CN102085810A - High-speed pantograph head - Google Patents

Abstract

The invention discloses a high-speed pantograph head, comprising a sliding plate, small bow angles, large bow angles and a frame-shaped spring, wherein the section of the sliding plate is in a stream line form, the lower part of the sliding plate is an elongated sliding plate slot, the slot is embedded with carbon slide blocks or other materials, the frame-shaped spring is connected below the sliding plate by virtue of a bracket, the front end of the frame-shaped spring is connected with the sliding plate by virtue of a support and the bracket, the rear end of the frame-shaped spring is hinged with the upper frame of a pantograph, and a group of large bow angles are inserted and fixed in a hinge at the upper end of the upper frame of the pantograph. Under the coordination of a pantograph balanced beam, the frame-shaped spring can always maintain the sliding plate of the pantograph to be parallel to a guide rail plane, and the sliding plate can be always in close contact with a contact wire under the regulating action of the bracket. The structure of the pantograph head is simple, the weight is light, the air resistance when the pantograph head moves, the impact resistance is high, the current of the pantograph at a high speed is favourable, the current of the pantograph of a train on a conventional railway or a light railway can be improved.

Description

A high-speed pantograph head

technical field

The invention relates to a pantograph bow head, in particular to a high-speed pantograph bow head.

Background technique

On vehicles such as electric locomotives, EMUs or electric operating vehicles in electrified railways and urban rail transit, pantographs are required to take current from the catenary. The electrified railway adopts electric traction. When the train is in motion, it uses the pantograph to obtain electric energy from the catenary. In order to ensure the smooth and safe operation of the train, it is necessary to ensure that the power supply is absolutely reliable and uninterrupted, that is, the current receiving state of the pantograph is good. Otherwise it will affect the operation of the train and the performance of the electric drive system. In the high-speed running state, the requirements for the pantograph are higher.

In order to ensure good current receiving characteristics of the pantograph-catenary, the structure of the pantograph head is very critical. The bow head structure of the existing pantograph is as follows: there are two spring supports at both ends of the slide plate, these spring supports are usually composed of coil springs, steel wire supports or spring boxes, and some use torsion springs to form the supports. These spring brackets have complex structures and heavy weight, which adversely affect the followability of the pantograph. Some also design leaf springs as the bow support, but it is also slightly larger in size. It is not conducive to dynamic flow under high-speed conditions.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-speed pantograph head with simple structure, light weight and good aerodynamic characteristics.

In order to solve the above technical problems, the high-speed pantograph head provided by the present invention includes a slide plate and a first large bow angle, the bottom of the slide plate is connected to the front ends of two frame springs, and the two frame springs The rear ends of each are fixed on the hinges of the double-bar upper frame, and the two ends of the skateboard are provided with small bow angles, and the first large bow angle is fixed on the hinge of the double-bar upper frame. middle.

The shape of the cross-section of the slide plate is streamlined, and the lower part of the slide plate is a long strip-shaped slide plate groove, and a carbon slider or powder metallurgy slide block is embedded in the slide plate groove, and the slide plate groove is used for The screw is connected with the bracket, the bracket is connected with the support by pins, and the front end of the frame spring is fixedly connected with the support.

The streamline shape of the cross-section of the skateboard is: the upper and lower sides are straight lines, and the left and right ends are elliptical or circular.

A high-speed pantograph head, comprising a slide plate, the middle bottom of the slide plate is connected to the front end of a frame-shaped spring, and the rear end of the frame-shaped spring is fixedly connected to the hinge of the single-rod upper frame. Both ends of the skateboard described above are provided with the second largest bow angle.

The shape of the cross-section of the slide plate is streamlined, and the lower part of the slide plate is a long strip-shaped slide plate groove, and a carbon slider or powder metallurgy slide block is embedded in the slide plate groove, and the slide plate groove is used for The screw is connected with the bracket, the bracket is connected with the support by pins, and the front end of the frame spring is fixedly connected with the support.

