CN113323065B

CN113323065B - Working vehicle

Info

Publication number: CN113323065B
Application number: CN202110648220.5A
Authority: CN
Inventors: 张宝海; 张勇; 孙占瑞
Original assignee: Jiangsu Xugong Construction Machinery Research Institute Co ltd
Current assignee: Jiangsu Xugong Construction Machinery Research Institute Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-12-09
Anticipated expiration: 2041-06-10
Also published as: CN113323065A

Abstract

The invention discloses a working vehicle, which has a connection state and a separation state and comprises: a locking member; a vehicle body including a first connecting portion and a second connecting portion; an on-vehicle member that is connected to the vehicle body in a connected state and is separated from the vehicle body in a separated state, the on-vehicle member including a third connecting portion and a fourth connecting portion; one of the first connecting part and the third connecting part comprises a first open slot, the other of the first connecting part and the third connecting part comprises a first pin shaft, and in the connecting state, the first pin shaft is matched with the first open slot so as to limit the third connecting part to move towards the direction close to the second connecting part; one of the second connecting part and the fourth connecting part comprises a second open slot, the other of the second connecting part and the fourth connecting part comprises a second pin shaft, and the second pin shaft and the second open slot are configured as follows: when the separation state is switched to the connection state, the second pin shaft enters the second open slot from the notch of the second open slot, and the second pin shaft is matched with the second open slot after being inserted into the second open slot and rotating for an angle relative to the second open slot; in a connection state, the second opening groove limits the second pin shaft to move out of the notch of the second pin shaft and limits the fourth connecting part to move towards the direction close to the first connecting part, and the locking piece limits the second pin shaft to rotate relative to the second opening groove.

Description

Working vehicle

Technical Field

The invention relates to the field of working machinery, in particular to a working vehicle.

Background

In modern society, a large number of working vehicles are used, for example, construction machines such as loaders and excavators, and special vehicles such as road sweepers and rescue vehicles. Along with social development, requirements for operation vehicles are continuously developed and changed, and requirements for modular design, rapid disassembly and assembly and the like of the operation vehicles are increased, for example, various natural disasters frequently occur in China, disasters on-site roads and bridges are seriously damaged, conventional engineering machinery cannot quickly reach a disaster site to carry out rescue, the modular design of equipment is provided for the problem, a whole vehicle is disassembled into a plurality of modules, the modules are transported to the disaster site through air, and the modules are put into rescue after being assembled on site. In order to improve the rescue efficiency, the assembly time is required to be as short as possible, so that the connection and installation structure between the modules is as simple and reliable as possible, and the modules are convenient to disassemble and assemble quickly.

Disclosure of Invention

The invention aims to provide a working vehicle which can be quickly and reliably assembled and disassembled between an upper part and a vehicle body.

The invention discloses a working vehicle, which has a connection state and a separation state and comprises:

a locking member;

a vehicle body including a first connecting portion and a second connecting portion;

an on-vehicle component that is connected to the vehicle body in the connected state and is separated from the vehicle body in the separated state, the on-vehicle component including a third connecting portion and a fourth connecting portion;

one of the first connecting part and the third connecting part comprises a first open slot, the other one of the first connecting part and the third connecting part comprises a first pin shaft, and in the connecting state, the first pin shaft is matched with the first open slot so as to limit the third connecting part to move towards the direction close to the second connecting part; one of the second connecting part and the fourth connecting part comprises a second open slot, the other of the second connecting part and the fourth connecting part comprises a second pin shaft, and the second pin shaft and the second open slot are configured as follows: when the separation state is switched to the connection state, the second pin shaft enters the second open slot from the notch of the second open slot, and the second pin shaft is inserted into the second open slot and then rotates for an angle relative to the second open slot and then is matched with the second open slot; in the connection state, the second open slot limits the second pin shaft to move out of the notch of the second pin shaft and limits the fourth connecting part to move towards the direction close to the first connecting part, and the locking piece limits the second pin shaft to rotate relative to the second open slot.

