CN219885518U - Lifting arm and crane - Google Patents

Abstract

The utility model relates to the technical field of cranes, and provides a crane boom and a crane, wherein the crane boom comprises a main boom, an auxiliary boom, a main lifting rope, an auxiliary luffing rope and a guide assembly; the guide assembly is used for guiding the main lifting rope and the auxiliary luffing rope; the guide component is provided with two mounting shafts and is connected with the upper section arm of the main arm through the mounting shafts; in the transport state, one of the mounting shafts is removed, and the guide assembly can be rotated to the inner side of the upper arm section. The guide component is provided with two mounting shafts and is connected with the upper section arm of the main arm through the two mounting shafts; when the guide assembly is in actual use, one of the mounting shafts is detached in a transportation state, and the guide assembly can be rotated to the inner side of the upper section arm, so that the guide assembly is not required to be detached integrally in transportation, and the operation process is simplified; and the overall volume is not increased, the transportation cost can be controlled, and the problem in the field at the present stage is solved.

Description

Lifting arm and crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a crane boom and a crane.

Background

A crane is a mechanical device commonly used in construction work. Taking a crawler crane as an example, the existing crawler crane can only use the auxiliary arm to carry out lifting on objects with large radius and small weight under the working condition of the tower arm, and has single function; if the object with small radius and large weight is needed to be hung, the arm and the connecting arm are needed to be disassembled again so as to be replaced by the working condition of the main arm. The process of detaching the arm and connecting the arm to adjust the working condition is time-consuming and labor-consuming, and the workload of operators is increased; the transportation is inconvenient, and the transportation cost is increased; in addition, the main arm and the auxiliary arm of the existing crawler crane cannot work simultaneously, and cannot carry out bench hanging on objects needing to be turned over, so that the hoisting efficiency is affected.

Therefore, how to improve the boom to reduce the workload of operators and facilitate transportation is a problem to be solved in the field at present.

It should be noted that the information disclosed in the background section of the present utility model is only for increasing the understanding of the general background of the present utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The utility model provides a crane arm, which can reduce the workload of operators, is convenient for transportation and solves the problem in the field at the present stage. The utility model also provides a crane comprising the crane arm, so that the workload of operators can be reduced, the crane is convenient to transport, and the problem in the field at the present stage is solved.

A first aspect of the present utility model provides a boom including a main boom, an auxiliary boom, a main lift line, an auxiliary luffing line, and a guide assembly; the guide assembly is used for guiding the main lifting rope and the auxiliary luffing rope;

the guide assembly is provided with two mounting shafts and is connected with the upper section arm of the main arm through the mounting shafts;

in the transport state, one of the mounting shafts is removed, and the guide assembly can be rotated to the inner side of the upper arm section.

According to the boom provided by the utility model, the guide assembly further comprises a main guide wheel and an auxiliary guide wheel which are arranged in parallel;

in a working state, the main lifting rope bypasses the main guide wheel and is used for lifting a main lifting hook of the main arm; the auxiliary luffing rope bypasses the auxiliary guide wheel and is used for changing the included angle between the main arm and the auxiliary arm.

According to the boom provided by the utility model, the guide assembly is arranged on one side of the upper joint arm close to the standard joint.

According to the crane boom provided by the utility model, the guide assembly is arranged at the middle position of the upper knuckle arm.

According to the boom provided by the utility model, the guide assembly further comprises a connecting shaft, and a first main baffle, a second main baffle, a first auxiliary baffle and a second auxiliary baffle which are arranged in parallel;

the connecting shaft sequentially penetrates through the first main baffle, the main guide wheel, the second main baffle, the first auxiliary baffle, the auxiliary guide wheel and the second auxiliary baffle.

According to the boom provided by the utility model, the guide assembly further comprises a main limiting wheel;

the main limiting wheel is arranged between the first main baffle and the second main baffle; the primary lift cord passes between the primary guide wheel and the primary limit wheel.

According to the boom provided by the utility model, the guide assembly further comprises a secondary limiting wheel;

the main limiting wheel and the auxiliary limiting wheel are respectively positioned at two sides of the connecting shaft;

the auxiliary limiting wheel is arranged between the first auxiliary baffle plate and the second auxiliary baffle plate; the auxiliary luffing rope passes through the auxiliary guide wheel and the auxiliary limiting wheel.

