Locomotive, powered bogie and monitoring system thereof

Abstract

The present disclosure provides a locomotive, a power bogie and a monitoring system thereof, and belongs to the technical field of locomotives. The power bogie comprises a frame, an axle device, a primary suspension device, a driving device, a plurality of data acquisition devices and a plurality of tread active grinding devices. The axle device comprises an axle box body rotatably connected with an axle; the primary suspension device connects the axle box body and the frame; the driving device is connected with the frame and the axle, and is used for driving the axle device; the plurality of data acquisition devices are arranged in one-to-one correspondence with the plurality of axle box bodies; the data acquisition device is arranged on the corresponding axle box body, and is used for acquiring the running parameters of the axle box body and sending the running parameters of the axle box body; the running parameters of the axle box body comprise vertical acceleration of the axle box body; the plurality of tread active grinding devices are arranged in one-to-one correspondence with the plurality of wheels; the tread active grinding device can grind the tread of the corresponding wheel in response to a grinding control signal. The power bogie can avoid excessive grinding of the tread of the wheel.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of locomotive technology, in particular to a locomotive, a power bogie and a monitoring system thereof. BACKGROUND

[0002] Domestic railway lines are complex and diverse, and many locomotives have the problem of wheel polygon in the process of operation. Severe wheel polygon can worsen the locomotive operation environment, causing locomotive component failure problems such as frame weld crack, spring fracture, and truck ladder fracture. At present, the only way to eliminate the polygon of the locomotive is to regrind the wheel, but frequent regrinding causes rapid consumption of the wheel, wasting a lot of manpower and resources.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] The purpose of the present disclosure is to overcome the shortcomings of the prior art described above, and to provide a locomotive, a power bogie and a monitoring system thereof, which avoids excessive grinding of the wheel tread.

[0005] According to a first aspect of the present disclosure, a power bogie of a locomotive is provided, comprising

[0006] a frame;

[0007] an axle device comprising an axle shaft and two wheels fixedly connected with the axle shaft, and further comprising an axle box body rotatably connected with the axle shaft outside the wheels;

[0008] a primary suspension device connecting the axle box body and the frame, so that the axle box body is suspended on the frame;

[0009] a driving device connected with the frame and the axle shaft, for driving the axle device;

[0010] a plurality of data acquisition devices, each corresponding to one of the axle box bodies; the data acquisition device is arranged on the corresponding axle box body, for acquiring the operating parameters of the axle box body and sending the operating parameters of the axle box body; the operating parameters of the axle box body include the vertical acceleration of the axle box body;

[0011] a plurality of tread active grinding devices, each corresponding to one of the wheels; the tread active grinding device can grind the tread of the corresponding wheel in response to a grinding control signal.

[0012] According to an embodiment of the present disclosure, the operating parameters of the axle box body further include:

[0013] The temperature of the bearing in the axle box, the lateral acceleration of the axle box, and the longitudinal acceleration of the axle box.

[0014] According to an embodiment of the present disclosure, the power bogie of the locomotive further comprises a brake corresponding to each of the wheels; wherein the mounting height of at least part of the brakes is higher than the axle.

[0015] According to an embodiment of the present disclosure, the driving device comprises a driving motor and a motor boom;

[0016] The lower end of the motor boom is hinged to the driving motor;

[0017] The upper end of the motor boom is hinged to the framework;

[0018] The motor boom has an arc-shaped slot adapted to the shell of the driving motor, so that the motor boom closely fits the shell of the driving motor.

[0019] According to an embodiment of the present disclosure, the framework comprises two side beams on both sides, and a traction beam, a cross beam and an end beam connecting the two side beams;

[0020] The power bogie of the locomotive further comprises a push-pull type short traction rod; the push-pull type short traction rod comprises a traction rod, a traction rubber joint and a fall-prevention mechanism; one end of the traction rod is mounted on one end of the framework close to the traction beam, and the other end is used for mounting on the vehicle body underframe; and the traction rubber joint is arranged between the traction rod and the end beam, and the traction rubber joint is arranged between the traction rod and the vehicle body underframe.

[0021] According to a second aspect of the present disclosure, a monitoring system of a power bogie of a locomotive is provided, which is applied to the power bogie of the locomotive described above; the monitoring system comprises a data processor and a display;

[0022] The data processor comprises a grinding control unit; the grinding control unit is configured to:

[0023] Obtain the vertical acceleration of the axle box, the speed of the locomotive and the wheel diameter of the wheel;

[0024] Perform spectrum analysis on the vertical acceleration, the speed of the locomotive and the wheel diameter of the wheel, taking a first preset time period as a time section, to determine the main frequency and the main frequency energy value of the wheel, and the polygon order of the wheel;

[0025] Send the main frequency energy value and the polygon order to the display, so that the display displays the main frequency energy value and the polygon order;

[0026] When the main frequency energy value exceeds the set energy threshold, a grinding control signal is sent to the tread active grinding device of the corresponding wheel until the main frequency energy value does not exceed the set energy threshold.

[0027] According to an embodiment of the present disclosure, the grinding control signal comprises a contact force level parameter for controlling the contact force when the tread active grinding device contacts the tread of the wheel.

[0028] According to an embodiment of the present disclosure, the contact force level parameter is one of a first contact force level parameter, a second contact force level parameter, a third contact force level parameter, a fourth contact force level parameter, and a fifth contact force level parameter.

[0029] The first contact force level parameter can make the contact force be 0.8-1.2 kN.

