Trolley hub mechanism of high-speed rail rapid track geometric state detector

Abstract

The utility model discloses a wheel hub mechanism of a high-speed rail geometric state detector trolley, relates to the field of rail traffic detection equipment, and can solve the problems that the wheel hub mechanism of an existing detector trolley is prone to rotating unbalance, axis deviation and axial movement in the high-speed running process of a detector. Through the design that the angular contact bearing and the wheel ring part are matched with the rolling wheel, the unbalance in the rotating process of the hub can be effectively reduced, and the connecting shaft part, the angular contact bearing and other precise accessories are adopted, so that the axis deviation is reduced. And under the precise matching of the bearing and the connecting shaft, the axle center of the hub can be kept stable in the whole working process, so that the conditions of poor contact and instability between the hub and a rail caused by axle center deviation in the prior art are avoided. In addition, a fourth bolt and a second bolt are fixed in a fastening mode, axial movement is effectively prevented, and accurate control over the position of the hub is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit detection equipment field, concretely relates to a high -speed rail rapid track geometric state detector trolley wheel hub mechanism. BACKGROUND

[0002] With the continuous expansion of high-speed railway network and the improvement of high-speed rail transport speed, the geometric state monitoring of the track becomes particularly important. As a kind of key equipment, track geometric state detector (abbreviation "detector") can detect the flatness, gauge, super-geometric parameters of track with high precision, and provide guarantee for the safety and operation efficiency of railway. The wheel hub mechanism of detector trolley is an important part of track detection, and its stability and precision directly affect the accuracy and reliability of detection results.

[0003] At present, high-speed train runs at hundreds of kilometers per hour, and the trolley of track geometric state detector needs to measure with high precision under high-speed motion condition when performing tasks. Due to the high-speed motion of detection trolley, any rotation imbalance of wheel hub, axial deviation or unstable structure may cause measurement error of track geometric data, and in the process of high-speed running of detector, the wheel hub structure will bear large dynamic load, especially in the process of rapid start, braking and turning. The detection trolley wheel hub needs to cope with the continuous impact and friction force between the ground, track and wheel. High-strength motion and long-term load may cause looseness between wheel hub components, and then easily produce axial movement, affecting the precision and operation safety of the whole vehicle system. UTILITY MODEL CONTENT

[0004] In order to solve the problem of rotation imbalance, axial deviation and axial movement of the wheel hub mechanism of existing detector trolley in the process of high-speed running of detector, the present application provides a high-speed rail rapid track geometric state detector trolley wheel hub mechanism to solve the above problems.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A high-speed rail rapid track geometric state detector trolley wheel hub mechanism, comprising a detection trolley, a steel rail and a connecting seat component, the connecting seat component comprises a connecting base and a first bolt, the connecting base is a U-shaped clamping seat, a plurality of connecting holes are formed in the top surface of the connecting base, the detection trolley is installed on the top surface of the connecting base through the connecting holes, further comprising a connecting component, a rolling wheel and a connecting shaft component;

[0007] The connecting component comprises a first connecting piece, a second connecting piece and a plurality of second bolts, the first connecting piece and the second connecting piece are respectively screwed at the bottom end of the connecting base through the first bolt, and are fastened through the second bolt.

[0008] The connecting shaft component comprises a connecting shaft and fourth bolts, the fourth bolts are provided with two and are screwed in the first connecting piece and the second connecting piece respectively, the connecting shaft is fixed in the connecting base through the fourth bolts, angular contact bearings and a wheel ring component are further provided on the connecting shaft, the angular contact bearings are provided with two and are rotatably connected to the outer wall of the connecting shaft, the wheel ring component is detachably connected to the outer wall of the two angular contact bearings, and the rolling wheels are sleeved on the outer wall of the rolling wheels.

[0009] The connecting component and the wheel ring component are further connected with detection components and transmission components respectively, one end of the transmission component is connected with a data sensing component, and the data sensing component and the detection component are electrically connected.

[0010] As a further improvement of the utility model, the wheel ring component comprises a first wheel ring, a second wheel ring and a fifth bolt, the first wheel ring and the second wheel ring are sleeved on the outer wall of the angular contact bearing groove respectively, and the fifth bolt is provided with four and is used for fixedly connecting the first wheel ring and the second wheel ring.

