On-line detection device for toothed rail wheel

Abstract

The invention discloses an online detection device for a rack rail wheel, relates to the technical field of rail transit vehicles, and aims to solve the problem that the meshing relation between the rack rail wheel and a rack cannot be actually detected. The gear tooth structures of the detection rack and the line rack are consistent in specification; the propelling device is arranged on one side of the detection rack and used for driving the detection rack to move in the direction perpendicular to the extending direction of the detection rack; the pressing device is arranged on the other side of the detection rack, and the pressing device is used for providing pre-tightening force enabling the detection rack to reset in the direction perpendicular to the extending direction of the detection rack; through the arrangement, the actual meshing center distance between the rack rail wheel and the rack can be directly detected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit vehicles, and more particularly to a rack wheel on-line detection device. BACKGROUND

[0002] The rack wheel is a special rail transit vehicle. It is meshed with the rack laid in the middle of the railway track through the rack wheel arranged on the bogie, and the tangential force generated by the meshing is used to provide traction and braking force to drive the rack wheel to run on the track.

[0003] In the prior art, rack installation and maintenance inspection, rack wheel detection, and rack wheel and rack meshing relationship analysis mainly rely on theoretical calculation and static detection, and there is a lack of dynamic detection means for the actual running meshing matching. This may lead to the fact that the relative position change of the rack wheel and the rack caused by the change of the wheel-rail relationship (such as installation error, wear, roadbed settlement, etc.) cannot be detected in time and accurately in actual operation, affecting the smoothness and safety of the rack wheel operation.

[0004] Therefore, how to solve the problem that the meshing relationship of the rack wheel and the rack cannot be actually detected is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a rack wheel on-line detection device which can directly detect the actual meshing center distance of the rack wheel and the rack.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A rack wheel on-line detection device, comprising:

[0008] A detection rack is used to form a continuous rack with a line rack, and the tooth structure of the detection rack is consistent with that of the line rack;

[0009] A pushing device is arranged on one side of the detection rack and is used to drive the detection rack to move along the direction perpendicular to the extension direction of the detection rack;

[0010] A pressing device is arranged on the other side of the detection rack, and the pressing device is used to provide a pre-tightening force for returning the detection rack along the direction perpendicular to the extension direction of the detection rack.

[0011] Preferably, the detection rack comprises a support rack and a standard rack, the middle part of the support rack is provided with a mounting groove, the standard rack is movably arranged in the mounting groove, an elastic member is arranged between the standard rack and the support rack, and the elastic member is used to provide a pre-tightening force for the standard rack to keep it in the initial position.

[0012] Preferably, the tooth structure of the standard rack and the support rack at least partially coincides.

[0013] Preferably, the two ends of the standard rack are provided with sliding teeth that slide along the mounting groove.

[0014] Preferably, the standard rack is connected with the support rack through a detachable buckle structure, and the buckle structure is detachably arranged in the mounting groove.

[0015] Preferably, the middle part of the support rack is provided with a notch in communication with the mounting groove, the notch is provided with a sliding rod arranged along the extension direction of the support rack, and the middle part of the bottom end of the standard rack is provided with a saddle-shaped seat arranged along the sliding rod.

[0016] Preferably, the elastic member is sleeved on the sliding rod, and the elastic member is provided with two elastic members and is arranged on both sides of the saddle-shaped seat.

[0017] Preferably, the line rack is arranged between two bearing rails, the bearing rails are fixed to the track sleeper, and the support rack is arranged on the track sleeper through the positioning seat.

[0018] Preferably, the positioning seat comprises a support plate, the support plate is provided with a stop structure and a mounting table at intervals, the stop structure is used for limiting the support rack, and the mounting table is used for mounting the pressing device.

[0019] Preferably, the mounting table is provided with a first boss, the stop structure is provided with a second boss, the first boss and the second boss are arranged opposite to each other, the pressing device is a spring, and the two ends of the spring are sleeved on the corresponding first boss and second boss.

