Railway track geometric parameter single-arm measuring device

Abstract

The utility model discloses a single-arm measuring device for geometric parameters of a railway track. The single-arm measuring device comprises a walking frame assembly, a measuring arm, a distance measuring assembly and a measuring wheel assembly, two ends of the measuring arm are respectively connected with the walking frame assembly; one end of the distance measuring assembly is connected with the end part in the measuring arm, and the other end of the distance measuring assembly is connected with the walking frame assembly; through grooves are formed in the bottoms of the two ends of the measuring arm, one end of the measuring wheel assembly penetrates through the through grooves and then is connected with the distance measuring assembly, the other end of the measuring wheel assembly comprises two measuring wheels, and the measuring wheels are arranged side by side at intervals. The utility model has the beneficial effects that only one measuring arm is adopted, so that the distance between the two measuring wheels is reduced, the structure is simpler, the error during passing through the curve section of the track is further reduced, and the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to a railway track measuring device, in particular to a single-arm measuring device for geometric parameters of railway tracks. Background Technique

[0002] A railway track, also known as a rail, is mainly used on railways and cooperates with a switch to enable a train to run without turning. A railway track usually consists of two parallel steel rails, which are fixed on sleepers, and ballast is placed under the sleepers.

[0003] At present, to ensure the safety of railway tracks under long-term use, it is necessary to periodically detect railway tracks, and the detection content includes aspects such as track flaw detection and gauge measurement.

[0004] In terms of track distance measurement, existing measuring devices usually use two arms for measurement. In the straight section of the track, there is no problem with the two-arm measuring device. However, when passing through the curved section of the track, as Figure 1 shown, due to the excessive distance between the measuring wheels, the measured gauge value is equal to L - t1 + t2; there will be an error value of t2 - t1. Therefore, the measurement accuracy of the two-arm measuring device has an error.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of implication that this information constitutes prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is: how to solve the problems of large measurement error and low accuracy of the existing two-arm measuring device when passing through the curved section of the track.

[0007] The utility model solves the above technical problems by the following technical means:

[0008] A single-arm measuring device for geometric parameters of railway tracks includes a walking frame assembly, a measuring arm, a distance measuring assembly, and a measuring wheel assembly;

[0009] Both ends of the measuring arm are respectively connected to the walking frame assembly; one end of the distance measuring assembly is connected to the inner end of the measuring arm, and the other end is connected to the walking frame assembly;

[0010] Through grooves are opened at the bottoms of both ends of the measuring arm. One end of the measuring wheel assembly passes through the through groove and is connected to the distance measuring assembly. The other end of the measuring wheel assembly includes two measuring wheels, and the measuring wheels are arranged side by side at intervals.

[0011] During the process of the walking frame assembly moving on the top surface of the track in the present utility model, the measuring wheels are in contact with the side surface of the track, and the track distance is obtained through the distance measuring assembly. In the present utility model, only one measuring arm is adopted, which reduces the distance between the two measuring wheels, makes the structure simpler, further reduces the error when passing through the curved section of the track, and improves the detection accuracy.

[0012] Preferably, the walking frame assembly includes a walking frame body and a plurality of walking wheels. The bottom of the walking frame body is connected with a plurality of the walking wheels at intervals. Both ends of the measuring arm are connected with the walking frame body, and one end of the distance measuring assembly is connected with the walking frame body.

[0013] Preferably, the distance measuring assembly includes a distance measuring sensor, a distance measuring top plate, and a reciprocating motion assembly;

[0014] Both the distance measuring sensor and the distance measuring top plate are connected to the reciprocating motion assembly, and the reciprocating motion assembly is connected to the measuring arm and is located at the through groove.

[0015] Preferably, the reciprocating motion assembly includes a first support, a second support, a sliding rod, a slider, and a spring;

[0016] The first support and the second support are connected to one end inside the measuring arm, and the first support and the second support are respectively located at both ends of the through groove;

[0017] Both ends of the sliding rod are respectively connected to the first support and the second support; the slider is slidably connected to the sliding rod, and the spring is sleeved on the sliding rod and respectively abuts against the first support and the slider;

[0018] The distance measuring sensor is connected to the first support, and the distance measuring top plate is connected to the slider.

