CN211812946U

CN211812946U - Automobile elevator

Info

Publication number: CN211812946U
Application number: CN201922358180.1U
Authority: CN
Inventors: 肖维; 姜忆景; 黄辉岸
Original assignee: Matiz Elevator Co ltd
Current assignee: Matiz Elevator Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-10-30
Anticipated expiration: 2029-12-24

Abstract

The invention provides an automobile elevator, which comprises a car, a counterweight, a steel wire rope and a driving system, wherein the car is connected with the counterweight through a cable; the driving system comprises a traction machine, and the traction machine is arranged at the top of the well; the counterweight is arranged on one side of the car; the top of the lift car is provided with a main lift car frame, a first auxiliary lift car frame and a second auxiliary lift car frame; the steel wire ropes comprise a first steel wire rope and a second steel wire rope; one end of a first steel wire rope is fixedly arranged on one side of the top of the well, and the other end of the first steel wire rope sequentially bypasses the first auxiliary car frame, the main car frame, the traction machine and the counterweight and is fixed on the other side of the top of the well; one end of a second steel wire rope is fixedly arranged on one side of the top of the well, and the other end of the second steel wire rope sequentially bypasses the second auxiliary car frame, the main car frame, the traction machine and the counterweight and is fixed on the other side of the top of the well; the traction machine drives the first steel wire rope and the second steel wire rope to move simultaneously so as to drive the lift car to do lifting motion along the vertical direction; by adopting the scheme, the overall balance of the elevator is guaranteed.

Description

Automobile elevator

Technical Field

The invention belongs to the technical field of elevators, and particularly relates to an automobile elevator.

Background

The existing automobile elevator is mostly used for transporting household cars, the designed maximum load is generally not more than 5000kg, the actual weight is not more than 3000kg, and along with the continuous development of buses, particularly the development of new energy buses, the existing automobile elevator is difficult to meet the lifting and transporting stop warehouse of the existing buses; and the car depth of the existing automobile elevator generally does not exceed 7m, and the elevator is mainly used in places such as automobile 4S shops, 3-4 floors of buildings, and the running speed of 0.5m/S is difficult to meet the warehouse stop requirement of the existing bus.

Based on the technical problems existing in the automobile elevator, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.

Disclosure of Invention

The invention aims to provide an automobile elevator aiming at the defects in the prior art and aims to solve the problem of the existing bus lifting and transporting garage.

The invention provides an automobile elevator which can be applied to the existing bus hoisting; the elevator comprises a car, a counterweight, a steel wire rope and a driving system; the driving system comprises a traction machine, and the traction machine is arranged at the top of the well; the counterweight is arranged on one side of the car; the top of the lift car is provided with a main lift car frame, a first auxiliary lift car frame and a second auxiliary lift car frame, and the main lift car frame is arranged in the middle of the top of the lift car; the first auxiliary car frame and the second auxiliary car frame are arranged at the top of the car and are symmetrically positioned at two sides of the main car frame respectively; the steel wire ropes comprise a first steel wire rope and a second steel wire rope; one end of a first steel wire rope is fixedly arranged on one side of the top of the well, and the other end of the first steel wire rope sequentially bypasses the first auxiliary car frame, the second auxiliary car frame, the traction machine and the counterweight and is fixed on the other side of the top of the well; one end of a second steel wire rope is fixedly arranged on one side of the top of the well, and the other end of the second steel wire rope sequentially bypasses the main car frame, the second auxiliary car frame, the traction machine and the counterweight and is fixed on the other side of the top of the well; the traction machine drives the first steel wire rope and the second steel wire rope to move simultaneously, so that the lift car is driven to move up and down along the vertical direction.

