Wheel type red light early warning guide wheel device for rail flaw detector

Abstract

The application discloses a wheel type red light connection early warning guide wheel device for a rail flaw detector, which comprises a device main body, the device main body is used for detachable connection with a double-track rail flaw detector, two groups of symmetrical conductive rail running wheels are arranged on the device main body, the two groups of conductive rail running wheels are respectively corresponding to two rails of the double-track rail flaw detector, and the conductive rail running wheels are made of conductive materials. The wheel type red light connection early warning guide wheel device for the rail flaw detector utilizes the original track circuit of a railway, controls the on-off of switches to make the two-side rails short-circuit, triggers a signal system "red light belt", realizes automatic and real-time early warning of an operation position, does not need manual additional protection, and can flexibly control the start and stop of the red light connection function according to operation requirements, and has compact structure, strong adaptability and greatly improved safety and operation efficiency of rail flaw detection operation.

Description

Technical Field

[0001] This invention relates to the field of railway flaw detection safety protection technology, and in particular to a wheeled, interconnected, early warning guide wheel device for rail flaw detectors. Background Technology

[0002] Rail flaw detection is a core component of ensuring railway transportation safety. As a commonly used flaw detection device, the dual-rail flaw detector needs to be moved and operated on the railway line. During the operation, it is necessary to transmit the warning information of "construction ahead" to the dispatch center and subsequent trains to prevent trains from entering the work area and to ensure the personal safety of the flaw detection personnel.

[0003] Currently, early warning and protection for rail flaw detection operations mainly rely on manual setting of protective markers or manual reporting of the work location to the dispatch center. This method has significant drawbacks: First, the real-time performance of early warnings is poor. When the work location moves, the protective markers cannot keep up, and manual reporting is delayed, easily leading to untimely warnings. Second, the manual labor intensity is high, requiring additional protection personnel and increasing operating costs. Third, the flexibility is insufficient, as the protection status cannot be quickly adjusted according to changes in the working environment (such as temporary work stoppages or changes in work areas), posing significant safety hazards. In existing technologies, some railway auxiliary equipment uses conductive wheels to achieve circuit conduction. However, these wheels are mostly used only for inductive current conduction and do not integrate with the track circuit to achieve a continuous early warning function. Moreover, their conductive structure design is complex and costly, making them unsuitable for the operational requirements of dual-rail flaw detectors for rail flaw detection. Furthermore, existing elastic mechanisms are mostly used for complex displacement adjustments and cannot simply and efficiently achieve close contact between the conductive wheel and the rail, making it difficult to meet the requirements of frequent movement and maintaining stable conductivity during flaw detection operations. Therefore, we propose a wheel-type continuous early warning guide wheel device for rail flaw detectors. Summary of the Invention

[0004] The main objective of this invention is to provide a wheeled, interconnected, early warning guide wheel device for rail flaw detectors, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A wheeled, interconnected, early warning guide wheel device for a rail flaw detector includes a main body for detachable connection to a dual-rail rail flaw detector. The main body has two sets of symmetrically arranged conductive rail wheels, each corresponding to one of the two rails of the dual-rail system. These conductive rail wheels are made of conductive material to ensure conductive contact with the rails. The main body also has an elastic clamping mechanism connected to the conductive rail wheels, which applies an elastic force towards the rails to ensure tight contact between the conductive rail wheels and the rails. A conductive connection assembly is mounted on the main body, comprising a wire and a control switch. The two ends of the wire are electrically connected to the two sets of conductive rail wheels, and the control switch is connected in series with the wire to control the continuity of the wire, thereby controlling the conductive connection between the two sets of conductive rail wheels.

[0006] Preferably, the conductive track wheel includes a wheel body, a conductive ring, and a positioning pin. The wheel body is made of nylon, which is lightweight and wear-resistant. The conductive ring is embedded in the outer circumference of the wheel body to ensure conductive contact with the rail. The conductive ring and the wheel body are interference-fitted together by the positioning pin. The positioning pin is made of conductive material, with one end in contact with the conductive ring and the other end connected to a wire, thus achieving a reliable electrical connection between the conductive track wheel and the wire. The conductive ring is made of stainless steel, wear-resistant steel, or copper alloy, balancing conductivity and wear resistance to extend the service life of the device.

[0007] Preferably, the elastic pressing mechanism includes a fixed bracket, an elastic element, and a connecting shaft. The fixed bracket is fixedly connected to the main body of the device. One end of the connecting shaft is rotatably connected to the conductive rail wheel to ensure that the conductive rail wheel can roll smoothly on the rail. The other end slides through the fixed bracket. The elastic element is sleeved on the connecting shaft, and both ends of the elastic element abut against the limiting ends of the fixed bracket and the connecting shaft, respectively. The elastic element is a compression spring, which has a simple structure and low cost. The elastic force of the elastic element continuously pushes the conductive rail wheel to press against the rail. Even when there are slight undulations on the surface of the rail, it can ensure close contact between the conductive rail wheel and the rail, avoiding the interruption of conductivity.

