Coaxial motor bogie for new energy working condition vehicle

Abstract

The utility model discloses a coaxial motor bogie for a new energy working condition vehicle, which comprises a framework, a bearing seat, wheels and a direct drive motor, and the bearing seat is connected to the framework; the wheels are connected to the bearing seats; the utility model has the benefits that the direct-drive motor is directly connected with the wheels, so that a complex transmission device is omitted, the structure of the whole bogie is more compact, the energy loss in the power transmission process is reduced, and the transmission efficiency is improved; the compact bogie structure can make more space for the interior of the vehicle, and the space is used for arranging batteries, control equipment and other important parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of working condition vehicles, concretely relates to a coaxial motor bogie for new energy working condition vehicles. BACKGROUND

[0002] As the main transport tool of the special railway line of large mining enterprises such as metallurgy, mine, hydraulic reversing petroleum chemical industry, electric power and port and the shunting or small operation of the small classification station in the railway, the working condition vehicle has the advantages of large transport capacity, flexible and convenient operation, and is suitable for the special harsh operating conditions and environment of mining enterprises.

[0003] The Chinese invention with the publication number CN112644542B proposes a bogie, which comprises a framework and a linear motor, the linear motor is installed below the framework, the linear motor is the driving device of the bogie, the linear motor is hoisted on a primary cross beam through a vertical hanger and is located below the axle, the linear motor is connected to the axle box through a transverse hanger, the linear motor is connected to the bottom of the framework longitudinal beam through a traction rod, the linear motor has a linear motor front end part and a linear motor rear end part arranged along the longitudinal direction, the linear motor front end part and the linear motor rear end part are both connected with two vertical hangers, the two vertical hangers are symmetrically arranged on both sides of the axle, the axle box comprises a left axle box and a right axle box oppositely arranged on each axle, the transverse hanger comprises a first transverse hanger and a second transverse hanger horizontally arranged along the transverse direction, the first transverse hanger connects the linear motor front end part and the right axle box corresponding in position to the linear motor front end part, the second transverse hanger connects the linear motor rear end part and the left axle box corresponding in position to the linear motor rear end part, the traction rod is provided with two and is arranged obliquely along the longitudinal direction, and the two traction rods are symmetric along the longitudinal center line of the linear motor.

[0004] In view of the related technology in the above, the following defects exist: the motor is connected with the axle through the left axle box, the right axle box and multiple rods, the structure is complex, occupies large space and has low transmission efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical deficiencies, and proposes a coaxial motor bogie for new energy working condition vehicles, which solves the technical problem of the existing technology that the motor is connected with the axle through the left axle box, the right axle box and multiple rods, and the structure is complex.

[0006] To achieve the above technical purpose, the technical scheme of the utility model provides a coaxial motor bogie for new energy working condition vehicles, which comprises a framework;

[0007] A bearing seat is connected to the framework;

[0008] A wheel is connected to the bearing seat; and

[0009] The direct drive motor has an output shaft connected to the wheel.

[0010] In some embodiments, the bogie further comprises a bearing bracket, a first bracket seat, a first pull rod and a first mechanical damper, the bearing seat is connected to the bearing bracket, the first bracket seat and the first mechanical damper are located on one side of the bearing bracket, the first bracket seat is connected to the frame, one end of the first pull rod is hinged to the first bracket seat, the other end of the first pull rod is hinged to the bearing bracket, one end of the first mechanical damper is connected to the first bracket seat, and the other end of the first mechanical damper is connected to the bearing bracket.

[0011] In some embodiments, the bogie further comprises a second bracket seat, a second pull rod and a second mechanical damper, the second bracket seat and the second mechanical damper are located on the other side of the bearing bracket, the second bracket seat is connected to the frame, one end of the second pull rod is hinged to the second bracket seat, the other end of the second pull rod is hinged to the bearing bracket, one end of the second mechanical damper is connected to the frame, and the other end of the second mechanical damper is connected to the bearing bracket.

[0012] In some embodiments, the bogie further comprises a hydraulic damper, the hydraulic damper comprises a cylinder and a plug, the plug is slidingly connected to the cylinder along the length direction of the cylinder, one end of the cylinder is hinged to the frame, and the other end of the plug away from the cylinder is hinged to the bearing bracket.

