rear suspension locking system of cab and vehicle

Abstract

This invention provides a rear suspension locking system for a driver's cab and a vehicle. The rear suspension locking system includes a bolt assembly and a locking assembly. The bolt assembly includes at least a bolt bracket and a bolt body. The bolt bracket is connected to the driver's cab, and the bolt body is connected to the bolt bracket. The bolt body is movably disposed relative to the bolt bracket along the length of the vehicle, allowing it to have multiple locking positions. The locking assembly is connected to the vehicle frame. The locking assembly and the bolt body have a first engagement state and a second engagement state. In the first engagement state, the locking assembly locks the bolt body in the current position, and the driver's cab is fixedly connected to the vehicle frame. In the second engagement state, the bolt body can move relative to the locking assembly, and the driver's cab and the vehicle frame are relatively movable. This invention solves the problem that existing locking mechanisms cannot adapt to driver's cabs of different lengths and different chassis.

Description

Technical Field

[0001] This invention relates to the field of locking system technology, and more specifically, to a rear suspension locking system for a driver's cab and a vehicle. Background Technology

[0002] In existing technologies, the rear suspension locking system for cabs generally adopts a combination structure of fixed hydraulic bolts and hydraulic locks. The bolt body is permanently fixed to the rear structural components of the cab by welding or rigid bolts, and its position along the length of the vehicle is locked during the overall vehicle design stage and cannot be adjusted. Different vehicle models have significantly different rear suspension mounting point positions due to differences in wheelbase, rear axle position, longitudinal beam height, and suspension layout. The hydraulic lock is directly installed at a specific position on the longitudinal beam of the frame. If the cab is changed, the frame must be replaced simultaneously or the locking mounting point must be re-stamped / welded, resulting in a frame that can only match one cab length and chassis.

[0003] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to provide a rear suspension locking system for the cab and a vehicle, so as to solve the problem that the locking mechanism in the prior art cannot adapt to cabs of different lengths and different chassis.

[0005] To achieve the above objectives, according to one aspect of the present invention, a rear suspension locking system for a driver's cab is provided, comprising: a bolt assembly, the bolt assembly including at least a bolt bracket and a bolt body, the bolt bracket being connected to the driver's cab, the bolt body being connected to the bolt bracket, and the bolt body being movably disposed relative to the bolt bracket along the length direction of the vehicle to allow the bolt body to have multiple locking positions; and a locking assembly, the locking assembly being connected to the vehicle frame, the locking assembly and the bolt body having a first engagement state and a second engagement state, wherein when the locking assembly and the bolt body are in the first engagement state, the locking assembly locks the bolt body in the current position, and the driver's cab is fixedly connected to the vehicle frame; and when the locking assembly and the bolt body are in the second engagement state, the bolt body is movable relative to the locking assembly, and the driver's cab and the vehicle frame are movably disposed relative to each other.

[0006] Furthermore, the bolt bracket includes a support shaft that extends along the length of the vehicle, and the bolt body is sleeved on the support shaft and slidably disposed relative to the support shaft so that the bolt body has multiple locking positions.

[0007] Furthermore, the locking assembly includes a locking bracket and a locking hook. The locking bracket is connected to the vehicle frame and has a clamping space for the bolt body to pass through. The locking hook is movably disposed relative to the locking bracket so that the locking hook has an extended state and a retracted state. When the locking hook is in the extended state, the locking hook extends into the clamping space and connects with the bolt body, and the locking assembly and the bolt body are in a first mating state. When the locking hook is in the retracted state, the locking hook is separated from the bolt body, and the locking assembly and the bolt body are in a second mating state.

[0008] Furthermore, the bolt bracket includes a bracket body with two protruding fixing parts. The two fixing parts are spaced apart along the length of the vehicle to form an adjustment space. A support shaft is located within the adjustment space, with one end of the support shaft connected to one of the fixing parts and the other end of the support shaft connected to the other fixing part.

