Hoisting portal frame

Abstract

The utility model discloses a hoisting portal frame which comprises stand columns, a cross beam and a hoisting assembly, the stand columns are arranged in pairs, the two stand columns arranged in pairs are correspondingly fixed to the two ends of the cross beam to form a portal frame structure, the length of the stand columns and the length of the cross beam are adjustable, and the hoisting assembly is hung below the cross beam through a connecting steel wire rope. The connecting steel wire ropes are arranged in pairs, the two connecting steel wire ropes arranged in pairs are correspondingly arranged on the two sides of the hoisting assembly, one ends of the connecting steel wire ropes are fixed to the hoisting assembly, and the other ends of the connecting steel wire ropes are fixed to the stand columns on the same sides. According to the utility model, the vertical columns and the cross beams are arranged to be in a length-adjustable structural form, so that the construction requirements of different use scenes can be met, and the purposes of reducing cost and increasing efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting construction, and particularly relates to a hoisting gantry. Background Art

[0002] There are many specifications for hoisting holes in the structures of sewage treatment plants, and the space is limited. During construction, it is difficult to transport the required materials manually, and large-scale mechanical equipment has problems in entering the site due to space limitations. At this time, using a gantry for material hoisting becomes the best construction option.

[0003] However, the model specifications of traditional gantries are relatively fixed. Generally, a finished gantry can only be applicable to hoisting holes of one specification. Facing hoisting holes of different specifications or the need to place the gantry at different spatial height positions at the construction site, traditional gantries cannot meet the hoisting requirements of different construction environments. Moreover, repeatedly manufacturing gantries will cause waste of materials, labor and time, which not only increases the construction cost but also limits the construction efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hoisting gantry to solve the technical problems described in the background art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] A hoisting gantry includes columns, a cross beam and a hoisting assembly. The columns are arranged in pairs, and the two columns arranged in pairs are fixedly connected to both ends of the cross beam respectively to form a gantry structure. The lengths of the columns and the cross beam are adjustable. The hoisting assembly is suspended below the cross beam by connecting steel wires. The connecting steel wires are arranged in pairs, and the two connecting steel wires arranged in pairs are correspondingly arranged on both sides of the hoisting assembly. One end of each connecting steel wire is fixed on the hoisting assembly, and the other end is fixed on the column on the same side.

[0007] Preferably, each column includes two column base sections, and the ends of the two column base sections close to each other are fixedly connected in a detachable manner, or the ends of the two column base sections close to each other are fixedly connected in a detachable manner through at least one column extension section.

[0008] Preferably, the cross beam includes two cross beam base sections, and the ends of the two cross beam base sections close to each other are fixedly connected in a detachable manner, or the ends of the two cross beam base sections close to each other are fixedly connected in a detachable manner through at least one cross beam extension section.

[0009] Preferably, a pulley is fixed at the top of the column, and a winding assembly is fixedly installed at the lower part of the column. The connecting steel wire bypasses the pulley on the same side of the column and is connected to the winding assembly.

[0010] Preferably, the winding component is arranged at a position 1.0 - 1.5 m above the support structure surface of the column.

[0011] Preferably, a base is fixedly arranged at the bottom end of the column.

[0012] Preferably, a diagonal brace is arranged between the base and the column.

[0013] Preferably, a diagonal brace is fixedly arranged between the column and the crossbeam.

[0014] Preferably, the column base sections are fixed to each other and the column base section and the column extension section are fixed by means of flange connection.

[0015] Preferably, the crossbeam base sections are fixed to each other and the crossbeam base section and the crossbeam extension section are fixed by means of flange connection.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By setting the column and the crossbeam in a structure with adjustable lengths, the present utility model can meet the construction requirements of different usage scenarios, achieving the purpose of cost reduction and efficiency improvement.

[0018] 2. The present utility model directly connects the hoisting component to the column through the connecting steel wire rope. The column directly bears the vertical component force of the hoisted component, so that the crossbeam only needs to bear the horizontal component force, and no vertical shear force will be generated at the crossbeam, giving full play to the advantage that the axial bearing capacity of the spliced and assembled long rod-shaped components does not change much. At the same time, it also avoids the problem of potential safety hazards caused by the decrease in the flexural bearing capacity due to the splicing and assembly of long rod-shaped components.

