an air compression chamber is provided on the inner side of the air buffer, a first piston is slidably provided on the upper side of the air compression chamber, the inner side of the first piston is fixed to the hydraulic rod, a hydraulic oil chamber is provided on the inner side of the hydraulic rod, a second piston is slidably provided on the upper side of the hydraulic oil chamber, and the inner side of the second piston is fixed to the telescopic rod.

[0008] Preferably, a car cavity is provided in the car, a lowering wrench is rotatably provided on the right side of the car cavity, a first gear is fixedly provided on the right side of the lowering wrench, a rack is slidably provided in the car wall, the first gear is meshed with the rack, a screw rod is rotatably provided on the inner side of the first roller rotating shaft, a second gear is fixedly provided on the left side of the screw rod, the second gear is meshed with the rack, and a fixing pin is fixedly provided on the right side of the screw rod.

[0009] Preferably, a working chamber is provided on the front side of the car, and two first tie rod rotating seats are fixedly provided on the left and right sides of the working chamber respectively, and the first tie rod rotating seats on the left and right sides are symmetrical to each other, a first tie rod rotating seat shaft is fixedly provided on the inner side of each first tie rod rotating seat, a first tie rod is rotatably provided on the outer side of each first tie rod rotating seat shaft, a first tie rod rotating shaft seat is fixedly provided on the right side of each first tie rod, a first tie rod rotating shaft shaft seat is fixedly provided on the front and rear sides of each first tie rod rotating shaft shaft seat respectively, a second tie rod is rotatably provided on the outer side of the first tie rod rotating shaft, a connecting rod rotating seat is fixedly provided on the lower side of each first tie rod, a connecting rod is rotatably provided on the lower side of each connecting rod rotating seat, a connecting rod is fixedly provided on the front side of each connecting rod sliding shaft, and a connecting rod sliding shaft is rotatably provided on the front side of each connecting rod sliding shaft A fixed seat, a door opening wrench shaft is fixedly arranged on the outer side of each connecting rod sliding shaft fixed seat, the front end of each door opening wrench shaft passes through the elevator door and extends to the outer side of the elevator door, the rear end of each door opening wrench shaft passes through the elevator door and extends to the inner side of the elevator door, the front side of each door opening wrench shaft is fixedly provided with an outer door opening wrench, and the rear side of each door opening wrench shaft is fixedly provided with an inner door opening wrench, two second pull rod rotating seats are respectively fixedly arranged on the left and right sides of the elevator door, a second pull rod rotating seat shaft is fixedly arranged on the inner side of each second pull rod rotating seat, and each second pull rod rotating seat shaft is rotatably connected to each second pull rod, four moving wheel fixing plates are respectively fixedly arranged on the upper and lower sides of the elevator door, a moving wheel is rotatably arranged on the inner side of each moving wheel fixing plate, and the moving wheel abuts against the working chamber.

[0010] When a fire occurs at home or other emergency evacuation is required, both hands pull the outer door opening wrench downward, which will drive the door opening wrench shaft to rotate, and drive the connecting rod sliding shaft fixing seat to rotate, so that the left connecting rod sliding shaft slides upward, and the right connecting rod sliding shaft slides downward, so that the left connecting rod slides upward, and the right connecting rod slides downward, so that the first pull rod is pushed upward by the connecting rod, so that the first pull rod on the left side pulls the second pull rod on the left side to move left, so that the second pull rod rotating seat on the left side moves to the left, and the first pull rod on the right side will pull the second pull rod on the right side to move right, so that the second pull rod rotating seat on the right side moves right, so that the elevator door is opened, and then when people go in, they pull the inner door opening wrench upward to close the elevator door. Opening the elevator door in this way in a purely mechanical way is not only faster, but also will not be affected by electricity, and is safer during emergency escape.

[0011] At this time, the descending wrench in the car cavity is turned to drive the first gear to rotate, thereby driving the rack to slide upward, thereby driving the second gear to rotate, thereby driving the screw to rotate, thereby moving the fixing pin to the left, thereby moving the fixing pin out of the wall, thereby causing the car to descend. Since the car is full of people, the weight of the car will be very heavy at this time. Due to the hydraulic oil in the hydraulic oil chamber, the telescopic rod descends slowly, thereby ensuring that the car will not descend too fast at the beginning, thus avoiding the situation where the elevator descends quickly at the beginning and ensuring the safety of people in the elevator.

