Chassis frame assembly

Abstract

The utility model relates to a chassis frame assembly which comprises a left longitudinal beam, a right longitudinal beam and a first cross beam. A transmission mounting assembly, a fuel tank mounting assembly, a plate spring mounting assembly, a rear axle brake cable mounting assembly and a spare tire mounting assembly are arranged between the left longitudinal beam and the right longitudinal beam; a floor fixing bracket is arranged on the transmission mounting assembly; a portal frame mounting assembly, a urea tank mounting bracket, a vacuum tank bracket, a shock absorber bracket and a clutch hose bracket are arranged on the front side and the bottom of the transmission mounting assembly; the front side and the lower portion of the fuel tank installation assembly are provided with a catalytic silencer support, a transmission shaft installation assembly and a refueling hose connecting frame. A chassis electrical system component connecting piece, an exhaust pipe installation assembly, a breathing hard pipe support and a brake installation support are further arranged on the frame. According to the utility model, the mounting assemblies of the parts of the chassis system are integrally mounted on the frame, so that the mounting positions of the parts are unified, and the mounting space of a vehicle body is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics vehicle chassis, in particular to a chassis frame assembly. Background Art

[0002] In traditional logistics vehicle production, components for the powertrain, power accessories, electrical appliances, and other systems are assembled within the vehicle's body assembly, resulting in a complex vehicle structure. Due to limited underbody space, numerous components must be installed, and different assembly equipment is distributed across different areas, occupying significant space within the vehicle. Furthermore, decentralized assembly can lead to inconsistent assembly precision between components, impacting the vehicle's handling and safety. The limited installation space also makes installation difficult, reducing overall production efficiency. Installing equipment within the vehicle body requires multiple assembly brackets, equipment, and a significant number of operators, increasing production and maintenance costs. Summary of the Invention

[0003] In order to solve the problem that existing logistics vehicles have many parts installed on the bottom of the vehicle body and different equipment are distributed in different areas, which occupies a large vehicle body space, the utility model provides a chassis frame assembly. By integrating the mounting assembly of the chassis system parts on the frame, the installation positions of various parts are unified, and the vehicle body installation space is increased.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0005] A chassis frame assembly includes a left longitudinal beam, a right longitudinal beam, and two cross beams. The left longitudinal beam, right longitudinal beam, and two cross beams are connected to form a rectangular frame structure. The frame structure is provided with a transmission mounting assembly, a fuel tank mounting assembly, a leaf spring mounting assembly, a rear axle brake cable mounting assembly, and a spare tire mounting assembly in order from front to back.

[0006] The front side of the transmission mounting assembly is provided with a driving area gantry mounting assembly; the front side of the driving area gantry mounting assembly is provided with a urea tank mounting bracket and a vacuum tank bracket; the top of the transmission mounting assembly is fixed with a floor fixing bracket; the front pillar mounting assemblies are provided on both sides of the transmission mounting assembly; the bottom of the transmission mounting assembly is provided with a clutch hose bracket;

[0007] A second crossbeam is provided between the transmission mounting assembly and the fuel tank mounting assembly;

[0008] A catalytic muffler bracket is provided between the fuel tank mounting assembly and the second crossbeam; a drive shaft mounting assembly is provided below the fuel tank mounting assembly; a leaf spring mounting assembly and a rear axle brake cable mounting assembly are provided behind the fuel tank mounting assembly; rear axle limit buffer block brackets are provided on both sides of the rear axle brake cable mounting assembly; the spare tire mounting assembly is provided behind the rear axle brake cable mounting assembly; a refueling hose connecting bracket is provided between the leaf spring mounting assembly and the fuel tank mounting assembly;

[0009] The frame structure is also provided with a brake mounting bracket, which includes a front brake pipe bracket and a rear brake hose bracket. The front brake pipe bracket is fixed to the lower outer side of the front strut mounting assembly. The rear brake hose bracket is fixed to the rear side of the rear axle brake cable mounting assembly.

[0010] The inner sides of the left and right longitudinal beams are provided with chassis electrical system component connectors; the right longitudinal beam is also provided with an exhaust pipe mounting assembly; and the middle part of the left longitudinal beam is provided with a breathing tube bracket.

[0011] Furthermore, the transmission mounting assembly includes a support frame, a transmission upper crossbeam and a diagonal brace. The support frame is divided into two groups, and the two groups of support frames are respectively fixed on the left longitudinal beam and the right longitudinal beam; the diagonal brace includes two, and one end of each diagonal brace is fixed on the top of the support frame and the other end is fixed on the left longitudinal beam or the right longitudinal beam; the transmission upper crossbeam is fixed between the two diagonal braces.

