Intelligent inspection trolley for overhead line system

Abstract

The utility model discloses an intelligent inspection trolley of contact net, including intermediate body, first connecting body and second connecting body, and first connecting body and second connecting body are fixed respectively in the both sides of intermediate body. Be equipped with first camera unit on the first connecting body, and the bottom front and back sides are equipped with driving wheel and driven wheel respectively, and the bottom is rotatably connected with first auxiliary wheel one side close to second connecting body, be equipped with second camera unit on second connecting body, and the bottom swing joint mounting bracket, and there is side wheel on mounting bracket, and a plurality of second auxiliary wheel are rotatably connected on wheel group frame. The spring telescopic link and displacement sensor are equipped between mounting bracket and intermediate body. First auxiliary wheel and second auxiliary wheel distribute in both sides, and the lateral clamping is formed through the elastic force of spring telescopic link, can adapt to straight line, curve, ramp and so on different scene, ensure that trolley always along the track centerline steady travel, effectively avoid derailment, and then guarantee the shooting quality of first, second camera unit to contact net.

Description

Technical Field

[0001] This utility model belongs to the field of railway inspection technology, specifically a smart inspection trolley for overhead contact lines. Background Technology

[0002] As the core facility for train power transmission, the overhead contact system of electrified railways directly affects railway transportation safety. With the large-scale construction of high-speed rail lines and the increase in train operation density, traditional manual inspection methods, which can only cover 5-10 kilometers of track per day, can no longer meet the needs of efficient operation and maintenance. In recent years, intelligent inspection vehicles based on track movement have become the mainstream solution in the industry. By being equipped with camera units, sensors, and other equipment, they can achieve automated detection of contact system geometric parameters and component defects.

[0003] However, existing inspection equipment generally suffers from insufficient track adaptability. In scenarios involving curves, slopes, or localized track deformation, the trolley is prone to deviation or derailment due to uneven lateral support, leading to missing inspection data or blurred images, directly impacting defect identification accuracy. For example, some equipment relies solely on a single guide wheel, exhibiting significant sideslip when track gauge fluctuations exceed ±5mm, requiring frequent manual intervention and severely limiting inspection efficiency. The poor stability of such inspection trolleys on the track results in poor image quality, affecting inspection results.

[0004] Patent application CN202421402423.1 discloses a foldable high-precision contact wire measurement vehicle device. Its movement module includes a first side wheel module and a second side wheel module. The first side wheel module is mounted on the outside of a first crossbeam, and the second side wheel module is mounted on the outside of a second crossbeam. Devices with this structure are prone to sideslip when turning, resulting in poor image quality and affecting the detection results. Utility Model Content

[0005] The purpose of this utility model is to provide an intelligent inspection vehicle for overhead contact lines to solve the following technical problems mentioned in the background art:

[0006] Traditional inspection trolleys have poor stability when moving on the track, resulting in poor image quality and affecting the inspection results.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A smart overhead contact line inspection trolley includes an intermediate body, a first connecting body, and a second connecting body. The first connecting body and the second connecting body are fixedly connected to both sides of the intermediate body. A first camera unit is provided on the first connecting body, and a second camera unit is provided on the second connecting body. A drive wheel and a driven wheel are respectively provided on the front and rear sides of the bottom of the first connecting body, wherein the drive wheel is connected to a drive motor. A first auxiliary wheel is rotatably connected to the bottom of the first connecting body near the second connecting body. A mounting frame is movably connected to the bottom of the second connecting body, and a side wheel is rotatably connected to the mounting frame. A wheel assembly frame is fixedly connected to the mounting frame near the first connecting body, and a plurality of second auxiliary wheels are rotatably connected to the wheel assembly frame. A spring telescopic rod and a displacement sensor are also provided between the mounting frame and the intermediate body. The two ends of the spring telescopic rod are respectively connected to the intermediate body and the mounting frame, and the two ends of the displacement sensor are respectively connected to the intermediate body and the mounting frame.