[0019] By applying an elastic pre-pressure to the slider through the spring, the mechanical clearance between the overall measuring device and the track is eliminated, the slight change in the gauge is truly detected and output by the distance measuring sensor, the measurement accuracy and authenticity are improved, and the detection error is reduced.

[0020] Preferably, one end of the measuring wheel assembly is connected to the reciprocating motion assembly, and the measuring wheel at the other end of the measuring wheel assembly abuts against the side surface of the track.

[0021] Preferably, the measuring wheel assembly includes a linkage plate, a guiding plow head, and a measuring wheel. The top of the linkage plate is connected to the reciprocating motion assembly, the bottom of the linkage plate is connected to the guiding plow head, and the measuring wheel is connected to the guiding plow head.

[0022] Preferably, it further includes a linkage assembly, which includes an equal-arm linkage structure and a measuring rod. The middle of the equal-arm linkage structure is connected to the midpoint of the measuring arm. One end of the measuring rod is rotatably connected to the end of the equal-arm linkage structure, and the other end is rotatably connected to the measuring wheel assembly.

[0023] Preferably, the equal-arm linkage structure includes a main link, an equal-arm adjusting rod, and a first connecting head. The top of the main link is connected to the midpoint of the measuring arm. The bottom of the main link is rotatably connected to the equal-arm adjusting rod, and both ends of the equal-arm adjusting rod are rotatably connected to the first connecting head.

[0024] Preferably, the measuring rod includes a measuring rod body and a second connecting head. One end of the measuring rod body is connected to the equal-arm linkage structure, and the other end is rotatably connected to the second connecting head. The second connecting head is connected to the measuring wheel assembly.

[0025] Preferably, it further includes an electrical box, which is connected to the measuring arm and electrically connected to the distance measuring assembly.

[0026] During the track detection process, the track gauge measuring device is driven by a track inspection vehicle for automated mobile detection, improving the detection efficiency.

[0027] The advantages of the present utility model are as follows:

[0028] During the process of the walking frame assembly walking on the top surface of the track in the present utility model, the measuring wheel abuts against the side surface of the track, and the track distance is obtained through the distance measuring assembly. Only one measuring arm is adopted in the present utility model, so that the distance between the two measuring wheels becomes smaller, the structure is simpler, the error during passing through the track curve section is further reduced, and the detection accuracy is improved.

[0029] An elastic pre-pressure is applied to the slider through a spring, thereby eliminating the mechanical clearance between the overall measuring device and the track, truly detecting and outputting the minute change in the gauge through the distance measuring sensor, improving the accuracy and authenticity of the measurement, and reducing the detection error.

[0030] During the track detection process, the track gauge measuring device is driven by a track inspection vehicle for automated mobile detection, improving the detection efficiency. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the double-arm detection device of the present utility model passing through the track curve section;

[0032] Figure 2 is a schematic structural diagram of the single-arm measuring device for railway track geometric parameters according to an embodiment of the present utility model;

[0033] Figure 3It is a schematic structural diagram of a single-arm measuring device for railway track geometric parameters according to an embodiment of the present utility model;

[0034] Figure 4 It is an exploded schematic diagram of a single-arm measuring device for railway track geometric parameters according to an embodiment of the present utility model;

[0035] Figure 5 It is a schematic structural diagram of a walking frame assembly according to an embodiment of the present utility model;

[0036] Figure 6 It is a schematic structural diagram of a distance measuring assembly according to an embodiment of the present utility model;

[0037] Figure 7 It is a cross-sectional view of a single-arm measuring device for railway track geometric parameters according to an embodiment of the present utility model;

[0038] Figure 8 It is Figure 7 an enlarged view of part A in

[0039] Figure 9 It is a schematic structural diagram of a measuring wheel assembly according to an embodiment of the present utility model;

[0040] Figure 10 It is a schematic structural diagram of a linkage assembly according to an embodiment of the present utility model;

[0041] Reference numerals in the figure:

[0042] 1. Walking frame assembly; 11. Walking frame body; 12. Walking wheel;

[0043] 2. Measuring arm; 21. Through groove;

[0044] 3. Distance measuring assembly; 31. Distance measuring sensor; 32. Distance measuring top plate; 33. Reciprocating motion assembly; 331. First support; 332. Second support; 333. Slide bar; 334. Slide block; 335. Spring;

[0045] 4. Measuring wheel assembly; 41. Linkage plate; 42. Guide plow head; 43. Measuring wheel;

[0046] 5. Linkage assembly; 51. Main connecting rod; 52. Equal-arm adjusting rod; 53. First connecting head; 54. Measuring rod body; 55. Second connecting head.