[0012] Furthermore, the driving area gantry installation assembly includes a plurality of driving area gantry connecting brackets.

[0013] Furthermore, the front pillar mounting assembly includes two shock absorber supports, and the two shock absorber supports are fixed to the outer sides of both ends of the transmission mounting assembly.

[0014] Furthermore, the fuel tank mounting assembly includes a fuel tank support beam and a fuel tank bracket, the fuel tank support beam is fixed between the left longitudinal beam and the right longitudinal beam; the fuel tank bracket is fixed to the bottom of the second cross beam.

[0015] Furthermore, the transmission shaft mounting assembly includes a first support seat bracket, a second support seat bracket and a protective frame welding bracket; the first support seat bracket is fixed to the middle part of the second rear side surface of the crossbeam, the second support seat bracket is fixed to the lower part of the fuel tank mounting assembly, and one end of the protective frame welding bracket is fixed to the bottom of the fuel tank mounting assembly, and the other end is suspended.

[0016] Furthermore, the leaf spring installation assembly includes two cross beams three, a leaf spring front support and a leaf spring rear support; the two cross beams three are fixed between the left longitudinal beam and the right longitudinal beam; the upper part of the cross beam three is a U-shaped channel steel and the lower part is a round tube; the U-shaped channel steel of the cross beam three is fixed between the left longitudinal beam and the right longitudinal beam, the middle part of the round tube of the cross beam three is arranged between the left longitudinal beam and the right longitudinal beam, and the two ends of the round tube pass through the left longitudinal beam and the right longitudinal beam and are suspended in the air; the leaf spring front support and the leaf spring rear support are respectively fitted on the suspended ends of the round tubes of the two cross beams three.

[0017] Furthermore, the rear axle brake cable installation assembly includes a crossbeam four, a rectangular tube one, a rear axle brake cable front bracket and a rear axle brake cable rear bracket; the crossbeam four is transversely fixed between the left longitudinal beam and the rear part of the right longitudinal beam; the rectangular tube one is longitudinally fixed between the leaf spring installation assembly and the crossbeam four, and the rear axle brake cable front bracket is fixed in the middle of the bottom of the rectangular tube one; the rear axle brake cable rear bracket is fixed at the bottom of the crossbeam four.

[0018] Furthermore, the exhaust pipe mounting assembly includes an exhaust pipe front support, an exhaust pipe rear support and an exhaust tail pipe transition steel plate; the exhaust pipe front support, the exhaust pipe rear support and the exhaust tail pipe transition steel plate are all fixed on the right longitudinal beam; the exhaust pipe front support is arranged at the lower part of the transmission mounting assembly near the second crossbeam; the exhaust pipe rear support is arranged on the front side between the leaf spring mounting assembly and the rear axle brake cable mounting assembly; the exhaust tail pipe transition steel plate is arranged on the rear side between the leaf spring mounting assembly and the rear axle brake cable mounting assembly.

[0019] Furthermore, the spare tire installation assembly includes spare tire hanger 1 and spare tire hanger 2. Spare tire hanger 1 is arranged at the bottom of the rear axle brake cable installation assembly; spare tire hanger 2 is arranged on the rear side of the tail cross beam 1.

[0020] Through the above technical solution, the beneficial effects of the utility model are:

[0021] The utility model provides a urea tank mounting bracket, a vacuum tank bracket, a driving area gantry mounting assembly, a transmission mounting assembly, a floor fixing bracket, a front pillar mounting assembly, a clutch hose bracket, a catalytic muffler bracket, a fuel tank mounting assembly, a drive shaft mounting assembly, a leaf spring mounting assembly, a rear axle brake cable mounting assembly, a rear axle limit buffer block bracket, a refueling hose connecting bracket, a chassis electrical system component connector, a breathing tube bracket, a brake mounting bracket and a spare tire mounting assembly, and other chassis system components. The mounting assemblies are integrated and mounted on the vehicle frame, thereby unifying the mounting positions of various components and increasing the vehicle body installation space.

[0022] The arrangement of the support frame, diagonal braces 1 and 2, and the upper crossbeam of the transmission allows the transmission to be positioned in a manner that conforms to the transmission's design while simultaneously shifting the transmission upwards, creating space for the installation of the engine and other components. The triangular structure formed by the diagonal brace 1, the first and second suspension columns, and the left or right longitudinal beam ensures the stability of the transmission mounting assembly and enhances its structural strength. Furthermore, when the engine and transmission are operating, the structure maintains high stability and minimizes deformation.