In some embodiments, in the connection state, the first opening groove and the first pin are matched to limit the first pin to be away from the first opening groove along a direction of a perpendicular line of a plane formed by the center lines of the first pin and the second pin together.

In some embodiments, the first open slot includes a first arc-shaped slot, an arc of the first arc-shaped slot is greater than pi/2, a plane passing through a center line of the first pin and perpendicular to a plane formed by the center lines of the first pin and the second pin intersects the first arc-shaped slot, and a plane formed by the center lines of the first pin and the second pin intersects the first arc-shaped slot.

In some embodiments, the first arc-shaped groove is a semicircular groove, and the first open groove further includes a guide wall tangent to an end of a groove wall of the semicircular groove away from the second connection portion.

In some embodiments, the second open slot includes a second arc-shaped slot, an arc of the second arc-shaped slot is greater than Π, and a portion of the second pin, which is engaged with the second open slot, includes an arc surface matched with the second arc-shaped slot.

In some embodiments, the tip of second round pin axle is equipped with and revolves the portion of twisting, the locking piece is including revolving to twist and twist a set and a mounting, revolve twist the piece including revolve twist the handle and be located revolve the tip of twisting the handle and with revolve the head of twisting of portion adaptation, when separation state switches to connection status, revolve twist the piece through revolving twist the portion of twisting so that second round pin axle is relative the second open slot rotates, at connection status, revolve twist the head with revolve the cooperation of twisting the portion, the mounting will revolve twist the handle with the connecting portion fixed connection that second open slot belonged to.

In some embodiments, a polygonal head is arranged at the end of the second pin shaft, and the screwing head comprises a polygonal hole matched with the polygonal head.

In some embodiments, a bolt hole is formed in the connecting portion where the second open groove is located, a connecting hole is formed in the screwing piece, the fixing piece includes a bolt matched with the bolt hole and the connecting hole, a stabilizing groove is further formed in the connecting portion where the second open groove is located, the shape of the stabilizing groove is matched with the outer contour of the screwing handle, and in the connecting state, the stabilizing groove is in clearance fit with the screwing handle.

In some embodiments, the vehicle upper part includes an operation chamber for operating the work vehicle, and the third connection portion and the fourth connection portion are provided at a bottom of the operation chamber.

In some embodiments, the vehicle body includes a rotating table, the first connecting portion and the second connecting portion are disposed on the rotating table, the first connecting portion includes two vertical plates fixed to the rotating table in parallel with each other and two first open slots respectively disposed on the two vertical plates, the third connecting portion includes two first mounting plates in parallel with each other and the first pin fixedly connected between the two first mounting plates, the second connecting portion includes two bearing seats fixed to the rotating table, two bearings mounted on the two bearing seats in parallel with each other, and the second pin having two ends respectively matched with the two bearings, the fourth connecting portion includes two second mounting plates in parallel with each other and two second open slots respectively disposed on the two second mounting plates, the second connecting portion includes a second arc-shaped open slot having an arc degree greater than pi, the two ends of the second pin and the side surface of the portion where the two ends of the second open slot are matched with each other, and a connecting plane connecting the two ends of the second open slot, the axial end of the second pin includes a locking head and a bolt locking head, the first connecting portion includes a hexagonal bolt hole matched with the hexagonal bolt hole, the hexagonal bolt hole and the hexagonal bolt stabilizing handle matched with the hexagonal bolt hole, and the hexagonal bolt hole corresponding to be screwed with the hexagonal bolt hole, and the bolt stabilizing handle are disposed on the hexagonal bolt hole;

in a connected state, the two vertical plates are located on the inner sides of the two first mounting plates, the two bearing seats are located on the inner sides of the two second mounting plates, the hexagonal holes are matched with the hexagonal heads, the bolt is fixedly connected with the connecting holes and the bolt holes, and the stabilizing grooves are in clearance fit with the screwing handles.

In some embodiments, the work vehicle comprises an excavator, the body comprises a turntable, and the above-vehicle component comprises a cab.