[0019] 3. The end of the connecting steel wire rope of the present utility model is connected to the winding component. Through the cooperation of the two winding components on both sides, the horizontal position of the hoisting component can be adjusted, and thus it can better meet the hoisting requirements of different hoisted components. At the same time, the moving distance of the hook of the hoisting component is the same as the moving distance of the hoisted component, making the hoisting process simpler and easier to control, and greatly reducing the operation difficulty of the hoisting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Through the following detailed description in conjunction with the accompanying drawings, the above and / or other aspects and advantages of the present utility model will become clearer and easier to understand. These drawings are only schematic and do not limit the present utility model, where:

[0021] Figure 1 is a schematic structural diagram of a hoisting gantry related to the present utility model;

[0022] Figure 2 is a schematic structural diagram at the base of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the column extension section or the crossbeam extension section related to the present utility model.

[0024] Reference numerals: 1, column basic section; 2, column extension section; 3, base; 4, diagonal brace; 5, crossbeam basic section; 6, crossbeam extension section; 7, lifting assembly; 8, connecting steel wire rope; 9, pulley; 10, winding assembly. Specific embodiments

[0025] Hereinafter, an embodiment of a lifting gantry of the present utility model will be described with reference to the accompanying drawings. The embodiments described herein are specific specific embodiments of the present utility model for explaining the concept of the present utility model, and are all explanatory and exemplary, and should not be construed as limiting the embodiments of the present utility model and the scope of the present utility model. Except for the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of the present application. These technical solutions include technical solutions that make any obvious substitutions and modifications to the embodiments described herein.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "top", "bottom", "upper", "lower", "inner", "outer", "horizontal", "vertical", "upright", "oblique", 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 limiting the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] The drawings in this specification are schematic diagrams to assist in explaining the concept of the present utility model, and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of the various components of the embodiments of the present utility model, the drawings are not drawn in the same proportion. The same reference numerals are used to represent the same parts.

[0028] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model. The following combination of Figures 1-3 , a further detailed description of the preferred embodiments of the present utility model is as follows:

[0029] As Figure 1As shown in the figure, a preferred gantry crane of the present utility model includes columns, a crossbeam, and a lifting assembly 7. The columns are arranged in pairs, and the two columns arranged in pairs are fixedly connected to both ends of the crossbeam respectively to form a gantry structure. The lengths of the columns and the crossbeam are adjustable. The lifting assembly 7 is suspended below the crossbeam by connecting steel wires 8. The connecting steel wires 8 are arranged in pairs, and the two connecting steel wires 8 arranged in pairs are correspondingly arranged on both sides of the lifting assembly 7. One end of each connecting steel wire 8 is fixed on the lifting assembly 7, and the other end is fixed on the column on the same side;

[0030] Among them, the specific structural forms of the columns and the cross beams can be reasonably selected according to different lifting requirements. For example, steel sections with appropriate cross-sections can be directly used, or lattice columns or lattice beams with appropriate cross-sections can be used. The material selection and structural forms of the columns and the cross beams need to be determined through calculations. In order to better realize the length adjustment function of the two, in some embodiments, the column includes two column foundation sections 1. One ends of the two column foundation sections 1 close to each other are fixedly connected in a detachable manner, or one ends of the two column foundation sections 1 close to each other are fixedly connected in a detachable manner through at least one column extension section 2. The cross beam includes two cross beam foundation sections 5. One ends of the two cross beam foundation sections 5 close to each other are fixedly connected in a detachable manner, or one ends of the two cross beam foundation sections 5 close to each other are fixedly connected in a detachable manner through at least one cross beam extension section 6. When the two column foundation sections 1 are directly connected, the gantry is in the lowest height state. Therefore, the set length of the column foundation section 1 needs to be calculated according to the lowest required height at the construction site. The lengths of the two column foundation sections 1 can be equal or unequal. Equal lengths can be made by the same set of components, thereby reducing the manufacturing difficulty and cost. Unequal lengths need to consider the actual situation at the construction site. For example, the length of the upper column foundation section 1 can be reduced to reduce the assembly difficulty. The total height of the column can be increased by adding column extension sections 2 between the two column foundation sections 1. The number and type of the column extension sections 2 added between the two column foundation sections 1 also need to be determined according to actual needs. For example, multiple column extension sections 2 with the same size can be set according to the modulus, and the height increase requirement of the column can be met by multiple series-connected column extension sections 2. Of course, multiple column extension sections 2 with different lengths can also be set, and the height increase requirement of the column can be met by selecting one or more column extension sections 2 with different lengths, thereby reducing the number of connection nodes, reducing the assembly workload, and ensuring the overall structural strength of the column. The specific structural forms of the column foundation section 1 and the column extension section 2 (including but not limited to cross-sectional dimensions, cross-sectional forms, lengths, etc.) need to comprehensively consider the actual construction requirements at the site and be determined through safety calculations. Similarly, when the two cross beam foundation sections 5 are directly connected, the gantry will be in the narrowest state. Therefore, the length of the cross beam foundation section 5 needs to be determined according to the width of the narrowest lifting opening at the site. In order to ensure the balanced force of the gantry during the lifting process, the lengths of the two cross beam foundation sections 5 are preferably set to be equal. Of course, the total length (i.e., the span of the gantry) can also be increased by adding cross beam extension sections 6 between the two cross beam foundation sections 5. The number and type of the cross beam extension sections 6 added between the two cross beam foundation sections 5 also need to be confirmed according to actual construction needs. For example, the sizes of the construction openings at the site can be counted, and then the lengths of the cross beam extension sections 6 can be reasonably designed according to the size difference. Multiple series-connected cross beam extension sections 6 can be set according to the same modulus, or one or more cross beam extension sections 6 can be set according to different moduli.The specific structural forms of the crossbeam base section 5 and the crossbeam extension section 6 (including but not limited to cross-sectional dimensions, cross-sectional forms, lengths, etc.) need to comprehensively consider the actual construction requirements on site and be determined through safety calculations. During the assembly process, it is necessary to ensure that the axes of the column base sections 1 of the same column are collinear between the column base sections 1, between the column extension section 2 and the column base section 1, and that the axes of the crossbeam base sections 5 of the same crossbeam are collinear between the crossbeam base sections 5 and between the crossbeam base section 5 and the crossbeam extension section 6 to ensure the stable and reliable force transmission path;

