CN217598677U - Cross beam assembly, frame and vehicle - Google Patents

Abstract

The utility model discloses a beam assembly, frame and vehicle, beam assembly includes: the main body is provided with a cavity which is communicated along the axial direction of the main body; the air storage cavity is suitable for being communicated with at least one of an air brake unit and an air suspension of a vehicle, and provides an air storage function for at least one of the air brake unit and the air suspension; the first connecting plate is connected to one end of the main body and covers one end of the cavity, the second connecting plate is connected to the other end of the main body and covers the other end of the cavity, and the first connecting plate and the second connecting plate are suitable for being connected with a longitudinal beam of a frame. According to the utility model discloses a beam assembly has structural strength height, sealed effectual and advantage such as light in weight.

Description

Crossbeam assembly, frame and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a beam assembly, frame and vehicle are related to.

Background

The cross beam assembly in the related art is provided with the air storage cavity through the structure in the cross beam main body, so as to store air for the air brake unit or the air suspension, but the cross beam assembly in the related art is generally formed by integral casting, so that the overall mass of the cross beam assembly is large, the machining process is complex, the machining process requirement is high, and if the control is not accurate, the casting defect can be caused, and the structural strength is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a beam assembly, which has the advantages of high structural strength, good sealing effect, light weight, etc.

According to the utility model discloses still provide a frame that has above-mentioned crossbeam assembly.

According to the utility model discloses a vehicle that has above-mentioned frame has still been provided.

In order to achieve the above object, according to the present invention, a beam assembly is provided in an embodiment of a first aspect, including: the main body is provided with a cavity which is communicated along the axial direction of the main body; the air storage cavity is suitable for being communicated with at least one of a pneumatic braking unit and an air suspension of a vehicle, and provides an air storage function for the at least one of the pneumatic braking unit and the air suspension; the first connecting plate is connected to one end of the main body and covers one end of the cavity, the second connecting plate is connected to the other end of the main body and covers the other end of the cavity, and the first connecting plate and the second connecting plate are suitable for being connected with a longitudinal beam of a frame.

According to the utility model discloses the crossbeam assembly has structural strength height, sealed effectual and advantage such as light in weight.

According to some embodiments of the invention, the first end plate and the first and second connection plates are spaced apart along an axial direction of the main body; the second end plate is arranged along the axial direction of the main body at intervals with the first connecting plate and the second connecting plate.

According to some embodiments of the invention, the first connecting plate, the first end plate, the second end plate and the second connecting plate are arranged in sequence along the axial direction of the main body; the distance between the first end plate and the first connecting plate is 60-100 mm, and/or the distance between the second end plate and the second connecting plate is 60-100 mm.

According to some embodiments of the invention, the main body is further provided with a first gas port, a second gas port and a third gas port communicating with the gas storage chamber, the first gas port and the second gas port being provided at one of the upper side and the lower side of the main body and being arranged at intervals in the axial direction of the main body, the third gas port being provided at the other of the upper side and the lower side of the main body and being located between the first gas port and the second gas port in the axial direction of the main body; wherein the first, second and third air ports are adapted to be connected to a pneumatic brake unit, an air suspension and an inflation device, respectively.

According to some embodiments of the present invention, the beam assembly further comprises: the fixing ribs are mounted on the outer peripheral surface of the main body and extend along the axial direction of the main body; the fastener is sleeved on the main body and is suitable for fixing the wire harness, the fastener is provided with an anti-rotation bulge, and the anti-rotation bulge is at least abutted to one side of the fixing rib in the circumferential direction of the main body.

According to some embodiments of the present invention, the beam assembly further comprises: at least one left thrust rod support mounted to a left end of the main body; at least one right thrust rod support, which is mounted at the right end of the main body; the left thrust rod support and the right thrust rod support are suitable for being connected with a thrust rod of a drive axle.

According to some embodiments of the present invention, the left thrust rod support is a plurality of and includes a first left thrust rod support and a second left thrust rod support, the first left thrust rod support is installed at the front side of the main body, and the second left thrust rod support is installed at the rear side of the main body; the right thrust bar support is a plurality of and includes first right thrust bar support and second right thrust bar support, first right thrust bar support install in the front side of main part, second right thrust bar support install in the rear side of main part.