Furthermore, a first pulley and a second pulley are arranged on the first auxiliary car frame, and a third pulley and a first direction-changing pulley are arranged at the top of the hoistway above the first auxiliary car frame; a seventh pulley and an eighth pulley are arranged on the second auxiliary car frame, and a ninth pulley and a second direction changing pulley are arranged at the top of the hoistway above the second auxiliary car frame; the first direction-changing pulley and the second direction-changing pulley are positioned at the same horizontal height; the first steel wire rope sequentially passes around the first pulley, the third pulley, the second pulley, the first direction-changing pulley, the second direction-changing pulley, the seventh pulley, the ninth pulley, the eighth pulley, the traction wheel on the traction machine and the pulley on the counterweight and is fixed on the other side of the top of the hoistway.

Furthermore, a fourth pulley and a fifth pulley are arranged on the main car frame; a sixth pulley and a third direction-changing pulley are arranged at the top of the shaft and above the main car frame; the third direction-changing pulley is lower than the second direction-changing pulley along the horizontal direction; and the second steel wire rope sequentially passes around a fourth pulley, a sixth pulley, a fifth pulley, a third direction-changing pulley, a second direction-changing pulley, a seventh pulley, a ninth pulley, an eighth pulley, a traction wheel on a traction machine and a pulley on a counterweight and is fixed on the other side of the top of the hoistway.

Furthermore, a tenth pulley, an eleventh pulley, a twelfth pulley and a thirteenth pulley are arranged on the counterweight; the tenth pulley, the eleventh pulley, the twelfth pulley and the thirteenth pulley are arranged on the counterweight side by side along the horizontal direction; a fourth direction-changing pulley, a fourteenth pulley, a fifteenth pulley and a sixteenth pulley are arranged at the top of the hoistway above the counterweight; the fourteenth pulley, the fifteenth pulley and the sixteenth pulley are arranged at the top of the shaft side by side along the horizontal direction; the fourth direction-changing pulley is arranged on one side of the traction sheave and is positioned above the tenth pulley at the left side; and the first steel wire rope and the second steel wire rope pass around the traction sheave, then sequentially pass around the fourth direction-changing pulley, the tenth pulley, the fourteenth pulley, the eleventh pulley, the fifteenth pulley, the twelfth pulley, the sixteenth pulley and the thirteenth pulley and are fixed on the other side of the top of the hoistway.

Furthermore, the traction machine is a permanent magnet synchronous traction machine which is fixedly arranged at the top of the hoistway and is positioned between the lift car and the counterweight; the permanent magnet synchronous traction machine drives the elevator car to move up and down along the vertical direction at 1.0m/s through the first steel wire rope and the second steel wire rope.

Furthermore, a first auxiliary guide rail and a second auxiliary guide rail are respectively arranged on two sides of the shaft along the vertical direction, and a first main guide rail and a second main guide rail are respectively arranged in the middle of the shaft along the vertical direction; a first guide rail mechanism and a second guide sliding mechanism are arranged on two sides of the lift car along the vertical direction; the first guide sliding mechanism is matched with the first auxiliary guide rail and can slide on the first auxiliary guide rail; the second guide sliding mechanism is matched with the second auxiliary guide rail and can slide on the second auxiliary guide rail; a third guide rail mechanism and a fourth guide rail mechanism are arranged in the middle of the lift car along the vertical direction; the third guide rail mechanism is matched with the first main guide rail and can slide on the first main guide rail; the fourth guide rail mechanism is matched with the second main guide rail and can slide on the second main guide rail.

Furthermore, the first auxiliary guide rails comprise two rows, and the two rows of first auxiliary guide rails are respectively positioned at two opposite sides of the hoistway; and/or the second auxiliary guide rails comprise two rows, and the two rows of second auxiliary guide rails are respectively positioned at two opposite sides of the shaft; and/or the first main guide rails comprise two rows, and the two rows of the first main guide rails are respectively positioned at two opposite sides of the shaft; and/or the second main guide rail comprises two columns, and the two columns of second main guide rails are respectively positioned at two opposite sides of the shaft.

Furthermore, a first safety gear and a second safety gear are arranged in parallel at the middle position of the bottom of the lift car; the first safety gear is arranged on the lift car and is positioned on the side edge of the first main guide rail; the second safety gear is arranged on the lift car and is positioned on the side edge of the second main guide rail; the first safety gear and the second safety gear are connected through a linkage shaft, the first safety gear and the second safety gear are connected with a first speed limiter together, and the first speed limiter controls the first safety gear and the second safety gear to synchronously operate.

