Straddle type monorail bogie and straddle type monorail train

Abstract

The straddle type monorail bogie comprises a framework assembly, a walking wheel assembly, a driving assembly and a planetary gear reducer, the framework assembly comprises a framework body and a fixing assembly, and the fixing assembly is detachably and fixedly connected with a connecting beam in the framework body so that the fixing assembly and the connecting beam can detachably clamp the driving assembly; the driving assembly, the walking wheel assembly and the planetary gear reducer are integrated into a whole, and the driving assembly, the walking wheel assembly and the planetary gear reducer can be separated from the framework assembly by disassembling the fixing assembly. The framework assembly is provided with the receding space for the driving assembly, the walking wheel assembly and the planetary gear speed reducer to be separated from the framework body from the lower side of the connecting beam, so that the walking wheel assembly, the driving assembly and the planetary gear speed reducer can be disassembled without disassembling the framework body, walking wheels do not need to move axially within the limited axial space size, and the structure is simple and convenient. According to the wheel replacing device, the mode of directly discharging the wheels downwards in the vertical direction can be achieved, the walking wheels are not disassembled and replaced, the wheel replacing time is saved, and the wheel replacing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of straddle-type monorail trains, and more specifically, to a straddle-type monorail train bogie and a straddle-type monorail train. Background Art

[0002] The straddle-type monorail is a strip-shaped beam on which the train straddles and travels. It has the advantages of low noise, small turning radius, strong climbing ability, low construction cost, and extremely flexible lines. It can adapt well to the natural conditions of mountain cities and other cities, providing convenience for people's lives. Since most monorails are built in mountain cities, the driving conditions are relatively complex, resulting in the actual service life of the monorail train running wheels being far lower than the designed service life, which will increase the frequency of running wheel replacement.

[0003] At present, the wheel-changing operation process of monorail trains is complicated. It is necessary to remove the bogie, cables, pipelines and other equipment from the train and arrange them in a certain order. After replacing the running wheels, it is necessary to reconnect and install the bogie, cables, pipelines and other equipment, and check whether the cables and pipelines are connected correctly and whether the connectors are secure. The separation and combination process of the bogie and the train takes a long time. This unpacking wheel-changing method makes the replacement of the running wheels complicated and time-consuming, thereby increasing the operating cost.

[0004] In summary, how to simplify the replacement of the running wheels to save wheel replacement time and improve wheel replacement efficiency is a problem that currently needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a straddle-type monorail train bogie and a straddle-type monorail train, which can simplify the replacement of running wheels, save wheel changing time, and improve wheel changing efficiency.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A straddle-type monorail bogie comprises: a frame assembly, a running wheel assembly, a drive assembly and a planetary gear reducer; wherein the frame assembly comprises a frame body and a fixed component, the frame body comprises a connecting beam, and the connecting beam and the fixed component are detachably fixedly connected; the running wheel assembly comprises a running wheel, a wheel axle and a wheel-side reduction hub, the drive assembly is used to drive the wheel axle to rotate, the wheel axle and the wheel-side reduction hub are transmission-connected via the planetary gear reducer, and the running wheel is fixed to the wheel-side reduction hub; the fixed component is detachably fixedly connected to the connecting beam and the drive assembly, and the fixed component and the wheel axle are both located on the lower side of the connecting beam; the frame assembly has a clearance space for the drive assembly, the running wheel assembly and the planetary gear reducer to detach from the frame body from the lower side of the connecting beam.

[0008] In some embodiments, the frame body is a gooseneck frame, and the frame body also includes a crossbeam, and the crossbeam and the connecting beam are distributed in sequence along the axial direction of the wheel axle, and there is an accommodation space for accommodating the running wheel assembly and the planetary gear reducer between the crossbeam and the connecting beam, and the running wheel assembly and the planetary gear reducer have a gap between the crossbeam; the connecting beam and the drive assembly correspond one to one, and the connecting beam is distributed on a single side of the running wheel.

