Working vehicle boom system and working vehicle

Abstract

The present invention provides a work vehicle boom system and a work vehicle. The work vehicle boom system includes: a first boom; a demolition arm, one end of which is rotatably connected to the first boom; a second boom, one end of which is rotatably connected to an end of the first boom away from the demolition arm; a first driving link mechanism, which is rotatably connected to the first boom and the second boom, respectively, and is used to drive the first boom to unfold or fold the first boom, and in the folded state, at least a portion of the first boom and the demolition arm are located below the second boom, and the demolition arm and the first boom can be arranged horizontally respectively. The present invention realizes that the demolition arm can perform facade demolition and top demolition on a building through the first driving link mechanism, thereby improving the operating efficiency of the work vehicle boom system.

Description

Technical Field

[0001] The present application belongs to the technical field of fire trucks, and specifically, relates to an operating vehicle boom system and an operating vehicle. Background Art

[0002] In the relevant technology, the boom of the demolition fire truck mostly adopts the telescopic + folding or curved arm mode, and the unfolded working range and working scope are limited. Due to the insufficient working range, it is generally only used for the demolition of brick, wood and low buildings, and can only be demolished on the facade, and the smoke exhaust effect is often not good when opening the passage. When encountering large-span warehouses and factories, its shortcomings are more prominent, and it may not be possible to complete the demolition and rescue mission, let alone carry out top demolition and rescue. In the context of modernization and urbanization, logistics, warehouses, and factories are highly concentrated, and often encounter complex rescue situations. In fire rescue, it is necessary not only to be able to carry out various demolition operations, but also to have complex demolition capabilities, such as top demolition, cross-obstacle demolition, etc. Summary of the invention

[0003] The embodiments according to the present invention are intended to solve or improve at least one of the above technical problems.

[0004] A first object of an embodiment of the present invention is to provide a work vehicle boom system.

[0005] A second object of an embodiment of the present invention is to provide a work vehicle.

[0006] To achieve the first purpose of an embodiment of the present invention, a work vehicle boom system is provided, including: a first boom; a breaking arm, one end of which is rotatably connected to the first boom; a second boom, one end of which is rotatably connected to an end of the first boom away from the breaking arm; a first driving link mechanism, rotatably connected to the first boom and the second boom respectively, for driving the first boom to unfold or fold relative to the second boom, and in the folded state, at least a portion of the first boom and the breaking arm are located below the second boom, and the breaking arm and the first boom can be arranged horizontally respectively.

[0007] In this technical solution, the whole boom system of the working vehicle adopts a folding boom structure. The boom system of the working vehicle is composed of a plurality of arms of more than three sections. The plurality of arms are rotated and connected to each other in sequence to form a strip structure. Two adjacent arms can be rotated and connected by hinges. Then, the arms that are rotated and connected to each other can be rotated by a certain angle through the drive of the driving mechanism, so that the boom system of the working vehicle has a large amplitude and height after being unfolded, and can meet the legal size requirements when folded, which is convenient for operation and transportation. Specifically, a first driving link mechanism is set between the first arm and the second arm, which can be used to drive the first arm to unfold upward relative to the second arm, or to fold the first arm downward relative to the second arm. That is, after the boom system of the working vehicle is folded, the first arm can be folded below the second arm. In addition, the first arm can be unfolded at an angle of more than 220°. When the demolition arm is connected to the end of the boom system of the working vehicle, it can not only perform vertical demolition, but also perform top demolition and cross-obstacle demolition, which greatly improves the demolition capability of the boom system of the working vehicle.

[0008] In addition, the technical solution provided according to the embodiment of the present invention may also have the following additional technical features:

[0009] In the above technical solution, the first driving link mechanism includes: a first link mechanism, which is arranged between the first section arm and the second section arm, and the first link mechanism is rotationally connected to the first section arm and the second section arm respectively; a first driving mechanism, one end of which is rotationally connected to the second section arm, and the other end of which is rotationally connected to the first link mechanism.

[0010] In this technical solution, the first connecting rod mechanism is rotatably connected between the first section arm and the second section arm, and the first driving mechanism can be driven by a cylinder or a combination of gears and a motor. In this embodiment, the cylinder is taken as an example. One end of the first driving mechanism is rotatably connected to the second section arm by a hinge, and the other end of the first driving mechanism is rotatably connected to the first connecting rod mechanism by a hinge. The extension of the first driving mechanism can drive the first connecting rod mechanism to enable the first section arm to be greatly expanded. The expandable angle of the first section arm can reach more than 220°, thereby ensuring that the demolition arm can demolish the top of the building, thereby further ensuring the demolition capability of the boom system of the operating vehicle.

