Weight device for a work machine and work machine

Abstract

The application relates to the technical field of working machines, and discloses a counterweight device for a working machine and the working machine, the counterweight device comprising: a first counterweight shell arranged at the tail side of a rotating platform of the working machine and connected with the rotating platform; a second counterweight shell arranged at one side in the width direction of the rotating platform, connected with the rotating platform and located at the front side of the first counterweight shell; and a third counterweight shell connected with the rotating platform and oppositely distributed with the second counterweight shell, the third counterweight shell and / or the second counterweight shell and / or the first counterweight shell can cooperate with each other to balance the overturning moment generated by a digging device of the working machine when the digging device performs a digging operation, and an installation space for mounting a to-be-mounted component module of the working machine is formed between the three counterweight shells. The counterweight device can more efficiently utilize the space of the rotating platform while balancing the overturning moment generated by the working machine, and can replace part of the appearance shell of the working machine to save materials.

Description

Technical Field

[0001] This application belongs to the field of work machinery technology, specifically relating to a counterweight device for work machinery and work machinery. Background Technology

[0002] Traditional excavators (such as hydraulic excavators) mainly consist of a working device, a lower section, a turntable, and electro-hydraulic components. The counterweight requires a significant portion of the space on the rear side of the turntable for placement and installation. For smaller excavators, not only must the electro-hydraulic components, cab, working device, operating device, and counterweight be arranged on the turntable, but sufficient clearance must also be maintained between non-connected parts to prevent assembly interference or vibration interference. This makes the space on the turntable extremely valuable, and efficiently utilizing this space and arranging the various components becomes very challenging. In summary, the main technical disadvantages of existing excavator counterweights are: 1. The counterweight is used to match the stability of the whole machine. It is fixed to the rear side of the turntable. The weight requirement is generally large, which requires sacrificing some turntable space. 2. Counterweights often only have simple appearance designs, and the area of ​​the counterweight A-side (the appearance surface of the counterweight when it is installed in the molding machine and exposed to the view) is small, making it difficult to have an effective appearance design. 3. The counterweights of miniature machinery are usually cast. In order to meet the required quality and installation requirements, the counterweight mounting surface is usually complex in structure and the mold is difficult to manufacture. Utility Model Content

[0003] The purpose of this application is to provide a counterweight device for working machinery and working machinery, which can effectively utilize the turntable space of the working machinery while balancing the overturning moment generated by the working machinery.

[0004] To achieve the above objectives, this application provides a counterweight device for operating machinery, the counterweight device comprising: The first counterweight housing is located on the rear side of the turntable of the operating machinery and is connected to the turntable; The second counterweight housing is located on one side of the turntable in the width direction and is connected to the turntable. The second counterweight housing is located in front of the first counterweight housing. The third counterweight housing is connected to the turntable and is distributed opposite to the second counterweight housing. The third counterweight housing and / or the second counterweight housing and / or the first counterweight housing can cooperate with each other to balance the overturning moment generated by the digging device of the working machine when performing digging operations. The third counterweight housing, the second counterweight housing and the first counterweight housing form an installation space for installing the components to be installed on the working machine.

[0005] In the embodiments of this application, a first connecting portion is formed on both sides of the width direction of the first counterweight housing, and the first connecting portion is connected to the turntable by a first bolt assembly.

[0006] In the embodiments of this application, the working machinery further includes connecting plates respectively disposed on both sides of the turntable in the width direction, and the connecting plates are formed with second connecting portions distributed vertically, the second connecting portions being connected to the first connecting portions by a first bolt assembly.

[0007] In the embodiments of this application, the component module to be installed includes a first component to be installed adjacent to the front side of the first counterweight housing. A first contour surface is formed on the side wall of the first counterweight housing facing the installation space. The contour shape of the first contour surface is consistent with the contour shape of the side wall of the first component to be installed facing the first counterweight housing.

[0008] In the embodiments of this application, the second counterweight housing is connected to the turntable via a second bolt assembly, and the third counterweight housing is connected to the turntable via a third bolt assembly.

[0009] In the embodiments of this application, the third counterweight shell, the second counterweight shell, and the first counterweight shell are all castings.

[0010] In the embodiments of this application, the component module to be installed includes a second component to be installed adjacent to the side of the second counterweight housing facing the installation space. A second contour surface is formed on the side wall of the second counterweight housing facing the installation space, and the contour shape of the second contour surface is consistent with the contour shape of the side wall of the second component to be installed facing the second counterweight housing.