[0020] The rack wheel online detection device provided by the application comprises a detection rack, a pushing device and a pressing device, specifically, the detection rack is used for forming a continuous rack with the line rack, so that the detection rack becomes a part of the rack line and supports the normal passage of the vehicle, the detection rack and the line rack have the same tooth structure specification, can form the same meshing state as in actual operation with the rack wheel, and the meshing condition between the rack wheel and the detection rack in the detection process completely simulates the real working condition of the rack wheel in actual operation. Therefore, the detection data obtained, such as the meshing center distance, the tooth surface contact area and the tooth shape error, can truly reflect the meshing performance of the rack wheel and the rack in actual operation, and provide a reliable basis for accurately evaluating the meshing state of the rack wheel and the rack.

[0021] The propulsion device is arranged on one side of the detection rack and is used to drive the detection rack to move along the direction perpendicular to the extending direction of the detection rack. The propulsion device can accurately control the moving position of the detection rack, so that the detection rack can accurately mesh with each tooth of the rack wheel, and the detection rack can check each tooth of the rack wheel one by one, so that the overall detection of the entire gear ring is realized. The pressing device is arranged on the other side of the detection rack, and the pressing device is used to provide a pre-tightening force for returning the detection rack along the direction perpendicular to the extending direction of the detection rack. The pre-tightening force of the pressing device can quickly return the detection rack to the initial position after each detection, so as to shorten the waiting time and adjustment time in the detection process and improve the detection efficiency. For the detection of the entire gear ring of the rack wheel, the vehicle does not need to be moved, and only the detection rack needs to be moved by the propulsion device, so that the rack wheel is completely separated from the detection rack, the teeth of the rack wheel are rotated, the measured tooth is aligned with the detection rack, then the propulsion device is unloaded, and the detection rack is returned under the action of the pressing device, so that the measured tooth is re-meshed with the detection rack, and the detection of the remaining teeth of the entire gear ring is realized.

[0022] The rack wheel online detection device arranged in the above manner can directly detect the actual meshing center distance of the rack wheel and the rack. In the case that the vehicle is not moved, the entire gear ring of the rack wheel can be detected, and the detection device has a line function and can support the normal passing of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the provided drawings.

[0024] Figure 1 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure.

[0025] Figure 2 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure. Figure 1 The schematic diagram of the detection process is shown in the figure.

[0026] Figure 3 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure. Figure 1 The schematic diagram of the detection process is shown in the figure.

[0027] Figure 4 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure.

[0028] Figure 5 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure.

[0029] Figure 6 The structural schematic diagram of the rack wheel online detection device provided by the present application is shown in the figure.

[0030] Figure 7 Structure diagram of the buckle structure provided by the present application;

[0031] Figure 8 Side view of the standard rack provided by the present application;

[0032] Figure 9 Side view of the positioning seat provided by the present application;

[0033] Figure 10 Top view of the support rack provided by the present application.

[0034] Reference signs:

[0035] 10 - line rack; 20 - bearing steel rail; 30 - track sleeper; 40 - rack wheel; 50 - wheel;

[0036] 1 - detection rack, 11 - support rack, 111 - second boss, 12 - standard rack, 121 - sliding rack, 122 - saddle;

[0037] 2 - propulsion device;

[0038] 3 - compression device;

[0039] 4 - elastic member;

[0040] 5 - buckle structure;

[0041] 6 - sliding rod;

[0042] 7 - positioning seat, 71 - support plate, 72 - stop structure, 73 - mounting table, 731 - first boss. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0045] It should be noted that the following "up, down" and other orientation words are based on the definition of the drawings.

[0046] The meshing state of the rack wheel 40 and the rack is a necessary condition to ensure the stable and safe operation of the rack car, therefore, the core of the present application is to provide an online detection device for the rack wheel, which can directly detect the actual meshing center distance of the rack wheel 40 and the rack.

[0047] Please refer to Figure 1 , Figure 2 and Figure 3 , an online detection device for the rack wheel includes a detection rack 1, a pushing device 2 and a pressing device 3.

