Current detector retracting and releasing mechanism for detecting steel rail
By designing a retraction mechanism, the problem of inconvenient operation of the current detector on the rail flaw detection vehicle was solved, enabling convenient deployment and retraction, ensuring the stability of attitude and position, and improving detection efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-27
AI Technical Summary
The current detectors on existing rail flaw detection vehicles are inconvenient to operate during inspection and retrieval, and it is difficult to maintain a stable posture and position, which affects the inspection efficiency.
A retraction mechanism was designed, including a base shell, a telescopic positioning pin, a front connecting rod, a rear connecting rod, a detector mounting box, and a hinge shaft. The hinge shaft enables convenient deployment and retraction of the current detector, and the positioning pin locks the posture to ensure the alignment of the detector with the rail and the levitation height.
This technology enables convenient deployment and retraction of the current detector during testing, ensuring stability of its posture and position, meeting testing requirements, and improving testing efficiency.
Smart Images
Figure CN224045186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the special equipment of walking on the rail track, detects the special equipment of rail current condition. BACKGROUND
[0002] Rail flaw detection car is widely used for detecting the steel rail used in existing ordinary railway, high-speed railway, urban subway or light rail. When track current detection is needed, the longitudinal center line of the current probe is required to be opposite to the transverse center line of the rail and to be parallel to the top surface of the rail within a limited height. When track current detection is not needed, the current probe should be retracted. The current probe retraction mechanism is designed to conveniently release the current probe and maintain its posture and position when the rail flaw detection car needs to detect the rail current. SUMMARY
[0003] The utility model discloses a rail flaw detection car is equipped with the function of detecting the rail current, and proposes a retraction mechanism based on stable current probe posture and position. The current probe can be conveniently released when detection is needed, which meets the state requirements of rail detection. After the work is completed, the current probe can be conveniently retracted.
[0004] The specific technical scheme of the utility model is as follows:
[0005] The retraction mechanism comprises:
[0006] The base shell has a cavity, a plurality of mounting holes are symmetrically formed on the two sides of the base shell, the top of the front connecting rod and the rear connecting rod is provided with a through hole matched with the mounting hole of the base shell, and the two are hinged on the front and rear hole positions on the two sides of the base shell through a hinge shaft, and can rotate radially with the hinge shaft as the central axis; the cavity of the base shell is used to accommodate the front connecting rod and the rear connecting rod after rotation;
[0007] The probe mounting box has a cavity for placing the current probe; a plurality of mounting holes are symmetrically formed on the two sides of the probe mounting box, the bottom of the front connecting rod and the rear connecting rod is provided with a through hole matched with the mounting hole of the probe mounting box, and the two are hinged on the front and rear hole positions on the two sides of the probe mounting box through a hinge shaft, and can rotate radially with the hinge shaft as the central axis;
[0008] The telescopic positioning pin is arranged at the bottom of the two sides of the base shell, the retracting locking holes are arranged at the top of the two sides of the detector mounting box, the position of the telescopic positioning pin matches the retracting locking hole when the front connecting rod and the rear connecting rod are stored in the base shell, and the telescopic positioning pin is in the extended state to realize the clamping fixation of the detector mounting box.
[0009] Preferably, the current detector is placed in the cavity of the detector mounting box, and the detector cover is blocked on the current detector and is fastened with the detector mounting box.
[0010] Preferably, the top of the base shell is fastened below the fixing member.
[0011] Preferably, the cavity of the base shell is wider than the width of the front connecting rod and the rear connecting rod, and the front connecting rod and the rear connecting rod are arranged on the inner side of the base shell.
[0012] Preferably, the width of the front connecting rod and the rear connecting rod is greater than the width of the detector mounting box, and the front connecting rod and the rear connecting rod are arranged on the outer side of the detector mounting box.
[0013] Preferably, the specified angle is that the front connecting rod is perpendicular to the base shell.
[0014] The current detector can be conveniently stored and released.
[0015] 1, the current detector can be conveniently stored and released;
[0016] 2, the current detector can be constrained during operation, and the required posture and position requirement during detection can be maintained. DRAWINGS
[0017] Figure 1 is an explosion view of the current detector storage and release mechanism.
[0018] Figure 2 is a top view of the current detector storage and release mechanism.
[0019] Figure 3 is a storage state schematic view of the current detector storage and release mechanism.
[0020] Figure 4 is a release state schematic view of the current detector storage and release mechanism. DETAILED DESCRIPTION
[0021] The current detector can be conveniently stored and released.
[0022] For example, Figure 1 andFigure 2 The current detector retraction mechanism used on a rail flaw detection vehicle mainly comprises a base shell 1, a telescopic positioning pin 2, a front connecting rod 3, a rear connecting rod 4, a detector mounting box 5, a hinged shaft 6, a detector 7, a detector cover 8 and a fixing member 9.
[0023] The fixing member can fix the base shell on the flaw detection vehicle frame. One end of each of the front connecting rod and the rear connecting rod is installed in the corresponding two hinged holes of the base shell through the hinged shaft, and the other end of each of the front connecting rod and the rear connecting rod is installed in the two hinged holes of the detector mounting box. The detector mounting box connected by the two connecting rods can rotate relative to the base shell and keep a fixed posture.
