Device and method for measuring length of track connecting line

Abstract

The invention relates to the technical field of track signal engineering, and provides a track connecting line length measuring device and a track connecting line length measuring method.The track connecting line length measuring device comprises a telescopic rod; one end of the telescopic rod is rotationally connected with a reel; the other end of the telescopic rod is connected with a tensioning piece, and a ruler passing through groove is formed in the tensioning piece. The two fixing fasteners are arranged at the two ends of the telescopic rod respectively; the fixing fastener comprises a fixed claw and a movable claw, the fixed claw is fixed to the end of the telescopic rod, the movable claw is movably connected with the telescopic rod, and the movable claw can be close to or away from the fixed claw in the length direction of the telescopic rod; one end of the flexible ruler is wound on the winding drum, and the other end of the flexible ruler penetrates through the ruler passing through groove. According to the invention, the technical problems that an existing measuring tool is difficult to accurately obtain the length of the track connecting line, so that the track connecting line cannot be installed or is easily damaged in later construction, a new track connecting line needs to be replaced, and additional material cost and labor cost are caused can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of track signal engineering, and particularly relates to a device and a method for measuring the length of a track connecting wire. Background Art

[0002] In track signal engineering, a track connecting wire is a cable used to maintain the continuity of a track circuit and the normal function of track electrical appliances. According to different installation positions, it includes rail lead wires, turnout jumpers, rail joint wires, branch and parallel wires, and lateral connecting wires, etc. When installing, it is necessary to measure the track connecting wire first, and then select a standard cable with a corresponding length for installation.

[0003] However, most track connecting wires are combined space curves that include both straight segments and curved segments; for example, for a turnout jumper, one end is connected to the plug hole on the side of one of the rails, then bends downward under the rail, then extends horizontally along the track to the lower part of the other rail, and finally bends upward to the plug hole on the side of this rail; most existing measuring tools (such as a ruler or a tape measure) are often only suitable for measuring the length of a single straight segment cable, and it is difficult to obtain the accurate length of a track connecting wire with such a combined space curve, which easily leads to the selected cable length being too short or too long during installation, resulting in the track connecting wire being unable to be installed, or being easily damaged during later construction (such as the operation of a tamping machine for tamping the ballast bed); furthermore, it leads to the need to replace and reinstall a new track connecting wire, and causes additional material costs and labor costs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the technical problems that existing measuring tools are difficult to accurately obtain the length of a track connecting wire, resulting in the track connecting wire being unable to be installed or easily damaged during later construction, and the need to replace the new track connecting wire, thereby causing additional material costs and labor costs, and providing a device and a method for measuring the length of a track connecting wire.

[0005] In a first aspect, the present invention provides a device for measuring the length of a track connecting wire, including:

[0006] A telescopic rod with adjustable length; one end of the telescopic rod is rotatably connected to a reel, and the axis of the reel is perpendicular to the length direction of the telescopic rod; the other end of the telescopic rod is connected to a tensioning member, and a through slot for the tape is provided on the tensioning member.

[0007] Fixed fasteners, two fixed fasteners are respectively arranged at both ends of the telescopic rod; the fixed fastener includes a fixed claw and a movable claw, the fixed claw is fixed at the end of the telescopic rod, the movable claw is movably connected to the telescopic rod, and the movable claw can approach or move away from the fixed claw along the length direction of the telescopic rod.

[0008] A flexible tape, one end of the flexible tape is wound around the reel, and the other end of the flexible tape passes through the through slot for the tape.

[0009] The track connection line length measuring device of this solution includes two main parts: a telescopic rod and a flexible ruler. The length of the telescopic rod is adjustable and corresponds to the straight section of the track connection line; the length and shape of the flexible ruler are adjustable and correspond to the curved section of the track connection line; a fixed fastener is also provided on the telescopic rod, and the telescopic rod can be fixed relative to the rail through the fixed fastener.

