Six-axle four-wheel drive bogie assembly, rail vehicle, rail system and use method

Abstract

The present invention relates to a six-axle four-wheel drive bogie assembly, a rail vehicle, a rail system and a method of use, comprising a bogie body, two wheel pairs, four driving gears, two wheel pair driving devices and two gear driving devices; the two wheel pair driving devices are respectively connected to one of the wheel pairs, and each two driving gears are respectively connected to one of the gear driving devices; the axis of the driving gear is perpendicular to the axis of the wheel pair. The present invention adopts a six-axle four-wheel drive, and if one of the axes is damaged, it can automatically become a driven one, with a high safety factor; the present invention can adjust the power ratio of wheel-rail drive and rack-rail drive according to road conditions, can achieve the optimization of system power configuration, and is conducive to saving energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of bogies, and in particular to a six-axle four-wheel drive bogie assembly, a rail vehicle, a rail system and a use method thereof. Background Art

[0002] The bogie is a device used to support the vehicle body and enable it to run on the track, also known as the running part. It is a key component of rail vehicles. Its main functions are as follows:

[0003] 1. Load-bearing: Bear the weight of the upper part of the locomotive, including the weight of the car body and various mechanical and electrical equipment installed in the car body, and transfer this weight to the rails through a series of spring suspension devices;

[0004] 2. Force transmission: Generate traction and braking force, and transmit the generated traction and braking force to the vehicle frame through the traction device, and finally to the coupler to achieve traction and braking of the train;

[0005] 3. Buffer (running) - to ease the impact of the track on the locomotive during locomotive operation and ensure the stability of locomotive operation;

[0006] 4. Guidance - Under the action of the rails, guide the locomotive through curves and switches smoothly to ensure the safe operation of the locomotive on the curve.

[0007] Patent document CN110435697A discloses a differential wheel-controlled radial bogie, which eliminates the wheel pair structure and adopts an independent rotation system to control the rotation of each wheel separately. However, the differential wheel-controlled radial bogie has high requirements on the control system. If one of the motors is damaged, the control system cannot make a quick judgment, and the wheel is easy to derail, which poses certain safety hazards. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a six-axle four-wheel drive bogie assembly, a rail vehicle, a rail system and a use method.

[0009] The present invention is achieved through the following technical solutions:

[0010] A six-axle four-wheel drive bogie assembly includes a bogie body, two wheel sets, four drive gears, two wheel set drive devices and two gear drive devices;

[0011] The two wheel set driving devices are respectively connected to one of the wheel sets, and each two driving gears are respectively connected to one of the gear driving devices; the axis of the driving gear is perpendicular to the axis of the wheel set.

[0012] Wherein, the wheelset driving device is connected to the wheelset via a wheelset driving mechanism.

[0013] Furthermore, the wheelset is connected with a brake disc, the bogie body is equipped with a brake device, and the brake device and the brake disc are installed in a non-contact manner.

[0014] Wherein, the rack driving device is connected to the driving gear through a rack driving mechanism.

[0015] Furthermore, the rack driving mechanism includes a vertical gear transmission mechanism.

[0016] Wherein, the rack drive mechanism is connected with a brake.

[0017] Wherein, the wheelset is connected to the bogie body through a primary suspension.

[0018] The rail vehicle comprises a car body and the six-axle four-wheel drive bogie assembly, wherein the car body is connected to the bogie body through a secondary suspension and a traction device.

[0019] The track system includes two tracks, a rack rail and a track vehicle, wherein the wheelset runs on the two tracks and the rack rail is arranged between the two tracks;

[0020] The rack rail comprises two racks arranged on the left and right, and two driving gears connected to the same gear driving device are used to mesh with one of the racks respectively.

