CN210480689U - Auxiliary arm assembly and crane - Google Patents

Abstract

The application relates to heavy machinery technical field especially relates to an fly jib subassembly and hoist, includes: the auxiliary arm is provided with a first connecting end, the boom raising guide wheel is installed at the first connecting end, and the first connecting end is used for being connected with the main arm. This application provides an auxiliary arm subassembly and hoist to present hoist jib needs operate the dolly, and the initiative is pull, and the more loaded down with trivial details problem of operation.

Description

Auxiliary arm assembly and crane

Technical Field

The application relates to the technical field of heavy machinery, in particular to an auxiliary arm assembly and a crane.

Background

At present, most of crawler cranes start the auxiliary jib by connecting the auxiliary jib with the main jib, lifting the main jib by a pulling plate and a steel cable, and dragging the auxiliary jib to move along with the main jib by a trolley, so as to achieve the effect of starting the jib. The lifting arm mode needs to operate the trolley, actively pulls the trolley and is complex to operate.

SUMMERY OF THE UTILITY MODEL

This application provides an auxiliary arm subassembly and hoist to present hoist jib needs operate the dolly, and the initiative is pull, and the more loaded down with trivial details problem of operation.

In order to achieve the purpose, the following technical scheme is adopted in the application:

one aspect of the present application provides an auxiliary arm assembly comprising: the auxiliary arm is provided with a first connecting end, the boom raising guide wheel is installed at the first connecting end, and the first connecting end is used for connecting the main arm.

Optionally, the boom guide wheel includes a connecting member and a wheel body mounted on the connecting member, the connecting member is hinged to the first connecting end and forms a hinge point, so that the boom guide wheel can swing from one side of the secondary arm to the other side in a first direction, the first direction is perpendicular to the length direction of the secondary arm and is in the same plane as the rolling direction of the boom guide wheel.

The technical scheme has the beneficial effects that: when the main arm and the auxiliary arm are folded, the arm-raising guide wheel can be positioned on one side of the auxiliary arm, which is far away from the main arm, and after the main arm and the auxiliary arm are unfolded, the arm-raising guide wheel can be positioned on one side of the auxiliary arm, which faces the ground, so that the auxiliary arm and the ground are always isolated by the arm-raising guide wheel, and the possibility of collision between the auxiliary arm and the ground is reduced; the lifting arm guide wheel is reversed from one side of the auxiliary arm to the other side, so that the lifting arm guide wheel is separated from the ground when the auxiliary arm is lifted to be in a vertical position, and then the lifting arm guide wheel is moved from one side of the auxiliary arm to the other side.

Optionally, a limiting portion is formed on each of two sides of the first connecting end in the first direction, and the limiting portion is used for being matched with the connecting piece, so that a connecting line between the center of the wheel body and the hinge point intersects with the auxiliary arm and forms an obtuse angle with the hinge point as an end point.

The technical scheme has the beneficial effects that: guaranteed that the fly jib when being in vertical state or being close vertical state to and the fly jib is in folding or when expanding the state, the fly jib all is difficult to with ground direct contact, moreover, through the position relation between wheel body and the fly jib, can make the diameter of wheel body less relatively, reduced the weight of rising arm leading wheel, and then reduced the cost and the dismouting degree of difficulty.

Optionally, the connecting piece include with spacing portion complex gag lever post with articulate in the connecting rod of pin joint, the gag lever post with be connected with the bracing piece between the connecting rod.

The technical scheme has the beneficial effects that: the support rod, the limiting rod and the connecting rod are designed into rod pieces, so that the support effect can be achieved, the used materials are less, the weight is lighter, and the cost and the disassembly and assembly difficulty are further reduced.

Optionally, the limiting part is detachably connected with the connecting piece.

The technical scheme has the beneficial effects that: therefore, in the arm lifting process, the position relation between the arm lifting guide wheel and the auxiliary arm is relatively fixed, and the stability and the safety in the arm lifting process are improved. Of course, the limit part and the connecting piece can be only abutted.

Optionally, the limiting part is detachably connected with the connecting piece through a pin shaft.

The technical scheme has the beneficial effects that: the first connecting part and the connecting part can be disassembled and assembled by plugging and unplugging the pin shaft, so that the working efficiency is improved.

Optionally, the connecting member is detachably connected to the first connecting end. This has made things convenient for the dismouting change to the leading wheel of the arm that rises, when the leading wheel of the arm that rises damages, or needs the leading wheel of the arm that rises of different specifications, can be in time more smooth.