[0013] In some embodiments, the first mechanical damper comprises a first telescopic rod and a first spring, the first spring is sleeved on the first telescopic rod, one end of the first telescopic rod is connected to the first bracket seat, the other end of the first telescopic rod is connected to the bearing bracket, one end of the first spring is connected to the first bracket seat, and the other end of the first spring is connected to the bearing bracket.

[0014] In some embodiments, the second mechanical damper comprises a second telescopic rod and a second spring, the second spring is sleeved on the second telescopic rod, one end of the second telescopic rod is connected to the frame, the other end of the second telescopic rod is connected to the bearing bracket, one end of the second spring is connected to the frame, and the other end of the second spring is connected to the bearing bracket.

[0015] In some embodiments, the frame comprises an axle, two longitudinal beams and a plurality of cross beams, the axle is rotatably connected between the opposite bearing seats, the wheel is connected to the end of the axle, the two longitudinal beams are opposite to each other, the plurality of cross beams are sequentially and spacedly connected between the two longitudinal beams along the length direction of the longitudinal beam, and the axle is located between the adjacent cross beams.

[0016] In some embodiments, the bogie further includes a braking mechanism, which includes a hydraulic pipe, a hydraulic cylinder, a piston, a caliper, a backplate, and brake pads. The hydraulic pipe and the caliper are connected to a crossbeam, the hydraulic cylinder is connected to the caliper, the outlet of the hydraulic pipe is connected to the inlet of the hydraulic cylinder, the piston is slidably connected to the hydraulic cylinder, the backplate is hinged to the caliper, and the brake pads are connected to the backplate, with the brake pads facing the wheels.

[0017] In some embodiments, the clamp body includes two clamp plates, and the braking mechanism further includes a reinforcing plate connected between the two clamp plates.

[0018] In some embodiments, the braking mechanism further includes a muffler connected to the piston.

[0019] Compared with the prior art, the beneficial effects of this utility model include: the direct drive motor is directly connected to the wheel, eliminating the complex transmission device, making the entire bogie structure more compact, reducing energy loss in the power transmission process, improving transmission efficiency, and the compact bogie structure can free up more space inside the vehicle for arranging batteries, control equipment and other important components. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the bogie provided by this utility model;

[0021] Figure 2 This utility model provides Figure 1 Enlarged view of the local structure at point A;

[0022] Figure 3 This utility model provides Figure 1 Enlarged view of the local structure at point B from a first-person perspective;

[0023] Figure 4 This utility model provides Figure 1 Enlarged view of the local structure at point B from a second perspective.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1, frame; 11, longitudinal beam; 12, cross beam; 2, bearing seat; 21, bearing frame; 22, first frame seat; 23, first pull rod; 24, first mechanical shock absorber; 241, first telescopic rod; 242, first spring; 25, second frame seat; 26, second pull rod; 27, second mechanical shock absorber; 271, second telescopic rod; 272, second spring; 28, hydraulic shock absorber; 281, cylinder body; 282, plug body; 3, wheel shaft; 4, wheel; 5, direct drive motor; 6, brake mechanism; 61, hydraulic pipe; 62, hydraulic cylinder; 63, piston; 64, clamp body; 641, clamp sheet; 65, back plate; 66, brake pad; 67, reinforcing plate; 68, sound-absorbing sheet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0027] The utility model provides a kind of coaxial motor bogie for new energy working condition vehicle, its structure as Figure 1 Figure 4 As shown in the figure, including frame 1, bearing seat 2, wheel 4 and direct drive motor 5.

[0028] The bearing seat 2 is connected to the frame 1.

[0029] The wheel 4 is connected to the bearing seat 2.

[0030] The output shaft of the direct drive motor 5 is connected to the wheel 4.

[0031] In use, direct drive motor 5 as power source, after energization, the stator winding in its interior generates rotating magnetic field, and interacts with rotor, so that output shaft rotates. Since output shaft is directly connected to wheel 4, the power output by motor can be directly transmitted to wheel 4, drives wheel 4 to rotate, so that the advance or retreat of vehicle is realized. Frame 1 is the support structure of entire bogie, bears the weight of vehicle and various loads in running process. Bearing seat 2 is connected to frame 1, provides support and rotation fulcrum for wheel shaft 3. Bearing seat 2 can reduce frictional resistance when wheel 4 rotates, ensures that wheel 4 can rotate flexibly.