[0021] The method for using the track system is to connect the wheel set drive device and the gear drive device to the control system; the speed of the motor of each drive device is adjusted according to the slope, and the coupling and synchronization of the gear drive and the wheel drive are achieved through electrical control.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention adopts six-axle four-wheel drive. If one of the axles is damaged, it can automatically become a driven one, which has a high safety factor;

[0024] 2. The present invention can adjust the power ratio of the wheel-rail drive according to the climbing road conditions, optimize the system power configuration, and save energy;

[0025] 3. The present invention can realize the free switching between rack rail and non-rack rail running lines, solving the problem of low operating efficiency of mountain rail transit;

[0026] 4. The present invention realizes the independent coexistence of the dual power modes of rack-rail drive and wheel-rail drive in one device, which reduces the weight of the chassis, has a compact structure and is safe and reliable;

[0027] 5. The rack-and-rail drive and wheel-and-rail drive of the present invention are both provided with independent and reliable braking devices to ensure the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention.

[0029] Figure 1 It is a top view of the six-axle four-wheel drive bogie assembly;

[0030] Figure 2 It is a bottom view of the six-axle four-wheel drive bogie assembly;

[0031] Figure 3 is a top view of the gear rack drive mechanism;

[0032] Figure 4 is a side view of the rack drive mechanism;

[0033] Figure 5 It is a schematic diagram of the structure of a rail vehicle;

[0034] Figure 6 It is a schematic diagram of the structure of the track system;

[0035] Figure 7 It is the gear rack power distribution curve;

[0036] In the figure: 1-first wheel pair driving mechanism, 2-first brake, 3-first rack driving mechanism, 4-first rack driving device, 5-wheel pair, 6-first wheel pair driving device, 7-bogie body, 8-traction device, 9-brake device, 10-brake disc, 11-second wheel pair driving mechanism, 12-second brake, 13-second rack driving mechanism, 14-second rack driving device, 15-second wheel pair driving device, 16-primary suspension, 17-secondary suspension, 18-track, 19-driving gear B, 20-line rack, 21 -Anti-drop cover, 22-drive gear A, 23-drive gear D, 24-drive gear C, 25-car body, 26-foundation, 27-first vertical axis, 28-bidirectional gear shaft, 29-second vertical axis, 30-wheel set main axis, 31-first large bevel gear, 32-rack transmission gear, 33-second large bevel gear, 34-rack motor, 35-large reduction mechanism, 36-rack drive gear, 37-rack horizontal axis, 38-gear box, 39-wheel set main gear, 40-wheel set auxiliary gear, 41-wheel set auxiliary shaft, 42-small reduction mechanism, 43-wheel set motor. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, or directions or positional relationships in which the invention product is usually placed when in use, or directions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figure 1 , Figure 2 As shown, the six-axle four-wheel drive bogie assembly disclosed in the present invention includes a bogie body 7 and two traveling mechanisms.

[0044] The first traveling mechanism comprises: a first wheel pair driving device 6, a first wheel pair driving mechanism 1, a wheel pair 5, a first rack driving device 4, a first rack driving mechanism 3, a driving gear A22 and a driving gear B19;

[0045] The driving gear A22 and the driving gear B19 are located between the two wheels of the wheelset 5 , and the axes of the driving gear A22 and the driving gear B19 are perpendicular to the axis of the wheelset 5 .

[0046] The second traveling mechanism comprises: a second wheelset driving device 15, a second wheelset driving mechanism 11, a wheelset 5, a second rack driving device 14, a second rack driving mechanism 13, a driving gear C24 and a driving gear D23.

[0047] The driving gear C24 and the driving gear D23 are located between two wheels of the wheelset 5 , and the axes of the driving gear C24 and the driving gear D23 are perpendicular to the axis of the wheelset 5 .

[0048] In this embodiment, the two walking mechanisms are arranged in a mirror image with front and rear rotation. The first wheel pair driving device 6, the second wheel pair driving device 15, the first rack driving device 4 and the second rack driving device 14 all include motors.

