Multi-joint lifting cross beam and crane
Through the design of multi-joint lifting beams, the layout problem of gantry cranes in narrow spaces is solved, and heavy objects are flexibly transferred, reducing manpower burden and space occupation, and improving transportation efficiency.
Patent Information
- Application Number
- CN202422099211.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-28
AI Technical Summary
Existing gantry cranes occupy a large space, heavy single components, and complex assembly, especially inconvenient to arrange in narrow spaces.
A multi-joint lifting beam is adopted, including a plurality of sequentially connected movable joints. The first and second connectors of each movable joint are rotatable, connected by a pin or bolt, the hook bracket and handle are convenient for external force application, and the column can adjust the height and quantity, achieving flexible swing and flexible transfer of heavy objects.
It reduces manpower burden, improves workpiece transfer and installation efficiency, takes up a small space, light single components, easy to assemble, strong adaptability, and can be used flexibly in narrow spaces.
Smart Images
Figure CN223150133U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to a multi-joint lifting cross beam and a crane. Background Art
[0002] A gantry crane is a deformation of a bridge crane, also known as a gantry crane. It is mainly used for the loading and unloading operations of outdoor freight yards, material yards, and bulk goods. The gantry crane has the characteristics of high site utilization rate, large operation range, wide adaptability, strong versatility, etc., and is widely used in port freight yards. Its metal structure is like a gantry frame. Two supporting legs are installed under the load-bearing main beam, and it can walk directly on the ground track. The two ends of the main beam can have outstretched cantilever beams.
[0003] However, the gantry crane occupies a large space, has a heavy single component, and is complex to assemble. Especially in narrow spaces such as inside the engine room, it is not convenient to arrange the top gantry crane. Content of the Utility Model
[0004] The purpose of the utility model is to provide a multi-joint lifting cross beam and a crane to overcome at least one of the defects existing in the above-mentioned prior art. The crane includes a support column and a multi-joint lifting cross beam. It can, with the assistance of external force, flexibly realize the vertical lifting or horizontal transfer of heavy objects within the working radius and load range, greatly reducing the human burden. Its advantages include that the working height and slewing radius can be adjusted according to needs, it occupies a small space, has a light single component, is convenient to assemble, reduces the burden of manual handling, and improves the work efficiency of workpiece transfer and installation.
[0005] The purpose of the utility model can be realized by the following technical solutions:
[0006] One of the purposes of the utility model lies in a multi-joint lifting cross beam, which includes a plurality of successively connected movable joints;
[0007] The movable joint includes a first connecting member and a second connecting member that are rotatably connected, and the first connecting member of one of the movable joints is connected to the second connecting member of its adjacent movable joint.
[0008] Furthermore, a hook bracket is arranged at the second end of the movable joint; the hook bracket and the middle movable joint are provided with handles for applying external force.
[0009] Furthermore, a lifting hook is suspended on the hook bracket.
[0010] Furthermore, the first connecting member of the movable joint is hinged or bolt-connected to the second connecting member of its adjacent movable joint. Of course, the connection method between the first connecting member of the movable joint and the second connecting member of its adjacent movable joint is not limited to being hinged by a pin shaft or bolt-connected.
[0011] Further, from the first end to the second end of the lifting crossbeam, the heights of the plurality of movable joints decrease in sequence.
[0012] The second object of the present utility model is a crane, comprising: a support column; the multi-joint lifting crossbeam as described above, and the first end of the multi-joint lifting crossbeam is connected to the support column.
[0013] Further, the support column includes a column base, a terminal heightening section, and a plurality of intermediate heightening sections disposed therebetween; the terminal heightening section is connected to the first end of the multi-joint lifting crossbeam.
[0014] Further, the column base is vertically installed on the working base. There is an inclination angle α between the bottom surface of the column base and the working base, so as to ensure that the support column forms an included angle β with the horizontal plane, and β = 90°.
[0015] Further, the column base is connected to the working base by bolts.
[0016] Further, the column base, the terminal heightening section and its adjacent intermediate heightening sections are connected by bolts; each of the intermediate heightening sections is connected by bolts.