Optionally, the boom raising guide wheel comprises a pulley and an axle mounted to the wheel body, the pulley being mounted to the axle.

The technical scheme has the beneficial effects that: thus, the steel wire rope passes around the pulley, and the hoisting can be realized.

Another aspect of the application provides a crane comprising the fly jib assembly described above.

Optionally, the jib assembly and the crane provided in the embodiments of the present application include a crane body, and a main jib and a main luffing mechanism connected to the crane body, where the jib has a second connection end, the first connection end and the second connection end are two ends of the jib in a first direction, the second connection end is hinged to the main jib, and the main luffing mechanism is connected to the main jib to drive the main jib and the jib to luff.

The technical scheme has the beneficial effects that: this makes the construction and operation of the crane for lifting the arm relatively simple.

Additional features of the present application and advantages thereof will be set forth in the description which follows, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.

FIG. 1 is a schematic structural diagram of one embodiment of a crane provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another embodiment of a crane provided in the embodiments of the present application;

FIG. 3 is a schematic partial structural view of an embodiment of an auxiliary arm assembly provided by an embodiment of the present application;

FIG. 4 is a schematic partial structural view of another embodiment of a secondary arm assembly provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic partial structural view of yet another embodiment of an auxiliary arm assembly according to an embodiment of the present disclosure;

FIG. 6 is a partial schematic structural view of an embodiment of a boom guide wheel provided in an embodiment of the present application;

fig. 7 is a cross-sectional view taken at a-a in fig. 6.

Reference numerals:

1-auxiliary amplitude-variable winding; 2-a fuselage;

3-main arm lower arm section; 4-lifting arm guide wheel;

5-main amplitude varying mechanism; 6-auxiliary amplitude-variable fixed pulley block;

7-a main arm; 8-auxiliary amplitude-variable steel wire rope;

9-auxiliary amplitude variable pulley block; 10-main arm side pull rope;

11-an auxiliary arm; 12-main and auxiliary arm connecting joints;

13-mast; 14-auxiliary arm side pull rope;

15-a guide pulley block; 41-a connecting rod;

42-a limiting rod; 43-wheel body;

44-an axle; 45-a pulley;

46-a support bar; 111-a limiting part.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. 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 application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to 7, one aspect of the present application provides an auxiliary arm assembly including: the auxiliary arm 11 and the lifting arm guide wheel 4 are used for being in contact with the ground, the auxiliary arm 11 is provided with a first connecting end, the lifting arm guide wheel 4 is installed at the first connecting end, and the first connecting end is used for being connected with the main arm 7.

At present, in an external folding crane, after an auxiliary boom 11 and a main boom 7 are basically connected firstly, the main boom 7 is lifted by a pulling plate and a steel cable, the auxiliary boom 11 is pulled by a trolley to move along with the main boom 7, and by adopting the auxiliary boom assembly provided by the embodiment of the application, when the crane is lifted, the main boom 7 is lifted by a main amplitude transformer, the main boom 7 drives the auxiliary boom 11 to lift, in the moving process of the auxiliary boom 11, the guide wheel 4 is contacted with the ground to guide, the trolley is not required to pull the auxiliary boom 11, and the complex work caused by the active traction of the trolley is avoided.

Naturally, the auxiliary jib assembly provided by the embodiment of the application is also applicable to an internal folding crane, at present, the auxiliary jib 11 is folded below the main jib 7 of the internal folding crane, the two arms are connected through a pin shaft, the main jib 7 and the auxiliary jib 11 are fixed together to prevent the auxiliary jib 11 from colliding with the ground in the jib lifting process, the main jib 7 is lifted by a pulling plate and a rope, the main jib 7 and the auxiliary jib 11 are fixed together in the jib lifting mode, the main jib 7 and the auxiliary jib 11 are separated after the jib lifting is completed, and the operation is relatively troublesome, but by adopting the auxiliary jib assembly provided by the embodiment of the application, the main jib 7 and the auxiliary jib 11 do not need to be fixed together in the jib lifting process, the jib lifting guide wheel 4 is used for contacting with the ground, the possibility of collision between the auxiliary jib 11 and the ground is avoided, and the jib lifting operation is relatively simple without fixing the main jib 7 and the auxiliary jib 11 together.

