Modular beam structure for special vehicle

Abstract

The application discloses a kind of special car modularization beam structure, it includes left support frame, right support frame, upper connecting beam and two lower connecting beams, upper connecting beam is fixedly connected between the upper end of left support frame and right support frame, two lower connecting beams are fixedly connected between the lower end of left support frame and right support frame, two lower connecting beams are arranged along front and back direction interval, the side of left support frame away from upper connecting beam / lower connecting beam is equipped with upper lateral arm connecting port and lower lateral arm connecting port, the side of right support frame away from upper connecting beam / lower connecting beam is also equipped with upper lateral arm connecting port and lower lateral arm connecting port, left support frame and right support frame are also equipped with transmission shaft avoiding hole.The purpose is to provide a kind of special car modularization beam structure, meets the design requirement of beam structure height integration and big bearing, and with the characteristics of universality, can improve the product efficiency and reliability of frame assembly.

Description

Technical Field

[0001] This invention relates to a load-bearing structure for multi-axle heavy-duty special vehicles, and in particular to a crossbeam structure. Background Technology

[0002] A certain multi-axle heavy-duty special vehicle has requirements for high load-bearing capacity and high integration in its frame crossbeam structure. It must provide installation space for the suspension guiding mechanism, drive motor, etc.; bear the load of the upper and lower connecting crossbeams in the double wishbone suspension guiding mechanism; and avoid the swing space of the suspension guiding mechanism, drive shaft, etc., as well as the space for disassembling and assembling the motor. Multiple crossbeam structures need to be arranged on a multi-axle heavy-duty special vehicle. Designing them according to different requirements would result in a variety of crossbeam types, complex structures, and difficulty in controlling their technical condition. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a modular crossbeam structure for special vehicles that meets the design requirements of high integration and high load-bearing capacity of crossbeam structures, and has the characteristics of versatility, thereby improving the product efficiency and reliability of the vehicle frame assembly.

[0004] This invention relates to a modular crossbeam structure for special vehicles, comprising a left support frame, a right support frame, an upper connecting crossbeam, and two lower connecting crossbeams. The upper connecting crossbeam is fixedly connected between the upper ends of the left and right support frames, and two lower connecting crossbeams are fixedly connected between the lower ends of the left and right support frames. The two lower connecting crossbeams are arranged at intervals along the front-rear direction. The left support frame has an upper cross arm connection port and a lower cross arm connection port on the side away from the upper / lower connecting crossbeams, and the right support frame also has an upper cross arm connection port and a lower cross arm connection port on the side away from the upper / lower connecting crossbeams. Both the left and right support frames are also provided with drive shaft clearance holes.

[0005] This invention relates to a modular crossbeam structure for special vehicles, wherein both the left and right support frames include an upper connecting longitudinal plate, a side plate, a lower connecting longitudinal plate, a front vertical arm, and a rear vertical arm. The front and rear vertical arms are spaced apart in the front-rear direction. An upper connecting longitudinal plate is fixedly connected between the upper ends of the front and rear vertical arms, and a lower connecting longitudinal plate is fixedly connected between the lower ends of the front and rear vertical arms. A side plate is fixedly connected to the side of the front and rear vertical arms away from the upper / lower connecting crossbeam, and a drive shaft is provided on the side plate. The drive shaft includes a clearance hole, an upper horizontal arm through hole, and two lower horizontal arm through holes. The clearance hole is located between the front and rear vertical arms. The upper connecting longitudinal plate has an upper horizontal arm slot, which is arranged opposite to the upper horizontal arm through hole. The upper horizontal arm slot and the upper horizontal arm through hole together form the upper horizontal arm connection port. Both the front and rear vertical arms have lower horizontal arm slots, which are arranged one-to-one with the two lower horizontal arm through holes. The lower horizontal arm slots and the corresponding lower horizontal arm through holes together form the lower horizontal arm connection port.

[0006] The present invention relates to a modular crossbeam structure for special vehicles, wherein an upper connecting crossbeam is fixedly connected between the upper connecting longitudinal plate of the left support frame and the upper connecting longitudinal plate of the right support frame, a lower connecting crossbeam is fixedly connected between the front vertical arm of the left support frame and the front vertical arm of the right support frame, and another lower connecting crossbeam is fixedly connected between the rear vertical arm of the left support frame and the rear vertical arm of the right support frame.

[0007] The present invention relates to a modular crossbeam structure for special vehicles, wherein the front vertical arm and the rear vertical arm each include a front vertical plate and a rear vertical plate arranged opposite to each other in the front-rear direction, a lower cross arm slot is formed between the front vertical plate and the rear vertical plate of the front vertical arm, and a lower cross arm slot is also formed between the front vertical plate and the rear vertical plate of the rear vertical arm.

