阅读说明：本技术 作业臂支腿连接模块和工程机械 (Work arm supporting leg connecting module and engineering machinery ) 是由 陈军印 董鲁波 张勇 于 2021-08-26 设计创作，主要内容包括：本发明公开一种作业臂支腿连接模块和工程机械,作业臂支腿连接模块包括：支撑基座；回转支撑结构,包括第一回转部和第二回转部；作业臂；第一伸缩油缸,一端与作业臂铰接,另一端与第二回转部铰接；支腿结构,包括第一端均与支撑基座的铰接的第一支腿和第二支腿；第二伸缩油缸,两端分别与支撑基座和第一支腿铰接；第三伸缩油缸,两端分别与支撑基座和第二支腿铰接；液压回转体,第一回转体和第二回转体之间形成油腔；液压接头,与第二伸缩油缸、第三伸缩油缸和油腔连接；第一连接部,包括第一销孔和第一挡板的第一销轴；第二连接部,包括第二销孔和顶端设有第二挡板的第二销轴；第三连接部,包括第三销孔和顶端设有第三挡板的第三销轴。(The invention discloses an operation arm supporting leg connecting module and engineering machinery, wherein the operation arm supporting leg connecting module comprises: a support base; a swiveling support structure including a first swiveling portion and a second swiveling portion; a working arm; one end of the first telescopic oil cylinder is hinged with the operation arm, and the other end of the first telescopic oil cylinder is hinged with the second rotary part; the support leg structure comprises a first support leg and a second support leg, wherein the first end of the first support leg is hinged with the support base; two ends of the second telescopic oil cylinder are respectively hinged with the support base and the first supporting leg; two ends of the third telescopic oil cylinder are respectively hinged with the support base and the second supporting leg; the hydraulic revolving body, form the oil pocket between second revolving body and the first revolving body; the hydraulic joint is connected with the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cavity; the first connecting part comprises a first pin hole and a first pin shaft of the first baffle plate; the second connecting part comprises a second pin hole and a second pin shaft of which the top end is provided with a second baffle; and the third connecting part comprises a third pin hole and a third pin shaft of which the top end is provided with a third baffle.)

1. A work arm leg connection module for mounting to a frame of an engineering machine, comprising:

a support base;

the rotary supporting structure comprises a first rotary part fixedly connected with the supporting base and a second rotary part which is arranged above the first rotary part and can rotate relative to the first rotary part;

the working arm comprises a first end hinged with the second rotary part and a second end connected with a working device in an installing mode;

one end of the first telescopic oil cylinder is hinged with the operation arm, and the other end of the first telescopic oil cylinder is hinged with the second rotary part and is used for stretching to drive the operation arm to rotate relative to the second rotary part;

a leg structure for supporting the support base on the ground, comprising a first leg and a second leg, each having a first end hinged to the support base;

two ends of the second telescopic oil cylinder are respectively hinged with the support base and the first supporting leg and used for driving the first supporting leg to rotate relative to the support base;

two ends of the third telescopic oil cylinder are respectively hinged with the support base and the second supporting leg and used for driving the second supporting leg to rotate relative to the support base;

the hydraulic revolving body comprises a first revolving body fixedly connected with the supporting base and a second revolving body fixedly connected with the second revolving part, the first revolving body and the second revolving body can rotate relatively, an oil cavity is formed between the first revolving body and the second revolving body, and the oil cavity is connected with the first telescopic oil cylinder to supply oil to the first telescopic oil cylinder;

the hydraulic joint is fixedly connected with the first rotating part, connected with the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cavity and used for being connected with a joint of a hydraulic pipeline of the engineering machinery so as to supply oil to the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cavity;

the first connecting part is positioned at the left end of the support base and comprises a first pin hole fixedly arranged on the support base and a first pin shaft, the top end of the first pin shaft is provided with a first baffle plate with the diameter larger than that of the first pin hole, and the first pin shaft is used for being matched with the first pin hole and the first connecting pin hole of the frame;