Furthermore, a third safety gear and a fourth safety gear are arranged in parallel at the middle position of the other side of the bottom of the lift car; the third safety gear is arranged on the lift car and is positioned on the side edge of the third main guide rail on the opposite side of the first main guide rail; the fourth safety gear is arranged on the lift car and is positioned on the side edge of the fourth main guide rail on the opposite side of the second main guide rail; the third safety gear and the fourth safety gear are connected through a linkage shaft, the third safety gear and the fourth safety gear are connected with a second speed limiter together, and the second speed limiter controls the third safety gear and the fourth safety gear to synchronously operate.

Further, the depth of the car is 14 m; the design load of the car 10 is 16000 kg.

Compared with the prior art, the scheme provided by the invention has the following technical effects:

the scheme provided by the invention realizes an 8:1 rope winding structure by combining a main car frame and an auxiliary car frame, applies a permanent magnet synchronous traction machine with relatively small load to a large-load bus elevator, and achieves high-speed operation of 1.0 m/s;

secondly, the scheme provided by the invention combines distributed suspension and centralized driving, and the distributed suspension is uniform stress of the front part, the middle part and the rear part of the elevator car, so that the overall balance of the large car is ensured, and the structural strength requirement of the large car is also reduced; the centralized driving can more effectively ensure the balance of the elevator in the acceleration and deceleration processes, and compared with a multi-driving scheme, the technical difficulty in the aspect of synchronous control of each driving system is reduced;

thirdly, the scheme provided by the invention adopts distributed braking, four rows of main guide rails and two sets of safety tongs which are designed side by side in a short distance, adopts the same speed limiter for control and coaxial transmission, effectively ensures the synchronism of the actions of the safety tongs, and can greatly reduce the acting force of braking force on the balance of the lift car even if the synchronism has deviation.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The invention will be further explained with reference to the drawings, in which:

fig. 1 is a front view of an automotive elevator of the present invention (without a hoistway);

fig. 2 is a front plan view of an elevator for a vehicle according to the present invention;

fig. 3 is a schematic view of the structure of the lift car of the present invention;

fig. 4 is a schematic view of the safety gear structure of the present invention.