[0010] When measuring the length of the track connection line, the telescopic rod is fixed relative to the rail through the fixed fastener, and then the combination of the telescopic rod and the flexible ruler is used as an analog track connection line. By adjusting the position of the telescopic rod relative to the rail, the length of the telescopic rod, the length of the flexible ruler, and the shape of the flexible ruler, the installation state of the combination is made to match the theoretical installation state of the track connection line (for example, making the position of the combination relative to the rail match the theoretical installation position of the track connection line, the length of the straight section match the length of the straight section of the track connection line, and the length and shape of the flexible ruler match the length and shape of the curved section of the track connection line). In this way, the combination can accurately reflect the theoretical installation state of the track connection line in terms of position, length, and shape. Therefore, by measuring the length of the combination at this time, the accurate theoretical installation length of the track connection line can be measured, providing a basis for the subsequent selection of the cable length, and avoiding the situation where the track connection line is too short to be installed or too long, resulting in an increase in material costs and being easily damaged during later construction, and also avoiding the additional labor costs and additional material costs consumed in later replacing or repairing the track connection line.

[0011] When adjusting the length of the telescopic rod, the drums and tensioning parts at both ends of the telescopic rod can exert a tensioning effect on the flexible ruler, straightening the flexible ruler between the drums and the tensioning parts, so as to accurately reflect the length of the telescopic rod as much as possible and avoid the problem that the reading of the flexible ruler is too large due to the slack of the flexible ruler.

[0012] Preferably, a hollow housing is provided at one end of the telescopic rod connected to the drum, and the drum is arranged inside the hollow housing.

[0013] This solution can provide protection for the drum and the flexible ruler wound around the drum, inhibit the erosion of the external environment on the drum and the flexible ruler, and is beneficial to improving the service life of the flexible ruler.

[0014] Preferably, a spiral spring is connected between the drum and the hollow housing, and the axis of the spiral spring is parallel to the axis of the drum.

[0015] This solution can, on the one hand, enable the drum to automatically retract the flexible ruler under the elastic force of the spiral spring, thus simplifying the storage steps of the staff after completing the measurement; on the other hand, it can also use the elastic force of the spiral spring to assist in straightening the flexible ruler, which is beneficial to improving the measurement accuracy of the track connection line.

[0016] Preferably, an observation window is provided on the hollow housing, and the position of the observation window matches the position of the end of the telescopic rod.

[0017] This solution enables the operator to conveniently read the reading of the flexible ruler at the corresponding position through the hollow housing.

[0018] Preferably, the telescopic rod is of a hollow structure, and the flexible ruler passes through the inside of the telescopic rod and exits the telescopic rod through the ruler passing slot.

[0019] In this solution, the flexible ruler passes through the inside of the hollow telescopic rod. On the one hand, it can use the telescopic rod to protect the flexible ruler and reduce the risk of the flexible ruler being damaged due to the external environment; on the other hand, it also enables the flexible ruler to be straightened as much as possible to fit the axis of the telescopic rod after being straightened, which is beneficial to obtaining the length of the telescopic rod more accurately through the flexible ruler, and thus beneficial to improving the overall measurement accuracy of the subsequent track connection line.

[0020] Preferably, a ruler hook is connected to the end of the flexible ruler far from the reel.

[0021] This solution enables the operator to temporarily hang the flexible ruler at the specified position through the ruler hook after pulling the end of the flexible ruler to the specified position, thus avoiding the situation where the operator needs to keep holding the end of the flexible ruler to maintain the shape and position of the flexible ruler.

[0022] Preferably, a magnet is provided on the ruler hook.

[0023] This solution can temporarily fix the end of the flexible ruler to the rail through the magnet, thus avoiding the situation where the operator needs to keep holding the end of the flexible ruler to maintain the shape and position of the flexible ruler.

[0024] In a second aspect, the present invention provides a method for measuring the length of a track connection line, which is applied to the track connection line length measuring device of the present invention, and includes the following steps:

[0025] Fix the telescopic rod relative to the rail through the fixed fastener, and adjust the length of the telescopic rod so that the length and position of the telescopic rod match the length and position of the straight section of the track connection line;

[0026] Pull out the flexible ruler from the ruler passing slot, and adjust the length and shape of the pulled-out part of the flexible ruler so that the length and shape of the pulled-out part of the flexible ruler match the length and shape of the curved section of the track connection line;

[0027] Determine the theoretical length of the track connection line according to the length of the telescopic rod and the length of the pulled-out part of the flexible ruler.