[0009] In some embodiments, in the frame body, there are two connecting beams, and the two connecting beams are respectively located on both sides of the frame body in the axial direction of the wheel axle.

[0010] In some embodiments, the side of the planetary gear reducer away from the drive assembly is closer to the drive assembly than the side of the running wheel away from the drive assembly; or, the side of the planetary gear reducer away from the drive assembly is flush with the side of the running wheel away from the drive assembly.

[0011] In some embodiments, the planetary gear reducer includes: a sun gear, which is disposed on the wheel axle; a planetary gear set, which is meshed with the sun gear; a housing, which is meshed with the planetary gear set and fixedly connected to the wheel-side reduction hub via threaded fasteners; and a planetary carrier, on which the planetary gears in the planetary gear set are rotatably disposed.

[0012] In some embodiments, there are a plurality of threaded fasteners, which are sequentially distributed along the circumference of the housing, and the axial direction of the threaded fastener is parallel to the axial direction of the wheel axle.

[0013] In some embodiments, the drive assembly includes a driver, the output shaft of the driver is fixedly connected to the wheel axle via a coupling; the outer periphery of the coupling is provided with a coupling sleeve, and the coupling sleeve is fixedly connected to the outer shell of the driver; the outer periphery of the wheel axle is provided with a half-axle sleeve, one end of the half-axle sleeve is located between the coupling sleeve and the wheel axle, and the wheel axle and the half-axle sleeve are rotatably matched; the wheel-side reduction hub is outermostly fitted on the half-axle sleeve, and the wheel-side reduction hub and the half-axle sleeve are rotatably matched.

[0014] In some embodiments, the fixing assembly includes a lower pinch block and a bolt; the lower pinch block is detachably fixedly connected to the connecting beam via the bolt, and the driving assembly is located between the lower pinch block and the connecting beam and is clamped by the lower pinch block and the connecting beam.

[0015] In some embodiments, a brake disc assembly is further included, wherein the brake disc assembly is connected to the output shaft of the drive assembly, and the brake disc assembly is located at one end of the drive assembly away from the running wheel assembly.

[0016] A straddle-type monorail train comprises the straddle-type monorail bogie mentioned above.

[0017] The straddle-type monorail bogie provided in the present application includes: a frame assembly, a running wheel assembly, a drive assembly and a planetary gear reducer, wherein the running wheel assembly includes a running wheel, a wheel axle and a wheel-side reduction hub, the drive assembly drives the wheel axle to rotate, the wheel axle and the wheel-side reduction hub are connected by a planetary gear reducer, the planetary gear reducer reduces the power of the wheel axle and transmits it to the wheel-side reduction gear, the running wheel is fixed to the wheel-side reduction gear, thereby causing the running wheel to rotate and driving the vehicle body to move.

[0018] The frame assembly includes a frame body and a fixing component, the fixing component is detachably fixedly connected to a connecting beam in the frame body, so that the fixing component and the connecting beam can detachably clamp the driving assembly, the driving assembly, the running wheel assembly and the planetary gear reducer are integrated into one, so that the driving assembly, the running wheel assembly and the planetary gear reducer are all detachably fixedly connected to the connecting beam, so that the driving assembly, the running wheel assembly and the planetary gear reducer can be separated from the frame assembly by removing the fixing component; the frame assembly has a driving assembly, a running wheel assembly, and a planetary gear reducer. The planetary gear reducer is separated from the frame body from the lower side of the connecting beam to make way for the space, so that the running wheel assembly, the drive assembly and the planetary gear reducer can be separated from the frame assembly from the lower side of the connecting beam in the vertical direction. Therefore, the running wheel assembly, the drive assembly and the planetary gear reducer can be removed without disassembling the frame body. Within the limited axial space size, the running wheel does not need to move axially, and the wheel can be directly removed from the lower side in the vertical direction, which realizes the disassembly of the running wheel without disassembling and implementing the wheel changing, saving the time of wheel changing and improving the efficiency of wheel changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 An axonometric view of a straddle-type monorail train bogie provided in an embodiment of the present application;

