A high-speed pantograph bow head structure

Abstract

The present invention discloses a high-speed pantograph bow head structure, including a slide plate structure, a left support, a right support, a left connecting rod, a right connecting rod, a mounting chassis and a buffer assembly; the top of the left support is fixedly connected to the bottom of the slide plate structure, and the bottom of the left support is hinged to the top of the left connecting rod through a hinge; the top of the right support is fixedly connected to the bottom of the slide plate structure, and the bottom of the right support is hinged to the top of the right connecting rod through a hinge; a buffer assembly is provided on the mounting chassis; the bottom of the left connecting rod and the bottom of the right connecting rod are hinged on the buffer assembly. The high-speed pantograph bow head structure of the present invention simplifies the bow head structure, reduces the number of bow head joints and components, and reduces the bow head size, thereby reducing the windward area, wind resistance and aerodynamic noise; the lightweight bow head structure can improve the vibration and impact response of the pantograph bow head caused by the unevenness of the contact network when the pantograph bow head moves at high speed, and reduce the offline risk caused by the slow response of the pantograph bow head.

Description

Technical Field

[0001] The present invention relates to the field of current collecting equipment for high-speed rail vehicles, and more specifically, to a high-speed pantograph head structure. Background Art

[0002] China has a vast territory, a deep inland area, a large population, and an unbalanced distribution of resources and industrial layout. Railway transportation has become a widely used mode of transportation in the domestic comprehensive transportation system due to its own advantages and its important position and role in social development. In the future, the coverage of the railway network will be further expanded, the road network structure will be more optimized, and the backbone role will be more significant. In order to meet the public's diversified needs for transportation methods, speed, convenience and comfort, the transportation field has ushered in extensive and profound changes. Among them, high-speed railway trunk lines have been built on a large scale in recent years and formed a railway trunk network. At the same time, vehicles and equipment are being developed to increase the operating speed of the current high-speed railway from 350km / h to 400km / h. In addition, other modes of transportation such as high-speed maglev transportation are also being explored in depth.

[0003] With the increase in vehicle speed, especially for 400km / h high-speed EMUs, the pantograph head and contact network following performance is very critical, and the weight and shape of the pantograph head components have increasingly higher requirements on aerodynamic performance, noise, etc. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-speed pantograph bow head structure for use in the field of current collection systems of high-speed rail transit EMUs. It has excellent aerodynamic performance, light sprung mass, high fatigue life, good shock absorption and vibration absorption effects, and good weather resistance.

[0005] The technical solution provided by the present invention is as follows:

[0006] A high-speed pantograph bow head structure,

[0007] It includes a slide plate structure, a left support, a right support, a left connecting rod, a right connecting rod, a mounting frame and a buffer assembly;

[0008] The top of the left support is fixedly connected to the bottom of the slide structure, and the bottom of the left support is hinged to the top of the left connecting rod through a hinge;

[0009] The top of the right support is fixedly connected to the bottom of the slide structure, and the bottom of the right support is hinged to the top of the right connecting rod through a hinge;

[0010] The mounting chassis is provided with a buffer assembly;

[0011] The bottom of the left connecting rod and the bottom of the right connecting rod are hinged on the buffer assembly.

[0012] Wherein, a left fixed seat and a right movable seat are provided on the mounting base, the left connecting rod is installed on the left fixed seat through a pin shaft, and the right connecting rod is installed on the right movable seat through a pin shaft.

[0013] Wherein, the right support includes a movable skateboard seat and a short connecting rod, the movable skateboard seat is fixedly installed on the bottom of the skateboard, the top of the short connecting rod is connected to the movable skateboard seat through a hinge, and the bottom of the short connecting rod is connected to the top of the right connecting rod through a hinge.

[0014] Wherein, the bottom of the left connecting rod and the bottom of the right connecting rod are hinged through a pin, and the pin is connected to the buffer assembly.