[0028] The method for measuring the length of the track connection line in this solution can simulate the theoretical installation state of the track connection line by using the track connection line length measuring device. It can associate the telescopic rod and the flexible ruler with the straight section and the bent section of the track connection line respectively from three dimensions of position, length, and shape. Furthermore, the accurate theoretical length of the track connection line can be obtained through the lengths of the telescopic rod and the flexible ruler, which has the advantages of high measurement accuracy and simple operation.

[0029] Preferably, when the track connection line is a turnout jumper wire, the following steps are further included:

[0030] A1. Clamp the two ends of the telescopic rod to the two side rails respectively through fixed fasteners;

[0031] A2. Pull out and bend the flexible ruler from the ruler passing slot so that the end of the flexible ruler abuts against the specified position on the side of the corresponding side rail; read the reading L1 of the flexible ruler at the end of the telescopic rod far from the ruler passing slot, and read the reading L2 of the flexible ruler at the ruler passing slot;

[0032] A3. Determine the theoretical length of the track connection line according to the sum of L1 and L2.

[0033] This solution provides one specific measurement method for the track connection line (turnout jumper wire). The turnout jumper wire includes a straight section and two bent sections at both ends of the straight section. The flexible ruler of the track connection line length measuring device can only extend from one end of the telescopic rod. Therefore, generally, if you want to measure the length of the turnout jumper wire, you need to first simulate and measure one of the bent sections through the flexible ruler, then turn the telescopic rod around, and then use the flexible ruler to separately simulate and measure the other bent section.

[0034] However, considering that the two bent sections of the turnout jumper wire are symmetric left and right, this solution only simulates one of the bent sections of the turnout jumper wire through the flexible ruler in step A2. Then, read L1 including the length of the straight section (the length of the telescopic rod) and the length of the bent section (the pulled-out part of the flexible ruler), and L2 only including the length of the bent section. Then, the sum of L1 and L2 includes one straight section and two bent sections, which can be used to represent the theoretical length of the turnout jumper wire, and there is no need to simulate and measure the other bent section of the turnout through the flexible ruler; that is, this solution omits the simulation and measurement steps of one bent section, and the operation is more simple and fast.

[0035] Preferably, when the track connection line is the rail lead wire on the far side of the impedance bond, the following steps are further included:

[0036] B1. Clamp the two ends of the telescopic rod to the two side rails respectively through fixed fasteners, and the ruler passing slot is located on the rail close to the impedance bond;

[0037] B2. Pull out the flexible ruler from the ruler passing slot and bend it so that the end of the flexible ruler abuts against the specified position on the side of the corresponding rail; read the reading L3 of the flexible ruler at the end of the telescopic rod far from the ruler passing slot; stretch and bend the flexible ruler again so that the end of the flexible ruler abuts against the specified position of the choke transformer; read the reading L4 of the flexible ruler at the ruler passing slot.

[0038] B3. Determine the theoretical length of the track connection line according to the sum of L3 and L4.

[0039] This solution provides one specific measurement method for the track connection line (rail lead wire). The rail lead wire includes a straight section and two bent sections at both ends of the straight section, and one of the bent sections is connected to the plug hole on the side of the rail, and the other bent section is connected to the choke transformer; and the flexible ruler of the track connection line length measuring device can only extend from one end of the telescopic rod. Therefore, if you want to measure the length of the rail lead wire, generally you need to first simulate and measure one of the bent sections with the flexible ruler, then turn the telescopic rod around, and then use the flexible ruler to separately simulate and measure the other bent section.

