A cab suspension device and vehicle thereof

Abstract

The present application relates to a cab suspension device and a vehicle thereof, comprising: a rear suspension unit, the rear suspension unit comprising a rear suspension upper bracket assembly and a rear suspension lower bracket assembly, the rear suspension upper bracket assembly being used to be fixed to the vehicle body, and the rear suspension lower bracket assembly being used to be fixed to the vehicle frame; the rear suspension upper bracket assembly comprising a sleeve assembly, and the rear suspension lower bracket assembly comprising a latch assembly; wherein, when the cab is flipped, the sleeve assembly is located above the latch assembly, and after the cab is lowered, the sleeve assembly is locked within the latch assembly. In the present invention, by providing the sleeve assembly on the rear suspension upper bracket assembly and matching the latch assembly, the sleeve assembly can be tightly locked during normal vehicle driving with the cab lowered, preventing the rear suspension upper bracket assembly and the rear suspension lower bracket assembly from frequently moving relative to each other on bumpy roads, thereby greatly improving the driving comfort of the driver and passengers.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a cab suspension device and a vehicle thereof. Background Art

[0002] For the overseas right-hand drive car market, taking into account the regulations of the right-hand drive car market, the road conditions in which vehicles travel, the driving habits of local drivers, etc., targeted adaptive development is needed to meet the usage needs of the right-hand drive car market.

[0003] Due to driving habits, human-machine factors and other reasons, as the cab changes accordingly, the current cab suspension cannot meet the requirements; when the vehicle travels on bumpy roads, the pin shaft of the rear suspension upper bracket will frequently hit the hydraulic lock body and lock hook, thereby generating abnormal noise. In view of the widespread problem of abnormal noise in the cab rear suspension in the current industry, in order to ensure the good reputation of domestic brands overseas and foreigners have a good impression of China's scientific and technological level, it is necessary to develop a cab suspension device to solve this problem. Summary of the Invention

[0004] The present application provides a cab suspension device and a vehicle thereof, which can solve the problem in the related art that when the vehicle travels on a bumpy road, the pin shaft of the rear suspension upper bracket frequently hits the hydraulic lock body and the lock hook, thereby generating abnormal noise.

[0005] In a first aspect, an embodiment of the present application provides a cab suspension device, comprising: a rear suspension unit, the rear suspension unit comprising a rear suspension upper bracket assembly and a rear suspension lower bracket assembly, the rear suspension upper bracket assembly being used to be fixed to a vehicle body, and the rear suspension lower bracket assembly being used to be fixed to a vehicle frame; the rear suspension upper bracket assembly comprising a sleeve assembly, and the rear suspension lower bracket assembly comprising a bolt assembly; wherein, when the cab is flipped over, the sleeve assembly is located above the bolt assembly, and after the cab falls, the sleeve assembly is locked inside the bolt assembly.

[0006] In some embodiments, the cab suspension device also includes a front suspension unit, which includes a front suspension upper bracket and a connecting block, and the front suspension upper bracket is used to connect to the floor longitudinal beam mounting groove through the connecting block; wherein, the connecting block includes a first connecting plate, a second connecting plate and a transition plate, the first connecting plate is connected to the front suspension upper bracket, the second connecting plate is used to connect to the floor longitudinal beam mounting groove, and the transition plate is obliquely arranged between the first connecting plate and the second connecting plate so that the first connecting plate and the second connecting plate are staggered.

[0007] In some embodiments, the sleeve assembly includes: a connecting rod and a guide tube. After the cab is lowered, the connecting rod is locked inside the lock bolt assembly; the guide tube is arranged at both ends of the connecting rod, and the diameter of the guide tube is larger than the diameter of the connecting rod.

[0008] In some embodiments, the connecting rod includes: an inner sleeve and an outer sleeve, the outer sleeve is sleeved on the surface of the inner sleeve, and rubber is provided between the outer sleeve and the inner sleeve.

[0009] In some embodiments, the lock bolt assembly is provided with a locking groove and a locking hook, and the locking hook is rotatably connected to the lock bolt assembly; after the cab is lowered, one end of the locking hook is rotated into the locking groove to lock the sleeve assembly inside the locking groove.