[0023] The rectangular structure of the crossbeam three of the utility model is used for bearing, welding and installing components, and the round tube structure of the crossbeam three is used for support, thereby improving the overall strength of the crossbeam three. The structural setting of the crossbeam three simplifies the complex structure of the traditional crossbeam using channel steel, connecting plates and flanges, thereby reducing the weight of the crossbeam three; it meets the requirements of bearing, welding and installation while ensuring the structural strength of the crossbeam three.

[0024] The utility model replaces the traditional casting structure with a leaf spring front support and a leaf spring rear support structure, which is convenient for replacement when the leaf spring structure changes. The leaf spring is connected to the leaf spring mounting assembly by bolting the corresponding ends of the leaf spring to the leaf spring front support and the leaf spring rear support. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a chassis frame assembly of the utility model.

[0026] Figure 2 It is a top view of a chassis frame assembly of the utility model.

[0027] Figure 3 It is a front view of a chassis frame assembly of the utility model.

[0028] Figure 4 This is a chassis frame assembly of the utility model Figure 2 Center A view.

[0029] Figure 5 This is a chassis frame assembly of the utility model Figure 2 Middle BB cross-section view.

[0030] Figure 6 This is a chassis frame assembly of the utility model Figure 2 Middle CC section view.

[0031] Figure 7 This is a chassis frame assembly of the utility model Figure 2 Middle DD cross-sectional view.

[0032] Figure 8 It is a schematic diagram of the bottom structure of a chassis frame assembly of the utility model.

[0033] The reference numerals in the accompanying drawings are:

[0034] 1. Crossbeam 1, 2. Right longitudinal beam, 3. Diagonal brace 2, 4. Transmission upper crossbeam, 5. Reinforced angle 1, 6. Crossbeam 2, 7. Crossbeam 4, 71. Front crossbeam 4, 72. Rear crossbeam 4, 8. Crossbeam 3, 9. Rectangular tube 2, 10. Rectangular tube 1, 11. Left longitudinal beam, 12. Shock absorber support, 13. Leaf spring front support, 14. Leaf spring rear support, 15. Front support beam, 16. Reinforced angle 2, 17. Suspension column 1, 18. Suspension column 2, 19. Diagonal brace 1, 20. Middle support beam, 21. Rear support beam, 22. Urea tank mounting bracket 2, 23. Urea tank mounting bracket 1, 24. Bearing surface projection welding bolt, 25. Floor fixing bracket, 26. Exhaust pipe front support, 27. Catalytic muffler bracket, 28. Fuel tank bracket, 29. First support bracket, 30. Second support bracket , 31. Protection frame welding bracket, 32. Fueling hose connecting bracket, 33. Rear axle brake cable front bracket, 34. Exhaust pipe rear support, 35. Rear axle brake cable rear bracket, 36. Rear axle limit buffer block bracket, 37. Spare tire hanger one, 38. Exhaust tail pipe transition steel plate, 39. Spare tire hanger two, 40. Rear brake hose bracket, 41. Fuel tank mounting beam two, 42. Fuel tank mounting beam one, 43. Breathing hard pipe bracket, 44. Clutch hose bracket, 45. Vacuum tank bracket, 46. Grounding bolt, 47. Front brake hard pipe bracket, 48. Driving area gantry connecting bracket. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings:

[0036] In the present invention, unless otherwise specified, the directional words used, such as "front, rear, up, and down", are defined based on the normal parking state of the vehicle. Specifically, the direction close to the front of the vehicle is front, the direction close to the rear of the vehicle is rear, the direction close to the roof of the vehicle is up, and the direction close to the bottom of the vehicle is down.

[0037] like Figures 1 to 8 The figure shows a chassis frame assembly comprising a left longitudinal beam 11, a right longitudinal beam 2, and two cross beams 1. These beams 1 and 1 are connected to form a rectangular frame structure. The ends of the two cross beams 1 are fixedly connected to the ends of the left and right longitudinal beams 11 and 2, respectively. The subframe, steering system, front suspension, and front axle are bolted or welded to the front ends of the left and right longitudinal beams 11 and 2.

[0038] The frame structure is provided with a transmission mounting assembly, a fuel tank mounting assembly, a leaf spring mounting assembly, a rear axle brake cable mounting assembly and a spare tire mounting assembly in sequence from front to back.