[0011] As a further improvement of the utility model, a step is protruded outside the second wheel ring, one end of the transmission component is mounted on the step, and the first wheel ring and the second wheel ring are both made of aluminum alloy material.

[0012] As a further improvement of the utility model, the transmission component comprises a belt protective cover, a first toothed belt wheel, a second toothed belt wheel and a transmission belt, the second toothed belt wheel is mounted on the step, the first toothed belt wheel is connected with the data sensing component, the transmission belt is connected with the first toothed belt wheel and the second toothed belt wheel at two ends respectively, the belt protective cover surrounds the first toothed belt wheel, the second toothed belt wheel and the transmission belt, and is fixedly connected with the second connecting piece.

[0013] As a further improvement of the utility model, the number of teeth of the first toothed belt wheel and the second toothed belt wheel is 25 and 50 respectively.

[0014] As a further improvement of the utility model, the data sensing component comprises an odometer protective cover and an odometer encoder, the odometer encoder is connected with the first toothed belt wheel, the odometer protective cover surrounds the odometer encoder and is screwed with the belt protective cover, a lead wire is further provided on the odometer encoder, and the lead wire is electrically connected with a control module on the detection trolley through the outer wall of the odometer protective cover.

[0015] As a further improvement of the utility model, the detection component comprises a top wheel shaft, a plurality of third bolts, a top wheel, steel bearings and gaskets, the top wheel shaft is screwed to the bottom surface of the first connecting piece through a plurality of third bolts, two steel bearings and two gaskets are arranged, the steel bearings are arranged on the circular groove surface of the lower part of the top wheel shaft, the top wheel is rotatably connected to the outside of the steel bearing and is in contact with the steel rail, the bottom of the top wheel shaft is further provided with a locking nut, the locking nut is located below the steel bearing, and the gaskets are arranged between the steel bearing and the locking nut.

[0016] As a further improvement of the utility model, four locking holes are further arranged in the locking nut in a circumferential array, a locking screw is screwed in each locking hole, and the locking screw is in contact with the outer wall of the top wheel shaft.

[0017] As a further improvement of the utility model, the rolling wheel and the top wheel are both made of ceramic material.

[0018] Compared with the prior art, the technical scheme of the utility model has the following advantages and effects:

[0019] 1. In the application, the design of the angular contact bearing, the wheel ring component and the rolling wheel can effectively reduce the imbalance during the rotation of the hub, the use of the connecting shaft component and the angular contact bearing and other precision parts helps to reduce the shaft center deviation. Under the precise cooperation of the bearing and the connecting shaft, the shaft center can be kept stable during the entire working process of the hub, thereby avoiding the poor contact and instability of the hub and the track caused by the shaft center deviation in the traditional technology. In addition, the fourth bolt and the second bolt in the application are fixed by fastening, which effectively prevents the axial movement and ensures the precise control of the position of the hub.

[0020] 2. In the application, the number of teeth of the first toothed belt wheel and the second toothed belt wheel is 25 and 50 respectively. Through the above tooth number design, good power transmission is realized. When the transmission ratio is 2, the transmission system can reduce the speed while increasing the torque, ensuring that the high-speed rail detection instrument can work efficiently and stably during high-speed operation. At the same time, the belt protection cover effectively protects the transmission system, reduces the interference of the external environment and ensures the long-term stable operation of the transmission system.

[0021] 3. The data sensing component in the application can accurately record the driving distance and speed of the trolley, thereby providing accurate data for the detection of the geometric state of the track. The direct connection of the mileage encoder and the first toothed belt wheel ensures the reliability and real-time performance of the detection data, which helps to improve the detection accuracy of the geometric state of the track. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1 is the axonometric view of the utility model cooperating with the steel rail;

[0024] Figure 2 is the front view of the utility model cooperating with the steel rail;

[0025] Figure 3 is Figure 2 is the sectional view along the section symbol A-A;

[0026] Figure 4 is Figure 3 is the local enlarged view of the A area in the middle;

[0027] Figure 5 is the axonometric view of the utility model;

[0028] Figure 6 is the front view of the utility model;

[0029] Figure 7 is Figure 6 is the sectional view along the section symbol B-B.

