Point switch machine
A switch machine and action rod technology, which is applied to the mechanical equipment used to manipulate turnouts or line breakers, railway car body parts, railway signals, etc., can solve the problems of increased ball wear and reduced life of ball screws, and achieve The effect of prolonging the service life, reducing the processing cost and reducing the harmful impact
Active Publication Date: 2015-04-15
SIEMENS SIGNALLING
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Problems solved by technology
This is because during the operation of the ball screw, the ball and the screw are always in contact with an arc, and during the movement of the ball, the speed of each contact point on this arc is different. As a result, in addition to pure rolling, there is a large amount of relative sliding between the ball and the screw. It is this kind of sliding that causes the wear of the balls to increase during the repeated operation of the switch machine, resulting in a reduction in the overall life of the ball screw.
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[0015] The present invention will be described below in combination with preferred embodiments of the present invention. Numerous specific details are set forth in the following description. However, it will be understood by those skilled in the art that the present invention may be practiced without some or all of these details. In some cases, well-known technologies have not been described to avoid unnecessary confusion.
[0016] figure 2 A schematic diagram of a switch machine according to an embodiment of the present invention is shown. An operating lever 110 is installed in the housing 101 of the switch machine 100 , a planetary gear mechanism 120 is installed above the operating lever 110 , and a detection lever 130 is installed on one side of the operating lever 110 . The planetary gear mechanism 120 can be connected with the motor 130 through, for example, a gear reducer (not shown in the figure). Those skilled in the art can understand how to connect the motor an...
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A point machine (100) comprises a motion rod component (110), and further comprises a planet gear mechanism (120), where the planet gear mechanism (120) comprises a large gear (122) having an outer toothed ring (1221) and an inner toothed ring (1222), a planet gear (124) is engaged with the inner toothed ring (1222), a shaft of the planet gear (124) is fixedly connected to an end of a swing arm (126), the other end of the swing arm (126) is pivotally connected to a driving shaft (128), and the driving shaft (128) is connected to the motion rod component (110). By means of a gear mechanism, a bearing capability of the point machine (100) is increased, the entire circumference of the gear mechanism is a kinematic pair, so that local wear is reduced, the service life of the point machine (100) is extended, harmful impact on the point machine (100) during start and stop is reduced, and a mature gear transmission technology is adopted to reduce a processing cost.
Description
technical field [0001] The invention relates to railway control equipment, in particular to a switch machine. Background technique [0002] The switch machine is the executive mechanism of the turnout control system. It is used to switch the switch point rail or core rail of the locked switch, and expresses the position and state of the switch point rail or core rail in the supervision interlocking area. [0003] At present, the transmission mode of the electric switch machine mainly adopts ball screw transmission, such as figure 1 The shown switch machine 10 converts the circular motion output by the motor 12 into a linear motion through the ball screw mechanism 14 to drive the action rod 16 of the switch machine to realize the conversion of the switch. The transmission scheme of the ball screw has been used and improved for many years, and the technology has become mature. [0004] For the ball screw drive, it has become a bottleneck affecting the performance of the who...
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IPC IPC(8): B61L5/02
CPCB61L5/02
Inventor 杨超韩锐
Owner SIEMENS SIGNALLING