Rapid adjustment device for receiving level of track circuit in ZPW2000 interval

Abstract

The utility model provides a quick adjusting device for receiving level of a ZPW2000 section track circuit, which comprises a lower shell and an upper shell capable of being buckled on the lower shell, a level gear shifting knob is arranged on the top wall of the upper shell, and a connecting rod of the level gear shifting knob penetrates into the upper shell from the outside and then is connected with a band switch fixed in the lower shell; and a connecting cable of the wave band switch extends out from one side of the lower shell. The rapid adjustment device for the receiving level of the track circuit in the ZPW2000 interval is simple and convenient to install, construct and maintain, and solves the problems that the receiving level is inconvenient to adjust frequently on site and potential hazards possibly exist.

Description

Technical Field

[0001] The utility model relates to a rapid adjustment of a railway ZPW2000 track circuit receiving level, in particular to a device for rapidly adjusting a ZPW2000 section track circuit receiving level. Background Art

[0002] When the output voltage of the ZPW2000 section track circuit does not meet the standard due to leakage and other reasons, it is easy to cause the track circuit red light band, affecting the normal operation of the train, so the output level often needs to be adjusted according to actual needs. At present, the receiving level adjustment is completed on the 100M connection terminal at the rear of the attenuator, and the level adjustment is achieved by connecting the corresponding terminals through jumpers. Some level levels have many jumpers, which is difficult to implement and has high risks. In particular, the 100M connection terminals are easily damaged due to frequent plugging, and once damaged, it is extremely difficult to replace, which may cause a greater impact on the train transportation order. Utility Model Content

[0003] The purpose of the utility model technology is to provide a device that can achieve safe and efficient ZPW2000 track circuit level adjustment, so as to reduce the risk of frequent plugging and unplugging of terminals when adjusting the level during on-site operations, while conforming to the installation frame size of the railway signal assembly frame and being able to be easily installed, removed and maintained.

[0004] To achieve the above-mentioned purpose, the utility model provides a ZPW2000 section track circuit receiving level rapid adjustment device, including a lower shell and an upper shell that can be buckled on the lower shell, a level gear conversion knob is arranged on the top wall of the upper shell, and the connecting rod of the level gear conversion knob is inserted into the upper shell from the outside and connected with the band switch fixed in the lower shell; the connecting cable of the band switch extends from one side of the lower shell.

[0005] The outer surface of the top wall of the upper shell is provided with a level level table and a gear indicating digital disk arranged in a ring around the level gear conversion knob.

[0006] There are at least two band switches, and the contacts of the two band switches are redundantly connected in parallel.

[0007] The utility model has the advantages that the ZPW2000 section track circuit receiving level rapid adjustment device is easy to install, construct and maintain, and solves the problems of inconvenience of frequent on-site adjustment of the receiving level and possible potential hidden dangers. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the rapid adjustment device for the receiving level of the ZPW2000 section track circuit.

[0009] Figure 2This is the circuit diagram of the fast adjustment device for the receiving level of the ZPW2000 section track circuit.

[0010] Explanation of the accompanying reference numerals: 1. lower shell; 2. upper shell; 3. level gear conversion knob; 4. band switch; 5. connecting cable; 6. level level table; 7. gear position indication digital dial. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0012] In order to reduce the risk of frequent plugging of terminals when adjusting the level during on-site operations, meet the installation frame size of the railway signal assembly frame, and enable easy installation, removal and maintenance, this embodiment first collects and optimizes the receiving levels of 1,400 track circuit sections in different regions and working environments, and determines 7 main level levels as the final adjustment plan for this technical transformation, so that it can meet the goal of rapid adjustment and meet the requirements of the railway signal equipment maintenance implementation rules.