[0021] Figure 2 An axonometric view of a frame body of a straddle-type monorail train bogie provided in an embodiment of the present application;

[0022] Figure 3 An axonometric diagram of the cooperation between the running wheel assembly and the drive assembly in the straddle-type monorail train bogie provided in an embodiment of the present application;

[0023] Figure 4 for Figure 3 A cross-sectional view of

[0024] Figure 5 for Figure 3 Axonometric drawing of the cooperation between the middle drive and the brake disc assembly;

[0025] Figure 6 for Figure 3 Axonometric drawing of the middle half shaft sleeve and the coupling sleeve;

[0026] Figure 7 An axonometric view of a wheel axle in a straddle-type monorail train bogie provided in an embodiment of the present application;

[0027] Figure 8 An axonometric view of the assembly of a wheel-side reduction hub and a planetary gear reducer housing in a straddle-type monorail train bogie provided in an embodiment of the present application;

[0028] Fig. 9 A side view of a planetary gear reducer in a straddle-type monorail train bogie provided in an embodiment of the present application;

[0029] Fig.10 A schematic diagram of the structure of a fixed component in a straddle-type monorail train bogie provided in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 100-frame assembly, 110-frame body, 111-connecting beam, 112-cross beam, 121-guide wheel, 122-stabilizing wheel, 123-auxiliary wheel, 130-fixing assembly, 131-lower pinch block, 132-bolt, 140-center pin, 150-air spring;

[0032] 200-running wheel assembly, 210-running wheel, 220-wheel axle, 221-semi-axle sleeve, 230-wheel side reduction hub, 240 first bearing, 250 second bearing, 260-oil seal end cover;

[0033] 300-drive assembly, 310-driver, 311-stator-rotor assembly, 320-coupling, 321-coupling sleeve;

[0034] 400-planetary gear reducer, 410-planetary gear set, 420-housing, 421-planet carrier, 430-sun gear, 440-threaded fastener;

[0035] 500-Brake disc assembly. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0038] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0039] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0040] The "parallel" and "perpendicular" involved in this application are "substantially parallel" and "substantially perpendicular" in actual operation. "Substantially parallel" can be understood as parallel with a certain error, and similarly, "substantially perpendicular" can be understood as perpendicular with a certain error.

[0041] like Figure 1-Figure 10 As shown, the straddle-type bogie provided in the embodiment of the present application includes: a frame assembly 100 , a running wheel assembly 200 , a drive assembly 300 and a planetary gear reducer 400 .

[0042] like Figure 1As shown, the drive assembly 300 and the planetary gear reducer 400 are both connected to the running wheel assembly 200 to form a connecting body, and the connecting body is connected to the frame assembly 100 to form a straddle-type bogie connected to the vehicle body.

[0043] like Figure 3-Figure 4 As shown, the running wheel assembly 200 includes a running wheel 210, an axle 220 and a wheel-side reduction hub 230. The output shaft of the drive assembly 200 is connected to the first end of the axle 220 and drives the axle 220 to rotate. The axle 220 is away from the second end of the drive assembly 200 and is connected to the wheel-side reduction hub 230 through a planetary gear reducer 400. In this way, the planetary gear reducer 400 reduces the power of the axle 220 and transmits it to the wheel-side reduction hub 230. The running wheel 210 is fixed to the wheel-side reduction hub 230, thereby causing the running wheel 210 to rotate and drive the vehicle body to move.

[0044] In actual situations, two running wheels 210 are provided in a running wheel assembly 200 , and both running wheels 210 are fixedly connected to the wheel-side reduction hub 230 , so that the wheel-side reduction hub 230 can drive the two running wheels 210 to rotate at the same time.

[0045] like Figure 1-Figure 3 As shown, the frame assembly 100 includes a frame body 110 and a fixing component 130, the frame body 110 includes a connecting beam 111, and the fixing component 130 is detachably fixedly connected to the connecting beam 111, so that the fixing component 130 and the connecting beam 111 can detachably clamp the driving assembly 300, thereby realizing a detachable fixed connection between the driving assembly 300 and the connecting beam 111.

