A self-climbing elevator system with self-tensioning of the car

Abstract

This invention discloses a self-tensioning, self-climbing elevator system, comprising: a running guide rail arranged throughout the entire travel of a vertical shaft; a car slidably connected to the running guide rail; a car frame elastically floatingly connected to the car; a car horizontal limiting device symmetrically arranged along the car's centerline and positioned between the car frame and the car; a car vertical limiting device positioned between the car frame and the car; car top pulleys fixed above the car; a traction machine fixed above the car frame, including paired drive pulleys; a top and bottom anti-cord pulley fixed to the top and bottom of the vertical shaft, respectively; several sets of suspension ropes, including a first suspension rope and a second suspension rope; and a suspension rope end-connecting device connecting the suspension ropes and the car frame. This system eliminates the need for additional tensioning weights, utilizing the car's own weight to tension one end of the traction sheave suspension rope, thus reducing the cost of the elevator system.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to a self-climbing elevator system with self-tensioning car. Background Technology

[0002] Traditional elevators use traction motors to lift the car. The traction motor is usually located in the machine room at the top of the shaft or in the space at the top of the shaft. The suspension rope passes around the motor traction sheave, with one end connected to the car and the other end connected to the counterweight. The motor drives the traction sheave to rotate and relies on the friction between the suspension rope and the traction sheave to lift the car and make it move up and down in the shaft.

[0003] The Chinese patent document "A Rope Lifting Elevator System" (publication number CN108861957A) discloses a novel rope lifting elevator system that differs from the traditional system layouts mentioned above. It achieves self-lifting of the elevator car through a drive motor and double-grooved sheave mounted on the elevator car and provides several feasible drive system layouts. However, all layouts suffer from at least two major design flaws, making practical implementation difficult. Flaw one: A large tension block needs to be placed at the bottom of the shaft. To prevent the tension block from swaying vertically or horizontally, limiting and guiding devices to prevent swaying are necessary, significantly increasing costs and affecting maintenance space in the pit. Flaw two: According to Euler's theorem, to ensure sufficient traction force and prevent slippage of the suspension rope on the traction sheave, T1 / T2 <= e. fa Where T1 is the tension force at the end of the traction double-grooved sheave connected to the car, T2 is the tension force at the end of the traction double-grooved sheave connected to the tensioning block, f is the coefficient of friction between the flexible suspension rope and the traction sheave groove, and a is the total wrap angle of the flexible suspension rope around the two traction sheaves. According to the patented solution, assuming the traction wrap angle a = 210 degrees, the coefficient of friction f = 0.35, the mass of the tensioning block is W, the car's self-weight is P = 800 kg, and the rated load is Q = 400 kg, then e fa =3.61, T1 / T2=(W+P+Q) / (W)=1+(P+Q) / W=1+1200 / W<= e fa =3.61, W>=460kg. However, considering that the actual friction coefficient of the contact surface may be affected by factors such as wear and oil contamination, leading to a decrease in the friction coefficient, from a safety perspective, the design of the tension force should take into account possible adverse conditions. For example, if designed with f=0.2, then e fa =2.08, T1 / T2=(W+P+Q) / (W)=1+(P+Q) / W=1+1200 / W<= e fa=2.08, W>=1111kg, therefore, the weight of the tension block must maintain a large design redundancy to ensure that the traction contact surface will not be affected by wear or oil stains, which may lead to safety risks such as ladder slippage. This further leads to increased costs due to the increased weight of the tension block and the increased strength of the wire rope. Summary of the Invention

[0004] This invention solves the problem of increased cost caused by the increased weight of the tensioning block and the increased strength of the wire rope. It proposes a self-tensioning self-climbing elevator system with a car that does not require additional tensioning blocks. Instead, it uses the car's own weight to tension one end of the traction sheave suspension rope, reducing the requirements for the arrangement of components in the vertical shaft pit and lowering the cost of the elevator system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-tensioning, self-climbing elevator system with a car, located within a vertical shaft, comprising...

[0006] A pair of running guides are arranged throughout the entire stroke of the vertical shaft;

[0007] The car is slidably connected to the motion guide rail;

[0008] The car frame is elastically and floatingly connected to the car.

[0009] A horizontal limiting device for the car is symmetrically arranged along the center line of the car and is located between the car frame and the car.

