A wheel support for a rail ultrasonic flaw detector

Abstract

The present invention relates to a wheel support for an ultrasonic rail flaw detector, comprising: an outer frame connected to the detector vehicle frame, on which a guide wheel set is installed; an inner frame, which is installed above the outer frame through a threaded adjusting member; a swing angle adjusting mechanism, which is horizontally slidably connected to the inner frame, and the driving end of the swing angle adjusting mechanism is connected to the wheel set and adjusts the deflection angle of the wheel set relative to the horizontal center plane of the rail; a horizontal adjusting mechanism, which is horizontally limited on the guide wheel set and can move vertically relative to the guide wheel set, and the driving end of the horizontal adjusting mechanism is connected to the swing angle adjusting mechanism and drives the swing angle adjusting mechanism to drive the wheel set to move horizontally along the inner frame; wherein, by turning the threaded adjusting member, the vertical displacement of the inner frame, the swing angle adjusting mechanism, the horizontal adjusting mechanism and the wheel set is adjusted to realize the adjustment of the downward pressure amount of the wheel set relative to the rail tread. After the downward pressure amount is adjusted in place, the horizontal adjusting mechanism is locked and fixed to the guide wheel set.

Description

Technical Field

[0001] The present invention relates to a wheel support for a rail ultrasonic flaw detector, belonging to the technical field of rail ultrasonic flaw detection. Background Art

[0002] At present, ultrasonic wheels have been widely used in rail flaw detectors. According to the requirements of rail ultrasonic flaw detection, the wheel must maintain a certain downward pressure and a certain angle during operation on the top surface of the rail. However, since the gauge of the rail often changes, if the wheel is simply fixed on the rail ultrasonic flaw detector, then during the flaw detection process of the rail ultrasonic flaw detector, the wheel will deviate from the preset flaw detection position with the change of the gauge.

[0003] At present, the follow-up structure of the wheel support is relatively complex, and both installation and subsequent maintenance are troublesome. The position adjustment function of the wheel mostly focuses on horizontal adjustment and angle adjustment, while the adjustment function of the downward pressure is mostly weakened, and the adjustment structure of the downward pressure is relatively complex, and both installation and subsequent maintenance are troublesome. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing follow-up structure is complex, the overall adjustment structure is not closely matched, and the installation and subsequent maintenance are troublesome.

[0005] The technical solution for the present invention to solve the above technical problems is as follows: A wheel support for a rail ultrasonic flaw detector, comprising:

[0006] An outer frame connecting to the detector vehicle frame, on which a guide wheel set is installed;

[0007] An inner frame, which is installed above the outer frame through a threaded adjusting member;

[0008] A swing angle adjusting mechanism, which is horizontally slidably connected to the inner frame, and the driving end of the swing angle adjusting mechanism is connected to the wheel set and adjusts the deflection angle of the wheel set relative to the transverse center plane of the rail;

[0009] A horizontal adjusting mechanism, which is horizontally limited on the guide wheel set and can move vertically relative to the guide wheel set, and the driving end of the horizontal adjusting mechanism is connected to the swing angle adjusting mechanism and drives the swing angle adjusting mechanism to drive the wheel set to move horizontally along the inner frame;

[0010] Wherein, by turning the threaded adjusting member, the vertical displacement of the inner frame, the swing angle adjusting mechanism, the horizontal adjusting mechanism and the wheel set is adjusted to realize the adjustment of the downward pressure of the wheel set relative to the rail tread. After the downward pressure is adjusted in place, the horizontal adjusting mechanism is locked and fixed to the guide wheel set.

[0011] The beneficial effects of the present invention are as follows: The inner frame of the present invention is installed above the outer frame through a threaded adjusting member. By turning the threaded adjusting member, the vertical displacement of the inner frame and the swing angle adjusting mechanism, the lateral adjusting mechanism, and the probe wheel set installed thereon can be adjusted, so as to realize the adjustment of the downward pressure amount of the probe wheel set relative to the rail tread. After adjustment, it is locked and fixed to prevent the change of the downward pressure amount. The structure is simple and easy to implement, and it is convenient for operation and later maintenance. Before the flaw detector runs, the probe wheel set is adjusted to the preset flaw detection position by using the swing angle adjusting mechanism and the lateral adjusting mechanism. After the flaw detector runs, the lateral adjusting mechanism cooperates with the guide wheel set to realize the follow-up function of the probe wheel set and the guide wheel set, so that the probe wheel set is always at the preset position on the central axis plane of the rail with the change of the inner side surface of the rail.

[0012] On the basis of the above technical solutions, the present invention can be further improved as follows.