Alternatively, the boom guide wheel 4 includes a link hinged to the first link end and forming a hinge point so that the boom guide wheel 4 can swing from one side to the other side of the sub-arm 11 in a first direction perpendicular to the length direction of the sub-arm 11 and in the same plane as the rolling direction of the boom guide wheel 4, and a wheel body 43 mounted to the link. When the main arm 7 and the auxiliary arm 11 are folded, the arm-raising guide wheel 4 can be positioned on one side of the auxiliary arm 11, which is far away from the main arm 7, and after the main arm 7 and the auxiliary arm 11 are unfolded, the arm-raising guide wheel 4 can be positioned on one side of the auxiliary arm 11, which faces the ground, so that the auxiliary arm 11 is always isolated from the ground by the arm-raising guide wheel 4, and the possibility of collision between the auxiliary arm 11 and the ground is reduced; the boom guide wheel 4 is reversed from one side of the fly jib 11 to the other side, so that the boom guide wheel 4 can be separated from the ground when the fly jib 11 is lifted to be in a vertical position, and then the boom guide wheel 4 is moved from one side of the fly jib 11 to the other side. Of course, if the wheel body 43 has a large diameter, the boom raising guide wheel 4 may be fixed to the sub boom 11, so that the sub boom 11 is difficult to directly contact the ground regardless of the relative position between the main boom 7 and the sub boom 11.

Optionally, a limiting portion 111 is formed on each side of the first connecting end in the first direction, and the limiting portion 111 is used for cooperating with the connecting piece, so that a connecting line between the center of the wheel body 43 and the hinge point intersects with the sub-arm 11 and forms an obtuse angle with the hinge point as an end point. This ensures that the sub-arm 11 is difficult to directly contact with the ground when the sub-arm 11 is in a vertical state or a state close to the vertical state, and when the sub-arm 11 is in a folded or unfolded state, and the diameter of the wheel body 43 can be relatively small through the position relationship between the wheel body 43 and the sub-arm 11, thereby reducing the weight of the boom raising guide wheel 4, and further reducing the cost and the difficulty of disassembly and assembly.

Optionally, the connecting member includes a limiting rod 42 engaged with the limiting portion 111 and a connecting rod 41 hinged to the hinge point, and a supporting rod 46 is connected between the limiting rod 42 and the connecting rod 41. The supporting rod 46, the limiting rod 42 and the connecting rod 41 are designed into rod pieces, so that the supporting effect can be achieved, the used materials are less, the weight is lighter, and the cost and the dismounting difficulty are further reduced.

Optionally, the position-limiting part 111 is detachably connected with the connecting piece. This makes the position relation between the boom raising guide wheel 4 and the auxiliary boom 11 relatively fixed during the boom raising process, and improves the stability and safety of the boom raising process. Of course, the stopper 111 and the connector may be simply abutted.

Optionally, the limiting part 111 and the connecting member are detachably connected by a pin. The first connecting part and the connecting part can be disassembled and assembled by plugging and unplugging the pin shaft, so that the working efficiency is improved.

Optionally, the connector is removably connected to the first connection end. This has made things convenient for the dismouting change to the leading wheel of the arm 4, when the leading wheel of the arm 4 damages, or needs the leading wheel of the arm 4 of different specifications, can in time change.

Alternatively, the boom guide wheel 4 includes a pulley 45 and an axle 44 mounted to the wheel body 43, the pulley 45 being mounted on the axle 44. Thus, the wire rope passes around the pulley 45, and the hoisting can be realized.

Another aspect of the application provides a crane comprising the fly jib assembly described above.

According to the crane provided by the embodiment of the application, the auxiliary arm assembly provided by the embodiment of the application is adopted, when the outer folding crane lifts the arm, the main arm 7 is lifted through the main amplitude transformer, the main arm 7 drives the auxiliary arm 11 to lift the arm, and in the motion process of the auxiliary arm 11, the guide wheel 4 is in contact with the ground for guiding without pulling the auxiliary arm 11 through a trolley, so that the complex work caused by the active traction of the operating trolley is avoided; when the inner folding crane lifts the boom, the main boom 7 and the auxiliary boom 11 do not need to be fixed together, the boom lifting guide wheel 4 is used for contacting the ground, the possibility of collision between the auxiliary boom 11 and the ground is further avoided, the main boom 7 and the auxiliary boom 11 do not need to be fixed together, and the boom lifting operation is relatively simple.

Optionally, the crane provided in the embodiment of the present application includes a main jib 7 connected to the main jib 2, and a main luffing mechanism 5, where the sub-jib 11 has a second connecting end, the first connecting end and the second connecting end are two ends of the sub-jib 11 in the first direction, the second connecting end is hinged to the main jib 7, and the main luffing mechanism 5 is connected to the main jib 7 to drive the main jib 7 and the sub-jib 11 to luff. This makes the construction and operation of the crane for lifting the arm relatively simple.

