Wheel drive system, bogie and rail vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a wheel drive system, a bogie and a railway vehicle, the wheel drive system comprises two wheel sets, each wheel set comprises a shaft sleeve and a wheel arranged at the end of the shaft sleeve, the shaft sleeve is further provided with a drive motor and a gearbox, one end of the drive motor is connected with the shaft sleeve, and the other end of the drive motor is connected with a framework; one end of the gearbox is connected with the driving motor, and the other end is connected with the shaft sleeve. By means of the mode, one end of the driving motor is connected with the framework and used for hanging the driving motor and the gearbox and bearing supporting traction and braking torque, connecting mechanisms such as hanging rods do not need to be arranged on the gearbox to be connected with the framework, and installation structures for the driving motor and the gearbox on the wheel driving system can be reduced. And the structure of the wheel drive system is lightened, and the installation space of the whole drive system is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a wheel drive system, a bogie and a rail vehicle. Background Art

[0002] The wheel drive system is one of the most important components of a rail vehicle. It is equipped with a drive motor and a gearbox. The drive motor and the gearbox are separately arranged and each occupies an independent structural space. Such a separate arrangement will increase the installation structure of the wheel drive system and the overall size of the wheel drive system is too large to meet the requirements of lightweight rail vehicles. Summary of the invention

[0003] The embodiment of the present invention provides a wheel drive system to solve the technical problem in the prior art that the overall structure size of the wheel drive system is large and does not meet the lightweight requirement.

[0004] An embodiment of the present invention provides a wheel drive system, comprising:

[0005] Two sets of wheelsets, each of which comprises a shaft sleeve and a wheel disposed at an end of the shaft sleeve;

[0006] It also includes a driving motor and a gear box. One end of the driving motor is connected to the shaft sleeve, and the other end is connected to the frame. One end of the gear box is connected to the driving motor, and the other end is connected to the shaft sleeve.

[0007] According to one embodiment of the present invention, the driving motor and the shaft sleeve are detachably connected.

[0008] According to one embodiment of the present invention, at least one connecting boss is provided on the outer side of the sleeve;

[0009] At least one matching boss is arranged on the outer side of the driving motor, and the matching boss and the connecting boss are detachably connected via a threaded connector.

[0010] According to one embodiment of the present invention, the number of the connecting bosses and the number of the matching bosses are both four;

[0011] The connecting bosses are arranged at intervals on two opposite sides of the shaft sleeve in the radial direction.

[0012] According to one embodiment of the present invention, the threaded connector is a stud, one end of which is connected to the matching boss;

[0013] The connecting boss is provided with a mounting hole, the other end of the stud is passed through the mounting hole and the connecting boss and the matching boss are locked by a locking nut.

[0014] According to an embodiment of the present invention, a suspension rod is provided on the driving motor, and one end of the suspension rod is detachably connected to the frame.

[0015] According to an embodiment of the present invention, the gearbox further comprises a brake, which is mounted on the bushing and integrated with the end of the gearbox.

[0016] According to an embodiment of the present invention, the brake is detachably connected to the gear box.

[0017] According to an embodiment of the present invention, the brake and the gear box are detachably connected via flange bolts.

[0018] An embodiment of the present invention further provides a bogie, comprising:

[0019] Framework;

[0020] As described above, the wheel drive system has one end connected to the frame.

[0021] An embodiment of the present invention further provides a rail vehicle, comprising:

[0022] Vehicle body;

[0023] The above-mentioned bogie is installed on the car body.

[0024] In the wheel drive system provided by the embodiment of the present invention, one end of the drive motor is connected to the frame for suspending the drive motor and the gear box to bear the supporting traction and braking torque. There is no need to set a connecting mechanism such as a hanger on the gear box to connect it to the frame, which is beneficial to reducing the installation structure of the drive motor and the gear box on the wheel drive system, and is beneficial to lightweighting the wheel drive system structure, saving the installation space of the entire drive system.

