Single-electric-motor dual-rail driven elevator

Abstract

A single-electric-motor dual-rail driven elevator, comprising guide rails, a car frame (70) and a driving device, wherein the driving device comprises a mounting bracket (60), an electric motor (10), driving wheels and a speed reducer, two sides of the electric motor (10) being provided with a first output end (12) and a second output end (13), which respectively drive a first driving wheel (20a) and a second driving wheel (20b) on two sides to move on a first guide rail (30a) and a second guide rail (30b) on the two sides. In the elevator, the two driving wheels corresponding to the two guide rails share one electric motor, such that the structure is more compact, costs are lower, and synchronous rotation of the driving wheels on two sides can be ensured. The first driving wheel and the second driving wheel on two sides can be simultaneously used for driving; when one of the first driving wheel and the second driving wheel is damaged, the other can still provide driving force, thereby achieving higher safety. In addition, the driving device uses a single-electric-motor drive solution, such that a control system is simpler.

Description

Single-motor double-track drive elevator TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator equipment, and in particular to a single-motor double-track drive elevator. BACKGROUND

[0002] The self-driven track elevator directly drives the elevator car to run up and down by using a driving wheel, without the need to set a counterweight, a traction or a traction cable, and the hoistway is simple in layout, high in hoistway utilization rate, and beautiful in appearance. The lifting speed and lifting height are not limited. In addition, the tire can reduce vibration and noise, has small wear and low noise, runs smoothly and comfortably, and has low maintenance cost by driving the driving wheel through tire friction. Chinese patent 202311684339.3 discloses a self-driven elevator. In the driving device disclosed in the patent document, the driving wheel and the driving source are installed on the mounting bracket to form a driving unit, and the driving device is composed of the left driving unit and the right driving unit. The above-mentioned driving device is composed of two independent driving units. When the outputs of the two driving units are out of synchronization, damage may occur. In addition, there is still optimization space in volume for the two independent driving units. In addition, the two independent driving units need to be coordinated when driving, resulting in a complex control system. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a single-motor double-track drive elevator to solve the above problems in the prior art.

[0004] A single-motor double-track drive elevator, comprising:

[0005] A guide rail, comprising a first guide rail and a second guide rail;

[0006] A car frame, which is limited to run along the guide rail;

[0007] A driving device, comprising a mounting bracket, a motor, a driving wheel, and a speed reducer; wherein the output shaft of the motor has a first output end and a second output end, the first output end is located on the first side of the motor, the second output end is located on the second side of the motor, and the first side and the second side are opposite sides of the motor; the driving wheel comprises a first driving wheel and a second driving wheel, the first driving wheel is arranged on the first side of the motor and is power connected with the first output end of the motor; the second driving wheel is arranged on the second side of the motor and is power connected with the second output end of the motor; the first driving wheel moves on the first guide rail, and the second driving wheel moves on the second guide rail; the speed reducer comprises a first speed reducer and a second speed reducer, the first speed reducer is arranged on the first side of the motor and located between the first output end of the motor and the first driving wheel; the second speed reducer is arranged on the second side of the motor and located between the second output end of the motor and the second driving wheel;

[0008] The first guide rail is located at a first side of the motor, and the first driving wheel is pressed against the first guide rail. The second guide rail is located at a second side of the motor, and the second driving wheel is pressed against the second guide rail. The car frame is connected to the mounting bracket of the driving device to move up and down along the guide rail.

[0009] Optionally, the driving device further comprises a connecting arm, and a first connecting part on the connecting arm is movably connected to the car frame, and a second connecting part on the connecting arm is movably connected to the mounting bracket of the driving device.

[0010] Optionally, the driving device further comprises a limiting wheel assembly, and the limiting wheel assembly comprises a first limiting wheel assembly and a second limiting wheel assembly, and each of the first limiting wheel assembly and the second limiting wheel assembly comprises a plurality of limiting wheels. The first limiting wheel assembly and the second limiting wheel assembly are mounted on the mounting bracket of the driving device. The first limiting wheel assembly acts on the first guide rail, and the second limiting wheel assembly acts on the second guide rail.

[0011] The first limiting wheel assembly and the first driving wheel press against the first guide rail in opposite directions, and the second limiting wheel assembly and the second driving wheel press against the second guide rail in opposite directions.

[0012] Optionally, the mounting bracket comprises a first mounting arm, a second mounting arm, a third mounting arm, and a fourth mounting arm.

[0013] The first mounting arm is arranged at an axially first side of the first driving wheel, and the second mounting arm is arranged at an axially second side of the first driving wheel.

[0014] The third mounting arm is arranged at an axially first side of the second driving wheel, and the fourth mounting arm is arranged at an axially second side of the second driving wheel.

[0015] Each of the first mounting arm and the second mounting arm is provided with a first limiting wheel assembly, and each of the third mounting arm and the fourth mounting arm is provided with a second limiting wheel assembly.

[0016] Optionally, the guide rail has a guide rail groove with one side open, and the guide rail groove is surrounded by a plurality of guide rail walls. The car frame is provided with a guide limiting device, and the guide limiting device comprises a support and a plurality of limiting rollers arranged on the support, and the limiting rollers are at least partially accommodated in the guide rail groove. The plurality of limiting rollers are arranged in multiple directions, and the limiting rollers in different directions press against the guide rail walls in corresponding directions to limit the car frame on the guide rail.

[0017] Optionally, the guide limiting device is arranged close to a top of the car frame and close to a bottom of the car frame.

