Bogie and vehicle

Abstract

The bogie and vehicle disclosed by the application relate to the technical field of rail transit vehicles, and comprise a frame, rack wheels and wheel pairs. The rack wheels are arranged on the frame through rack driving devices, the rack wheels are arranged in one or more pairs in a horizontal symmetrical manner, each pair of rack wheels is distributed on both sides of the rack strip and is respectively engaged with both sides of the rack strip to guide the vehicle, the symmetrical arrangement of the rack wheels can offset the radial forces received by the rack wheels, thereby reducing the influence on the vehicle and the track during the operation of the vehicle and further improving the safety of the operation of the vehicle. The wheel pairs are arranged in multiple pairs on the frame and are used to cooperate with the track to realize the travel of the vehicle on the track, the flanges of the wheel pairs are arranged on the outer side of the track, i.e. the flanges of the wheel pairs are located on the side where the two wheels are away from each other, under the same track gauge, the scheme of the flanges being arranged on the outside makes the support points of the frame move outward and increases the support width of the frame, thereby improving the carrying capacity of the vehicle and the stability of the operation of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of rail transit vehicle technology, and more specifically, to a bogie and a vehicle. Background Technology

[0002] Typically, conventional rail transit vehicles use wheel-rail adhesion for traction and braking, with a maximum gradient capacity of no more than 6‰. For gradients higher than this, rack and pinion drive is generally used, which involves arranging one or more rack and pinion wheels on the vehicle bogie. These gears mesh with rack and pinion rails laid on the track to provide traction or braking force instead of wheel-rail adhesion, thereby reducing the impact of gradient on traction and braking.

[0003] Different rack and pinion arrangements are suitable for different gradients. For example, vertical rack and pinion drives are generally suitable for gradients of 250‰ to 300‰ or less, while horizontal rack and pinion drives can handle gradients of 300‰ and above, with a maximum of 480‰. However, the operation of rail transit vehicles on extremely steep gradients carries a higher risk of derailment or rollover, resulting in lower operational safety and placing higher demands on the stability of rail transit vehicles.

[0004] Therefore, how to improve the stability of rail transit vehicle operation has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a bogie to improve the stability of rail transit vehicle operation.

[0006] Another object of the present invention is to provide a vehicle including the above-described bogie.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A bogie, comprising:

[0009] Framework;

[0010] The toothed wheel is mounted on the frame via a toothed drive device, and the toothed wheel is one or more pairs for meshing with both sides of the toothed rail.

[0011] A wheelset is a set of multiple pairs mounted on the frame for engaging with the track, with the rims of the wheelsets positioned on opposite sides of the track.

[0012] Optionally, in the aforementioned bogie, a secondary suspension system for connection with the vehicle body damping is provided on the frame, the secondary suspension system comprising:

[0013] A leaf spring, mounted on the frame, is used to connect to the vehicle body via a vehicle body connecting seat;

[0014] There are two tension springs, one end of which is connected to a leaf spring, and the other end is connected to the frame via a connecting pin;

[0015] A lateral stop is provided on the side beam upright plate of the frame and is opposite to the vehicle body connecting seat;

[0016] A vertical stop is provided on the side beam upright of the frame and located below the tension spring.

[0017] Optionally, in the bogie described above, the frame is provided with a traction device for connection with the car body, the traction device comprising:

[0018] The tie rod has a connecting pin hole at one end for connecting to the frame traction seat of the frame via a pin shaft, and a mounting hole at the other end.

[0019] The traction pin has one end extending into the mounting hole, and the other end is limited to the mounting hole by a threaded connection with a nut. The other end is provided with an annular lug for connecting to the vehicle body traction seat.

[0020] A compression spring is sleeved on the traction pin and is used to be pressed between the mounting hole and the nut.

[0021] Optionally, in the bogie described above, the rack drive device includes:

[0022] The motor is mounted on the frame via a motor suspension mount.

[0023] The gearbox is mounted on the frame and is connected in a transmission manner between the motor and the gear train.

[0024] Optionally, in the bogie described above, a flange boss is provided at the end of the rack wheel facing the ground. The diameter of the flange boss is larger than the root circle diameter of the rack wheel and smaller than the tip circle diameter of the rack wheel. The flange boss is used for rack wheel abutment and limiting.