[0009] Furthermore, a push rod is fixed to one side of the middle part of the intermediate body, and a display screen is connected to the top of the push rod.

[0010] Furthermore, the first camera unit includes a first industrial camera and a first fill light; the second camera unit includes a second industrial camera and a second fill light.

[0011] Furthermore, a first handle is fixedly connected to the side of the first connector away from the second connector; a second handle is fixedly connected to the side of the second connector away from the first connector.

[0012] Furthermore, a guide rail is provided at the bottom of the second connector, and the top of the mounting bracket is slidably connected to the guide rail.

[0013] Furthermore, the spring telescopic rod includes an inner rod, an outer cylinder, and a spring; one end of the inner rod is connected to the intermediate body, and the other end is slidably connected inside the outer cylinder; the spring is set inside the outer cylinder, with one end of the spring connected to the inner rod and the other end connected to the outer cylinder; the outer cylinder is connected to the mounting bracket.

[0014] Furthermore, several second auxiliary wheels are arranged in an arc shape on the wheel set frame.

[0015] Furthermore, both the first camera unit and the second camera unit are covered with transparent protective covers. The transparent protective covers are detachably connected to the first connector and the second connector by bolts, and a waterproof sealing ring is provided on the inner edge of the protective covers.

[0016] Furthermore, the intermediate unit is equipped with a control module and a wireless transmission module. The control module is electrically connected to the drive motor, the first camera unit, the second camera unit, and the displacement sensor, respectively. The wireless transmission module is electrically connected to the control module and is used to communicate with a remote terminal.

[0017] Furthermore, a storage battery is also provided on the intermediate body, and the storage battery is electrically connected to the drive motor, control module, first camera unit, second camera unit and displacement sensor respectively.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In this invention, the first auxiliary wheel and the second auxiliary wheel are distributed on both sides, and the elastic force of the spring telescopic rod forms a lateral clamp, ensuring that the trolley always travels stably along the center line of the track in scenarios such as straight lines, curves, and slopes, avoiding derailment, and thus ensuring the shooting quality of the contact wire by the first and second camera units. Attached Figure Description

[0020] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0021] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0022] Figure 3 This describes the structure of the mounting bracket portion of this utility model;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of part A;

[0024] Figure 5 This is a schematic diagram of the structure of the first camera unit of this utility model.

[0025] The diagram is labeled as follows: 1-First connecting body, 2-Intermediate body, 3-Push rod, 4-Second connecting body, 5-Second camera unit, 6-Control module, 7-Wireless transmission module, 8-Display screen, 9-First camera unit, 10-First handle, 11-Drive wheel, 12-Drive motor, 13-Driven wheel, 14-First auxiliary wheel, 15-Spring telescopic rod, 16-Wheel frame, 17-Second auxiliary wheel, 18-Side wheel, 19-Mounting bracket, 20-Second handle, 21-Displacement sensor, 22-Guide rail, 23-First supplementary light, 24-First industrial camera. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] A smart inspection vehicle for overhead contact lines, such as Figure 1As shown, it includes an intermediate body 2, a first connecting body 1, and a second connecting body 4; the first connecting body 1 and the second connecting body 4 are fixed to both sides of the intermediate body 2; a first camera unit 9 is provided on the first connecting body 1, and a second camera unit 5 is provided on the second connecting body 4; a driving wheel 11 and a driven wheel 13 are respectively provided on the front and rear sides of the bottom of the first connecting body 1, wherein, as shown... Figure 2 As shown, the drive wheel 11 is connected to the drive motor 12; the bottom of the first connecting body 1 is rotatably connected to the side of the second connecting body 4; the bottom of the second connecting body 4 is movably connected to the mounting frame 19, the side wheel 18 is rotatably connected to the mounting frame 19, the side of the mounting frame 19 is fixed to the wheel assembly frame 16 near the first connecting body 1, and several second auxiliary wheels 17 are rotatably connected to the wheel assembly frame 16; a spring telescopic rod 15 and a displacement sensor 21 are also provided between the mounting frame 19 and the intermediate body 2, the two ends of the spring telescopic rod 15 are respectively connected to the intermediate body 2 and the mounting frame 19, and the two ends of the displacement sensor 21 are respectively connected to the intermediate body 2 and the mounting frame 19.