[0008] Preferably, the control switch is a waterproof manual switch, suitable for the complex environment of railway outdoor operations, effectively preventing rain and dust from affecting the switch performance. The control switch is fixed on the outside of the main body of the device, and the operating end of the control switch is exposed, making it convenient for operators to operate at any time during operation, realizing the rapid start and stop of the red light function. The conductor uses high temperature resistant and wear-resistant copper core conductor, and the surface of the conductor is wrapped with an insulating protective layer to prevent conductor wear and short circuit, improving the safety and stability of the device. The electrical connection principle of the conductive connection component is as follows: the control switch is connected in series in the conductor, one end of the conductor is electrically connected to the positioning pin of the left conductive rail wheel, and the positioning pin is electrically connected to the conductive ring; the other end of the conductor is electrically connected to the positioning pin of the right conductive rail wheel, and the positioning pin is electrically connected to the conductive ring; the left conductive ring rolls and contacts the left rail, and the right conductive ring rolls and contacts the right rail; when the control switch is closed, the left and right rails form a short circuit loop through the conductive connection component, triggering the red light band of the track circuit.

[0009] Preferably, the main body of the device is provided with an adapter groove and a locking bolt. The adapter groove matches the installation position of the dual-rail flaw detector. The main body of the device is detachably fixed to the flaw detector by the locking bolt, which facilitates the installation, disassembly and maintenance of the device. At the same time, it can be adapted to different models of dual-rail flaw detectors, thus expanding the applicability of the device.

[0010] Preferably, the outer circumferential surface of the conductive track wheel is provided with an arc-shaped groove adapted to the rail head. The inner wall of the arc-shaped groove fits tightly with the rail head, which not only ensures the stability of the conductive contact, but also plays a guiding role, preventing the device from deviating when moving on the rail, and ensuring the smooth progress of the flaw detection operation.

[0011] Preferably, the elastic clamping mechanism further includes a position adjustment component, which comprises an adjusting nut and an adjusting screw. The adjusting screw is threadedly connected to the fixed bracket, and one end of the adjusting screw abuts against the end of the elastic element away from the connecting shaft. The adjusting nut is sleeved on the exposed end of the adjusting screw and threadedly engages with it. By rotating the adjusting nut, the adjusting screw can be moved axially, thereby squeezing or releasing the elastic element, adjusting the preload of the elastic element, and adjusting the contact pressure between the conductive rail roller and the rail. This adapts to rails with different wear levels and ensures stable conductivity.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) In this invention, the existing track circuit of the railway is used to make the two sets of conductive rail wheels conduct by closing the control switch, thereby short-circuiting the rails on both sides. The track circuit system will immediately identify the section of rail as "occupied by a car" and light up the red light strip on the control console of the dispatch center. It automatically and in real time conveys the warning information of "construction ahead" to the dispatch center and subsequent trains. There is no need for manual additional setting of protective signs or reporting, which greatly reduces the intensity of manual labor, avoids the delay and error of manual protection, and builds a reliable safety line for flaw detection personnel.

[0013] (2) In this invention, a waterproof manual control switch is provided. Operators can control the opening or closing of the red light function at any time according to the operation requirements. When the operation is temporarily stopped, the operation area is changed, or the operation is finished, the switch can be quickly disconnected to remove the red light warning. This allows for flexible response to different operation environments and avoids unnecessary impact on the normal operation of the railway. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a wheeled, red-light warning guide wheel device for a rail flaw detector according to the present invention; Figure 2 This is a schematic diagram of the conductive rail wheel of a wheeled early warning guide wheel device for a rail flaw detector according to the present invention; Figure 3 This is a schematic diagram of the elastic clamping mechanism of a wheel-type early warning guide wheel device for a rail flaw detector according to the present invention; Figure 4 This is a schematic diagram illustrating the electrical connection principle of the conductive connection component of a wheel-type early warning guide wheel device for a rail flaw detector according to the present invention.

[0015] In the diagram: 1-Main body of the device, 2-Conductive track wheel, 3-Elastic clamping mechanism, 4-Conductive connection assembly, 5-Adaptor groove, 6-Locking bolt, 7-Position adjustment assembly, 21-Wheel body, 22-Conductive ring, 23-Positioning pin, 31-Fixed bracket, 32-Elastic element, 33-Connecting shaft, 41-Wire, 42-Control switch, 71-Adjusting nut, 72-Adjusting screw. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1:

[0017] like Figure 1-4As shown, a wheeled, red-light warning guide wheel device for a rail flaw detector includes a main body 1. The main body 1 is made of aluminum alloy, which is lightweight and has high strength. The main body 1 is provided with an adapter groove 5 and a locking bolt 6. The adapter groove 5 matches the installation position of the rail flaw detector. The main body 1 is detachably fixed to the flaw detector by the locking bolt 6, which facilitates the installation, disassembly and maintenance of the device. At the same time, it can be adapted to different models of rail flaw detectors.

