Electric control lifting mechanism of model pantograph

Abstract

The invention discloses an electric control lifting mechanism of a model pantograph, and effectively solves the problem that an electric control lifting pantograph device of an existing electric locomotive model is poor in appearance simulation degree. Comprising a model pantograph module and an electric control driving module. The model pantograph module comprises a sliding plate model and two four-bar mechanisms which are connected in series, and the sliding plate model can ascend or descend under the control of the electric control driving module; the electric control driving module is arranged at the lower part of the model pantograph module; the electric control driving module drives the sliding plate model to lift by stretching and releasing a rope penetrating through a central hole of a circuit breaker insulator mimic pull rope sleeve; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Technical Field

[0001] This invention relates to the field of train model technology, and in particular to an electrically controlled lifting mechanism for a model pantograph. Background Technology

[0002] Dynamic railway locomotive and rolling stock models not only require external simulation of the prototype locomotives and rolling stock, but also functional simulation, drawing power from the energized rails to achieve propulsion, lighting, and other functions. Electric locomotives, trams, and electric multiple units (EMUs), as important categories of modern railway locomotives and rolling stock, are also the subjects of model reproduction. Installing a user-controllable, retractable pantograph on the dynamic model can greatly enhance its dynamic simulation characteristics, significantly increase its aesthetic appeal, and improve its product value.

[0003] In the real world, pneumatic-spring assemblies are typically used to control the raising and lowering of pantographs on railway locomotives and rolling stock. However, this method cannot currently be replicated on models, requiring more sophisticated alternatives. Specifically, 1 / 87 and 1 / 160 scale models are the dominant sizes in the current dynamic railway locomotive and rolling stock model market. At these scales, the width of the model car is typically between 1.1cm and 3.7cm, making it impossible to accommodate the pneumatic mechanisms that mimic real vehicles. Furthermore, the input voltage of the track system for these scale models is generally less than 15V. Combined with space constraints, it's impossible to apply numerous high-voltage and electromagnetic actuators on the model using voltage and current conversion methods, making controlled pantograph raising and lowering difficult. Additionally, modern pantographs, as prototypes in models, typically do not directly contact the roof below but are connected to the car body via several high-voltage insulating components. To recreate this structure on small-scale models like 1 / 87 and 1 / 160, the pantograph raising mechanism cannot directly contact the pantograph's connecting rods through exposed mechanisms such as through-type levers or gears, further complicating the process.

[0004] To realize the electrically controlled lifting pantograph function of the electric locomotive model, a drive mechanism first needs to be installed inside the model car body. Then, a transmission mechanism without obvious external transmission devices (such as gears, levers, cams, etc.) needs to be installed between the drive mechanism and the pantograph to drive the pantograph to lift and lower. Furthermore, due to the application scenario of the rail locomotive model, this mechanism should also meet the following conditions as much as possible: Adaptability of the lifting height of the pantograph model: The pantograph model's sliding plate model part of the electric lifting device should be able to rebound when subjected to external impact, which can prevent the electric lifting mechanism from being overloaded and damaged when the pantograph is obstructed by foreign objects or external forces during the lifting process. At the same time, it should have the function of adapting to the contact wire of the model at different heights.

[0005] Concealment of the actuation device: The drive module of the electric lifting device of the pantograph of the model should be able to be hidden inside the car body of the train model, and the transmission mechanism of the pantograph outside the car body shell should not rely on rigid parts that penetrate the shell to avoid adding mechanisms or parts to the model that do not exist in the prototype vehicle.

[0006] Compact and flexible power mechanism: The drive unit of the electric lifting device of the pantograph on the model should be compact in size so that it can be fitted on popular small-scale models. If its compatibility cannot meet the needs of several mainstream scale models (1:87, 1:64, 1:72, etc.), such a power mechanism will be worthless. Moreover, the mechanism can be flexibly expanded. Ideally, the power mechanism can be arranged separately from the pantograph model body. This way, a suitable internal installation location can be found as easily as possible according to the different configurations of various electric locomotives, electric multiple units, trams, urban rail vehicles, and other real-world rail vehicles that require pantograph power supply. This reduces the difficulty of developing train model products and expands the application scope beyond just one or a few model types.

