Mountain transport vehicles

Abstract

This application relates to the field of transportation vehicle technology, and provides a mountain transport vehicle. The mountain transport vehicle includes a chassis, a cargo box, a support device, and a boom device; the boom device is disposed on the support device; both the support device and the cargo box are disposed on the chassis and arranged along the chassis's travel direction, with the support device located at one end of the chassis along the chassis's travel direction; the support device includes a turntable, a boom, and a first driving member. The turntable is rotatable about its center of rotation; the boom is hinged to the turntable; the first driving member drives the boom to rotate relative to the turntable with its rotation axis intersecting the vertical direction, so that the boom has a first supported state and a first retracted state, thereby adjusting a first height at the connection between the boom device and the boom; in the first retracted state, the first height is the minimum height at the connection between the boom device and the boom; when the mountain transport vehicle is in a stowed state, the boom is in the first retracted state. This improves the stability of the mountain transport vehicle during transportation.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and more particularly to a mountain transport vehicle. Background Technology

[0002] In related technologies, many construction sites in power transmission line projects are located in areas with inconvenient transportation, such as mountainous regions. Material transportation is one of the essential tasks for power transmission line construction. The boom device is usually located at the end of the mountain transport vehicle and is at a high height. In addition, the terrain at the construction site is complex, and the mountain transport vehicle is prone to imbalance during travel, which may lead to vehicle instability or even tipping over. Utility Model Content

[0003] In view of this, the present application aims to provide a mountain transport vehicle that can improve the stability of the mountain transport vehicle during transportation. The mountain transport vehicle has a stowed state and includes a chassis, a cargo box, a support device, and a boom device; the boom device is disposed on the support device; both the support device and the cargo box are disposed on the chassis and arranged along the chassis's traveling direction; the support device is disposed at one end of the chassis along the chassis's traveling direction; the support device includes:

[0004] A turntable is capable of rotating around its center of rotation;

[0005] The boom is hinged to the turntable;

[0006] The first driving member is used to drive the boom to rotate relative to the turntable and the axis of rotation intersects the vertical direction, so that the boom has a first supported state and a first retracted state, so as to adjust the first height of the connection between the boom device and the boom.

[0007] In the first supported state, the first height is greater than the minimum height at the connection between the boom device and the boom;

[0008] In the first retracted state, the first height is the minimum height at the connection point between the boom device and the boom;

[0009] When the mountain transport vehicle is in the stowed state, the boom is in the first retracted state.

[0010] In some embodiments, the connection point between the boom and the boom assembly is located at one end of the boom along its extension direction, and the first support state includes the highest state, in which the extension direction of the boom is vertical.

[0011] In some embodiments, when the boom is in a first retracted state, the extension direction of the boom intersects with the vertical direction, and the projection of the boom along the vertical direction is outside the projection range of the cargo box along the vertical direction.

[0012] In some embodiments, the turntable includes a fixed portion that extends perpendicular to the vertical direction, and the boom is hinged to the fixed portion;

[0013] The first end of the boom is hinged to the first end of the fixed part along its own extension direction; the first end of the first drive member is hinged to the second end of the fixed part along its own extension direction, and the second end of the first drive member is hinged to the second end of the boom.

[0014] In some embodiments, the chassis has a receiving cavity, the cargo box is located in the receiving cavity, and the top of the receiving cavity is open; the support device further includes a base frame disposed on the chassis, the turntable includes a first turntable and a second turntable capable of rotating relative to each other, and the fixing part is disposed on the first turntable; the base frame includes:

[0015] Support plate, the second turntable is disposed on the support plate;

[0016] The first leg and the second leg respectively support one end of the support plate along the traveling direction of the chassis;

[0017] The first leg is fixed to the bottom wall of the receiving cavity; one end of the receiving cavity along the direction of travel is the first side wall, and the second leg is fixed to the upper end of the first side wall.

[0018] In some embodiments, the end of the first leg connected to the bottom wall is farther away from the end of the first leg connected to the support plate than the second leg.