[0015] Wherein, the left fixed seat is fixedly mounted on the mounting base, and the right movable seat is movably mounted on the mounting base via a pin shaft.

[0016] Wherein, the buffer assembly includes a spring and a tie rod seat, the spring is arranged between the tie rod seat and the mounting base, and the tie rod seat is connected to the pin.

[0017] Wherein, the buffer assembly includes two tie rod seats, which are symmetrically installed at the front and rear ends of the pin, the axis of the tie rod seat is perpendicular to the axis of the pin, and more than four springs are equidistantly arranged at the bottom of the tie rod seat.

[0018] Wherein, it also includes a spring box, which includes an upper cover and a lower cover. The upper cover and the lower cover cooperate to accommodate the buffer assembly and the connecting parts of the left connecting rod and the right connecting rod in the inner cavity of the spring box.

[0019] Wherein, the upper cover is in a smooth streamline shape along the movement direction of the slide plate structure.

[0020] Wherein, the slide plate structure is a single slide plate.

[0021] Wherein, the slide plate structure, left support, left connecting rod, left fixed seat, mounting base, right movable seat, right connecting rod, short connecting rod and movable slide plate seat are all made of aluminum alloy material.

[0022] Compared with the prior art, the present invention provides a high-speed pantograph bow head structure, including a slide plate structure, a left support, a right support, a left connecting rod, a right connecting rod, a mounting base and a buffer assembly; the top of the left support is fixedly connected to the bottom of the slide plate structure, and the bottom of the left support is hinged to the top of the left connecting rod through a hinge; the top of the right support is fixedly connected to the bottom of the slide plate structure, and the bottom of the right support is hinged to the top of the right connecting rod through a hinge; a buffer assembly is provided on the mounting base; the bottom buffer assembly of the left connecting rod and the right connecting rod is hinged to the buffer assembly. Through the optimized design of the structure, a pantograph bow head with a compact and simple structure, light weight on the spring, excellent following performance and low aerodynamic resistance is prepared, which can meet the high aerodynamic requirements and high following requirements of high-speed pantographs.

[0023] The high-speed pantograph bow head structure of the present invention simplifies the bow head structure, reduces the number of bow head joints and components, and reduces the size of the bow head, thereby reducing the windward area, reducing wind resistance and aerodynamic noise; the lightweight bow head structure can improve the vibration and impact response of the pantograph bow head caused by the unevenness of the contact network when the pantograph bow head moves at high speed, and reduce the offline risk caused by the slow response of the pantograph bow head.

[0024] The high-speed pantograph bow head structure of the present invention can not only absorb the vertical vibration and impact of the bow head, but also absorb the vibration impact in the front and back directions. The springs of the buffer assembly are arranged symmetrically in front and back and left and right directions. The springs are pulled by the pull rod seat to achieve the function of shock absorption and vibration absorption of the bow head. When the slide plate structure is subjected to front and back impacts and causes the slide plate structure to tilt in the front and back directions, the springs can absorb the impact and always push the slide plate structure to the center position.

[0025] The high-speed pantograph bow head structure of the present invention is used in the field of current collection system of high-speed EMUs of rail transit, and has excellent aerodynamic performance, light weight on the sprung mass, high fatigue life, good shock absorption effect, good weather resistance, etc. Similarly, the high-speed pantograph bow head structure of the present invention can also be applied to pantographs of medium and low-speed vehicles such as mainline electric locomotives, subways and light rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 only 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.

[0027] Figure 1 It is a schematic diagram of the overall structure of the high-speed pantograph head structure of the present invention;

[0028] Figure 2It is a schematic diagram of the back side of the high-speed pantograph head structure of the present invention;

[0029] Figure 3 A schematic diagram of the present invention after a spring box is added;

[0030] Figure 4 A top view of the high-speed pantograph head structure of the present invention;

[0031] Among them, the skateboard structure 1, the left support 2, the left connecting rod 3, the left fixed seat 4, the mounting base 5, the pull rod seat 6, the spring 7, the right movable seat 8, the right connecting rod 9, the short connecting rod 10, the movable skateboard seat 11, and the spring box 12. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only 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 the field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0036] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0037] The embodiments of the present invention are written in a progressive manner.

