Engineering vehicle

Abstract

The invention relates to an engineering vehicle which comprises a cab, a first seat (1) and a second seat (2), and the cab is provided with a side wall (100); the first seat (1) is mounted in a cab; the second seat (2) is installed in a cab and located on one side of the first seat (1). Wherein the second seat (2) comprises a seat body (2a) and an installation structure (2b) connected with the seat body (2a), the installation structure (2b) has a first state and a second state, the installation structure (2b) is connected with the side wall (100) in the first state so that the second seat (2) can be fixed to the side wall (100), and the installation structure (2b) is disconnected with the side wall (100) in the second state so that the second seat (2) can be detached from the side wall (100). The detachable second seat (2) is arranged, so that the flexibility of the layout in the cab can be improved, and the operation requirements of the vehicle under different working conditions are met.

Description

Technical Field

[0001] The present application relates to the technical field of construction machinery, and particularly to an engineering vehicle. Background Art

[0002] In emergency rescue scenarios such as natural disasters and emergencies, multi-purpose engineering vehicles need to quickly switch between various operation modes such as road clearance, debris excavation, and material transportation. To adapt to the complex and changeable environment, such vehicles usually need to switch between different operation modes accordingly, and thus need to change the internal structure such as the cockpit layout so that the operator can select the best operation position according to the specific working conditions. However, in the cockpit design of the related art, the spatial arrangement of the seat system often adopts a static fixed mode. When azimuth adjustment is required, the spatial interference between the seat components will limit the effective adjustment range.

[0003] It should be noted that the information disclosed in the background art part of the present application is only intended to increase the understanding of the overall background of the present application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0004] The present application provides an engineering vehicle, in which a detachable seat is arranged in the cab to improve the flexibility of the cab layout and meet the operation requirements of the vehicle under different working conditions.

[0005] According to one aspect of the present application, there is provided an engineering vehicle, including:

[0006] A cab having side walls;

[0007] A first seat installed in the cab; and

[0008] A second seat installed in the cab and located on one side of the first seat;

[0009] Wherein, the second seat includes a seat body and a mounting structure connected to the seat body. The mounting structure has a first state and a second state. In the first state, the mounting structure is connected to the side wall to fix the second seat on the side wall. In the second state, the mounting structure is disconnected from the side wall so that the second seat can be removed from the side wall.

[0010] In some embodiments, the mounting structure includes:

[0011] A first limiting structure. In the first state of the mounting structure, the first limiting structure is connected to the side wall and positioned in a first direction to limit the movement of the second seat relative to the side wall in the first direction. In the second state of the mounting structure, the first limiting structure is disconnected from the side wall; and

[0012] The second limiting structure, in the first state of the mounting structure, is connected to the side wall and positioned in the second direction to limit the movement of the second seat relative to the side wall in the second direction. In the second state of the mounting structure, the second limiting structure is disconnected from the side wall.

[0013] Wherein, the first direction and the second direction intersect.

[0014] In some embodiments, the first direction is the horizontal direction and the second direction is the vertical direction.

[0015] In some embodiments, a support seat protruding towards the second seat is provided on the side wall.

[0016] A protruding portion extending in the second direction is provided on the support seat, and a first mating hole extending in the second direction is provided on the first limiting structure. In the first state, the protruding portion is embedded in the first mating hole; and / or

[0017] An installation hole extending in the first direction is provided on the support seat, a second mating hole extending in the first direction is provided on the second limiting structure, and the mounting structure further includes a quick-release pin. In the first state, the installation hole is aligned with the second mating hole, and the quick-release pin is inserted into the installation hole and the second mating hole.

[0018] In some embodiments, at least two spaced-apart protruding portions are provided on the support seat in the first direction and / or the second direction, and at least two first mating holes corresponding to the at least two protruding portions are provided on the first limiting structure.

[0019] In some embodiments, the mounting structure further includes an energy absorption device, which in the first state is configured to absorb at least part of the impact energy transmitted between the seat body and the side wall.

[0020] In some embodiments, the energy absorption device is one of a hydraulic energy absorber, a spring-damper energy absorber, a shear energy absorber, and a friction energy absorber.