[0019] In some embodiments, the chassis further includes:

[0020] A first reinforcing part is disposed on the bottom wall of the receiving cavity, and the first support leg is fixed to the first reinforcing part; and / or,

[0021] The second reinforcing part is disposed at the opening edge of the receiving cavity, and the second leg is fixed to the second reinforcing part.

[0022] In some embodiments, the first reinforcing part includes:

[0023] A first crossbeam and a second crossbeam are arranged at intervals along the vertical direction on the side wall; the first crossbeam is located at the upper end of the side wall, and the first support leg is fixed to the first crossbeam;

[0024] The longitudinal beam connects the first crossbeam and the second crossbeam.

[0025] In some embodiments, the boom assembly includes:

[0026] The boom is hinged to the end of the jib that is away from the turntable along its extension direction, and the extension direction of the boom forms a first angle with the extension direction of the jib.

[0027] The mountain transport vehicle also includes a second drive unit for driving the boom to swing relative to the boom. In some embodiments, the second drive unit and the first drive unit are respectively placed on opposite sides of the boom.

[0028] In some embodiments, the boom includes:

[0029] The two upright plates are arranged at intervals relative to each other, and the second end of the upright plate is hinged to the first end of the boom;

[0030] A connecting rod is connected to the two upright plates, the first end of the second driving member is hinged to the connecting rod, and the second end of the second driving member is hinged to the second end of the boom.

[0031] In some embodiments, the upright plate includes:

[0032] A first hinge portion is used to hinge with the fixed portion;

[0033] The second hinge portion is used for hinged to the boom;

[0034] The third hinge portion is used to hinge with the second driving member;

[0035] The third hinge portion is located between the first hinge portion and the second hinge portion.

[0036] The mountain transport vehicle provided in this application embodiment is equipped with a boom hinged to a turntable, and the turntable can drive the boom and the crane device to rotate. The orientation of the crane device can be adjusted for lifting operations. When the structural layout requires it, the boom, the first drive component and the crane device can avoid the cargo box. It can also adjust the first height of the connection between the crane device and the boom, thereby reducing the center of gravity height of the crane device, thereby reducing the center of gravity height of the mountain transport vehicle, and reducing the possibility of the mountain transport vehicle becoming unbalanced or even overturning. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a mountain transport vehicle according to an embodiment of this application, wherein a portion is a cross-sectional view to show the receiving cavity and the base frame, and the mountain transport vehicle is in a stowed state;

[0038] Figure 2 for Figure 1The diagram shows a partial structure of a mountain transport vehicle, including the underframe, the first reinforcing section, and the second reinforcing section.

[0039] Figure 3 This is a schematic diagram of the support device, boom device and second drive component in one embodiment of this application, wherein the boom is in a first retracted state and the arm is in a second retracted state.

[0040] Figure 4 for Figure 3 Top view;

[0041] Figure 5 for Figure 3 Side view;

[0042] Figure 6 This is a partial structural schematic diagram of the support device in one embodiment of this application;

[0043] Figure 7 for Figure 6 Top view;

[0044] Figure 8 for Figure 3 Another structural schematic diagram of the support device, boom device and second drive component shown, wherein the boom is in the first support state and the arm is in the second support state;

[0045] Figure 9 for Figure 8 Top view;

[0046] Figure 10 for Figure 8 Side view.