[0009] Furthermore, both fixing parts are provided with fixing holes, and the support shaft extends into the fixing holes and connects with the fixing holes. A gasket is provided between the support shaft and the hole wall of the fixing hole.

[0010] Furthermore, the bolt body includes a main body section, at least one end of which is provided with a guide section, the cross-sectional area of ​​which gradually increases in the direction away from the main body section.

[0011] Furthermore, the rear suspension locking system for the cab also includes: The limiting member is detachably connected to the support shaft. When the limiting member is connected to the support shaft, the limiting member abuts against the bolt body, and the bolt body is fixed relative to the support shaft. When the limiting member is separated from the support shaft, the bolt body is slidably set relative to the support shaft.

[0012] Furthermore, the locking assembly also includes: a locking plate, which is movably connected to the locking bracket, and the locking plate has a driving end located near the locking hook; a driving member, the output end of which is in contact with the locking plate, and the driving member is used to drive the locking plate to move, thereby causing the driving end of the locking plate to contact the locking hook and drive the locking hook to move synchronously, thereby allowing the locking hook to switch between an extended state and a retracted state.

[0013] Furthermore, the rear suspension locking system of the cab also includes: a rear lower suspension bracket, one end of which is connected to the vehicle frame, and the other end of which is connected to the locking assembly; and a rear suspension spring damper, one end of which is connected to the rear lower suspension bracket, and the other end of which is connected to the locking assembly, wherein the rear suspension spring damper extends along the vehicle height direction.

[0014] According to another aspect of the present invention, a vehicle is provided having a cab rear suspension locking system, wherein the cab rear suspension locking system is the cab rear suspension locking system described above.

[0015] By applying the technical solution of this invention, a bolt body that is movable relative to the bolt bracket along the vehicle's length direction is provided. The bolt bracket is connected to the cab, and the bolt body is connected to the bolt bracket. Without replacing the entire bolt assembly, the installation position of the bolt body on the bolt bracket can be adjusted as needed. This allows the same rear suspension locking system to be adapted to cabs of various lengths and vehicle chassis platforms with different wheelbases, improving the versatility of the rear suspension locking system. In the first engagement state, the locking assembly locks the bolt body, rigidly connecting the cab and the frame. In the second engagement state, the bolt body can move relative to the locking assembly, releasing the constraint on the bolt body. This allows the cab and frame to be relatively movable, making the locking and releasing functions more convenient and reliable. This application solves the problem that existing locking mechanisms cannot adapt to cabs of different lengths and chassis. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 A schematic diagram of a first embodiment of the cab rear suspension locking system according to the present invention is shown; Figure 2 A schematic diagram of a second embodiment of the cab rear suspension locking system according to the present invention is shown; Figure 3 A schematic diagram of an embodiment of the bolt assembly according to the present invention is shown; Figure 4 A schematic diagram of a first embodiment of the locking assembly according to the present invention is shown; Figure 5 A schematic diagram of a second embodiment of the locking assembly according to the present invention is shown.

[0017] The above figures include the following reference numerals: 1. Driver's cab; 2. Bolt assembly; 21. Locking bolt bracket; 210. Adjustable space; 211. Support body; 212. Fixing part; 22. Diagonal brace assembly; 23. Lock bolt body; 231. Main body paragraph; 232. Guide section; 24. Support shaft; 25. Gasket; 3. Locking assembly; 30. Locking bracket; 301. Clamping space; 31. Locking hook; 32. Lock plate; 320. Driver end; 33. Driving components; 34. Oil filler port; 35. First locating pin; 36. Second locating pin; 4. Rear suspension lower bracket; 5. Rear suspension spring damper; 6. Frame. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0022] Currently, for maintenance of engines and other components mounted below the cab in medium and heavy-duty commercial vehicles, the rear suspension of the cab often employs a combination of hydraulic locks and hydraulic bolts for locking. When the cab needs to be tilted, the hydraulic locks open and release the bolts, allowing the cab to tilt and lift. This method has advantages such as mature technology, convenient locking and unlocking operations, and high reliability of the locking mechanism. However, it also has disadvantages such as the large weight of traditional hydraulic locks, the fixed relative positions of the hydraulic bolts, the cab, and the hydraulic locks, making it impossible to adjust the position of the bolt mechanism according to needs, and the inability of the same solution to adapt to the rapid replacement requirements of cabs of different lengths and chassis.

