CN113830126B - Guide wheel mounting seat, guide device with same and rail vehicle - Google Patents
Guide wheel mounting seat, guide device with same and rail vehicle Download PDFInfo
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- CN113830126B CN113830126B CN202010591498.9A CN202010591498A CN113830126B CN 113830126 B CN113830126 B CN 113830126B CN 202010591498 A CN202010591498 A CN 202010591498A CN 113830126 B CN113830126 B CN 113830126B
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- inner end
- guide wheel
- fixing shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F9/00—Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
- B61F5/42—Adjustment controlled by buffer or coupling gear
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- Fluid-Damping Devices (AREA)
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Abstract
The invention provides a guide wheel mounting seat, a guide device with the guide wheel mounting seat and a rail vehicle, wherein the guide wheel mounting seat comprises a mounting bracket, a wheel shaft fixing shaft, an elastic piece and a shock absorber, the outer end of the mounting bracket is provided with a buffering guide part, the buffering guide part is provided with a guide hole penetrating through the buffering guide part, the inner end of the wheel shaft fixing shaft penetrates through the guide hole, the wheel shaft fixing shaft is matched with the guide hole, the wheel shaft fixing shaft can move along the penetrating direction of the guide hole, the outer end of the elastic piece is connected with the inner end of the wheel shaft fixing shaft, and the outer end of the shock absorber is connected with the inner end of the wheel shaft fixing shaft. According to the guide wheel mounting seat provided by the invention, the stability of the rail vehicle during bending is further improved by optimizing the motion guide structure and the buffering and vibration reducing structure aiming at the guide wheel, and the service life of the guide wheel mounting seat is greatly prolonged, so that the guide wheel mounting seat is suitable for an urban rail transit system with long operation time and large transportation capacity.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to a guide wheel mounting seat, a guide device with the guide wheel mounting seat and a rail vehicle.
Background
When the rail vehicle passes a bend, the pressure on the guide wheel close to the inner side of the bend is different from the pressure on the guide wheel close to the outer side of the bend, so that the jolt is obvious when the rail vehicle passes the bend, and the trafficability of the rail vehicle is poor. In order to improve the stability of a rail vehicle during passing a curve, in the prior art, for example, patent CN201720637991.3 discloses a straddle type monorail engineering vehicle, which realizes transverse buffering by connecting a guide wheel shaft and a bogie through a spring and guides the movement of the guide wheel shaft by arranging a long hole. However, the guide wheel mounting structure in the prior art has a poor stress environment, is easy to lose efficacy and short in service life, and cannot be applied to an urban rail transit system with long running time and large traffic volume.
Disclosure of Invention
Aiming at the technical problems, the invention provides the guide wheel mounting seat of the rail vehicle, which greatly prolongs the service life of the guide wheel mounting seat by optimizing a motion guide structure and a buffering and damping structure aiming at the guide wheel, so that the guide wheel mounting seat is suitable for urban rail transit systems with long operation time and large transportation capacity, and simultaneously improves the stability of the rail vehicle during passing a curve.
The specific technical scheme of the invention is as follows:
a guide wheel mount for a rail vehicle adapted to connect a guide wheel and a guide frame of the rail vehicle, comprising:
the mounting device comprises a mounting bracket, a buffer guide part and a guide rod, wherein the outer end of the mounting bracket is provided with the buffer guide part, the buffer guide part is provided with a guide hole which penetrates through the buffer guide part, and the inner end of the mounting bracket is fixed on the guide frame;
the outer end of the wheel shaft fixing shaft is connected with the guide wheel, the inner end of the wheel shaft fixing shaft penetrates through the guide hole, the wheel shaft fixing shaft is matched with the guide hole, and the wheel shaft fixing shaft can move along the penetrating direction of the guide hole;
the inner end of the elastic piece is connected with the guide frame, and the outer end of the elastic piece is connected with the inner end of the wheel axle fixing shaft;
the inner end of the shock absorber is connected with the guide frame, and the outer end of the shock absorber is connected with the inner end of the wheel shaft fixing shaft.
When the guide wheel is subjected to a force which is not parallel to the penetrating direction of the guide hole, the wheel shaft fixing shaft is arranged in the guide hole in a penetrating mode, so that a large contact surface is formed between the wheel shaft fixing shaft and the mounting bracket, the contact stress between the wheel shaft fixing shaft and the mounting bracket is reduced, and the service life of the guide wheel mounting seat is prolonged; meanwhile, the shock absorber is arranged to attenuate the telescopic motion of the elastic part, so that the transverse impact force borne by the guide wheel, the guide wheel mounting seat and the guide frame is relieved, the reliability and the service life of the guide wheel mounting seat are further improved, and the transverse stability of a rail vehicle is further improved, so that the shock absorber is suitable for urban rail transit systems with long running time and large traffic volume.