[0010] A vertical limiting device for the car is disposed between the car frame and the car;

[0011] A pair of car roof wheels are fixed above the car.

[0012] A traction machine, fixed above the car frame, includes a pair of drive pulleys;

[0013] The top and bottom anti-rope pulleys of the shaft are fixed to the top and bottom of the vertical shaft, respectively.

[0014] Several sets of suspension ropes, including a first suspension rope and a second suspension rope;

[0015] A suspension rope termination device connects the suspension rope and the car frame.

[0016] In this invention, the car can move up and down along the running guide rails within the vertical shaft. A pair of horizontal limiting devices are installed between the car and the car frame to prevent significant horizontal swaying between the car and the car frame during vertical movement, while allowing free vertical movement between the car and the car frame. A vertical limiting device prevents displacement between the car and the car frame during vertical movement and limits the distance the car and car frame can move freely in the vertical direction. Suspension rope termination devices are installed at both ends of any set of suspension ropes. This elevator system reduces the requirements for the arrangement of components in the vertical shaft pit, improves pit space utilization, and reduces the cost of the elevator system.

[0017] Preferably, the car horizontal limiting device includes elastic rollers and a mechanical fixing device. The elastic rollers are provided in at least several pairs, and include at least one transverse elastic roller that restricts the movement of the car in the width direction and one longitudinal elastic roller that restricts the movement of the car in the depth direction. The elastic rollers are fixedly connected to the mechanical fixing device through axles. The elastic rollers rotate around the axles and roll up and down along the car frame. The mechanical fixing device is fixedly connected to the car.

[0018] Specifically, in this invention, the car horizontal limiting device includes a first longitudinal elastic roller, a transverse elastic roller, a second longitudinal elastic roller, a first longitudinal elastic roller axle, a transverse elastic roller axle, a second longitudinal elastic roller axle, and a mechanical fixing device, wherein the mechanical fixing device is fixed to the car; thereby achieving two objectives: 1. Ensuring that the horizontal movement of the car is restricted within the car frame range, preventing the car from swaying arbitrarily during vertical movement; 2. Ensuring that the car can float freely relative to the car frame in the vertical direction, thereby ensuring that the car can always maintain tension on the first and second suspension ropes within a certain range. When the traction friction is insufficient, the suspension ropes bypassing the first and second drive wheels can slip relative to the drive wheels, thereby increasing the tension at one end of the first and second drive wheels, maintaining the overall traction capacity of the system, and ensuring that the entire car and car frame will not slip, thus preventing the elevator from slipping.

[0019] Preferably, the vertical limiting device for the car includes several elastic buffers and mechanical limiting structures. The vertical limiting device for the car is fixedly connected to the car, and the mechanical limiting structure is connected to the car frame. After the car and the car frame reach the limit distance in the vertical direction, the elastic buffers lock the mechanical limiting structure.

[0020] In this invention, the vertical limiting device for the car can ensure that the car will not slip between the suspension rope and the first and second drive wheels due to insufficient traction, causing the car to detach too far from the car frame and creating other systemic risks. The elastic buffer can be non-metallic rubber or a spring. After the car and the car frame reach the limit distance in the vertical direction, the elastic buffer will limit the car from further detaching from the car frame in the vertical direction.

[0021] Preferably, the running guide rail includes a first guide rail and a second guide rail. The connecting line between the first guide rail and the second guide rail in the same horizontal plane is set as the guide rail center line. The guide rail center line is perpendicular to the car center line. The first guide rail and the second guide rail are symmetrically arranged with respect to the car center line.

[0022] In this invention, the center lines of the guide rails are established in the same horizontal plane of the vertical shaft, and the center line of the car is determined in the same horizontal plane of the vertical shaft along the direction perpendicular to the car door opening direction. The center line of the car and the center line of the guide rails are arranged perpendicularly.

[0023] Preferably, the traction machine includes a plurality of drive wheels and a motor, wherein the drive wheels include a first drive wheel and a second drive wheel that are symmetrically arranged on the left and right sides of the car centerline.

[0024] In this invention, the number of traction machines can be one or two. When there are two traction machines, there is a first traction machine and a second traction machine, which are arranged symmetrically on the left and right sides along the center line of the car. The first traction machine includes a first drive wheel and a first motor, and the second traction machine includes a second drive wheel and a second motor. During the up and down movement of the car, the first drive wheel and the second drive wheel always rotate in opposite directions.