[0048] Specifically, the detection rack 1 is used to form a continuous rack with the line rack 10, so that the detection rack 1 becomes part of the rack line, supporting the normal passage of the vehicle, the detection rack 1 has the same tooth structure specification as the line rack 10, and can form the same meshing state as in actual operation with the rack wheel 40, and the meshing state between the rack wheel 40 and the detection rack 1 during detection completely simulates the real working condition of the rack car in actual operation. Therefore, the detection data obtained, such as the meshing center distance, the tooth surface contact area and the tooth shape error, can truly reflect the meshing performance of the rack wheel 40 and the rack in actual operation, and provide a reliable basis for accurately evaluating the meshing state of the rack wheel 40 and the rack.

[0049] The pushing device 2 is arranged on one side of the detection rack 1 and is used to drive the detection rack 1 to move along the direction perpendicular to the extension direction of the detection rack 1, the pushing device 2 can accurately control the moving position of the detection rack 1, so that it can accurately mesh with each tooth of the rack wheel 40, ensuring that the detection rack 1 can check each tooth of the rack wheel 40 one by one, thereby realizing comprehensive detection of the entire tooth ring. The pressing device 3 is arranged on the other side of the detection rack 1, and the pressing device 3 is used to provide a pre-tightening force to reset the detection rack 1 along the direction perpendicular to the extension direction of the detection rack 1, the pre-tightening force of the pressing device 3 can quickly reset the detection rack 1 to the initial position after each detection, so as to shorten the waiting time and adjustment time during detection and improve the detection efficiency. For the detection of the entire circle of teeth of the rack wheel 40, the vehicle does not need to be moved, only the detection rack 1 needs to be moved by the pushing device 2, so that the rack wheel 40 is completely separated from the detection rack 1, the teeth of the rack wheel 40 are then rotated to align the measured teeth with the detection rack 1, then the pushing device 2 is unloaded, and under the action of the pressing device 3, the detection rack 1 is reset, so that the measured teeth are re-meshed with the detection rack 1, thereby realizing the detection of the remaining teeth of the entire tooth ring.

[0050] The propulsion device 2 can quickly realize the meshing and disengaging of the rack wheel 40 and the rack, reducing the waiting time and adjustment time in the detection process. Especially when detecting the whole circle of the rack wheel, the quick switching capability can significantly shorten the detection period, improve the detection efficiency, and make the detection work more efficient.

[0051] The rack wheel online detection device set in the above manner can directly detect the actual meshing center distance of the rack wheel 40 and the rack, and can detect the whole circle of the rack wheel 40 without moving the vehicle. Moreover, the detection device has a line function and can support normal vehicle traffic.

[0052] In the above embodiment, the detection rack 1 includes a support rack 11 and a standard rack 12. The middle part of the support rack 11 is provided with a mounting groove, and the standard rack 12 is movably arranged in the mounting groove. An elastic member 4 is arranged between the standard rack 12 and the support rack 11, and the elastic member 4 is used to provide a pre-tightening force for the standard rack 12 to keep it in an initial position. The standard rack 12 has the same parameters as the line rack 10 and is used for meshing detection. The support rack 11 cooperates with the standard rack 12 to form a complete rack rail. The rack tooth structure parameters of the standard rack 12, the support rack 11, and the line rack 10 are consistent, and the tooth top surfaces are flush.

[0053] It should be noted that the rack tooth structure parameters of the standard rack 12, the support rack 11, and the line rack 10 are consistent, and the tooth top surfaces are flush, which ensures that the meshing state between the detection rack 1 and the rack wheel 40 is completely consistent with the meshing state in actual operation. Therefore, the meshing center distance, the tooth surface contact area, and the tooth shape error obtained during the detection process can truly reflect the meshing performance of the rack wheel 40 and the rack in actual operation, improving the accuracy and reliability of the detection results.