the second connecting part is positioned at the right end of the support base and comprises a second pin hole fixedly arranged on the support base and a second pin shaft, the top end of the second pin shaft is provided with a second baffle plate with the diameter larger than that of the second pin hole, and the second pin shaft is used for being matched with the second pin hole and a second connecting pin hole of the frame;

and the third connecting part is positioned at the bottom end of the support base and comprises a third pin shaft fixedly arranged on the support base, wherein the diameter of the third pin shaft is larger than that of a third baffle plate of the third pin hole, and the third pin shaft is matched with the third pin hole and a third connecting pin hole of the frame.

2. The boom leg connecting module according to claim 1, wherein said second revolving body is a cylindrical revolving body fitted around an outer side of said first revolving body, said oil chamber is provided between an inner surface of a circumferential surface of said second revolving body and an outer surface of a circumferential surface of said first revolving body, and a connection port for connecting said oil chamber to said first telescopic cylinder is provided on a circumferential surface of said second revolving body.

3. The boom leg connection module of claim 1, further comprising a valve block electrical box disposed on the second swing portion, the valve block electrical box including an electrically controlled hydraulic valve for controlling a hydraulic oil path of the first telescopic cylinder, the support base further having an electrical connector for connecting to a connector of an electrical circuit of the construction machine, the electrical connector being electrically connected to the valve block electrical box.

4. The work arm leg connection module of claim 3, further comprising a rotary electrical interface having a rotor electrically connected to the valve block electrical enclosure and fixedly connected to the second swivel, and a stator electrically connected to the electrical connector and fixedly connected to the support base.

5. The boom leg attachment module of claim 1 wherein a first threaded portion is provided on a bottom portion of the third pin, the third attachment portion further comprising a bottom stop plate having a diameter greater than the third attachment pin hole, the bottom stop plate including a second threaded portion for threaded engagement with the first threaded portion.

6. The boom leg connection module according to any one of claims 1 to 5, wherein the support base includes a support disk-shaped body and an inclined support frame fixedly connected to a bottom of the support disk-shaped body, the first connection portion and the second connection portion are respectively provided at left and right ends of the support disk-shaped body, and the third connection portion is provided on the inclined support frame.

7. An engineering machine, characterized by, including frame, hydraulic line and the operation arm landing leg link module of any one of claims 1 to 6, be equipped with first connection pinhole, second connection pinhole and third connection pinhole on the frame, first round pin axle simultaneously with first pinhole and first connection pinhole cooperation, second round pin axle simultaneously with second pinhole and second connection pinhole cooperation, third round pin axle simultaneously with third pinhole and third connection pinhole cooperation, the joint of hydraulic line with hydraulic joint connects.

Technical Field

The invention relates to the field of engineering machinery, in particular to a working arm support leg connecting module and engineering machinery.

Background

At present, engineering mechanical equipment gradually plays a great role in some special operation occasions, such as tunnel obstacle clearing, mine roadway repair, earthquake breaking and dismantling rescue, military mine sweeping and explosion elimination and other occasions. On the basis of the traditional engineering mechanical technology, the structure and the performance are recombined, a plurality of special engineering mechanical equipment suitable for special working conditions are generated, such as tunnel obstacle clearing equipment, mining roadway repairing equipment, forcible entry rescue equipment, mine sweeping and explosion removing equipment and the like, in the special equipment, in order to meet the requirements of complex environment and multifunctional operation, the structural form of a multifunctional operation arm support is mostly adopted, and the modularized design technology is applied, so that the integral special operation requirement is met.

Disclosure of Invention

The invention aims to provide a working arm support leg connecting module which has multiple functions and can be quickly and effectively disassembled from and assembled to a frame of engineering machinery.

