CN219058345U

CN219058345U - Arm support and crane of engineering machinery

Info

Publication number: CN219058345U
Application number: CN202223492229.0U
Authority: CN
Inventors: 宋威; 赵江平; 刘喜青; 周春辉; 王璐; 季成; 张浩然
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-23
Anticipated expiration: 2032-12-27

Abstract

The application discloses a boom and a crane of engineering machinery. The cantilever crane is integrated and comprises a truss section, a box section and a gooseneck section which are sequentially arranged in the extending direction of the cantilever crane. The truss section is connected with the machine body of the engineering machine. The box section is connected between truss section and gooseneck section, and the gooseneck section includes two curb plates of parallel interval setting. The side plates are of quadrilateral structures. The first edge of the side plate is connected with the box section. The second edge of the side plate and the third edge of the side plate form an obtuse angle. The fourth side of the side panel connects the first side and the third side. The bottom of the integrated arm support adopts a space truss type structure, and the structure is simple and light; the middle closed box-shaped structure has good rigidity and excessive and natural force transmission; the goose head structure at the top makes the space below the lifting pulley bigger when the lifting pulley is installed and lifted later, and is more beneficial to the further lifting of the height of the load. The simple mechanical structure is utilized, so that the engineering machinery has better lifting capacity in an environment with limited operation height.

Description

Arm support and crane of engineering machinery

Technical Field

The application relates to the technical field of engineering machinery, in particular to an arm support and a crane of engineering machinery.

Background

The caterpillar crane belongs to a mobile crane, and is a movable arm rotary crane which walks by using caterpillar tracks. The crawler belt has large grounding area, good trafficability and strong adaptability, and is suitable for hoisting operations in various fields. Under the normal condition, the working range of the arm support is limited only by the conditions of arm support performance, whole vehicle stability and the like, but when a user hopes to work in a short space, the working range of the arm support is limited by the space height, and the lifting capacity of the crane is reduced.

It should be noted that the statements in this background section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Disclosure of Invention

The application provides a boom and a crane of engineering machinery, so as to improve lifting capacity in a low environment.

The first aspect of the application provides a cantilever crane of engineering machine tool, cantilever crane as an organic whole and include a plurality of arm sections that set gradually on the extending direction of cantilever crane, a plurality of arm sections include truss section, box section and gooseneck section. The truss section is connected with the machine body of the engineering machine. The box section is connected between the truss section and the gooseneck section. The gooseneck section comprises two side plates which are arranged at intervals in parallel. The side plates are of quadrilateral structures. The first edge of the side plate is connected with the box section. An obtuse angle is formed between the second edge of the side plate and the third edge of the side plate, and the fourth edge of the side plate is connected with the first edge and the third edge.

In some embodiments, the work machine has a height limited mode of operation. In the height limiting working mode, when the amplitude variation angle of the arm support reaches the maximum amplitude variation angle, the third side is parallel to the horizontal plane.

In some embodiments, the boom further comprises a pulley assembly. The pulley assembly is disposed on the gooseneck. The pulley assembly is used for being matched with the lifting rope and the lifting appliance to carry out lifting.

In some embodiments, the sheave assembly includes a guide sheave and a lifting sheave. The guide pulley rotates the junction that sets up at the second limit and third limit. The lifting pulley is rotatably arranged at the joint of the third side and the fourth side. The lifting rope is wound between the guide pulley and the lifting pulley, and the lifting appliance is connected with the lifting pulley through the lifting rope.

In some embodiments, the guide pulley and the lifting pulley are disposed between the two side plates.

In some embodiments, the work machine has a height limited mode of operation. In the height limiting working mode, when the amplitude variation angle of the arm support reaches the maximum amplitude variation angle, the setting position of the lifting pulley on the goose head section is configured such that the highest point of the lifting pulley is the highest point of the arm support.

In some embodiments, the overall length of the boom is less than or equal to 10m.

A second aspect of the present application provides a crane comprising a boom, a swivel base and a mobile device of an engineering machine as described above. The arm support is rotationally connected with a rotating base, and the rotating base is arranged on the moving device.

Based on the technical scheme that this application provided, the cantilever crane just includes a plurality of arm sections that set gradually on the extending direction of cantilever crane as an organic whole, and a plurality of arm sections include truss section, box section and gooseneck section. The truss section is connected with the machine body of the engineering machine. The box section is connected between truss section and gooseneck section, and the gooseneck section includes two curb plates of parallel interval setting. The side plates are of quadrilateral structures. The first edge of the side plate is connected with the box section. The second edge of the side plate and the third edge of the side plate form an obtuse angle. The fourth side of the side panel connects the first side and the third side. The bottom of the integrated arm support adopts a space truss type structure, and the structure is simple and light; the middle closed box-shaped structure has good rigidity and excessive and natural force transmission; the goose head structure at the top makes the space below the lifting pulley bigger when the lifting pulley is installed and lifted later, and is more beneficial to the further lifting of the height of the load. The simple mechanical structure is utilized, so that the engineering machinery has better lifting capacity in an environment with limited operation height.

