Convertible assembly type crane frame structure

Abstract

The invention discloses a convertible assembly type crane frame structure. The convertible assembly type crane frame structure comprises a frame front section, a frame middle section, a frame seat ring and a frame rear section, the frame front section and the frame middle section, the frame middle section and the frame seat ring, and the frame seat ring and the frame rear section are connected in a detachable assembly mode through connecting devices. According to the crane frame structure, the number of welding beads connected with all the sections of the crane frame is reduced, a new thought is provided for design and connection of the crane frame, and the crane frame structure capable of flexibly disassembling and assembling all the sections of the frame is provided.

Description

Technical Field

[0001] The invention relates to the field of cranes, and in particular to a transformable assembled crane frame structure. Background Art

[0002] With the continuous expansion of domestic infrastructure construction and project types, higher and higher requirements are placed on the load-bearing capacity of lifting equipment. In order to meet the load-bearing capacity requirements, higher standards are placed on the strength and stiffness of the frame structure. In order to ensure the safety and reliability of lifting equipment, the structural size and weight of the crane frame continue to increase, exceeding the permitted range of vehicle driving by road regulations. The transfer form of existing lifting vehicles is to dismantle and transport the detachable accessories, and transfer the chassis separately. If there are local positions of the crane chassis structure that do not meet the requirements of road driving regulations, or the weight of the chassis structure exceeds the road driving regulations, the transfer flexibility of the crane will face huge challenges.

[0003] At present, the connection of the crane frame of super-large tonnage mainly adopts the structure of integrated welding, that is, the front section of the frame, the middle section of the frame, the frame seat ring and the rear section of the frame are connected by welding. That is, each section is first individually welded and formed, and then the structure of each section is welded into an integral structure. For heavy-duty transport vehicles, in order to increase the flexibility and maneuverability of the vehicle, the front and the body can be kept separate in a non-working state, and the front and the body can be connected when the work is needed, which increases the variability of its functions. However, for crane vehicles, especially large cranes, due to the special requirements of the load-bearing characteristics and lifting safety characteristics of the frame, it is generally adopted to weld its various parts together to form a whole frame. However, this method often makes the large crane machinery huge, resulting in great restrictions on the transfer and transportation process of large crane machinery. In order to make the lifting machinery meet the requirements of road regulations on weight and vehicle width during the transfer process, a very small number of cranes have tried to make a part of the frame freely detachable. For example, major crane manufacturers have successively developed fixed leg combination disassembly technology (patent number CN203005533U) to reduce the weight of the whole vehicle. However, this detachable structure is only used in certain local locations with special needs, so the weight of its disassembled structure is generally limited. In addition, in order to meet the load-bearing requirements, the frame seat design structure of existing large cranes often does not meet the requirements of road regulations on vehicle width during driving, which is another problem faced by crane transfer transportation. In the prior art, whether it is an integrated welded structure or a partially detachable structure, it is far from meeting the current needs of flexible transfer and transportation of cranes.

[0004] In order to meet the current crane market's demand for flexible transfer and convenient transportation, it is necessary to develop a new type of crane frame structure that can be flexibly disassembled and assembled in sections as needed. Summary of the invention

[0005] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a transformable assembled crane frame structure, which reduces the number of welds connecting the various sections of the crane frame, provides new ideas for the design and connection of the crane frame, and provides a crane frame structure that can flexibly disassemble and assemble the various section frames.

[0006] Technical solution: A transformable assembled crane frame structure of the present invention is characterized in that it includes a frame front section, a frame middle section, a frame seat ring and a frame rear section; the frame front section and the frame middle section, the frame middle section and the frame seat ring, and the frame seat ring and the frame rear section are all detachably assembled and connected via a connecting device.

[0007] Wherein, the connecting device comprises an auxiliary hydraulic cylinder, a connecting vertical plate, a detachable part and a connecting vertical ear.