[0018] The main body 1 of the device is equipped with two sets of symmetrically arranged conductive rail wheels 2, which correspond to the two steel rails of the double rail. Each conductive rail wheel 2 includes a wheel body 21, a conductive ring 22, and a positioning pin 23. The wheel body 21 is made of nylon, which is lightweight and wear-resistant. The conductive ring 22 is embedded in the outer circumference of the wheel body 21 and is made of stainless steel, which combines conductivity and wear resistance. The conductive ring 22 and the wheel body 21 are press-fitted together by the positioning pin 23, which is made of copper alloy and has good conductivity. One end of the positioning pin 23 is in close contact with the conductive ring 22, and the other end extends into the interior of the wheel body 21 for connection with the wire 41, so as to realize a reliable electrical connection between the conductive rail wheel 2 and the wire 41. The outer circumference of the conductive rail wheel 2 is provided with an arc-shaped groove that matches the rail head. The inner wall of the arc-shaped groove fits tightly with the rail head, which not only ensures the stability of the conductive contact, but also plays a guiding role to prevent the device from deviating when moving on the rail.

[0019] The main body 1 of the device is also equipped with an elastic pressing mechanism 3 corresponding to the conductive rail wheels 2. The elastic pressing mechanism 3 includes a fixed bracket 31, an elastic element 32, and a connecting shaft 33. The fixed bracket 31 is fixedly connected to the main body 1 of the device by bolts. One end of the connecting shaft 33 is rotatably connected to the conductive rail wheels 2 through a bearing to ensure that the conductive rail wheels 2 can roll smoothly on the rail. The other end of the connecting shaft 33 slides through the fixed bracket 31. The limiting end of the connecting shaft 33 is provided with a stop to prevent the connecting shaft 33 from falling off the fixed bracket 31. The elastic element 32 is a compression spring, which is sleeved on the connecting shaft 33. Both ends of the elastic element 32 abut against the inner side wall of the fixed bracket 31 and the stop of the connecting shaft 33, respectively. Through the elastic force of the elastic element 32, the conductive rail wheels 2 are continuously pushed and pressed against the rail. Even when there are slight undulations on the surface of the rail, the conductive rail wheels 2 can be kept in close contact with the rail to avoid the interruption of conductivity.

[0020] The elastic clamping mechanism 3 is also equipped with a position adjustment component 7, which includes an adjusting nut 71 and an adjusting screw 72. The adjusting screw 72 passes horizontally through the fixed bracket 31 and is threadedly connected to the fixed bracket 31. One end of the adjusting screw 72 extends into the fixed bracket 31 and abuts against the end of the elastic element 32 away from the connecting shaft 33. The adjusting nut 71 is sleeved on the exposed end of the adjusting screw 72 and is threadedly engaged with the adjusting screw 72. By rotating the adjusting nut 71, the operator can drive the adjusting screw 72 to move axially, thereby squeezing or releasing the elastic element 32, adjusting the preload of the elastic element 32, and ultimately adjusting the contact pressure between the conductive rail roller 2 and the rail, adapting to rails with different wear levels, and ensuring stable conductivity.

[0021] The main body 1 of the device is equipped with a conductive connection component 4, which includes a wire 41 and a control switch 42. The wire 41 is a high-temperature resistant and wear-resistant copper core wire with an insulating protective layer wrapped on its surface. The two ends of the wire 41 are electrically connected to the positioning pins 23 of the two sets of conductive rail wheels 2 respectively. The control switch 42 is a waterproof manual switch, which is fixed on the outside of the main body 1 of the device. The operating end of the control switch 42 is exposed, which is convenient for operators to operate at any time. The control switch 42 is connected in series with the wire 41 to control the conduction and disconnection of the wire 41, thereby controlling the conductive connection state between the two sets of conductive rail wheels 2.