[0021] In some embodiments, the first limiting structure includes a first limiting portion and a second limiting portion spaced apart in the second direction, and the first limiting portion is located above the second limiting portion. In the first state, both the first limiting portion and the second limiting portion are configured to be connected to the side wall. The mounting structure further includes a guiding device, which includes a guide rail and a sliding portion sleeved on the outer periphery of the guide rail. The guide rail is connected between the first limiting portion and the second limiting portion, the sliding portion is connected to the seat body and can slide relative to the guide rail, one end of the energy absorption device is connected to the first limiting portion, and the other end is connected to the sliding portion.

[0022] In some embodiments, the guiding device includes a connecting portion, and two groups of parallel guide rails and sliding portions. The connecting portion is connected between the ends of the two sliding portions that are away from the first limiting portion. The two ends of the energy absorption device are respectively connected to the first limiting portion and the connecting portion.

[0023] In some embodiments, the engineering vehicle is a multi-purpose engineering vehicle. The first seat is the driver's seat, and the first seat is rotatably installed in the cab. The second seat is the co-driver's seat.

[0024] Based on the above technical solutions, the present application provides an engineering vehicle, in which a first seat and a second seat are provided in the cab, and the second seat is detachably installed on the side wall of the cab. In some working conditions where it is necessary to expand the operating space in the cab, the available space in the cab can be released by removing the second seat. For example, when it is necessary to temporarily accommodate materials in the cab, install operating equipment required under special working conditions, or adjust the orientation of the first seat, removing the second seat can create corresponding space. Especially for engineering vehicles operating in narrow environments, setting a detachable second seat can greatly improve the flexibility of the layout in the cab and expand the range of applicable working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0026] Figure 1 Shows a schematic layout diagram in the cab in an embodiment of the present application.

[0027] Figure 2 Shows a schematic diagram of the setting of the protruding portion on the support seat in an embodiment of the present application.

[0028] Figure 3 Shows a schematic diagram of the support seat in an embodiment of the present application.

[0029] Figure 4 Shows a schematic diagram of the installation structure in an embodiment of the present application.

[0030] Figure 5 Shows a schematic diagram of the second limiting structure in an embodiment of the present application.

[0031] Figure 6 Shows a schematic diagram of the connection of the first limiting structure, the second limiting structure and the support seat in an embodiment of the present application.

[0032] Figure 7 Shows a first-angle view of the second seat in an embodiment of the present application.

[0033] Figure 8 Shows a second angular view of the second seat in an embodiment of the present application. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 thus should not be construed as limiting the protection scope of the present application.

[0036] In the application of engineering vehicles, it is usually necessary to face the situation of operating in different environments, which puts forward requirements for the variability of the vehicle structure. Especially in some working conditions that require steering operations, it is necessary to adjust the layout of the seats in the cab.

[0037] Based on this, the present application provides an engineering vehicle, in which a detachable seat is arranged in the cab so as to adjust the layout in the cab based on different working conditions.

[0038] In some embodiments of the engineering vehicle provided by the present application, the engineering vehicle includes a cab, a first seat 1 and a second seat 2. Refer to Figure 1 , which shows the layout in the cab in some embodiments. As shown in the figure, the cab has a side wall 100. The first seat 1 is installed in the cab, and the second seat 2 is installed in the cab and is located on one side of the first seat 1. Among them, the second seat 2 includes a seat body 2a and a mounting structure 2b connected to the seat body 2a. The mounting structure 2b has a first state and a second state. In the first state, the mounting structure 2b cooperates with the side wall 100 to fix the second seat 2 on the side wall 100. In the second state, the mounting structure 2b is disconnected from the side wall 100 so that the second seat 2 can be removed from the side wall 100.

[0039] As an example, the side wall 100 can be the rear side wall of the cab, the first seat 1 can be the driver's seat, and the second seat 2 can be the co-driver's seat. The rear side of the second seat 2 is connected to the rear side wall of the cab, and the mounting structure 2b is connected between the rear side of the seat body 2a and the rear side wall. For example, the backrest portion of the second seat 2 is connected to the rear side wall of the cab.

[0040] It should be noted that in the embodiments of the present application, the rear side wall of the cab is defined based on the initial installation state of the seats. In this initial installation state, the side wall of the cab facing the front sides of the first seat 1 and the second seat 2 is the front side wall, and the side wall of the cab facing the rear sides is the rear side wall. Herein, the front side of the seat refers to the side for carrying the driver, and the rear side is the side opposite to the front side.