According to the boom provided by the utility model, the installation shaft sequentially passes through the first main baffle, the second main baffle, the first auxiliary baffle and the second auxiliary baffle and is used for being connected with the main boom.

The crane arm provided by the utility model further comprises a secondary lifting rope, wherein the secondary lifting rope is used for lifting a secondary lifting hook of the auxiliary arm.

A second aspect of the utility model provides a crane comprising a travelling mechanism, a turret and a main hoisting winch, a secondary hoisting winch, a main luffing winch, a secondary luffing winch and a boom as described in any of the foregoing arranged on the turret.

The utility model provides a crane arm, which comprises a main arm, an auxiliary arm, a main lifting rope, an auxiliary luffing rope and a guide assembly; the guide assembly is used for guiding the main lifting rope and the auxiliary luffing rope; the guide component is provided with two mounting shafts and is connected with the upper section arm of the main arm through the mounting shafts; in the transport state, one of the mounting shafts is removed, and the guide assembly can be rotated to the inner side of the upper arm section. The guide component is provided with two mounting shafts and is connected with the upper section arm of the main arm through the two mounting shafts; when the guide assembly is in actual use, one of the mounting shafts is detached in a transportation state, and the guide assembly can be rotated to the inner side of the upper section arm, so that the guide assembly is not required to be detached integrally in transportation, and the operation process is simplified; and the overall volume is not increased, and the transportation cost can be controlled. Therefore, the crane arm provided by the utility model can reduce the workload of operators, is convenient to transport, reduces the transportation cost and solves the problem in the field at the present stage.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the operation of a primary hook in an embodiment of the utility model;

FIG. 2 is a schematic view of the operation of the secondary hooks in an embodiment of the present utility model;

FIG. 3 is a schematic view of the simultaneous operation of the primary and secondary hooks in an embodiment of the present utility model;

FIG. 4 is a side view of a guide assembly according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of A-A of FIG. 4 in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic illustration of a guide assembly in accordance with an embodiment of the present utility model during transportation;

FIG. 7 is a schematic illustration of the operation of the guide assembly in an embodiment of the present utility model;

fig. 8 is a schematic view of a portion of a crane arm in accordance with an embodiment of the utility model.

Reference numerals:

1. a main arm; 2. a secondary arm; 3. a main lift cord; 4. an auxiliary luffing rope; 5. a guide assembly; 6. a main hook; 7. an auxiliary lifting hook; 8. a front mast; 9. a back mast; 10. a main luffing rope; 11. setting a knapsack; 12. a movable backpack; 13. auxiliary lifting ropes; 14. a walking mechanism; 15. a turntable; 16. a main hoisting winch; 17. auxiliary hoisting winch; 18. a main amplitude-variable winch; 19. hoisting the auxiliary luffing; 20. a front horn; 21. a rear horn; 22. a front pulling plate; 23. a rear pulling plate; 24. a main pulling plate; 25. a mounting frame;

51. a main guide wheel; 52. an auxiliary guide wheel; 53. a connecting shaft; 54. a first main baffle; 55. a second main baffle; 56. a first secondary baffle; 57. a second secondary baffle; 58. a main limit wheel; 59. an auxiliary limiting wheel; 510. and (5) mounting a shaft.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. 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 describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The boom and the crane in this embodiment will be described with reference to fig. 1 to 8; it should be understood that the following are merely illustrative embodiments of the present utility model, and are not intended to limit the present utility model in any way.

The crane arm mainly comprises a main arm 1, an auxiliary arm 2, a main lifting rope 3, an auxiliary luffing rope 4 and a guide assembly 5; the guide assembly 5 is used for guiding the main lifting rope 3 and the auxiliary luffing rope 4; the guide component 5 is provided with two mounting shafts 510 and is connected with the upper arm section of the main arm 1 through the two mounting shafts 510; in the transportation state, one of the mounting shafts 510 is detached, and the guide assembly 5 can be rotated to the inner side of the upper arm, so that the overall volume is not increased during transportation, and the transportation cost is controlled. Please refer to fig. 4 and 6.

Therefore, the crane arm provided by the utility model can reduce the workload of operators, is convenient to transport, reduces the transportation cost and solves the problem in the field at the present stage.