In addition, the guide wheel mount according to the present invention may have the following additional technical features.
In some examples of the invention, the guide wheel mount further comprises a wear bushing; the wear-resistant bush is arranged between the guide hole and the wheel axle fixing shaft, the guide hole is sleeved outside the wear-resistant bush, and the wear-resistant bush is sleeved outside the wheel axle fixing shaft. The wheel shaft fixing shaft is matched with the guide hole through the wear-resistant bush, so that the stress environment of the wheel shaft fixing shaft and the guide hole is optimized, the service life of the wheel shaft fixing shaft and the service life of the mounting bracket are prolonged, the wear-resistant bush is convenient to replace after failure, and the service life of the guide wheel mounting seat is further prolonged.
In some examples of the invention, the wear-resistant bushing is provided with a limiting flange, the axle fixing shaft is provided with a limiting boss, the inner side of the limiting flange is matched with the outer end face of the buffer guide part, and the outer side of the limiting flange is opposite to the limiting boss. When the compression amount of the elastic part reaches a certain value, the limiting boss of the wheel shaft fixing shaft is in contact with the limiting flanging of the wear-resistant bushing, so that the reliability of the guide wheel mounting seat is further improved, and the service life of the guide wheel mounting seat is further prolonged.
In some examples of the invention, the wear bushing is at least partially of a flexible construction; the inner end of the shock absorber is hinged with the guide frame, so that the shock absorber can rotate around the front-back direction relative to the guide frame. The flexible structure of the wear-resistant bushing is combined with the hinging of the inner end of the shock absorber and the guide frame, so that the wheel shaft fixing shaft can swing around the front and back direction to a certain extent, the guide wheel mounting seat is prevented from generating larger stress when the guide wheel receives the impact force in the up-down direction, and the service life of the guide wheel mounting seat is prolonged.
In some examples of the invention, the shock absorber comprises a piston rod, a piston and a piston sleeve, the outer end of the piston rod is connected with the inner end of the axle fixing shaft, the inner end of the piston rod is connected with the piston, the outer end of the piston sleeve is sleeved on the piston, the piston can move relative to the piston sleeve along the extending direction of the piston sleeve, and the inner end of the piston sleeve is suitable for being connected with the guide frame. The telescopic function of the shock absorber is realized through the connection relation and the matching relation among the piston rod, the piston and the piston sleeve, structural conditions are provided for damping vibration attenuation of the shock absorber, and the shock absorber is simple in structure and reliable in movement.
In some examples of the present invention, the shock absorber further comprises a piston rod stop disposed externally of the piston rod; the inner end of the piston rod stopper is opposite to the outer end of the piston sleeve; in the process that the piston moves along the extending direction of the piston sleeve, the inner end of the piston rod stop and the outer end of the piston sleeve are switched between a separation state and a contact matching state. Through setting up the piston rod backstop, when the compressive capacity of elastic component reaches certain compressive capacity, right the removal of piston carries out the backstop, avoids the elastic component excessively compresses and influences the normal direction work of leading wheel, further improves the reliability of leading wheel mount pad, life and rail vehicle's lateral stability to be applicable to the urban rail transit system that operating duration is long, the freight volume is big. In some embodiments, the piston rod stop is at least partially of a flexible construction, dampening the contact of the piston rod stop and the piston sleeve from violent impacts.
In some examples of the invention, the guide wheel mount further comprises a flexible mounting plate; the inner end of the mounting bracket and the inner end of the elastic piece are connected with the guide frame through the flexible mounting plate, and the inner end of the shock absorber penetrates through the flexible mounting plate and is connected with the guide frame. Through setting up flexible mounting panel can offset processing and installation error to a certain extent, reduces the machining precision requirement and then reduce cost, reduces simultaneously the installing support with the elastic component with contact stress between the leading truck improves the life of leading wheel mount pad.
In some examples of the invention, the mounting bracket further comprises two support portions; the two supporting parts are symmetrically arranged relative to a central plane of the buffering guide part, the outer ends of the two supporting parts are connected with the buffering guide part, and the inner ends of the two supporting parts are suitable for being connected with the guide frame. The supporting parts are symmetrically arranged, so that the light weight of the mounting bracket is realized while the supporting reliability is ensured.
