Comprehensive inspection trolley for track state detection

Abstract

The utility model relates to the technical field of track detection, and aims to provide a comprehensive inspection trolley for track state detection, which has the characteristics of convenience in use and high working efficiency. According to the technical scheme, the comprehensive inspection trolley for track state detection is characterized in that the comprehensive inspection trolley comprises a walking unit, a track flaw detection unit and a track geometric state detection unit, and the track flaw detection unit comprises a flaw detection host and an ultrasonic flaw detection wheel and an ultrasonic coupling mechanism which are arranged on the two sides of the walking unit; the track geometric state detection unit comprises a levelness measuring mechanism and track gauge measuring mechanisms arranged on the two sides of the walking unit.

Description

Technical Field

[0001] The utility model relates to the technical field of track detection, in particular to a comprehensive inspection trolley for track condition detection. Background Technique

[0002] The long-term inspection work of track lines can help operators understand the usage status of the lines and provide maintenance guidance. However, the strip-shaped structure of the lines makes the inspection workload extremely large. In addition, due to the high attention paid to safety by the railway, in addition to using track comprehensive inspection vehicles for inspection at fixed intervals, track inspection work also needs to be carried out at the skylight maintenance points every day / every two days.

[0003] In the prior art, for the skylight inspection scenario, traditional measuring tools such as track gauges or track inspection instruments (trolleys) are mainly used for daily inspection of detection items such as the static geometric state and unevenness of the rails on the track line; for the detection of rail diseases on the track line, non-destructive detection of internal defects of the rails is mainly carried out through flaw detection trolleys. Since the above-mentioned equipment mainly relies on the manual pushing operation mode, the measurement efficiency is low, resulting in a heavy workload and poor efficiency in track detection and daily inspection tasks. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the above background technique and provide a comprehensive inspection trolley for track condition detection, which should be convenient to use and have high working efficiency.

[0005] The technical solution of the utility model is as follows:

[0006] A comprehensive inspection trolley for track condition detection, characterized in that it includes a traveling unit, a track flaw detection unit, and a track geometric state detection unit;

[0007] The track flaw detection unit includes a flaw detection host, ultrasonic flaw detection wheels and ultrasonic coupling mechanisms arranged on both sides of the traveling unit; the track geometric state detection unit includes a level measurement mechanism and track gauge measurement mechanisms arranged on both sides of the traveling unit.

[0008] The traveling unit includes a vehicle body, a host, a power supply, and a driving mechanism; the host is electrically connected to the driving mechanism, the flaw detection host, the ultrasonic flaw detection wheels, the ultrasonic coupling mechanisms, the level measurement mechanism, and the track gauge measurement mechanisms.

[0009] The driving mechanism includes driving wheels and driven wheels arranged on the main wheel frames on both sides of the vehicle body and a driving motor that provides power to the driving wheels.

[0010] The ultrasonic flaw detection wheels are respectively arranged between the driving wheels and the driven wheels on both sides; the ultrasonic flaw detection wheels are connected to the main wheel frame through an adjusting mechanism; the ultrasonic flaw detection wheels include a wheel axle, wheels rotatably positioned on the wheel axle, and a plurality of probes arranged inside the wheels and fixed to the wheel axle.

[0011] In the adjusting mechanism, the first wheel frame is positioned on the main wheel frame so as to be slidable horizontally, the first electric push rod is arranged between the main wheel frame and the first wheel frame, the second wheel frame is positioned on the first wheel frame so as to be swingable left and right, the second electric push rod is arranged between the first wheel frame and the second wheel frame, the wheel axle of the ultrasonic flaw detection wheel is rotatably positioned on the second wheel frame, and the third electric push rod is arranged between the second wheel frame and the wheel axle.

[0012] The main wheel frame is provided with a disassembly and assembly structure; the disassembly and assembly structure includes a sliding seat with limiting plates at both ends, a clamping groove formed on the main wheel frame for inserting the sliding seat, and a fastening member connecting the main wheel frame and the limiting plates; the first wheel frame is positioned on the sliding seat so as to be slidable horizontally.

