Head support structure of steel rail flaw detector

By combining a gimbal base, a rotating base, a pitch support, and a damping rotating component, the problem of unstable pitch support rotation during the use of the rail flaw detector is solved, achieving stable angle support and safe operation.

CN223595532UActive Publication Date: 2025-11-25CHINA RAILWAY SHANGHAI BUREAU GRP CO LTD HEFEI PUBLIC WORKS SECTION +1
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Patent Information

Application Number
CN202520184790.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-06
Publication Date
2025-11-25
Estimated Expiration
2035-02-06

AI Technical Summary

Technical Problem

During the use of existing rail flaw detectors, the pitch support is prone to rotating or flipping due to the damping effect, which causes changes in the angle of the flat panel host, affecting operation and safety.

Method used

It adopts a combination structure of gimbal base, rotating base, pitch support, damping rotating component and toothed rotating reinforcement component. The damping rotating component provides stable support, and the toothed rotating reinforcement component enhances the connection strength, so as to achieve stable pitch angle and 360° rotation.

Benefits of technology

Maintaining the stability of the rail flaw detector's main unit during bumpy conditions prevents collisions, facilitates operation and observation, and enhances safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of steel rail nondestructive inspection, and discloses a steel rail flaw detector machine head support structure which comprises a holder base, a rotating base, a pitching support, a damping rotating piece and a tooth-shaped rotating reinforcing piece. One end of the pitching support is connected with one end of the rotating base through the damping rotating piece, and the other end of the pitching support is connected with the other end of the rotating base through the tooth-shaped rotating reinforcing piece. According to the utility model, the pitching bracket is stably kept at a required pitching angle, and especially in the advancing process of the steel rail flaw detector, although a road section is bumpy, the pitching bracket does not easily rotate in the moving process to cause the angle change of a main machine of the steel rail flaw detector, so that an operator can conveniently use and observe the steel rail flaw detector, and the working efficiency is improved. And the safety of the steel rail flaw detector host is ensured. The steel rail flaw detector further has the advantage that pitching angle operation is flexible and convenient, horizontal plane 360-degree rotation and pitching 90-degree rotation can be achieved, and a limiting device of the pitching support can play a role in preventing a steel rail flaw detector main machine from being collided by mistake.
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Description

TECHNICAL FIELD

[0001] The utility model relates to railway rail nondestructive flaw detection technical field, concretely relates to a rail flaw detector machine head support structure. BACKGROUND

[0002] Railway transportation is one of the most effective land traffic modes at present, and undertakes heavy passenger and freight transport tasks. Rails are important components of tracks. During acceleration, braking, and passing through rail joints, curves and switches, the rails are subjected to friction, extrusion, bending and impact, and under these long-term repeated actions, the rails will produce various fatigue damages, for example, due to long-term bearing of train load, nuclear damage will occur at the head of the rail, screw hole cracks will occur at the screw hole of the rail joint, and rail bottom cracks will occur at the bottom of the rail. All these rail damages will be aggravated with the operation of the train, and when they develop to a certain extent, they will cause rail fracture, and even lead to train derailment, causing serious safety accidents.

[0003] Therefore, in order to ensure train operation safety, a rail flaw detector needs to be used to detect rail damage before it develops to a level that affects train operation safety, and the rail where the damage occurs needs to be replaced.

[0004] The rail flaw detector in the prior art has the following disadvantages: when the rail flaw detector is used for rail flaw detection, a rail flaw detector main machine needs to be configured and installed at the same time. When the rail flaw detector main machine adopts a flat main machine form, a conventional pitch support relying only on damping action is used for support. Since the rail flaw detector will bounce along the rail during pushing, the pitch support is prone to rotation during movement to overcome the damping action, thereby changing the angle of the flat main machine, which is inconvenient for the operator to use and observe. In severe cases, the pitch support can even turn to a flat form, thereby causing the flat main machine to collide and be easily damaged. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model provides a rail flaw detector machine head support structure, which can effectively solve the above problems.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a rail flaw detector machine head support structure, which comprises a holder base (1), a rotating base (2), a pitch support (3), a damping rotating part (4) and a tooth-shaped rotating reinforcing part (5).