[0031] As Figure 3 shown, for the convenience of assembly and the stable and reliable connection nodes, in some embodiments, the column base sections 1 are fixed between the column base sections 1, between the column base section 1 and the column extension section 2, between the crossbeam base sections 5, and between the crossbeam base section 5 and the crossbeam extension section 6 by means of flange connections. That is, flange plates and high-strength bolts are provided at the ends of the components on both sides of the corresponding connection nodes, and the detachable connection between the components is realized through the high-strength bolts and the flange plates;

[0032] As Figure 2 shown, in order to improve the support stability of the column, in some embodiments, a base 3 is fixedly provided at the bottom end of the column. The specific form of the base 3 can be determined according to the requirements of the actual project. For example, a support steel plate structure form can be selected, or a section steel segment vertically welded to the bottom end of the column can be selected. The base 3 can effectively increase the contact area between the column and the support surface and avoid the problem of the gantry crane tipping over due to instability;

[0033] During on-site construction, the lifting heights and positions of various lifting components are different. Therefore, in some cases, the lifting assembly 7 needs to adjust its lifting height and lateral position accordingly. To make the gantry more flexible and meet different construction requirements, in some embodiments, a pulley 9 is fixed at the top of the column, and a winding assembly 10 is fixedly installed at the lower part of the column. The connecting steel wire rope 8 bypasses the pulley 9 on the same-side column and is connected to the winding assembly 10. By adjusting the lengths of the connecting steel wire ropes 8 on the corresponding sides through the winding assemblies 10 on both sides, the lifting assembly 7 can be adjusted in terms of its lateral position and vertical height within the assembled gantry, avoiding the need to disassemble and reassemble the gantry every time the lifting position is changed, greatly improving the construction flexibility of the gantry. Of course, for the purpose of convenient on-site operation, the winding assembly 10 is preferably arranged at a position 1.0 - 1.5 m above the support structure surface of the column, that is, it is best to make the winding assembly 10 near the chest position of the operator, facilitating the construction workers to adjust the length of the connecting steel wire rope 8. Considering the purpose of use, the winding assembly 10 can adopt the structural form of a manual winch. When the manual winch rotates forward, the connecting steel wire rope 8 is relaxed to make the length of the connecting steel wire rope 8 extend, and when it rotates backward, the connecting steel wire rope 8 is tightened to make the length of the connecting steel wire rope 8 shorten. Of course, a locking part needs to be provided on the body of the manual winch, and the manual winch can be locked when it reaches the appropriate height to ensure the stable length of the connecting steel wire rope 8 during use. Of course, the manual winch can be replaced according to the procurement conditions of the construction project and other factors as long as it has the corresponding winding and locking functions;