According to the work vehicle provided by the invention, the first open slot and the first pin shaft are matched, and the second open slot and the second pin shaft are matched, so that the first open slot and the first pin shaft can be quickly matched during connection, and preliminary positioning is realized. The size of the second pin shaft along one direction is smaller than the size of a notch of the second open slot, the size of the second pin shaft along the other direction is larger than the size of the notch of the second open slot, when the second pin shaft is inserted into the second open slot, the second pin shaft enters the second open slot through the small-size direction, and after the second pin shaft enters the second open slot, the second pin shaft rotates for an angle relative to the second open slot, so that the large-size direction faces the notch of the second open slot, the notch can limit the second pin shaft to move out, the relative angle between the second pin shaft and the second open slot is locked through the locking piece, therefore, the quick and reliable connection between the vehicle-mounted component and the vehicle body can be realized, and on the contrary, the quick disassembly between the vehicle-mounted component and the vehicle body can also be realized through the reverse measures such as dismantling the locking piece and screwing the second pin shaft. When the work vehicle is in modularized design, the technical scheme can realize the disassembly of the quick connection vehicle among a plurality of modules of the work vehicle.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

fig. 1 is a partial structural schematic view of a work vehicle according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first connecting portion of the work vehicle shown in fig. 1;

fig. 3 is a front view of the first connecting portion shown in fig. 2;

FIG. 4 is a left side view of the first connecting portion shown in FIG. 2;

fig. 5 is a schematic view of a third connecting portion of the work vehicle shown in fig. 1;

fig. 6 is a schematic structural view of a fourth connecting portion of the work vehicle shown in fig. 1;

fig. 7 is a schematic cross-sectional view of a second connecting portion of the work vehicle shown in fig. 1;

fig. 8 is a schematic structural view of the second connecting portion and the fourth connecting portion when the work vehicle shown in fig. 1 is switched from the separated state to the connected state;

fig. 9 is a schematic structural view of the second connecting portion and the fourth connecting portion when the work vehicle shown in fig. 1 is switched from the separated state to the connected state;

fig. 10 is a schematic structural view of the work vehicle shown in fig. 1 in a connected state in which the second connecting portion and the fourth connecting portion are connected.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The work vehicle of the embodiment shown in fig. 1 has a connected state and a disconnected state, and includes a lock, a vehicle body 100, and an on-vehicle member 200.

The vehicle body 100 includes a first connecting portion 1 and a second connecting portion 2;

the vehicle upper part 200 is connected to the vehicle body 100 in a connected state, the vehicle upper part 200 is separated from the vehicle body 100 in a separated state, and the vehicle upper part 200 includes the third connecting portion 3 and the fourth connecting portion 4.

The vehicle upper part 200 refers to a part of the work vehicle having a certain function and mounted to the vehicle body 100, such as a cab including a cab, a fuel tank, a hydraulic tank, an engine, and the like, and in the embodiment shown in fig. 1, the vehicle upper part 200 includes a cab including a cab body carrier to which the third connection portion 3 and the fourth connection portion 4 are mounted. The vehicle body 100 includes a link frame 101, the first connecting portion 1 and the second connecting portion 2 are mounted to the link frame 101, and the vehicle upper member 200 is mounted to the vehicle body 100 by being connected to the link frame 101.

As shown in fig. 1 to 5, one of the first connecting portion 1 and the third connecting portion 3 includes a first opening groove 11, and the other includes a first pin 31, and in the connecting state, the first pin 31 cooperates with the first opening groove 11 to limit the third connecting portion 3 from moving toward the second connecting portion 2.

In the embodiment shown in fig. 1, the first connection portion 1 includes a first opening groove 11, and the third connection portion 3 includes a first pin 31. The first pin 31 is matched with the first opening groove 11, that is, the side surface of the first pin 31 is in contact with the wall surface of the first opening groove 11, the cross section of the first pin 31 may be rectangular, polygonal or other shapes, and in the illustrated embodiment, the first pin 11 is cylindrical. In the connected state, as in the embodiment shown in fig. 1, the first opening groove 11 restricts the first pin 31 from moving toward the second connecting portion 2.