[0040] In this solution, the ruler passing slot is set towards the choke transformer from the beginning, and the two bent sections are respectively simulated by stretching and bending the flexible ruler twice, and the corresponding readings L3 and L4 are read; although the position of the bent section used to connect to the side of the rail is different from the actual position of the rail lead wire, considering the symmetry of the rail, the length of the bent section connected to the side of the rail is theoretically the same regardless of which side rail it is set on. Therefore, the sum of L3 and L4 still corresponds to the actual length of the rail lead wire, and there is no need to change the orientation of the telescopic rod to re-simulate and measure; that is, this solution omits the step of changing the orientation of the telescopic rod once, and the operation is more simple and fast.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] 1. The present invention provides a track connection line length measuring device, which can make the installation state of the combination of the telescopic rod and the flexible ruler match the theoretical installation state of the track connection line by adjusting the relative position of the telescopic rod to the rail, the length of the telescopic rod, the length of the flexible ruler, and the shape of the flexible ruler, so that the combination can accurately reflect the theoretical installation state of the track connection line from three dimensions of position, length, and shape. Therefore, when measuring the length of the combination at this time, the accurate theoretical installation length of the track connection line can be measured, providing a basis for the selection of the length of the subsequent cable, and avoiding the situation that the track connection line is too short to be installed, or the track connection line is too long, resulting in an increase in material costs and being easily damaged during later construction.

[0043] 2. The present invention provides a method for measuring the length of an orbital connecting line. By using an orbital connecting line length measuring device to simulate the theoretical installation state of the orbital connecting line, the telescopic rod and the flexible ruler can be respectively associated with the straight section and the curved section of the orbital connecting line from three dimensions of position, length, and shape. Furthermore, the accurate theoretical length of the orbital connecting line can be obtained through the lengths of the telescopic rod and the flexible ruler, which has the advantages of high measurement accuracy and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic side view of an orbital connecting line length measuring device according to the present invention;

[0045] Figure 2 is a schematic top view of an orbital connecting line length measuring device according to the present invention;

[0046] Figure 3 is a schematic side view of the connection state between an orbital connecting line length measuring device according to the present invention and a rail;

[0047] Figure 4 is a first partial enlarged schematic view of an orbital connecting line length measuring device according to the present invention at the ruler passing slot;

[0048] Figure 5 is a second partial enlarged schematic view of an orbital connecting line length measuring device according to the present invention at the ruler passing slot;

[0049] Figure 6 is a partial enlarged schematic view of an orbital connecting line length measuring device according to the present invention at the hollow housing;

[0050] Figure 7 is a wiring schematic diagram of the turnout jumper in Embodiment 2;

[0051] Figure 8 is a wiring schematic diagram of the rail lead wire on the far choke transformer side in Embodiment 2;

[0052] Figure 9 is a wiring schematic diagram of the rail lead wire on the near choke transformer side in Embodiment 2;

[0053] Figure 10 is a first working schematic diagram of a method for measuring the length of an orbital connecting line according to the present invention;

[0054] Figure 11 is a second working schematic diagram of a method for measuring the length of an orbital connecting line according to the present invention;

[0055] Figure 12 is a third working schematic diagram of a method for measuring the length of an orbital connecting line according to the present invention;

[0056] Icon:

[0057] 1 - Telescopic rod; 10 - Segment; 11 - Through - scale slot; 12 - Fixed claw; 13 - Movable claw;

[0058] 2 - Reel; 3 - Flexible ruler; 31 - Ruler hook;

[0059] 4 - Hollow housing; 41 - Observation window;

[0060] 5 - Track connection line; 51 - Straight segment; 52 - Curved segment;

[0061] 6 - Rail; 7 - Choke transformer. Detailed implementation mode

[0062] The present invention will be further described in detail below in combination with test examples and specific implementation modes. However, this should not be understood as limiting the scope of the above - mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0063] In the description of the specific embodiments of the present invention, without special explanation, the expression terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / equipment is usually placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be understood as a limitation to the present invention.