[0007] It must be easy to process and have high motion reliability: all parts of this device can be manufactured using ordinary injection molding and ordinary hardware processing technology that does not require ultra-high precision, and the entire motion mechanism can be controlled using ordinary low-voltage signals and small motors, and can be installed inside train models of various models and scales; the motion mechanism has a long service life and is suitable for installation on precision dynamic rail locomotive and vehicle models as general consumer products.

[0008] Therefore, designing a reasonable structure for the electronically controlled lifting device of the pantograph in the model, making it as perfect as possible in terms of the aforementioned characteristics, and enabling it to adapt to the simulation of the dynamic lifting action of the pantograph in all mainstream model scales, is quite challenging. Summary of the Invention

[0009] In view of the above situation and in order to overcome the shortcomings of the prior art, the purpose of this invention is to provide an electrically controlled lifting mechanism for a model pantograph, which solves the problems that the existing pantograph simulation components of locomotive models cannot achieve both appearance and dynamic simulation, and that the action mechanism has poor reliability, high requirements for placement, and poor versatility.

[0010] To achieve the above objectives, the present invention provides an electrically controlled lifting mechanism for a model pantograph, comprising: (1) The pantograph module of the model has two four-bar linkages connected in series, which can make the skateboard model move up or down under the control of the electric drive module; (2) The electric control drive module is located at the lower part of the pantograph and includes an upper housing. The lower end of the upper housing is rotatably connected to a rope tension control arm via a protruding rotating shaft. The lower end of the upper housing is provided with a rotatable cam located in front of the rope tension control arm. A rope is provided below the cam. One end of the rope is a fixed end, which is fixedly connected to the rope tension control arm, and the other end is a movable end, which is connected to the pantograph module of the model for transmission. (3) A circuit breaker insulator mimicking a pull rope sleeve is installed between the model pantograph module and the electric control drive module. The free end of the rope passes through the cam and then through the center hole of the circuit breaker insulator mimicking a pull rope sleeve to connect with the model pantograph module.

[0011] As a preferred embodiment, the electronically controlled drive module further includes a drive motor, a bearing, a lower housing, an outer conductive spring, and an inner conductive spring. The drive motor is fixedly disposed between the upper housing and the lower housing. The cam is mounted on the output shaft of the drive motor and rotates together with the output shaft. The bearing is rotatably connected to the output shaft of the drive motor and is fixedly connected to the upper housing and the lower housing.

[0012] As a preferred embodiment, the end of the rope tension control arm away from the protruding pivot is provided with a rope tension control arm spring in the front-to-back direction, and the other end of the rope tension control arm spring is fixedly connected to the upper housing.

[0013] As a preferred embodiment, the rope tension control arm is provided with a rope fixing screw hole and a rope positioning groove in the middle. The rope fixing end is pressed and fixed to the rope tension control arm by the rope fixing screw, and then inserted into the rope positioning groove of the rope tension control arm and wound around once. One end of the outer conductive spring and the inner conductive spring are fixedly set on the lower housing, and a certain gap is left between the outer conductive spring and the inner conductive spring. The length of the rope can be flexibly determined according to the state of the adaptable model.

[0014] As a preferred embodiment, when the pantograph module of the drive model is lifting and lowering, the output shaft of the drive motor and the rotation direction of the cam do not change. During the rotation of the cam, the rope is periodically stretched and released by the cam.

[0015] As a preferred embodiment, during the upward motion of the pantograph module's sliding plate model, the linear velocity direction of the area where the cam rotates and contacts the rope is opposite to the direction of the rope's movement, ensuring that the cam and the rope are always in relative motion within the contact area, and that the friction between the rope and the cam is always sliding friction.

[0016] As a preferred embodiment, the cam retainer plate has two protruding points. When rotated to a set position, the protruding points will press the inner conductive spring to bend outward until it contacts the outer conductive spring to conduct electricity, thus serving as a sensor for detecting the cam stroke.

[0017] As a preferred embodiment, the moving end of the rope is connected to one of the four-bar linkages of the pantograph module of the model. The rope moves under the drive of the electronically controlled drive module, thereby causing the two series-connected four-bar linkages of the pantograph module to deform, so that the skateboard model can rise or fall smoothly.

[0018] As a preferred embodiment, the circuit breaker insulator mimicking a pull rope sleeve is a part with a central through hole, which simultaneously serves as an aesthetic decoration, supports and fixes the pantograph module of the model, and acts as a channel structure for the rope to pass from inside the vehicle body to the outside of the roof.