[0011] In any of the above technical solutions, the first connecting rod mechanism includes: two first connecting rods, each of which is rotatably connected to the opposite sides of the second section arm through one end thereof; two second connecting rods, each of which is rotatably connected to the opposite sides of the first section arm through one end thereof, and is rotatably connected to the first driving mechanism through the other end thereof; wherein the two first connecting rods are rotatably connected to the second connecting rods through the other end thereof.

[0012] In this technical solution, the first connecting rod is provided with two, which are respectively rotatably connected to the opposite sides of the second joint arm; the second connecting rod is provided with two, which are respectively rotatably connected to the opposite sides of the first joint arm. Among them, the two second connecting rods are respectively rotatably connected to the first driving mechanism, and the two first connecting rods are respectively rotatably connected to the second connecting rods. It can be seen that the two first connecting rods and the two second connecting rods constitute a four-bar linkage mechanism, one end of a first connecting rod is rotatably connected to one side of the second joint arm, one end of another first connecting rod is rotatably connected to the other side of the second joint arm, and the two first connecting rods are arranged oppositely. One end of a second connecting rod is rotatably connected to one side of the first joint arm, one end of another second connecting rod is rotatably connected to the other side of the first joint arm, and the two second connecting rods are arranged oppositely. Among them, the first connecting rod located on the same side is rotatably connected to the second connecting rod, and the two second connecting rods are respectively connected to the first driving mechanism. That is, three intersection points are provided on the second connecting rod, which respectively realize the connection with the first driving mechanism, the connection with the first connecting rod and the connection with the first joint arm, and the structure is more stable.

[0013] In any of the above technical solutions, the breaking arm includes: the breaking arm includes: a third arm section, one end of which is rotatably connected to an end of the first arm section away from the second arm section; a quick-change device, which is rotatably connected to an end of the third arm section away from the first arm section; an accessory, which is connected to the quick-change device; a second driving connecting rod mechanism, which is rotatably connected to the third arm section and the quick-change device respectively, and is used to drive the quick-change device to rotate.

[0014] In this technical solution, the quick-change device is used to install different accessories. The accessory is rotatably connected to the third arm through the quick-change device, wherein the quick-change device is rotatably connected to the third arm, and the accessory and the quick-change device are detachably connected. By connecting the quick-change device, it is possible to replace a variety of accessories, so that the demolition arm can demolish buildings according to specific needs, thereby improving efficiency. A second drive link mechanism is provided between the accessory and the third arm, so that the second drive link mechanism drives the quick-change device to rotate, so that the quick-change device can drive the accessory to achieve a larger pitch angle, which can improve the demolition efficiency of the demolition arm. Specifically, at least a portion of the second drive link mechanism is rotatably connected to the accessory through an articulation, and at least a portion of the second drive link mechanism is rotatably connected to the third arm through an articulation, so as to drive the accessory to produce a larger pitch angle, thereby significantly improving the working efficiency and economic benefits of the accessory.

[0015] In any of the above technical solutions, the second driving link mechanism includes: two third links, each of which is rotationally connected to the opposite sides of the third arm through one end thereof; two fourth links, each of which is rotationally connected to the quick-change device through one end thereof, and is rotationally connected to the corresponding third links through the other end thereof; a second driving mechanism, one end of which is rotationally connected to the third arm, and the other end of which is rotationally connected to the two third links.

[0016] In this technical solution, two third connecting rods are provided, which are rotatably connected to the opposite sides of the third section arm respectively; two fourth connecting rods are provided, which are spaced apart from each other, and one end of the fourth connecting rod is rotatably connected to the attachment, and the other end of the fourth connecting rod is rotatably connected to the corresponding third connecting rod. It can be seen that the two third connecting rods and the two fourth connecting rods constitute a four-bar linkage, one end of a third connecting rod is rotatably connected to one side of the third section arm, one end of the other third connecting rod is rotatably connected to the other side of the third section arm, and the two third connecting rods are arranged oppositely. One end of a fourth connecting rod is rotatably connected to the attachment, one end of the other fourth connecting rod is rotatably connected to the attachment, and the two fourth connecting rods are arranged oppositely. Among them, the third connecting rod located on the same side is rotatably connected to the fourth connecting rod, and the two fourth connecting rods are respectively connected to the second driving mechanism. Two intersection points are respectively arranged on the third connecting rod and the fourth connecting rod, so that the structure of the second driving connecting rod mechanism is more stable.