[0032] In the utility model, direct drive motor 5 is directly connected to wheel 4, omits complex transmission device, makes the structure of entire bogie more compact, reduces energy loss in power transmission process, improves transmission efficiency, and compact bogie structure can vacate more space for vehicle interior, for arranging battery, control equipment and other important components.

[0033] In order to improve the damping effect of bogie, please refer to​Figure 2 In a preferred embodiment, the bogie further comprises a bearing bracket 21, a first bracket 22, a first pull rod 23, and a first mechanical shock absorber 24, the bearing seat 2 is connected to the bearing bracket 21, the first bracket 22 and the first mechanical shock absorber 24 are located on one side of the bearing bracket 21, the first bracket 22 is connected to the frame 1, one end of the first pull rod 23 is hinged to the first bracket 22, the other end of the first pull rod 23 is hinged to the bearing bracket 21, one end of the first mechanical shock absorber 24 is connected to the first bracket 22, and the other end of the first mechanical shock absorber 24 is connected to the bearing bracket 21.

[0034] In use, the bearing seat 2 is connected to the bearing bracket 21, and the bearing seat 2 is used to install bearings to enable the wheel 4 to rotate flexibly. The bearing bracket 21 serves as a carrier to preliminarily receive the force transmitted by the wheel 4 and disperse the force through its structure. The first bracket 22 is connected to the frame 1 to provide a mounting support point for the first pull rod 23 and the first mechanical shock absorber 24. The force transmitted by these components is fed back to the frame 1. One end of the first pull rod 23 is hinged to the first bracket 22, and the other end is hinged to the bearing bracket 21. This hinged connection allows the first pull rod 23 to move within a certain range during vehicle operation. When the wheel 4 is subjected to lateral force or force in other directions from the road surface, the bearing bracket 21 will have a tendency to move relatively. At this time, the first pull rod 23 can limit the excessive movement of the bearing bracket 21, maintain the relative stable position relationship between the bearing bracket 21 and the frame 1 through its tension or pressure, and maintain the straightness and maneuverability of the vehicle during operation. One end of the first mechanical shock absorber 24 is connected to the first bracket 22, and the other end is connected to the bearing bracket 21. When the vehicle is running on uneven road surface, the wheel 4 will be subjected to impact force from the road surface, and these impact forces are transmitted to the bearing bracket 21 through the wheel 4. The first mechanical shock absorber 24 plays a role at this time, thereby reducing the vibration amplitude of the bearing bracket 21.

[0035] To further improve the shock absorption effect of the bogie, please refer to Figure 2 In a preferred embodiment, the bogie further comprises a second bracket 25, a second pull rod 26, and a second mechanical shock absorber 27, the second bracket 25 and the second mechanical shock absorber 27 are located on the other side of the bearing bracket 21, the second bracket 25 is connected to the frame 1, one end of the second pull rod 26 is hinged to the second bracket 25, the other end of the second pull rod 26 is hinged to the bearing bracket 21, one end of the second mechanical shock absorber 27 is connected to the frame 1, and the other end of the second mechanical shock absorber 27 is connected to the bearing bracket 21.

[0036] In use, the second bracket 25 is connected to the frame 1, providing a mounting base and support point for the second pull rod 26 and the second mechanical shock absorber 27. The second pull rod 26 is hingedly connected at one end to the second bracket 25 and at the other end to the bearing bracket 21. This hinged connection allows for a certain range of relative movement, as the bearing bracket 21 will tend to move when the bogie is subjected to lateral, longitudinal or other forces from the road surface during travel. The second pull rod 26 limits the excessive movement of the bearing bracket 21 by stretching or compressing itself, maintaining the relative position between the bearing bracket 21 and the frame 1. The second mechanical shock absorber 27 is connected at one end to the frame 1 and at the other end to the bearing bracket 21. When the vehicle is travelling on uneven road surfaces or encounters a bump, the impact force received by the wheel 4 is transmitted to the bearing bracket 21 and then to the second mechanical shock absorber 27. This reduces the amplitude of the shock of the bearing bracket 21 and the entire bogie, improving the comfort of the vehicle during travel.