[0054] The pre-tightening force provided by the elastic member 4 ensures the stability of the standard rack 12 in the initial position, so that the position of the standard rack 12 is consistent at the beginning of each detection. This accurate initial position is a prerequisite for accurate measurement, which helps to reduce measurement errors caused by inconsistent initial positions and ensures the consistency and repeatability of the detection data. The standard rack 12 can slide longitudinally in the mounting groove of the support rack 11, providing flexibility during the detection process. By applying a coloring agent to the tooth surface of the standard rack 12, the rack wheel 40 is rotated to drive the standard rack 12 to slide longitudinally in the mounting groove of the support rack 11. Under the action of the elastic member 4, the tooth surface of the rack wheel 40 reciprocally contacts the standard rack 12. According to the ratio of the area of the mark left on the tooth surface of the rack wheel 40 to the total area of the tooth surface, the wear condition of the tooth surface and the tooth shape and direction error can be determined.

[0055] In addition, the stable connection between the standard rack 12 and the support rack 11 and the buffering effect of the elastic member 4 reduce the mechanical interference or vibration that may occur during the detection process, ensuring the smooth progress of the detection process, thereby helping to improve the accuracy and reliability of the detection data and ensuring that the detection results can truly reflect the actual engagement state of the rack wheel 40 and the rack. The movability of the standard rack 12 and the pre-tightening force of the elastic member 4 provide an automated and stable detection process.

[0056] In the above case, the tooth structure of the standard rack 12 and the support rack 11 at least partially overlaps.

[0057] It can be understood that the partial overlap of the tooth structure of the standard rack 12 and the support rack 11 significantly improves the bonding strength between the two. The overlapping part can effectively disperse and transmit the acting force, reduce the structural deformation or damage caused by the single rack bearing excessive load, and enhance the structural stability of the entire detection rack 1, so that it can bear greater engagement force and impact force, prolonging the service life of the equipment.

[0058] Please refer to Figure 4 , Figure 5 and Figure 6 , the two ends of the standard rack 12 are provided with sliding teeth 121 sliding along the mounting groove. The standard rack 12 is installed in the middle of the support rack 11, and the two ends of the standard rack 12 are flattened to form sliding teeth 121, which are inserted into the mounting groove of the support rack 11, similar to the mortise and tenon structure. This design not only improves the bonding strength between the standard rack 12 and the support rack 11, but also ensures the stability of the standard rack 12 during movement, thereby helping to reduce detection errors caused by loose structure and ensuring the smooth progress of the detection process.

[0059] It should be noted that the design of the sliding teeth 121 allows the standard rack 12 to smoothly slide in the mounting groove, reducing the frictional resistance during sliding and ensuring the smoothness and accuracy of the standard rack 12 during movement, improving the efficiency and reliability of the detection process. Through the cooperation of the sliding teeth 121 and the mounting groove, the standard rack 12 can achieve precise position adjustment, so that the standard rack 12 can accurately engage with each tooth of the rack wheel 40, ensuring that each measurement point during the detection process can achieve the best detection effect, improving the accuracy and consistency of the detection data. The cooperation of the sliding teeth 121 and the mounting groove provides stable support to ensure that the standard rack 12 does not shift or wobble during movement.

[0060] Please refer to Figure 7 , the standard rack 12 is connected to the support rack 11 through a detachable buckle structure 5, and the buckle structure 5 is detachably provided in the mounting groove. The buckle structure 5 is used to limit the longitudinal movement of the standard rack 12, so that it is fixed in the mounting groove.

[0061] It can be understood that the detachable buckle structure 5 enables the standard rack 12 to be quickly connected or separated from the supporting rack 11, thereby improving the flexibility of the detection device, enabling quick operation when the standard rack 12 needs to be replaced or adjusted, reducing detection preparation time and maintenance time, and improving detection efficiency. The buckle structure 5 limits the longitudinal movement of the standard rack 12, ensures that the position of the standard rack 12 remains stable during detection, avoids measurement errors caused by the position offset of the standard rack 12, and improves the accuracy and reliability of the detection data. The fixing effect of the buckle structure 5 reduces the mechanical interference or vibration that may occur during detection, ensures smooth detection process, improves the accuracy and reliability of the detection data, and ensures that the detection result can truly reflect the actual meshing state of the rack wheel 40 and the rack.

