CN111114337A

CN111114337A - Steering device and magnetic levitation vehicle

Info

Publication number: CN111114337A
Application number: CN201811296692.3A
Authority: CN
Inventors: 宫在飞; 胡文浩; 李余江; 李良杰; 张硕; 刘雁翔; 王波
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2020-05-08
Anticipated expiration: 2038-11-01
Also published as: CN111114337B; WO2020087596A1

Abstract

The embodiment of the application provides a turn to device and magnetic levitation vehicle, wherein, turn to the device and be arranged in connecting between automobile body and the suspension among the magnetic levitation vehicle, should turn to the device and include: the T-shaped arm assembly and the steering push rod are connected between the T-shaped arm assembly and the suspension frame; the T-arm assembly includes: the vehicle body connecting piece is used for connecting with the vehicle body; the first connecting arm is rotatably connected with the vehicle body connecting piece; a second connecting arm; one end of the second connecting arm is rotatably connected with the vehicle body connecting piece; the other end of the second connecting arm is provided with two connecting plates, and a gap for accommodating the first end of the steering push rod is formed between the two connecting plates, so that the two connecting plates are respectively connected with the steering push rod from two sides of the first end of the steering push rod. The steering device provided by the embodiment of the application has a long service life.

Description

Steering device and magnetic levitation vehicle

Technical Field

The application relates to the technology of magnetic levitation vehicles, in particular to a steering device and a magnetic levitation vehicle.

Background

The magnetic suspension vehicle mainly comprises a vehicle body, a suspension frame and a steering device, wherein the steering device is arranged between the vehicle body and the suspension frame and used for transmitting transverse force between the vehicle body and the suspension frame to realize the steering function of the vehicle. The bottom of the vehicle body is provided with a plurality of suspension frames, and each two suspension frames are provided with a set of steering devices.

Fig. 1 is a schematic structural view of a steering apparatus connected to a suspension in the related art. As shown in fig. 1, the two suspension frames 11 are sequentially arranged along the traveling direction of the vehicle body, and the two suspension frames 11 are rotatably connected with each other. Be provided with one set of device that turns to between two suspension 11, turn to the device and include: a long T-arm assembly 12, a short T-arm assembly 13, a push rod 14 and a wire rope 15. Wherein, long T-shaped arm component 12 and short T-shaped arm component 13 are respectively positioned at two ends of the steering device and are connected with each other through a steel wire rope 15. The long and short T-

arm assemblies

12 and 13 are each connected to the suspension 11 by a pushrod 14.

Fig. 2 is a schematic structural view of a steering apparatus in the related art. As shown in fig. 2, the long T-arm assembly 12 includes: a transverse arm 121, a longitudinal arm 122, a connecting shaft (not shown in fig. 2), a connecting sleeve 123 and a vehicle body fixing member 124. Wherein, the top of automobile body mounting 124 links to each other with the automobile body, and the bottom is with connecting axle welded fastening. The connecting sleeve 123 is sleeved outside the connecting shaft and can rotate relative to the connecting shaft. The middle part of the transverse arm 121 is welded with a connecting sleeve 123, and the two ends of the transverse arm 121 are respectively connected with the transverse arms in the short T-shaped arm assembly 13 through steel cables 15. One end of the longitudinal arm 122 is welded with the connecting sleeve 123, and the other end of the longitudinal arm 122 is rotatably connected with the long lower sliding table 16 through the push rod 14. The long lower sliding platform 16 is arranged on the suspension frame 11, and the top of the long lower sliding platform is connected with the vehicle body. The short T-arm assembly 13 is similar in construction to the long T-arm assembly 12, except that the longitudinal arm 122 is shorter. The longitudinal arm 122 of the short T-arm assembly 13 is connected to the short lower slide 17 by means of the push rod 14, the short lower slide 17 being arranged on the suspension 11, the top of which is connected to the vehicle body.

Fig. 3 is an enlarged view of the area a in fig. 2. As shown in fig. 3, in the related art, two coupling lugs 1221 are symmetrically provided at the other end of the longitudinal arm 122, and one coupling lug 1221 is used to couple with one push rod 14. Specifically, each engaging lug 1221 is provided with a pin hole. Correspondingly, a pin hole is also arranged at the end part of the push rod 14, and the connecting pin 18 sequentially passes through the pin hole on the push rod 14 and the pin hole on the longitudinal arm 122 to connect the longitudinal arm 122 and the push rod 14 together, so that the longitudinal arm 122 and the push rod 14 can rotate relatively. However, in the actual use process, the connecting pin 18 is under the pulling force of the push rod 14, and the axis thereof forms a certain angle with the center line of the pin hole, so that the stress near the pin hole of the longitudinal arm 122 is relatively large, the connecting lug 1221 is easily broken, the connection between the longitudinal arm 122 and the push rod 14 is further broken, and the service life of the steering device is shortened.

Disclosure of Invention

The embodiment of the application provides a steering device and a magnetic levitation vehicle, and the steering device and the magnetic levitation vehicle have long service life.