[0017] Compared with the prior art, the present utility model has the following advantages:
[0018] (1) In the present utility model, the first connecting member and the second connecting member of each movable joint rotate around their rotation axes, and the plurality of movable joints can rotate relative to each other, so that the lifting crossbeam forms a flexible swing, thereby flexibly transferring the heavy object to the target position;
[0019] (2) In the present utility model, the column can increase or decrease the number of installed sections of the column according to the height requirement of the lifting target, and change the limit height of the crossbeam;
[0020] (3) After being installed, the present utility model can be integrally folded flexibly and occupies a small space;
[0021] (4) The present utility model adopts a rectangular steel pipe welding structure, and is fixed by bolt connection or hinged by a pin shaft, with small machining amount and low cost;
[0022] (5) According to the actual load-bearing condition, each joint is designed with equal strength. From the first end to the second end of the lifting crossbeam, that is, from the root of the lifting crossbeam to the end of the lifting crossbeam, the joint height decreases in sequence, reducing the weight of a single joint;
[0023] (6) Within the rated load and the slewing radius range, with the assistance of human power, the present utility model can freely transfer the heavy object horizontally from point A to point B;
[0024] (7) Within the range of rated load and the maximum height of the equipment, with the assistance of manual labor and auxiliary equipment, the present utility model can realize the transfer of heavy objects from a lower point to a higher point. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the crane in Embodiment 1;
[0026] Figure 2 It is a schematic diagram of the support column in Embodiment 1;
[0027] Figure 3 It is a schematic diagram of the end extension section in Embodiment 1;
[0028] Figure 4 It is a schematic diagram of the movable joint in Embodiment 1;
[0029] Figure 5 It is a schematic diagram of the multi-joint lifting crossbeam in Embodiment 1;
[0030] Figure 6 It is a working scenario diagram of the crane in Embodiment 1;
[0031] Figure 7 It is a schematic diagram of the crane in Embodiment 2;
[0032] Figure 8 It is a schematic diagram of the support column in Embodiment 2;
[0033] Figure 9 It is a schematic diagram of the end extension section in Embodiment 2;
[0034] Figure 10 It is a schematic diagram of the movable joint in Embodiment 2;
[0035] Figure 11 It is a schematic diagram of the multi-joint lifting crossbeam in Embodiment 2;
[0036] Figure 12 It is a working scenario diagram of the crane in Embodiment 2;
[0037] As shown by the reference numerals in the figure: 1 - support column; 2 - multi-joint lifting crossbeam; 3 - column base; 4 - first intermediate heightening section; 5 - second intermediate heightening section; 6 - third intermediate heightening section; 7 - end heightening section; 8 - working base; 9 - upper connection point of the end heightening section; 10 - lower connection point of the end heightening section; 11 - first connection point; 12 - second connection point; 13 - third connection point; 14 - fourth connection point; 15 - rotating shaft; 16 - first movable joint; 17 - second movable joint; 18 - eighth movable joint; 19 - hook support; 20 - end handle; 21 - intermediate handle; a - horizontal plane; b - heavy object; 7’ - end heightening section; 9’ - upper connection point of the end heightening section; 10’ - lower connection point of the end heightening section; 11’ - first connection point; 12’ - second connection point; 13’ - third connection point; 14’ - fourth connection point; 16’ - first movable joint; 17’ - second movable joint; 18’ - eighth movable joint. Detailed implementation mode
[0038] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation mode and specific operation process are given, but the protection scope of the present utility model is not limited to the following embodiments.
[0039] In the technical solution of the present utility model, features such as component models, material names, connection structures, control methods, etc. that are not clearly described are regarded as common technical features disclosed in the prior art.
[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0041] In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a bolt connection or a welding connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0042] In order to reduce the burden of manual handling and improve the work efficiency of workpiece transfer and installation, the present utility model provides a multi-joint lifting crossbeam, which includes a plurality of sequentially connected movable joints;
[0043] The movable joint includes a first connecting member and a second connecting member that are rotatably connected, and the first connecting member of one of the movable joints is connected to the second connecting member of its adjacent movable joint.
[0044] In some specific embodiments of the present utility model, a hook bracket 19 is provided at the second end of the movable joint; a handle for applying an external force is provided on the hook bracket 19 and the middle movable joint.
[0045] In some specific embodiments of the present utility model, a lifting hook is suspended on the hook bracket 19. Of course, those skilled in the art should understand that the lifting hook is only a preferred embodiment of one aspect of the suspension of the hook bracket 19, and other existing or future components with similar functions to the lifting hook, if applicable to this application, should also be included within the protection scope of this application and are hereby incorporated herein by reference.