[0062] During non-working period, the buckle structure 5 is pressed between the standard rack 12 and the supporting rack 11 to limit the longitudinal movement of the standard rack 12 in the supporting rack 11, so that the standard rack 12 forms a complete rack strip with the line rack 10, and the rack car can normally run on it. During working period, the buckle structure 5 needs to be removed, the rack wheel 40 is rotated to make the standard rack 12 move longitudinally in the supporting rack 11, and under the meshing resistance and restoring force provided by the elastic member 4, the rack wheel 40 repeatedly contacts the rack with inked tooth surface, and the meshing condition or wear condition of the rack wheel 40 tooth surface can be judged by measuring the size of the ink mark left on the tooth surface. For detection of the entire circle of rack wheel 40 teeth, the vehicle does not need to be moved, only the supporting rack 11 needs to be moved by the propulsion device 2, so that the rack wheel 40 is completely separated from the standard rack 12, the measured tooth is aligned with the tooth groove of the standard rack 12 by rotating the rack wheel 40 teeth, then the propulsion device 2 is unloaded, and under the action of the compression device 3, the standard rack 12 is repositioned on the supporting rack 11, so that the measured tooth is re-engaged with the standard rack 12, thereby achieving detection of the entire circle of remaining teeth.

[0063] Please refer to Figure 8 , the middle part of the supporting rack 11 is provided with a notch communicating with the mounting groove, the notch is provided with a sliding rod 6 extending along the extension direction of the supporting rack 11, and the middle bottom of the standard rack 12 is provided with a saddle-shaped seat 122 slidingly arranged along the sliding rod 6.

[0064] It should be noted that a saddle 122 is arranged below the standard rack 12, the saddle 122 straddles and slides along the slide rod 6 supporting the rack 11, and provides accurate sliding guide for the standard rack 12, ensuring that the standard rack 12 can smoothly slide along the predetermined path during movement, reducing deviation and shaking during sliding, and improving the stability and accuracy of the movement of the standard rack 12. The arrangement of the saddle 122 makes the contact between the standard rack 12 and the slide rod 6 more uniform, reduces the frictional resistance during sliding, improves the smoothness of sliding, improves the detection efficiency, and also reduces wear caused by friction, prolonging the service life of the standard rack 12 and the slide rod 6. Stable sliding support and accurate guide mechanism reduce measurement errors caused by position deviation or shaking of the standard rack 12, improve the accuracy and reliability of the detection data, and help improve the practicality and reliability of the detection results, ensuring that the detection results can truly reflect the actual engagement state of the rack wheel 40 and the rack.

[0065] The design of the slide rod 6 and the saddle 122 makes it easier to install and remove the standard rack 12, facilitating maintenance and replacement, reducing maintenance costs, and reducing downtime caused by equipment maintenance, improving the economy and practicality of the equipment.

[0066] In the above embodiment, the elastic member 4 is sleeved on the slide rod 6, and the elastic member 4 is provided with two and located on both sides of the saddle 122. The elastic member 4 can be a spring. However, in actual application, the specific structure of the elastic member 4 is not limited.

[0067] It can be understood that the two elastic members 4 are respectively located on both sides of the saddle 122, which can provide stable support force from two directions, ensuring that the standard rack 12 always remains balanced during sliding, reducing deviation or shaking caused by uneven force on one side, and improving the stability and accuracy of the movement of the standard rack 12. The arrangement of the two elastic members 4 can evenly disperse the acting force, reduce the load borne by a single elastic member 4, and prolong the service life of the elastic member 4. The pre-tightening force provided by the elastic member 4 can ensure the stability of the standard rack 12 in the initial position, so that the position of the standard rack 12 is consistent at the beginning of each detection, which helps to reduce measurement errors caused by inconsistent initial positions and ensures the consistency and repeatability of the detection data. The stable support of the bidirectional elastic member 4 reduces the vibration and shaking of the standard rack 12 during sliding, thereby reducing measurement errors caused by mechanical interference, helping to improve the accuracy and reliability of the detection data, and ensuring that the detection results can truly reflect the actual engagement state of the rack wheel 40 and the rack.