According to some embodiments of the invention, the left thrust rod support is connected to a side of the first connecting plate facing the second connecting plate; the right thrust rod support is connected with one side, facing the first connecting plate, of the second connecting plate.

According to the utility model discloses a second aspect embodiment provides a frame, include: a first stringer and a second stringer; according to the utility model discloses a beam assembly of first aspect embodiment, first connecting plate with first longeron is connected, the second connecting plate with the second longeron is connected.

According to the utility model discloses a frame of second aspect embodiment, through utilizing the utility model discloses a beam assembly of first aspect embodiment has advantages such as structural strength is high, sealed effectual and light in weight.

According to the utility model discloses a third aspect embodiment provides a vehicle, includes: a frame according to embodiments of the second aspect of the invention; a pneumatic brake unit mounted to the frame; an air suspension mounted to the frame.

According to the utility model discloses a vehicle of third aspect embodiment, through utilizing according to the utility model discloses a frame of second aspect embodiment has advantages such as structural strength is high, sealed effectual and light in weight.

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

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a beam assembly according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another view angle of the beam assembly according to the embodiment of the present invention.

Fig. 3 is a cross-sectional view of a beam assembly according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a beam assembly according to an embodiment of the present invention.

Fig. 5 is a further schematic structural diagram of a beam assembly according to an embodiment of the present invention.

Reference numerals:

1. a beam assembly;

100. a main body; 110. a cavity; 120. a gas storage cavity; 130. a first gas port; 140. a second gas port; 150. a third air port;

200. a first end plate; 300. a second end plate; 400. a first connecting plate; 500. a second connecting plate;

600. fixing ribs;

700. a left thrust rod support; 710. a first left thrust rod support; 720. a second left thrust rod support;

800. a right thrust rod support; 810. a first right thrust rod support; 820. a second right thrust rod support.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, 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", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more, and "a plurality" means one or more.

A beam assembly 1 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1 to 5, a beam assembly 1 according to an embodiment of the present invention includes a main body 100, a first end plate 200, a second end plate 300, a first connection plate 400, and a second connection plate 500.

The main body 100 is provided with a cavity 110 which penetrates along the axial direction of the main body, the first end plate 200 and the second end plate 300 are installed in the cavity 110 and are arranged at intervals along the axial direction of the main body 100, the first end plate 200 and the second end plate 300 define an air storage cavity 120, the air storage cavity 120 is suitable for being communicated with at least one of an air pressure brake unit and an air suspension of a vehicle and providing an air storage function for at least one of the air pressure brake unit and the air suspension, the first connecting plate 400 is connected to one end of the main body 100 and covers one end of the cavity 110, the second connecting plate 500 is connected to the other end of the main body 100 and covers the other end of the cavity 110, and the first connecting plate 400 and the second connecting plate 500 are suitable for being connected with a longitudinal beam of a vehicle frame.

For example, the first end plate 200 may be welded in the cavity 110, the second end plate 300 may be welded in the cavity 110, the first connection plate 400 may be welded with one end of the body 100, and the second end plate 300 may be welded with the other end of the body 100. Wherein the body 100 may be a high strength steel pipe beam, and the body 100 may be a cylinder.

According to the utility model discloses beam assembly 1, through being equipped with main part 100 along its axial cavity 110 that link up, first end plate 200 and second end plate 300 are installed in cavity 110 and are arranged along the axial interval of main part 100, and main part 100, first end plate 200 and second end plate 300 inject gas storage chamber 120, and gas storage chamber 120 is suitable for and communicates with at least one in the air pressure braking unit of vehicle and the air suspension, provides the gas storage function for at least one in air pressure braking unit and the air suspension.

Like this, first end plate 200 can seal the one end of cavity 110, and second end plate 300 can seal the other end of cavity 110, and then can form a sealed gas storage chamber 120, be convenient for store gas, and moreover, first end plate 200 and second end plate 300 are installed in cavity 110, first end plate 200 and second end plate 300 are difficult to interfere with the external world, first end plate 200 and second end plate 300 are better to the sealed effect of gas storage chamber 120, be favorable to improving the leakproofness of gas storage chamber 120.

