Horizontal keeping device for inclined elevator car

Abstract

The utility model discloses a horizontal keeping device for an inclined elevator car, and belongs to the field of special elevator safety protection facilities. Comprising a pair of lift car supporting disc pivoting supporting frames, a pair of lift car supporting discs, a lift car levelness sensor, a pair of lift car levelness adjusting rope-shaped traction chains, a lift car levelness adjusting rope-shaped traction chain driving mechanism and a pair of corresponding emergency brake devices, and the pair of lift car supporting disc pivoting supporting frames are fixed to the upward side of a lift car chassis; the pair of lift car supporting discs are fixed to the bottom of the lift car, the lift car levelness sensor is arranged at the bottom of the lift car and connected with the electrical controller, the pair of lift car horizontal adjusting rope-shaped traction chains are arranged on the opposite sides of the lift car supporting discs in an accompanying mode, and the lift car horizontal adjusting rope-shaped traction chain driving mechanism is arranged on a lift car chassis. And a corresponding emergency brake device is arranged on the car chassis. The device has the advantages that the horizontal error of the elevator car in operation can be controlled, and the synchronism of the two sides of the elevator car is ensured; the flexibility of multi-dimensional adjustment is embodied; and shaking of the elevator car is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of special elevator safety protection facilities, specifically relating to a horizontal keeping device for inclined elevator cars, used to keep the inclined elevator car running on a variable trajectory track in a horizontal state. Background Technology

[0002] A variable-track inclined elevator refers to a track system that allows the elevator to change its inclination angle or path as needed during operation. Specific scenarios include mountainous or sloping terrain, complex building structures, tourist attractions, industrial facilities such as mines for transporting materials or personnel, and transportation hubs such as subway stations and airports. In short, the variable-track inclined elevator enhances the system's flexibility and efficiency by dynamically adjusting the path and inclination angle, meeting various special and / or complex scenarios.

[0003] In scenarios where the elevator's trajectory changes, a level car in an inclined elevator can lead to the following adverse effects: reduced passenger comfort, as an unlevel car can cause discomfort and affect the riding experience, even causing fear; decreased operational safety, as a level car affects the elevator's stability and safety, increasing operational risks. For example, it may cause the elevator to sway or tilt during operation, potentially leading to accidents; accelerated wear and tear on elevator components, as an unlevel car increases wear on the guide rails, wheel system, and other components, shortening the elevator's service life and increasing maintenance costs; and impaired elevator function, particularly in situations involving wheelchair users, as an unlevel car can hinder wheelchair access. Therefore, ensuring a level car in an inclined elevator is an indispensable and unavoidable factor. The scenarios mentioned above where the track trajectory changes are not limited to horizontal curves (the track bends or turns in the horizontal direction), changes in tilt angle, track intersections or forks (the elevator needs to switch tracks), track connection points (the track has joints between different sections), arched track areas, and so on.

[0004] From a macro design perspective, measures to ensure that the car of an inclined elevator remains level include: adjusting leveling parameters, adjusting the sensing device, increasing the tension of the steel rope, and improving safety devices (such as equipping it with an anti-slip system, safety hook device, etc.).

[0005] Publicly available Chinese patent documents contain technical information aimed at ensuring the levelness of inclined elevator cars. A typical example is CN206345570U, which recommends a "leveling device for inclined elevator cars." This device involves installing a leveling switch at the bottom of the car and an electric push rod controlled by a controller mounted on the car bracket. The electric push rod is connected to one edge of the bottom of the car. Its working mechanism is as follows: when the elevator moves up and down along the track, if the angle changes and causes the car's levelness to exceed a certain angle, the leveling switch sends a corresponding angle change direction signal. This signal drives the electric push rod through the controller, causing the car to move along the track until the car's levelness is within the set range (see paragraph 0011 of the patent specification for details).