One of the second connecting portion 2 and the fourth connecting portion 4 includes a second opening groove 41, and the other includes a second pin 21, and the second pin 21 and the second opening groove 41 are configured as follows: when the separation state is switched to the connection state, the second pin 21 enters the second opening groove 41 from the notch of the second opening groove 41, and after being inserted into the second opening groove 41, the second pin rotates by an angle relative to the second opening groove 41 and then is matched with the second opening groove 41; in the connection state, the second opening groove 41 limits the second pin 21 from moving out of the notch thereof and limits the fourth connecting portion 4 from moving toward the direction close to the first connecting portion 1, and the locking member limits the second pin 21 from rotating relative to the second opening groove 41.

The movement, rotation, and the like between the second pin 21 and the second opening groove 41 are relative movements, in some embodiments not shown in the drawings, the second connecting portion 2 includes the second opening groove 41, the fourth connecting portion 4 includes the second pin 21, and in the process of mounting the vehicle upper component 200 to the vehicle body 100, the second pin 21 can be inserted into the second opening groove 41 through the movement and rotation of the second opening groove 41, and the second pin 21 can rotate and the like relative to the second opening groove 41. In the embodiment shown in fig. 1, the second connection portion 2 includes the second pin 21, and the fourth connection portion 4 includes the second open groove 41, as shown in fig. 8, when the disconnected state is switched to the connected state, the second pin 21 rotates so that when the second open groove 41 is moved to be engaged therewith, the small dimension direction of the cross section of the second pin 21 is aligned with the notch position (even though L3 is aligned with L6 in the drawing) so that the second pin 21 can be inserted into the second open groove 41, and after the second pin 21 enters the second open groove 41, as shown in fig. 9, the second pin 21 is rotated so that the small dimension direction of the cross section of the second pin 21 is rotated out of alignment with the notch of the second open groove 41 so that the cross section of the second pin 21 is aligned with the notch of the second open groove 41 by a dimension larger than the notch so as not to be removed therefrom, the second open groove 41 restricts the second pin 21 from being removed therefrom so that the second pin 21 is locked into the groove thereof by the second open groove 41. The groove wall of the second open groove 41 restricts the second pin 21 from moving toward the first connection portion, so that the vehicle upper member 200 can be fixedly connected to the vehicle body 100.

The working vehicle of the embodiment is provided with the first opening groove 11 and the first pin 31 which are matched and the second opening groove 41 and the second pin 21 which are matched between the vehicle upper part 200 and the vehicle body 100, and when the working vehicle is connected, the first opening groove 11 and the first pin 31 can be quickly matched, so that preliminary positioning is realized. The size of the second pin 21 in one direction is smaller than that of the notch of the second opening groove 41, the size of the second pin in the other direction is larger than that of the notch of the second opening groove 41, when the second pin 21 is inserted into the second opening groove 41, the second pin enters the second opening groove 41 through the small-size direction, and after entering the second opening groove 41, the second pin rotates for an angle relative to the second opening groove 41, so that the large-size direction faces the notch of the second opening groove 41, the notch can limit the second pin 21 to move out, and then the relative angle between the second pin 21 and the second opening groove 41 is locked through the locking piece, so that the quick and reliable connection between the vehicle upper part 200 and the vehicle body 100 can be realized, and conversely, the quick detachment between the vehicle upper part 200 and the vehicle body 100 can also be realized through reverse measures such as dismantling the locking piece and screwing the second pin 21. When the work vehicle is in modularized design, the technical scheme can realize the disassembly of the quick connection vehicle among a plurality of modules of the work vehicle.