[0039] The transmission mounting assembly includes a support frame, a transmission upper crossbeam 4, and a diagonal brace 19. The support frames are arranged in two sets, one fixed to the left longitudinal beam 11 and the other to the right longitudinal beam 2. Each set includes a suspension column 17 and a second suspension column 18, each of which is a diagonally symmetrical square tube. Suspension columns 17 and 18 are connected at their tops. Two diagonal braces 19 are provided, one end of each being fixed to the top junction of suspension columns 17 and 18, and the other end to the left longitudinal beam 11 or the right longitudinal beam 2. The diagonal brace 19, suspension columns 17, suspension columns 2, and the left longitudinal beam 11 or the right longitudinal beam 2 form a triangular structure. This arrangement enhances the stability and strength of the transmission mounting assembly. The transmission upper crossbeam 4 is a square tube with a raised center and downwardly sloping sides, allowing the transmission upper crossbeam 4 to fit snugly within the transmission, saving space in the vehicle chassis. The transmission upper crossbeam 4 is fixed between two diagonal braces 19. To enhance the stability of the transmission mounting assembly, diagonal braces 2 (3) are attached to both ends of the transmission upper crossbeam 4, along with diagonal braces 19 and suspension columns 17. The structure formed by the support frame, diagonal braces 19, diagonal braces 2 (3), and the transmission upper crossbeam 4 shifts the transmission mounting position upward, providing space for the engine and other components. Furthermore, when the engine and transmission are operating, the structure maintains high stability and minimizes deformation.

[0040] The front of the transmission mounting assembly is equipped with a driver's compartment gantry mounting assembly. This assembly includes multiple driver's compartment gantry connecting brackets 48. Each gantry connecting bracket 48 is an L-shaped connecting plate, facilitating the mounting of the driver's compartment gantry on the driver's compartment gantry connecting bracket 48. A reinforcing rib is fixed to the center of the driver's compartment gantry connecting bracket 48 to enhance its strength. Mounting holes are provided on both sides of the driver's compartment gantry connecting bracket 48. In this embodiment, four driver's compartment gantry connecting brackets 48 are provided, with two fixed to the outside of each of the left longitudinal beam 11 and the right longitudinal beam 2. The driver's compartment gantry is connected to the driver's compartment gantry connecting bracket 48 via bolts.

[0041] A urea tank mounting bracket and a vacuum tank bracket 45 are provided on the front side of the driving area gantry mounting assembly; the urea tank mounting bracket is provided at the front end of the right longitudinal beam 2, and the vacuum tank bracket 45 is fixed to the front end of the left longitudinal beam 11.

[0042] The urea tank mounting bracket includes a first urea tank mounting bracket 23 and a second urea tank mounting bracket 22. Both are secured to the right longitudinal beam 2. The second urea tank mounting bracket 22 is secured to the bottom of the right longitudinal beam 2, while the first urea tank mounting bracket 23 is secured to the outer side of the right longitudinal beam 2. Both the second urea tank mounting bracket 22 and the first urea tank mounting bracket 23 have mounting holes. The urea tank is connected to the corresponding positions of the second urea tank mounting bracket 22 and the first urea tank mounting bracket 23 via bolts and nuts.

[0043] The vacuum tank bracket 45 is fixed to the lower middle part of the outer side surface of the left longitudinal beam 11 , the top of the vacuum tank bracket 45 is fixed to the outer side surface of the left longitudinal beam 11 , and the bottom is suspended in the air. The vacuum tank bracket 45 is fixedly connected to the vacuum tank by bolts and nuts.

[0044] A floor fixing bracket 25 is fixed on the top of the transmission mounting assembly; the floor fixing bracket 25 has the same shape as the driving area gantry connecting bracket 48. In this embodiment, there are four floor fixing brackets 25, and the four floor fixing brackets 25 are fixed in pairs to the outer side surfaces of the two diagonal braces 19, and the four floor fixing brackets 25 are connected to the floor frame with bolts.

[0045] Front strut mounting assemblies are located on either side of the transmission mounting assembly. These front strut mounting assemblies include two shock absorber mounts 12, each secured to the exterior of suspension column 17 and suspension column 2 18. Shock absorbers are located within these mounts and are securely connected to them via bolts.

[0046] A clutch hose bracket 44 is provided at the lower part of the support frame of the transmission mounting assembly. One end of the clutch hose bracket 44 is fixed to the left longitudinal beam 11 and the other end is suspended in the air. A mounting hole is provided at the suspended part of the clutch hose bracket 44, and the clutch hose is installed on the clutch hose bracket 44 by passing bolts and nuts through the mounting hole.