[0018] For the guiding and limiting device near the top of the car frame, a limiting slot is arranged on the car frame to allow the support to slide into it from top to bottom, and a bolt is arranged on the upper half of the support to fixedly connect the support to the car frame.

[0019] For the guiding and limiting device near the bottom of the car frame, a limiting slot is arranged on the car frame to allow the support to slide into it from bottom to top, and a bolt is arranged on the lower half of the support to fixedly connect the support to the car frame.

[0020] Optionally, for the guiding and limiting device near the top of the car frame, the limiting slot is arranged at the bottom of the support to limit the bottom edge of the support.

[0021] For the guiding and limiting device near the bottom of the car frame, the limiting slot is arranged at the top of the support to limit the top edge of the support.

[0022] Optionally, the car frame comprises a car bottom and a rear seat support, the car bottom is used to form the bottom of the car space, and the rear seat support is located at the rear side of the car bottom; a limiting roller is arranged on the rear seat support to guide and limit the movement of the rear seat support along the guide rail.

[0023] A detachable connection relationship is arranged between the car bottom and the rear seat support, and the connecting part of the detachable connection relationship is exposed on the inner side of the car bottom to enable the detachable connection relationship to be installed and detached from the inner side of the car bottom.

[0024] Optionally, the car frame further comprises a car top support and a lifting piece, the car top support is located at the top of the car space and is fixed with the rear seat support at the rear side thereof, the upper end of the lifting piece is connected to the front side of the car top support, and the lower end of the lifting piece is connected to the front side of the car bottom.

[0025] Optionally, the car top support comprises a frame formed by two longitudinal beams and two transverse beams, the two transverse beams are located at opposite positions and extend in the left-right direction, and the two longitudinal beams are located at opposite positions and extend in the front-rear direction; the frame forms the four peripheral edges of the car top support, and one lifting piece is arranged on each of the left and right sides of the frame.

[0026] A post is arranged above each of the two longitudinal beams near the rear side of the frame; a diagonal member is arranged between the longitudinal beam and the corresponding post, the first end of the diagonal member is connected to the post, and the second end is connected to a position on the longitudinal beam in front.

[0027] The application provides a double-track structure elevator, which has a first output end and a second output end on two sides of a motor, and drives a first driving wheel and a second driving wheel on the two sides to move on a first guide rail and a second guide rail on the two sides respectively. In the technical scheme, the two driving wheels corresponding to the two guide rails share one motor, so that the structure is more compact, the cost is lower, the weight is lighter, and synchronous rotation of the driving wheels on the two sides can be ensured. The first driving wheel and the second driving wheel on the two sides can be simultaneously used for driving, one of which is damaged, the other can still provide driving force, and the safety is higher. In addition, the driving device adopts a single-motor driving scheme, and the control system is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 is a structural schematic diagram of a single-motor double-track driving elevator in the embodiment of the application.

[0029] Fig. 2 is an internal sectional view of a driving device in the embodiment of the application.

[0030] Fig. 3 is a structural schematic diagram of a driving device in the embodiment of the application.

[0031] Fig. 4 is another structural schematic diagram of a single-motor double-track driving elevator in the embodiment of the application.

[0032] Fig. 5 is a partial structural schematic diagram of a single-motor double-track driving elevator in the embodiment of the application.

[0033] Fig. 6 is a structural schematic diagram of a limiting wheel assembly in the embodiment of the application.

[0034] Fig. 7 is another structural schematic diagram of a single-motor double-track driving elevator in the embodiment of the application.

[0035] Fig. 8 is an enlarged view of A in Fig. 7.

[0036] Fig. 9 is a structural schematic diagram of a guide rail in the embodiment of the application.

[0037] Fig. 10 is a structural schematic diagram of a guide limiting device in the embodiment of the application.

[0038] Fig. 11 is a structural schematic diagram of a car frame in the embodiment of the application.

[0039] Fig. 12 is an enlarged view of B1 in Fig. 11.

[0040] Fig. 13 is an enlarged view of B2 in Fig. 11.

[0041] Fig. 14 is a corresponding exploded schematic diagram of Fig. 13.

[0042] Fig. 15 is another structural schematic diagram of a car frame in the embodiment of the application.

[0043] Fig. 16 is an enlarged view of C in Fig. 15.

[0044] Fig. 17 is an exploded view corresponding to Fig. 16.

[0045] Fig. 18 is another structural schematic diagram of the single-motor double-rail driven elevator in the embodiment of the application.

[0046] Fig. 19 is another structural schematic diagram of the single-motor double-rail driven elevator in the embodiment of the application.

[0047] Reference signs: motor 10, output shaft 11, first output end 12, second output end 13, first drive wheel 20a, second drive wheel 20b, wheel hub 21, tire 22, first guide rail 30a, second guide rail 30b, guide rail groove 31, guide rail wall 32, first guide rail wall 321, second guide rail wall 322, third guide rail wall 323, first speed reducer 40a, second speed reducer 40b, first brake 50a, second brake 50b, mounting bracket 60, first mounting arm 61, second mounting arm 62, third mounting arm 63, fourth mounting arm 64, car frame 70, limiting groove 71, first bolt 72, mounting surface 73, positioning plate 74, oblique cutout 741, guide limiting device 75, support 751, limiting roller 752, car floor 76, second bolt 761, car roof support 77, cross beam 771, longitudinal beam 772, vertical column 773, connecting seat 774, inclined pull member 775, rear seat support 78, car vertical column 781, pull member 79, first limiting wheel assembly 80a, second limiting wheel assembly 80b, movable support 81, limiting wheel 82, connecting arm 90. DETAILED DESCRIPTION

[0048] The following is a specific embodiment of the application and further describes the technical solutions of the application in conjunction with the drawings, but the application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, in the interests of clarity and conciseness, descriptions of known functions and structures are omitted.