[0013] Further, the lateral adjusting mechanism includes:

[0014] A lateral motor connecting plate, located on one side of the probe wheel set;

[0015] A lateral motor, horizontally installed on the lateral motor connecting plate, and its driving end is connected to the swing angle adjusting mechanism;

[0016] A first guiding column, installed on the lateral motor connecting plate. A first sliding sleeve is provided on the guide wheel set, and the first guiding column can be vertically slidably placed in the first sliding sleeve;

[0017] Among them, during the process of adjusting the downward pressure amount, the first guiding column vertically slides in the first sliding sleeve. When the downward pressure amount is adjusted in place, the lateral motor connecting plate is locked and fixed to the guide wheel set.

[0018] The beneficial effect of adopting the above further scheme is that the lateral motor connecting plate is installed on one side of the probe wheel set, which is convenient for installing the lateral motor and facilitating the cooperation of the lateral motor connecting plate with the first sliding sleeve and the locking structure on the guide wheel set. When the downward pressure amount is adjusted in place, the lateral motor connecting plate and the lateral motor thereon can follow up with the guide wheel set.

[0019] Further, a second guiding column arranged horizontally is provided on the lateral motor connecting plate, and a second sliding sleeve is provided on the swing angle adjusting mechanism. The second guiding column can be horizontally slidably placed in the second sliding sleeve.

[0020] The beneficial effect of adopting the above further scheme is that by providing the second guiding column on the lateral motor connecting plate, when the lateral motor makes a lateral adjustment, the swing angle adjusting mechanism can move laterally stably and prevent deviation.

[0021] Further, there are two guide wheel sets, which are respectively located on the front and rear sides of the probe wheel set, and the two ends of the lateral motor connecting plate are respectively provided with the first guiding columns.

[0022] The beneficial effects of adopting the above further solution are as follows: By respectively limiting and fixing both ends of the transverse motor connecting plate to two guide wheel sets, the connection of the transverse adjustment mechanism becomes more stable, and the driving of the swing angle adjustment mechanism and the detection wheel set thereon to move horizontally is smoother.

[0023] Further, a horizontally arranged guide shaft is provided on the outer frame, and the guide wheel set is rotatably connected to the guide shaft and can axially move along the guide shaft;

[0024] The guide wheel set includes a guide wheel, a bushing, and a connecting frame. The guide wheel is rotatably connected to the bushing. The bushing is sleeved on the guide shaft and can axially slide along the guide shaft. The connecting frame is installed on the bushing, and the first sliding sleeve is arranged on one side of the connecting frame close to the transverse adjustment mechanism; after the downward pressure adjustment is in place, the transverse motor connecting plate is locked and fixed to the connecting frame.

[0025] The beneficial effects of adopting the above further solution are as follows: The guide wheel set can rotate on the guide shaft and also axially move along the guide shaft. The connecting frame is used to realize the cooperative connection with the transverse adjustment mechanism. The connecting frame provides support for the guide wheel and does not affect the rotation of the guide wheel.

[0026] Further, guide blocks are respectively arranged in front of and behind the guide wheel at one end of the bushing close to the transverse motor connecting plate. A friction ring is arranged on the guide wheel on the same side as the guide blocks. A brush assembly is installed on the guide block located in front of the guide wheel; a horizontally arranged tension spring is connected between the outer frame and the connecting frame, and the tension spring is located on the side of the bushing away from the transverse motor connecting plate.

[0027] The beneficial effects of adopting the above further solution are as follows: The friction ring is made of wear-resistant material to prevent the problem of frequent replacement of the overall guide wheel due to excessive wear of the guide wheel rim; the double-sided guide block structure outside the guide wheel is more reliable when reversely entering the turnout frog; the tension spring structure does not need to be sleeved on the sliding shaft, and the installation and disassembly are more convenient.

[0028] Further, the swing angle adjustment mechanism includes:

[0029] A swing angle motor connecting frame, located on one side of the detection wheel set, and the driving end of the transverse adjustment mechanism is connected to the swing angle motor connecting frame;

[0030] Connecting plates, there are two connecting plates respectively located on the front and rear sides of the detection wheel set. Sliders are installed on the connecting plates, and a horizontally arranged guide rail is installed on the inner frame. The sliders are in sliding fit with the guide rail;

[0031] The swing angle motor is installed on the swing angle motor connecting frame;

[0032] Among them, the probe wheel set is hinged between two connecting plates, and the driving end of the swing angle motor is connected to the upper end of the probe wheel set and drives the probe wheel set to deflect a certain angle relative to the transverse center plane of the rail.

[0033] The beneficial effect of adopting the above further scheme is that when the swing angle motor is driven, the swing angle motor will drive the probe wheel set to rotate between the two connecting plates to achieve the purpose of adjusting the probe wheel angle.