[0041] In the embodiments of the present application, the mounting structure 2b of the second seat 2 has a first state of being connected to the side wall 100 and a second state of being disconnected from it, so that the connection situation between the second seat 2 and the side wall 100 can be changed by changing the state of the mounting structure 2b, realizing the detachable installation of the second seat 2 relative to the side wall 100. This structure of mounting the seat on the side wall (wall-mounted installation), compared with mounting the seat on the cab floor in the related art, can more effectively buffer the impact force along the extending direction of the side wall (usually the vertical direction), thus bringing a better driving experience and safety for the driver.

[0042] Herein, by setting the second seat 2 to be detachable relative to the side wall 100, in some working conditions where it is necessary to expand the operating space in the cab, the available space in the cab can be released by detaching the second seat 2. For example, when materials need to be temporarily accommodated in the cab or operating equipment required for special working conditions needs to be installed, the corresponding space can be vacated by removing the second seat 2. Or, when the engineering vehicle needs to change the operation direction (such as changing from forward operation to reverse operation), the orientation of the first seat 1 needs to be adjusted accordingly (such as rotating 180 degrees). At this time, removing the second seat 2 can provide sufficient space for the operation of adjusting the orientation of the first seat 1. Especially for engineering vehicles operating in narrow environments (which usually have a smaller-sized cab), it can effectively avoid the space interference of the second seat 2 to the first seat 1.

[0043] Herein, the installation method of the first seat 1 in the cab can also be set according to requirements.

[0044] For example, in some embodiments of the present application, the first seat 1 is rotatably mounted in the cab, so as to facilitate timely adjustment of the position and orientation of the first seat 1 in the face of different working conditions, and realize flexible adjustment of the seat layout in the cab. By adjusting the position and state of the seats in the cab, the layout in the cab can be flexibly adjusted, effectively expanding the range of working conditions applicable to the engineering vehicle.

[0045] In some embodiments, the engineering vehicle of the present application can be a multi-purpose engineering vehicle, which can be used to complete a variety of rescue tasks, such as road clearance, debris excavation, material transportation, etc.

[0046] In some embodiments, the mounting structure 2b includes a first limiting structure 21 and a second limiting structure 22. In the first state of the mounting structure 2b, the first limiting structure 21 is connected to the side wall 100 and positioned in the first direction to limit the movement of the second seat 2 relative to the side wall 100 in the first direction. In the second state of the mounting structure 2b, the first limiting structure 21 is disconnected from the side wall 100. In the first state of the mounting structure 2b, the second limiting structure 22 is connected to the side wall 100 and positioned in the second direction to limit the movement of the second seat 2 relative to the side wall 100 in the second direction. In the second state of the mounting structure 2b, the second limiting structure 22 is disconnected from the side wall 100. Wherein, the first direction and the second direction intersect.

[0047] In such as Figure 2 、 Figure 3 、 Figure 4 and Figure 7 In some embodiments shown, the first direction is shown as the x direction and the second direction is shown as the y direction.

[0048] Here, the specific orientations of the first direction and the second direction can be adjusted according to the cab layout and the seat structure design. For example, the angle between the first direction and the second direction can be less than 90 degrees or greater than 90 degrees, or the first direction and the second direction can also be perpendicular to each other.

[0049] Specifically, in some embodiments, the first direction is the horizontal direction and the second direction is the vertical direction.

[0050] As an example, the first direction can be the length or width direction of the engineering vehicle, and the second direction can be the height direction of the engineering vehicle.

[0051] In an embodiment of the present application, the mounting structure 2b is provided to include a first limiting structure 21 and a second limiting structure 22, and these two limiting structures are respectively used to limit the second seat 2 relative to the side wall 100 in different directions. When the second seat 2 is mounted on the side wall 100, the limiting in two directions can provide sufficient restraint for the second seat 2 to ensure the stability of its installation.

[0052] Among them, there can be various choices for the specific structures and arrangement forms of the first limiting structure 21 and the second limiting structure 22.

[0053] For example, the first limiting structure 21 and / or the second limiting structure 22 can be set as magnetic attraction members, and corresponding magnetic attraction structures are provided on the side wall 100, so that the connection between the second seat 2 and the side wall 100 can be realized through magnetic attraction force.

[0054] Alternatively, the connection between the first limiting structure 21 and / or the second limiting structure 22 and the side wall 100 can also be set to be realized through forms such as snap connection and pin-hole mating connection.