The boom provided by the specific embodiment, the guiding assembly 5 further comprises a main guiding wheel 51 and a secondary guiding wheel 52 which are arranged in parallel; in the working state, the main lifting rope 3 passes around the main guide wheel 51 for lifting the main hook 6 of the main arm 1; the auxiliary luffing rope 4 bypasses the auxiliary guide wheel 52 and is used for changing the included angle between the main arm 1 and the auxiliary arm 2; also, the primary and secondary lift cords 3, 4 may be routed around the guide assembly 5 on either side, respectively, see FIG. 1.

The top of the main arm 1 is hinged to the bottom of the sub arm 2.

The crane arm comprises a main arm 1, a sub-arm 2, a main lifting rope 3, a sub-luffing rope 4 and a guide assembly 5, wherein the guide assembly 5 comprises a main guide wheel 51 and a sub-guide wheel 52; the main guide wheel 51 and the sub guide wheel 52 are provided to guide the main hoisting rope 3 and the sub luffing rope 4, respectively.

In actual working, under the working condition of the tower arm, an auxiliary lifting hook 7 on the auxiliary arm 2 can be adopted to lift objects with large radius and small weight; when the object with small radius and large weight is needed to be hoisted, the included angle between the auxiliary arm 2 and the main arm 1 is only required to be adjusted to be minimum by the auxiliary luffing rope 4, so that the main lifting hook 6 on the main arm 1 is driven by the main lifting rope 3 to hoist the object with small radius and large weight, complex operations of arm disassembly and arm connection are not required, and the workload of operators is reduced; the main guide wheel and the auxiliary guide wheel are arranged in parallel, so that the main lifting rope and the auxiliary luffing rope are not interfered with each other, and winding is avoided; and, the main lifting hook 6 and the auxiliary lifting hook 7 of the lifting arm can work simultaneously, so that the object needing to be turned over is lifted, and the lifting efficiency is improved.

Therefore, the crane arm provided by the utility model can reduce the workload of operators, improve the hoisting efficiency and solve the problem in the field at the present stage.

In the boom provided in this embodiment, the main arm is composed of an upper arm section, a lower arm section, an arm head and a plurality of standard sections, in one embodiment, the guide assembly 5 may be disposed on a side of the upper arm section close to the standard section, and then the switching between the working state and the transportation state may be achieved by turning over the guide assembly 5; in another embodiment, the guiding component 5 may also be disposed at a middle position of the upper arm, and the specific disposition may be determined according to practical needs.

In practical design, the guiding component 5 can also adopt a telescopic component to complete state switching, and the telescopic component can be arranged on the inner side of the upper joint arm.

The boom provided in this embodiment, the guiding assembly 5 may further include a connecting shaft 53, and a first main baffle 54, a second main baffle 55, a first auxiliary baffle 56, and a second auxiliary baffle 57 that are arranged in parallel; and the connecting shaft 53 passes through the first main barrier 54, the main guide wheel 51, the second main barrier 55, the first sub barrier 56, the sub guide wheel 52 and the second sub barrier 57 in order; i.e. the primary guide wheel 51 is arranged between the first primary baffle 54 and the second primary baffle 55 and the secondary guide wheel 52 is arranged between the first secondary baffle 56 and the second secondary baffle 57. This arrangement enables the primary 51 and secondary 52 guide wheels to be spaced apart, thereby avoiding entanglement or kinking between the primary 3 and secondary 4 lift cords, and thereby ensuring normal operation of the primary arm 1 under the tower arm conditions.

The boom provided in this embodiment, the guiding assembly 5 may further comprise a main limiting wheel 58; the main limiting wheel 58 is arranged between the first main baffle 54 and the second main baffle 55; the main hoisting ropes 3 pass between the main guide wheel 51 and the main limit wheel 58.

Referring to fig. 5, the main limiting wheel 58 is configured to limit the main lifting rope 3 in an area surrounded by the main guiding wheel 51, the main limiting wheel 58, the first main baffle 54 and the second main baffle 55, so as to avoid the main lifting rope 3 from separating and ensure the normal lifting of the main arm 1.

The boom provided in this embodiment, the guiding assembly 5 may further comprise a secondary limiting wheel 59; the main limiting wheel 58 and the auxiliary limiting wheel 59 are respectively positioned at two sides of the connecting shaft 53, see fig. 5; and the main lifting rope 3 and the auxiliary luffing rope 4 are respectively wound in different directions, so that the winding of the main lifting rope 3 and the auxiliary luffing rope is further avoided, and the normal operation of the subsequent lifting work is ensured.

