Driving and braking integrated gearbox, bogie, driving system and railway vehicle

Abstract

The invention relates to the technical field of vehicle driving mechanisms, in particular to a driving and braking integrated gearbox, a bogie, a driving system and a railway vehicle. The gearbox comprises a gearbox shell, a gear set, an inertia mechanism and a braking device, the input end of the gear set is connected with an input shaft, and the output end of the gear set is connected with a mandrel; according to the gearbox, the inertia mechanism and the braking device are added to the gearbox, the inertia mechanism is connected with the gear set and can rotate along with the gear set, the braking device is connected with the inertia mechanism and used for applying braking force to the inertia mechanism so as to brake the gear set and the mandrel, and therefore the braking function of the gearbox is achieved; driving and braking integration of the gear box is achieved, a brake does not need to be installed at other positions of a vehicle system, the cost of independently installing a braking system is reduced, meanwhile, a vehicle driving system is more integrated, the situation that the independent brake occupies the space of a bogie is avoided, and light-weight design of a vehicle is achieved easily.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle drive mechanisms, and in particular to a drive-brake integrated gearbox, a bogie, a drive system and a rail vehicle. Background Art

[0002] The main function of the drive system for rail transit bogies is to transmit traction power, wherein the gearbox serves as a transmission device for torque transmission and is mainly a component of the drive system.

[0003] In the prior art, driving and braking are two separate systems, and separate brakes need to be provided on the axles or wheels. This increases the cost of providing the brakes, and separate brakes occupy part of the space of the bogie, increasing the weight of the vehicle body, which is not conducive to the lightweight design of the vehicle. Summary of the invention

[0004] The present invention provides a drive-brake integrated gearbox, a bogie, a drive system and a rail vehicle, which are used to solve the defects of high cost and space occupation of separately arranging brakes on vehicle bogies in the prior art, and realize the drive and brake integration of the vehicle drive system.

[0005] The present invention provides a driving and braking integrated gearbox, comprising:

[0006] Gearbox housing;

[0007] A gear set is arranged in the gear box housing, the input end of the gear set is connected to the input shaft, and the output end of the gear set is connected to the core shaft;

[0008] An inertia mechanism, connected to the gear set and adapted to rotate with the gear set;

[0009] A braking device is connected to the inertia mechanism, and the braking device is suitable for applying a braking force to the inertia mechanism to brake the gear set and the spindle.

[0010] According to one embodiment of the present invention, the idle mechanism is an idle gear shaft, and the idle gear shaft includes an idle gear and an idle shaft connected to each other. The idle gear is connected to the gear set and is suitable for transmitting torque between the gear set and the idle mechanism. The braking device is arranged at one end of the idle shaft.

[0011] According to one embodiment of the present invention, the idle mechanism is an idle gear shaft, the idle gear shaft includes an idle gear and an idle shaft connected to each other, the connecting end is the gear teeth of the idle gear, the gear teeth are meshed with the gear set, and the braking end is arranged at one end of the idle shaft.

[0012] According to one embodiment of the present invention, the braking device is a disc brake;

[0013] The disc brake includes a brake housing, a fixed disc, a movable disc and a control valve. The movable disc is connected to the idle shaft and is suitable for rotating with the idle shaft. The fixed disc is connected to the brake housing. The control valve is suitable for pushing the fixed disc to achieve braking by friction with the movable disc.

[0014] According to an embodiment of the present invention, a shaft disc seat is provided at one end of the idle shaft, the moving disc is provided on a peripheral wall of the shaft disc seat, and the shaft disc seat is detachably connected to the idle shaft via a connecting piece.

[0015] According to an embodiment of the present invention, a mounting seat is provided on one side of the gearbox housing, the mounting seat is provided with a bearing, the idle shaft is mounted on the bearing, and the brake housing is connected to the mounting seat.