[0038] like Figure 1 and Figure 2 As shown, a high-speed pantograph bow head structure,

[0039] It includes a slide plate structure 1, a left support 2, a right support, a left connecting rod 3, a right connecting rod 9, a mounting frame 5 and a buffer assembly;

[0040] The top of the left support 2 is fixedly connected to the bottom of the skateboard structure 1, and the bottom of the left support 2 is hinged to the top of the left connecting rod 3 through a hinge;

[0041] The top of the right support is fixedly connected to the bottom of the skateboard structure 1, and the bottom of the right support is hinged to the top of the right connecting rod 9 through a hinge;

[0042] A buffer assembly is provided on the mounting base 5;

[0043] The bottom of the left connecting rod 3 and the bottom of the right connecting rod 9 are hinged on the buffer assembly.

[0044] The high-speed pantograph bow head structure of the present invention has a left support 2, a right support, a left connecting rod 3, and a right connecting rod 9 provided below the slide plate structure 1, and the bottom buffer components of the left connecting rod 3 and the right connecting rod 9 are hinged on the buffer component. When the high-speed train is running, due to the bumps or wind resistance of the high-speed train, the left connecting rod 3 can adaptively adjust the angle relationship between it and the left support 2, and the right connecting rod 9 can adaptively adjust the angle relationship between it and the right support, so as to keep the slide plate structure 1 in contact with the power grid as much as possible, thereby ensuring the safety of electricity use of the high-speed train.

[0045] The mounting frame 5 of the present invention is provided with a left fixed seat 4 and a right movable seat 8, the left connecting rod 3 is mounted on the left fixed seat 4 through a pin, and the right connecting rod 9 is mounted on the right movable seat 8 through a pin. The middle part of the left connecting rod 3 is mounted on the left fixed seat 4 through a pin, and the bottom of the left connecting rod 3 is hinged on the buffer assembly, and the middle part of the bottom of the right connecting rod 9 is mounted on the right movable seat 8 through a pin, and the bottom of the right connecting rod 9 is also hinged on the buffer assembly. When the slide plate structure 1 is subjected to pressure, the slide plate structure 1 will press the left support 2 and the right support downward, and the tops of the left connecting rod 3 and the right connecting rod 9 sink downward. At this time, the bottoms of the left connecting rod 3 and the right connecting rod 9 are lifted upward, and the buffer assembly is also lifted upward to store potential energy or release potential energy. On the contrary, when the pressure on the skateboard structure 1 is reduced or not under pressure, the left support 2 and the right support are lifted upward, and the tops of the left connecting rod 3 and the right connecting rod 9 are lifted upward. At this time, the bottoms of the left connecting rod 3 and the right connecting rod 9 are pressed downward, and the buffer assembly is also compressed, thereby releasing potential energy or storing potential energy.

[0046] In order to better convert the potential energy of the buffer assembly into the vertical displacement of the skateboard structure 1, the hinge position of the left connecting rod 3 and the left fixed seat 4 and the hinge position of the right connecting rod 9 and the right movable seat 8 can be adjusted according to the needs of the vertical movement stroke of the skateboard. The ratio of the distance between the hinge position of the left connecting rod 3 and the left fixed seat 4 and the bottom of the left connecting rod 3 to the top of the left connecting rod 3 can be 1.5-2.5. Symmetrically, the ratio of the distance between the hinge position of the right connecting rod 9 and the right movable seat 8 and the bottom of the right connecting rod 9 to the top of the right connecting rod 9 can also be 1.5-2.5. Through this lever structure, the downward movement distance of the skateboard structure 1 can be reduced, the compression stroke of the buffer assembly (spring) can be reduced, thereby reducing the height dimension of the buffer assembly, and then reducing the size of the windward surface.