The invention also provides a guide device for a rail vehicle, the rail vehicle being adapted to run on a rail, the guide device comprising a guide frame, guide wheels and the guide wheel mount provided according to the invention, the guide wheels being adapted to cooperate with the sides of the rail; the guide wheel is installed on the guide frame through the guide wheel installation seat.
The invention also provides a rail vehicle adapted to run on a rail, comprising a guide arrangement according to the invention, the guide wheels of which are adapted to cooperate with the sides of the rail.
When the guide wheel is subjected to a force which is not parallel to the penetrating direction of the guide hole, the axle fixing shaft is arranged in the guide hole in a penetrating way, so that a larger contact surface is formed between the axle fixing shaft and the mounting bracket, the contact stress between the axle fixing shaft and the mounting bracket is reduced, and the service life of the guide wheel mounting seat is prolonged; meanwhile, the shock absorber is arranged to attenuate the telescopic motion of the elastic part, so that the transverse impact force borne by the guide wheel, the guide wheel mounting seat and the guide frame is relieved, the reliability and the service life of the guide wheel mounting seat are further improved, and the transverse stability of the rail vehicle is further improved, so that the rail vehicle is suitable for urban rail transit systems with long running time and large traffic volume.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic view of a guide device and a rail vehicle provided by an embodiment of the present invention.
Fig. 2 is a top view of a guide device provided in an embodiment of the present invention.
Fig. 3 isbase:Sub>A cross-sectional view taken along the planebase:Sub>A-base:Sub>A in fig. 2.
Fig. 4 is a partially enlarged view of fig. 3.
Fig. 5 is a partial schematic view of a guide device provided in an embodiment of the present invention.
Fig. 6 is a cross-sectional view of a mounting bracket of a guide wheel mount provided by an embodiment of the present invention.
Reference numerals:
100. a guide wheel mounting seat;
10. mounting a bracket; 11. a buffer guide part; 11a, a guide hole; 11b, a stopper spacer; 12. a support portion; 12a, a first flanging; 12b, a support plate; 12c, a second flanging;
20. a wheel shaft fixing shaft; 21. a limiting boss;
30. an elastic member;
40. a shock absorber; 41. a piston rod; 42. a piston; 43. a piston sleeve; 44. a piston rod stop;
50. a wear-resistant bushing; 51. limiting and flanging;
60. an elastic member connecting portion; 61. an elastic member mounting recess; 62. the shock absorber is connected with the boss;
70. a flexible mounting plate;
200. a guide device; 210. a guide frame; 220. a guide wheel; 221. a guide wheel shaft; 222. a guide wheel body;
300. a rail vehicle; 310. an axle;
400. a track; 410. a longitudinal rail; 410a, the inner side surface of the longitudinal rail; 410b, the upper surface of the longitudinal rail.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "vertical", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Wherein the content of the first and second substances, xthe axial direction is the longitudinal direction,xthe positive direction of the axis is the front direction,xthe negative axis direction is back;ythe axial direction is a transverse direction,ythe positive direction of the axis is the left direction,ythe negative direction of the axis is right;zthe axial direction is vertical or vertical,zthe positive direction of the axis is upward,zthe axial negative direction is lower;xOythe plane is the horizontal plane, and the horizontal plane,xOzthe plane is the vertical plane in the longitudinal direction,yOzi.e. the transverse vertical plane. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the stationarity when improving rail vehicle and crossing the curved, realize horizontal buffering through spring coupling direction shaft and bogie among the prior art to through setting up the slot hole and leading the motion of direction shaft. The inventor of the present invention found through research and analysis that the slot hole in the prior art is provided on the mounting bracket, and the guide wheel shaft passes through the slot hole and then moves along the extending direction of the slot hole, however, during the running process of the rail vehicle, especially when the rail vehicle is bent too much, the guide wheel may be continuously and variably subjected to forces in various directions, while the contact area between the guide wheel shaft and the slot hole in the prior art is too small, even in line contact, when the guide wheel is subjected to a force which is not parallel to the extending direction of the slot hole, the contact stress between the guide wheel and the slot hole will be very large, which is very unfavorable for the long-term running of the rail vehicle. In addition, the length of slot hole itself among the above-mentioned prior art carries out the stroke to the removal of guide wheel axle and prescribes a limit, and this makes guide wheel axle easily bump with the both ends of slot hole, has further reduced the life of installing support.
Therefore, the prior art can be applied to engineering operation vehicles with short operation time and low transportation volume, and is not suitable for urban rail transit systems with long operation time and large transportation volume. For the reasons, the inventor improves the guide wheel mounting seat for the railway vehicle to obtain the technical scheme of the invention.