[0049] The first wheel pair drive device 6 is connected to the first wheel pair drive mechanism 1, which is then connected to the wheel pair 5 to form a first wheel-rail drive system. The second wheel pair drive device 15 is connected to the second wheel pair drive mechanism 11, which is then connected to the wheel pair 5 to form a second wheel-rail drive system.

[0050] The wheelset 5 is equipped with a brake device 9, which is fixedly connected to the bogie body 7, and the brake disc 10 is fixedly connected to the wheelset 5. At the same time, the brake device 9 and the brake disc 10 are installed in a non-contact manner. During the travel process, the service braking function is realized through the tight contact between the brake device 9 and the brake disc 10.

[0051] The first rack drive device 4 is connected to the first rack drive mechanism 3, which is further connected to the drive gear A22 and the drive gear B19 to form a first rack drive system. The second rack drive device 14 is connected to the second rack drive mechanism 13, which is further connected to the drive gear C24 and the drive gear D23 to form a second rack drive system.

[0052] The first brake 2 is connected to the first rack drive mechanism 3 to realize the braking function of the first rack drive system during the travel process. The second brake 12 is connected to the second rack drive mechanism 13 to realize the braking function of the second rack drive system during the travel process.

[0053] The specific structure of the first walking mechanism is as follows:

[0054] a, wheelset drive

[0055] The structure of the first wheelset driving mechanism 1 is as follows: the wheelset main gear 39 is fixedly connected to the wheelset main shaft 30 of the wheelset 5, and the wheelset main shaft 30 is loosely connected to the gear box 38 and the bogie body 7;

[0056] The wheelset auxiliary teeth 40 are fixedly connected to the wheelset auxiliary shaft 41, the wheelset auxiliary shaft 41 is loosely connected to the gear box body 38, the wheelset motor 43 is key-connected to the small reduction mechanism 42, and the housing is fixedly connected together, the output shaft of the small reduction mechanism 42 is key-connected to the wheelset auxiliary shaft 41, the housing is fixedly connected to the gear box body 38, and at the same time, the wheelset auxiliary teeth 40 are meshed with the wheelset main teeth 39 to form a gear transmission relationship.

[0057] Wheel set transmission principle: the wheelset motor 43 drives the small reduction mechanism 42 to rotate, the small reduction mechanism 42 drives the wheelset secondary shaft 41 to rotate, thereby driving the wheelset secondary teeth 40 to rotate, the wheelset secondary teeth 40 in turn drive the wheelset main teeth 30 to rotate, the wheelset main teeth 39 drive the wheel-rail main shaft 30 to rotate, thereby finally realizing the rotation of the wheel 5.

[0058] , rack drive

[0059] In this embodiment, the first rack driving mechanism 3 and the second rack driving mechanism 13 both include vertical gear transmission mechanisms to achieve reversal of rotation transmission.

[0060] The structure of the first rack drive mechanism 3 is as follows: the second large bevel gear 33 and the driving gear B19 are both fixedly connected to the first vertical shaft 27 , and the first vertical shaft 27 is loosely connected to the gear box body 38 .

[0061] The first large bevel gear 31 and the driving gear A22 are both fixedly connected to the second vertical shaft 29 , which is loosely connected to the gear box 38 ; the rack transmission gear 32 is fixedly connected to the bidirectional gear shaft 28 , which is loosely connected to the gear box 38 .

[0062] The bevel teeth at both ends of the bidirectional gear shaft 28 are respectively meshed with the first large bevel teeth 31 and the second large bevel teeth 10 to form a gear transmission relationship.

[0063] The rack driving teeth 36 are fixedly connected to the rack transverse axis 37, and the rack transverse axis 37 is loosely connected to the gear box body 38. The rack driving teeth 36 mesh with the rack transmission teeth 32 to form a gear transmission relationship; the rack motor 34 is key-connected to the large reduction mechanism 35, and the housing is fixedly connected together, the output shaft of the large reduction mechanism 35 is key-connected to the rack transverse axis 37, and the housing is fixedly connected to the gear box body 38, thereby forming a transmission relationship.