[0046] The drive assembly 300 is used to drive the wheel shaft 220 to rotate, so that the drive assembly 300, the running wheel assembly 200 and the planetary gear reducer 400 are integrated into one. As mentioned above, the drive assembly 300 is detachably fixedly connected to the connecting beam 111, so that the drive assembly 300, the running wheel assembly 200 and the planetary gear reducer 400 are all detachably fixedly connected to the connecting beam 111. In this way, the running wheel assembly 200, the drive assembly 300 and the planetary gear reducer 400 can be separated from the frame assembly 100 by disassembling the fixing assembly 130. The frame assembly 100 has a clearance space for the driving assembly 300, the running wheel assembly 200 and the planetary gear reducer 400 to detach from the frame body 110 from the lower side of the connecting beam 111, so that the running wheel assembly 200, the driving assembly 300 and the planetary gear reducer 400 can detach from the frame body 110 from the lower side of the connecting beam 111, that is, the running wheel assembly 200, the driving assembly 300 and the planetary gear reducer 400 can detach from the frame assembly 100 from the lower side of the connecting beam 111. Therefore, the running wheel assembly 200, the driving assembly 300 and the planetary gear reducer 400 can be disassembled without disassembling the frame body 110, thereby realizing the disassembly of the running wheel 210 and the implementation of wheel changing without disassembling, saving the time of wheel changing and improving the efficiency of wheel changing.

[0047] Moreover, by disassembling the fixing assembly 130, the running wheel assembly 200, the drive assembly 300 and the planetary gear reducer 400 can be synchronously dropped vertically from the bottom of the frame assembly 100. Within the limited axial space size, the running wheel 210 does not need to move axially, and can be directly dropped out in the vertical direction, further saving the time for wheel changing and improving the efficiency of wheel changing.

[0048] like Figure 1 As shown, the frame assembly 100 further includes an auxiliary running wheel set, a center pin 140 and an air spring 150 .

[0049] The auxiliary running wheel group includes guide wheels 121, which are installed at the four corners of the frame body 110 for guiding when turning; auxiliary wheels 123 are installed on the front and rear end beams of the frame body 100 parallel to the axis of the wheel axle 220, which are used to assist the running wheel 220 in driving and continue to support the vehicle body when the running wheel 210 has a tire blowout, etc., to provide auxiliary protection.

[0050] The center pin 140 is located at the top center of the frame body 110 . The center pin 140 connects the car body and the bogie. Air springs 150 are respectively arranged on both sides of the center pin 140 . The air springs 150 provide buffering support for the car body.

[0051] In order to enable the frame assembly 100 to allow the drive assembly 300 to drop vertically from below the frame assembly 100, as shown in FIG. Figure 2As shown, the frame body 110 is a gooseneck frame, which is convenient for meeting the strength requirements of the bogie. Specifically, the connecting beam 111 is an arched structure with low ends and high middle, which is convenient for accommodating the drive assembly 300 below the connecting beam 111 and ensuring the strength of the frame body 110.

[0052] The frame body 110 also includes a crossbeam 112, and the crossbeam 112 and the connecting beam 111 are relatively distributed, and the crossbeam 112 and the connecting beam 111 are sequentially distributed along the axial direction of the wheel axle 220, so that there is an accommodating space for accommodating the running wheel assembly 200 and the planetary gear reducer 400 between the connecting beam 111 and the crossbeam 112, and there is a gap between the running wheel assembly 200 and the planetary gear reducer 400 and the crossbeam 112; the connecting beam 111 and the driving assembly 300 correspond one to one, and the connecting beam 111 is distributed on a single side of the running wheel 210. In this way, the frame body 100 has space for the vertical movement of the running wheel 200, so that the running wheel assembly 200 can be directly lowered in the vertical direction without axial movement; moreover, the connecting body formed by the driving assembly 300, the running wheel assembly 200 and the planetary gear reducer 400 is supported by only one connecting beam 111, thereby realizing single-position installation. During the disassembly process, only the connection between the connecting body and one connecting beam 111 needs to be disassembled, thereby further improving the work efficiency during the disassembly process of the running wheel 220.