The following describes in detail the guide wheel mount 100, the guide device 200, and the rail vehicle 300 according to the embodiment of the present invention with reference to fig. 1 to 6. As shown in fig. 1-2, the rail vehicle 300 is adapted to travel on a rail 400, and includes a guide device 200, wherein the guide device 200 includes a guide frame 210, a guide wheel 220, and a guide wheel mount 100, the guide wheel 220 is engaged with a side surface of the rail 400 when the rail vehicle 300 travels on the rail 400, and the guide wheel 220 is mounted on the guide frame 210 through the guide wheel mount 100.
As shown in fig. 1, in some embodiments, the rail vehicle 300 further includes an axle 310, the guiding device 200 is disposed below the axle 310 and connected to the axle 310, and the axle 310 has left and right ends respectively provided with a running wheel (not shown); track 400 includes two longitudinal rails 410 disposed parallel to and spaced apart from each other, and guide wheels 220 are adapted to engage inner side surfaces 410a of longitudinal rails 410, and travel wheels are adapted to engage upper surfaces 410b of longitudinal rails 410. In other embodiments, the rail vehicle 300 may be a straddle monorail vehicle, a suspended monorail vehicle, a rubber-tyred tram, or the like.
In the description of the present invention, it should be noted that, unless otherwise specifically specified or limited, the term "inner" refers to a direction close to the guide frame, the term "outer" refers to a direction away from the guide frame, for example, the "inner end" of a certain component refers to one end thereof close to the guide frame in the left-right direction, the "outer end" of a certain component refers to the other end thereof away from the guide frame in the left-right direction, and the same applies to the "inner end face", "outer end face", "inner side", "outer side", and the like.
As shown in fig. 3-5, in some embodiments, guide wheel mount 100 includes a mounting bracket 10, an axle securing shaft 20, an elastomeric member 30, and a vibration damper 40. The outer end of the mounting bracket 10 is provided with a buffering guide part 11, the buffering guide part 11 is provided with a guide hole 11a penetrating through, and the inner end of the mounting bracket 10 is fixed on the guide frame 210. The outer end of the wheel shaft fixing shaft 20 is connected with the guide wheel 220, the inner end of the wheel shaft fixing shaft 20 passes through the guide hole 11a, the wheel shaft fixing shaft 20 is matched with the guide hole 11a, and the wheel shaft fixing shaft 20 can move along the penetrating direction of the guide hole 11 a. The inner end of the elastic member 30 is coupled to the guide frame 210, and the outer end of the elastic member 30 is coupled to the inner end of the axle fixing shaft 20. The inner end of the damper 40 is connected to the guide frame 210 and the outer end of the damper 40 is connected to the inner end of the axle fixing shaft 20.
It should be noted that the matching of the axle fixing shaft 20 and the guide hole 11a means that the matching surface between the axle fixing shaft 20 and the guide hole 11a has the same shape, so that the axle fixing shaft 20 and the guide hole 11a have a larger contact area.
When the guide wheel 220 receives a force which is not parallel to the penetrating direction of the guide hole 11a, the axle fixing shaft 20 is arranged in the guide hole 11a in a penetrating manner, so that a larger contact surface is formed between the axle fixing shaft 20 and the mounting bracket 10, the contact stress between the axle fixing shaft 20 and the mounting bracket 10 is reduced, and the service life of the guide wheel mounting seat 100 is prolonged; meanwhile, by arranging the shock absorber 40, the telescopic motion of the elastic member 30 is attenuated to reduce the transverse impact force on the guide wheel 220, the guide wheel mounting seat 100 and the guide frame 210, so that the reliability and the service life of the guide wheel mounting seat 100 and the transverse stability of the rail vehicle 300 are further improved, and the device is suitable for urban rail transit systems with long running time and large traffic volume.
In some embodiments, the guide wheel mount 100 of the rail vehicle 300 is arranged such that the penetrating direction of the guide hole 11a is parallel to the left-right direction, i.e., perpendicular to the advancing direction of the rail vehicle 300 along the rail 400, so that the elastic member 30 better buffers the lateral force received by the guide wheel 220.