[0047] 6. Electric box. Detailed implementation manners

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0049] As Figure 1 shown, when the existing double-arm detection device passes through the curved section of the track, since the distance between the two measuring wheels 43 on the same track is too large, the measured gauge value is equal to L - t1 + t2; there will be an error value of t2 - t1. It can also be seen from this schematic diagram that minimizing the distance between the two measuring wheels 43 on the same track can reduce the error. In the case of a double-arm, it is very difficult to make the distance between the measuring wheels 43 relatively small. Therefore, this embodiment provides a single-arm measuring device that can reduce the distance between the measuring wheels 43.

[0050] As Figure 2 、 Figure 3 、 Figure 4 shown, the single-arm measuring device for railway track geometric parameters includes a walking frame assembly 1, a measuring arm 2, a distance measuring assembly 3, and a measuring wheel assembly 4; both ends of the measuring arm 2 are respectively connected to the walking frame assembly 1; one end of the distance measuring assembly 3 is connected to the inner end of the measuring arm 2, and the other end is connected to the walking frame assembly 1; through grooves 21 are opened at the bottoms of both ends of the measuring arm 2. As shown in the reference figure, one end of the measuring wheel assembly 4 passes through the through groove 21 and is connected to the distance measuring assembly 3. The other end of the measuring wheel assembly 4 includes two measuring wheels 41, and the measuring wheels 41 are arranged side by side at intervals.

[0051] Specifically, referring to Figure 1 、 Figure 5 shown, the walking frame assembly 1 includes a walking frame body 11 and a plurality of walking wheels 12. A plurality of the walking wheels 12 are connected to the bottom of the walking frame body 11 at intervals, and both ends of the measuring arm 2 are connected to the walking frame body 11.

[0052] Among them, the walking frame body 11 is generally strip-shaped and can be formed by splicing a plurality of connecting plates. A wheel frame is installed at the bottom of the splicing plate, and the walking wheel 12 is connected to the wheel frame. In this embodiment, there are three walking wheels 12, which are respectively located at both ends and the middle position of the walking frame body 11. The top surface of the walking frame body 11 is welded or bolted to the end of the measuring arm 2.

[0053] The measuring arm 2 is a rectangular cavity frame. The measuring arm 2 serves as the basic frame of the overall device. Its two ends are connected to the traveling frame 11, and the distance measuring components 3 are connected inside its two ends. Through slots 21 are opened at the bottoms of the two ends of the measuring arm 2, and the through slots 21 are rectangular slots.

[0054] As Figure 6 , Figure 7 , Figure 8 shown, the distance measuring component 3 includes a distance measuring sensor 31, a distance measuring top plate 32, and a reciprocating motion component 33; both the distance measuring sensor 31 and the distance measuring top plate 32 are connected to the reciprocating motion component 33. The distance measuring sensor 31 and the distance measuring top plate 32 are arranged at intervals. The distance measuring sensor 31 is fixedly arranged, and the distance measuring top plate 32 can move adaptively following the reciprocating motion component 33. The track distance is obtained by the distance measuring sensor 31 acquiring the change of the distance measuring top plate 32. The reciprocating motion component 33 is connected to the measuring arm 2 and is located at the through slot 21.

[0055] Specifically, the reciprocating motion component 33 includes a first support 331, a second support 332, a slide rod 333, a slider 334, and a spring 335; the first support 331 and the second support 332 are connected to one end inside the measuring arm 2, and the first support 331 and the second support 332 are respectively located at both ends of the through slot 21; both ends of the slide rod 333 are respectively connected to the first support 331 and the second support 332; the slider 334 is slidably connected to the slide rod 333, and the spring 335 is sleeved on the slide rod 333 and respectively abuts against the first support 331 and the slider 334; the distance measuring sensor 31 is connected to the first support 331, and the distance measuring top plate 32 is connected to the slider 334.

[0056] Among them, the distance measuring sensor 31 can be fixedly connected to the first support 331 through a mounting plate.

[0057] One end of the measuring wheel assembly 4 is connected to the slider 334 of the reciprocating motion component 33, and the measuring wheel 43 at the other end of the measuring wheel assembly 4 abuts against the side of the track. The spring 335 always abuts against the slider 334, so that the measuring wheel assembly 4 abuts against the side of the track.

