Tension monitoring and indicating device for catenary wire and messenger wire of electrified railway

Abstract

The utility model belongs to the electrification railway mobile contact network technical field relates to a kind of electrified railway contact network wire and load cable tension monitoring indicating device;Including the first tension indicating device and the second tension indicating device being respectively arranged on wire and load cable;The first tension indicating device and first warning board are electrically connected;The second tension indicating device and second warning board are electrically connected;Real-time and reliable monitoring can be carried out to contact network wire and load cable tension.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrified railway mobile contact network, and relates to a tension monitoring and indicating device for contact wire and load-bearing cable of electrified railway. BACKGROUND

[0002] The tension state of the contact wire and load-bearing cable in the traction power supply system of the electrified railway is a key factor to ensure the safe operation of the entire contact network. The size of the tension is directly related to the stability and durability of the contact network, and any tension change beyond the normal range can cause serious consequences.

[0003] When the tension is too large and exceeds the tensile strength of the contact wire and load-bearing cable, the contact wire and load-bearing cable may break due to the inability to withstand the excessive tension. This not only causes power supply interruption, but also may trigger a series of chain reactions such as train shutdown, equipment damage, etc., and in severe cases may even endanger the safety of train operation. On the other hand, if the tension is too small, the contact wire will have too large a sag due to the lack of sufficient tension. This not only reduces the stability of the contact network, but also may cause pantograph failure, i.e. abnormal contact between the pantograph and the contact network, thereby affecting the normal current collection and running of the train.

[0004] In actual operation, the sticking of the contact network compensation device is a common problem. When the compensation device cannot work normally, it may cause excessive tension, thereby exceeding the tensile strength of the contact wire and load-bearing cable and causing serious accidents such as broken wire and broken cable. Therefore, accurate monitoring and timely adjustment of the tension of the contact network are particularly important.

[0005] However, the current tension monitoring means of the contact wire and load-bearing cable still has deficiencies. The traditional monitoring method mainly relies on manual inspection and inspection, i.e. the working personnel checks the rotation state of the compensation pulley by lifting the toad, thereby estimating the size of the tension of the contact network. This method not only has low efficiency, but also cannot guarantee accuracy. Because manual estimation is often affected by various factors such as the experience, judgment ability and environmental factors of the working personnel, it is difficult to obtain accurate results. UTILITY MODEL CONTENTS

[0006] The utility model aims to solve the technical problems of the deficiencies in the prior art for monitoring the tension of the contact wire and load-bearing cable, and provides a tension monitoring and indicating device for the contact wire and load-bearing cable of the electrified railway, which can perform real-time and reliable monitoring.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a kind of electrified railway contact net wire and cable tension monitoring indicating device, including the first tension indicating device and the second tension indicating device being respectively arranged on wire and cable support, the first tension indicating device and first warning board electric connection, the second tension indicating device and second warning board electric connection.

[0009] Preferably, the first tension indicating device one end and wire lower anchor porcelain bottle are connected, and the other end and first pulley support pull rod are connected.

[0010] Preferably, the second tension indicating device one end and cable support lower anchor porcelain bottle are connected, and the other end and second pulley support pull rod are connected.

[0011] Preferably, the tension indicating device is double watch needle structure;First watch needle and second watch needle are provided on the first tension indicating device;Third watch needle and fourth watch needle are provided on the second tension indicating device.

[0012] Preferably, wire lower anchor porcelain bottle and first pulley support pull rod are connected by steel wire rope.

[0013] Preferably, cable support lower anchor porcelain bottle and second pulley support pull rod are connected by steel wire rope.

[0014] Preferably, the tension indicating device both sides adopt double-ear connection mode.

[0015] Preferably, the tension indicating device both sides adopt pestle ring connection mode.

[0016] Preferably, the tension indicating device and alarm device are electrically connected.

[0017] Preferably, the warning board is provided with display screen.

[0018] Compared with prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses the tension indicating device respectively to contact net wire and cable support are carried out tension monitoring, when pulling force exceeds the specified value, and tension indicating device issues warning signal in time through warning board, reminds the personnel of operation and maintenance to take corresponding measure, prevents the safety accident caused by tension too big or too small. ACCURACY

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawing in the embodiment briefly introduced, should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to range, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0021] Figure 1 It is a structural schematic view of the contact net wire and the tension monitoring indicating device of the electrified railway.