[0024] When the detector mounting box is turned above the rail, the mechanism is in a released state, the current detector detection surface is parallelly suspended at a limited height above the rail top surface, and the longitudinal center line of the detector is opposite to the transverse center line of the rail. Then the positioning pin is extended and inserted into the locking hole of the front connecting rod to lock the mechanism, that is, the front connecting rod, the rear connecting rod and the detector mounting box on the mechanism are stationary relative to the base shell, thereby ensuring that the current detector detects the current of the rail.
[0025] When the detector mounting box is turned into the base shell, the current detector is protected and the volume of the mechanism is minimized. Then the positioning pin is extended and inserted into the locking hole of the detector mounting box to lock the mechanism.
[0026] The upper base shell has three pairs of mounting hole positions, which are a pair of front connecting rod hinged holes, a pair of rear connecting rod hinged holes and a pair of telescopic positioning pin mounting holes.
[0027] The front connecting rod has three pairs of mounting hole positions, which are a pair of hinged holes at each end of the connecting rod and a pair of telescopic positioning pin locking holes.
[0028] The rear connecting rod has two pairs of mounting hole positions, which are a pair of hinged holes at each end of the connecting rod.
[0029] The detector mounting box has three pairs of mounting hole positions, which are a pair of front connecting rod hinged holes, a pair of rear connecting rod hinged holes and a pair of telescopic positioning pin locking holes.
[0030] The telescopic positioning pin is fastened on the base shell. When the telescopic positioning pin is retracted, the front connecting rod and the rear connecting rod can rotate the detector mounting box. When the telescopic positioning pin is extended and inserted into the locking hole of the detector mounting box to lock the mechanism, the mechanism is in a retracted state as shown in Figure 3 . When the telescopic positioning pin is extended and inserted into the locking hole of the front connecting rod to lock the mechanism, the mechanism is in a released state as shown in Figure 4 .
[0031] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.
Claims
1. A current detector take-up and take-up mechanism for detecting rail current, characterized in that... The retractable mechanism comprises: The base shell (1) has a cavity, a plurality of mounting holes are symmetrically opened on both sides of the base shell (1), the top of the front connecting rod (3) and the rear connecting rod (4) is provided with through holes matched with the mounting holes of the base shell (1), and the front connecting rod (3) and the rear connecting rod (4) are hingedly connected on the front and rear hole positions on both sides of the base shell (1) through the hinge shaft (6), and can rotate radially with the hinge shaft (6) as the central axis; the cavity of the base shell (1) is used for accommodating the front connecting rod (3) and the rear connecting rod (4) after rotation; The detector mounting box (5) has a cavity for placing the current detector (7); a plurality of mounting holes are symmetrically opened on both sides of the detector mounting box (5), and the bottom of the front connecting rod (3) and the rear connecting rod (4) is provided with through holes matched with the mounting holes of the detector mounting box (5); the front connecting rod (3) and the rear connecting rod (4) are hingedly connected on the front and rear hole positions on both sides of the detector mounting box (5) through the hinge shaft (6), and can rotate radially with the hinge shaft (6) as the central axis; The telescopic positioning pin (2) is arranged at the bottom of both sides of the base shell (1), the top of both sides of the detector mounting box (5) is provided with a retracting locking hole, when the front connecting rod (3) and the rear connecting rod (4) are accommodated in the base shell (1), the position of the telescopic positioning pin (2) matches the retracting locking hole, and the telescopic positioning pin (2) is in the extended state to realize the dead fixation of the detector mounting box (5); the top of both sides of the front connecting rod (3) is provided with a releasing locking hole, when the front connecting rod (3) and the rear connecting rod (4) are released outside the base shell (1) and at a specified angle, the position of the telescopic positioning pin (2) matches the releasing locking hole, and the telescopic positioning pin (2) is in the extended state to realize the releasing fixation of the detector mounting box (5).
2. The detecting mechanism for the current probe retraction mechanism for steel rails according to claim 1, characterized in that It also includes a detector cover (8), the current detector (7) is placed in the cavity of the detector mounting box (5), and the detector cover (8) is blocked on the current detector (7) and is fastened with the detector mounting box (5).
3. The detecting mechanism for the current probe for steel rail according to claim 1, characterized in that It also includes a fixing member (9), and the top of the base shell (1) is fastened below the fixing member (9).
4. The retractor mechanism for a current probe for a steel rail according to claim 1, characterized by The cavity of the base shell (1) is wider than the width of the front connecting rod (3) and the rear connecting rod (4), and the front connecting rod (3) and the rear connecting rod (4) are arranged on the inner side of the base shell (1).
5. The retractor mechanism for a current probe for a steel rail according to claim 1, characterized by The width of the front connecting rod (3) and the rear connecting rod (4) is greater than the width of the detector mounting box (5), and the front connecting rod (3) and the rear connecting rod (4) are arranged on the outer side of the detector mounting box (5).
6. The retractor mechanism for a current probe for a steel rail according to claim 1, characterized by The specified angle is that the front connecting rod (3) is perpendicular to the base shell (1).