[0010] In some embodiments, the rear suspension upper bracket assembly includes: a frame body and an upper bracket rear mounting panel, wherein the upper bracket rear mounting panel is fixed to one side of the frame body; and the sleeve assembly is arranged between the frame body and the upper bracket rear mounting panel.

[0011] In some embodiments, the frame includes: an upper bracket top plate, an upper bracket front plate and an upper bracket rear plate, the upper bracket top plate is used to be fixed to the vehicle body; the upper bracket front plate is fixed to one side of the upper bracket top plate, and one end of the sleeve assembly is connected to the upper bracket front plate; the upper bracket rear plate is fixed to the other side of the upper bracket top plate, and the surface of the upper bracket rear plate is fixed to the upper bracket rear mounting panel.

[0012] In some embodiments, the rear suspension upper bracket assembly further includes: an upper bracket limiting plate, which is fixed between the frame body and the upper bracket rear enclosure mounting panel and is located above the sleeve assembly.

[0013] In some embodiments, the rear suspension lower bracket assembly includes: two rear suspension lower bracket bodies, a shock absorber and a height valve assembly, the locking bolt assembly is fixed to the top end of the rear suspension lower bracket body, and a pad is provided between the locking bolt assembly and the rear suspension lower bracket body; each of the rear suspension lower bracket bodies is provided with a shock absorber, and the shock absorber is fixed between the locking bolt assembly and the rear suspension lower bracket body; the height valve assembly is fixed on one of the rear suspension lower bracket bodies, the height valve assembly includes a height valve body fixed on one of the rear suspension lower bracket bodies, a connecting rod and an air pipe, one end of the connecting rod is connected to the locking bolt assembly, and the other end is connected to the height valve body, the air pipe is connected between the two shock absorbers, and the height valve body interface is connected to the air pipe.

[0014] In a second aspect, an embodiment of the present application provides a car, comprising: the cab suspension device as described above.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0016] An embodiment of the present application provides a cab suspension device and a vehicle thereof. By arranging a sleeve assembly on the rear suspension upper bracket assembly and matching it with a corresponding lock bolt assembly, the sleeve assembly can be tightly locked during normal driving of the vehicle with the cab lowered, preventing the rear suspension upper bracket assembly and the rear suspension lower bracket assembly from frequently moving relative to each other on bumpy roads, thereby preventing abnormal noise, thereby greatly improving the driving comfort of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A comparison diagram of the front suspension unit provided in an embodiment of the present application on a left-hand vehicle and a right-hand vehicle;

[0019] Figure 2 A schematic diagram of a rear suspension unit provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of a rear suspension lower bracket assembly provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the rear suspension lower bracket body and the lock bolt assembly provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of a lock bolt assembly provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of a rear suspension upper bracket assembly provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of a sleeve provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of a sleeve provided in an embodiment of the present application;

[0026] Figure 9 A schematic diagram of the position of the lock bolt assembly and sleeve when the cab is flipped over according to an embodiment of the present application;

[0027] Figure 10 Schematic diagram of the position of the lock bolt assembly and sleeve when the cab is lowered, provided in an embodiment of the present application.

[0028] In the figure: 1. Front suspension unit; 10. Front suspension upper bracket; 11. Connecting block; 12. Floor longitudinal beam mounting slot;

[0029] 2. Rear suspension unit; 20. Rear suspension upper bracket assembly; 200. Upper bracket top plate; 201. Upper bracket front plate; 202. Upper bracket rear plate; 203. Upper bracket rear panel mounting panel; 204. Upper bracket limit plate; 205. Sleeve assembly; 2050. Inner sleeve; 2051. Rubber; 2052. Outer sleeve; 2053. Guide tube; 206. Pin; 207. Nut; 21. Rear suspension lower bracket assembly; 210. Rear suspension lower bracket body; 211. Lock bolt assembly; 2110. Locking groove; 2111. Lock hook; 212. Shock absorber; 213. Height valve body; 214. Connecting rod; 215. Air pipe; 216. Joint; 217. Pad. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See also Figures 1 to 10 The embodiment of the present application provides a cab suspension device and a vehicle thereof, which can solve the problem in the related art that when the vehicle travels on a bumpy road, the pin shaft of the rear suspension upper bracket frequently hits the hydraulic lock body and the lock hook, thereby generating abnormal noise.

