Device for eliminating poor shunting of railway signal track circuit
By designing a faulty splitting device for track circuits in the railway signal system, and using components such as micro switches and transformers to force the excitation circuit to be cut off, the problem that track relays cannot release the armature is solved, driving safety is improved, and the track circuit is ensured. The red light can be displayed correctly when the motorcycle is occupied.
Patent Information
- Application Number
- CN202421229344.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the railway signal system, the poor wheel-to-division caused by rust, dust and oil pollution caused by rail circuits, resulting in the track relay being unable to release the armature, and the locomotive occupying the track but does not light the red light, causing driving safety hazards.
A railway signal track circuit split defect removal device is designed, including the rail components of the sending and receiving ends, microswitches, transformers and resistors, which forcefully cut off the excitation circuit of the track relay through physical means to ensure that the armature is released when the locomotive is occupied. .
It improves the safety and reliability of the track circuit, prevents driving accidents, ensures that the track relay can correctly release the armature when occupied by the locomotive, and lights on the red light, eliminating driving safety hazards, and does not affect the original circuit structure and performance, and is compatible with other methods.
Smart Images
Figure CN222247215U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway signal equipment, in particular to a device for eliminating bad branching of railway signal track circuits. Background Art
[0002] The main function of the track circuit in the railway signal control system is to monitor the dynamics of the train or train and detect whether the wheelset of the train occupies the track section. When there is no train running in the track section with the track circuit, the current will flow from the power supply through the track to the track relay. The track relay has enough current to absorb the magnetized armature, thereby connecting the green light circuit of the signal machine and displaying a green light, indicating that the line ahead is idle and the locomotive vehicle is allowed to occupy it; when the locomotive vehicle enters the track section, the current passes through the wheelset and the track relay at the same time. Since the resistance of the wheelset is much smaller than the resistance of the track relay coil, the current flowing through the track relay is greatly reduced, forming a large shunt effect, and the suction of the track relay is weakened, releasing the armature, connecting the red light circuit of the signal machine, and displaying a red light, indicating that the track section is prohibited. This working performance of the track circuit can prevent train rear-end collisions and collisions and ensure driving safety.
[0003] However, the JZXC-480 AC track circuit used in the signal station is prone to poor wheel-to-wheel shunts due to rust, dust on the rail surface, oil pollution, etc. According to technical regulations, the voltage at the track AC end should be between 10.5 and 16V, that is, 15% higher than the working value of the track relay (9.2V). This safety factor is required to ensure reliable excitation of the track relay. When a vehicle occupies the track circuit, the track circuit is shunted by the vehicle wheels, so that the voltage at the track relay end is lower than its working value, and the track relay releases the armature, indicating that the track section is occupied. When shunting, the AC residual voltage of the track relay shall not be greater than 2.7V, that is, 60% of the release value of the track relay (4.6V), to ensure that the track relay can be released reliably. According to field data testing, in sections with poor track surface shunts, the residual pressure on the track surface can reach 5-6V when the locomotive is occupied, which is greater than the release value of the track relay 4.6V. At this time, the track relay cannot release the armature, so the locomotive occupies the track but the red light does not turn on.
[0004] When this happens, when the vehicle occupies the track or section and the red light is not on in the track section, the interlocking system will assume that the section is idle. At this time, trains or shunting routes can pass through the section at will, switches can be changed individually, routes can be unlocked, and other operations can be carried out, resulting in traffic accidents such as frontal and side collisions of trains, switch squeezing, and vehicle derailment. This is extremely dangerous and will have a serious impact on railway driving safety. Utility Model Content
[0005] The utility model aims to provide a device for eliminating poor branching of railway signal track circuit, which can solve the problem that when poor branching of vehicle wheelset occurs in the track circuit, the track relay cannot release the armature, thus causing the locomotive to occupy the track but the red light does not turn on.
[0006] In order to solve the above problems, the technical solution adopted by the utility model is: this railway signal track circuit branching fault elimination device includes a sending-end track component, a receiving-end track component, a track relay, a sending-end microswitch and a receiving-end microswitch; the sending-end track component includes a sending-end transformer, and the sending-end microswitch is connected in series to the output branch of the sending-end transformer; the receiving-end track component includes a receiving-end transformer, the receiving-end microswitch is connected in series to the input branch of the receiving-end transformer, and the track relay is connected in series to the output branch of the receiving-end transformer; the sending-end microswitch and the receiving-end microswitch are both provided with a pressure rod, and one end of the pressure rod is close to the outer side of the top of the rail.
