Steel rail length measuring instrument

Abstract

The utility model relates to a steel rail length measuring instrument, and relates to the field of steel rail measuring tools, the steel rail length measuring instrument comprises a mounting plate, a rotating table, a swing rod, a laser range finder and a motor, the mounting plate is used for being fixed on the ground, the rotating table is rotatably connected to the mounting plate, and a rotating mechanism is used for driving the rotating table to rotate relative to the mounting plate; and a plurality of conveying rollers are arranged on one side of the mounting plate, and the conveying rollers are used for horizontally conveying the steel rails. The method has the effect of improving the efficiency of measuring the length of the steel rail.

Description

Technical Field

[0001] The present application relates to the field of rail measuring tools, and in particular to a rail length measuring instrument. Background Art

[0002] During the maintenance or processing of rails, the length of the rails needs to be detected. By measuring the length of the rails, the installation design of the rails can be planned and the subsequent rail grinding or cutting process can be arranged.

[0003] The existing rail length measurement is done manually using a tape measure. When measuring the rail, at least two people are required to fix both ends of the tape measure to complete the measurement. The user needs to ensure that the length direction of the tape measure is parallel to the length direction of the rail, so as to further improve the measurement accuracy.

[0004] The above-mentioned related technical solutions have the following defects: during the measurement process, at least two people are required to manually pull the ruler, the detection efficiency is low, and the manpower consumption is large. Utility Model Content

[0005] In order to improve the efficiency of measuring the length of a rail, the present application provides a rail length measuring instrument.

[0006] The present application provides a rail length measuring instrument that adopts the following technical solution:

[0007] A rail length measuring instrument comprises a mounting plate, a rotating table, a swing rod, a laser rangefinder and a motor. The mounting plate is used to be fixed on the ground, the rotating table is rotatably connected to the mounting plate, the motor is used to drive the rotating table to rotate relative to the mounting plate, one end of the swing rod is fixed on the rotating table, and the other end is connected to the laser rangefinder.

[0008] By adopting the above technical solution, a rotating table is arranged on the mounting plate, so that the rotating mechanism can drive the rotating table to rotate, and then the swing arm can rotate on one side of the conveyor roller. When the swing arm is parallel to the conveying direction of the rail conveyed by the conveyor roller, the laser rangefinder cannot detect the length of the rail. When the swing arm is rotated to be perpendicular to the rail, the laser rangefinder can emit laser vertically downward. When the end of the rail moves below the laser rangefinder, the laser rangefinder outputs an electrical signal. By recording the conveying speed of the conveyor roller and the time when the rail is located below the laser rangefinder, the length of the rail can be calculated, thereby achieving the effect of measuring the length of the rail. During the detection process, the conveyor roller can continue to convey the rail, thereby improving work efficiency.

[0009] Optionally, a straight slot is provided on the mounting plate, and the mounting plate is fixed by bolts.

[0010] By adopting the above technical solution, bolts are set on the mounting plate so that the mounting plate can be fixed to the ground by bolts. The user can adjust the spacing of the conveying rollers of the mounting plate by sliding the bolts in the straight groove, which makes it convenient for the laser rangefinder to detect rails of different widths.

[0011] Optionally, a rotating shaft is connected to the bottom of the rotating table, the rotating shaft is perpendicular to the rotating table, one end of the rotating shaft away from the rotating table is rotatably connected to the mounting plate, the motor housing is fixed on the mounting plate, and the output shaft of the motor is coaxially connected to the rotating shaft.

[0012] By adopting the above technical solution, a rotating shaft is arranged on the rotating table, so that the motor can drive the pendulum rod to rotate, and the user can control the rotating position of the pendulum rod through the motor, thereby improving the rotation accuracy of the pendulum rod.

[0013] Optionally, a frame is fixed on the mounting plate, and the rotating shaft is rotatably connected to the frame.