[0047] Explanation of reference numerals in the attached figures

[0048] 100. Mountain transport vehicle; 10. Chassis; 10a. Reception cavity; 11. First reinforcing section; 111. First crossbeam; 112. Second crossbeam; 113. Longitudinal beam; 12. Second reinforcing section; 13. Bottom wall; 14. Chassis body; 15. Road wheel; 16. Track; 17. First side wall; 20. Cargo box; 30. Support device; 31. Turntable; 313. Fixing part; 311. First turntable; 312. Second turntable Turntable; 32, boom; 321, upright plate; 3211, first hinge; 3212, second hinge; 3213, third hinge; 3214, fourth hinge; 33, first drive unit; 34, base frame; 341, first outrigger; 342, second outrigger; 343, support plate; 40, boom assembly; 41, boom; 50, second drive unit; 60, cargo box fixing assembly; X, direction of travel; Z, vertical direction. Detailed Implementation

[0049] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0050] It should be noted that in the embodiments of this application, the orientations or positional relationships such as "up," "down," "direction of travel," and "vertical direction" are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0052] In the description of this specification, references to terms such as "some embodiments," "exemplary," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0053] In related technologies, many construction sites in power transmission line projects are located in areas with inconvenient transportation, such as mountainous regions. Material transportation is one of the essential tasks for power transmission line construction. The boom device is usually located at the end of the mountain transport vehicle and is at a high height. In addition, the terrain at the construction site is complex, and the mountain transport vehicle is prone to imbalance during travel, which may lead to vehicle instability or even tipping over.

[0054] In view of this, please refer to Figures 1-5 This application provides a mountain transport vehicle 100, which has a stowed state and can be adjusted to the stowed state during travel to reduce the height of the boom device 40 and improve the stability of the mountain transport vehicle 100.

[0055] The mountain transport vehicle 100 includes a chassis 10, a cargo box 20, a support device 30, and a boom device 40.

[0056] Cargo container 20 can carry goods used in power transmission line projects, such as sand and gravel, construction equipment, tower materials, power poles, etc.

[0057] The chassis 10 is capable of carrying the cargo box 20, the support device 30, and the boom device 40, as well as other devices such as control devices and power devices, and the chassis 10 is used to realize the walking function. For example, please refer to... Figure 2 The chassis 10 includes a chassis body 14 and road wheels 15. The road wheels 15 are used to form a force transmission path with the ground so that the road wheels 15 can support the chassis body 14. Exemplarily, the chassis 10 also includes tracks 16, through which the road wheels 15 contact the ground.

[0058] The boom assembly 40 is mounted on the support assembly 30; both the support assembly 30 and the cargo box 20 are mounted on the chassis 10 and arranged along the travel direction X of the chassis 10. The support assembly 30 is located at one end of the chassis 10 along the travel direction X. For example, the travel direction X of the chassis 10 is the same as the length direction of the chassis 10.

[0059] Since the boom device 40 is mounted on the support device 30, and the support device 30 is located at one end of the chassis 10, the height of the boom device 40 affects the stability of the vehicle during travel. When traveling on complex road conditions, this can easily cause the mountain transport vehicle 100 to become unbalanced or even overturn. Therefore, the applicant considers lowering the height of the support device 30, thereby lowering the height of the boom device 40 and reducing the center of gravity of the mountain transport vehicle 100.

[0060] To adjust the height of the boom assembly 40, the support device 30 is configured to adjust its own height, thereby adjusting the height of the connection between the boom assembly 40 and the boom 32. Specifically, the support device 30 includes a turntable 31, a boom 32, and a first drive member 33.

[0061] The turntable 31 is capable of rotating around its center of rotation; the boom 32 is hinged to the turntable 31. The axis of rotation of the turntable 31 is located at its center of rotation. The turntable 31 can rotate around its center of rotation, thereby driving the boom 32 and the lifting arm 40 to rotate together, so that the lifting arm 40 can rotate to face the cargo box 20 for lifting operations on the goods in the cargo box 20, such as... Figure 1 As shown.

[0062] The first driving member 33 drives the boom 32 to rotate relative to the turntable 31, with the rotation axis intersecting the vertical direction Z, so that the boom 32 has a first supported state and a first retracted state, thereby adjusting the first height H at the connection between the boom device 40 and the boom 32; in the first supported state, the first height H is greater than the minimum height at the connection between the boom device 40 and the boom 32; in the first retracted state, the first height H is the minimum height at the connection between the boom device 40 and the boom 32; wherein, when the mountain transport vehicle 100 is in the retracted state, the boom 32 is in the first retracted state. For example, please refer to... Figure 3 The boom 32 includes a second hinge portion 3212 for hinged to the boom assembly 40. Adjusting the first height H at the connection between the boom assembly 40 and the boom 32 is equivalent to adjusting the height of the second hinge portion 3212.