[0058] As Figure 9 shown, the measuring wheel assembly 4 includes a linkage plate 41, a guiding plow head 42, and a measuring wheel 43. The top of the linkage plate 41 is connected to the slider 334 of the reciprocating motion component 33, the bottom of the linkage plate 41 is connected to the guiding plow head 42, and the measuring wheel 43 is connected to the guiding plow head 42.

[0059] The linkage plate 41 can be an L-shaped plate. The top plate of the linkage plate 41 is connected to the bottom of the slider 334, and the bottom of the linkage plate 41 is connected to the top of the guiding plow head 42. Two measuring wheels 43 are spaced and connected to the middle of the guiding plow head 42.

[0060] As Figure 10 shown, the single-arm measuring device for railway track geometric parameters further includes a linkage assembly 5. The linkage assembly 5 includes an equal-arm connecting rod structure and a measuring rod member. The middle of the equal-arm connecting rod structure is connected to the midpoint position of the measuring arm 2. One end of the measuring rod member is rotatably connected to the end of the equal-arm connecting rod structure, and the other end is rotatably connected to the measuring wheel assembly 4.

[0061] Specifically, the equal-arm connecting rod structure includes a main connecting rod 51, an equal-arm adjusting rod 52, and a first connecting head 53. The top of the main connecting rod 51 is connected to the midpoint position of the measuring arm 2. The bottom of the main connecting rod 51 is rotatably connected to the equal-arm adjusting rod 52 through a bearing. Both ends of the equal-arm adjusting rod 52 are rotatably connected to the first connecting head 53 through bearings.

[0062] The measuring rod member includes a measuring rod body 54 and a second connecting head 55. One end of the measuring rod body 54 is connected to the first connecting head 53 of the equal-arm connecting rod structure, and the other end is rotatably connected to the second connecting head 55 through a bearing. The second connecting head 55 is connected to the bottom of the linkage plate 41 of the measuring wheel assembly 4.

[0063] As Figure 1 、 Figure 2 、 Figure 3 shown, the single-arm measuring device for railway track geometric parameters further includes an electrical box 6. The electrical box 6 is connected to the measuring arm 2, and the electrical box 6 is electrically connected to the distance measuring assembly 3.

[0064] The movement of the railway track geometric parameter measuring device on the railway track uses a rail flaw detector vehicle as the power transmission.

[0065] Working principle: When in use, first set the calibration gauge, and then cover the railway track geometric parameter measuring device on the top of the track and make a transmission connection with the rail flaw detector vehicle. During the process of covering and installing the device, under the action of the spring 335, the measuring wheels 43 of the two measuring wheel assemblies 4 at both ends are respectively attached to the sides of the two side rails in pairs, and the traveling wheels 12 of the two traveling frame assemblies 1 on both sides are attached to the top surface of the rail;

[0066] The reciprocating motion component 33 drives the linkage plate 41. Under the pressing force of the spring 335, the surface of the measuring wheel 43 at the bottom of the linkage plate 41 is closely attached to the inner wall measuring point of the railway track. The pre-pressure applied by the compressed spring 335 will eliminate the mechanical clearance of the transmission part of this measuring device. After completion, start the track inspection vehicle to drive the railway track geometric parameter measuring device for mobile detection;

[0067] During the detection process, two of the four measuring rods set inside the device are grouped together and respectively cooperate with two equal-arm linkage structures to drive the moving parts inside the reciprocating motion component 33. During the measurement movement transition, the gauge change value will be transmitted to the distance measuring sensor 31 through the distance measuring top plate 32 along with the movement of the slider 334 for distance measurement. Also, because the equal-arm linkage structure adopts an equal-arm lever structure and the two measuring rods corresponding to the equal-arm linkage structure are symmetrically distributed left and right, the true gauge change amount is twice the value of the measured displacement sensor. Then, using software, the data value generated after adding or subtracting twice the displacement value from the calibrated gauge is the true gauge data;

[0068] During the movement of the track inspection vehicle, the inspection equipment inside the track inspection vehicle can be synchronously started. Then, while detecting the gauge of the track, flaw detection can be carried out, linking the two aspects of detection operations to improve the detection efficiency and optimize the detection process.