[0047] The fuel tank mounting assembly includes a fuel tank support beam, a fuel tank bracket 28, and a fuel tank attachment beam. The fuel tank support beams include a front support beam 15, a middle support beam 20, and a rear support beam 21, all of which are secured between the left longitudinal beam 11 and the right longitudinal beam 2. The fuel tank attachment beams include a first fuel tank attachment beam 42 and a second fuel tank attachment beam 41. Mounting holes are provided on the front support beam 15, the middle support beam 20, the rear support beam 21, the first fuel tank attachment beam 42, and the second fuel tank attachment beam 41. The first fuel tank attachment beam 42 is longitudinally secured between the front support beam 15 and the middle support beam 20, while the second fuel tank attachment beam 41 is longitudinally secured between the middle support beam 20 and the rear support beam 21. The fuel tank bracket 28 is secured to the bottom of the second crossbeam 6, and bolts are provided at the bottom of the fuel tank bracket 28. The various parts of the fuel tank correspond to the fuel tank mounting assembly respectively, and the fuel tank is fixed to the fuel tank assembly by bolts and cable ties.

[0048] A second crossbeam 6 is provided between the fuel tank mounting assembly and the transmission mounting assembly, and both ends of the second crossbeam 6 are respectively fixed to the inner sides of the left longitudinal beam 11 and the right longitudinal beam 2 .

[0049] Two catalytic muffler brackets 27 are arranged between the fuel tank mounting assembly and the crossbeam 2 6. The two catalytic muffler brackets 27 are symmetrically arranged on the front side of the crossbeam 2 6 and the rear side of the front support beam 15. Both catalytic muffler brackets 27 are provided with mounting holes, and the catalytic muffler is connected to the catalytic muffler bracket 27 by bolts.

[0050] A transmission shaft installation assembly is provided at the lower part of the fuel tank installation assembly. The transmission shaft installation assembly includes a first support seat bracket 29, a second support seat bracket 30 and a protection frame welding bracket 31. The first support seat bracket 29 is fixed to the middle of the rear side surface of the cross beam 26. The first support seat bracket 29 has the same structure as the driving area gantry connection bracket 48. The second support seat bracket 30 is fixed to the middle of the bottom of the middle support beam 20, and a mounting hole is provided at the bottom of the second support seat bracket 30. One end of the protection frame welding bracket 31 is fixed to the bottom of the rear support beam 21, and the other end is suspended. A mounting hole is provided on the suspended end of the protection frame welding bracket 31. The various parts of the transmission shaft are respectively fixed to the first support seat bracket 29, the second support seat bracket 30 and the protection frame welding bracket 31, and then fixed to the transmission shaft installation assembly by bolts.

[0051] A leaf spring mounting assembly is provided on the rear side of the fuel tank mounting assembly, and the leaf spring mounting assembly is provided on the outside of the left longitudinal beam 11 and / or the right longitudinal beam 2. The leaf spring mounting assembly includes two cross beams 3 8, a leaf spring front support 13, and a leaf spring rear support 14. The upper portion of the cross beam 3 8 is a U-shaped channel steel, and the lower portion is a round tube; the U-shaped channel steel of the cross beam 3 8 is fixed between the left longitudinal beam 11 and the right longitudinal beam 2, and the middle portion of the round tube of the cross beam 3 8 is provided between the left longitudinal beam 11 and the right longitudinal beam 2, and the two ends of the round tube pass through the left longitudinal beam 11 and the right longitudinal beam 2 and are suspended in the air. The rectangular structure of the cross beam 3 8 is used for bearing, welding or installing components, and the round tube structure of the cross beam 3 8 is used for support, thereby improving the overall strength of the cross beam 3 8. The structural setting of the cross beam 3 8 simplifies the complex structure of the traditional cross beam using channel steel, connecting plates and flanges, thereby reducing the weight of the cross beam 3 8; while meeting the requirements of bearing, welding and installation, it can also ensure the structural strength of the cross beam 3 8.

[0052] There are two leaf spring front supports 13, each of which fits over the ends of the circular tube of the crossbeam 3 (8) located on the front side. The side where the leaf spring front support 13 connects to the left longitudinal beam 11 or the right longitudinal beam 2 is a hollow body with a right-angled trapezoidal longitudinal cross-section, and the other side is a U-shaped groove with an open, downward-facing opening. The bottom of the leaf spring front support 13 is provided with a waist-shaped hole, and the two side surfaces of the hollow body of the leaf spring front support 13 have mounting holes. The shape of the leaf spring front support 13 facilitates the connection of the front end of the leaf spring to the leaf spring front support 13. There are two leaf spring rear supports 14, each of which fits over the ends of the circular tube of the crossbeam 3 (8) located on the rear side. The side where the leaf spring rear support 14 connects to the left longitudinal beam 11 or the right longitudinal beam 2 is a hollow body with a right-angled trapezoidal longitudinal cross-section. The other side of the leaf spring rear support 14 is a U-shaped structure with an open, forward-facing opening, and two sides are right-angled trapezoidal structures. The shape of the leaf spring rear support 14 facilitates connection between the leaf springs. The front and rear support 13, 14 replace traditional castings, facilitating replacement when the leaf spring structure changes. During installation, the front end of the leaf spring aligns with the front support 13 and the rear end aligns with the rear support 14. Bolts secure the front end to the front support 13 and the rear end to the rear support 14.