[0011] In the embodiments of this application, the component module to be installed includes a third component to be installed adjacent to the side of the third counterweight housing facing the installation space. A third contour surface is formed on the side wall of the third counterweight housing facing the installation space, and the contour shape of the third contour surface is consistent with the contour shape of the side wall of the third component to be installed facing the third counterweight housing.

[0012] In embodiments of this application, the operating machinery further includes a first side panel and a second side panel. The first side panel is disposed on the front side of the second counterweight housing and connected to the turntable. A first contact surface is formed on the rear side of the first side panel. A second contact surface for contacting the first contact surface is formed on the front side of the second counterweight housing. The second side panel is disposed on the front side of the third counterweight housing and connected to the turntable. A third contact surface is formed on the rear side of the second side panel. A fourth contact surface for contacting the third contact surface is formed on the front side of the third counterweight housing.

[0013] A second aspect of this application provides a work machine that includes the aforementioned counterweight device.

[0014] As shown in the above technical solution, the counterweight device includes: a first counterweight housing, disposed on the rear side of the turntable of the operating machinery and connected to the turntable; a second counterweight housing, disposed on one side of the turntable in the width direction and connected to the turntable, the second counterweight housing being located in front of the first counterweight housing; and a third counterweight housing, connected to the turntable and distributed opposite to the second counterweight housing. The third counterweight housing and / or the second counterweight housing and / or the first counterweight housing can cooperate with each other to balance the overturning moment generated by the digging device of the operating machinery during digging operations. An installation space is formed between the third counterweight housing, the second counterweight housing, and the first counterweight housing for installing the components to be installed on the operating machinery. This counterweight device can effectively improve the space utilization of the turntable while balancing the overturning moment generated by the operating machinery, and can serve as the rear half of the operating machinery's housing without the need for side plates or other structures.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 Exploded view of the operating machinery; Figure 2 This is a schematic diagram of the counterweight device; Figure 3 This is a schematic diagram of the counterweight installation. Figure 4 This is a side view of the operating machinery; Figure 5 This is a rear view of the operating machinery.

[0017] Explanation of reference numerals in the attached figures 1-First counterweight housing; 101-First connecting part; 102-First contoured surface; 2-Second counterweight housing; 203-Second contoured surface; 204-Second mating surface; 3-Third counterweight housing; 301-Third contoured surface; 4-Turntable; 401-Connecting plate; 402-Second connecting part; 5-Excavating device; 6-Module of component to be installed; 601-First component to be installed; 7-Installation space; 8-First side panel; 801-First mating surface; 9-Second side panel; 10-Unloading; 11-Roll cage; 12-Seat. Detailed Implementation

[0018] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0019] Embodiments of this application provide a counterweight device for operating machinery, such as... Figures 1-5 As shown, the counterweight device includes: The first counterweight housing 1 is located on the rear side of the turntable 4 of the working machinery and is connected to the turntable 4. The second counterweight housing 2 is disposed on one side of the turntable 4 in the width direction and connected to the turntable 4. The second counterweight housing 2 is located in front of the first counterweight housing 1. The third counterweight housing 3 is connected to the turntable 4 and is distributed opposite to the second counterweight housing 2. The third counterweight housing 3 and / or the second counterweight housing 2 and / or the first counterweight housing 1 can cooperate with each other to balance the overturning moment generated by the digging device 5 of the working machinery when performing digging operations. The third counterweight housing 3, the second counterweight housing 2 and the first counterweight housing 1 form an installation space 7 for installing the components 6 to be installed on the working machinery.