[0047] The right support of the present invention includes a movable slide seat 11 and a short connecting rod 10, wherein the movable slide seat 11 is fixedly mounted on the bottom of the slide, the top of the short connecting rod 10 is connected to the movable slide seat 11 through a hinge, and the bottom of the short connecting rod 10 is connected to the top of the right connecting rod 9 through a hinge. The hinged relationship between the short connecting rod 10 and the right connecting rod 9 can adjust the angle between them according to actual conditions, thereby changing the height of the top of the short connecting rod 10.

[0048] The bottom of the left connecting rod 3 of the present invention is hinged with the bottom of the right connecting rod 9 through a pin, and the pin is connected to the buffer assembly. The lifting or sinking of the buffer assembly can drive the lifting or sinking of the pin, thereby realizing the up and down displacement of the bottom of the left connecting rod 3 and the bottom of the right connecting rod 9.

[0049] The left fixed seat 4 of the present invention is fixedly mounted on the mounting base 5, and the right movable seat 8 is movably mounted on the mounting base 5 via a pin shaft.

[0050] The buffer assembly of the present invention comprises a spring 7 and a rod seat 6, wherein the spring 7 is arranged between the rod seat 6 and the mounting base 5, and the rod seat 6 is connected with the pin. The arrangement of the rod seat 6 can better convert the potential energy of the spring 7 into the movement potential energy of the pin.

[0051] The buffer assembly of the present invention comprises two rod seats 6, which are symmetrically mounted at the front and rear ends of the pin, the axis of the rod seat 6 is perpendicular to the axis of the pin, and more than four springs are equidistantly arranged at the bottom of the rod seat 6. The symmetrical arrangement allows the tension and pressure of the spring 7 to be released more evenly and stably, and the upward and downward movement of the pin is more even and gentle, which is conducive to ensuring the stability of the bow head structure of the high-speed pantograph of the present invention.

[0052] like Figure 3 and Figure 4 As shown, the present invention further comprises a spring box 12, which comprises an upper cover and a lower cover, and the upper cover and the lower cover cooperate to accommodate the buffer assembly and the connection part of the left connecting rod 3 and the right connecting rod 9 in the inner cavity of the spring box 12. One of the uses of the spring box 12 is to protect the buffer assembly, the left connecting rod 3 and the right connecting rod 9, and another function is to reduce the resistance of the bow head structure of the high-speed pantograph during operation.

[0053] In order to further reduce the resistance of the high-speed pantograph bow head structure during operation, the upper cover of the present invention is smoothly streamlined along the movement direction of the slide plate structure, so as to achieve the purpose of reducing the windward area, reducing wind resistance and aerodynamic noise.

[0054] The skateboard structure 1 of the present invention is a single skateboard, which can simplify the bow head structure, reduce the number of bow head joints and components, reduce the size of the bow head, and further achieve the purpose of reducing the windward area, reducing wind resistance and aerodynamic noise.

[0055] The slide plate structure 1, the left support 2, the left connecting rod 3, the left fixed seat 4, the mounting base 5, the right movable seat 8, the right connecting rod 9, the short connecting rod 10 and the movable slide plate seat 11 of the present invention are all made of aluminum alloy materials. The main components of the high-speed pantograph bow head structure are made of aluminum alloy materials. The lightweight pantograph bow head structure can improve the vibration and impact response of the pantograph bow head due to the unevenness of the contact network line when the pantograph bow head moves at high speed, and reduce the offline risk caused by the slow response of the bow head.

[0056] The high-speed pantograph bow head structure of the present invention simplifies the bow head structure, reduces the number of bow head joints and components, and reduces the size of the bow head, thereby reducing the windward area, reducing wind resistance and aerodynamic noise; the lightweight bow head structure can improve the vibration and impact response of the pantograph bow head caused by the unevenness of the contact network when the pantograph bow head moves at high speed, and reduce the offline risk caused by the slow response of the pantograph bow head.