[0025] Preferably, the car top pulley includes a first car top pulley and a second car top pulley symmetrically arranged with respect to the center line of the car, and the first car top pulley and the second car top pulley rotate in opposite directions during operation; the top anti-rope pulley of the hoistway includes a left anti-rope pulley and a right anti-rope pulley of the top hoistway symmetrically arranged with respect to the center line of the car, and the bottom anti-rope pulley includes a left anti-rope pulley and a right anti-rope pulley of the bottom hoistway symmetrically arranged with respect to the center line of the car.

[0026] In this invention, during the car's up and down movement, the first car top wheel and the second car top wheel always rotate in opposite directions; one end of the top anti-rope wheel and the bottom anti-rope wheel of the hoistway are fixedly connected to the top or bottom of the vertical hoistway, specifically, they are fixed by the rotating shaft of the anti-rope wheel, while the anti-rope wheel can rotate.

[0027] Preferably, the suspension rope includes a first suspension rope and a second suspension rope symmetrically arranged relative to the center line of the car; when the rope ratio is 2:1, one side of the first suspension rope is fixed above the car frame, goes up along the vertical shaft and around the top left counter-rope pulley of the shaft, then goes down along the vertical shaft and around the first drive wheel, then around the second car top wheel, then around the second drive wheel, then down along the vertical shaft and around the bottom right counter-rope pulley of the shaft, and then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame.

[0028] In this invention, the number of suspension ropes on the left or right side can be a single set or multiple sets. When the rope winding ratio is 2:1, it is a single set arrangement. The winding method of the second suspension rope is similar to that of the first suspension rope, and both are symmetrically distributed. Specifically, one end of the second suspension rope is placed at the top of the car frame, goes upward along the vertical direction of the hoistway, passes over the right counter-rope pulley at the top of the hoistway, then goes downward along the vertical direction of the hoistway, passes over the second drive wheel, then passes over the first car top wheel, then passes over the second driving wheel, then goes downward along the vertical direction of the hoistway, then passes over the right counter-rope pulley at the bottom of the hoistway, then goes upward along the vertical direction of the hoistway, and finally is fixed to the bottom of the car frame.

[0029] Preferably, when the rope ratio is 4:1, it also includes a left and right anti-rope pulley at the bottom of the car, which are symmetrically arranged relative to the center line of the car. The left and right anti-rope pulleys at the bottom of the car are fixed to the bottom of the car frame.

[0030] In this invention, when the rope winding ratio is 4:1, the suspension rope needs to pass through a partial anti-rope pulley and a drive pulley twice.

[0031] Preferably, when the rope ratio is 4:1, one side of the first suspension rope is fixed above the car frame, goes up along the vertical shaft and around the top left counter-rotating rope sheave of the shaft, then goes down along the vertical shaft and around the first drive wheel, then goes up along the vertical shaft and around the top left counter-rotating rope sheave of the shaft again, then goes down along the vertical shaft and around the first drive wheel again, then around the second car top wheel, then around the second drive wheel, then goes down along the vertical shaft and around the bottom right counter-rotating rope sheave of the shaft, then around the bottom right counter-rotating rope sheave of the car, then goes down along the vertical shaft and around the bottom right counter-rotating rope sheave of the shaft again, and then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame.

[0032] In this invention, when the rope winding ratio is 4:1, the winding method of the second suspension rope is similar to that of the first suspension rope, and the winding methods of both are symmetrically distributed. The specific winding methods will not be described in detail.

[0033] Preferably, the suspension rope termination device includes a car top suspension rope termination device and a car bottom suspension rope termination device. The car top suspension rope termination device includes a symmetrically arranged car top left suspension rope termination device and a car top right suspension rope termination device, and the car bottom suspension rope termination device includes a symmetrically arranged car bottom left suspension rope termination device and a car bottom right suspension rope termination device. One end of the suspension rope termination device is fixed above the car frame, and the other end of the suspension rope termination device is fixed below the car frame.