[0063] The stowage state of the mountain transport vehicle 100 refers to the state in which the mountain transport vehicle 100 does not require the use of the boom device 40 for lifting operations.

[0064] Understandably, in the first supported state, the first height H can take several different values, depending on the angle between the boom 32 and the turntable 31. During operation, the first height H can be adjusted to the required size according to the lifting needs, to coordinate with the boom assembly 40 for lifting operations. In the first retracted state, the first height H has only one value, which is the height at the minimum height of the connection between the boom assembly 40 and the boom 32.

[0065] The boom 32 rotates relative to the turntable 31 and the axis of rotation intersects the vertical direction Z. This means that the position where the boom 32 and the turntable 31 are hinged is the axis of rotation, and the boom 32 can swing relative to the turntable 31 to adjust the first height H at the connection between the boom device 40 and the boom 32.

[0066] The first drive member 33 is used to provide power for the rotation of the boom 32. The first drive member 33 can provide power in any way; for example, the first drive member 33 can be an electric cylinder, a hydraulic cylinder, or a motor, etc.

[0067] The mountain transport vehicle 100 provided in this application embodiment is configured with a boom 32 hinged to a turntable 31. The turntable 31 can drive the boom 32 and the boom device 40 to rotate, and can adjust the orientation of the boom device 40 for lifting operations. When the structural layout requires it, the boom 32, the first drive member 33 and the boom device 40 can avoid the cargo box 20. It can also adjust the first height H at the connection between the boom device 40 and the boom 32, thereby reducing the center of gravity height of the boom device 40, thereby reducing the center of gravity height of the mountain transport vehicle 100, so as to reduce the possibility of the mountain transport vehicle 100 becoming unbalanced or even overturning.

[0068] In some embodiments, the axis of rotation between the boom 32 and the turntable 31 extends in a horizontal direction.

[0069] In some embodiments, please refer to Figures 1-3 When the boom 32 is in the first retracted state, the extension direction of the boom 32 intersects the vertical direction Z, and the projection of the boom 32 along the vertical direction Z is outside the projection range of the cargo box 20 along the vertical direction.

[0070] Thus, when the mountain transport vehicle 100 needs to be adjusted to the retracted state, the boom device 40 is first rotated to the side of the cargo box 20, and then the boom 32 is driven to rotate by the first drive member 33 to adjust the boom 32 to the first retracted state, reducing the height of the connection between the boom device 40 and the boom 32, so as to avoid interference between the first drive member 33, the boom 32, and the boom device 40 and the cargo box 20 during movement. This design dimension can reduce the distance between the support device 30 and the cargo box 20, reduce the total length of the mountain transport vehicle 100 along the travel direction X, and make the structural layout of the mountain transport vehicle 100 more compact.

[0071] In some embodiments, please refer to Figure 3 The turntable 31 includes a fixed portion 313 extending perpendicularly to the vertical direction, and a movable arm 32 hinged to the fixed portion 313. A first end of the movable arm 32 is hinged to a first end of the fixed portion 313 along its own extending direction. A first end of a first driving member 33 is hinged to a second end of the fixed portion 313 along its own extending direction, and a second end of the first driving member 33 is hinged to a second end of the movable arm 32. By providing the fixed portion 313, the movable arm 32 and the first driving member 33 are respectively connected to the two ends of the fixed portion 313, providing space for the first driving member 33 to drive the movable arm 32 to rotate. Simultaneously, the movable arm 32, the first driving member 33, and the fixed portion 313 can form a near-triangular structure, improving the connection strength between the movable arm 32, the first driving member 33, and the fixed portion 313.