And, first end plate 200 and second end plate 300 can be in the radial direction support main part 100 of gas storage chamber 120, are favorable to improving the structural strength of main part 100, and then improve the atress bearing capacity of main part 100 to improve the structural strength of beam assembly 1, make beam assembly 1's bearing capacity stronger.

In addition, a first connection plate 400 is connected to one end of the main body 100 and covers one end of the cavity 110, a second connection plate 500 is connected to the other end of the main body 100 and covers the other end of the cavity 110, and the first connection plate 400 and the second connection plate 500 are adapted to be connected to a side rail of a vehicle frame.

That is to say, first connecting plate 400, second connecting plate 500 and main part 100 are three solitary parts, and first connecting plate 400, second connecting plate 500 and main part 100 can be connected the assembly together after the shaping alone respectively, can simplify beam assembly 1's processing technology like this, for the fashioned beam assembly of integrative casting among the prior art, the utility model discloses a beam assembly 1's structure can be simpler, and main part 100, first connecting plate 400 and second connecting plate 500's structure is also fairly simple, is favorable to reducing main part 100, first connecting plate 400 and second connecting plate 500's weight, and then can reduce beam assembly 1's overall quality, is favorable to realizing beam assembly 1's lightweight.

Moreover, the process requirement of the main body 100 which is formed by processing alone is simpler, so that the inner wall of the gas storage cavity 120 can be processed to be smoother, the inner wall of the gas storage cavity 120 is prevented from being too rough, the cleanliness of the inner wall of the gas storage cavity 120 is higher, and the gas storage is facilitated.

It should be noted that the first connecting plate 400 may be connected to the first longitudinal beam, and the second connecting plate 500 may be connected to the second longitudinal beam, wherein the first connecting plate 400 may also seal one end of the main body 100, and the second connecting plate 500 may seal the other end of the main body 100, so that double-layer sealing at two ends of the main body 100 may be achieved, the sealing effect of the gas storage cavity 120 is further improved, and the sealing performance is better.

Or, first connecting plate 400 and second connecting plate 500 also can not sealed main part 100, the part that is used for sealed main part 100 originally can be used for setting up the bolt hole, like this, first connecting plate 400 can set up more bolt holes, second connecting plate 500 also can set up more bolt holes, first connecting plate 400 is connected fixedly through a plurality of bolt holes and first longeron, second connecting plate 500 is connected fixedly through a plurality of bolt holes and second longeron, the area of connection of first connecting plate 400 and first longeron is bigger, the area of connection of second connecting plate 500 and second longeron is bigger, so that crossbeam main part 100 is more reliable with being connected of longeron, and then can improve the overall structure intensity of frame.

Therefore, according to the utility model discloses beam assembly 1 has structural strength height, sealed effectual and advantage such as light in weight.

In some embodiments of the present invention, as shown in fig. 3, the first end plate 200 and the first and second connection plates 400 and 500 are spaced apart from each other in the axial direction of the main body 100, and the second end plate 300 and the first and second connection plates 400 and 500 are spaced apart from each other in the axial direction of the main body 100.

In this way, the first connecting plate 400 and the first end plate 200 do not interfere with each other in position, and when the first connecting plate 400 and the first longitudinal beam are connected by the bolts, the bolts pass through the first connecting plate 400 and then do not easily interfere with the first end plate 200, so that the bolts can be prevented from damaging the first end plate 200, and the sealing effect of the first end plate 200 can be ensured.

In a similar way, the second connecting plate 500 and the second end plate 300 cannot be subjected to position interference, and when the second connecting plate 500 and the second longitudinal beam are connected through the bolt, the bolt cannot easily interfere with the second end plate 300 after passing through the second connecting plate 500, so that the bolt can be prevented from damaging the second end plate 300, the sealing effect of the second end plate 300 is ensured, and the overall sealing effect of the gas storage cavity 120 is further improved.

In addition, by spacing the first end plate 200 and the first connection plate 400, and spacing the second end plate 300 and the second connection plate 500, the first end plate 200 can be close to the central position of the main body 100 in the axial direction of the main body 100, and the second end plate 300 can be close to the central position of the main body 100 in the axial direction of the main body 100, that is, the first end plate 200 and the second end plate 300 are closer to the central position of the main body 100 in the axial direction, and the first end plate 200 and the second end plate 300 can more effectively improve the structural strength of the main body 100, and thus improve the structural strength of the cross beam assembly 1.