In some embodiments, as shown in fig. 1 to 3, in the connection state, the first opening groove 11 and the first pin 31 are engaged to limit the first pin 31 from moving away from the first opening groove 11 along a perpendicular direction of a plane formed by the center lines of the first pin 31 and the second pin 21, that is, when the first pin 31 is engaged with the first opening groove 11 and the second pin 21 is engaged with the fourth opening groove 41, the groove wall of the first opening groove 11 can limit the rotation of the vehicle upper component 200 around the second connection portion 2 in two directions by limiting the first pin 31. In the present embodiment, the first open groove 11 restricts the first pin 31 from moving away from the first open groove 11 in the direction of the perpendicular to the plane formed by the center lines of the first pin 31 and the second pin 21 by the groove walls in the vicinity of the groove bottom and the notch thereof.

In some embodiments, as shown in fig. 1 to 3, the first open slot 11 includes a first circular arc-shaped slot 111, a radian of the first circular arc-shaped slot 111 is greater than pi/2, a plane of a plane formed by a center line of the first pin 31 and a plane formed by the center lines of the first pin 31 and the second pin 21 together intersects with the first circular arc-shaped slot 111, and the plane formed by the center lines of the first pin 31 and the second pin 21 together intersects with the first circular arc-shaped slot 111, that is, an outer surface of the first pin 31 also includes a circular arc surface corresponding to the first circular arc-shaped slot 111, the radian of the first circular arc-shaped slot 111 is at least greater than a quarter of a circle, and slot walls at two ends of the first circular arc-shaped slot can limit the first pin 31 from moving away from the first open slot 11 along a perpendicular direction of the plane formed by the center lines of the first pin 31 and the second pin 21 together.

In some embodiments, as shown in fig. 1 to 3, the first arc-shaped groove 111 is a semicircular groove, and the first open groove 11 further includes a guide wall 112 tangent to an end of a groove wall of the semicircular groove far from the second connection portion 2. In the embodiment shown in the figures, the included angle between the guide wall 112 and the perpendicular direction of the plane formed by the center lines of the first pin 31 and the second pin 21 in the connection state is α, and by providing the guide wall 112 and the semicircular groove, it is convenient to process the first opening groove 11 and to quickly fit the first opening groove 11 and the first pin 31 when the separation state is switched to the connection state.

In some embodiments, as shown in fig. 7 to 10, the second opening groove 41 includes a second arc-shaped groove 411, the arc of the second arc-shaped groove 411 is greater than pi, and the portion of the second pin 21 that is engaged with the second opening groove 41 includes an arc surface that matches the second arc-shaped groove 411. The radian of second circular-arc groove 411 is greater than pi, thereby the size of the notch of second circular-arc groove 411 will be less than the diameter size of the circle that second circular-arc groove 411 corresponds, second round pin axle 21 includes the arc surface with second circular-arc groove 411 assorted, in the connected state, the arc surface of second round pin axle 21 cooperates with second circular-arc groove 411, the cross sectional dimension of second round pin axle 21 equals the diameter size of the circle that second circular-arc groove 411 corresponds in some directions, thereby be greater than the size of the notch of second circular-arc groove 411. Meanwhile, the size of the cross section of the second pin shaft 21 is smaller than the size of the notch of the second circular-arc groove 411 in some directions, that is, the size of the small-sized direction is smaller than the size of the notch, so that when the second pin shaft 21 and the second circular-arc groove 411 are at a proper relative angle, as shown in fig. 8, the second pin shaft 21 can be inserted into the second circular-arc groove 411. When the second pin 21 enters the second arc-shaped groove 411 and is rotated by an angle, as shown in fig. 9, the notch of the second arc-shaped groove 411 can restrict the second pin 21 from moving away from the notch. In the embodiment shown in the figure, the part of the second pin shaft which is matched with the second circular arc-shaped groove is formed by cutting a part of a cylinder through a plane which is parallel to the axis of the cylinder, and a plane can be milled on the side surface of the cylinder through milling in the production process as shown in the figure.

In some embodiments, the first pin 11 and the second pin 21 may also include pins having other shapes such as prism.

