Cab turnover device and vehicle

Abstract

The invention provides a cab turnover device and a vehicle, and relates to the technical field of vehicles, the cab turnover device comprises a mounting seat and a telescopic piece, and the mounting seat is detachably connected to a frame of the vehicle; one end of the telescopic piece is rotationally connected to the mounting base, and the other end of the telescopic piece is used for being detachably and rotationally connected to the front portion of a cab of the vehicle. The cab turnover device is installed on the vehicle only when the cab of the vehicle needs to be turned over, and when the cab does not need to be turned over, the cab turnover device is detached from the vehicle, so that the cab turnover device can be detached from the vehicle to be stored; when the cab of the vehicle is overturned through the cab overturning device, a cab hydraulic overturning system does not need to be arranged at the position between the bottom of the cab and the vehicle frame, and therefore structural vibration and abnormal sound of the cab caused by a cab overturning hydraulic cylinder when the vehicle is in a running state can be avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a cab tilting device and a vehicle. Background Technology

[0002] Currently, medium and heavy trucks and other vehicles consist of a frame and a cab. The cab is hinged to the frame via an articulation shaft. A cab tilting hydraulic transmission system is installed between the bottom of the cab and the frame. By using the cab tilting hydraulic transmission system, the cab can be tilted to expose components such as the powertrain on the frame, making it easier to maintain the powertrain area.

[0003] The cab hydraulic tilting system consists of a cab tilting hydraulic cylinder, connecting oil pipes, etc. The cab tilting hydraulic cylinder is arranged on the frame and located at the bottom of the cab. The cab tilting hydraulic cylinder provides telescopic transmission function when the cab is raised and lowered.

[0004] Because the cab and the frame will move relative to each other when the vehicle is in motion, the cab tilting hydraulic cylinder will generate a damping force when the vehicle is in motion. After the cab is subjected to the damping force, the cab will produce structural vibration and abnormal noise, which will reduce the comfort of the people in the cab. Summary of the Invention

[0005] This application provides a cab tilting device and vehicle to solve the technical problem that existing cab tilting hydraulic cylinders cause structural vibration and abnormal noise in the cab.

[0006] A first aspect of this application provides a cab tilting device, comprising:

[0007] Mounting bracket for detachable attachment to the vehicle frame;

[0008] At least one telescopic member, one end of which is rotatably connected to the mounting base, and the opposite end of which is detachably rotatably connected to the front of the vehicle's cab, the telescopic member being configured as follows:

[0009] When shortened, it is used to drive the cab to rotate in a first direction around a first hinge axis that is hinged to the frame, so that the rear of the cab moves away from the frame;

[0010] When extended, it is used to drive the cab to rotate about the first hinge axis in a second direction, so that the cab is reset on the frame.

[0011] In one possible implementation, the mounting base includes a connecting rod and at least one first fixing rod. The end of each telescopic member away from the cab is sequentially hinged to the connecting rod at intervals along the length direction of the connecting rod. One end of each first fixing rod is sequentially spaced along the length direction of the connecting rod, and the other end of each first fixing rod is used for detachable connection to the vehicle frame.

[0012] In one possible implementation, the mounting base further includes at least one second fixing rod, one end of each second fixing rod being sequentially spaced along the length of the connecting rod on the connecting rod, the other end of each second fixing rod being detachably connected to the vehicle frame, and the second fixing rod forming an angle with the first fixing rod.

[0013] In one possible implementation, a first bushing is provided at one end of the first fixing rod near the connecting rod, and the first fixing rod is rotatably sleeved on the connecting rod through the first bushing. A second bushing is provided at one end of the second fixing rod near the connecting rod, and the second fixing rod is rotatably sleeved on the connecting rod through the second bushing.

[0014] In one possible implementation, the first fixing rod and the second fixing rod are distributed in pairs at intervals on the connecting rod, and the telescopic member is located between the pairs of the first fixing rod and the second fixing rod.

[0015] In one possible implementation, a hinge seat is also included, which is used to be disposed at the front of the cab. A second hinge shaft is disposed on the hinge seat. One end of the telescopic member is provided with a first lifting lug. One end of the telescopic member is rotatably sleeved on the second hinge shaft through the first lifting lug. The opposite end of the telescopic member is provided with a second lifting lug. The opposite end of the telescopic member is rotatably sleeved on the connecting rod through the second lifting lug.

