Additional counterweight structure and operating machine

Abstract

Disclosed in the present application are an additional counterweight structure and an operating machine. The additional counterweight structure comprises: a shell, wherein an accommodating cavity is provided inside the shell; a partition plate, which divides the accommodating cavity into a first counterweight cavity and a second counterweight cavity, which are longitudinally adjacent; a first filling body, which is arranged in the first counterweight cavity; and a second filling body, which is arranged in the second counterweight cavity. In the present application, the partition plate is provided inside the accommodating cavity of the shell to form the first counterweight cavity and the second counterweight cavity, and since the position of the center of gravity of the additional counterweight structure can be changed simply by means of changing the densities of the first filling body and the second filling body, the additional counterweight structure is no longer limited by its own mounting space.

Description

Additional counterweight structure and operating machinery

[0001] This application claims priority to Chinese patent application No. 202322366046.2 filed on August 31, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of operating machinery, and in particular to an additional counterweight structure and an operating machinery. Background Art

[0003] Counterweights are commonly used in operating machinery, particularly in truck cranes. To maintain balance during operation, a counterweight is typically installed at the rear of the crane's turntable. Medium and large-tonnage truck cranes typically use a main counterweight plus multiple additional counterweights. When the weight of the main counterweight alone fails to meet the overall machine's design performance requirements, additional counterweights can be added to either side of the main counterweight. To avoid loading and unloading difficulties and center of gravity shifts caused by an uneven center of gravity, the center of gravity of the additional counterweights must be aligned with the main counterweight.

[0004] At present, the existing additional counterweights are generally structures with uniform density. In order to meet the requirement of consistent center of gravity line, the additional counterweights are generally arranged on both sides of the main counterweight along the center of gravity line. Since the installation space of the additional counterweight is an irregular space, in order to make the center of gravity of the additional counterweight with uniform density more easily coincide with the center of gravity line of the main counterweight, the volume of the additional counterweight is usually reduced to make the shape of the additional counterweight more regular. However, in order to meet the weight requirement, the additional counterweight needs to be manufactured using materials with higher density. The manufacturing process of materials with higher density is not only time-consuming and labor-intensive, but also difficult to process. Therefore, the existing additional counterweights also have the problems of large amount of consumables and difficulty in manufacturing. Technical issues

[0005] The present application provides an additional counterweight structure and an operating machine to solve the problem that the existing additional counterweight is difficult to manufacture and consumes a large amount of materials. Technical Solutions

[0006] In the first aspect, the present application provides an additional counterweight structure for being installed on one side of a main counterweight to increase the weight, comprising: a shell having a accommodating cavity inside, a partition arranged in the accommodating cavity, the partition dividing the accommodating cavity into a first counterweight cavity and a second counterweight cavity adjacent in the longitudinal direction, a first filling body arranged in the first counterweight cavity, a second filling body arranged in the second counterweight cavity, and the density of the second filling body being different from the density of the first filling body.

[0007] A partition is arranged inside the accommodating cavity of the shell to form a first counterweight cavity and a second counterweight cavity, while increasing the volume of the shell and making the shape of the shell match the shape of the installation space. Since the center of gravity position of the additional counterweight structure can be changed by changing the density of the first filling body and the second filling body, the center of gravity line of the additional counterweight structure under this structure can still coincide with the center of gravity line of the main counterweight, so that the structure of the additional counterweight is no longer restricted by its own installation space. Since the volume of the additional counterweight structure is increased, the weight requirement of the additional counterweight structure can be met by using fillers with lower density, such as common iron ore or concrete, without the need to use materials such as cast iron with a long manufacturing process. While improving space utilization, the manufacturing difficulty of the additional counterweight structure is greatly reduced, effectively solving the problem that the existing additional counterweight is difficult to manufacture and consumes a large amount of materials.

[0008] In one embodiment, the shell includes a bottom plate, a plurality of surrounding plates and a cover plate, and the bottom plate, the plurality of surrounding plates and the cover plate together form a receiving cavity.

[0009] The structure is simple and easy to process and manufacture.

[0010] In one embodiment, the outer wall surface of the enclosure away from the turntable side forms an arc surface, and the center of the arc surface is the rotation center of the additional counterweight structure.

[0011] The arc surface can ensure that it does not interfere with other components while improving the space utilization of the additional counterweight installation space, ensuring working reliability while maximizing the volume of the shell.

[0012] In one embodiment, the volume of the first counterweight cavity is smaller than the volume of the second counterweight cavity, and the density of the first filling body is greater than the density of the second filling body.

[0013] In the case of inconsistent volumes of the counterweight cavity, the center of gravity of the additional counterweight structure is ensured to be at a preset position to prevent the overall center of gravity of the additional counterweight structure from being uneven.

[0014] In one embodiment, the bulkhead is coplanar with the transverse center of gravity of the main counterweight.

