Combined superlift counterweight tray of crane

Abstract

The utility model relates to a combined superlift counterweight tray of a crane. The combined superlift counterweight tray comprises a main tray (6), suspension trays (1) symmetrically hinged to the left end and the right end of the main tray (6), and a small tray (2) arranged at the top of the main tray (6), the main tray (6) is hinged with the small tray (2) through a connecting pull plate (3); and balancing weights (7) are sequentially stacked on the suspension tray (1) and the small tray (2). According to the combined type super-lift counterweight tray of the crane, the purposes of increasing the bearing and placing area of the super-lift counterweight tray and improving the placing and containing capacity of the counterweight blocks can be achieved on the premise of avoiding the risks of super-wide, super-long and super-heavy transportation and meeting the requirements of transportation road regulations.

Description

Technical Field

[0001] This utility model relates to a combined super-lift counterbalance pallet for cranes, belonging to the field of crane technology. Background Technology

[0002] Ultra-heavy-duty crawler cranes require a large number of super-lift counterweights to ensure normal operation. The counterweights balance the weight of the crane boom and the load, achieving system equilibrium and ensuring the stability and safety of the lifted items. The selection of counterweights is crucial; improper counterweight placement can severely impact the crane's normal operation and use. Super-lift counterweights are placed at the rear of the crane to increase its lifting capacity and torque. The super-lift counterweight tray is the platform on the crane where these counterweights are placed.

[0003] As my country's new energy construction and other projects grow in scale, the demand for lifting capacity of large-tonnage cranes is increasing, necessitating even larger crawler cranes. This inevitably leads to an increase in the weight and size of the counterweight. However, due to national road regulations and truck load limits, standalone integrated superlift counterweight pallets have limited placement area and counterweight capacity, making them increasingly unsuitable for current needs. Most existing superlift counterweight pallets are welded from steel plates, forming a non-detachable, integral structure. The dimensions and weight of these pallets are restricted by road transport regulations, limiting the counterweight placement area and space. Increasing the pallet's dimensions poses risks of exceeding width, length, and weight limits, thus creating a need for developing modular superlift counterweight pallets with larger load-bearing capacity. Summary of the Invention

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a crane combination super-lift counterbalance pallet, which can increase the load-bearing area of ​​the super-lift counterbalance pallet and increase the capacity of counterbalance blocks while avoiding the risks of transporting oversized, overlength and overweight items and meeting the restrictions of transportation road regulations.

[0005] The purpose of this utility model is achieved as follows:

[0006] A crane combination super-lift counterbalance pallet includes a main pallet, suspension pallets symmetrically hinged to the left and right ends of the main pallet, and a small pallet set on the top of the main pallet; the main pallet and the small pallet are hinged together by a connecting plate; counterbalance blocks are stacked sequentially on the suspension pallet and the small pallet.

[0007] Furthermore, two sets of mounting plates are symmetrically fixed at the left and right ends of the main tray, and two hinge points are provided on each mounting plate, which are used to hinge the suspension tray and the connecting pull plate respectively.

[0008] Furthermore, the suspension tray and connecting pull plate are all hinged to the mounting plate via pins.

[0009] Furthermore, the bottom contact areas of the suspended tray and the main tray are provided with compression surfaces for resistant pressure contact.

[0010] Furthermore, a bracket is provided above the main tray, and a lifting cylinder is installed on the top of the bracket.

[0011] Furthermore, the bottom of the bracket is hinged to the hinge point connecting the pull plate and the small tray.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model features a movable combination structure with a small pallet hinged above the main pallet and a suspended pallet hinged at both ends. During transportation, the suspended pallets on both sides can be folded up or removed to meet the requirements of road transport regulations, ensuring that the width, length, and weight do not exceed the limits. When the crane is lifting the load, the suspended pallets can be unfolded to increase the load-bearing area of ​​the counterweight pallet and improve the capacity of the counterweight blocks. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of a crane combination super-lift counterbalance tray according to the present invention.

[0015] Figure 2 This is a front view of a crane combination super-lift counterbalance tray according to the present invention.

[0016] Figure 3 This is a partial enlarged view of a crane combination superlift counterbalance tray according to the present invention.

[0017] Figure 4 This is a partial enlarged view of a crane combination super-lift counterbalance tray according to the present invention.

