Construction machine coupling device

Abstract

The application discloses a connecting device for engineering machinery, which comprises a connecting part for connecting with a first part, a base for connecting with a second part, a mounting part, a locking assembly, a locking cavity, a locking block, an elastic device and a driving part. The elastic device provides an elastic force to make the locking block have a movement tendency of rotating around a first axis to a locking direction and moving along the first axis to a first direction. In a first angle position, the locking block locks the connecting part, and the locking cavity limits the locking block from moving to a direction opposite to the first direction. In a second angle position, the locking block can move along the axis to a direction opposite to the first direction, the connecting part can move to a direction opposite to the first direction, and after the connecting part pushes the locking block and enters the mounting part, the locking block moves to the first direction. The driving part is used for driving the locking block to rotate around the first axis to a direction opposite to the locking direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery parts, in particular to an engineering machinery connecting device. BACKGROUND

[0002] In the field of engineering machinery, it is often necessary to connect parts, for example, excavators, which undertake diversified work tasks, often need to replace different work devices (shovel, hydraulic shear, breaking hammer, etc.) in different application scenarios to meet the needs of diversified work tasks. Therefore, providing an engineering machinery connecting device capable of quickly and reliably connecting and disassembling two parts (such as the work arm and the work device of the excavator) of the engineering machinery can improve the work efficiency of the engineering machinery. SUMMARY

[0003] The purpose of the present application is to provide an engineering machinery connecting device capable of quickly and reliably connecting and disassembling two parts of an engineering machinery.

[0004] The present application discloses an engineering machinery connecting device for connecting a first part and a second part of an engineering machinery, comprising:

[0005] a connecting part for connecting with the first part;

[0006] a base for connecting with the second part, comprising a mounting portion for mounting the connecting part;

[0007] one or more locking assemblies, comprising a locking cavity provided on the base, a locking block rotatably mounted in the locking cavity about a first axis, an elastic device provided between the locking block and the base, and a driving member, the elastic force provided by the elastic device makes the locking block have a movement tendency of rotating about the first axis to a locking direction and moving along the first axis to a first direction, the locking block has a first angular position and a second angular position; in the first angular position, the locking block locks the connecting part located in the mounting portion, the locking cavity limits the movement of the locking block to the direction opposite to the first direction; in the second angular position, the locking block can move along the axis to the direction opposite to the first direction, the connecting part can enter or move out of the mounting portion by pushing the locking block to overcome the elastic force of the elastic device to move to the direction opposite to the first direction, after the connecting part pushes the locking block and enters the mounting portion, the locking block moves to the first direction; the driving member is used to drive the locking block to rotate about the first axis to the direction opposite to the locking direction, and the locking block switches between the first angular position and the second angular position under the action of the driving member and the elastic device.

[0008] In some embodiments, the connecting member comprises a connecting shaft, the mounting portion comprises a U-shaped open slot, and after the connecting shaft is mounted in the U-shaped open slot, the locking block in the first angular position extends into the U-shaped open slot and restricts the connecting shaft from moving away from the U-shaped open slot along the radial direction of the connecting shaft from the side of the connecting shaft away from the slot wall of the U-shaped open slot.

[0009] In some embodiments, two locking assemblies are included, and the locking directions of the locking blocks of the two locking assemblies are opposite.

[0010] In some embodiments, the extending direction of the axis of the connecting shaft after the connecting shaft is mounted in the U-shaped open slot is perpendicular to the first direction.

[0011] In some embodiments, the end of the locking block extending into the U-shaped open slot comprises a cam body formed by sweeping a planar figure along a sweeping straight line perpendicular to the planar figure, the cross section of the cam body is U-shaped, the cam body comprises two end planes parallel to each other at both ends along the extending direction of the cam body, and the top surface of the cam body downstream along the first direction is a curved surface, the end planes of the cam body are parallel to the axis of the connecting shaft mounted in the U-shaped open slot when the locking block is in the first angular position, and the end planes of the cam body are not parallel to the axis of the connecting shaft mounted in the U-shaped open slot when the locking block is in the second angular position.