[0030] The second contact force level parameter can make the contact force be 1.8-2.2 kN.

[0031] The third contact force level parameter can make the contact force be 2.8-3.2 kN.

[0032] The fourth contact force level parameter can make the contact force be 3.8-4.2 kN.

[0033] The fifth contact force level parameter can make the contact force be 4.8-5.2 kN.

[0034] According to an embodiment of the present disclosure, the grinding control signal comprises a contact time parameter for controlling the contact time when the tread active grinding device contacts the tread of the wheel and the time interval between adjacent two contacts.

[0035] The ratio of the contact time to the time interval is 1:2.

[0036] According to a third aspect of the present disclosure, a locomotive is provided, comprising the above-mentioned power bogie of the locomotive and the above-mentioned monitoring system of the power bogie of the locomotive.

[0037] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure. It is apparent that the drawing in the following description is only some embodiments of the present disclosure, and other drawings can be obtained by those of ordinary skill in the art without creative effort based on these drawings.

[0039] Figure 1 For an embodiment of the present disclosure, a schematic diagram of the structure of a power bogie of a locomotive.

[0040] Figure 2 For an embodiment of the present disclosure, a schematic diagram of the structure of an axle device.

[0041] Figure 3 For an embodiment of the present disclosure, a schematic diagram of the structure of a driving device.

[0042] Figure 4 For an embodiment of the present disclosure, a schematic diagram of the structure of a frame.

[0043] Figure 5 For an embodiment of the present disclosure, a schematic diagram of the structure of a power bogie of a locomotive.

[0044] Figure 6 For an embodiment of the present disclosure, a schematic diagram of the structure of a primary suspension device.

[0045] Figure 7 For an embodiment of the present disclosure, a schematic diagram of the structure of a brake.

[0046] Figure 8 For an embodiment of the present disclosure, a schematic diagram of the structure of a power bogie of a locomotive.

[0047] Figure 9 For an embodiment of the present disclosure, a schematic diagram of the structure of a stone and sand ejecting device.

[0048] Figure 10 For an embodiment of the present disclosure, a schematic diagram of the structure of a traction device.

[0049] Figure 11 For an embodiment of the present disclosure, a schematic diagram of the structure of a tread active grinding device.

[0050] Figure 12 For an embodiment of the present disclosure, a schematic diagram of the structure of a data acquisition device.

[0051] Figure 13 For an embodiment of the present disclosure, a schematic diagram of the structure of a monitoring system.

[0052] Figure 14For an embodiment of the present disclosure, a workflow diagram of a monitoring system is shown. DETAILED DESCRIPTION

[0053] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Moreover, the figures shown are only schematic and the concepts presented herein can be implemented in a variety of forms. In addition, each of the figures can not be drawn to scale and should not be regarded as limiting the presently disclosed concepts.

[0054] Although relative terms such as "on", "under", "lower", "upper" and the like can be used herein to describe one element's relationship to another element as the device is oriented in the figures, such terms are used on the understanding that the device can be oriented in other directions, and such terms are used for convenience. For example, if the device in one of the figures were turned over, elements described as "on" other elements could then be oriented "under" the other elements. Such phrases should be interpreted as "adjacent to", "near", or "in the general vicinity of".

[0055] The terms "a", "an", "the" and "at least one" are used to mean one or more elements / instructions / components / etc.; the terms "comprises", "comprising", "includes", "including" and the like are used to mean including, but not limited to; the term "first" and "second" and "third" and the like are used to denote a number of elements / instructions / components / etc. but not necessarily in that order.

[0056] An embodiment of the present disclosure provides a locomotive, referring to Figure 13 , the locomotive has a power bogie of the locomotive and a monitoring system of the power bogie of the locomotive.

[0057] Referring to Figure 1 , the power bogie comprises

[0058] a frame 300;

[0059] an axle device 100, comprising an axle 103 and two wheels 102 fixedly connected with the axle 103, and further comprising an axle box 101 rotatably connected with the axle 103 outside the wheels 102;

[0060] a primary suspension device 500, connecting the axle box 101 and the frame 300, so that the axle box 101 is suspended on the frame 300;

[0061] A driving device 200 is connected with the frame 300 and the axle 103, and is configured to drive the wheel axle device 100.

[0062] A plurality of data acquisition devices 1100 are arranged one-to-one corresponding to the axle boxes 101. The data acquisition device 1100 is arranged on the corresponding axle box 101, and is configured to acquire the running parameters of the axle box 101 and send the running parameters of the axle box 101. The running parameters of the axle box 101 include the vertical acceleration of the axle box 101.

[0063] A plurality of tread active grinding devices 1000 are arranged one-to-one corresponding to the wheels 102. The tread active grinding device 1000 can respond to the grinding control signal to grind the tread of the corresponding wheel 102.

[0064] Referring to Figure 13 The monitoring system of the locomotive power bogie includes a data processor 100M and a display 200M. The data processor 100M includes a grinding control unit. Referring to Figure 14 The grinding control unit is configured to:

[0065] Obtain the vertical acceleration of the axle box 101, the speed of the locomotive, and the wheel diameter of the wheel 102.

[0066] Perform spectrum analysis on the vertical acceleration, the speed of the locomotive, and the wheel diameter of the wheel 102 in a first preset time period as a time section, to determine the main frequency and the main frequency energy value of the wheel 102, and the polygon order of the wheel 102.