[0053] In the embodiment of the present application, a frame assembly 100 can carry one or two connectors (driving assembly 300, running wheel assembly 200 and planetary gear reducer 400). Figure 1 and Figure 2 As shown, a frame assembly 100 carries two connecting bodies (drive assembly 300, running wheel assembly 200 and planetary gear reducer 400). The frame assembly 100 includes a first part and a second part in a direction perpendicular to the axial direction of the wheel axle 220, and each of the first part and the second part is connected to a connecting body. Since the drive assembly 300 is located on one side of the running wheel assembly 200, in order to ensure the balance and stability of the vehicle body during driving, as shown in FIG. Figure 1 As shown, in a frame assembly 100, two drive assemblies 300 are respectively located on both sides of the frame assembly 100 in the axial direction of the wheel axle 220, thus ensuring the balance and stability of the vehicle body during driving and improving the safety of the vehicle body driving.

[0054] It should be noted that, in the above structure, one frame body 110 includes two connection beams 111 , and the two connection beams 111 are respectively located on both sides of the frame body 110 in the axial direction of the wheel axle 220 .

[0055] As mentioned above, the running wheel assembly 200 and the planetary gear reducer 400 have a gap with the crossbeam 112. In order to facilitate the running wheel assembly 200, the drive assembly 300 and the planetary gear reducer 400 to fall synchronously from under the frame assembly 100, the above gap needs to be designed to be as large as possible.

[0056] In some embodiments, Figure 1 and Figure 4 As shown, the side of the planetary gear reducer 400 away from the drive assembly 300 is closer to the drive assembly 300 than the side of the running wheel 210 away from the drive assembly 300, so that the gap between the beam 112 and the planetary gear reducer 400 is larger than the gap between the beam 112 and the running wheel 210, so that the running wheel assembly 200 and the planetary gear reducer 400 can fall from the bottom of the frame body 110.

[0057] In some other embodiments, the side of the planetary gear reducer 400 away from the drive assembly 300 is flush with the side of the running wheel 210 away from the drive assembly 300, so that the gap between the beam 112 and the planetary gear reducer 400 is the same as the gap between the beam 112 and the running wheel 210, which can also ensure that the running wheel assembly 200 and the planetary gear reducer 400 fall from the bottom of the frame body 110.

[0058] In some other embodiments, the side of the running wheel 210 away from the drive assembly 300 is closer to the drive assembly 300 than the side of the planetary gear reducer 400 away from the drive assembly 300, and there is a gap between the planetary gear reducer 400 and the beam 112, that is, the gap between the beam 112 and the planetary gear reducer 400 is smaller than the gap between the beam 112 and the running wheel 210, and the running wheel assembly 200 and the planetary gear reducer 400 can still fall from the bottom of the frame body 110.

[0059] like Figure 7-Figure 9 As shown, the planetary gear reducer 400 includes a sun gear 430, a planetary gear set 410, a housing 420, and a planet carrier 421. Figure 7 As shown, the sun gear 430 is disposed at the second end of the axle 220 , the planetary gear set 410 is meshed with the sun gear 430 , and the planetary gear set 410 is rotatably disposed on the planet carrier 421 , so that the axle 220 transmits power to the planetary gear set 410 through the sun gear 430 .

[0060] The planetary gear set 410 includes a plurality of planetary gears, for example, Fig. 9As shown (the sun gear 430 is not shown in the figure), the planetary gear set 410 includes five planetary gears, which are all meshed with the sun gear 430 and rotatably connected to the planet carrier 421. The planetary gears are supported by the planet carrier 421 so that the planetary gears can share the load, thereby ensuring the stability of power transmission.