[0034] Further, the lower ends of the connecting plates on both sides of the probe wheel set are respectively connected with a nozzle assembly.

[0035] The beneficial effect of adopting the above further scheme is that when the water pipe on the flaw detector is inserted into the quick-connect water pipe joint and the water pump on the flaw detector is driven, the coupling liquid can be sprayed onto the preset position on the surface of the rail head through the nozzle assembly.

[0036] Further, a vertically arranged spring pin is installed on the inner frame, a limit groove is opened at a position corresponding to the lower end of the spring pin on the swing angle adjusting mechanism, and a roller collision block assembly is installed outside the limit groove; among them, when assembling the swing angle adjusting mechanism, push the swing angle adjusting mechanism to slide along the inner frame, so that the roller on the roller collision block assembly presses the button of the spring pin, and the pin head of the spring pin is placed in the limit groove to realize the assembly locking of the swing angle adjusting mechanism and the probe wheel set.

[0037] The beneficial effect of adopting the above further scheme is that by using the cooperation between the spring pin and the roller anti-collision block assembly, when assembling the swing angle adjusting mechanism, the pin head of the spring pin is placed in the limit groove, which can limit the swing angle adjusting mechanism, the probe wheel set, the transverse adjusting mechanism and the guide wheel set as a whole at the preset position. After the probe wheel bracket is fixed on the flaw detector vehicle body as a whole, there is a gap between the guide block on the guide wheel set and the inner side surface of the rail head. It is easy to place the guide block on the inner side of the rail, and then manually lift the pull ring of the spring pin to make the pin head of the spring pin return. At this time, the guide wheel set tightly abuts against the inner side surface of the rail head under the action of the tension spring; when the flaw detection is completed, manually push the probe wheel set to move it horizontally towards the inner side of the rail head, so that the roller on the roller collision block assembly presses the button on the spring pin, and the pin head of the spring pin is placed in the limit groove to realize the re-locking of the swing angle adjusting mechanism and the probe wheel set, and make preparations for removing the probe wheel frame from the vehicle body.

[0038] Further, a guide post three is provided on the outer frame, a guide hole is provided on the inner frame, the inner frame is installed on the outer frame through the guiding fit between the guide hole and the guide post three, and a fastening nut is connected to the guide post three.

[0039] The beneficial effects of adopting the above further solution are as follows: By utilizing the cooperation between the guide post three and the guide hole, when installing or adjusting the pressing amount of the inner frame and its upper structure, it can move in the vertical direction to avoid deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic assembly diagram of the detection wheel bracket of the present invention;

[0041] Figure 2 Schematic installation structure diagram of the inner frame, the lateral adjustment mechanism, the swing angle adjustment mechanism and the detection wheel set of the present invention;

[0042] Figure 3 Stereoscopic structure diagram of the outer frame of the present invention;

[0043] Figure 4 Stereoscopic structure diagram of the lateral adjustment mechanism of the present invention;

[0044] Figure 5 Schematic installation structure diagram of the outer frame, the guide wheel set and the lateral adjustment mechanism of the present invention;

[0045] Figure 6 Stereoscopic structure schematic of the guide wheel set of the present invention Figure 1 ;

[0046] Figure 7 Stereoscopic structure schematic of the guide wheel set of the present invention Figure 2 ;

[0047] Figure 8 Schematic cross-sectional structure diagram of the guide wheel set of the present invention;

[0048] Figure 9 Stereoscopic structure diagram of the roller bump block assembly of the present invention;

[0049] Figure 10 Stereoscopic structure diagram of the brush assembly of the present invention;

[0050] Figure 11 Stereoscopic structure diagram of the nozzle assembly of the present invention;

[0051] Figure 12 Schematic diagram of two states when the detection wheel set of the present invention cooperates with the rail.

[0052] In the drawings, the list of components represented by each reference numeral is as follows:

[0053] 1. Inner frame; 11. Thread adjusting member; 12. Spring pin; 13. Button; 14. Pin head; 15. Roller bump block assembly; 16. Roller; 17. Guide rail; 18. Threaded shaft;

[0054] 2. Outer frame; 21. Guide shaft; 22. Guide post III; 23. Fixing bolt; 24. Connecting arm; 25. Hanging plate;

[0055] 3. Guide wheel set; 31. Guide wheel; 32. Bush; 321. Shaft retaining ring; 322. Inner spacer sleeve; 323. Outer spacer sleeve; 33. Connecting frame; 34. Sliding sleeve I; 35. Guide block; 36. Friction ring; 37. Brush assembly; 371. Brush fixing bracket; 372. Anti-rotation baffle; 373. Water pipe connecting pipe; 374. Brush; 38. Tensile spring; 381. Spring connecting rod; 39. Bearing;