[0006] While the CN206345570U described above can achieve the goal of adjusting the level of the inclined elevator car within the design range, it suffers from the following common drawbacks: First, it has poor precision and stability. The gears, lead screws, and other transmission components of the electric actuator have mechanical backlash, which can easily lead to error accumulation when adjusting relatively small level deviations, especially during frequent reversals, resulting in misalignment and an inability to maintain precise levelness. Second, it has insufficient dynamic response capability. When the actuator moves, the switching between static and dynamic friction can cause discontinuous movement, manifesting as shaking or stagnation during adjustment, affecting the smooth correction of levelness. Third, it has poor environmental adaptability. Since the electric actuator has an IP54 or lower protection rating, it is difficult to withstand the intrusion of dust and moisture generated during elevator operation. Utility Model Content

[0007] The objective of this invention is to provide a leveling device for inclined elevator cars that helps to achieve ideal closed-loop control capabilities, thereby preventing the car from being affected by changes in the running trajectory and ensuring good levelness of the elevator car during operation; facilitates excellent multi-dimensional adjustment flexibility by effectively compensating for the dynamic level of the elevator car; helps to eliminate sensitivity to environmental factors such as dust and humidity; and improves the ability to resist the effects of tilting inertia, enabling it to cope with use in harsh environments and preventing elevator car swaying.

[0008] The present invention achieves its objective as follows: a horizontally maintaining device for a inclined elevator car includes a pair of car support plate pivot support frames, a pair of car support plates, a car level sensor, a pair of car level adjustment rope traction chains, a car level adjustment rope traction chain drive mechanism, and a pair of emergency braking devices. The pair of car support plate pivot support frames are fixed to the upward-facing side of the car chassis in a front-to-back correspondence. The pair of car support plates are fixed to the bottom of the elevator car in a front-to-back correspondence between the pair of car support plate pivot support frames and are pivotally supported by the top of the pair of car support plates and the pair of car support plate pivot support frames, thereby keeping the elevator car in a suspended state above the car chassis. A leveling sensor is installed at the bottom of the elevator car and electrically connected to an electrical controller installed on the car chassis. A pair of car leveling rope traction chains are positioned in a front-to-back correspondence with each other, accompanying the opposite sides of the pair of car support plates. The two ends of each pair of car leveling rope traction chains are fixed to the bottom of the elevator car in a left-to-right correspondence, the two sides of the middle section are respectively attached to the pair of car support plates, and the lower part is connected to the car leveling rope traction chain drive mechanism, which is installed on the car chassis. A pair of emergency braking devices are installed on the car chassis at positions corresponding to the lower parts of the pair of car support plates, and the pair of emergency braking devices brake the pair of car support plates.

[0009] Furthermore, in use, the car chassis forms a rolling pair with a pair of guide rails laid on the ground and parallel to each other in the longitudinal direction; the car leveling rope traction chain drive mechanism includes a motor, a gearbox, a first sprocket shaft, a second sprocket shaft, a first sprocket, and a second sprocket. The motor is electrically connected to the electrical controller, and the motor is driven by the gearbox and fixed to the car chassis by the gearbox together with the motor. The front end and rear end of the gearbox output shaft extend out of the gearbox housing. The rear end of the first sprocket shaft is driven by the front end of the gearbox output shaft and rotatably supported on the first sprocket shaft support. The front end of the first sprocket shaft extends downwards corresponding to the front of one of the pair of car leveling rope traction chains. Furthermore, it is configured as a horizontal cantilever end, with the front end of the second sprocket shaft being drively connected to the rear end of the gearbox output shaft and rotatably supported on the second sprocket shaft support seat. The rear end of the second sprocket shaft extends downwards towards the lower end of the rearmost car horizontal adjustment rope traction chain in a pair of car horizontal adjustment rope traction chains and is configured as a horizontal cantilever end. The first sprocket is fixed to the front end of the first sprocket shaft, and the second sprocket is fixed to the rear end of the second sprocket shaft. The first and second sprocket shaft support seats are mounted on the car chassis. The lower part of the frontmost car horizontal adjustment rope traction chain in a pair of car horizontal adjustment rope traction chains is sleeved on the first sprocket, while the lower part of the rearmost car horizontal adjustment rope traction chain in a pair of car horizontal adjustment rope traction chains is sleeved on the second sprocket.

[0010] Furthermore, the motor is a servo motor with forward and reverse rotation functions.