[0061] A housing 420 (also referred to as an outer gear ring) is meshed with the outer periphery of the planetary gear set 410. Figure 8-Figure 9 As shown (the teeth in the housing 420 are not visible in the figure), the housing 420 and the wheel-side reduction hub 230 are fixedly connected by threaded fasteners 440, so that the planetary gear set 410 drives the housing 420 to rotate, thereby driving the wheel-side reduction hub 230 to rotate, and realizing power transmission to the running wheel 210.

[0062] In the above structure, after the connecting body falls from the bottom of the frame body 110, the threaded fastener 440 connecting the outer shell 420 and the wheel-side reduction hub 230 can be directly removed. After the threaded fastener 440 is removed, the wheel-side reduction hub 230 and the running wheel 210 can be removed. This further facilitates the replacement of the running wheel 210 and further improves the wheel changing efficiency.

[0063] In order to reduce the axial dimension of the axle 220 after the planetary gear reducer 400 is connected to the running wheel assembly 200, as shown in FIG. Figure 8-Figure 9 As shown, there are multiple threaded fasteners 440, all of which are distributed in sequence along the circumference of the housing 420, and the axial direction of the threaded fasteners 440 is parallel to the axial direction of the axle 220, so that the housing 220 can be closely connected with the wheel-side reduction hub 230, reducing the axial size of the axle 220 after the planetary gear 400 is connected to the running wheel assembly 200, further facilitating the wheel changing operation and improving the wheel changing efficiency. In the embodiment of the present application, the drive assembly 300 includes a driver 310, and the output shaft of the driver 310 is fixedly connected to the axle 220 via a coupling 320, providing overload protection for the power transmission between the driver 310 and the axle 220. Figure 7 As shown, in order to reduce the size of the driver 310, the driver 310 can be a permanent magnet motor, in which the stator-rotor assembly 311 is connected to the axle 220 via a coupling 320, thereby reducing the overall size of the drive assembly 300; it also reduces the weight of the driver 310, making it easier to remove the connector from the bottom of the frame body 110.

[0064] Since the diameter of the wheel axle 220 is significantly different from the diameter of the hub of the running wheel 210, in order to support and protect the wheel axle 220 and the coupling 320, as shown in FIG. Figure 4 and Figure 6As shown, a coupling sleeve 321 is sleeved on the outer periphery of the coupling 320, and a first end of the coupling sleeve 321 is fixedly connected to the housing of the driver 310, and a second end of the coupling sleeve 321 away from the driver 310 extends into the hub of the running wheel 210; a half-axle sleeve 221 is sleeved on the outer periphery of the wheel axle 220, and one end of the half-axle sleeve 221 is located between the coupling sleeve 321 and the wheel axle 220, and a half-axle sleeve 221 is located between the wheel axle 220. A first bearing 240 is provided to enable the wheel axle 220 and the half-axle sleeve 221 to rotate and cooperate, the wheel side reduction hub 230 is sleeved on the half-axle sleeve 221, and a second bearing 250 is provided between the wheel side reduction hub 230 and the half-axle sleeve 221 to enable the wheel side reduction hub 230 and the half-axle sleeve 221 to rotate and cooperate, and the second bearing 250 is provided as a pair distributed at both ends of the wheel side reduction hub 230 to axially limit the half-axle sleeve 221. In this way, the wheel axle 220 is supported and protected by the cooperation of the half-axle sleeve 221 and the coupling sleeve 321, ensuring that the wheel axle 220 can be stably driven.

[0065] like Figure 8 As shown, an oil seal end cover 260 is provided at one end of the wheel-side reduction hub 230 away from the planetary gear reducer 400, which is used to seal the wheel-side reduction hub 230 and the half-axle sleeve 221, prevent the leakage of lubricant between the wheel-side reduction hub 230 and the half-axle sleeve 221 and the intrusion of foreign substances, ensure the stable transmission of the wheel-side reduction hub 230, and further ensure the stability of the power transmission.