The streamline shape of the cross-section of the skateboard is: the upper and lower sides are straight lines, and the left and right ends are elliptical or circular.

In the high-speed pantograph head adopting the above-mentioned technical scheme, the section shape of the slide plate is streamlined, and the lower part of the slide plate is a long slide plate groove, and a slide block is embedded in the slide plate groove, and the slide block can be a carbon slide block, It can also be made of other materials, such as a powder metallurgy slider. The lower part of the slider is connected to the front end of the frame spring through a bracket, and the rear end of the frame spring is connected to the upper frame. If the upper frame of the pantograph is composed of two rods, It is necessary to use 2 frame springs to establish a connection between the upper frame and the skateboard. Small bow angles are used at both ends of the skateboard. If the upper frame of the pantograph is a single rod, the large bow angle at the upper end of the upper frame should be canceled. Small bow angle changed to large bow angle. With the cooperation of the pantograph balance bar, the frame spring can always keep the pantograph slide plate parallel to the track plane, and with the adjustment function of the bracket, the slide plate can always be in close contact with the contact wire.

Compared with prior art, the beneficial effect of the present invention is:

1. The skateboard is streamlined, which has better aerodynamic characteristics than the existing blunt skateboards. It not only reduces air resistance, but also greatly reduces the disturbance caused by high-speed airflow, and enhances the stability of the bow.

2. The spring support of the existing bow head is replaced by the frame spring, which greatly simplifies the bow head structure of the pantograph. The frame spring has many advantages such as light weight, good balance characteristics, and good aerodynamic characteristics. It is used in the pantograph Under the coordination of the upper frame balance bar, it can always maintain the horizontal posture of the pantograph slide. It is estimated that the bow head is 3-4 kg lighter than the existing commonly used pantograph bow head. This can greatly improve the pantograph’s performance. Followability.

3. The frame spring has simple structure, easy processing and low cost.

4. The small bow angle design is adopted on the pantograph sliding board, which reduces the quality of the sliding board and is beneficial to improve the followability of the pantograph.

5. A large bow angle is installed at the upper end of the upper frame of the pantograph. This large bow angle is conducive to the smooth transition of the pantograph when it crosses the catenary branch or the anchor joint, and can avoid the use of a large bow angle on the skateboard to increase the skateboard. Mass results in less followability of the bow head.

To sum up, the present invention is a high-speed pantograph head with simple structure, light weight and good aerodynamic characteristics. After the pantograph is installed with this kind of bow head, it can not only meet the needs of high-speed current collection, but also play a better role on the lower-speed conventional railway or urban light rail railway.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of a bow head according to Embodiment 1 of the present invention.

Fig. 2 is a side view (partial sectional view) structural schematic diagram of the bow head (with the large and small bow angles removed) of Embodiment 1 of the present invention.

Fig. 3 is a schematic perspective view of the three-dimensional structure of the bow head according to Embodiment 2 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

Figures 1 and 2 show that the shape of the section of the slide plate 1 is streamlined, and the lower part of the slide plate 1 is a long strip-shaped slide plate groove 9, and a carbon slider 8 or a powder metallurgy slide block is embedded in the slide plate groove 9, which can also be It is other materials (such as powder metallurgy material), slide plate groove 9 links to each other with bracket 7 with screw, bracket 7 uses pin 10 and the support 11 on the front end 5 of frame spring 3 is connected, and the front end 5 of frame spring 3 is connected with The support 11 is fixed, the rear end 4 of the frame spring 3 is fixed on the hinge 12 of the upper frame 13 of the double pole of the pantograph, the two ends of the slide plate 1 are provided with small bow angles 2, and the first big bow angle 6 is inserted into the And be fixed in the hinge 12 of frame 13 on two rods. The streamline shape of the cross section of the skateboard 1 is that the upper and lower sides are straight lines, and the left and right ends are elliptical or circular.

