Center barrel structure of open type multi-petal grab bucket

Abstract

Compared with an existing barrel structure, the center barrel structure of the open type multi-petal grab bucket has the advantages that on the basis that the strength of the barrel is guaranteed, not only is the weight of the barrel reduced, but also the internal space is enlarged, so that all parts of a hydraulic station can be arranged on the upper surface of an oil tank; a gap between every two adjacent support connecting pieces can serve as an access hole, all parts of the hydraulic station can be overhauled or taken out through the access holes, convenience is provided for overhauling of the hydraulic station, meanwhile, due to the fact that an installation structure used for detachably fixing an oil tank of the hydraulic station is designed on the lower support, the hydraulic station can be overall lifted out, and the hydraulic station is convenient to use. On-site maintenance is realized, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grab buckets, and particularly relates to an open multi-petal grab bucket central cylinder structure. Background Art

[0002] An electro-hydraulic multi-petal grab bucket is a mechanism for grabbing materials, and is widely used in places such as steel mills, power plants, and waste treatment plants. This grab bucket can grab irregularly shaped materials such as scrap steel, steel slag, and garbage, and has the advantages of high grabbing efficiency and good grabbing effect.

[0003] An electro-hydraulic multi-petal grab bucket usually consists of a central cylinder, multiple bucket petals, multiple oil cylinders, and a hydraulic station. Each bucket petal is driven by an independent oil cylinder, and each oil cylinder is supplied with oil by the hydraulic station inside the central cylinder.

[0004] In order to ensure the strength of the central cylinder, the circumferential surface of the existing cylinder is a closed structure, resulting in a relatively large weight of the central cylinder. Therefore, in order to reduce the weight, the size of the cylinder is usually designed to be smaller, resulting in a smaller internal space. Therefore, the fuel tank of the hydraulic station is usually directly welded to the central cylinder, and other components are scattered and fixed inside the central cylinder. In particular, the hydraulic pump is often immersed in the hydraulic oil of the fuel tank. Since only a small maintenance opening is left on the circumferential surface of the existing cylinder, it is difficult to repair the scattered components of the hydraulic station. At the same time, the hydraulic station cannot be lifted out as a whole for maintenance. Even if components such as the hydraulic pump and motor are lifted out, it is still necessary to go to the maintenance station to cooperate with the fuel tank in the station for maintenance, and the efficiency is relatively low. Content of the Utility Model

[0005] Based on this, in view of the above technical problems, an open multi-petal grab bucket central cylinder structure is provided.

[0006] The technical solution adopted by the utility model is as follows:

[0007] An open multi-petal grab bucket central cylinder structure, characterized in that it includes an upper bracket, a lower bracket arranged below the upper bracket, and a plurality of bracket connectors corresponding to the bucket petals and oil cylinders of the multi-petal grab bucket one by one. A lifting opening is formed on the upper bracket, an installation structure for detachably fixing the hydraulic station fuel tank is formed on the lower bracket, the plurality of bracket connectors are uniformly arranged around the upper bracket and the lower bracket, and the upper and lower parts of the bracket connectors are respectively connected to the upper bracket and the lower bracket.

[0008] The open multi - flap grab center cylinder structure provided by the present utility model, compared with the existing cylinder structure, on the basis of ensuring the strength of the cylinder, not only reduces the weight of the cylinder, but also increases the internal space, enabling each component of the hydraulic station to be arranged on the upper surface of the fuel tank. Moreover, the gaps between adjacent bracket connectors can all serve as maintenance openings through which each component of the hydraulic station can be maintained or the components can be taken out, providing convenience for the maintenance of the hydraulic station. At the same time, since an installation structure for detachably fixing the fuel tank of the hydraulic station is designed on the lower bracket, the entire hydraulic station can also be lifted out for on - site maintenance, improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present utility model will be described in detail below with reference to the drawings and specific embodiments:

[0010] Figure 1 FIG. is a three - dimensional structure schematic diagram of an open multi - flap grab center cylinder structure provided by an embodiment of the present utility model;

[0011] Figure 2 FIG. is a side - view structure schematic diagram of an open multi - flap grab center cylinder structure provided by an embodiment of the present utility model. SPECIFIC EMBODIMENTS

[0012] The following will describe the embodiments of the present utility model with reference to the accompanying drawings of the specification. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of the present utility model. The following corresponding embodiments are only for clearly explaining the inventive content of the utility model patent of the present utility model, and do not limit its embodiments. For those of ordinary skill in the art, different forms of changes and modifications can be made on the basis of the description of this embodiment. Any changes or modifications that belong to the technical concept and inventive content of the present utility model and are obvious are also within the protection scope of the present utility model.

[0013] As Figure 1 shown, an embodiment of the present application provides an open multi - flap grab center cylinder structure, including an upper bracket 1110, a lower bracket 1120, and six bracket connectors 1130.