The invention discloses a working arm support leg connecting module in a first aspect, which is used for being installed on a frame of engineering machinery and comprises:

a support base;

the rotary supporting structure comprises a first rotary part fixedly connected with the supporting base and a second rotary part which is arranged above the first rotary part and can rotate relative to the first rotary part;

the working arm comprises a first end hinged with the second rotary part and a second end connected with a working device in an installing mode;

one end of the first telescopic oil cylinder is hinged with the operation arm, and the other end of the first telescopic oil cylinder is hinged with the second rotary part and is used for stretching to drive the operation arm to rotate relative to the second rotary part;

a leg structure for supporting the support base on the ground, comprising a first leg and a second leg, each having a first end hinged to the support base;

two ends of the second telescopic oil cylinder are respectively hinged with the support base and the first supporting leg and used for driving the first supporting leg to rotate relative to the support base;

two ends of the third telescopic oil cylinder are respectively hinged with the support base and the second supporting leg and used for driving the second supporting leg to rotate relative to the support base;

the hydraulic revolving body comprises a first revolving body fixedly connected with the supporting base and a second revolving body fixedly connected with the second revolving part, the first revolving body and the second revolving body can rotate relatively, an oil cavity is formed between the first revolving body and the second revolving body, and the oil cavity is connected with the first telescopic oil cylinder to supply oil to the first telescopic oil cylinder;

the hydraulic joint is fixedly connected with the first rotating part, connected with the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cavity and used for being connected with a joint of a hydraulic pipeline of the engineering machinery so as to supply oil to the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cavity;

the first connecting part is positioned at the left end of the support base and comprises a first pin hole fixedly arranged on the support base and a first pin shaft, the top end of the first pin shaft is provided with a first baffle plate with the diameter larger than that of the first pin hole, and the first pin shaft is used for being matched with the first pin hole and the first connecting pin hole of the frame;

the second connecting part is positioned at the right end of the support base and comprises a second pin hole fixedly arranged on the support base and a second pin shaft, the top end of the second pin shaft is provided with a second baffle plate with the diameter larger than that of the second pin hole, and the second pin shaft is used for being matched with the second pin hole and a second connecting pin hole of the frame;

and the third connecting part is positioned at the bottom end of the support base and comprises a third pin shaft fixedly arranged on the support base, wherein the diameter of the third pin shaft is larger than that of a third baffle plate of the third pin hole, and the third pin shaft is matched with the third pin hole and a third connecting pin hole of the frame.

In some embodiments, the second revolving body is a cylindrical revolving body sleeved outside the first revolving body, the oil chamber is arranged between the inner surface of the circumferential surface of the second revolving body and the outer surface of the circumferential surface of the first revolving body, and a connecting port for communicating the oil chamber with the first telescopic cylinder is arranged on the circumferential surface of the second revolving body.

In some embodiments, the hydraulic control system further comprises a valve group electrical box arranged on the second rotating portion, the valve group electrical box comprises an electrically controlled hydraulic valve for controlling a hydraulic oil path of the first telescopic oil cylinder, an electrical connector for connecting with a connector of an electrical circuit of the engineering machinery is further arranged on the support base, and the electrical connector is electrically connected with the valve group electrical box.

In some embodiments, the valve assembly further comprises a rotary electrical interface, a rotor of the rotary electrical interface is electrically connected with the valve set electrical box and fixedly connected with the second rotator, and a stator of the rotary electrical interface is electrically connected with the electrical connector and fixedly connected to the support base.

In some embodiments, the bottom of the third pin shaft is further provided with a first threaded portion, the third connecting portion further includes a bottom baffle plate having a diameter larger than that of the third connecting pin hole, and the bottom baffle plate includes a second threaded portion for being in threaded fit with the first threaded portion.

In some embodiments, the support base includes a support disk-shaped body and an inclined support frame fixedly connected to the bottom of the support disk-shaped body, the first connection portion and the second connection portion are respectively disposed at the left end and the right end of the support disk-shaped body, and the third connection portion is disposed on the inclined support frame.