[0056] 4. Probe wheel set; 41. Sprinkler head assembly; 42. Hoop; 43. Folding plate; 44. Sprinkler head;

[0057] 5. Swing angle adjusting mechanism; 51. Swing angle motor connecting frame; 52. Connecting plate; 53. Swing angle motor; 54. Slide block; 55. Rotating shaft; 56. Sliding sleeve II; 57. Limit groove;

[0058] 6. Lateral adjusting mechanism; 61. Lateral motor connecting plate; 62. Lateral motor; 63. Guide post I; 64. Guide post II; 65. Locking screw;

[0059] 7. Rail; 71. Lateral center line of rail; 72. Lateral center line of probe wheel. Specific embodiments

[0060] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The embodiments cited are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0061] As Figures 1 - 11 shown, a probe wheel bracket for a rail ultrasonic flaw detector in this embodiment includes:

[0062] An outer frame 2 connected to the detector vehicle frame, and a guide wheel set 3 is installed on the outer frame 2;

[0063] An inner frame 1 is installed above the outer frame 2 through a threaded adjusting member 11;

[0064] A swing angle adjusting mechanism 5, the swing angle adjusting mechanism 5 is horizontally slidably connected to the inner frame 1, and the driving end of the swing angle adjusting mechanism 5 is connected to the probe wheel set 4 and adjusts the deflection angle of the probe wheel set 4 relative to the lateral center plane of the rail;

[0065] A lateral adjusting mechanism 6, the lateral adjusting mechanism 6 is horizontally limited on the guide wheel set 3 and can move vertically relative to the guide wheel set 3, and the driving end of the lateral adjusting mechanism 6 is connected to the swing angle adjusting mechanism 5 and drives the swing angle adjusting mechanism 5 to drive the probe wheel set 4 to move horizontally along the inner frame 1;

[0066] Among them, by turning the threaded adjusting member 11, the vertical displacement amounts of the inner frame 1, the swing angle adjusting mechanism 5, the lateral adjusting mechanism 6, and the probe wheel set 4 are adjusted to realize the adjustment of the downward pressure amount of the probe wheel set 4 relative to the rail tread. After the downward pressure amount is adjusted in place, the lateral adjusting mechanism 6 and the guide wheel set 3 are locked and fixed.

[0067] As Figure 1 shown, a hanging plate 25 is provided on the outer frame 2, and the outer frame 2 is fixedly connected to the flaw detector vehicle frame through the hanging plate 25; specifically, hanging plates 25 are respectively arranged on both sides of the position on the outer frame 2 for connecting the threaded adjusting member 11. When the inner frame 1 is installed on the outer frame 2 from top to bottom, the hanging plate 25 can be partially blocked. Among them, the threaded adjusting member 11 can be a knob screw, and a nut is threadedly connected to the knob screw. The knob screw is threadedly connected to the inner frame 1 and the outer frame 2 respectively. After the vertical displacement amounts of each component are adjusted in place by the knob screw, the nut thereon is used for locking.

[0068] In this embodiment, the inner frame is installed above the outer frame through a threaded adjusting member. By turning the threaded adjusting member, the vertical displacement amounts of the inner frame and the swing angle adjusting mechanism, the lateral adjusting mechanism, and the probe wheel set installed thereon are adjusted to realize the adjustment of the downward pressure amount of the probe wheel set relative to the rail tread. After adjustment, it is locked and fixed to prevent the change of the downward pressure amount. The structure is simple and easy to implement, convenient for operation and later maintenance; before the flaw detector runs, the probe wheel set is adjusted to the preset flaw detection position by using the swing angle adjusting mechanism and the lateral adjusting mechanism. After the flaw detector runs, the lateral adjusting mechanism and the guide wheel set are cooperated to realize the follow-up function of the probe wheel set and the guide wheel set, so that the probe wheel set is always in the preset position of the rail central axis plane along with the change of the inner side surface of the rail.

[0069] Among them, as Figure 2 , Figure 4 and Figure 5 shown, the lateral adjusting mechanism 6 of this embodiment includes:

[0070] A lateral motor connecting plate 61, located on one side of the probe wheel set 4;

[0071] A lateral motor 62, horizontally installed on the lateral motor connecting plate 61, and its driving end is connected to the swing angle adjusting mechanism 5;

[0072] A first guide post 63, installed on the lateral motor connecting plate 61. A sliding sleeve 34 is provided on the guide wheel set 3, and the first guide post 63 can be vertically slidably placed in the sliding sleeve 34;

[0073] Among them, during the process of adjusting the downward pressure amount, the first guide post 63 vertically slides in the sliding sleeve 34. After the downward pressure amount is adjusted in place, the lateral motor connecting plate 61 and the guide wheel set 3 are locked and fixed.