[0011] Furthermore, a car support plate pivot shaft is fixed on each of the opposite sides of the pair of car support plates. The car support plate pivot shaft is rotatably supported on a bearing seat by a bearing, and the bearing seat is fixed on the top of the pair of car support plate pivot support frames.

[0012] Furthermore, the two ends of the pair of car leveling rope traction chains are each fixed to the bottom of the elevator car through chain fixing seats in a left-right corresponding state.

[0013] Furthermore, on each of the two car support plates opposite to each other, there is a support plate boss with a diameter smaller than that of the car support plate and protruding from the surface of the car support plate. The two car horizontal adjustment rope traction chains are kept in a taut state by the abutment of the middle part of the two car horizontal adjustment rope traction chains with the left and right sides of the support plate boss.

[0014] Furthermore, each of the pair of car support discs has a semi-circular disc structure.

[0015] Furthermore, a pair of bottom support posts for the left edge of the elevator car are provided on the upper left side of the car chassis, and a pair of bottom support posts for the right edge of the elevator car are provided on the upper right side of the car chassis, which are also corresponding to each other. The pair of bottom support posts for the left and right edges of the elevator car are corresponding to each other.

[0016] Furthermore, a pair of car chassis rollers are spaced apart on the front and rear sides of the car chassis via chassis roller shafts, and the pair of car chassis rollers and the surfaces of the pair of guide rails form a rolling pair; a pair of anti-rollover wheels are spaced apart on the front and rear sides of the car chassis via anti-rollover wheel frames, and the pair of anti-rollover wheels and the guide rail wall on the outward-facing side of the pair of guide rails form a rolling pair; the pair of emergency braking devices are disc brakes, drum brakes, electromagnetic brakes, hydraulic brakes, or mechanical brakes.

[0017] Furthermore, the cross-sectional shape of the pair of guide rails is I-shaped, T-shaped, L-shaped, U-shaped, rectangular, or circular.

[0018] The technical solution provided by this utility model has the following advantages: First, because it adopts a car level adjustment rope traction chain drive mechanism that can meet the requirements of precise speed and position control, it helps to demonstrate good closed-loop control capability. Furthermore, because the car's posture can be adjusted in real time by feedback from a car level sensor, it can ideally control the horizontal error of the elevator car during operation. Moreover, because it uses a pair of car level adjustment rope traction chains, it can ensure the synchronization of both sides of the elevator car, avoiding tilting caused by imbalance. Second, because it can achieve dynamic level compensation adjustment of the elevator car through multi-point linkage, it demonstrates good flexibility in multi-dimensional adjustment. Third, because the pair of car level adjustment rope traction chains are not sensitive to environmental factors such as dust and humidity, and the car level adjustment rope traction chain drive mechanism has good resistance to inertial influence, it can cope with use in harsh environments and effectively prevent elevator car swaying. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the present invention viewed from the front of the elevator car;

[0020] Figure 2 for Figure 1 A schematic diagram viewed from right to left with a pair of guide rails removed;

[0021] Figure 3 for Figure 1 The diagram shows the state of the elevator car after adjustment, supported on a pair of bottom support columns on the left edge of the elevator car. Detailed Implementation

[0022] Please see Figure 1 and Figure 2 The diagram illustrates the structural system of the automatic car leveling device, comprising a pair of car support plate pivot support frames 4, a pair of car support plates 5, a car level sensor 6, a pair of car leveling adjustment rope traction chains 7, a car leveling adjustment rope traction chain drive mechanism 8, and a pair of emergency braking devices 10. The pair of car support plate pivot support frames 4 are approximately gantry-shaped and fixed to the upward-facing side of the car chassis 2 in a front-to-back correspondence. The pair of car support plates 5 are located between the aforementioned pair of car support plate pivot support frames 4 (i.e., between the opposing sides of the pair of car support plate pivot support frames 4) and fixed to the bottom of the elevator car 3 in a front-to-back correspondence. The system is further defined by the pair of car support plates 5 and the pair of car support plates pivoting. The top pivot support of the pivot support frame 4 allows the elevator car 3 to be positioned above the car chassis 2 in a free-floating state. A car level sensor 6 is located at the bottom of the elevator car 3 and is electrically connected to an electrical controller 9 mounted on the car chassis 2. A pair of car leveling rope traction chains 7 are positioned in a front-to-back configuration, accompanying the opposite sides of the pair of car support plates 5. The two ends of each pair of car leveling rope traction chains 7 are fixed to the bottom of the elevator car 3 in a left-to-right configuration. The middle two sides are abutted against the pair of car support plates 5, and the lower part is connected to the car leveling rope traction chain drive mechanism 8, which is mounted on the car chassis 2. A pair of emergency braking devices 10 are positioned below the pair of car support plates 5 on the car chassis 2, and these emergency braking devices 10 brake the pair of car support plates 5.