[0053] A refueling hose connection bracket 32 ​​is provided between the leaf spring mounting assembly and the fuel tank mounting assembly. The refueling hose connection bracket 32 ​​includes a rectangular tube 29 and four refueling hose connection brackets 32. The rectangular tube 29 is longitudinally fixed between the rear support beam 21 and the crossbeam 3 8 provided on the front side. Two refueling hose connection brackets 32 are fixed to the bottom of the rectangular tube 29, and two refueling hose connection brackets 32 are fixed to the outer side of the left longitudinal beam 11 of the crossbeam 26. The four refueling hose connection brackets 32 are all supported by surface-mounted projection weld bolts. During installation, the refueling hose passes between the rectangular tube 29 and the refueling hose connection bracket 32 ​​on the outer side of the left longitudinal beam 11, and is fixed to the rectangular tube 29 and the left longitudinal beam 11 by bolt and nut connection, welding, etc.

[0054] The rear axle brake cable mounting assembly is disposed between the two crossbeams 3 8 . The rear axle brake cable mounting assembly includes a crossbeam 4 7 , a rectangular tube 10 , a rear axle brake cable front bracket 33 , and a rear axle brake cable rear bracket 35 . The crossbeam 4 7 includes a front crossbeam 4 71 and a rear crossbeam 4 72 . Both the front crossbeam 4 71 and the rear crossbeam 4 72 are transversely fixed between the left longitudinal beam 11 and the right longitudinal beam 2 . The rectangular tube 10 is longitudinally fixed between the crossbeam 3 8 disposed on the front side and the front crossbeam 4 71 . The rear axle brake cable front bracket 33 is fixed to the middle of the bottom of the rectangular tube 10 . A reinforcing rib is fixed to the rear of the rear axle brake cable front bracket 33 , and mounting holes are provided at both ends of the rear axle brake cable front bracket 33 . Two rear axle brake cable rear brackets 35 are fixed to the bottom of the front crossbeam 4 71 , and mounting holes are provided at the bottom of the rear axle brake cable rear brackets 35 . The front end of the rear axle brake cable is connected to the rear axle brake cable front bracket 33 with bolts, and the rear end of the rear axle brake cable is connected to the rear axle brake cable rear bracket 35 with bolts.

[0055] Rear axle limit buffer block brackets 36 are installed on both sides of the rear axle brake cable mounting assembly. The two rear axle limit buffer block brackets 36 are respectively fixed to the outer side surfaces of the left longitudinal beam 11 and the right longitudinal beam 2. The rear axle limit buffer block brackets 36 have the same structure as the driver's area gantry frame connection bracket 48. The rear axle limit buffer block is installed on the rear axle limit buffer block brackets 36 and is fixed to the rear axle limit buffer block brackets 36 by bolts.

[0056] The spare tire mounting assembly is located at the rear of the vehicle frame and includes spare tire hanger 1 37 and spare tire hanger 2 39 . Two spare tire hangers 1 37 are provided, secured to the bottom of rear crossbeam 4 72 . Spare tire hanger 1 37 has mounting holes at its lower portion, and reinforcing ribs are secured at its connection. Spare tire hanger 2 39 is located at the rear of the rectangular frame structure's rear crossbeam 1 1 , with a mounting hole at the rear top of spare tire hanger 2 39 . The spare tire bracket hanger is mounted to spare tire hanger 1 37 via bolts. Spare tire hanger 1 37 and spare tire hanger 2 39 secure the spare tire to the bottom of the vehicle frame via bolts, chains, and the spare tire bracket hanger.