[0037] To further enhance the shock absorption effect of the bogie, please refer to Figure 2 In a preferred embodiment, the bogie further comprises a hydraulic shock absorber 28, which comprises a cylinder body 281 and a plug body 282, the plug body 282 being slidingly connected inside the cylinder body 281 along the length direction of the cylinder body 281, the cylinder body 281 being hingedly connected to the frame 1 at the end, and the plug body 282 being hingedly connected to the bearing bracket 21 at the end away from the cylinder body 281.

[0038] In use, during the operation of the hydraulic shock absorber 28, the movement of the plug body 282 causes the hydraulic oil to flow between different chambers, and friction occurs between the hydraulic oil and the cylinder body 281, the plug body 282 and the throttle passage and other components. At the same time, energy loss occurs when the hydraulic oil passes through the throttle hole. These frictions and energy losses convert the mechanical energy generated by the vehicle vibration into heat energy, which is dissipated to the surrounding environment through the shell of the hydraulic shock absorber 28. In this way, the energy of the vehicle vibration is gradually consumed, effectively reducing the vibration of the vehicle and improving the stability and comfort of the vehicle during travel.

[0039] To achieve the shock absorption effect of the first mechanical shock absorber 24, please refer to Figure 2 In a preferred embodiment, the first mechanical shock absorber 24 comprises a first telescopic rod 241 and a first spring 242, the first spring 242 being sleeved on the first telescopic rod 241, the first telescopic rod 241 being connected at one end to the first bracket 22, the other end of the first telescopic rod 241 being connected to the bearing bracket 21, the first spring 242 being connected at one end to the first bracket 22, the other end of the first spring 242 being connected to the bearing bracket 21.

[0040] In use, when the vehicle is running, the vibration or impact force is first transmitted to the first telescopic rod 241 and the first spring 242 through the bearing bracket 21. Since the first telescopic rod 241 is connected to the bearing bracket 21 at one end and to the first bracket seat 22 at the other end, it will first bear and transmit part of the impact force. The first telescopic rod 241 can perform telescopic movement under the action of the impact force, and preliminarily buffer part of the impact force by its own telescopic movement to reduce the transmission of vibration. At the same time, the first spring 242 sleeved on the first telescopic rod 241 also begins to play a role. The first spring 242 is connected to the first bracket seat 22 at one end and to the bearing bracket 21 at the other end, and when subjected to the impact force, the first spring 242 will be elastically deformed. The first spring 242 will generate an elastic force opposite to the direction of the external force during compression or stretching, and this elastic force can resist the impact force and convert the impact force into the elastic potential energy of the first spring 242, thereby further reducing the amplitude of vibration and achieving the effect of shock absorption.

[0041] In order to achieve the effect of the second mechanical shock absorber 27, please refer to Figure 2 In a preferred embodiment, the second mechanical shock absorber 27 comprises a second telescopic rod 271 and a second spring 272, the second spring 272 is sleeved on the second telescopic rod 271, one end of the second telescopic rod 271 is connected to the framework 1, the other end of the second telescopic rod 271 is connected to the bearing bracket 21, one end of the second spring 272 is connected to the framework 1, and the other end of the second spring 272 is connected to the bearing bracket 21.

[0042] In use, when the vehicle is running, the wheel 4 will generate vibration and impact force due to road conditions, and these forces are transmitted to the bearing bracket 21 through the wheel 4. Since the second telescopic rod 271 is connected to the bearing bracket 21 at one end and to the framework 1 at the other end, the bearing bracket 21 will transmit the impact force to the second telescopic rod 271, and the second telescopic rod 271 will perform telescopic movement according to the size and direction of the force under the action of the impact force. Its telescopic process can absorb and slow down the transmission of the impact force to a certain extent, and play a preliminary buffering role. The second spring 272 sleeved on the second telescopic rod 271 will be elastically deformed under the action of the impact force. When the second spring 272 is compressed or stretched by the impact force transmitted from the bearing bracket 21 through the second telescopic rod 271, it will generate an elastic force resisting the impact force, and convert the impact force into the elastic potential energy of the spring, thereby further reducing the amplitude of vibration and achieving the effect of shock absorption.

[0043] In order to improve the overall strength of the framework 1, please refer to Figure 1In a preferred embodiment, the frame 1 comprises an axle 3, two longitudinal beams 11 and a plurality of cross beams 12, the axle 3 is rotatably connected between two opposite bearing seats 2, the wheels 4 are connected to the ends of the axle 3, the two longitudinal beams 11 are opposite to each other, and the plurality of cross beams 12 are sequentially and spacedly connected between the two longitudinal beams 11 along the length direction of the longitudinal beams 11, and the axle 3 is located between adjacent cross beams 12.