[0013] The ultrasonic coupling mechanism includes a water tank, a spray head communicated with the water tank through a water pipe, and a valve arranged on the water pipe; spray heads are arranged on both the front and rear sides of the ultrasonic flaw detection wheel.

[0014] The gauge measurement mechanism includes a measurement bracket fixed to the vehicle body, a pressing plate positioned on the measurement bracket so as to be slidable horizontally through an optical axis, a first spring for pushing the optical axis to make the pressing plate closely adhere to the track, and a laser distance measurement sensor aligned with the optical axis.

[0015] The gauge measurement mechanism further includes a measurement groove formed on the measurement bracket and having two clamping openings, an adjusting rod fixed to the optical axis and positioned in one of the clamping openings, and a second spring connecting the adjusting rod and the measurement bracket.

[0016] The level measurement mechanism is a multi-axis electronic gyroscope sensor.

[0017] The beneficial effects of the present utility model are:

[0018] Based on the scene of track line maintenance inspection during the skylight period, the present utility model provides a comprehensive inspection trolley for track condition detection. The comprehensive inspection trolley adopts a self-propelled mode, integrates multiple inspection functions such as detection of static geometric state of the track, detection of unevenness condition, and rail flaw detection, realizes the lightweight series connection of the maintenance inspection contents of the track line, and solves the problems of single equipment detection function, heavy inspection operation tasks and high cost during the skylight period in the prior art. Description of the Drawings

[0019] Figure 1 is one of the three-dimensional structure schematic diagrams of the present utility model.

[0020] Figure 2It is the second three-dimensional structure schematic diagram of the utility model.

[0021] Figure 3 It is the front view structure schematic diagram of the utility model.

[0022] Figure 4 It is the top view structure schematic diagram of the utility model.

[0023] Figure 5 It is the bottom view structure schematic diagram of the utility model.

[0024] Figure 6 It is the sectional structure schematic diagram of the utility model.

[0025] Figure 7 It is the three-dimensional structure schematic diagram of the driving mechanism of the utility model.

[0026] Figure 8 It is the three-dimensional structure schematic diagram of the ultrasonic coupling mechanism of the utility model.

[0027] Figure 9 It is the three-dimensional structure schematic diagram of the main wheel frame and the ultrasonic flaw detection wheel of the utility model.

[0028] Figure 10 It is the three-dimensional structure schematic diagram of the ultrasonic flaw detection wheel of the utility model.

[0029] Figure 11 It is the first sectional structure schematic diagram of the ultrasonic flaw detection wheel of the utility model.

[0030] Figure 12 It is the second sectional structure schematic diagram of the ultrasonic flaw detection wheel of the utility model.

[0031] Figure 13 It is the three-dimensional structure schematic diagram of the gauge measurement mechanism of the utility model.

[0032] Figure 14 It is the first working principle schematic diagram of the gauge measurement mechanism of the utility model.

[0033] Figure 15 It is the second working principle schematic diagram of the gauge measurement mechanism of the utility model.

[0034] Figure 16 It is the schematic diagram of the arrangement mode of the probe of the utility model.

[0035] Reference numerals:

[0036] Traveling unit 1, main machine 1-1, power supply 1-2, driving wheel 1-3, driven wheel 1-4, driving motor 1-5, speed reducer 1-6, telescopic universal coupling 1-7, high-precision length measuring wheel 1-8, vehicle frame 1.1, main wheel frame 1.2, baffle 1.2-1, card slot 1.2-2, fixing hole 1.2-3, flaw detection main machine 2-1, first wheel frame 2-11, second wheel frame 2-12, limit plate 2-13, sliding seat 2-14, slider 2-15, second wheel frame crank 2-16, wheel axle crank 2-17, adjustment slot 2-18, fastener 2-19, ultrasonic flaw detection wheel 2-2, first electric push rod 2-21, second electric push rod 2-22, third electric push rod 2-23, wheel axle 2-3, wheel 2-4, probe 2-5, probe support 2-6, water tank 3-1, water pipe 3-2, nozzle 3-3, valve 3-4, measuring support 4-1, optical axis 4-2, pressing plate 4-3, first spring 4-4, laser distance measuring sensor 4-5, measuring slot 4-6, first bayonet 4-6-1, second bayonet 4-6-2, limit nut 4-6-3, adjusting rod 4-7, second spring 4-8. Detailed implementation mode

