Half-wrapping edge-covering type vehicle body weight for crawler crane

Abstract

The utility model discloses a semi-wrapping edge-covering type vehicle body weight for a crawler crane, which belongs to the technical field of balancing weights of crawler cranes and comprises an upper edge-covering part and a lower surrounding part, solid fillers are arranged in the upper edge-covering part and the lower surrounding part, the lower surrounding part is of an upper opening structure, the surrounding type lower part comprises a bottom plate, and side surrounding plates are arranged on the periphery of the bottom plate. The upper edge covering part comprises a bent plate, the bent plate is arranged above the connecting position of the two adjacent side surrounding plates, angle steel is arranged between the two adjacent bent plates, an opening of the angle steel faces inwards, a flat plate is arranged at the upper end of the bent plate, the vertical edge of the angle steel is connected with the bent plate, and the transverse edge of the angle steel is connected with the flat plate. The balancing weight is suitable for the crawler crane, the area of a steel shell can be reduced, the steel proportion is reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to a half-wrapped side-wrapped body counterweight for a crawler crane, belonging to the technical field of counterweight blocks for crawler cranes. Background Art

[0002] Crawler cranes are an important category of lifting machinery, boasting advantages such as high lifting performance, load-carrying travel, and adaptability to complex environments. Therefore, they play a vital role in infrastructure construction, wind power construction, nuclear power construction, and petrochemical construction. Counterweights, a device that increases the lifting weight and lifting torque of crawler cranes, have a direct impact on the lifting performance of the entire machine and cannot be reduced arbitrarily. The current crane market is driven by sales volume and price competition, making it crucial to reduce manufacturing costs. Each product and component is being meticulously designed to reduce costs, and reducing counterweight costs plays a crucial role in optimizing overall machine costs. Counterweights have evolved from steel plates, cast iron, and filled types, with costs decreasing step by step. Further reductions in the cost of filled counterweights require technological breakthroughs.

[0003] like Figure 2 As shown in the figure, due to the positional relationship with the frame, most of the vehicle body counterweights are placed between the two track beams, mainly under the action of their own gravity, where A is the chassis and B is the fully enclosed vehicle body counterweight. Figure 3 As shown, the existing filling-type counterweight block has the following structure: long strip, with six sides all made of steel plates, and internal stiffeners added according to force analysis, that is, the shell cavity is composed of six steel plates and internal stiffeners, and the interior of the cavity is filled with semi-fluid fillers or solid fillers. Fillers have different costs due to different densities. Currently, the most cost-effective filler is filled concrete, but concrete has a low density. In order to ensure weight requirements, the counterweight block needs to be large, and the steel plate area needs to be increased. Therefore, there is a contradiction between the increase in steel plate cost and the reduction in filler cost. The current way to deal with this contradiction is to reduce the amount of steel plate used by reducing the thickness of the steel plate. However, after the thickness of the steel plate is reduced to a certain extent, it is limited by the load and manufacturing process and cannot be further reduced. Therefore, the existing fully enclosed shell and filler-added filling-type counterweight block has the defects of a large steel shell area, a high proportion of steel, and a high cost. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the existing technology and provide a semi-wrapped side-wrapped body weight for a crawler crane, which can reduce the area of ​​the steel shell, reduce the proportion of steel, and achieve cost reduction.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A crawler crane is provided with a semi-wrapped body weight, comprising an upper edging portion and a lower enclosing portion, wherein solid fillers are arranged in the upper edging portion and the lower enclosing portion, and the lower enclosing portion is an upper opening structure, and the enclosed lower portion comprises a bottom plate, and side panels are arranged on all four sides of the bottom plate, and the upper edging portion comprises a bent plate, and the bent plate is arranged above the connection position of two adjacent side panels, and an angle steel is arranged between two adjacent bent plates, and the opening of the angle steel is arranged inward, and a flat plate is provided at the upper end of the bent plate, the vertical edge of the angle steel is connected to the bent plate, and the horizontal edge of the angle steel is connected to the flat plate.

[0007] Two adjacent side panels are connected via an arc portion.

[0008] The upper edging portion and the lower surrounding portion are both in the shape of a cuboid.

[0009] An internal rib is provided in the lower enclosure portion parallel to its width direction, and a hanging point is provided on the outer side of the side enclosure, wherein the hanging point is located at a contact position between the internal rib and the side enclosure.

[0010] The internal ribs and the side panels, as well as the hanging points and the side panels are connected by welding.

[0011] The number of the internal ribs is two, and the number of the hanging points is four.

[0012] The angle steel and the flat plate are connected by welding.

[0013] The angle steel is connected to the bent plate and the flat plate by welding.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a semi-wrapped edging type body weight for a crawler crane, comprising an upper edging portion and a lower surrounding portion, the upper edging portion comprising a bent plate, the bent plate being arranged above the connection position of two adjacent side panels, an angle steel being arranged between the two adjacent bent plates, the angle steel opening being arranged inward, a flat plate being arranged at the upper end of the bent plate, and an edging structure being introduced on the basis of the existing filling-type counterweight block to replace the original integral sealing structure, which can greatly reduce the amount of plate shell used, reduce the proportion of plate, and reduce cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a crawler crane with a half-wrapped side-wrapped body weight;

[0016] Figure 2 This is a schematic diagram of the installation position structure of the vehicle body weight in the prior art;

[0017] Figure 3 It is a structural diagram of a vehicle body weight in the prior art.