In some embodiments, as shown in fig. 7 to 10, the end portion of the second pin 21 is provided with a screwing portion 211, the locking member includes a screwing member 5 and a fixing member, the screwing member 5 includes a screwing handle 52 and a screwing head 51 located at the end portion of the screwing handle 52 and adapted to the screwing portion 211, when the separation state is switched to the connection state, the screwing member 5 rotates the second pin 21 relative to the second open slot 41 by screwing the screwing portion 211, and when the connection state is switched, the screwing head 51 is matched with the screwing portion 211, and the fixing member fixedly connects the connection portion where the screwing handle 52 is located with the second open slot 41. In this embodiment, by the screwing element 5, the second pin 21 may be screwed at an initial stage of the matching between the second opening groove 41 and the second pin 21, so that the small-size direction of the second pin 21 is aligned with the notch of the second opening groove 41, and the second pin 21 is conveniently inserted into the second opening groove, and after the second pin 21 enters the second opening groove, the screwing element 5 screws the screwing portion 211 to relatively rotate the second pin 21 relative to the second opening groove 41 by an angle. Finally, the screw 5 is engaged with the screw 211, and the fixing member fixes the screw 5 relative to the connection portion (the fourth connection portion in the drawing) of the second opening groove 41, so that the relative angle between the second pin 21 and the second opening groove 41 can be locked. The screw 5 in this embodiment can be used both as a locking in the connected state and as a wrench when switching from the disconnected state to the connected state.

In some embodiments, as shown in fig. 7 to 10, the end of the second pin 21 is provided with a polygonal head, and the screw head 51 includes a polygonal hole matching with the polygonal head.

In some embodiments, as shown in fig. 6 to 10, the connecting portion of the second opening groove 41 is provided with a bolt hole, the screw member 5 is provided with a connecting hole, the fixing member includes a bolt matching with the bolt hole and the connecting hole, the connecting portion of the second opening groove 41 is further provided with a stabilizing groove 42, the shape of the stabilizing groove 42 matches with the outer contour of the screw handle 52, and in the connecting state, the stabilizing groove 42 is in clearance fit with the screw handle 52. The stabilizing groove 42 can play a role in preventing loosening of the screwing handle 52, when the fixing piece loosens, the stabilizing groove 42 can enable the screwing handle 52 to keep a position, the relative angle between the screwing part 211 and the second opening groove 41 is basically kept unchanged, and meanwhile, when the vibration is too large, the acting force of the screwing handle 52 on the fixing piece can be shared, so that the fixing piece is prevented from loosening.

In some embodiments, the vehicle upper part 200 includes an operation room for operating the work vehicle, and the third connecting portion 3 and the fourth connecting portion 4 are provided at the bottom of the operation room.

In some embodiments, the vehicle body 100 includes a rotating platform, the first connecting portion 1 and the second connecting portion 2 are disposed on the rotating platform, the first connecting portion 1 includes two vertical plates 13 fixed on the rotating platform in parallel with each other and two first open slots 11 respectively disposed on the two vertical plates 13, the third connecting portion 3 includes two first mounting plates 32 in parallel with each other and a first pin 31 fixedly connected between the two first mounting plates, the first connecting portion 1 further includes a semicircular sleeve 12, and the third connecting portion 3 further includes a mounting member 332 and a gasket 331 for fixedly mounting the first pin 31.

The second connecting portion 2 includes two bearing seats 22 fixed on the turntable and two bearings 23 installed on the two bearing seats in parallel with each other, the two bearings 23 are respectively sleeved on two ends of the second pin shaft 21, and the second connecting portion 2 further includes a cylinder 25 for sleeving the second pin shaft 21 and a bearing seat mounting plate 24 for mounting the bearing seat 22. The fourth connecting portion 4 includes two second mounting panels 43 that are parallel to each other and locates two second open slots 41 on two second mounting panels 43 respectively, second open slot 41 includes that the radian is greater than pi second circular-arc groove 411, the both ends of second round pin axle 21 and the side of two second open slot 41 complex parts all include the arc surface that matches with the shape of corresponding second open slot 41 and the connection plane at the both ends of connecting the arc surface, the axial one of second round pin axle 21 is served and is equipped with the hexagon head, the locking piece is including twisting spare 5 and bolt, it includes twisting handle 52 and the head 51 of twisting that is located the tip of twisting handle 52 and with twisting portion 211 looks adaptation to twist spare 5 to twist spare, it includes the interior hexagon hole with hexagon head assorted to twist head 51, be equipped with the connecting hole on the handle, be equipped with bolt hole and stable groove 42 on the second mounting panel that corresponds with the tip that is equipped with the hexagon head of second round pin axle 21, the shape and the outline phase-match that twists handle 52 of stable groove 42.