[0017] In any of the above technical solutions, the work vehicle boom system also includes: a first driving device, one end of which is rotatably connected to the third boom, and the other end of which is rotatably connected to the first boom, for driving the third boom to unfold or fold relative to the first boom.

[0018] In this technical solution, the first driving device may be a cylinder, which drives the third boom to unfold downward relative to the first boom, so that the third boom drives the attachment to complete the corresponding action. Alternatively, the first driving device drives the third boom to fold upward relative to the first boom, so that after the boom system of the working vehicle is folded, the third boom and the first boom can be located on the same plane, saving space.

[0019] In any of the above technical solutions, the first boom, the second boom and the third boom respectively have a box structure.

[0020] In this technical solution, the first boom, the second boom and the third boom are respectively made into box structures, which can improve the structural strength and rigidity of the first boom, the second boom and the third boom, and improve the application scope and efficiency of the working vehicle boom system.

[0021] In any of the above technical solutions, the work vehicle boom system also includes: a fourth boom, one end of which is rotatably connected to an end of the second boom away from the first boom; a second drive device, one end of which is rotatably connected to the second boom and the other end of which is rotatably connected to the fourth boom, and is used to drive the second boom to unfold or fold, and in the folded state, the fourth boom is at least partially located above the second boom; wherein the fourth boom has a box structure.

[0022] In this technical solution, one end of the fourth arm is rotatably connected to the second arm, and the second drive device is arranged between the fourth arm and the second arm, and is used to drive the second arm to unfold or fold. Specifically, one end of the fourth arm is rotatably connected to the second arm by a hinge, so that the second arm can be folded or unfolded relative to the fourth arm. The second drive device, such as a combination of a cylinder or a gear and a drive motor, can be used as a power source for the second arm to fold or unfold. The second drive device drives the second arm so that the second arm is folded under the fourth arm, saving space. The fourth arm also has a box structure, which improves the structural strength and rigidity of the fourth arm. The first arm, the second arm, the third arm and the fourth arm are respectively made into box structures, and the box structure includes a frame structure surrounded by a top plate, two side plates and a bottom plate.

[0023] In any of the above technical solutions, the work vehicle boom system also includes: a rotating device, which is rotationally connected to the other end of the fourth arm away from the second arm; a third driving device, one end of which is rotationally connected to the rotating device and the other end of which is rotationally connected to the fourth arm, and is used to drive the fourth arm to unfold or fold relative to the rotating device.

[0024] In this technical solution, the third driving device is arranged between the slewing device and the fourth boom, and the slewing device is rotatably connected with the fourth boom. The slewing device can realize the circumferential rotation of the boom system of the working vehicle, and the operating range of the boom system of the working vehicle can be improved. The third driving device can be a combination of a cylinder or a gear and a driving motor, so that the fourth boom can be folded or unfolded relative to the slewing device.

[0025] To achieve the second purpose of an embodiment of the present invention, a work vehicle is provided, including: a chassis; a vehicle body, arranged on the chassis; a support system, arranged in the vehicle body, for supporting the vehicle body; the work vehicle arm system in any embodiment is connected to the vehicle body.

[0026] In this technical solution, the working vehicle provided according to an embodiment of the present invention includes the working vehicle boom system according to any embodiment of the present invention, and therefore it has all the beneficial effects of the working vehicle boom system according to any embodiment of the present invention.

[0027] Additional aspects and advantages of embodiments according to the present invention will become apparent in the following description or may be learned through practice of embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the embodiments of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1It is a schematic diagram of the main structure of a demolition-type multifunctional fire truck in the related art;

[0030] Figure 2 This is one of the structural schematic diagrams of the unfolded state of the boom system of the working vehicle according to some embodiments of the present invention;

[0031] Figure 3 The second structural schematic diagram of the unfolded state of the boom system of the working vehicle according to some embodiments of the present invention;

[0032] Figure 4 for Figure 3 A is an enlarged structural diagram;

[0033] Figure 5 for Figure 3 The enlarged structural diagram at B in FIG.

[0034] Figure 6 It is a schematic cross-sectional structural diagram of a first boom section of a boom system of a work vehicle according to some embodiments of the present invention;

[0035] Figure 7 The third structural schematic diagram of the unfolded state of the boom system of the working vehicle according to some embodiments of the present invention;

[0036] Figure 8 The fourth structural schematic diagram of the unfolded state of the boom system of the working vehicle according to some embodiments of the present invention;

[0037] Fig. 9 Schematic diagram of the structure of a work vehicle in a folded state according to some embodiments of the present invention.

[0038] in, Figure 1 The corresponding relationship between the reference numerals and component names in the figure is:

[0039] 100': Demolition-type multi-purpose fire truck.