An embodiment of a first aspect of the present application provides a steering device for connection between a vehicle body and a suspension in a magnetic levitation vehicle, the steering device comprising: the T-shaped arm assembly and the steering push rod are connected between the T-shaped arm assembly and the suspension frame;

the T-arm assembly includes:

the vehicle body connecting piece is used for connecting with the vehicle body;

the first connecting arm is rotatably connected with the vehicle body connecting piece;

a second connecting arm; one end of the second connecting arm is rotatably connected with the vehicle body connecting piece; the other end of the second connecting arm is provided with two connecting plates, and a gap for accommodating the first end of the steering push rod is formed between the two connecting plates, so that the two connecting plates are respectively connected with the steering push rod from two sides of the first end of the steering push rod.

An embodiment of a second aspect of the present application provides a magnetic levitation vehicle, including: a vehicle body, a suspension, and a steering apparatus as described above.

The technical scheme that this application embodiment provided, the tip through the second linking arm in T shape arm subassembly sets up two connecting plates, steering rod's first end can insert in the space between two connecting plates, so that two connecting plates link to each other with it from steering rod's both sides respectively, make steering rod pass through the effort that the connecting pin transmits for first connecting arm can evenly distributed on two connecting plates, avoided appearing as the problem that longitudinal arm stress point is comparatively concentrated and easy to break among the correlation technique, T shape arm subassembly's life has been prolonged, the reliability of the device that turns to has also been improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of a steering apparatus connected to a suspension frame in the related art;

FIG. 2 is a schematic view showing a structure of a steering apparatus according to the related art;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic structural diagram of a T-arm assembly of a steering apparatus according to an embodiment of the present disclosure;

FIG. 5 is a top view of the T-arm assembly shown in FIG. 4;

FIG. 6 is a schematic view of section B-B of FIG. 5;

FIG. 7 is a schematic view of a T-arm assembly coupled to a steering pushrod according to an embodiment of the present disclosure;

FIG. 8 is an enlarged view of area C of FIG. 7;

FIG. 9 is a schematic view illustrating the forces applied to the push rod and the connecting pin in the related art;

fig. 10 is a partial schematic view of a steering apparatus according to a third embodiment of the present application;

fig. 11 is a schematic structural view of a lower sliding table provided in the third embodiment of the present application;

FIG. 12 is a schematic partial structural view of an air spring according to a third embodiment of the present application;

fig. 13 is a schematic structural diagram of a gasket provided in the third embodiment of the present application;

FIG. 14 is a partial schematic structural view of a washer disposed on an air spring according to a third embodiment of the present application;

FIG. 15 is a schematic view showing a structure of a push rod according to the related art;

fig. 16 is a schematic structural view of a steering push rod according to a fourth embodiment of the present application;

FIG. 17 is a partial cross-sectional view of a steering pushrod and T-arm assembly according to a fourth embodiment of the present application assembled;

FIG. 18 is an enlarged view of region G of FIG. 10;

fig. 19 is an enlarged view of the region H in fig. 10.

Reference numerals:

11-a suspension frame; 12-a long T-arm assembly; 121-a transverse arm; 122-longitudinal arm; 1221-engaging lugs; 123-connecting sleeve; 124-vehicle body mount; 13-short T-arm assembly; 14-a push rod; 141-assembly pin holes; 15-steel wire rope; 16-long lower slipway; 17-short lower slipway; 18-a connecting pin;

2-a vehicle body attachment; 21-a fixing member; 22-a rotating shaft; 23-a sleeve; 24-a sheath;

3-a first connecting arm; 31-a first lightening slot;

4-a second linking arm; 41-connecting plate; 42-connecting the vertical plate; 43-a second weight-reduction slot;

5-a steering push rod; 51-pushrod attachment hole; 52-spherical hinge bearing; 53-the main rod body; 54-first connecting rod; 55-a second connecting rod;

6-a lower sliding table; 61-a base; 62-air spring; 621-a dust cover; 622 — first bolt; 623-a second bolt; 624-a mounting surface; 63-additional air chambers; 64-a lower cover plate; 641-a second connecting portion; 65-a middle plate; 651 — first connecting portion; 66-upper cover plate; 67-a bushing; 68-first rib plate; 69-second rib plate;

7-connecting ropes;

8-a gasket; 81-protection boss; 82-notch; 83-gap.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

The embodiment provides a steering device which is used for being connected between a vehicle body and a suspension frame in a magnetic levitation vehicle and transmitting transverse force between the suspension frame and the vehicle body in the turning process of the vehicle. The steering device that this embodiment provided can set up on two adjacent suspensions, and this steering device includes: t-arm assembly, steering push rod and connecting rope. The number of the T-shaped arm assemblies is two, and the T-shaped arm assemblies are respectively positioned at two ends of the two suspension frames. The two T-shaped arm assemblies are connected through a connecting rope. The first end of the steering push rod is connected with the T-shaped arm assembly, the second end of the steering push rod is connected with the suspension frame, and the transverse force generated by the suspension frame is transmitted to the T-shaped arm assembly through the steering push rod and then transmitted to the vehicle body.