[0037] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0038] As Figure 1 shown, an integrated inspection trolley for track condition detection includes a traveling unit 1, a track flaw detection unit, and a track geometric state detection unit.

[0039] The traveling unit is used to move along the track. The track flaw detection unit and the track geometric state detection unit are arranged on the traveling unit. The track flaw detection unit is used for rail flaw detection, and the track geometric state detection unit is used for track static geometric state detection and unevenness condition detection.

[0040] The traveling unit includes a vehicle body, a main machine 1-1, a power supply 1-2, and a driving mechanism. The vehicle body includes a vehicle frame 1.1 and main wheel frames 1.2 located on both sides of the vehicle frame. The driving mechanism includes a driving wheel 1-3, a driven wheel 1-4, and a driving motor 1-5. The main machine, the power supply, and the driving motor are all arranged on the vehicle frame. The driving wheel and the driven wheel are simultaneously rotatably positioned on the main wheel frames on both sides.

[0041] As Figure 7As shown, the walking unit adopts a coaxial two-wheel drive method, and the drive motor is a brushless motor. The power of the drive motor is first transmitted to the reducer 1-6, and then transmitted to the drive wheels on both sides through two telescopic universal couplings 1-7, thereby increasing the friction with the track and improving the traveling speed and stability. The drive wheels and driven wheels are made of nylon material, which ensures the insulation performance and at the same time has the characteristics of light weight and wear resistance. The outer edges of the drive wheels and driven wheels are consistent with the curve radian of the inner edge of the track, which can fully fit the track, and the drive wheels and driven wheels have a certain taper, which can realize the adaptive adjustment of the wheelbase to adapt to different gauge conditions and ensure reliable passage.

[0042] Above the drive wheel, there is a high-precision length measuring wheel 1-8. When the drive wheel rotates, it drives the high-precision length measuring wheel to rotate. The high-precision length measuring wheel can convert the driving distance of the integrated inspection trolley into pulse signals through the internal precision encoder, and the host can accurately calculate the driving mileage of the integrated inspection trolley after receiving the pulse signals.

[0043] The power supply includes a set of ternary lithium battery packs for supplying power to all devices of the integrated inspection trolley. The overall power consumption of the integrated inspection trolley is less than 200W, and the power supply can ensure that the integrated inspection trolley can continuously work for no less than 8 hours.

[0044] The track flaw detection unit includes a flaw detection host 2-1, ultrasonic flaw detection wheels 2-2 and an ultrasonic coupling mechanism. The flaw detection host is arranged on the vehicle frame, and the ultrasonic flaw detection wheels and the ultrasonic coupling mechanism are both arranged on the main wheel frames on both sides. The ultrasonic flaw detection wheels are connected to the main wheel frames through an adjustment mechanism, and the ultrasonic flaw detection wheels are arranged between the drive wheels and the driven wheels on the same side.

[0045] As Figure 11 and Figure 12 shown, the ultrasonic flaw detection wheel includes a wheel axle 2-3, a wheel 2-4 rotatably positioned on the wheel axle, a probe support 2-6 arranged inside the wheel and fixed to the wheel axle, and a number of probes 2-5 arranged on the probe support. As Figure 16 shown, the probes are located above the wheel axle and are arranged in an arc shape. The inner arc surfaces of these probes face the contact surface between the ultrasonic flaw detection wheel and the track. Each ultrasonic flaw detection wheel has 9 probes inside, and the two ultrasonic flaw detection wheels have a total of 18 probes (18 channels in total), which can meet the needs of detecting the damage of the rail head, rail waist (including screw holes), middle part of the rail bottom (the projection part of the rail waist), etc. of the left and right rail tracks simultaneously.