[0008] This invention relates to a modular crossbeam structure for special vehicles, wherein the front and rear vertical arms of the left support frame are respectively the left front vertical arm and the left rear vertical arm, and the front and rear vertical arms of the right support frame are respectively the right front vertical arm and the right rear vertical arm. A left reinforcing rib is fixedly connected between the left front vertical arm and the left rear vertical arm, and the left reinforcing rib is fixedly connected between the rear vertical plate of the left front vertical arm and the front vertical plate of the left rear vertical arm. A right reinforcing rib is fixedly connected between the right front vertical arm and the right rear vertical arm, and the right reinforcing rib is fixedly connected between the rear vertical plate of the right front vertical arm and the front vertical plate of the right rear vertical arm.

[0009] This invention relates to a modular crossbeam structure for special vehicles, wherein the upper connecting crossbeam includes a first front side plate, a first rear side plate, a first upper side plate, and a first lower side plate. The first front side plate and the first rear side plate are arranged opposite each other in the front-rear direction, and the first upper side plate and the first lower side plate are arranged opposite each other in the vertical direction. The first upper side plate is fixedly connected between the upper ends of the first front side plate and the first rear side plate, and the first lower side plate is fixedly connected between the lower ends of the first front side plate and the first rear side plate. A circular tube for cable passage is fixedly connected between the first front side plate and the first rear side plate. The first lower side plate is inverted U-shaped. The two ends of the first front side plate, the first rear side plate, and the first lower side plate are respectively fixedly connected between the upper connecting longitudinal plate of the left support frame and the upper connecting longitudinal plate of the right support frame.

[0010] The present invention relates to a modular crossbeam structure for special vehicles, wherein both of the lower connecting crossbeams include a second front side plate, a second rear side plate, a second upper side plate, and a second lower side plate. The second front side plate and the second rear side plate are arranged opposite each other in the front-rear direction, and the second upper side plate and the second lower side plate are arranged opposite each other in the vertical direction. The second upper side plate is fixedly connected between the upper ends of the second front side plate and the second rear side plate, and the second lower side plate is fixedly connected between the lower ends of the second front side plate and the second rear side plate. The second upper side plate is U-shaped.

[0011] The present invention relates to a modular crossbeam structure for special vehicles, wherein the second upper side plate is provided with an interface for installing a transmission system.

[0012] This invention relates to a modular crossbeam structure for special vehicles, wherein the two lower connecting crossbeams are a front lower connecting crossbeam and a rear lower connecting crossbeam. The two ends of the front lower connecting crossbeam are fixedly connected between the left and right front vertical arms, respectively. The two ends of the rear lower connecting crossbeam are fixedly connected between the left and right rear vertical arms, respectively. The two ends of the front lower connecting crossbeam are a first end and a second end, respectively. The first end and the second end are fixedly connected to the left and right front vertical arms, respectively. The second front side plate of the first end is located in front of the front vertical plate of the left front vertical arm. The second upper side plate and the second rear side plate of the first end are both located between the front and rear vertical plates of the left front vertical arm. The second... The front side plate is located in front of the front vertical plate of the right front vertical arm. The second upper side plate and the second rear side plate of the second end are both located between the front vertical plate and the rear vertical plate of the right front vertical arm. The two ends of the rear lower connecting crossbeam are the third end and the fourth end, respectively. The third end and the fourth end are fixedly connected to the left rear vertical arm and the right rear vertical arm, respectively. The second rear side plate of the third end is located behind the rear vertical plate of the left rear vertical arm. The second upper side plate and the second front side plate of the third end are both located between the front vertical plate and the rear vertical plate of the left rear vertical arm. The second rear side plate of the fourth end is located behind the rear vertical plate of the right rear vertical arm. The second upper side plate and the second front side plate of the fourth end are both located between the front vertical plate and the rear vertical plate of the right rear vertical arm.

[0013] This invention relates to a modular crossbeam structure for special vehicles. The upper crossbeam connection port has two opposing upper crossbeam pin holes, and the lower crossbeam connection port has two opposing lower crossbeam pin holes. The front and rear vertical plates within the lower crossbeam slot of the left front vertical arm each have a lower crossbeam pin hole. The second front side plate at the first end has a through hole corresponding to the lower crossbeam pin hole of the front vertical plate of the left front vertical arm. The second rear side plate at the first end has a through hole corresponding to the lower crossbeam pin hole of the rear vertical plate of the left front vertical arm. The front and rear vertical plates within the lower crossbeam slot of the right front vertical arm also have lower crossbeam pin holes. The second front side plate at the second end has a through hole corresponding to the lower crossbeam pin hole of the front vertical plate of the right front vertical arm. The second rear side plate is provided with a through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the right front vertical arm. The front and rear vertical plates in the lower horizontal arm slot of the left rear vertical arm are also provided with lower horizontal arm pin holes. The second front side plate at the third end is provided with a through hole corresponding to the lower horizontal arm pin hole of the front vertical plate of the left rear vertical arm. The second rear side plate at the third end is provided with a through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the left rear vertical arm. The front and rear vertical plates in the lower horizontal arm slot of the right rear vertical arm are also provided with lower horizontal arm pin holes. The second front side plate at the fourth end is provided with a through hole corresponding to the lower horizontal arm pin hole of the front vertical plate of the right rear vertical arm. The second rear side plate at the fourth end is provided with a through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the right rear vertical arm.