[0049] It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict.

[0050] Referring to Fig. 1, the single-motor double-rail driven elevator includes guide rails, a car frame 70, and a drive device, wherein the guide rails include a first guide rail 30a and a second guide rail 30b; the car frame 70 is defined to run along the guide rails. The drive device is used to drive the car frame 70 to run along the guide rails.

[0051] Referring to FIGS. 2 and 3, the driving device comprises a mounting bracket 60, a motor 10, driving wheels, and a speed reducer; wherein the output shaft 11 of the motor 10 has a first output end 12 and a second output end 13, the first output end 12 is located at a first side of the motor 10, the second output end 13 is located at a second side of the motor 10, and the first side and the second side are opposite sides of the motor 10; the driving wheels comprise a first driving wheel 20a and a second driving wheel 20b, the first driving wheel 20a is arranged at the first side of the motor 10 and is in power connection with the first output end 12 of the motor 10; the second driving wheel 20b is arranged at the second side of the motor 10 and is in power connection with the second output end 13 of the motor 10; the first driving wheel 20a moves on a first guide rail 30a, and the second driving wheel 20b moves on a second guide rail 30b; the speed reducer comprises a first speed reducer 40a and a second speed reducer 40b, the first speed reducer 40a is arranged at the first side of the motor 10 and is located between the first output end 12 of the motor 10 and the first driving wheel 20a; the second speed reducer 40b is arranged at the second side of the motor 10 and is located between the second output end 13 of the motor 10 and the second driving wheel 20b.

[0052] Further, the first guide rail 30a is located at the first side of the motor 10, the first driving wheel 20a is pressed against the first guide rail 30a, the second guide rail 30b is located at the second side of the motor 10, and the second driving wheel 20b is pressed against the second guide rail 30b; the car frame is connected to the mounting bracket 60 of the driving device to move up and down along the guide rails following the driving device.

[0053] The motor 10 is a double-output-shaft motor, and the output shaft 11 of the motor extends out of the motor housings on both sides to form two output ends. The two output ends, i.e., the first output end 12 and the second output end 13, can synchronously rotate to output power. At the first side of the motor 10, the first output end 12 rotates to output power, the input end of the first speed reducer 40a is connected with the first output end 12 of the motor, and the output end of the first speed reducer 40a is connected with the first driving wheel 20a, so that when the first output end 12 of the motor rotates to output power, the first speed reducer 40a transmits the power to the first driving wheel 20a, and the first driving wheel 20a moves on the first guide rail 30a. At the second side of the motor, the second output end 13 rotates to output power, the input end of the second speed reducer 40b is connected with the second output end 13 of the motor, and the output end of the second speed reducer 40b is connected with the second driving wheel 20b, so that when the second output end 13 of the motor rotates to output power, the second speed reducer 40b transmits the power to the second driving wheel 20b, and the second driving wheel 20b moves on the second guide rail 30b.

[0054] Further, the first output end 12 and the second output end 13 are two ends of the motor output shaft, and can synchronously output power to synchronously drive the first driving wheel 20a and the second driving wheel 20b on two sides, so that the first driving wheel 20a and the second driving wheel 20b keep synchronous rotation. Referring to FIG. 5, the first driving wheel 20a is pressed against the first guide rail 30a for walking movement on the first guide rail 30a, and the second driving wheel 20b is pressed against the second guide rail 30b for walking movement on the second guide rail 30b. The above driving device, which has the two driving wheels corresponding to the two guide rails sharing the intermediate motor, is more compact in structure, lower in cost, and can guarantee synchronous rotation of the two driving wheels.

[0055] In an embodiment of the present application, the driving device further comprises a brake, and the brake comprises a first brake 50a and a second brake 50b. The first brake 50a acts on the first output end 12 of the motor, and the second brake 50b acts on the second output end 13 of the motor. The brake acts on the output shaft of the motor for braking and stopping of the car. In an embodiment of the present application, the first brake 50a and the second brake 50b are both electromagnetic brakes. The electromagnetic brake can transmit the driving side torque to the passive side connector, and can be freely combined, cut off or braked as needed. The electromagnetic brake has the advantages of compact structure, simple operation, sensitive response, long service life, reliable use, easy to realize remote control, etc. The first brake 50a and the second brake 50b described above can both be used to apply a braking force to the output shaft of the motor, so as to realize braking force redundancy and improve safety. In an embodiment of the present application, the first brake 50a is arranged between the motor and the first speed reducer 40a, and the second brake 50b is arranged between the motor and the second speed reducer 40b.

[0056] Referring to FIG. 2, in an embodiment of the present application, the first driving wheel 20a and the second driving wheel 20b each include a wheel hub 21 and a tire 22, the first speed reducer 40a is accommodated in the wheel hub 21 of the first driving wheel 20a, and the second speed reducer 40b is accommodated in the wheel hub 21 of the second driving wheel 20b. Specifically, the output end of the first speed reducer 40a is connected with the wheel hub 21 of the first driving wheel 20a to drive the wheel hub 21 and the tire 22 of the first driving wheel 20a to rotate. The output end of the second speed reducer 40b is connected with the wheel hub 21 of the second driving wheel 20b to drive the wheel hub 21 and the tire 22 of the second driving wheel 20b to rotate. It should be understood that the tire of the first driving wheel and the tire of the second driving wheel need to ensure sufficient tread width to obtain sufficient driving friction. In the embodiment, the wheel hub extends to the side of the speed reducer to cover the main body of the speed reducer, and the driving wheel is arranged by using the space outside the periphery of the speed reducer. The driving wheel is arranged outside the periphery of the speed reducer, so that the tread of the driving wheel occupies the same width space as the speed reducer. The speed reducer is accommodated in the wheel hub, so that the entire transmission structure is more compact and smaller in size. Further, the first speed reducer and the second speed reducer are planetary speed reducers, which are smaller in size and are beneficial to reduce the volume of the entire elevator driving unit.