[0066] like Figure 3-Figure 4 As shown, the fixing component 130 clamps and fixes the driving assembly 300 by clamping the coupling sleeve 321 .

[0067] like Fig.10 As shown, the fixing assembly includes a lower pinch block 131 and a bolt 132, and the lower pinch block 131 is detachably fixedly connected to the connecting beam 111 through the bolt 132. The lower pinch block 131 has a groove for accommodating a part of the structure of the driving assembly 300.

[0068] As mentioned above, the lower pinch block 131 is detachably fixedly connected to the connecting beam 111 by the bolt 132, and the driving assembly 300 is located between the lower pinch block 131 and the connecting beam 111 and is clamped by the lower pinch block 131 and the connecting beam 111. After the bolt 132 is removed, the lower pinch block 131 is separated from the connecting beam 111 and the driving assembly 300, the running wheel assembly 200 and the planetary reducer 400 are released.

[0069] In the case where the drive assembly 300 includes a coupling sleeve 321, the lower pinch block 131 can be selected to have a groove for accommodating the coupling sleeve 321. The coupling sleeve 321 is located between the lower pinch block 131 and the connecting beam 111 and is clamped by the lower pinch block 131 and the connecting beam 111. In this way, the contact area between the lower pinch block 131 and the drive assembly 300 is increased, and the clamping stability of the fixing component 130 on the drive assembly 300 is increased.

[0070] like Figure 5 As shown, the straddle-type monorail bogie provided in the embodiment of the present application also includes a brake disc assembly 500, which is connected to the output shaft of the drive assembly 300, and the braking of the running wheel assembly 200 is achieved by braking the output shaft of the drive assembly 300, and the brake disc assembly 500 is located at one end of the drive assembly 300 away from the running wheel assembly 200, so that the drive assembly 300 and the brake disc assembly 500 are both located on a single side of the running wheel assembly 200, so that there is still a moving gap between the side of the running wheel assembly 200 connected to the planetary gear reducer 400 and the frame body 110.

[0071] When the running wheel 210 of the straddle-type bogie provided in the embodiment of the present application needs to be replaced and overhauled, the monorail train is first parked at the maintenance station, the frame assembly 100 and the car body are supported, and then the bolts 132 are removed to release the connection between the lower pinch block 131 and the connecting beam 111, so that the running wheel assembly 200, the drive assembly 300 and the planetary gear reducer 400 are synchronously dropped from the bottom of the frame assembly 100, and the running wheel 210 can be directly and vertically lowered without axial movement within the limited axial space size, thereby achieving the purpose of changing wheels without disassembling the running wheel 210, thereby saving the time of wheel changing and improving the efficiency of rapid wheel changing.

[0072] An embodiment of the present application further provides a straddle-type monorail train, which comprises the straddle-type monorail bogie in the above embodiment.

[0073] Since the above-mentioned straddle-type monorail bogie has the above-mentioned technical effects, and the above-mentioned straddle-type monorail train includes the above-mentioned straddle-type monorail bogie, the above-mentioned straddle-type monorail train also has corresponding technical effects, which will not be repeated here.

[0074] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A straddle-type monorail bogie, characterized in that: include: A frame assembly (100), a running wheel assembly (200), a drive assembly (300) and a planetary gear reducer (400); The frame assembly (100) comprises a frame body (110) and a fixing assembly (130), the frame body (110) comprises a connecting beam (111), and the connecting beam (111) and the fixing assembly (130) are detachably fixedly connected; The running wheel assembly (200) comprises a running wheel (210), a wheel axle (220) and a wheel-side reduction hub (230); the driving assembly (300) is used to drive the wheel axle (220) to rotate; the wheel axle (220) and the wheel-side reduction hub (230) are connected in transmission via the planetary gear reducer (400); and the running wheel (210) is fixed to the wheel-side reduction hub (230); The fixing assembly (130) is detachably fixedly connected to the connecting beam (111) and the driving assembly (300), and the fixing assembly (130) and the wheel axle (220) are both located at the lower side of the connecting beam (111); the frame assembly (100) has a clearance space for the driving assembly (300), the running wheel assembly (200) and the planetary gear reducer (400) to be separated from the frame body (110) from the lower side of the connecting beam (111).