[0018] The reference numerals in the figure are as follows: 1-side panel; 2-internal rib plate; 3-hanging point; 4-bent plate; 5-angle steel; 6-flat plate; 7-bottom plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] Example 1

[0021] Figure 2 The installation method of the middle body counterweight determines that the bottom of the body counterweight is the main force point, and is affected by its own gravity and the impact force during walking, while the upper part is less stressed and basically plays a protective role. According to this actual force characteristic, the utility model optimizes the form of the upper shell, specifically as follows Figure 1 As shown, the utility model discloses a semi-wrapped body weight for a crawler crane, comprising an upper rim and a lower enclosure, each of which contains solid fillers. The lower enclosure is an open-top structure, and the enclosure-type lower portion comprises a bottom plate 7, surrounded by side panels 1. An internal rib 2 is provided within the lower enclosure parallel to its width, and a hanging point 3 is provided on the outside of the side panels 1. The hanging point 3 is located at the contact point between the internal rib 2 and the side panels 1. The design of the hanging point 3 is mainly based on force analysis.

[0022] The upper hemming portion includes a bent plate 4, which is arranged above the connection position of two adjacent side panels 1. An angle steel 5 is arranged between the two adjacent bent plates 4, with the opening of the angle steel 5 facing inward. A flat plate 6 is arranged on the upper end of the bent plate 4. The vertical edge of the angle steel 5 is connected to the bent plate 4, and the horizontal edge of the angle steel 5 is connected to the flat plate 6. The upper hemming portion plays a role in protecting the edges and corners from damage. Its size design mainly depends on the commonly used size specifications of the angle steel 5, and the size of the bent plate 4 and the flat plate 6 is designed accordingly.

[0023] The utility model improves the upper part of the vehicle body counterweight to be designed with angle steel, bent plate and flat plate edging, which can prevent the corners of the counterweight from being damaged by collision during transportation. In addition, it can greatly reduce the amount of plate material used, reduce the proportion of plate materials, and achieve cost reduction.

[0024] Example 2

[0025] like Figure 3 As shown, the utility model discloses a semi-enclosed body weight for a crawler crane, comprising an upper edging portion and a lower enclosing portion, both of which are rectangular. Solid fillers such as concrete are provided in the upper edging portion and the lower enclosing portion.

[0026] The lower enclosure is an open-top structure. The enclosed lower portion includes a base plate 7, surrounded by side panels 1. Adjacent side panels 1 are connected by curved sections. Internal ribs 2 are installed within the lower enclosure, parallel to its width. Hanging points 3 are located on the outside of the side panels 1, located at the point of contact between the internal ribs 2 and the side panels 1. The internal ribs 2 and the side panels 1, as well as the hanging points 3 and the side panels 1, are welded together. There are two internal ribs 2 and four hanging points 3.

[0027] The upper edging portion includes a bent plate 4, which is positioned above the connection between two adjacent side panels 1 and is welded to the side panels 1. An angle steel 5 is positioned between the two adjacent bent plates 4, with its opening facing inward. A flat plate 6 is positioned above the bent plate 4, with its vertical edges connected to the bent plate 4 and its horizontal edges connected to the flat plate 6. The angle steel 5 is welded to the flat plate 6. The angle steel 5 is also welded to both the bent plate 4 and the flat plate 6.

[0028] The utility model introduces an edge-wrapped structure on the basis of the existing filling-type counterweight block, replacing the original overall sealing structure, which can greatly reduce the amount of plate shell used, reduce the proportion of plate, and reduce costs.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A crawler crane with a half-wrapped body weight, characterized in that: The invention comprises an upper edging portion and a lower surrounding portion, wherein solid fillers are arranged in the upper edging portion and the lower surrounding portion, wherein the lower surrounding portion is an upper opening structure, wherein the lower surrounding portion comprises a bottom plate (7), wherein side panels (1) are arranged on all sides of the bottom plate (7), wherein the upper edging portion comprises a bent plate (4), wherein the bent plate (4) is arranged above the connection position of two adjacent side panels (1), wherein an angle steel (5) is arranged between two adjacent bent plates (4), wherein the opening of the angle steel (5) is arranged inwardly, wherein a flat plate (6) is arranged at the upper end of the bent plate (4), wherein the vertical edge of the angle steel (5) is connected to the bent plate (4), and the horizontal edge of the angle steel (5) is connected to the flat plate (6).

2. The half-wrapped body weight for a crawler crane according to claim 1, characterized in that: Two adjacent side panels (1) are connected via an arc portion.

3. The half-wrapped body weight for a crawler crane according to claim 1, characterized in that: The upper edging portion and the lower surrounding portion arranged above and below are both in the shape of a rectangular parallelepiped.

4. The half-wrapped body weight for a crawler crane according to claim 3, characterized in that: An internal rib plate (2) is arranged in the lower enclosure portion parallel to the width direction thereof, and a hanging point (3) is arranged on the outside of the side enclosure plate (1), wherein the hanging point (3) is located at a contact position between the internal rib plate (2) and the side enclosure plate (1).

5. The half-wrapped body weight for a crawler crane according to claim 4, characterized in that: The internal rib plate (2) and the side panel (1), as well as the hanging point (3) and the side panel (1) are connected by welding.

6. The half-wrapped body weight for a crawler crane according to claim 4, characterized in that: The number of the internal ribs (2) is two, and the number of the hanging points (3) is four.

7. The half-wrapped body weight for a crawler crane according to claim 1, characterized in that: The angle steel (5) and the flat plate (6) are connected by welding.

8. The half-wrapped body weight for a crawler crane according to claim 1, characterized in that: The angle steel (5) is connected to the bent plate (4) and the flat plate (6) by welding.

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