[0067] Send the main frequency energy value and the polygon order to the display 200M, so that the display 200M displays the main frequency energy value and the polygon order.

[0068] When the main frequency energy value exceeds a set energy threshold, send a grinding control signal to the tread active grinding device 1000 of the corresponding wheel 102 until the main frequency energy value does not exceed the set energy threshold.

[0069] In the locomotive and its power bogie and monitoring system provided by the present disclosure, the power bogie is provided with a data acquisition device 1100 capable of acquiring the running parameters of the axle box 101 and a tread active grinding device 1000 capable of grinding the tread of the wheel 102 to eliminate the polygon of the wheel 102. The monitoring system can acquire the vertical acceleration of the axle box 101, and determine the main frequency energy value of the wheel 102 according to the speed of the locomotive (which can be determined according to the speed signal) and the wheel diameter of the wheel 102 determined in advance, and determine whether the tread of the wheel 102 needs to be ground to weaken the polygon of the wheel 102 according to the main frequency energy value of the wheel 102. In this way, the locomotive provided by the present embodiment can continuously monitor the polygon state of the wheel 102, especially the main frequency energy value of the wheel 102 when the locomotive is running, so that the tread active grinding device 1000 is actuated when the main frequency energy value exceeds the preset energy threshold, so as to reduce the polygon of the wheel 102 and in turn reduce the main frequency energy value, so as to achieve the purpose of controlling the harm of the polygon of the wheel 102 and improve the running environment of the locomotive.

[0070] In other words, the monitoring system of the power bogie of the locomotive of the present embodiment can determine whether the tread of the wheel 102 needs to be ground to weaken the polygon of the wheel 102 according to the vertical acceleration of the axle box 101 monitored by the power bogie of the locomotive, and send a grinding control signal when grinding is needed; the power bogie of the locomotive can respond to the grinding control signal to perform tread grinding action to weaken the polygon of the wheel 102. In this way, through the cooperation of the power bogie and the monitoring system of the locomotive, on the one hand, the polygon of the wheel 102 can be weakened when it may cause harm, and in turn the harm of the polygon of the wheel 102 is controlled; on the other hand, the tread can be ground only when the polygon of the wheel 102 may cause harm, avoiding excessive grinding of the tread of the wheel 102, and in turn reducing the wear of the wheel 102, which is beneficial to improve the service life of the wheel 102. On the other hand, the locomotive provided by the present embodiment can eliminate the polygon of the wheel 102 during operation without stopping operation or disassembling the wheel 102 for special wheel repair, which improves the timeliness and convenience of eliminating the polygon of the wheel 102, saves manpower and resources, and reduces costs.

[0071] As follows, the principles and effects of the locomotive of the present embodiment are further introduced and described in combination with the drawings.

[0072] According to an embodiment of the present disclosure, the locomotive adopts a C0-C0 axle type. Specifically, each locomotive has two power bogies, each of which is provided with three wheel axle devices 100, each of which has an independent driving device 200. In this way, the power bogie of the locomotive of the embodiment of the present disclosure has three wheel axle devices 100 and three driving devices 200 corresponding to the three wheel axle devices 100, and each driving device 200 drives a corresponding wheel axle device 100. In this way, the wheels 102 can have greater adhesion, which is beneficial to improve the heavy load capacity of the locomotive. In an example, the power bogie of the locomotive provided by the embodiment of the present disclosure can be applied to a heavy shunting locomotive and a special line locomotive with a maximum speed of 100 km / h, a locomotive wheel circumference traction power of 2000-3000 kW, and a single axle traction force of ≤95 kN, and meets the requirements of European dynamic limit and domestic railway limit. In this way, the locomotive provided by the present disclosure can be a heavy load and high power locomotive, and in particular can be a heavy load and high power locomotive suitable for hydrogen fuel cells.

[0073] In an embodiment of the present disclosure, the locomotive is a locomotive with a hydrogen fuel cell, and in particular can be a hybrid locomotive with a high-power hydrogen fuel cell; specifically, the driving device 200 of the power bogie can be an electric motor that can work under the drive of a high-power hydrogen fuel cell. Of course, it can be understood that the locomotive of the present disclosure can also use other power sources or batteries, such as power supply through a railway catenary or a storage battery. This makes the locomotive not pollute the air of the use environment, and improves the air quality of the working space around the locomotive. In the prior art, most of the shunting locomotives widely used in railway locomotive depots, vehicle depots, marshalling yards, and factories, mines, ports and other places with discontinuous electrification for shunting and rescue tasks are internal combustion traction shunting locomotives. The internal combustion engine locomotive adopts internal combustion engine power, which seriously pollutes the air, especially when running in a closed space (such as a subway, a cave, a tunnel, etc.), which pollutes the air more seriously. Compared with the internal combustion traction shunting locomotive in the prior art, the power locomotive provided by the embodiment of the present disclosure is more suitable for undertaking these tasks.

[0074] In an embodiment of the present disclosure, referring to Figure 1 , in addition to including the frame 300, the wheel axle device 100, the primary suspension device 500, the driving device 200, the data acquisition device 1100 and the tread active grinding device 1000, the power bogie is also provided with a secondary suspension device 400, a brake device 600, a rim lubrication device 700, a stone and sand throwing device 800 and a traction device (not shown in Figure 1 ).

[0075] Referring to Figure 4The framework 300 is a "moon" shaped framework 300, which includes side beams 301, a traction beam 302, a cross beam 303 and end beams 304.