[0034] In this invention, each suspension rope termination device includes a mechanical fixing structure, a suspension rope locking structure, and an elastic tensioning component. The suspension rope termination devices are respectively set at both ends of any suspension rope, with one end fixed to the top of the car frame by the mechanical fixing structure and the other end fixed to the bottom of the car frame by the mechanical fixing structure.

[0035] The beneficial effects of this invention are as follows: The self-tensioning, self-climbing elevator system of this invention eliminates the need for additional tensioning weights. Instead, it utilizes the car's own weight to tension one end of the traction sheave suspension rope, reducing the requirements for vertical shaft pit component layout, improving pit space utilization, and lowering elevator system costs. The tension force provided by the car's own weight is not fixed. Under normal elevator conditions, the tension force provided by the car's own weight is related to the initial actual friction coefficient and wrap angle of the traction sheave. The higher the initial actual friction coefficient, the lower the tension force from the car's own weight. When the friction coefficient of the traction sheave decreases significantly due to uncontrollable external factors, the car suspension rope slips on the traction sheave, causing the car to sink moderately, further tensioning and increasing the tension force. This allows for adjustment of the tension force to a certain extent, ensuring the effective operation of the entire elevator system. Attached Figure Description

[0036] Figure 1 This is a front view of Embodiment 1 of a self-climbing elevator system with self-tensioning car according to this application;

[0037] Figure 2 This is a schematic top view of Embodiment 1 of a self-tensioning self-climbing elevator system for the car according to this application;

[0038] Figure 3 This is a schematic top view of another embodiment of a self-tensioning self-climbing elevator system of the present application;

[0039] Figure 4 This is a schematic diagram of the structure of the car horizontal limiting device, car, and car frame in Embodiment 1 of the self-tensioning self-climbing elevator system of this application;

[0040] Figure 5 This is a schematic diagram of the structure of the car vertical limiting device, car, and car frame in Embodiment 1 of the self-tensioning self-climbing elevator system of this application.

[0041] Figure 6 This is a front view of embodiment 2 of the self-climbing elevator system with self-tensioning car according to this application;

[0042] Figure 7 This is an enlarged schematic diagram of the structure of the car horizontal limiting device, car, and car frame in Embodiment 1 of the self-tensioning self-climbing elevator system of this application.

[0043] The components include: 1. Car frame; 2. Car; 3. First guide rail; 4. Second guide rail; 5. Guide rail centerline; 6. Car centerline; 7. Car horizontal limiting device; 8. Car vertical limiting device; 9. Mechanical limiting structure; 10. Elastic buffer; 21. Left counter-rope sheave at the top of the hoistway; 22. Right counter-rope sheave at the top of the hoistway; 23. First suspension rope; 24. Second suspension rope; 25. Left side suspension end device on the car top; 26. Right side suspension end device on the car top; 27. First drive wheel; 28. Second drive wheel; 29. ​​First car... 30. Top wheel; 31. Second car top wheel; 32. Left side suspension end connection device of car bottom; 33. Right side suspension end connection device of car bottom; 34. Left reverse rope sheave at the bottom of the shaft; 35. Right reverse rope sheave at the bottom of the shaft; 36. Left reverse rope sheave at the bottom of the car; 37. Traction machine; 38. Motor; 71. First longitudinal elastic roller; 72. Lateral elastic roller; 73. Second longitudinal elastic roller; 74. First longitudinal elastic roller axle; 75. Lateral elastic roller axle; 76. Second longitudinal elastic roller axle; 77. Mechanical fixing device. Detailed Implementation

[0044] Example 1:

[0045] This embodiment proposes a self-tensioning, self-climbing elevator system located within a vertical shaft, referencing... Figure 1 , Figure 4 , Figure 5 and Figure 7 The system includes a pair of running guide rails arranged throughout the entire travel of the vertical shaft; a car 2 slidably connected to the running guide rails; a car frame 1 elastically floatingly connected to the car 2; a car horizontal limiting device 7 symmetrically arranged along the car centerline 6 and positioned between the car frame 1 and the car 2; a car vertical limiting device 8 positioned between the car frame 1 and the car 2; a pair of car top pulleys, both fixed above the car 2; a traction machine 37 fixed above the car frame 1, including a pair of drive pulleys; a top anti-rope pulley and a bottom anti-rope pulley, respectively fixed to the top and bottom of the vertical shaft; several sets of suspension ropes, including a first suspension rope 23 and a second suspension rope 24; and a suspension rope end-connecting device connecting the suspension ropes and the car frame 1.