[0015] After the position of the transverse center of gravity line is determined, the partition can be fixedly installed accordingly, thereby simplifying the manufacturing process of the shell.

[0016] In one embodiment, the enclosure panels close to the main counterweight among the plurality of enclosure panels form a connecting panel, on which a plurality of connecting structures are provided, and the additional counterweight structure is fixedly connected to the main counterweight via the connecting structures.

[0017] The additional counterweight structure can be fixedly connected to the main counterweight through its own connection structure without the need for additional separate connecting parts.

[0018] In one embodiment, the connection structure is a hanging ear.

[0019] The structure is simple and easy to process and manufacture.

[0020] In one embodiment, two enclosures adjacent to the connecting plate are each provided with a hanging structure, and a connecting line of the two hanging structures passes through the center of gravity of the additional counterweight structure.

[0021] To ensure that the additional counterweight structure can maintain balance during the movement, when transporting the additional counterweight structure, the additional counterweight structure can be moved by connecting the transportation device to the lifting structure, and the disassembly and assembly operations are simple and quick.

[0022] In one embodiment, the hanging structure is a hanging ear.

[0023] The structure is simple and easy to process and manufacture.

[0024] In a second aspect, the present application further provides an operating machine, which includes: a main counterweight, suitable for being arranged on a turntable, and at least two of the above-mentioned additional counterweight structures, suitable for being arranged on both sides of the main counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] FIG1 is a cross-sectional schematic diagram of an additional counterweight structure according to an embodiment of the present application;

[0027] FIG2 is a top view of the additional counterweight structure shown in FIG1 ;

[0028] FIG3 is a top view of the additional counterweight structure shown in FIG1 with a cover plate installed;

[0029] FIG4 is a top view of the additional counterweight structure shown in FIG1 assembled on the main counterweight.

[0030] Description of reference numerals:

[0031] 101. First counterweight cavity; 102. Second counterweight cavity; 103. Bottom plate; 104. Enclosure; 1041. Connecting plate; 105. Cover plate; 106. Additional counterweight center of gravity; 2. Partition; 3. Hanging ear; 4. Lifting ear; 5. Main counterweight; 501. Horizontal center of gravity line; 502. Main counterweight center of gravity. Modes for Carrying Out the Invention

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0033] The following describes an embodiment of the present application in conjunction with FIG. 1 to FIG. 4 .

[0034] In the related art, since the counterweight as a whole needs to rotate with the turntable, in order to avoid the counterweight interfering with other components on the truck crane, the space in which the counterweight can be installed is very limited and the installation space is irregular as a whole. The outer contour of the space that the counterweight can occupy is arc-shaped. Therefore, in order to make the transverse center of gravity line 501 of the additional counterweight with uniform density coincide with the transverse center line 501 of the main counterweight 5, the volume of the additional counterweight needs to be reduced so that the additional counterweight can be distributed as axially symmetrically as possible along the transverse center line 501 of the main counterweight 5, making it impossible for the additional counterweight to fully utilize the installation space available to it. In order to meet the weight requirements, the interior of the existing additional counterweight needs to be filled with a material with a higher density such as cast iron.

[0035] Here, the horizontal direction refers to the “horizontal” direction indicated by the arrow in FIG. 1 .

[0036] According to an embodiment of the present application, on the one hand, an additional counterweight structure is provided, which is used to be installed on one side of the main counterweight 5 to increase the weight, including: a shell, a partition 2, a first filling body and a second filling body. The shell has a accommodating cavity inside, and the partition 2 is arranged in the accommodating cavity. The partition 2 divides the accommodating cavity into a first counterweight cavity 101 and a second counterweight cavity 102 adjacent in the longitudinal direction. A filling body is arranged in the first counterweight cavity 101, and a second filling body is arranged in the second counterweight cavity 102. The density of the second filling body is different from the density of the first filling body.

[0037] In the application of the additional counterweight structure of this embodiment, a partition 2 is arranged inside the accommodating cavity of the shell to form a first counterweight cavity 101 and a second counterweight cavity 102, while increasing the volume of the shell and making the shape of the shell match the shape of the installation space. Since the center of gravity position of the additional counterweight structure can be changed by changing the density of the first filling body and the second filling body, the center of gravity line of the additional counterweight structure under this structure can still coincide with the center of gravity line of the main counterweight 5, so that the structure of the additional counterweight is no longer restricted by its own installation space. Since the volume of the additional counterweight structure is increased, the weight requirement of the additional counterweight structure can be met by using fillers with lower density, such as common iron ore or concrete, without the need to use materials such as cast iron with a long manufacturing process. While improving space utilization, the manufacturing difficulty of the additional counterweight structure is greatly reduced, effectively solving the problem that the existing additional counterweight is difficult to manufacture and consumes a large amount of materials.