In the connected state, the two vertical plates 13 are located inside the two first mounting plates 32 (i.e. the distance L1 between the outer sides of the two first mounting plates 32 is smaller than the distance between the inner sides of the two first mounting plates 32), the two bearing seats are located inside the two second mounting plates (i.e. the distance L2 between the outer sides of two bearing seats 22 is smaller than the distance between the inner sides of two second mounting plates), the hexagon socket is matched with the hexagon head, the bolt is fixedly connected with the connecting hole and the bolt hole, and the stabilizing groove 42 is in clearance fit with the screwing handle 52.

In some embodiments, the work vehicle comprises an excavator, the excavator comprises a rescue excavator, the vehicle body 100 comprises a turntable, and the on-board component 200 comprises a cab. The working vehicle of the embodiment can realize the modularized installation design of the rescue excavator, and is convenient for quick transportation, assembly and the like.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications of the embodiments of the invention or equivalent substitutions for parts of the technical features are possible; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. A work vehicle having a connected state and a disconnected state, comprising:

a locking member;

a vehicle body (100) including a first connection portion (1) and a second connection portion (2);

an upper vehicle part (200) that is connected to the vehicle body (100) in the connected state and is separated from the vehicle body (100) in the separated state, the upper vehicle part (200) including a third connecting portion (3) and a fourth connecting portion (4);

one of the first connecting part (1) and the third connecting part (3) comprises a first open slot (11), the other of the first connecting part and the third connecting part comprises a first pin shaft (31), and in the connecting state, the first pin shaft (31) is matched with the first open slot (11) to limit the third connecting part (3) to move towards the direction close to the second connecting part (2); one of the second connecting portion (2) and the fourth connecting portion (4) comprises a second open slot (41), the other of the second connecting portion and the fourth connecting portion comprises a second pin (21), and the second pin (21) and the second open slot (41) are configured to: when the separation state is switched to the connection state, the second pin shaft (21) enters the second opening groove (41) from the notch of the second opening groove (41), and after being inserted into the second opening groove (41), the second pin shaft rotates by an angle relative to the second opening groove (41) and then is matched with the second opening groove (41); in the connection state, the second opening groove (41) limits the second pin shaft (21) to move out of the notch of the second opening groove and limits the fourth connecting part (4) to move towards the direction close to the first connecting part (1), and the locking piece limits the second pin shaft (21) to rotate relative to the second opening groove (41); in the connection state, the first open slot (11) is matched with the first pin shaft (31) to limit the first pin shaft (31) to be far away from the first open slot (11) along the direction of a perpendicular line of a plane formed by the center lines of the first pin shaft (31) and the second pin shaft (21); first open slot (11) include first circular-arc groove (111), the radian of first circular-arc groove (111) is greater than pi/2, crosses the central line and the perpendicular to of first round pin axle (31) with the planar plane that the central line of second round pin axle (21) formed jointly with first circular-arc groove (111) are crossing, just first round pin axle (31) with the plane that the central line of second round pin axle (21) formed jointly with first circular-arc groove (111) are crossing.

2. The work vehicle according to claim 1, characterized in that the first arcuate groove (111) is a semicircular groove, and the first open groove (11) further includes a guide wall that is tangent to an end of a groove wall of the semicircular groove that is remote from the second connecting portion (2).