[0046] In some specific embodiments of the present utility model, the first connecting member of the movable joint and the second connecting member of its adjacent movable joint are hinged by a pin shaft or connected by a bolt. Of course, those skilled in the art should understand that the pin shaft or the bolt is only a preferred embodiment of one aspect of the connection between the first connecting member of the movable joint and the second connecting member of its adjacent movable joint, and other existing or future components with similar functions to the pin shaft or the bolt, if applicable to this application, should also be included within the protection scope of this application and are hereby incorporated herein by reference.
[0047] In some specific embodiments of the present utility model, from the first end to the second end of the lifting crossbeam, the heights of multiple movable joints decrease in sequence.
[0048] The present utility model also provides a crane, including: a support column; a multi-joint lifting crossbeam as described above, and the first end of the multi-joint lifting crossbeam is connected to the support column.
[0049] In some specific embodiments of the present utility model, the support column includes a column base 3, a terminal extension section 7, and multiple intermediate extension sections disposed therebetween; the terminal extension section 7 is connected to the first end of the multi-joint lifting crossbeam.
[0050] In some specific embodiments of the present utility model, the column base 3 is vertically installed on the working base. The column base 3 is bolted to the working base. The column base 3, the end extension section 7 and its adjacent intermediate extension sections are bolted together; each of the intermediate extension sections is bolted to the adjacent one. Of course, those skilled in the art should understand that the bolted connections between the column base 3 and the working base, the column base 3, the end extension section 7 and its adjacent intermediate extension sections, and each of the intermediate extension sections are only preferred embodiments of the above-described structural connection relationships. Other existing or future possible connection structural components that are applicable to this application should also be included within the protection scope of this application and are hereby incorporated herein by reference.
[0051] Embodiment 1
[0052] Please refer to Figure 1 , this embodiment provides a crane, which includes a support column 1 and a multi-joint lifting crossbeam 2; the first end of the multi-joint lifting crossbeam 2 is connected to the support column 1, and a hook bracket 19 is provided at the second end.
[0053] Please refer to Figure 2 , in this embodiment, the support column 1 includes a column base 3, an end extension section 7, and a plurality of intermediate extension sections disposed therebetween. According to the lifting height requirement of the actual working condition of the heavy object b, the number of intermediate extension sections of the support column can be increased or decreased; in this embodiment, there are 3 intermediate extension sections, which are the first intermediate extension section 4, the second intermediate extension section 5, and the third intermediate extension section 6 connected in sequence. Among them, the column base 3 is installed and fixed on the working base 8 by bolts around the circumference. A certain skew angle α can be designed between the column base 3 and the working base 8. The skew angle α can ensure that an included angle β is formed between the support column 1 and the horizontal plane a after installation, and β = 90°, ensuring that the crossbeam is parallel to the horizontal plane a. However, considering the deformation of the crossbeam under the flexural load, pre-deformation is designed between the joints of the crossbeam to make the whole crossbeam warp upward in advance, so as to achieve the effect that the crossbeam is parallel to the horizontal plane a after loading; the column base 3, the end extension section 7 and its adjacent intermediate extension sections are bolted together; each of the intermediate extension sections is bolted to the adjacent one.
[0054] Please refer to Figure 1-3 , in this embodiment, the end extension section 7 is connected to the first end of the multi-joint lifting crossbeam 2; specifically, an upper connection point 9 and a lower connection point 10 of the end extension section are provided on the end extension section 7, and the first end of the multi-joint lifting crossbeam 2 is connected through the upper connection point 9 and the lower connection point 10 of the end extension section.
[0055] Please refer to Figure 4-5, in this embodiment, the multi-joint lifting crossbeam 2 includes a plurality of successively connected movable joints. From the first end to the second end of the crossbeam, the heights of the plurality of movable joints decrease successively. According to the limit turning radius requirement of the lifted heavy object b, the number of movable joints of the multi-joint lifting crossbeam 2 can be increased or decreased accordingly. As Figure 4 shown, the structure of a single movable joint includes a first connecting member and a second connecting member that are rotatably connected, and the first connecting member of one movable joint is connected to the second connecting member of its adjacent movable joint.