[0025] Optionally, in the above-described bogie, the braking device of the bogie is a band brake or a drum brake; and / or,

[0026] Both ends of the frame are equipped with obstacle removers via obstacle remover mounting seats, and the obstacle removers are provided with avoidance notches for avoiding the rack rails.

[0027] Optionally, in the aforementioned bogie, the frame is a U-shaped frame structure, and the side beams and crossbeams of the frame are made of I-beam or C-shaped cross-section steel; and / or,

[0028] The upright plate of the frame has weight-reducing holes.

[0029] A vehicle includes the aforementioned bogie and car body, the car body being mounted on the bogie.

[0030] Optionally, in the above-described vehicle, the vehicle body includes:

[0031] Vehicle body frame;

[0032] A floor is provided at the bottom of the vehicle frame, and the floor has a stepped structure. Seats are provided on each step of the floor, and the plane of each floor has an angle with the extension direction of the vehicle frame.

[0033] Optionally, in the aforementioned vehicle, a panoramic sunroof is provided at the top of the vehicle body frame, and panoramic side windows are provided on the sides; and / or,

[0034] The vehicle frame forms independent compartments through the various steps of the floor. The seats in each independent compartment face each other and form aisles between them. Each aisle corresponds to a pair of doors.

[0035] The bogie provided by this invention includes a frame, rack wheels, and wheelsets. The rack wheels are mounted on the frame via a rack drive device. One or more pairs of rack wheels are arranged horizontally and symmetrically, with each pair sandwiching a rack on both sides and meshing with the rack on both sides to guide the vehicle. The symmetrical arrangement of the rack wheels allows the radial forces acting on them to cancel each other out, thereby reducing the impact on the vehicle and track during operation and improving vehicle safety. Multiple wheelsets are mounted on the frame and are used to engage with the track to enable the vehicle to travel on the track. The wheel flanges are located on the outer side of the track, i.e., on the side furthest from each wheel. At the same track gauge, this outer flange design shifts the support point of the frame outward, increasing the support width of the frame and thus improving the vehicle's load-bearing capacity and operational stability.

[0036] Compared to existing technologies, the bogie provided by this invention improves the stability of the bogie when running on extremely steep gradients by adopting a horizontally symmetrical arrangement of toothed wheels and toothed rails, reducing the probability of vehicle overturning and derailment. Furthermore, by setting the wheel flanges of the wheelset outside the track, the span of the bogie is increased under the same track gauge, enhancing the stability of vehicle operation. At the same time, it can reduce the unit load of the vehicle and the track, which significantly reduces the manufacturing, operation and maintenance costs of the vehicle and the track. In addition, the external wheel flanges can also play a role in preventing derailment of the wheelset, preventing the vehicle from deviating laterally, thus ensuring high safety and adapting to the operation of rail transit vehicles on steep gradients.

[0037] The vehicle provided by the present invention includes the bogie and the car body described above. The car body is mounted on the bogie, so it also has the structure and beneficial effects described above, which will not be repeated here. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the vehicle structure disclosed in an embodiment of the present invention;

[0040] Figure 2 This is a front view of the bogie disclosed in an embodiment of the present invention;

[0041] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0042] Figure 4 This is a schematic diagram of the structure of the two-stage suspension device disclosed in an embodiment of the present invention;

[0043] Figure 5 This is a top view of the bogie disclosed in an embodiment of the present invention;

[0044] Figure 6 This is a front view of the traction device disclosed in an embodiment of the present invention;

[0045] Figure 7 This is a front view of the pull rod disclosed in an embodiment of the present invention;

[0046] Figure 8 This is a side view of the pull rod disclosed in an embodiment of the present invention;

[0047] Figure 9 This is a front view of the traction pin shaft disclosed in an embodiment of the present invention;

[0048] Figure 10 This is a side view of the traction pin disclosed in an embodiment of the present invention;

[0049] Figure 11 This is a schematic diagram of the wheelset structure disclosed in an embodiment of the present invention;

[0050] Figure 12 This is a schematic diagram of the gear drive device disclosed in an embodiment of the present invention;

[0051] Figure 13 This is a side view of the track.