The two T-arm assemblies may be of identical construction. Alternatively, the two T-arm assemblies have only one difference, which is the same as the difference in the related art, namely: the longitudinal arms 122 in the related art are different in length. Since the technical solution provided by the present embodiment is independent of the length of the longitudinal arm 122, only one of the T-arm assemblies is taken as an example to illustrate the implementation thereof.

Fig. 4 is a schematic structural view of a T-arm assembly in a steering apparatus according to an embodiment of the present invention, fig. 5 is a top view of the T-arm assembly shown in fig. 4, fig. 6 is a schematic sectional view taken along a line a-a in fig. 5, fig. 7 is a schematic structural view of the T-arm assembly connected to a steering pushrod according to an embodiment of the present invention, and fig. 8 is an enlarged view of a region C in fig. 7. As shown in fig. 4 to 8, the T-arm assembly includes: a body link 2, a first link arm 3 and a second link 4.

Wherein the vehicle body connecting piece 2 is used for connecting with a vehicle body. Specifically, the top of the vehicle body attachment 2 is attached to the vehicle body, and may be fixed by bolting, for example.

The first link arm 3 is rotatably connected to the vehicle body attachment 2. The extending direction of the first connecting arm 3 is a first direction, the middle part of the first connecting arm 3 is rotatably connected with the vehicle body connecting piece 2, and two ends of the first connecting arm 3 are respectively connected with two ends of the first connecting arm 3 in the other T-shaped arm component through the connecting rope 7, so that the two first connecting arms 3 and the connecting rope 7 form a parallelogram structure. The connecting rope 7 can be implemented by referring to the steel wire rope 15 in the related art.

The extending direction of the second connecting arm 4 is a second direction, which may be perpendicular to the first direction. One end of the second connecting arm 4 is rotatably connected to the vehicle body attachment 2. The other end of the second connecting arm 4 is pivotally connected to the steering push rod 5, and in particular, the end portion is provided with two connecting plates 41, and a gap for accommodating the first end of the steering push rod 5 is formed between the two connecting plates 41. During assembly, the first end of the steering push rod 5 is inserted into the gap so that the two connecting plates 41 are connected to the steering push rod 5 from both sides of the first end of the steering push rod 5, respectively.

In the related art shown in the background of the present application, the force near the pin hole of the longitudinal arm 122 is relatively large. Fig. 9 is a schematic diagram of the force applied to the push rod and the connecting pin in the related art, and in order to clearly illustrate the force applied, the inclination angles of the connecting pin 18 and the push rod 14 are exaggerated in fig. 9, and in actual fact, the inclination angles are smaller than those shown in fig. 7. As shown in fig. 9, when the connecting pin 18 is inserted into the pin hole of the push rod 14 and the pin hole of the longitudinal arm 122 in this order, and the push rod 14 is positioned above the longitudinal arm 122, the push rod 14 exerts a restraining force on the upper side of the connecting pin 18, and the longitudinal arm 122 exerts a restraining force on the lower side of the connecting pin 18. During operation of the vehicle, the longitudinal arm 122, when tilted at an angle to the horizontal, brings the connecting pin 18 together to rotate away from the vertical. In this state, when the push rod 14 moves rightward, the push rod 14, the connecting pin 18, and the longitudinal arm 122 form a lever structure: the push rod 14 exerts a pulling force on the connecting pin 18 to the right, which is concentrated on the area D in fig. 9. In region E, the push rod 14 contacts the longitudinal arm 122 as a fulcrum for the lever. The force exerted by the connecting pin 18 on the longitudinal arm 122 is concentrated in the region F, making this region more susceptible to breakage, resulting in failure of the connection between the longitudinal arm 122 and the connecting pin 18, and thus in disconnection of the connection between the longitudinal arm 122 and the push rod 14.

In the present embodiment, two connecting plates 41 are provided at the end of the second connecting arm 4, and the first end of the steering push rod 5 is inserted into the gap between the two connecting plates 41, so that the two connecting plates 41 are connected to the steering push rod 5 from both sides of the first end of the steering push rod 5, respectively. For example: the two connecting plates 41 are respectively provided with a pin shaft hole, the first end of the steering push rod 5 is also provided with a pin shaft hole, and a connecting pin sequentially penetrates through the pin shaft hole of one connecting plate 41, the pin shaft hole of the steering push rod 5 and the pin shaft hole of the other connecting plate 41 to be connected. The two connecting plates 41 respectively restrain the connecting pins on the upper and lower sides of the steering push rod 5 so that the connecting pins can be kept vertical, and the acting force of the connecting pins on the second connecting arm 4 is uniformly distributed on the two connecting plates 41.

The connecting pin 18 may be of the same structure as that of the related art, or may be of a different structure so as to be able to connect the connecting plate 41 and the steering push rod 5.

The above-described solution using the connecting pin 18 for connection is only an example, and a person skilled in the art may also use other ways to connect the steering push rod 5 and the connecting plate 41, such as: a pin shaft is arranged between the two connecting plates 41, a locking ring capable of being opened and closed is arranged at the first end of the steering push rod 5, when the locking ring is opened, the locking ring is clamped on the pin shaft, then the locking ring is closed, so that the locking ring cannot be separated from the pin shaft, and the steering push rod 5 can be rotatably connected with the connecting plates 41.