[0014] The modular crossbeam structure for special vehicles of this invention differs from existing technologies in that it includes a left support frame, a right support frame, and upper and lower connecting crossbeams capable of modular manufacturing. These connecting crossbeams are then fixedly connected between the left and right support frames via welding. Both the left and right support frames have pre-drilled connection ports for the upper and lower control arms, respectively, for mounting suspension guide mechanisms. A transmission system can be installed between the upper and lower connecting crossbeams, and both the left and right support frames have drive shaft clearance holes. Therefore, this invention meets the design requirements for high integration and high load-bearing capacity of the crossbeam structure, and possesses versatility, thereby improving the product efficiency and reliability of the vehicle frame assembly.

[0015] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the modular crossbeam structure for special vehicles according to the present invention;

[0017] Figure 2 For along Figure 1 View A in the middle;

[0018] Figure 3 For along Figure 1 View B in the middle;

[0019] Figure 4 This is an exploded view of the modular crossbeam structure for the special vehicle of this invention;

[0020] Figure 5 This is a schematic diagram of the upper connecting beam in this invention;

[0021] Figure 6 This is a schematic diagram of the lower connecting beam in this invention. Detailed Implementation

[0022] like Figure 1 As shown, and in combination Figure 2-6 As shown, the modular crossbeam structure for special vehicles of the present invention includes a left support frame 1, a right support frame 9, an upper connecting crossbeam 6, and two lower connecting crossbeams. The left support frame 1 and the right support frame 9 are arranged symmetrically and spaced apart in the left-right direction. The upper connecting crossbeam 6 is fixedly connected between the upper ends of the left support frame 1 and the right support frame 9. Two lower connecting crossbeams are fixedly connected between the lower ends of the left support frame 1 and the right support frame 9. The two lower connecting crossbeams are arranged spaced apart in the front-back direction. The left support frame 1 has an upper cross arm connection port 10 and a lower cross arm connection port 14 on the side away from the upper connecting crossbeam 6 / lower connecting crossbeam. The right support frame 9 also has an upper cross arm connection port 10 and a lower cross arm connection port 14 on the side away from the upper connecting crossbeam 6 / lower connecting crossbeam. Both the left support frame 1 and the right support frame 9 are also provided with drive shaft clearance holes 15.

[0023] This invention relates to a modular crossbeam structure for special vehicles, wherein both the left support frame 1 and the right support frame 9 include an upper connecting longitudinal plate 2, a side plate 12, a lower connecting longitudinal plate, a front vertical arm, and a rear vertical arm. The front and rear vertical arms are arranged at intervals along the front-rear direction. The upper connecting longitudinal plate 2 is fixedly connected between the upper ends of the front and rear vertical arms, and the lower connecting longitudinal plate is fixedly connected between the lower ends of the front and rear vertical arms. The side plate 12 is fixedly connected to the side of the front and rear vertical arms away from the upper connecting crossbeam 6 / lower connecting crossbeam. A transmission mechanism is provided on the side plate 12. The transmission shaft avoidance hole 15, the upper horizontal arm through hole, and two lower horizontal arm through holes are provided. The transmission shaft avoidance hole 15 is located between the front vertical arm and the rear vertical arm. The upper connecting longitudinal plate 2 is provided with an upper horizontal arm slot. The upper horizontal arm slot and the upper horizontal arm through hole are arranged opposite to each other. The upper horizontal arm slot and the upper horizontal arm through hole together form the upper horizontal arm connection port 10. The front vertical arm and the rear vertical arm are both provided with lower horizontal arm slots. The two lower horizontal arm slots are arranged one-to-one with the two lower horizontal arm through holes. The lower horizontal arm slots and the corresponding lower horizontal arm through holes together form the lower horizontal arm connection port 14.