As shown in fig. 4-5, in some embodiments, guide wheel mount 100 further includes wear bushing 50. Wear-resistant bush 50 is disposed between guide hole 11a and axle fixing shaft 20, and guide hole 11a is fitted around wear-resistant bush 50, and wear-resistant bush 50 is fitted around axle fixing shaft 20. The wheel shaft fixing shaft 20 is matched with the guide hole 11a through the wear-resistant bushing 50, direct matching between the wheel shaft fixing shaft 20 and the guide hole 11a is avoided, indirect matching is adopted, wear of the wheel shaft fixing shaft 20 and the guide hole 11a is reduced by means of the wear resistance of the wear-resistant bushing 50, the stress environment of the wheel shaft fixing shaft 20 and the guide hole 11a is optimized, the service lives of the wheel shaft fixing shaft 20 and the mounting support 10 are prolonged, and the machining precision requirements of the wheel shaft fixing shaft 20 and the guide hole 11a are reduced. And because wear-resisting bush 50 is an independent widget, be convenient for change after becoming invalid to further improve the holistic life of leading wheel mount 100.
As shown in fig. 4, in some embodiments, the wear-resistant bush 50 is provided with a limiting flange 51, the axle fixing shaft 20 is provided with a limiting boss 21, the inner side of the limiting flange 51 is engaged with the outer end face of the buffer guide 11, and the outer side of the limiting flange 51 is disposed opposite to the limiting boss 21. When the compression amount of the elastic element 30 reaches a certain value, the limit boss 21 of the axle fixing shaft 20 contacts with the limit flange 51 of the wear-resistant bushing 50, so that the further compression of the elastic element 30 is limited, the normal guide work of the guide wheel 220 is ensured, and the reliability and the service life of the guide wheel mounting seat 100 are further improved.
As shown in fig. 3-5, in some embodiments, wear bushing 50 is at least partially flexible and the inner end of shock absorber 40 is hingedly coupled to guide frame 210 such that shock absorber 40 can rotate relative to guide frame 210 in the fore-and-aft direction. During the running of the rail vehicle 300, the guide wheel 220 is subjected to a front-back friction force to rotate around its axis, and the guide wheel 220 is subjected to a left-right impact force to be buffered by its tire structure, but the guide wheel 220 is subjected to a vertical impact force to easily generate a large stress. Therefore, the flexible structure of the wear-resistant bushing 50 combined with the hinge connection between the inner end of the damper 40 and the guide frame 210 enables the axle fixing shaft 20 to swing around the front-rear direction to a certain extent, i.e., the outer end of the axle fixing shaft 20 can move up and down relative to the inner end, so as to avoid the guide wheel mounting seat 100 from generating large stress when the guide wheel 220 receives the impact force in the up-down direction, and prolong the service life of the guide wheel mounting seat 100. In some embodiments, a first portion (not shown) of the wear-resistant bush 50 that engages with the axle fixing shaft 20 is a flexible structure, or a second portion (not shown) of the wear-resistant bush 50 that engages with the guide hole 11a is a flexible structure, or a third portion (not shown) between the first portion and the second portion of the wear-resistant bush 50 is a flexible structure.
As shown in fig. 4, in some embodiments, the shock absorber 40 comprises a piston rod 41, a piston 42 and a piston sleeve 43, the outer end of the piston rod 41 is connected with the inner end of the axle fixing shaft 20, the inner end of the piston rod 41 is connected with the piston 42, the outer end of the piston sleeve 43 is sleeved on the piston 42, the piston 42 can move relative to the piston sleeve 43 along the extending direction of the piston sleeve 43, and the inner end of the piston sleeve 43 is suitable for being connected with the guide frame 210. The telescopic function of the shock absorber 40 is realized through the connection relation and the matching relation among the piston rod 41, the piston 42 and the piston sleeve 43, structural conditions are provided for damping shock absorption of the shock absorber 40, and the shock absorber is simple in structure and reliable in movement. In some embodiments, the piston sleeve 43 is filled with a damping material, so that when the elastic member 30 performs a telescopic motion, the shock absorber 40 performs a telescopic motion, and the telescopic motion of the elastic member 30 is attenuated by the damping material in the piston sleeve 43, so as to reduce the lateral impact force applied to the guide wheel 220, the guide wheel mounting base 100 and the guide frame 210.
As shown in FIG. 4, in some embodiments shock absorber 40 further comprises a piston rod stop 44, with piston rod stop 44 being disposed externally of piston rod 41. The inner end of the piston rod stop 44 is arranged opposite to the outer end of the piston sleeve 43; during the movement of the piston 42 in the extending direction of the piston sleeve 43, the inner end of the piston rod stopper 44 and the outer end of the piston sleeve 43 are switched between the separated state and the contact-fitted state. Through setting up piston rod backstop 44, carry out the backstop to the removal of piston 42 when the compressive capacity of elastic component 30 reaches certain compressive capacity, avoid elastic component 30 excessive compression and influence the normal direction work of leading wheel 220, further improve the reliability of leading wheel mount pad 100, life and the lateral stability of rail vehicle 300 to be applicable to the urban rail transit system that operating duration is long, the freight volume is big.