The invention discloses engineering machinery in a second aspect, which comprises a frame, a hydraulic pipeline and any one of the working arm support leg connecting modules, wherein the frame is provided with a first connecting pin hole, a second connecting pin hole and a third connecting pin hole, a first pin shaft is matched with the first pin hole and the first connecting pin hole at the same time, a second pin shaft is matched with the second pin hole and the second connecting pin hole at the same time, a third pin shaft is matched with the third pin hole and the third connecting pin hole at the same time, and a joint of the hydraulic pipeline is connected with the hydraulic joint.

According to the working arm support leg connecting module provided by the invention, through the arrangement of the structures such as the rotary supporting structure, the hydraulic rotary body, the working arm and the support leg structure, when the working arm is installed on an engineering machine to work, the working arm can swing and can rotate on a rotary plane at the same time, the engineering operation can be carried out with multiple degrees of freedom, and meanwhile, the support leg structure can flexibly swing and expand to support, so that the working process is more stable and reliable. In addition, the first connecting portion, the second connecting portion and the third connecting portion which are provided with the pin shafts, the pin holes and the baffle and are distributed in a triangular shape are arranged, so that the first connecting portion, the second connecting portion and the third connecting portion can be quickly and reliably disassembled and assembled with the pin holes of the frame of the engineering machinery, the disassembling and assembling are convenient, and the work is reliable.

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 without limiting the invention. In the drawings:

fig. 1 is a schematic structural view of a boom leg connecting module according to an embodiment of the present invention;

FIG. 2 is an exploded view of the boom leg attachment module shown in FIG. 1;

FIG. 3 is a schematic structural view of the support base shown in FIG. 1;

FIG. 4 is a schematic view of an exploded structure of the support base shown in FIG. 3;

FIG. 5 is a schematic view of the supporting plate of the support base shown in FIG. 4;

FIG. 6 is a schematic view of the inclined support structure of the support base shown in FIG. 4;

fig. 7 is a schematic structural diagram illustrating a process of mounting a work boom leg connecting module and a frame of an engineering machine according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of the work arm leg connection module shown in fig. 7 and the frame of the construction machine after being mounted.

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.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated 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 … …" can include both an orientation 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.

As shown in fig. 1 to 8, the work arm leg connection module of the present embodiment is used for being mounted on a frame 100 of a construction machine, and includes a support base 1, a rotation support structure 2, a work arm 3, a first telescopic cylinder 71, a leg structure 5, a second telescopic cylinder 72, a third telescopic cylinder 73, a hydraulic rotation body 6, a hydraulic joint, a first connection portion 81, a second connection portion 82, and a third connection portion 83. In the present application, the left and right are referred to an operator who is in an extending direction from the front of the frame 100 toward the work arm when the work arm leg support connection module is mounted on the frame 100 of the construction machine and works.

The support base 1 is used for mounting a plurality of components such as a slewing support structure 2 and a leg structure 5.

The rotary support structure 2 comprises a first rotary part 21 fixedly connected with the support base 1 and a second rotary part 22 which is arranged above the first rotary part 21 and can rotate relative to the first rotary part 21. The revolving support structure 2 is used to drive the second revolving portion 22 to rotate relative to the first revolving portion 21, so that the component mounted to the second revolving portion 22 can follow the rotation, with a degree of freedom of revolution. In some embodiments, the slewing support structure 2 comprises a speed reducer and a slewing motor, and in other embodiments, the slewing support structure 2 may also comprise a speed reducer and an electric motor.

As shown in fig. 1, the work jib 3 includes a first end hinged to the second swing portion 22 and a second end to which the working device 4 is attached. The working arm 3 can rotate relative to the second revolving portion 22 by the hinge joint of the first end and the second revolving portion 22, so that the working arm 3 can rotate around the first revolving portion 21 under the driving of the second revolving portion 22 and can rotate relative to the second revolving portion 22 by the hinge joint.