[0072] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 7 The chassis 10 has a receiving cavity 10a, the cargo box 20 is located in the receiving cavity 10a, and the top of the receiving cavity 10a is open.

[0073] The support device 30 also includes a base frame 34, which is mounted on the chassis 10. By mounting the base frame 34, it is easy to transmit the force of the boom 32, turntable 31, boom device 40, and the cargo lifted by the boom device 40 to the chassis 10.

[0074] For example, please refer to Figure 2 , Figure 6 and Figure 7The turntable 31 includes a first turntable 311 and a second turntable 312 that can rotate relative to each other, and a fixing part 313 is disposed on the first turntable 311. The first turntable 311 is located above the second turntable 312. The second turntable 312 rotates relative to the first turntable 311, thereby driving the boom 32 and the lifting arm device 40 to rotate.

[0075] The specific form of the base frame 34 is not limited, as long as it can provide support for the turntable 31. For example, to improve the stability of the base frame 34, please refer to [reference needed]. Figure 2 , Figure 6 and Figure 7 The base frame 34 includes a support plate 343, a first support leg 341, and a second support leg 342. The second turntable 312 is disposed on the support plate 343; the first support leg 341 and the second support leg 342 support one end of the support plate 343 respectively along the traveling direction X of the chassis 10.

[0076] The support plate 343 is used to provide a bearing surface for the turntable 31 and to transmit the force of the turntable 31, boom 32, boom device 40 and the cargo lifted by the boom device 40 to the first outrigger 341 and the second outrigger 342, and then to the chassis 10.

[0077] For example, the first leg 341 is fixed to the bottom wall 13 of the receiving cavity 10a; one end of the receiving cavity 10a along the traveling direction X is the first side wall 17, and the second leg 342 is fixed to the upper end of the first side wall 17. In this way, the first leg 341 can transmit force to the bottom wall 13, and the second leg 342 can transmit force to the first side wall 17, so that the chassis 10 can be evenly stressed, reducing the possibility of structural damage caused by excessive local stress on the chassis 10.

[0078] In other embodiments, the first leg 341 and the second leg 342 are both fixed to the bottom wall 13 of the receiving cavity 10a.

[0079] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 6 The end of the first leg 341 connected to the bottom wall 13 is farther away from the end of the first leg 341 connected to the support plate 343 than the end of the first leg 341 connected to the support plate 343. This makes it easier to install other structures between the first leg 341 and the first side wall 17.

[0080] In other words, the first leg 341 is arranged at an angle to the vertical direction Z. This makes it easier for the support plate 343 to be arranged towards the edge of the chassis 10 in the traveling direction X of the chassis 10.

[0081] For example, the first leg 341 includes two inclined beams and a third crossbeam, the third crossbeam connecting the two inclined beams to improve the structural strength of the first leg 341.

[0082] For example, the second support leg 342 includes four short columns spaced apart, which connect the support plate 343 and the first crossbeam 111 to improve the structural strength of the second support leg 342.

[0083] In some embodiments, please refer to Figure 2 The chassis 10 also includes a first reinforcing part 11, which is disposed on the bottom wall 13 of the receiving cavity 10a, and the first support leg 341 is fixed to the first reinforcing part 11. This improves the connection strength between the first support leg 341 and the first reinforcing part 11, enabling the chassis 10 to stably support the base frame 34, which in turn stably supports the turntable 31, the boom 32, and the crane arm 40. Exemplarily, the first support leg 341 and the first reinforcing part 11 are connected by bolts.

[0084] In some embodiments, please refer to Figure 2 The chassis 10 also includes a second reinforcing part 12, which is disposed at the opening edge of the receiving cavity 10a, and the second support leg 342 is fixed to the second reinforcing part 12. This improves the connection strength between the second support leg 342 and the second reinforcing part 12, enabling the chassis 10 to stably support the base frame 34, which in turn stably supports the turntable 31, the boom 32, and the crane arm 40. Exemplarily, the second support leg 342 and the second reinforcing part 12 are connected by bolts.

