Wheel bogie transmission structure of train model

Abstract

The utility model discloses a wheel bogie transmission structure of a train model, which comprises a mediation gear set and an axle, an output gear at the tail end of the mediation gear set is coaxially connected with a synchromesh gear, the synchromesh gear is meshed with an input gear on the axle, and the input gear is arranged on the axle and is close to a wheel on one side. Aiming at the problem that the appearance simulation degree is insufficient due to the fact that the gear design of the bottom of an existing train model needs to keep space structure balance, the gear on the axle is biased to achieve the effect of simulating the shape of the bottom of a real train.

Description

Technical Field

[0001] The utility model relates to the technical field of models, in particular to a simulation chassis structure of a train model. Background Art

[0002] In the field of train models, enthusiasts pay attention to the degree of simulation of the model, and strive to make it the same as the real vehicle. The closest prior art to this application is CN 111408149 A, which discloses a three-axle railway locomotive power model bogie and transmission device. The gearbox adopts an M-type transmission route design, which significantly relaxes the appearance constraints of the gearbox and can better simulate the three-dimensional structural contours of the traction motor compartment of many electric transmission internal combustion and electric locomotives in real environments. However, there are still certain problems with the simulation of this structure. The gearbox at the bottom of the real train is close to one side of the wheel, that is, the bulge on this side is larger, while the bulge on the middle axle part is smaller. However, the gear set on the miniature train model occupies a large proportion of the overall space. In addition, the bogie needs to ensure that the center of rotation is located in the middle to ensure accurate engagement with the drive shaft extending from the motor through the worm gear structure. Therefore, it is impossible to design an overall offset design. The traditional design is to design all synchronous gear sets in a relatively central position to maintain a balanced overall space occupancy. In this way, when viewed from the bottom of the train model, it can be seen that the gear box occupies a larger space in the middle of the axle, resulting in a larger bulge in the middle part of the axle, which is quite different from the bottom structure of a real train. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the problem that the appearance simulation of the existing train model bottom is insufficient because the gear design needs to maintain the balance of the spatial design, the gears on the model axle are offset in combination with the real train bottom structure to achieve the effect of simulating the bottom shape of the real train. In addition, in the prior art, when designing the gear set, it is necessary to consider that the end gear can be coupled to the input gear of the wheel, so there is a certain conflict between the design of the appearance and the transmission.

[0004] The utility model adopts the following technical solutions:

[0005] A wheel-bogie transmission structure of a train model comprises an intermediary gear set and an axle, wherein the axle and an input gear on the axle are mounted in a lower box body of a gearbox, the lower box body is located at the bottom of the bogie and has a raised structure for accommodating the input gear, the raised structure is close to one side of the wheel, the output gear at the end of the intermediary gear set is coaxially connected to a synchronous gear, the synchronous gear is meshed with the input gear on the axle, and the input gear is mounted on the axle and close to one side of the wheel.

[0006] The intermediary gear set is arranged in the center of the bogie. When viewed from the side, the intermediary gear set is arranged in an M shape. The central speed change gear on the top of the intermediary gear set is connected to the motor through a worm drive shaft.

[0007] The intermediate gear set is installed in the upper case of the gearbox, and the intermediate gear set transmits power to the input gear on the axle through multiple gears meshing with each other.

[0008] The transmission is realized by the meshing of the intermediate gear between the synchronous gear and the input gear. The design of the intermediate gear can couple the wheels and the intermediate gear set, reduce the design requirements for the intermediate gear set, and improve the design freedom of the intermediate gear set.

[0009] The utility model has the following beneficial effects:

[0010] 1. Change the input gear on the axle from the middle position to the offset position, so that the lower gearbox can be close to one of the wheels, and the appearance is closer to the bottom shape of a real train.

[0011] 2. The overall layout position of the gear set remains unchanged, and the overall relatively central position is retained. Only a synchronous gear is coaxially installed on the output gear at the end, which has little impact on the balance of the spatial design.