[0024] It should be noted that the upper cross arm slot can be set by adding a new plate on the upper connecting longitudinal plate 2. That is, the upper cross arm slot is formed by fixing the newly added plate to the upper connecting longitudinal plate 2. Of course, the newly added plate can also be combined with the front vertical arm / rear vertical arm to form the upper cross arm slot. As for the specific setting, the staff can choose according to the actual situation.

[0025] The present invention relates to a modular crossbeam structure for special vehicles, wherein an upper connecting crossbeam 6 is fixedly connected between the upper connecting longitudinal plate 2 of the left support frame 1 and the upper connecting longitudinal plate 2 of the right support frame 9; a lower connecting crossbeam is fixedly connected between the front vertical arm of the left support frame 1 and the front vertical arm of the right support frame 9; and another lower connecting crossbeam is fixedly connected between the rear vertical arm of the left support frame 1 and the rear vertical arm of the right support frame 9.

[0026] The present invention relates to a modular crossbeam structure for special vehicles, wherein the front vertical arm and the rear vertical arm each include a front vertical plate 23 and a rear vertical plate 25 arranged opposite to each other in the front-rear direction. A lower cross arm slot is formed between the front vertical plate 23 and the rear vertical plate 25 of the front vertical arm, and a lower cross arm slot is also formed between the front vertical plate 23 and the rear vertical plate 25 of the rear vertical arm.

[0027] The present invention relates to a modular crossbeam structure for special vehicles, wherein the front vertical arm and rear vertical arm of the left support frame 1 are respectively the left front vertical arm 24 and the left rear vertical arm 26, and the front vertical arm and rear vertical arm of the right support frame 9 are respectively the right front vertical arm 16 and the right rear vertical arm 32. A left reinforcing rib 22 is fixedly connected between the left front vertical arm 24 and the left rear vertical arm 26, and the left reinforcing rib 22 is fixedly connected between the rear vertical plate 25 of the left front vertical arm 24 and the front vertical plate 23 of the left rear vertical arm 26. A right reinforcing rib 31 is fixedly connected between the right front vertical arm 16 and the right rear vertical arm 32, and the right reinforcing rib 31 is fixedly connected between the rear vertical plate 25 of the right front vertical arm 16 and the front vertical plate 23 of the right rear vertical arm 32.

[0028] like Figure 1 , 3 As shown in Figures 4 and 5, the modular crossbeam structure for special vehicles of the present invention includes an upper connecting crossbeam 6 comprising a first front side plate 7, a first rear side plate 8, a first upper side plate 5, and a first lower side plate 4. The first front side plate 7 and the first rear side plate 8 are arranged opposite each other in the front-rear direction, and the first upper side plate 5 and the first lower side plate 4 are arranged opposite each other in the vertical direction. The first upper side plate 5 is fixedly connected between the upper ends of the first front side plate 7 and the first rear side plate 8, and the first lower side plate 4 is fixedly connected between the lower ends of the first front side plate 7 and the first rear side plate 8. A circular tube 3 for cable passage is fixedly connected between the first front side plate 7 and the first rear side plate 8. The first lower side plate 4 is inverted U-shaped. The two ends of the first front side plate 7, the first rear side plate 8, and the first lower side plate 4 are respectively fixedly connected between the upper connecting longitudinal plate 2 of the left support frame 1 and the upper connecting longitudinal plate 2 of the right support frame 9.

[0029] like Figure 1 , 3 As shown in Figures 4 and 6, the modular crossbeam structure for special vehicles of the present invention includes two identical lower connecting crossbeams. Each lower connecting crossbeam comprises a second front side plate 17, a second rear side plate 29, a second upper side plate 19, and a second lower side plate 18. The second front side plate 17 and the second rear side plate 29 are arranged opposite each other in the front-rear direction, and the second upper side plate 19 and the second lower side plate 18 are arranged opposite each other in the vertical direction. The second upper side plate 19 is fixedly connected between the upper ends of the second front side plate 17 and the second rear side plate 29, and the second lower side plate 18 is fixedly connected between the lower ends of the second front side plate 17 and the second rear side plate 29. The second upper side plate 19 is U-shaped. An interface 28 for mounting a transmission system is provided on the second upper side plate 19.