[0023] Combination Figures 1 to 5 As shown, according to a specific embodiment of this application, a cab rear suspension locking system is provided.

[0024] Specifically, the rear suspension locking system of the cab includes a bolt assembly 2 and a locking assembly 3. The bolt assembly 2 includes at least a bolt bracket 21 and a bolt body 23. The bolt bracket 21 is connected to the cab 1, and the bolt body 23 is connected to the bolt bracket 21. The bolt body 23 is movably disposed relative to the bolt bracket 21 along the length of the vehicle, so that the bolt body 23 has multiple locking positions. The locking assembly 3 is connected to the frame 6. The locking assembly 3 and the bolt body 23 have a first engagement state and a second engagement state. When the locking assembly 3 and the bolt body 23 are in the first engagement state, the locking assembly 3 locks the bolt body 23 in the current position, and the cab 1 is fixedly connected to the frame 6. When the locking assembly 3 and the bolt body 23 are in the second engagement state, the bolt body 23 can move relative to the locking assembly 3, and the cab 1 and the frame 6 are movably disposed relative to each other.

[0025] By applying the technical solution of this embodiment, a bolt body 23 that is movable relative to the bolt bracket 21 along the vehicle length direction is provided. The bolt bracket 21 is connected to the cab 1, and the bolt body 23 is connected to the bolt bracket 21. Without replacing the entire bolt assembly 2, the installation position of the bolt body 23 on the bolt bracket 21 can be adjusted according to needs. This allows the same rear suspension locking system for cabs of various lengths and vehicle chassis platforms with different wheelbases to be adapted, improving the versatility of the rear suspension locking system. In the first engagement state, the locking assembly 3 locks the bolt body 23, making the cab 1 and the frame 6 rigidly connected. In the second engagement state, the bolt body 23 can move relative to the locking assembly 3, releasing the constraint on the bolt body 23, allowing the cab 1 and the frame 6 to be relatively movable. This makes the locking and releasing functions more convenient and reliable. This application solves the problem that the locking mechanism in the prior art cannot adapt to cabs of different lengths and different chassis.

[0026] In one exemplary embodiment of this application, the locking assembly 3 is a lightweight hydraulic lock, and the bolt assembly 2 is a hydraulic bolt.

[0027] Specifically, the bolt bracket 21 includes a support shaft 24 that extends along the length of the vehicle. The bolt body 23 is sleeved on the support shaft 24 and is slidably disposed relative to the support shaft 24 so that the bolt body 23 has multiple locking positions.

[0028] In this embodiment, by providing a rigid support shaft 24 extending along the length of the vehicle in the bolt bracket 21, the bolt body 23 is a sleeve structure, directly sleeved on the support shaft 24 and can slide freely along its axial direction, thus realizing the positioning of multiple locking positions; the support shaft 24 is a rigid component with high bending stiffness and is not easily deformed, which can ensure the stability of the sliding trajectory and improve the adjustment accuracy of commercial vehicles; by adjusting the sliding position of the bolt body 23 on the support shaft 24, the assembly of various vehicle models can be completed, greatly improving the assembly flexibility.

[0029] Specifically, the locking assembly 3 includes a locking bracket 30 and a locking hook 31. The locking bracket 30 is connected to the vehicle frame 6. The locking bracket 30 has a clamping space 301 through which the bolt body 23 passes. The locking hook 31 is movably disposed relative to the locking bracket 30 so that the locking hook 31 has an extended state and a retracted state. When the locking hook 31 is in the extended state, the locking hook 31 extends into the clamping space 301 and connects with the bolt body 23. The locking assembly 3 and the bolt body 23 are in a first mating state. When the locking hook 31 is in the retracted state, the locking hook 31 is separated from the bolt body 23. The locking assembly 3 and the bolt body 23 are in a second mating state.