[0019] Another object of the present invention is to provide an application of an electrically controlled lifting mechanism for a model pantograph, wherein the electrically controlled drive module is installed inside the shell of the electric locomotive model, and the model pantograph module is located above the roof of the vehicle. The rope passes through the electrically controlled drive module located inside the vehicle body, through a circuit breaker insulator-mimicking pull rope sleeve, and then exits to the outside of the roof.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. Enhanced Appearance Simulation: The motion mechanism of this invention is completely hidden within the original outline of the model. By setting a circuit breaker insulator-like rope sleeve, it not only serves as a channel structure for the rope to pass from inside the car body to the outside of the roof, but also has an appearance decoration function and supports and fixes the pantograph module. This makes the overall structure more closely resemble the insulator structure connecting the pantograph and the car body of a real electric locomotive while realizing the transmission function. This avoids the destruction of the overall simulation effect of the model by the traditional exposed transmission mechanism. The pantograph component of the model can fully restore the appearance of the pantograph of the real world prototype in static appearance, while dynamically simulating the raising and lowering action of the pantograph. 2. Improved dynamic simulation: During the raising and lowering of the pantograph, the direction of motor rotation does not change, ensuring smooth and stable operation of the pantograph during the raising and lowering process. There are no sudden interruptions or accelerations. The combination of cam and cable ensures smooth changes in motion vector, continuous motion, and simulated and aesthetically pleasing motion posture. 3. High reliability: This invention can adapt to the height of the contact wire and prevent foreign objects from obstructing the pantograph. The pantograph device will not be damaged due to the high rigidity of the contact wire used in the model. In addition, the components on which the internal action mechanism depends can achieve a long working life while using commonly used materials in light industry. This is conducive to improving functionality while reducing after-sales costs of the model and further enhancing market competitiveness. 4. Simplified mechanism and reduced cost: The whole adopts a very easy-to-implement processing technology. It can use common and readily available mechanisms in the light industrial supply chain, such as injection-molded gears and simple lathe parts, to achieve the action, reducing the processing requirements and reducing costs, which is conducive to large-scale industrial production; The device adopts a modular design, which is easy to apply in a small model space and is suitable for manual and semi-automatic assembly. Problems can be solved by using screw connections and ultrasonic welding of sub-components. 5. Small size, flexible layout, suitable for various electric locomotive models: Because the rope length is variable and it has a tensioning device, each sub-component can be arranged in a modular fashion, which is suitable for various models with different appearances; it can be combined with the same set of molds, motor components, drive units, etc., which improves the versatility of the design. Attached Figure Description

[0021] Figure 1 This is the front view axonometric drawing of the present invention.

[0022] Figure 2 This is the front view axonometric drawing of the present invention.

[0023] Figure 3 This is the bottom-view axonometric drawing of the present invention.

[0024] Figure 4 This is an isometric view of the present invention after the upper shell has been removed.

[0025] Figure 5 This is a simplified diagram of the motion structure of the present invention.

[0026] Figure 6 This is a simplified diagram of the motion structure of the present invention.

[0027] Figure 7 This is the right-side axonometric view of the present invention.

[0028] Figure 8 This is an isometric view of the invention after it has been unfolded.

[0029] Figure 9 This is an isometric view of the circuit breaker insulator mimicking the pull rope sleeve of the present invention.

[0030] Figure 10 This is an exploded view of the structure of the present invention.

[0031] Figure 11 This is a simplified diagram of the motion structure of the present invention.