[0008] Among them, the auxiliary hydraulic cylinder is located at the front side of each section of the workshop except the front section of the frame, with the front of the frame as the positive direction, including the front side of the middle section of the frame, the front side of the frame seat ring and the front side of the rear section of the frame; the detachable parts are disassembled or installed by retracting the auxiliary hydraulic cylinder.

[0009] Among them, the connecting vertical plate and the auxiliary hydraulic cylinder are located on the same side and are arranged correspondingly. The connecting vertical plate adopts a double vertical plate structure with holes on the upper and lower parts, and the circular holes provide a channel for the auxiliary hydraulic cylinder to pass through.

[0010] Wherein, the detachable part is the middle section of the frame, the frame seat ring or the rear section of the frame.

[0011] The connecting ears provide mutual connection positions for the detachable parts, and the connecting ears and the connecting plates are connected by auxiliary hydraulic cylinders to achieve connection of the detachable parts.

[0012] Wherein, two auxiliary hydraulic cylinders are arranged on the side of the detachable part, and the auxiliary hydraulic cylinders are connected to the connecting vertical plates on both sides.

[0013] Wherein, two connecting vertical plates are provided on the left and right sides of the auxiliary hydraulic cylinder.

[0014] The number of the connecting ears is 4, and the positions of the connecting ears correspond to the detachable parts.

[0015] Among them, each section of the frame is welded in sections, and after each section is welded and formed, the vertical plate and the auxiliary hydraulic cylinder are welded at the end surface of each connecting section; the connecting components with a mutually nested matching relationship are fixed on the end surface of the frame respectively. During assembly, after each section of the frame is positioned to the corresponding position through the connecting device, the fastening component is inserted into each connecting component by using the hydraulic auxiliary device, and each section is fixedly connected by the fastening component to form the main structure of the frame; by selecting different detachable parts, different frame structures can be formed, and the assembly is selected according to actual needs.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: Under the premise of ensuring the high reliability and lifting safety of the lifting machinery, the present invention provides a crane frame structure that can be flexibly disassembled and assembled in sections as required. The frame structure can disassemble the parts that do not meet the road driving requirements (exceeding the 3-meter regulatory requirements and heavy weight), and combine and connect the sections that meet the driving regulations, which can not only greatly reduce the weight and length of the chassis during vehicle transfer and transportation, but also meet the requirements of national road regulations for vehicle driving. This structural form can achieve the purpose of flexible disassembly and free assembly of the crane, and ultimately provide convenience for the transfer and transportation of vehicles in a non-working state.

[0017] The present invention can effectively reduce the weight and length of the crane by disassembling and assembling the frame, so that large-tonnage cranes meet the requirements of road regulations for vehicle driving, facilitate the transfer and transportation of the crane, and improve the flexibility of the crane. At present, with the increasing demand for crane frame structures, the main load-bearing part of the crane when lifting weights - the frame seat ring, exceeds the provisions of road regulations, while the remaining sections of the frame meet the driving requirements. In order to facilitate transportation and transfer, the present invention can be applied thereto, and the frame seat ring can be flexibly disassembled and assembled according to the working state and driving state, which can not only greatly reduce the weight of the vehicle when driving, but also disassemble the parts that do not meet road regulations for separate transportation, which has the advantages of high maintenance efficiency and low transfer cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the prior art crane chassis being transported separately for transfer;

[0019] Figure 2 This is a schematic diagram of an integrated welded structure of a crane frame connection in the prior art;

[0020] Figure 3 It is a schematic diagram of a conventional crane fixed leg assembly disassembly structure;

[0021] Figure 4 It is a structural schematic diagram of the frame of the present invention;

[0022] Figure 5It is a schematic diagram of the top view of the frame of the present invention;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the frame of the present invention;

[0024] Figure 7 Schematic diagram of the assembly connection of the frame of the present invention Figure 1 ;

[0025] Figure 8 Schematic diagram of the assembly connection of the frame of the present invention Figure 2 ;