In the embodiment of the application, the main arm comprises a main arm lower joint arm 3, a main arm 7, a main and auxiliary arm connecting joint 12 and a guide pulley block 15. The lower arm 3 is connected with the body 2 of the crane to form a supporting point on the body 2. The main amplitude-changing mechanism 5 is hinged at the rear part of the machine body 2, and the main amplitude-changing mechanism 5 is hinged with a main and auxiliary arm connecting joint 12. The auxiliary amplitude variation mechanism comprises an auxiliary amplitude variation fixed pulley block 6, an auxiliary amplitude variation steel wire rope 8, an auxiliary amplitude variation movable pulley block 9 and a main arm side pull rope 10. The auxiliary amplitude-variable fixed pulley block 6 is hinged at the bottom of the main arm 7, the auxiliary amplitude-variable movable pulley block is connected with an auxiliary amplitude-variable movable pulley block 9 through an auxiliary amplitude-variable steel wire rope 8, and the auxiliary amplitude-variable movable pulley block 9 can slide to be far away from or close to the auxiliary amplitude-variable fixed pulley block 6. The auxiliary amplitude-variable movable pulley block 9 is connected with one end of a main arm side pull rope 10, and the main arm side pull rope 10 bypasses a guide pulley block 15 to be connected with a back hinge point of a mast 13. The guide pulley block 15 is used for increasing the force arm of the pulling force of the main arm side pulling rope 10 on the mast 13. The mast 13 is hinged with a hinge point on the main and auxiliary arm connecting joint 12, a second connecting end of the auxiliary arm 11 is hinged with a lower hinge point of the main and auxiliary arm connecting joint 12, and a first connecting end of the auxiliary arm 11 is connected with a front hinge point of the mast 13 through an auxiliary arm side pull rope 14; the jib-raising guide wheel 4 is connected with an auxiliary jib 11 through a pin shaft, and the auxiliary amplitude-variable winch 1 is arranged in the figure 1.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An auxiliary arm assembly, comprising: the auxiliary arm (11) is provided with a first connecting end, the boom raising guide wheel (4) is mounted at the first connecting end, and the first connecting end is used for connecting the main arm (7).

2. The secondary arm assembly according to claim 1, characterized in that the boom guide wheel (4) comprises a connecting piece and a wheel body (43) mounted to the connecting piece, the connecting piece being hinged with the first connecting end and forming a hinge point to enable the boom guide wheel (4) to swing from one side of the secondary arm (11) to the other in a first direction, the first direction being perpendicular to the length direction of the secondary arm (11) and lying in the same plane as the rolling direction of the boom guide wheel (4).

3. The sub-arm assembly as claimed in claim 2, wherein a limit portion (111) is formed at both sides of the first connecting end in the first direction, the limit portion (111) is used to cooperate with the connecting piece, so that a line connecting the center of the wheel body (43) and the hinge point intersects the sub-arm (11) and forms an obtuse angle with the hinge point as an end point.

4. The secondary arm assembly according to claim 3, wherein the connecting member comprises a limiting rod (42) engaged with the limiting portion (111) and a connecting rod (41) hinged to the hinge point, and a support rod (46) is connected between the limiting rod (42) and the connecting rod (41).

5. An auxiliary arm assembly according to claim 3, characterized in that the limiting portion (111) is detachably connected with the connecting piece.

6. An auxiliary arm assembly according to claim 5, characterized in that the limiting part (111) and the connecting piece are detachably connected by a pin.

7. The secondary arm assembly of claim 2 wherein said connector is removably connected to said first connector end.

8. A secondary arm assembly according to any one of claims 2-7, wherein the boom guide wheel (4) comprises a pulley wheel (45) and an axle (44) mounted to the wheel body (43), the pulley wheel (45) being mounted to the axle (44).

9. A crane comprising a fly jib assembly as claimed in any one of claims 1 to 8.

10. A crane as claimed in claim 9, characterized by comprising a fuselage (2), a main jib (7) and a main luffing mechanism (5) connected to said fuselage (2), said secondary jib (11) having a second connecting end, said first and second connecting ends being the ends of said secondary jib (11) in a first direction, said second connecting end being hinged to said main jib (7), said main luffing mechanism (5) being connected to said main jib (7) for luffing said main jib (7) and said secondary jib (11).

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