[0057] The frame assembly is also provided with an exhaust pipe mounting assembly. The exhaust pipe mounting assembly includes an exhaust pipe front support 26, an exhaust pipe rear support 34, and an exhaust tail pipe transition steel plate 38. The exhaust pipe front support 26, the exhaust pipe rear support 34, and the exhaust tail pipe transition steel plate 38 are all fixed to the right longitudinal beam 2. The exhaust pipe front support 26 is provided at the lower portion of the transmission mounting assembly near the crossbeam 2 6. One end of the exhaust pipe front support 26 is connected to the right longitudinal beam 2, and the other end is suspended. A waist-shaped hole is provided at the suspended end of the exhaust pipe front support 26. The exhaust pipe rear support 34 is fixed between the crossbeam 3 8 and the front crossbeam 4 71 provided on the front side. The exhaust tail pipe transition steel plate 38 is fixed between the crossbeam 3 8 and the rear crossbeam 4 72 provided on the rear side. When installing the exhaust pipe, the front end of the exhaust pipe is fixed to the exhaust pipe front support 26, the rear side of the exhaust pipe is fixed to the exhaust pipe rear support 34, and the tail end of the exhaust pipe is set on the exhaust pipe transition steel plate 38 and fixed.

[0058] Connectors for chassis electrical components are located on the inner sides of the left and right longitudinal beams 11 and 2. These connectors consist of a plurality of grounding bolts 46 and a plurality of projection welded bolts 24. In this embodiment, there are three grounding bolts 46, which are located behind the transmission upper cross member 4. These grounding bolts 46 are used to connect electrical components located above the transmission. The projection welded bolts 24 are located at the locations where the chassis electrical components are to be installed, facilitating their installation.

[0059] The frame structure is also equipped with brake mounting brackets, which include a front brake pipe bracket 47 and a rear brake hose bracket 40. In this embodiment, two front brake pipe brackets 47 are provided, each secured to the lower outer side of the shock absorber support 12. The front brake pipe is secured to the front brake pipe brackets 47 with bolts. The rear brake hose bracket 40 is secured to the rear side of the front crossbeam 24 71, and the rear brake hose is secured to the rear brake hose brackets 40 with bolts and nuts.

[0060] A breathing tube bracket 43 is provided in the middle of the left longitudinal beam 11 , and bolts are fixed on the breathing tube bracket 43 for connecting the breathing tube.

[0061] To further enhance the structural strength and stability of the frame, reinforcement angles 5 are fixed to the connections between the left longitudinal beam 11 and the second crossbeam 6, the right longitudinal beam 2 and the second crossbeam 6, the left longitudinal beam 11 and the rear support frame, and the right longitudinal beam 2 and the rear support beam 21. A reinforcement angle 16 is fixed to the bottom of the second crossbeam 6 at its connection with the left longitudinal beam 11 and the right longitudinal beam 2 to enhance the frame's load-bearing capacity.

[0062] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A chassis frame assembly, comprising a left longitudinal beam (11), a right longitudinal beam (2) and two cross beams (1); the left longitudinal beam (11), the right longitudinal beam (2) and the two cross beams (1) are connected to form a rectangular frame structure; characterized in that, The frame structure is provided with a transmission mounting assembly, a fuel tank mounting assembly, a leaf spring mounting assembly, a rear axle brake cable mounting assembly and a spare tire mounting assembly in sequence from front to back; A driving area gantry mounting assembly is provided on the front side of the transmission mounting assembly; a urea tank mounting bracket and a vacuum tank bracket (45) are provided on the front side of the driving area gantry mounting assembly; a floor fixing bracket (25) is fixed on the top of the transmission mounting assembly; front pillar mounting assemblies are provided on both sides of the transmission mounting assembly; a clutch hose bracket (44) is provided on the bottom of the transmission mounting assembly; A second crossbeam (6) is provided between the transmission mounting assembly and the fuel tank mounting assembly; A catalytic muffler bracket (27) is provided between the fuel tank mounting assembly and the second crossbeam (6); a transmission shaft mounting assembly is provided at the lower portion of the fuel tank mounting assembly; a leaf spring mounting assembly and a rear axle brake cable mounting assembly are provided at the rear side of the fuel tank mounting assembly; rear axle limit buffer block brackets (36) are provided on both sides of the rear axle brake cable mounting assembly; the spare tire mounting assembly is provided at the rear side of the rear axle brake cable mounting assembly; a refueling hose connecting frame (32) is provided between the leaf spring mounting assembly and the fuel tank mounting assembly; The frame structure is also provided with a brake mounting bracket, which includes a front brake hard pipe bracket (47) and a rear brake hose bracket (40); the front brake hard pipe bracket (47) is fixed to the lower part of the front pillar mounting assembly, and the rear brake hose bracket (40) is fixed to the bottom of the rear axle brake cable mounting assembly; Chassis electrical system component connectors are provided on the inner sides of the left longitudinal beam (11) and the right longitudinal beam (2); an exhaust pipe mounting assembly is also provided on the right longitudinal beam (2); and a breathing tube bracket (43) is provided in the middle of the left longitudinal beam (11).