[0055] Or, the first limiting structure 21 and the second limiting structure 22 can be arranged at intervals or can be set to be connected to each other.

[0056] Refer to Figure 1 As shown, in some embodiments, a support seat 101 protruding towards the second seat 2 is provided on the side wall 100. The support seat 101 protruding from the main body of the side wall 100 can provide stable support for the second seat 2, thus facilitating the disassembly and assembly of the second seat 2.

[0057] In some examples, refer to Figure 2 and Figure 3 As shown, a protruding portion 101a extending along the second direction is provided on the support seat 101. Refer to Figure 4 As shown, a first mating hole 201 extending along the second direction is provided on the first limiting structure 21. In the first state, the protruding portion 101a is inserted into the first mating hole 201.

[0058] Here, by inserting the protruding portion 101a into the first mating hole 201, or by lifting the first limiting structure 21 so that the first mating hole 201 is disengaged from the protruding portion 101a, the connection and disconnection between the first limiting structure 21 and the support seat 101 can be realized, which helps to achieve the rapid disassembly and assembly of the second seat 2.

[0059] The specific structure of the support base 101 can have various designs. For example, it can be designed as a protruding square structure, a plate-like structure, or a stepped structure, so that the flat surfaces on these structures can be used as support surfaces to provide support for the second seat 2. Alternatively, the support base 101 can also be designed as a structure with an arc-shaped support surface, and correspondingly, a corresponding mating surface can be designed on the second seat 2 to achieve stable mating and support.

[0060] In the embodiment of the present invention, the protrusion 101a can be a structure directly formed on the support surface of the support base 101. For example, the protrusion 101a can be integrally formed on the support surface of the support base 101. Or, as Figure 3 shown, the support base 101 can be arranged to include a support base body and a first base 1011 and a second base 1012 mounted on the support base body, and the protrusions 101a are provided on both the first base 1011 and the second base 1012. Among them, the structures of the first base 1011 and the second base 1012 can be designed according to the cab layout and the installation requirements of the second seat 2, such as a plate-like structure, a plate-like structure with bends, an I-shaped structure, etc.

[0061] In some other examples, referring to Figure 2 shown, the support base 101 is provided with a mounting hole 101b extending in the first direction. Referring to Figure 5 and Figure 6 shown, the second limiting structure 22 is provided with a second mating hole 202 extending in the first direction. As Figure 6 shown, the mounting structure 2b further includes a quick-release pin 23. In the first state, the mounting hole 101b is aligned with the second mating hole 202, and the quick-release pin 23 is inserted into the mounting hole 101b and the second mating hole 202. Here, by operating the insertion and removal of the quick-release pin 23, the connection and disconnection between the second limiting structure 22 and the support base 101 can be achieved, which helps to realize the quick installation and removal of the second seat 2.

[0062] Among them, the quick-release pin 23 can adopt an elastic pin to improve the reliability of the pin-hole fit.

[0063] In the embodiment of the present application, the second seat 2 is limited in two directions through the mating connection of the protrusion and the hole and the mating connection of the pin and the hole, which helps to realize the quick installation and quick removal of the second seat 2 and effectively improves the efficiency of the operation condition switching of the engineering vehicle.

[0064] When it is necessary to switch the working condition (for example, it is necessary to rotate the first seat 1 to switch to the reverse operation condition), if it is necessary to remove the second seat 2 from the side wall 100, the connection between the second limiting structure 22 and the support base 101 (pull out the quick-release pin 23) and the connection between the first limiting structure 21 and the support base 101 (lift the first limiting structure 21) can be disconnected in sequence. After the reverse operation is completed, the second seat 2 can be reinstalled on the side wall 100. At this time, the first limiting structure 21 and the support base 101, and the second limiting structure 22 and the support base 101 can be connected in sequence.

[0065] In the embodiment where the support base 101 includes the first base 1011, refer to Figure 2 As shown, both the convex portion 101a and the mounting hole 101b can be provided on the first base 1011. Then, in the first state, both the first limiting structure 21 and the second limiting structure 22 are connected to the support base 101 through the first base 1011, realizing the limitation of the second seat 2 in the first direction and the second direction.

[0066] In some embodiments, in the first direction and / or the second direction, at least two spaced-apart convex portions 101a are provided on the support base 101, and at least two first mating holes 201 corresponding to the at least two convex portions 101a are provided on the first limiting structure 21.