[0032] Figure 12 This is a simplified diagram of the motion structure of the present invention. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the basic embodiments disclosed below.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Depend on Figures 1 to 12 The pantograph consists of two parts: a pantograph and an electric control drive module. The pantograph is mounted on top of the electric control drive module. The electric control drive module drives the sliding plate 1 to move up and down by stretching and releasing a rope that passes through the central hole of the circuit breaker insulator mimicking a pull rope sleeve 10. The pantograph is composed of a sliding plate 1, an upper frame 2, a lower boom 3, a lower pull rod 4, an upper pull rod 6, a pantograph lowering return spring 8, a pantograph base frame 9, and a circuit breaker insulator mimicking a pull rope sleeve 10. One end of the lower boom 3 is hinged to the middle of the upper frame 2 by a lower boom pivot pin 5, and the end of the lower boom 3 away from the upper frame 2 is hinged to the lower frame 9 by a lower boom pivot pin 7. The bottom of the sliding plate 1 is provided with two symmetrically arranged pivot seats, one of which... The shorter pivot seat has a pivot hole that is hinged to the upper frame 2, and the longer pivot seat has two through holes arranged vertically. The upper one is the pivot hole that is hinged to the upper frame 2. The end of the upper frame 2 away from the lower arm 3 is hinged to the slide plate 1. One end of the upper pull rod 6 is hinged to the lower through hole on the longer pivot seat of the slide plate 1, and the other end is hinged to the middle of the lower arm 3. One end of the lower pull rod 4 is hinged to the end of the upper frame away from the slide plate 1, and the other end of the lower pull rod 4 is hinged to the end of the pantograph base frame near the circuit breaker insulator mimicking the pull rope sleeve 10. One end of the pantograph lowering return spring 8 is fixed to the extension arm on the lower arm 3 near the hinged pivot end of the pantograph base frame 9, and the other end is fixed to the pantograph base frame 9. The electrically controlled drive module comprises a rope tension control arm 11, an upper housing 12, a rope tension control arm spring 14, a drive motor 17, a cam 18, a bearing 19, a rope 20, a lower housing 21, an outer conductive spring 22, and an inner conductive spring 23. The drive motor 17 is fixedly disposed between the upper housing 12 and the lower housing 21. The cam 18 is mounted on the output shaft of the drive motor 17 and rotates together with the output shaft. The bearing 19 is sleeved on the output shaft of the drive motor 17, and the outer ring of the bearing 19 is fixed between the upper housing 12 and the lower housing 21. One end of the rope tension control arm spring 14 is fixed to one end of the rope tension control arm 11 away from the protruding rotating shaft at the lower part of the upper housing 12. The other end of the rope tension control arm spring 14 is fixed to the upper housing 12; the middle part of the rope tension control arm 11 is provided with a rope head fixing screw hole and a rope positioning groove. The head of the rope 20 is pressed and fixed to the rope tension control arm 11 by the rope head fixing screw 16, then inserted into the rope positioning groove of the rope tension control arm 11 and wound around once, passing through the cam 18, and then passing through the center hole of the circuit breaker insulator mimicking pull rope sleeve 10, and finally fixed on the extension arm of the lower arm 3 near the hinge shaft of the pantograph base 9; one end of the outer conductive spring 22 and the inner conductive spring 23 are fixedly set on the lower housing 21, and a certain gap is left between the outer conductive spring 22 and the inner conductive spring 23.

[0037] Preferably, when the electric control drive module drives the pantograph slide 1 to move up or down, the output shaft of the drive motor 17 and the rotation direction of the cam 18 do not change. During the rotation of the cam 18, the rope 20 is periodically stretched and released, driving the lower arm 3 to periodically swing around the pivot hinged to the lower arm 3 and the pantograph base 9.

[0038] Preferably, the slide plate 1, upper frame 2, lower arm 3, lower lever 4, upper lever 6 and pantograph base 9 constitute two series four-bar linkages, so that the slide plate 1 can perform lifting and lowering actions when the lower arm 3 rotates around the hinge axis between the lower arm 3 and the pantograph base 9.

[0039] Preferably, during the upward movement of the slide plate 1, the linear velocity direction of the area in contact with the rope 20 when the cam 18 rotates is opposite to the direction of movement of the rope 20, ensuring that the cam 18 and the rope 20 are always in relative motion within the area of ​​contact, and the friction between the rope 20 and the cam 18 is always sliding friction.

[0040] Preferably, the cam 18 has two protruding points distributed on its retaining edge circular plate. When rotated to a set position, the protruding points will press the inner conductive spring 23 to bend outward until it contacts the outer conductive spring 22 to conduct electricity, serving as a sensor for detecting the cam stroke.

[0041] Preferably, the tail end of the rope 20 is fixed to the extension arm on the lower arm 3 near the hinge shaft of the pantograph base 9 by means of hot pressing, ultrasonic welding, laser welding, brazing, knotting or adhesive bonding.

[0042] Preferably, one end of the rope tension control arm 11 is provided with a pivot hole, and is assembled on the protruding pivot provided on the lower part of the upper housing 12 by means of a washer 13 and a rope tension control arm fixing screw 15. The rope tension control arm 11 can rotate around the protruding pivot on the lower part of the upper housing 12 in a direction parallel to the top surface of the upper housing 12.