[0068] As a preferred embodiment, the line rack 10 is arranged between two load-bearing rails 20, which are fixed to the rail sleeper 30, and the support rack 11 is arranged on the rail sleeper 30 through the positioning seat 7. The positioning seat 7 is used to fix the support rack 11, and the load-bearing rails 20 and the rail sleeper 30 are used to support the vehicle.

[0069] It should be noted that the bearing rail 20 is fixed to the rail sleeper 30, providing a stable support base for the line rack 10, ensuring that the line rack 10 will not be displaced or deformed due to an unstable foundation during operation, thereby improving the stability of the entire rack system. The support rack 11 is fixed to the rail sleeper 30 by the positioning seat 7, further enhancing the structural strength of the entire detection device, not only ensuring the stability of the support rack 11 during the detection process, but also being able to withstand large loads and impact forces, thereby extending the service life of the equipment. The support rack 11 is fixed to the rail sleeper 30 by the positioning seat 7, which can ensure the position accuracy of the support rack 11 during the detection process, help improve the accuracy and reliability of the detection data, and avoid measurement errors caused by the position offset of the support rack 11.

[0070] Please refer to Figure 9 The positioning seat 7 includes a support plate 71 , on which a stop structure 72 and a mounting platform 73 are spaced apart. The stop structure 72 is used to limit the support rack 11 , and the mounting platform 73 is used to install the clamping device 3 .

[0071] It is understandable that the stop structure 72 can accurately limit the position of the support rack 11, ensuring that the support rack 11 will not be displaced or shaken during the detection process, which helps to improve the accuracy and reliability of the detection data and avoid measurement errors caused by the unstable position of the support rack 11. The support plate 71 provides a stable support platform for the support rack 11 and the clamping device 3, ensuring that the entire detection device remains stable during operation. The precise limiting function of the stop structure 72 ensures the consistency of the position and state of the support rack 11 during each detection, improves the reliability of repeated detection, and can provide accurate data support for the maintenance and maintenance of the rack vehicle. Because the stop structure 72 and the mounting platform 73 provide stable support and precise limiting, the support rack 11 does not need to be frequently adjusted during the detection process, which reduces the adjustment time, further improves the detection efficiency, and enables the detection work to be carried out more efficiently.

[0072] Please refer to Figure 10 A first boss 731 is provided on the mounting platform 73, and a second boss 111 is provided on the stop structure 72. The first boss 731 and the second boss 111 are arranged opposite to each other. The clamping device 3 is a spring, and the two ends of the spring are respectively sleeved on the corresponding first boss 731 and the second boss 111.

[0073] It should be noted that the relative arrangement of the first boss 731 and the second boss 111 provides a precise positioning point for the spring, ensuring that the spring can maintain a stable position during operation, which helps to reduce the deviation or shaking of the spring during operation, and improves the stability and reliability of the spring. The relative arrangement of the first boss 731 and the second boss 111 provides a reliable fixing point for the spring, reducing the risk of the spring coming loose during operation. By sleeving the two ends of the spring on the first boss 731 and the second boss 111 respectively, the tension of the spring can be evenly distributed, which helps to reduce deformation or damage caused by uneven force on the spring, prolongs the service life of the spring, and improves the stability of the entire detection device.

[0074] As a compression device 3, the spring can provide stable pre-tightening force through the fixation of the first boss 731 and the second boss 111, to ensure that the support rack 11 always maintains the correct position during detection, reducing measurement errors caused by unstable position of the support rack 11, and improving the accuracy and reliability of the detection data.

[0075] The online detection device generally needs to be installed on a rack line with a pit, which provides operation space for the detection personnel under the detection device. However, in actual application, the online detection device can also be installed on a rack line elevated on the ground.