In the figure: 1. a first sub-car frame; 11. a first pulley; 12. a second pulley; 13. a third pulley; 14. A first direction-changing pulley; 2. a main car frame; 21. a fourth pulley; 22. a fifth pulley; 23. a sixth pulley; 24. a third direction-changing pulley; 25. a second direction-changing pulley; 3. a second pair of car frames; 31. a seventh pulley; 32. An eighth pulley; 33. a ninth sheave; 34. a traction sheave; 4. a first wire rope; 41. a tenth pulley; 42. An eleventh sheave; 43. a twelfth pulley; 44. a thirteenth pulley; 45. a fourth direction-changing pulley; 46. a fourteenth sheave; 47. a fifteenth pulley; 48. a sixteenth pulley; 5. a second wire rope; 6. a first auxiliary rail; 7. a first main guide rail; 8. a second main guide rail; 9. a second auxiliary rail; 10. a car; 20. a counterweight; 30. a hoistway; 40. a drive system; 50. a car frame; 60. a linkage shaft; 70. a first safety gear; 80. and a second safety gear.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 4, the present invention provides an elevator for a car, which can be applied to existing bus lifting, wherein the depth of a car 10 of the elevator can be designed to be 14m, which can be understood as the horizontal length of the car; the design load of the car 10 is 16000kg, i.e. the maximum load is 16000 kg; the elevator comprises a car 10, a counterweight 20, a steel wire rope and a driving system 40; the driving system comprises a traction machine, the traction machine is arranged at the top of the hoistway 30 and is used for driving the traction sheave to rotate; the counterweight 20 is arranged on one side of the car 10 and is connected with the car frame through a steel wire rope; specifically, a main car frame 2, a first auxiliary car frame 1 and a second auxiliary car frame 3 are arranged at the top of the car 10; the main car frame 2 is arranged in the middle of the top of the car 10, and the first auxiliary car frame 1 and the second auxiliary car frame 3 are arranged on the top of the car 10 and are symmetrically arranged on two sides of the main car frame 2 respectively, so that the balance function can be achieved to the maximum extent, and particularly when a large-capacity bus is hoisted, the balance function can be achieved when the bus enters the car; further, the wire ropes include a first wire rope 4 and a second wire rope 5; one end of a first steel wire rope 4 is fixedly arranged on one side of the top of the hoistway 30, and the other end of the first steel wire rope 4 sequentially bypasses the first auxiliary car frame 1, the second auxiliary car frame 3, the traction machine and the counterweight 20 and is fixed on the other side of the top of the hoistway 30; one end of a second steel wire rope 5 is fixedly arranged on one side of the top of the well 30, the other end of the second steel wire rope 5 sequentially bypasses the main car frame 2, the second auxiliary car frame 3, the traction machine and the counterweight 20 and is fixed on the other side of the top of the well 30, and as the double steel wire ropes are adopted to respectively connect the first auxiliary car frame and the main car frame with the second auxiliary car frame, the traction machine and the counterweight, and the traction machine drives the first steel wire rope 4 and the second steel wire rope 5 to move simultaneously, the car 10 is driven to do lifting movement along the vertical direction; the scheme provided by the invention is mainly designed for transporting a large-scale rechargeable bus, the maximum designed load of the automobile elevator is 16000kg, and the depth of a car for transporting the bus is 14 m; meanwhile, the bus body is large, the single-layer parking quantity is small, the stereo garage for parking the bus is mostly designed in a high-rise mode, and the running speed of the bus elevator can be designed to be 1 m/s; the elevator is a vertical running tool, so that the requirement on the balance of the car is very high, particularly the elevator with large load and large car depth is easy to tilt forwards and backwards, and the slight tilt can generate very large displacement at the entrance and exit, so that the elevator fails.

Preferably, in combination with the above scheme, as shown in fig. 1 to 4, in this embodiment, the first secondary car frame 1 is provided with a first pulley 11 and a second pulley 12, the top of the hoistway 30 is located above the first secondary car frame 1 and is provided with a third pulley 13 and a first direction-changing pulley 14, and the first direction-changing pulley 14 is higher than the third pulley 13; a seventh pulley 31 and an eighth pulley 32 are arranged on the second auxiliary car frame 3, and a ninth pulley 33 and a second direction-changing pulley 25 are arranged at the top of the hoistway 30 above the second auxiliary car frame 3; the first direction-changing pulley 14 and the second direction-changing pulley 25 are located at the same level; specifically, the first steel wire rope 4 sequentially passes around the first pulley 11, the third pulley 13, the second pulley 12, the first direction-changing pulley 14, the second direction-changing pulley 25, the seventh pulley 31, the ninth pulley 33, the eighth pulley 32, a traction sheave on the traction machine and a pulley on the counterweight 20 and is fixed on the other side of the top of the hoistway 30, and by adopting the scheme, the first steel wire rope 4 is driven by the driving system 40 so as to realize lifting.

Preferably, in combination with the above solution, as shown in fig. 1 to 4, in the present embodiment, the main car frame 2 is provided with a fourth pulley 21 and a fifth pulley 22; a sixth pulley 23 and a third direction-changing pulley 24 are arranged at the top of the hoistway 30 above the main car frame 2, the third direction-changing pulley 24 is higher than the sixth pulley 23, and the third direction-changing pulley 24 is lower than the second direction-changing pulley 25; the third diverting pulley 24 is lower than the second diverting pulley 25 in the horizontal direction; specifically, the second wire rope 5 sequentially passes around the fourth sheave 21, the sixth sheave 23, the fifth sheave 22, the third direction-changing sheave 24, the second direction-changing sheave 25, the seventh sheave 31, the ninth sheave 33, the eighth sheave 32, the traction sheave of the hoisting machine, and the sheave of the counterweight 20, and is fixed to the other side of the top of the hoistway 30; by adopting the scheme, the second steel wire rope 5 is driven by the driving system 40 so as to realize hoisting.