[0052] Figure 14 This is a top view of the track;

[0053] Figure 15This is a schematic diagram of the fit between the toothed wheel and the toothed rack disclosed in an embodiment of the present invention;

[0054] Figure 16 This is a front view of the toothed wheel disclosed in an embodiment of the present invention;

[0055] Figure 17 This is a top view of the toothed wheel disclosed in an embodiment of the present invention;

[0056] Figure 18 This is a schematic diagram of the vehicle body structure disclosed in an embodiment of the present invention.

[0057] Among them, 100 is the vehicle body, 110 is the vehicle body frame, 120 is the floor, 130 is the seat, 140 is the sunroof, 150 is the side window, 160 is the aisle, and 170 is the door;

[0058] 200 is the bogie, 210 is the frame, 211 is the elliptical weight-reducing hole, 212 is the circular weight-reducing hole, 220 is the secondary suspension device, 221 is the tension spring, 222 is the leaf spring, 223 is the connecting pin, 224 is the mounting pin, 225 is the car body connecting seat, 226 is the lateral stop, 227 is the vertical stop, 230 is the traction device, 231 is the tie rod, 2311 is the mounting hole, 2312 is the connecting pin hole, 2313 is the mounting hole wall, 232 is the traction pin, 233 is the compression spring, 234... 240 is a nut, 250 is a primary suspension device, 251 is a wheelset, 252 is an axle, 253 is a bearing, 254 is a wheel flange, 260 is a gear drive device, 261 is a gear wheel, 2611 is a flange boss, 2612 is a gear tooth, 2613 is a tooth root, 2614 is an internal spline, 262 is a gearbox, 263 is a cylindrical gear, 264 is a motor, 265 is a universal coupling, 266 is a brake drum, 267 is a bevel gear, 270 is a braking device, and 280 is a derailleur.

[0059] 300 is a rack and pinion, 310 is a rack and pinion, and 320 is a guide rail;

[0060] 400 is the track. Detailed Implementation

[0061] The core of this invention is to disclose a bogie to improve the stability of rail transit vehicle operation.

[0062] Another object of the present invention is to provide a vehicle including the above-described bogie.

[0063] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the invention as described in the claims. It should be noted that, for ease of description, only the parts relevant to the relevant application are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0064] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0065] Combination Figure 2 The bogie 200 disclosed in this embodiment of the invention includes a frame 210, a rack wheel 261, and a wheelset 250. The rack wheel 261 is mounted on the frame 210 via a rack drive device 260, as shown below. Figure 15 As shown, the toothed wheel 261 is arranged in a horizontally symmetrical manner as one or more pairs. Each pair of toothed wheels 261 sandwiches the toothed rail 300 and is distributed on both sides of it, respectively meshing with both sides of the toothed rail 300 to guide the vehicle. The symmetrical arrangement of the toothed wheels 261 can make the radial forces on the toothed wheels 261 cancel each other out, thereby reducing the impact on the vehicle and track during vehicle operation and improving the safety of vehicle operation.

[0066] Wheelsets 250 are multiple pairs mounted on the frame 210, used to cooperate with the track 400 to enable the vehicle to travel on the track 400, such as... Figure 11 As shown, the wheel flange 254 of the wheelset 250 is located on the outside of the track, that is, the wheel flange 254 of the wheelset 250 is located on the side where the two wheels 251 are far apart. Under the same track gauge, the external placement of the wheel flange 254 causes the support point of the frame 210 to move outward, increasing the support width of the frame 210, thereby improving the vehicle's load-bearing capacity and operational stability.

[0067] Compared to existing technologies, the bogie 200 disclosed in this invention improves the stability of the bogie 200 when running on extremely steep gradients by using horizontally symmetrically arranged toothed rail wheels 261 meshing with toothed rails 300, reducing the probability of vehicle overturning and derailment. Furthermore, by setting the wheel flange 254 of the wheelset 250 outside the track 400, the span of the bogie 200 is increased under the same track gauge, enhancing the stability of vehicle operation. At the same time, it can reduce the unit load of the vehicle and the track, significantly reducing the manufacturing, operation and maintenance costs of the vehicle and the track. In addition, the external wheel flange 254 can also play a role in preventing derailment of the wheelset 250, preventing the vehicle from deviating laterally, thus ensuring high safety and adapting to the operation of rail transit vehicles on steep gradients.

[0068] It should be noted that each bogie 200 is generally equipped with two wheelsets 250. The wheelsets 250 only serve a supporting function, while the rack wheels 261 serve a guiding function. A single pair of rack wheels 261 is sufficient for the guiding function, while multiple pairs can improve the adhesion between the vehicle and the rack rails 300.