[0022] 1, wire; 2, load bearing cable; 3, first tension indicating device; 4, second tension indicating device; 5, first hand; 6, second hand; 7, second warning board; 8, plummet; 9, steel wire rope. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0025] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the embodiments of the utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, if appearing term " setting " " installation " " link " " connection " should do broad sense, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication。For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned term in the utility model according to specific circumstances.

[0029] The utility model is further described in detail below in combination with drawings:

[0030] The utility model provides a kind of electrified railway catenary wire and cable tension monitoring indicating device, including the first tension indicating device 3 and the second tension indicating device 4 respectively being arranged on wire 1 and cable 2;The first tension indicating device 3 and first warning board electric connection;The second tension indicating device 4 and second warning board 7 electric connection.

[0031] By being provided with first tension indicating device 3 on wire 1, the tension of wire can be monitored in real time, the change of wire 1 tension can be accurately, quickly reflected, provides key data support for railway operation and maintenance personnel.When wire 1 tension exceeds preset range, first tension indicating device 3 can send warning signal in time through first warning board, reminds operation and maintenance personnel to take corresponding measures, prevents the security incident caused by tension too large or too small.

[0032] By being provided with second tension indicating device 4 on cable 2, the real-time monitoring of cable 2 tension can be realized, the tension value of cable can be accurately measured, and warning signal is sent through second warning board 7 when tension is abnormal, ensure the safe and stable of railway operation.

[0033] The warning board is provided with display screen.When first tension indicating device 3 detects the tension abnormality of wire 1, signal is transmitted to first warning board by electric connection.When first warning board receives signal, the color of display screen on first warning board changes.Second tension indicating device 4 is also connected with second warning board 7 by electric connection.When the tension of cable 2 is abnormal, second tension indicating device 4 will send signal, and the color of display screen on second warning board 7 changes after second warning board 7 receives signal.When routine patrol personnel or locomotive crew member can quickly find whether the tension of wire 1 and cable 2 meets the requirement by color indication.

[0034] The first tension indicating device 3 is connected to the wire lower anchor porcelain bottle at one end and to the first pulley support pull rod at the other end. The second tension indicating device 4 is connected to the load-bearing cable lower anchor porcelain bottle at one end and to the second pulley support pull rod at the other end. By directly connecting to the lower anchor porcelain bottle and the pulley support pull rod, the first tension indicating device 3 and the second tension indicating device 4 can more accurately reflect the tension state of the wire 1 and the load-bearing cable 2, thereby improving the accuracy and reliability of the entire monitoring system. Secondly, the installation position of the first tension indicating device 3 and the second tension indicating device 4 is outside the basic building limit, which does not affect the train operation, and this part is not live, which is not live equipment, and does not affect the power supply safety.

[0035] The tension indicating device is a double-needle structure; the first tension indicating device 3 is provided with a first needle 5 and a second needle 6; the second tension indicating device 4 is provided with a third needle and a fourth needle, the first needle 5 and the third needle can reflect the tension size in real time, so that the operation and maintenance personnel can intuitively observe the tension state of the current wire 1 and the load-bearing cable 2, so as to take necessary maintenance measures in time. The second needle 6 and the fourth needle reach the maximum value and remain at the current position and record the maximum value, which is of great significance for evaluating the long-term stress of the wire 1 and the load-bearing cable 2, predicting potential safety hazards, and formulating a reasonable maintenance plan. The tension indicating device and the alarm device are electrically connected, and when the indicating needle reaches the warning value or the dangerous value, the alarm device is triggered by the needle to indicate the alarm.