[0064] In addition, for terms such as "horizontal", "vertical", "vertical direction", "hanging", "parallel", etc., it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is set in the "horizontal", "vertical", "hanging", "parallel" and other directions, and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8% of the error / deviation, more preferably within ±6% of the error / deviation, more preferably within ±5% of the error / deviation, more preferably within ±4% of the error / deviation. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present invention.

[0065] In addition, the use of terms such as "first", "second", "third", etc. is merely for distinguishing the description of the same or similar components, and should not be construed as emphasizing or implying the relative importance of specific components.

[0066] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a number of" represent at least 2. It can be any case such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even more than 9.

[0067] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, where terms such as "set", "installed", "connected", "linked", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. Such a connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0068] Embodiment 1

[0069] As Figures 1 to 6 shown, a device for measuring the length of an orbital connection line includes a telescopic rod 1, a fixed fastener, and a flexible ruler 3.

[0070] The length of the telescopic rod 1 is adjustable; the two ends of the telescopic rod 1 along its length direction are respectively an A end and a B end. A winding drum 2 is rotatably connected to the A end of the telescopic rod 1, and the axis of the winding drum 2 is perpendicular to the length direction of the telescopic rod 1; a tension member is connected to the B end of the telescopic rod 1, and a through-ruler slot 11 is provided on the tension member, and the through-ruler slot 11 penetrates the tension member along the length direction of the telescopic rod 1.

[0071] The fixed fastener is used for connecting the steel rail 6 and includes a fixed claw 12 and a movable claw 13. The fixed claw 12 is fixed to the end of the telescopic rod 1, the movable claw 13 is movably connected to the telescopic rod 1, and the movable claw 13 can approach or move away from the fixed claw 12 along the length direction of the telescopic rod 1; two fixed fasteners are respectively provided at both ends (A end and B end) of the telescopic rod 1.

[0072] One end of the flexible ruler 3 is wound around the winding drum 2, and the other end of the flexible ruler 3 passes through the through-ruler slot 11.

[0073] In the above embodiment, the telescopic rod 1 can adopt existing products, such as a sleeve-type telescopic rod 1, a threaded telescopic rod 1, a pneumatic telescopic rod 1, a hydraulic telescopic rod 1, or an electric telescopic rod 1; for example Figure 4 and Figure 5As shown, the telescopic rod 1 includes at least two segments 10. The segment 10 is of a cylindrical structure, and two adjacent segments 10 are sleeved with each other, so that they can move away from or close to each other, and thus the overall length of the telescopic rod 1 can be changed.

[0074] In the above embodiment, the specific forms of the movable connection between the movable claw 13 and the telescopic rod 1 include but are not limited to: providing a through groove on the movable claw 13 with dimensions and shapes matching the cross-sectional dimensions and shapes of the telescopic rod 1, sleeving the movable claw 13 on the telescopic rod 1, so that the movable claw 13 can slide relative to the telescopic rod 1 along the length direction of the telescopic rod 1; providing a slide rail-slider mechanism or a lead screw mechanism between the movable claw 13 and the telescopic rod 1, and the length of the slide rail or the lead screw is arranged along the length direction of the telescopic rod 1.

[0075] In an alternative embodiment, as Figures 4 to 6 shown, the fixed claw 12 is an L-shaped member, including a vertical section and a horizontal section. One end of the vertical section is fixed to the telescopic rod 1, and the other end extends in a direction perpendicular to the axis of the telescopic rod 1; one end of the horizontal section is connected to the end of the vertical section far from the telescopic rod 1, and the other end extends in a direction parallel to the axis of the telescopic rod 1, so as to form an inverted "L" shape together with the vertical section to better bite the bottom of the rail 6 and achieve reliable fixation; correspondingly, the movable claw 13 is also an "L" shape including a vertical section and a horizontal section, and the horizontal section of the fixed claw 12 is arranged opposite to the horizontal section of the movable claw 13.