[0023] The aforementioned car level sensor 6 converts the tilt angle of the elevator car 3 into an electrical signal, thus it can be called the "sensing organ" of the inclined elevator level adjustment system. It works in conjunction with components such as the motor 81 and gearbox 82 of the car level adjustment rope traction chain drive mechanism 8 (described below) to form a closed-loop control of perception, decision-making, and execution, ensuring that the elevator car remains level throughout the complex track. Regarding the car level sensor 6, this invention does not require a specific sensor type, as any of the following can be used: fiber optic tilt sensor, gyroscope-assisted sensor, electrolyte tilt sensor, or liquid capacitive sensor. Of course, similar level sensors not mentioned above can also be used.

[0024] The applicant needs to explain that the reason for mentioning a pair of car level adjustment rope-like traction chains 7 above is to indicate that the aforementioned chains of this utility model have two ends, thus creating an essential difference from the endless ring (loop) chain. It is precisely to distinguish them from the endless ring chain that this utility model uses the term "rope-like" in the corresponding reference numerals. To put it more figuratively, the pair of car level adjustment rope-like traction chains 7 in this utility model, when in use, resemble the effect of a "necklace" worn by people, or a necklace-like form. The only difference is that the two ends are fixed to the bottom wall of the elevator car 3 on the same straight line, and when a necklace is worn, the two ends are fastened together.

[0025] In use, the aforementioned car chassis 2 forms a rolling pair with a pair of guide rails 1 laid on the ground and parallel to each other in the longitudinal direction. The aforementioned emergency brake device 10, also known as an "anti-accident brake device," detects whether the car leveling rope traction chain 7 has broken. Because if the car leveling rope traction chain 7 breaks, it will cause an unsafe risk. Therefore, the emergency brake device clamps the pair of car support plates 5 to ensure that the elevator car 3 will not overturn.

[0026] exist Figures 1 to 3 The image also shows the top box 32 at the top of the elevator car 3. The top box 32 is designed to facilitate safe, reliable and convenient maintenance of elevator equipment by maintenance personnel, as important components such as the control system and electrical system are usually housed inside the top box 32.

[0027] Please pay attention. Figure 2 And combined Figure 1The aforementioned car leveling rope traction chain drive mechanism 8 includes a motor 81, a reduction gearbox 82, a first sprocket shaft 83, a second sprocket shaft 84, a first sprocket 85, and a second sprocket 86. The motor 81 is electrically connected to the aforementioned electrical controller 9. The motor 81 is driven by the reduction gearbox 82 and is fixed to the aforementioned car chassis 2 by the reduction gearbox 82 together with the motor. The front end and rear end of the reduction gearbox output shaft 821 of the reduction gearbox 82 extend out of the gearbox body. The rear end of the first sprocket shaft 83 is driven by the front end of the aforementioned reduction gearbox output shaft 821 and is rotatably supported on the first sprocket shaft support seat 831. The front end of the first sprocket shaft 83 extends downwards corresponding to the front of the aforementioned pair of car leveling rope traction chains 7 and is configured as a horizontal cantilever end. The front end of the second sprocket shaft 84... The first sprocket 83 is connected to the rear end of the gearbox output shaft 821 and is rotatably supported on the second sprocket shaft support 841. The rear end of the second sprocket shaft 84 extends downwards in the direction corresponding to the rearmost car horizontal adjustment rope traction chain of the pair of car horizontal adjustment rope traction chains 7 and is configured as a horizontal cantilever end. The first sprocket 85 is fixed to the front end of the first sprocket shaft 83, and the second sprocket 86 is fixed to the rear end of the second sprocket shaft 84. The aforementioned first and second sprocket shaft support seats 831 and 841 are provided on the aforementioned car chassis 2. The lower part of the frontmost car horizontal adjustment rope traction chain of the pair of car horizontal adjustment rope traction chains 7 is sleeved on the first sprocket 85, while the lower part of the rearmost car horizontal adjustment rope traction chain of the pair of car horizontal adjustment rope traction chains 7 is sleeved on the second sprocket 86.