[0007] In the above technical solution, a more specific technical solution can also be: the sending-end microswitch and the receiving-end microswitch are also provided with an action reed connected to the other end of the pressure rod, the fixed contact of the action reed is connected to the common end, and the moving contact can move between the normally closed end and the normally open end.
[0008] Furthermore, the sending-end track assembly also includes a first sliding-wire rheostat and a first resistor arranged on the output branch of the sending-end transformer; one end of the first sliding-wire rheostat and the sliding-wire end are connected to one end of the sending-end transformer, the other end of the first sliding-wire rheostat is connected to one end of the first resistor and the first rail, the other end of the first resistor is connected to the second rail and the normally closed end of the sending-end microswitch, and the common end of the sending-end microswitch is connected to the other end of the sending-end transformer.
[0009] Furthermore, the receiving-end track assembly also includes a second sliding-wire rheostat and a second resistor arranged on the input branch of the receiving-end transformer; one end of the second sliding-wire rheostat and the sliding-wire end are connected to one end of the receiving-end transformer, the other end of the second sliding-wire rheostat is connected to one end of the second resistor and the first rail, the other end of the second resistor is connected to the second rail and the common end of the receiving-end microswitch, and the normally closed end of the receiving-end microswitch is connected to the other end of the receiving-end transformer.
[0010] Furthermore, a third resistor connected in parallel with the track relay is provided on the output branch of the receiving-end transformer.
[0011] Furthermore, a lightning protection compensator is connected in parallel between the third resistor and the track relay.
[0012] Furthermore, the input branch of the sending-end transformer is connected to the power supply through a fuse.
[0013] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:
[0014] When a locomotive occupies a track section, the utility model physically cuts off the excitation circuit of the track relay, improves the safety and reliability of the track circuit, solves the impact of poor track circuit branching on driving safety, and eliminates driving safety hazards. The utility model has no impact on the original track circuit structure and performance, is a safety bonus, and is fully compatible with other methods without restrictions. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0016] The utility model is further described in detail below in conjunction with the accompanying drawings:
[0017] like Figure 1 The railway signal track circuit branching fault elimination device shown includes a sending-end track component, a receiving-end track component, a track relay GJ, a sending-end microswitch 1 and a receiving-end microswitch 2; the sending-end track component includes a sending-end transformer 3, and the sending-end microswitch 1 is connected in series to the output branch of the sending-end transformer 3; the receiving-end track component includes a receiving-end transformer 4, the receiving-end microswitch 2 is connected in series to the input branch of the receiving-end transformer 4, and the track relay GJ is connected in series to the output branch of the receiving-end transformer 4; the sending-end microswitch 1 and the receiving-end microswitch 2 are both provided with pressure rods 1-1 and 2-1, and one end of the pressure rods 1-1 and 2-1 is close to the outer side surface of the top of the rail.
[0018] The sending-end microswitch 1 and the receiving-end microswitch 2 are also provided with an action reed connected to the other end of the pressure rods 1-1, 2-1, the fixed contact of the action reed is connected to the common end, and the moving contact can move between the normally closed end and the normally open end.
[0019] The sending-end track assembly also includes a first sliding-wire rheostat RX and a first resistor 5 arranged on the output branch of the sending-end transformer 3; one end of the first sliding-wire rheostat RX and the sliding-wire end are connected to one end of the sending-end transformer 3, the other end of the first sliding-wire rheostat RX is connected to one end of the first resistor 5 and the first rail 6, the other end of the first resistor 5 is connected to the second rail 7 and the normally closed end of the sending-end microswitch 1, and the common end of the sending-end microswitch 1 is connected to the other end of the sending-end transformer 3.
[0020] The receiving-end track assembly also includes a second sliding-wire rheostat RS and a second resistor 8 arranged on the input branch of the receiving-end transformer 4; one end of the second sliding-wire rheostat RS and the sliding-wire end are connected to one end of the receiving-end transformer 4, the other end of the second sliding-wire rheostat RS is connected to one end of the second resistor 8 and the first rail 6, the other end of the second resistor 8 is connected to the second rail 7 and the common end of the receiving-end microswitch 2, and the normally closed end of the receiving-end microswitch 2 is connected to the other end of the receiving-end transformer 4.
[0021] A third resistor 9 connected in parallel with the track relay GJ is provided on the output branch of the receiving-end transformer 4, and a lightning protection compensator 10 is connected in parallel between the third resistor 9 and the track relay GJ.
[0022] The input branch of the sending-end transformer 3 is connected to the power supply through fuses RD1 and RD2.
[0023] In this embodiment, one end of the compression rods 1 - 1 , 2 - 1 is close to the outer side surface of the top of the second rail 7 .