[0012] When the hydraulic oil in the hydraulic oil chamber is compressed to the extreme, the telescopic rod will no longer move downward. At this time, since the elevator is still accelerating downward, the limit block will be squeezed into the limit block chamber, causing the hydraulic rod to move downward. Since there is less air in the air compression chamber, the pressure is lower, so the elevator will accelerate downward at this time. As the elevator continues to descend, the hydraulic rod continues to move downward, making the space in the air compression chamber smaller and smaller. At this time, the pressure in the air compression chamber continues to increase. When the elevator is about to reach the ground, the air in the air compression chamber is continuously compressed, causing The elevator starts to slow down. When the elevator reaches the ground, the pressure in the air compression chamber will reach its maximum, and the elevator will stop. At this time, pull the inner door opening wrench and the elevator door will be opened, allowing people to get out of the elevator. When all the people are out, the counterweight will fall quickly and pull the elevator upstairs through the cable, so that the remaining people upstairs can quickly escape. This not only ensures that people can escape quickly and safely in the event of a fire or other emergency escape, but also ensures that the elevator can quickly return to its original position to pick up the remaining people for emergency escape.

[0013] Compared with the existing technology, the home elevator with instinctive emergency escape has the following advantages:

[0014] 1. Opening the elevator door purely mechanically is not only faster, but also not affected by electricity, making it safer during emergency escape.

[0015] 2. It avoids the situation where the elevator drops rapidly at the beginning, ensuring the safety of people in the elevator.

[0016] 3. It not only ensures that people can escape quickly and safely in the event of a fire or other emergency escape, but also ensures that the elevator can quickly return to its original position to pick up the remaining people for emergency escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric view of a home elevator that can be used for emergency escape.

[0018] Figure 2 This is a left side view of a home elevator capable of emergency escape.

[0019] Figure 3 It is a front view inside the door of a home elevator capable of emergency escape.

[0020] Figure 4 yes Figure 2 Section view along AA direction.

[0021] Figure 5 yes Figure 3 Cross-sectional view along BB direction.

[0022] Figure 6 yes Figure 1 Enlarged view of the structure at point C in the middle.

[0023] Figure 7 yes Figure 3 Enlarged view of the structure at point D in the middle.

[0024] Figure 8 yes Figure 4 Enlarged view of the structure at point E in the middle.

[0025] Fig. 9 yes Figure 5 Enlarged view of the structure at F in the middle.

[0026] In the figure, 10, wall; 11, elevator downlink column; 12, slide; 13, car; 14, outer door opening spanner; 15, air buffer; 16, hydraulic rod; 17, telescopic rod; 18, elevator door; 19, cable fixing seat; 20, cable; 21, first fixed pulley fixing seat; 22, first fixed pulley; 23, second fixed pulley fixing seat; 24, counterweight; 25, hoistway; 26, second fixed pulley; 27, spring; 28, limit block; 29, limit block rotation shaft; 30, car cavity; 31, descending spanner; 32, rack; 33, screw rod; 34, first roller; 35, first roller rotation shaft; 36, second roller; 37, second roller rotation shaft; 38. Air compression chamber; 39. Second piston; 40. Hydraulic oil chamber; 41. First piston; 42. Moving wheel; 43. Moving wheel fixing plate; 44. Connecting rod; 45. Connecting rod sliding shaft; 46. Working chamber; 47. First tie rod rotating seat; 48. First tie rod rotating seat shaft; 49. First tie rod; 50. Connecting rod rotating seat; 51. First tie rod rotating shaft; 52. Second tie rod; 53. Second tie rod rotating seat shaft; 54. Second tie rod rotating seat; 55. Door opening wrench shaft; 56. Connecting rod sliding shaft fixing seat; 57. Limiting block chamber; 58. Fixing pin; 59. First gear; 60. Second gear; 61. First tie rod rotating shaft seat; 62. Inner door opening wrench. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figure 1 and Figure 2 As shown, a home elevator capable of emergency escape comprises a wall 10, a shaft 25 is arranged on the inner side of the wall 10, an elevator lower slide column 11 is fixedly arranged on the right side of the shaft 25, a slide groove 12 is arranged in the elevator lower slide column 11, two first fixed pulley fixing seats 21 are fixedly arranged on the upper side of the shaft 25, a first fixed pulley 22 is rotatably arranged inside the two first fixed pulley fixing seats 21, two second fixed pulley fixing seats 23 are fixedly arranged on the upper side of the shaft 25, a second fixed pulley 26 is rotatably arranged inside the two second fixed pulley fixing seats 23, a cable 20 is fixedly arranged on the upper side of the shaft 25, a counterweight 24 is fixedly arranged on the lower side of the other end of the cable 20, the cable 20 is in a winding state, and the length is long enough.