[0046] refer to Figure 4 and Figure 7The car horizontal limiting device 7 includes elastic rollers and mechanical fixing device 77. The elastic rollers are provided in at least several pairs, including at least one transverse elastic roller that restricts the movement of the car in the width direction and one longitudinal elastic roller that restricts the movement of the car in the depth direction. The elastic rollers are fixedly connected to the mechanical fixing device 77 through axles. The elastic rollers rotate around the axles and roll up and down along the car frame 1. The mechanical fixing device 77 is fixedly connected to the car 2.

[0047] refer to Figure 5 The vertical limiting device 8 of the car includes several elastic buffers 10 and mechanical limiting structures 9. The vertical limiting device 8 of the car is fixedly connected to the car 2, and the mechanical limiting structure 9 is connected to the car frame 1. After the car 2 and the car frame 1 reach the limit distance in the vertical direction, the elastic buffers 10 lock the mechanical limiting structure 9.

[0048] refer to Figure 2 , Figure 3 and Figure 4 The running guide rail includes a first guide rail 3 and a second guide rail 4. The connecting line of the first guide rail 3 and the second guide rail 4 in the same horizontal plane is set as the guide rail center line 5. The guide rail center line 5 is perpendicular to the car center line 6. The first guide rail 3 and the second guide rail 4 are symmetrically arranged with respect to the car center line 6.

[0049] refer to Figure 2 and Figure 3 The traction machine 37 includes several drive wheels and a motor. The drive wheels include a first drive wheel 27 and a second drive wheel 28 that are symmetrically arranged about the left and right of the car centerline 6.

[0050] refer to Figure 1 and Figure 4 The car top pulleys include a first car top pulley 29 and a second car top pulley 30 symmetrically arranged with respect to the car centerline 6. The first car top pulley 29 and the second car top pulley 30 rotate in opposite directions during operation. The top anti-rope pulleys of the hoistway include a left anti-rope pulley 21 and a right anti-rope pulley 22 symmetrically arranged with respect to the car centerline 6. The bottom anti-rope pulleys of the hoistway include a left anti-rope pulley 33 and a right anti-rope pulley 34 symmetrically arranged with respect to the car centerline 6.

[0051] refer to Figure 1 The suspension ropes include a first suspension rope 23 and a second suspension rope 24 symmetrically arranged relative to the center line 6 of the car. When the rope winding ratio is 2:1, one side of the first suspension rope 23 is fixed above the car frame 1, goes up along the vertical shaft and passes over the top left anti-rope pulley 21 of the shaft, then goes down along the vertical shaft and passes over the first drive wheel 27, then passes over the second car top wheel 30, then passes over the second drive wheel 28, then goes down along the vertical shaft and passes over the bottom right anti-rope pulley 34 of the shaft, and then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame 1.

[0052] refer to Figure 1 The suspension rope termination device includes a car top suspension rope termination device and a car bottom suspension rope termination device. The car top suspension rope termination device includes a symmetrically arranged car top left suspension rope termination device 25 and car top right suspension rope termination device 26. The car bottom suspension rope termination device includes a symmetrically arranged car bottom left suspension rope termination device 32 and car bottom right suspension rope termination device 26. One end of the suspension rope termination device is fixed above the car frame 1, and the other end of the suspension rope termination device is fixed below the car frame 1.

[0053] In this invention, the car can move up and down along the running guide rails within the vertical shaft. A pair of horizontal limiting devices are installed between the car and the car frame to prevent significant horizontal swaying between the car and the car frame during vertical movement, while allowing free vertical movement between the car and the car frame. A vertical limiting device prevents displacement between the car and the car frame during vertical movement and limits the distance the car and car frame can move freely in the vertical direction. Suspension rope termination devices are installed at both ends of any set of suspension ropes. This elevator system reduces the requirements for the arrangement of components in the vertical shaft pit, improves pit space utilization, and reduces the cost of the elevator system.