In some embodiments, when the amount of compression of the resilient member 30 is less than a first predetermined amount of compression, the inner end of the piston rod stop 44 separates from the outer end of the piston sleeve 43; when the amount of compression of the resilient member 30 is greater than the first predetermined amount of compression, the inner end of the piston rod stop 44 is in contact engagement with the outer end of the piston sleeve 43. The compression amount of the elastic member 30 is the difference between the original length of the elastic member 30 and the current length, wherein the original length of the elastic member 30 is the length of the elastic member 30 when the elastic member is not subjected to the force in the length direction. The first predetermined compression amount may be determined according to actual conditions of the line.
In some embodiments, the piston rod stop 44 is at least partially a flexible structure. When the compression amount of the elastic element 30 reaches a first preset compression amount, the inner end of the piston rod stopper 44 is in contact fit with the outer end of the piston sleeve 43, at this time, the limit boss 21 of the axle fixing shaft 20 and the limit flanging 51 of the wear-resistant bushing 50 are still in a separated state, and because the piston rod stopper 44 is at least partially of a flexible structure, namely, the elastic element 30 can be further compressed under the condition that the piston rod stopper 44 is deformed, when the compression amount of the elastic element 30 reaches a third preset compression amount, the limit boss 21 of the axle fixing shaft 20 is in contact fit with the limit flanging 51 of the wear-resistant bushing 50, so that the elastic element 30 is limited from further compression; obviously, the third predetermined amount of compression is greater than the first predetermined amount of compression, wherein the third predetermined amount of compression may be determined according to line practical conditions. The guide wheel mounting seat 100 has high reliability due to the matching of the limiting boss 21, the limiting flanging 51, the piston rod stopping 44 and other structures.
As shown in fig. 4, in some embodiments, the guide wheel mount 100 further includes an elastic member coupling part 60, an outer end of the elastic member coupling part 60 is coupled to an inner end of the axle fixing shaft 20, an inner end of the elastic member coupling part 60 is provided with an elastic member mounting recess 61, and the elastic member mounting recess 61 receives at least a portion of the elastic member 30. By providing the elastic member connecting portion 60 having the elastic member mounting recess 61, the mounting of the elastic member 30 is made easier and more stable, and the reliability of the guide wheel mounting seat 100 is improved.
As shown in fig. 4, in some embodiments, the width of the elastic member coupling part 60 is greater than the width of the axle fixing shaft 20 in a direction perpendicular to the penetrating direction of the guide hole 11 a. When the compression amount of the elastic member 30 is smaller than the second predetermined compression amount, the outer end surface of the elastic member connecting portion 60 is in contact engagement with the inner end surface of the buffer guide portion 11; when the compression amount of the elastic member 30 is greater than the second predetermined compression amount, the outer end surface of the elastic member connecting portion 60 is separated from the inner end surface of the buffer guide portion 11. Obviously, the second predetermined amount of compression is smaller than the first predetermined amount of compression, wherein the second predetermined amount of compression may depend on the line conditions. By providing the elastic member connecting portion 60, when the compression amount of the elastic member 30 reaches the second predetermined compression amount, the axle fixing shaft 20 is stopped, and the guide wheel 220 is prevented from being disconnected under the elastic force of the elastic member 30 to affect the normal guiding operation of the guide wheel 220.
As shown in fig. 4, in some embodiments, the outer end of the elastic member coupling part 60 is provided with a threaded hole, and the inner end of the axle fixing shaft 20 is provided with an external threaded part, and the external threaded part of the axle fixing shaft 20 is engaged with the threaded hole of the elastic member coupling part 60.
As shown in fig. 4, in some embodiments, the inner end surface of the buffering guide portion 11 is provided with a stop pad 11b, so that when the outer end surface of the elastic member connecting portion 60 is in contact fit with the inner end surface of the buffering guide portion 11, direct impact can be avoided, and the service life of the guide wheel mounting seat 100 can be prolonged.
As shown in fig. 4, in some embodiments, the spring attachment portion 60 is further provided with a damper attachment boss 62. The elastic member mounting recess 61 is an annular groove, and the elastic member mounting recess 61 surrounds the damper attachment boss 62. The elastic member 30 is a spring, and the elastic member 30 surrounds the damper 40. The damper attachment boss 62 is formed at the same time as the elastic member mounting recess 61, so that introduction of excessive parts is avoided, resulting in a simple structure.