[0057] Referring to FIG. 4, the single-motor double-rail driving elevator further includes a connecting arm 90, the first connecting position on the connecting arm 90 is movably connected with the car frame 70, and the second connecting position on the connecting arm 90 is movably connected with the mounting bracket 60 of the driving device. The driving wheels and the car frame 70 are arranged on the same side of the guide rails and are arranged staggered up and down. Under the action of the gravity load of the car frame 70, the connecting arm 90 drives the first driving wheel 20a and the second driving wheel 20b to press against the respective guide rails.

[0058] Specifically, the car frame is limited to run along the guide rails, so that the car frame has only one degree of freedom and cannot be flipped or moved in other directions. Referring to FIG. 4, the connecting arm 90 is movably connected with the car frame and the mounting bracket of the driving device at two ends, so that the connecting arm only bears the force in the length direction. The force applied by the connecting arm to the driving device can make the driving wheels press against the guide rails. When the motor outputs power, the driving wheels rotate to realize the up-and-down movement by means of the friction with the surface of the guide rails. In a technical solution, the movably connection between the connecting arm and the car frame and the mounting bracket is a hinged connection.

[0059] With further reference to FIG. 3 and FIG. 5, the driving device further comprises a limiting wheel assembly, the limiting wheel assembly comprises a first limiting wheel assembly 80a and a second limiting wheel assembly 80b, each of the first limiting wheel assembly 80a and the second limiting wheel assembly 80b comprises a plurality of limiting wheels 82; the first limiting wheel assembly 80a and the second limiting wheel assembly 80b are installed on the mounting bracket 60 of the driving device; the first limiting wheel assembly 80a acts on the first guide rail 30a, and the second limiting wheel assembly 80b acts on the second guide rail 30b; the first limiting wheel assembly 80a and the first driving wheel 20a reversely press the first guide rail 30a, and the second limiting wheel assembly 80b and the second driving wheel 20b reversely press the second guide rail 30b.

[0060] Specifically, the limiting wheel assembly comprises a first limiting wheel assembly and a second limiting wheel assembly, with reference to FIG. 6, the limiting wheel assembly comprises a movable bracket 81 and a plurality of limiting wheels 82, and the plurality of limiting wheels 82 are arranged on the movable bracket 81 and can be used for limiting in multiple directions when installed on the guide rail. In a specific scheme, the mounting bracket 60 comprises a first mounting arm 61, a second mounting arm 62, a third mounting arm 63 and a fourth mounting arm 64, and one limiting wheel assembly is arranged on each mounting arm in correspondence, and the movable bracket is hinged on the corresponding mounting arm, and the limiting wheel clamps the corresponding guide rail with the driving wheel.

[0061] In an embodiment of the present application, the mounting bracket 60 comprises a first mounting arm 61, a second mounting arm 62, a third mounting arm 63 and a fourth mounting arm 64; the first mounting arm 61 is arranged on an axially first side of the first driving wheel 20a, and the second mounting arm 62 is arranged on an axially second side of the first driving wheel 20a; the third mounting arm 63 is arranged on an axially first side of the second driving wheel 20b, and the fourth mounting arm 64 is arranged on an axially second side of the second driving wheel 20b; the first mounting arm 61 and the second mounting arm 62 each are provided with a first limiting wheel assembly 80a, and the third mounting arm 63 and the fourth mounting arm 64 each are provided with a second limiting wheel assembly 80b.

[0062] It should be understood that the first mounting arm 61 is arranged on an axially first side of the first driving wheel 20a, and the second mounting arm 62 is arranged on an axially second side of the first driving wheel 20a, and one mounting arm is arranged on each axially side of the first driving wheel, which can make the stress of the first driving wheel more balanced. The third mounting arm 63 is arranged on an axially first side of the second driving wheel 20b, and the fourth mounting arm 64 is arranged on an axially second side of the second driving wheel 20b, and one mounting arm is arranged on each axially side of the second driving wheel, which can make the stress of the second driving wheel more balanced.

[0063] In an embodiment of the present application, a differential gear is arranged between the first output end 12 of the motor 10 and the first driving wheel 20a, or between the second output end 13 of the motor 10 and the second driving wheel 20b. It should be understood that the differential gear can allow a speed difference between the first driving wheel and the second driving wheel during operation, and can avoid operation resistance caused by a diameter deviation of the two driving wheels, and can achieve adaptive distribution of driving force of the two driving wheels.

[0064] According to the structure shown in FIGS. 1-6 and the above description, the output shaft of the motor has a first output end and a second output end, which respectively drive the first driving wheel and the second driving wheel on the two sides, the first driving wheel moves on the first guide rail, and the second driving wheel moves on the second guide rail. The two driving wheels corresponding to the two guide rails share one motor, which is more compact in structure, lower in cost, lighter in weight, and can ensure synchronous rotation of the two driving wheels. In addition, the first driving wheel and the second driving wheel on the two sides are used for driving at the same time, and when one of them is damaged, the other can still provide driving force, which is safer. In addition, the driving device adopts a single motor driving scheme, and the control system is simpler.