[0067] As an example, refer to Figure 3 As shown, in the first direction, two convex portions 101a are provided on the first base 1011 of the support base 101; in the second direction, the support base 101 is provided with the first base 1011 and the second base 1012, and among them, two convex portions 101a are also provided on the second base 1012.

[0068] Through the cooperation between the convex portion 101a on the support base 101 and the first mating hole 201 on the first limiting structure 21, the limitation of the second seat 2 in the first direction can be realized. By setting at least two groups of mutually cooperating convex portions 101a and first mating holes 201, the limitation stability of the second seat 2 in the first direction can be improved. According to the size of the second seat 2, different numbers and intervals of the convex portions 101a and the first mating holes 201 can be appropriately arranged. For example, three groups, four groups, or five groups of cooperating points can be arranged along the first direction and / or the second direction to ensure the installation stability of the second seat 2.

[0069] In some embodiments, the number of the cooperation points between the mounting hole 101b and the second mating hole 202 can also be set as needed to improve the limitation stability of the second seat 2 in the second direction.

[0070] In some embodiments, the mounting structure 2b further includes an energy absorption device 25. In the first state, the energy absorption device 25 is configured to absorb at least part of the impact energy transmitted between the seat body 2a and the side wall 100.

[0071] By providing the energy absorption device 25, the impact force transmitted from the seat body 2a to the side wall 100 caused by the driver sitting on the seat, or the impact force transmitted from the side wall 100 to the seat body 2a due to vehicle jolts, can be absorbed and dissipated by the energy absorption device 25 to achieve buffering, which helps to improve the driving experience of the driver and extend the service life of the connection structure between the second seat 2 and the side wall 100.

[0072] Among them, there are various choices for the specific form of the energy absorption device 25.

[0073] For example, in some embodiments, the energy absorption device 25 is one of a hydraulic energy absorber, a spring-damper energy absorber, a shear energy absorber, and a friction energy absorber.

[0074] The hydraulic energy absorber absorbs kinetic energy through the compression, throttling, or flow damping of a fluid (such as hydraulic oil or gas), and may specifically include types such as a hydraulic shock absorber, a collapsible hydraulic energy absorber, and a magnetorheological / electrorheological fluid energy absorber.

[0075] The spring-damper energy absorber absorbs energy through the combination of the deformation of an elastic element and damping. For example, it can be an air spring or a structure combining a helical spring and a damper.

[0076] The shear energy absorber dissipates energy through the shear plastic deformation or fracture of a material. For example, it may include structures such as a shear tube and a shear bolt.

[0077] The friction energy absorber dissipates kinetic energy through heat generation by sliding friction at a solid interface, and may specifically be in the form of laminated friction plates, a pre-tightened bolt friction device, etc.

[0078] The above energy absorption devices can be selected according to actual needs or used in combination (such as a hydraulic-friction composite energy absorber) to adapt the energy absorption effect to different specifications and models of engineering vehicles or different operating conditions.

[0079] In some embodiments, such as Figure 4As shown, the first limiting structure 21 includes a first limiting portion 211 and a second limiting portion 212 that are spaced apart in the second direction, and the first limiting portion 211 is located above the second limiting portion 212. In the first state, both the first limiting portion 211 and the second limiting portion 212 are configured to be connected to the side wall 100. The mounting structure 2b further includes a guiding device 24, and the guiding device 24 includes a guide rail 241 and a sliding portion 242 sleeved on the outer periphery of the guide rail 241. The guide rail 241 is connected between the first limiting portion 211 and the second limiting portion 212. The sliding portion 242 is connected to the seat body 2a and can slide relative to the guide rail 241. One end of the energy absorption device 25 is connected to the first limiting portion 211, and the other end is connected to the sliding portion 242.

[0080] Here, the specific shapes and structures of the first limiting portion 211 and the second limiting portion 212 can be designed according to requirements. For example, they can be designed as plate-shaped as shown in Figure 4 .

[0081] In an embodiment where the second limiting structure 22 is interconnected with the first limiting structure 21, referring to Figures 4 to 6 as shown, the second limiting structure 22 can be connected to the first limiting portion 211, for example, integrally formed or detachably connected.