[0016] According to an embodiment of the present invention, the gear set comprises a driving gear and a driven gear, the driving gear is connected to the input shaft, the driven gear is connected to the core shaft, and the idler gear is meshingly connected to the driven gear.

[0017] According to an embodiment of the present invention, the inertia mechanism is arranged on a side of the core shaft relatively far away from the motor.

[0018] The present invention also provides a bogie, comprising:

[0019] Framework;

[0020] A shaft sleeve is arranged on the frame, and a core shaft is arranged in the shaft sleeve;

[0021] Wheel sets, arranged at both ends of the mandrel;

[0022] The driving and braking integrated gearbox as described above, wherein the gearbox is connected to the shaft sleeve and the frame.

[0023] The present invention also provides a driving system, comprising:

[0024] Motor;

[0025] A bogie as described above;

[0026] The motor is mounted on the bogie, the output end of the motor is connected to the gear box via an input shaft, and the output end of the gear box is connected to the wheelset via the core shaft.

[0027] The present invention also provides a rail vehicle, comprising:

[0028] Vehicle body;

[0029] The drive system as described above is installed on the vehicle body.

[0030] The drive-braking integrated gearbox provided by the present invention adds an inert mechanism and a braking device to the gearbox; the inert mechanism is connected to the gear set and can rotate with the gear set; the braking device is connected to the inert mechanism; the braking device is used to apply a braking force to the inert mechanism to brake the gear set and the core shaft, thereby realizing the braking function of the gearbox. The present invention realizes the integration of drive and braking of the gearbox, eliminates the need to install brakes at other locations in the vehicle system, reduces the cost of installing a separate braking system, and makes the vehicle drive system more integrated, avoiding the separate brake occupying the bogie space, which is conducive to realizing the lightweight design of the vehicle.

[0031] The bogie provided by the present invention, since it is provided with the above-mentioned drive-brake integrated gearbox, also has all the advantages as described above.

[0032] The driving system provided by the present invention, because it has the above-mentioned bogie, also has all the advantages mentioned above.

[0033] Likewise, the rail vehicle provided by the present invention has the above-mentioned drive system and also has all the advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of the drive-brake integrated gearbox provided by the present invention;

[0036] Figure 2 It is a structural schematic diagram of the inert mechanism provided by the present invention;

[0037] Figure 3 It is a structural schematic diagram of the braking device provided by the present invention;

[0038] Figure 4 It is a structural schematic diagram of the brake shaft disc provided by the present invention.

[0039] Reference numerals:

[0040] 110, gear box housing; 120, input shaft; 130, gear set; 131, driving wheel; 132, driven wheel;

[0041] 200, mandrel;

[0042] 300, inert mechanism; 310, inert gear; 320, idle shaft; 330, mounting seat; 340, bearing;

[0043] 400, brake device; 410, brake housing; 420, fixed plate; 430, moving plate; 431, shaft plate seat; 440, control valve;

[0044] 500, bushing;

[0045] 600. Motor; 610. Coupling. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0047] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0049] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Combine the following Figure 1-Figure 4 Embodiments of the present invention are described.

[0052] like Figure 1 As shown, an embodiment of the present invention provides a drive-brake integrated gearbox, the gearbox having a gearbox housing 110, a gear set 130 being arranged inside the gearbox housing 110, an input end of the gear set 130 being connected to an input shaft 120, the input shaft 120 extending out of the gearbox housing 110 to connect to a motor 600, an output end of the gear set 130 being connected to a core shaft 200, the core shaft 200 being also an axle, and both ends of the axle being connected to wheel pairs.

[0053] The improvement of this embodiment is that an inertia mechanism 300 is provided on the gear box. The inertia mechanism 300 is connected to the gear set 130 and can rotate with the gear set 130 . The torque of the gear set 130 is then transmitted to the inertia mechanism 300 .