[0043] Preferably, after the slide plate 1 is raised, the slide plate is not rigidly connected to the upper shell 12 in the vertical direction, and has a certain elastic stroke, which can adapt to the height of the contact wire.

[0044] Preferably, the electric control drive module is installed inside the shell of the electric locomotive model, while the pantograph is located above the roof. The rope 20 passes through the electric control drive module located inside the vehicle body, through the circuit breaker insulator mimicking the rope sleeve 10, and then exits to the outside of the roof.

[0045] Preferably, the circuit breaker insulator mimicking the pull rope sleeve 10 is a part with a central through hole, which also serves as an appearance decoration, supports and fixes the pantograph base 9, and is a channel structure for the rope 20 to pass from inside the vehicle body to the outside of the roof.

[0046] Example 1: The pantograph consists of a sliding plate 1, an upper frame 2, a lower boom 3, a lower pull rod 4, an upper pull rod 6, a pantograph lowering return spring 8, a pantograph base frame 9, and a circuit breaker insulator mimicking a pull rope sleeve 10; one end of the lower boom 3 is hinged to the middle of the upper frame 2 via a lower boom pivot pin 5, and the end of the lower boom 3 away from the upper frame 2 is hinged to the lower frame 9 via a lower boom pivot pin 7; the bottom of the sliding plate 1 is provided with two symmetrically arranged pivot seats, one of which is shorter. The rotating shaft seat has a shaft hole that is hinged to the upper frame 2. Another, longer rotating shaft seat has two vertically arranged through holes; the upper one is the shaft hole that is hinged to the upper frame 2. The end of the upper frame 2 furthest from the lower arm 3 is hinged to the slide plate 1. One end of the upper pull rod 6 is hinged to the lower through hole on the longer rotating shaft seat of the slide plate 1, and the other end is hinged to the middle of the lower arm 3. One end of the lower pull rod 4 is hinged to the end of the upper frame furthest from the slide plate 1, and the other end of the lower pull rod 4... One end is hinged to the end of the pantograph base frame near the circuit breaker insulator-mimicking pull rope sleeve 10; one end of the pantograph lowering return spring 8 is fixed to the extension arm of the lower arm 3 near the hinged pivot of the pantograph base frame 9, and the other end is fixed to the pantograph base frame 9. The rope 20 is finally fixed to the extension arm of the lower arm 3 near the hinged pivot of the pantograph base frame 9. During the rotation of the cam 18, the rope 20 is periodically stretched and released, driving the lower arm 3 to rotate around the lower arm. The hinge of the 3 and the pantograph base 9 swings periodically. At the same time, after the slide plate 1 is raised, the slide plate is not rigidly connected to the upper shell 12 in the vertical direction and has a certain elastic stroke, which can adapt to the height of the contact wire. The slide plate 1, the upper frame 2, the lower arm 3, the lower pull rod 4, the upper pull rod 6 and the pantograph base 9 constitute two series four-bar linkages, so that the slide plate 1 can perform lifting and lowering actions when the lower arm 3 rotates around the hinge axis between the lower arm 3 and the pantograph base 9.