[0076] The side beams 301 are two in number, oppositely arranged on the lateral sides of the framework 300 and longitudinally extended. The cross beam 303, the traction beam 302 and the end beams 304 are located between the two side beams 301 and connected with the side beams 301 at both ends. The traction beam 302 is close to the opening side of the "moon", and the cross beam 303 is located between the traction beam 302 and the end beam 304. On the side beam 301, a secondary lateral damper seat, a head shaking stop seat, a brake mounting seat, an axle box pull rod mounting seat and the like are arranged.

[0077] Referring to Figure 2 , the wheelset device 100 includes an axle shaft 103 and two wheels 102 fixedly connected with the axle shaft 103, and further includes an axle box body 101 rotatably connected with the axle shaft 103 outside the wheel 102, that is, the wheelset device 100 adopts a conventional wheel pair structure. Outside each wheel 102, the axle box body 101 rotatably connected with the axle shaft 103 is arranged.

[0078] In an example, the wheel diameter of the wheel 102 is between 1100-1400mm, for example, 1250mm. In this way, the power bogie can meet the wheelset traction requirement.

[0079] In an embodiment of the present disclosure, the wheelbase of the power bogie is 2000mm+1850mm. That is, in the three wheelset devices 100 of the power bogie, the wheelbase between the middle wheelset device 100 and one of the end wheelset devices 100 is 2000mm, and the wheelbase between the middle wheelset device 100 and the other end wheelset device 100 is 1850mm, which ensures that the power bogie has good dynamics and curve passing performance. In this way, the power bogie can have a smaller wheelbase under the condition of unchanged traction capacity, so that the power bogie can pass through a small curve radius more easily, thereby being able to adapt to complex special lines and leaving more space for the installation of other equipment of the locomotive.

[0080] Referring to Figure 1 and Figure 6 , the wheelset device 100 is connected with the framework 300 through a primary suspension device 500. Specifically, the primary suspension device 500 connects the axle box body 101 and the framework 300, so that the axle box body 101 is suspended on the framework 300.

[0081] In an embodiment of the present disclosure, as shown in Figure 6 , the primary suspension device 500 mainly includes a primary suspension spring 501, a primary vertical stop 502, a primary elastic side stop 503, a primary vertical damper 504 and an axle box pull rod 505.

[0082] The axle box 101 is connected to the frame 300 via primary suspension springs 501. For example, each primary suspension device 500 has two primary suspension springs 501, with the bottom ends of the two primary suspension springs 501 respectively supporting the two ends of the axle box 101, and the top ends of the two primary suspension springs 501 respectively supporting the side beams 301 of the frame 300. Optionally, the primary suspension springs 501 can be low-stiffness primary springs, which can achieve a large primary deflection.

[0083] A series of vertical stops 502 are fixed to the side beam 301 and located on the lower side of the side beam 301. They are used to limit the vertical distance between the frame 300 and the axle box 101 and to prevent the frame 300 from sag excessively.

[0084] A series of elastic side stops 503 are provided on the outer side of the side beam 301, located between the outer side of the side beam 301 and the inner side of the axle box 101. They are used to limit the lateral spacing between the side beam 301 and the axle box 101, thereby reducing the lateral offset and vibration of the frame 300 relative to the wheel axle device 100, and realizing the lateral positioning of the axle box 101, so that the axle box 101 has suitable lateral positioning stiffness.

[0085] The top end of the primary vertical vibration damper 504 is connected to the side beam 301, specifically to the primary vertical vibration damper 504 mounting base on the side beam 301. The bottom end of the primary vertical vibration damper 504 is connected to the axle box 101, specifically to the vertical vibration damping mounting base on the outside of the axle box 101. In this way, the primary vertical vibration damper 504 can reduce the vertical vibration of the frame 300.

[0086] One end of the axle box tie rod 505 is connected to the axle box body 101, and the other end is connected to the axial tie rod mounting seat provided on the frame 300, so as to limit the displacement of the wheel axle device 100 in the longitudinal direction (locomotive length direction) and realize the longitudinal positioning of the axial direction.

[0087] In one example, the axial tie rod and drive unit 200 that cooperate with the axle assembly 100 are located on the same side of the axle 103.

[0088] Optionally, the axial tie rod is a single tie rod, which allows the axle box 101 to have suitable longitudinal positioning stiffness.

[0089] like Figure 5 As shown, the secondary suspension device 400 includes a secondary rubber stack 401, a secondary lateral shock absorber 402, and a secondary lateral stop 403, which are used to support and fix the vehicle body.

[0090] The rubber stack mounting seat is arranged on the side beam 301, and the secondary rubber stack 401 is arranged on the rubber stack mounting seat and used for bearing the vehicle body. In an example, two groups of secondary rubber stacks 401 are arranged on each side of the frame 300 and longitudinally arranged on the center line of the side beam 301. In an example, the vertical stiffness of the secondary rubber stack 401 is between 4-8 kN / mm, and the static deflection is between 10-14 mm. For example, the vertical stiffness of the secondary rubber stack 401 is 6 kN / mm, and the static deflection is 12 mm.

[0091] The secondary lateral damper 402 is arranged on the secondary lateral damper seat and used for connecting with the vehicle body and limiting the lateral vibration of the vehicle body. In an example, the secondary lateral damper 402 is arranged on one side beam 301 of the power bogie; and in the two power bogies of the vehicle, the secondary lateral dampers 402 are arranged on opposite sides, respectively. In an example, two secondary lateral dampers 402 are arranged on each power bogie.