[0054] In this embodiment, a braking device 400 is provided on one side of the inertia mechanism 300 . The braking device 400 is connected to the inertia mechanism 300 . The braking device 400 can brake the inertia mechanism 300 . The braking force is transmitted to the gear set 130 and the spindle 200 through the inertia mechanism 300 , thereby achieving braking of the gear set 130 and the spindle 200 .

[0055] In this embodiment, the inert mechanism 300 is a transmission device. The inert mechanism 300 has a connecting end and a braking end. The connecting end is connected to the gear set 130 and is used to transmit the torque between the gear set 130 and the inert mechanism 300. The braking end is installed with a braking device 400. When the braking device 400 works, the braking force is applied to the braking end of the inert mechanism 300. The inert mechanism 300 is braked and transmitted to the gear set 130. The gear set 130 transmits the braking force to the core shaft 200, thereby achieving braking of the core shaft 200.

[0056] The drive-brake integrated gearbox provided by the present invention adds an inert mechanism 300 and a braking device 400 to the gearbox; the inert mechanism 300 is connected to the gear set 130 and can rotate with the gear set 130; the braking device 400 is connected to the inert mechanism 300; the braking device 400 is used to apply a braking force to the inert mechanism 300 to brake the gear set 130 and the core shaft 200, thereby realizing the braking function of the gearbox and integrating the drive and braking of the gearbox. There is no need to install brakes at other locations of the vehicle system, which reduces the cost of installing a separate braking system. At the same time, the vehicle drive system is more integrated, avoiding the separate brake occupying the bogie space, which is conducive to realizing the lightweight design of the vehicle.

[0057] like Figure 2 As shown, in one embodiment, the inert mechanism 300 is an inert gear shaft, and the inert gear shaft has an inert gear 310 and an inert shaft 320 connected to each other, and the connecting end is the gear teeth of the inert gear 310, and the gear teeth are meshed with the gear set 130 to achieve the transmission of the rotational force or braking force between the gear set 130 and the inert mechanism 300. The braking end is provided at one end of the inert shaft 320, and the braking device 400 brakes the inert mechanism 300 from one end of the inert shaft 320.

[0058] Of course, the braking end of the inertial mechanism 300 may not be arranged at the end, but may be a certain position on the shaft. The braking device 400 is installed at this position to brake this position of the idle shaft 320 when braking is needed.

[0059] In one embodiment, the brake device 400 is a disc brake.

[0060] like Figure 3 As shown, the disc brake includes a brake housing 410, a fixed disc 420, a movable disc 430 and a control valve 440. The brake housing 410 is fixedly mounted on the gear box, and the movable disc 430 is connected to the idle shaft 320 and rotates with the idle shaft 320. The fixed disc 420 is installed in the brake housing 410, and the fixed disc 420 and the movable disc 430 are both perpendicular to the axial direction of the idle shaft 320. The control valve 440 is installed on one side of the fixed disc 420, and the control valve 440 is used to push the fixed disc 420 to rub against the movable disc 430 to achieve braking.

[0061] In one embodiment, the fixed plate 420 can move in the brake housing 410 along the axial direction of the idle shaft 320 to ensure that the fixed plate 420 is pushed by the control valve 440 to rub against the movable plate 430 to generate braking force.

[0062] Preferably, the disc brake has multiple groups of fixed discs 420 and multiple groups of movable discs 430, and the fixed discs 420 and movable discs 430 are staggered to improve the braking effect.

[0063] In one embodiment, the control valve 440 can be a thrust mechanism, the pushing direction of the thrust mechanism is parallel to the axial direction of the idle shaft 320, and the thrust mechanism can extend to push the fixed plate 420 to rub against the moving plate 430 to achieve braking.

[0064] like Figure 3 As described, in one embodiment, a shaft disc seat 431 is provided at one end of the idle shaft 320, and the moving disc 430 is provided on the peripheral wall of the shaft disc seat 431, so that the braking device 400 can be provided at the end of the idle shaft 320, which facilitates the installation of the braking device 400.