[0016] In one possible implementation, the articulated seat includes a seat body, a first mounting wing plate, and a second mounting wing plate. The seat body is located at the front of the cab. Both the first mounting wing plate and the second mounting wing plate are located on the seat body. One end of the second articulation shaft is detachably connected to the first mounting wing plate by bolts, and the other end of the second articulation shaft is detachably connected to the second mounting wing plate by bolts.

[0017] In one possible implementation, a damping bushing is also included, which is fitted between the second lifting lug and the connecting rod.

[0018] In one possible implementation, the telescopic component is a hydraulic cylinder having a telescopic end and a fixed end, the telescopic end being located near the front of the cab and the fixed end being located near the mounting base.

[0019] A second aspect of this application provides a vehicle, including:

[0020] A vehicle frame, on which a first hinge shaft is provided;

[0021] The cab, the front of which is hinged to the frame via the first hinge shaft;

[0022] A toolbox, which is mounted on the vehicle frame or the cab;

[0023] The cab tilting device described in any of the above-mentioned embodiments, wherein the cab tilting device is disposed within the toolbox.

[0024] This application provides a cab tilting device and a vehicle. The cab tilting device includes a mounting base and at least one telescopic member. The mounting base is detachably connected to the vehicle frame. One end of the telescopic member is rotatably connected to the mounting base, and the opposite end of the telescopic member is detachably rotatably connected to the front of the vehicle cab. The telescopic member is configured to: when shortened, drive the cab to rotate in a first direction around a first hinge axis that hinges the cab to the frame, so that the rear of the cab moves away from the frame; when extended, drive the cab to rotate in a second direction around the first hinge axis, so that the cab returns to its original position on the frame. In the cab tilting device of this application, when the cab of the vehicle needs to be tilted, the mounting base is first connected to the vehicle frame, and the end of the telescopic component away from the mounting base is rotatably connected to the front of the cab of the vehicle. Then, the telescopic component is activated to shorten it, so that the telescopic component can drive the cab to rotate around the first hinge axis on which the cab is hinged to the frame and in the first direction, so that the cab tilts relative to the frame to expose the frame below the cab, thereby realizing the tilting of the cab and facilitating the user to perform maintenance on the powertrain area. When the cab needs to be reset, firstly, the telescopic component is activated, extending it so that the component can rotate the cab around the first hinge axis in a second direction, opposite to the first direction. This resets the cab onto the frame. Once the cab is reset, the mounting base is removed from the frame, and the telescopic component is removed from the front of the cab. In other words, the cab tilting device of this application is only installed on the vehicle when the cab needs to be tilted. When the cab does not need to be tilted, the device is removed from the vehicle for storage. When the cab is tilted using this device, a hydraulic tilting system is no longer needed between the bottom of the cab and the frame. This avoids structural vibration and abnormal noise caused by the hydraulic cylinder during vehicle operation, thus solving the technical problem of structural vibration and abnormal noise caused by existing hydraulic cylinders. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 A schematic diagram of the cab tilting device provided in the embodiments of this application, installed on the vehicle before the cab tilts;

[0027] Figure 2 A schematic diagram of the cab tilting device provided in the embodiments of this application after the cab has been tilted onto the vehicle;

[0028] Figure 3 A schematic diagram of the cab tilting device provided for an embodiment of this application;

[0029] Figure 4 A schematic diagram of the structure of the telescopic component connected to the cab in the cab tilting device provided in the embodiments of this application;

[0030] Figure 5 A schematic diagram of the structure of the cab tilting device provided in the embodiments of this application, showing the mounting base connected to the vehicle frame;

[0031] Figure 6 A structural schematic diagram for analyzing the rollover force of a vehicle cab in an embodiment of this application;

[0032] Figure 7 A structural schematic diagram illustrating the force analysis of the driver's cab falling back in a vehicle, provided for an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10-Driver's cab;

[0035] 20 - Chassis; 21 - Front overhang beam; 22 - Front lower guard beam;

[0036] 30 - First hinge axis;

[0037] 100 - Mounting base; 110 - Connecting rod; 120 - First fixing rod; 121 - First bushing; 130 - Second fixing rod; 131 - Second bushing;

[0038] 200 - Telescopic component;

[0039] 300 - Hinge base; 310 - Base body; 320 - First mounting wing plate; 330 - Second mounting wing plate;

[0040] 400 - Second hinge axis;

[0041] 500 - First hanging lug;

[0042] 600 - Second hanging lug.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0045] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0046] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0048] Currently, medium and heavy trucks and other vehicles consist of a frame and a cab. The cab is hinged to the frame via an articulation shaft. A cab tilting hydraulic transmission system is installed between the bottom of the cab and the frame. By using the cab tilting hydraulic transmission system, the cab can be tilted to expose components such as the powertrain on the frame, making it easier to maintain the powertrain area.