2. The straddle-type monorail bogie according to claim 1, characterized in that: The frame body (110) is a gooseneck frame, and the frame body (110) further comprises a crossbeam (112), the crossbeam (112) and the connecting beam (111) are sequentially distributed along the axial direction of the wheel axle (220), and there is an accommodation space between the crossbeam (112) and the connecting beam (111) for accommodating the running wheel assembly (200) and the planetary gear reducer (400), and there is a gap between the running wheel assembly (200) and the planetary gear reducer (400) and the crossbeam (112); The connection beams (111) correspond to the drive assemblies (300) one by one, and the connection beams (111) are distributed on one side of the running wheels (210).

3. The straddle-type monorail bogie according to claim 2, characterized in that: In the frame body (110), there are two connection beams (111), and the two connection beams (111) are respectively located on two sides of the frame body (110) in the axial direction of the wheel axle (220).

4. The straddle-type monorail bogie according to claim 2, characterized in that: The side of the planetary gear reducer (400) away from the drive assembly (300) is closer to the drive assembly (300) than the side of the running wheel (210) away from the drive assembly (300); or, the side of the planetary gear reducer (400) away from the drive assembly (300) is flush with the side of the running wheel (210) away from the drive assembly (300).

5. The straddle-type monorail bogie according to claim 2, characterized in that: The planetary gear reducer (400) comprises: A sun gear (430), the sun gear (430) being arranged on the wheel shaft (220); A planetary gear set (410), the planetary gear set (410) meshing with the sun gear (430); A housing (420), the planetary gear set (410) and the housing (420) are meshed, and the housing (420) and the wheel-side reduction hub (230) are fixedly connected via a threaded fastener (440); A planet carrier (421), on which the planetary gears in the planetary gear set (410) are rotatably arranged.

6. The straddle-type monorail bogie according to claim 5, characterized in that: There are a plurality of threaded fasteners (440), and the plurality of threaded fasteners (440) are sequentially distributed along the circumference of the housing (420), and the axial direction of the threaded fasteners (440) is parallel to the axial direction of the wheel axle (220).

7. The straddle-type monorail bogie according to claim 2, characterized in that: The drive assembly (300) comprises a driver (310), wherein an output shaft of the driver (310) is fixedly connected to the wheel shaft (220) via a coupling (320); A coupling sleeve (321) is sleeved on the outer periphery of the coupling (320), and the coupling sleeve (321) is fixedly connected to the outer shell of the driver (310); The outer circumference of the wheel axle (220) is sleeved with a half-axle sleeve (221), one end of the half-axle sleeve (221) is located between the coupling sleeve (321) and the wheel axle (220), and the wheel axle (220) and the half-axle sleeve (221) are rotatably matched; The wheel side reduction hub (230) is externally mounted on the half-axle sleeve (221), and the wheel side reduction hub (230) and the half-axle sleeve (221) are rotationally matched.

8. The straddle-type monorail bogie according to claim 1, characterized in that: The fixing assembly (130) comprises a lower pinch block (131) and a bolt (132); The lower pinch block (131) is detachably fixedly connected to the connecting beam (111) via the bolt (132); the drive assembly (300) is located between the lower pinch block (131) and the connecting beam (111) and is clamped by the lower pinch block (131) and the connecting beam (111).

9. The straddle-type monorail bogie according to claim 1, characterized in that: It also includes a brake disc assembly (500), the brake disc assembly (500) being connected to the output shaft of the drive assembly (300), and the brake disc assembly (500) being located at one end of the drive assembly (300) away from the running wheel assembly (200).

10. A straddle-type monorail train, characterized in that: It comprises a straddle-type monorail bogie as described in any one of claims 1 to 9.

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