[0020] Specifically, in this embodiment, the operating machinery can be a hydraulic excavator, which includes a digging device 5, a turntable 4, a lower carriage 10, a roll cage 11, a counterweight device, and other component modules 6 to be installed. The digging device 5 is located on the front side of the hydraulic excavator and is mounted on the turntable 4 by a pin. The digging device 5 can swing left and right relative to the turntable 4, thus generating overturning moments in different directions when performing digging operations. The roll cage 11 is fixed to the turntable 4 by bolts, and the turntable 4 is connected to the lower carriage 10 by a slewing bearing. The component modules 6 to be installed include, but are not limited to, hydraulic oil tanks, batteries, fuel tanks, valve groups, etc. The first counterweight housing 1 is connected to the rear side of the turntable 4. The second counterweight housing 2 is connected to the left side of the turntable 4 in the width direction and installed closer to the rear side in the length direction. The third counterweight housing 3 is connected to the right side of the turntable 4 in the width direction and installed closer to the rear side in the length direction. The first counterweight housing 1, the second counterweight housing 2, and the third counterweight housing 3 are not connected to each other. When the digging device 5 of the hydraulic excavator performs digging operations in the downward, left, and right directions, the first counterweight housing 1, the second counterweight housing 2, and the third counterweight housing 3 can cooperate with each other and balance the overturning moments in different directions generated by the digging operation. The first counterweight housing 1, the second counterweight housing 2, and the third counterweight housing 3 are all located on the outside of the turntable 4. The three together form an installation space 7, and their exterior surfaces together constitute the exterior shell of the rear half of the hydraulic excavator. At the same time, the counterweight device can protect the rear half of the turntable 4 and has a good protective effect on the electrical and hydraulic components installed on the turntable 4.

[0021] The counterweight device for the work machinery has a simple structure. The third counterweight shell 3 and / or the second counterweight shell 2 and / or the first counterweight shell 1 can cooperate with each other to balance the overturning moment generated by the digging device 5 of the work machinery when performing digging operations. The third counterweight shell 3, the second counterweight shell 2 and the first counterweight shell 1 form an installation space 7 for installing the work machinery's component modules 6. It can effectively improve the space utilization rate on the turntable 4 while balancing the overturning moments generated by the work machinery in different directions. Furthermore, the counterweight device can serve as the outer shell structure of the rear half of the work machinery, thereby saving the manufacturing and molding costs of traditional work machinery shells.

[0022] Furthermore, the first counterweight housing 1, the second counterweight housing 2, and the third counterweight housing 3 can all be further segmented and installed according to installation and other requirements in other practical application scenarios.

[0023] In this embodiment, the first counterweight housing 1 has a first connecting part 101 on both sides in the width direction, and the first connecting part 101 is connected to the turntable 4 by a first bolt assembly.

[0024] Specifically, a first connecting portion 101 extending to the side is formed on both sides of the width direction of the first counterweight housing 1 (i.e., the first connecting portion 101 on the left side of the width direction extends to the left, and the first connecting portion 101 on the right side of the width direction extends to the right). The first connecting portion 101 can be a rectangular plate structure. A first mounting hole is formed on the first connecting portion 101, and a first bolt assembly passes through the first mounting hole to fix the first connecting portion 101 to the turntable 4. The first connecting portions 101 are located on both sides of the width direction of the first counterweight housing 1 so that the middle position of the first counterweight housing 1 (i.e., the position between the two sides of the width direction of the first counterweight housing 1) does not need to occupy more space due to installation, thereby further saving the space on the turntable 4.

[0025] The working machinery in this embodiment also includes connecting plates 401 respectively disposed on both sides of the turntable 4 in the width direction. The connecting plates 401 have second connecting parts 402 distributed vertically. The second connecting parts 402 are connected to the first connecting parts 101 by the first bolt assembly.

[0026] Specifically, the connecting plate 401 can be selected as a structure with a certain width and an L-shaped cross-section. The horizontally distributed part of the connecting plate 401 (i.e., the horizontal part of the L-shaped structure) is connected to the turntable 4. The second connecting part 402 (i.e., the vertical part of the L-shaped structure) extends vertically upward and forms a second mounting hole. The first bolt assembly passes through the first connecting part 101 and the second connecting part 402 in sequence to form a fixed connection between the first counterweight housing 1 and the turntable 4. The first counterweight housing 1 and the turntable 4 are detachably connected by bolts rather than being completely fixedly connected by welding or other means, which makes it convenient to disassemble and replace the first counterweight housing 1.

[0027] In this embodiment, the component module 6 to be installed includes a first component 601 to be installed adjacent to the front side of the first counterweight housing 1. A first contour surface 102 is formed on the side wall of the first counterweight housing 1 facing the installation space 7. The contour shape of the first contour surface 102 is consistent with the contour shape of the side wall of the first component 601 facing the first counterweight housing 1.