[0049] The cab hydraulic tilting system consists of a cab tilting hydraulic cylinder, connecting oil pipes, etc. The cab tilting hydraulic cylinder is arranged on the frame and located at the bottom of the cab. The cab tilting hydraulic cylinder provides telescopic transmission function when the cab is raised and lowered.

[0050] Because the cab and the frame will move relative to each other when the vehicle is in motion, the cab tilting hydraulic cylinder will generate a damping force when the vehicle is in motion. After the cab is subjected to the damping force, the cab will produce structural vibration and abnormal noise, which will reduce the comfort of the people in the cab.

[0051] Furthermore, because the cab tilting hydraulic cylinder is located on the frame and at the bottom of the cab, this area has high temperatures, high dust density, and complex environmental conditions, resulting in a high after-sales failure rate for the cab tilting hydraulic cylinder. In addition, the limited space in this area makes after-sales maintenance and replacement of the cab tilting hydraulic cylinder difficult.

[0052] To address the technical problem of structural vibration and abnormal noise in the cab caused by existing hydraulic cylinders for cab tilting, this application proposes a cab tilting device and a vehicle. The cab tilting device includes a mounting base and at least one telescopic member. The mounting base is detachably connected to the vehicle frame. One end of the telescopic member is rotatably connected to the mounting base, and the opposite end of the telescopic member is detachably rotatably connected to the front of the vehicle cab. The telescopic member is configured to: when shortened, drive the cab to rotate in a first direction around a first hinge axis that hinges the cab to the frame, so that the rear of the cab moves away from the frame; when extended, drive the cab to rotate in a second direction around the first hinge axis, so that the cab returns to its original position on the frame.

[0053] In the cab tilting device of this application, when the cab of the vehicle needs to be tilted, the mounting base is first connected to the vehicle frame, and the end of the telescopic component away from the mounting base is rotatably connected to the front of the cab of the vehicle. Then, the telescopic component is activated to shorten it, so that the telescopic component can drive the cab to rotate around the first hinge axis on which the cab is hinged to the frame and in the first direction, so that the cab tilts relative to the frame to expose the frame below the cab, thereby realizing the tilting of the cab and facilitating the user to perform maintenance on the powertrain area. When the cab needs to be reset, firstly, the telescopic component is activated, extending it so that the component can rotate the cab around the first hinge axis in a second direction, opposite to the first direction. This resets the cab onto the frame. Once the cab is reset, the mounting base is removed from the frame, and the telescopic component is removed from the front of the cab. In other words, the cab tilting device of this application is only installed on the vehicle when the cab needs to be tilted. When the cab does not need to be tilted, the device is removed from the vehicle for storage. When the cab is tilted using this device, a hydraulic tilting system is no longer needed between the bottom of the cab and the frame. This avoids structural vibration and abnormal noise caused by the hydraulic cylinder during vehicle operation, thus solving the technical problem of structural vibration and abnormal noise caused by existing hydraulic cylinders.

[0054] Furthermore, since the cab tilting device of this application is only installed on the vehicle when the cab needs to be tilted, and is removed from the vehicle when the cab does not need to be tilted, the cab tilting device of this application is not located between the bottom of the frame and the cab. This solves the problem of high after-sales failure rate of the cab tilting hydraulic cylinder caused by the cab tilting hydraulic cylinder being in a complex environment for a long time, and also solves the problem of difficult after-sales maintenance and replacement of the cab tilting hydraulic cylinder.

[0055] Furthermore, the cab tilting device of this application can be removed from the vehicle and placed in the vehicle's toolbox, or it can be used as a maintenance tool in a vehicle repair shop. The vehicle itself is not equipped with the cab tilting device of this application, thereby reducing the overall vehicle cost.

[0056] The technical solution of the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0057] Reference Figures 1 to 7 As shown, Figure 1A schematic diagram of the cab tilting device provided in the embodiments of this application, installed on the vehicle before the cab tilts; Figure 2 A schematic diagram of the cab tilting device provided in the embodiments of this application after the cab has been tilted onto the vehicle; Figure 3 A schematic diagram of the cab tilting device provided for an embodiment of this application; Figure 4 A schematic diagram of the structure of the telescopic component connected to the cab in the cab tilting device provided in the embodiments of this application; Figure 5 A schematic diagram of the structure of the cab tilting device provided in the embodiments of this application, showing the mounting base connected to the vehicle frame; Figure 6 A structural schematic diagram for analyzing the rollover force of a vehicle cab in an embodiment of this application; Figure 7 A structural schematic diagram illustrating the force analysis of the driver's cab falling back in a vehicle, provided for an embodiment of this application.