[0026] Fig. 9 It is a schematic diagram of the structure of the connecting ears of the present invention;

[0027] Fig.10 It is a schematic diagram of the chassis transformation assembly of the present invention;

[0028] Fig.11 It is a schematic diagram of the chassis after the chassis of the present invention is transformed and assembled;

[0029] In the figure, 1 is the front section of the frame; 2 is the connecting device; 3 is the middle section of the frame; 4 is the frame seat ring; 5 is the rear section of the frame; 6 is the auxiliary hydraulic cylinder; 7 is the connecting vertical plate; 8 is the detachable part; and 9 is the connecting vertical ear. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The frame structure of the present invention: the main structure of the crane, used to fix various related mechanisms and components, and used for bearing support structure. Frame seat ring: a component on the chassis frame used to fix the slewing bearing and bear the load of the crane in working state. Removable structure: a concept relative to the vehicle body. In this patent, it refers to a part of the vehicle body along the longitudinal direction, such as the middle section of the frame, the frame seat ring, the rear section of the frame, etc. Assembly connection device: a device used to connect and fix different segmented frames, located at the connection ports of different frame sections. Variable assembled frame structure: a frame structure form that can be flexibly changed according to actual use requirements, and can realize the assembly of different frame lengths through the combined assembly of different segmented frames. The frame structure can be flexibly adjusted according to use requirements.

[0032] The scheme of the present invention relates to a crane frame structure that can be flexibly disassembled and assembled, and at least one part in the longitudinal length direction of the vehicle body can be removed. Compared with the existing general scheme, the scheme of the present invention is mainly different in that the front section 1 of the frame, the middle section 3 of the frame, the frame seat ring 4 and the rear section 5 of the frame can all become detachable parts in this scheme, that is, the frame body can be freely combined, while the conventional frame parts are welded together to form the frame body. The specific implementation form is to add a connecting device 2 at the end of each segment of the frame, and after the corresponding position of each connecting segment is determined by the end connecting device 2, each connecting segment is fixed by a hydraulic auxiliary device. The connecting device 2 has a variety of implementation forms. In order to more clearly understand and express the above-mentioned purpose, features and advantages of the present invention, one of the specific feature forms is used below to describe the scheme of the present invention, but the connection device form of the present invention includes but is not limited to this description example form, and the following structural form is only required for example.

[0033] The convertible assembled crane frame structure of the present invention comprises a frame front section 1, a frame middle section 3, a frame seat ring 4 and a frame rear section 5; the frame front section 1 and the frame middle section 3, the frame middle section 3 and the frame seat ring 4, and the frame seat ring 4 and the frame rear section 5 are all detachably assembled and connected via a connecting device 2. The connecting device 2 comprises an auxiliary hydraulic cylinder 6, a connecting vertical plate 7, a detachable portion 8 and a connecting vertical ear 9.

[0034] The auxiliary hydraulic cylinder 6 of the present invention is located at the front side of each section of the vehicle with the front of the vehicle as the positive direction, except for the front section 1 of the vehicle frame, including the front side of the middle section 3 of the vehicle frame, the front side of the frame seat ring 4 and the front side of the rear section 5 of the vehicle frame; when each section of the detachable part is placed in a suitable position, the detachable part 8 is disassembled or installed by the extension and contraction of the auxiliary hydraulic cylinder 6. The connecting plate 7 of the present invention is located on the same side as the auxiliary hydraulic cylinder 6 and is correspondingly arranged. To ensure the reliability of the connection, the connecting plate 7 adopts a double plate structure with holes on the upper and lower sides, and the circular holes provide a passage for the auxiliary hydraulic cylinder 6 to pass through. The detachable part 8 of the present invention is the middle section 3 of the vehicle frame, the frame seat ring 4 or the rear section 5 of the vehicle frame. By selecting different detachable parts, the vehicle frame can form a variety of different connection structures according to different use conditions, so as to meet the use requirements to the greatest extent. The connecting ears 9 of the present invention provide a mutual connection position for the detachable part 8, and the connecting ears 9 and the connecting plate 7 are connected by the auxiliary hydraulic cylinder 6 to realize the connection of the detachable part 8.

