Patent ID: 12221796

Wherein the correspondence between the reference numbers and the part names inFIGS.1to11is as follows:1: boom;10: body;100: first body portion;1000: first horizontal plate;1002: first side plate;1004: second side plate;102: second body portion;1020: second horizontal plate;1022: third side plate;1024: fourth side plate;104: limiting portion;1040: overlapping step;1042: overlapping plate;12: first connecting portion;120: mounting hole;14: second connecting portion;16: support seat;160: connecting hole;2: boom assembly;20: first boom;3: work machine;30: boom support structure.

DETAILED DESCRIPTION OF THE DISCLOSURE

In order that the above-mentioned objectives, features and advantages of the present disclosure can be understood more clearly, a further detailed description of the present disclosure will be given below in connection with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can also be implemented in other manners than those described herein. Therefore, the protection scope of the present disclosure is not limited to the specific embodiments disclosed below.

Some embodiments of the present disclosure are described below with reference toFIGS.1to11.

As shown inFIGS.1to5, an embodiment of the present disclosure provides a boom1, comprising a box-type structure, wherein the boom1comprises: a body10comprising a first body portion100and a second body portion102, the first body portion100and the second body portion102enclosing to form the box-type structure, wherein, the first body portion100and the second body portion102overlap each other.

In this embodiment, the first body portion100and the second body portion102overlap each other, that is, the first body portion100and the second body portion102are of a split structure. The two are connected together in an overlapping manner, the first body portion100and the second body portion102may be formed separately and then assembled together. The split structure is beneficial to greatly simplify the mold for production and improve the versatility of the mold. When the structure of the boom is changed, it is not necessary to adjust the mold every time, which is beneficial to shorten the development time and improve the production efficiency in the early stage, and facilitate the batch production of the boom. In addition, when damage such as knock occurs to one of the first body portion100and the second body portion102using the split structure, only one of the damaged body needs to be replaced, and not all of the body10needs to be replaced, which is advantageous in saving materials and reducing waste.

Furthermore, the first body portion100and the second body portion102overlap each other, which is advantageous in that they can be fixed by means of mechanical connection or the like without heat processing. That is, when the first body portion100and the second body portion102are fixedly connected to each other, there is no thermal processing, and it is advantageous to reduce thermal deformation or high-temperature damage of both. Therefore, the first body portion and the second body portion can use a relatively light and thin structure corresponding to the connection mode of the non-thermal processing, thereby facilitating the weight reduction of the boom and achieving the purpose of light weight reduction of the boom. The overlapping manner also allows the first body portion100and the second body portion102to have a small amount of inconsistent deformation, that is, different material bodies can be used for the first body portion100and the second body portion102, which is beneficial to improve the convenience of material selection for the first body portion100and the second body portion102.

As shown inFIG.2, in the above-mentioned embodiments, both sides of the second body portion102are provided with a limiting portion104, and the first body portion100and the second body portion102abut through the limiting portion104.

In particular, the first body portion100comprises a first horizontal plate1000, a first side plate1002and a second side plate1004which are integrally formed, the first side plate1002and the second side plate1004are respectively located at two sides of the first horizontal plate1000, the first side plate1002, the first horizontal plate1000, and the second side plate1004form a U-shaped structure, and the second body portion102comprises a second horizontal plate1020, a third side plate1022and a fourth side plate1024which are integrally formed, the third side plate1022and the fourth side plate1024are respectively located at two sides of the second horizontal plate1020, and the third side plate1022, the second horizontal plate1020and the fourth side plate1024form a U-shaped structure, wherein, the first side plate1002and the third side plate1022overlap each other, the second side plate1004and the fourth side plate1024overlap each other. One limiting portion104is provided on both sides of the second body portion102, that is, the third side plate1022and the fourth side plate1024, respectively.

Furthermore, the third side plate1022and the fourth side plate1024are respectively provided with the limiting portion104, and the limiting portion104comprises an overlapping step1040and an overlapping plate1042, the overlapping step1040of the third side plate1022abuts the first side plate1002, the overlapping step1040of the fourth side plate1024abuts the second side plate1004, the overlapping plate1042of the third side plate1022and the first side plate1002overlap each other, and the overlapping plate1042of the fourth side plate1024and the second side plate1004overlap each other.