Example 2:

Figure 3 shows that the shape of the cross section of the slide plate 1 is streamlined, and the lower part of the slide plate 1 is a long strip-shaped slide plate groove 9, and a carbon slider 8 or a powder metallurgy slide block is embedded in the slide plate groove 9, or it can be made of other materials. (such as powder metallurgy material), slide plate groove 9 links to each other with bracket 7 with screw, and bracket 7 bottom center is connected with the support 11 on the front end 5 of frame spring 3 with pin 10, and the front end 5 of frame spring 3 is connected with support The seat 11 is affixed, the rear end 4 of the frame spring 3 is affixed to the hinge 12 of the single-rod upper frame 14 of the pantograph, and the two ends of the slide plate 1 are provided with a second large bow angle 31 . The streamline shape of the cross section of the skateboard 1 is that the upper and lower sides are straight lines, and the left and right ends are elliptical or circular.

The structure of this embodiment is basically the same as that of Embodiment 1, the difference is that this example is aimed at the pantograph using a single rod as the upper frame, at this time the bow angle of the skateboard 1 adopts the second largest bow angle 31, in Embodiment 1 The first large bow angle 6 installed on the hinge 12 of the double-bar upper frame 13 is canceled, and only a frame spring 3 needs to be connected between the slide plate 1 and the hinge 12 of the single-bar upper frame 14, and the front end 5 of the frame spring 3 remains Through bearing 11 and pin 10, bracket 7 is connected with the bottom center of slide plate 1, and the rear end 4 of frame spring 3 is connected with single rod upper frame 14 with hinge 12.

Claims (6)

1. high speed pantograph bow, comprise the slide plate (1) and the first longbow angle (6), it is characterized in that: the bottom of described slide plate (1) is connected with the front end (5) of two frame springs (3), the rear end (4) of two described frame springs (3) all is fixed on the hinge (12) of two bar upper frames (13), the two ends of described slide plate (1) are equipped with little bow angle (2), and the described first longbow angle (6) is fixed in the hinge (12) of described pair of bar upper frame (13).

2. high speed pantograph bow as claimed in claim 1, it is characterized in that: the shape in the cross section of described slide plate (1) is stream line pattern, the bottom of described slide plate (1) is the skateboards slot (9) of a strip shape, described skateboards slot (9) is embedded with a carbon slide block (8) or partial metallurgy slide block, described skateboards slot (9) links to each other with carriage (7) with screw, described carriage (7) is connected with bearing (11) with pin (10), and the front end (5) of described frame spring (3) is affixed with described bearing (11).

3. high speed pantograph bow as claimed in claim 2 is characterized in that: the streamline contour of described slide plate (1) cross-sectional plane is: two limits are straight line up and down, and two ends, the left and right sides are oval or circular.

4. high speed pantograph bow, comprise slide plate (1), it is characterized in that: the central bottom of described slide plate (1) is connected with the front end (5) of a frame spring (3), the rear end (4) of described frame spring (3) is fixed on the hinge (12) of single pole upper frame (14), and the two ends of described slide plate (1) are equipped with the second longbow angle (31).

5. high speed pantograph bow as claimed in claim 4, it is characterized in that: the shape in the cross section of described slide plate (1) is stream line pattern, the bottom of described slide plate (1) is the skateboards slot (9) of a strip shape, described skateboards slot (9) is embedded with a carbon slide block (8) or partial metallurgy slide block, described skateboards slot (9) links to each other with carriage (7) with screw, described carriage (7) is connected with bearing (11) with pin (10), and the front end (5) of described frame spring (3) is affixed with described bearing (11).

6. high speed pantograph bow as claimed in claim 5 is characterized in that: the streamline contour of described slide plate (1) cross-sectional plane is: two limits are straight line up and down, and two ends, the left and right sides are oval or circular.

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