[0069] In this embodiment, only one measuring arm 2 is adopted, which makes the distance between the two measuring wheels 43 smaller, the structure is simpler, further reduces the error when passing through the track curve section, and improves the detection accuracy. By applying an elastic pre-pressure to the slider 334 through the spring 335, the mechanical clearance between the overall measuring device and the track is eliminated, and the tiny change in the gauge is truly detected and output by the distance measuring sensor 31, improving the accuracy and authenticity of the measurement and reducing the detection error. During the track detection process, the track inspection vehicle drives the track gauge measuring device for automatic mobile detection, improving the detection efficiency.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single-arm measuring device for railway track geometric parameters, characterized in that, It includes a walking frame assembly, a measuring arm, a distance measuring assembly, and a measuring wheel assembly; Both ends of the measuring arm are respectively connected to the walking frame assembly; one end of the distance measuring assembly is connected to the inner end of the measuring arm, and the other end is connected to the walking frame assembly; Through slots are opened at the bottoms of both ends of the measuring arm. One end of the measuring wheel assembly passes through the through slots and is connected to the distance measuring assembly. The other end of the measuring wheel assembly includes two measuring wheels, and the measuring wheels are arranged side by side at intervals.

2. The single-arm measuring device for railway track geometric parameters according to claim 1, characterized in that The walking frame assembly includes a walking frame body and a plurality of walking wheels. A plurality of the walking wheels are connected to the bottom of the walking frame body at intervals. Both ends of the measuring arm are connected to the walking frame body, and one end of the distance measuring assembly is connected to the walking frame body.

3. The single-arm measuring device for railway track geometric parameters according to claim 1, characterized in that, The distance measuring assembly includes a distance measuring sensor, a distance measuring top plate, and a reciprocating motion assembly; Both the distance measuring sensor and the distance measuring top plate are connected to the reciprocating motion assembly, and the reciprocating motion assembly is connected to the measuring arm and is located at the through slot.

4. The single-arm measuring device for railway track geometric parameters according to claim 3, wherein, The reciprocating motion assembly includes a first support, a second support, a slide rod, a slider, and a spring; The first support and the second support are connected to one end inside the measuring arm, and the first support and the second support are respectively located at both ends of the through slot; Both ends of the slide rod are respectively connected to the first support and the second support; the slider is slidably connected to the slide rod, and the spring is sleeved on the slide rod and respectively abuts against the first support and the slider; The distance measuring sensor is connected to the first support, and the distance measuring top plate is connected to the slider.

5. The single-arm measuring device for railway track geometric parameters according to claim 3, characterized in that One end of the measuring wheel assembly is connected to the reciprocating motion assembly, and the measuring wheels at the other end of the measuring wheel assembly abut against the side surface of the track.

6. The single-arm measuring device for railway track geometric parameters according to claim 3, characterized in that The measuring wheel assembly includes a linkage plate, a guiding plow head, and a measuring wheel. The top of the linkage plate is connected to the reciprocating motion assembly, the bottom of the linkage plate is connected to the guiding plow head, and the measuring wheel is connected to the guiding plow head.

7. The single-arm measuring device for railway track geometric parameters according to claim 3, characterized in that It further includes a linkage assembly. The linkage assembly includes an equal-arm linkage structure and a measuring rod. The middle of the equal-arm linkage structure is connected to the midpoint position of the measuring arm. One end of the measuring rod is rotatably connected to the end of the equal-arm linkage structure, and the other end is rotatably connected to the measuring wheel assembly.

8. The single-arm measuring device for railway track geometric parameters according to claim 7, characterized in that, The equal-arm linkage structure includes a main link, an equal-arm adjusting rod, and a first connecting head. The top of the main link is connected to the midpoint position of the measuring arm. The bottom of the main link is rotatably connected to the equal-arm adjusting rod, and both ends of the equal-arm adjusting rod are rotatably connected to the first connecting head.

9. The single-arm measuring device for railway track geometric parameters according to claim 7, characterized in that The measuring rod includes a measuring rod body and a second connecting head. One end of the measuring rod body is connected to the equal-arm linkage structure, and the other end is rotatably connected to the second connecting head. The second connecting head is connected to the measuring wheel assembly.

10. The single-arm measuring device for railway track geometric parameters according to claim 1, characterized in that, It further includes an electrical box. The electrical box is connected to the measuring arm, and the electrical box is electrically connected to the distance measuring assembly.

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