In this embodiment, the first body portion100and the second body portion102are abutted by the limiting portion104, so that the overlapping length of the two can be stably and reliably limited. That is, when overlapping is performed, the overlapping length of the two is fixed by the limiting action of the limiting portion104, and at which position the overlapping step1040of the limiting portion104is set, the overlapping length can be brought to which position. The limiting portion104can also play a role of positioning. When the first body portion100and the second body portion102are connected by bolting, riveting, etc., positioning is performed through the limiting portion104, so as to facilitate the alignment of hole positions and save assembly time. In addition, the limiting portion can also reduce the shearing force on the first body portion100and the second body portion102, so as to improve the stability and reliability of both operations.

As shown inFIG.2, more specifically, the first body portion100and the second body portion102have a U-shaped cross-section, respectively. During assembly, the U-shaped first body portion100and the U-shaped second body portion102are interlocked and lapped to form a box-shaped body10. This is convenient to manufacture and assemble, and has high assembly efficiency, and when one of the first body portion100and the second body portion102is damaged, the damaged one can be replaced.

As shown inFIG.9, in other embodiments, only one side of the second body portion102is provided with a limiting portion104, that is, only the third side plate1022of the second body portion102is provided with a limiting portion104.

As shown inFIG.10, in further other embodiments, one side of the first body portion100and one side of the second body portion102are respectively provided with a limiting portion104. Specifically, the second side plate1004of the first body portion100is provided with a limiting portion104, and the third side plate1022of the second body portion102is provided with a limiting portion104.

As shown inFIGS.9and10, the overlapping plate1042of the limiting portion104on the third side plate1022and the third side plate1022are not coplanar, but are parallel to each other.

As shown inFIG.11, in some embodiments, the overlapping plate1042of the limiting portion104is coplanar with the corresponding side plate, for example, the overlapping plate1042on the limiting portion104of the third side plate1022is coplanar with the third side plate1022itself. The overlapping step1040projects from one side of corresponding side plate to another side, resembling a protruding platform.

In any one of the above-mentioned embodiments, the first body portion100and the second body portion102are mechanically connected and bonded, and such a connection manner does not require heating; when connecting and fixing, there is no high temperature, and the first connecting portion12and the second connecting portion14are not thermally deformed, which is advantageous for the first body portion100and the second body portion102to use a relatively light and thin structure, thereby achieving the purpose of light weight of the body10. Furthermore, the simultaneous use of mechanical connection and adhesive connection, can achieve the purpose of being removable between the first connecting portion12and the second body portion102, so that in case of damage, it is easy to replace and maintain, avoiding the replacement of all the body10, which is beneficial to saving materials. The mechanical connection includes but is not limited to bolting, riveting, and snapping.

In any one of the above-mentioned embodiments, the first body portion100uses carbon fiber material body which can increase the strength of the boom1and reduce the weight of the boom1, thereby reducing the power required to drive the boom1and facilitating energy savings.

In some embodiments, the first body portion100and the second body portion102, that is, the body10is entirely made of carbon fiber material body. The body10is all made of carbon fiber material body, the first body portion100and the second body portion102are unified, and the properties thereof are the same in all aspects, especially the thermal deformation properties are the same. In the case of large temperature difference in working environment, it is beneficial to avoid the phenomenon of inconsistent thermal deformation, reduce the pre-stress in the body10of the boom1, and improve the use safety of the boom1.

As shown inFIG.3, in any one of the above-mentioned embodiments, the boom1further comprises a first connecting portion12and a second connecting portion14. The first connecting portion12is removably connected to one end of the body10. The second connecting portion14is removably connected to another end of the body10. The first connecting portion12and the second connecting portion14have a complicated structure and can be made of materials different from those of the body10in a detachable connection manner. In case of failure or damage of the first connecting portion12and the second connecting portion14, it is only necessary to replace the damaged first connecting portion12or second connecting portion14, and it is not necessary to repair or replace the entire boom1, so as to improve the convenience of maintenance and repair of the boom1. The force situation of the first connecting portion12and the second connecting portion14is complicated, and the structure thereof is also relatively complicated; accordingly, the thermal deformation situation thereof is also relatively complicated, and the removable connection manner with the body10is also beneficial to reduce the transmission of the force thereof to the body10, thereby reducing the deformation of the body10.