[0030] In this embodiment, the locking bracket 30 is a high-strength rigid structure with load-bearing and guiding functions. The locking hook 31 is a movable component that rotates and translates via a hydraulic drive mechanism. By creating a clamping space 301 on the locking bracket 30 for the bolt body 23 to pass through, the locking hook 31 can extend from above or to the side of the clamping space 301, thereby connecting with the bolt body 23. The two side walls of the locking bracket 30 together limit the locking hook 31, preventing it from shifting. This effectively resists the torsional force and vibration load on the cab during emergency braking and turning, avoiding the risk of disengagement and slippage, and helps to achieve precise positioning of the bolt body 23. In the first engaged state, the locking hook 31... 1. Extend and connect with the bolt body 23. At this time, the locking assembly 3 is in the locked state. Only high-pressure oil needs to be injected into the hydraulic lock to drive the locking hook 31 to retract. When the locking hook 31 is in the retracted state, the locking hook 31 is separated from the bolt body 23, and the locking assembly 3 and the bolt body 23 are in the second engagement state, which greatly shortens the response time and reduces the error of manual operation. The locking bracket 30 is a high-strength die-cast structure. The hollow internal structure design reduces the weight of the hydraulic lock. The locking hook 31 is a high-strength alloy steel stamping part with a simple structure, which reduces the manufacturing cost of the hydraulic lock. The locking assembly 3 has a compact structure and light weight, making the locking assembly lighter.

[0031] Preferably, the bolt bracket 21 includes a bracket body 211, the bracket body 211 having two protruding fixing parts 212, the two fixing parts 212 being spaced apart along the length of the vehicle to form an adjustment space 210, a support shaft 24 being located within the adjustment space 210, one end of the support shaft 24 being connected to one of the fixing parts 212, and the other end of the support shaft 24 being connected to the other fixing part 212.

[0032] In this embodiment, by providing two independent protruding fixing parts 212, an adjustment space 210 is formed between them. The bolt body 23 can be inserted into the adjustment space 210. The two fixing parts 212 are spaced apart along the length of the vehicle and serve as symmetrical fulcrums to limit the bolt body 23, effectively preventing the bolt body 23 from swinging and ensuring a stable sliding trajectory. By connecting one end of the support shaft 24 to one of the fixing parts 212 and the other end of the support shaft 24 to the other fixing part 212, the support shaft 24 is subjected to axial constraint at both ends, preventing deformation of the support shaft 24 and significantly improving the rigidity of the bolt bracket 21. This ensures that the bolt body 23 always slides smoothly along the support shaft 24 within the adjustment stroke, preventing the bolt body 23 from deviating during the sliding process and further ensuring driving safety.

[0033] Preferably, both fixing parts 212 are provided with fixing holes, the support shaft 24 extends into the fixing holes and connects with the fixing holes, wherein a gasket 25 is provided between the support shaft 24 and the hole wall of the fixing hole.

[0034] In this embodiment, by providing a shim 25 between the support shaft 24 and the wall of the fixing hole, the shim 25 absorbs the vibration energy from the cab, reduces the impact load of the support shaft 24 on the wall of the fixing hole, prevents the support shaft 24 from directly contacting the wall of the fixing hole and causing wear, improves the connection strength between the support shaft 24 and the wall of the fixing hole, effectively isolates vibration and impact load, significantly improves the fatigue life of the bolt assembly 2, and at the same time, the shim 25 can fill the small gap between the shaft and the hole, ensuring that the support shaft 24 is positioned in the hole.

[0035] Preferably, the gasket 25 is made of rubber composite material or polyurethane.

[0036] Specifically, the bolt body 23 includes a main body section 231, and at least one end of the main body section 231 is provided with a guide section 232, the cross-sectional area of ​​the guide section 232 being arranged to gradually increase in the direction away from the main body section 231.