[0047] Example 2: In use, when the drive motor 17 is energized, it drives the cam 18 to rotate. The position of the far end of the eccentric surface of the cam 18 changes periodically. This causes the geometric path length from the end of the rope 20 fixed on the rope tension control arm 11 to the lower end of the center hole of the circuit breaker insulator mimicking the rope sleeve 10 to change periodically. As the geometric path length increases with the rotation of the cam 18, the rope 20 is stretched, and the length of the section from the end of the rope tension control arm 11 to the lower end of the center hole of the circuit breaker insulator mimicking the rope sleeve 10 increases. Since the total length of rope 20 is fixed, the length of the section from the upper end of the center hole of the circuit breaker insulator mimicking the rope sleeve 10 to the extension arm on the lower arm 3 near the hinge shaft of the pantograph base 9 is reduced. The extension arm on the lower arm 3 near the hinge shaft of the pantograph base 9 rotates under the tension of rope 20, causing the lower arm 3 to stand upright. This drives two series four-bar linkages consisting of slide plate 1, upper frame 2, lower arm 3, lower pull rod 4, upper pull rod 6, and pantograph base 9, causing slide plate 1 to rise. When the geometric path length from the end of the rope 20 fixed on the rope tension control arm 11 to the lower end of the center hole of the circuit breaker insulator mimicking the rope sleeve 10 decreases as the cam 18 rotates, the tension of the rope 20 acting on the extension arm of the lower arm 3 near the hinge shaft of the pantograph base 9 decreases. The lower arm 3 collapses under the combined force of gravity, the elasticity of the pantograph return spring 8, and the tension of the rope 20, thereby driving the slide plate 1 to descend. The principle of the adaptive contact wire height of the present invention is that the head end of the rope 20 is fixed to one end of the rope tension control arm 11. The rope tension control arm 11 can rotate around the protruding shaft at the lower part of the upper housing 12 under the action of the rope tension control arm spring 14. This is equivalent to the rope 20 being connected in series with a buffer mechanism, so that the rope 20 can move radially under the action of tension. Therefore, when the slide plate 1 is raised, the slide plate is not rigidly connected to the upper housing 12 in the vertical direction and has a certain elastic stroke.

[0048] Example 3: The difference from Example 1 is that a fixed pulley 181 is installed directly below the circuit breaker insulator mimicking the pull rope sleeve 10. The rope 20 passes through the central through-hole of the circuit breaker insulator mimicking the pull rope sleeve 10 from the roof, goes under the roof, around the fixed pulley 181, and then passes through the cam 18. The end of the rope 20 is then fixed to the rope tension control arm 11. Because the fixed pulley 181 changes the direction of force transmission of the rope 20, the electric control drive module does not need to be located directly below the pantograph, but can be located in a position away from the pantograph, making the layout of the electric control drive module more flexible. The beneficial effect of this example is that the electric control lifting device of the pantograph model can be applied to different models of electric locomotives. For example, in some industrial and mining electric locomotive models, the area directly below the pantograph is the cab, with transparent windows and other interior trim. In this case, the electric control drive module cannot be located directly below the pantograph, but is offset along the front-rear direction of the vehicle body, placing the electric control drive module in a position that is not visible from the outside.

[0049] Compared with the prior art, the beneficial effects of the present invention are: 1. Improved appearance simulation: The action mechanism of the present invention is completely hidden within the original appearance outline of the model. By setting a circuit breaker insulator-like rope sleeve, it not only serves as a channel structure for the rope to pass from the inside of the car body to the outside of the roof, but also has the functions of appearance decoration and supporting and fixing the pantograph module. This makes the overall structure more closely resemble the insulator structure of the pantograph and the car body of a real electric locomotive while realizing the transmission function. It avoids the destruction of the overall simulation effect of the model by the traditional exposed transmission mechanism, making the model more realistic and visually appealing. 2. Enhanced Dynamic Simulation: During the raising and lowering of the pantograph, the motor's rotation direction remains unchanged, ensuring smooth and stable pantograph operation without sudden interruptions or accelerations. The cam and cable combination ensures smooth changes in the motion vector. 3. High Reliability: This invention adapts to the contact wire height and prevents obstruction of the pantograph by foreign objects. The pantograph device is not damaged by the use of high-rigidity materials in the contact wire model, and the operation is continuous. 4. Simplified Mechanism and Reduced Costs: The entire design utilizes easily implemented processing techniques, employing readily available and common components from the light industrial supply chain, such as injection-molded gears and simple lathe parts, to achieve the desired motion, thus reducing costs. The low processing requirements reduce costs and facilitate large-scale industrial production. The modular design of the device makes it easy to apply in small model spaces, adaptable to manual and semi-automatic assembly, and can be solved by screw connections and ultrasonic welding of sub-components. 5. Its small size and flexible layout make it suitable for various electric locomotive models. Because the rope length is variable and it has a tensioning device, each sub-component can be modularly arranged, which is suitable for various models with different appearances. It can also use the same action units, that is, use common molds, motor components, drive units, etc., which improves the applicability of the design. This structure is simple, novel in concept, easy to use, and highly usable.

[0050] It should be noted that, depending on the implementation needs, the various components described in the embodiments of the present invention can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present invention.