[0035] Further, two auxiliary hydraulic cylinders 6 are provided on the side of the detachable part 8, and the auxiliary hydraulic cylinders 6 are connected to the connecting vertical plates 7 on both sides. Two connecting vertical plates 7 are provided on both sides of the auxiliary hydraulic cylinder 6. The number of connecting vertical ears 9 is 4, and the position of the connecting vertical ears 9 corresponds to the detachable part 8.

[0036] When in use, each section of the frame is welded in sections. After each section is welded and formed, the vertical plate 7 and the auxiliary hydraulic cylinder 6 are welded at the end surface of each connecting section. The connecting components with a mutually nested matching relationship are fixed on the end surface of the frame respectively. When assembling, after the each section of the frame is positioned to the corresponding position through the connecting device 2, the fastening component is inserted into each connecting component by using the hydraulic auxiliary device, and the each section is fixedly connected by the fastening component to form the main structure of the frame. By selecting different detachable parts 8, different frame structures can be formed, and the assembly is selected according to actual needs.

[0037] The connection and fastening assembly of the connection device of the present invention can have a variety of structural forms. The above is only for the convenience of description, and the support and auxiliary hydraulic cylinder are used as examples. The realization of this structure can meet the flexible assembly and disassembly requirements of the frame. For a large crane frame with a huge body, the assembly connection device can be used to realize the separate disassembly and transportation of the vehicle section, which greatly facilitates the transfer and transportation of the vehicle, improves efficiency and reduces costs.

[0038] For a frame structure that can be freely disassembled and flexibly assembled, its specific implementation method needs to be implemented in combination with an assembly connection device. First, the various sections of the frame need to be connected by the assembly connection device. Fig.10 The structure shown is a complete assembly diagram of the detachable parts. However, in actual use, a part of the frame structure exceeds the road regulations, resulting in the frame not complying with road driving regulations. At this time, the sections of the vehicle that do not comply with the road regulations in terms of weight, length and width can be removed and transported separately, and the sections of the frame that comply with road driving regulations can be assembled to achieve efficient and convenient crane transfer transportation. For example, in order to meet the load-bearing capacity of large-tonnage cranes, the seat ring part of the chassis often exceeds the road regulations for width and weight. The chassis is partially disassembled, and the remaining sections of the chassis are assembled together through assembly connection devices. The specific structure after assembly is as follows Fig.11 During transportation, in order to meet the needs of transfer and transportation, the sections that do not comply with road regulations can be disassembled and the remaining sections that comply with road regulations can be assembled, such as Fig.11 The figure shows that the frame seat ring is temporarily disassembled and the rest of the car sections are assembled for transportation. This freely disassembled and assembled frame increases the design flexibility of the crane frame structure and can greatly meet the transfer requirements of large-tonnage cranes. This disassembly combination is a typical application form of the transformation assembly frame structure.

[0039] The present invention provides a convertible assembled crane frame structure, which can realize different frame structures by assembling different detachable frame sections, thereby providing convenience for vehicle maintenance and transfer transportation. The number of butt welds of the frame structure is reduced, the difficulty of the manufacturing process and the requirements for the welding level of production personnel are reduced, and the stability of product quality is improved. The detachability of a part or multiple parts of the vehicle body is realized, the length of the vehicle is shortened, the turning radius of the vehicle is reduced, and the passability is significantly improved. The connection length of the frame can be flexibly combined, and the frame length under different working conditions of the crane can be freely combined according to actual needs, such as combining different states according to the working state and the driving state, which can meet the needs of various situations, improve the efficiency of transportation, and reduce the cost of transportation. Compared with the frame of the welding connection form, the volume of the frame can be reduced, and it can be conveniently disassembled and repaired whether in the process of processing and manufacturing or in the process of transportation and delivery. In addition, compared with the welding structure, the welding risk of the frame can be reduced and the safety can be improved. In view of the increasing market demand for crane tonnage, the trend of increasing crane frames is becoming more and more obvious. However, national laws and regulations have relevant regulatory requirements for construction machinery that can be driven on the road. Once the frame exceeds the regulatory requirements, there will be serious problems with the frame's driving on the road. Therefore, the design of this flexible combined frame structure can easily disassemble and transport the sections that do not meet the requirements, often the frame seat ring sections, separately, and assemble the remaining sections for road driving, which increases the transfer flexibility of large cranes and provides new ideas for the operation and transportation of large cranes in the future.