By adopting the scheme, the driving system 40 drives the second steel wire rope 4 and the second steel wire rope 5 to move simultaneously, so that the elevator car can be respectively lifted from the two sides and the middle position of the elevator car, and the balance of the elevator car in the lifting process can be effectively improved.

Preferably, in combination with the above solutions, as shown in fig. 1 to 4, in the present embodiment, the counterweight 20 is provided with a tenth pulley 41, an eleventh pulley 42, a twelfth pulley 43, and a thirteenth pulley 44; the tenth sheave 41, the eleventh sheave 42, the twelfth sheave 43, and the thirteenth sheave 44 are provided side by side in the horizontal direction on the counterweight 20; a fourth direction-changing pulley 45, a fourteenth pulley 46, a fifteenth pulley 47 and a sixteenth pulley 48 are arranged at the top of the hoistway above the counterweight 20; a fourteenth pulley 46, a fifteenth pulley 47 and a sixteenth pulley 48 are arranged side by side in the horizontal direction at the top of the hoistway; the fourth direction-changing pulley 45 is arranged on one side of the traction sheave and is positioned above the tenth pulley 41 at the left side, so that the direction can be adjusted; specifically, after respectively going around the traction sheave, the first wire rope 4 and the second wire rope 5 sequentially go around a fourth direction-changing pulley 45, a tenth pulley 41, a fourteenth pulley 46, an eleventh pulley 42, a fifteenth pulley 47, a twelfth pulley 43, a sixteenth pulley 48 and a thirteenth pulley 44, and are fixed to the other side of the top of the hoistway 30, and the first wire rope 4 and the second wire rope 5 are driven by the driving system 40 to realize synchronous hoisting.

Preferably, in combination with the above schemes, as shown in fig. 1 to 4, in the scheme provided by the present invention, dispersed suspension and centralized driving are selected, the driven steel wire rope group is split into two groups, the two groups are respectively hoisted by the first secondary car frame and the main car frame at the front end and the rear end, and are respectively hoisted through two groups of movable pulleys, are converged to the second secondary car frame, are suspended by the two groups of movable pulleys, and are applied with driving force, and then are suspended by a counterweight, the rope winding structure of the steel wire rope is completed with 8:1 rope winding, the permanent magnet synchronous traction machine is applied to the car elevator, the main machine driving the traction machine is designed in the middle position of the car and the counterweight, so that the balance of the whole car in the acceleration and deceleration process is ensured; the suspension points are uniformly distributed on the auxiliary car frames at the front end and the rear end and the main car frame at the middle position, and the stability of the car frame can be still guaranteed even if the car inlet is subjected to strong unbalance loading force in the loading process; the tractor is a permanent magnet synchronous tractor, so that the permanent magnet synchronous tractor is fixedly arranged at the top of a hoistway and is positioned between the car 10 and the counterweight 20; the permanent magnet synchronous traction machine drives the lift car to move up and down along the vertical direction at 1.0m/s through a first steel wire rope 4 and a second steel wire rope 5; the invention realizes 16000kg load and 1.0m/s running speed of a super-high-speed permanent magnet synchronous traction machine through an 8:1 rope winding structure.

Preferably, in combination with the above solutions, as shown in fig. 1 to 4, in this embodiment, two sides of the hoistway 30 are respectively provided with the first auxiliary guide rail 6 and the second auxiliary guide rail 9 along the vertical direction, and the middle position of the hoistway 30 is respectively provided with the first main guide rail 7 and the second main guide rail 8 along the vertical direction; a first guide rail mechanism and a second guide sliding mechanism are arranged on two sides of the lift car 10 along the vertical direction; wherein, the first guide sliding mechanism is matched with the first auxiliary guide rail 6 and can slide on the first auxiliary guide rail 6; the second sliding guide mechanism is matched with the second auxiliary guide rail 9 and can slide on the second auxiliary guide rail 9; a third guide rail mechanism and a fourth guide rail mechanism are arranged in the middle of the car 10 along the vertical direction; the third guide rail mechanism is matched with the first main guide rail 7 and can slide on the first main guide rail 7; the fourth guide rail mechanism is matched with the second main guide rail 8 and can slide on the second main guide rail 8; by adopting the scheme, the balance hoisting is realized by arranging the plurality of groups of guide rails and the plurality of groups of guide sliding mechanisms in a mutually exclusive manner.