[0046] The flaw detection host is internally equipped with an integrated high-performance control board, which is equipped with a high-speed DSP and FPGA processor, a multi-channel high-speed AD sampling and conditioning circuit and a high-speed communication circuit. It can process the rail inspection data of 18 channels simultaneously. At the same time, the flaw detection host is provided with two communication interfaces and power supply interfaces for the ultrasonic flaw detection wheels and an upper communication interface.

[0047] As Figure 10 shown, the adjusting mechanism includes a first wheel frame 2-11, a second wheel frame 2-12, a first electric push rod 2-21, a second electric push rod 2-22, and a third electric push rod 2-23. Among them: The first wheel frame is positioned on the main wheel frame so as to be slidable horizontally (the sliding direction of the first wheel frame is parallel to the Figure 3 horizontal direction), a sliding seat 2-14 is provided on the main wheel frame, a slider 2-15 can slide along the sliding seat and the first wheel frame is fixed to the slider, the first electric push rod is arranged between the main wheel frame and the first wheel frame, and both ends of the first electric push rod are respectively connected to the slider and the sliding seat; The second wheel frame is positioned on the first wheel frame so as to be swingable left and right (the swing axis of the second wheel frame is parallel to the Figure 6 horizontal direction), the second electric push rod is arranged between the first wheel frame and the second wheel frame, one end of the second electric push rod is rotatably positioned on the first wheel frame, the other end of the second electric push rod is rotatably positioned on the crank 2-16 of the second wheel frame, and the crank of the second wheel frame is fixed to the rotating shaft of the second wheel frame; The wheel axle of the ultrasonic flaw detection wheel is rotatably positioned on the second wheel frame (the rotation axis of the wheel axle is parallel to the Figure 3 horizontal direction), the third electric push rod is arranged between the second wheel frame and the wheel axle, one end of the third electric push rod is rotatably positioned on the second wheel frame, the other end of the third electric push rod is rotatably positioned on the crank 2-17 of the wheel axle, and the crank of the wheel axle is fixed to the wheel axle; Through the adjusting mechanism, the left-right centering adjustment, the left-right inclination fine adjustment, and the probe pitch angle fine adjustment of the ultrasonic flaw detection wheel can be realized; The left-right centering adjustment of the ultrasonic flaw detection wheel is realized through the first electric push rod, the left-right inclination fine adjustment of the ultrasonic flaw detection wheel is realized through the second electric push rod, and the pitch angle fine adjustment of the probe is realized through the third electric push rod.

[0048] As Figure 9 shown, the main wheel frame is provided with a disassembly and assembly structure, and the ultrasonic flaw detection wheel is connected to the main wheel frame through the disassembly and assembly structure, and the disassembly and assembly structure can realize the rapid disassembly and assembly of the ultrasonic flaw detection wheel and the height adjustment. In the disassembly and assembly structure, limiting plates 2-13 are provided at both ends of the sliding seat, clamping grooves 1.2-2 which are vertically arranged and open upward are provided on the baffle plates 1.2-1 on both sides of the main wheel frame, and a fastener 2-19 is used to connect the limiting plate and the main wheel frame. The limiting plate is provided with a vertically arranged adjusting groove 2-18, the baffle plate of the main wheel frame is provided with a fixing hole 1.2-3, the sliding seat is inserted downward into the clamping groove, and after the fastener passes through the adjusting groove and the fixing hole, the limiting plate and the main wheel frame are fixed. The fastener is a bolt and a nut. By adjusting the up and down position of the sliding seat, not only can the ultrasonic flaw detection wheel be quickly disassembled and assembled, but also the height of the ultrasonic flaw detection wheel can be quickly adjusted to adapt to the conditions of different tracks, so as to ensure the sampling accuracy.