[0040] in, Figures 2 to 9 The corresponding relationship between the reference numerals and component names in the figure is:

[0041] 10: working vehicle; 100: working vehicle arm system; 110: first arm section; 120: second arm section; 130: first driving link mechanism; 132: first link mechanism; 1322: first link; 1324: second link; 134: first driving mechanism; 140: demolition arm; 142: third arm section; 144: attachment; 146: second driving link mechanism; 1462: third link; 1464: fourth link; 1466: second driving mechanism; 148: quick change device; 150: first driving device; 160: fourth arm section; 170: second driving device; 180: slewing device; 190: third driving device; 200: chassis, 300: vehicle body; 400: support system; 20: building; 30: obstacle. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments according to the present invention. However, the embodiments according to the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the embodiments according to the present invention is not limited to the specific embodiments disclosed below.

[0044] In related technologies, such as Figure 1 As shown, a multifunctional fire truck 100' of demolition type is disclosed. The multifunctional fire truck 100' of demolition type includes a hydraulic system for controlling the movement of the whole machine, a chassis, a body, a crank arm, a turntable, and a sub-beam that bears the weight of the whole vehicle and all external loads. The crank arm is installed above the body, and a lifting winch device is arranged on the basic arm of the crank arm. A retractable electronic remote-controlled water cannon, a hydraulic clamp, a hydraulic grab, a hydraulic breaker, a cooling water system, a lighting system, a detection device and a monitoring system are installed at the upper arm end. The fire hose is fixed on the inner side of the boom, and operations such as amplitude change and rotation are performed on the turntable. The amplitude change and rotation functions of the boom are realized by driving the actuator through a power take-off device connected to the engine. The multifunctional fire truck 100' of demolition type has the principles of convenient access, reasonable placement, beautiful and practical; the principle of using logical relationships according to system configuration; and the concise and practical principle of being able to access any equipment in the box without any climbing tools. However, the arm of the demolition type multifunctional fire truck 100' in the prior art generally adopts a telescopic + folding or curved arm mode, which has the following disadvantages:

[0045] 1) Since the arm of the demolition fire truck generally adopts the telescopic + folding or curved arm method, its demolition capacity is small;

[0046] 2) The working range of the boom when unfolded is small and inflexible, that is, it cannot be used for demolition at a higher position or across obstacles;

[0047] 3) The strength and rigidity of the boom are poor. Due to the lack of rigidity, it is generally only used for demolition of brick and wood and low buildings, and can only be used for facade demolition. When opening the passage, the smoke exhaust effect is often poor;

[0048] 4) The expansion angle between the booms is not enough to carry out top or underground building demolition.

[0049] Refer to the following Figures 2 to 9 A work vehicle boom system 100 and a work vehicle 10 are described according to some embodiments of the present invention.

[0050] Example 1

[0051] like Figure 2 As shown, the present embodiment provides a work vehicle boom system 100, comprising: a first boom 110, a second boom 120, a first driving link mechanism 130 and a breaking arm 140, wherein one end of the breaking arm 140 is rotatably connected to the first boom 110; one end of the second boom 120 is rotatably connected to an end of the first boom 110 away from the breaking arm 140; the first driving link mechanism 130 is rotatably connected to the first boom 110 and the second boom 120 respectively, and is used to drive the first boom 110 to unfold or fold relative to the second boom 120, and in the folded state, at least a portion of the first boom 110 and the breaking arm 140 are located below the second boom 120, and the breaking arm 140 and the first boom 110 can be arranged horizontally respectively.

[0052] In this embodiment, the work vehicle boom system 100 adopts a folding boom structure as a whole. The work vehicle boom system 100 is composed of a plurality of arms with more than three sections. The plurality of arms are rotated and connected to each other in sequence to form a strip structure. Two adjacent arms can be rotated and connected by hinges. Then, the arms that are rotated and connected to each other can be rotated by a certain angle through the drive of the driving mechanism, so that the work vehicle boom system 100 has a larger amplitude and height after being unfolded, and can meet the regulatory size requirements when folded, which is convenient for operation and transportation. Specifically, a first driving link mechanism 130 is set between the first arm 110 and the second arm 120, which can be used to drive the first arm 110 to unfold upward relative to the second arm 120, or to fold the first arm 110 downward relative to the second arm 120. That is, after the work vehicle boom system 100 is folded, the first boom 110 can be folded below the second boom 120, and the first boom 110 and the demolition arm 140 are distributed in a line after being folded, and are generally distributed in the horizontal direction, and the projections of the first boom 110 and the demolition arm 140 on the horizontal plane do not overlap. In addition, the first boom 110 can be deployed at an angle of more than 220°. When the demolition arm 140 is connected to the end of the work vehicle boom system 100, not only can the vertical demolition be performed, but also the top demolition and the demolition across the obstacle 30 can be performed, which greatly improves the demolition capability of the work vehicle boom system 100.