[0025] The bogie provided in the embodiment of the present invention includes the above-mentioned wheel drive system and has all the beneficial effects of the above-mentioned wheel drive system, which will not be described here in order to avoid repetition.

[0026] The rail vehicle provided in the embodiment of the present invention includes the above-mentioned bogie and also has all the beneficial effects of the above-mentioned wheel drive system, which will not be described here in detail to avoid repetition. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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.

[0028] Figure 1 It is a structural schematic diagram of the framework of the wheel drive system of the present invention.

[0029] Reference numerals:

[0030] 20, wheelset; 210, bushing; 2110, connecting boss; 2111, mounting hole; 220, wheel;

[0031] 30. driving motor; 310. matching boss; 320. suspension rod;

[0032] 40. Gear box;

[0033] 50. Brake. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Combine the following Figure 1 Specific embodiments of the present invention are described.

[0040] See also Figure 1 The embodiment of the present invention provides a rail vehicle, including a vehicle body and a bogie, wherein the bogie is mounted on the vehicle body. The bogie includes a frame and a wheel drive system, wherein one end of the wheel drive system is connected to the frame.

[0041] In one embodiment, the wheel drive system includes two sets of wheel pairs 20, each wheel pair 20 includes a shaft sleeve 210 and a wheel 220 arranged at the end of the shaft sleeve 210, and the shaft sleeve 210 is also provided with a drive motor 30 and a gear box 40, one end of the drive motor 30 is connected to the shaft sleeve 210, and the other end is connected to the frame, and one end of the gear box 40 is connected to the drive motor 30, and the other end is connected to the shaft sleeve 210.

[0042] One end of the drive motor 30 is connected to the frame for hanging the drive motor 30 and the gear box 40 to bear the support traction and braking torque. The gear box 40 no longer needs to be provided with a connecting mechanism such as a hanger 320 to connect with the frame, which is beneficial to reducing the installation structure of the drive motor 30 and the gear box 40 on the wheel drive system, thereby facilitating the lightweight structure of the wheel drive system and saving the installation space of the entire drive system. The drive system here includes the drive motor 30, the gear box 40 and the brake 50, etc.

[0043] In one embodiment, the driving motor 30 and the shaft sleeve 210 are detachably connected.

[0044] The drive motor 30 and the shaft sleeve 210 are detachably connected, which is conducive to the maintenance of the drive motor 30. When the drive motor 30 needs to be repaired, the drive motor 30 can be removed from the shaft sleeve 210 and then repaired, which is more convenient and efficient for the maintenance of the drive system.

[0045] At least one connecting boss 2110 is disposed on the outer side of the shaft sleeve 210; at least one matching boss 310 is disposed on the outer side of the driving motor 30, and the matching boss 310 and the connecting boss 2110 are detachably connected via a threaded connector.

[0046] In one embodiment, the connecting boss 2110 is integrally provided with the shaft sleeve 210, and the matching boss 310 is integrally provided with the driving motor 30. Such an arrangement can save the production cost of the shaft sleeve 210 and the driving motor 30.

[0047] In another embodiment, the mating boss 310 and the drive motor 30 may also be detachably connected by bolts or other connecting members. Similarly, the connecting boss 2110 and the shaft sleeve 210 may also be detachably connected by bolts or other connecting members, so as to facilitate the maintenance and disassembly between the drive motor 30 and the shaft sleeve 210.

[0048] In one embodiment, the number of the connecting bosses 2110 and the number of the matching bosses 310 are both four, and the connecting bosses 2110 are arranged at opposite sides of the shaft sleeve 210 in a radial direction with two bosses spaced apart from each other.

[0049] The four connecting bosses 2110 and the matching bosses 310 can improve the connection stability between the drive motor 30 and the shaft sleeve 210. In some other embodiments, the number of the connecting bosses 2110 and the matching bosses 310 can also be six, eight, etc., which is not limited here.

[0050] In one embodiment, the threaded connector is a stud, one end of which is connected to the mating boss 310, a mounting hole 2111 is provided on the connecting boss 2110, and the other end of the stud is passed through the mounting hole 2111 and the connecting boss 2110 and the mating boss 310 are locked by locking.