[0038] The longitudinal direction refers to the “longitudinal” direction indicated by the arrow in FIG1 , which is perpendicular to the transverse direction.

[0039] Specifically, in the related art, if materials such as cast iron are used for filling, they need to be manufactured separately according to the required density. The process is time-consuming and labor-intensive and consumes a lot of energy and materials. In this embodiment, since the volume of the shell is increased, under the same weight requirement, the use requirements can be met by using iron ore or concrete with lower density. The filling material is common and easy to manufacture, which can effectively simplify the manufacturing process of the additional counterweight structure.

[0040] In this embodiment, the shell includes a bottom plate 103, multiple surrounding plates 104 and a cover plate 105. The bottom plate 103, multiple surrounding plates 104 and the cover plate 105 together form a receiving cavity, which has a simple structure and is easy to process and manufacture.

[0041] Specifically, the bottom plate 103 and the cover plate 105 form the lower end surface and the upper end surface respectively, and the plurality of enclosure plates 104 are arranged around to form side walls. There is no strict restriction on the specific shape of the bottom plate 103, the plurality of enclosure plates 104 and the cover plate 105, and the shape can be selected according to the installation space of the additional counterweight.

[0042] In this embodiment, the outer wall surface of the enclosure 104 on the side away from the turntable forms an arc surface, and the center of the arc surface is the rotation center of the additional counterweight structure. Since the additional counterweight structure needs to rotate with the turntable, the arc surface can ensure that it does not interfere with other components while improving the space utilization of the additional counterweight installation space, ensuring working reliability while maximizing the volume of the shell.

[0043] It can be understood that, as an alternative embodiment, the outer wall surface of the enclosure 104 away from the turntable side can also be a plane, a multi-segment curved surface or a multi-segment connected plane, which can be selected according to actual needs and is not strictly limited here.

[0044] In this embodiment, the volume of the first counterweight cavity 101 is smaller than that of the second counterweight cavity 102, and the density of the first filling body is greater than the density of the second filling body. In the case of inconsistent volumes of the counterweight cavities, the center of gravity line of the additional counterweight structure is ensured to be in a preset position to prevent the overall center of gravity of the additional counterweight structure from being uneven.

[0045] Specifically, there is no limitation on the types of the first filler and the second filler, which may be iron ore, cast steel, concrete, etc. of different densities. The specific filling types of the first filler and the second filler can be selected according to the center of gravity position.

[0046] In one embodiment, the first filling body is high-density iron ore or cast steel, and the second filling body is low-density iron ore or concrete.

[0047] Here, the first filling body and the second filling body refer to the main substances filled in the first counterweight cavity 101 and the second counterweight cavity 102, and do not mean that only a single substance can be filled in the first counterweight cavity 101 and the second counterweight cavity 102. During manufacturing, in order to prevent the first filling body and the second filling body from shaking in the corresponding counterweight cavity, it is necessary to fill the gaps with mortar and compact it on the vibration platform.

[0048] In this embodiment, the partition 2 is coplanar with the transverse center of gravity line 501 of the main counterweight 5. After the position of the transverse center of gravity line 501 is determined, the partition 2 can be fixedly installed accordingly, simplifying the manufacturing process of the shell.

[0049] Specifically, the partition 2 is vertically arranged in the accommodating cavity, and the transverse center of gravity line 501 of the main counterweight 5 refers to an extension line extending laterally through the center of gravity of the main counterweight 5, as shown by the transversely extending dotted line in FIG. 4 .

[0050] The horizontal direction refers to the “horizontal” direction indicated by the arrow in FIG1 , and the vertical direction refers to the “vertical” direction indicated by the arrow in FIG1 .

[0051] In this embodiment, the enclosure 104 close to the main counterweight 5 among the multiple enclosures 104 forms a connecting plate 1041, and a number of connecting structures are provided on the connecting plate 1041. The additional counterweight structure is fixedly connected to the main counterweight 5 through the connecting structure. The additional counterweight structure can be fixedly connected to the main counterweight 5 through its own connecting structure without the need to set up additional separate connecting parts.

[0052] Specifically, there is no limitation on the number and location of the connection structures, which can be one or more. The location of the connection structures needs to be determined based on the balance of the hanging points and can be selected according to the specifications of the main counterweight 5.

[0053] In this embodiment, the connection structure is a hanging ear 3, which has a simple structure and is easy to process and manufacture.

[0054] In this embodiment, a lifting structure is provided on the two enclosures 104 adjacent to the connecting plate 1041. The connecting line of the two lifting structures passes through the center of gravity of the additional counterweight structure to ensure that the additional counterweight structure can maintain balance during the movement. When transporting the additional counterweight structure, the additional counterweight structure can be moved by connecting the transport device to the lifting structure, and the disassembly and assembly operations are simple and quick.