[0064] The first brake 2 is key-connected to the rack rail transverse axis 37 and fixedly connected to the gear box body 38, thereby realizing the braking function during the travel process.

[0065] Rack transmission principle: the rack motor 34 drives the large reduction mechanism 35 to rotate, the large reduction mechanism 35 drives the rack driving gear 36 to rotate, the rack driving gear 36 drives the rack transmission gear 32 to rotate, the rack transmission gear 32 rotates the bidirectional gear shaft 28 and the bidirectional gear shaft 28 respectively drives the driving gear A22 and the driving gear B19 to rotate, because the driving gear A22 and the driving gear B19 are meshed with the line rack 20, the locomotive realizes the straight-line travel function on the line.

[0066] The structure of the second walking mechanism is the same as that of the first walking mechanism, and will not be described in detail here.

[0067] like Figure 5 As shown, the rail vehicle disclosed in the present invention includes a vehicle body 25 and the above-mentioned six-axle four-wheel drive bogie assembly. Figure 3 As shown, the wheelset 5 is connected to the bogie body 7 via the primary suspension 16 ; the car body 25 is connected to the bogie body 7 via the secondary suspension 17 and the traction device 8 .

[0068] like Figure 6 As shown, the track system disclosed in the present invention includes a track vehicle, two tracks 18 and a track rack 20. The track 18 is laid along the track, and the track rack 20 is arranged between the two tracks 18 according to specific circumstances.

[0069] The line rack 20 and the anti-drop cover 21 are fixedly connected to the base 26. The rack includes two racks arranged on the left and right, and the driving gear A22 and the driving gear B19 are respectively used to mesh with one of the racks; the driving gear C24 and the driving gear D23 are respectively used to mesh with one of the racks.

[0070] When the driving gear A22, the driving gear B19, the driving gear C24 and the driving gear D23 are all in gear meshing with the line rack 20, a rack driving mode can be formed.

[0071] Of course, the first wheel pair drive device 6, the second wheel pair drive device 15, the first rack drive device 4 and the second rack drive device 14 are all connected to the control system, and the speed of the motor of each drive device can be adjusted by the control system. The synchronization of the drive gear and the wheel pair can be achieved through electrical control. In addition, the power ratio of the wheel pair and the drive gear can be adjusted and distributed through electrical control, and the ratio can be adjusted according to the slope size. Figure 7 As shown, when the slope is 120‰, the gear rack-rail power distribution ratio is set to 7:3; when the slope is 250‰, the gear rack-rail power distribution ratio is set to 5:5; when the slope is 500‰, the gear rack-rail power distribution ratio is set to 3:7.

[0072] The working principle of the present invention is as follows:

[0073] 1. How to realize the power assist function when the rack rail is climbing:

[0074] When the first and second rack drive systems drive the drive gear A22, the drive gear B19, the drive gear C24 and the drive gear D23 to engage with the line rack 20 to achieve the climbing function, the first and second wheel-rail drive systems also start the working mode to drive the wheelset 5 to rotate, and realize the boost function when climbing through effective electrical control, thereby reducing the system power configuration of the first and second rack drive systems and achieving the purpose of saving energy consumption.

[0075] 2. The dual power transmissions are interconnected and interdependent.

[0076] a. The first and second rack drive systems drive the drive gear A22, the drive gear B19, the drive gear C24 and the drive gear D23 to engage with the line rack 20 in the following manner:

[0077] The first and second wheel-rail drive systems start the working mode, driving the wheelset 5 to rotate, while the first and second rack-rail drive systems are in a non-working state; the wheelset 5 moves, causing the drive gear A22, the drive gear B19, the drive gear C24 and the drive gear D23 to form gear meshing with the line rack 20.

[0078] After the meshing with the line rack is completed, the first and second rack drive systems start to work, and at the same time, the control modes of the first and second wheel-rail drive systems are switched to enter the power-assisted working state.