[0037] In this embodiment, since the guide section 232 is a sloping structure, when the bolt body 23 approaches the clamping space 301, it comes into contact with the inner wall of the clamping space 301, automatically correcting the bolt body 23 to the central axis and achieving automatic centering. During vehicle operation, the cab vibrates due to road bumps and braking inertia, and the bolt body 23 slides back and forth on the support shaft 24. The cross-sectional area of ​​the guide section 232 is gradually increased in the direction away from the main body section 231 to ensure that the stress distribution is uniform when the bolt body 23 contacts the inner wall of the clamping space 301 during the sliding process, avoiding stress concentration.

[0038] Specifically, the rear suspension locking system of the cab also includes a limiting member, which is detachably connected to the support shaft 24. When the limiting member is connected to the support shaft 24, the limiting member abuts against the bolt body 23, and the bolt body 23 is fixedly set relative to the support shaft 24. When the limiting member is separated from the support shaft 24, the bolt body 23 is slidably set relative to the support shaft 24.

[0039] In this embodiment, the bolt body 23 can be axially changed by detachably connecting the limiting member to the support shaft 24. When the limiting member is connected to the support shaft 24, the bolt body 23 is locked in a fixed position. When the limiting member is removed, the bolt body 23 can slide freely along the support shaft, thus adapting to various vehicle models. After the limiting member is connected to the support shaft 24, the bolt body 23 is limited, avoiding the risk of displacement under the high-frequency vibration of vehicle driving.

[0040] Preferably, the limiting member is connected to the support shaft 24 by a high-strength snap-fit, pin, or threaded locking structure, which has good vibration resistance.

[0041] Preferably, such as Figure 5As shown, the locking assembly 3 also includes a locking plate 32 and a driving member 33. The locking plate 32 is movably connected to the locking bracket 30. The locking plate 32 has a driving end 320 located near the locking hook 31. The output end of the driving member 33 is in contact with the locking plate 32. The driving member 33 is used to drive the locking plate 32 to move, thereby causing the driving end 320 of the locking plate 32 to contact the locking hook 31 and drive the locking hook 31 to move synchronously, thereby allowing the locking hook 31 to switch between an extended state and a retracted state.

[0042] In this embodiment, by setting the output end of the drive member 33 in contact with the locking plate 32, the drive member 33 only needs to drive the locking plate 32 to make the drive end 320 drive the locking hook 31 to move. The locking plate 32 has a small mass and only requires a small thrust to move it, thereby significantly reducing the weight of the drive member 33 and realizing the lightweighting of the rear suspension locking system of the cab. The drive end 320 of the locking plate 32 is an inclined surface, which can convert a small thrust into a large torque, reducing the load on the drive member 33.

[0043] Preferably, the drive element 33 can be a closed electric push rod or a pneumatic cylinder.

[0044] In one exemplary embodiment of this application, the locking bracket 30 and the locking plate 32 are connected by a first positioning pin 35; the locking hook 31 and the locking bracket 30 are connected by a second positioning pin 36.

[0045] Specifically, the cab rear suspension locking system also includes a rear lower suspension bracket 4 and a rear suspension spring damper 5. One end of the rear lower suspension bracket 4 is connected to the vehicle frame 6, and the other end of the rear lower suspension bracket 4 is connected to the locking assembly 3. One end of the rear suspension spring damper 5 is connected to the rear lower suspension bracket 4, and the other end of the rear suspension spring damper 5 is connected to the locking assembly 3. The rear suspension spring damper 5 extends along the vehicle height direction.