[0082] Reference can be made to a specific example shown in Figure 4 and Figure 5 . A rectangular mounting groove 203 is provided on the first limiting portion 211. The second limiting structure 22 is arranged as an L-shaped structure. One arm of the L-shaped structure can be engaged with the mounting groove 203, and a connection hole 204 is provided thereon. Thus, the second limiting structure 22 can be fixed to the first limiting portion 211 through the connection hole 204 by means such as bolt connection or rivet connection. The second mating hole 202 is then provided on the other arm of the L-shaped structure. The structure after the first limiting portion 211, the second limiting structure 22, and the support seat 101 are connected can be referred to Figure 6 .

[0083] In the above embodiment, by providing the guiding device 24 between the first limiting portion 211 and the second limiting portion 212 and setting the sliding portion 242 to be connected to the seat body 2a, the seat body 2a can have a certain sliding space in the second direction, so that the seat body 2a has a certain movement distance when subjected to an impact along the second direction to achieve buffering. And by connecting the energy absorption device 25 between the first limiting portion 211 and the sliding portion 242, the impact energy between the seat body 2a and the side wall 100 can be further absorbed by the energy absorption device 25, so that the second seat 2 has better anti-impact performance.

[0084] Referring to Figure 4As shown, in some embodiments, the guiding device 24 includes a connecting portion 243, and two sets of parallel guide rails 241 and sliding portions 242. The connecting portion 243 is connected between the ends of the two sliding portions 242 that are away from the first limiting portion 211. Two ends of the energy absorption device 25 are respectively connected to the first limiting portion 211 and the connecting portion 243. The guiding device 24 functions to guide the movement of the seat body 2a in the second direction. The two sets of parallel guide rails 241 and sliding portions 242 can further improve the guiding stability, and the connecting portion 243 between the two sliding portions 242 can provide a stable installation structure for the energy absorption device 25, thereby helping to improve the reliability and buffering performance of the overall structure of the second seat 2.

[0085] As an example, two ends of the energy absorption device 25 can be respectively connected to the first limiting portion 211 and the connecting portion 243 by means of bolt or pin connection.

[0086] When the engineering vehicle is subjected to a strong impact, the driver on the second seat 2 slides along the guide rail 241 together with the seat body 2a (for example, slides vertically downward). At the same time, the internal material of the energy absorption device 25 absorbs the impact energy through stretching, shearing and other responses. Under the action of the energy absorption device 25, the impact energy transmitted to the human body is attenuated.

[0087] If the engineering vehicle needs to face a scenario with a large impact force during application, the number of guiding devices 24 or energy absorption devices 25 can also be further increased to obtain better buffering performance, which is beneficial to protecting the equipment and the driver.

[0088] In some embodiments, referring to Figure 4 As shown, the installation structure 2b further includes a mounting plate 26. The mounting plate 26 is connected between the sliding portion 242 and the seat body 2a. By disassembling the mounting plate 26, the connection between the entire installation structure 2b and the seat body 2a can be disconnected, facilitating the maintenance of the installation structure 2b and the seat body 2a respectively.

[0089] In some embodiments, a safety belt is further provided on the first seat 1 and / or the second seat 2, so as to provide further protection for the driver. The safety belt can be a three-point safety belt, a four-point safety belt or a five-point safety belt.

[0090] Referring to Figure 7 As shown, in some embodiments, the second seat 2 further includes a support frame 2c. The support frame 2c is connected between the seat body 2a and the installation structure 2b. The support frame 2c can be a metal bracket to provide sufficient rigid support for the seat body 2a.

[0091] In some examples, the mounting plate 26 of the connection structure 2b is connected to the support frame 2c, for example, by bolt connection.

[0092] In some embodiments, with reference to Figure 8 as shown, the seat body 2a includes a seat cushion 21a, a backrest 22a, a headrest 23a and a seat belt 24a. The seat cushion 21a and the backrest 22a are both mounted on the support frame 2c. The headrest 23a is detachably mounted on the backrest 22a, and the height of the headrest 23a relative to the backrest 22a is adjustable to meet the headrest needs of drivers of different heights. Both ends of the seat belt 24a are connected to the support frame 2c. Among them, the seat body 2a can be set as a foldable structure to further facilitate the handling and storage of the second seat during disassembly and assembly. Specifically, foldable means that the included angle between the seat cushion 21a and the backrest 22a can be adjusted and minimized to be close to 0 degrees.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that without departing from the principle of the present application, it is still possible to modify the specific implementation manners of the present application or perform equivalent replacements for some technical features, and these modifications and equivalent replacements should all be covered by the scope of the technical solutions claimed in the present application.