[0092] The secondary lateral stop 403 is arranged on the outside of the side beam 301 and used for limiting the lateral displacement of the vehicle body. In an example, the secondary lateral stop 403 is arranged on the outside of each outer beam of the power bogie. In an example, one secondary lateral stop 403 is arranged on the outside of each outer beam.

[0093] In the power bogie provided by the embodiment of the present disclosure, the bogie suspension system adopts the suspension parameters of one soft and two hard, so that more space can be provided on the upper part of the vehicle body for arranging pipelines and circuits. This results in that the structure of the one suspension spring 501 and the single axle box pull rod 505 cannot provide sufficient lateral positioning stiffness of the wheel set; however, the wheel set positioning structure of the double axle box pull rod 505 is relatively complex and occupies longitudinal space, so the present disclosure adopts the design mode of the one suspension spring 501+single axle box pull rod 505+one elastic side stop 503, the small stiffness one suspension spring 501 can realize large one suspension deflection, and the single axle box pull rod 505 and the one elastic side stop 503 provide suitable longitudinal and lateral positioning stiffness of the axle box body 101.

[0094] In an embodiment of the present disclosure, referring to Figure 3The driving device 200 comprises a driving motor 201 and a motor boom 202. The lower end of the motor boom 202 is hinged to the driving motor 201. The upper end of the motor boom 202 is hinged to the frame 300. The motor boom 202 has an arc-shaped slot matched with the shell of the driving motor 201, so that the motor boom 202 closely fits the shell of the driving motor 201. In this way, the motor boom 202 adopts a boom with an arc-shaped slot matched with the shell of the driving motor 201, for example, an arc-shaped boom, which can reduce the distance between the driving motor 201 and the frame 300 (the crossbeam 303, the traction beam 302 or the end beam 304 of the frame 300), and further reduce the wheelbase between the two axles, which is conducive to realizing a small wheelbase of the bogie and providing space for installing other devices.

[0095] The side of the crossbeam 303, the traction beam 302 and the end beam 304 close to the "moon" shaped opening is provided with a boom mounting seat, and the upper end of the motor boom 202 is connected to the boom mounting seat. According to the distance from the "moon" shaped opening, the three driving devices 200 are sequentially numbered as a first driving device, a second driving device and a third driving device from near to far. The first driving device is located on the side of the traction beam 302 close to the "moon" shaped opening and is connected to the traction beam 302 through the motor boom 202. The second driving device is located on the side of the crossbeam 303 close to the "moon" shaped opening and is connected to the crossbeam 303 through the motor boom 202. The third driving device is located on the side of the end beam 304 close to the "moon" shaped opening and is connected to the end beam 304 through the motor boom 202.

[0096] In an example, a suspension rubber sleeve is mounted on the motor boom 202 to reduce the vibration and impact of the driving motor 201.

[0097] In an example, the motor boom 202 is further provided with a falling prevention pin to prevent the driving motor 201 from falling off and ensure the safety of the driving device 200.

[0098] As shown in FIG. 1, Figure 3 The driving device 200 further comprises a gear assembly 203 and a shaft holding box assembly 204. The gear assembly 203 comprises a gear box and a gear transmission system arranged in the gear box. The gear assembly 203 is arranged inside the wheel pair (two wheels 102) and is suspended on the axle 103 through the bearing of the gear box on one side and is connected to the output end of the driving motor on the other end. In this way, the gear assembly 203 can connect the driving motor 201 and the axle 103 and transmit the power of the driving motor 201 to the axle 103. The shaft holding box assembly 204 is connected to the axle 103 and is connected to the driving motor 201 and the gear box, which makes the driving motor 201 suspended on the axle 103.

[0099] In one example, the gear transmission system employs a parallel gear transmission structure.

[0100] Braking device 600 includes brakes corresponding one-to-one with each wheel 102; such as Figure 7 As shown, these brakes may include a parking brake 601 and a service brake 602. At least some of these brakes are mounted at a height higher than the axle 103. Thus, these brakes with a higher mounting height do not encroach on the space between adjacent wheels 102, allowing for a reduction in the wheelbase of the power bogie and providing space for the installation of other equipment. In one example, four brakes are top-mounted to facilitate a shorter power bogie wheelbase.

[0101] In one example, the brake is provided with a tread braking unit for braking wheel 102.

[0102] In one example, the brakes employ a single-sided tread brake unit, which is positioned in the center of the power bogie. Each power bogie is equipped with six sets of tread brake units. Two of these sets of tread brake units have parking braking functionality, while four sets are top-mounted, which facilitates a shorter wheelbase.

[0103] like Figure 8 As shown, the wheel flange lubrication device 700 is fixed on the frame 300 and is used to lubricate the wheel flange of the wheel 102. The wheel flange lubrication device 700 on the power bogie can be a dry wheel flange lubrication device 701, a wet wheel flange lubrication device 702, or a combination of both.

[0104] In some embodiments of this disclosure, the flange lubrication device 700 is detachably mounted on the frame 300. The power bogie can be configured with a suitable flange lubrication device 700 according to the requirements of the application environment, thus enabling the power bogie to function as a platform and allowing for different configurations to be selected based on varying needs.

[0105] In one embodiment of this disclosure, the wheel flange lubrication device 700 of the power bogie adopts dry wheel flange lubrication technology, while reserving space for wet wheel flange lubrication installation. It can be selected according to different needs, achieving the purpose of platform design.