The technical scheme that this embodiment provided, tip through the second linking arm in T shape arm subassembly sets up two connecting plates, steering rod's first end can insert in the space between two connecting plates, so that two connecting plates link to each other with it from steering rod's both sides respectively, make steering rod pass through the effort that the connecting pin transmits for first connecting arm can evenly distributed on two connecting plates, avoided appearing as the problem that longitudinal arm stress point is comparatively concentrated and easy fracture among the correlation technique, the life of T shape arm subassembly has been prolonged, the reliability of steering device has also been improved.

Example two

The embodiment is based on the above embodiment, and optimizes the steering device, especially further optimizes the implementation mode of the T-shaped arm assembly.

The two connecting plates 41 are parallel to each other, pin shaft holes with coincident axes are correspondingly formed in the two connecting plates 41, and the connecting pins 18 can be sequentially inserted into the pin shaft holes of the two connecting plates 41 in the vertical direction.

As shown in fig. 7 and 8, each connecting plate 41 is provided with two pin shaft holes, which are sequentially arranged in a first direction, which is an extending direction of the first connecting arm 3. The two pin shaft holes are respectively used for connecting with two steering push rods 5.

Further, as shown in fig. 8, connecting risers 42 are provided between the connecting plates 41. The connecting vertical plate 42 is perpendicular to the connecting plate 41 and can be used for supporting and fixing the two connecting plates 41. Two pin shaft holes on the same connecting plate 41 are distributed on both sides of the connecting vertical plate 42.

The second connecting arm 4 can be manufactured by a casting process, so that the second connecting arm has high strength.

In the related art, as shown in fig. 2 and 3, in order to reduce the weight of the steering apparatus and thus the vehicle weight, lightening holes are usually formed in the lateral arm 121 and the longitudinal arm 122. However, if the lightening holes are too dense, the fatigue strength of the transverse arm 121 and the longitudinal arm 122 is low, and the stress at the joint between the lightening holes is concentrated, which in turn causes the transverse arm 121 and the longitudinal arm 122 to be easily broken.

To solve this problem, the present embodiment optimizes the first connecting arm 3 and the second connecting arm 4:

as shown in fig. 4 to 6, a first lightening groove 31 is provided in the first connecting arm 3, and the depth of the first lightening groove 31 is smaller than the thickness of the first connecting arm 3. The opening of the first lightening slot 31 is large in size, extends from the middle part to the two ends of the first connecting arm 3, and covers the areas of a plurality of lightening holes in the related art, so that the lightening effect can be achieved, and the problem that stress is concentrated at the connecting part between the lightening holes in the related art is solved.

Specifically, the first lightening groove 31 may be provided on the upper surface or the lower surface of the first connecting arm 3. Alternatively, the first weight-reducing grooves 31 may be formed on both the upper surface and the lower surface, and the first weight-reducing grooves 31 of the upper surface and the first weight-reducing grooves 31 of the lower surface may be symmetrically formed, and the intermediate thickness may be 10 mm.

Taking the structure shown in fig. 5 as an example, the upper surface of the first connecting arm 3 is provided with two first lightening grooves 31 distributed on the left and right parts of the first connecting arm 3 and extending from the middle to the two ends. The size of the first lightening slot 31 may be set according to the size of the first connecting arm 3 to ensure that the fatigue strength of the first connecting arm 3 is satisfactory.

The middle part of the first connecting arm 3 is rotatably connected with the vehicle body connecting piece 2, and the circular arc radian of the middle part of the first connecting arm 3 can be increased so as to reduce the stress of the region and improve the strength.

A second weight-reducing groove 43 is provided in the second connecting arm 4, and the depth of the second weight-reducing groove 43 is smaller than the thickness of the second connecting arm 4. The number of the second lightening slots 43 is one, the opening size of the second lightening slots is large, the second lightening slots extend from the middle to two ends of the second connecting arm 4, and the areas of a plurality of lightening holes in the related art are covered, so that the lightening effect can be achieved, and the problem that stress is concentrated at the connecting parts between the lightening holes in the related art is solved.

Specifically, the second lightening groove 43 may be provided on either one side surface or the opposite other side surface of the second connecting arm 4. Or the surfaces of both sides are provided with second weight-reducing grooves 43, and the middle thickness is 10 mm.

Taking the structure shown in fig. 6 as an example, the left and right side surfaces of the second connecting arm 4 are each provided with a second lightening groove 43, and the two second lightening grooves 43 are symmetrically arranged. The second lightening slot 43 can be dimensioned according to the dimensions of the second connecting arm 4 in order to ensure that the fatigue strength of the second connecting arm 4 is as desired.