[0065] like Figure 4 As shown, the shaft disc seat 431 is a disc-shaped structure, and a plurality of moving discs 430 are fixedly arranged on the circumference of the shaft disc seat 431 . A connecting hole is provided at the center of the shaft disc seat 431 , and the connecting hole is used to install the connecting piece 432 .

[0066] like Figure 3 As described above, the shaft disc seat 431 is connected to the end of the idle shaft 320 by inserting the connecting piece 432 into the connecting hole, thereby realizing a detachable connection between the shaft disc seat 431 and the idle shaft 320 .

[0067] Furthermore, the connecting end face of the shaft disc seat 431 is a conical surface, and the end face of the idle shaft 320 is also a corresponding conical surface. The shaft disc seat 431 and the idle shaft 320 are matched in taper. Of course, the shaft disc seat 431 and the idle shaft 320 can also be connected through end face teeth.

[0068] In one embodiment, the shaft disc seat 431 may not be provided, and a plurality of fixed discs 420 may be fixedly disposed on the peripheral wall of the idle shaft 320 , and the idle shaft 320 and the fixed discs 420 may be directly surrounded by a disc brake.

[0069] like Figure 2 As shown, in one embodiment, a mounting seat 330 is provided on one side of the gearbox housing 110 , a bearing 340 is provided in the mounting seat 330 , and the idle shaft 320 is installed on the bearing 340 to ensure stable rotation of the idle shaft 320 .

[0070] One end of the brake housing 410 may be connected and fixed to the mounting base 330 , or may be connected and fixed to the gear box housing 110 , or may be connected to both at the same time, to ensure that the brake device 400 is installed stably.

[0071] In this embodiment, the gear set 130 includes a driving gear 131 and a driven gear 132. The driving gear 131 is connected to the input shaft 120, the driven gear 132 is connected to the spindle 200, and the idler gear 310 is meshed with the driven gear 132. Figure 1 As shown, the motor 600 is connected to the input shaft 120 through the coupling 610, driving the input shaft 120 and the driving gear 131 to rotate, and the driving gear 131 drives the driven gear 132 and the core shaft 200 to rotate, so that the idle gear 310 and the idle shaft 320 rotate accordingly, and braking the idle shaft 320 also achieves braking of the core shaft 200.

[0072] It is worth noting that the inertial mechanism 300 of this embodiment is not limited to the inertial gear shaft, but may also be other shaft discs connected to the gear set 130. Braking the shaft disc can also realize the drive and brake integration of the gear box.

[0073] Likewise, the brake device 400 is not limited to a disc brake, but may also be a brake caliper, etc. The brake caliper clamps the shaft disc through a control system to achieve drive and braking integration of the gearbox.

[0074] like Figure 1 As shown, in one embodiment, a sleeve 500 is disposed outside the core shaft 200, and the sleeve 500 is connected to the gear box housing 110. The motor 600 is mounted on the sleeve 500. The inertia mechanism 300 is disposed on a side of the sleeve 500 relatively far from the motor 600, so that the motor 600 and the inertia mechanism 300 are respectively located on both sides of the sleeve 500, ensuring that the sleeve 500 is subjected to balanced force.

[0075] In this embodiment, the inertia mechanism 300 is disposed on one side of the gear box, and the braking device 400 is installed on one side of the inertia mechanism 300 for easy maintenance.

[0076] Of course, the inertia mechanism 300 and the braking device 400 can also be arranged inside the gear box to simplify the external structure.

[0077] In one embodiment, the inertia mechanism 300 and the braking device 400 may be disposed on a side of the sleeve 500 relatively close to the motor 600 to fully utilize the space around the sleeve 500 and optimize the space on the other side of the sleeve 500 .

[0078] An embodiment of the present invention also provides a bogie, which has a frame, a shaft sleeve 500 is provided on the frame, and a core shaft 200 is provided in the shaft sleeve 500; wheels are arranged at both ends of the core shaft 200; the bogie has a drive and brake integrated gear box as described above, and the gear box connects the shaft sleeve 500 and the frame.