Preferably, in combination with the above solutions, as shown in fig. 1 to 4, in this embodiment, the first auxiliary guide rails 6 include two rows, and the two rows of first auxiliary guide rails are respectively located at two opposite sides of the hoistway 30 and respectively adapted to the sliding guide mechanisms on the car; and/or the second auxiliary guide rails 9 comprise two rows, and the two rows of second auxiliary guide rails are respectively positioned at two opposite sides of the hoistway 30 and are respectively matched with the sliding guide mechanisms on the car; and/or the first main guide rail 7 comprises two rows, and the two rows of first main guide rails are respectively positioned at two opposite sides of the hoistway 30 and are respectively matched with the sliding guide mechanisms on the car; and/or the second main guide rail 8 comprises two rows, and the two rows of second main guide rails are respectively positioned at two opposite sides of the hoistway 30 and are respectively matched with the sliding guide mechanisms on the car; by adopting the scheme, the running stability of the automobile elevator can be effectively improved, and the safety performance is improved.

Preferably, in combination with the above solution, as shown in fig. 1 to 4, in the present embodiment, a first safety gear 70 and a second safety gear 80 are arranged side by side at a middle position of the bottom of the car 10; wherein, the first safety gear 70 is arranged on the car 10 and is positioned at the side of the first main guide rail 7, and mainly plays a role of braking with the first main guide rail 7, so that the first safety gear plays a role of protection when the car is overspeed; the second safety gear 80 is arranged on the car 10 and is positioned at the side of the second main guide rail 8, and mainly plays a role in braking with the second main guide rail 8, so that the car can play a role in protection when the car is overspeed; further, the first safety gear 70 and the second safety gear 80 are connected through the linkage shaft 60, so that the first safety gear 70 and the second safety gear 80 can run simultaneously; further, the first safety gear 70 and the second safety gear 80 are connected together to a first speed limiter, which is used to control the first safety gear 70 and the second safety gear 80 to operate synchronously, so as to realize simultaneous operation.

Preferably, in combination with the above solution, as shown in fig. 1 to 4, in this embodiment, a third safety gear and a fourth safety gear are arranged in parallel at the middle position of the other side of the bottom of the car 10; the third safety gear is arranged on the lift car 10 and positioned on the side edge of the third main guide rail on the opposite side of the first main guide rail 7, and the third safety gear mainly plays a role in braking with the third main guide rail so as to play a role in protection when the lift car exceeds the speed; the fourth safety gear is arranged on the car 10 and is positioned on the side edge of the fourth main guide rail on the opposite side of the second main guide rail 8, and the fourth safety gear mainly plays a role in braking with the fourth main guide rail so as to play a role in protection when the car exceeds the speed; the third safety gear and the fourth safety gear are connected through a linkage shaft, so that the third safety gear and the fourth safety gear can run simultaneously; furthermore, a third safety gear and a fourth safety gear are connected with a second speed limiter together, and the second speed limiter is used for controlling the third safety gear and the fourth safety gear to synchronously operate, so that simultaneous operation is realized.

In the scheme, a braking force dispersing scheme with four safety tongs in linkage is adopted, and the braking force of the safety tongs is dispersed through the design of four rows of main guide rails, so that the technical requirements of a guide system and a safety tong braking system are greatly reduced, and the feasibility of high-speed operation of the large-tonnage elevator is guaranteed; the two sets of safety tongs are controlled by the same speed limiter respectively and are coaxially linked, so that the synchronism of each safety tong during braking is greatly improved, meanwhile, the two sets of safety tongs are arranged in the middle of the lift car side by side, the moment arm L is reduced as far as possible according to M (F) and L, the moment M is smaller under the same condition, namely when the safety tongs act asynchronously, the braking force of the safety tongs which act first enables the lift car to rotate (i.e. incline) is smaller.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.