[0014] Both the upper bracket 1110 and the lower bracket 1120 are circular rings.

[0015] The inner hole of the upper bracket 1110 serves as a lifting outlet, and a sling hole 1111 is provided on the upper bracket 1110 for installing a sling.

[0016] The lower bracket 1120 is arranged below the upper bracket 1110. Its inner hole serves as an embedded installation hole for the fuel tank of the hydraulic station. The upper hole - edge of this hole has a plurality of bolt holes 1121, serving as an installation structure for detachably fixing the fuel tank.

[0017] To facilitate the installation of the fuel tank, the inner hole wall of the lower bracket 1120 has a positioning groove 1122 adapted to the positioning blocks on the circumferential surface of the fuel tank.

[0018] The six bracket connectors 1130 correspond one-to-one with the six bucket petals and six oil cylinders of the multi-petal grab, and the six bracket connectors 1130 are evenly arranged around the upper bracket 1110 and the lower bracket 1120.

[0019] As Figure 1 and Figure 2 shown, the bracket connector 1130 includes two connecting plates 1131 arranged at intervals left and right. There is a connecting rib 1132 between the two connecting plates 1131. The upper and lower ends of the connecting plates 1131 are respectively connected to the outer circumferential surfaces of the upper bracket 1110 and the lower bracket 1120. The upper and lower ends of the connecting plates 1131 both have hinge holes 1131a for hinging the corresponding bucket petals and oil cylinders.

[0020] Among them, the gaps between adjacent bracket connectors 1130 can all be used as maintenance openings.

[0021] Compared with the existing cylinder structure, the structure of the above-mentioned central cylinder 1100 not only reduces the weight of the cylinder but also increases the internal space while ensuring the strength of the cylinder.

[0022] To further increase the internal space, the connecting plate 1131 is designed to consist of an upper section 1131a that slopes radially outward from top to bottom and a lower section 1131b that slopes radially inward from top to bottom. See Figure 1 .

[0023] As can be seen from the above, compared with the existing cylinder structure, the open multi-petal grab central cylinder structure provided by the embodiment of the present application not only reduces the weight of the cylinder but also increases the internal space while ensuring the strength of the cylinder, enabling the components of the hydraulic station to be arranged on the upper surface of the fuel tank. Moreover, the gaps between adjacent bracket connectors can all be used as maintenance openings, through which the components of the hydraulic station can be maintained or the components can be taken out, providing convenience for the maintenance of the hydraulic station. At the same time, since the lower bracket is designed with an installation structure for detachably fixing the fuel tank of the hydraulic station, the entire hydraulic station can also be lifted out for on-site maintenance, improving the efficiency.

[0024] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. An open multi-lobe grab central cylinder structure, characterized in that, It includes an upper bracket, a lower bracket arranged below the upper bracket, and a plurality of bracket connectors corresponding one by one to the bucket petals and oil cylinders of the multi-valve grab. A lifting outlet is formed on the upper bracket, and an installation structure for detachably fixing a hydraulic station fuel tank is formed on the lower bracket. The plurality of bracket connectors are uniformly arranged around the upper bracket and the lower bracket, and the upper and lower parts of the bracket connectors are respectively connected to the upper bracket and the lower bracket.

2. The central cylinder structure of an open multi-lobe grab according to claim 1, characterized in that, Both the upper bracket and the lower bracket are annular. The inner hole of the upper bracket serves as the lifting outlet, and the inner hole of the lower bracket serves as the embedding installation hole for the fuel tank. The upper and lower parts of the bracket connectors are respectively connected to the outer peripheral surfaces of the upper bracket and the lower bracket.

3. An open multi-lobe grab central cylinder structure according to claim 2, characterized in that, The installation structure is a plurality of bolt holes formed at the edge of the upper orifice of the inner hole of the lower bracket.

4. An open multi-lobe grab center cylinder structure according to claim 2, characterized in that, The inner hole wall of the lower bracket has a positioning groove adapted to the positioning blocks on the circumferential surface of the fuel tank.

5. An open multi-lobe grab center cylinder structure according to claim 2, characterized in that, The bracket connector includes two connecting plates arranged at intervals left and right. There is a connecting rib between the two connecting plates. The upper and lower ends of the connecting plates are respectively connected to the outer peripheral surfaces of the upper bracket and the lower bracket. The upper and lower ends of the connecting plates both have hinge holes.

6. An open multi-lobe grab central cylinder structure according to claim 5, characterized in that The connecting plate is composed of an upper section inclined radially outward from top to bottom and a lower section inclined radially inward from top to bottom.

7. An open multi-lobe grab central cylinder structure according to claim 1, characterized in that The upper bracket has sling holes.

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