[0046] In this embodiment, by fixing the locking assembly 3 to the rear suspension lower bracket 4, and connecting one end of the rear suspension lower bracket 4 to the vehicle frame 6, the locking assembly 3 moves completely synchronously with the rear suspension system of the cab. The relative position between the locking hook 31 and the locking bolt body 23 remains constant, preventing relative sliding of the locking contact surfaces. By directly mounting the locking assembly 3 to the upper end of the rear suspension spring damper 5, the locking assembly 3 moves with the entire suspension system. When the cab moves up and down due to road conditions, the rear suspension spring damper 5 compresses or extends accordingly, causing the locking assembly 3 to move synchronously. Both 31 and the bolt body 23 are fixed to the cab and the locking assembly 3, and their relative positions are always precisely aligned, avoiding problems such as locking misalignment caused by suspension deformation; the rear suspension spring damper 5 is an elastic connecting element between the cab and the frame, bearing the weight of the cab and absorbing vibration energy from the road surface during vehicle operation. On bumpy roads, during braking deceleration or acceleration, the rear suspension spring damper 5 can prevent the cab from shaking violently through the action of the spring, effectively preventing vibration from being transmitted to the cab, improving driving comfort and the fatigue life of components.

[0047] According to another specific embodiment of this application, a vehicle is also provided, the vehicle having a cab rear suspension locking system, the cab rear suspension locking system being the aforementioned cab rear suspension locking system.

[0048] By applying the technical solution of this embodiment, a bolt body 23 that is movable relative to the bolt bracket 21 along the length of the vehicle is provided. The bolt bracket 21 is connected to the cab 1, and the bolt body 23 is connected to the bolt bracket 21. Without replacing the entire bolt assembly 2, the installation position of the bolt body 23 on the bolt bracket 21 can be adjusted according to the requirements. This allows the same rear suspension locking system for the cab to be adapted to cabs 1 of various lengths and vehicle chassis platforms with different wheelbases, improving the versatility of the rear suspension locking system. In the first engagement state, the locking assembly 3 locks the bolt body 23, making the cab 1 and the frame 6 rigidly connected. In the second engagement state, the bolt body 23 can move relative to the locking assembly 3, releasing the constraint on the bolt body 23. This allows the cab 1 and the frame 6 to be relatively movable, making the locking and releasing functions more convenient and reliable.

[0049] According to another specific embodiment of this application, a preferred embodiment of a lightweight platform-based rear suspension locking mechanism for a commercial vehicle cab is also provided.

[0050] Specifically, by adopting a locking system consisting of a lightweight hydraulic lock and an adjustable bolt mechanism, replacing the traditional hydraulic lock and fixed bolt mechanism, the system ensures convenient locking and unlocking operations and reliable locking safety for commercial vehicle cabs. It features a lighter locking mechanism and an adjustable bolt position for the hydraulic bolt mechanism to match cabs of different lengths, accommodating the need for quick replacement of cabs of different lengths and chassis. This aligns with the design philosophy and development trend of lightweight and platform-based commercial vehicle design.

[0051] Specifically, such as Figures 1 to 2 As shown, the lightweight platform-based rear suspension locking system for commercial vehicle cabs includes a cab 1, two hydraulic bolt assemblies 2, two lightweight locking assemblies 3, two rear suspension lower supports 4, two rear suspension spring dampers 5, and a frame 6. The upper ends of the two bolt assemblies 2 are fixedly connected to the cab 1, and their lower ends are respectively fixedly connected to the two locking assemblies 3, symmetrically arranged on both sides of the cab 1. The lower ends of the two lightweight locking assemblies 3 are respectively fixedly connected to the upper ends of the two rear suspension spring dampers 5, and the inner ends of the frame 6 are respectively fixedly connected to the upper ends of the two rear suspension lower supports 4, symmetrically arranged on both sides of the frame 6. The lower ends of the two rear suspension lower supports 4 are fixedly connected to the frame 6. The lower ends of the two rear suspension spring dampers 5 are respectively connected to the middle of the two rear suspension lower supports 4.

[0052] Among them, bolt assembly 2 is a hydraulic bolt mechanism assembly, and locking assembly 3 is a lightweight hydraulic lock.