[0051] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An electric control lifting mechanism of a model pantograph, comprising: (1) a model pantograph module, comprising a pantograph model and two series-connected four-bar mechanisms, capable of making the pantograph model move up or down under the control of an electric control driving module; (2) the electric control driving module, arranged at the lower part of the model pantograph module, comprising an upper shell (12), the lower end of the upper shell (12) is rotatably connected with a rope tension control arm (11) through a protruding rotating shaft, the lower end of the upper shell (12) is provided with a rotatable cam (18) located in front of the rope tension control arm (11); a rope (20) is arranged below the cam (18), one end of the rope (20) is a fixed end and is fixedly connected with the rope tension control arm (11), the other end is a moving end and is drivingly connected with the pantograph module; (3) a circuit breaker insulator mimic type rope sleeve (10) arranged between the model pantograph module and the electric control driving module, the free end of the rope (20) passes through the center hole of the circuit breaker insulator mimic type rope sleeve (10) after the cam (18) and is connected with the model pantograph module.

2. The electrically controlled lifting mechanism of a model pantograph according to claim 1, characterized in that, The electric control driving module further comprises a driving motor (17), a bearing (19), a lower shell (21), an outer conductive spring (22) and an inner conductive spring (23), the driving motor (17) is fixedly arranged between the upper shell (12) and the lower shell (21), the cam (18) is assembled on the output shaft of the driving motor (17) and rotates together with the output shaft, the bearing (19) is rotatably connected with the output shaft of the driving motor (17), and the bearing (19) is fixedly connected with the upper shell (12) and the lower shell (21).

3. The electrically controlled lifting mechanism of a model pantograph according to claim 1, characterized in that, The end of the rope tension control arm (11) away from the protruding rotating shaft is provided with a rope tension control arm spring (14) in the front-rear direction, the other end of the rope tension control arm spring (14) is fixedly connected with the upper shell (12).

4. The electrically controlled pantograph lifting mechanism according to claim 1, wherein The middle part of the rope tension control arm (11) is provided with a rope fixing screw hole and a rope positioning groove, the fixed end of the rope (20) is tightly fixed on the rope tension control arm (11) through a rope fixing screw (16), then is clamped into the rope positioning groove of the rope tension control arm (11) and is wound one turn, one end of the outer conductive spring (22) and the inner conductive spring (23) is fixedly arranged on the lower shell (21), and a certain gap is left between the outer conductive spring (22) and the inner conductive spring (23); the length of the rope (20) can be flexibly determined according to the state of the model.

5. The electrically controlled pantograph lifting mechanism according to claim 1, wherein When the electric control driving module drives the pantograph module to move up and down, the rotating direction of the output shaft of the driving motor (17) and the cam (18) does not change, and the rope (20) is periodically stretched and released by the cam (18) during the rotation of the cam (18).

6. The electrically controlled pantograph lifting mechanism according to claim 1, wherein The linear velocity direction of the contact area between the cam (18) and the rope (20) is opposite to the movement direction of the rope (20) during the process of the pantograph module's slide plate model rising, which ensures that the cam (18) and the rope (20) are always in relative motion in the contact area, and the friction between the rope (20) and the cam (18) is always sliding friction.

7. The electrically controlled pantograph lifting mechanism of claim 1, wherein, The cam (18) has two protruding points on the blocking edge circular plate, which will press the inner conductive elastic sheet (23) to bend outward until contacting the outer conductive elastic sheet (22) for conducting electricity when rotating to the set position, and the protruding points are used as sensors for detecting the stroke of the cam (18).

8. The electrically controlled pantograph lifting mechanism according to claim 1, wherein, The moving end of the rope (20) is connected with one of the four-bar mechanisms of the pantograph module, and the rope (20) is driven to move by the electric control driving module, thereby deforming the two series-connected four-bar mechanisms of the pantograph module to make the slide plate model rise or fall smoothly.

9. The electrically controlled pantograph lifting mechanism of claim 1, wherein, The circuit breaker insulator mimic rope sleeve (10) is a part with a through hole in the center, which has the functions of appearance decoration, supporting and fixing the pantograph module, and providing a passage for the rope (20) to pass from the inside of the car body to the outside of the roof.

10. Use of an electrically controlled lifting mechanism of a model pantograph, characterized in that, The electric control driving module is installed in the car body of the electric locomotive model, and the pantograph module is located above the roof, and the rope (20) passes through the circuit breaker insulator mimic rope sleeve (10) from the electric control driving module located in the car body to the outside of the roof.

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