2. The chassis frame assembly according to claim 1, characterized in that: The transmission mounting assembly includes a support frame, a transmission upper cross beam (4) and a diagonal brace (19), wherein the support frame is in two groups, and the two groups of support frames are fixed on the left longitudinal beam (11) and the right longitudinal beam (2) respectively; the diagonal brace (19) includes two, and one end of each diagonal brace (19) is fixed on the top of the support frame and the other end is fixed on the left longitudinal beam (11) or the right longitudinal beam (2); the transmission upper cross beam (4) is fixed between the two diagonal braces (19).

3. The chassis frame assembly according to claim 1, characterized in that: The driving area gantry installation assembly includes a plurality of driving area gantry connecting brackets (48).

4. The chassis frame assembly according to claim 1, characterized in that: The front support mounting assembly comprises two shock absorber supports (12), and the two shock absorber supports (12) are fixed to the outer sides of both ends of the transmission mounting assembly.

5. The chassis frame assembly according to claim 1, characterized in that: The fuel tank mounting assembly comprises a fuel tank support beam and a fuel tank bracket (28), wherein the fuel tank support beam is fixed between the left longitudinal beam (11) and the right longitudinal beam (2); and the fuel tank bracket (28) is fixed to the bottom of the second cross beam (6).

6. The chassis frame assembly according to claim 1, characterized in that: The transmission shaft mounting assembly comprises a first support seat bracket (29), a second support seat bracket (30) and a protection frame welding bracket (31); the first support seat bracket (29) is fixed to the middle portion of the rear side surface of the second crossbeam (6), and the second support seat bracket (30) is fixed to the lower portion of the fuel tank mounting assembly; one end of the protection frame welding bracket (31) is fixed to the bottom of the fuel tank mounting assembly, and the other end is suspended.

7. The chassis frame assembly according to claim 1, characterized in that: The leaf spring installation assembly includes two cross beams (8), a leaf spring front support (13) and a leaf spring rear support (14); the two cross beams (8) are fixed between the left longitudinal beam (11) and the right longitudinal beam (2); the upper part of the cross beam (8) is a U-shaped channel steel and the lower part is a round tube; the U-shaped channel steel of the cross beam (8) is fixed between the left longitudinal beam (11) and the right longitudinal beam (2), the middle part of the round tube of the cross beam (8) is arranged between the left longitudinal beam (11) and the right longitudinal beam (2), and the two ends of the round tube pass through the left longitudinal beam (11) and the right longitudinal beam (2) and are suspended; the leaf spring front support (13) and the leaf spring rear support (14) are respectively fitted on the suspended ends of the round tubes of the two cross beams (8).

8. The chassis frame assembly according to claim 1, characterized in that: The rear axle brake cable mounting assembly comprises a crossbeam four (7), a rectangular tube one (10), a rear axle brake cable front bracket (33) and a rear axle brake cable rear bracket (35); the crossbeam four (7) is transversely fixed between the left longitudinal beam (11) and the rear portion of the right longitudinal beam (2); the rectangular tube one (10) is longitudinally fixed between the leaf spring mounting assembly and the crossbeam four (7); the rear axle brake cable front bracket (33) is fixed in the middle of the bottom of the rectangular tube one (10), and the rear axle brake cable rear bracket (35) is fixed at the bottom of the crossbeam four (7).

9. The chassis frame assembly according to claim 1, characterized in that: The exhaust pipe mounting assembly includes an exhaust pipe front support (26), an exhaust pipe rear support (34) and an exhaust tail pipe transition steel plate (38); the exhaust pipe front support (26), the exhaust pipe rear support (34) and the exhaust tail pipe transition steel plate (38) are all fixed on the right longitudinal beam (2); the exhaust pipe front support (26) is arranged at the lower part of the transmission mounting assembly near the second crossbeam (6); the exhaust pipe rear support (34) is arranged at the front side between the leaf spring mounting assembly and the rear axle brake cable mounting assembly; the exhaust tail pipe transition steel plate (38) is arranged at the rear side between the leaf spring mounting assembly and the rear axle brake cable mounting assembly.

10. The chassis frame assembly according to claim 1, characterized in that: The spare tire installation assembly comprises a spare tire hanger 1 (37) and a spare tire hanger 2 (39), wherein the spare tire hanger 1 (37) is arranged at the bottom of the rear axle brake cable installation assembly; and the spare tire hanger 2 (39) is arranged at the rear side of the tail crossbeam 1 (1).

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