[0044] In use, the two opposite longitudinal beams 11 and the plurality of spaced cross beams 12 form a stable frame structure. The longitudinal beams 11 mainly bear the longitudinal load and part of the vertical load of the vehicle. The cross beams 12 enhance the lateral stability of the frame 1, bear the lateral force generated during the turning of the vehicle, and together with the longitudinal beams 11 bear the weight of the vehicle in the vertical direction, thereby evenly dispersing the weight, and the axle 3 provides a basis for the rotation of the wheels 4.

[0045] In order to realize the braking effect of the bogie, please refer to Figure 3 In a preferred embodiment, the bogie further comprises a brake mechanism 6, the brake mechanism 6 comprises a hydraulic pipe 61, a hydraulic cylinder 62, a piston 63, a caliper body 64, a back plate 65 and a brake pad 66, the hydraulic pipe 61 and the caliper body 64 are connected to the cross beam 12, the hydraulic cylinder 62 is connected to the caliper body 64, the outlet of the hydraulic pipe 61 is in communication with the inlet of the hydraulic cylinder 62, the piston 63 is slidably connected to the hydraulic cylinder 62, the back plate 65 is hingedly connected to the caliper body 64, and the brake pad 66 is connected to the back plate 65, and the brake pad 66 faces the wheels 4.

[0046] In use, the hydraulic pipe 61 and the caliper body 64 are connected to the cross beam 12 to deliver high-pressure brake fluid to the inlet of the hydraulic cylinder 62 to provide a power source for braking. After the high-pressure brake fluid delivered by the hydraulic pipe 61 enters the hydraulic cylinder 62, the piston 63 will be pushed to do linear sliding in the hydraulic cylinder 62 due to the pressure of the liquid. The back plate 65 is hingedly connected to the caliper body 64, when the piston 63 acts, the back plate 65 will rotate with the movement of the piston 63, so that the brake pad 66 connected to the back plate 65 accurately adheres to the surface of the wheels 4. The rotational speed of the wheels 4 is gradually reduced, and finally the braking of the vehicle is realized.

[0047] In order to improve the strength of the caliper body 64, please refer to Figure 3 In a preferred embodiment, the caliper body 64 comprises two caliper pieces 641, and the brake mechanism 6 further comprises a reinforcing plate 67, and the reinforcing plate 67 is connected between the two caliper pieces 641.

[0048] In use, when braking, the brake pad 66 is rubbed with the wheel 4 to generate a great braking force, which is transmitted to the caliper body 64 through the back plate 65. The reinforcing plate 67 can make the two caliper pieces 641 bear the braking force cooperatively, uniformly disperse the force, prevent a single caliper piece 641 from being deformed and damaged due to excessive force, improve the overall bearing capacity of the caliper body 64, and ensure reliable work of the brake mechanism 6.

[0049] In order to achieve the noise reduction effect of the bogie, please refer to Figure 4 In a preferred embodiment, the brake mechanism 6 further comprises a sound-absorbing piece 68 connected to the piston 63.

[0050] In use, when braking, the piston 63 pushes the brake pad 66 to contact and rub with the wheel 4 or the brake disc, which generates vibration, and the vibration is transmitted through the piston 63 and other components, which can cause noise. The sound-absorbing piece 68 can buffer the vibration transmission between the piston 63 and other components, reduce the vibration energy, thereby reducing the noise caused by vibration, and making the braking process quieter.

[0051] In order to better understand the utility model, the following will be combined Figure 1 Figure 4 The working principle of the technical scheme of the utility model, a coaxial motor bogie for new energy working condition vehicles, is described in detail: the direct drive motor 5 serves as a power source, and after being energized, the stator winding inside generates a rotating magnetic field, which interacts with the rotor to make the output shaft rotate. Since the output shaft is directly connected to the wheel 4, the power output by the motor can be directly transmitted to the wheel 4 to drive the wheel 4 to rotate, thereby realizing the forward or backward movement of the vehicle. The frame 1 is the supporting structure of the entire bogie, which bears the weight of the vehicle and various loads during driving. The bearing seat 2 is connected to the frame 1 to provide a support and rotating fulcrum for the wheel shaft 3. The bearing seat 2 can reduce the friction resistance when the wheel 4 rotates, ensuring that the wheel 4 can rotate flexibly.