[0028] In this embodiment, the aforementioned motor 81 is a servo motor with forward and reverse rotation functions.

[0029] The applicant should clarify that the aforementioned first sprocket shaft 83 and second sprocket shaft 84 can be combined into a single shaft by the gearbox output shaft 821; alternatively, the front end of the gearbox output shaft 821 can be connected to the first sprocket shaft 83, and similarly, the rear end of the gearbox output shaft 821 can be connected to the second sprocket shaft 84. In the former case, there is essentially only one shaft, while in the latter case, there are essentially two shafts. In short, the shaft transmission relationship from the gearbox output shaft 821 to the first sprocket 85 and the second sprocket 86 can take many different forms, and therefore, the aforementioned forms should not be construed as a unique limitation of this utility model.

[0030] On each of the opposite sides of the aforementioned pair of car support discs 5, there is a car support disc pivot shaft 51. The car support disc pivot shaft 51 is rotatably supported on the bearing seat 5111 by the bearing 5111, and the bearing seat 5111 is fixed to the top of the aforementioned pair of car support disc pivot support frames 4.

[0031] Depend on Figure 1 and Figure 2 As shown, the two ends of the aforementioned pair of car level adjustment rope traction chains 7 are each fixed to the bottom of the aforementioned elevator car 3 in a left-right corresponding state through chain fixing seats 71.

[0032] In order to achieve a good tensioning effect for the pair of car leveling rope traction chains 7, this utility model has a support plate boss 52 with a diameter smaller than the diameter of the car support plate 5 and protruding from the surface of the car support plate 5 on the side facing outwards of the pair of car support plates 5. The pair of car leveling rope traction chains 7 are in a tensioned state by the abutment of the middle part of the aforementioned pair of car leveling rope traction chains 7 with the left and right sides of the aforementioned support plate boss 52.

[0033] Depend on Figure 1 and Figure 2 As shown, each of the aforementioned pair of car support plates 5 has a semi-circular structure. That is to say, each pair of car support plates 5 is half of the entire disc and is approximately D-shaped.

[0034] See you later Figure 1 and Figure 2 A pair of elevator car left edge bottom support limit posts 21 are provided on the upper left side of the aforementioned car chassis 2, which are corresponding to each other. A pair of elevator car right edge bottom support limit posts 22 are provided on the upper right side of the aforementioned car chassis 2. The pair of elevator car left edge bottom support limit posts 21 and the pair of elevator car right edge bottom support limit posts 22 are corresponding to each other.

[0035] A pair of car chassis rollers 23 are provided at intervals on the front and rear sides of the aforementioned car chassis 2 via chassis roller shafts 231. The pair of car chassis rollers 23 and the surfaces of the aforementioned pair of guide rails 1 form a rolling pair. In this embodiment, the cross-sectional shape of the pair of guide rails is I-shaped, but it can also be T-shaped, L-shaped, U-shaped, rectangular, circular or other equivalent shapes.

[0036] A pair of anti-rollover wheels 24 are provided at intervals on the front and rear sides of the car chassis 2 via anti-rollover wheel frames 241. The pair of anti-rollover wheels 24 and the guide rail wall on the outward side of the aforementioned pair of guide rails 1 form a rolling pair.

[0037] In this embodiment, the aforementioned pair of emergency braking devices 10 are disc brakes, but drum brakes, electromagnetic brakes, hydraulic brakes, mechanical brakes, or other equivalent brakes may also be used. Since the structures of the brakes exemplified above fall within the scope of conventional technical structures, the applicant will not elaborate further.