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

Drawings

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

fig. 1 is a schematic diagram of a crane according to the prior art.

Fig. 2 is a schematic diagram of a crane according to an embodiment of the present application.

FIG. 3 is a schematic view of the gooseneck boom section of FIG. 2.

Fig. 4 is a schematic view of the boom of fig. 2.

Fig. 5 is a front view of the boom of fig. 4.

Fig. 6 is a top view of the boom of fig. 4.

Fig. 7 is a perspective view of the boom of fig. 4.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways and the spatially relative descriptions used herein are construed accordingly.

When the height of the existing hoisting operation environment is limited, the hoisting height of the arm head is required to be reduced. The general strategy is to reduce the arm length and the boom elevation. The existing split truss type crane boom comprises a boom body,the shortest arm length is shown in fig. 1 after the boom elevation angle is further lowered at the moment when only the bottom joint arm and the top joint arm are installed. When the existing basic arm is adopted and the elevation operation of the arm support is reduced, the corresponding working amplitude L ₁ The lifting capacity is greatly reduced, and the construction requirement of large lifting capacity can not be met under the condition of limited height. In addition, the layout of the arm head guide pulley and the lifting pulley of the existing basic arm ensures that the top end of the guide pulley is positioned at the highest point of the whole car instead of the top end of the lifting pulley when the height operation of the arm head is reduced, and the maximum lifting height is the distance H between the ground and the lifting pulley ₁ This does not allow the load rise to be maximised.

In order to solve the problems of the prior art, the present application provides an arm support of an engineering machine, referring to fig. 1, an arm support 1 is integrated and includes a plurality of arm segments sequentially arranged in an extending direction of the arm support 1, wherein the plurality of arm segments include a truss segment 11, a box segment 12 and a gooseneck segment 13. The truss section 11 is connected to the body of the working machine. The box section 12 is connected between the truss section 11 and the gooseneck section 13, and the gooseneck section 13 includes two side plates 131 arranged in parallel at intervals. The side plate 131 has a quadrangular structure. A first edge of the side plate 131 is connected to the box section 12. The second edge 131a of the side plate 131 is at an obtuse angle to the third edge 131b of the side plate. The fourth side of the side plate 131 connects the first side and the third side.

The bottom of the integrated arm support adopts a space truss type structure, and the structure is simple and light; the middle closed box-shaped structure has good rigidity and excessive and natural force transmission; the goose head structure at the top makes the space below the lifting pulley bigger when the lifting pulley is installed and lifted later, and is more beneficial to the further lifting of the height of the load. The simple mechanical structure is utilized, so that the engineering machinery has better lifting capacity in an environment with limited operation height.

Referring to fig. 2, in some embodiments, the work machine has a limited-height mode of operation in which the third side 131b is parallel to the horizontal plane when the boom 1 luffing angle reaches the maximum luffing angle. In the height-limiting working mode, the maximum amplitude angle of the arm support is beta, at this time, the third side 131b is parallel to the horizontal plane, and the maximum lifting height is the distance H between the ground and the end of the gooseneck section 13. The distance between the end of the gooseneck 13 and the centre of rotation of the working machine is L, it being evident that in the case of height limitation, the gooseneck 13 is so arranged that the weight of the lifting can be maximally guaranteed.

Referring to fig. 4, in some embodiments, boom 1 further comprises a pulley assembly 14. A pulley assembly 14 is provided on the gooseneck 13. The sheave assembly 14 is used in conjunction with a hoist rope and spreader for lifting.

Still referring to fig. 4, in some embodiments, the sheave assembly 14 includes a guide sheave 141 and a lifting sheave 142. The guide pulley 141 is rotatably provided at the junction of the second side 131a and the third side 131 b. The lifting pulley 142 is rotatably provided at the junction of the third side 131b and the fourth side. The hoist rope is wound between the guide pulley 141 and the hoist pulley 142. The spreader is connected to the lifting pulley 142 by a lifting rope. Specifically, the connection between the third side 131b and the fourth side forms a head 13a of the goose head section 13, the first side forms a root 13c, the connection between the second side 131a and the third side 131b forms a bent portion 13b, and the head 13a is used for bearing during operation. The guide pulley 141 is provided at the bent portion 13b, and the lifting pulley 142 is provided at the head portion 13 a. The lifting rope rotates at the lifting pulley 142 to drive the lifting tool to move in the height direction, and the lifting pulley 142 is arranged at the head 13a to enable the lifting pulley 142 to be far away from the arm support 1, so that the heavy object is prevented from interfering with the arm support 1 in the lifting process.