[0008] The gimbal base (1) is fixed with the support platform (6); the upper surface of the gimbal base (1) is rotatably mounted with the rotating base (2) along the vertical axis, the left base ear plate (2-1) of the rotating base (2) is rotatably connected with the left support ear plate (3-1) of the tilt support (3) along the horizontal axis through the damping rotating part (4); the right base ear plate (2-2) of the rotating base (2) is rotatably connected with the right support ear plate (3-2) of the tilt support (3) along the horizontal axis through the gear-shaped rotating reinforcing part (5); the outer surface of the tilt support (3) supports and installs the rail flaw detector main machine (7).

[0009] Preferably, the damping rotating part (4) comprises a damping washer (4-1) and a horizontal rotating shaft (4-2);

[0010] The horizontal rotating shaft (4-2) between the left base ear plate (2-1) and the left support ear plate (3-1) is provided with the damping washer (4-1) sleeved on the outer surface of the horizontal rotating shaft (4-2).

[0011] Preferably, the gear-shaped rotating reinforcing part (5) comprises a first gear-shaped fixed seat (5-1), a second gear-shaped fixed seat (5-2), a first bolt (5-3) and a first hand screw nut (5-4);

[0012] The right support ear plate (3-2) is coaxially located on the inner side of the right base ear plate (2-2); the first gear-shaped fixed seat (5-1) and the second gear-shaped fixed seat (5-2) are coaxially arranged between the right support ear plate (3-2) and the right base ear plate (2-2), and the first gear-shaped fixed seat (5-1) is close to the right support ear plate (3-2) and fixed with the outer surface of the right support ear plate (3-2); the second gear-shaped fixed seat (5-2) is close to the right base ear plate (2-2) and fixed with the inner side of the right base ear plate (2-2); the opposite surfaces of the first gear-shaped fixed seat (5-1) and the second gear-shaped fixed seat (5-2) are respectively provided with intermeshing teeth;

[0013] The shaft center of the right support ear plate (3-2), the first gear-shaped fixed seat (5-1), the second gear-shaped fixed seat (5-2) and the right base ear plate (2-2) passes through the first bolt (5-3), and the first hand screw nut (5-4) is screwed at the end of the first bolt (5-3).

[0014] Preferably, the right side of the bracket ear plate (3-2) is provided with a through hole (3-2-1) for the first bolt (5-3) to pass through, and when the right side of the bracket ear plate (3-2) rotates, the first bolt (5-3) is driven to rotate synchronously under the action of the through hole (3-2-1); the first bolt (5-3) can freely slide in the axial direction.

[0015] Preferably, the through hole (3-2-1) is a rectangular hole; the cross section of the first bolt (5-3) at the position passing through the through hole (3-2-1) is a rectangular shape matched with the through hole (3-2-1).

[0016] Preferably, the opposite surfaces of the first tooth-shaped fixing seat (5-1) and the second tooth-shaped fixing seat (5-2) are provided with one tooth every 15 degrees in the circumferential direction.

[0017] Preferably, the holder base (1) is horizontally arranged, the holder base (1) is provided with a holder base through hole, and the support platform (6) is fixed through a holder base bolt (8) passing through the holder base.

[0018] Preferably, the holder base (1) and the rotating base (2) are connected through a second bolt (9) and a second hand nut (10).

[0019] Preferably, the back of the rail flaw detector main machine (7) is fixed with a main machine support (11); the main machine support (11) is hung on the top of the pitch support (3), so that the pitch support (3) supports the rail flaw detector main machine (7).

[0020] Preferably, the middle part of the pitch support (3) is provided with a bolt mounting hole (3-3); after the third bolt (12) passes through the bolt mounting hole (3-1), it is screwed into the back of the rail flaw detector main machine (7), so that the pitch support (3) and the rail flaw detector main machine (7) are fixed.