[0106] like Figure 1 and Figure 9As shown, the stone removal and sand spreading device 800 is fixed to the frame 300 and is used to remove stones and other foreign objects from the track and spread sand onto the track surface as needed. Optionally, the stone removal and sand spreading device 800 includes a stone remover 801, a stone remover mounting base 802, an adjusting threaded connector 803, a fastening threaded connector 804, a sand spreading bracket 805, and a sand spreading pipe 806. The stone remover 801 and the sand spreading pipe 806 are fixed to the sand spreading bracket 805. The sand spreading bracket 805 is fixed to the stone remover mounting base 802 via the adjusting threaded connector 803. The stone remover mounting base 802 is fixed to the frame 300 via the fastening threaded connector 804.

[0107] In one example, the frame 300 is provided with a stone-discharging and sand-spreading mounting base, which has a height-adjusting elongated hole. The fastening threaded connector 804 includes a fastening bolt and a fastening nut that are threaded together. The stone-discharging device mounting base 802 is connected to the stone-discharging and sand-spreading mounting base via the fastening threaded connector 804 passing through the height-adjusting elongated hole. Thus, the distance between the stone-discharging device 801 and the sand-spreading pipe 806 and the rail surface can be adjusted via the fastening threaded connector 804 and the height-adjusting elongated hole.

[0108] In one example, the stone ejector mounting base 802 is provided with an elongated hole; the adjusting threaded connector 803 includes a mating adjusting bolt and an adjusting nut. The sand spreading bracket 805 adjusts the distance between the stone ejector 801 and the sand spreading pipe 806 and the rail surface according to the wear of the wheel diameter through the adjusting threaded connector 803 and the elongated hole.

[0109] In one example, the stone-discharging device mounting base 802 is provided with two elongated holes, which extend vertically side by side.

[0110] In one embodiment of this disclosure, the stone-discharging and sand-spreading device 800 is designed as an integrated unit.

[0111] like Figure 10 As shown, the traction device adopts a push-pull short traction rod structure, consisting of a traction rod 901, traction rubber joints 902, and an anti-fall mechanism 903. One end of the traction rod 901 is installed on the frame 300 of the power bogie near the traction beam 302, and the other end is installed on the car body underframe. The traction rubber joints 902 are installed at both ends of the traction rod 901, which can buffer the vibration between the power bogie and the car body, effectively transmit traction and braking forces, and ensure safety and reliability.

[0112] In one embodiment of this disclosure, the power bogie can switch between 23t and 25t axle loads to meet the needs of different scenarios and realize platform-based design.

[0113] In one embodiment of this disclosure, all painted components of the power bogie are coated with water-based paint to reduce environmental pollution.

[0114] In an embodiment of the present disclosure, the operating parameters of the axle box 101 further include the temperature of the bearing in the axle box 101, the lateral acceleration of the axle box 101, and the longitudinal acceleration of the axle box 101. In this way, the data acquisition device 1100 can acquire the vertical acceleration, the lateral acceleration, the longitudinal acceleration of each axle box 101, and the temperature of the bearing in the axle box 101. Thus, referring to Figure 12 , the data acquisition device 1100 is a composite sensor capable of acquiring a plurality of different parameters. The data acquisition device 1100 is installed on each axle box 101 of the powered bogie to acquire the temperature of the bearing in the axle box 101 and the vertical, lateral, and longitudinal accelerations of the axle box 101.

[0115] In an embodiment of the present disclosure, referring to Figure 13 and Figure 14 , the locomotive is provided with a monitoring system of the powered bogie, which can realize the function of detecting the operating state of the key components of the powered bogie, and provide a data basis for reasonable arrangement of maintenance. In combination with intelligent monitoring data, the tread active grinding device 1000 (as shown in Figure 11 ) and the corresponding control method can be used to eliminate the polygon of the locomotive wheel 102 and improve the locomotive operating environment.

[0116] In an embodiment of the present disclosure, the monitoring system includes a data processor 100M and a display 200M. The data processor 100M processes the data acquired by the composite sensor, and the processed data is displayed on the display screen.

[0117] In an embodiment of the present disclosure, the data processor 100M includes a grinding control unit; the grinding control unit is configured to implement the following steps:

[0118] Step S110, acquiring the vertical acceleration of the axle box 101, the speed of the locomotive, and the wheel diameter of the wheel 102;

[0119] Step S120, performing spectral analysis on the vertical acceleration, the speed of the locomotive, and the wheel diameter of the wheel 102 in a first preset time period as a time section to determine the main frequency and the main frequency energy value of the wheel 102, and the polygon order of the wheel 102;

[0120] Step S130, sending the main frequency energy value and the polygon order to the display 200M so that the display 200M displays the main frequency energy value and the polygon order;

[0121] Step S140, when the main frequency energy value exceeds a set energy threshold, sending a grinding control signal to the tread active grinding device 1000 corresponding to the wheel 102 until the main frequency energy value does not exceed the set energy threshold.

[0122] The vertical acceleration of the axle box 101 can be obtained by the data acquisition device 1100. The speed of the locomotive can be obtained by a vehicle-mounted speed signal, or obtained, determined or detected by other means. The wheel diameter of the wheel 102 is a pre-set, current wheel diameter value in the monitoring system. In an example, when the wheel diameter value changes, the wheel diameter of the wheel 102 in the monitoring system can be updated.