[0012] 3. The design of the intermediate gear can improve the design freedom of the gear set compared to the existing technology, and the end gear of the gear set can be farther away from the input gear on the axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the bottom appearance of the bogie in CN 111408149 A.

[0014] Figure 2 This is a schematic diagram of the arrangement structure of the mediating gear set in CN 111408149 A.

[0015] Figure 3 It is a schematic diagram of the structure of the input gear offset on the axle of the present application.

[0016] Figure 4 It is a schematic diagram of the connection structure between the axle input gear and the intermediate gear set of the present application.

[0017] Figure 5 It is a schematic diagram of the bottom appearance of the bogie of this application.

[0018] Figure 6 This is a perspective view of the gear set. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1: The arrangement structure of the intermediate gear set in this embodiment is the same as that in CN 111408149 A. The specific arrangement can refer to Figure 2 , the difference is that the output gear 3 at the end of the intermediate gear set is coaxially connected to the synchronous gear 2, and the synchronous gear 2 is meshed with the input gear 1 on the axle, such as Figure 3 The input gear 1 on the axle shown is closer to one of the wheels. The intermediate gear set is arranged in the center of the bogie. From the side, the intermediate gear set is arranged in an M shape. The central speed gear on the top of the intermediate gear set is connected through a worm drive shaft, a universal joint and a motor.

[0021] The intermediate gear set is installed in the upper housing of the gearbox, and the input gear 1 on the axle is installed in the lower housing of the gearbox. Since the input gear 1 is offset, the lower housing is also offset, which can be closer to one side of the wheel, see Figure 5 It can be seen that the lower body of the gearbox is close to the right wheel, and its appearance is similar to the gearbox layout structure at the bottom of a real train, making the train model more simulated.

[0022] Embodiment 2: This embodiment redesigns the arrangement structure of the intermediate gear set, and specifically refers to Figure 6 :The overall layout is still similar to M shape. The large gear at the top of the intermediate gear set is connected to the worm drive shaft, universal joint and motor in sequence through the central speed gear. There are three output gears 3 at the lower end of the intermediate gear set. The output gear 3 is coaxially connected to the synchronous gear 2. The synchronous gear 2 is meshed with the intermediate gear 4. The intermediate gear 4 is meshed with the input gear 1 on the axle. The intermediate gear 4 can adjust the transmission ratio of the intermediate gear and the axle.

[0023] The intermediate gear set is installed in the upper housing of the gearbox, and the input gear 1 on the axle is installed in the lower housing of the gearbox. Since the input gear 1 is offset, the lower housing is also offset, which can be closer to one side of the wheel, see Figure 5 It can be seen that the lower body of the gearbox is close to the right wheel, and its appearance is similar to the gearbox layout structure at the bottom of a real train, making the train model more simulated.

Claims

1. A wheel bogie transmission structure of a train model, comprising a guide gear set and an axle, characterized in that: The axle and the input gear on the axle are installed in the lower box body of the gearbox. The lower box body is located at the bottom of the bogie and has a raised structure for accommodating the input gear. The raised structure is close to one side of the wheel. The output gear at the end of the mediating gear set is coaxially connected to the synchronous gear. The synchronous gear drives the input gear on the axle. The input gear is installed on the axle and close to one side of the wheel.

2. The wheel bogie transmission structure of the train model according to claim 1, characterized in that: The intermediary gear set is arranged in the center of the bogie. When viewed from the side, the intermediary gear set is arranged in an M shape. A central speed change gear is provided on the top of the intermediary gear set and is connected to the motor through a worm drive shaft.

3. The wheel bogie transmission structure of the train model according to claim 2, characterized in that: The intermediate gear set is installed in the upper case of the gearbox, and the intermediate gear set transmits power to the input gear on the axle through multiple gears meshing with each other.

4. The wheel bogie transmission structure of the train model according to claim 3, characterized in that: The transmission is achieved between the synchronous gear and the input gear through the meshing of the intermediate gear.

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