[0021] The rail flaw detector head support structure provided by the utility model has the following advantages:

[0022] The utility model provides a kind of rail flaw detector machine head support structure, it is a kind of support structure suitable for rail flaw detector supporting rail flaw detector host computer, can be stably kept at the pitch angle needed, to realize the support effect of rail flaw detector host computer further, especially in the rail flaw detector advancing process, although section of road jolts, pitch support also cannot easily rotate in moving process and make the angle of rail flaw detector host computer change, to facilitate operator use and observation, and guarantee the security of rail flaw detector host computer, avoid collision due to free rotation.This application also has the advantage that pitch angle is operated flexible and convenient, can realize the rotation of horizontal plane 360 ° and the rotation of pitch 90 °, and the limiting device of pitch support can play the role of preventing rail flaw detector host computer from colliding. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The use mode schematic diagram of the rail flaw detector machine head support structure provided by the utility model is shown;

[0024] Figure 2 The perspective view of the rail flaw detector machine head support structure provided by the utility model is shown;

[0025] Figure 3 The bottom view of the rail flaw detector machine head support structure provided by the utility model is shown;

[0026] Figure 4 The perspective view of the damping rotating part provided by the utility model is shown;

[0027] Figure 5 The perspective view of the gear-shaped rotating reinforcing part provided by the utility model is shown;

[0028] Figure 6 The perspective view of the gear-shaped fixing seat provided by the utility model is shown;

[0029] Figure 7 The perspective view of the first bolt provided by the utility model is shown;

[0030] Figure 8 The perspective view of the rotating base provided by the utility model is shown;

[0031] Figure 9 The perspective view of the pitch support provided by the utility model is shown.

[0032] Among them:

[0033] 1, gimbal base;2, rotating base;3, pitch support;4, damping rotating part;5, gear-shaped rotating reinforcing part;6, support platform;7, rail flaw detector host computer;8, gimbal base bolt;9, second bolt;10, second hand screw nut;11, host support;12, third bolt;

[0034] 2-1, base left side ear plate; 2-2, base right side ear plate; 3-1, support left side ear plate; 3-2, support right side ear plate; 3-3, bolt mounting hole; 4-1, damping washer; 4-2, horizontal rotating shaft; 5-1, first tooth-shaped fixed seat; 5-2, second tooth-shaped fixed seat; 5-3, first bolt; 5-4, first hand nut;

[0035] 3-2-1, through hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only one embodiment of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0037] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" are the directions or position relations shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting the utility model in that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation of the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] Referring to Figures 1-9 The utility model provides a kind of rail flaw detector head support structure, including holder base 1, rotating base 2, pitch support 3, damping rotating piece 4 and tooth profile rotating reinforcement 5;

[0040] As Figure 1 , holder base 1 is fixed with support platform 6, support platform 6 can be the equipment on rail flaw detector, for example, it is rail flaw detector controller etc., it is the basic platform structure for installing rail flaw detector host computer, a fixed mode is as follows: Figure 3The gimbal base 1 is horizontally arranged, the gimbal base 1 is provided with a gimbal base through hole, and the gimbal base bolt 8 is arranged through the gimbal base through hole and fixed with the support platform 6.

[0041] The upper surface of the gimbal base 1 is rotatably arranged along a vertical axis with the rotating base 2, and a mounting mode is that the gimbal base 1 and the rotating base 2 are assembled and connected through the second bolt 9 and the second hand nut 10.

[0042] The base left side ear plate 2-1 of the rotating base 2 is rotatably connected with the support left side ear plate 3-1 of the pitching support 3 along a horizontal axis through the damping rotating part 4, the base right side ear plate 2-2 of the rotating base 2 is rotatably connected with the support right side ear plate 3-2 of the pitching support 3 along a horizontal axis through the gear-shaped rotating reinforcing part 5, the outer surface of the pitching support 3 supports and mounts the rail flaw detector main machine 7, for example, the back surface of the rail flaw detector main machine 7 is fixed with the main machine support 11, the main machine support 11 is hung on the top of the pitching support 3, and the pitching support 3 supports the rail flaw detector main machine 7, and of course, the pitching support 3 can be connected with the main machine support 11 through four bolts.

[0043] In addition, in order to further strengthen the combination reliability of the rail flaw detector main machine 7 and the pitching support 3, the middle part of the pitching support 3 is provided with the bolt mounting hole 3-3, the third bolt 12 is arranged through the bolt mounting hole 3-1, and then screwed into the back surface of the rail flaw detector main machine 7, so that the pitching support 3 and the rail flaw detector main machine 7 are fixed.

[0044] In the utility model, the pitching support 3 can be adjusted relative to the rotating base 2, so that the pitch angle of the rail flaw detector main machine 7 is adjusted, the damping rotating part 4 and the gear-shaped rotating reinforcing part 5 play a role at the same time when the pitching support 3 is rotated relative to the rotating base 2 and the pitch angle is adjusted.