[0014] By adopting the above technical solution, a frame is set on the mounting plate so that the frame can support the rotating shaft, thereby reducing the stress on the motor output shaft, reducing the probability of deformation of the motor output shaft, and improving the detection accuracy.

[0015] Optionally, a controller is provided on the motor, and the controller controls the rotation of the motor.

[0016] By adopting the above technical solution, a controller is set on the motor so that the controller can automatically control the rotation of the motor, thereby achieving the effect of controlling the position of the pendulum, so that the pendulum can be accurately moved to a position perpendicular to the rail. When the laser rangefinder completes the measurement of the rail length, the laser rangefinder can output an electrical signal, and the controller receives the signal and records the rail length. At this time, the controller controls the pendulum to rotate and adjust it to a state parallel to the rail.

[0017] Optionally, a sensor is provided on the conveying roller, and the sensor is used to detect the position of the rail.

[0018] By adopting the above technical solution, by arranging a sensor on the conveying roller, the sensor is set as a gravity sensor or a photoelectric sensor, and the sensor can detect the position of the rail, so that the controller can control the rotation of the swing arm when the rail approaches the mounting plate.

[0019] Optionally, a plurality of horizontal calibration mechanisms are provided on the swing arm, and the horizontal calibration mechanisms are used to detect whether the swing arm is rotated to a position perpendicular to the rail.

[0020] By adopting the above technical solution, by arranging multiple horizontal calibration mechanisms on the pendulum rod, the horizontal calibration mechanisms can emit lasers horizontally, and the positions of the horizontal calibration mechanisms on two adjacent pendulum rods correspond. By emitting lasers, the spacing between the horizontal calibration mechanisms on adjacent pendulum rods can be detected, thereby facilitating users to check whether the position of the pendulum rod is perpendicular to the rail, thereby improving the detection accuracy.

[0021] In summary, the beneficial technical effects of this application are:

[0022] 1. By setting a rotating table on the mounting plate, the rotating mechanism can drive the rotating table to rotate, and then the swing arm can rotate on one side of the conveyor roller. When the swing arm is parallel to the conveying direction of the rails conveyed by the conveyor roller, the laser rangefinder cannot detect the length of the rails. When the swing arm rotates to be perpendicular to the rails, the laser rangefinder can emit lasers vertically downward. When the end of the rail moves below the laser rangefinder, the laser rangefinder outputs an electrical signal. By recording the conveying speed of the conveyor roller and the time when the rail is under the laser rangefinder, the length of the rail can be calculated, thereby achieving the effect of measuring the length of the rail. During the detection process, the conveyor roller can continue to convey the rails, thereby improving work efficiency.

[0023] 2. Bolts are set on the mounting plate so that the mounting plate can be fixed on the ground by bolts. Users can adjust the spacing of the conveying rollers of the mounting plate by sliding the bolts in the straight slots, so that the laser rangefinder can detect rails of different widths.

[0024] 3. By setting a controller on the motor, the controller can automatically control the rotation of the motor, thereby achieving the effect of controlling the position of the pendulum, so that the pendulum can be accurately moved to a position perpendicular to the rail. When the laser rangefinder completes the measurement of the rail length, the laser rangefinder can output an electrical signal, and the controller receives the signal and records the rail length. At this time, the controller controls the pendulum to rotate and adjust it to a state parallel to the rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the overall structure of Example 1 of the present application. Figure 2 .

[0027] Figure 3 It is a schematic diagram of the structure of the rotating mechanism of Example 1 of the present application.

[0028] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0029] Figure 5 This is the logic block diagram of Example 1 of the present application.