Furthermore, the first connecting portion12and the body10overlap each other. The second connecting portion14and the body10overlap each other.

In some embodiments, the first connecting portion12and the first body portion100overlap each other, and the first connecting portion12and the first body portion100are fixedly connected by means of mechanical connection and adhesive connection. The second connecting portion14and the first body portion100overlap each other, and the second connecting portion14and the first body portion100are fixedly connected by means of mechanical connection and adhesive connection.

In other embodiments, the first connecting portion12and the second body portion102overlap each other; the first connecting portion12and the second body portion102are fixedly connected by means of mechanical connection and adhesive connection. The second connecting portion14and the second body portion102overlap each other; the second connecting portion14and the second body portion102are fixedly connected by means of mechanical connection and adhesive connection.

In other embodiments, the first connecting portion12and the first body portion100are overlapped with the second body portion102; the first connecting portion12and the first body portion100are fixedly connected with the second body portion102by means of mechanical connection and adhesive connection. The second connecting portion14and the first body portion100are overlapped with the second body portion102; the second connecting portion14and the first body portion100are fixedly connected with the second body portion102by means of mechanical connection and adhesive connection.

In other embodiments, the first connecting portion12and the first body portion100are overlapped with the second body portion102; the first connecting portion12and the first body portion100are fixedly connected with the second body portion102by means of mechanical connection and adhesive connection. The second connecting portion14and the first body portion100overlap each other; the second connecting portion14and the first body portion100are fixedly connected by means of mechanical connection and adhesive connection.

In further other embodiments, first connecting portion12and the first body portion100are overlapped with the second body portion102, the first connecting portion12and the first body portion100are fixedly connected by means of mechanical connection; the first connecting portion12and the second body portion102are fixedly connected by means of adhesive connection. The second connecting portion14are overlapped with the first body portion100and the second body portion102, the second connecting portion14and the first body portion100are fixedly connected by means of mechanical connection, the second connecting portion14and the second body portion102are fixedly connected by means of adhesive connection.

As shown inFIG.5, in the above-mentioned embodiments, the boom further comprises a support seat16provided on the second connecting portion14and provided with a connecting hole160to facilitate the connection with the support structure on the work machine, at least one of the first connecting portion12, the second connecting portion14and the support seat16is a steel body.

In this embodiment, the support seat16supports the boom1, and the force thereof is also complicated, and therefore it is arranged on the second connecting portion14for replacement with the second connecting portion14in case of failure or damage, which is easy to maintain without replacing the entire boom1. By setting at least one of the first connecting portion14, the second connecting portion14and the support seat16as steel body, it is advantageous to ensure the strength of the first connecting portion or the second connecting portion or the support seat, thereby ensuring the operation reliability of the first connecting portion12, the second connecting portion14and the support seat16. On the other hand, the steel raw materials are easy to be obtained, easy to be mass-produced, easy to be exchanged with the existing boom1, and have good versatility, which is beneficial to saving components and materials and reducing waste.

In some embodiments, the support seat16is connected to the hydraulic cylinder via the connecting hole160and a fastener, which may also be referred to as a cylinder base; through the connection with the hydraulic cylinder, the boom1can be easily lifted or lowered through the extension and shortening of the hydraulic cylinder.

As shown inFIG.6, an embodiment of the second aspect of the present disclosure provide a boom assembly2, comprising a plurality of sections of a first boom20hinged to each other, wherein at least one section of the first boom20is the boom1according to any one of the embodiments in the first aspect.

In this embodiment, by using the boom1of any one of the above-mentioned embodiments, all the advantageous effects of the above-mentioned embodiment are obtained, and will not be described in detail herein. The first boom1hinged to each other facilitates rotation and extends the working range of the boom assembly2in all directions of length, width and height.

In some embodiments, the first boom20is all booms1. In other embodiments, in the plurality of sections of the first boom20, only a part of them is boom1.

As shown inFIG.7, an embodiment of the third aspect of the present disclosure provides a work machine3, comprising: a boom support structure30; the boom1according to any one of above-mentioned embodiments of the first aspect connected to the boom support structure30. As shown inFIG.8, the boom assembly2according to any one of the above-mentioned embodiments in the second aspect connected to the boom support structure30.

