Engineering machinery counterweight mechanism and engineering machinery

Abstract

The utility model provides a counterweight mechanism for engineering machinery. The counterweight mechanism comprises a bottom counterweight assembly, a connecting assembly and a top counterweight assembly, the connecting assembly comprises a counter weight frame and a sliding frame which is installed on the counter weight frame in a sliding mode, the bottom counter weight assembly is installed at the bottom of the counter weight frame, and the top counter weight assembly is installed on the sliding frame. The utility model further provides engineering machinery which comprises a rotary table and the engineering machinery counterweight mechanism installed on the rotary table. The counterweight mechanism of the engineering machinery is simultaneously provided with the bottom counterweight assembly and the top counterweight assembly, and more counterweights can be arranged in the same space, so that the space utilization rate and the overall structural strength are improved, and the balance and stability of the engineering machinery are further maintained; in addition, the top counterweight assembly can be displaced relative to the bottom counterweight assembly through the sliding frame, so that the performance of the engineering machinery can be fully and accurately exerted.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an engineering machinery counterweight mechanism and an engineering machinery having the engineering machinery counterweight mechanism. Background Art

[0002] At present, many engineering machinery adopts a counterweight structure with a variable counterweight position. This type of counterweight structure can flexibly switch the turning radius, thereby greatly enhancing the adaptability of the engineering machinery to the work site. However, the existing counterweight structure with a variable counterweight position still has the following technical problems: the counterweight needs to be suspended under the counterweight frame, the layout space is small, and the structural strength cannot be improved; and the counterweight can usually only be stacked on both sides of the counterweight frame, and the number of counterweights that can be stacked at the same height is small; and it is impossible to combine the fixed counterweight with the variable counterweight to achieve more flexible and diverse counterweight specifications, making it difficult to give full play to the performance of engineering machinery such as cranes. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a counterweight mechanism for engineering machinery and engineering machinery, which can further improve the utilization rate of the layout space of the counterweight parts compared with the existing technology, and can combine the fixed counterweight with the variable counterweight to achieve more flexible and diverse counterweight specifications, so as to give full play to the performance of the engineering machinery.

[0004] The utility model adopts the following technical scheme, and provides a counterweight mechanism for engineering machinery, including a bottom counterweight assembly, a connecting assembly and a top counterweight assembly; the connecting assembly includes a counterweight frame and a sliding frame slidably mounted on the counterweight frame, the bottom counterweight assembly is mounted on the bottom of the counterweight frame, and the top counterweight assembly is mounted on the sliding frame.

[0005] Furthermore, the bottom counterweight assembly includes a bottom plate and at least one bottom counterweight block detachably stacked on the bottom plate, and the counterweight frame is fixed on the bottom plate.

[0006] Furthermore, there are at least two bottom counterweight blocks, which are arranged on both sides of the counterweight frame respectively.

[0007] Furthermore, the counterweight frame includes a guide rail, and the sliding frame is slidably mounted on the guide rail.

[0008] Furthermore, the connecting assembly also includes a sliding oil cylinder installed on the counterweight frame and transmission-connected to the sliding frame for driving the sliding frame to move.

[0009] Furthermore, the sliding cylinder is used to drive the sliding frame to move between the bottom counterweight blocks respectively arranged on both sides of the counterweight frame.

[0010] Further, the top counterweight assembly includes a counterweight tray mounted on the sliding frame and at least one top counterweight block detachably stacked on the tray.

[0011] Further, the length direction of the counterweight tray is parallel to the slidable direction of the sliding frame.

[0012] The utility model further provides a construction machinery, including a turntable and the above-mentioned construction machinery counterweight mechanism mounted on the turntable.

[0013] Further, the counterweight frame of the construction machinery counterweight mechanism is connected to the turntable.

[0014] The construction machinery counterweight mechanism and the construction machinery provided by the utility model are both provided with a bottom counterweight assembly and a top counterweight assembly. More counterweights can be arranged in the same space, thereby improving the utilization rate of the arrangement space of the counterweight and the overall structural strength, and further maintaining the balance and stability of the construction machinery. In addition, the top counterweight assembly can be displaced relative to the bottom counterweight assembly through the sliding frame, so that the top counterweight assembly can be used as a variable counterweight when the bottom counterweight assembly remains fixed and unchanged. The combination of the non-displaceable counterweight and the variable counterweight is used to realize more flexible and diverse counterweight specifications, and the performance of the construction machinery can be exerted more fully and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Schematic diagram of the construction machinery counterweight mechanism provided by the preferred embodiment of the present utility model from the first perspective.

[0017] Figure 2 For Figure 1 Schematic diagram of the construction machinery counterweight mechanism shown from the second perspective.

[0018] Figure 3 For Figure 1 And Figure 2 Schematic diagram of the sectional view of the construction machinery counterweight mechanism shown along the A-A line in Figure 2

[0019] Figure 4 For Figure 1 And Figure 2 Schematic diagram of the overall installation of the construction machinery counterweight mechanism shown on the turntable of the construction machinery.

[0020] ​In the figure: 1. top counterweight block; 2. counterweight tray; 3. sliding frame; 4. counterweight frame; 5. bottom counterweight assembly; 51. bottom counterweight block; 52. bottom plate; 6. turntable; 7. sliding cylinder; 8. guide rail. DETAILED DESCRIPTION

[0021] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 In one aspect, an embodiment of the present application provides a counterweight mechanism for an engineering machinery, including a bottom counterweight assembly 5, a connecting assembly and a top counterweight assembly.