[0058] In the embodiments of this application, reference is made to Figures 1 to 3 As shown, an embodiment of this application provides a cab tilting device, including a mounting base 100 and at least one telescopic member 200.

[0059] Mounting bracket 100 is used for detachable connection to the vehicle frame 20.

[0060] One end of the telescopic member 200 is rotatably connected to the mounting base 100, and the other end of the telescopic member 200 is detachably rotatably connected to the front of the vehicle cab 10. The telescopic member 200 is configured to: when shortened, drive the cab 10 to rotate in a first direction about a first hinge axis 30 on which the cab 10 is hinged to the frame 20, so that the rear of the cab 10 moves away from the frame 20; when extended, drive the cab 10 to rotate in a second direction about the first hinge axis 30, so that the cab 10 returns to its original position on the frame 20.

[0061] Mounting bracket 100 serves to mount telescopic component 200. Mounting bracket 100 is detachably connected to vehicle frame 20, for example, by bolt connection, snap-fit ​​connection, etc. Specifically, mounting bracket 100 can be detachably connected to front extension beam 21 of frame 20, and / or detachably connected to front lower guard beam 22.

[0062] The telescopic component 200 has the function of extending and shortening. The telescopic component 200 can be a hydraulic mechanism, a gear and rack mechanism, a telescopic mechanism, etc. Specifically, for example, the telescopic component 200 is a hydraulic cylinder.

[0063] One end of the telescopic member 200 is rotatably connected to the mounting base 100, and the other end of the telescopic member 200 away from the mounting base 100 is detachably rotatably connected to the front of the driver's cab 10 of the vehicle. The axis of rotation is the width direction of the vehicle. Both the rotatable connection and the detachable rotatable connection can be hinged.

[0064] When the telescopic component 200 is shortened, it causes the cab 10 to rotate around the first hinge axis 30 that is hinged to the frame 20 and in the first direction, so that the cab 10 is flipped relative to the frame 20 to expose the frame 20 below the cab 10. This allows the user to easily maintain the powertrain area on the frame 20 or to maintain the bottom of the cab 10. When the telescopic component 200 is shortened, it will rotate around the rotatable connection between the telescopic component 200 and the mounting seat 100, and around the rotatable connection between the telescopic component 200 and the front of the cab 10, so as to flip the cab 10 relative to the frame 20. During the flipping process, the angle between the telescopic component 200 and the frame 20 and the cab 10 continuously changes. The hinges at both ends of the telescopic component 200 allow the two ends of the telescopic component 200 to rotate with it, avoiding lateral force or jamming due to angle changes.

[0065] When the telescopic component 200 extends, it causes the cab 10 to rotate around the first hinge axis 30 in the second direction. It should be noted that the rotation direction in the second direction is opposite to the rotation direction in the first direction, so that the cab 10 can be reset on the frame 20.

[0066] In the cab tilting device of this application, when the cab 10 of the vehicle needs to be tilted, the mounting base 100 is first connected to the vehicle frame 20, and the end of the telescopic member 200 away from the mounting base 100 is rotatably connected to the front of the cab 10. Then, the telescopic member 200 is activated to shorten the telescopic member 200, so that the telescopic member 200 can drive the cab 10 to rotate around the first hinge axis 30 that the cab 10 is hinged to the frame 20 and in the first direction, so that the cab 10 is tilted relative to the frame 20 to expose the frame 20 below the cab 10, thereby realizing the tilting of the cab 10, which makes it convenient for the user to perform maintenance on the powertrain area. When the cab 10 needs to be reset, firstly, the telescopic member 200 is activated, causing it to extend. This allows the telescopic member 200 to rotate the cab 10 around the first hinge axis 30 in a second direction, opposite to the first direction. This resets the cab 10 onto the frame 20. Once the cab 10 is reset on the frame 20, the mounting base 100 is removed from the frame 20, and the telescopic member 200 is removed from the front of the cab 10. Therefore, the cab tilting device of this application is only installed on the vehicle when the cab 10 needs to be tilted; it does not require... When the cab 10 is to be tilted, the cab tilting device of this application is removed from the vehicle. The cab tilting device of this application can be removed from the vehicle for storage. When the cab 10 of the vehicle is tilted by the cab tilting device of this application, the hydraulic tilting system of the cab 10 does not need to be arranged between the bottom of the cab 10 and the frame 20. This avoids the structural vibration and abnormal noise of the cab 10 caused by the tilting hydraulic cylinder of the cab 10 when the vehicle is in motion. This solves the technical problem that the existing cab 10 tilting hydraulic cylinder will cause structural vibration and abnormal noise of the cab 10.