[0085] Exemplarily, the chassis 10 further includes a first reinforcing part 11 and a second reinforcing part 12. The first reinforcing part 11 is disposed on the bottom wall 13 of the receiving cavity 10a, and the first support leg 341 is fixed to the first reinforcing part 11. The second reinforcing part 12 is disposed on the opening edge of the receiving cavity 10a, and the second support leg 342 is fixed to the second reinforcing part 12.

[0086] In some embodiments, the first reinforcing part 11 includes a longitudinal beam 113, a first crossbeam 111, and a second crossbeam 112. The first crossbeam 111 and the second crossbeam 112 are arranged vertically at intervals on the side wall; the first crossbeam 111 is located at the upper end of the side wall, and the first support leg 341 is fixed to the first crossbeam 111; the longitudinal beam 113 connects the first crossbeam 111 and the second crossbeam 112.

[0087] Thus, by providing the first crossbeam 111, the second crossbeam 112, and the longitudinal beam 113, the load-bearing capacity of the first reinforcing part 11 can be improved, and the possibility of structural damage due to stress on the first reinforcing part 11 can be reduced. The longitudinal beam 113 can transmit forces between the first crossbeam 111 and the second crossbeam 112. For example, at least two longitudinal beams 113 are provided, respectively connecting the first crossbeam 111 and the second crossbeam 112, and the at least two longitudinal beams 113 are spaced apart in the horizontal direction to improve the load-bearing capacity of the first reinforcing part 11.

[0088] In some embodiments, please refer to Figure 3 The boom assembly 40 includes a boom 41, which is hinged to the end of the boom 32 that is away from the turntable 31 along its extension direction. The extension direction of the boom 41 forms a first angle with the extension direction of the boom 32. That is, both ends of the boom 32 are hinged to the fixed part 313 and the boom 41, respectively.

[0089] The mountain transport vehicle 100 also includes a second drive unit 50, which drives the boom 41 to swing relative to the boom 32, so that the boom 41 has a second supported state and a second retracted state. When the mountain transport vehicle 100 is in the retracted state, the boom 41 is in the second retracted state.

[0090] In the second support state, the first included angle is greater than the minimum included angle formed by the extension direction of the boom 41 and the extension direction of the jib 32.

[0091] In the second retracted state, the first included angle is the minimum included angle formed by the extension direction of the boom 41 and the extension direction of the boom 32.

[0092] Understandably, in the second supported state, the first included angle can take multiple different values. During operation, the first included angle can be adjusted to the required angle value according to the lifting needs, so that the boom 41 can perform the lifting operation. In the second retracted state, the first included angle has only one value, which is the minimum included angle.

[0093] In some embodiments, please refer to Figures 8-10 The second support state includes the maximum angle state. When the boom 41 is in the maximum angle state, the first angle formed by the extension direction of the boom 41 and the extension direction of the boom 32 is greater than 90°.

[0094] The second drive member 50 is used to provide power for the rotation of the boom 41, thereby adjusting the first angle so that the boom 41 has a second supported state and a second retracted state.

[0095] The second drive unit 50 can be powered in any way; for example, the second drive unit 50 can be an electric cylinder, a hydraulic cylinder, or a motor, etc.

[0096] For example, the mountain transport vehicle 100 also includes a third drive unit for driving the first turntable 311 to rotate relative to the second turntable 312. Similarly, the third drive unit is not limited in the way it is powered; for example, the third drive unit can be an electric cylinder, a hydraulic cylinder, or an electric motor, etc.

[0097] For example, the third drive element is disposed on the support plate 343.

[0098] Exemplarily, the boom 41 is retractable and / or foldable relative to the boom 32 to adjust the extended length of the boom 41 for lifting operations. Exemplarily, the boom assembly 40 also includes a fourth drive for driving the boom 41 to retract relative to the boom 32, or for driving the boom 41 to fold relative to the boom 32.