[0076] In the above embodiment, the tension member can be either a part of the B end of the telescopic rod 1 or an independent member connected to the telescopic rod 1; taking the case where the flexible ruler 3 passes through the inside of the hollow telescopic rod 1 as an example, as Figure 5 shown, the end plate of the B end of the telescopic rod 1 can be used as the tension member, and a through groove with dimensions and shapes matching the cross-sectional dimensions and shapes of the flexible ruler 3 is provided on the end plate as the ruler through groove 11; for the case where the flexible ruler 3 does not pass through the inside of the telescopic rod 1, a plate member or a block member can be additionally connected outside the telescopic rod 1 as the tension member, and a through groove with dimensions and shapes matching the cross-sectional dimensions and shapes of the flexible ruler 3 is provided on the plate member or the block member as the ruler through groove 11.

[0077] In the above embodiment, the specific structural forms of the flexible ruler 3 include but are not limited to a steel tape with scales, a plastic silicone ruler, a wire ruler, a rope ruler or a leather ruler, as long as it can Figure 5 be bent as shown to simulate the bent section 52 of the track connection line 5 and can indicate the length.

[0078] In an alternative embodiment, a hollow housing 4 is further provided at the A end of the telescopic rod 1, and the reel 2 is arranged inside the hollow housing 4.

[0079] In the above-described embodiment, a helical spring is connected between the drum 2 and the hollow housing 4. The axis of the helical spring is parallel to the axis of the drum 2 and is used to drive the drum 2 to rotate in the direction of retracting the flexible ruler 3.

[0080] In the above-described embodiment, as Figure 6 shown, an observation window 41 is provided on the hollow housing 4, and the position of the observation window 41 matches the position of the A end of the telescopic rod 1.

[0081] In the above-described embodiment, as Figure 4 and Figure 5 shown, the telescopic rod 1 is of a hollow structure, and the flexible ruler 3 passes through the inside of the telescopic rod 1 and exits the telescopic rod 1 through the ruler passing slot 11.

[0082] In an alternative embodiment, a ruler hook 31 is connected to the end of the flexible ruler 3 away from the drum 2. The ruler hook 31 can be an existing product, such as an L-shaped iron sheet used on a tape measure.

[0083] In an alternative embodiment, a magnet is provided on the ruler hook 31, such as an electromagnet or a permanent magnet.

[0084] Embodiment 2

[0085] As Figures 7 to 12 shown, a method for measuring the length of a track connection line is applied to a device for measuring the length of a track connection line in Embodiment 1 and includes the following steps:

[0086] S1. Fix the telescopic rod 1 relative to the steel rail 6 through a fixing fastener; for example, adjust the position of the movable claw 13 so that the distance between the movable claw 13 and the fixed claw 12 is greater than the width of the steel rail 6, then move the fixing fastener until the steel rail 6 is located between the movable claw 13 and the fixed claw 12, and then readjust the position of the movable claw 13 so that the distance between the movable claw 13 and the fixed claw 12 is reduced until the movable claw 13 and the fixed claw 12 clamp the steel rail 6.

[0087] S2. Adjust the length of the telescopic rod 1 so that the length and position of the telescopic rod 1 match the length and position of the straight section 51 of the track connection line 5; pull out the flexible ruler 3 from the ruler passing slot 11 and adjust the length and shape of the pulled-out part of the flexible ruler 3 so that the length and shape of the pulled-out part of the flexible ruler 3 match the length and shape of the curved section 52 of the track connection line 5.

[0088] S3. Determine the theoretical length of the track connection line 5 based on the length of the telescopic rod 1 and the length of the pulled-out part of the flexible ruler 3.

[0089] In an alternative embodiment, when the track connection line 5 is a turnout jumper as Figure 7 shown, the following steps are further included:

[0090] A1. As Figure 10As shown, both ends of the telescopic rod 1 are respectively clamped to the two side rails 6 through fixing fasteners.

[0091] A2. As Figure 10 shown, pull out the flexible ruler 3 from the ruler passing slot 11 and bend it upward roughly in a "C" shape. The specific shape and amplitude of the bend match the installation specifications of the track connection line 5 until the end of the flexible ruler 3 far from the reel 2 abuts against a specified position on the side of the corresponding side rail 6, such as at the nail hole; read the reading L1 of the flexible ruler 3 at the end (A end) of the telescopic rod 1 far from the ruler passing slot 11, and read the reading L2 of the flexible ruler 3 at the ruler passing slot 11 (B end).