[0067] Furthermore, since the cab tilting device of this application is only installed on the vehicle when the cab 10 of the vehicle needs to be tilted, and the cab tilting device of this application is removed from the vehicle when the cab 10 does not need to be tilted, that is, the cab tilting device of this application is not arranged between the bottom of the frame 20 and the cab 10. This solves the problem of the high after-sales failure rate of the cab 10 tilting hydraulic cylinder caused by the cab 10 tilting hydraulic cylinder being in a complex environment for a long time, and also solves the problem of difficult after-sales maintenance and replacement of the cab 10 tilting hydraulic cylinder.

[0068] Furthermore, the cab tilting device of this application can be removed from the vehicle and placed in the vehicle's toolbox, or it can be used as a maintenance tool in a vehicle repair shop. The vehicle itself is not equipped with the cab tilting device of this application, thereby reducing the overall vehicle cost.

[0069] In another embodiment, reference Figure 3As shown, the mounting base 100 includes a connecting rod 110 and at least one first fixing rod 120. The ends of each telescopic member 200 away from the cab 10 are sequentially hinged to the connecting rod 110 along the length direction of the connecting rod 110. One end of each first fixing rod 120 is sequentially and spaced along the length direction of the connecting rod 110. The other end of each first fixing rod 120 is used for detachable connection to the vehicle frame 20.

[0070] In this embodiment, multiple first fixing rods 120 can be provided. The more rods there are, the more stable the connection will be. At the same time, it is also necessary to ensure the strength and rigidity of the first fixing rods 120. First fixing rods 120 with a larger diameter can be used to avoid breakage during use. The connection method between the first fixing rods 120 and the frame 20 can be bolt connection, snap-fit ​​connection, etc.

[0071] The number of telescopic components 200 can also be set to multiple. The more telescopic components 200 there are, the easier it is to tilt the cab 10.

[0072] It should be noted that when the first fixing rod 120 is connected to the frame 20, the connecting rod 110 will be parallel to the first hinge shaft 30, thereby ensuring that when the telescopic member 200 extends or retracts, it can drive the cab 10 to rotate around the first hinge shaft 30.

[0073] In another possible embodiment, refer to Figure 3 As shown, the mounting base 100 also includes at least one second fixing rod 130. One end of each second fixing rod 130 is sequentially and spaced on the connecting rod 110 along the length direction of the connecting rod 110. The other end of each second fixing rod 130 is used for detachable connection to the frame 20, and an angle is formed between the second fixing rod 130 and the first fixing rod 120.

[0074] In this embodiment, the second fixing rod 130 and the first fixing rod 120 form an angle, so that the second fixing rod 130, the first fixing rod 120 and the frame 20 are connected to form a triangle. The triangle has stability, thereby improving the stability of the entire mounting seat 100 fixed on the frame 20 and preventing the mounting seat 100 from falling off the frame 20 when the cab 10 is overturned.

[0075] Specifically, the first fixing rod 120 is detachably connected to the front extension beam 21 of the frame 20, and the second fixing rod 130 is detachably connected to the front lower protective beam 22 of the frame 20.

[0076] Similarly, multiple second fixing rods 130 can be set. The more rods there are, the more stable the connection will be. At the same time, it is also necessary to ensure the strength and rigidity of the second fixing rods 130. A second fixing rod 130 with a larger diameter can be used to avoid breakage during use. The connection between the second fixing rod 130 and the frame 20 can be a bolt connection, a snap-fit ​​connection, or other methods.

[0077] like Figure 6 As shown, the force analysis during the rollover process of the cab 10 is as follows:

[0078] 2×Fc flip × Lc flip = G×Lg flip

[0079] Feasibility analysis shows the following calculation of the forces acting on the hydraulic cylinders during the cab rollover process of a certain vehicle model:

[0080] G=10780N

[0081] Lg flip = 770mm

[0082] Lc flip = 238.5mm

[0083] Fc flip = (G × Lg flip) / (2 × Lc flip) = 17401N

[0084] Among them, Fc flipping is the hydraulic cylinder pull-back force; Lc flipping is the hydraulic cylinder pull-back lever arm; G is the cab 10 gravity; Lg flipping is the gravity lever arm.