[0029] In this design, the driving wheel 11 at the bottom of the first connecting body 1 is powered by the drive motor 12, directly contacting and rotating the top surface of the track, driving the entire vehicle to move along the track. The driven wheel 13 is located on the top surface of the track along the same surface as the driving wheel 11, assisting in supporting the weight of the vehicle and balancing the direction of travel to prevent the vehicle from tilting. The first auxiliary wheel 14 contacts the side of the track, rolling and adhering to the side of the track to limit the lateral deviation of the vehicle, while also assisting in lateral guidance during steering. The mounting bracket 19 at the bottom of the second connecting body 4 is connected to the intermediate body 2 via a spring telescopic rod 15. The side wheel 18 on the bracket contacts the top surface of the track, and the second auxiliary wheel 17 contacts the side of the track, forming a stable support structure. When the track is slightly deformed, encounters a turn, a joint protrusion, or experiences vibration during travel, the spring telescopic rod 15 automatically extends and retracts through elastic deformation, causing the mounting bracket 19 to swing slightly, ensuring that the second auxiliary wheel 17 always adheres to the side of the track. At the same time, the displacement sensor 21 detects the relative displacement between the mounting bracket 19 and the intermediate body 2 in real time and feeds the data back to the control system, triggering deceleration. The first camera unit 9 of the first connecting body 1 and the second camera unit 5 of the second connecting body 4 respectively capture images of the overhead contact line from both sides of the track, covering the front, sides, and connection points of the contact line to reduce blind spots. The collected image data is transmitted to the on-board processor in real time, and the image recognition algorithm automatically identifies problems such as wear, deformation, and loose parts of the contact line, while storing the raw data for background verification.

[0030] In this invention, the first auxiliary wheel 14 and the second auxiliary wheel 17 are distributed on both sides and form a lateral clamping force through the elastic force of the spring telescopic rod 15, ensuring that the trolley always travels stably along the center line of the track in scenarios such as straight lines, curves, and slopes, avoiding derailment and ensuring the quality of the contact wire photography.

[0031] In a preferred embodiment, such as Figure 1 As shown, a push rod 3 is fixed to one side of the middle part of the intermediate body 2, and a display screen 8 is connected to the top of the push rod 3. The display screen 8 on the top of the push rod 3 can display the contact network image collected by the camera unit in real time, which makes it convenient for the inspection personnel to intuitively monitor the inspection status when following the trolley on the ground; the push rod 3 provides a gripping fulcrum for the personnel, and can push the trolley to move when the trolley needs manual adjustment.

[0032] In a preferred embodiment, such as Figure 5 As shown, the first camera unit 9 includes a first industrial camera 24 and a first supplementary light 23; the second camera unit 5 includes a second industrial camera and a second supplementary light. The first industrial camera 24 and the second industrial camera can perform high-definition imaging of the contact network, capturing surface defects and structural conditions of the contact network components from both sides respectively. The dual-camera layout reduces blind spots. The first supplementary light 23 and the second supplementary light provide supplementary light sources in low-light environments such as tunnels and nighttime, avoiding image blurring due to insufficient light and ensuring image clarity to meet subsequent defect identification requirements.

[0033] In a preferred embodiment, such as Figure 1 as well as Figure 2 As shown, a first handle 10 is fixedly connected to the side of the first connecting body 1 away from the second connecting body 4; a second handle 20 is fixedly connected to the side of the second connecting body 4 away from the first connecting body 1. The first handle 10 and the second handle 20 are provided for inspection personnel to hold and operate when the trolley starts, stops, adjusts its position, or encounters obstacles on the track, making it convenient to manually drag the trolley. At the same time, they provide a point of leverage when the trolley needs to be loaded or unloaded from the track, improving the convenience of manual operation, and further enhancing the controllability of the trolley in conjunction with the push rod 3.