Further, the first connecting plate 400, the first end plate 200, the second end plate 300 and the second connecting plate 500 are sequentially arranged along the axial direction of the main body 100, the distance between the first end plate 200 and the first connecting plate 400 is 60 mm-100 mm, and/or the distance between the second end plate 300 and the second connecting plate 500 is 60 mm-100 mm.

The distance between the first end plate 200 and the first connection plate 400 is the distance between the first end plate 200 and the first connection plate 400 in the axial direction of the main body 100; the interval between the second end plate 300 and the second connection plate 500 means a distance between the second end plate 300 and the second connection plate 500 in the axial direction of the body 100.

For example, the distance between the first end plate 200 and the first connection plate 400 may be 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, or 100mm.

Thus, on one hand, the distance between the first end plate 200 and the first connection plate 400 is prevented from being too small, so that the first end plate 200 and the first connection plate 400 can be completely spaced, and further, the distance between the first end plate 200 and the first connection plate 400 is prevented from being too large, or the first end plate 200 and the bolt for fixing the first connection plate 400 interfere with each other, and on the other hand, the distance between the first end plate 200 and the first connection plate 400 is prevented from being too large, so that the distance between the first end plate 200 and the second end plate 300 can be ensured to be larger, so that the volume of the gas storage cavity 120 can be larger, and the amount of gas that can be stored is larger.

In addition, the distance between the second end plate 300 and the second connection plate 500 may be 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, or 100mm.

Thus, on one hand, the distance between the second end plate 300 and the second connecting plate 500 is prevented from being too small, so that the second end plate 300 and the second connecting plate 500 can be completely separated, further, the distance between the second end plate 300 and the second connecting plate 500 is prevented from being too large, or the second end plate 300 and the bolt for fixing the second connecting plate 500 are interfered with each other, on the other hand, the distance between the second end plate 300 and the second connecting plate 500 is prevented from being too large, so that the distance between the second end plate 300 and the first end plate 200 can be ensured to be larger, so that the volume of the air storage cavity 120 can be larger, and more air can be stored.

In some embodiments of the present invention, as shown in fig. 1-5, the main body 100 is further provided with a first gas port 130, a second gas port 140 and a third gas port 150 which are communicated with the gas storage chamber 120.

The first and second air ports 130 and 140 are provided at one of the upper and lower sides of the main body 100 and are spaced apart in the axial direction of the main body 100, and the third air port 150 is provided at the other of the upper and lower sides of the main body 100 and is located between the first and second air ports 130 and 140 in the axial direction of the main body 100, the first, second and third air ports 130, 140 and 150 being adapted to be connected to a pneumatic brake unit, an air suspension and an air charging device, respectively.

The inflation device may be an air compressor, and may be fixed to the frame of the vehicle or may not be connected to the frame, i.e., a separate component outside the vehicle, and is communicated with the air inlet when the air storage chamber 120 is to be inflated.

For example, the first and second ports 130 and 140 may be provided at the upper side of the main body 100, the first port 130 may be provided near one end of the main body 100 and the second port 140 may be provided near the other end of the main body 100, and the third port 150 may be provided at the lower side of the main body 100.

Like this, first gas port 130 and second gas port 140 can regard as the gas outlet, and third gas port 150 can regard as the air inlet, and like this, be connected with the inflation equipment through third gas port 150, the inflation equipment can inflate for gas storage chamber 120, and gas storage chamber 120 can be the gasbag air feed of the air brake unit or the air suspension that is close to the one end of main part 100 through first gas port 130, and gas storage chamber 120 can be the gasbag air feed of the air brake unit or the air suspension that is close to the other end of main part 100 through second gas port 140, it is convenient and fast to admit air and inflate.

Or, one of the first air inlet 130 and the second air inlet 140 may be an air inlet and the other may be an air outlet, and the third air inlet 150 may be a sewage outlet, so that dust entering the air storage chamber 120 along with the air inlet may be discharged through the third air outlet, which is beneficial to ensuring the cleanliness of the air storage chamber 120.