[0065] Referring to FIGS. 7 and 8, the guide rail has a guide rail groove 31 open on one side, and the guide rail groove 31 is surrounded by a plurality of guide rail walls 32; the car frame 70 is provided with a guide limiting device 75, and referring to FIG. 10, the guide limiting device 75 includes a support 751 and a plurality of limiting rollers 752, the plurality of limiting rollers 752 are arranged on the support 751, and the limiting rollers 752 are at least partially accommodated in the guide rail groove 31. The plurality of limiting rollers 752 are arranged in multiple directions, and the limiting rollers 752 in different directions respectively press the guide rail walls 32 in the corresponding directions to limit the car frame 70 on the guide rail.

[0066] The guide rail includes a first guide rail 30a and a second guide rail 30b, and the car frame 70 is limited to run along the first guide rail 30a and the second guide rail 30b. For the guide limiting device 75, the plurality of limiting rollers 752 include limiting rollers 752 in multiple directions to achieve limiting in each direction. For any limiting roller 752, part or all of it is accommodated in the guide rail groove 11, so as to fully utilize the internal space of the guide rail to reduce the space occupation of the elevator equipment around the car frame.

[0067] It should be understood that the guide limiting device includes a support and a plurality of limiting rollers, and the plurality of limiting rollers press the guide rail from multiple directions to jointly limit the car frame on the guide rail. The guide limiting device is arranged around the car frame, and the internal recess of the guide rail is utilized to accommodate the guide limiting device, so as to obtain a more compact structure. In FIGS. 7 and 8, the internal space of the guide rail groove 31 is shown by a dashed box.

[0068] Referring to FIGS. 8 and 9, the guide rail has a first guide rail wall 321, a second guide rail wall 322, and a third guide rail wall 323. The first guide rail wall 321 and the second guide rail wall 322 are arranged in opposite positions in a transverse direction, and the third guide rail wall 323 is arranged in a longitudinal direction between the first guide rail wall 321 and the second guide rail wall 322, and a guide rail groove 11 is formed by the first guide rail wall 321, the second guide rail wall 322, and the third guide rail wall 323. Specifically, the cross-sectional shape of the first guide rail 10 is H-shaped or h-shaped.

[0069] In the guide rail structure shown in FIGS. 8 and 9, the first guide rail wall 321 and the second guide rail wall 322 are arranged in opposite positions in a transverse direction and are substantially parallel to each other, and the third guide rail wall 323 is arranged in a longitudinal direction to connect the first guide rail wall 321 and the second guide rail wall 322, thereby forming an H-shaped structure. In a specific structural scheme, the third guide rail wall 323 is perpendicular to the first guide rail wall 321 and the second guide rail wall 322. Further, the first guide rail can be an H-shaped steel or an I-shaped steel.

[0070] In the embodiments of the present application, the support is detachably mounted on the car frame. The plurality of limiting rollers of the guide limiting device are accommodated in the guide rail groove, and the plurality of limiting rollers on the support can be maintained and replaced by detaching the support. It should be understood that the limiting rollers of the guide limiting device are consumable parts and need to be regularly maintained and replaced. Since the limiting rollers of the guide limiting device are mounted in the guide rail groove, and the space of the shaft is limited, it is very difficult to disassemble and assemble the limiting rollers. In some structures, the entire car frame needs to be detached to disassemble and assemble the limiting rollers, which is a very large workload.

[0071] Referring to FIG. 11, in an embodiment of the present application, the guide limiting device 75 is arranged near the top of the car frame 70 and near the bottom of the car frame 70. In the structure shown in FIG. 11, two guide limiting devices 75 are arranged near the top of the car frame 70 to cooperate with the first guide rail 30a and the second guide rail 30b, respectively, and two guide limiting devices 75 are arranged near the bottom of the car frame 70 to cooperate with the first guide rail 30a and the second guide rail 30b, respectively. In the structure shown in this scheme, the guide limiting device 75 is arranged near the top and the bottom of the car frame 70, which facilitates the relevant personnel to disassemble and assemble the guide limiting device from the top or the bottom of the car frame.

[0072] With reference to Fig. 12, for the guiding and limiting device 75 at the position close to the top of the car frame 70, a limiting groove 71 is arranged on the car frame 70, which can allow the support 751 to slide into from top to bottom, and a bolt is arranged on the upper half of the support 751 to fixedly connect the support 751 to the car frame 70. When the support is installed, the support 751 is slid into the limiting groove 71 from top to bottom, and when it reaches the predetermined position, the first bolt 72 is installed to completely fixedly connect the support 751 to the car frame 70, and the support 751 is fixed by the first bolt 72 and the limiting groove 71. When the support is disassembled, the first bolt 72 is disassembled first, and then the support 751 is moved out of the limiting groove 71 upward. In the structure shown in this scheme, the first bolt 72 is arranged on the upper half of the support 751, which is closer to the top edge of the car frame 70, so that it is more convenient for the relevant personnel to disassemble and assemble the bolt from the top of the car frame, and the convenience of disassembly and assembly is improved.

[0073] In an embodiment of the present application, for the guiding and limiting device 75 at the position close to the top of the car frame 70, the limiting groove 71 is arranged on the bottom of the support 751 to limit the bottom edge of the support 751.