[0032] In the first aspect, an embodiment of the present application provides a cab suspension device, which includes: a rear suspension unit 2, the rear suspension unit 2 includes a rear suspension upper bracket assembly 20 and a rear suspension lower bracket assembly 21, the rear suspension upper bracket assembly 20 is used to be fixed on the vehicle body, and the rear suspension lower bracket assembly 21 is used to be fixed on the vehicle frame; the rear suspension upper bracket assembly 20 includes a sleeve assembly 205, and the rear suspension lower bracket assembly 21 includes a lock bolt assembly 211; wherein, when the cab is flipped over, the sleeve assembly 205 is located above the lock bolt assembly 211, and after the cab falls, the sleeve assembly 205 is locked inside the lock bolt assembly 211.

[0033] In the present application, by setting a sleeve assembly 205 on the rear suspension upper bracket assembly 20 and matching it with a lock bolt assembly 211, the sleeve assembly 205 can be tightly locked during normal driving of the vehicle with the cab lowered, preventing the rear suspension upper bracket assembly 20 and the rear suspension lower bracket assembly 21 from frequently moving relative to each other on bumpy roads, thereby preventing abnormal noise, thereby greatly improving the comfort of the driver and passengers during driving.

[0034] In the present application, the size of the sleeve assembly 205 is set to correspond to the size of the corresponding clamping part on the lock bolt assembly 211. When the sleeve assembly 205 is locked inside the lock bolt assembly 211, the sleeve assembly 205 is prevented from shaking in the lock bolt.

[0035] On the basis of the above embodiment, in this embodiment, the rear suspension lower bracket assembly 21 includes: two rear suspension lower bracket bodies 210, a shock absorber 212 and a height valve assembly.

[0036] Among them, the lock bolt assembly 211 is fixed to the top of the rear suspension lower bracket body 210, and a pad 217 is arranged between the lock bolt assembly 211 and the rear suspension lower bracket body 210; each rear suspension lower bracket body 210 is provided with a shock absorber 212, and the shock absorber 212 is fixed between the lock bolt assembly 211 and the rear suspension lower bracket body 210; the height valve assembly is fixed on one of the rear suspension lower bracket bodies 210, and the height valve assembly includes a height valve body 213 fixed on one of the rear suspension lower bracket bodies 210, a connecting rod 214 and an air pipe 215, one end of the connecting rod 214 is connected to the lock bolt assembly 211, and the other end is connected to the height valve body 213, the air pipe 215 is connected between the two shock absorbers 212, and the interface of the height valve body 213 is connected to the air pipe 215.

[0037] Specifically, the rear suspension lower bracket body 210 is a casting structure, the top end of which is connected to the lock bolt assembly 211 through bolts and nuts 207, and the bottom end of the rear suspension lower bracket body 210 is installed on the vehicle frame. Figure 4 As shown, a pad 217 is provided between the latch assembly 211 and the rear suspension lower bracket body 210 to enhance connection stability and reduce wear caused by direct contact. Pad 217 is typically made of an elastic material, such as rubber 2051, polyurethane, or 1,5-naphthalene diisocyanate. These materials have excellent cushioning and shock-absorbing properties, effectively absorbing and dissipating energy generated by vibration or impact between the latch assembly 211 and the rear suspension lower bracket body 210, thereby reducing noise and vibration and improving ride comfort. In this application, 1,5-naphthalene diisocyanate (1,5-Nphthalene Diisocyanate) is preferably used to make pad 217. 1,5-Naphthalene Diisocyanate is an organic compound belonging to the isocyanate family. It has a rigid aromatic naphthalene ring structure and a high melting point. It has a molecular weight of 210 and an -NCO content of 40%. Its appearance is a white to light yellow flaky crystalline solid. The products and elastomers made from it have the characteristics of excellent resilience, low damping force, high tear strength, and low wear. It can be used in high dynamic load and heat-resistant occasions. Therefore, the pad 217 made from it has better strength, hardness and wear resistance, as well as higher heat resistance and better dimensional stability.