[0069] In this design, the wheel 251 and the axle 252 are connected by a bearing 253, and the two wheels 251 of each wheelset 250 rotate independently, thus decoupling their motion. This solves the problem of curve-passing capability for vehicles with no lateral displacement of the wheelset 250 (facilitating vehicle passage through curves). The specific implementation scheme of wheel decoupling is prior art and will not be described in detail here.

[0070] For ease of description, the vertical direction is defined as the vertical direction, the forward and backward direction of vehicle movement is defined as the longitudinal direction, and the left and right directions of vehicle movement are defined as the lateral direction.

[0071] To improve the vibration damping performance of the bogie 200 and the car body 100, a secondary suspension device 220 for vibration damping connection with the car body 100 is provided on the frame 210, combined with... Figure 2 and Figure 3 The secondary suspension device 220 includes leaf springs 222, tension springs 221, lateral stops 226, and vertical stops 227. Leaf springs 222 are mounted on the frame 210 and are connected to the vehicle body 100 via a body connecting seat 225. Two tension springs 221 are present; one end of each tension spring is connected to the end of the leaf spring 222, and the other end is connected to the frame 210 via a connecting pin 223. Vibrations of the frame 210 are damped by the tension springs 221 and leaf springs 222 before being transmitted to the vehicle body 100.

[0072] The lateral stop 226 is disposed on the side beam upright plate of the frame 210 and is positioned opposite to the vehicle body connecting seat 225 to achieve lateral limitation of the leaf spring 221. The vertical stop 227 is disposed on the side beam upright plate of the frame 210 and is located below the tension spring 221 to achieve vertical limitation of the leaf spring 222.

[0073] Specifically, such as Figure 4 As shown, the lower end of the tension spring 221 hooks onto the leaf spring 222, and the upper end hooks onto the connecting pin 223. A secondary suspension seat is provided on the frame 210. The frame mounting pin 224 mates with the seat hole of the secondary suspension seat and is locked with a nut. The connecting pin 223 passes through the lower pin hole of the mounting pin 224 to achieve connection with the frame 210.

[0074] A body connecting seat 225 is provided at the middle position of the leaf spring 222. The entire body 100 rests on the body connecting seats 225 on the four sets of leaf springs on both sides of the frame 200. Among them, the lateral stop 226 is a metal rubber part, which is installed on the side beam upright plate of the frame 210 and faces the body connecting seat 225, and performs the function of lateral limiting of the body 100. At the same time, a vertical stop 226 is provided below each tension spring 221. The vertical stop 226 is installed on the side beam at the lower part of the side beam of the frame 210 by bolts, and provides vertical limiting for the tension spring 221.

[0075] In addition to providing the stiffness required by the vehicle, the secondary suspension device 220, along with the leaf spring 222, provides friction damping, achieving vibration reduction and absorption. Compared to the existing vibration reduction scheme using air springs in rail vehicles, the aforementioned leaf spring 222 vibration reduction scheme can save space for component installation, reduce vehicle height, thereby lowering the vehicle's center of gravity and improving the vehicle's stability when running on steep slopes.

[0076] The specific structures of the aforementioned vertical stop 227 and lateral stop 226 are existing technologies and will not be described in detail here.

[0077] To ensure vehicle balance and reduce vibration, the primary suspension 240 of the bogie 200 can directly employ a structure such as a high-stiffness, low-deflection round spring, allowing for minimal vertical displacement of the vehicle and thus ensuring proper meshing between the rack wheel 261 and the rack 310. The wheelset axle box adopts a guide frame design with rigid longitudinal guide frame limiting movement. The wheelset axle box can move vertically and slide up and down within the frame guide frame, with upper and lower limit stops. The specific structure of the primary suspension 240 is existing technology and will not be described in detail here.

[0078] Since the bogie 200 disclosed in this embodiment of the invention is used to enable the rail vehicle to travel on a steep slope, a traction device 230 for connecting to the car body 100 is provided on the bogie 210 in order to achieve reliable traction between the bogie 210 and the car body 100.