The embodiment further provides a specific implementation manner of the vehicle body connecting piece 2:

as shown in fig. 4, 6 and 7, the vehicle body attachment includes: a fixing member 21, a rotating shaft 22 and a sleeve 23. Wherein, one end of the fixing member 21 is connected with the vehicle body, for example, by a bolt; the other end of the fixing member 21 is connected to the rotation shaft 22, for example, by welding. The sleeve 23 is sleeved on the outer side of the rotating shaft 22 and is rotatably connected with the rotating shaft 22. The fixing member 21 can be realized by referring to the vehicle body fixing member 124 in fig. 2, the rotating shaft 22 can be realized by referring to a connecting shaft in the related art, and the sleeve 23 can be realized by referring to the connecting sleeve 123 in fig. 2.

The first connecting arm 3 and the second connecting arm 4 are respectively provided with a connecting hole, are sleeved outside the sleeve 23 through the connecting holes, and are fixed with the outer peripheral surface of the sleeve 23 in a welding mode.

On the basis of the above technical solution, the present embodiment improves the vehicle body connecting member 2:

increasing the outer diameter of the sleeve 23, for example: the outer diameter of the coupling sleeve 123 in the related art is 100mm, and the present embodiment increases the outer diameter of the sleeve 23 to 120 mm. The aperture of the connecting hole on the first connecting arm 3 and the second connecting arm 4 is correspondingly increased to increase the length of the weld joint between the sleeve 23 and the first connecting arm 3 and the second connecting arm 4, so that the stress area is increased, the stress is dispersed, and the disconnection of the weld joint due to the stress concentration at the weld joint is avoided.

Further, as shown in fig. 6, a sheath 24 may be further disposed on the outer circumferential surface of the sleeve 23, and the sheath 24 may be disposed adjacent to the first connecting arm 3. All weld between first linking arm 3 and sleeve 23, between first linking arm 3 and sheath 24, and between sheath 24 and sleeve 23, increased welding area, improve the firm degree of welding on the one hand, on the other hand can also disperse stress, avoids leading to welding seam department disconnection because of welding seam department stress concentration.

Sheath 24 also can be adjacent with second linking arm 4 and set up, all welds between second linking arm 4 and sleeve 23, between second linking arm 4 and sheath 24 and between sheath 24 and sleeve 23, has increased welding area, improves the firm degree of welding on the one hand, and on the other hand can also disperse stress, avoids leading to the disconnection of welding seam department because of welding seam department stress concentration.

Two sheaths 24 are shown in figure 6, adjacent to the first and second connecting

arms

3 and 4 respectively.

EXAMPLE III

The present embodiment is based on the above embodiments, and optimizes the steering device.

Fig. 10 is a partial schematic view of a steering device according to a third embodiment of the present application. As shown in fig. 10, the steering device further includes: and the lower sliding table 6 is rotatably connected between the suspension frame and the steering push rod 5 and is used for transmitting transverse force between the suspension frame and the steering push rod.

Fig. 11 is a schematic structural view of a lower sliding table provided in the third embodiment of the present application. As shown in fig. 11, the lower slide table 6 provided in the present embodiment includes: a base 61, an air spring 62, an additional air chamber 63, a lower cover plate 64, an intermediate plate 65 and an upper cover plate 66.

Wherein, base 61 is used for linking to each other with the suspension, sets up the mounting groove at the tip of suspension, and base 61 sets up in this mounting groove. The base 61 may be of a construction commonly used in the art.

An air spring 62 is disposed on top of the base 61 and may be fixedly attached by bolts. The air spring 62 may be of a construction commonly used in the art.

An additional air chamber 63 is provided on top of the air spring 62 and may be fixedly attached by bolts. The additional air chamber 63 has a certain amount of elasticity, which can supplement the amount of elasticity of the air spring 62. The additional air chamber 63 may also be constructed as is conventional in the art.

The lower cover plate 64 and the intermediate plate 65 are each connected to the outer peripheral surface of the additional air chamber 63, and may be fixedly connected thereto by welding, for example. The lower cover plate 64 and/or the intermediate plate 65 is connected to the second end of the steering push rod 5 to transmit lateral forces.

An upper cover plate 66 is fixedly connected to the top of the additional air chamber 63, and the upper cover plate 66 is also used for being connected to the vehicle body through bolts.

In the present embodiment, the intermediate plate 65 and the lower cover plate 64 each have an arc-shaped welding surface as shown in fig. 11, and are welded to the outer peripheral surface of the additional air chamber 63 on both the upper and lower sides of the welding surface. The end of the middle plate 65 extends outward along the radial direction of the air spring 62 to form a first connecting portion 651, the end of the lower cover plate 64 extends outward along the same direction to form a second connecting portion 641, a gap capable of accommodating the second end of the steering push rod 5 is formed between the first connecting portion 651 and the second connecting portion 641, the second end of the steering push rod 5 can be inserted into the gap, and the first connecting portion 651 and the second connecting portion 641 are connected with the steering push rod 5 from two sides.