[0030] This invention relates to a modular crossbeam structure for special vehicles, wherein the two lower connecting crossbeams are a front lower connecting crossbeam 20 and a rear lower connecting crossbeam 21. The two ends of the front lower connecting crossbeam 20 are fixedly connected between the left front vertical arm 24 and the right front vertical arm 16, respectively. The two ends of the rear lower connecting crossbeam 21 are fixedly connected between the left rear vertical arm 26 and the right rear vertical arm 32, respectively. The two ends of the front lower connecting crossbeam 20 are a first end and a second end, respectively, which are fixedly connected to the left front vertical arm 24 and the right front vertical arm 16, respectively. The second front side plate 17 of the first end is located in front of the front vertical plate 23 of the left front vertical arm 24. The second upper side plate 19 and the second rear side plate 29 of the first end are both located between the front vertical plate 23 and the rear vertical plate 25 of the left front vertical arm 24. The second front side plate 17 of the second end is located in front of the right... In front of the front vertical plate 23 of the front vertical arm 16, the second upper side plate 19 and the second rear side plate 29 of the second end are both located between the front vertical plate 23 and the rear vertical plate 25 of the right front vertical arm 16. The two ends of the rear lower connecting beam 21 are the third end and the fourth end, respectively. The third end and the fourth end are fixedly connected to the left rear vertical arm 26 and the right rear vertical arm 32, respectively. The second rear side plate 29 of the third end is located behind the rear vertical plate 25 of the left rear vertical arm 26. The second upper side plate 19 and the second front side plate 17 of the third end are both located between the front vertical plate 23 and the rear vertical plate 25 of the left rear vertical arm 26. The second rear side plate 29 of the fourth end is located behind the rear vertical plate 25 of the right rear vertical arm 32. The second upper side plate 19 and the second front side plate 17 of the fourth end are both located between the front vertical plate 23 and the rear vertical plate 25 of the right rear vertical arm 32.

[0031] Because the second lower side plate 18 of the front lower connecting beam 20 is relatively short, it is not connected to the left front vertical arm 24 and the right front vertical arm 16; similarly, the second lower side plate 18 of the rear lower connecting beam 21 is also relatively short, so it is not connected to the left rear vertical arm 26 and the right rear vertical arm 32.

[0032] A slot is provided between the second front side plate 17 and the second upper side plate 19 at the first end. When the second front side plate 17 at the first end is located in front of the front vertical plate 23 of the left front vertical arm 24, and the second upper side plate 19 and the second rear side plate 29 at the first end are located between the front vertical plate 23 and the rear vertical plate 25 of the left front vertical arm 24, the front vertical plate 23 of the left front vertical arm 24 is engaged in the slot. Similarly, a slot is also provided between the second front side plate 17 and the second upper side plate 19 at the second end. When the second front side plate 17 at the second end is located in front of the front vertical plate 23 of the right front vertical arm 16, and the second upper side plate 19 and the second rear side plate 29 at the second end are located between the front vertical plate 23 and the rear vertical plate 25 of the right front vertical arm 16, the front vertical plate 23 of the right front vertical arm 16 is engaged in the slot. A slot is also provided between the second rear side plate 29 and the second upper side plate 19 at the third end. When the second rear side plate 29 at the third end is located behind the rear vertical plate 25 of the left rear vertical arm 26, and the second upper side plate 19 and the second rear side plate 29 at the third end are engaged in the slot. When the second upper side plate 19 and the second front side plate 17 at the third end are located between the front vertical plate 23 and the rear vertical plate 25 of the left rear vertical arm 26, the rear vertical plate 25 of the left rear vertical arm 26 is locked in the slot; a slot is also provided between the second rear side plate 29 and the second upper side plate 19 at the fourth end. When the second rear side plate 29 at the fourth end is located behind the rear vertical plate 25 of the right rear vertical arm 32 and when the second upper side plate 19 and the second front side plate 17 at the fourth end are located between the front vertical plate 23 and the rear vertical plate 25 of the right rear vertical arm 32, the rear vertical plate 25 of the right rear vertical arm 32 is locked in the slot.

[0033] The lower connecting longitudinal plate of the left support frame 1 is provided with two support arms 27 extending towards the right support frame 9. These two support arms 27 support the first end of the front lower connecting crossbeam 20 and the third end of the rear lower connecting crossbeam 21, respectively. The lower connecting longitudinal plate of the right support frame 9 is provided with two support arms 27 extending towards the left support frame 1. These two support arms 27 support the second end of the front lower connecting crossbeam 20 and the fourth end of the rear lower connecting crossbeam 21, respectively.

[0034] In this embodiment, for the left support frame 1 and the right support frame 9, the side plate 12, the lower connecting longitudinal plate and the two support arms 27 of each support frame together form an integral structure.

[0035] This invention relates to a modular crossbeam structure for special vehicles, wherein the upper crossarm connection port 10 has two opposing upper crossarm pin holes 11, and the lower crossarm connection port 14 has two opposing lower crossarm pin holes 13. The upper crossarm of the suspension guide mechanism is mounted on the upper crossarm pin holes 11 via upper crossarm pins, and the lower crossarm is mounted on the lower crossarm pin holes 13 via lower crossarm pins.