[0018] Figure 5 This is a three-dimensional view of the working state of a crane combination super-lift counterbalance tray according to the present invention.

[0019] Figure 6 This is a front view of the working state of a combined super-lift counterbalance pallet for cranes according to this utility model.

[0020] in:

[0021] 1. Suspended pallet; 2. Small pallet; 3. Connecting pull plate; 4. Lifting cylinder; 5. Bracket; 6. Main pallet; 7. Counterweight; 8. Mounting plate; 9. Extrusion surface; 10. Pin shaft. Detailed Implementation

[0022] See Figures 1-6This utility model relates to a crane combination super-lift counterbalance pallet, comprising a main pallet 6, suspension pallets 1 symmetrically hinged to the left and right ends of the main pallet 6, and a small pallet 2 set on the top of the main pallet 6; the main pallet 6 and the small pallet 2 are hingedly connected by a connecting pull plate 3; specifically, two sets of mounting plates 8 are symmetrically fixed at the left and right ends of the main pallet 6, and two hinge points are provided on each mounting plate 8, which are respectively used to hinge the suspension pallet 1 and the connecting pull plate 3, and the suspension pallet 1 and the connecting pull plate 3 are all hinged to the mounting plate 8 by a pin 10;

[0023] By rotating the hinge point between the suspension tray 1 and the mounting plate 8, the bottoms of the suspension tray 1 and the main tray 6 come into contact with each other, and the contact area is provided with a pressing surface 9 for cooperating and resisting pressure contact to ensure stable and reliable contact; in this embodiment, the pressing surface 9 is a steel plate that is welded to the bottom of the suspension tray 1 and the main tray 6 respectively and is in planar contact.

[0024] A support 5 is installed above the main pallet 6. A lifting cylinder 4 is installed on the top of the support 5. The bottom of the support 5 is hinged to the hinge point connecting the pull plate 3 and the small pallet 2. During hoisting, the suspended pallet 1 is unfolded around the hinge point and laid flat. The bottom pressing surface 9 is in contact with the pallet to maintain stability. Then, counterweights 7 are stacked on the suspended pallet 1 and the small pallet 2 in sequence to complete the counterweight. During transportation, the suspended pallet 1 can be folded up to meet the restrictions of transportation road regulations.

[0025] This utility model features a movable combination structure with a small pallet 2 hinged above the main pallet 6 and a suspended pallet 1 hinged at both ends. During transportation, the suspended pallets 1 on both sides can be folded up or removed to meet the requirements of road transport regulations, ensuring that the width, length, and weight do not exceed the limits. When the crane is lifting the load, the suspended pallets 1 can be unfolded to increase the load-bearing area of ​​the counterweight pallet and improve the capacity of the counterweight blocks.

[0026] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A crane combination super-lift counterbalance pallet, characterized in that: It includes a main pallet (6), a suspended pallet (1) symmetrically hinged to the left and right ends of the main pallet (6), and a small pallet (2) set on the top of the main pallet (6); the main pallet (6) and the small pallet (2) are hinged together by a connecting pull plate (3); and counterweights (7) are stacked on the suspended pallet (1) and the small pallet (2) in sequence.

2. The crane combination super-lift counterbalance pallet according to claim 1, characterized in that: The main tray (6) has two sets of mounting plates (8) symmetrically fixed at its left and right ends. Each mounting plate (8) has two hinge points, which are used to hinge the suspension tray (1) and the connecting pull plate (3) respectively.

3. The crane combination super-lift counterbalance pallet according to claim 2, characterized in that: The suspension tray (1) and connecting pull plate (3) are all hinged to the mounting plate (8) by a pin (10).

4. The crane combination super-lift counterbalance pallet according to claim 1, characterized in that: The bottom contact area of ​​the suspended tray (1) and the main tray (6) is provided with a compression surface (9) for cooperating and resisting pressure contact.

5. The crane combination super-lift counterbalance pallet according to claim 1, characterized in that: A bracket (5) is provided above the main tray (6), and a lifting cylinder (4) is installed on the top of the bracket (5).

6. The crane combination super-lift counterbalance pallet according to claim 5, characterized in that: The bottom of the bracket (5) is hinged to the hinge point of the connecting pull plate (3) and the small tray (2).

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