Further, a secondary stopper wheel 59 may be provided between the first secondary baffle 56 and the second secondary baffle 57; the auxiliary luffing rope 4 passes through between the auxiliary guide wheel 52 and the auxiliary limiting wheel 59. Referring to fig. 5, the auxiliary limiting wheel 59 is configured to limit the auxiliary luffing rope 4 in an area surrounded by the auxiliary guide wheel 52, the auxiliary limiting wheel 59, the first auxiliary baffle 56 and the second auxiliary baffle 57, so as to avoid the separation of the auxiliary luffing rope 4, ensure luffing of the auxiliary jib 2, and further realize lifting of the main jib 1 under the working condition of the jib.

In the boom according to the present embodiment, the mounting shaft 510 may sequentially pass through the first main barrier 54, the second main barrier 55, the first sub barrier 56, and the second sub barrier 57; the mounting shaft 510 is used to connect with the main arm 1 at the time of actual assembly.

In one of the embodiments, the guide assembly 5 may be provided with a mounting shaft 510 provided inside the upper arm section of the main arm 1, see fig. 1 and 6. Further, the number of mounting shafts 510 may be two, i.e. the guide assembly 5 is connected to the main arm 1 by means of two mounting shafts 510. Meanwhile, in the actual transportation process, the installation shaft 510 can be detached, and then the guide assembly 5 is turned over to the inner side of the upper section arm of the main arm 1, so that the guide assembly 5 can be transported without detaching the guide assembly 5, the whole volume of the upper section arm is not increased, and the transportation cost is controlled, see fig. 6.

The boom provided in this embodiment may further comprise a front mast 8 and a rear mast 9; please refer to fig. 1; one end of the front mast 8 is connected with the top end of the auxiliary arm 2, the other end of the front mast is hinged with the bottom of the auxiliary arm 2, and the rotating end of the front mast 8 is provided with a front luffing wheel 20; and one end of the back mast 9 is hinged with the bottom of the auxiliary arm 2, the other end is connected with the main arm 1, and one end of the back mast 9 far away from the main arm 1 is provided with a back luffing wheel 21.

When in actual use, the auxiliary luffing rope 4 sequentially bypasses the auxiliary guide wheel 52, the rear luffing wheel 21 and the front luffing wheel 20, so that the included angle between the front mast 8 and the rear mast 9 is changed through the auxiliary luffing rope 4, and the included angle between the main boom 1 and the auxiliary boom 2 is changed, so that luffing of the auxiliary boom 2 is realized.

Referring to fig. 3, the front mast 8 may be connected to the top end of the auxiliary arm 2 by a front pulling plate 22, the rear mast 9 may be connected to the main arm 1 by a rear pulling plate 23, and then the angle between the main arm 1 and the auxiliary arm 2 may be changed by changing the angle between the front mast 8 and the rear mast 9, so as to achieve amplitude variation of the auxiliary arm 2.

The crane arm provided by the specific embodiment can also comprise a main luffing rope 10, a fixed knapsack 11 and a movable knapsack 12; referring to fig. 8, the fixed backpack 11 may be disposed on a turntable 15 of the crane, and the fixed backpack 11 may be provided with a fixed pulley; the movable pulley can be arranged on the movable knapsack 12, and the movable knapsack 12 is connected with the top of the main arm 1.

When in actual use, the main amplitude-variable rope 10 sequentially bypasses the fixed pulley and the movable pulley, and then the distance between the movable knapsack 12 and the fixed knapsack 11 is changed through the main amplitude-variable rope 10, so that the included angle between the main arm 1 and the turntable 15 is changed, and the amplitude variation of the main arm 1 is realized.

In one embodiment, the movable backpack 12 is connected with the top of the main arm 1 through a main pulling plate 24; the backpack 11 can be arranged on the rotary table 15 through a mounting frame 25, and the mounting frame 25 can be A-shaped; the backpack 11 can be fixed on the turntable 15 through the mounting frame 25, and then the backpack 11 is assembled.