As shown in fig. 4, in some embodiments, guide wheel mount 100 further includes a flexible mounting plate 70. The inner ends of the mounting bracket 10 and the elastic member 30 are connected to the guide frame 210 through the flexible mounting plate 70, and the inner end of the damper 40 passes through the flexible mounting plate 70 and is connected to the guide frame 210. Through setting up flexible mounting panel 70, can offset processing and installation error to a certain extent, reduce the machining precision requirement and then reduce cost, reduce the contact stress between installing support 10 and elastic component 30 and leading truck 210 simultaneously, improve leading wheel mount pad 100's life.
As shown in fig. 6, in some embodiments, the mounting bracket 10 further includes two support portions 12. The two support portions 12 are symmetrically disposed about a central plane of the buffering guide portion 11, outer ends of the two support portions 12 are connected to the buffering guide portion 11, and inner ends of the two support portions 12 are adapted to be connected to the guide frame 210. The symmetrically disposed support portions 12 allow the mounting bracket 10 to be lightweight while ensuring the reliability of support.
As shown in fig. 6, in some embodiments, the support portion 12 includes a first flange 12a, a support plate 12b, and a second flange 12c connected in series. The first flange 12a of each support portion 12 extends toward the other support portion 12, the first flange 12a being connected to the cushion guide portion 11; the second flange 12c of each support portion 12 extends away from the other support portion 12, and the second flange 12c is connected to the guide frame 210 or the flexible mounting plate 70. Through setting up the turn-ups structure, optimized the atress environment of supporting part 12, and be convenient for supporting part 12's installation.
In some embodiments, support plate 12b is an arcuate plate, and support plate 12b is convex in a direction away from the center of guide wheel mount 100. The arc-shaped structure of the support plate 12b provides the support portion 12 with better support strength.
As shown in fig. 5-6, in some embodiments, the distance between the two support portions 12 gradually increases from the outer end of the mounting bracket 10 to the inner end of the mounting bracket 10, so that the connection between the mounting bracket 10 and the guide frame 210 is more stable.
As shown in fig. 3, in some embodiments, the guide wheel 220 includes a guide wheel shaft 221 and a guide wheel body 222, and the guide wheel shaft 221 is disposed through the guide wheel body 222. The number of the guide wheel mounting seats 100 is at least two, the two guide wheel mounting seats 100 are respectively positioned above and below the guide wheel body 222, and the outer ends of the wheel axle fixing shafts 20 of the two guide wheel mounting seats 100 are respectively connected with two ends of the guide wheel axle 221. The guide wheel mounting seats 100 are arranged at the upper end and the lower end of the guide wheel shaft 221 for mounting, so that the mounting stability of the guide wheel 220 is improved. As shown in fig. 2, in some embodiments, there are four guide wheels 220, and the four guide wheels 220 are distributed in a rectangular shape; each guide wheel 220 is connected to the guide frame 210 by two guide wheel mounts 100.
When the guide wheel 220 receives a force which is not parallel to the penetrating direction of the guide hole 11a, the axle fixing shaft 20 is inserted into the guide hole 11a, so that a larger contact surface is formed between the axle fixing shaft 20 and the mounting bracket 10, the contact stress between the axle fixing shaft 20 and the mounting bracket 10 is reduced, and the service life of the guide wheel mounting seat 100 is prolonged; meanwhile, by arranging the shock absorber 40, the telescopic motion of the elastic member 30 is attenuated to reduce the transverse impact force applied to the guide wheel 220, the guide wheel mounting seat 100 and the guide frame 210, so that the reliability and the service life of the guide wheel mounting seat 100 and the transverse stability of the rail vehicle 300 are further improved, and the rail vehicle 300 is suitable for urban rail transit systems with long running time and large traffic volume.
Other constructions and operations of the guide wheel mounts 100, the guide apparatuses 200, and the rail vehicles 300 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A guide wheel mount for a rail vehicle adapted to connect a guide wheel and a guide frame of the rail vehicle, comprising:
the mounting device comprises a mounting bracket, a buffer guide part and a guide rod, wherein the outer end of the mounting bracket is provided with the buffer guide part, the buffer guide part is provided with a guide hole which penetrates through the buffer guide part, and the inner end of the mounting bracket is fixed on the guide frame;
the outer end of the wheel shaft fixing shaft is connected with the guide wheel, the inner end of the wheel shaft fixing shaft penetrates through the guide hole, the wheel shaft fixing shaft is matched with the guide hole, and the wheel shaft fixing shaft can move along the penetrating direction of the guide hole;
the inner end of the elastic piece is connected with the guide frame, and the outer end of the elastic piece is connected with the inner end of the wheel axle fixing shaft;
the inner end of the shock absorber is connected with the guide frame, and the outer end of the shock absorber is connected with the inner end of the wheel shaft fixing shaft.