[0076] In summary, the rack wheel online detection device provided by the present application is mainly used to detect the actual meshing center distance of the rack wheel 40 and the rack, to intuitively and accurately reflect the actual meshing state of the rack wheel 40 and the rack, thereby indirectly measuring the meshing ratio and the press-in ratio of the rack wheel 40 and the rack. The length measuring tool can be used to detect the addendum gap, the dedendum gap and the side gap of the rack wheel 40 and the rack. Through the reciprocating meshing of the rack wheel 40 and the rack, the tooth surface coloring detection is completed to detect the wear condition and the tooth shape and tooth direction error of the rack wheel 40. Without moving the vehicle, the entire circle of teeth of the rack wheel 40 can be detected, and the detection process is efficient. The device can also serve as part of the line, has the function of the line, supports normal traffic of vehicles, and has strong practicality.

[0077] The vehicle is placed on the detection device, and the engagement matching relationship is analyzed according to the measured value of the relative position of the gear rack, to ensure the safe operation of the rack railway vehicle on the actual line. Specifically, the rack wheel 40 of the rack railway vehicle is moved to the standard rack 12 directly above, the two side wheels 50 support the vehicle to straddle the two side bearing rails 20 and fix the vehicle with the stop wheel shoe, the teeth of the measured rack wheel 40 fall into the tooth groove of the standard rack 12, then the buckle structure 5 at both ends of the standard rack 12 is taken out, and the measurement of the measured rack wheel 40 can be started. The distance between the tooth top surface of the rack wheel 40 and the tooth groove bottom surface of the standard rack 12 or the distance between the tooth groove bottom surface of the rack wheel 40 and the tooth top surface of the standard rack 12 is measured, to obtain the engagement center distance between the measured rack wheel 40 and the standard rack 12, and then the actual engagement ratio and the press-in ratio of the rack wheel 40 and the rack engagement, and the top gap and the bottom gap can be obtained through calculation. The engagement tooth side gap between the rack wheel 40 and the standard rack 12 can be measured by slightly rotating the rack wheel 40 to make the tooth side surface of the rack wheel 40 fit the tooth side surface of the standard rack 12. The tooth surface of the standard rack 12 is coated with a coloring agent, the rack wheel 40 is rotated back and forth to rotate the standard rack 12, under the action of the elastic member 4, the tooth surface of the rack wheel 40 reciprocally contacts the standard rack 12, and the wear condition of the tooth surface and the tooth shape and tooth direction error can be judged according to the ratio of the area of the mark left on the tooth surface of the rack wheel 40 to the total area of the tooth surface. After the inspection of a single tooth is completed, the support rack 11 is pushed to move laterally by the pushing device 2, the compression device 3 is compressed, the support rack 11 is separated from the line rack 10, the standard rack 12 is synchronously moved, and the pushing is stopped when the standard rack 12 is completely separated from the rack wheel 40. Then, the rack wheel 40 is rotated by one tooth position, the tooth to be detected is directly opposite the tooth groove of the standard rack 12, then the pushing device 2 is unloaded, the support rack 11 is pressed on the stop structure 72 under the action of the compression device 3, and then the tooth is inspected. The above process is repeated to inspect the remaining teeth of the rack wheel 40. When the detection is completed, the buckle structure 5 is placed between the two ends of the standard rack 12 and the support rack 11, to limit the longitudinal direction of the standard rack 12, so that the standard rack 12 becomes a part of the rack line, and the rack vehicle can realize normal passage by engaging with the teeth of the standard rack 12 and the support rack 11.

[0078] By measuring the distance between the tooth top surface of rack wheel 40 and the tooth groove bottom surface of standard rack 12, or the distance between the tooth groove bottom surface of rack wheel 40 and the tooth top surface of standard rack 12, the meshing center distance of the measured rack wheel 40 and standard rack 12 can be directly obtained. This direct measurement method is more accurate than traditional theoretical calculation, and can truly reflect the meshing state of rack wheel 40 and rack in actual operation, providing accurate basic data for subsequent calculation of meshing ratio, pressure ratio, and top and bottom clearances. This method not only measures the meshing center distance, but also calculates the actual meshing ratio and pressure ratio of rack wheel 40 and rack, as well as the top and bottom clearances. Comprehensive evaluation of these parameters helps to better understand the meshing performance of rack wheel 40 and rack, thereby providing strong protection for the safe operation of rack car.