[0085] The commonly used specifications for differential hydraulic cylinders (piston diameter 45mm, piston rod diameter 30mm, nominal pressure 28Mpa) can meet the requirements of hydraulic cylinder tension when the system pressure is 19.7Mpa. That is, when the hydraulic cylinder retracts, it can flip the cab 10 over.

[0086] like Figure 7 As shown, the force analysis during the fall of the cab 10 is as follows:

[0087] 2×Fc decline × Lc decline = G×Lg decline

[0088] Feasibility analysis: The force calculation for the hydraulic cylinder of a certain vehicle's cab tilting and falling back by 64° is as follows:

[0089] G=10780N

[0090] Lg fell back to 331mm

[0091] Lc fell back to 496mm

[0092] Fc pullback = (G × Lg pullback) / (2 × Lc pullback) = 3597N

[0093] Among them, Fc falling back is the lifting force of the hydraulic cylinder; Lc falling back is the lifting arm of the hydraulic cylinder; Lg falling back is the falling gravity arm; and Lg flipping back is the flipping gravity arm.

[0094] The commonly used specifications for differential hydraulic cylinders (piston diameter 45mm, piston rod diameter 30mm, nominal pressure 28Mpa) can meet the requirements of hydraulic cylinder thrust when the system pressure is 5.1Mpa. That is, when the hydraulic cylinder extends, it can reset the cab 10 onto the frame 20.

[0095] In one embodiment, reference is made to... Figure 5 As shown, a first bushing 121 is provided at one end of the first fixing rod 120 near the connecting rod 110, and the first fixing rod 120 is rotatably sleeved on the connecting rod 110 through the first bushing 121. A second bushing 131 is provided at one end of the second fixing rod 130 near the connecting rod 110, and the second fixing rod 130 is rotatably sleeved on the connecting rod 110 through the second bushing 131.

[0096] In this embodiment, the first fixing rod 120 is rotatably sleeved on the connecting rod 110 through the first bushing 121, and the second fixing rod 130 is rotatably sleeved on the connecting rod 110 through the second bushing 131. Thus, when the cab tilting device of this application is not needed, it is convenient to store the entire cab tilting device and reduce the footprint of the cab tilting device.

[0097] In some embodiments, reference is made to Figure 3 As shown, the first fixing rod 120 and the second fixing rod 130 are distributed in pairs at intervals on the connecting rod 110, and the telescopic member 200 is located between the pairs of the first fixing rod 120 and the second fixing rod 130.

[0098] In this embodiment, the paired fixed rods form a symmetrical support structure, which can evenly distribute the external load and avoid deformation or breakage caused by single-point force. Furthermore, the telescopic member 200 is located between the paired first fixed rod 120 and second fixed rod 130, thereby improving the support effect of the telescopic member 200 and preventing the connecting rod 110 from breaking due to insufficient support at the telescopic member 200 position.

[0099] In other embodiments, refer to Figure 4 As shown, it also includes a hinge seat 300, which is used to be installed at the front of the cab 10. A second hinge shaft 400 is provided on the hinge seat 300. A first lifting lug 500 is provided at one end of the telescopic member 200. One end of the telescopic member 200 is rotatably sleeved on the second hinge shaft 400 through the first lifting lug 500. A second lifting lug 600 is provided at the opposite end of the telescopic member 200. The opposite end of the telescopic member 200 is rotatably sleeved on the connecting rod 110 through the second lifting lug 600.

[0100] In this embodiment, one end of the telescopic member 200 is rotatably sleeved on the second hinge shaft 400 through the first lifting lug 500, so that the telescopic member 200 is hinged on the second hinge shaft 400. The other end of the telescopic member 200 is rotatably sleeved on the connecting rod 110 through the second lifting lug 600, so that the telescopic member 200 is hinged on the connecting rod 110.

[0101] In one possible embodiment, reference is made to... Figure 4 As shown, the articulated seat 300 includes a seat body 310, a first mounting wing plate 320, and a second mounting wing plate 330. The seat body 310 is located at the front of the cab 10. The first mounting wing plate 320 and the second mounting wing plate 330 are both located on the seat body 310. One end of the second articulation shaft 400 is detachably connected to the first mounting wing plate 320 by bolts, and the other end of the second articulation shaft 400 is detachably connected to the second mounting wing plate 330 by bolts.