[0012] In some embodiments, the driving member comprises a driving rod slidable relative to the base, the locking cavities of the two locking assemblies are communicated, and when the driving rod slides and extends between the locking blocks of the two locking assemblies, the driving rod can push the locking blocks of the two locking assemblies to switch from the first angular position to the second angular position.

[0013] In some embodiments, the locking cavity comprises a first cavity upstream along the first direction, a second cavity downstream of the first cavity and communicated with the first cavity, and a third cavity communicated with the second cavity, the third cavity comprises a through hole, the size of the second cavity is greater than the size of the first cavity along at least one direction perpendicular to the first direction, the locking block comprises a first block connected with the elastic device and a second block connected with the first block downstream along the first direction, the second block penetrates through the through hole, the first block is located in the second cavity when the locking block is in the first angular position, and the cavity wall of the first cavity restricts the first block from moving along the direction opposite to the first direction by facing the surface of the second cavity, and the connecting member can push the second block directly to overcome the elastic force of the elastic device to make the first block enter into the first cavity along the direction opposite to the first direction when the locking block is in the second angular position.

[0014] In some embodiments, the mounting shaft is fixedly connected to the base and extends in the first direction, the elastic device comprises a torsion spring arranged around the mounting shaft, the first block is provided with a mounting hole, one end of the mounting shaft is slidably inserted into the mounting hole, the first block is located downstream of the torsion spring and connected to the torsion spring in the first direction, and the elastic force provided by the torsion spring causes the locking block to have a movement tendency of rotating around the first axis in the locking direction and a movement tendency of moving along the first axis in the first direction.

[0015] In some embodiments, the first block comprises a main block provided with the mounting hole and a protruding block connected to the main block and protruding radially relative to the main block, the locking block is always located in the second cavity during the rotation of the locking block from the first angular position to the second angular position, the first cavity comprises a main cavity around the mounting shaft and a protruding cavity connected to the main cavity and protruding radially relative to the main cavity, and when the locking block is located at the second angular position, the connecting component can overcome the elastic force of the elastic device to make the main block enter the main cavity and the protruding block enter the protruding cavity by directly pushing the second block.

[0016] In some embodiments, the protruding block comprises adjacent first and second surfaces, the base is provided with an observation opening for observation, when the locking block is located at the second angular position, the protruding block is located in the observation opening and the first surface can be observed through the observation opening, the second surface is perpendicular to the observation surface of the observation opening, when the locking block is located at the first angular position, the second surface can be observed through the observation opening and the first surface is hidden from view by the second surface.

[0017] In some embodiments, the first and second surfaces are coated with different colors.

[0018] In some embodiments, the first block comprises two protruding blocks, and the first block is a central symmetric structure.

[0019] According to the engineering machinery connecting device provided by the present application, the locking block can be switched between the first angular position and the second angular position, so that the engineering machinery connecting device can be quickly switched between the locked state and the detachable connection state, when the locking block is located at the second angular position, the connecting component can be pushed to enter or move out of the mounting portion to overcome the elastic force of the elastic device, thereby realizing the quick connection or disconnection of the engineering machinery connecting device, and when the locking block is located at the second angular position, the locking assembly can lock the connecting component located in the mounting portion, thereby realizing the reliable connection between the connecting component and the base.