[0034] For the purpose of convenient use, the lifting assembly 7 is preferably of the structural form of an electric hoist. The operator can control the lifting of materials by remote control according to the safety operation regulations, so as to reduce the operation difficulty and the labor intensity of the workers on the premise of achieving the lifting purpose. Of course, the lifting assembly 7 can also be replaced according to the procurement conditions of the construction project and other factors as long as it has the corresponding lifting function;

[0035] Since the columns and crossbeams of the gantry are in a assembled form, its overall stiffness will inevitably be reduced compared with the gantry assembled by columns and crossbeams in a whole-piece form. Therefore, diagonal braces 4 can be added between the base 3 and the columns, and between the columns and the crossbeams. The reinforcement is achieved by adding the diagonal braces 4, thereby improving the integrity of the entire gantry.

[0036] As described above, the columns and crossbeams of the gantry are long rod-shaped components in a assembled form. Components with this structural form often have the characteristics of strong axial compression resistance but weak bending resistance. To ensure the safety and stability of the gantry and avoid the risk of deformation or even overturning during construction, the technical solution adopted in this application does not directly fix the lifting assembly 7 on the crossbeam. Instead, the lifting assembly 7 is cleverly directly connected to the columns through the connecting steel wires 8 on both sides. In this way, the vertical force at the lifting assembly 7 will be transmitted to the gantry through the connecting steel wires 8 on both sides. The force on the inclined connecting steel wires 8 will be divided into two component forces. Its vertical component force directly acts on the columns and then is transmitted to the supporting surface through the columns. Since the axial compression resistance of the columns does not change much, therefore, it will not have an adverse impact on the overall stability of the gantry. At the same time, the horizontal component force on the connecting steel wires 8 will also be transmitted to the crossbeam in the form of axial pressure, thereby avoiding the generation of vertical shear force on the crossbeam and ensuring that the crossbeam will not be unstable.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lifting gantry, characterized in that: The invention comprises upright columns, a cross beam and a lifting assembly (7), wherein the upright columns are arranged in pairs, and the two upright columns arranged in pairs are correspondingly fixed at the two ends of the cross beam to form a portal structure, and the lengths of the upright columns and the cross beam are adjustable, and the lifting assembly (7) is suspended below the cross beam via a connecting steel wire rope (8), and the connecting steel wire rope (8) is arranged in pairs, and the two connecting steel wire ropes (8) arranged in pairs are correspondingly arranged on both sides of the lifting assembly (7), and one end of the connecting steel wire rope (8) is fixed to the lifting assembly (7), and the other end is fixed to the upright column on the same side.

2. A lifting gantry according to claim 1, characterized in that: The column comprises two column base sections (1), the ends of the two column base sections (1) close to each other are fixedly connected in a detachable manner, or the ends of the two column base sections (1) close to each other are fixedly connected in a detachable manner via at least one column extension section (2).

3. The lifting gantry according to claim 1, characterized in that: The crossbeam comprises two crossbeam base sections (5), and the ends of the two crossbeam base sections (5) close to each other are fixedly connected in a detachable manner, or the ends of the two crossbeam base sections (5) close to each other are fixedly connected in a detachable manner via at least one crossbeam extension section (6).

4. The lifting gantry according to claim 1, characterized in that: A pulley (9) is fixed on the top of the column, and a winding assembly (10) is fixedly installed on the bottom of the column. The connecting wire rope (8) passes around the pulley (9) on the column on the same side and is connected to the winding assembly (10).

5. The lifting gantry according to claim 4, characterized in that: The winding assembly (10) is arranged at a position where the column is 1.0-1.5 m above the supporting structure surface.

6. The lifting gantry according to claim 1, characterized in that: A base (3) is fixedly arranged at the bottom end of the column.

7. The lifting gantry according to claim 6, characterized in that: An oblique brace (4) is provided between the base (3) and the column.

8. The lifting gantry according to claim 1, characterized in that: A diagonal brace (4) is fixedly arranged between the upright column and the cross beam.

9. The lifting gantry according to claim 2, characterized in that: The column base sections (1) and the column base sections (1), and the column base sections (1) and the column extension sections (2) are all fixed by means of flange connections.

10. The lifting gantry according to claim 3, characterized in that: The cross beam base sections (5) and the cross beam base sections (5) and the cross beam extension sections (6) are fixed by means of flange connections.

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