As shown in fig. 1 and 2, one end of the first telescopic cylinder 71 is hinged to the working arm 3, the other end of the first telescopic cylinder 71 is hinged to the second revolving part 22, and the first telescopic cylinder 71 is used for telescoping to drive the working arm 3 to rotate relative to the second revolving part 22; in the embodiment shown in the figure, two first telescopic cylinders 71 are included, arranged in parallel. In the embodiment shown in the figures, the work jib 3 comprises an articulated boom and a boom, the boom being articulated with the working device 4, a boom cylinder 74 being arranged between the boom and the boom, and a rotating bucket cylinder 75 being arranged between the working device and the boom.

The leg structure 5 is used for supporting the support base 1 on the ground, the leg structure 5 comprises a first leg 51 and a second leg 52, the first ends of which are hinged with the support base 1; two ends of the second telescopic oil cylinder 72 are respectively hinged with the support base 1 and the first supporting leg 51 and used for driving the first supporting leg 51 to rotate relative to the support base 1; two ends of the third telescopic cylinder 73 are respectively hinged with the support base 1 and the second supporting leg 52, and are used for driving the second supporting leg 52 to rotate relative to the support base 1. The second and third telescopic cylinders 72, 73 can respectively drive the first and second support legs 51, 52 to rotate to contact with the ground or lift from the ground to separate from the ground, so that the support leg structure 5 can be switched between a supporting working state and a non-supporting state. The supporting leg structure 5 is arranged, so that the working arm supporting leg connecting module can be more stable and reliable in working.

As shown in fig. 1 and 2, the hydraulic rotation body 6 includes a first rotation body 61 fixedly connected to the support base 1 and a cylindrical second rotation body 62 fixedly connected to the second rotation body 22, the first rotation body 61 and the second rotation body 62 being relatively rotatable with an oil chamber formed therebetween, the oil chamber being connected to a first telescopic cylinder 71 for supplying oil thereto.

The hydraulic joint is arranged on the support base 1 and fixedly connected with the first rotary part 21, the hydraulic joint is connected with the second telescopic oil cylinder 72, the third telescopic oil cylinder 73 and the oil cavity, and the hydraulic joint is used for being connected with a joint of a hydraulic pipeline of the engineering machinery so as to supply oil to the second telescopic oil cylinder 72, the third telescopic oil cylinder 73 and the oil cavity. The setting of hydraulic pressure joint can be conveniently connected with engineering machine's hydraulic line fast, the hydraulic pressure joint that sets up on supporting pedestal 1 is connected with the oil pocket of hydraulic pressure solid of revolution 6, thereby engineering machine's hydraulic line accessible hydraulic pressure joint sends hydraulic oil into the oil pocket of hydraulic pressure solid of revolution 6, transmit hydraulic oil to the hydraulic pressure components and parts that are located on second gyration portion 22 through hydraulic pressure solid of revolution 6, in the embodiment as shown in the figure, because hydraulic pressure joint and second telescopic cylinder, third telescopic cylinder all is connected with first gyration portion, thereby hydraulic pressure that hydraulic pressure joint transmitted to second telescopic cylinder and third telescopic cylinder can not pass through hydraulic pressure solid of revolution 6, can set up the pipeline alone and connect. In the embodiment shown in fig. 3 and 4, the hydraulic joints comprise a first hydraulic joint 92 and a second hydraulic joint 93, and the first hydraulic joint 92 and the second hydraulic joint 93 may be provided as a male hydraulic joint, one being male, and the other being female.