[0030] In the figure: 10, connecting seat part; 110, connecting base; 120, first bolt; 130, connecting hole; 20, transmission part; 210, belt protective cover; 220, first toothed belt wheel; 230, second toothed belt wheel; 240, transmission belt; 30, data induction part; 310, odometer protective cover; 320, mileage encoder; 330, lead wire; 40, connecting part; 410, first connecting piece; 420, second connecting piece; 430, second bolt; 50, detection part; 510, top wheel shaft; 520, third bolt; 530, top wheel; 540, locking nut; 550, locking screw; 560, steel bearing; 570, gasket; 60, rolling wheel; 70, connecting shaft part; 710, connecting shaft; 720, fourth bolt; 80, angular contact bearing; 90, wheel ring part; 910, first wheel ring; 920, second wheel ring; 930, fifth bolt. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters in the following drawings represent similar items, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0034] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0036] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Embodiment:

[0038] A high-speed rail track geometry detector trolley hub mechanism, comprising a detection trolley, a steel rail and a connecting seat component 10, the connecting seat component 10 comprises a connecting base 110 and a first bolt 120, the connecting base 110 is a U-shaped clamping seat, a plurality of connecting holes 130 are formed in the top surface of the connecting base 110, the detection trolley is installed on the top surface of the connecting base 110 through the connecting holes 130, further comprising a connecting component 40, a rolling wheel 60 and a connecting shaft component 70;

[0039] The connecting component 40 comprises a first connecting piece 410, a second connecting piece 420 and a plurality of second bolts 430, the first connecting piece 410 and the second connecting piece 420 are respectively screwed on the bottom end of the connecting base 110 through the first bolt 120, and are fastened through the second bolt 430;

[0040] The connecting shaft component 70 comprises a connecting shaft 710 and a fourth bolt 720, the fourth bolt 720 is provided with two and is respectively screwed in the first connecting piece 410 and the second connecting piece 420, the connecting shaft 710 is fixed in the connecting base 110 through two fourth bolts 720, the connecting shaft 710 is further provided with an angular contact bearing 80 and a wheel ring component 90, the angular contact bearing 80 is provided with two and is respectively rotatably connected to the outer wall of the connecting shaft 710, the wheel ring component 90 is detachably connected to the outer wall of the two angular contact bearings 80, and the rolling wheel 60 is sleeved on the outer wall of the rolling wheel 60;

[0041] The connecting component 40 and the wheel ring component 90 are further respectively connected with a detection component 50 and a transmission component 20, the other end of the transmission component 20 is connected with a data sensing component 30, wherein the data sensing component 30 and the detection component 50 are electrically connected.

[0042] It is illustrated that the connecting base 110 is a U-shaped clamping seat, and a plurality of connecting holes 130 are formed in the top surface of the connecting base 110 and used for fixing the detection trolley on the base. The U-shaped structure design can allow the trolley to cooperate with the rail during movement, and the installation of the detection trolley through the connecting holes 130 ensures that the trolley does not displace during high-speed operation. The first connecting piece 410 and the second connecting piece 420 are screwed with the bottom end of the connecting base 110 through the first bolt 120, thereby forming double support for the connecting base 110. Meanwhile, the two connecting pieces are fastened through a plurality of second bolts 430, thereby further enhancing the firmness and ensuring the stability of the overall structure. The connecting shaft 710 is a key part for transmitting rotating force and bearing load. The two ends of the connecting shaft 710 are fastened with the first connecting piece 410 and the second connecting piece 420 through the fourth bolt 720, so that the connecting shaft 710 can be kept stable in the axial direction. The fourth bolt 720 can ensure the fixation of the connecting shaft 710 in the connecting piece and provide sufficient support force to prevent the shaft center from deviating or loosening due to high-speed operation.

[0043] Specifically, two angular contact bearings 80 are arranged on the outer wall of the connecting shaft 710, which bear axial and radial loads. Such bearing design helps to maintain stability under high load, prevent axial movement, reduce friction, and ensure stable operation of the shaft. The wheel ring component 90 is connected to the outer wall of the angular contact bearing 80, which can support the rotation of the rolling wheel 60 and provide a smooth motion trajectory. The rolling wheel 60 is sleeved on the outer wall of the wheel ring component 90. The detection component 50 is used for measuring and recording the track geometry to ensure high-precision data acquisition. The data sensing component 30 is responsible for sensing and recording the mileage and speed of the trolley and transmitting data to the control module through electrical connection.