[0052] The specific embodiments of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model shall be included in the protection scope of the claims of the utility model.​

Claims

1. A coaxial motor bogie for a new energy working vehicle, characterized in that, The application relates to a bogie, which comprises a frame, a bearing seat connected to the frame, a wheel connected to the bearing seat, a direct-drive motor, the output shaft of which is connected to the wheel, a bearing frame, a first frame seat, a first pull rod, and a first mechanical shock absorber, the bearing seat being connected to the bearing frame, the first frame seat and the first mechanical shock absorber being located on one side of the bearing frame, the first frame seat being connected to the frame, one end of the first pull rod being hinged to the first frame seat, the other end of the first pull rod being hinged to the bearing frame, one end of the first mechanical shock absorber being connected to the first frame seat, and the other end of the first mechanical shock absorber being connected to the bearing frame. The bogie further comprises a second frame seat, a second pull rod, and a second mechanical shock absorber, the second frame seat and the second mechanical shock absorber being located on the other side of the bearing frame, the second frame seat being connected to the frame, one end of the second pull rod being hinged to the second frame seat, the other end of the second pull rod being hinged to the bearing frame, one end of the second mechanical shock absorber being connected to the frame, and the other end of the second mechanical shock absorber being connected to the bearing frame. The bogie further comprises a hydraulic shock absorber, which comprises a cylinder and a plug, the plug being slidably connected to the cylinder along the length direction of the cylinder, one end of the cylinder being hinged to the frame, and the other end of the plug being hinged to the bearing frame. The first mechanical shock absorber comprises a first telescopic rod and a first spring, the first spring being sleeved on the first telescopic rod, one end of the first telescopic rod being connected to the first frame seat, the other end of the first telescopic rod being connected to the bearing frame, one end of the first spring being connected to the first frame seat, and the other end of the first spring being connected to the bearing frame. The second mechanical shock absorber comprises a second telescopic rod and a second spring, the second spring being sleeved on the second telescopic rod, one end of the second telescopic rod being connected to the frame, the other end of the second telescopic rod being connected to the bearing frame, one end of the second spring being connected to the frame, and the other end of the second spring being connected to the bearing frame. The frame comprises an axle, two longitudinal beams, and a plurality of cross beams, the axle being rotatably connected between the opposite bearing seats, the wheel being connected to the end of the axle, the two longitudinal beams being opposite to each other, the plurality of cross beams being sequentially and spacedly connected between the two longitudinal beams along the length direction of the longitudinal beams, and the axle being located between the adjacent cross beams.

2. The coaxial motor bogie for new energy working condition vehicle according to claim 1, characterized in that, The bogie further comprises a brake mechanism, which comprises a hydraulic pipe, a hydraulic cylinder, a piston, a caliper body, a back plate, and a brake pad, the hydraulic pipe and the caliper body being connected to the cross beam, the hydraulic cylinder being connected to the caliper body, the outlet of the hydraulic pipe being in communication with the inlet of the hydraulic cylinder, the piston being slidably connected to the hydraulic cylinder, the back plate being hinged to the caliper body, the brake pad being connected to the back plate, and the brake pad facing the wheel.

3. The coaxial motor bogie for new energy working condition vehicle according to claim 1, characterized in that, The caliper body comprises two caliper pieces, the brake mechanism further comprises a reinforcing plate, and the reinforcing plate is connected between the two caliper pieces.

4. The coaxial motor bogie for new energy working condition vehicle according to claim 1, characterized in that, The brake mechanism further comprises a sound-absorbing piece, and the sound-absorbing piece is connected to the piston.

5. The coaxial motor bogie for new energy working condition vehicle according to claim 2, characterized in that, ​ 6. The coaxial motor bogie for new energy working condition vehicle according to claim 1, characterized in that, ​ 7. The coaxial motor bogie for new energy working condition vehicle according to claim 6, characterized in that, ​ 8. The coaxial motor bogie for new energy working condition vehicle according to claim 7, characterized in that, ​ 9. The coaxial motor bogie for new energy working condition vehicle according to claim 7, characterized in that, ​

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