[0029] like Figure 1 and Figure 4As shown, a car 13 is slidably provided in the shaft 25, a cable fixing seat 19 is fixedly provided on the upper side of the car 13, and the cable 20 passes through the cable fixing seat 19, a first roller rotating shaft 35 is fixedly provided on the right side of the car 13, a first roller 34 is rotatably provided on the right side of the first roller rotating shaft 35, and the first roller 34 is slidably connected to the slide 12, a second roller rotating shaft 37 is fixedly provided on the right side of the car 13, a second roller 36 is rotatably provided on the right side of the second roller rotating shaft 37, and the second roller 36 is slidably connected to the slide 12.

[0030] like Figure 1 and Figure 6 As shown, an air buffer 15 is fixedly provided on the lower side of the shaft 25, a hydraulic rod 16 is slidably provided on the upper side of the air buffer 15, a telescopic rod 17 is slidably provided on the upper side of the hydraulic rod 16, the telescopic rod 17 is fixed to the car 13, and limiting block cavities 57 are respectively provided on the front, back, left and right sides of the outer side of the hydraulic rod 16, a limiting block rotating shaft 29 is fixedly provided on the lower side of each limiting block cavity 57, a limiting block 28 is rotatably provided on the outer side of each limiting block rotating shaft 29, a spring 27 is fixedly provided on the upper side of each limiting block 28, and the other end of each spring 27 is fixed to the inner side of each limiting block cavity 57.

[0031] like Figure 4 and Figure 8 As shown, an air compression chamber 38 is provided on the inner side of the air buffer 15, a first piston 41 is slidably provided on the upper side of the air compression chamber 38, the inner side of the first piston 41 is fixed to the hydraulic rod 16, a hydraulic oil chamber 40 is provided on the inner side of the hydraulic rod 16, a second piston 39 is slidably provided on the upper side of the hydraulic oil chamber 40, and the inner side of the second piston 39 is fixed to the telescopic rod 17.

[0032] like Figure 4 As shown, a car cavity 30 is provided in the car 13, a lowering wrench 31 is rotatably provided on the right side of the car cavity 30, a first gear 59 is fixedly provided on the right side of the lowering wrench 31, a rack 32 is slidably provided in the wall of the car 13, the first gear 59 is meshed with the rack 32, a screw rod 33 is rotatably provided on the inner side of the first roller rotating shaft 35, a second gear 60 is fixedly provided on the left side of the screw rod 33, the second gear 60 is meshed with the rack 32, and a fixing pin 58 is fixedly provided on the right side of the screw rod 33.

[0033] like Figure 3 , Figure 5 , Figure 7 and Fig. 9As shown, a working chamber 46 is provided at the front side of the car 13, and two first tie rod rotating seats 47 are fixedly provided on the left and right sides of the working chamber 46, respectively. The first tie rod rotating seats 47 on the left and right sides are symmetrical with each other, and a first tie rod rotating seat shaft 48 is fixedly provided on the inner side of each first tie rod rotating seat 47, and a first tie rod 49 is rotatably provided on the outer side of each first tie rod rotating seat shaft 48, and a first tie rod rotating shaft seat 61 is fixedly provided on the right side of each first tie rod 49, and a first tie rod rotating shaft 51 is fixedly provided on the front and rear sides of each first tie rod rotating shaft seat 61, and a second tie rod 52 is rotatably provided on the outer side of the first tie rod rotating shaft 51, and a connecting rod rotating seat 50 is fixedly provided on the lower side of each first tie rod 49, and a connecting rod 44 is rotatably provided on the lower side of each connecting rod rotating seat 50, and a connecting rod sliding shaft 45 is fixedly provided on the front side of each connecting rod 44, and a connecting rod sliding shaft fixedly provided on the front side of each connecting rod sliding shaft 45 Seat 56, a door opening wrench shaft 55 is fixedly arranged on the outer side of each connecting rod sliding shaft fixing seat 56, the front end of each door opening wrench shaft 55 passes through the elevator door 18 and extends to the outer side of the elevator door 18, the rear end of each door opening wrench shaft 55 passes through the elevator door 18 and extends to the inner side of the elevator door 18, the front side of each door opening wrench shaft 55 is fixedly provided with an outer door opening wrench 14, and the rear side of each door opening wrench shaft 55 is fixedly provided with an inner door opening wrench 62, the left and right sides of the elevator door 18 are respectively fixed with two second tie rod rotating seats 54, the inner side of each second tie rod rotating seat 54 is fixed with a second tie rod rotating seat shaft 53, and each second tie rod rotating seat shaft 53 is rotatably connected with each second tie rod 52, and four moving wheel fixing plates 43 are respectively fixedly arranged on the upper and lower sides of the elevator door 18, and a moving wheel 42 is rotatably arranged on the inner side of each moving wheel fixing plate 43, and the moving wheel 42 abuts against the working chamber 46.