[0074] The horizontal motor drives the swing angle adjusting mechanism and drives the detecting wheel set thereon to achieve horizontal movement, realizing the adjustment of the horizontal displacement L of the detecting wheel set. The horizontal motor connecting plate is installed on one side of the detecting wheel set, which facilitates the installation of the horizontal motor and the cooperation of the horizontal motor connecting plate with the first sliding sleeve and the locking structure on the guiding wheel set. After the downward pressure adjustment is in place, the horizontal motor connecting plate and the horizontal motor thereon can follow the movement of the guiding wheel set.

[0075] As Figure 2 、 Figure 4 and Figure 5 shown, in order to prevent the horizontal adjusting mechanism from shifting, a second horizontally arranged guiding column 64 is provided on the horizontal motor connecting plate 61, and a second sliding sleeve 56 is provided on the swing angle adjusting mechanism 5. The second guiding column 64 is horizontally slidably placed in the second sliding sleeve 56. Among them, in order to make the horizontal adjustment more stable, multiple second guiding columns 64 can also be provided. For example, a second guiding column 64 can be provided on each side of the horizontal motor 62. By providing the second guiding column on the horizontal motor connecting plate, when the horizontal motor makes a horizontal adjustment, it can make the swing angle adjusting mechanism move horizontally stably and prevent it from shifting.

[0076] As Figure 5 shown, there are two guiding wheel sets 3 in this embodiment, which are respectively located on the front and rear sides of the detecting wheel set 4. The two ends of the horizontal motor connecting plate 61 are respectively provided with the first guiding columns 63. Specifically, as Figure 4 shown, the horizontal motor connecting plate 61 is a curved structure similar to a bend and extends horizontally in the front and rear directions. The horizontal motor 62 is installed above the middle of the horizontal motor connecting plate 61 and its driving end extends horizontally. There are two first guiding columns 63, which are respectively vertically fixed at positions close to the two ends of the horizontal motor connecting plate 61. Open slots are respectively provided at the two ends of the horizontal motor connecting plate 61, and locking screws 65 are provided on the open slots. The locking screws penetrate through the two slot walls of the open slots, and the part of the guiding wheel set that is limited and fixed to the horizontal motor connecting plate can be placed in the open slots and locked and fixed by the locking screws 65. By respectively limiting and fixing the two ends of the horizontal motor connecting plate to the two guiding wheel sets, the connection of the horizontal adjusting mechanism is made more stable, and the driving of the swing angle adjusting mechanism and the detecting wheel set thereon to move horizontally is made more stable.

[0077] As Figure 1 、 Figure 3 and Figure 5 shown, a horizontally arranged guiding shaft 21 is provided on the outer frame 2 in this embodiment. The guiding wheel set 3 is rotatably connected to the guiding shaft 21 and can move axially along the guiding shaft 21;

[0078] Among them, as Figures 5 - 8As shown in the figure, the guide wheel set 3 includes a guide wheel 31, a bushing 32, and a connecting frame 33. The guide wheel 31 is rotatably connected to the bushing 32. The bushing 32 is sleeved on the guide shaft 21 and can slide axially along the guide shaft 21. The connecting frame 33 is installed on the bushing 32. The first sliding sleeve 34 is arranged on one side of the connecting frame 33 close to the lateral adjustment mechanism 6. After the pressing amount is adjusted in place, the lateral motor connecting plate 61 is locked and fixed to the connecting frame 33. The guide wheel set can rotate on the guide shaft and also move axially along the guide shaft. The connecting frame is used to realize the cooperative connection with the lateral adjustment mechanism. The connecting frame provides support for the guide wheel and does not affect the rotation of the guide wheel.

[0079] A specific solution for the guide wheel set in this embodiment is, as Figure 8 shown, the guide wheel 31 is rotatably connected to the outside of the bushing 32 through a bearing 39. The connecting frame 33 is in an inverted U-shaped structure and is erected above the guide wheel 31. The two side walls of the connecting frame 33 are respectively fixedly connected to both ends of the bushing 32. The bushing 32 is respectively limited to the connecting frame 33 through shaft retaining rings 321 on the outside of the connecting frame 33. The guide wheel 31 and the two side walls of the connecting frame 33 are spaced apart by an outer spacer sleeve 323. The guide wheel 31 is specifically rotatably connected to the bushing 32 through two bearings 39. An inner spacer sleeve 322 is provided on the bushing 32 between the two bearings 39. The first sliding sleeve 34 is provided on the outer wall of one side of the connecting frame 33 close to the lateral motor connecting plate 61. The first sliding sleeve 34 is located above the bushing 32.