[0038] Please see Figure 3 And combined Figure 1 and Figure 2 The applicant briefly describes the application of this utility model, based on the foregoing description and the information provided. Figures 1 to 3 As shown in the diagram and based on common sense, the adjustment of the elevator car 3 to the left or right depends on the sensing of the car level sensor 6, which feeds the signal back to the electrical controller 9. The electrical controller 9 then sends a counterclockwise (elevator car 3 adjusts to the left) or clockwise (elevator car 3 adjusts to the right) signal to the motor 81 until the elevator car 3 is in a level state. This level state also depends on the default value or set value range of the car level sensor 6.

[0039] When the elevator car 3, which is tilted to the right, needs to be leveled, the aforementioned car level sensor 6 first sends a signal back to the electrical controller 9, which then sends a working command to the motor 81. The motor 81 operates, driving the reduction gearbox 82. The reduction gearbox 82 reduces speed, and its output shaft 821 simultaneously drives the first and second sprocket shafts 83 and 84. The first and second sprocket shafts 83 and 84 synchronously drive the first and second sprockets 85 and 86, respectively. The first and second sprockets 85 and 86 simultaneously drive a pair of car leveling rope traction chains 7, thereby adjusting the elevator car 3, which was originally tilted to the right, to a level position. Figure 3 The state shown. When adjusting for the opposite situation, simply reverse the rotation direction of motor 81.

[0040] In summary, the technical solution provided by this utility model makes up for the shortcomings of the existing technology, and has an excellent automatic horizontal adjustment effect when applied to inclined elevators where the track running trajectory changes. It has successfully completed the invention task and faithfully realized the technical effects described by the applicant in the above technical effect column.

Claims

1. A diagonal elevator car level keeping device, characterized by: The invention comprises a pair of car support disc pivot support frames (4), a pair of car support discs (5), a car levelness sensor (6), a pair of car levelness adjustment rope-like traction chains (7), a car levelness adjustment rope-like traction chain driving mechanism (8), and a pair of emergency brake devices (10). The pair of car support disc pivot support frames (4) are fixed to the upper side of the car chassis (2) in a front-to-back corresponding state. The pair of car support discs (5) are fixed to the bottom of the elevator car (3) in a front-to-back corresponding state between the pair of car support disc pivot support frames (4) and are pivotally supported by the top of the pair of car support disc pivot support frames (4) to allow the elevator car (3) to be located above the car chassis (2) in a floating state. The car levelness sensor (6) is provided on the bottom of the elevator car (3) and is electrically connected to the electrical controller (9) provided on the car chassis (2). The pair of car levelness adjustment rope-like traction chains (7) are provided on the opposite sides of the pair of car support discs (5) in a front-to-back corresponding state. The two ends of the pair of car levelness adjustment rope-like traction chains (7) are fixed to the bottom of the elevator car (3) in a left-to-right corresponding state. The middle portions of the pair of car levelness adjustment rope-like traction chains (7) are in contact with the pair of car support discs (5). The lower portions of the pair of car levelness adjustment rope-like traction chains (7) are connected to the car levelness adjustment rope-like traction chain driving mechanism (8) provided on the car chassis (2). The pair of emergency brake devices (10) are provided on the car chassis (2) below the pair of car support discs (5) and brake the pair of car support discs (5).

2. The diagonal elevator car level keeping device according to claim 1, characterized in that: The car chassis (2) forms a rolling pair with a pair of guide rails 1 laid on the ground and parallel to each other in the length direction in use; the car horizontal adjustment rope-like traction chain driving mechanism (8) comprises a motor (81), a reduction box (82), a first sprocket shaft (83), a second sprocket shaft (84), a first sprocket (85) and a second sprocket (86), the motor (81) is electrically connected with the electrical controller (9), the motor (81) is in transmission cooperation with the reduction box (82) and is fixed on the car chassis (2) together with the motor (81) and the reduction box (82), the front end and the rear end of the reduction box output shaft (821) of the reduction box (82) each protrude from the box body of the reduction box (82), the rear end of the first sprocket shaft (83) is in transmission connection with the front end of the reduction box output shaft (821) and is rotatably supported on the first sprocket shaft support seat (831), the front end of the first sprocket shaft (83) extends towards the direction corresponding to the lower side of the front one of the pair of car horizontal adjustment rope-like traction chains (7) and is constructed as a horizontal cantilever end, the front end of the second sprocket shaft (84) is in transmission connection with the rear end of the reduction box output shaft (821) and is rotatably supported on the second sprocket shaft support seat (841), the rear end of the second sprocket shaft (84) extends towards the direction corresponding to the lower side of the rear one of the pair of car horizontal adjustment rope-like traction chains (7) and is constructed as a horizontal cantilever end, the first sprocket (85) is fixed on the front end of the first sprocket shaft (83), the second sprocket (86) is fixed on the rear end of the second sprocket shaft (84); the first and second sprocket shaft support seats (831, 841) are arranged on the car chassis (2); the lower part of the front one of the pair of car horizontal adjustment rope-like traction chains (7) is sleeved on the first sprocket (85), and the lower part of the rear one of the pair of car horizontal adjustment rope-like traction chains (7) is sleeved on the second sprocket (86).