Claims

1. An automobile elevator can be applied to the existing bus hoisting; the elevator is characterized by comprising a lift car (10), a counterweight (20), a steel wire rope and a driving system (40); the driving system comprises a traction machine, and the traction machine is arranged at the top of the well; the counterweight (20) is arranged on one side of the car (10); the top of the lift car (10) is provided with a main lift car frame (2), a first auxiliary lift car frame (1) and a second auxiliary lift car frame (3), and the main lift car frame (2) is arranged in the middle of the top of the lift car (10); the first auxiliary car frame (1) and the second auxiliary car frame (3) are arranged at the top of the car (10) and are symmetrically positioned at two sides of the main car frame (2) respectively; the steel wire ropes comprise a first steel wire rope (4) and a second steel wire rope (5); one end of the first steel wire rope (4) is fixedly arranged on one side of the top of the well, and the other end of the first steel wire rope (4) sequentially bypasses the first auxiliary car frame (1), the second auxiliary car frame (3), the traction machine and the counterweight (20) and is fixed on the other side of the top of the well; one end of the second steel wire rope (5) is fixedly arranged on one side of the top of the well, and the other end of the second steel wire rope (5) sequentially bypasses the main car frame (2), the second auxiliary car frame (3), the traction machine and the counterweight (20) and is fixed on the other side of the top of the well; the traction machine drives the first steel wire rope (4) and the second steel wire rope (5) to move simultaneously, so that the lift car (10) is driven to move up and down along the vertical direction.

2. The car elevator according to claim 1, characterized in that a first pulley (11) and a second pulley (12) are provided on the first secondary car frame (1), and a third pulley (13) and a first direction-changing pulley (14) are provided on the top of the hoistway above the first secondary car frame (1); a seventh pulley (31) and an eighth pulley (32) are arranged on the second auxiliary car frame (3), and a ninth pulley (33) and a second direction-changing pulley (25) are arranged at the top of the hoistway above the second auxiliary car frame (3); the first direction-changing pulley (14) and the second direction-changing pulley (25) are positioned at the same horizontal height; the first steel wire rope (4) sequentially bypasses the first pulley (11), the third pulley (13), the second pulley (12), the first direction-changing pulley (14), the second direction-changing pulley (25), the seventh pulley (31), the ninth pulley (33), the eighth pulley (32), a traction sheave on the traction machine and a pulley on the counterweight (20) and is fixed on the other side of the top of the shaft.

3. The car elevator according to claim 2, characterized in that on the main car frame (2) there are provided a fourth pulley (21) and a fifth pulley (22); a sixth pulley (23) and a third direction-changing pulley (24) are arranged at the top of the shaft and above the main car frame (2); the third direction-changing pulley (24) is lower than the second direction-changing pulley (25) in the horizontal direction; and the second steel wire rope (5) sequentially bypasses the fourth pulley (21), the sixth pulley (23), the fifth pulley (22), the third direction-changing pulley (24), the second direction-changing pulley (25), the seventh pulley (31), the ninth pulley (33), the eighth pulley (32), a traction sheave on the traction machine and a pulley on the counterweight (20) and is fixed on the other side of the top of the shaft.