[0044] In combination with the drawings Figure 1 Figure 7 As shown, the wheel ring component 90 includes a first wheel ring 910, a second wheel ring 920, and four fifth bolts 930. The first wheel ring 910 and the second wheel ring 920 are respectively sleeved on the outer wall of the angular contact bearing 80 slot. The fifth bolts 930 are used for fixedly connecting the first wheel ring 910 and the second wheel ring 920. The second wheel ring 920 has a step outside. One end of the transmission component 20 is mounted on the step. The first wheel ring 910 and the second wheel ring 920 are both made of aluminum alloy material.

[0045] ​It is illustrated that the first ring 910 and the second ring 920 are respectively sleeved on the outer wall of the groove of the angular contact bearing 80, which ensures the stability and accuracy of the trolley in high-speed running. By tightly fitting the ring with the outer wall of the bearing, vibration and noise can be reduced, and the stability of operation can be improved. The first ring 910 and the second ring 920 are made of aluminum alloy, which has excellent light weight, high strength and corrosion resistance. Under the premise of ensuring strength, the weight of the entire structure can be reduced, and the overall operation efficiency of the trolley can be optimized. The good processability of aluminum alloy also enables these components to be precisely manufactured and can withstand high loads and dynamic impacts. The four fifth bolts 930 are used to fixedly connect the first ring 910 and the second ring 920. Through the fastening of multiple bolts, the connection between the two rings can be more stable and not easily affected by external vibrations or forces. This design helps to improve the durability of the assembly and ensures the stability of the detection trolley during operation.

[0046] Specifically, the stepped design on the outside of the second ring 920 provides precise positioning and support for the installation of the transmission component 20, ensuring the stability and reliability of the transmission component 20 during operation. In addition, the stepped design helps to disperse the stress and vibration generated by the transmission component 20, prolonging the service life of the hub mechanism. Overall, these design details work together to improve the performance of the hub mechanism, ensuring the stability and accuracy of the high-speed operation of the high-speed rail track geometry detector trolley.

[0047] In combination with the drawings Figure 1 - Figure 7 As shown, the transmission component 20 includes a belt guard 210, a first toothed pulley 220, a second toothed pulley 230, and a transmission belt 240. The second toothed pulley 230 is installed on the step, the first toothed pulley 220 is connected with the data sensing component 30, the transmission belt 240 is connected with the first toothed pulley 220 and the second toothed pulley 230 at both ends respectively, the belt guard 210 surrounds the first toothed pulley 220, the second toothed pulley 230 and the transmission belt 240, and is fixedly connected with the second connecting piece 420. The number of teeth of the first toothed pulley 220 and the second toothed pulley 230 is 25 and 50 respectively.

[0048] To make an explanation, the first toothed pulley 220 is connected with the data sensing part 30, the second toothed pulley 230 is installed on the step of the second ring 920, and the power is transmitted to the transmission belt 240, the tooth number of the first toothed pulley 220 and the second toothed pulley 230 is 25 and 50 respectively. The gear ratio of this design is 2:1, which can effectively adjust the speed ratio of power transmission to achieve the expected motion speed and torque. The transmission belt 240 connects the first toothed pulley 220 and the second toothed pulley 230, which has the advantages of low cost, low noise and high efficiency. The belt guard 210 is used to surround the first toothed pulley 220, the second toothed pulley 230 and the transmission belt 240, which mainly prevents foreign matters from entering the system and protects the transmission system from external damage.

[0049] In combination with the drawings Figure 1 - Figure 7 As shown, the data sensing part 30 includes a mileage protector 310 and a mileage encoder 320, the mileage encoder 320 is connected with the first toothed pulley 220, the mileage protector 310 surrounds the mileage encoder 320 and is screwed with the belt guard 210, and the mileage encoder 320 is also provided with a lead wire 330, which is electrically connected with the control module on the detection trolley through the outer wall of the mileage protector 310.