[0054] In this invention, specifically, refer to Figure 7 The car horizontal limiting device 7 includes a first longitudinal elastic roller 71, a transverse elastic roller 72, a second longitudinal elastic roller 73, a first longitudinal elastic roller axle 74, a transverse elastic roller axle 75, a second longitudinal elastic roller axle 76, and a mechanical fixing device 77. The mechanical fixing device 77 is fixed to the car. The first longitudinal elastic roller axle 74, the transverse elastic roller axle 75, and the second longitudinal elastic roller axle 76 are respectively fixed to the mechanical fixing device 77. The first longitudinal elastic roller 71, the transverse elastic roller 72, and the second longitudinal elastic roller 73 can respectively rotate around the first longitudinal elastic roller axle 74, the transverse elastic roller axle 75, and the second longitudinal elastic roller axle 76. The longitudinal elastic roller axle 76 rotates, thereby achieving two purposes: 1. Ensuring that the horizontal movement of the car is restricted within the car frame range, preventing the car from swaying arbitrarily during vertical movement; 2. Ensuring that the car can float freely relative to the car frame in the vertical direction, thereby ensuring that the car can always maintain tension on the first and second suspension ropes within a certain range. When the traction friction is insufficient, the suspension ropes that bypass the first and second drive wheels can slip relative to the drive wheels, thereby increasing the tension at one end of the first and second drive wheels, maintaining the overall traction capacity of the system, and ensuring that the entire car and car frame will not slip, thus preventing the elevator from slipping.

[0055] In this invention, the car vertical limiting device ensures that the car will not detach too far from the car frame due to slippage between the suspension rope and the first and second drive wheels when the traction force is insufficient, thus preventing other systemic risks. The elastic buffer can be non-metallic rubber or a spring. After the car and car frame reach their vertical limit distance, the elastic buffer will restrict the car from further detaching from the car frame in the vertical direction. The car vertical limiting device 8 can be... Figure 5 The arrangement shown is on the top of the car; similarly, it can be arranged at the bottom of the car in a similar manner.

[0056] In this invention, the center lines of the guide rails are established in the same horizontal plane of the vertical shaft, and the center line of the car is determined in the same horizontal plane of the vertical shaft along the direction perpendicular to the car door opening direction. The center line of the car and the center line of the guide rails are arranged perpendicularly.

[0057] In this invention, the number of traction machines can be one or two. When there are two traction machines, it includes a first traction machine and a second traction machine, which are arranged symmetrically along the center line of the car. The first traction machine includes a first drive wheel and a first motor, and the second traction machine includes a second drive wheel and a second motor. During the up-and-down movement of the car, the first drive wheel and the second drive wheel always rotate in opposite directions. For the case of one traction machine, please refer to [reference needed]. Figure 2 For cases with two traction machines, please refer to the following: Figure 3 .

[0058] In this invention, during the car's up and down movement, the first car top wheel and the second car top wheel always rotate in opposite directions; one end of the top anti-rope wheel and the bottom anti-rope wheel of the hoistway are fixedly connected to the top or bottom of the vertical hoistway, specifically, they are fixed by the rotating shaft of the anti-rope wheel, while the anti-rope wheel can rotate.

[0059] In this invention, the number of suspension ropes on the left or right side can be a single set or multiple sets. When the rope winding ratio is 2:1, it is a single set arrangement. The winding method of the second suspension rope is similar to that of the first suspension rope, and both are symmetrically distributed. Specifically, one end of the second suspension rope is placed at the top of the car frame, goes upward along the vertical direction of the hoistway, passes over the right counter-rope pulley at the top of the hoistway, then goes downward along the vertical direction of the hoistway, passes over the second drive wheel, then passes over the first car top wheel, then passes over the second driving wheel, then goes downward along the vertical direction of the hoistway, then passes over the right counter-rope pulley at the bottom of the hoistway, then goes upward along the vertical direction of the hoistway, and finally is fixed to the bottom of the car frame.

[0060] In this invention, each suspension rope termination device includes a mechanical fixing structure, a suspension rope locking structure, and an elastic tensioning component. The suspension rope termination devices are respectively set at both ends of any suspension rope, with one end fixed to the top of the car frame by the mechanical fixing structure and the other end fixed to the bottom of the car frame by the mechanical fixing structure.

[0061] Example 2:

[0062] All other things being equal, refer to Figure 6 When the rope ratio is 4:1, it also includes a left anti-rope wheel 35 and a right anti-rope wheel 36 at the bottom of the car, which are symmetrically arranged relative to the center line 6 of the car. The left anti-rope wheel 35 and the right anti-rope wheel 36 at the bottom of the car are fixed below the car frame 1.