[0020] Other features of the present application, its nature and advantages will become apparent from the following detailed description of the exemplary embodiments of the application with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate exemplary embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0022] Figure 1 Fig. 1 is a partial view of a locking block of a connection device of a working machine according to an embodiment of the present application;

[0023] Figure 2 Fig. 2 is a partial cross-sectional view of the structure shown in Fig. 1 ; Figure 1

[0024] Figure 3 Fig. 3 is a partial view of the locking block of the connection device of the working machine shown in Fig. 1 in a second angular position; Figure 1

[0025] Figure 4 Fig. 4 is a partial cross-sectional view of the structure shown in Fig. 3; Figure 3

[0026] Figure 5 Fig. 5 is a view of a connection device of a working machine according to another embodiment of the present application;

[0027] Figure 6 Fig. 6 is a partial view of a base of the connection device of the working machine shown in Fig. 5; Figure 1

[0028] Fig. 7 is a cross-sectional view of the structure shown in Fig. 6; Figure 7 Figure 6

[0029] Figure 8 Figure 1 Fig. 8 is a view of a locking block of the connection device of the working machine shown in Fig. 5;

[0030] Figure 9 Fig. 9 is a view of a drive member of the connection device of the working machine shown in Fig. 5. Figure 1 DETAILED DESCRIPTION

[0031] ​​​​​​​With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one example embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0032] Unless specifically stated otherwise, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in the examples herein are not limiting. Also, it should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but rather can be assumed to be known by those of ordinary skill in the art. In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other example embodiments of the exemplary embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the disclosure, thus, once one part is defined in one figure, it is not necessary to discuss it further in connection with other figures.

[0033] In the description of the present application, it should be understood that the use of the words "first", "second", etc. to describe components is merely intended to distinguish similar components, and the words do not have special meanings unless otherwise stated. Therefore, the words should not be interpreted as limiting the scope of the present application.

[0034] In the description of the present application, it should be noted that unless otherwise specifically stated and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] like Figures 1 to 9 As shown, the engineering machinery connection device in this embodiment is used to connect the first component and the second component of the engineering machinery. The engineering machinery connection device includes a connecting component 1, a base 2, and one or more locking components. The first component and the second component include any two components of the engineering machinery that need to be constantly connected and can be opened. For example, the first component is the working arm of an excavator, and the second component is the bucket, drill bit, or other working device of a multi-purpose excavator.

[0037] The connecting component 1 is used to connect to the first component. The connecting component 1 can be detachably connected to the first component or non-detachably connected. The detachable connection includes connection via connectors, such as bolts and nuts. In some embodiments, the connecting component 1 is non-detachably connected to the first component by welding or integral molding. The connecting component 1 is connected to the first component, which allows for convenient and quick connection or disconnection from the base 2.

[0038] The base 2 is used to connect with a second component, and the base 2 comprises a mounting portion 21 for mounting the connecting component 1. The base 2 is connected with the connecting component through the mounting portion 21, and in the embodiment shown in the figure, the mounting portion 21 is a mounting groove, and the connecting component is mounted in the mounting groove to be connected with the base 2. The base 2 is detachably connected with the second component or is non-detachably connected with the second component. The detachable connection includes connection through a connecting member, such as a bolt and nut. In other embodiments, the base 2 is non-detachably connected with the second component through welding or one-piece forming. After the second component is connected with the base 2, the second component can be quickly and conveniently connected with or detached from the first connecting portion with the connecting component. For example, in a multi-purpose excavator device, when the working arm needs to be replaced with different working devices, the base 2 on the working arm is connected with or detached from the connecting component of the different working devices such as a bucket or a drill, so that the working arm can be quickly and conveniently matched with or replaced with the different working devices.

[0039] The locking assembly comprises a locking cavity 3 arranged on the base 2, a locking block 4 rotatably arranged in the locking cavity 3 about a first axis, an elastic device 5 arranged between the locking block 4 and the base 2, and a driving member 6. The elastic device 5 provides an elastic force to make the locking block 4 have a movement tendency of rotating about the first axis to a locking direction and moving along the first axis to a first direction. The first axis is a virtual axis fixed relative to the base 2, that is, the locking block is rotatable about an axis fixed relative to the base 2. In the present application, the first direction is a straight line direction along the first axis, and two points are taken on the first axis, for example, a first point and a second point. The direction from the first point to the second point is the first direction, and the direction from the second point to the first point is the opposite direction of the first direction. The locking direction in the present application is a rotating direction. When the rotation of the locking block 4 is observed from one side of a rotating plane formed by the rotation of the locking block 4, the locking direction of the locking block 4 is counterclockwise or clockwise. The elastic force of the elastic device provides a torque to the locking block 4 to rotate to the locking direction and a driving force to the locking block 4 to move to the first direction.