[0045] In combination Figure 2 , Figure 4 , Figure 8 and Figure 9The damping rotating part 4 comprises a damping washer 4-1 and a horizontal rotating shaft 4-2, which can be realized by a lock nut; the horizontal rotating shaft 4-2 is arranged between the left side ear plate 2-1 of the base and the left side ear plate 3-1 of the support and can rotate freely; the outer surface of the horizontal rotating shaft 4-2 is sleeved with the damping washer 4-1 arranged between the left side ear plate 2-1 of the base and the left side ear plate 3-1 of the support; the distance between the left side ear plate 2-1 of the base and the left side ear plate 3-1 of the support is adjusted by the lock nut, so that different pressures are applied to the damping washer 4-1, and the damping force of the damping washer 4-1 is adjusted. Therefore, when the tilting support 3 rotates around the horizontal rotating shaft 4-2 relative to the rotating base 2, the damping washer 4-1 is pressed against the left side ear plate 3-1 of the support, so that a damping force is applied to the tilting support 3, and the rotation of the tilting support 3 is more stable. At the same time, when the tilting support 3 rotates to the target position, the damping force of the damping washer 4-1 can keep the tilting support 3 at the target position.

[0046] In combination Figure 2 and Figure 5 The tooth-shaped rotating reinforcing part 5 comprises a first tooth-shaped fixed seat 5-1, a second tooth-shaped fixed seat 5-2, a first bolt 5-3 and a first hand nut 5-4.

[0047] The right side ear plate 3-2 of the support is coaxially arranged inside the right side ear plate 2-2 of the base; the first tooth-shaped fixed seat 5-1 and the second tooth-shaped fixed seat 5-2 are coaxially arranged between the right side ear plate 3-2 of the support and the right side ear plate 2-2 of the base; the first tooth-shaped fixed seat 5-1 is close to the right side ear plate 3-2 of the support and is fixed to the outer surface of the right side ear plate 3-2 of the support, for example, by a bolt; the second tooth-shaped fixed seat 5-2 is close to the right side ear plate 2-2 of the base and is fixed to the inner surface of the right side ear plate 2-2 of the base, for example, by a bolt; the opposite surfaces of the first tooth-shaped fixed seat 5-1 and the second tooth-shaped fixed seat 5-2 are respectively provided with teeth that can mesh with each other; as shown in Figure 6 FIG. 4 is a perspective view of the tooth-shaped fixed seat.

[0048] The axis of the right side ear plate 3-2 of the support, the first tooth-shaped fixed seat 5-1, the second tooth-shaped fixed seat 5-2 and the right side ear plate 2-2 of the base penetrates through the first bolt 5-3, and the first hand nut 5-4 is screwed at the end of the first bolt 5-3.

[0049] Therefore, when it is necessary to adjust the tilting angle of the tilting support 3, the first hand nut 5-4 is first loosened to release the fastening force on the right side ear plate 3-2 of the support, the first tooth-shaped fixed seat 5-1, the second tooth-shaped fixed seat 5-2 and the right side ear plate 2-2 of the base; then, the tilting support 3 is rotated around the first bolt 5-3; when the tilting support 3 rotates around the first bolt 5-3, the right side ear plate 3-2 of the support and the first tooth-shaped fixed seat 5-1 rotate together around the first bolt 5-3, while the second tooth-shaped fixed seat 5-2 and the right side ear plate 2-2 of the base are stationary;

[0050] Once rotated to the correct position, the first toothed fixing seat 5-1 and the second toothed fixing seat 5-2 engage. Then, tighten the first hand-tightening nut 5-4. Under the action of the first bolt 5-3, the right ear plate 3-2 of the bracket, the first toothed fixing seat 5-1, the second toothed fixing seat 5-2, and the right ear plate 2-2 of the base are secured. Furthermore, since the first toothed fixing seat 5-1 and the second toothed fixing seat 5-2 are engaged, the bonding strength between the first toothed fixing seat 5-1 and the second toothed fixing seat 5-2 is enhanced. This, in turn, enhances the bonding strength between the pitch bracket 3 and the rotating base 2, ensuring that the pitch bracket 3 remains stably in the target position and does not easily rotate relative to the rotating base 2, thus changing the pitch angle of the pitch bracket 3.