[0053] Example 2

[0054] like Figure 3 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0055] The first driving link mechanism 130 includes: a first link mechanism 132 and a first driving mechanism 134, the first link mechanism 132 is arranged between the first section arm 110 and the second section arm 120, and the first link mechanism 132 is rotationally connected to the first section arm 110 and the second section arm 120 respectively; one end of the first driving mechanism 134 is rotationally connected to the second section arm 120, and the other end of the first driving mechanism 134 is rotationally connected to the first link mechanism 132.

[0056] In this embodiment, the first connecting rod mechanism 132 is rotatably connected between the first section arm 110 and the second section arm 120. The first driving mechanism 134 can be driven by a cylinder or a combination of gears and a motor. In this embodiment, the cylinder is used as an example. One end of the first driving mechanism 134 is rotatably connected to the second section arm 120 by a hinge, and the other end of the first driving mechanism 134 is rotatably connected to the first connecting rod mechanism 132 by a hinge. The extension of the first driving mechanism 134 can drive the first connecting rod mechanism 132 to enable the first section arm 110 to be greatly expanded. The expandable angle of the first section arm 110 can reach more than 220°, thereby ensuring that the demolition arm 140 can perform top demolition on the building 20, thereby further ensuring the demolition capability of the working vehicle boom system 100.

[0057] Example 3

[0058] like Figure 4 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0059] The first link mechanism 132 includes: two first links 1322 and two second links 1324. The two first links 1322 are rotatably connected to the opposite sides of the second section arm 120 through one end thereof; the two second links 1324 are rotatably connected to the opposite sides of the first section arm 110 through one end thereof, and the two second links 1324 are rotatably connected to the first driving mechanism 134 through the other end thereof. The two first links 1322 are rotatably connected to the second links 1324 through the other end thereof.

[0060] In this embodiment, two first connecting rods 1322 are provided, which are respectively rotatably connected to the opposite sides of the second section arm 120; and two second connecting rods 1324 are provided, which are respectively rotatably connected to the opposite sides of the first section arm 110. Among them, the two second connecting rods 1324 are respectively rotatably connected to the first driving mechanism 134, and the two first connecting rods 1322 are respectively rotatably connected to the second connecting rod 1324. It can be seen that the two first connecting rods 1322 and the two second connecting rods 1324 constitute a four-bar linkage mechanism, one end of one first connecting rod 1322 is rotatably connected to one side of the second section arm 120, one end of the other first connecting rod 1322 is rotatably connected to the other side of the second section arm 120, and the two first connecting rods 1322 are arranged oppositely. One end of one second connecting rod 1324 is rotatably connected to one side of the first section arm 110, one end of the other second connecting rod 1324 is rotatably connected to the other side of the first section arm 110, and the two second connecting rods 1324 are arranged oppositely. The first connecting rod 1322 and the second connecting rod 1324 on the same side are rotatably connected, and the two second connecting rods 1324 are respectively connected to the first driving mechanism 134. That is, three intersection points are provided on the second connecting rod 1324, which respectively realize the connection with the first driving mechanism 134, the connection with the first connecting rod 1322 and the connection with the first joint arm 110, and the structure is more stable.

[0061] Example 4

[0062] like Figure 3 and Figure 5 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0063] The breaking arm 140 includes: a third arm section 142, an attachment 144, a quick-change device 148 and a second driving link mechanism 146, one end of the third arm section 142 is rotatably connected to an end of the first arm section 110 away from the second arm section 120; the quick-change device 148 is rotatably connected to an end of the third arm section 142 away from the first arm section 110; the attachment 144 is connected to the quick-change device 148; the second driving link mechanism 146 is rotatably connected to the third arm section 142 and the quick-change device 148, respectively, for driving the quick-change device 148 to rotate.