[0034] When a fire occurs at home or other emergency evacuation is required, the outside door opening wrench 14 is pulled downward by both hands, which will drive the door opening wrench shaft 55 to rotate, and then drive the connecting rod sliding shaft fixing seat 56 to rotate, so that the left connecting rod sliding shaft 45 slides upward, and the right connecting rod sliding shaft 45 slides downward, so that the left connecting rod 44 slides upward, and the right connecting rod 44 slides downward, so that the first pull rod 49 is pushed upward by the connecting rod 44, so that the first pull rod 49 on the left side pulls the second pull rod 52 on the left side to move left, so that the second pull rod rotating seat 54 on the left side moves left, and the first pull rod 49 on the right side will pull the second pull rod 52 on the right side to move right, so that the second pull rod rotating seat 54 on the right side moves right, so that the elevator door 18 is opened, and then when people go in, they pull the inside door opening wrench 62 upward, so that the elevator door 18 is closed. In this way, the elevator door is opened in a purely mechanical way, which is not only faster, but also will not be affected by electricity, and is safer during emergency escape.

[0035] At this time, the descending wrench 31 in the car cavity 30 is rotated, thereby driving the first gear 59 to rotate, thereby driving the rack 32 to slide upward, thereby driving the second gear 60 to rotate, thereby driving the screw 33 to rotate, so that the fixing pin 58 moves to the left, so that the fixing pin 58 moves out of the wall 10, so that the car 13 descends. Since the car 13 is full of people, the weight of the car 13 will be very heavy at this time. Due to the hydraulic oil in the hydraulic oil chamber 40, the telescopic rod 17 descends slowly, thereby ensuring that the initial descent speed of the car 13 is not too fast, thus avoiding the situation where the elevator descends quickly at the beginning, ensuring the safety of people in the elevator.

[0036] When the hydraulic oil in the hydraulic oil chamber 40 is compressed to the extreme, the telescopic rod 17 will no longer move downward. At this time, since the elevator is still accelerating downward, the limit block 28 will be squeezed into the limit block chamber 57, so that the hydraulic rod 16 will move downward. Since there is less air in the air compression chamber 38, the pressure is low, so the elevator will accelerate down at this time. As the elevator continues to descend, the hydraulic rod 16 continues to move downward, making the space in the air compression chamber 38 smaller and smaller. At this time, the pressure in the air compression chamber 38 continues to increase. When the elevator is about to reach the ground, the air in the air compression chamber 38 is continuously compressed. , so that the elevator starts to slow down. When the elevator reaches the ground, the pressure in the air compression chamber 38 will reach the maximum, and the elevator will stop. At this time, the inner door opening wrench 62 is pulled, and the elevator door 18 will be opened, so that people can get out of the elevator. When all the people have come out, the counterweight 24 will fall quickly, and the elevator will be pulled upstairs by the cable 20, so that the remaining people upstairs can quickly escape. This not only ensures that people can escape quickly and safely in the event of a fire or other emergency escape, but also ensures that the elevator can quickly return to its original position to pick up the remaining people for emergency escape.

[0037] The above descriptions are merely embodiments of the present invention, and are not intended to limit the patent protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A household elevator capable of emergency escape, comprising a wall (10), a shaft (25) being arranged on the inner side of the wall (10), an elevator lower slide post (11) being fixedly arranged on the right side of the shaft (25), a slide groove (12) being arranged in the elevator lower slide post (11), two first fixed pulley fixing seats (21) being fixedly arranged on the upper side of the shaft (25), a first fixed pulley (22) being rotatably arranged in the inner sides of the two first fixed pulley fixing seats (21), two second fixed pulley fixing seats (23) being fixedly arranged on the upper side of the shaft (25), a second fixed pulley (26) being rotatably arranged in the inner sides of the two second fixed pulley fixing seats (23), a cable (20) being fixedly arranged on the upper side of the shaft (25), a counterweight (24) being fixedly arranged on the lower side of the other end of the cable (20), the cable (20) being in a winding state and having a sufficiently long length.