[0092] A3. Determine the theoretical length of the track connection line 5 according to the sum of L1 and L2.

[0093] In an optional implementation manner, when the track connection line 5 is the rail lead wire on the side of the far choke transformer 7 as Figure 8 shown, the following steps are further included:

[0094] B1. As Figure 11 shown, both ends of the telescopic rod 1 are respectively clamped to the two side rails 6 through fixing fasteners, and the ruler passing slot 11 is located at the rail 6 close to the choke transformer 7, that is, the B end of the telescopic rod 1 is closer to the choke transformer 7 than the A end.

[0095] B2. As Figure 12 shown, pull out the flexible ruler 3 from the ruler passing slot 11 and bend it upward roughly in a "C" shape. The specific shape and amplitude of the bend match the installation specifications of the track connection line 5, so that the end of the flexible ruler 3 far from the reel 2 abuts against a specified position on the side of the corresponding side rail 6, such as at the nail hole; read the reading L3 of the flexible ruler 3 at the end (A end) of the telescopic rod 1 far from the ruler passing slot 11.

[0096] As Figure 11 shown, pull the flexible ruler 3 again in the direction close to the choke transformer 7 and bend it upward by about 90° under the choke transformer 7, so that the end of the flexible ruler 3 abuts against a specified position of the choke transformer 7, such as at the wiring hole; the specific shape and amplitude of the bend match the installation specifications of the track connection line 5; read the reading L4 of the flexible ruler 3 at the ruler passing slot 11 (B end).

[0097] It should be noted that the acquisition of L3 and L4 has no sequence. Either L3 can be acquired first and then L4, or vice versa, L4 can be acquired first and then L3.

[0098] B3. Determine the theoretical length of the track connection line 5 according to the sum of L3 and L4.

[0099] In an optional implementation manner, when the track connection line 5 is as Figure 9When referring to the rail connection wire on the 7th side of the near choke transformer as shown, the following steps are also included:

[0100] C1. As Figure 12 shown, the B end of the telescopic rod 1 is clamped to the rail 6 near the choke transformer 7 through the fixing fasteners, and the overscale through slot 11 faces the choke transformer 7; in this case, the A end of the telescopic rod 1 can be not fixed, but can also be fixed to the rail 6 on the other side to increase stability.

[0101] C2. As Figure 12 shown, pull out the flexible ruler 3 from the overscale through slot 11 and bend it upward approximately in a "C" shape. The specific shape and amplitude of the bend match the installation specifications of the track connection wire 5, so that the end of the flexible ruler 3 away from the reel 2 abuts against a specified position on the side of the corresponding rail 6, such as the plug hole; read the reading L5 of the flexible ruler 3 at the overscale through slot 11 (B end).

[0102] As Figure 11 shown, stretch the flexible ruler 3 again in the direction close to the choke transformer 7 and bend it upward by about 90° under the choke transformer 7, so that the end of the flexible ruler 3 abuts against a specified position of the choke transformer 7, such as the wiring hole; the specific shape and amplitude of the bend match the installation specifications of the track connection wire 5; read the reading L6 of the flexible ruler 3 at the overscale through slot 11 (B end).

[0103] It should be noted that the acquisition of L5 and L6 has no order. It can either acquire L5 first and then L6, or vice versa, acquire L6 first and then L5.

[0104] C3. Determine the theoretical length of the track connection wire 5 according to the sum of L5 and L6.

