Cab suspension device and automobile thereof

Abstract

The invention relates to a cab suspension device and an automobile with the cab suspension device, the cab suspension device comprises a rear suspension unit, the rear suspension unit comprises a rear suspension upper support assembly and a rear suspension lower support assembly, the rear suspension upper support assembly is used for being fixed on an automobile body, and the rear suspension lower support assembly is used for being fixed on an automobile frame; the rear suspension upper support assembly comprises a sleeve assembly, and the rear suspension lower support assembly comprises a lock bolt assembly. When the cab is turned over, the sleeve assembly is located above the lock bolt assembly, and after the cab falls down, the sleeve assembly is locked in the lock bolt assembly. According to the rear suspension upper support assembly, the sleeve assembly is arranged on the rear suspension upper support assembly and correspondingly matched with the lock bolt assembly, so that the sleeve assembly can be tightly locked in the normal running process of a vehicle when a cab falls down, and abnormal sound caused by frequent relative movement of the rear suspension upper support assembly and the rear suspension lower support assembly on a bumpy road surface is prevented; and the comfort of a driver and passengers in the driving process is greatly improved.

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 the lock hook, thereby producing abnormal noise. In view of the common problem of abnormal noise in the rear suspension of the cab in the industry, in order to ensure the good reputation of domestic brands overseas and the good impression of foreigners on 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 is used to be fixed to a vehicle body, and the rear suspension lower bracket assembly is used to be fixed to a vehicle frame; the rear suspension upper bracket assembly comprises a sleeve assembly, and the rear suspension lower bracket assembly comprises 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 locking 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 enclosure mounting panel, wherein the upper bracket rear enclosure mounting panel is fixed to one side of the frame body; and the sleeve assembly is disposed between the frame body and the upper bracket rear enclosure mounting panel.

[0011] In some embodiments, the frame body 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 enclosure mounting panel.

[0012] In some embodiments, the rear suspension upper bracket assembly further includes: an upper bracket limiting plate, wherein the upper bracket limiting plate 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 arranged 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 to 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: a cab suspension device as described above.

[0015] The beneficial effects brought by the technical solution provided by the embodiments of the present application include:

[0016] The 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 correspondingly matching a lock bolt assembly, the sleeve assembly can be tightly locked during normal driving of the vehicle with the cab dropped down, 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 drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0018] Figure 1 A comparison diagram of the front suspension unit provided in an embodiment of the present application in 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 a rear suspension lower bracket body and a locking 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] Fig. 9 A schematic diagram of the position of the lock bolt assembly and the sleeve when the cab is flipped over provided in an embodiment of the present application;

[0027] Fig.10 A schematic diagram of the position of the locking bolt assembly and the 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, connection block; 12, floor longitudinal beam mounting groove;

[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 enclosure 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 solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, 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 will frequently hit 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 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 over, 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.

[0033] In the present application, by setting a sleeve assembly 205 on the rear suspension upper bracket assembly 20 and matching the corresponding lock bolt assembly 211, the sleeve assembly 205 can be tightly locked during the normal driving of the vehicle with the cab dropped down, 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, so that 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-mentioned 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 cushion block 217 is arranged between the lock bolt assembly 211 and the rear suspension lower bracket body 210; a shock absorber 212 is arranged on each rear suspension lower bracket body 210, 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, a connecting rod 214 and an air pipe 215 fixed on one of the rear suspension lower bracket bodies 210, 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 locking 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 lock bolt assembly 211 and the rear suspension lower bracket body 210 in order to enhance the stability of the connection and reduce the wear caused by direct contact; wherein the pad 217 is usually made of an elastic material, such as rubber 2051, polyurethane or 1,5-naphthalene diisocyanate, etc. These materials have good buffering and shock absorption properties, and can effectively absorb and disperse the energy generated by vibration or impact between the lock bolt assembly 211 and the rear suspension lower bracket body 210, thereby reducing noise and vibration and improving riding comfort. In the present application, 1,5-naphthalene diisocyanate material is preferably used to make the pad 217 (1,5-Nphthalene Diisocyanate), which is an organic compound belonging to the isocyanate class, has a rigid aromatic naphthalene ring structure, is a high melting point aromatic diisocyanate, has a molecular weight of 210, and a -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, small 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 caused by 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 firmly connected to the bolt assembly 211 by bolts and matching nuts 207, ensuring the tightness and reliability of the connection; the bottom of the shock absorber 212 is also assembled with the rear suspension lower bracket body 210 by high-strength bolts and wear-resistant nuts 207 to ensure the stability and durability of the structure. In this application, in order to optimize the performance of the device, the shock absorber 212 is designed to be tilted to adapt to different suspension angles and vehicle posture requirements, thereby improving the stability and controllability of the vehicle.

[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 absorbers 212 on the two rear suspension lower bracket bodies 210 through the air pipe 215 and the 12-T three-way quick-plug pipe connector 216.