[0102] In this embodiment, when it is necessary to flip the cab 10, one end of the telescopic member 200 is first rotated and sleeved on the second hinge shaft 400 through the first lifting lug 500, and then one end of the second hinge shaft 400 is bolted to the first mounting wing plate 320, and the other end of the second hinge shaft 400 is bolted to the second mounting wing plate 330.

[0103] After using the cab tilting device of this application, remove the bolts at both ends of the second hinge shaft 400, and then remove the first lifting lug 500 of the telescopic component 200 from the second hinge shaft 400.

[0104] In another possible embodiment, a damping bushing is also included, which is fitted between the second lifting lug 600 and the connecting rod 110.

[0105] In this embodiment, the vibration damping bushing absorbs vibration energy, suppresses mechanical impact and wear, and ensures the stability and durability of the connection structure. In addition, the vibration damping bushing can also suppress the radial runout and offset of the second lifting lug 600, and improve the positional accuracy of the second lifting lug 600.

[0106] The materials for the vibration damping bushing can be rubber, plastic, etc.

[0107] In some embodiments, the telescopic member 200 is a hydraulic cylinder having a telescopic end and a fixed end, with the telescopic end near the front of the cab 10 and the fixed end near the mounting base 100.

[0108] In this embodiment, the telescopic component 200 is a hydraulic cylinder, which drives the cab 10 to tilt by extending and retracting.

[0109] A second aspect of this application provides a vehicle including a frame 20, a cab 10, a toolbox, and a cab tilting device according to any of the above embodiments.

[0110] The frame 20 is provided with a first hinge shaft 30.

[0111] The front of the cab 10 is hinged to the frame 20 via the first hinge shaft 30.

[0112] The toolbox is mounted on the frame 20 or on the cab 10.

[0113] The cab tilting device is located inside the toolbox.

[0114] In the vehicle of this application embodiment, when the driver's cab 10 needs to be tilted, the driver's cab tilting device of this application embodiment is first taken out of the toolbox, then the mounting base 100 is connected to the vehicle frame 20, and the end of the telescopic member 200 away from the mounting base 100 is rotatably connected to the front of the driver's cab 10. Then the telescopic member 200 is activated to shorten the telescopic member 200, so that the telescopic member 200 can drive the driver's cab 10 to rotate around the first hinge axis 30 on the frame 20 and in the first direction, so that the driver's cab 10 is tilted relative to the frame 20 to expose the frame 20 below the driver's cab 10, thereby realizing the tilting of the driver's cab 10, which is convenient for the user to perform maintenance on the powertrain area. When the cab 10 needs to be reset, firstly, the telescopic member 200 is activated, extending it so that the telescopic member 200 can rotate the cab 10 around the first hinge axis 30 in a second direction. The direction of rotation in the second direction is opposite to the direction of rotation in the first direction, thereby resetting the cab 10 onto the frame 20. After the cab 10 is reset onto the frame 20, the mounting base 100 is removed from the frame 20, and the telescopic member 200 is removed from the front of the cab 10. That is, the cab tilting device of this application is only installed on the vehicle when the cab 10 needs to be tilted, and is not required to tilt the vehicle. When the cab 10 is tilted, the cab tilting device of this application is removed from the vehicle, and can be stored in a toolbox. When the cab 10 of the vehicle is tilted by the cab tilting device of this application, the hydraulic tilting system of the cab 10 does not need to be arranged between the bottom of the cab 10 and the frame 20. This avoids the structural vibration and abnormal noise of the cab 10 caused by the tilting hydraulic cylinder of the cab 10 when the vehicle is in motion, and solves the technical problem that the existing cab 10 tilting hydraulic cylinder will cause structural vibration and abnormal noise of the cab 10.

[0115] It should be noted that after the cab tilting device of this application is removed from the vehicle, it can be placed in the vehicle's toolbox, or the cab tilting device of this application can be used as a maintenance tool for the vehicle repair station. The vehicle itself does not need to be equipped with the cab tilting device of this application, thereby reducing the overall vehicle cost.

[0116] Furthermore, since the cab tilting device of this application is only installed on the vehicle when the cab 10 of the vehicle needs to be tilted, and the cab tilting device of this application is removed from the vehicle when the cab 10 does not need to be tilted, that is, the cab tilting device of this application is not arranged between the bottom of the frame 20 and the cab 10. This solves the problem of the high after-sales failure rate of the cab 10 tilting hydraulic cylinder caused by the cab 10 tilting hydraulic cylinder being in a complex environment for a long time, and also solves the problem of difficult after-sales maintenance and replacement of the cab 10 tilting hydraulic cylinder.