[0050] To make an explanation, the mileage encoder 320 can accurately record the number of rotations of the hub by connecting the first toothed pulley 220, and then convert it into the driving mileage, which provides key data for the accurate positioning of the detection trolley. The design of the mileage protector 310 not only protects the mileage encoder 320 from the interference and damage of the external environment, but also tightly combines with the belt guard 210 through screwing, which enhances the stability and protection effect of the whole. The setting of the lead wire 330 enables the mileage encoder 320 to realize the electrical signal transmission with the control module, ensuring the real-time and accuracy of the data, which provides an important basis for the data processing and decision support of the detection trolley.

[0051] In combination with the drawings Figure 1 - Figure 7As shown, the detection component 50 includes a top wheel shaft 510, a plurality of third bolts 520, a top wheel 530, steel bearings 560, and washers 570. The top wheel shaft 510 is screwed to the bottom surface of the first connecting piece 410 through a plurality of third bolts 520. Two steel bearings 560 and two washers 570 are provided. The steel bearings 560 are installed in the same row on the circular groove surface of the lower part of the top wheel shaft 510. The top wheel 530 is rotatably connected to the outside of the steel bearings 560 and is in contact with the steel rail. The bottom of the top wheel shaft 510 is also provided with a locking nut 540, which is located below the steel bearings 560. The washer 570 is arranged between the steel bearings 560 and the locking nut 540. The locking nut 540 is internally provided with four locking holes arranged in a circular array. Each locking hole is internally screwed with a locking screw 550, and the locking screw 550 is in contact with the outer wall of the top wheel shaft 510.

[0052] To make an explanation, the top wheel shaft 510 is screwed to the bottom surface of the first connecting piece 410 through a plurality of third bolts 520, thereby ensuring that it maintains a stable relative position during work and does not displace or loosen. The number and fixing method of the bolts determine the strength and stability of the top wheel shaft 510 in the system, preventing the connection from loosening due to vibration or external force. The steel bearings 560 serve as a support to ensure that the top wheel shaft 510 can rotate smoothly. They are installed in the same row on the circular groove surface of the lower part of the top wheel shaft 510, i.e., the steel bearings 560 are distributed according to certain arrangement rules at the lower part of the shaft, ensuring that they can bear uniform load. This design helps to reduce wear or damage caused by uneven load bearing. The washers 570 are buffer pieces between the steel bearings 560 and the locking nut 540, mainly used to share pressure, reduce wear, and prevent metal fatigue caused by friction. The washers 570 can also provide a certain sealing effect to prevent dust or moisture from entering the inside of the bearings, thereby affecting the normal operation of the bearings.

[0053] Specifically, the top wheel 530 is in contact with the steel rail and rotates, bearing the functions of support and sliding. The rotation of the top wheel 530 is completed through contact with the external steel rail, helping the system to complete the required operation task. The rotation and wear resistance of the top wheel 530 are required to be very high, which needs to cooperate with the steel bearing 560 to reduce friction and improve the working efficiency of the system. The locking nut 540 is located at the bottom of the top wheel shaft 510, below the steel bearing 560. Its main function is to fix the top wheel shaft 510, prevent the connection between the top wheel shaft 510 and the connecting piece from loosening due to vibration or external force during movement. The locking nut 540 is internally provided with four locking holes, which are arranged in a circular array. The locking screw 550 is screwed in the hole. The function of the locking screw 550 is to further enhance the fixing effect of the locking nut 540. This design can evenly distribute pressure to each location of the nut during locking, preventing loosening or damage due to excessive force on a certain part. Each locking screw 550 is in contact with the outer wall of the top wheel shaft 510. This contact not only increases the stability of the locking, but also can maintain the fixed state of the nut through friction, further enhancing the overall stability of the system.

[0054] It is worth noting that the rolling wheel 60 and the top wheel 530 are both made of ceramic material.