[0105] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A track connecting line length measuring device, characterized in that: include: A telescopic rod (1), the length of the telescopic rod (1) being adjustable; One end of the telescopic rod (1) is rotatably connected to a reel (2), and the axis of the reel (2) is perpendicular to the length direction of the telescopic rod (1); The other end of the telescopic rod (1) is connected to a tensioning member, and a ruler-passing slot (11) is provided on the tensioning member; a fixing fastener, two fixing fasteners are respectively provided at the two ends of the telescopic rod (1); the fixing fastener comprises a fixing claw (12) and a movable claw (13), the fixing claw (12) is fixed to the end of the telescopic rod (1), the movable claw (13) is movably connected to the telescopic rod (1), and the movable claw (13) can approach or move away from the fixing claw (12) along the length direction of the telescopic rod (1); a tape measure (3), one end of the tape measure (3) is wound around the reel (2), and the other end of the tape measure (3) passes through the ruler-passing slot (11).

2. A track connection line length measuring device according to claim 1, characterized in that: A hollow shell (4) is provided at one end of the telescopic rod (1) connected to the reel (2), and the reel (2) is arranged inside the hollow shell (4).

3. A track connection line length measuring device according to claim 2, characterized in that: A coil spring is connected between the reel (2) and the hollow shell (4), and the axis of the coil spring is parallel to the axis of the reel (2).

4. A track connection line length measuring device according to claim 2, characterized in that: The hollow shell (4) is provided with an observation window (41), and the position of the observation window (41) matches the end position of the telescopic rod (1).

5. A track connection line length measuring device according to any one of claims 1 to 4, characterized in that: The telescopic rod (1) is a hollow structure, and the tape measure (3) passes through the interior of the telescopic rod (1) and passes out of the telescopic rod (1) from the tape measure slot (11).

6. A track connection line length measuring device according to any one of claims 1 to 4, characterized in that: One end of the tape measure (3) away from the reel (2) is connected with a tape hook (31).

7. A track connection line length measuring device according to claim 6, characterized in that: The ruler hook (31) is provided with a magnet.

8. A method for measuring the length of a track connection line, characterized in that: A track connecting line length measuring device as claimed in any one of claims 1 to 7, comprising the following steps: The telescopic rod (1) is fixed relative to the steel rail (6) by means of a fixing fastener, and the length of the telescopic rod (1) is adjusted so that the length and position of the telescopic rod (1) match the length and position of the straight line segment (51) of the track connection line (5); Pulling the tape measure (3) out of the tape passing slot (11), adjusting the length and shape of the pulled-out portion of the tape measure (3) so that the length and shape of the pulled-out portion of the tape measure (3) match the length and shape of the curved section (52) of the track connecting line (5); The theoretical length of the track connection line (5) is determined according to the length of the telescopic rod (1) and the length of the pulled-out portion of the tape measure (3).

9. A method for measuring the length of a track connection line according to claim 8, characterized in that: When the track connection line (5) is a switch jumper line, the method further comprises the following steps: A1. Clamping the two ends of the telescopic rod (1) to the steel rails (6) on both sides respectively through the fixing fasteners; A2, pulling the tape measure (3) out of the tape measure slot (11) and bending it, so that the end of the tape measure (3) abuts against a designated position on the side of the corresponding side rail (6); reading L1 of the tape measure (3) at the end of the telescopic rod (1) away from the tape measure slot (11), and reading L2 of the tape measure (3) at the tape measure slot (11); A3. Determine the theoretical length of the track connection line (5) according to the sum of L1 and L2.

10. A method for measuring the length of a track connection line according to claim 8, characterized in that: When the track connection line (5) is a rail lead-in line (5) on the remote choke transformer (7) side, the following steps are also included: B1. The two ends of the telescopic rod (1) are respectively clamped to the steel rails (6) on both sides through the fixing fasteners, and the over-size through slot (11) is located at the steel rail (6) close to the choke transformer (7); B2, pulling the tape measure (3) out of the tape measure slot (11) and bending it, so that the end of the tape measure (3) abuts against a designated position on the side of the corresponding side rail (6); reading L3 of the tape measure (3) at the end of the telescopic rod (1) away from the tape measure slot (11); re-stretching and bending the tape measure (3), so that the end of the tape measure (3) abuts against a designated position of the choke transformer (7); reading L4 of the tape measure (3) at the tape measure slot (11); B3. Determine the theoretical length of the track connection line (5) based on the sum of L3 and L4.

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