[0024] When the utility model is in use, the sending-end track component, the receiving-end track component, the track relay GJ, the sending-end micro switch 1 and the receiving-end micro switch 2 are arranged in the same track section, the sending-end micro switch 1 and the receiving-end micro switch 2 are usually connected to the normally closed end, the voltage output from the sending-end transformer 3 first enters the sending-end micro switch 1 and then outputs to the first rail 6 and the second rail 7, and the voltage received from the first rail 6 and the second rail 7 first enters the receiving-end micro switch 2 and then outputs to the receiving-end transformer 4, after the receiving-end transformer 4 outputs the voltage, it is transmitted to the track relay GJ through the signal cable, so that the track relay GJ is attracted and engaged. Iron; when the locomotive vehicle enters the track section, the locomotive wheel pair presses the pressure rods 1-1 and 2-1 of the sending-end microswitch 1 and the receiving-end microswitch 2, so that the moving contact of the action reed is connected to the normally open end, cutting off the excitation circuit of the track relay GJ and releasing the armature, thereby connecting the red light circuit of the signal and displaying a red light; after the locomotive vehicle leaves the track section, the force on the pressure rods 1-1 and 2-1 disappears, and the moving contact of the action reed quickly returns to its position and is connected to the normally closed end, restoring the excitation circuit of the track relay GJ, and the track relay GJ attracts the armature, thereby connecting the green light circuit of the signal and displaying a green light.
[0025] In practical applications, the first sliding resistor RX and the second sliding resistor RS use 6Ω sliding resistors instead of 2Ω sliding resistors used in conventional JZXC-480 AC track circuits, which can expand the adjustable range and deliver voltage to the track relay more accurately.
[0026] When a locomotive occupies a track section, the utility model physically cuts off the excitation circuit of the track relay, improves the safety and reliability of the track circuit, solves the impact of poor track circuit branching on driving safety, and eliminates driving safety hazards. The utility model has no impact on the original track circuit structure and performance, is a safety bonus, and is fully compatible with other methods without restrictions.
Claims
1. A device for eliminating bad branching of railway signal track circuit, characterized in that: It includes a sending-end track component, a receiving-end track component, a track relay, a sending-end microswitch and a receiving-end microswitch; the sending-end track component includes a sending-end transformer, and the sending-end microswitch is connected in series to the output branch of the sending-end transformer; the receiving-end track component includes a receiving-end transformer, the receiving-end microswitch is connected in series to the input branch of the receiving-end transformer, and the track relay is connected in series to the output branch of the receiving-end transformer; the sending-end microswitch and the receiving-end microswitch are both provided with a pressure rod, and one end of the pressure rod is close to the outer side surface of the top of the rail.
2. The device for eliminating poor branching of railway signal track circuit according to claim 1, characterized in that: The sending-end microswitch and the receiving-end microswitch are also provided with an action reed connected to the other end of the pressure rod, the fixed contact of the action reed is connected to the common end, and the moving contact can move between the normally closed end and the normally open end.
3. The device for eliminating poor branching of railway signal track circuit according to claim 2, characterized in that: The sending-end track assembly further includes a first sliding-wire rheostat and a first resistor disposed on the output branch of the sending-end transformer; One end of the first sliding-wire rheostat and the sliding-wire end are connected to one end of the sending-end transformer, the other end of the first sliding-wire rheostat is connected to one end of the first resistor and the first rail, the other end of the first resistor is connected to the second rail and the normally closed end of the sending-end microswitch, and the common end of the sending-end microswitch is connected to the other end of the sending-end transformer.
4. The device for eliminating poor branching of railway signal track circuit according to claim 3, characterized in that: The receiving-end track assembly also includes a second sliding-wire rheostat and a second resistor arranged on the input branch of the receiving-end transformer; one end of the second sliding-wire rheostat and the sliding-wire end are connected to one end of the receiving-end transformer, the other end of the second sliding-wire rheostat is connected to one end of the second resistor and the first rail, the other end of the second resistor is connected to the second rail and the common end of the receiving-end microswitch, and the normally closed end of the receiving-end microswitch is connected to the other end of the receiving-end transformer.
5. The device for eliminating poor branching of railway signal track circuit according to any one of claims 1 to 4, characterized in that: A third resistor connected in parallel with the track relay is provided on the output branch of the receiving-end transformer.
6. The device for eliminating poor branching of railway signal track circuit according to claim 5, characterized in that: A lightning protection compensator is connected in parallel between the third resistor and the track relay.
7. The device for eliminating poor branching of railway signal track circuit according to claim 6, characterized in that: The input branch of the sending-end transformer is connected to the power supply through a fuse.