Top wheel device for freight track inspection tester

Abstract

The utility model discloses a top wheel device for a freight track inspection tester, relates to the field of railway track detection equipment, and can solve the problems that in the prior art, an existing freight track inspection tester is inconvenient to detect some tracks with collapsed edges and curled edges, so that measurement errors of geometric parameters of the tracks are caused, and bearings in the top wheel device are broken. In the application, the step structure and the ceramic top wheel are designed, so that the contact between the top wheel and the steel rail is more stable and accurate, and geometric parameter measurement errors caused by edge collapse and edge curling of the rail can be effectively avoided. In this way, in the detection process, the top wheel can better adapt to tracks of different forms, the accuracy of track geometric parameter measurement is improved, the angular contact bearing is adopted due to the fact that the bearing of the type has high bearing capacity and compression resistance, stable operation can be achieved under the high-load and high-speed working condition, and the measuring accuracy is improved. Therefore, the bearing in the top wheel device is effectively prevented from being broken due to overload or fatigue, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway track detection equipment field, concretely relates to a top wheel device for freight track inspection instrument. BACKGROUND

[0002] In the railway transportation system, the quality of the track is directly related to the safety of transportation. Especially for old tracks, as the service life increases and the transportation intensity gradually increases, the deviation and damage of the track gradually become prominent, which affects the safety, efficiency and maintenance cost of the railway system. For freight lines, the transported goods are generally heavy, and the pressure and wear of the track are more significant, especially for some long-term heavy tracks, which are prone to deformation, edge collapse, edge curling and other phenomena.

[0003] Furthermore, during the measurement process using the freight track inspection instrument, the existing top wheel device does not meet the detection of tracks with edge collapse and edge curling. The deviation of the measurement value is the difference between the measurement value and the standard value, which can easily cause measurement errors of track geometric parameters (such as track gauge, level, longitudinal slope, etc.) and bearing breakage in the top wheel device. The measurement deviation not only affects the maintenance cycle and repair decision of the track, but also increases the resource investment required for future maintenance. SUMMARY

[0004] In order to solve the problem of the existing freight track inspection instrument not being convenient for detecting some tracks with edge collapse and edge curling, causing measurement errors of track geometric parameters and bearing breakage in the top wheel device, the present application provides a top wheel device for a freight track inspection instrument to solve the above problems.

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

[0006] A top wheel device for a freight track inspection instrument, comprising a detection trolley, a steel rail and a connecting shaft component, the connecting shaft component comprising a mandrel, two connecting holes are formed in the upper end of the mandrel, and the two connecting holes are arranged in an upper and lower position, the detection trolley is fixedly connected to the mandrel through the two connecting holes, a step is formed at the bottom of the mandrel, and a bearing set and a locking component are arranged on the shaft of the step;

[0007] The bearing set and the locking component are arranged in an upper and lower position on the shaft of the step, a top wheel is sleeved on the outside of the bearing set, the top wheel is made of ceramic material and is in contact with the steel rail.

[0008] As a further improvement of the utility model, the bearing group comprises a first bearing and a second bearing, the first bearing and the second bearing are installed in an up-down position, and the first bearing and the second bearing are both angular contact bearings of type 71800CTYNSULP4, wherein the top wheel is sleeved on the outer wall surface of the first bearing and the second bearing.

[0009] As a further improvement of the utility model, the cover part comprises an upper cover and a lower cover, the upper cover and the lower cover are respectively installed inside first and second recesses opened on the upper and lower end surfaces of the top wheel.

[0010] As a further improvement of the utility model, the upper cover and the lower cover are both stainless steel covers with an outer diameter of 20mm, an inner diameter of 10mm and a thickness of 0.3mm, and are matched with a gap of 0.05mm opened inside the first and second recesses.

[0011] As a further improvement of the utility model, the locking part comprises a bidirectional locking nut and fastening screws, the fastening screws are provided in four, the bidirectional locking nut is internally provided with four threaded holes in a circumferential array, wherein the four fastening screws are correspondingly screwed with the four threaded holes, and one end of the fastening screw abuts against the outer wall of the mandrel.

[0012] As a further improvement of the utility model, the cover part is further provided with a gasket group outside, the gasket group comprises an upper gasket and a lower gasket, the upper gasket is installed between the top surface of the upper cover and the bottom surface of the step, and the lower gasket is installed between the lower cover and the top surface of the bidirectional locking nut.