[0079] By slightly rotating rack wheel 40 to make the tooth flanks of rack wheel 40 and standard rack 12 fit together, the meshing tooth flank clearance of rack wheel 40 and standard rack 12 can be accurately measured, thereby helping to evaluate the meshing accuracy of rack wheel 40 and rack, ensuring that rack wheel 40 and rack can maintain good meshing state during operation, and reducing transmission errors or impacts caused by excessive or insufficient tooth flank clearance. The device integrates various detection items, including meshing center distance measurement, tooth flank clearance measurement, tooth surface wear condition evaluation, etc. This one-stop detection process reduces the equipment and steps required during detection, improves the overall efficiency of detection, shortens the detection period, and enables more efficient detection work.

[0080] It should be noted that in the present specification, relational terms such as first and second are used solely to distinguish one entity from another entity, without necessarily requiring or implying any such actual relationship or order between these entities.

[0081] The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between various embodiments can be referred to each other.

[0082] The above describes in detail the rack wheel online detection device provided by the present application. The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A rack wheel online detection device, characterized in that: include: A detection rack (1), the detection rack (1) being used to form a continuous rack track with the line rack (10), and the specifications of the gear teeth structures of the detection rack (1) and the line rack (10) being consistent; A propulsion device (2) is provided on one side of the detection rack (1) and is used to drive the detection rack (1) to move in a direction perpendicular to its own extension direction; A pressing device (3) is provided on the other side of the detection rack (1), and the pressing device (3) is used to provide a pre-tightening force for resetting the detection rack (1) in a direction perpendicular to its own extension direction.

2. The rack wheel online detection device according to claim 1, characterized in that: The detection rack (1) comprises a supporting rack (11) and a standard rack (12), wherein a mounting groove is provided in the middle of the supporting rack (11), and the standard rack (12) is movably arranged in the mounting groove, and an elastic member (4) is provided between the standard rack (12) and the supporting rack (11), and the elastic member (4) is used to provide a pre-tightening force for the standard rack (12) to be in an initial position.

3. The rack wheel online detection device according to claim 2, characterized in that: The gear tooth structures of the standard rack (12) and the supporting rack (11) at least partially overlap.

4. The rack wheel online detection device according to claim 3, characterized in that: Sliding teeth (121) that slide along the mounting groove are provided at both ends of the standard rack (12).

5. The rack wheel online detection device according to any one of claims 2 to 4, characterized in that: The standard rack (12) is connected to the supporting rack (11) via a detachable snap-fit ​​structure (5), and the snap-fit ​​structure (5) is detachably arranged in the mounting slot.

6. The rack wheel online detection device according to claim 5, characterized in that: A notch is provided in the middle of the supporting rack (11) and is connected to the mounting groove. A slide bar (6) is provided in the notch along the extension direction of the supporting rack (11). A saddle seat (122) is provided at the bottom end of the middle of the standard rack (12) and is slidably provided along the slide bar (6).

7. The rack wheel online detection device according to claim 6, characterized in that: The elastic member (4) is sleeved on the slide rod (6), and two elastic members (4) are provided and are respectively located on both sides of the saddle seat (122).

8. The rack wheel online detection device according to claim 2, characterized in that: The line rack (10) is arranged between two bearing rails (20), the bearing rails (20) are fixed to a rail sleeper (30), and the supporting rack (11) is arranged on the rail sleeper (30) via a positioning seat (7).

9. The rack wheel online detection device according to claim 8, characterized in that: The positioning seat (7) comprises a support plate (71), and a stop structure (72) and a mounting platform (73) are arranged on the support plate (71) at intervals. The stop structure (72) is used to limit the supporting rack (11), and the mounting platform (73) is used to install the pressing device (3).

10. The rack wheel online detection device according to claim 9, characterized in that: A first boss (731) is provided on the mounting platform (73), and a second boss (111) is provided on the stop structure (72). The first boss (731) and the second boss (111) are arranged opposite to each other. The pressing device (3) is a spring, and both ends of the spring are respectively sleeved on the corresponding first boss (731) and the second boss (111).

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