[0049] As Figure 8As shown, in the ultrasonic coupling mechanism, the water tank 3-1 is located above the main wheel frame. Two nozzles 3-3 are connected to the water tank through a water pipe 3-2. These two nozzles are respectively arranged in front of and behind the ultrasonic flaw detection wheel, and valves 3-4 are provided on both branches of the water pipe to control the opening and closing of the two nozzles respectively. The water tank is also equipped with a pressurizing mechanism (omitted in the figure). The water tank meets the medium coupling between the ultrasonic flaw detection wheel and the track by controlling the flow rate of the coupling liquid. The water flow is continuous and can fill the space between the ultrasonic flaw detection wheel and the wheel-rail, so as to achieve the best coupling effect.

[0050] The track geometric state detection unit includes a gauge measurement mechanism and a level measurement mechanism. The gauge measurement mechanism is arranged on both sides of the vehicle frame. As Figure 13 shown, the gauge measurement mechanism includes a measurement bracket 4-1, an optical axis 4-2, a pressing plate 4-3, a first spring 4-4, a laser distance sensor 4-5, an adjusting rod 4-7, and a second spring 4-8.

[0051] The measurement bracket is fixed to the vehicle frame, and a measurement groove 4-6 is provided on the measurement bracket. The optical axis is slidably positioned on the measurement bracket (the sliding direction of the optical axis is parallel to Figure 3 the horizontal direction of the vehicle). The pressing plate is fixed to the optical axis, and a slider in contact with the track is provided on the inner side of the pressing plate (the side facing the track). The first spring is sleeved on the optical axis, and both ends of the first spring respectively abut against the measurement bracket and the limit nut 4-6-3 at the end of the optical axis. By axially pushing the optical axis, the pressing plate is pressed tightly against the rail head of the track. The adjusting rod is fixed to the optical axis and the adjusting rod also passes through the measurement groove. The second spring connects the adjusting rod and the measurement bracket.

[0052] Two notches are made on the measurement groove, including a first notch 4-6-1 and a second notch 4-6-2. The height positions of these two notches are different, and the horizontal distances from the laser distance sensor are also different. The adjusting rod passes through the measurement groove and can be switched between different notches to adjust the distance between the optical axis and the sensor and the up and down position of the pressing plate.

[0053] As Figure 13 and Figure 14 shown, when the adjusting rod is located in the first notch and the pressing plate is in contact with the inner side of the track, when the integrated inspection trolley moves along the track, the change in the gauge will drive the optical axis to laterally offset through the pressing plate. The precise offset amount of the optical axis is measured by the laser distance sensor, and then the gauge parameter is obtained according to the calibrated reference position. The measurement accuracy of the gauge can be controlled within 0.5 mm.

[0054] Since the contact position between the pressing plate and the track is 16 mm below the rail surface, this position is the lowest point of the entire integrated inspection trolley and is easily damaged by accidental collision. When in a non-working state, press down the adjusting rod and push it into the second notch, the pressing plate will lift upward and no longer contact the track, which is convenient for the movement, handling and placement of the integrated inspection trolley.

[0055] The level measurement mechanism is a multi-axis electronic gyroscope sensor, which can measure the track gradient and the heading angle of the integrated inspection trolley during driving, with an accuracy of 0.01°.

[0056] The main machine is electrically connected to the drive motor, flaw detection main machine, first electric push rod, second electric push rod, third electric push rod, valve, pressurization mechanism, multi-axis electronic gyroscope sensor, and laser distance sensor.

[0057] To facilitate the operation and control of the integrated inspection trolley by the staff and the attitude adjustment of the ultrasonic flaw detection wheel, the integrated inspection trolley is also equipped with an independent handheld remote controller. The handheld remote controller is connected to the integrated inspection trolley through wire or wireless for comprehensive control. At the same time, the handheld remote controller is equipped with a portable flat panel display, which greatly reduces the handheld weight and makes the operation more convenient and labor-saving.