2. A home elevator capable of emergency escape according to claim 1, characterized in that: A car (13) is slidably arranged in the hoistway (25), a cable fixing seat (19) is fixedly arranged on the upper side of the car (13), and the cable (20) passes through the cable fixing seat (19); a first roller rotating shaft (35) is fixedly arranged on the right side of the car (13), a first roller (34) is rotatably arranged on the right side of the first roller rotating shaft (35), and the first roller (34) is slidably connected to the slide groove (12); a second roller rotating shaft (37) is fixedly arranged on the right side of the car (13), a second roller (36) is rotatably arranged on the right side of the second roller rotating shaft (37), and the second roller (36) is slidably connected to the slide groove (12).

3. A home elevator capable of emergency escape according to claim 2, characterized in that: An air buffer (15) is fixedly provided on the lower side of the shaft (25), a hydraulic rod (16) is slidably provided on the upper side of the air buffer (15), a telescopic rod (17) is slidably provided on the upper side of the hydraulic rod (16), the telescopic rod (17) is fixed to the car (13), and limiting block cavities (57) are respectively provided on the front, back, left and right sides of the outer side of the hydraulic rod (16), a limiting block rotating shaft (29) is fixedly provided on the lower side of each limiting block cavity (57), a limiting block (28) is rotatably provided on the outer side of each limiting block rotating shaft (29), a spring (27) is fixedly provided on the upper side of each limiting block (28), and the other end of each spring (27) is fixed to the inner side of each limiting block cavity (57).

4. A home elevator capable of emergency escape according to claim 3, characterized in that: An air compression chamber (38) is provided on the inner side of the air buffer (15), a first piston (41) is slidably provided on the upper side of the air compression chamber (38), the inner side of the first piston (41) is fixed to the hydraulic rod (16), a hydraulic oil chamber (40) is provided on the inner side of the hydraulic rod (16), a second piston (39) is slidably provided on the upper side of the hydraulic oil chamber (40), and the inner side of the second piston (39) is fixed to the telescopic rod (17).

5. A home elevator capable of emergency escape according to claim 4, characterized in that: A car cavity (30) is provided in the car (13), a descending wrench (31) is rotatably provided on the right side of the car cavity (30), a first gear (59) is fixedly provided on the right side of the descending wrench (31), a rack (32) is slidably provided in the wall of the car (13), the first gear (59) is meshed with the rack (32), a screw rod (33) is rotatably provided inside the first roller rotating shaft (35), a second gear (60) is fixedly provided on the left side of the screw rod (33), the second gear (60) is meshed with the rack (32), and a fixing pin (58) is fixedly provided on the right side of the screw rod (33).

6. A home elevator capable of emergency escape according to claim 5, characterized in that: A working chamber (46) is provided at the front side of the car (13), and two first tie rod rotating seats (47) are fixedly provided on the left and right sides of the working chamber (46), respectively. The first tie rod rotating seats (47) on the left and right sides are symmetrical to each other, and a first tie rod rotating seat shaft (48) is fixedly provided on the inner side of each first tie rod rotating seat (47), and a first tie rod (49) is rotatably provided on the outer side of each first tie rod rotating seat shaft (48), and a first tie rod rotating shaft seat (61) is fixedly provided on the right side of each first tie rod (49). The first pull rod rotating shaft seat (61) is respectively fixed with a first pull rod rotating shaft (51) at the front and rear sides, a second pull rod (52) is rotatably provided on the outer side of the first pull rod rotating shaft (51), a connecting rod rotating seat (50) is fixedly provided on the lower side of each first pull rod (49), a connecting rod (44) is rotatably provided on the lower side of each connecting rod rotating seat (50), a connecting rod sliding shaft (45) is fixedly provided on the front side of each connecting rod (44), and a connecting rod sliding shaft fixing seat (56) is rotatably provided on the front side of each connecting rod sliding shaft (45). A door opening spanner shaft (55) is fixedly provided on the outer side of each connecting rod sliding shaft fixing seat (56); a front end of each door opening spanner shaft (55) passes through the elevator door (18) and extends to the outer side of the elevator door (18); a rear end of each door opening spanner shaft (55) passes through the elevator door (18) and extends to the inner side of the elevator door (18); an outer door opening spanner (14) is fixedly provided on the front side of each door opening spanner shaft (55); an inner door opening spanner (62) is fixedly provided on the rear side of each door opening spanner shaft (55); and the elevator door (18 ) are respectively fixed with two second tie rod rotating seats (54) on the left and right sides, a second tie rod rotating seat shaft (53) is fixed on the inner side of each second tie rod rotating seat (54), each second tie rod rotating seat shaft (53) is rotatably connected to each second tie rod (52), and four moving wheel fixing plates (43) are respectively fixed on the upper and lower sides of the elevator door (18), a moving wheel (42) is rotatably provided on the inner side of each moving wheel fixing plate (43), and the moving wheel (42) is in contact with the working chamber (46).

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