[0041] On the basis of the above embodiments, 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 so that the sleeve assembly 205 is locked 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 to transmit 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 be smoothly separated 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 through the 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] On the basis of the above embodiments, 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 set to 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, and effectively prevent the cab from being offset or misaligned 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, and ensures 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 a rubber 2051 is arranged between the outer sleeve 2052 and the inner sleeve 2050. Among them, the hollow inner sleeve 2050 can give priority to the use of 20# steel with both strength and toughness in material selection to ensure its stable and durable structure. On the outside of the inner sleeve 2050, a layer of rubber 2051 is tightly wrapped by 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 40Cr alloy steel with higher strength. Such a 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 the inner sleeve 2050 are closely connected by precise vulcanization bonding technology, forming a stable and reliable connection structure. In addition, the two ends of the sleeve assembly 205 are also equipped with tapered guide tubes 2053. The guide tubes 2053 are made of PA66+glass fiber. This composite material not only has excellent wear resistance and strength, but also can provide precise guidance during vehicle movement. The sleeve assembly 205 adopts a multi-layer vulcanized connection structure, especially the internal vulcanized rubber layer, which can effectively isolate external impact and vibration, thereby better ensuring the stability of the vehicle during driving, and also significantly enhancing driving comfort.

[0046] Based on the above embodiments, in this embodiment, the rear suspension upper bracket assembly 20 includes: a frame body, an upper bracket rear enclosure mounting panel 203, the upper bracket rear enclosure 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 enclosure 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 enclosure mounting panel 203.

[0048] Among them, the upper bracket top plate 200, the upper bracket front plate 201, the upper bracket rear plate 202 and the upper bracket rear enclosure mounting panel 203 are integrated. Further, the rear suspension upper bracket assembly 20 also includes: an upper bracket limit 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. The upper bracket front plate 201, the upper bracket rear plate 202, the upper bracket rear enclosure mounting panel 203 and the upper bracket limit plate 204, these key components can be processed by precise stamping and welding technology, and together constitute the rear suspension upper bracket assembly 20. In this processing process, each component undergoes strict size 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, which are not only reasonably designed but also accurately sized, and are used to firmly fix the rear suspension upper bracket assembly 20 on the vehicle body. Through these mounting holes, bolts or other fasteners can be conveniently used to connect the assembly to the vehicle body, thereby ensuring the stability and safety of the entire structure.

[0050] When the sleeve assembly 205 is assembled to the rear suspension upper bracket assembly 20, fasteners such as a pin 206 and a nut 207 are usually used. It should be noted that before the sleeve assembly 205 is assembled, a layer of butter must be evenly applied to the inner wall and conical surface of the sleeve assembly 205. The butter plays a vital role in lubrication, which can effectively reduce the friction and wear of the sleeve assembly 205 during assembly and use, thereby extending its service life and improving the overall operating efficiency.

[0051] On the basis of the above embodiments, 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 front suspension upper bracket of the existing technical solution is 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 and the floor longitudinal beam of the cab, 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, 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 front upper bracket and the right front upper bracket. The "Z"-shaped connecting block 11 in the left front upper bracket of this solution is exchanged with the "Z"-shaped connecting block 11 in the right front upper bracket to generate a new cab front suspension and cab device, which can be replaced with the current solution without opening a new mold, and a modular cab front suspension and cab device is completed, which can meet the domestic and overseas left-hand vehicle markets, and can also be used in the overseas right-hand vehicle markets, realizing modular development and completing the module universalization of 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 vehicle, which includes a 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 the corresponding lock bolt assembly 211, the sleeve assembly 205 can be tightly locked during the normal driving of the vehicle with the cab dropped down, 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 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 over, 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 comprises a front suspension unit 1, wherein the front suspension unit 1 comprises a front suspension upper bracket 10 and a connecting block 11, wherein the front suspension upper bracket 10 is used 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 enclosure mounting panel 203, wherein the upper bracket rear enclosure mounting panel 203 is fixed to one side of the frame body; and the sleeve assembly 205 is disposed between the frame body and the upper bracket rear enclosure mounting panel 203.

[0065] In some embodiments, the frame body 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 , 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 .

[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 cushion block 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, a connecting rod 214 and an air pipe 215 fixed on one of the rear suspension lower bracket bodies 210, 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 the present application, it should be noted that the terms "upper", "lower", etc. 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 the present application and simplifying the description, rather than indicating or implying 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 the present 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such 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 including 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0071] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

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 on a vehicle body, and the rear suspension lower bracket assembly (21) being used to be fixed on a 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).

2. The cab suspension device according to claim 1, characterized in that: The cab suspension device also includes a front suspension unit (1), the front suspension unit (1) including a front suspension upper bracket (10) and a connecting block (11), the front suspension upper bracket (10) being used to be connected to a 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, wherein 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.

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

4. The cab suspension device according to claim 3, 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).

5. The cab suspension device according to claim 1, characterized in that: 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) rotates to the inside of the locking groove (2110) so that the sleeve assembly (205) is locked inside the locking groove (2110).

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

7. The cab suspension device according to claim 6, characterized in that: The frame comprises: An upper bracket top plate (200), wherein the upper bracket top plate (200) is 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).

8. The cab suspension device according to claim 6, 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).

9. The cab suspension device according to claim 1, characterized in that: The rear suspension lower bracket assembly (21) comprises: Two rear suspension lower bracket bodies (210), the locking bolt assembly (211) being fixed to the top of the rear suspension lower bracket body (210), and a cushion block (217) being provided between the locking bolt assembly (211) and the rear suspension lower bracket body (210); A shock absorber (212), each of the rear suspension lower bracket bodies (210) is provided with a shock absorber (212), and the shock absorber (212) is fixed between the locking bolt assembly (211) and the rear suspension lower bracket body (210); A height valve assembly, wherein the 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), wherein 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 two shock absorbers (212), and the interface of the height valve body (213) is connected to the air pipe (215).

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

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