Specifically, the first connecting portion 651 and the second connecting portion 641 are respectively provided with a connecting hole having an overlapped axis, and a bushing 67 is provided in the connecting hole. Correspondingly, a connecting hole is formed at the second end of the steering push rod 5, and a connecting pin is used to sequentially penetrate through the bushings 67 of the connecting holes of the first connecting portion 651, the steering push rod 5 and the second connecting portion 641 for connection. The first connecting portion 651 and the second connecting portion 641 are used for restraining the connecting pins from the upper side and the lower side respectively, the steering push rod 5 is used for restraining the connecting pins from the middle, the connecting pins can be guaranteed to be vertical all the time, and acting force applied to the connecting pins by the steering push rod 5 can be uniformly distributed on the first connecting portion 651 and the second connecting portion 641, so that the connecting strength is improved, and the reliability of the steering device is improved.

Furthermore, a rib plate (called as a first rib plate 68) is connected between the lower cover plate 64 and the additional air chamber 63, and the first rib plate 68 is respectively connected with the lower cover plate 64 and the additional air chamber 63 in a welding mode, so that the connection strength between the lower cover plate 64 and the additional air chamber 63 can be improved.

A rib plate (called as a second rib plate 69) is connected between the middle plate 65 and the additional air chamber 63, and the second rib plate 69 is respectively connected with the middle plate 65 and the additional air chamber 63 in a welding mode, so that the connection strength between the middle plate 65 and the additional air chamber 63 can be improved.

Fig. 12 is a partial structural schematic view of an air spring according to a third embodiment of the present application. As shown in fig. 12, based on the above technical solution, the air spring 62 may specifically include: the structure of the hollow spring body (not shown in the figures) and the dust cover 621 sleeved outside the hollow spring body can refer to the prior art. The top end of the dust cover 621 is connected to the lower cover plate 64 by the first bolt 622, and the bottom end of the dust cover 621 is connected to the base 61 by the second bolt 623.

Since the air spring 62 expands and contracts in the axial direction, when the air spring 62 contracts, the dust cover 621 can be folded to contact with the first bolt 622 and the second bolt 623, and the first bolt 622 and the second bolt 623 press the dust cover 621 to deform the dust cover, even to puncture the dust cover, so that the air spring 62 fails.

Fig. 13 is a schematic structural view of a washer provided in the third embodiment of the present application, and fig. 14 is a schematic partial structural view of an air spring in which the washer provided in the third embodiment of the present application is disposed. As shown in fig. 13 and 14, the washer 8 is employed in the present embodiment, and a surface (such as the fitting surface 624 in fig. 12) for fitting with the first bolt 622 or the second bolt 623 is provided in the dust cover 621 in the circumferential direction. The washer 8 is provided with a protection boss 81 at a position corresponding to the first bolt 622 or the second bolt 623. After the first bolt 622 or the second bolt 623 is assembled with the dust cover 621, the top surface of the protection boss 81 is higher than the top end of the first bolt 622 or the second bolt 623 (for example, by 0.5mm), or the top surface of the protection boss 81 is flush with the top end of the first bolt 622 or the second bolt 623. When the air spring 62 contracts, the dust cover 621 is folded into contact with the protection boss 81 without being in direct contact with the first bolt 622 or the second bolt 623. Since the area of the top surface of the protection boss 81 is larger than the area of the head of the first bolt 622 or the second bolt 623, although the protection boss 81 also presses the dust cover 621, the contact area is large and the pressure is small, so that the problem that the dust cover 621 is punctured does not occur. Further, the gasket 8 can be made of elastic materials such as rubber, and has a certain buffering capacity, so that the problem of puncturing the dust cover 621 can be further avoided.

The number and arrangement of the shielding bosses 81 may be set according to a preset position for assembling the first bolt 622 or the second bolt 623.

The construction of the gasket 8 can be realized in various ways. In this embodiment, a notch 82 is formed on one side of the protection boss 81, and the notch 82 is used for accommodating the first bolt 622 or the second bolt 623. For example: the open end of the notch 82 is directed towards the centre of the gasket 8, i.e.: located inside the gasket 8. The washer 8 is mounted radially inwardly onto the dust cover 621 with the notch 82 captured outside of the first bolt 622 or the second bolt 623. The notch 82 is a "C" shaped notch with a smaller opening width.

Further, in order to facilitate the assembly of the gasket 8, a gap 83 may be formed in the gasket 8, and the gap 83 is located between any two adjacent protection bosses 81. The gasket 8 is broken at the notch 83, and in the process of assembling the gasket 8, the gasket 8 is broken so that the opening thereof is larger than the outer diameter of the dust cover 621, and then the gasket 8 is fitted over the dust cover 621 and assembled on the assembly surface 624.

In addition to the provision of the notch 82 on the protection boss 81, a through hole through which the first bolt 622 or the second bolt 623 passes may be provided on the protection boss 81 instead of the notch 82.

Alternatively, a blind hole may be formed in the bottom surface of the protection boss 81 so that the protection boss 81 can be covered above the first bolt 622 or the second bolt 623 from one end of the bolt head.