The boom provided in this embodiment may further include an auxiliary lifting rope 13, where the auxiliary lifting rope 13 is used to lift the auxiliary hook 7 of the auxiliary boom 2, so that the auxiliary boom 2 lifts an object with a large volume and a small weight.

The specific embodiment also provides a crane, which comprises a travelling mechanism 14, a turntable 15, a main lifting winch 16, a secondary lifting winch 17, a main luffing winch 18, a secondary luffing winch 19 and the crane boom, wherein the main lifting winch 16, the secondary lifting winch 17, the main luffing winch 18 and the secondary luffing winch 19 are arranged on the turntable 15, and therefore the crane is also in the scope of the utility model.

The main lifting winch 16 is used for controlling the main lifting rope 3 so as to lift the main lifting hook 6 of the main arm 1; similarly, the auxiliary lifting winch 17 is used for controlling the auxiliary lifting rope 13 so as to lift the auxiliary lifting hook 7 of the auxiliary arm 2; the main amplitude-variable winch 18 is used for controlling the main amplitude-variable rope 10 so as to realize amplitude variation of the main arm 1; the auxiliary luffing winch 19 is used for controlling the auxiliary luffing rope 4 so as to realize luffing of the auxiliary boom 2.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The crane arm is characterized by comprising a main arm (1), an auxiliary arm (2), a main lifting rope (3), an auxiliary luffing rope (4) and a guide assembly (5); the guide assembly (5) is used for guiding the main lifting rope (3) and the auxiliary luffing rope (4);

two mounting shafts (510) are arranged on the guide assembly (5), and the guide assembly is connected with the upper section arm of the main arm (1) through the mounting shafts (510);

in the transport state, one of the mounting shafts (510) is removed, and the guide assembly (5) can be rotated to the inner side of the upper arm section.

2. The boom according to claim 1, characterized in that the guiding assembly (5) further comprises a main guiding wheel (51) and a secondary guiding wheel (52) arranged side by side;

in an operating state, the main lifting rope (3) bypasses the main guide wheel (51) for lifting a main hook (6) of the main arm (1); the auxiliary luffing rope (4) bypasses the auxiliary guide wheel (52) and is used for changing the included angle between the main arm (1) and the auxiliary arm (2).

3. Boom according to claim 1, characterized in that the guide assembly (5) is arranged on the side of the upper segment arm close to the standard segment.

4. Boom according to claim 1, characterized in that the guide assembly (5) is arranged in a middle position of the upper arm section.

5. The lift arm according to claim 2, characterized in that the guide assembly (5) further comprises a connecting shaft (53) and a first main baffle (54), a second main baffle (55), a first secondary baffle (56) and a second secondary baffle (57) arranged side by side;

the connecting shaft (53) sequentially penetrates through the first main baffle plate (54), the main guide wheel (51), the second main baffle plate (55), the first auxiliary baffle plate (56), the auxiliary guide wheel (52) and the second auxiliary baffle plate (57).

6. The boom of claim 5, wherein the guide assembly (5) further comprises a primary stop wheel (58);

the main limiting wheel (58) is arranged between the first main baffle (54) and the second main baffle (55); the main hoisting rope (3) passes between the main guiding wheel (51) and the main limiting wheel (58).

7. The boom of claim 6, wherein the guide assembly (5) further comprises a secondary stop wheel (59);

the main limiting wheel (58) and the auxiliary limiting wheel (59) are respectively positioned at two sides of the connecting shaft (53);

the auxiliary limiting wheel (59) is arranged between the first auxiliary baffle plate (56) and the second auxiliary baffle plate (57); the auxiliary luffing rope (4) passes through the auxiliary guide wheel (52) and the auxiliary limiting wheel (59).

8. The lift arm according to claim 5, characterized in that the mounting shaft (510) passes through the first main stop (54), the second main stop (55), the first secondary stop (56) and the second secondary stop (57) in sequence for connection with the main arm (1).

9. Boom according to any of claims 1-5, further comprising a secondary lifting rope (13), said secondary lifting rope (13) being used for lifting a secondary hook (7) of the secondary arm (2).

10. A crane, characterized by comprising a travelling mechanism (14), a turntable (15), and a main hoisting winch (16), a secondary hoisting winch (17), a main luffing winch (18), a secondary luffing winch (19) and a jib as claimed in any one of claims 1-9, which are arranged on the turntable (15).