[0123] In an embodiment of the present disclosure, step S120 comprises:

[0124] The collected vertical acceleration of the axle box 101 is subjected to frequency spectrum analysis in a first preset time period as a section to obtain a main frequency and a main frequency energy value; in combination with the speed of the locomotive and the wheel diameter of the wheel 102, the order of the polygon of the wheel 102 is analyzed.

[0125] Optionally, the first preset time period can be between 5-20 seconds, for example, it can be 10 seconds. Of course, in other embodiments of the present disclosure, the first preset time period can also be any other achievable time period as needed.

[0126] Step S130 can cause the display 200M to display the analysis result. Specifically, the value of the polygon order of the wheel 102 and the main frequency energy value can be displayed in the display 200M.

[0127] Through step S140, when the main frequency energy value exceeds a set energy threshold, the wheel polygon elimination process is started. In the wheel polygon elimination process, the data processor 100M can control the action of the corresponding tread active grinding device 1000 through the grinding control signal, for example, control the adhesion force and adhesion time, action intermittent time, etc. of the tread active grinding device 1000, until the main frequency energy value returns to a normal range, for example, returns to not more than the set energy threshold.

[0128] In an embodiment of the present disclosure, the grinding control signal comprises an adhesion force level parameter, which is used to control the adhesion force when the tread active grinding device 1000 adjoins the tread of the wheel 102. The tread active grinding device 1000 can control the adhesion force with the tread of the wheel 102 according to the received grinding control signal.

[0129] Optionally, in the grinding control signal, the adhesion force level parameter is selected from one of a first adhesion force level parameter, a second adhesion force level parameter, a third adhesion force level parameter, a fourth adhesion force level parameter, and a fifth adhesion force level parameter.

[0130] The first adhesion force level parameter can make the adhesion force be 0.8-1.2 kN.

[0131] The second abutting force level parameter can make the abutting force be 1.8-2.2 kN;

[0132] The third abutting force level parameter can make the abutting force be 2.8-3.2 kN;

[0133] The fourth abutting force level parameter can make the abutting force be 3.8-4.2 kN;

[0134] The fifth abutting force level parameter can make the abutting force be 4.8-5.2 kN.

[0135] Exemplarily, the first abutting force level parameter can make the abutting force be 1 kN;

[0136] The second abutting force level parameter can make the abutting force be 2 kN;

[0137] The third abutting force level parameter can make the abutting force be 3 kN;

[0138] The fourth abutting force level parameter can make the abutting force be 4 kN;

[0139] The fifth abutting force level parameter can make the abutting force be 5 kN.

[0140] Optionally, the grinding control signal comprises an abutting time parameter, which is used to control the abutting time when the tread active grinding device 1000 abuts against the tread of the wheel 102 and the time interval (action interval time, i.e. the time of disengaging abutting) between adjacent two abutting;

[0141] In an example, the ratio of the abutting time to the time interval is 1:2. Of course, the abutting time and the time interval can be freely adjusted according to needs.

[0142] In an embodiment of the present disclosure, the grinding control unit can freely combine the abutting time parameter and the abutting force level parameter according to needs to obtain a suitable grinding control signal.

[0143] In an embodiment of the present disclosure, the grinding control unit has a learning module, which can determine the parameters of the wheel polygon elimination process, such as the abutting force level, the abutting time and the time interval, according to the main frequency energy value and the polygon order through learning the wheel polygon elimination process and the wheel polygon elimination result, to adaptively achieve the optimal wheel polygon elimination effect.

[0144] In an embodiment of the present disclosure, the data processor 100M further comprises a temperature monitoring unit. The temperature monitoring unit is configured to display the instantaneous temperature measurement value of the temperature signal collected by the data collection device 1100 on the display 200M. The temperature monitoring unit is further configured to compare the instantaneous temperature measurement value with a temperature threshold value, and cause the display 200M to simultaneously display a temperature alarm signal when the instantaneous temperature measurement value exceeds the temperature threshold value, i.e., to display the instantaneous temperature measurement value and the alarm signal on the display 200M. In this way, the monitoring system can monitor and display the bearing temperature of each axle box 101, and alarm when the bearing temperature exceeds the temperature threshold value.

[0145] In an embodiment of the present disclosure, the data processor 100M comprises a life prediction unit. The life prediction unit is configured to calculate the power density spectrum (e.g., calculate the power density spectrum of the acceleration in three directions) according to the collected vertical, lateral and longitudinal accelerations of the axle box 101, take the calculation results into the pre-prepared calculation model and program of the dynamic stress of the locomotive bogie 300, and calculate the equivalent stress amplitude of each part of the bogie 300 and convert it into the residual life (e.g., calculate the residual life of each part of the bogie 300 according to the power density spectrum and the pre-prepared life calculation model of the bogie 300), form a cloud chart and display it on the display 200M, and different levels of residual life are distinguished by color. In this way, the monitoring system can predict the life of each part of the bogie 300 and display it through the display 200M, which can judge the running state of the locomotive and the stress state of the key components of the bogie in real time, and thus achieve the effect of early warning before failure occurs. Moreover, this also provides a data basis for reasonable maintenance arrangement.

[0146] Optionally, the second preset time period can be longer than the first preset time period, for example, it can be between 0.5-2 minutes. In an example, the second preset time period can be 1 minute. Of course, in other embodiments of the present disclosure, the second preset time period can also be any other achievable time period as needed.

[0147] In an embodiment of the present disclosure, the power bogie detection system of the locomotive is a wireless monitoring system, and at least part of the signal transmission is performed in a wireless communication manner. In this way, the wiring can be simplified.