[0013] As a further improvement of the utility model, the upper gasket and the lower gasket are both stainless steel gaskets with an outer diameter of 13mm, an inner diameter of 10mm and a thickness of 0.05mm.

[0014] Compared with the prior art, the technical scheme of the utility model has the following advantages and effects:

[0015] 1、In the application, by designing the step structure and the ceramic top wheel, the contact between the top wheel and the rail is more stable and accurate, which can effectively avoid the geometric parameter measurement error caused by the collapse and edge of the rail. This makes the top wheel better adapt to different forms of rail during detection, improves the accuracy of rail geometric parameter measurement, and adopts 71800CTYNSULP4 type angular contact bearing, because the bearing of this type has high bearing capacity and pressure resistance, and can stably run under high load and high speed working conditions, thereby effectively preventing the bearing in the top wheel device from breaking due to overload or fatigue, and prolonging the service life of the equipment. The design of the bidirectional locking nut and the fastening screw can ensure that the bearing set and other components are stably fixed during work, reduce the loosening or displacement problem of the equipment during movement, and enhance the structural stability of the top wheel device. BRIEF DESCRIPTION OF DRAWINGS

[0016] 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 embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is the axonometric view of the present application;

[0018] Figure 2 is the front view of the present application;

[0019] Figure 3 is Figure 2 the sectional view along the section symbol A-A;

[0020] Figure 4 is Figure 3 the local enlarged view of the A area in figure.

[0021] In the figure: 10, connecting shaft part;110, mandrel;120, connecting hole;130, step;20, bearing set;210, first bearing;220, second bearing;30, top wheel;40, locking part;410, bidirectional locking nut;420, threaded hole;430, fastening screw;50, cover part;510, upper cover;520, lower cover;60, gasket set;610, upper gasket;620, lower gasket. DETAILED DESCRIPTION

[0022] 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.

[0023] 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. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0024] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] 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 when the product of the application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on 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.

[0026] 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.

[0027] 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, or 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.

[0028] Embodiments:

[0029] The utility model provides a top wheel device for freight rail inspection instrument, including detection trolley, rail and connecting shaft part 10, connecting shaft part 10 includes mandrel 110, two connecting holes 120 are formed in the upper end inside of mandrel 110 respectively, and two connecting holes 120 are arranged in upper and lower positions, and detection trolley is fixedly connected with mandrel 110 through two connecting holes 120, and the shaft body of landing stage 130 is provided with bearing group 20 and locking part 40.

[0030] The shaft body of landing stage 130 is sleeved with bearing group 20 and locking part 40 in upper and lower positions, the outer sleeve of bearing group 20 is sleeved with top wheel 30, and the upper and lower ends of top wheel 30 are provided with cover part 50, wherein 12mm obstacle avoidance space is arranged between top cover part 50 and bottom connecting hole 120, top wheel 30 is ceramic material and contacts with rail.

[0031] It is explained that the upper end of mandrel 110 is provided with two connecting holes 120, and the positions of the two connecting holes 120 are arranged in upper and lower positions. Through the two connecting holes 120, the detection trolley is fixedly connected with the mandrel 110, ensuring that the device will not loosen during operation, the bottom of the mandrel 110 is provided with a landing stage 130, the landing stage 130 has a shaft body of different diameters, so as to install the bearing group 20 and the top wheel 30, the main function of the bearing group 20 is to support the top wheel 30 and ensure its stable rotation. In the device, the shaft body of the landing stage 130 is sleeved with the bearing group 20 and the top wheel 30 in upper and lower positions, which can bear the axial and radial forces of the top wheel 30 when contacting the rail. The outer wall of the bearing group 20 provides rotation support for the top wheel 30, the locking part 40 is fixed by being arranged in upper and lower positions, ensuring the stable position of the bearing group 20 and the top wheel 30 on the landing stage 130 and preventing the bearing and other components from loosening or shifting during operation, and the top wheel 30 is the part directly contacting the rail, which plays a role in measuring the geometric parameters of the track.

[0032] Specifically, the ceramic material has good wear resistance and low friction coefficient, which can effectively reduce the friction loss between the rail and the top wheel 30, improve the operation efficiency and service life of the inspection instrument. The setting of the cover part 50 not only protects the bearing group 20 and the locking part 40 from the interference of the external environment, but also ensures the stability of the top wheel 30 during operation. In addition, the 12mm obstacle avoidance space provides sufficient buffer for the movement of the detection trolley on the track, avoiding collision and damage caused by uneven track or obstacles.