[0038] In addition, the presence of the pad 217 can reduce the direct contact between the lock bolt assembly 211 and the rear suspension lower bracket body 210, thereby preventing component damage due to friction and wear. This protective effect helps to extend the service life of the components and reduce the cost of repair and replacement; at the same time, the pad 217 can adjust the gap between the lock bolt assembly 211 and the rear suspension lower bracket body 210 as needed to ensure a close fit between them. This adjustment function helps to ensure the stability and reliability of the connection and prevent loosening or failure due to excessive gap. Although the pad 217 itself may not be the main contributor to structural strength, it can indirectly improve the connection strength between the lock bolt assembly 211 and the rear suspension lower bracket body 210 by providing additional support and stability, which helps to ensure the safety and reliability of the vehicle under various working conditions.

[0039] Furthermore, the top of the shock absorber 212 is securely connected to the latch assembly 211 via bolts and matching nuts 207, ensuring a tight and reliable connection. The bottom of the shock absorber 212 is similarly assembled to the rear suspension lower bracket body 210 using high-strength bolts and wear-resistant nuts 207 to ensure structural stability and durability. In this application, to optimize the performance of the device, the shock absorber 212 is designed to be tilted to accommodate varying suspension angles and vehicle posture requirements, thereby enhancing vehicle stability and handling.

[0040] Furthermore, in the height valve assembly, the height valve body 213 is fixed to the rear suspension lower bracket body 210 through a bracket, and only one height valve body 213 is set on the two rear suspension lower bracket bodies 210. One end of the connecting rod 214 is fixed to the lock bolt assembly 211, and the other end is connected to the height valve body 213; the height valve body 213 has two interfaces, one of which is connected to the chassis air source for air supply, and the other interface is connected to the shock absorber 212 on the two rear suspension lower bracket bodies 210 through the air pipe 215 and the 12-T three-way quick-connect pipe connector 216.

[0041] Based on the above embodiment, in this embodiment, a locking groove 2110 and a locking hook 2111 are provided on the locking bolt assembly 211, and the locking hook 2111 is rotatably connected to the locking bolt assembly 211; after the cab is lowered, one end of the locking hook 2111 is rotated to the inside of the locking groove 2110 to lock the sleeve assembly 205 inside the locking groove 2110.

[0042] Specifically, the lock hook 2111 includes a driven lock hook and an active lock hook. The hydraulic lock oil pipe joint 216 of the lock bolt assembly 211 is connected to the lifting oil pipe to ensure the smooth flow of hydraulic oil. When the cab needs to be flipped up, the lifting system begins to work, and it transports the hydraulic oil to the lock bolt assembly 211 through the oil pipe. In this process, the hydraulic oil acts as a power medium, transmitting the force required by the lifting system. At this time, the internal structure of the lock bolt assembly 211 begins to work, and the hydraulic oil drives the internal mechanism to operate, which will steadily lift the driven lock hook. As the driven lock hook rises, the active lock hook also opens accordingly, so that the sleeve assembly 205 on the rear suspension upper bracket assembly 20 can smoothly detach from the lock bolt assembly 211, thereby realizing the flipping function of the cab. At the same time, by precisely controlling the rotation of the driven lock hook by lifting hydraulic oil, the locking between the lock bolt assembly 211 and the sleeve assembly 205 can be further achieved. The movement of the driven lock hook drives the rotation of the active lock hook, and a close cooperative relationship is formed between the two, which can ensure that the lock bolt assembly 211 and the sleeve assembly 205 can be firmly locked together when needed.

[0043] Based on the above embodiment, in this embodiment, the sleeve assembly 205 includes: a connecting rod and a guide tube 2053. After the cab is lowered, the connecting rod is locked inside the lock bolt assembly 211; the guide tube 2053 is arranged at both ends of the connecting rod, and the diameter of the guide tube 2053 is larger than the diameter of the connecting rod.