[0028] Specifically, in this embodiment, the first component to be installed, 601, is a hydraulic oil tank. When designing and manufacturing the first counterweight housing 1, the outline shape of the first contour surface 102 is designed to be consistent with the outline shape of the side wall of the hydraulic oil tank facing the first counterweight housing 1. The outline size of the first contour surface 102 must ensure that when the first counterweight housing 1 is installed on the turntable 4, there is an installation gap between the first counterweight housing 1 and the hydraulic oil tank (the width of the installation gap is in the range of 5mm-10mm). The above contour setting can not only further save the space on the turntable 4, but also effectively prevent assembly interference or vibration interference of the hydraulic excavator.

[0029] In this embodiment, the second counterweight housing 2 is connected to the turntable 4 by a second bolt assembly, and the third counterweight housing 3 is connected to the turntable 4 by a third bolt assembly.

[0030] Specifically, the second counterweight housing 2 is provided with three third mounting holes, through which a second bolt assembly passes and forms a fixed connection between the second counterweight housing 2 and the turntable 4. The third counterweight housing 3 is provided with three fourth mounting holes, through which a third bolt assembly passes and forms a fixed connection between the third counterweight housing 3 and the turntable 4.

[0031] In this embodiment, the third counterweight shell 3, the second counterweight shell 2, and the first counterweight shell 1 are all castings.

[0032] Specifically, the high density of the castings allows for greater mass within a limited space, ensuring sufficient balance and overturning moment while saving space. In addition, the high structural strength and good appearance adaptability of the castings ensure the structural reliability of the counterweight device and provide a good foundation for the contour design of the contoured surface.

[0033] In this embodiment, the component module 6 to be installed includes a second component to be installed adjacent to the side of the second counterweight housing 2 facing the installation space 7. A second contour surface 203 is formed on the side wall of the second counterweight housing 2 facing the installation space 7. The contour shape of the second contour surface 203 is consistent with the contour shape of the side wall of the second component to be installed facing the second counterweight housing 2.

[0034] Specifically, in this embodiment, the second component to be installed is the main pump. When designing and manufacturing the second counterweight housing 2, the outline shape of the second contour surface 203 is designed to be consistent with the outline shape of the side wall of the main pump facing the second counterweight housing 2. The outline dimensions of the second contour surface 203 must ensure that when the second counterweight housing 2 is installed on the turntable 4, there is an installation gap between the second counterweight housing 2 and the main pump (the width of the installation gap is in the range of 5mm-10mm). The above contour setting can not only further save the space on the turntable 4, but also effectively prevent assembly interference or vibration interference of the hydraulic excavator.

[0035] In this embodiment, the component module 6 to be installed includes a third component to be installed adjacent to the side of the third counterweight housing 3 facing the installation space 7. A third contour surface 301 is formed on the side wall of the third counterweight housing 3 facing the installation space 7. The contour shape of the third contour surface 301 is consistent with the contour shape of the side wall of the third component to be installed facing the third counterweight housing 3.

[0036] Specifically, in this embodiment, the third component to be installed is a radiator. When designing and manufacturing the third counterweight housing 3, the outline shape of the third contour surface 301 is designed to be consistent with the outline shape of the side wall of the radiator facing the third counterweight housing 3. The outline size of the third contour surface 301 must ensure that when the third counterweight housing 3 is installed on the turntable 4, there is an installation gap between the third counterweight housing 3 and the radiator (the width of the installation gap is in the range of 5mm-10mm). The above contour setting can not only further save the space on the turntable 4, but also effectively prevent assembly interference or vibration interference of the hydraulic excavator.

[0037] The working machine in this embodiment also includes a first side panel 8 and a second side panel 9. The first side panel 8 is disposed on the front side of the second counterweight housing 2 and connected to the turntable 4. A first contact surface 801 is formed on the rear side of the first side panel 8. A second contact surface 204 for contacting the first contact surface 801 is formed on the front side of the second counterweight housing 2. The second side panel 9 is disposed on the front side of the third counterweight housing 3 and connected to the turntable 4. A third contact surface is formed on the rear side of the second side panel 9. A third contact surface for contacting the third contact surface is formed on the front side of the third counterweight housing 3.