[0117] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0118] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A cab rollover device, characterized by, The utility model relates to a kind of telescopic device for vehicle cab, including: Mounting seat (100) for detachable connection on the frame (20) of vehicle; At least one telescopic piece (200), one end of the telescopic piece (200) is rotatably connected on the mounting seat (100), and the opposite end of the telescopic piece (200) is used for rotatably detachable connection on the front of the cab (10) of the vehicle, and the telescopic piece (200) is configured to: When shortening, it is used to drive the cab (10) to rotate around the first hinged shaft (30) on which the cab (10) is hinged on the frame (20) in a first direction, so that the rear of the cab (10) is away from the frame (20); When lengthening, it is used to drive the cab (10) to rotate around the first hinged shaft (30) in a second direction, so that the cab (10) is reset on the frame (20).

2. A cab roll-over device according to claim 1, characterised in that, The mounting seat (100) includes a connecting rod (110) and at least one first fixed rod (120), one end of each telescopic piece (200) away from the cab (10) is hingedly connected on the connecting rod (110) in sequence along the length direction of the connecting rod (110), one end of each first fixed rod (120) is arranged on the connecting rod (110) in sequence along the length direction of the connecting rod (110), and the other end of each first fixed rod (120) is used for detachable connection on the frame (20).

3. A cab roll-over device according to claim 2, characterised in that, The mounting seat (100) further includes at least one second fixed rod (130), one end of each second fixed rod (130) is arranged on the connecting rod (110) in sequence along the length direction of the connecting rod (110), the other end of each second fixed rod (130) is used for detachable connection on the frame (20), and an included angle is formed between the second fixed rod (130) and the first fixed rod (120).

4. A cab roll-over device according to claim 3, characterised in that, The first fixed rod (120) is provided with a first shaft sleeve (121) at one end close to the connecting rod (110), and the first fixed rod (120) is rotatably sleeved on the connecting rod (110) through the first shaft sleeve (121), and the second fixed rod (130) is provided with a second shaft sleeve (131) at one end close to the connecting rod (110), and the second fixed rod (130) is rotatably sleeved on the connecting rod (110) through the second shaft sleeve (131).

5. The cab rollover apparatus of claim 3, wherein The first fixed rod (120) and the second fixed rod (130) are distributed in pairs on the connecting rod (110), and the telescopic piece (200) is located between the first fixed rod (120) and the second fixed rod (130) in pairs.

6. The cab rollover apparatus of claim 2, wherein Further comprising a hinged seat (300) arranged at the front of the cab (10), the hinged seat (300) being provided with a second hinged shaft (400), one end of the telescopic member (200) being provided with a first lifting lug (500), the one end of the telescopic member (200) being rotatably sleeved on the second hinged shaft (400) through the first lifting lug (500), the other end of the telescopic member (200) being provided with a second lifting lug (600), the other end of the telescopic member (200) being rotatably sleeved on the connecting rod (110) through the second lifting lug (600).

7. A cab roll-over device according to claim 6, characterised in that, The hinged seat (300) comprises a seat body (310), a first mounting wing plate (320) and a second mounting wing plate (330), the seat body (310) being arranged at the front of the cab (10), the first mounting wing plate (320) and the second mounting wing plate (330) being arranged on the seat body (310), one end of the second hinged shaft (400) being detachably connected to the first mounting wing plate (320) through bolts, the other end of the second hinged shaft (400) being detachably connected to the second mounting wing plate (330) through bolts.

8. A cab roll-over device according to claim 6, characterised in that, Further comprising a damping shaft sleeve sleeved between the second lifting lug (600) and the connecting rod (110).

9. A cab tilting device according to any one of claims 1 to 8, characterised in that, The telescopic member (200) is a hydraulic cylinder, the hydraulic cylinder having a telescopic end and a fixed end, the telescopic end being close to the front of the cab (10), the fixed end being close to the mounting seat (100).

10. A vehicle characterized by comprising: Further comprising a vehicle frame (20) provided with a first hinged shaft (30); a cab (10) having a front hinged to the vehicle frame (20) through the first hinged shaft (30); a tool box arranged on the vehicle frame (20) or the cab (10); the cab turnover device according to any one of claims 1 to 9, the cab turnover device being arranged in the tool box.

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