[0044] Specifically, the guide tube 2053 is provided with a conical structure, aiming to optimize the falling process of the cab. Specifically, large-angle conical guide tubes 2053 are used at both ends of the sleeve assembly 205, which play a vital guiding auxiliary function when the cab falls. The inclined design of the conical guide tube 2053 can guide the cab to enter the locking position smoothly and accurately, effectively preventing the cab from being offset or not centered during the locking process. In this way, not only the potential safety hazards caused by the crooked posture of the cab are avoided, but also the various adverse effects caused by improper locking, such as wear of parts and increased noise, are significantly reduced. Overall, this conical guide tube 2053 design greatly improves the safety performance of the cab and the entire vehicle, ensuring the stability and reliability of the cab.

[0045] Furthermore, the connecting rod includes: an inner sleeve 2050 and an outer sleeve 2052. The outer sleeve 2052 is sleeved on the surface of the inner sleeve 2050, and rubber 2051 is provided between the outer sleeve 2052 and the inner sleeve 2050. Among them, when selecting the material of the hollow inner sleeve 2050, priority can be given to using 20# steel that has both strength and toughness to ensure its structural stability and durability. On the outside of the inner sleeve 2050, a layer of rubber 2051 is tightly wrapped using vulcanization technology. The material of this layer of rubber 2051 is high-performance EQC-260, which has good wear resistance, aging resistance and sealing. The outer side of the rubber 2051 is the outer sleeve 2052, and the material of the outer sleeve 2052 is the higher-strength 40Cr alloy steel. This material combination not only improves the overall strength of the sleeve assembly 205, but also ensures its durability in complex environments. The outer sleeve 2052 and inner sleeve 2050 are tightly connected via sophisticated vulcanization bonding technology, forming a stable and reliable connection. Furthermore, tapered guide tubes 2053 are mounted on each end of the sleeve assembly 205. These guide tubes are made of PA66 and fiberglass, a composite material that not only offers excellent wear resistance and strength but also provides precise guidance during vehicle movement. The interior of the sleeve assembly 205 utilizes a multi-layer vulcanized connection structure, particularly the internal vulcanized rubber layer, which effectively isolates the vehicle from external shock and vibration, thereby ensuring greater vehicle stability during driving and significantly enhancing driving comfort.

[0046] Based on the above embodiment, in this embodiment, the rear suspension upper bracket assembly 20 includes: a frame body, an upper bracket rear mounting panel 203, and the upper bracket rear mounting panel 203 is fixed to one side of the frame body; and a sleeve assembly 205 is arranged between the frame body and the upper bracket rear mounting panel 203.

[0047] Among them, the frame includes: an upper bracket top plate 200, an upper bracket front plate 201 and an upper bracket rear plate 202, the upper bracket top plate 200 is used to be fixed to the vehicle body; the upper bracket front plate 201 is fixed to one side of the upper bracket top plate 200, and one end of the sleeve assembly 205 is connected to the upper bracket front plate 201; the upper bracket rear plate 202 is fixed to the other side of the upper bracket top plate 200, and the surface of the upper bracket rear plate 202 is fixed to the upper bracket rear mounting panel 203.

[0048] The upper bracket top plate 200, upper bracket front plate 201, upper bracket rear plate 202, and upper bracket rear mounting panel 203 are integrally formed. Furthermore, the rear suspension upper bracket assembly 20 also includes an upper bracket stop plate 204, which is secured between the bracket body and the upper bracket rear mounting panel 203 and positioned above the sleeve assembly 205. These key components, including the upper bracket front plate 201, upper bracket rear plate 202, upper bracket rear mounting panel 203, and upper bracket stop plate 204, are manufactured through a precise stamping and welding process and together constitute the rear suspension upper bracket assembly 20. During this manufacturing process, each component undergoes rigorous dimensional control and quality inspection to ensure the accuracy and reliability of the final assembly.

[0049] The upper bracket top plate 200 and the upper bracket rear mounting panel 203 are provided with bracket mounting holes. These holes are not only rationally designed but also precisely dimensioned, and are used to securely fasten the rear suspension upper bracket assembly 20 to the vehicle body. These mounting holes allow bolts or other fasteners to be conveniently connected to the vehicle body, ensuring the stability and safety of the entire structure.