[0051] In some further embodiments, the threaded connector may also be a screw, which passes through the connecting boss 2110 and the matching boss 310 in sequence to connect the sleeve 210 and the drive motor 30, which is not limited here.

[0052] The wheel drive system is also provided with a brake 50 , which is mounted on the shaft sleeve 210 and integrated at the end of the gear box 40 .

[0053] With such arrangement, the brake 50 does not need to be provided with an additional connection structure, which can simplify the structure of the wheel drive system and meet the requirement of lightweighting the wheel drive system.

[0054] In one embodiment, the brake 50 is detachably connected to the gear box 40 .

[0055] An axle for controlling the rotation of the wheel 220 is provided in the shaft sleeve 210. The output end of the drive motor 30 is connected to the gear set in the gear box 40, and the output end of the gear set is connected to the axle. The operation of the drive motor 30 can drive the axle to rotate through the gear box 40, and then drive the wheel 220 to rotate. The brake 50 adopts a full-disc brake device, which forms a whole with the gear box 40. The function of the brake 50 is to brake. A brake cylinder (not shown) is installed at the end of the brake 50. The action of the brake cylinder can press the dynamic disc and the static disc, and its friction torque can brake the axle. The braking principle of the drive motor 30, the gear box 40 and the brake 50 belongs to the technical means well known to those skilled in the art, and will not be elaborated here.

[0056] In one embodiment, the brake 50 and the gear box 40 are detachably connected via flange bolts.

[0057] In this way, when maintenance is required, the gear box 40 and the brake 50 can be removed together, making maintenance and disassembly more convenient.

[0058] In summary, the gear box 40 does not need to be provided with a suspension rod 320, which can simplify the structure of the gear box 40. The drive motor 30 and the gear box 40 are simplified into an elastic integral type, which can reduce the relative displacement between the drive motor 30 shaft and the gear box 40, which is beneficial to the selection of the coupling, saves the space of the drive system, and is beneficial to the requirement of lightweight drive system. The brake 50 is installed on the shaft sleeve 210 and the gear box 40. The annular brake disc has only a circumferential load on the axle under the braking condition, and no unidirectional load, so a thinner axle can be selected under the same load conditions.

[0059] 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 wheel drive system, characterized in that: include: Two sets of wheel sets, each of which includes a shaft sleeve and a wheel arranged at the end of the shaft sleeve; it also includes a drive motor and a gear box, one end of the drive motor is connected to the shaft sleeve, and the other end is connected to the frame; one end of the gear box is connected to the drive motor, and the other end is connected to the shaft sleeve.

2. The wheel drive system according to claim 1, characterized in that: The driving motor and the shaft sleeve are detachably connected.

3. The wheel drive system according to claim 2, characterized in that: At least one connecting boss is provided on the outer side of the sleeve; At least one matching boss is arranged on the outer side of the driving motor, and the matching boss and the connecting boss are detachably connected via a threaded connector.

4. The wheel drive system according to claim 3, characterized in that: The number of the connecting bosses and the number of the matching bosses are both four; The connecting bosses are arranged at intervals on two opposite sides of the shaft sleeve in the radial direction.

5. The wheel drive system according to claim 3, characterized in that: The threaded connector is a stud, one end of which is connected to the matching boss; The connecting boss is provided with a mounting hole, the other end of the stud is passed through the mounting hole and the connecting boss and the matching boss are locked by a locking nut.

6. The wheel drive system according to claim 1, characterized in that: The driving motor is provided with a suspension rod, and one end of the suspension rod is detachably connected to the frame.

7. The wheel drive system according to claim 1, characterized in that: A brake is also included, which is mounted on the shaft sleeve and integrated with the end of the gear box.

8. The wheel drive system according to claim 7, characterized in that: The brake is detachably connected to the gear box.

9. A bogie, characterized in that: include: Framework; The wheel drive system according to any one of claims 1 to 8, wherein one end of the wheel drive system is connected to the frame.

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

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