[0051] Furthermore, for ease of operation, a through hole 3-2-1 is provided on the axis of the right ear plate 3-2 of the bracket for the first bolt 5-3 to pass through. When the right ear plate 3-2 of the bracket rotates, the through hole 3-2-1 causes the first bolt 5-3 to rotate synchronously; the first bolt 5-3 can slide freely along the axial direction. For example, as... Figure 9 As shown, through hole 3-2-1 is a rectangular hole; the cross-section of the first bolt 5-3 at the position where it passes through through hole 3-2-1 is a rectangular shape that matches the through hole 3-2-1, as shown. Figure 7 The diagram shown is a structural diagram of the first bolt 5-3.

[0052] With this structure, the first bolt 5-3 can only slide freely along the axial direction relative to the right ear plate 3-2 of the bracket, but cannot rotate freely. Therefore, when tightening and loosening the first hand-tightening nut 5-4 at the end of the first bolt 5-3, since the first bolt 5-3 will not rotate, it can be tightened and loosened with only one hand, which is convenient for operators.

[0053] In this invention, the opposing surfaces of the first toothed fixing seat 5-1 and the second toothed fixing seat 5-2 are provided with meshing teeth. For example, one tooth is provided every 15 degrees along the circumference. On the one hand, the meshing action of the teeth enhances the bonding strength between the pitch support 3 and the rotating base 2. On the other hand, since the teeth of the first toothed fixing seat 5-1 and the second toothed fixing seat 5-2 must mesh with each other when adjusting the pitch angle of the pitch support 3, and each tooth has a degree, the final pitch angle is the angle corresponding to each tooth. Therefore, by adjusting the number of teeth, the pitch angle can be adjusted at equal intervals.

[0054] Furthermore, in this application, such as Figure 2 As shown, the bottom of the left ear plate 3-1 and the right ear plate 3-2 of the pitch support 3 can be raised to achieve the limiting function of pitch angle adjustment of the pitch support 3.

[0055] In practical applications, each hand nut in the application can be a character-shaped hand nut.

[0056] The utility model provides a rail flaw detector machine head support structure has the following characteristics and advantages:

[0057] One end of the pitch support is connected to one end of the rotating base through a damping rotating part, and the other end of the pitch support is connected to the other end of the rotating base through a tooth-shaped rotating reinforcing part, the damping effect of the pitch support during rotation is increased by setting the damping rotating part, which can prevent the pitch support from suddenly falling and causing the rail flaw detector main machine to be hit by mistake, and the combination strength of the pitch support and the rotating base is increased by setting the tooth-shaped rotating reinforcing part, so that the pitch support can be stably kept at the target position and will not easily rotate relative to the rotating base to change the pitch angle of the pitch support.

[0058] The cloud platform base and the rotating base are connected through a character-shaped hand nut and a bolt, the rotating base can rotate by 360 degrees after the character-shaped hand nut is loosened, so as to adjust the horizontal direction;

[0059] The pitch support can be adjusted by 90 degrees in the pitch angle after the character-shaped hand nut between the pitch support and the rotating base is loosened, and the limiting effect of the pitch support is achieved when the pitch angle is adjusted to 0 degrees, so as to prevent the rail flaw detector main machine from being damaged by mistake.

[0060] The pitch support is fixed with the rail flaw detector main machine through a bolt, and the reinforcing effect is achieved through a plum-blossom-shaped hand bolt.

[0061] The rail flaw detector main machine is installed on the main machine support and rotates with the pitch support, so as to adjust the pitch angle.

[0062] The rail flaw detector machine head support structure provided by the utility model has the following advantages:

[0063] The rail flaw detector machine head support structure provided by the utility model is a support structure suitable for supporting the rail flaw detector main machine, can be stably kept at the required pitch angle, and can realize the supporting effect on the rail flaw detector main machine, especially during the movement of the rail flaw detector, although the road is bumpy, the pitch support will not easily rotate during movement to change the angle of the rail flaw detector main machine, so as to facilitate the use and observation of the operator and ensure the safety of the rail flaw detector main machine and avoid collision caused by free rotation.