[0058] The accompanying drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

Claims

1. A comprehensive inspection vehicle for track status detection, characterized in that: It includes a travel unit (1), a track flaw detection unit, and a track geometry state detection unit; The track flaw detection unit comprises a flaw detection host (2-1) and ultrasonic flaw detection wheels (2-2) and an ultrasonic coupling mechanism arranged on both sides of a traveling unit; the track geometry state detection unit comprises a levelness measurement mechanism and a track gauge measurement mechanism arranged on both sides of the traveling unit.

2. A comprehensive inspection vehicle for track status detection according to claim 1, characterized in that: The travel unit comprises a vehicle body, a main machine (1-1), a power source (1-2), and a driving mechanism; the main machine is electrically connected to the driving mechanism, the flaw detection main machine, the ultrasonic flaw detection wheel, the ultrasonic coupling mechanism, the levelness measuring mechanism, and the track gauge measuring mechanism.

3. A comprehensive inspection vehicle for track status detection according to claim 2, characterized in that: The driving mechanism comprises a driving wheel (1-3) and a driven wheel (1-4) arranged on main wheel frames (1.2) on both sides of the vehicle body, and a driving motor (1-5) for providing power to the driving wheel.

4. A comprehensive inspection vehicle for track status detection according to claim 1 or 3, characterized in that: The ultrasonic flaw detection wheel is respectively arranged between the driving wheel and the driven wheel on both sides; the ultrasonic flaw detection wheel is connected to the main wheel frame through an adjustment mechanism; the ultrasonic flaw detection wheel comprises a wheel axle (2-3), a wheel (2-4) rotatably positioned on the wheel axle, and a plurality of probes (2-5) arranged inside the wheel and fixed to the wheel axle.

5. The comprehensive inspection vehicle for track status detection according to claim 4 is characterized in that: In the adjustment mechanism, the first wheel frame (2-11) can be positioned on the main wheel frame in a transverse sliding manner, the first electric push rod (2-21) is arranged between the main wheel frame and the first wheel frame, the second wheel frame (2-12) can be positioned on the first wheel frame in a left-right swingable manner, the second electric push rod (2-22) is arranged between the first wheel frame and the second wheel frame, the wheel axle of the ultrasonic flaw detection wheel can be rotatably positioned on the second wheel frame, and the third electric push rod (2-23) is arranged between the second wheel frame and the wheel axle.

6. A comprehensive inspection vehicle for track status detection according to claim 5, characterized in that: The main wheel frame is provided with a disassembly and assembly structure; the disassembly and assembly structure comprises a slide seat (2-14) with limit plates (2-13) at both ends, a slot (1.2-2) formed on the main wheel frame for inserting the slide seat, and a fastener connecting the main wheel frame and the limit plate; the first wheel frame can be positioned on the slide seat in a transversely slidable manner.

7. A comprehensive inspection vehicle for track status detection according to claim 6, characterized in that: The ultrasonic coupling mechanism comprises a water tank (3-1), a nozzle (3-3) connected to the water tank through a water pipe (3-2), and a valve (3-4) arranged on the water pipe; nozzles are arranged at the front and rear of the ultrasonic flaw detection wheel.

8. A comprehensive inspection vehicle for track status detection according to claim 1, 3, 6 or 7, characterized in that: The track gauge measuring mechanism comprises a measuring bracket (4-1) fixed to a vehicle body, a pressing plate (4-3) positioned on the measuring bracket in a transversely slidable manner via an optical axis (4-2), a first spring (4-4) for pushing the optical axis so that the pressing plate is closely attached to the track, and a laser distance measuring sensor (4-5) aligned with the optical axis.

9. A comprehensive inspection vehicle for track status detection according to claim 8, characterized in that: The track gauge measuring mechanism also includes a measuring slot (4-6) formed on the measuring bracket and having two bayonet holes, an adjusting rod (4-7) fixed to the optical axis and positioned in one of the bayonet holes, and a second spring (4-8) connecting the adjusting rod and the measuring bracket.

10. A comprehensive inspection vehicle for track status detection according to claim 9, characterized in that: The levelness measuring mechanism is a multi-axis electronic gyroscope sensor.

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