[0030] Figure numerals: 1. mounting plate; 11. waist hole; 12. bolt; 2. rotating table; 21. rotating shaft; 3. rocker arm; 4. laser rangefinder; 5. motor; 51. frame; 6. horizontal calibration mechanism; 7. conveyor roller; 71. cam; 8. controller; 9. sensor. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] The present application embodiment discloses a rail length measuring instrument, referring to Figure 1 and Figure 2 , including a mounting plate 1, a rotating table 2, a swing rod 3 and a laser rangefinder 4. The rotating table 2 is rotatably connected to the mounting plate 1, and the mounting plate 1 is fixed on the ground. One end of the swing rod 3 is fixed on the rotating table 2, and the other end is connected to the laser rangefinder 4. A conveying roller 7 is arranged on one side of the mounting plate 1. The conveying roller 7 is used to horizontally convey the rail. The swing rod 3 is arranged horizontally and located above the conveying roller 7. The laser rangefinder 4 emits a laser vertically downward on the swing rod 3. The laser can irradiate the upper surface of the rail on the conveying roller 7 and reflect. The laser rangefinder 4 determines the position of the rail head by receiving the reflected light. The rail length measuring instruments are arranged in pairs. The two rail length measuring instruments are respectively arranged on one side of the conveying roller 7 along the length direction. The two rail length measuring instruments are respectively arranged on both sides of the rail head and the rail tail of the rail. The two rail length measuring instruments cooperate to measure distance.

[0034] Reference Figure 2 , two mounting plates 1 are provided, and the two mounting plates 1 are spaced apart on one side of the conveying roller 7 along the length direction of the conveying roller 7. A rotating shaft 21 is connected to the bottom of the rotating table 2, and the rotating shaft 21 is perpendicular to the rotating table 2. The rotating shaft 21 is vertically provided on the mounting plate 1 and is rotatably connected to the mounting plate 1. A motor 5 is connected to the rotating shaft 21, and the output shaft of the motor 5 is coaxially connected to the rotating shaft 21, and the motor 5 drives the rotating shaft 21 to rotate. A frame 51 is provided on the mounting plate 1, and the rotating shaft 21 is rotatably connected to the frame 51, and the motor 5 is provided below the frame 51.

[0035] Reference Figure 3 The mounting plate 1 is provided with a plurality of waist holes 11, and the length direction of the waist holes 11 is parallel to the length direction of the conveying roller 7. Bolts 12 are arranged in the waist holes 11, and the user fixes the mounting plate 1 on the ground through the bolts 12. By sliding the bolts 12 in the waist holes 11 along a straight line, the user can adjust the distance between the mounting plate 1 and the conveying roller 7, which is convenient for the user to detect rails of different widths.

[0036] Reference Figure 3, the pendulum 3 is provided with a horizontal calibration mechanism 6, which is arranged at intervals along the length direction of the pendulum 3. When both pendulums 3 are rotated to a position parallel to the length direction of the conveying roller 7, the positions of the multiple horizontal calibration mechanisms 6 on each pendulum 3 correspond one to one. The horizontal calibration mechanism 6 is set as a laser distance sensor. The laser distance sensor on one pendulum 3 emits laser horizontally, and the laser distance sensor on the other pendulum 3 receives laser. When the pendulum 3 is rotated to be perpendicular to the rail, the horizontal calibration mechanisms 6 on the two pendulums 3 are aligned with each other and measure the distance. By comparing the distance detection data of multiple groups of horizontal calibration mechanisms 6, the user can determine whether the pendulum 3 is rotated to a state parallel to the conveying roller 7, thereby improving the detection accuracy.

[0037] Reference Figure 2 The conveying roller 7 is a plurality of horizontally arranged rollers, which are arranged at equal intervals along a straight line direction, and the conveying roller 7 is rotatably connected to the ground. A plurality of convex circles 71 are fixed on the conveying roller 7, which are arranged at intervals along the length direction of the conveying roller 7, and the convex circles 71 are arranged coaxially with the conveying roller 7. When the rail is conveyed to the conveying roller 7, the rail is located between two convex circles 71, and the convex circles 71 play a role of limiting and guiding, which can keep the rail on the conveying roller 7 in a state perpendicular to the conveying roller 7, thereby improving the accuracy of detecting the length of the rail.