[0013] On this basis, this embodiment provides a Figure 1 The ZPW2000 section track circuit receiving level quick adjustment device shown comprises a lower shell 1 and an upper shell 2 that can be buckled on the lower shell 1. A level gear conversion knob 3 is arranged on the top wall of the upper shell 2. The connecting rod of the level gear conversion knob 3 penetrates the upper shell 2 from the outside and is connected to the band switch 4 fixed in the lower shell 1. The connecting cable 5 of the band switch 4 extends from one side of the lower shell 1. A level level appendix 6 is arranged on the outer surface of the top wall of the upper shell 2, which can facilitate the operator to check the gear indication and the level level. At the same time, the gear indication digital disk 7 arranged in a ring around the level gear conversion knob 3 on the outer surface of the top wall of the upper shell 2 is used to intuitively and clearly define the adjustment level. There are at least two band switches 4, and the redundant parallel connection between the contacts of the two band switches 4, that is, the band switch connection circuit is adopted to achieve 9 level adjustment, and the contact connection uses a redundant parallel mode, which has high safety and reliability and complies with the fault-safety principle. The connection line between the device and the universal connection terminal on the back of the existing combined rack attenuator adopts a one-time fixed connection method, that is, the electrical connection is completed through the connecting cable 5, without plugging and unplugging, which completely eliminates the risk of the universal connection terminal at the back of the existing attenuator being easily damaged by frequent plugging and extremely difficult to replace after damage.

[0014] In practical application, the ZPW2000 section track circuit receiving level quick adjustment device is equipped with a connecting cable. When in use, first install and fix the quick adjustment device in the idle and unwired position of the transmitter and attenuator behind the section frequency shift rack. The second step is to put the connection wiring of the quick adjustment device into the wiring trough nearby, lead it out from the wiring trough and arrange it at the same height as the attenuator. The third step is to remove all the adjustment jumpers on the original attenuator. After the removal is completed, Figure 2 Short-circuit the contacts a2 and a3 shown, leave a4 vacant, and then connect all the wiring of the quick adjustment device to the corresponding universal adjustment terminals on the back of the attenuator according to the terminal numbers on the lead-out wires. The last step is to perform the gear rotation function and electrical characteristic parameters.

[0015] See also Figure 2 The instructions are as follows:

[0016] 1. Wiring instructions:

[0017] 1. a2 connects to a3, a5 connects to a6, and a7 connects to a8.

[0018] 2. a1, a2, a4, a5, a7, a9, and a10 are connected to pins 1 to 7 of band switch A and band switch B respectively, and band switch pins 7-12 are short-circuited (to prevent open circuit fault caused by rotation to neutral position).

[0019] 2. Level adjustment instructions:

[0020] By rotating the combination of band switch A and band switch B, a total of 9 levels of 14, 21, 42, 56, 63, 84, 126, 140, and 147 can be adjusted.

[0021] 3. Level selection instructions:

[0022] Through the analysis of the main track input data of 1,400 section track circuits in our section, we can select seven levels, namely 21, 42, 56, 63, 84, 126 and 147, to meet the needs of on-site use. If necessary, the level adjustment gears of 14 and 140 can be opened.

[0023] 4. Equipment Description

[0024] The band switch uses the original Japanese NKK band switch MR-A112 rotary electronic handwheel 1 knife 12 gears, the nominal value is 250mA / 125v / AC, and the resistance of each node tested by a micro-resistance tester is about 3mΩ. In the test at the vocational education training base, when the rail output voltage is the highest (within the adjustment table range), the wiring current is adjusted to about 70mA, and the band switch meets the requirements.

[0025] To sum up, it is not difficult to see that the ZPW2000 section track circuit receiving level rapid adjustment device is easy to install, construct and maintain, which solves the inconvenience of frequent adjustment of the receiving level on site and the potential hidden dangers that may exist, and achieves the technical goal.

Claims

1. A device for quickly adjusting the receiving level of a ZPW2000 section track circuit, comprising a lower shell (1) and an upper shell (2) that can be buckled onto the lower shell (1), characterized in that: A level gear conversion knob (3) is arranged on the top wall of the upper shell (2); a connecting rod of the level gear conversion knob (3) penetrates into the upper shell (2) from the outside and is connected to a band switch (4) fixed in the lower shell (1); a connecting cable (5) of the band switch (4) extends from one side of the lower shell (1).

2. The quick adjustment device according to claim 1, characterized in that: The outer surface of the top wall of the upper shell (2) is provided with a level scale table (6) and a gear indicating digital disk (7) arranged in a ring around the level gear conversion knob (3).

3. The quick adjustment device according to claim 1 or 2, characterized in that: There are at least two band switches (4), and the contacts of the two band switches (4) are redundantly connected in parallel.

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