[0064] In this embodiment, the quick-change device 148 is used to install different attachments 144. The attachment 144 is rotatably connected to the third arm 142 through the quick-change device 148, wherein the quick-change device 148 is rotatably connected to the third arm 142, and the attachment 144 and the quick-change device 148 are detachably connected. By connecting the quick-change device 148, it is possible to replace a variety of attachments 144, so that the demolition arm 140 can demolish the building 20 according to the specific need to be demolished, thereby improving efficiency. A second drive link mechanism 146 is provided between the attachment 144 and the third arm 142, so that the second drive link mechanism 146 drives the quick-change device 148 to rotate, so that the quick-change device 148 can drive the attachment 144 to achieve a larger angle of pitch, which can improve the demolition efficiency of the demolition arm 140. Specifically, at least a portion of the second drive link mechanism 146 is rotatably connected to the attachment 144 via a hinge, and at least a portion of the second drive link mechanism 146 is rotatably connected to the third arm 142 via a hinge, so as to drive the attachment 144 to produce a larger pitch angle, thereby significantly improving the working efficiency and economic benefits of the attachment 144.

[0065] Example 5

[0066] like Figure 5 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0067] The second driving link mechanism 146 includes: a second driving mechanism 1466, two third links 1462 and two fourth links 1464, the two third links 1462 are respectively rotatably connected to the opposite sides of the third section arm 142 through one end thereof; the two fourth links 1464 are respectively rotatably connected to the quick-change device 148 through one end thereof, and the two fourth links 1464 are respectively rotatably connected to the corresponding third links 1462 through the other end thereof; one end of the second driving mechanism 1466 is rotatably connected to the third section arm 142, and the other end of the second driving mechanism 1466 is rotatably connected to the two third links 1462.

[0068] In this embodiment, two third links 1462 are provided, which are rotatably connected to opposite sides of the third section arm 142 respectively; two fourth links 1464 are provided, which are spaced apart from each other, and one end of the fourth link 1464 is rotatably connected to the attachment 144, and the other end of the fourth link 1464 is rotatably connected to the corresponding third link 1462. It can be seen that the two third links 1462 and the two fourth links 1464 constitute a four-bar linkage, one end of one third link 1462 is rotatably connected to one side of the third section arm 142, one end of the other third link 1462 is rotatably connected to the other side of the third section arm 142, and the two third links 1462 are arranged opposite to each other. One end of one fourth link 1464 is rotatably connected to the attachment 144, one end of the other fourth link 1464 is rotatably connected to the attachment 144, and the two fourth links 1464 are arranged opposite to each other. The third link 1462 and the fourth link 1464 on the same side are rotatably connected, and the two fourth links 1464 are respectively connected to the second driving mechanism 1466. The third link 1462 and the fourth link 1464 are respectively provided with two intersection points, so that the structure of the second driving link mechanism 146 is more stable.

[0069] Example 6

[0070] like Figure 3 and Figure 6 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0071] The work vehicle boom system 100 also includes: a first drive device 150, one end of the first drive device 150 is rotatably connected to the third boom 142, and the other end of the first drive device 150 is rotatably connected to the first boom 110, for driving the third boom 142 to unfold or fold relative to the first boom 110.

[0072] In this embodiment, the first driving device 150 may be a cylinder, and the first driving device 150 drives the third boom 142 to unfold downward relative to the first boom 110, so that the third boom 142 drives the attachment 144 to complete the corresponding action. Alternatively, the first driving device 150 drives the third boom 142 to fold upward relative to the first boom 110, so that after the work vehicle boom system 100 is folded, the third boom 142 and the first boom 110 can be located on the same plane, saving space.

[0073] Example 7

[0074] like Figure 3 and Figure 6 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0075] The first boom 110 , the second boom 120 , and the third boom 142 each have a box structure.

[0076] In this embodiment, the first boom 110, the second boom 120, and the third boom 142 are respectively made into box structures, which can improve the structural strength and rigidity of the first boom 110, the second boom 120, and the third boom 142, and improve the application scope and efficiency of the work vehicle boom system 100.

[0077] Example 8

[0078] like Figure 7 and Figure 8 As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0079] The work vehicle boom system 100 also includes: a fourth boom 160 and a second drive device 170, one end of the fourth boom 160 is rotatably connected to an end of the second boom 120 away from the first boom 110; one end of the second drive device 170 is rotatably connected to the second boom 120, and the other end of the second drive device 170 is rotatably connected to the fourth boom 160, for driving the second boom 120 to unfold or fold, and in the folded state, the fourth boom 160 is at least partially located above the second boom 120; wherein the fourth boom 160 has a box structure.