[0053] Furthermore, the upper ends of the two bolt assemblies 2 are fixedly connected to the cab 1 by seven bolts, and the lower ends are connected to the locking hook 31 of the locking assembly 3 by hydraulic bolts. During the driving process, the locking hook 31 of the locking assembly 3 closes and hooks the bolt body 23 tightly, ensuring a reliable connection between the bolt assembly 2 and the locking assembly 3 during driving.

[0054] Furthermore, such as Figure 3 As shown, the two locking bolt assemblies 2 each include a locking bolt bracket 21, a diagonal brace assembly 22, a hydraulic locking bolt and locking bolt body 23, a support shaft 24, and a washer 25. The locking bolt bracket 21 and the diagonal brace assembly 22 are fixedly connected by bolts and nuts. The hydraulic locking bolt and locking bolt body 23, the support shaft 24, and the washer 25 are connected to the locking bolt bracket 21 by bolts and nuts. The position of the hydraulic locking bolt and locking bolt body 23 can be adjusted by adjusting the relative position of the hydraulic locking bolt and locking bolt body 23 and the support shaft 24, thereby adapting to installation conditions of cabs of different lengths on the same frame or the same cab on different frames.

[0055] Furthermore, such as Figure 4As shown, the two locking assemblies 3 adopt a small locking assembly design. Their lower ends are connected to the upper ends of the two rear suspension spring shock absorbers 5 via bolts and nuts, and their inner ends are fixedly connected to the two rear suspension lower brackets 4 via bolts and nuts. The upper ends are connected to the hydraulic bolt and bolt body 23 via locking hooks 31. When the cab needs to be tilted and lifted, high-pressure hydraulic oil is injected into the two locking assemblies 3 through the oil inlet 34, thereby pushing the drive component 33 to open, and then the locking hook 31 rotates and opens, ensuring that the locking hook 31 releases the hydraulic bolt and bolt body 23, enabling subsequent tilting and lifting of the cab. The drive component 33 is a locking piston.

[0056] Furthermore, the two rear suspension lower brackets 4 are fixed to the frame 6 at their lower ends by four bolts respectively.

[0057] Furthermore, the lower ends of the two rear suspension spring dampers 5 are fixedly connected to the two rear suspension lower brackets 4 by bolts.

[0058] Specifically, minor changes can be made to the structure based on the embodiments of this application, such as changing the position or quantity of the electric cylinder, linkage mechanism, top support, base bracket assembly and limit bracket, or making minor modifications to the structure.

[0059] Specifically, the technical solution of this embodiment has the following key points: (1) Two lightweight hydraulic locks are used to lock and unlock the cab of the commercial vehicle.

[0060] (2) A hydraulic bolt mechanism assembly with adjustable position of two hydraulic bolts and guide sleeve assembly is adopted.

[0061] (3) Small and lightweight hydraulic lock mechanical structure.

[0062] (4) Mechanical structure of hydraulic bolt mechanism assembly.

[0063] The technical solution adopted in this embodiment has the following advantages: 1) This embodiment adopts a locking system consisting of a lightweight hydraulic lock and an adjustable bolt mechanism, replacing the traditional hydraulic lock and fixed bolt mechanism. Compared with the traditional locking mechanism, this solution has a lighter locking mechanism. The hydraulic bolt mechanism can be adjusted to match and install different length cabs with the same frame or the same cab with different frames, which is in line with the design concept and development trend of lightweight and platform-based commercial vehicle design. 2) The hydraulic lock in this embodiment adopts a small lock solution. By optimizing the structure, it is smaller in size, lighter in weight, and lower in cost than traditional hydraulic locks, which provides higher economic value for both commercial vehicle OEMs and commercial vehicle owners.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cab rear suspension lock system, characterized by, include: The bolt assembly (2) includes at least a bolt bracket (21) and a bolt body (23). The bolt bracket (21) is connected to the cab (1), and the bolt body (23) is connected to the bolt bracket (21). The bolt body (23) is movably disposed relative to the bolt bracket (21) along the length of the vehicle so that the bolt body (23) has multiple locking positions. The locking assembly (3) is connected to the frame (6). The locking assembly (3) and the bolt body (23) have a first engagement state and a second engagement state. When the locking assembly (3) and the bolt body (23) are in the first engagement state, the locking assembly (3) locks the bolt body (23) in the current position. The cab (1) is fixedly connected to the frame (6). When the locking assembly (3) and the bolt body (23) are in the second engagement state, the bolt body (23) can move relative to the locking assembly (3). The cab (1) and the frame (6) are movably arranged relative to each other.