[0056] Specifically, every two movable joints are connected by bolts. Figure 4 In the first connection part 11 and the second connection part 12 of the movable joint at the first end of the multi-joint lifting crossbeam 2 in Figure 3 are correspondingly connected to the upper connection part 9 and the lower connection part 10 of the end heightening section in Figure 4 to complete the connection between the end heightening section 7 and the first joint of the crossbeam. Figure 5 The third connection part 13 and the fourth connection part 14 of the movable joint in
[0057] Please refer to Figure 5 , the assembled state of the multi-joint lifting crossbeam 2. The multi-joint lifting crossbeam 2 of this embodiment includes eight movable joints and a hook bracket 19 provided at the second end of the multi-joint lifting crossbeam 2; an end handle 20 is provided on the hook bracket 19, and an intermediate handle 21 is provided on the fourth movable joint in the middle of the multi-joint lifting crossbeam 2.
[0058] Please refer to Figure 6 , when the multi-joint lifting crossbeam 2 is working, the first connecting member and the second connecting member of each movable joint rotate around their rotation axis 15, and the rotation axes 15 inside each movable joint can rotate relative to each other. With the external force pushing the end handle 20 and the intermediate handle 21, it drives the internal rotation of each joint, so as to ensure that the lifting hook reaches directly above the object to be lifted. Use equipment such as a chain block to lift the heavy object b, and push the end handle 20 and the intermediate handle 21 again to transfer the heavy object b to the target position to complete the lifting or installation operation. Within the rated load and working radius range, the crane provided in this embodiment can quickly and conveniently transfer the heavy object b; within the turning radius range of the multi-joint lifting crossbeam 2, the joints of the multi-joint lifting crossbeam 2 can rotate relative to each other, so that the hook bracket 19 can reach within a 360° range centered on the support column 1 for hoisting work.
[0059] Embodiment 2
[0060] This embodiment is basically the same as Embodiment 1, except that in this embodiment, every two movable joints are hinged by a pin shaft.
[0061] Please refer to Figure 7-12 , Figure 10 in which the first connection 11' and the second connection 12' of the movable joint at the first end of the multi-joint lifting crossbeam 2 are correspondingly hinged by a pin shaft Figure 9 the upper connection 9' and the lower connection 10' of the end heightening section in , to complete the connection between the end heightening section 7' and the first joint of the crossbeam. Figure 10 the third connection 13' and the fourth connection 14' of the movable joint in are correspondingly hinged to the first connection 11' and the second connection 12' of the next movable joint, to complete Figure 11 the connection between the first movable joint 16' and the second movable joint 17' in , and successively connect the heads and tails of the movable joints, and install the hook bracket 19 to complete the assembly of the lifting crossbeam.
[0062] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A multi-joint lifting crossbeam, characterized in that, It includes a plurality of sequentially connected movable joints; each of the movable joints includes a first connecting member and a second connecting member that are rotatably connected, and the first connecting member of one of the movable joints is connected to the second connecting member of its adjacent movable joint.
2. The multi-joint lifting crossbeam according to claim 1, characterized in that, A hook bracket is provided at the second end of the movable joint; a handle for applying an external force is provided on the hook bracket and the middle movable joint.
3. The multi-joint lifting crossbeam according to claim 2, wherein, A lifting hook is suspended on the hook bracket.
4. A multi-joint lifting crossbeam according to claim 1, characterized in that, The first connecting member of the movable joint and the second connecting member of its adjacent movable joint are hinged by a pin shaft or connected by a bolt.
5. A multi-joint lifting crossbeam according to claim 1, characterized in that, From the first end to the second end of the lifting crossbeam, the heights of the plurality of movable joints decrease sequentially.
6. A crane, characterized in that, It includes: A support column; The multi-joint lifting crossbeam according to any one of claims 1-5, wherein the first end of the multi-joint lifting crossbeam is connected to the support column.
7. A crane according to claim 6, wherein The support column includes a column base, a top extension section, and a plurality of intermediate extension sections disposed therebetween; The top extension section is connected to the first end of the multi-joint lifting crossbeam.
8. A crane according to claim 7, characterized in that, The column base is vertically installed on the working base.
9. A crane according to claim 8, characterized in that, The column base and the working base are connected by bolts.
10. A crane according to claim 7, characterized in that, The column base, the top extension section and its adjacent intermediate extension sections are connected by bolts; each of the intermediate extension sections is connected to each other by bolts.