[0040] The locking block 4 has a first angular position and a second angular position. In the first angular position, the locking block 4 locks the connecting component 1 located in the mounting portion 21, and the locking cavity 3 limits the movement of the locking block 4 to the direction opposite to the first direction. In the first angular position, the locking block 4 locks the connecting component 1, which means that the locking block 4 and the base cooperate to limit the movement of the connecting component 1 in at least one direction, for example, in the embodiment shown in the figure, the movement of the connecting component 1 in the direction of the arrow A is limited. Figure 5In the shown embodiment, the connecting part 1 is provided with a limiting member at both axial ends, after the connecting part 1 is installed on the mounting part of the base 2, the movement of the connecting part 1 along the axial direction is limited, but the movement of the connecting part 1 along the radial direction is limited and locked by the locking block 4 at the first angle position and the base 2. The locking block 4 at the first angle position is limited by the locking cavity to move in the direction opposite to the first direction, through the limitation, the locking block 4 can lock the connection between the connecting part installed on the mounting part of the base 2 and the base 2. In the second angle position, the locking block 4 can move in the direction opposite to the first direction along the axial line, the connecting part 1 can move in the direction opposite to the first direction by pushing the locking block 4 to overcome the elastic force of the elastic device 5 to enter or move out of the mounting part 21, after the connecting part 1 pushes the locking block 4 and enters the mounting part 21, the locking block 4 moves in the first direction, when the locking block 4 moves in the first direction for a certain distance, the movement of the connecting part 1 is limited, when the locking block 4 is at the first angle position, the locking block 4 cannot freely move in the direction opposite to the first direction, and the limitation of the movement of the connecting part 1 is locked. When the locking block 4 is at the second angle position, it can move in the direction opposite to the first direction by overcoming the elastic force of the elastic device 5 under the action of external force, that is, when the locking block 4 can move in the direction opposite to the first direction, the locking block 4 cannot effectively lock the connecting part installed on the mounting part, the connecting part installed on the mounting part can move in the direction opposite to the first direction by pushing the locking block 4 to overcome the elastic force of the elastic device 5 to move out of the mounting part 21, realizing the quick disassembly of the connecting part and the base 2, or entering the mounting part from the outside, realizing the quick connection of the connecting part and the base 2. The driving member 6 is used to drive the locking block 4 to rotate around the first axis in the direction opposite to the locking direction, so that the driving member can switch the locking block 4 from the first angle position to the second angle position, and when the driving member removes the driving of the locking block 4, the locking block 4 can switch from the second angle position to the first angle position under the elastic force of the elastic device. Therefore, by driving or removing the driving of the locking block by the driving member, the locking block 4 can switch between the first angle position and the second angle position under the action of the driving member 6 and the elastic device 5.

[0041] The connecting device of the engineering machinery of the embodiment can quickly switch between the locking state and the detachable connection state by switching the locking block 4 between the first angle position and the second angle position, when the locking block 4 is at the second angle position, the connecting part 1 can enter or move out of the mounting part 21 by pushing the locking block 4 to overcome the elastic force of the elastic device 5, realizing the quick connection or disassembly of the connecting device of the engineering machinery, when the locking block 4 is at the second angle position, the locking assembly can lock the connecting part 1 in the mounting part 21, realizing the reliable connection between the connecting part 1 and the base 2.