Alternatively, a plurality of protection bosses 81 are provided on the washer 8 at a height higher than the first bolt 622 or the second bolt 623. The plurality of protection bosses 81 are distributed between the first bolts 622 or between the second bolts 623, and in the folding process of the dust cover 621, the protection bosses 81 firstly contact with the dust cover 621 and support the dust cover 621, so that the contact between the bolts and the dust cover 621 is reduced, and the effect of protecting the dust cover 621 from being punctured can be achieved.

In view of the correspondence between the long lower sliding table and the short lower sliding table in the related art, in the steering device provided in the present embodiment, both the long lower sliding table and the short lower sliding table can be implemented by adopting the above-mentioned scheme, but the specific structure and size of the steering device can be appropriately adjusted according to the needs of the steering device.

Example four

The embodiment is based on the above embodiments, and optimizes the steering device, especially further optimizes the implementation manner of the steering push rod.

As shown in fig. 2, 3 and 15, in the related art, the two ends of the push rod 14 are provided with the fitting pin holes 141, which are respectively connected with the corresponding lower slide table and the T-shaped arm assembly through the connecting pins 18, so that the push rod 14 can only rotate in the horizontal plane relative to the lower slide table and the T-shaped arm assembly. And a bushing is arranged in the assembling pin hole 141, so that the flexible connection and the vibration impact buffering effect are achieved.

However, during the actual operation of the vehicle, the heights of the T-arm assembly and the lower slide are not consistent in the vertical direction, and a high-low situation often occurs, in which a vertical force is applied to the push rod 14, so that the push rod 14 is bent and deformed.

In view of the above problems, the present embodiment improves the implementation manner of the push rod:

fig. 16 is a schematic structural view of a steering push rod according to a fourth embodiment of the present invention, and fig. 17 is a partial sectional view of an assembly of the steering push rod and a T-arm assembly according to the fourth embodiment of the present invention. As shown in fig. 16 and 17, the steering push rod 5 employed in the present embodiment is provided at one end with a push rod attachment hole 51 for attachment to the lower slide table 6 via an attachment pin and attachment to the suspension via the lower slide table 6. The other end of the steering push rod 5 is provided with a spherical hinge mounting hole, and a spherical hinge bearing 52 is arranged in the spherical hinge mounting hole. The spherical hinge bearing 52 includes: the ball bearing comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, wherein the outer ring is in interference fit with a spherical hinge mounting hole, and a connecting pin 18 is inserted into the inner ring. The inner ring of the spherical hinge bearing can rotate relative to the outer ring at multiple angles, the degree of freedom of the steering push rod 5 in the vertical direction can be improved, and when the vertical height of the second connecting arm 4 and the vertical height of the lower sliding table 6 are inconsistent, the steering push rod 5 can adjust the angle of the steering push rod 5 in an adaptive mode, and the bending deformation is avoided.

Fig. 18 is an enlarged view of a region G in fig. 10, fig. 19 is an enlarged view of a region H in fig. 10, and fig. 18 and 19 show the structure in which two steering pushrods 5 on both sides of the T-shaped arm assembly are connected to the corresponding lower slide table 6, respectively. As shown in fig. 17 to 19, the steering push rod 5 is further modified: the steering push rod 5 includes: a main rod body 53, a first connecting rod 54 and a second connecting rod 55. Wherein, both ends of the main rod body 53 are provided with external threads.

One end of the first connecting rod 54 is provided with an internally threaded hole for connection with one end of the main rod body 53. The other end of the first connecting rod 54 is provided with the above-mentioned push rod connecting hole 51 for connecting with the lower stage 6 by a connecting pin.

One end of the second connecting rod 55 is provided with an internal threaded hole for connecting with the other end of the main rod body 53. The other end of the second connecting rod 55 is provided with the above-mentioned ball hinge mounting hole.

In the process of assembling the steering push rod 5, the main rod body 53 is rotated, and the thread length of the main rod body, which is matched with the first connecting rod 54 and the second connecting rod 55, is adjusted, so that the whole length of the steering push rod 5 is variable, the horizontal distance between the lower sliding table and the T-shaped arm assembly can be adapted, and the assembling flexibility is improved.

As shown in fig. 8, alternatively, the other end of the second connecting rod 55 may be provided with the above-mentioned push rod connecting hole 51 to be connected to the T-arm assembly by a connecting pin, so that the effect of adjusting the overall length of the steering push rod 5 can be achieved.

EXAMPLE five

The present embodiment provides a magnetic levitation vehicle comprising: a vehicle body, a suspension, and a steering apparatus as provided in any of the embodiments above.

The maglev vehicle that this embodiment provided, adopt above-mentioned steering device, the tip through the second linking arm in T shape arm subassembly sets up two connecting plates, the first end of steering push rod can insert in the space between two connecting plates, so that two connecting plates link to each other with it from steering push rod's both sides respectively, make steering push rod pass through the effort that the connecting pin transmits for first connecting arm can evenly distributed on two connecting plates, avoided if the problem that longitudinal arm stress point is comparatively concentrated and easy rupture appears among the correlation technique, the life of T shape arm subassembly has been prolonged, the reliability that has also improved steering device.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or 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 in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A steering device for connection between a vehicle body and a suspension in a magnetic levitation vehicle, the steering device comprising: the T-shaped arm assembly and the steering push rod are connected between the T-shaped arm assembly and the suspension frame;

the T-arm assembly includes:

the vehicle body connecting piece is used for connecting with the vehicle body;

2. Steering device according to claim 1, wherein the two connection plates are parallel; two connecting plates are correspondingly provided with pin shaft holes with coincident axes.