[0033] The utility model discloses a top wheel device for freight rail inspection instrument, Figure 4As shown, the bearing set 20 includes a first bearing 210 and a second bearing 220, which are installed in an up-down position, and both of which are angular contact bearings of type 71800CTYNSULP4. The top wheel 30 is sleeved on the outer wall surface of the first bearing 210 and the second bearing 220.

[0034] It is explained that the angular contact bearing design has high precision and high rigidity, can bear larger axial and radial load, and ensures that the top wheel 30 remains stable when rotating at high speed and contacting the rail. The up-down installation position of the first bearing 210 and the second bearing 220 not only enhances the stability of the structure, but also disperses the force received by the top wheel 30, reduces the load of a single bearing, thereby prolonging the service life of the bearing. In addition, the selection of the angular contact bearing of type 71800CTYNSULP4 also takes into account its reliability and durability in harsh environments, which is crucial for track inspection instruments, because the track environment is often complex and variable, and the durability and stability of the equipment are extremely high. By using such a high-performance bearing, the top wheel 30 device of the utility model can maintain higher precision and stability when measuring track geometric parameters, thereby improving the accuracy and efficiency of track inspection.

[0035] In combination with the drawings of the specification, Figure 4 As shown, the cover part 50 includes an upper cover 510 and a lower cover 520, which are respectively installed inside the first recess and the second recess opened on the upper and lower end surfaces of the top wheel 30. The upper cover 510 and the lower cover 520 are both stainless steel covers with an outer diameter of 20mm, an inner diameter of 10mm, and a thickness of 0.3mm, and cooperate with the gap of 0.05mm opened inside the first recess and the second recess.

[0036] It is explained that this design makes the cover part 50 and the top wheel 30 assembly more closely, while leaving appropriate clearance to avoid the problem of assembly too tight or too loose due to thermal expansion and other reasons. The upper cover 510 and the lower cover 520 are made of stainless steel, which not only has good corrosion resistance, but also has high strength and hardness, which can effectively protect the upper and lower end faces of the top wheel 30, and prevent damage caused by external impact or wear during use. In addition, the size design of the outer diameter 20mm*inner diameter 10mm*0.3mm makes the cover part 50 not only closely fit the concave platform of the top wheel 30, but also not cause too much resistance to the rotation of the top wheel 30, thereby ensuring the stability and precision of the top wheel 30 during high-speed rotation. The clearance of 0.05mm further improves the assembly accuracy between the cover part 50 and the concave platform of the top wheel 30, making the entire top wheel 30 device run more smoothly and reliably. By using the cover part 50 designed in this way, the top wheel 30 device of the utility model can maintain higher stability and durability during track inspection, thereby improving the accuracy and efficiency of track inspection.

[0037] In combination with the drawings of the specification, Figure 4 As shown in the drawings, the locking part 40 includes a bidirectional locking nut 410 and four fastening screws 430, the inside of the bidirectional locking nut 410 is circumferentially arrayed with four threaded holes 420, wherein the four fastening screws 430 are correspondingly screwed with the four threaded holes 420, and one end of the fastening screw 430 abuts against the outer wall of the mandrel 110.

[0038] It is explained that the design of the bidirectional locking nut 410 makes the locking part 40 firmly fix the mandrel 110 in the main structure of the top wheel 30 device, preventing the mandrel 110 from loosening or deviating during track inspection due to excessive force, and the bidirectional locking nut 410 not only provides a double locking effect, but also facilitates quick adjustment or replacement of the mandrel 110 when needed, wherein the circumferential array distribution of the four fastening screws 430 ensures that the mandrel 110 receives uniform and stable fastening force, avoiding deformation or damage caused by uneven force. At the same time, the abutment design of the fastening screw 430 and the outer wall of the mandrel 110 further enhances the locking effect, so that the mandrel 110 can remain stable during high-speed rotation or impact. Through the design of the locking part 40, the top wheel 30 device of the utility model can maintain higher stability and durability during track inspection, thereby improving the accuracy and efficiency of track inspection.

[0039] In combination with the drawings of the specification, Figure 4As shown, the outer part of the cover part 50 is also provided with a gasket set 60, which includes an upper gasket 610 and a lower gasket 620, the upper gasket 610 is installed between the top surface of the upper cover 510 and the bottom surface of the step 130, and the lower gasket 620 is installed between the lower cover 520 and the top surface of the double locking nut 410, both the upper gasket 610 and the lower gasket 620 are stainless steel gaskets with an outer diameter of 13mm, an inner diameter of 10mm and a thickness of 0.05mm.