[0099] It is understandable that the first drive component 33, the second drive component 50, the third drive component, and the fourth drive component can work together to adjust the position of the boom 41, that is, adjust the first height H at the connection between the boom device 40 and the boom 32, the first angle formed by the extension direction of the boom 41 and the extension direction of the boom 32, the direction of the boom 41, and the extension length of the boom 41, so that the boom device 40 can flexibly adjust its posture to carry out lifting operations.

[0100] In some embodiments, please refer to Figure 8 The second drive component 50 and the first drive component 33 are positioned on opposite sides of the boom 32. This reduces the possibility of interference between the second drive component 50 and the first drive component 33 during operation and also helps to increase the stroke of each component, thereby improving the overall stability of the support device 30 and the boom device 40 during the movement of the boom 32 and the lifting arm device 40. Furthermore, when the mountain transport vehicle 100 is in the stowed state, combined with... Figure 3 The boom 41, the movable boom 32 and the fixed part 313 can form a Z-shape so that the movable boom 32 can stably support the boom 41, the fixed part 313 can stably support the boom 41, and can reduce the height of the boom 41 when the mountain transport vehicle 100 is in the storage state, thereby improving the stability of the mountain transport vehicle 100.

[0101] In some embodiments, please refer to Figure 2 The boom 32 includes a vertical plate 321 and a connecting rod. The two vertical plates 321 are arranged at intervals relative to each other, and the second end of the vertical plate 321 is hinged to the first end of the boom 41; the connecting rod is connected to the two vertical plates 321, the first end of the second drive member 50 is hinged to the connecting rod, and the second end of the second drive member 50 is hinged to the second end of the boom 41.

[0102] A connecting rod is positioned between the two upright plates 321, providing the point of action for the second driving member 50. For example, the first end of the second driving member 50 is hinged to the middle position of the connecting rod to improve motion smoothness.

[0103] In some embodiments, please refer to Figure 8The upright plate 321 includes a first hinge portion 3211, a second hinge portion 3212, and a third hinge portion 3213. The first hinge portion 3211 is used to hinge with the fixed portion 313; the second hinge portion 3212 is used to hinge with the boom 41; and the third hinge portion 3213 is used to hinge with the second drive member 50; wherein, the third hinge portion 3213 is located between the first hinge portion 3211 and the second hinge portion 3212.

[0104] In this way, the second drive component 50, part of the boom 41 and part of the boom 32 can form a near-triangular structure, improving the overall structural stability of the boom device 40 and boom 32 when the boom device 40 is in operation.

[0105] For example, the upright plate 321 also includes a fourth hinge portion 3214 for hinged with the first drive member 33.

[0106] For example, the fixing part 313 includes a fixing plate, a first connecting shaft and a second connecting shaft. The two fixing plates are arranged at intervals relative to each other, and the first end of the upright plate 321 is hinged to the first end of the fixing plate.

[0107] The first connecting shaft is connected to the first end of the fixed plate, the second connecting shaft is connected to the second end of the fixed plate, the first end of the upright plate 321 is hinged to the first connecting shaft, and the first end of the first driving member 33 is hinged to the second connecting shaft.

[0108] In some embodiments, please refer to Figures 8-10 The connection point between the boom 32 and the boom assembly 40 is located at one end of the boom 32 along its extension direction. The first support state includes the highest state, such as... Figure 4 As shown, when the boom 32 is in its highest position, the extension direction of the boom 32 is the vertical direction Z.

[0109] In this way, when the boom 32 is at its highest position, the stability of the boom 32 in supporting the boom device 40 can be improved.