[0080] As Figure 1 、 Figures 5 - 8As shown in the figure, one end of the bushing 32 close to the transverse motor connecting plate 61 is connected with guide blocks 35 respectively arranged in front of and behind the guide wheel 31. A friction ring 36 arranged on the same side as the guide blocks 35 is provided on the guide wheel 31. A brush assembly 37 is installed on the guide block 35 on the front side of the guide wheel 31. A horizontally arranged tension spring 38 is connected between the outer frame 2 and the connecting frame 33. The tension spring 38 is located on the side of the bushing 32 away from the transverse motor connecting plate 61. The friction ring is made of wear-resistant material to prevent the problem of frequent replacement of the overall guide wheel due to excessive wear of the guide wheel rim. The double-sided guide block structure outside the guide wheel is adopted, which is more reliable when entering the switch point reversely. The tension spring structure is adopted, which does not need to be sleeved on the sliding shaft, and the installation and disassembly are more convenient. The follow-up of the detection wheel bracket in this embodiment mostly relies on the guide wheel with a wheel rim and the compression spring installed on one side of the guide wheel rim. The guide wheel needs to rotate and also make a horizontal follow-up along the cross-section direction of the rail. In this embodiment, a tension spring is adopted. The tension spring is connected to the connecting frame and the outer frame through a spring connecting column. During the flaw detection operation, the tension spring always pulls the guide wheel group so that its friction ring always closely adheres to the inner side of the rail head to achieve the purpose of real-time follow-up with the change of the rail gauge. Since the outer frame 2 is in a square frame structure, its four corners respectively extend downward to form four connecting arms 24. Every two connecting arms arranged front and back are used to install the guide shaft 21. Spring connecting rods 381 are respectively provided on the connecting arms 24 on the left or right side of the outer frame 2. The spring connecting rods 381 are perpendicularly arranged to the vertically arranged connecting arms 24 and are located above the guide shaft 21. One end of a tension spring 38 is connected to each end of the spring connecting rod 381, and the other end of the tension spring 38 is connected to a side wall of the connecting frame 33. In this way, the structures of the outer frame 2 and the connecting frame 33 on the guide wheel provide effective structural support for the tension spring 38, and the slide rod structure does not need to be adopted, and the installation and later maintenance are very convenient.

[0081] Specifically, as Figure 10 shown, the brush assembly 37 includes a brush fixing frame 371, an anti-rotation baffle 372, a water pipe connecting pipe 373 and a brush 374. The brush fixing frame 371 is in an inverted L shape, one end of which is fixed above the guide block 35 outside the guide wheel 31, the brush 374 is fixed below the other end of the brush fixing frame 371, and the water pipe connecting pipe 373 is installed above the brush fixing frame 371 and communicated with the brush 374.

[0082] As Figure 2 shown, the swing angle adjusting mechanism 5 of this embodiment includes:

[0083] A swing angle motor connecting frame 51, located on one side of the detection wheel set 4, and the driving end of the horizontal adjusting mechanism 5 is connected to the swing angle motor connecting frame 51;

[0084] Connecting plates 52, with two connecting plates 52 located on the front and rear sides of the detector wheel set 4 respectively. A slider 54 is installed on the connecting plate 52, and a horizontally arranged guide rail 17 is installed on the inner frame 1. The slider 54 is in sliding fit with the guide rail 17; the lower ends of the connecting plates 52 on both sides of the detector wheel set 4 are respectively connected to a nozzle assembly 41;

[0085] A swing angle motor 53, which is installed on the swing angle motor connecting frame 51;

[0086] Wherein, the detector wheel set 4 is hinged between the two connecting plates 52, and the driving end of the swing angle motor 53 is connected to the upper end of the detector wheel set 4 and drives the detector wheel transverse center plane of the detector wheel set 4 to deflect a certain angle α relative to the rail transverse center plane of the rail 7. The rail transverse center plane is indicated by Figure 12 the rail transverse center line 71 therein, and the detector wheel transverse center plane is indicated by Figure 12 the detector wheel transverse center line 72 therein.

[0087] When the swing angle motor 53 is driven, the swing angle motor 53 will drive the detector wheel set 4 to perform a rotational movement between the two connecting plates 52 to achieve the purpose of adjusting the detector wheel angle. When the water pipe on the flaw detector is inserted into the quick-connect water pipe joint and the water pump on the flaw detector is driven, the coupling liquid can be sprayed onto the preset position on the surface of the rail head through the nozzle assembly.