[0038] Specifically, the operating machinery also includes a seat 12 bolted to the turntable 4. The first side panel 8 and the second side panel 9 are located on the lower side of the seat 12. The first side panel 8 and the second counterweight housing 2 are bonded together through the first contact surface 801 and the second contact surface 204. The outward-facing outer walls of the first side panel 8 and the second counterweight housing 2 form a continuous curved transition, together constituting the exterior shell of the left side of the hydraulic excavator. The second side panel 9 and the third counterweight housing 3 are bonded together through the third contact surface. The outward-facing outer walls of the second side panel 9 and the third counterweight housing 3 form a continuous curved transition, together constituting the exterior shell of the right side of the hydraulic excavator. The above arrangement enables the first side panel 8, the second side panel 9, the second counterweight housing 2, and the third counterweight housing 3 to jointly constitute the side shell of the hydraulic excavator. This not only ensures that the appearance and outline of the shell remain continuous during design and manufacturing, thus forming a unified visual whole, but also protects the component modules 6 to be installed on the turntable 4.

[0039] Another embodiment of this application provides a work machine that includes the counterweight device for work machines described in the above embodiments.

[0040] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A counterweight device for working machinery, characterized in that, The counterweight device includes: The first counterweight housing (1) is set on the tail side of the turntable (4) of the working machine and connected to the turntable (4); The second counterweight housing (2) is disposed on one side of the turntable (4) in the width direction and connected to the turntable (4). The second counterweight housing (2) is located in front of the first counterweight housing (1). The third counterweight housing (3) is connected to the turntable (4) and is distributed opposite to the second counterweight housing (2). The third counterweight housing (3) and / or the second counterweight housing (2) and / or the first counterweight housing (1) can cooperate with each other to balance the overturning moment generated by the digging device (5) of the working machine when performing digging operations. An installation space (7) for installing the component module (6) to be installed on the working machine is formed between the third counterweight housing (3), the second counterweight housing (2) and the first counterweight housing (1).

2. The counterweight device for operating machinery according to claim 1, characterized in that, The first counterweight housing (1) has a first connecting part (101) on both sides in the width direction, and the first connecting part (101) is connected to the turntable (4) by a first bolt assembly.

3. The counterweight device for working machinery according to claim 2, characterized in that, The working machinery also includes connecting plates (401) respectively disposed on both sides of the turntable (4) in the width direction. The connecting plates (401) have second connecting parts (402) distributed vertically. The second connecting parts (402) are connected to the first connecting parts (101) through the first bolt assembly.

4. The counterweight device for working machinery according to claim 1, characterized in that, The component module (6) to be installed includes a first component (601) to be installed adjacent to the front side of the first counterweight housing (1). A first contour surface (102) is formed on the side wall of the first counterweight housing (1) facing the installation space (7). The contour shape of the first contour surface (102) is consistent with the contour shape of the side wall of the first component (601) facing the first counterweight housing (1).

5. The counterweight device for working machinery according to claim 1, characterized in that, The second counterweight housing (2) is connected to the turntable (4) by a second bolt assembly, and the third counterweight housing (3) is connected to the turntable (4) by a third bolt assembly.

6. The counterweight device for working machinery according to claim 1, characterized in that, The third counterweight shell (3), the second counterweight shell (2), and the first counterweight shell (1) are all castings.

7. The counterweight device for working machinery according to claim 1, characterized in that, The component module (6) to be installed includes a second component to be installed adjacent to the side of the second counterweight housing (2) facing the installation space (7). A second contour surface (203) is formed on the side wall of the second counterweight housing (2) facing the installation space (7). The contour shape of the second contour surface (203) is consistent with the contour shape of the side wall of the second component to be installed facing the second counterweight housing (2).

8. The counterweight device for operating machinery according to claim 1, characterized in that, The module (6) to be installed includes a third component to be installed adjacent to the side of the third counterweight housing (3) facing the installation space (7). A third contour surface (301) is formed on the side wall of the third counterweight housing (3) facing the installation space (7). The contour shape of the third contour surface (301) is consistent with the contour shape of the side wall of the third component to be installed facing the third counterweight housing (3).

9. The counterweight device for working machinery according to any one of claims 1-8, characterized in that, The working machine also includes a first side panel (8) and a second side panel (9). The first side panel (8) is disposed on the front side of the second counterweight housing (2) and connected to the turntable (4). A first contact surface (801) is formed on the rear side of the first side panel (8). A second contact surface (204) for contacting the first contact surface (801) is formed on the front side of the second counterweight housing (2). The second side panel (9) is disposed on the front side of the third counterweight housing (3) and connected to the turntable (4). A third contact surface is formed on the rear side of the second side panel (9). A fourth contact surface for contacting the third contact surface is formed on the front side of the third counterweight housing (3).

10. A type of operating machinery, characterized in that, The operating machinery includes a counterweight device for the operating machinery according to any one of claims 1-9.

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