[0036] The left front vertical arm 24 has lower horizontal arm pin holes 13 on its front vertical plate 23 and rear vertical plate 25 within the lower horizontal arm slot. The second front side plate 17 at the first end has a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the front vertical plate 23 of the left front vertical arm 24. The second rear side plate 29 at the first end has a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the rear vertical plate 25 of the left front vertical arm 24. The right front vertical arm 16 also has lower horizontal arm pin holes 13 on its front vertical plate 23 and rear vertical plate 25 within the lower horizontal arm slot. The second front side plate 17 at the second end has a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the front vertical plate 23 of the right front vertical arm 16. The second rear side plate 29 at the second end has a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the rear vertical plate 25 of the right front vertical arm 16. The front vertical plate 23 and rear vertical plate 25 in the lower horizontal arm slot of the left rear vertical arm 26 are also provided with lower horizontal arm pin holes 13. The second front side plate 17 at the third end is provided with a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the front vertical plate 23 of the left rear vertical arm 26. The second rear side plate 29 at the third end is provided with a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the rear vertical plate 25 of the left rear vertical arm 26. The front vertical plate 23 and rear vertical plate 25 in the lower horizontal arm slot of the right rear vertical arm 32 are also provided with lower horizontal arm pin holes 13. The second front side plate 17 at the fourth end is provided with a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the front vertical plate 23 of the right rear vertical arm 32. The second rear side plate 29 at the fourth end is provided with a through hole 30 corresponding to the lower horizontal arm pin hole 13 of the rear vertical plate 25 of the right rear vertical arm 32.

[0037] The reason for providing through holes 30 on the second front side plate 17 and the second rear side plate 29 of the front lower connecting beam 20 / rear lower connecting beam 21 is to avoid hindering the installation of the lower crossarm pin, that is, the lower crossarm pin can be installed in the lower crossarm pin hole 13 and the corresponding through hole 30. In addition, taking the left front vertical arm 24 and the first end as an example, another function of the through hole 30 can be explained. The lower crossarm pin hole 13 of the front vertical plate 23 and the rear vertical plate 25 of the left front vertical arm 24 can be provided with annular protrusions, so that the through hole 30 on the second front side plate 17 of the first end matches the annular protrusion on the front vertical plate 23, and the through hole 30 on the second rear side plate 29 of the first end matches the annular protrusion on the rear vertical plate 25. In this way, the first end and the left front vertical arm 24 can be engaged through the through hole 30 and the annular protrusion, thereby facilitating subsequent welding operations. Similarly, the second end and the right front vertical arm 16, the third end and the left rear vertical arm 26, and the fourth end and the right rear vertical arm 32 can also be connected by through holes 30 and annular protrusions, which facilitates subsequent welding operations.

[0038] The modular crossbeam structure for special vehicles of this invention differs from existing technologies in that it includes a left support frame 1, a right support frame 9, and upper and lower connecting crossbeams capable of modular manufacturing. These connecting crossbeams are then fixedly connected between the left support frame 1 and the right support frame 9 by welding. Both the left and right support frames 1 and 9 have pre-drilled upper crossarm connection ports 10 and lower crossarm connection ports 14 for mounting suspension guide mechanisms. A transmission system can be installed between the upper and lower connecting crossbeams, and both the left and right support frames 1 and 9 are provided with drive shaft clearance holes 15. Therefore, this invention can meet the design requirements of high integration and high load-bearing capacity of the crossbeam structure, and possesses versatility, thereby improving the product efficiency and reliability of the vehicle frame assembly.

[0039] This invention simultaneously meets the requirements of installation, load-bearing, and obstacle avoidance, and its structure is universal, allowing application in the crossbeams of different special vehicle frames, effectively improving structural production efficiency and reliability. The structural layout of this invention fully considers load-bearing and installation, while also possessing adjustability and versatility, resulting in high frame reliability.

[0040] The beneficial effects of this invention are as follows:

[0041] Modular beam structures are characterized by high integration, high load-bearing capacity, and versatility, and can meet the requirements of efficient production and high reliability of multi-axle special vehicle chassis assembly structures.

[0042] (1) The modular crossbeam structure is formed by welding and the dimensions of the key interfaces are ensured to meet the requirements by machining. The crossbeam structure is arranged between the left and right longitudinal beams of the frame and is connected to the longitudinal beams by welding and bolts.

[0043] (2) The main function of the upper connecting beam 6 is to connect the left support frame 1 and the right support frame 9. The height can be adjusted according to the height of the longitudinal beam. A round pipe 3 can be arranged in the middle of the structure to facilitate the passage of cables.