Referring to fig. 7, in some embodiments, a guide pulley 141 and a lifting pulley 142 are disposed between the two side plates 131. In other words, the gooseneck 13 is hollow, the two pulleys are mounted in the hollow area formed by the two side plates 131, the side plates 131 protect the two pulleys, and the hollow feature can further lighten the arm support.

In some embodiments, the location of the lifting pulley 142 on the gooseneck 13 is configured such that when the work machine is in the height-limited mode of operation and the luffing angle of the boom 1 reaches the maximum luffing angle, the highest point of the lifting pulley 142 is the highest point of the boom 1. The installation position of the lifting pulley 142 directly affects the lifting height of the weight, which is more beneficial to further lifting the height of the load, thereby realizing the effect of maximizing the lifting height of the load.

In some embodiments, the overall length of the boom 1 is less than or equal to 10m. Much lower than the length of the basic arms commonly used in the prior art (greater than or equal to 13 m), and therefore, can lift heavier weights with limited working height.

In some embodiments, boom 1 is configured as a segment assembly, i.e., the truss section 11, the box section 12, and the gooseneck section 13 are detachably connected. A section may be removed as desired, for example, by removing the box section 12 and directly connecting the truss section 11 to the gooseneck section 13.

The application also provides a crane, including cantilever crane 1, gyration base 2 and the mobile device 3 of engineering machine tool as above, cantilever crane 1 and gyration base 2 rotate to be connected, and gyration base 2 sets up on mobile device 3.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; although the present application has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments herein or equivalents may be substituted for part of the technical features; without departing from the spirit of the technical solutions of the present application, it should be covered in the scope of the technical solutions claimed in the present application.

Claims

1. The arm support of the engineering machinery is characterized in that the arm support (1) is integrated and comprises a plurality of arm sections which are sequentially arranged in the extending direction of the arm support (1), and the plurality of arm sections comprise:

the truss section (11), the truss section (11) is connected with the machine body of the engineering machinery;

a box section (12); and

the goose head section (13), box section (12) are connected truss section (11) with between goose head section (13), goose head section (13) are including two curb plates (131) of parallel interval setting, curb plate (131) are quadrilateral structure, the first limit of curb plate (131) with box section (12) are connected, second limit (131 a) of curb plate (131) with be the obtuse angle between the third limit (131 b) of curb plate, the fourth edge of curb plate (131) is connected first limit with the third limit.

2. The boom of a construction machine according to claim 1, characterized in that the construction machine has a height-limited mode of operation in which the third side (131 b) is parallel to the horizontal plane when the boom (1) luffing angle reaches a maximum luffing angle.

3. Boom of a construction machine according to claim 2, characterized in that the boom (1) further comprises a pulley assembly (14), which pulley assembly (14) is arranged on the gooseneck (13), which pulley assembly (14) is intended to cooperate with a lifting rope and a lifting appliance for lifting.

4. A boom for a construction machine according to claim 3, wherein the pulley assembly (14) comprises a guide pulley (141) and a lifting pulley (142), the guide pulley (141) is rotatably arranged at the joint of the second side (131 a) and the third side (131 b), the lifting pulley (142) is rotatably arranged at the joint of the third side (131 b) and the fourth side, the lifting rope is wound between the guide pulley (141) and the lifting pulley (142), and the lifting tool is connected with the lifting pulley (142) through the lifting rope.

5. The boom of a construction machine according to claim 4, characterized in that the guide pulley (141) and the lifting pulley (142) are arranged between the two side plates (131).

6. The boom of a construction machine according to claim 4, characterized in that the construction machine has a height-limited mode of operation in which, when the luffing angle of the boom (1) reaches a maximum luffing angle, the setting position of the lifting sheave (142) on the gooseneck (13) is configured such that the highest point of the lifting sheave (142) is the highest point of the boom (1).

7. Boom of a construction machine according to any of claims 1-6, characterized in that the overall length of the boom (1) is less than or equal to 10m.

8. Crane, characterized in that it comprises a boom (1) of a working machine according to any of claims 1-7, a swivel base (2) and a moving device (3), said boom (1) being in rotational connection with said swivel base (2), said swivel base (2) being arranged on said moving device (3).