[0074] With reference to Fig. 13, for the guiding and limiting device 75 at the position close to the bottom of the car frame 70, a limiting groove 71 is arranged on the car frame 70, which can allow the support 751 to slide into from bottom to top, and a bolt is arranged on the lower half of the support 751 to fixedly connect the support 751 to the car frame 70. When the support is installed, the support 751 is slid into the limiting groove 71 from bottom to top, and when it reaches the predetermined position, the first bolt 72 is installed to completely fixedly connect the support 751 to the car frame 70, and the support 751 is fixed by the first bolt 72 and the limiting groove 71. When the support is disassembled, the first bolt 72 is disassembled first, and then the support 751 is moved out of the limiting groove 71 downward. In the structure shown in this scheme, the first bolt 72 is arranged on the lower half of the support 751, which is closer to the bottom edge of the car frame 70, so that it is more convenient for the relevant personnel to disassemble and assemble the bolt from the bottom of the car frame, and the convenience of disassembly and assembly is improved.

[0075] In an embodiment of the present application, for the guiding and limiting device 75 at the position close to the bottom of the car frame 70, the limiting groove 71 is arranged on the top of the support 751 to limit the top edge of the support 751.

[0076] With reference to Figs. 12-14, in an embodiment of the present application, the support 751 is a plate-shaped structure, which is installed on the installation surface 73 of the car frame 70. A positioning plate 74 is fixed on the installation surface 73, and the positioning plate 74 is provided with a bevel cutout 741 on the edge close to the support 751, which faces the installation surface 73 to form a limiting groove 71 for the edge of the support 751.

[0077] As shown in FIG. 14, the support 751 is in a separated state with the positioning plate 74, and when installed, the support 751 is pushed upward into the limiting groove 71 at the top, and then the corresponding first bolt is installed at a position close to the bottom. The lower side edge of the positioning plate 74 is provided with a bevel cutout 741 facing the mounting surface 73, and the bevel cutout 741 and the mounting surface 73 of the car frame 70 form the limiting groove 71.

[0078] In the structure shown in FIGS. 7-14, the limiting rollers of the guide limiting device are placed in the guide rail groove, and in the guide rail groove, the limiting rollers in different directions respectively press the guide rail walls in the corresponding directions to limit the car frame on the first guide rail. By arranging the limiting rollers in the guide rail groove, the space occupation of the elevator equipment around the car frame is reduced. On the other hand, the installation position and installation method of the guide limiting device are also optimized, the disassembly and assembly difficulty is reduced, and the maintenance and replacement of the limiting rollers are more convenient.

[0079] Referring to FIG. 15, the car frame 70 includes a car bottom 76 and a rear seat support 78, the car bottom 76 is used to constitute the bottom of the car space, and the rear seat support 78 is located at the rear side of the car bottom 76; the rear seat support 78 is provided with limiting rollers for guiding and limiting the movement of the rear seat support 78 along the guide rail.

[0080] Specifically, the inner side space between the car bottom and the car top is the car space for accommodating people and objects transported. The inner side IN of the car bottom is located inside the car space. The rear seat support 78 is located between the car bottom 76 and the guide rail, and the limiting rollers thereon can guide and limit the movement of the rear seat support 78 along the guide rail. The rear seat support can be provided with limiting rollers in multiple directions, and the limiting rollers in multiple directions collectively limit the rear seat support on the guide rail. The car bottom 76 is fixed on the rear seat support and rises and falls with the rear seat support. The limiting rollers here are the limiting rollers contained in the guide limiting device.

[0081] Further referring to FIGS. 12-14, the guide limiting device 75 includes a support 751 and a plurality of limiting rollers 752 arranged on the support 751, the plurality of limiting rollers 752 are arranged in multiple directions, and the limiting rollers 752 in different directions respectively press the guide rail walls 32 in the corresponding directions to limit the rear seat support 78 of the car frame 70 on the guide rail.

[0082] In the self-driven rail elevator, the car frame is used to connect with the driving device, the driving device includes a driving wheel and a driving source, the driving wheel is pressed against the corresponding guide rail, and the driving source is used to drive the driving wheel to rotate to realize movement. Under the driving of the driving device, the rear seat support can realize lifting movement. As shown in FIG. 1, the driving device is located above the car frame, which is connected with the car frame below, and uses the same guide rail for guiding and limiting. Specifically, the driving wheel includes a first driving wheel 20a and a second driving wheel 20b, the guide rail includes a first guide rail 30a and a second guide rail 30b, and the driving source is a motor.

[0083] Further referring to FIG. 16, a detachable connection relationship p is provided between the car bottom 76 and the rear seat support 78, and the connecting component of the detachable connection relationship p is exposed on the inner side of the car bottom 76 to enable the detachable connection relationship to be installed and disassembled from the inner side of the car bottom 76. FIG. 16 shows a schematic view of the car bottom 76 and the rear seat support 78 in a connected state, and FIG. 17 shows a schematic view of the car bottom 76 and the rear seat support 78 in a disassembled state.

[0084] Since the connecting component of the detachable connection relationship p is exposed on the inner side of the car bottom 76, when disassembling and assembling, the construction personnel can disassemble and assemble from the car space, and the design does not need to consider arranging space around the car for disassembly and assembly, and it is more convenient to disassemble and assemble. In an embodiment of the present application, the connecting component of the detachable connection relationship p is a second bolt 761, and the construction personnel can disassemble and assemble the detachable connection relationship p by screwing the second bolt 761 in the car space.