[0022] The working process of this embodiment is as follows: Before operation, the main body 1 of the device is installed on the dual-rail flaw detector via the adapter slot 5 and locking bolt 6. The adjusting nut 71 is rotated to adjust the preload of the elastic element 32, so that the conductive rail wheel 2 is in close contact with the rail. During operation, the flaw detector personnel close the control switch 42, the wire 41 is connected, and the two sets of conductive rail wheels 2 form a conductive circuit through the wire 41, thereby short-circuiting the two rails of the dual rail. The railway track circuit system recognizes that the rail section is "occupied by a train" and immediately lights up the red light strip on the dispatch center control console, automatically and in real time conveying the warning information "construction is underway ahead" to the dispatch center and subsequent trains. When it is necessary to temporarily stop the operation, switch the operation area, or when the operation is completed, the flaw detector personnel disconnect the control switch 42, the wire 41 is disconnected, the conductive circuit between the two sets of conductive rail wheels 2 is cut off, the rail short-circuit state is released, the red light strip on the dispatch center control console goes out, and the warning is lifted.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A wheel-type induction warning guide wheel device for a rail flaw detector, characterized in that: The device includes a main body (1), which is detachably connected to a dual-rail flaw detector for rail flaw detection. The main body (1) has two sets of symmetrically arranged conductive rail wheels (2), each set corresponding to one of the two rails of the dual-rail system. The conductive rail wheels (2) are made of conductive material and can form conductive contact with the rails. The main body (1) also has an elastic clamping mechanism (3), which is connected to the conductive rail wheels (2) and used to press the conductive rail wheels towards the conductive rails. The wheel (2) applies an elastic force toward the rail to ensure that the conductive rail wheel (2) is in close contact with the rail; the main body (1) of the device is equipped with a conductive connection assembly (4), which includes a wire (41) and a control switch (42). The two ends of the wire (41) are electrically connected to the two sets of conductive rail wheels (2) respectively. The control switch (42) is connected in series with the wire (41) to control the conduction and disconnection of the wire (41), thereby controlling the conductive connection state between the two sets of conductive rail wheels (2).

2. The wheeled, interconnected, early warning guide wheel device for a rail flaw detector according to claim 1, characterized in that: The conductive track wheel (2) includes a wheel body (21), a conductive ring (22), and a positioning pin (23). The wheel body (21) is made of nylon. The conductive ring (22) is embedded in the outer circumference of the wheel body (21). The conductive ring (22) and the wheel body (21) are press-fitted together by the positioning pin (23). The positioning pin (23) is made of conductive material. One end of the positioning pin (23) is in contact with the conductive ring (22), and the other end is connected to the wire (41) to realize the electrical connection between the conductive track wheel (2) and the wire (41). The conductive ring (22) is one of stainless steel, wear-resistant steel, or copper alloy.

3. The wheeled, interconnected, early warning guide wheel device for a rail flaw detector according to claim 1, characterized in that: The elastic pressing mechanism (3) includes a fixed bracket (31), an elastic element (32), and a connecting shaft (33). The fixed bracket (31) is fixedly connected to the main body (1) of the device. One end of the connecting shaft (33) is rotatably connected to the conductive rail wheel (2), and the other end slides through the fixed bracket (31). The elastic element (32) is sleeved on the connecting shaft (33), and both ends of the elastic element (32) abut against the limiting ends of the fixed bracket (31) and the connecting shaft (33), respectively. The elastic element (32) is a compression spring. The elastic force of the elastic element (32) pushes the conductive rail wheel (2) to press towards the rail.

4. The wheel-type early warning guide wheel device for a rail flaw detector according to claim 1, characterized in that: The control switch (42) is a waterproof manual switch. The control switch (42) is fixed on the outside of the main body (1) of the device, and the operating end of the control switch (42) is exposed, which makes it convenient for operators to operate at any time. The wire (41) is made of high temperature resistant and wear resistant copper core wire. The surface of the wire (41) is wrapped with an insulating protective layer to prevent the wire (41) from being worn or short-circuited.

5. The wheel-type early warning guide wheel device for a rail flaw detector according to claim 1, characterized in that: The main body (1) of the device is provided with an adapter groove (5) and a locking bolt (6). The adapter groove (5) matches the installation position of the double rail flaw detector. The main body (1) of the device is detachably fixed to the flaw detector by the locking bolt (6), which facilitates the installation, disassembly and maintenance of the device.

6. The wheel-type early warning guide wheel device for a rail flaw detector according to claim 1, characterized in that: The outer circumferential surface of the conductive track wheel (2) is provided with an arc-shaped groove that is adapted to the rail head. The inner wall of the arc-shaped groove is in close contact with the rail head, which not only ensures the stability of the conductive contact, but also plays a guiding role to prevent the device from deviating on the rail.

7. The wheeled, interconnected, early warning guide wheel device for a rail flaw detector according to claim 3, characterized in that: The elastic clamping mechanism (3) is also provided with a position adjustment component (7). The position adjustment component (7) includes an adjustment nut (71) and an adjustment screw (72). The adjustment screw (72) is threadedly connected to the fixed bracket (31), and one end of the adjustment screw (72) abuts against the end of the elastic element (32) away from the connecting shaft (33). The adjustment nut (71) is sleeved on the exposed end of the adjustment screw (72). By rotating the adjustment nut (71), the preload of the elastic element (32) can be adjusted, thereby adjusting the contact pressure between the conductive rail wheel (2) and the rail.

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