Claims

1. A convertible assembled crane frame structure, characterized in that: The vehicle comprises a front frame section (1), a middle frame section (3), a frame seat ring (4) and a rear frame section (5); the front frame section (1) and the middle frame section (3), the middle frame section (3) and the frame seat ring (4), and the frame seat ring (4) and the rear frame section (5) are all detachably assembled and connected via a connecting device (2).

2. The convertible assembled crane frame structure according to claim 1 is characterized in that: The connecting device (2) comprises an auxiliary hydraulic cylinder (6), a connecting vertical plate (7), a detachable part (8) and a connecting vertical ear (9).

3. The convertible assembled crane frame structure according to claim 2 is characterized in that: The auxiliary hydraulic cylinder (6) is located at the front side of each section of the vehicle frame (except the front section (1) of the vehicle frame, with the front of the vehicle frame as the positive direction, including the front side of the middle section (3) of the vehicle frame, the front side of the frame seat ring (4) and the front side of the rear section (5) of the vehicle frame; the detachable part (8) is disassembled or installed by extending and retracting the auxiliary hydraulic cylinder (6).

4. The convertible assembled crane frame structure according to claim 2 is characterized in that: The connecting plate (7) and the auxiliary hydraulic cylinder (6) are located on the same side and are arranged correspondingly. The connecting plate (7) adopts a double plate structure with holes on the upper and lower sides, and the circular holes provide a passage for the auxiliary hydraulic cylinder (6) to pass through.

5. The convertible assembled crane frame structure according to claim 2 is characterized in that: The detachable part (8) is the middle section of the frame (3), the frame seat ring (4) or the rear section of the frame (5).

6. The convertible assembled crane frame structure according to claim 2 is characterized in that: The connecting ears (9) provide mutual connection positions for the detachable parts (8), and the connecting ears (9) and the connecting plates (7) are connected by an auxiliary hydraulic cylinder (6) to achieve connection of the detachable parts (8).

7. The convertible assembled crane frame structure according to claim 5 is characterized in that: The side of the detachable part (8) is provided with two auxiliary hydraulic cylinders (6), and the auxiliary hydraulic cylinders (6) are connected to the connecting vertical plates (7) on both sides.

8. The convertible assembled crane frame structure according to claim 7 is characterized in that: Two connecting vertical plates (7) are provided on the left and right sides of the auxiliary hydraulic cylinder (6).

9. The convertible assembled crane frame structure according to claim 8 is characterized in that: The number of the connecting ears (9) is 4, and the positions of the connecting ears (9) correspond to the detachable parts (8).

10. The convertible assembled crane frame structure according to any one of claims 1 to 9, characterized in that: Each section of the frame is welded in sections. After each section is welded and formed, a connecting vertical plate (7) and an auxiliary hydraulic cylinder (6) are welded at the end surface of each connecting section. Connecting components with a mutually nested matching relationship are fixed on the end surface of the frame. During assembly, each section of the frame is positioned at a corresponding position through a connecting device (2). Then, a fastening component is inserted into each connecting component using a hydraulic auxiliary device, and each section is fixedly connected through the fastening component to form a main frame structure. Different frame structures can be formed by selecting different detachable parts (8), and the assembly is selected according to actual needs.

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