[0050] When assembling the bushing assembly 205 onto the rear suspension upper bracket assembly 20, fasteners such as a pin 206 and a nut 207 are typically used. It's important to note that before assembling the bushing assembly 205, a layer of butter must be evenly applied to the inner wall and tapered surface of the bushing assembly 205. The butter plays a crucial role in lubrication, effectively reducing friction and wear during assembly and use, thereby extending its service life and improving overall operating efficiency.

[0051] On the basis of the above embodiment, in this embodiment, the cab suspension device also includes a front suspension unit 1, the front suspension unit 1 includes a front upper bracket and a connecting block 11, the front upper bracket is used to be connected to the floor longitudinal beam mounting groove 12 through the connecting block 11; wherein, the connecting block 11 includes a first connecting plate, a second connecting plate and a transition plate, the first connecting plate is connected to the front upper bracket, the second connecting plate is used to be connected to the floor longitudinal beam mounting groove 12, and the transition plate is obliquely arranged between the first connecting plate and the second connecting plate so that the first connecting plate and the second connecting plate are staggered.

[0052] The connecting block 11 is in a "Z" shape.

[0053] Specifically, the existing technical solution has a front suspension upper bracket of a stamped and welded structure, which includes a front panel mounting panel, a floor longitudinal beam mounting groove 12, a tilt axis and a straight plate connecting block 11; because it is installed on the front panel of the cab and the floor longitudinal beam, it is affected by the span of the longitudinal beam and can only be used for a single cab. For a cab with a narrowed longitudinal beam, a new matching design is required.

[0054] See also Figure 1 As shown, X1 is the domestic longitudinal beam span, and X2 is the overseas longitudinal beam span, and X2 is significantly smaller than X1. In this application, the "Z"-shaped connecting block 11 connecting the front upper bracket front panel and the floor longitudinal beam mounting groove 12 is symmetrical in the left and right front upper brackets. By exchanging the "Z"-shaped connecting block 11 in the left front upper bracket with the "Z"-shaped connecting block 11 in the right front upper bracket in this solution, a new cab suspension device is generated, which can be replaced with the existing solution without the need to open a new mold. A modular cab suspension device is completed, which can meet the needs of the domestic and overseas left-hand vehicle markets and can also be used in the overseas right-hand vehicle market, realizing modular development and completing the universalization of modules for the domestic and overseas left-hand and right-hand vehicle markets, with the characteristics of universalization and economy.

[0055] In a second aspect, an embodiment of the present application provides a car, which includes the cab suspension device provided by any of the above embodiments of the present application.

[0056] In the present application, by setting a sleeve assembly 205 on the rear suspension upper bracket assembly 20 and matching it with a lock bolt assembly 211, the sleeve assembly 205 can be tightly locked during normal driving of the vehicle with the cab lowered, preventing the rear suspension upper bracket assembly 20 and the rear suspension lower bracket assembly 21 from frequently moving relative to each other on bumpy roads, thereby preventing abnormal noise, thereby greatly improving the comfort of the driver and passengers during driving.

[0057] In some embodiments, the cab suspension device includes: a rear suspension unit 2, the rear suspension unit 2 includes a rear suspension upper bracket assembly 20 and a rear suspension lower bracket assembly 21, the rear suspension upper bracket assembly 20 is used to be fixed on the vehicle body, and the rear suspension lower bracket assembly 21 is used to be fixed on the vehicle frame; the rear suspension upper bracket assembly 20 includes a sleeve assembly 205, and the rear suspension lower bracket assembly 21 includes a bolt assembly 211; wherein, when the cab is flipped, the sleeve assembly 205 is located above the bolt assembly 211, and after the cab falls, the sleeve assembly 205 is locked inside the bolt assembly 211.

[0058] In some embodiments, the cab suspension device further includes a front suspension unit 1, wherein the front suspension unit 1 includes a front suspension upper bracket 10 and a connecting block 11, wherein the front suspension upper bracket 10 is configured to be connected to a floor longitudinal beam mounting groove 12 via the connecting block 11;

[0059] Among them, the connecting block 11 includes a first connecting plate, a second connecting plate and a transition plate, the first connecting plate is connected to the front suspension upper bracket 10, the second connecting plate is used to connect to the floor longitudinal beam mounting groove 12, and the transition plate is obliquely arranged between the first connecting plate and the second connecting plate so that the first connecting plate and the second connecting plate are staggered.