[0088] Specifically, as shown in Figure 11 , the nozzle assembly 41 includes a folding plate 43, a hoop 42 and a nozzle 44. The folding plate 43 is installed at the lower end of the connecting plate 52 and is located below the rotating shaft 55. The nozzle 44 is installed on the folding plate 43 through the hoop 42 and its nozzle is arranged facing the detector wheel set 4.

[0089] As shown in Figure 1 , Figure 2 and Figure 9As shown, a vertically arranged spring pin 12 is installed on the inner frame 1 of this embodiment. A limiting groove 57 is provided at a position corresponding to the lower end of the spring pin 12 on the swing angle adjusting mechanism 5, and a roller bumper assembly 15 is installed outside the limiting groove 57. Among them, when assembling the swing angle adjusting mechanism 5, the swing angle adjusting mechanism 5 is pushed to slide along the inner frame 1, so that the roller 16 on the roller bumper assembly 15 presses the button 13 of the spring pin 12, and the pin head 14 of the spring pin 12 is placed in the limiting groove 57, realizing the assembly locking of the swing angle adjusting mechanism 5 and the detection wheel set 4. Specifically, a vertically arranged threaded shaft 18 is installed on the roller bumper assembly 15. The upper end of the threaded shaft 18 is connected with a roller 16. The roller 16 can rotate horizontally at the upper end of the threaded shaft 18. The roller bumper assembly 15 is fixed on the swing angle motor connecting frame 51 by a pin and is arranged on the same side as the connecting plate. By using the cooperation of the spring pin and the roller bumper assembly, when assembling the swing angle adjusting mechanism, with the pin head of the spring pin placed in the limiting groove, the swing angle adjusting mechanism, the detection wheel set, the lateral adjusting mechanism and the guide wheel set can be all limited at the preset positions. After the detection wheel support is integrally fixed on the flaw detector vehicle body, a gap is reserved between the guide block on the guide wheel set and the inner side surface of the rail head. It is very easy to place the guide block on the inner side of the rail. Then, manually lift the pull ring of the spring pin to make the pin head of the spring pin return to its original position. At this time, the guide wheel set tightly abuts against the inner side surface of the rail head under the action of the tension spring. When the flaw detection is completed, manually push the detection wheel set to move it horizontally towards the inner side of the rail head, so that the roller on the roller bumper assembly presses the button on the spring pin, and the pin head of the spring pin is placed in the limiting groove, realizing the re-locking of the swing angle adjusting mechanism and the detection wheel set, and making preparations for removing the detection wheel frame from the vehicle body.

[0090] As Figure 1 and Figure 3 As shown, the outer frame 2 of this embodiment is provided with a third guide post 22, and the inner frame 1 is provided with a guide hole. The inner frame 1 is installed on the outer frame 2 through the guiding fit between the guide hole and the third guide post 22, and a fastening nut is connected to the third guide post 22. In this embodiment, the third guide post 22 can be preferably arranged on the upper surface of the outer frame 2. By using the cooperation between the third guide post and the guide hole, when installing or adjusting the pressing amount of the inner frame and its upper structure, it can move along the vertical direction to avoid deviation. After the pressing amount is adjusted in place, the fastening nut can be used for locking and fixing.

[0091] Among them, the front-back direction of this embodiment is set according to the traveling direction of the guide wheel set and the detection wheel set along the rail. In addition, the "horizontally arranged", "horizontally moved", etc. in this embodiment are set relative to the direction perpendicular to the traveling direction.

[0092] The wheel probe bracket of this embodiment has a guiding and following function and a wheel probe position adjusting function. Before the flaw detector runs, the wheel probe is adjusted to the preset flaw detection position on the rail through the wheel probe adjusting function; after the flaw detector runs, through the following function of the wheel probe bracket, the wheel probe is always at the preset position on the central axis plane of the rail along with the change of the inner side of the rail. When passing through the turnout, the guiding structure of the following part can enable the wheel probe to pass smoothly.