[0055] Specifically, there are at least two lifting structures, which are respectively arranged on the outer wall surface of the enclosure 104 on the side away from the turntable and the outer wall surface of the enclosure 104 on the side close to the turntable. The plates on both sides are respectively provided with installation grooves, and the lifting structures are arranged in the installation grooves. As shown in Figure 1, the dotted line passing through the two lifting structures is the connecting line of the two lifting structures, so that it passes through the center of gravity of the additional counterweight structure to meet the lifting balance principle.

[0056] In this embodiment, the lifting structure is a lifting ear 4, which has a simple structure and is easy to manufacture.

[0057] The following describes the overall design process of the additional counterweight structure of this embodiment:

[0058] Make the outer arc of the accessory counterweight structure concentric with the outer arc of the main counterweight 5, and the two have the same radius to ensure that the counterweight structure does not interfere with the engine hood, etc. when the turntable rotates; determine the transverse center of gravity line of the additional counterweight structure based on the additional counterweight center of gravity 106 and the main counterweight center of gravity 502 maintaining the same horizontal straight line; determine the shape of the shell, the volume of the first counterweight cavity 101 and the volume of the second counterweight cavity 102 according to the maximum space available for the additional counterweight structure; determine the longitudinal center of gravity line of the additional counterweight structure and the position of the lifting ear 4 through the principle of lifting balance, and determine the position of the hanging ear 3 through the balance of the hanging point and other factors; use the principle of center of gravity balance to fill the first counterweight cavity 101 and the second counterweight cavity 102 with corresponding materials, and finally fill the gap with mortar and compact it on the vibration platform.

[0059] According to an embodiment of the present application, on the other hand, a working machine is provided, which includes: a main counterweight 5 and at least two of the above-mentioned additional counterweight structures, the main counterweight 5 is suitable for being set on a turntable, and the at least two additional counterweight structures are suitable for being set on both sides of the main counterweight 5.

[0060] In this embodiment, the working machine is a working machine such as a truck crane, a conveyor, or a transfer machine that has a turntable and needs to be equipped with a counterweight.

[0061] Specifically, as shown in FIG4 , the main counterweight 5 and the additional counterweight structure are viewed from above. The lower portion of the main counterweight 5 is fixedly connected to the turntable. As the turntable rotates, the outer contours of the main counterweight 5 and the additional counterweight structure are in an arc shape.

[0062] Here, the downward direction refers to the “downward” direction indicated by the arrow in FIG. 4 .

[0063] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An additional counterweight structure, used to be installed on one side of a main counterweight (5) to increase weight, wherein: The additional counterweight structure comprises: A shell body having a receiving cavity therein; A partition (2) is arranged in the accommodating cavity, the partition (2) dividing the accommodating cavity into a first counterweight cavity (101) and a second counterweight cavity (102) adjacent to each other in the longitudinal direction; A first filling body, arranged in the first counterweight cavity (101); A second filling body is arranged in the second counterweight cavity (102), and the density of the second filling body is different from the density of the first filling body.

2. The additional counterweight structure according to claim 1, wherein: The shell comprises a bottom plate (103), a plurality of surrounding plates (104) and a cover plate (105); the bottom plate (103), the plurality of surrounding plates (104) and the cover plate (105) together form the accommodating cavity.

3. The additional counterweight structure according to claim 2, wherein: The outer wall surface of the enclosure (104) at the side away from the turntable forms an arc surface, and the center of the arc surface is the rotation center of the additional counterweight structure.

4. The additional counterweight structure according to any one of claims 1 to 3, wherein: The volume of the first counterweight cavity (101) is smaller than the volume of the second counterweight cavity (102), and the density of the first filling body is greater than the density of the second filling body.

5. The additional counterweight structure according to any one of claims 1 to 4, wherein: The partition plate (2) is coplanar with a transverse center of gravity line (501) of the main counterweight (5).

6. The additional counterweight structure according to any one of claims 2 to 5, wherein: The enclosing plates (104) close to the main counterweight (5) among the plurality of enclosing plates (104) form a connecting plate (1041), and a plurality of connecting structures are provided on the connecting plate (1041), and the additional counterweight structure is fixedly connected to the main counterweight (5) via the connecting structures.

7. The additional counterweight structure according to claim 6, wherein: The connection structure is a hanging ear (3).

8. The additional counterweight structure according to claim 6 or 7, wherein: The two enclosures (104) adjacent to the connection plate (1041) are each provided with a hanging structure, and a connection line between the two hanging structures passes through the center of gravity of the additional counterweight structure.

9. The additional counterweight structure according to claim 8, wherein: The hanging structure is a hanging ear (4).

10. A working machine, wherein: The working machine comprises: A main counterweight (5) adapted to be arranged on a turntable; At least two additional counterweight structures according to any one of claims 1 to 9 are suitable for being arranged on both sides of the main counterweight (5).

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