[0060] In some embodiments, the sleeve assembly 205 includes: a connecting rod and a guide tube 2053. After the cab is lowered, the connecting rod is locked inside the lock bolt assembly 211; the guide tube 2053 is arranged at both ends of the connecting rod, and the diameter of the guide tube 2053 is larger than the diameter of the connecting rod.

[0061] In some embodiments, the connecting rod includes: an inner sleeve 2050 and an outer sleeve 2052 , the outer sleeve 2052 is sleeved on the surface of the inner sleeve 2050 , and a rubber 2051 is provided between the outer sleeve 2052 and the inner sleeve 2050 .

[0062] In some embodiments, the lock bolt assembly 211 is provided with a locking groove 2110 and a lock hook 2111 , and the lock hook 2111 is rotatably connected to the lock bolt assembly 211 ;

[0063] After the cab is lowered, one end of the locking hook 2111 rotates to the inside of the locking groove 2110 so that the sleeve assembly 205 is locked inside the locking groove 2110.

[0064] In some embodiments, the rear suspension upper bracket assembly 20 includes: a frame body and an upper bracket rear mounting panel 203, wherein the upper bracket rear mounting panel 203 is fixed to one side of the frame body; and the sleeve assembly 205 is arranged between the frame body and the upper bracket rear mounting panel 203.

[0065] In some embodiments, the frame includes: an upper bracket top plate 200, an upper bracket front plate 201, and an upper bracket rear plate 202, wherein the upper bracket top plate 200 is used to be fixed to the vehicle body; the upper bracket front plate 201 is fixed to one side of the upper bracket top plate 200, and one end of the sleeve assembly 205 is connected to the upper bracket front plate 201;

[0066] The upper bracket rear plate 202 is fixed to the other side of the upper bracket top plate 200 , and the surface of the upper bracket rear plate 202 is fixed to the upper bracket rear enclosure mounting panel 203 .

[0067] In some embodiments, the rear suspension upper bracket assembly 20 further includes: an upper bracket limiting plate 204 , which is fixed between the frame body and the upper bracket rear enclosure mounting panel 203 and is located above the sleeve assembly 205 .

[0068] In some embodiments, the rear suspension lower bracket assembly 21 includes: two rear suspension lower bracket bodies 210, a shock absorber 212 and a height valve assembly, the locking bolt assembly 211 is fixed to the top of the rear suspension lower bracket body 210, and a pad 217 is provided between the locking bolt assembly 211 and the rear suspension lower bracket body 210; each of the rear suspension lower bracket bodies 210 is provided with a shock absorber 212, and the shock absorber 212 is fixed to the locking bolt assembly 211 and the rear suspension lower bracket body 210; the height valve assembly is fixed on one of the rear suspension lower bracket bodies 210, and the height valve assembly includes a height valve body 213 fixed on one of the rear suspension lower bracket bodies 210, a connecting rod 214 and an air pipe 215, one end of the connecting rod 214 is connected to the lock bolt assembly 211, and the other end is connected to the height valve body 213, the air pipe 215 is connected between the two shock absorbers 212, and the interface of the height valve body 213 is connected to the air pipe 215.