[0085] Referring to FIGS. 15 and 18, in an embodiment of the present application, the rear seat support 78 includes two car columns 781 arranged at intervals, the two car columns 781 correspond to the first guide rail 30a and the second guide rail 30b respectively, and each of the two car columns 781 is provided with a guide limiting device 75 including a limiting roller 752 and is combined with the corresponding guide rail through the respective guide limiting device 75. The car bottom 76 is provided with a detachable connection relationship with the two car columns 781. In a specific scheme, the rear seat support 78 is composed of two independent car columns 781, the two car columns 781 correspond to the two guide rails one by one, and are combined with the corresponding guide rails 50 through the respective guide limiting devices 75. Further, the guide limiting devices 75 are arranged on the upper and lower sides of the two car columns 781.

[0086] Referring to FIG. 15 and FIG. 19, in an embodiment of the present application, the car frame 70 further comprises a roof support 77 and a puller 79, the roof support 77 is located at the top of the car space and fixed with the rear seat support 78 at the rear side thereof, the upper end of the puller 79 is connected to the front side of the roof support 77, and the lower end of the puller 79 is connected to the front side of the car bottom 76. The puller 79 is connected between the car bottom 76 and the roof support 77, used to pull the front side of the car bottom 76, so as to reduce the deformation of the car bottom 76, and the puller can transfer part of the load on the car bottom to the roof support, so as to improve the carrying capacity of the car bottom. In a specific scheme, the puller is in a vertical state.

[0087] Further, the roof support 77 comprises a frame composed of two longitudinal beams 772 and two transverse beams 771, wherein the two transverse beams 771 are located at opposite positions and extend along the left-right direction, and the two longitudinal beams 772 are located at opposite positions and extend along the front-rear direction; the frame constitutes the four peripheral edges of the roof support 77, and each of the left and right sides of the frame is correspondingly provided with a puller 79. In the structure shown in FIG. 15, the puller 79 is connected with the two ends of the front transverse beam 771, and the connection position is located at the corner position of the front transverse beam 771 and the two longitudinal beams 772. In an embodiment of the present application, the puller 79 is an elongated pull rod or a steel wire rope.

[0088] In FIG. 15, the left direction is y+, the right direction is y-, the front direction is x+, and the rear direction is x-, the two transverse beams 771 extend along the left-right direction y, and the two longitudinal beams 772 extend along the front-rear direction x. The two transverse beams 771 and the two longitudinal beams 772 form a frame, which constitutes the four peripheral edges of the roof support 77. Each of the left and right sides of the frame is correspondingly provided with a puller 79, which is used to pull the car bottom upward respectively.

[0089] In an embodiment of the present application, an adjusting member for pre-tightening adjustment of the puller 79 is further provided at the connection between the puller 79 and the roof support 77 and / or the car bottom 76. Specifically, the adjusting member can be a nut, which is threadedly connected with the puller, and the effective length of the puller between the roof support and the car bottom is adjusted by screwing the nut, so that the deformation of the car bottom can be pre-adjusted during installation.

[0090] Further referring to FIG. 15 and FIG. 19, a vertical column 773 is arranged above each of the two longitudinal beams 772 at a position close to the rear side of the frame; a diagonal puller 775 is arranged between the longitudinal beam 772 and the corresponding vertical column 773, the first end of the diagonal puller 775 is connected to the vertical column 773, and the second end is connected to a position on the longitudinal beam 772 in front.

[0091] Specifically, the two upright columns 773 are arranged close to the rear side of the frame and are respectively arranged on the two longitudinal beams 772. The rear end of the diagonal pull member 775 is connected to the upright column 773, and the front end is connected to the longitudinal beam 772. The diagonal pull member 775 can pull the longitudinal beam 772 and can enhance the overall strength of the roof support. In a specific embodiment, the diagonal pull member 775 can be an elongated pull rod or a steel wire rope.

[0092] Referring to FIG. 19, the connecting seat 774 for connecting with the driving device is arranged on the cross beam 771 at the rear side of the frame. In a specific embodiment, the driving device includes a driving wheel and a driving source, the driving wheel is used to press the corresponding guide rail, and the driving source is used to drive the driving wheel to rotate to realize movement. As shown in FIG. 19, the lifting lug is arranged on the cross beam 771 as the connecting seat and is connected with the driving device.

[0093] It should be understood that the self-driving track elevator utilizes the driving wheel to walk on the guide rail to drive the car to ascend and descend, which can be applied in villas and other buildings. The application scene of such small elevator equipment is often very limited in space, and therefore, the shaft space occupation of the elevator needs to be considered in the design. If the shaft space is arranged compactly to improve the utilization rate of the shaft space, the space around the car in the shaft will be narrow, and it is very inconvenient to disassemble and assemble the structures related to the car from the outside of the car.

[0094] Based on the structure shown in FIGS. 15-19, in the elevator equipment, the detachable connection relationship is provided between the car bottom and the rear seat support, and the connecting component of the detachable connection relationship is exposed to the inner side of the car bottom, so that the detachable connection relationship can be installed and disassembled from the inner side of the car bottom, i.e., the car space, and therefore, the peripheral space of the car required for disassembly and assembly is reduced. In addition, since the construction personnel can perform construction in the car during disassembly and assembly, the convenience of disassembly and assembly for the construction personnel is provided. In some embodiments, the car frame further includes a lifting member and a diagonal pull member to improve the carrying capacity of the car frame.

[0095] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0096] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0097] The specific embodiments described herein are merely illustrative of the application. Various modifications or changes can be made to the described embodiments without departing from the spirit of the application.