[0034] In a preferred embodiment, such as Figure 4 As shown, a guide rail 22 is provided at the bottom of the second connecting body 4, and the top of the mounting frame 19 is slidably connected to the guide rail 22. The sliding connection between the guide rail 22 and the mounting frame 19 provides stable lateral movement guidance for the mounting frame 19, ensuring that the mounting frame 19 only moves laterally along the track under the action of the spring telescopic rod 15, avoiding deviation or tilting due to vibration or track irregularities, and ensuring that the second auxiliary wheel 17 and the side wheel 18 always fit against the side and top surfaces of the track in a preset direction, thereby improving structural stability and motion accuracy.

[0035] In a preferred embodiment, the spring telescopic rod 15 includes an inner rod, an outer cylinder, and a spring. One end of the inner rod is connected to the intermediate body 2, and the other end is slidably connected inside the outer cylinder. The spring is disposed inside the outer cylinder, with one end connected to the inner rod and the other end connected to the outer cylinder. The outer cylinder is connected to the mounting frame 19. The sliding connection between the inner rod and the outer cylinder provides guidance for the telescopic rod, ensuring that the telescopic direction is axial and avoiding skewness or jamming. The spring inside the outer cylinder absorbs the impact force generated by the change of the track side of the mounting frame 19 through its own telescopic movement. When the mounting frame 19 is subjected to lateral thrust from the track, the inner rod retracts into the outer cylinder and compresses the spring, and the spring force acts in the opposite direction to buffer the impact. When the thrust disappears, the spring resets and drives the inner rod to extend, so that the mounting frame 19 and the second auxiliary wheel 17 automatically return to their original positions and maintain contact with the track side. This structure achieves passive adaptive adjustment through mechanical deformation and provides a basis for the stable detection of the displacement sensor 21, taking into account buffering, reset, and motion accuracy.

[0036] In a preferred embodiment, a plurality of second auxiliary wheels 17 are arranged in an arc shape on the wheel assembly frame 16. The arc arrangement of the second auxiliary wheels 17 can adapt to the curved contour of the track side, ensuring that at least 2-3 wheels are in contact with the track side at the same time, dispersing the contact pressure to reduce wear; the arc layout can accommodate irregular structures such as local protrusions and depressions on the track side, avoiding single wheel jamming, and at the same time, the lateral clamping stability is enhanced by the contact of multiple wheels, preventing the trolley from shifting laterally when vibrating or traveling on curves.

[0037] In a preferred embodiment, both the first camera unit 9 and the second camera unit 5 are covered with transparent protective covers. The transparent protective covers are detachably connected to the first connector 1 and the second connector 4 by bolts, and a waterproof sealing ring is provided on the inner edge of the protective cover. The transparent protective covers can block dust, rainwater, flying stones and other debris during inspection, preventing the camera unit lens from being contaminated or damaged by impact, while not affecting the shooting field of view; the detachable bolt connection facilitates the periodic removal of the protective cover to clean the lens or repair the camera unit; the waterproof sealing ring enhances the sealing performance of the protective cover, preventing rainwater and fog from seeping into the inside and causing the lens to fog up or the equipment to get damp, ensuring that the camera unit works stably in humid and rainy environments.

[0038] In a preferred embodiment, such as Figure 1 As shown, the intermediate body 2 houses a control module 6 and a wireless transmission module 7, both housed within the same casing. The control module 6 is electrically connected to the drive motor 12, the first camera unit 9, the second camera unit 5, and the displacement sensor 21. The wireless transmission module 7 is electrically connected to the control module 6 and used for communication with a remote terminal. The control module 6, acting as the core hub, receives track status data from the displacement sensor 21 and image data from the camera units. Simultaneously, it controls the speed adjustment of the drive motor 12 and the switching of the supplementary lighting, enabling coordinated operation of all components. The wireless transmission module 7 transmits the inspection data processed by the control module 6 to the remote terminal in real time.