[0063] In this invention, when the rope winding ratio is 4:1, the suspension rope needs to pass through a portion of the anti-reverse rope sheave and the drive sheave twice. Specifically, passing through the top left anti-reverse rope sheave, the top right anti-reverse rope sheave, the first drive sheave, the second drive sheave, the bottom left anti-reverse rope sheave, and the bottom right anti-reverse rope sheave all require two passes.

[0064] refer to Figure 6 When the rope ratio is 4:1, one side of the first suspension rope 23 is fixed above the car frame 1, goes up along the vertical shaft and around the top left reverse rope sheave 21 of the shaft, then goes down along the vertical shaft and around the first drive wheel 27, then goes up along the vertical shaft and around the top left reverse rope sheave 21 of the shaft again, then goes down along the vertical shaft and around the first drive wheel 27 again, then goes down along the vertical shaft and around the second car top wheel 30, then around the second drive wheel 28, then goes down along the vertical shaft and around the bottom right reverse rope sheave 34 of the shaft, then around the bottom right reverse rope sheave 36 of the car, then goes down along the vertical shaft and around the bottom right reverse rope sheave 34 of the shaft again, and then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame 1.

[0065] In this invention, when the rope winding ratio is 4:1, the winding method of the second suspension rope is similar to that of the first suspension rope. Both rope winding methods are symmetrically distributed. One side of the second suspension rope 24 is fixed above the car frame 1, and it goes up along the vertical shaft and around the top right anti-reverse rope pulley 22 of the shaft. Then it goes down along the vertical shaft and around the second drive wheel 28. Then it goes up along the vertical shaft and around the top right anti-reverse rope pulley 22 of the shaft again. Then it goes down along the vertical shaft and around the second drive wheel 28 again. Then it goes around the first car top wheel 29. Then it goes around the first drive wheel 27. Then it goes down along the vertical shaft and around the bottom left anti-reverse rope pulley 33 of the shaft. Then it goes around the bottom left anti-reverse rope pulley 35 of the car. Then it goes down along the vertical shaft and around the bottom left anti-reverse rope pulley 33 of the shaft again. Then it goes up along the vertical shaft and is fixedly connected to the bottom of the car frame 1.

[0066] The suspension rope in this invention can be a round steel wire rope or a flat steel strip.

[0067] The above embodiments are further elaborations and descriptions of the present invention to facilitate understanding, and are not intended to limit the present invention in any way. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-climbing elevator system with self-tensioning of the car in a vertical shaft, characterized in that, include A pair of running guides are arranged throughout the entire stroke of the vertical shaft; The car is slidably connected to the running guide rails; The car frame is flexibly and floatingly connected to the car body. The car horizontal limiting device is symmetrically arranged along the center line of the car and is located between the car frame and the car; A vertical limiting device for the car is installed between the car frame and the car. A pair of car roof wheels are fixed above the car. The traction machine, fixed above the car frame, includes a pair of drive pulleys; The top and bottom anti-rope sheaves of the shaft are fixed to the top and bottom of the vertical shaft, respectively. Several sets of suspension ropes, including a first suspension rope and a second suspension rope; Suspension rope termination device, connecting the suspension rope and the car frame; The car horizontal limiting device includes elastic rollers and a mechanical fixing device. The elastic rollers are provided in at least several pairs, including at least one transverse elastic roller that restricts the car's movement in the width direction and one longitudinal elastic roller that restricts the car's movement in the depth direction. The elastic rollers are fixed to the mechanical fixing device via axles. The elastic rollers rotate around the axles and roll up and down along the car frame. The mechanical fixing device is fixedly connected to the car. The car vertical limiting device includes several elastic buffers and mechanical limiting structural components. The car vertical limiting device is fixed to the car, and the mechanical limiting structural components are connected to the car frame. After the car and car frame reach their vertical limit distance, the elastic buffers engage the mechanical limiting structural components. The car horizontal limiting device includes a first longitudinal elastic roller, a transverse elastic roller, a second longitudinal elastic roller, a first longitudinal elastic roller axle, a transverse elastic roller axle, a second longitudinal elastic roller axle, and a mechanical fixing device. The mechanical fixing device is fixed to the car. The first longitudinal elastic roller axle, the transverse elastic roller axle, and the second longitudinal elastic roller axle are respectively fixed to the mechanical fixing device. The first longitudinal elastic roller, the transverse elastic roller, and the second longitudinal elastic roller rotate around the first longitudinal elastic roller axle, the transverse elastic roller axle, and the second longitudinal elastic roller axle, respectively.