[0079] Combination Figure 6 The traction device 230 includes a pull rod 231, a traction pin 232, and a compression spring 233, such as Figure 7 and Figure 8As shown, one end of the pull rod 231 has a connecting pin hole 2312 for connecting to the frame traction seat of the frame 210 via a pin shaft, and the other end has a mounting hole 2311. The mounting hole 2311 is opened along the extension direction of the pull rod 231. The first end of the traction pin shaft 232 is provided with a thread, which is used to be inserted into the mounting hole 2311 of the pull rod 231. The circumferential sidewall of the mounting hole 2311 is connected to the outside. The compression spring 233 is sleeved on the traction pin shaft 232. The nut 234 can be inserted into the mounting hole 2311 through the circumferential sidewall of the mounting hole 2311 and threadedly connected to the traction pin shaft 232 to limit the traction pin shaft 232, so as to prevent the traction pin shaft 232 from coming out of the mounting hole 2311. At the same time, the compression spring 233 is limited between the mounting hole wall 2313 and the nut 234. The second end of the traction pin shaft 232 is provided with an annular lug for connecting to the vehicle body.

[0080] Specifically, during installation, the compression spring 233 is fitted onto the traction pin 232, the traction pin 232 is passed through the mounting hole 2311 of the tie rod 231, then a washer is installed, and the nut 234 is tightened to pre-compress the compression spring 233, so that the traction pin 232 and the tie rod 231 are combined to form a traction rod. Then, the tie rod end is connected to the vehicle body traction seat through a pin, and the pin end of the traction rod is connected to the frame traction seat. The compression spring 233 of the traction rod is always kept under compression. This traction device 230 has a simple structure, good low-speed stability, and can achieve vehicle traction on extremely steep slopes.

[0081] A drive unit mounting base is provided on the frame 210 for mounting the gear drive unit 260.

[0082] To drive the rack wheels 261, the rack drive device 260 includes a motor 264 and a gearbox 262. The motor 264 is mounted on the frame 210 via a motor suspension mount, and the gearbox 262 is connected between the motor 264 and a pair of rack wheels 261.

[0083] In a specific embodiment disclosed in this invention, such as Figure 12 As shown, each rack and pinion drive unit 260 includes a gearbox 262, two universal couplings 265, and two motors 264 for driving a pair of rack and pinion wheels 261, with the two rack and pinion wheels 261 sharing one gearbox 262. The output shaft of the motor 264 is transmitted to the first-stage bevel gear 267 of the gearbox 262 via the universal couplings 265, changing the horizontal motion to vertical motion and reducing speed. The speed is then further reduced by the second-stage cylindrical gear 263 of the gearbox 262, ultimately transmitting the motion and torque to the two horizontally arranged rack and pinion wheels 261 to achieve vehicle traction.

[0084] Among them, the motor 264 and the gearbox 262 are designed to be flexible through the universal coupling 265.

[0085] To achieve reliable braking of the vehicle, the bogie 200 adopts a high-safety band brake device 270 or drum brake device 270 to adapt to the braking of the vehicle on extremely steep slopes.

[0086] Specifically, a brake drum 266 is installed at the end of the output shaft of the first gear pair in the gearbox 262. A brake band is arranged around the outside of the brake drum 266. The braking and release of the vehicle are achieved by locking and releasing the brake band and the brake drum 266, thereby achieving the braking of the vehicle.

[0087] Combination Figure 5 Two pairs of toothed wheels 261 are set on a frame 210. Correspondingly, the motors 264 of the two toothed drive devices 260 are arranged longitudinally on the frame 210 in a back-to-back manner, which is simple in structure.

[0088] To further prevent vehicle derailment, such as Figure 16 and Figure 17 As shown, a flange boss 2611 is provided at the end of the tooth ring of the toothed wheel 261 facing the ground. The diameter of the flange boss 2611 is larger than the root circle diameter of the toothed wheel 261 and smaller than the tip circle diameter of the toothed wheel 261.

[0089] Combination Figure 12 The flange boss 2611 can be used to cooperate with the guide rails 320 on both sides of the rack 300 to guide the vehicle. The flange boss 2611 is larger than the tooth root 2613 of the rack wheel 261, so that the teeth of the rack 310 of the rack 300 can limit the flange boss 2611, which plays a role in preventing overturning and derailment.

[0090] Furthermore, a gap is left between the flange boss 2611 and the gear tooth 2612 to facilitate tooth machining and to prevent the gear wheel 261 from undergoing vertical displacement during operation, which would cause the flange boss 2611 and the rack 310 to make abnormal contact.