[0039] In a preferred embodiment, the intermediate body 2 is also equipped with a storage battery, which is electrically connected to the drive motor 12, control module 6, first camera unit 9, second camera unit 5, and displacement sensor 21. The storage battery provides independent power to all electrical components such as the drive motor 12, control module 6, camera units, and displacement sensor 21, ensuring that the vehicle can still drive and inspect normally when disconnected from external power supply; it can store electrical energy and is suitable for scenarios without external power supply, such as tunnels and remote sections.

[0040] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart inspection vehicle for overhead contact lines, characterized in that: It includes an intermediate body (2), a first connector (1) and a second connector (4); the first connector (1) and the second connector (4) are fixed to both sides of the intermediate body (2); a first camera unit (9) is provided on the first connector (1) and a second camera unit (5) is provided on the second connector (4); The bottom front and rear sides of the first connecting body (1) are respectively provided with a driving wheel (11) and a driven wheel (13), wherein the driving wheel (11) is connected to the drive motor (12); the bottom of the first connecting body (1) is rotatably connected to the side of the second connecting body (4) near the second connecting body (4); The bottom of the second connecting body (4) is movably connected to a mounting frame (19), and a side wheel (18) is rotatably connected to the mounting frame (19). A wheel assembly frame (16) is fixedly connected to the side of the mounting frame (19) near the first connecting body (1), and a number of second auxiliary wheels (17) are rotatably connected to the wheel assembly frame (16). A spring telescopic rod (15) and a displacement sensor (21) are also provided between the mounting frame (19) and the intermediate body (2). The two ends of the spring telescopic rod (15) are connected to the intermediate body (2) and the mounting frame (19) respectively, and the two ends of the displacement sensor (21) are connected to the intermediate body (2) and the mounting frame (19) respectively.

2. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: A push rod (3) is fixed to one side of the middle part of the intermediate body (2), and a display screen (8) is connected to the top of the push rod (3).

3. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: The first camera unit (9) includes a first industrial camera (24) and a first fill light (23); the second camera unit (5) includes a second industrial camera and a second fill light.

4. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: A first handle (10) is fixedly connected to the side of the first connector (1) away from the second connector (4); a second handle (20) is fixedly connected to the side of the second connector (4) away from the first connector (1).

5. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: The bottom of the second connector (4) is provided with a guide rail (22), and the top of the mounting bracket (19) is slidably connected to the guide rail (22).

6. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: The spring telescopic rod (15) includes an inner rod, an outer cylinder and a spring; one end of the inner rod is connected to the intermediate body (2) and the other end is slidably connected to the outer cylinder; the spring is set in the outer cylinder, one end of the spring is connected to the inner rod and the other end is connected to the outer cylinder; the outer cylinder is connected to the mounting bracket (19).

7. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: Several second auxiliary wheels (17) are arranged in an arc shape on the wheel set frame (16).

8. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: Both the first camera unit (9) and the second camera unit (5) are covered with transparent protective covers. The transparent protective covers are detachably connected to the first connector (1) and the second connector (4) by bolts. A waterproof sealing ring is provided on the inner edge of the protective cover.

9. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: The intermediate body (2) is equipped with a control module (6) and a wireless transmission module (7). The control module (6) is electrically connected to the drive motor (12), the first camera unit (9), the second camera unit (5), and the displacement sensor (21), respectively. The wireless transmission module (7) is electrically connected to the control module (6) and is used to communicate with the remote terminal.

10. The intelligent overhead contact line inspection vehicle according to claim 1, characterized in that: The intermediate body (2) is also equipped with a storage battery, which is electrically connected to the drive motor (12), the control module (6), the first camera unit (9), the second camera unit (5), and the displacement sensor (21).

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