[0080] In this embodiment, one end of the fourth arm 160 is rotatably connected to the second arm 120, and the second drive device 170 is disposed between the fourth arm 160 and the second arm 120, and is used to drive the second arm 120 to unfold or fold. Specifically, one end of the fourth arm 160 is rotatably connected to the second arm 120 through a hinge, so that the second arm 120 can be folded or unfolded relative to the fourth arm 160. The second drive device 170, such as a combination of a cylinder or a gear and a drive motor, can be used as a power source for the second arm 120 to fold or unfold. The second drive device 170 drives the second arm 120 so that the second arm 120 is folded below the fourth arm 160, saving space. The fourth arm 160 also has a box structure, which improves the structural strength and rigidity of the fourth arm 160. The first boom 110 , the second boom 120 , the third boom 142 and the fourth boom 160 are respectively made into a box structure, and the box structure includes a frame structure surrounded by a top plate, two side plates and a bottom plate.

[0081] Example 9

[0082] like Figure 7 and Figure 8As shown, this embodiment provides a work vehicle boom system 100. In addition to the technical features of the above embodiment, this embodiment also includes the following technical features:

[0083] The work vehicle boom system 100 also includes: a rotating device 180 and a third driving device 190, the rotating device 180 is rotatably connected to the other end of the fourth boom 160 away from the second boom 120; one end of the third driving device 190 is rotatably connected to the rotating device 180, and the other end of the third driving device 190 is rotatably connected to the fourth boom 160, and is used to drive the fourth boom 160 to unfold or fold relative to the rotating device 180.

[0084] In this embodiment, the third driving device 190 is disposed between the slewing device 180 and the fourth boom 160, and the slewing device 180 is rotatably connected to the fourth boom 160. The slewing device 180 can realize the circumferential rotation of the working vehicle boom system 100, and can improve the working range of the working vehicle boom system 100. The third driving device 190 can be a combination of a cylinder or a gear and a driving motor, so that the fourth boom 160 can be folded or unfolded relative to the slewing device 180.

[0085] Example 10

[0086] like Fig. 9 As shown, this embodiment provides a work vehicle 10, including: a chassis 200, a vehicle body 300, a support system 400 and a work vehicle arm system 100 in any embodiment, the vehicle body 300 is arranged on the chassis 200; the support system 400 is arranged in the vehicle body 300, for supporting the vehicle body 300; the work vehicle arm system 100 is connected to the vehicle body 300.

[0087] In this embodiment, the work vehicle 10 can be a fire truck, etc. Since the work vehicle 10 provided according to the embodiment of the present invention includes the work vehicle boom system 100 according to any embodiment of the present invention, it has all the beneficial effects of the work vehicle boom system 100 according to any embodiment of the present invention.

[0088] Embodiment 11

[0089] like Figure 2As shown, this embodiment provides a work vehicle boom system 100 and a work vehicle 10, wherein the work vehicle boom system 100 includes a first boom 110, a second boom 120, a third boom 142, a fourth boom 160, a third drive device 190, a second drive device 170, a first drive device 150, a first drive mechanism 134, a first connecting rod mechanism 132, a third connecting rod 1462, a fourth connecting rod 1464, a second drive mechanism 1466 and an attachment 144, and the third boom 142, the first boom 110, the second boom 120 and the fourth boom 160 are sequentially connected to each other in a strip shape, as shown in FIG. Figure 2 and Figure 3 The figure shows the facade demolition state of the working vehicle arm system 100. The working vehicle arm system 100 has high strength and rigidity. The quick-change device 148 is a quick-change device. Through the quick-change device, various attachments 144 can be easily replaced to demolish brick walls, concrete, billboards, color steel plates, anti-theft mesh windows, glass curtain walls, etc., to complete various demolition tasks. The working vehicle arm system 100 can also adopt a truss structure, a multi-section arm, and a fully foldable type.

[0090] When it is necessary to Figure 7 The top is removed and as shown Figure 8 When performing demolition across the obstacle 30 as shown, in the demolition state, by expanding the working vehicle arm system 100 to a corresponding angle, the operating range of the fire truck is expanded and the space for operation is large, so as to reach the location of the demolition point and complete the complex demolition and rescue mission.

[0091] When the fire truck is performing demolition and excavation work, the bucket, hydraulic shears or breaker hammer and other accessories 144 are quickly replaced through the quick-change device, and then each section arm is quickly unfolded under the action of the cylinder force and adjusted to the required posture to achieve rapid demolition of brick walls, billboards, color steel plates, anti-theft mesh windows and other operations to complete various facade demolition tasks. When performing demolition on the top or across obstacles 30, by unfolding the first drive mechanism 134, the two first connecting rods 1322 and the two second connecting rods 1324 are rotated with each other under the action of the four-bar mechanism of the first connecting rod mechanism 142, driving the rear first section arm 110 to unfold more than 180°, so as to reach the position of the demolition point by adjusting the corresponding position of the section arm to perform the corresponding demolition and rescue tasks. After the demolition is completed, the corresponding section arm is retracted so that each section arm is stacked in sequence to achieve the following results. Fig. 9 The arm is shown in the folded state, which can complete a quick transition.