[0023] The bottom weight assembly 5 includes a bottom plate 52 and at least one bottom weight block 51 detachably stacked on the bottom plate 52. In this embodiment, in order to form a symmetrical arrangement, there are at least two bottom weight blocks 51, which are stacked on the upper surface of the bottom plate 52 near both ends.

[0024] The connection assembly includes a counterweight frame 4 and a sliding frame 3 slidably mounted on the counterweight frame 4. The bottom of the counterweight frame 4 is fixed on the bottom plate 51, preferably fixed in the middle of the upper surface of the bottom plate 51, so that at least two bottom counterweight blocks 51 are respectively arranged on opposite sides of the counterweight frame 4. The side of the counterweight frame 4 exposed between the at least two bottom counterweight blocks 51 can be fixed to the turntable 6 of the engineering machinery by fasteners such as bolts. A guide rail 8 is formed on the top of the counterweight frame 4, and the sliding frame 3 is slidably mounted on the guide rail 8, so that the sliding frame 3 can slide relative to the counterweight frame 4.

[0025] The connection assembly further includes a sliding cylinder 7 disposed on the counterweight frame 4, and the sliding cylinder 7 is transmission-connected to the sliding frame 3 for driving the sliding frame 3 to move. The driving direction of the sliding cylinder 7 can be set in the same direction 8 as the guide rail. In this embodiment, the sliding cylinder 7 is preferably designed to drive the sliding frame 3 to move between the bottom counterweight blocks 51 arranged on both sides of the counterweight frame 4. In other embodiments, the sliding cylinder 7 can also be replaced by other driving mechanisms, such as a combination of a gear and a rack.

[0026] The top counterweight assembly includes a counterweight tray 2 installed on the sliding frame 3 and at least one top counterweight block 1 detachably stacked on the tray. The length direction of the counterweight tray 2 is parallel to the sliding direction of the sliding frame 3. When the sliding frame 3 is displaced along the guide rail 8, it can drive the counterweight tray 2 and the top counterweight block 1 to move relative to the counterweight frame 4 at the same time, thereby realizing the displacement of the top counterweight assembly.

[0027] The present utility model further provides a construction machinery, which includes a turntable 6 and the above-mentioned construction machinery counterweight mechanism mounted on the turntable 6; the counterweight frame 4 of the above-mentioned construction machinery counterweight mechanism is fixedly connected to the turntable 6 through fasteners such as bolts.

[0028] For the construction machinery counterweight mechanism and the construction machinery provided by the present utility model, the sliding frame 3 is arranged above the counterweight frame 4, making the installation of the top counterweight assembly more stable. Meanwhile, both a bottom counterweight assembly 5 and a top counterweight assembly are provided, enabling more counterweights to be arranged within the same space, improving the space utilization rate and making the overall structural strength higher; the bottom counterweight blocks 51 and the top counterweight blocks 1 are respectively detachably stacked on the bottom plate 52 and the counterweight tray 2. By increasing or decreasing the stacking quantity of the bottom counterweight blocks 51 and the top counterweight blocks 1, the total weight of the top counterweight and the bottom counterweight can be changed. Therefore, the balance and stability of the machinery can be further maintained. Additionally, the top counterweight assembly can be displaced relative to the bottom counterweight assembly 5 through the sliding frame 3, so that the top counterweight assembly can be used as a variable-position counterweight while the bottom counterweight assembly 5 remains fixed and unchanged. By combining the non-displaceable counterweight with the variable-position counterweight, more flexible and diverse counterweight specifications can be achieved, and the performance of the construction machinery can be more fully and precisely exerted.

[0029] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A counterweight mechanism for engineering machinery, characterized in that: It includes a bottom counterweight assembly, a connecting assembly and a top counterweight assembly; the connecting assembly includes a counterweight frame and a sliding frame slidably mounted on the counterweight frame, the bottom counterweight assembly is mounted on the bottom of the counterweight frame, and the top counterweight assembly is mounted on the sliding frame.

2. The counterweight mechanism according to claim 1, characterized in that: The bottom counterweight assembly comprises a bottom plate and at least one bottom counterweight block detachably stacked on the bottom plate, and the counterweight frame is fixed on the bottom plate.

3. The counterweight mechanism according to claim 2, characterized in that: The number of the bottom counterweight blocks is at least two, which are arranged on both sides of the counterweight frame respectively.

4. The counterweight mechanism according to claim 3, characterized in that: The counterweight frame comprises a guide rail, and the sliding frame is slidably mounted on the guide rail.

5. The counterweight mechanism according to claim 4, characterized in that: The connecting assembly also includes a sliding oil cylinder installed on the counterweight frame and drivingly connected to the sliding frame for driving the sliding frame to move.

6. The counterweight mechanism according to claim 5, characterized in that: The sliding oil cylinder is used to drive the sliding frame to move between the bottom counterweight blocks respectively arranged on both sides of the counterweight frame.

7. The counterweight mechanism according to claim 1, characterized in that: The top counterweight assembly includes a counterweight tray mounted on the sliding frame and at least one top counterweight block detachably stacked on the tray.

8. The counterweight mechanism according to claim 7, characterized in that: The length direction of the counterweight tray is parallel to the slidable direction of the sliding frame.

9. An engineering machine, characterized in that: The invention comprises a turntable and an engineering machinery counterweight mechanism as claimed in any one of claims 1 to 8 installed on the turntable.

10. The construction machine according to claim 9, characterized in that: The counterweight frame of the engineering machinery counterweight mechanism is connected to the turntable.

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