[0091] Combination Figures 13-15 The external spline of the second-stage transmission gear shaft of the gear drive device 260 cooperates with the internal spline 2614 of the gear wheel 261 to realize the transmission of motion and torque.

[0092] To lower the vehicle's center of gravity, the frame 210 is a U-shaped frame structure. The side beams and crossbeams of the frame 210 are made of I-beam or C-shaped cross-section steel, and weight-reducing holes (elliptical weight-reducing holes 211 or circular weight-reducing holes 212) are opened on the upright plates of the side beams of the frame 210 to achieve a lightweight design of the bogie 200, thereby reducing axle load and energy consumption. At the same time, using a lightweight bogie 200 can reduce the unit load of the vehicle and track, resulting in a significant reduction in the manufacturing, operation, and maintenance costs of the vehicle and track.

[0093] Combination Figure 5 Two obstacle removers 280 are installed on the frame 210, respectively, and are mounted at both ends of the frame 210 via obstacle remover mounting seats. Since the height of the rack 300 is higher than that of the track 400, a clearance notch is provided on the obstacle remover 280 to allow it to simultaneously remove foreign objects or snow from the two side tracks 400 and the middle rack 310, ensuring the safe operation of the vehicle.

[0094] The vehicle disclosed in this embodiment of the invention includes the bogie 200 and the car body 100 described above. The car body 100 is mounted on the bogie 200, so it also has the structure and beneficial effects described above, which will not be repeated here.

[0095] It should be noted that, generally, one vehicle is equipped with one car body 100 and one bogie 200.

[0096] The vehicle body 100 includes a vehicle body frame 110 and a floor 120. The floor 120 is located at the bottom of the vehicle body frame 110 and is arranged in a stepped manner. Seats 130 are provided on each step of the floor 120. In order to accommodate the comfort of passengers when climbing steep slopes, the plane on which the floor 120 is located has an angle with the extension direction of the vehicle body frame 110. This angle is designed according to the average slope of the vehicle climbing slope so that the plane on which each step of the floor 120 is located remains horizontal during the climbing process of steep slopes, which facilitates passengers to stand and walk in the carriage and meets the requirements of safety and comfort when riding on steep slopes.

[0097] like Figure 1 As shown, the vehicle body 100 is generally tilted, so the vehicle cannot be operated from one end. The vehicle body frame 110 has a parallelogram shape, and each floor 120 has an angle with the extension direction of the vehicle body frame 110, so that the equipment layout inside the vehicle body 100 has a better human-machine interface.

[0098] The vehicle body frame 110 is made of lightweight materials to reduce its own weight, achieve lightweight design, lower the vehicle's center of gravity, reduce axle load, reduce energy consumption, and reduce the unit load of the vehicle and the line.

[0099] To facilitate passengers' enjoyment of the scenery, a sunroof 140 is provided at the top of the vehicle frame 110, and a side window 150 is provided on the side. The sunroof 140 and the side window 150 are panoramic glass to reduce the weight of the vehicle body 100 and facilitate passengers' viewing. Furthermore, a glass window is also provided above the door 170, making the carriage transparent and providing a wide view.

[0100] like Figure 18As shown, the vehicle frame 110 forms independent compartments through the various steps of the floor 120. The seats 130 in each independent compartment are arranged facing each other, and the seating part of the seats 130 is tilted away from the backrest to prevent passengers from slipping off when sitting on a steep slope.

[0101] Aisles 160 are formed between the seats 130 on each level of floor 120, and each aisle 160 corresponds to a pair of doors 170. The aisles 160 of the vehicle disclosed in this embodiment of the invention are arranged laterally instead of longitudinally in conventional rail vehicles, and the stepped structure of the floor 120 makes each compartment self-contained, which can restrict the movement area of ​​passengers and reduce the safety hazards caused by people falling during vehicle operation.

[0102] The doors 170 are designed with double doors, with a pair of doors 170 corresponding to each aisle 160, making it easy for passengers to get on and off the vehicle.

[0103] The vehicle body 100 disclosed in this invention adopts an irregular shape, lightweight materials, panoramic sunroof, transverse walkway and stepped floor design, with excellent and novel structure, safe, reliable and economical operation, and has great social and economic benefits.