[0044] (3) The left support frame 1 and the right support frame 9 are symmetrical. Each support frame is equipped with an installation interface for the suspension guide mechanism, namely the upper cross arm connection port 10 and the lower cross arm connection port 14. After the cross beam structure is welded, the installation position needs to be machined as a whole to ensure the installation requirements such as coaxiality, height, and width. The left support frame 1 and the right support frame 9 are connected to the upper and lower connecting cross beams by welding. The drive shaft clearance hole 15 needs to be arranged in the middle of the side plate 12 to ensure the clearance space for the drive shaft.

[0045] (4) The lower connecting beam is connected to the left and right support frames 9 by welding. Its length can be determined according to the width of the left and right longitudinal beams. At the same time, an interface 28 for installing the transmission system is reserved to ensure the installation and disassembly of the transmission system inside.

[0046] (5) The upper connecting beam 6 and the lower connecting beam mainly bear the lateral load transmitted by the suspension guide mechanism; the left support frame 1 and the right support frame 9 bear the vertical load of the suspension guide mechanism; the structural rigidity design is carried out according to the axle load of the multi-axle special vehicle, and the lightweight design is carried out under the full safety factor requirements.

[0047] (6) The load-bearing capacity, installation interface and clearance space encompass multiple products, realizing the modular design of the crossbeam structure; some interfaces are adjustable and can be adapted to the requirements of the frame products, which can effectively improve the design and production efficiency and load-bearing reliability of the frame products.

[0048] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A modular crossbeam structure for special vehicles, characterized in that: The system includes a left support frame, a right support frame, an upper connecting crossbeam, and two lower connecting crossbeams. The upper connecting crossbeam is fixedly connected between the upper ends of the left and right support frames, and two lower connecting crossbeams are fixedly connected between their lower ends. The two lower connecting crossbeams are spaced apart along the front-to-back direction. The left support frame has an upper crossarm connection port and a lower crossarm connection port on the side away from the upper / lower connecting crossbeam, and the right support frame also has an upper crossarm connection port and a lower crossarm connection port on the side away from the upper / lower connecting crossbeam. Both the left and right support frames also have drive shaft clearance holes. Both the left and right support frames include an upper connecting longitudinal plate, a side plate, a lower connecting longitudinal plate, a front vertical arm, and a rear vertical arm. The front and rear vertical arms are spaced apart in the front-rear direction. The upper connecting longitudinal plate is fixedly connected between the upper ends of the front and rear vertical arms, and the lower connecting longitudinal plate is fixedly connected between the lower ends of the front and rear vertical arms. A side plate is fixedly connected to the side of the front and rear vertical arms away from the upper / lower connecting crossbeam. The side plate has a drive shaft clearance hole and an upper crossbeam passage. The upper connecting longitudinal plate has an upper horizontal arm slot and two lower horizontal arm through holes. The drive shaft clearance hole is located between the front and rear vertical arms. The upper horizontal arm slot and the upper horizontal arm through hole are arranged opposite to each other, and the upper horizontal arm slot and the upper horizontal arm through hole together form the upper horizontal arm connection port. The front and rear vertical arms each have a lower horizontal arm slot, and the two lower horizontal arm slots are arranged one-to-one with the two lower horizontal arm through holes. The lower horizontal arm slots and the corresponding lower horizontal arm through holes together form the lower horizontal arm connection port. An upper connecting crossbeam is fixedly connected between the upper connecting longitudinal plate of the left support frame and the upper connecting longitudinal plate of the right support frame. A lower connecting crossbeam is fixedly connected between the front vertical arm of the left support frame and the front vertical arm of the right support frame. Another lower connecting crossbeam is fixedly connected between the rear vertical arm of the left support frame and the rear vertical arm of the right support frame. Both the front vertical arm and the rear vertical arm include a front vertical plate and a rear vertical plate arranged opposite to each other in the front-rear direction. A lower horizontal arm groove is formed between the front vertical plate and the rear vertical plate of the front vertical arm, and a lower horizontal arm groove is also formed between the front vertical plate and the rear vertical plate of the rear vertical arm.

2. The modular crossbeam structure for special vehicles according to claim 1, characterized in that: The front and rear vertical arms of the left support frame are respectively the left front vertical arm and the left rear vertical arm, and the front and rear vertical arms of the right support frame are respectively the right front vertical arm and the right rear vertical arm. A left reinforcing rib is fixedly connected between the left front vertical arm and the left rear vertical arm. The left reinforcing rib is fixedly connected between the rear vertical plate of the left front vertical arm and the front vertical plate of the left rear vertical arm. A right reinforcing rib is fixedly connected between the right front vertical arm and the right rear vertical arm. The right reinforcing rib is fixedly connected between the rear vertical plate of the right front vertical arm and the front vertical plate of the right rear vertical arm.