Of course, the first air port 130 may be used as an air inlet or an air outlet, the second air port 140 may be used as an air inlet or an air outlet, and the third air port 150 may be used as an air inlet or an air outlet, that is, the actual air inlet and outlet functions of the first air port 130, the second air port 140, and the third air port 150 may be adjusted according to the actual situation.

In some embodiments of the present invention, as shown in fig. 1, 2, 3 and 5, the beam assembly 1 further includes a fixing rib 600 and a fastener.

The fixing ribs 600 are mounted on the outer circumferential surface of the main body 100 and extend along the axial direction of the main body 100, the main body 100 is sleeved with a fastener and is suitable for fixing a wire harness, the fastener (not shown) is provided with anti-rotation protrusions (not shown), and the anti-rotation protrusions at least abut against one side of the fixing ribs 600 in the circumferential direction of the main body 100.

Specifically, fixed rib 600 protrudes from the outer peripheral surface of main body 100, and the fastener can stop to support in one side of fixed rib 600 in the circumference of main body 100 through preventing rotating the arch, or the fastener can stop to support in both sides of fixed rib 600 in the circumference of main body 100 through preventing rotating the arch simultaneously, and then can carry out spacingly to the fastener through fixed rib 600, avoid the fastener to rotate for main body 100 to make the fastener can fix the pencil more stably, avoid the pencil to take place to remove, walk the line more neatly. And, by setting the fixing rib 600 to be matched with the rotation-preventing protrusion, the fixing rib 600 does not destroy the structural strength of the main body 100.

In some embodiments of the present invention, as shown in fig. 1-5, the beam assembly 1 further comprises at least one left thrust rod support 700 and at least one right thrust rod support 800. Wherein the left and right thrust rod holders 700 and 800 may be welded to the main body 100, respectively.

The left thrust rod support 700 is installed at the left end of the main body 100, the right thrust rod support 800 is installed at the right end of the main body 100, and the left thrust rod support 700 and the right thrust rod support 800 are adapted to be connected with a thrust rod of a drive axle. In this way, the fixing of the thrust rods of the drive axle is more convenient, and the thrust rods at the two ends of the drive axle can be connected with the left thrust rod support 700 and the right thrust rod support 800 respectively, so that the connection is more convenient.

Further, as shown in fig. 2 and 3, the left thrust rod support 700 is plural and includes a first left thrust rod support 710 and a second left thrust rod support 720, the first left thrust rod support 710 is installed at the front side of the main body 100, and the second left thrust rod support 720 is installed at the rear side of the main body 100; the right thrust rod support 800 is a plurality of supports and includes a first right thrust rod support 810 and a second right thrust rod support 820, the first right thrust rod support 810 is installed at the front side of the main body 100, and the second right thrust rod support 820 is installed at the rear side of the main body 100.

For example, the driving axle is a double axle, and one of the two driving axles is located in front of the cross beam assembly 1 and the other one is located behind the cross beam assembly 1.

Specifically, when the driving axle is single-axle traction and the driving axle is at the rear of the beam assembly 1, the first left thrust rod support 710 and the first right thrust rod support 810 can be eliminated, and only the second left thrust rod support 720 and the second right thrust rod support 820 at the rear are reserved, so that the waste of the thrust rod supports is avoided, and the reduction of the total mass of the beam assembly 1 is facilitated.

When the driving axle is single-axle traction and the driving axle is in front of the beam assembly 1, the second left thrust rod support 720 and the second right thrust rod support 820 can be cancelled, and only the first left thrust rod support 710 and the first right thrust rod support 810 in front are reserved, so that the waste of the thrust rod supports is avoided, and the total mass of the beam assembly 1 is favorably reduced.

In some embodiments of the present invention, as shown in fig. 2 and 3, the left thrust rod support 700 is connected to one side of the first connection plate 400 facing the second connection plate 500, and the right thrust rod support 800 is connected to one side of the second connection plate 500 facing the first connection plate 400.

That is to say, left thrust bar support 700 can weld with main part 100 and first connecting plate 400 simultaneously, and left thrust bar support 700's connection is fixed more reliably, has further improved the stability of being connected of left thrust bar support 700 and beam assembly 1, and right thrust bar support 800 can weld with main part 100 and second connecting plate 500 simultaneously, and the connection of right thrust bar is fixed more reliably, has further improved the stability of being connected of right thrust bar support 800 and beam assembly 1.