Claims

1. An engineering vehicle, characterized in that, Comprising: A cab having side walls (100); A first seat (1) installed in the cab; And A second seat (2) installed in the cab and located on one side of the first seat (1); Wherein, the second seat (2) includes a seat body (2a) and a mounting structure (2b) connected to the seat body (2a), the mounting structure (2b) has a first state and a second state, in the first state the mounting structure (2b) is connected to the side wall (100) to fix the second seat (2) to the side wall (100), and in the second state the mounting structure (2b) is disconnected from the side wall (100) to enable the second seat (2) to be removed from the side wall (100).

2. The construction vehicle according to claim 1, wherein The mounting structure (2b) includes: A first limiting structure (21), in the first state of the mounting structure (2b), the first limiting structure (21) is connected to the side wall (100) and positioned in a first direction to limit the movement of the second seat (2) relative to the side wall (100) in the first direction, and in the second state of the mounting structure (2b), the first limiting structure (21) is disconnected from the side wall (100); and A second limiting structure (22), in the first state of the mounting structure (2b), the second limiting structure (22) is connected to the side wall (100) and positioned in a second direction to limit the movement of the second seat (2) relative to the side wall (100) in the second direction, and in the second state of the mounting structure (2b), the second limiting structure (22) is disconnected from the side wall (100), Wherein, the first direction and the second direction intersect.

3. The construction vehicle according to claim 2, wherein, The first direction is a horizontal direction and the second direction is a vertical direction.

4. The construction vehicle according to claim 2, characterized in that, A support seat (101) protruding towards the second seat (2) is provided on the side wall (100), A protruding portion (101a) extending along the second direction is provided on the support seat (101), and a first mating hole (201) extending along the second direction is provided on the first limiting structure (21). In the first state, the protruding portion (101a) is inserted into the first mating hole (201); and / or A mounting hole (101b) extending along the first direction is provided on the support seat (101), a second mating hole (202) extending along the first direction is provided on the second limiting structure (22), and the mounting structure (2b) further includes a quick-release pin (23). In the first state, the mounting hole (101b) is aligned with the second mating hole (202), and the quick-release pin (23) is inserted into the mounting hole (101b) and the second mating hole (202).

5. The construction vehicle according to claim 4, characterized in that, In the first direction and / or the second direction, at least two spaced-apart protrusions (101a) are provided on the support base (101), and at least two first mating holes (201) corresponding to the at least two protrusions (101a) are provided on the first limiting structure (21).

6. The construction vehicle according to claim 2, wherein The mounting structure (2b) further includes an energy absorption device (25). In the first state, the energy absorption device (25) is configured to absorb at least part of the impact energy transmitted between the seat body (2a) and the side wall (100).

7. The construction vehicle according to claim 6, wherein, The energy absorption device (25) is one of a hydraulic energy absorber, a spring damper energy absorber, a shear energy absorber, and a friction energy absorber.

8. The construction vehicle according to claim 6 or 7, characterized in that, The first limiting structure (21) includes a first limiting portion (211) and a second limiting portion (212) spaced apart in the second direction, and the first limiting portion (211) is located above the second limiting portion (212). In the first state, both the first limiting portion (211) and the second limiting portion (212) are configured to be connected to the side wall (100). The mounting structure (2b) further includes a guiding device (24). The guiding device (24) includes a guide rail (241) and a sliding portion (242) sleeved on the outer periphery of the guide rail (241). The guide rail (241) is connected between the first limiting portion (211) and the second limiting portion (212). The sliding portion (242) is connected to the seat body (2a) and can slide relative to the guide rail (241). One end of the energy absorption device (25) is connected to the first limiting portion (211), and the other end is connected to the sliding portion (242).

9. The construction vehicle according to claim 8, characterized in that, The guiding device (24) includes a connecting portion (243) and two sets of parallel guide rails (241) and sliding portions (242). The connecting portion (243) is connected between the ends of the two sliding portions (242) away from the first limiting portion (211). Both ends of the energy absorption device (25) are respectively connected to the first limiting portion (211) and the connecting portion (243).

10. The construction vehicle according to claim 1, characterized in that, The engineering vehicle is a multi-purpose engineering vehicle. The first seat (1) is the driver's seat and is rotatably mounted in the cab. The second seat (2) is the passenger seat.

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