In this embodiment, all the advantageous effects of any one of the embodiments according to the first aspect are provided by using the boom1of any one of the embodiments according to the first aspect, which will not be described in detail herein. By using the boom assembly2of any one of the embodiments according to the second aspect, all the advantageous effects of any one of the embodiments according to the second aspect are achieved, and will not be described in detail herein. By setting the boom support structure30, it is convenient to provide support for the boom1or the boom assembly2, which is beneficial to ensure the stability and reliability of the operation of the boom1.

The work machine3includes at least concrete pump truck, crane and fire truck.

In some embodiments, the boom support structure30comprises a base provided on the body of the concrete pump truck, and the base is connected to the first connecting portion12of the boom1.

In other embodiments, the boom support structure30comprises a hydraulic oil cylinder arranged on the body of the concrete pump truck, and the hydraulic oil cylinder is connected to the support seat16of the boom1; in this case, the support seat16is an oil cylinder seat.

According to the boom1provided by an embodiment of the present disclosure, the embodiment is as follows:1) The large head, small head and cylinder seat portion at both ends of the boom1uses steel structure.2) The middle box of the boom1uses pure carbon fiber structure without carbon+aluminum structure.3) The steel structure and the carbon fiber structure are connected by mechanical connection+glue joint.

As shown inFIGS.1and3, it can be understood that the first connecting portion12of the boom1is a large head end, and the second connecting portion14of the boom1is a small head end. The body10of the boom1is a middle box. As shown inFIGS.4and5, a plurality of mounting holes120are respectively provided on the large head end and the small head end, to facilitate mechanical connection with the middle box body or the body10; the body10all use carbon fiber material body. As shown inFIG.3, the body10comprise an upper U-shaped carbon groove (the first body portion100) and a lower U-shaped carbon groove (the second body portion102) which are snap-fitted and overlapped to form a box body structure; the oil cylinder seat is arranged on the small head end and the large head end, the small head end, the large head end and the oil cylinder seat are all steel structures.

It should be noted that in this embodiment, the support seat16is a cylinder seat, but the support seat16is not limited to being a cylinder seat.

The advantages of this embodiment are as follows:1) The large head end, the small head end and the oil cylinder seat portion of the boom uses steel structure, which can be interchanged with existing steel boom and has good universality, and the steel structure has been fully verified and high reliability.2) The middle box of the boom uses pure carbon fiber structure (without carbon+aluminum structure), which can avoid the inconsistent thermal deformation.3) The steel structure and the carbon fiber structure through mechanical connection+bonding, the assembled structure is conducive to the later failure maintenance, but also conducive to mass production, and ultimately achieve the purpose of lightweight design of the boom.

In other embodiments, the central box-type structure (the body10) of the boom can be formed in other configurations, for example by joining four panels of the carbon fiber material body.

The embodiment of the present disclosure is illustrated in detail above in conjunction with the accompanying drawings, according to the technical scheme of the present disclosure, while realizing the lightweight design of the boom, the split structure design is adopted, which is beneficial to simplify the mold of the boom body, improve the versatility of the mold, improve the inconsistent thermal deformation of the boom, and facilitate the later maintenance.

In the present disclosure, the terms “first”, “second”, and “third” are used for the purpose of description only, and cannot be understood as indicating or implying relative importance; and the term “plurality” means two or more, unless otherwise expressly defined. The terms “installing”, “connected”, “connection”, “fixing” and the like should be understood in a broad sense. For example, “connection” may be a fixed connection, a removable connection or an integral connection; and “connected” may refer to direct connection or indirect connection through an intermediary. A person of ordinary skills in the art could understand the specific meaning of the terms in the present disclosure according to specific situations.

In the description of the present disclosure, it should be understood that the orientation or position relationships indicated by the terms “upper”, “lower”, “left”, “right”, “front”, “back” and the like are the orientation or position relationships based on what is shown in the drawings, are merely for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction and is constructed and operated in a specific orientation, and thus cannot be understood as the limitation of the present disclosure.

In the description of the present specification, the descriptions of the terms “one embodiment”, “some embodiments” and “specific embodiments” and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. In the specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The descriptions above are only preferred embodiments of the present disclosure, which are not used to limit the present disclosure. For a person skilled in the art, the present disclosure may have various changes and variations. Any modifications, equivalent substitutions, improvements etc. within the spirit and principle of the present disclosure shall all be included in the protection scope of the present disclosure.