[0093] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0094] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0095] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0097] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0098] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An ultrasonic flaw detector wheel support for rail, characterized in that, Including: An outer frame connected to the frame of the flaw detector, on which a set of guide wheels is installed; An inner frame, which is installed above the outer frame through a threaded adjusting member; A swing angle adjusting mechanism, which is horizontally slidably connected to the inner frame, and the driving end of the swing angle adjusting mechanism is connected to the probe wheel set and adjusts the deflection angle of the probe wheel set relative to the transverse center plane of the rail; A horizontal adjusting mechanism, which is horizontally limited on the guide wheel set and can vertically move relative to the guide wheel set, and the driving end of the horizontal adjusting mechanism is connected to the swing angle adjusting mechanism and drives the swing angle adjusting mechanism to drive the probe wheel set to move horizontally along the inner frame; Wherein, by turning the threaded adjusting member, the vertical displacement of the inner frame, the swing angle adjusting mechanism, the horizontal adjusting mechanism and the probe wheel set is adjusted to realize the adjustment of the pressing amount of the probe wheel set relative to the tread of the rail. After the pressing amount is adjusted in place, the horizontal adjusting mechanism is locked and fixed to the guide wheel set; The horizontal adjusting mechanism includes: A horizontal motor connecting plate, located on one side of the probe wheel set; A horizontal motor, which is horizontally installed on the horizontal motor connecting plate, and its driving end is connected to the swing angle adjusting mechanism; A first guide post, which is installed on the horizontal motor connecting plate, and a first sliding sleeve is provided on the guide wheel set, and the first guide post is vertically slidably placed in the first sliding sleeve; Wherein, during the adjustment of the pressing amount, the first guide post vertically slides in the first sliding sleeve. After the pressing amount is adjusted in place, the horizontal motor connecting plate is locked and fixed to the guide wheel set; The swing angle adjusting mechanism includes: A swing angle motor connecting frame, located on one side of the probe wheel set, and the driving end of the horizontal adjusting mechanism is connected to the swing angle motor connecting frame; Connecting plates, there are two connecting plates and they are respectively located on the front and rear sides of the probe wheel set. Sliders are installed on the connecting plates, and horizontally arranged guide rails are installed on the inner frame, and the sliders are slidably matched with the guide rails; A swing angle motor, which is installed on the swing angle motor connecting frame; Wherein, the probe wheel set is hinged between the two connecting plates, and the driving end of the swing angle motor is connected to the upper end of the probe wheel set and drives the probe wheel set to deflect a certain angle relative to the transverse center plane of the rail; A hanging plate is provided on the outer frame, and the outer frame is fixedly connected to the frame of the flaw detector through the hanging plate.

2. The wheel support of an ultrasonic rail flaw detector according to claim 1, characterized in that, A second horizontally arranged guide post is provided on the horizontal motor connecting plate, and a second sliding sleeve is provided on the swing angle adjusting mechanism, and the second guide post is horizontally slidably placed in the second sliding sleeve.

3. The wheel support of an ultrasonic rail flaw detector according to claim 1, characterized in that, There are two guide wheel sets and they are respectively located on the front and rear sides of the probe wheel set, and the first guide posts are respectively provided at both ends of the horizontal motor connecting plate.

4. The wheel support of an ultrasonic rail flaw detector according to claim 1, characterized in that, A horizontally arranged guide shaft is provided on the outer frame, and the guide wheel set is rotatably connected to the guide shaft and can axially move along the guide shaft; The guide wheel set includes a guide wheel, a bushing and a connecting frame. The guide wheel is rotatably connected to the bushing, the bushing is sleeved on the guide shaft and can axially slide along the guide shaft, the connecting frame is installed on the bushing, and the first sliding sleeve is provided on the side of the connecting frame close to the horizontal adjusting mechanism; after the pressing amount is adjusted in place, the horizontal motor connecting plate is locked and fixed to the connecting frame.

5. The wheel support of an ultrasonic rail flaw detector according to claim 4, characterized in that, One end of the bushing close to the transverse motor connecting plate is connected with guide blocks respectively arranged in front of and behind the guide wheel. A friction ring arranged on the same side as the guide block is provided on the guide wheel. A brush assembly is installed on the guide block located on the front side of the guide wheel. A horizontally arranged tension spring is connected between the outer frame and the connecting frame. The tension spring is located on the side of the bushing away from the transverse motor connecting plate.

6. The wheel support of an ultrasonic rail flaw detector according to claim 1, characterized in that, Nozzles assemblies are respectively connected to the lower ends of the connecting plates on both sides of the detector wheel set.

7. The wheel support of an ultrasonic rail flaw detector according to any one of claims 1 to 6, characterized in that, A vertically arranged spring pin is installed on the inner frame. A limit groove is formed at a position corresponding to the lower end of the spring pin on the swing angle adjusting mechanism. A roller collision block assembly is installed outside the limit groove. During the assembly of the swing angle adjusting mechanism, the swing angle adjusting mechanism is pushed to slide along the inner frame, so that the roller on the roller collision block assembly presses the button of the spring pin, and the pin head of the spring pin is placed in the limit groove to realize the assembly locking of the swing angle adjusting mechanism and the detector wheel set.

8. The wheel support of an ultrasonic rail flaw detector according to any one of claims 1 to 6, characterized in that, A third guide post is provided on the outer frame, and a guide hole is provided on the inner frame. The inner frame is installed on the outer frame through the guiding fit of the guide hole and the third guide post. A fastening nut is connected to the third guide post.

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