[0042] In some embodiments, as shown in Figures 1 to 7 the connecting component 1 comprises a connecting shaft, the mounting portion 21 comprises a U-shaped open slot, the connecting shaft is mounted in the U-shaped open slot, the locking block 4 in the first angle position extends into the U-shaped open slot and restricts the connecting shaft from leaving the U-shaped open slot in the radial direction of the connecting shaft from the side of the slot wall of the U-shaped open slot away from the connecting shaft. The connecting shaft enters the U-shaped open slot by pushing the locking block 4 to move in the direction opposite to the first direction against the elastic force of the elastic device during the mounting process, the locking block 4 does not block the connecting shaft from entering the U-shaped open slot, and then the connecting shaft enters the U-shaped open slot, the locking block 4 moves in the first direction under the action of the elastic force of the elastic device to restrict the connecting shaft from the side of the slot bottom of the U-shaped open slot away from the connecting shaft. In the embodiment as shown in Figure 5 the two ends of the connecting shaft in the axial direction also comprise two limiting blocks, the distance between the two limiting blocks is greater than the axial length of the U-shaped open slot, and the radial dimension of the two limiting blocks is greater than the radial dimension of the U-shaped open slot, so that after the connecting shaft enters the U-shaped open slot, the two limiting blocks restrict the connecting shaft from leaving the U-shaped open slot in the axial direction of the connecting shaft, and the locking block 4 restricts the connecting shaft from leaving the U-shaped open slot in the radial direction of the connecting shaft, so that the connecting shaft and the U-shaped open slot achieve reliable connection.

[0043] In some embodiments, the connecting device of the engineering machinery comprises two locking assemblies, and the locking directions of the locking blocks 4 of the two locking assemblies are opposite. The locking direction of the locking block 4 of the locking assembly is the direction of rotation of the locking block when switching from the second angle position to the first angle position, as shown in Figures 1 to 7 when observing the two locking assemblies from above or below the base 2, the locking direction of the locking block 4 of one of the locking assemblies is counterclockwise, and the locking direction of the locking block 4 of the other locking assembly is clockwise. When the connecting shaft is mounted in the U-shaped open slot, the engineering machinery may vibrate during work, such as rotation relative to its own axis or radial jump, and the rotation of the connecting shaft may drive a locking block in the first angle position to rotate to the second angle position. At this time, since the locking direction of the locking block of the other locking assembly is opposite to that of the locking block, the other locking block will not switch to the second angle position, and can stably lock the connecting shaft. When the connecting shaft no longer vibrates, the locking block switched to the second angle position will switch to the first angle position under the action of the elastic device, and the connecting device of the engineering machinery can ensure the reliable connection between the connecting shaft and the U-shaped open slot during work.

[0044] In some embodiments, in order to minimize the interference with the locking block even if vibration occurs after the connecting shaft is mounted into the U-shaped open slot, as shown in Figure 5 the extension direction of the axis of the connecting shaft after the connecting shaft is mounted in the U-shaped open slot is perpendicular to the first direction.

[0045] In some embodiments, such as Figures 1 to 8 As shown, the end of the locking block 4 that extends into the U-shaped opening groove includes a cam body. The cam body is formed by sweeping a planar shape along a sweeping line perpendicular to the planar shape. That is, the cam body is obtained by translating the planar shape along the sweeping line. The cross-sectional shape of the cam body is the same everywhere along the sweeping line, and it is always the shape of the planar shape. Figure 8 As shown, the cam body has a U-shaped cross-section and includes two parallel end planes 421 located at both ends along its extension direction. The top surface 422 of the cam body located downstream along the first direction is curved. Since the cam body is obtained by sweeping a planar shape, the shapes of the two end planes 421 of the cam body are also the shapes of this planar shape, which are planes. When the locking block 4 is in the first angle position, the end planes 421 of the cam body are parallel to the axis of the connecting shaft installed in the U-shaped opening slot. That is, the cam body facing the connecting shaft is a plane. At this time, when the connecting shaft vibrates such as radial runout and rotation, it is difficult for the connecting shaft to rotate or push the cam body facing itself with the end planes in the second direction. The cam body is less affected by the vibration of the connecting shaft during operation, making it more reliable and stable. When the locking block 4 is in the second angular position, the end plane 421 of the cam body is not parallel to the axis of the connecting shaft installed behind the U-shaped opening slot. That is, at least part of the curved top surface of the cam body will face the connecting shaft. When the connecting shaft moves out of the U-shaped opening slot, the connecting shaft can easily contact the top surface. Through the curved shape of the top surface, a pushing force can be effectively generated on the locking block 4 in the opposite direction to the first direction, making it easier and more effective to move the connecting shaft out of or into the U-shaped opening slot. In the embodiment shown in the figure, the locking block 4 can rotate to the second angular position after rotating 90 degrees around the first axis from the first angular position.