2. The cab rear suspension lock system of claim 1, wherein, The bolt bracket (21) includes a support shaft (24) that extends along the length of the vehicle. The bolt body (23) is sleeved on the support shaft (24) and is slidably disposed relative to the support shaft (24) so ​​that the bolt body (23) has multiple locking positions.

3. The cab rear suspension lock system of claim 1, wherein, The locking assembly (3) includes a locking bracket (30) and a locking hook (31). The locking bracket (30) is connected to the frame (6). The locking bracket (30) has a clamping space (301) through which the bolt body (23) passes. The locking hook (31) is movably disposed relative to the locking bracket (30) so that the locking hook (31) has an extended state and a retracted state. When the locking hook (31) is in the extended state, the locking hook (31) extends into the clamping space (301) and connects with the bolt body (23). The locking assembly (3) and the bolt body (23) are in the first mating state. When the locking hook (31) is in the retracted state, the locking hook (31) is separated from the bolt body (23). The locking assembly (3) and the bolt body (23) are in the second mating state.

4. The cab rear suspension lock system of claim 2, wherein, The bolt bracket (21) includes a bracket body (211), which has two protruding fixing parts (212). The two fixing parts (212) are spaced apart along the length of the vehicle to form an adjustment space (210). The support shaft (24) is located in the adjustment space (210). One end of the support shaft (24) is connected to one of the fixing parts (212), and the other end of the support shaft (24) is connected to the other fixing part (212).

5. The cab rear suspension lock system of claim 4, wherein, Both of the fixing parts (212) are provided with fixing holes, and the support shaft (24) extends into the fixing hole and is connected to the fixing hole. A gasket (25) is provided between the support shaft (24) and the hole wall of the fixing hole.

6. The cab rear suspension lock system of claim 4, wherein, The bolt body (23) includes a main body section (231), and at least one end of the main body section (231) is provided with a guide section (232), the cross-sectional area of ​​the guide section (232) is provided to gradually increase in the direction away from the main body section (231).

7. The cab rear suspension lock system of claim 4, wherein, The cab rear suspension locking system also includes: The limiting member is detachably connected to the support shaft (24). When the limiting member is connected to the support shaft (24), the limiting member abuts against the bolt body (23). The bolt body (23) is fixedly disposed relative to the support shaft (24). When the limiting member is separated from the support shaft (24), the bolt body (23) is slidably disposed relative to the support shaft (24).

8. The cab rear suspension lock system of claim 3, wherein, The locking assembly (3) further includes: Locking plate (32), which is movably connected to the locking bracket (30), and the locking plate (32) has a driving end (320) located near the locking hook (31). The drive member (33) has its output end in contact with the lock plate (32). The drive member (33) is used to drive the lock plate (32) to move, thereby causing the drive end (320) of the lock plate (32) to contact the locking hook (31) and drive the locking hook (31) to move synchronously, thereby causing the locking hook (31) to switch between the extended state and the retracted state.

9. The cab rear suspension lock system of claim 1, wherein, The cab rear suspension locking system also includes: The rear lower suspension bracket (4) is connected at one end to the vehicle frame (6) and at the other end to the locking assembly (3). The rear suspension spring damper (5) is connected at one end to the rear suspension lower bracket (4) and at the other end to the locking assembly (3). The rear suspension spring damper (5) extends along the vehicle height direction.

10. A vehicle characterized by comprising: The vehicle has a rear cab suspension locking system, which is the rear cab suspension locking system as described in any one of claims 1-9.

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