3. The steering device according to claim 1 or 2, wherein each connecting plate is provided with two pin shaft holes, and the two pin shaft holes on the same connecting plate are sequentially arranged along a first direction and are respectively used for being connected with two steering push rods; the first direction is parallel to the extending direction of the first connecting arm.

4. The steering device according to claim 3, wherein a connecting riser is provided between the two connecting plates, the connecting riser is perpendicular to the connecting plates, and the two pin shaft holes are distributed on both sides of the connecting riser.

5. The steering apparatus as claimed in claim 1, wherein the first link arm is provided with a first lightening groove extending from a middle portion to an end portion of the first link arm.

6. The steering apparatus as claimed in claim 1, wherein said second link arm is provided with a second lightening slot extending from a middle of said second link arm to both ends.

7. The steering device according to claim 6, wherein the number of the second weight-reducing grooves is two, and the two weight-reducing grooves are symmetrically distributed on two opposite surfaces of the second connecting arm.

8. The steering device according to claim 1, wherein the vehicle body attachment member includes:

a fixing member; one end of the fixing piece is fixedly connected with the vehicle body;

the rotating shaft is fixedly connected with the other end of the fixing piece;

the sleeve is sleeved on the outer side of the rotating shaft and is rotationally connected with the rotating shaft; the outer wall of the sleeve is fixedly connected with the first connecting arm and the second connecting arm respectively.

9. The steering apparatus according to claim 8, wherein the vehicle body attachment member further comprises:

and the sheath is sleeved on the peripheral surface of the sleeve and is respectively welded with the first connecting arm and the sleeve and/or respectively welded with the second connecting arm and the sleeve.

10. The steering device according to claim 1, further comprising: the lower sliding table is used for being rotatably connected between the suspension frame and the steering push rod.

11. The steering device according to claim 10, wherein the lower slide table includes:

the base is used for being connected with the suspension frame;

the air spring is arranged at the top of the base;

the additional air chamber is arranged at the top of the air spring;

the lower cover plate is connected with the peripheral surface of the additional air chamber;

and the intermediate plate is connected with the peripheral surface of the additional air chamber.

12. The steering apparatus of claim 11, wherein the end portion of the intermediate plate extends radially outwardly of the air spring to form a first connection; the end part of the lower cover plate extends along the same direction to form a second connecting part;

and a gap for accommodating the second end of the steering push rod is formed between the first connecting part and the second connecting part, so that the first connecting part and the second connecting part are respectively connected with the steering push rod from two sides of the second end of the steering push rod.

13. The steering device according to claim 12, wherein the first connecting portion and the second connecting portion are respectively provided with connecting holes having coincident axes, and a bushing is provided in each connecting hole.

14. The steering device according to claim 11, further comprising:

and the rib plate is connected between the lower cover plate and the additional air chamber or between the middle plate and the additional air chamber.

15. The steering device of claim 11, wherein the air spring comprises:

a hollow spring body;

the dust cover is sleeved outside the hollow spring body; the top end of the dust cover is connected with the lower cover plate through a first bolt, and the bottom end of the dust cover is connected with the base through a second bolt;

the slip table still includes down: a washer provided circumferentially on a surface of the dust cover for fitting with the first bolt or the second bolt; a protection boss is arranged on the gasket at a position corresponding to the first bolt or the second bolt; after the first bolt or the second bolt and the dust cover are assembled, the top surface of the protection boss is higher than the top end of the first bolt or the second bolt, or the top surface of the protection boss is flush with the top end of the first bolt or the second bolt.

16. The steering device as claimed in claim 15, wherein the shielding boss is provided with a notch for receiving the first or second bolt; the open end of the notch faces the center of the gasket.

17. The steering device according to claim 15 or 16, wherein the washer has a gap between adjacent ones of the guard bosses.

18. Steering device according to claim 1,

a second end of the steering push rod is provided with a push rod connecting hole for connecting with the suspension frame;

the first end of the steering push rod is provided with a spherical hinge mounting hole for mounting a spherical hinge bearing, and the inner ring of the spherical hinge bearing is used for inserting a connecting pin.

19. The steering device according to claim 18, wherein the steering pushrod comprises:

a main rod body; external threads are arranged at two ends of the main rod body;

a first connecting rod; one end of the first connecting rod is provided with an internal threaded hole which is used for being connected with one end of the main rod body; the other end of the first connecting rod is provided with the push rod connecting hole;

a second connecting rod; one end of the second connecting rod is provided with an internal threaded hole which is used for being connected with the other end of the main rod body; the other end of the second connecting rod is provided with the spherical hinge mounting hole.

20. A magnetic levitation vehicle, comprising: a vehicle body, a suspension, and a steering apparatus according to any one of claims 1-19.