[0148] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A monitoring system of a powered bogie of a locomotive, characterized in that, the powered bogie comprises: a frame; an axle arrangement comprising an axle and two wheels fixedly connected to the axle, and further comprising an axle box body rotatably connected to the axle outside the wheels; a primary suspension arrangement connecting the axle box body and the frame to suspend the axle box body on the frame, the primary suspension arrangement comprising a primary suspension spring, a primary vertical stop, a primary elastic lateral stop, a primary vertical damper and an axle box drag link; a secondary suspension arrangement comprising a secondary rubber stack, a secondary lateral damper and a secondary lateral stop, the secondary suspension arrangement being configured to carry and fix a vehicle body; wherein the bogie suspension system adopts a primary soft and secondary hard suspension parameter; the primary suspension arrangement adopts a design mode of a primary suspension spring combined with a single axle box drag link and a primary elastic lateral stop, a small stiffness of the primary suspension spring can realize a large primary deflection, and the single axle box drag link and the primary elastic lateral stop provide suitable longitudinal and lateral positioning stiffness of the axle box body; a driving device connected to the frame and the axle to drive the axle arrangement; a plurality of data acquisition devices corresponding to each axle box body; the data acquisition device is arranged on the corresponding axle box body and is configured to acquire and send out the operating parameters of the axle box body; the operating parameters of the axle box body include the vertical acceleration of the axle box body; a plurality of tread active grinding devices corresponding to each wheel; the tread active grinding device can grind the tread of the corresponding wheel in response to a grinding control signal; the monitoring system comprises a data processor and a display; the data processor comprises a grinding control unit; the grinding control unit is configured to: obtain the vertical acceleration of the axle box body, the speed of the locomotive and the wheel diameter of the wheel; perform a frequency spectrum analysis on the vertical acceleration, the speed of the locomotive and the wheel diameter of the wheel in a first preset time period as a time section to determine the main frequency and the main frequency energy value of the wheel, and the polygon order of the wheel; send the main frequency energy value and the polygon order to the display so that the display displays the main frequency energy value and the polygon order; when the main frequency energy value exceeds a set energy threshold, send a grinding control signal to the tread active grinding device of the corresponding wheel until the main frequency energy value does not exceed the set energy threshold; wherein the grinding control signal comprises a contact force level parameter for controlling the contact force of the tread active grinding device when it contacts the tread of the wheel; wherein the grinding control unit has a learning module, which determines the contact force level, contact time and time interval in the grinding control signal according to the main frequency energy value and the polygon order through learning of the process and result of eliminating wheel polygon, to achieve the optimal effect of eliminating wheel polygon in an adaptive manner. The data processor further comprises a life prediction unit; the life prediction unit is configured to calculate power density spectrum in a second preset time period as a section according to the collected vertical acceleration, lateral acceleration and longitudinal acceleration of the axle box, bring the calculation result into a prepared dynamic stress calculation model and calculation program of the locomotive bogie frame, convert the calculated equivalent stress amplitude of each part of the frame into residual life to form a cloud chart and display on a display, and different levels of residual life are distinguished by color. The grinding control signal comprises a abutting time parameter, the abutting time parameter is used for controlling the abutting time when the tread active grinding device abuts against the tread of the wheel and the time interval between adjacent two abuttings; the ratio of the abutting time to the time interval is 1:

2.

2. The monitoring system for a powered truck of a locomotive of claim 1 wherein, The abutting force level parameter is one of a first abutting force level parameter, a second abutting force level parameter, a third abutting force level parameter, a fourth abutting force level parameter and a fifth abutting force level parameter; The first abutting force level parameter can make the abutting force be 0.8-1.2kN; The second abutting force level parameter can make the abutting force be 1.8-2.2kN; The third abutting force level parameter can make the abutting force be 2.8-3.2kN; The fourth abutting force level parameter can make the abutting force be 3.8-4.2kN; The fifth abutting force level parameter can make the abutting force be 4.8-5.2kN.

3. A locomotive characterized by, The monitoring system of the power bogie of the locomotive comprises the monitoring system of the power bogie of the locomotive according to any one of claims 1-2.

4. The locomotive of claim 3, wherein, The operation parameters of the axle box further comprise: The temperature of the bearing in the axle box, the lateral acceleration of the axle box and the longitudinal acceleration of the axle box.

5. The locomotive of claim 3, wherein, The power bogie of the locomotive further comprises a brake corresponding to each wheel; at least part of the installation height of the brake is higher than the axle.

6. The locomotive of claim 3, wherein, The driving device comprises a driving motor and a motor hanger; The lower end of the motor hanger is hinged to the driving motor; The upper end of the motor hanger is hinged to the frame; The motor hanger has an arc-shaped groove matched with the shell of the driving motor, so that the motor hanger tightly abuts against the shell of the driving motor.

7. The locomotive of claim 3, wherein, The frame comprises two side beams on both sides, a traction beam, a cross beam and an end beam connecting the two side beams; The power bogie of the locomotive further comprises a push-pull type short traction rod; the push-pull type short traction rod comprises a traction rod, a traction rubber joint and a falling prevention mechanism; one end of the traction rod is installed on one end of the frame close to the traction beam, and the other end is used for being installed on the vehicle body underframe; the traction rubber joint is arranged between the traction rod and the end beam, and the traction rubber joint is arranged between the traction rod and the vehicle body underframe.

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