[0046] In some embodiments, such as Figures 1 to 5 and Figure 9 As shown, the driving component 6 includes a driving rod that can slide relative to the base 2. The locking cavities 3 of the two locking components are connected. When the driving rod slides between the locking blocks 4 of the two locking components, it can push the locking blocks 4 of the two locking components to switch from a first angular position to a second angular position. As shown, the driving rod is inserted between the two locking cavities 3 of the two locking components. The extension of the driving rod can push the locking blocks 4 to rotate towards the second angular position against the elastic force of the elastic device, thereby switching the locking blocks 4 to the second angular position. When the driving rod retracts, the two locking components return to the first angular position under the action of the elastic force of the elastic device. In some embodiments, the driving rod is connected to a telescopic cylinder such as a hydraulic cylinder. The extension and retraction of the telescopic cylinder drives the sliding of the driving rod on the base to drive the rotation of the locking blocks.

[0047] In some embodiments, such as Figure 6As shown, the locking cavity 3 comprises a first cavity 31 located upstream along the first direction, a second cavity 32 located downstream of the first cavity 31 and communicating with the first cavity 31, and a third cavity 33 communicating with the second cavity 32, the third cavity 33 comprising a through hole, the second cavity 32 has a size larger than that of the first cavity 31 along at least one direction perpendicular to the first direction, the locking block 4 comprises a first block 41 connected with the elastic device 5 and a second block 42 connected with the first block 41 along the first direction and located downstream of the first block 41, the second block 42 penetrates the through hole, when the locking block 4 is located at the first angular position, the first block 41 is located in the second cavity 32 and the cavity wall of the first cavity 31 faces the surface of the second cavity 32 to limit the movement of the first block 41 along the direction opposite to the first direction, when the locking block 4 is located at the second angular position, the first block 41 can be pushed into the first cavity 31 along the direction opposite to the first direction by directly pushing the second block 42 to overcome the elastic force of the elastic device 5. In the embodiment as shown in Figure 6 In the embodiment as shown, the first cavity is composed of a circular arc cavity and a long strip cavity, the second cavity is enlarged in size on the basis of the shape of the first cavity, so that the locking block can be accommodated by the second cavity when it is switched and rotated between the first angular position and the second angular position, and the third cavity is a cylindrical through hole. In the embodiment as shown in Figure 6 In the embodiment as shown, the first cavity is directly excavated downward on the upper plate body of the base until the lower surface of the second cavity is excavated to form the preliminary shape of the second cavity, the preliminary shape of the second cavity is the same as the first cavity, and then the second cavity is further enlarged around the preliminary shape to accommodate the rotation of the locking block.

[0048] In some embodiments, the engineering machinery connecting device further comprises a mounting shaft 7 fixedly connected with the base 2 and extending along the first direction, the elastic device 5 comprises a torsion spring arranged around the mounting shaft 7, the first block 41 is provided with a mounting hole 413, one end of the mounting shaft 7 is slidably inserted into the mounting hole 413, the first block 41 is located downstream of the torsion spring along the first direction and connected with the torsion spring, and the elastic force provided by the torsion spring makes the locking block 4 have a movement tendency to rotate around the first axis to the locking direction and a movement tendency to move along the first axis to the first direction. As shown in Figure 5 As shown, the base 2 comprises a main base body and a cover plate 22 located above the main base body, and one end of the mounting shaft 7 is fixedly connected with the cover plate 22. When the locking block 4 moves to the direction opposite to the first direction, the torsion spring is compressed along the axial direction of the mounting shaft 7, and the elastic force provided by the torsion spring makes the locking block 4 have a movement tendency to move along the first axis to the first direction.

