Three-DOF hybrid damping pantograph

Patent metadata

Field	Value
Publication number	US-9539905-B2
Application number	US-201514890156-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	Aug 19, 2014
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

The invention discloses a three-DOF hybrid damping pantograph, comprising an electric driving transmission system fixed on a base, and collector heads, transverse dampers, parallel support frames as well as longitudinal dampers. Square auxiliary holes are arranged on the base, supporting insulators are arranged on four angles below the base; four transverse dampers are symmetrically fixed on the base, and arranged on the outside of the parallel support frames and connected with the parallel support frames through hinges; four longitudinal dampers are symmetrically fixed on the top of the parallel support frames; the collector heads are connected with the parallel support frames by the longitudinal dampers and separators are arranged on the collector heads. The invention can realize bearing and damping spatially in three directions, avoid pantograph detachment, catenary scraping and other safety accidents, and improve the structural stability of the pantograph and adaptability to the catenary.

First claim

What is claimed is:

1. A three degrees of freedom (DOF) hybrid damping pantograph, comprising
an electric driving transmission system fixed on a base; and
collector heads; and further comprising
a plurality of transverse dampers;
parallel support frames;
a plurality of longitudinal dampers;
square auxiliary holes being arranged on the base; and
supporting insulators being arranged below four corners of the base;
wherein the plurality of transverse dampers comprises four transverse dampers which are symmetrically fixed on the base, and arranged on and outside of the parallel support frames and connected with the parallel support frames through hinges;
wherein the plurality of longitudinal dampers comprises four longitudinal dampers which are symmetrically fixed on top of the parallel support frames; the collector heads being connected with the parallel support frames by the four longitudinal dampers;
the parallel support frames comprising four linear guide rails, four open-type linear bearing pedestals, four two-staged or three-staged cylinders, two scalable guide posts, two U-shaped stands and an intermediate connecting plate; the linear guide rails being fixed on top of the base; the four open-type linear bearing pedestals being connected with the four linear guide rails by four first sliding pairs respectively, the four open-type linear bearing pedestals being connected with the four transverse dampers respectively through the hinges; lower ends of the four two-staged or three-staged cylinders being connected with the four open-type linear bearing pedestals by four first revolute pairs and upper ends of the four two-staged or three-staged cylinders being connected with the two U-shaped stands by four second revolute pairs respectively; bottom ends of the two scalable guide posts being fixed on the base by bolts and top ends of the two scalable guide posts being connected with the two U-shaped stands by two third revolute pairs respectively, axes of the two scalable guide posts being perpendicular to an upper surface of the base and axes of the first sliding pairs; both ends of the intermediate connecting plate being connected with the two U-shaped stands by two fourth revolute pairs respectively;
the electric driving transmission system comprising two left rotating screw rod, two right rotating screw rod, two motors, two retarders and four bearing pedestals; the retarders being dual-output-shaft worm gear retarders; the two motors being installed at input ends of the two retarders respectively; one end of each left rotating screw rod and one end of each right rotating screw rod being connected with two output shafts of each retarder respectively, and the other ends of the left and right rotating screw rods being installed on the base by the bearing pedestals;
each longitudinal damper comprising a pair of lugs, a guide rod and a spring, the lugs being located on an upper surface of the intermediate connecting plate and firmly connected with the intermediate connecting plate, the spring being sleeved on the guide rod and both ends of the guide rod being installed in the pair of lugs respectively.

2. The three-DOF hybrid damping pantograph according to claim 1 , wherein each of the four transverse dampers comprises a cross-moving slide base, a preloaded spring and a cross-moving damper, wherein the four cross-moving slide bases are installed on the four linear guide rails of the parallel support frames and connected with the four linear guide rails by the four first sliding pairs respectively; the preloaded springs being located between the cross-moving slide bases and the open-type linear bearing pedestals, and the preloaded springs being sleeved on the cross-moving dampers; wherein one end of each cross-moving damper is connected with its associated open-type linear bearing pedestal of the parallel support frames by a first hinge and the other end of each cross-moving damper is connected with its associated cross-moving slide base by a second hinge.

3. The three-DOF hybrid damping pantograph according to claim 1 , wherein the collector heads comprise two head brackets, four separators, four sliding plate bolts and two carbon sliding plates, wherein bottom of both ends of each head bracket are provided with two longitudinal sliding sleeves having two parallel axes respectively, two top parts of each head bracket being provided with two dismounting holes respectively; the sliding plate bolts being connected with the head brackets by the separators; each carbon sliding plate being located on top ends of two of the four sliding plate bolts and firmly connected with the sliding plate bolts;
wherein each separator comprises a plurality of elastic jack catches and a trough body, the elastic jack catches being located under the sliding plate bolt and firmly connected with the sliding plate bolt, the plurality of elastic jack catches comprising at least three elastic jack catches, an external side at a bottom of each elastic jack catch being provided with an antiskid bulge; wherein the trough body is located on each of the two top parts of the head brackets and firmly integrated with the head brackets, and a trough is provided in each trough body; and the elastic jack catches are installed in the trough of each trough body.

4. The three-DOF hybrid damping pantograph according to claim 1 , wherein axes of the first revolute pairs, the second revolute pairs and the third revolute pairs on the parallel support frames are parallel to each other, the axes of the first revolute pairs are perpendicular to axes of the two-staged or three-staged cylinders and axes of the fourth revolute pairs, axes of the first sliding pairs are perpendicular to the axes of the first revolute pairs, and the axes of the first sliding pairs are parallel to the axes of the fourth revolute pairs.

Assignees

• Univ Anhui Sci & Technology
• Zhu Xiaolong

Inventors

• Wang Chengjun
• Li Long
• Zhu Xiaolong
• Liu Zhiwei
• Zhang Chao
• Liu Kai
• Zhang Tianyu

Classifications

• B60L5/18 Primary

  using bow-type collectors in contact with trolley wire · CPC title

• B61C3/00

  Electric locomotives or railcars (characterised by power transmission B61C9/00; electrical features B60L; H02) · CPC title

• B60L5/22 Primary

  Supporting means for the contact bow · CPC title