3. The diagonal elevator car level keeping device according to claim 2, characterized in that: The motor (81) is a servo motor with forward and reverse rotation functions.

4. The diagonal elevator car level keeping device of claim 1, wherein: A car supporting disc pivot shaft (51) is fixed on each of the opposite sides of the pair of car supporting discs (5), the car supporting disc pivot shaft (51) is rotatably supported on a bearing seat (5111) through a bearing (511), and the bearing seat (5111) is fixed on the top of the pair of car supporting disc pivot support frames (4).

5. The diagonal elevator car level keeping device of claim 1, wherein: The two end points of the pair of car horizontal adjustment rope-like traction chains (7) are each fixed to the bottom of the elevator car (3) in a left-right corresponding state through a chain fixing seat (71).

6. The diagonal elevator car level keeping device according to claim 1 or 4, characterized in that: The pair of car supporting discs (5) are each provided with a supporting disc disc boss (52) on the side opposite to each other, which has a diameter smaller than that of the car supporting disc (5) and is protruded from the surface of the car supporting disc (5), and the pair of car horizontal adjusting rope-like traction chains (7) are in a tensioned state by the abutting of the middle part of the car horizontal adjusting rope-like traction chains (7) to the left and right side surfaces of the supporting disc disc boss (52).

7. The diagonal elevator car level keeping device according to claim 6, characterized in that: The pair of car supporting discs (5) are each in a half disc shape.

8. The diagonal elevator car level keeping device of claim 1, wherein: A pair of elevator car left edge bottom supporting limiting columns (21) corresponding to each other in front and back are arranged on the upper left end of the car bottom disc (2), and a pair of elevator car right edge bottom supporting limiting columns (22) corresponding to each other in front and back are arranged on the upper right end of the car bottom disc (2), and the pair of elevator car left and right edge bottom supporting limiting columns (21, 22) correspond to each other in left and right.

9. The diagonal elevator car level keeping device of claim 2, wherein: A pair of car bottom disc rollers (23) are arranged on the front side and the back side of the car bottom disc (2) through the bottom disc roller shaft (231) at intervals, and the pair of car bottom disc rollers (23) form a rolling pair with the surface of the pair of guide rails (1); a pair of anti-overturning wheels (24) are arranged on the front side and the back side of the car bottom disc (2) through the anti-overturning wheel frame (241) at intervals, and the pair of anti-overturning wheels (24) form a rolling pair with the guide rail wall of the outer side of the pair of guide rails (1); the pair of emergency brake devices (10) are disc brakes, drum brakes, electromagnetic brakes, hydraulic brakes or mechanical brakes.

10. The diagonal elevator car level keeping device according to claim 9, characterized in that: The cross-sectional shape of the pair of guide rails is in an I shape, a T shape, an L shape, a U shape, a rectangle or a circle. The pair of car supporting discs (5) are each provided with a supporting disc disc boss (52) on the side opposite to each other, which has a diameter smaller than that of the car supporting disc (5) and is protruded from the surface of the car supporting disc (5), and the pair of car horizontal adjusting rope-like traction chains (7) are in a tensioned state by the abutting of the middle part of the car horizontal adjusting rope-like traction chains (7) to the left and right side surfaces of the supporting disc disc boss (52).

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