[0040] It is explained that the gasket set 60 not only enhances the sealing between the cover part 50 and the main body structure of the top wheel 30 device, prevents impurities such as dust and moisture from entering, and affects the normal operation of the top wheel 30 device, but also plays a buffering and damping role, protecting the cover part 50 and adjacent parts from impact and wear caused by uneven tracks or vibrations during operation. Among them, the upper gasket 610 is installed between the top surface of the upper cover 510 and the bottom surface of the step 130, effectively filling the small gap between the two, ensuring the close fit between the upper cover 510 and the step 130; the lower gasket 620 is installed between the lower cover 520 and the top surface of the double locking nut 410, also playing a sealing and buffering role. In addition, the stainless steel gasket with an outer diameter of 13mm, an inner diameter of 10mm and a thickness of 0.05mm is selected, which not only ensures the strength and durability of the gasket, but also ensures the stability of its size, so that the gasket set 60 can adapt to the needs of different working environments. Through the design of the cover part 50, the top wheel 30 device of the utility model can better resist the interference of the external environment during track inspection, maintain the integrity and stability of its internal structure, and further improve the accuracy and efficiency of track inspection.

[0041] The above is only the preferred embodiment 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 modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A top wheel arrangement for a freight rail inspection vehicle comprising a trolley, a rail and a connecting axle member (10), characterised in that: The connecting shaft component (10) comprises a mandrel (110), two connecting holes (120) are respectively arranged in the upper end of the mandrel (110), and the two connecting holes (120) are arranged in an upper and lower position; the detection trolley is fixedly connected with the mandrel (110) through the two connecting holes (120); a step (130) is arranged at the bottom of the mandrel (110); a bearing group (20) and a locking component (40) are arranged on the shaft of the step (130). The bearing group (20) and the locking component (40) are arranged in an upper and lower position on the shaft of the step (130); a top wheel (30) is arranged outside the bearing group (20); a cover component (50) is arranged on the upper and lower ends of the top wheel (30); a 12mm obstacle avoidance space is arranged between the top cover component (50) and the bottom connecting hole (120); the top wheel (30) is made of ceramic material and is in contact with the steel rail.

2. A top wheel assembly for a rail inspection vehicle as defined in claim 1, wherein: The bearing group (20) comprises a first bearing (210) and a second bearing (220), the first bearing (210) and the second bearing (220) are arranged in an upper and lower position, and the first bearing (210) and the second bearing (220) are both angular contact bearings of type 71800CTYNSULP4; the top wheel (30) is arranged on the outer wall surface of the first bearing (210) and the second bearing (220).

3. A top wheel assembly for a freight rail inspection vehicle as set forth in claim 2, wherein, The cover component (50) comprises an upper cover (510) and a lower cover (520), the upper cover (510) and the lower cover (520) are respectively arranged in a first recess and a second recess arranged on the upper and lower end surfaces of the top wheel (30).

4. A top wheel assembly for a freight rail inspection vehicle as set forth in claim 3, wherein: The upper cover (510) and the lower cover (520) are both stainless steel covers with an outer diameter of 20mm, an inner diameter of 10mm and a thickness of 0.3mm, and are matched with a 0.05mm gap arranged in the first recess and the second recess.

5. A top wheel assembly for a freight rail inspection vehicle as defined in claim 4, wherein: The locking component (40) comprises a bidirectional locking nut (410) and a fastening screw (430), the fastening screw (430) is provided with four, the bidirectional locking nut (410) is internally arranged with four threaded holes (420) in a circular array, four fastening screws (430) are correspondingly screwed with four threaded holes (420), and one end of the fastening screw (430) is in contact with the outer wall of the mandrel (110).

6. A top wheel assembly for a freight rail inspection vehicle as set forth in claim 5, wherein, The outer part of the cover component (50) is further provided with a gasket group (60), the gasket group (60) comprises an upper gasket (610) and a lower gasket (620), the upper gasket (610) is arranged between the top surface of the upper cover (510) and the bottom surface of the step (130), and the lower gasket (620) is arranged between the lower cover (520) and the top surface of the bidirectional locking nut (410).

7. A top wheel assembly for a freight rail inspection vehicle as set forth in claim 6, wherein, The upper gasket (610) and the lower gasket (620) are both stainless steel gaskets with an outer diameter of 13mm, an inner diameter of 10mm and a thickness of 0.05mm.

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