[0079] b. When working on a flat road, the first and second wheel-rail drive systems are working, while the first and second rack-rail drive systems are always in a non-working state, thereby achieving the purpose of energy saving and consumption reduction.

[0080] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Six-axle four-wheel drive bogie assembly, characterized by: It includes a bogie body, two wheel sets, four driving gears, two wheel set driving devices and two rack-rail driving devices; The two wheel set driving devices are respectively connected to one of the wheel sets, and each two driving gears are respectively connected to one of the rack driving devices; the axis of the driving gear is perpendicular to the axis of the wheel set; The wheelset drive device is connected to the wheelset through a wheelset drive mechanism, the wheelset drive device includes a wheelset motor and a small reduction mechanism, and the wheelset motor is connected to the small reduction mechanism; the wheelset drive mechanism includes a wheelset main tooth, a wheelset auxiliary tooth, a wheelset secondary shaft and a gear box, the wheelset main shaft is connected to the gear box and the bogie body with an empty sleeve, the wheelset main tooth is fixedly connected to the wheelset main shaft of the wheelset, the wheelset auxiliary tooth is fixedly connected to the wheelset secondary shaft, the wheelset secondary shaft is connected to the empty sleeve of the gear box, the output shaft of the small reduction mechanism is connected to the wheelset secondary shaft, and the wheelset auxiliary tooth is meshed with the wheelset main tooth to form a gear transmission relationship; the rack drive device is connected to the driving gear through the rack drive mechanism, and the rack drive device includes a rack motor, a large reduction mechanism, a rack transverse shaft, a rack drive tooth and a rack transmission tooth, the rack motor is connected to the large reduction mechanism, the output shaft of the large reduction mechanism is connected to the rack transverse shaft, the rack drive tooth is fixedly connected to the rack transverse shaft, and the rack transverse shaft is connected to the empty sleeve of the gear box; The rack driving mechanism includes a vertical gear transmission mechanism, which includes a first large bevel tooth, a second large bevel tooth and a bidirectional gear shaft, the second large bevel tooth and one of the driving gears are fixedly connected to the first vertical shaft, and the first vertical shaft is connected to the empty sleeve of the gear box; the first large bevel tooth and another driving gear are fixedly connected to the second vertical shaft, and the second vertical shaft is connected to the empty sleeve of the gear box; the bidirectional gear shaft is connected to the empty sleeve of the gear box, and the bevel teeth at both ends of the bidirectional gear shaft are respectively meshed with the first large bevel tooth and the second large bevel tooth to form a gear transmission relationship; the rack transmission teeth are fixedly connected to the bidirectional gear shaft, and the rack driving teeth are meshed with the rack transmission teeth to form a gear transmission relationship.

2. The six-axle four-wheel drive bogie assembly according to claim 1 is characterized in that: The wheelset is connected with a brake disc, and the bogie body is equipped with a brake device, which is installed in a non-contact matching manner with the brake disc.

3. The six-axle four-wheel drive bogie assembly according to claim 1 is characterized in that: The rack drive device is connected with a brake.

4. The six-axle four-wheel drive bogie assembly according to claim 1, 2 or 3, characterized in that: The wheelset is connected to the bogie body through a primary suspension.

5. A rail vehicle, characterized in that: The invention comprises a car body and a six-axle four-wheel drive bogie assembly as claimed in any one of claims 1 to 4, wherein the car body is connected to the bogie body through a secondary suspension and a traction device.

6. A track system, comprising two tracks, characterized in that: Also includes a rack rail and a rail vehicle as claimed in claim 5, wherein the wheelset travels on two rails, and the rack rail is arranged between the two rails; The rack includes two racks arranged on the left and right, and two driving gears connected to the same rack driving device are used to mesh with one of the racks respectively.

7. The method for using the track system according to claim 6, characterized in that: The wheelset drive device and the rack drive device are connected to the control system; the speed of the motor of each drive device is adjusted according to the slope.

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