[0057] The bow head structure of the high-speed pantograph of the present invention can not only absorb the vertical vibration and impact of the bow head, but also absorb the vibration impact from the front and back. The springs of the buffer assembly are arranged symmetrically in front, back, left and right directions. The springs are pulled by the pull rod seat to achieve the shock absorption and vibration absorption function of the bow head. When the skateboard structure is impacted from front and back and causes the skateboard structure 1 to tilt from front to back, the springs can absorb the impact and always push the skateboard structure 1 to the center position. The buffer assembly has symmetrically arranged springs in the front and back directions. When it is slightly tilted, the force on the front spring is inconsistent with the force on the rear spring, and the spring on the side with greater force pushes the skateboard structure 1 to the side with less force to ensure that the skateboard structure 1 is in the center position.

[0058] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-speed pantograph head structure, characterized in that: It comprises a slide plate structure (1), a left support (2), a right support, a left connecting rod (3), a right connecting rod (9), a mounting base (5) and a buffer assembly; The top of the left support (2) is fixedly connected to the bottom of the slide structure (1), and the bottom of the left support (2) is hinged to the top of the left connecting rod (3) via a hinge; The top of the right support is fixedly connected to the bottom of the slide plate structure (1), and the bottom of the right support is hinged to the top of the right connecting rod (9) via a hinge; The mounting base (5) is provided with a buffer assembly; The bottom of the left connecting rod (3) and the bottom of the right connecting rod (9) are hinged on the buffer assembly; The right support comprises a movable slide seat (11) and a short connecting rod (10), wherein the movable slide seat (11) is fixedly mounted on the bottom of the slide, the top of the short connecting rod (10) is connected to the movable slide seat (11) via a hinge, and the bottom of the short connecting rod (10) is connected to the top of the right connecting rod (9) via a hinge; The mounting frame (5) is provided with a left fixed seat (4) and a right movable seat (8); the left connecting rod (3) is mounted on the left fixed seat (4) via a pin, and the right connecting rod (9) is mounted on the right movable seat (8) via a pin; The bottom of the left connecting rod (3) is hinged to the bottom of the right connecting rod (9) via a pin, and the pin is connected to the buffer assembly.

2. The high-speed pantograph head structure according to claim 1, characterized in that: The left fixed seat (4) is fixedly mounted on the mounting base (5), and the right movable seat (8) is movably mounted on the mounting base (5) via a pin shaft.

3. The high-speed pantograph head structure according to claim 2, characterized in that: The buffer assembly comprises a spring (7) and a pull rod seat (6); the spring (7) is provided between the pull rod seat (6) and the mounting base (5); and the pull rod seat (6) is connected to the pin.

4. The high-speed pantograph head structure according to claim 3, characterized in that: The buffer assembly comprises two tie rod seats (6), the tie rod seats (6) are symmetrically mounted at the front and rear ends of the pin, the axis of the tie rod seat (6) is perpendicular to the axis of the pin, and more than four springs are equidistantly arranged at the bottom of the tie rod seat (6).

5. The high-speed pantograph head structure according to claim 4, characterized in that: It also comprises a spring box (12), the spring box (12) comprising an upper cover and a lower cover, the upper cover and the lower cover cooperate to accommodate the buffer assembly and the connection part of the left connecting rod (3) and the right connecting rod (9) in the inner cavity of the spring box (12).

6. The high-speed pantograph head structure according to claim 5, characterized in that: The upper cover is in a smooth streamline shape along the movement direction of the slide plate structure.

7. The high-speed pantograph head structure according to any one of claims 1 to 6, characterized in that: The slide plate structure (1) is a single slide plate.

8. The high-speed pantograph head structure according to any one of claims 1 to 6, characterized in that: The slide plate structure (1), the left support (2), the left connecting rod (3), the left fixed seat (4), the mounting base (5), the right movable seat (8), the right connecting rod (9), the short connecting rod (10) and the movable slide plate seat (11) are all made of aluminum alloy material.

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