[0049] In some embodiments, as shown in Figures 1 to 5 and Figure 8As shown, the first block 41 comprises a main block 411 provided with a mounting hole 413 and a protruding block 412 connected with the main block 411 and protruding radially relative to the main block 411, during the rotation of the locking block 4 from the first angle position to the second angle position, the locking block 4 is always located in the second cavity 32, the first cavity 31 comprises a main cavity surrounding the mounting shaft 7 and a protruding cavity connected with the main cavity and protruding radially relative to the main cavity, when the locking block 4 is located at the second angle position, the connecting component 1 can make the main block 411 enter the main cavity and the protruding block 412 enter the protruding cavity by directly pushing the second block 42 to overcome the elastic force of the elastic device 5. The protruding block is provided, and the driving rod pushes the protruding block through extension and retraction, so that the rotation of the locking block can be effectively pushed.

[0050] In some embodiments, the protruding block 412 comprises adjacent first and second surfaces 4121 and 4122, the base 2 is provided with an observation opening 9 for observation, when the locking block 4 is located at the second angle position, the protruding block 412 is located in the observation opening 9 and the first surface 4121 can be observed through the observation opening 9, the second surface 4122 is perpendicular to the observation surface of the observation opening 9, when the locking block 4 is located at the first angle position, the second surface 4122 can be observed through the observation opening 9, and the first surface 4121 is blocked by the line of sight of the second surface 4122. In some embodiments, the first and second surfaces 4121 and 4122 are coated with different colors. In this embodiment, the observation through the observation opening 9 is always performed in front of the observation opening 9. In this embodiment, when the locking block switches between the first angle position and the second angle position, different surfaces of the first and second surfaces 4121 and 4122 can be observed through the observation opening, so that the current position state of the locking block can be quickly understood.

[0051] In some embodiments, the first block 41 comprises two protruding blocks 412, and the first block 41 is a central symmetric structure.

[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application rather than limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A construction machine connection device for connecting a first component and a second component of a construction machine, characterized in that, The utility model relates to a connecting device, comprising: a connecting component for connecting with the first component; a base for connecting with the second component, comprising a mounting portion for mounting the connecting component; one or more locking assemblies, comprising a locking cavity provided on the base, a locking block rotatably mounted in the locking cavity about a first axis, an elastic device provided between the locking block and the base, and a driving member, the elastic device providing an elastic force to make the locking block have a movement tendency of rotating about the first axis to a locking direction and moving along the first axis to a first direction, the locking block having a first angular position and a second angular position; in the first angular position, the locking block locks the connecting component located in the mounting portion, the locking cavity limits the locking block from moving to a direction opposite to the first direction; in the second angular position, the locking block can move along the axis to a direction opposite to the first direction, the connecting component can enter or move out of the mounting portion by pushing the locking block to overcome the elastic force of the elastic device to move to a direction opposite to the first direction, after the connecting component pushes the locking block and enters the mounting portion, the locking block moves to the first direction; the driving member is used for driving the locking block to rotate about the first axis to a direction opposite to the locking direction, the locking block switches between the first angular position and the second angular position under the action of the driving member and the elastic device; wherein the first axis is a virtual axis fixed relative to the base, and the locking direction is the rotating direction of the locking block when switching from the second angular position to the first angular position.

2. The implement connection arrangement of claim 1, wherein, the connecting component comprises a connecting shaft, the mounting portion comprises a U-shaped open slot, after the connecting shaft is mounted in the U-shaped open slot, the locking block in the first angular position extends into the U-shaped open slot and limits the connecting shaft from moving away from the U-shaped open slot along the radial direction of the connecting shaft from the side of the slot wall of the U-shaped open slot away from the connecting shaft.

3. The implement connection arrangement of claim 2, wherein, the connecting device comprises two locking assemblies, the locking directions of the locking blocks of the two locking assemblies are opposite.