[0092] In summary, the beneficial effects of the embodiments of the present invention are as follows:

[0093] 1. A foldable work vehicle boom system 100 is adopted, which is composed of a plurality of section arms. The first section arm 110 connected to the demolition arm 140 can be unfolded at an angle through the first driving link mechanism 130 to enable top demolition of the building 20 or demolition operations across obstacles 30, thereby expanding the demolition range and improving the demolition efficiency.

[0094] 2. Each boom section adopts a box structure, which is welded by high-strength steel plates and has sufficient strength and rigidity.

[0095] In the embodiments according to the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments according to the present invention can be understood according to specific circumstances.

[0096] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the present invention.

[0097] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments according to the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] The above are only preferred embodiments according to the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various modifications and changes may be made according to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included in the protection scope of the embodiments of the present invention.

Claims

1. A work vehicle boom system, characterized in that: include: First section of arm; A breaking arm, one end of which is rotatably connected to the first arm section; A second arm, one end of which is rotatably connected to an end of the first arm away from the breaking arm; A first driving link mechanism is rotatably connected to the first section arm and the second section arm respectively, and is used for driving the first section arm to unfold or fold relative to the second section arm, and in a folded state, at least a portion of the first section arm and the breaking arm are located below the second section arm, and the first section arm and the breaking arm are distributed in a line after folding, and are generally distributed in the horizontal direction.

2. The work vehicle boom system according to claim 1, characterized in that: The first driving linkage mechanism comprises: A first connecting rod mechanism is provided between the first joint arm and the second joint arm, and the first connecting rod mechanism is rotatably connected to the first joint arm and the second joint arm respectively; The first driving mechanism has one end rotatably connected to the second joint arm, and the other end rotatably connected to the first connecting rod mechanism.

3. The working vehicle boom system according to claim 2, characterized in that: The first linkage mechanism comprises: Two first connecting rods are rotatably connected to opposite sides of the second joint arm through one end thereof; Two second connecting rods, each rotatably connected to opposite sides of the first joint arm through one end thereof, and each rotatably connected to the first driving mechanism through the other end thereof; Wherein, the two first connecting rods are rotatably connected to the second connecting rod through the other ends thereof respectively.

4. The work vehicle boom system according to claim 1, characterized in that: The breaking arm comprises: A third arm, one end of which is rotatably connected to an end of the first arm away from the second arm; A quick-change device, rotatably connected to an end of the third arm away from the first arm; An accessory connected to the quick-change device; The second driving link mechanism is rotatably connected to the third section arm and the quick change device respectively, and is used for driving the quick change device to rotate.

5. The work vehicle boom system according to claim 4, characterized in that: The second driving linkage mechanism comprises: Two third connecting rods are rotatably connected to opposite sides of the third section arm through one end thereof; Two fourth connecting rods are respectively rotatably connected to the quick-change device through one end thereof, and are respectively rotatably connected to the corresponding third connecting rod through the other end thereof; The second driving mechanism has one end rotatably connected to the third joint arm, and the other end rotatably connected to the two third connecting rods.

6. The work vehicle boom system according to claim 4, characterized in that: Also includes: The first driving device has one end rotatably connected to the third section arm and the other end rotatably connected to the first section arm, and is used for driving the third section arm to unfold or fold relative to the first section arm.

7. The work vehicle boom system according to claim 4, characterized in that: The first section arm, the second section arm and the third section arm respectively have a box structure.

8. The work vehicle boom system according to any one of claims 1 to 7, characterized in that: Also includes: A fourth arm, one end of which is rotatably connected to an end of the second arm away from the first arm; a second driving device, one end of which is rotatably connected to the second arm, and the other end of which is rotatably connected to the fourth arm, for driving the second arm to unfold or fold, and in a folded state, the fourth arm is at least partially located above the second arm; Wherein, the fourth arm has a box structure.

9. The work vehicle boom system according to claim 8, characterized in that: Also includes: A slewing device, rotatably connected to the other end of the fourth arm away from the second arm; The third driving device has one end rotationally connected to the rotating device and the other end rotationally connected to the fourth arm, and is used for driving the fourth arm to unfold or fold relative to the rotating device.

10. A working vehicle, characterized in that: include: Chassis; A vehicle body, arranged on the chassis; A support system, disposed in the vehicle body, for supporting the vehicle body; The work vehicle boom system according to any one of claims 1 to 9, connected to the vehicle body.

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