2. The guide wheel mount of claim 1, further comprising a wear bushing; the wear-resistant bush is arranged between the guide hole and the wheel axle fixing shaft, the guide hole is sleeved outside the wear-resistant bush, and the wear-resistant bush is sleeved outside the wheel axle fixing shaft.
3. The guide wheel mounting seat according to claim 2, wherein the wear-resistant bushing is provided with a limiting flange, the wheel shaft fixing shaft is provided with a limiting boss, the inner side of the limiting flange is matched with the outer end face of the buffering guide part, and the outer side of the limiting flange is opposite to the limiting boss.
4. The guide wheel mount of claim 2, wherein the wear bushing is at least partially of a flexible construction; the inner end of the shock absorber is hinged with the guide frame, so that the shock absorber can rotate around the front-back direction relative to the guide frame.
5. The guide wheel mount of claim 1, wherein the shock absorber comprises a piston rod, a piston, and a piston sleeve, wherein an outer end of the piston rod is connected to an inner end of the axle fixing shaft, an inner end of the piston rod is connected to the piston, an outer end of the piston sleeve is sleeved on the piston, the piston is movable relative to the piston sleeve along an extending direction of the piston sleeve, and an inner end of the piston sleeve is adapted to be connected to the guide frame.
6. The guide wheel mount of claim 5, wherein the shock absorber further comprises a piston rod stop that is sleeved over the piston rod; the inner end of the piston rod stopper is opposite to the outer end of the piston sleeve; in the process that the piston moves along the extending direction of the piston sleeve, the inner end of the piston rod stop and the outer end of the piston sleeve are switched between a separation state and a contact matching state.
7. The guide wheel mount of claim 1, further comprising a flexible mounting plate; the inner end of the mounting bracket and the inner end of the elastic piece are connected with the guide frame through the flexible mounting plate, and the inner end of the shock absorber penetrates through the flexible mounting plate and is connected with the guide frame.
8. The guide wheel mount of claim 1, wherein the mounting bracket further comprises two supports; two the supporting parts are about a central plane symmetry setting of buffering guide part, and two the outer end of supporting part all with buffering guide part connects, two the inner of supporting part all be suitable for with the leading truck is connected.
9. A guide means for a rail vehicle adapted to run on a rail, characterised in that the guide means comprises a guide frame, guide wheels and a guide wheel mount according to any one of claims 1-8, the guide wheels being adapted to engage with the sides of the rail; the guide wheel is installed on the guide frame through the guide wheel installation seat.
10. A rail vehicle adapted to run on a rail, characterized in that it comprises a guide device according to claim 9, the guide wheels of which are adapted to cooperate with the sides of the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591498.9A CN113830126B (en) | 2020-06-24 | 2020-06-24 | Guide wheel mounting seat, guide device with same and rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010591498.9A CN113830126B (en) | 2020-06-24 | 2020-06-24 | Guide wheel mounting seat, guide device with same and rail vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN113830126A CN113830126A (en) | 2021-12-24 |
| CN113830126B true CN113830126B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010591498.9A Active CN113830126B (en) | 2020-06-24 | 2020-06-24 | Guide wheel mounting seat, guide device with same and rail vehicle |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101364703B1 (en) * | 2012-02-29 | 2014-02-20 | 주식회사 우진산전 | Shock absorbing apparatus for guide wheel of light electric motor car |
| CN207045346U (en) * | 2017-06-19 | 2018-02-27 | 株洲中车特种装备科技有限公司 | A kind of single track excursion train bogie guider |
| CN208665210U (en) * | 2018-08-24 | 2019-03-29 | 福建铁工机智能机器人有限公司 | A kind of automatically walk track detector based on machine vision |
| CN209757114U (en) * | 2019-02-25 | 2019-12-10 | 比亚迪股份有限公司 | Guide wheel pretightening force adjusting device, bogie and railway vehicle with same |
| CN210122116U (en) * | 2019-05-29 | 2020-03-03 | 中国铁建重工集团股份有限公司 | Bogie and monorail operation vehicle |
| CN210126522U (en) * | 2019-07-09 | 2020-03-06 | 严镇 | High-speed railway high platform safety device |
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2020
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