4. The car elevator according to claim 2 or 3, characterized in that a tenth sheave (41), an eleventh sheave (42), a twelfth sheave (43) and a thirteenth sheave (44) are provided on the counterweight (20); the tenth pulley (41), the eleventh pulley (42), the twelfth pulley (43), and the thirteenth pulley (44) are arranged side by side in a horizontal direction on the counterweight (20); a fourth direction-changing pulley (45), a fourteenth pulley (46), a fifteenth pulley (47) and a sixteenth pulley (48) are arranged at the top of the hoistway above the counterweight (20); the fourteenth pulley (46), the fifteenth pulley (47) and the sixteenth pulley (48) are arranged side by side in a horizontal direction at the top of the hoistway; the fourth direction-changing pulley (45) is arranged on one side of the traction sheave and is positioned above and to the left of the tenth pulley (41); the first steel wire rope (4) and the second steel wire rope (5) pass through the traction sheave, then pass through the fourth direction-changing pulley (45), the tenth pulley (41), the fourteenth pulley (46), the eleventh pulley (42), the fifteenth pulley (47), the twelfth pulley (43), the sixteenth pulley (48) and the thirteenth pulley (44) in sequence, and are fixed on the other side of the top of the hoistway.

5. The car elevator according to claim 1, characterized in that the hoisting machine is a permanent magnet synchronous hoisting machine fixedly arranged at the top of the hoistway and located between the car (10) and the counterweight (20); the permanent magnet synchronous traction machine drives the lift car to move up and down along the vertical direction at 1.0m/s through the first steel wire rope (4) and the second steel wire rope (5).

6. The car elevator according to claim 1, characterized in that the two sides of the shaft are respectively provided with a first auxiliary guide rail (6) and a second auxiliary guide rail (9) in the vertical direction, and the middle position of the shaft is respectively provided with a first main guide rail (7) and a second main guide rail (8) in the vertical direction; a first guide rail mechanism and a second guide sliding mechanism are arranged on two sides of the lift car (10) along the vertical direction; the first guide sliding mechanism is matched with the first auxiliary guide rail (6) and can slide on the first auxiliary guide rail (6); the second sliding guide mechanism is matched with the second auxiliary guide rail (9) and can slide on the second auxiliary guide rail (9); a third guide rail mechanism and a fourth guide rail mechanism are arranged in the middle of the lift car (10) along the vertical direction; the third guide rail mechanism is matched with the first main guide rail (7) and can slide on the first main guide rail (7); the fourth guide rail mechanism is matched with the second main guide rail (8) and can slide on the second main guide rail (8).

7. The car elevator according to claim 6, characterized in that the first auxiliary guide rails (6) comprise two rows of first auxiliary guide rails, one on each of the opposite sides of the hoistway; and/or the second auxiliary guide rails (9) comprise two rows, and the two rows of second auxiliary guide rails are respectively positioned at two opposite sides of the shaft way; and/or the first main guide rail (7) comprises two rows, and the two rows of the first main guide rails are respectively positioned at two opposite sides of the shaft; and/or the second main guide rail (8) comprises two columns, and the two columns of second main guide rails are respectively positioned at two opposite sides of the shaft.

8. The car elevator according to claim 6, characterized in that a first safety gear (70) and a second safety gear (80) are arranged side by side in the middle of the bottom of the car (10); the first safety gear (70) is arranged on the car (10) and is positioned on the side edge of the first main guide rail (7); the second safety gear (80) is arranged on the car (10) and is positioned on the side edge of the second main guide rail (8); the first safety gear (70) and the second safety gear (80) are connected through a linkage shaft (60), the first safety gear (70) and the second safety gear (80) are connected with a first speed limiter together, and the first speed limiter controls the first safety gear (70) and the second safety gear (80) to synchronously operate.

9. The car elevator according to claim 6, characterized in that a third safety gear and a fourth safety gear are arranged side by side at the middle position of the other side of the bottom of the car (10); the third safety gear is arranged on the car (10) and is positioned on the side edge of a third main guide rail on the opposite side of the first main guide rail (7); the fourth safety gear is arranged on the car (10) and is positioned on the side edge of the fourth main guide rail on the opposite side of the second main guide rail (8); the third safety gear and the fourth safety gear are connected through a linkage shaft, the third safety gear and the fourth safety gear are connected with a second speed limiter together, and the second speed limiter controls the third safety gear and the fourth safety gear to synchronously operate.

10. The car elevator according to claim 1, characterized in that the depth of the car (10) is 14 m; the design load of the car (10) is 16000 kg.