3. The modular crossbeam structure for special vehicles according to claim 2, characterized in that: The upper connecting beam includes a first front side plate, a first rear side plate, a first upper side plate, and a first lower side plate. The first front side plate and the first rear side plate are arranged opposite each other in the front-rear direction, and the first upper side plate and the first lower side plate are arranged opposite each other in the vertical direction. The first upper side plate is fixedly connected between the upper ends of the first front side plate and the first rear side plate, and the first lower side plate is fixedly connected between the lower ends of the first front side plate and the first rear side plate. A circular tube for cable passage is fixedly connected between the first front side plate and the first rear side plate. The first lower side plate is inverted U-shaped. The two ends of the first front side plate, the first rear side plate, and the first lower side plate are respectively fixedly connected between the upper connecting longitudinal plate of the left support frame and the upper connecting longitudinal plate of the right support frame.

4. The modular crossbeam structure for special vehicles according to claim 3, characterized in that: Both of the lower connecting crossbeams include a second front side plate, a second rear side plate, a second upper side plate, and a second lower side plate. The second front side plate and the second rear side plate are arranged opposite each other in the front-to-back direction, and the second upper side plate and the second lower side plate are arranged opposite each other in the up-down direction. The second upper side plate is fixedly connected between the upper ends of the second front side plate and the second rear side plate, and the second lower side plate is fixedly connected between the lower ends of the second front side plate and the second rear side plate. The second upper side plate is U-shaped.

5. The modular crossbeam structure for special vehicles according to claim 4, characterized in that: The second upper side plate is provided with an interface for installing the transmission system.

6. The modular crossbeam structure for special vehicles according to claim 5, characterized in that: The two lower connecting beams are a front lower connecting beam and a rear lower connecting beam. The two ends of the front lower connecting beam are fixedly connected between the left front vertical arm and the right front vertical arm, respectively. The two ends of the rear lower connecting beam are fixedly connected between the left rear vertical arm and the right rear vertical arm, respectively. The two ends of the front lower connecting beam are a first end and a second end, respectively, which are fixedly connected to the left front vertical arm and the right front vertical arm, respectively. The second front side plate of the first end is located in front of the front vertical plate of the left front vertical arm. The second upper side plate and the second rear side plate of the first end are both located between the front and rear vertical plates of the left front vertical arm. The second front side plate of the second end is located in front of the right front vertical arm. In front of the front vertical plate of the arm, the second upper side plate and the second rear side plate of the second end are both located between the front vertical plate and the rear vertical plate of the right front vertical arm. The two ends of the rear lower connecting crossbeam are the third end and the fourth end, respectively. The third end and the fourth end are fixedly connected to the left rear vertical arm and the right rear vertical arm, respectively. The second rear side plate of the third end is located behind the rear vertical plate of the left rear vertical arm. The second upper side plate and the second front side plate of the third end are both located between the front vertical plate and the rear vertical plate of the left rear vertical arm. The second rear side plate of the fourth end is located behind the rear vertical plate of the right rear vertical arm. The second upper side plate and the second front side plate of the fourth end are both located between the front vertical plate and the rear vertical plate of the right rear vertical arm.

7. The modular crossbeam structure for special vehicles according to claim 6, characterized in that: The upper crossarm connecting port has two opposing upper crossarm pin holes, and the lower crossarm connecting port has two opposing lower crossarm pin holes. The front and rear vertical plates within the lower crossarm slot of the left front vertical arm each have a lower crossarm pin hole. The second front side plate at the first end has a through hole corresponding to the lower crossarm pin hole of the front vertical plate of the left front vertical arm, and the second rear side plate at the first end has a through hole corresponding to the lower crossarm pin hole of the rear vertical plate of the left front vertical arm. The front and rear vertical plates within the lower crossarm slot of the right front vertical arm also have lower crossarm pin holes. The second front side plate at the second end has a through hole corresponding to the lower crossarm pin hole of the front vertical plate of the right front vertical arm, and the second rear side plate at the second end has... A through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the right front vertical arm is provided. The front and rear vertical plates in the lower horizontal arm slot of the left rear vertical arm are also provided with lower horizontal arm pin holes. The second front side plate at the third end is provided with a through hole corresponding to the lower horizontal arm pin hole of the front vertical plate of the left rear vertical arm. The second rear side plate at the third end is provided with a through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the left rear vertical arm. The front and rear vertical plates in the lower horizontal arm slot of the right rear vertical arm are also provided with lower horizontal arm pin holes. The second front side plate at the fourth end is provided with a through hole corresponding to the lower horizontal arm pin hole of the front vertical plate of the right rear vertical arm. The second rear side plate at the fourth end is provided with a through hole corresponding to the lower horizontal arm pin hole of the rear vertical plate of the right rear vertical arm.

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