[0036] The wire lower anchor porcelain bottle and the first pulley support pull rod are connected by a steel wire rope 9. The load-bearing cable lower anchor porcelain bottle and the second pulley support pull rod are connected by a steel wire rope 9. The steel wire rope 9 has high strength, high toughness and good wear resistance. Using the steel wire rope 9 to connect the lower anchor porcelain bottle and the pulley support pull rod can ensure the stability and reliability of the connection part, effectively prevent safety accidents caused by loose or broken connection. Even if the tension gauge breaks, the steel wire rope 9 can prevent the wire 1 or the load-bearing cable 2 from breaking. Preferably, the cross-sectional area of the steel wire rope 9 is 70mm 2。

[0037] The tension indicating device adopts a double-ear connection mode or a pestle ring connection mode on both sides. The double-ear connection mode is fastened through the ears on both sides and a connecting piece (such as a bolt, a nut, etc.), forming a stable connection structure that can withstand a large tensile force and shear force, ensuring the stability and reliability of the tension indicating device in a complex stress environment. At the same time, the double-ear connection mode uses standardized connecting pieces such as bolts and nuts, making the installation and disassembly process simple and fast, and the maintenance personnel can easily complete the connection work without special tools, improving work efficiency. Secondly, since the double-ear connection mode uses standardized connecting pieces, the maintenance personnel can easily check the fastening degree and wear condition of the connection part. When potential problems are found, measures can be taken to repair or replace them quickly to ensure the safety and reliability of the overall structure.

[0038] The pestle ring connection mode realizes fastening connection through the cooperation of the pestle head and the ring hole, has high strength, can withstand a large tensile force and torque, and ensures the stability and reliability of the tension indicating device in harsh environments. At the same time, the pestle ring connection mode has a self-locking function, that is, when the pestle head is inserted into the ring hole and rotated to a certain angle, a stable locking structure is formed, which can effectively prevent the connection part from loosening or falling off due to vibration or external force. Secondly, the pestle ring connection mode allows fine adjustment within a certain range to adapt to the installation needs of different tension indicating devices. Therefore, when the tension indicating device needs to be calibrated, the cooperation degree of the pestle head and the ring hole can be adjusted to achieve accurate calibration.

[0039] One end of the pulley support pull rod is connected with a plummet 8. When the guide wire 1 or the load-bearing cable 2 changes in length due to temperature changes, wind effects or vibrations when trains pass, the plummet 8 will move accordingly to maintain the stability of the tension of the guide wire. Specifically, when the guide wire 1 or the load-bearing cable 2 lengthens, the plummet 8 will move downward to increase the tension on the guide wire 1 or the load-bearing cable 2 through the action of gravity; when the guide wire 1 or the load-bearing cable 2 shortens, the plummet 8 will move upward to reduce the tension, allowing the guide wire 1 or the load-bearing cable 2 to maintain an appropriate degree of slack, effectively improving the support stability of the electric wire and improving the quality and safety of the electric wire.

[0040] The above is only a preferred embodiment of the present utility model and is not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An overhead line and messenger wire tension monitoring and indicating device for electrified railways, characterized in that, The utility model relates to a tension indicator for power transmission line, including first tension indicating device (3) and second tension indicating device (4) are arranged respectively on conductor (1) and bearing cable (2), first tension indicating device (3) and first warning board electricity are connected, second tension indicating device (4) and second warning board (7) electricity are connected.

2. The device according to claim 1, characterized in that, One end of the first tension indicating device (3) is connected with the conductor lower anchor porcelain bottle, and the other end is connected with the first pulley support pull rod.

3. The device according to claim 1, characterized in that, One end of the second tension indicating device (4) is connected with the bearing cable lower anchor porcelain bottle, and the other end is connected with the second pulley support pull rod.

4. The device according to claim 1, characterized in that, The tension indicating device is all double-needle structure, the first tension indicating device (3) is provided with first needle (5) and second needle (6), and the second tension indicating device (4) is provided with third needle and fourth needle.

5. The device according to claim 2, characterized in that, The conductor lower anchor porcelain bottle and the first pulley support pull rod are connected through the steel wire rope (9).

6. The device according to claim 3, characterized in that, The bearing cable lower anchor porcelain bottle and the second pulley support pull rod are connected through the steel wire rope (9).

7. The device according to claim 1, characterized in that, The tension indicating device is connected with the alarm device through the ear connection mode.

8. The device according to claim 1, characterized in that, The tension indicating device is connected with the alarm device through the pestle ring connection mode.

9. The device according to claim 1, characterized in that, The tension indicating device is connected with the alarm device through the ear connection mode.

10. The device according to claim 1, characterized in that, The warning board is provided with a display screen.

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