2. A self-climbing elevator system with self-tensioning of the car according to claim 1, characterized in that The running guide rail includes a first guide rail (3) and a second guide rail (4). The connecting line between the first guide rail (3) and the second guide rail (4) in the same horizontal plane is set as the guide rail center line (5). The guide rail center line (5) is perpendicular to the car center line (6). The first guide rail (3) and the second guide rail (4) are symmetrically arranged on the left and right sides with respect to the car center line (6).

3. A self-climbing elevator system with self-tensioning of the car according to claim 1, characterized in that The traction machine (37) includes several drive wheels and a motor. The drive wheels include a first drive wheel (27) and a second drive wheel (28) that are symmetrically arranged on the left and right sides of the car centerline (6).

4. A self-climbing elevator system with self-tensioning of the car according to claim 3, characterized in that The car top wheel includes a first car top wheel (29) and a second car top wheel (30) symmetrically arranged with respect to the center line (6) of the car. The first car top wheel (29) and the second car top wheel (30) rotate in opposite directions during operation. The top anti-rope wheel of the hoistway includes a left anti-rope wheel (21) and a right anti-rope wheel (22) symmetrically arranged with respect to the center line (6) of the car. The bottom anti-rope wheel of the hoistway includes a left anti-rope wheel (33) and a right anti-rope wheel (34) symmetrically arranged with respect to the center line (6) of the car.

5. A self-climbing elevator system with self-tensioning of the car according to claim 4, characterized in that The suspension ropes include a first suspension rope (23) and a second suspension rope (24) symmetrically arranged on the left and right sides relative to the car centerline (6); when the rope winding ratio is 2:1, one side of the first suspension rope (23) is fixed above the car frame (1), goes up along the vertical shaft and passes over the top left anti-rope pulley (21) of the shaft, then goes down along the vertical shaft and passes over the first drive wheel (27), then passes over the second car top wheel (30), then passes over the second drive wheel (28), then goes down along the vertical shaft and passes over the bottom right anti-rope pulley (34) of the shaft, and then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame (1).

6. A self-climbing elevator system with self-tensioning of the car according to claim 4, characterized in that When the rope ratio is 4:1, it also includes a left anti-rope wheel (35) and a right anti-rope wheel (36) symmetrically arranged with respect to the car centerline (6), and the left anti-rope wheel (35) and the right anti-rope wheel (36) are fixed below the car frame (1).

7. A self-climbing elevator system with self-tensioning of the car according to claim 6, characterized in that When the rope ratio is 4:1, one side of the first suspension rope (23) is fixed above the car frame (1), goes up along the vertical shaft and passes over the top left anti-rope pulley (21) of the shaft, then goes down along the vertical shaft and passes over the first drive wheel (27), then goes up along the vertical shaft and passes over the top left anti-rope pulley (21) of the shaft again, then goes down along the vertical shaft and passes over the first drive wheel (27) again, then passes over the second car top wheel (30), then passes over the second drive wheel (28), then goes down along the vertical shaft and passes over the bottom right anti-rope pulley (34) of the shaft, then passes over the bottom right anti-rope pulley (36), then goes down along the vertical shaft and passes over the bottom right anti-rope pulley (34) of the shaft again, then goes up along the vertical shaft and is fixedly connected to the bottom of the car frame (1).

8. A self-climbing elevator system with self-tensioning of the car according to claim 1, characterized in that The suspension rope termination device includes a car top suspension rope termination device and a car bottom suspension rope termination device. The car top suspension rope termination device includes a symmetrically arranged car top left suspension rope termination device (25) and car top right suspension rope termination device (26). The car bottom suspension rope termination device includes a symmetrically arranged car bottom left suspension rope termination device (32) and car bottom right suspension rope termination device (26). One end of the suspension rope termination device is fixed above the car frame (1), and the other end of the suspension rope termination device is fixed below the car frame (1).

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