[0079] Furthermore, an embodiment of the present invention also provides a drive system, which includes a motor 600 and a bogie as described above; the motor 600 is installed on the bogie, the output end of the motor 600 is connected to the gearbox through the input shaft 120, and the output end of the gearbox is connected to the wheelset through the core shaft 200.

[0080] Specifically, the sleeve 500 is arranged on the bogie, the spindle 200 is arranged in the sleeve 500, the wheels are arranged at both ends of the spindle 200, and the motor 600 is installed on the sleeve 500. The gear box is connected to the sleeve 500, the input end of the gear box is connected to the motor 600 through the input shaft 120, and the output end of the gear box is connected to the wheels through the spindle 200.

[0081] The gearbox of the drive system realizes the integration of braking and driving, so the bogie and drive system do not need to install independent braking devices, which saves the cost of installing a separate braking device, optimizes the bogie space, and is conducive to the lightweight design of rail vehicles.

[0082] An embodiment of the present invention further provides a rail vehicle, wherein the driving system as described above is arranged below or above the body of the rail vehicle. Therefore, the rail vehicle also has all the above advantages, which will not be described in detail here.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drive-brake integrated gearbox, characterized in that: include: Gearbox housing; A gear set is arranged in the gear box housing, the input end of the gear set is connected to the input shaft, and the output end of the gear set is connected to the core shaft; An inertia mechanism, connected to the gear set and adapted to rotate with the gear set; A braking device is connected to the inertia mechanism, and the braking device is suitable for applying a braking force to the inertia mechanism to brake the gear set and the spindle.

2. The drive-brake integrated gearbox according to claim 1, characterized in that: The idle mechanism is an idle gear shaft, which includes an idle gear and an idle shaft connected to each other. The idle gear is connected to the gear set and is suitable for transmitting torque between the gear set and the idle mechanism. The braking device is arranged at one end of the idle shaft.

3. The drive-brake integrated gearbox according to claim 2, characterized in that: The braking device is a disc brake; The disc brake includes a brake housing, a fixed disc, a movable disc and a control valve. The movable disc is connected to the idle shaft and is suitable for rotating with the idle shaft. The fixed disc is connected to the brake housing. The control valve is suitable for pushing the fixed disc to achieve braking by friction with the movable disc.

4. The drive-brake integrated gearbox according to claim 3, characterized in that: A shaft disc seat is provided at one end of the idle shaft, the moving disc is arranged on the peripheral wall of the shaft disc seat, and the shaft disc seat and the idle shaft are detachably connected via a connecting piece.

5. The drive-brake integrated gearbox according to claim 4, characterized in that: A mounting seat is provided on one side of the gear box housing, the mounting seat is provided with a bearing, the idle shaft is mounted on the bearing, and the brake housing is connected to the mounting seat.

6. The drive-brake integrated gearbox according to claim 4, characterized in that: The gear set includes a driving gear and a driven gear, the driving gear is connected to the input shaft, the driven gear is connected to the spindle, and the idler gear is meshed and connected with the driven gear.

7. The driving and braking integrated gearbox according to claim 1, characterized in that: The inertia mechanism is arranged on a side of the core shaft relatively far away from the motor.

8. A bogie, characterized in that: include: Framework; A shaft sleeve is arranged on the frame, and a core shaft is arranged in the shaft sleeve; Wheel sets, arranged at both ends of the mandrel; The drive-brake integrated gearbox according to any one of claims 1 to 7, wherein the gearbox connects the bushing and the frame.

9. A drive system, characterized in that: include: Motor; The bogie as claimed in claim 8; The motor is mounted on the bogie, the output end of the motor is connected to the gear box via an input shaft, and the output end of the gear box is connected to the wheelset via the core shaft.

10. A rail vehicle, characterized in that: include: Vehicle body; The drive system according to claim 9, wherein the drive system is mounted on the vehicle body.

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