[0069] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0070] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0071] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A cab suspension device, characterized in that: It includes: A rear suspension unit (2), the rear suspension unit (2) comprising a rear suspension upper bracket assembly (20) and a rear suspension lower bracket assembly (21), the rear suspension upper bracket assembly (20) being used to be fixed to the vehicle body, and the rear suspension lower bracket assembly (21) being used to be fixed to the vehicle frame; The rear suspension upper bracket assembly (20) includes a sleeve assembly (205), and the rear suspension lower bracket assembly (21) includes a locking bolt assembly (211); When the cab is flipped over, the sleeve assembly (205) is located above the lock bolt assembly (211); after the cab is lowered, the sleeve assembly (205) is locked inside the lock bolt assembly (211); The cab suspension device further comprises a front suspension unit (1), the front suspension unit (1) comprising a front suspension upper bracket (10) and a connecting block (11), the front suspension upper bracket (10) being used to be connected to the floor longitudinal beam mounting groove (12) via the connecting block (11); The connecting block (11) comprises a first connecting plate, a second connecting plate and a transition plate, the first connecting plate being connected to the front suspension upper bracket (10), the second connecting plate being used to connect to the floor longitudinal beam mounting groove (12), and the transition plate being obliquely arranged between the first connecting plate and the second connecting plate so that the first connecting plate and the second connecting plate are staggered; The front suspension upper bracket (10) comprises a left front upper bracket and a right front upper bracket; The connecting block (11) is symmetrical in the left front upper bracket and the right front upper bracket. The connecting block (11) in the left front upper bracket is exchanged with the connecting block (11) in the right front upper bracket to generate a new cab suspension device.

2. The cab suspension device according to claim 1, characterized in that: The sleeve assembly (205) comprises: A connecting rod, after the cab is lowered, the connecting rod is locked inside the lock bolt assembly (211); A guide tube (2053) is provided at both ends of the connecting rod, and the diameter of the guide tube (2053) is larger than the diameter of the connecting rod.

3. The cab suspension device according to claim 2, characterized in that: The connecting rod comprises: Inner casing (2050); An outer sleeve (2052) is sleeved on the surface of the inner sleeve (2050), and rubber (2051) is provided between the outer sleeve (2052) and the inner sleeve (2050).

4. The cab suspension device according to claim 1, wherein: The lock bolt assembly (211) is provided with a locking groove (2110) and a lock hook (2111), and the lock hook (2111) is rotatably connected to the lock bolt assembly (211); After the cab is lowered, one end of the locking hook (2111) is rotated into the locking groove (2110) so that the sleeve assembly (205) is locked in the locking groove (2110).

5. The cab suspension device according to claim 1, wherein: The rear suspension upper bracket assembly (20) comprises: frame; An upper bracket rear enclosure mounting panel (203), the upper bracket rear enclosure mounting panel (203) being fixed to one side of the frame; The sleeve assembly (205) is arranged between the frame body and the upper bracket rear enclosure mounting panel (203).

6. The cab suspension device according to claim 5, characterized in that: The frame comprises: An upper bracket top plate (200), the upper bracket top plate (200) being used for fixing to a vehicle body; An upper bracket front plate (201), wherein the upper bracket front plate (201) is fixed to one side of the upper bracket top plate (200), and one end of the sleeve assembly (205) is connected to the upper bracket front plate (201); The upper bracket rear plate (202) is fixed to the other side of the upper bracket top plate (200), and the surface of the upper bracket rear plate (202) is fixed to the upper bracket rear enclosure mounting panel (203).

7. The cab suspension device according to claim 5, characterized in that: The rear suspension upper bracket assembly (20) further comprises an upper bracket limiting plate (204), wherein the upper bracket limiting plate (204) is fixed between the frame body and the upper bracket rear enclosure mounting panel (203), and is located above the sleeve assembly (205).

8. The cab suspension device according to claim 1, wherein: The rear suspension lower bracket assembly (21) comprises: Two rear suspension lower bracket bodies (210), the locking bolt assembly (211) is fixed to the top of the rear suspension lower bracket body (210), and a pad (217) is provided between the locking bolt assembly (211) and the rear suspension lower bracket body (210); A shock absorber (212), each rear suspension lower bracket body (210) is provided with a shock absorber (212), and the shock absorber (212) is fixed between the lock bolt assembly (211) and the rear suspension lower bracket body (210); A height valve assembly is fixed on one of the rear suspension lower bracket bodies (210), and the height valve assembly comprises a height valve body (213) fixed on one of the rear suspension lower bracket bodies (210), a connecting rod (214), and an air pipe (215), one end of the connecting rod (214) is connected to the lock bolt assembly (211), and the other end is connected to the height valve body (213), the air pipe (215) is connected between the two shock absorbers (212), and the interface of the height valve body (213) is connected to the air pipe (215).

9. An automobile, characterized in that: It includes: A cab suspension device as claimed in any one of claims 1 to 8.

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