[0055] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-speed rail track geometry detector trolley hub mechanism, comprising a detection trolley, a steel rail and a connecting seat component (10), the connecting seat component (10) comprising a connecting base (110) and a first bolt (120), the connecting base (110) being a U-shaped clamping seat, a plurality of connecting holes (130) being formed in the top surface of the connecting base (110), and the detection trolley being installed on the top surface of the connecting base (110) through the connecting holes (130), characterized in that: Also include connecting components (40), rolling wheels (60) and connecting shaft components (70); The connecting components (40) include a first connecting piece (410), a second connecting piece (420) and a plurality of second bolts (430), the first connecting piece (410) and the second connecting piece (420) are respectively screwed on the bottom end of the connecting base (110) by the first bolt (120), and are fastened by the second bolt (430); The connecting shaft component (70) includes a connecting shaft (710) and a fourth bolt (720), the fourth bolt (720) is provided with 2 and is respectively screwed in the first connecting piece (410) and the second connecting piece (420) inside, the connecting shaft (710) is fixed in the connecting base (110) inside through two fourth bolts (720), the connecting shaft (710) is also provided with angular contact bearings (80) and wheel ring components (90), the angular contact bearings (80) are provided with 2 and are respectively connected in rotation on the outer wall of the connecting shaft (710), the wheel ring component (90) is detachably connected on the outer wall of two angular contact bearings (80), the rolling wheel (60) is sleeved on the outer wall of the rolling wheel (60); The connecting components (40) and the wheel ring components (90) are also respectively connected with detection components (50) and transmission components (20), the other end of the transmission component (20) is connected with a data sensing component (30), wherein the data sensing component (30) and the detection component (50) are electrically connected.

2. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 1, characterized in that, The wheel ring component (90) includes a first wheel ring (910), a second wheel ring (920) and a fifth bolt (930), the first wheel ring (910) and the second wheel ring (920) are respectively sleeved on the outer wall of the angular contact bearing (80) groove, the fifth bolt (930) is provided with 4 and is used for fixedly connecting the first wheel ring (910) and the second wheel ring (920).

3. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 2, characterized in that, The second wheel ring (920) is externally provided with a step, one end of the transmission component (20) is mounted on the step, the first wheel ring (910) and the second wheel ring (920) are both made of aluminum alloy material.

4. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 3, characterized in that, The transmission component (20) includes a belt protection cover (210), a first toothed belt wheel (220), a second toothed belt wheel (230) and a transmission belt (240), the second toothed belt wheel (230) is mounted on the step, the first toothed belt wheel (220) is connected with the data sensing component, the transmission belt (240) is connected with the first toothed belt wheel (220) and the second toothed belt wheel (230) at two ends respectively, the belt protection cover (210) surrounds the first toothed belt wheel (220), the second toothed belt wheel (230) and the transmission belt (240), and is fixedly connected with the second connecting piece (420).

5. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 4, characterized in that, The number of teeth of the first toothed belt wheel (220) and the second toothed belt wheel (230) is 25 and 50 respectively.

6. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 5, characterized in that, The data sensing component (30) comprises a mileage protector (310) and a mileage encoder (320), the mileage encoder (320) is connected with the first toothed belt wheel (220), the mileage protector (310) surrounds the mileage encoder (320) and is screwed with the belt protector (210), the mileage encoder (320) is further provided with a lead wire (330), the lead wire (330) penetrates the outer wall of the mileage protector (310) and is electrically connected with a control module on the detection trolley.

7. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 6, characterized in that, The detection component (50) comprises a top wheel shaft (510), a plurality of third bolts (520), a top wheel (530), a steel bearing (560) and a gasket (570), the top wheel shaft (510) is screwed on the bottom surface of the first connecting piece (410) through a plurality of third bolts (520), the steel bearing (560) and the gasket (570) are both provided with two, the steel bearings (560) are installed on the circular groove surface of the lower part of the top wheel shaft (510) in the same row, the top wheel (530) is rotatably connected outside the steel bearing (560) and is in contact with the steel rail, the bottom of the top wheel shaft (510) is further provided with a locking nut (540), the locking nut (540) is located below the steel bearing (560), and the gasket (570) is arranged between the steel bearing (560) and the locking nut (540).

8. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 7, characterized in that, The locking nut (540) is further provided with four locking holes in a circumferential array inside, each locking hole is screwed with a locking screw (550) inside, and the locking screw (550) is in contact with the outer wall of the top wheel shaft (510).

9. The wheel hub mechanism of the high-speed rail track geometry detector trolley according to claim 8, characterized in that, The rolling wheel (60) and the top wheel (530) are both made of ceramic material.

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