[0110] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A mountain transport vehicle, characterized in that, The mountain transport vehicle has a stowed-in state and includes a chassis, cargo box, support device, and boom device; the boom device is mounted on the support device. Both the support device and the cargo box are mounted on the chassis and arranged along the chassis's direction of travel. The support device is located at one end of the chassis along the chassis's direction of travel. The support device includes: A turntable is capable of rotating around its center of rotation; The boom is hinged to the turntable; The first driving member is used to drive the boom to rotate relative to the turntable and the axis of rotation intersects the vertical direction, so that the boom has a first supported state and a first retracted state, so as to adjust the first height of the connection between the boom device and the boom. In the first supported state, the first height is greater than the minimum height at the connection between the boom device and the boom; In the first retracted state, the first height is the minimum height at the connection point between the boom device and the boom; When the mountain transport vehicle is in the stowed state, the boom is in the first retracted state.

2. The mountain transport vehicle according to claim 1, characterized in that, The connection point between the boom and the boom device is located at one end of the boom along its extension direction. The first support state includes the highest state, in which the boom extends vertically.

3. The mountain transport vehicle according to claim 1, characterized in that, When the boom is in the first retracted state, the extension direction of the boom intersects the vertical direction, and the projection of the boom along the vertical direction is outside the projection range of the cargo box along the vertical direction.

4. The mountain transport vehicle according to claim 1, characterized in that, The turntable includes a fixed part that extends perpendicular to the vertical direction, and the boom is hinged to the fixed part; The first end of the boom is hinged to the first end of the fixed part along its own extension direction; the first end of the first drive member is hinged to the second end of the fixed part along its own extension direction, and the second end of the first drive member is hinged to the second end of the boom.

5. The mountain transport vehicle according to claim 4, characterized in that, The chassis has a receiving cavity, the cargo box is located in the receiving cavity, and the top of the receiving cavity is open; the support device further includes a base frame, the base frame is disposed on the chassis, the turntable includes a first turntable and a second turntable that can rotate relative to each other, and the fixing part is disposed on the first turntable; the base frame includes: Support plate, the second turntable is disposed on the support plate; The first leg and the second leg respectively support one end of the support plate along the traveling direction of the chassis; The first leg is fixed to the bottom wall of the receiving cavity; one end of the receiving cavity along the direction of travel is the first side wall, and the second leg is fixed to the upper end of the first side wall.

6. The mountain transport vehicle according to claim 5, characterized in that, The end of the first leg that is connected to the bottom wall is farther away from the end of the first leg that is connected to the support plate than the second leg.

7. The mountain transport vehicle according to claim 5, characterized in that, The chassis also includes: A first reinforcing part is disposed on the bottom wall of the receiving cavity, and the first support leg is fixed to the first reinforcing part; and / or, The second reinforcing part is disposed at the opening edge of the receiving cavity, and the second leg is fixed to the second reinforcing part.

8. The mountain transport vehicle according to claim 7, characterized in that, The first reinforcing part includes: A first crossbeam and a second crossbeam are arranged at intervals along the vertical direction on the side wall; the first crossbeam is located at the upper end of the side wall, and the first support leg is fixed to the first crossbeam; The longitudinal beam connects the first crossbeam and the second crossbeam.

9. The mountain transport vehicle according to claim 6, characterized in that, The boom assembly includes: The boom is hinged to the end of the jib that is away from the turntable along its extension direction, and the extension direction of the boom forms a first angle with the extension direction of the jib. The mountain transport vehicle also includes a second drive unit for driving the boom to swing relative to the boom.

10. The mountain transport vehicle according to claim 9, characterized in that, The second drive member and the first drive member are respectively located on opposite sides of the boom.

11. The mountain transport vehicle according to claim 9, characterized in that, The boom includes: The two upright plates are arranged at intervals relative to each other, and the second end of the upright plate is hinged to the first end of the boom; A connecting rod is connected to the two upright plates, the first end of the second driving member is hinged to the connecting rod, and the second end of the second driving member is hinged to the second end of the boom.

12. The mountain transport vehicle according to claim 11, characterized in that, The upright plate includes: A first hinge portion is used to hinge with the fixed portion; The second hinge portion is used for hinged to the boom; The third hinge portion is used to hinge with the second driving member; The third hinge portion is located between the first hinge portion and the second hinge portion.

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