4. A connection arrangement for a working machine according to claim 2 or 3, characterized in that the extending direction of the axis of the connecting shaft after being mounted in the U-shaped open slot is perpendicular to the first direction.

5. A connection arrangement for a working machine according to claim 2 or 3, characterized in that the end of the locking block extending into the U-shaped open slot comprises a cam body, the cam body is formed by sweeping a planar figure along a sweeping straight line perpendicular to the planar figure, the cross section of the cam body is U-shaped, the cam body comprises two end planes located at both ends and parallel to each other along the extending direction of the cam body, the top plane of the cam body downstream along the first direction is a curved surface, when the locking block is in the first angular position, the end planes of the cam body are parallel to the axis of the connecting shaft mounted in the U-shaped open slot, when the locking block is in the second angular position, the end planes of the cam body are not parallel to the axis of the connecting shaft after being mounted in the U-shaped open slot.

6. The implement connection arrangement of claim 2 or 3, wherein, The driving member comprises a driving rod slidable relative to the base, the locking cavities of the two locking assemblies are communicated, and the driving rod is slidable to extend into the locking blocks of the two locking assemblies, and when the driving rod is in the locking blocks of the two locking assemblies, the locking blocks can be pushed to switch from the first angular position to the second angular position.

7. The implement connecting device of any of claims 1 to 3, wherein The locking cavity comprises a first cavity located upstream along the first direction, a second cavity located downstream of the first cavity and communicated with the first cavity, and a third cavity communicated with the second cavity, the third cavity comprises a through hole, the size of the second cavity is greater than the size of the first cavity along at least one direction perpendicular to the first direction, the locking block comprises a first block connected with the elastic device and a second block connected with the first block along the first direction and located downstream of the first block, the second block penetrates the through hole, when the locking block is located at the first angular position, the first block is located in the second cavity, and the cavity wall of the first cavity limits the first block to move in the direction opposite to the first direction by facing the surface of the second cavity, when the locking block is located at the second angular position, the connecting component can push the second block directly to overcome the elastic force of the elastic device to make the first block enter the first cavity in the direction opposite to the first direction.

8. The implement connection arrangement of claim 7, wherein, Further comprising a mounting shaft fixedly connected with the base and extending along the first direction, the elastic device comprises a torsion spring arranged around the mounting shaft, the first block is provided with a mounting hole, one end of the mounting shaft is slidably inserted into the mounting hole relative to the mounting hole, the first block is located downstream of the torsion spring and connected with the torsion spring along the first direction, and the elastic force provided by the torsion spring makes the locking block have a movement tendency to rotate around the first axis to the locking direction and a movement tendency to move along the first axis to the first direction.

9. The implement connection arrangement of claim 8, wherein, The first block comprises a main block provided with the mounting hole and a protruding block connected with the main block and protruding radially relative to the main block, during the rotation of the locking block from the first angular position to the second angular position, the locking block is always located in the second cavity, the first cavity comprises a main cavity around the mounting shaft and a protruding cavity communicated with the main cavity and protruding radially relative to the main cavity, when the locking block is located at the second angular position, the connecting component can push the second block directly to overcome the elastic force of the elastic device to make the main block enter the main cavity and make the protruding block enter the protruding cavity.

10. The implement connection arrangement of claim 9, wherein, The protruding block comprises adjacent first and second surfaces, the base is provided with an observation opening for observation, when the locking block is located at the second angular position, the protruding block is located in the observation opening and the first surface can be observed through the observation opening, the second surface is perpendicular to the observation surface of the observation opening, when the locking block is located at the first angular position, the second surface can be observed through the observation opening, and the first surface is blocked by the line of sight of the second surface.

11. The implement connection arrangement of claim 10, wherein, The first surface and the second surface are coated with different colors.

12. The implement connection arrangement of claim 9, wherein, The first block includes two of the protruding blocks, and the first block is a central symmetric structure.

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