The following describes the frame according to the embodiment of the present invention with reference to the drawings, the frame includes the first longitudinal beam, the second longitudinal beam and the beam assembly 1 according to the present invention, the first connecting plate 400 is connected with the first longitudinal beam, and the second connecting plate 500 is connected with the second longitudinal beam.

According to the utility model discloses the frame, through utilizing the utility model discloses the crossbeam assembly 1 of above-mentioned embodiment has structural strength height, sealed effectual and advantage such as light in weight.

The vehicle according to the embodiment of the present invention is described below with reference to the drawings, and the vehicle includes a frame, a pneumatic brake unit and an air suspension according to the present invention, the pneumatic brake unit is mounted on the frame, and the air suspension is mounted on the frame.

According to the utility model discloses vehicle, through utilizing according to the utility model discloses above-mentioned embodiment's frame has structural strength height, sealed effectual and advantage such as light in weight.

Other configurations and operations of the beam assembly 1, the vehicle frame, and the vehicle 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 terms "particular embodiment," "particular example," etc., 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.

While embodiments of the present 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 beam assembly, comprising:

the main body is provided with a cavity which is communicated along the axial direction of the main body;

the air storage cavity is suitable for being communicated with at least one of a pneumatic braking unit and an air suspension of a vehicle, and provides an air storage function for the at least one of the pneumatic braking unit and the air suspension;

the first connecting plate is connected to one end of the main body and covers one end of the cavity, the second connecting plate is connected to the other end of the main body and covers the other end of the cavity, and the first connecting plate and the second connecting plate are suitable for being connected with a longitudinal beam of a frame.

2. The cross-beam assembly of claim 1 wherein the first end plate is spaced from the first and second connection plates along an axial direction of the body;

the second end plate is arranged along the axial direction of the main body at intervals with the first connecting plate and the second connecting plate.

3. The beam assembly of claim 2 wherein the first connection plate, the first end plate, the second end plate, and the second connection plate are arranged in sequence along an axial direction of the body;

the distance between the first end plate and the first connecting plate is 60-100 mm, and/or the distance between the second end plate and the second connecting plate is 60-100 mm.

4. The beam assembly of claim 1 wherein the main body is further provided with first, second and third air ports communicating with the air reservoir chamber, the first and second air ports being provided in one of the upper and lower sides of the main body and being spaced axially of the main body, the third air port being provided in the other of the upper and lower sides of the main body and being located axially of the main body between the first and second air ports;

wherein the first, second and third air ports are adapted to be connected to a pneumatic brake unit, an air suspension and an inflation device, respectively.

5. The beam assembly of claim 1 further comprising:

the fixing ribs are mounted on the outer peripheral surface of the main body and extend along the axial direction of the main body;

the fastener is sleeved on the main body and is suitable for fixing a wire harness, the fastener is provided with an anti-rotation bulge, and the anti-rotation bulge at least abuts against one side of the fixing rib in the circumferential direction of the main body.

6. The beam assembly of claim 1 further comprising:

at least one left thrust rod support mounted to a left end of the main body;

at least one right thrust rod support, which is mounted at the right end of the main body;

the left thrust rod support and the right thrust rod support are suitable for being connected with a thrust rod of a drive axle.

7. The beam assembly of claim 6, wherein the left thrust rod supports are plural and include a first left thrust rod support mounted to a front side of the body and a second left thrust rod support mounted to a rear side of the body;

the right thrust rod support is a plurality of and includes first right thrust rod support and second right thrust rod support, first right thrust rod support install in the front side of main part, second right thrust rod support install in the rear side of main part.

8. The beam assembly of claim 7 wherein the left thrust rod bracket is connected to a side of the first link plate facing the second link plate;

the right thrust rod support is connected with one side, facing the first connecting plate, of the second connecting plate.

9. A vehicle frame, comprising:

a first stringer and a second stringer;

the cross-beam assembly of any of claims 1-8, the first connecting plate being connected with the first rail and the second connecting plate being connected with the second rail.

10. A vehicle, characterized by comprising:

the vehicle frame of claim 9;

a pneumatic brake unit mounted to the frame;

an air suspension mounted to the frame.

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