3. The work vehicle according to claim 1, characterized in that said second open slot (41) comprises a second arcuate slot (411), said second arcuate slot (411) having an arc greater than Π, said portion of said second pin (21) that mates with said second open slot (41) comprising an arcuate surface that mates with said second arcuate slot (411).

4. The work vehicle according to claim 1, characterized in that the end of the second pin (21) is provided with a screwing portion (211), the locking member comprises a screwing member (5) and a fixing member, the screwing member (5) comprises a screwing handle (52) and a screwing head (51) which is located at the end of the screwing handle (52) and is adapted to the screwing portion (211), when the separation state is switched to the connection state, the screwing member (5) rotates the second pin (21) relative to the second opening groove (41) by screwing the screwing portion (211), and when the connection state is switched, the screwing head (51) is matched with the screwing portion (211), and the fixing member fixedly connects the screwing handle (52) to the connection portion where the second opening groove (41) is located.

5. The work vehicle according to claim 4, characterized in that said screwing part (211) comprises a polygonal head provided at the end of said second pin (21), said screwing head (51) comprising a polygonal hole matching said polygonal head.

6. The working vehicle as claimed in claim 4, characterized in that the connecting portion of the second opening groove (41) is provided with a bolt hole, the screwing member (5) is provided with a connecting hole, the fixing member comprises a bolt matched with the bolt hole and the connecting hole, the connecting portion of the second opening groove (41) is further provided with a stabilizing groove (42), the shape of the stabilizing groove (42) is matched with the outer contour of the screwing handle (52), and in the connecting state, the stabilizing groove (42) is in clearance fit with the screwing handle (52).

7. The work vehicle according to claim 1, characterized in that the vehicle upper part (200) comprises an operating chamber for operating the work vehicle, the third connection (3) and the fourth connection (4) being provided at the bottom of the operating chamber.

8. The work vehicle according to claim 7, wherein said vehicle body (100) comprises a rotating table, said first connecting portion (1) and said second connecting portion (2) are disposed on said rotating table, said first connecting portion (1) comprises two vertical plates parallel to each other fixed on said rotating table and two first open grooves (11) respectively disposed on said two vertical plates, said third connecting portion (3) comprises two first mounting plates parallel to each other and said first pin (31) fixedly connected between said two first mounting plates, said second connecting portion (2) comprises two bearing seats fixed on said rotating table, two bearings parallel to each other and two ends respectively mounted on said two bearing seats are respectively engaged with said two bearings, said second pin (21) is engaged with said second connecting portion, said fourth connecting portion (4) comprises two second mounting plates parallel to each other and two second open grooves (41) respectively disposed on said two second mounting plates, said second open groove (41) comprises a second circular arc groove (411) having a radian larger than pi, both ends of said second pin (21) and a locking portion corresponding to said two open grooves (41) are engaged with each other, said second pin (211) is provided with a locking portion, said second circular arc surface (211) having a shape corresponding to a bolt end portion connected to a side surface of said second pin (21) and a bolt portion (211) having a shape matching end portion connected to each other, the screwing piece (5) comprises a screwing handle (52) and a screwing head (51) which is positioned at the end part of the screwing handle (52) and is matched with the screwing part (211), the screwing head (51) comprises an inner hexagonal hole matched with the hexagonal head, the handle is provided with a connecting hole, a second mounting plate corresponding to the end part, provided with the hexagonal head, of the second pin shaft (21) is provided with a bolt hole and a stabilizing groove (42), and the shape of the stabilizing groove (42) is matched with the outer contour of the screwing handle (52);

in a connected state, the two vertical plates are located on the inner sides of the two first mounting plates, the two bearing seats are located on the inner sides of the two second mounting plates, the inner hexagonal holes are matched with the hexagonal heads, the bolt is fixedly connected with the connecting holes and the bolt holes, and the stabilizing groove (42) is in clearance fit with the screwing handle (52).

9. The work vehicle according to any one of claims 1 to 8, characterized in that the work vehicle comprises an excavator, the vehicle body (100) comprises a turntable, and the onboard part (200) comprises an operating room.