[0038] Reference Figure 5 A controller 8 is provided on the motor 5, and a sensor 9 is connected to the input end of the controller 8. The sensor 9 can be a gravity sensor. The gravity sensor is installed at the connection between the shaft seat of the conveying roller 7 and the ground. When the rail moves onto the conveying roller 7, the rail applies pressure to the conveying roller 7, so that the gravity sensor outputs an electrical signal. The controller 8 can detect the position of the rail through the sensor 9. The output end of the controller 8 is electrically connected to the motor 5. The controller 8 can control the forward and reverse rotation of the motor 5, and then control the rotation of the swing arm 3.

[0039] The implementation principle of the embodiment of the present application is: by rotating the rotating table 2 connected on the mounting plate 1, the rotating table 2 can drive the rocker arm 3 to rotate, so that the rocker arm 3 can be rotated to above the conveying roller 7. At this time, the laser rangefinder 4 emits laser vertically downward, thereby recording the time when the rail is below the laser rangefinder 4, and the length of the rail can be measured by recording the transmission speed of the conveying roller 7.

[0040] Example 2

[0041] Reference Figure 4, the position of the swing rod 3 is higher than the conveying roller 7. When the swing rod 3 rotates to a position parallel to the length direction of the conveying roller 7, the swing rod 3 is located on the moving path of the rail, and the laser emission direction of the laser rangefinder 4 is horizontal. When the rail moves to the position between the two mounting plates 1 on the conveying roller 7, the swing rods 3 on the two mounting plates 1 rotate, so that the two swing rods 3 are moved to the outside of the rail ends respectively. At this time, the laser rangefinder 4 emits lasers toward the end face of the rail. After the two mounting plates 1 are fixed to the ground, the distance between them remains constant. The user can measure the length of the rail by recording the distances between the two swing rods 3 and the end of the rail respectively.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rail length measuring instrument, characterized in that: The invention comprises a mounting plate (1), a rotating platform (2), a swing rod (3), a laser rangefinder (4) and a motor (5), wherein the mounting plate (1) is used for fixing on the ground, the rotating platform (2) is rotatably connected to the mounting plate (1), the motor (5) is used for driving the rotating platform (2) to rotate relative to the mounting plate (1), and one end of the swing rod (3) is fixed on the rotating platform (2), and the other end is connected to the laser rangefinder (4).

2. A rail length measuring instrument according to claim 1, characterized in that: A straight slot is provided on the mounting plate (1), and the mounting plate (1) is fixed by means of bolts.

3. A rail length measuring instrument according to claim 1, characterized in that: A rotating shaft (21) is connected to the bottom of the rotating table (2), the rotating shaft (21) is perpendicular to the rotating table (2), one end of the rotating shaft (21) away from the rotating table (2) is rotatably connected to the mounting plate (1), the housing of the motor (5) is fixed on the mounting plate (1), and the output shaft of the motor (5) is coaxially connected to the rotating shaft (21).

4. A rail length measuring instrument according to claim 1, characterized in that: A frame (51) is fixed on the mounting plate (1), and the rotating shaft (21) is rotatably connected to the frame (51).

5. A rail length measuring instrument according to claim 1, characterized in that: The motor (5) is provided with a controller (8), and the controller (8) controls the rotation of the motor (5).

6. A rail length measuring instrument according to claim 5, characterized in that: A conveying roller (7) is provided on one side of the mounting plate (1), the conveying roller (7) is used to horizontally convey the rail, and a sensor (9) is provided on the conveying roller (7), the sensor (9) is used to detect the position of the rail.

7. A rail length measuring instrument according to claim 1, characterized in that: The swing rod (3) is provided with a plurality of horizontal calibration mechanisms (6), and the horizontal calibration mechanisms (6) are used to detect whether the swing rod (3) is rotated to a position vertical to the rail.

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