[0104] The terms "first" and "second," etc., used in the specification and claims of this invention are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of embodiments in this application, "a plurality of" refers to two or more.

[0105] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bogie, characterized in that, The utility model relates to a rack wheel drive type monorail vehicle, including: Frame (210); Rack wheel (261) is set up on the frame (210) through rack drive device (260), the rack wheel (261) is one or more pairs for engaging with the both sides of rack strip (300) respectively, is horizontally symmetric arrangement;The end of rack wheel (261) facing ground is provided with flange boss (2611), the diameter of flange boss (2611) is greater than the dedendum circle diameter of rack wheel (261), and less than the addendum circle diameter of rack wheel (261), and flange boss (2611) is used for rack strip (300) abutment limit; Wheel pair (250) is set up on the frame (210) for cooperating with track (400), and the flange (254) of wheel pair (250) is set up on the side of track (400) away from each other; Rack drive device (260) includes a gear box (262), two universal shaft coupling (265) and two motors (264), is used for driving a pair of rack wheel (261), two rack wheel (261) share a gear box (262);The output shaft of one motor (264) is passed through universal shaft coupling (265) and is passed through the first stage bevel gear (267) of gear box (262), changes horizontal motion into vertical motion and reduces speed, then further reduces speed through the second stage cylindrical gear (263) of gear box (262), finally motion and torque are transmitted to corresponding rack wheel (261).

2. The bogie of claim 1, wherein The frame (210) is provided with two suspension devices (220) for damping connection with the vehicle body (100), and the two suspension devices (220) include: Plate spring (222) is arranged on the frame (210) and connected with the vehicle body (100) through a vehicle body connecting seat (225); Tension spring (221) is two, one end of the tension spring (221) is connected with the plate spring (222), and the other end is connected with the frame (210) through a connecting pin (223); Transverse stop (226) is arranged on the side beam vertical plate of the frame (210) and opposite to the vehicle body connecting seat (225); Vertical stop (227) is arranged on the side beam vertical plate of the frame (210) and below the tension spring (221).

3. The bogie of claim 1, wherein The frame (210) is provided with a traction device (230) for connecting with the vehicle body (100), and the traction device (230) includes: Tie rod (231) is provided with a connecting pin hole (2312) at one end for connecting with the frame traction seat of the frame (210) through a pin shaft, and is provided with a mounting hole (2311) at the other end; Traction pin shaft (232) is inserted into the mounting hole (2311) at one end, and the end is limited in the mounting hole (2311) by screwing with a nut (234), and the other end is provided with a ring lug for connecting with the vehicle body traction seat of the vehicle body (100); A compression spring (233) is sleeved on the traction pin (232) and is used to be pressed between the mounting hole (2311) and the nut (234).

4. The bogie of claim 1, wherein The gear drive device (260) includes: The motor (264) is mounted on the frame (210) via a motor suspension mount; The gearbox (262) is mounted on the frame (210) and is connected in a transmission manner between the motor (264) and the gear (261).

5. The bogie of claim 1, wherein The braking device (270) of the bogie (200) is a band brake or a drum brake; and / or, The frame (210) has obstacle removers (280) installed at both ends via obstacle remover mounting seats. The obstacle removers (280) have clearance notches for avoiding the toothed rail (300).

6. The bogie of claim 1, wherein The frame (210) is a "U"-shaped frame structure, and the side beams and cross beams of the frame (210) are made of I-shaped or C-shaped steel sections; and / or, The upright plate of the frame (210) has weight-reducing holes.

7. A vehicle characterized by comprising: Includes a bogie (200) and a car body (100) as described in any one of claims 1 to 6, wherein the car body (100) is disposed on the bogie (200).

8. The vehicle of claim 7, wherein, The vehicle body (100) includes: Vehicle frame (110); Floor (120) is provided at the bottom of the vehicle frame (110), and the floor (120) has a stepped structure. Seats (130) are provided on each step of the floor (120). The plane of each floor (120) has an angle with the extension direction of the vehicle frame (110).

9. The vehicle of claim 8, wherein, The top of the vehicle frame (110) is provided with a panoramic sunroof (140), and the sides are provided with panoramic side windows (150); and / or, The vehicle frame (110) forms independent compartments through the various steps of the floor (120). The seats (130) in each independent compartment face each other and form a passageway (160) between them. Each passageway (160) corresponds to a pair of doors (170).

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