Claims

1. A single-motor dual-rail drive elevator, characterized by, The utility model relates to a kind of elevator, including: Guide rail, including first guide rail and second guide rail; Car frame is defined along the guide rail operation; Drive device, including mounting bracket, motor, drive wheel, speed reducer;Wherein, the output shaft of the motor has first output end and second output end, the first output end is located in the first side of motor, the second output end is located in the second side of motor, and the first side and the second side are opposite sides of motor;The drive wheel includes first drive wheel and second drive wheel, the first drive wheel is arranged in the first side of motor, and is power connected with the first output end of motor;The second drive wheel is arranged in the second side of motor, and is power connected with the second output end of motor;The first drive wheel moves on the first guide rail, and the second drive wheel moves on the second guide rail;The speed reducer includes first speed reducer and second speed reducer, the first speed reducer is arranged in the first side of motor, and is located between the first output end of motor and the first drive wheel;The second speed reducer is arranged in the second side of motor, and is located between the second output end of motor and the second drive wheel; The first guide rail is located in the first side of motor, and the first drive wheel is pressed to the first guide rail, and the second guide rail is located in the second side of motor, and the second drive wheel is pressed to the second guide rail;The car frame is connected with the mounting bracket of drive device, to follow drive device and move up and down along guide rail.

2. The single-motor dual-rail drive elevator according to claim 1, characterized in that, It further includes connecting arm;First connecting site on the connecting arm is movably connected between the car frame, and second connecting site on the connecting arm is movably connected with the mounting bracket of drive device.

3. The single-motor dual-rail drive elevator according to claim 1, characterized in that, The drive device further includes limit wheel assembly, the limit wheel assembly includes first limit wheel assembly and second limit wheel assembly, and the first limit wheel assembly and the second limit wheel assembly both contain a plurality of limit wheels;The first limit wheel assembly and the second limit wheel assembly are installed on the mounting bracket of drive device;The first limit wheel assembly acts on the first guide rail, and the second limit wheel assembly acts on the second guide rail; The first limit wheel assembly and the first drive wheel reversely press the first guide rail, and the second limit wheel assembly and the second drive wheel reversely press the second guide rail.

4. The single-motor dual-rail drive elevator according to claim 3, characterized in that, The mounting bracket includes first mounting arm, second mounting arm, third mounting arm and fourth mounting arm; The first mounting arm is arranged in the axial first side of the first drive wheel, and the second mounting arm is arranged in the axial second side of the first drive wheel; The third mounting arm is arranged in the axial first side of the second drive wheel, and the fourth mounting arm is arranged in the axial second side of the second drive wheel; First limit wheel assembly is arranged on the first mounting arm and the second mounting arm respectively, and the second limit wheel assembly is arranged on the third mounting arm and the fourth mounting arm respectively.

5. Single-motor double-rail drive elevator according to any of claims 1 - 4, characterized in that, The guide rail has a guide rail groove with one side open, which is surrounded by a plurality of guide rail walls; the car frame is provided with a guide limiting device, which includes a support and a plurality of limiting rollers arranged on the support, and the limiting rollers are at least partially accommodated in the guide rail groove; the plurality of limiting rollers are arranged in multiple directions, and the limiting rollers in different directions respectively press the guide rail walls in the corresponding directions to limit the car frame on the guide rail.

6. The single-motor dual-rail drive elevator according to claim 5, characterized in that, The guide limiting device is arranged near the top of the car frame and near the bottom of the car frame. For the guide limiting device near the top of the car frame, the car frame is provided with a limiting groove capable of sliding the support into it from top to bottom, and a bolt is arranged on the upper half of the support to fixedly connect the support to the car frame. For the guide limiting device near the bottom of the car frame, the car frame is provided with a limiting groove capable of sliding the support into it from bottom to top, and a bolt is arranged on the lower half of the support to fixedly connect the support to the car frame.

7. The single-motor dual-rail drive elevator according to claim 6, characterized in that, For the guide limiting device near the top of the car frame, the limiting groove is arranged at the bottom of the support to limit the bottom edge of the support. For the guide limiting device near the bottom of the car frame, the limiting groove is arranged at the top of the support to limit the top edge of the support.

8. Single-motor double-rail drive elevator according to any of claims 1 - 4, characterized in that, The car frame includes a car bottom and a rear seat support, the car bottom is used to form the bottom of the car space, and the rear seat support is located at the rear side of the car bottom; the rear seat support is provided with a limiting roller for guiding and limiting the movement of the rear seat support along the guide rail; The car bottom and the rear seat support are provided with a detachable connection relationship, and the connecting part of the detachable connection relationship is exposed on the inner side of the car bottom to enable the detachable connection relationship to be installed and detached from the inner side of the car bottom.

9. The single-motor dual-rail drive elevator according to claim 8, characterized in that, The car frame further includes a car top support and a lifting piece, the car top support is located at the top of the car space and is fixed with the rear seat support at the rear side thereof, the upper end of the lifting piece is connected to the front side of the car top support, and the lower end of the lifting piece is connected to the front side of the car bottom.

10. The single-motor double-rail drive elevator according to claim 9, wherein The car top support includes a frame composed of two longitudinal beams and two transverse beams, wherein the two transverse beams are located at opposite positions and extend in the left-right direction, and the two longitudinal beams are located at opposite positions and extend in the front-rear direction; the frame forms the four peripheral edges of the car top support, and each of the left and right sides of the frame is correspondingly provided with a lifting piece; Near the rear side of the frame, a vertical column is arranged above each of the two longitudinal beams; a diagonal puller is arranged between the longitudinal beam and the corresponding vertical column, and the first end of the diagonal puller is connected to the vertical column, and the second end is connected to a position on the longitudinal beam in front.

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