As shown in the figure, the first connecting portion 81 is located at the left end of the support base 1, the first connecting portion 81 includes a first pin hole 811 fixedly disposed on the support base 1 and a first pin 812 having a top end provided with a first baffle 813 with a diameter larger than the first pin hole 811, and the first pin 812 is configured to be simultaneously matched with the first pin hole 811 and the first connecting pin hole 110 of the frame 100. The first baffle 813 may be integrally formed with the first pin 812, or may be detachably connected to the first pin 812 by a screw connection or the like. The first blocking plate 813 is used for limiting the first pin 812 from falling down the first pin hole 811 when the first pin is inserted into the first pin hole 811. As shown in fig. 8, when the boom leg connecting module is connected to the frame 100, the first pin 812 is inserted into the first pin hole 811 from above, so that the first pin hole 811 and the first connecting pin hole 110 can be simultaneously connected conveniently, quickly and reliably.

The second connecting portion 82 is located at the right end of the support base 1, and includes a second pin hole 821 fixedly arranged on the support base 1 and a second pin 822 having a top end provided with a second baffle 823 with a diameter larger than that of the second pin hole 821, and the second pin 822 is used for being matched with the second pin hole 821 and the second connecting pin hole 120 of the frame 100. The second shield 823 may be integrally formed with the second pin 822, or may be detachably connected to the second pin 822 by a screw connection or the like. The second stopper 823 is configured to restrict the second pin 822 from dropping below the second pin hole 821 when the second pin 822 is inserted into the second pin hole 821. As shown in fig. 8, when the boom leg connecting module is connected to the frame 100, the second pin 822 is inserted into the second pin hole 811 from above, so that the second pin hole 821 and the second connecting pin hole 120 can be connected to each other at the same time, conveniently, quickly and reliably.

The third connecting portion 83 is located at the bottom end of the support base 1, the third connecting portion 83 includes a third pin hole 831 fixedly disposed on the support base 1 and a third pin 832 having a top end provided with a third blocking plate 833 with a diameter larger than that of the third pin hole 831, and the third pin 832 is used for simultaneously matching with the third pin hole 831 and the third connecting pin hole 130 of the frame 100. The third blocking plate 833 can be integrally formed with the third pin 832, or can be detachably connected to the third pin 832 by a screw connection or the like. The third blocking plate 833 is used to limit the third pin 832 from falling down the third pin hole 831 when the third pin 832 is inserted into the third pin hole 831. In this embodiment, the first connection portion 81 and the second connection portion 82 can achieve left and right quick connection between the work arm leg connection module and the frame 100, the third connection portion 83 can achieve connection between the work arm leg connection module and the bottom of the frame 100, the three connection portions form a triangular shape, and reliable connection between the work arm leg connection module and the frame 100 can be achieved. Meanwhile, due to the arrangement of the pin shaft and the baffle, the quick connection between the operation arm support leg connecting module and the frame 100 can be realized, so that the operation arm support leg connecting module and the frame 100 can be quickly and reliably disassembled and assembled.

The working arm support leg connecting module of the embodiment has the advantages that by the arrangement of the structures such as the rotary supporting structure 2, the hydraulic rotary body 6, the working arm 3 and the support leg structure 5, when the working arm is installed on an engineering machine to work, the working arm 3 can swing and rotate on a rotary plane at the same time, engineering operation can be carried out with multiple degrees of freedom, meanwhile, the support leg structure 5 can swing and expand flexibly to support, and the working process is more stable and reliable. In addition, the first connecting portion 81, the second connecting portion 82 and the third connecting portion 83 which are provided with the pin shafts, the pin holes and the baffle plates and form triangular distribution can be quickly and reliably assembled and disassembled with the pin holes of the frame 100 of the engineering machinery, and the assembling and disassembling are convenient and the work is reliable.

In some embodiments, as shown in fig. 2, the second rotation body 62 is a cylindrical rotation body that is fitted around the outer side of the first rotation body 61, an oil chamber is provided between the inner surface of the circumferential surface of the second rotation body 62 and the outer surface of the circumferential surface of the first rotation body 61, and a connection port that communicates the oil chamber with the first telescopic cylinder 71 is provided on the circumferential surface of the second rotation body 62. That is, the second rotator 62 and the first rotator 61 form a sleeve structure, an annular oil chamber is formed between the second rotator 62 and the first rotator 61, and the second rotator 62 and the first rotator 61 are in sliding seal. This arrangement can easily and reliably realize the function of transmitting hydraulic oil between the two relatively rotating members of the hydraulic rotary body 6.