[0064] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A rail flaw detector head support structure, characterized in that, It includes a gimbal base (1), a rotating base (2), a pitch support (3), a damping rotating component (4), and a toothed rotating reinforcement component (5); The gimbal base (1) is fixed to the support platform (6); the rotating base (2) is rotatably mounted on the top of the gimbal base (1) along the vertical axis; the left ear plate (2-1) of the base of the rotating base (2) is rotatably connected to the left ear plate (3-1) of the support of the pitch support (3) along the horizontal axis through the damping rotating member (4); the right ear plate (2-2) of the base of the rotating base (2) is rotatably connected to the right ear plate (3-2) of the support of the pitch support (3) along the horizontal axis through the toothed rotating reinforcing member (5); the rail flaw detector host (7) is mounted on the outside of the pitch support (3).

2. The rail flaw detector head support structure according to claim 1, characterized in that, The damping rotating component (4) includes a damping washer (4-1) and a horizontal rotating shaft (4-2); A horizontal rotating shaft (4-2) that can rotate freely is provided between the left ear plate (2-1) of the base and the left ear plate (3-1) of the bracket; a damping washer (4-1) is sleeved on the outer surface of the horizontal rotating shaft (4-2) between the left ear plate (2-1) of the base and the left ear plate (3-1) of the bracket.

3. The rail flaw detector head support structure according to claim 1, characterized in that, The toothed rotating reinforcement (5) includes a first toothed fixing seat (5-1), a second toothed fixing seat (5-2), a first bolt (5-3), and a first hand-tightening nut (5-4); The right ear plate (3-2) of the bracket is coaxially located inside the right ear plate (2-2) of the base; the first toothed fixing seat (5-1) and the second toothed fixing seat (5-2) are coaxially arranged between the right ear plate (3-2) of the bracket and the right ear plate (2-2) of the base, and the first toothed fixing seat (5-1) is close to the right ear plate (3-2) of the bracket and fixed to the outer surface of the right ear plate (3-2) of the bracket; the second toothed fixing seat (5-2) is close to the right ear plate (2-2) of the base and fixed to the inner surface of the right ear plate (2-2) of the base; the opposing surfaces of the first toothed fixing seat (5-1) and the second toothed fixing seat (5-2) are respectively provided with meshing teeth; The axis of the right ear plate (3-2) of the bracket, the first toothed fixing seat (5-1), the second toothed fixing seat (5-2) and the right ear plate (2-2) of the base passes through the first bolt (5-3), and the first hand-tightening nut (5-4) is screwed on the end of the first bolt (5-3).

4. The rail flaw detector head support structure according to claim 3, characterized in that, The right ear plate (3-2) of the bracket has a through hole (3-2-1) at its axis for the first bolt (5-3) to pass through. When the right ear plate (3-2) of the bracket rotates, the first bolt (5-3) rotates synchronously under the action of the through hole (3-2-1). The first bolt (5-3) can slide freely along the axial direction.

5. The rail flaw detector head support structure according to claim 4, characterized in that, The through hole (3-2-1) is a rectangular hole; the cross-section of the first bolt (5-3) at the position where it passes through the through hole (3-2-1) is a rectangular shape that matches the through hole (3-2-1).

6. The rail flaw detector head support structure according to claim 3, characterized in that, The opposing surfaces of the first toothed fixing seat (5-1) and the second toothed fixing seat (5-2) are provided with one tooth every 15 degrees along the circumferential direction.

7. The rail flaw detector head support structure according to claim 1, characterized in that, The gimbal base (1) is horizontally positioned and has a gimbal base through hole. It is fixed to the support platform (6) by a gimbal base bolt (8) passing through the gimbal base.

8. The rail flaw detector head support structure according to claim 1, characterized in that, The gimbal base (1) and the rotating base (2) are connected by a second bolt (9) and a second hand-tightened nut (10).

9. The rail flaw detector head support structure according to claim 1, characterized in that, The back of the rail flaw detector main unit (7) is fixed with a main unit bracket (11); the main unit bracket (11) is suspended from the top of the pitch bracket (3), so that the pitch bracket (3) supports the rail flaw detector main unit (7).

10. The rail flaw detector head support structure according to claim 1, characterized in that, The pitch support (3) has a bolt mounting hole (3-3) in the middle. After the third bolt (12) passes through the bolt mounting hole (3-3), it is screwed into the back of the rail flaw detector main unit (7) to fix the pitch support (3) and the rail flaw detector main unit (7).