In some embodiments, the boom leg connecting module further includes a valve group electrical box 91 disposed on the second rotating portion 22, the valve group electrical box 91 includes an electrically controlled hydraulic valve for controlling a hydraulic oil path of the first telescopic cylinder 71, in the embodiment including the arm cylinder 74 and the fighting cylinder 75, the electrically controlled hydraulic valve includes a hydraulic multi-way valve simultaneously connected to the first telescopic cylinder 71, the arm cylinder 74 and the fighting cylinder 75, and the valve group electrical box further includes a multi-way electrical box connected to the hydraulic valve, and the electrical box can also supply power to some electrical components on the boom. The support base 1 is further provided with an electrical connector 94 for connecting with a connector of an electric circuit of the construction machine, and the electrical connector 94 is electrically connected with the valve block electrical box 91. Not only integrated hydraulic pressure on the support base 1 of this embodiment connects, still integrated electrical joint, electrical joint and hydraulic pressure connect can adopt some universal joint, and the operation arm landing leg link module integrated level of this embodiment is high, and the commonality is good.

In some embodiments, the boom leg connection module further comprises a rotary electrical interface, a rotor of the rotary electrical interface is electrically connected with the valve set electrical box 91 and fixedly connected with the second rotator 62, and a stator of the rotary electrical interface is electrically connected with the electrical connector 94 and fixedly connected to the support base 1. The rotary electrical interface includes brushes, and this embodiment allows for the conduction and transmission of electrical signals between the relatively rotating components.

In some embodiments, as shown in fig. 3, the bottom of the third pin 832 is further provided with a first threaded portion, the third connecting portion 83 further comprises a bottom baffle 834 having a diameter larger than the third connecting pin hole 130, and the bottom baffle 834 comprises a second threaded portion for threadedly engaging with the first threaded portion. As shown in the figure, a threaded hole may be formed at the bottom of the third pin 832, a threaded shaft that is engaged with the threaded hole may be disposed on the bottom baffle 834, the bottom baffle 834 may be disposed to prevent the third pin from being separated from the third connecting pin hole 130 of the frame 100 when the construction machine is in operation, and the third pin 832 may be stably and reliably connected to the third pin hole 831 and the third connecting pin hole 130 under the combined action of the third baffle and the bottom baffle 834.

In some embodiments, as shown in fig. 1 to 8, the support base 1 includes a support disk body 11 and an inclined support frame 12 fixedly connected to the bottom of the support disk body 11, a first connection portion 81 and a second connection portion 82 are respectively provided at the left end and the right end of the support disk body 11, and a third connection portion 83 is provided on the inclined support frame 12. The inclined support frame 12 and the support plate body 11 form a triangular connection, so that when the operation arm support leg connection module is connected with the frame 100, the operation arm support leg connection module can be stably and reliably supported, and the operation arm support leg connection module is firmer and more reliable.

In some embodiments, as shown in fig. 8, an engineering machine is further disclosed, where the engineering machine includes a frame 100, a hydraulic pipeline, and any one of the boom leg connecting modules, the frame 100 is provided with a first connecting pin hole 110, a second connecting pin hole 120, and a third connecting pin hole 130, the first pin 812 is simultaneously matched with the first pin hole 811 and the first connecting pin hole 110, the second pin 822 is simultaneously matched with the second pin hole 821 and the second connecting pin hole 120, the third pin 832 is simultaneously matched with the third pin hole 831 and the third connecting pin hole 130, and a joint of the hydraulic pipeline is connected with a hydraulic joint.

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 to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; 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.