Movable tower crane section foundation

Abstract

The utility model relates to a movable tower crane section foundation which comprises a roadbed box fixed on the ground, a connecting piece connected with a tower crane section is arranged at the top of the roadbed box, the roadbed box comprises an upper cover plate, a lower cover plate and a middle supporting beam, and the upper cover plate and the lower cover plate are customized according to the cross section size of the tower crane section. The middle supporting beam is a #-shaped supporting frame formed by welding H-shaped steel, and the middle supporting beam is welded with the upper cover plate and the lower cover plate; the connecting pieces and the tower crane section stand columns are correspondingly located on the upper cover plate, the bottoms of the connecting pieces are fixedly welded to the upper cover plate, and the tops of the connecting pieces are detachably connected with the lower ends of the tower crane section stand columns. The tower crane foundation can move relative to the ground and can be turned over in multiple projects; the foundation and the tower crane stand column are detachable and can be used in cooperation with a plurality of tower cranes, and therefore resource waste is reduced.

Description

Technical Field

[0001] The utility model belongs to the steel structure installation construction in building engineering, and particularly relates to a movable foundation of a tower crane. Background Art

[0002] The steel structure installation is the key line in the steel structure project, directly affecting the construction progress and quality of the main structure of the project. During the construction of a large-span steel structure roof, due to factors such as large volume and narrow site, when integral lifting or hoisting cannot be carried out, in order to ensure safety and quality during the structure construction, temporary supports need to be set under the large-span roof. At present, during the construction of a large-span steel structure roof, the components have a large span, large weight, and too small slenderness ratio of the components, resulting in easy deformation and instability of the components after being hoisted to the existing position. The existing method is to set temporary supports for tower crane sections in advance under the steel structure roof components. The temporary supports for tower crane sections have good stress conditions, can resist the deformation of steel components, and prevent the structure from becoming unstable. This leads to a large amount of use of temporary supports for tower crane sections, and the amount of use of temporary supports for tower crane sections continues to increase during the construction in sub-areas.

[0003] The existing temporary supports for tower crane sections need to set concrete foundations on the ground in advance and embed tower crane section connectors. Due to the long construction period of concrete and tower crane section embedded parts, they cannot be reused and cannot be flexibly adjusted in position. This leads to waste of resources on site and slows down the overall construction progress. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is the problems that the existing tower crane foundation has a long construction period, slows down the construction period, and causes waste of resources due to immobility.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows:

[0006] A movable tower crane section foundation, which includes a roadbed box fixed to the ground. A connector connected to the tower crane section is arranged on the top of the roadbed box. The roadbed box includes an upper cover plate, a lower cover plate and an intermediate support beam. The upper cover plate and the lower cover plate are customized according to the cross-sectional size of the tower crane section. The intermediate support beam is a cross-shaped support frame welded by H-shaped steel, and the intermediate support beam is welded to the upper cover plate and the lower cover plate. The connectors are respectively positioned on the upper cover plate corresponding to the tower crane section columns. The bottom of the connector is welded and fixed to the upper cover plate, and the top is detachably connected to the lower end of the tower crane section column.

[0007] The utility model adopting the above structure, compared with the prior art, has the following beneficial effects:

[0008] The utility model provides a steel structure tower crane foundation, which has a fast steel structure construction speed and can effectively reduce the construction time of the tower crane foundation, thereby saving construction period; the steel structure tower crane foundation provided by the utility model makes the tower crane foundation a movable structure relative to the ground, so that it can be turned around in multiple projects; the utility model designs a detachable connection structure between the foundation and the tower crane column, so that the foundation is a structure that can be used in conjunction with multiple tower cranes relative to the tower crane, thereby reducing resource waste.

[0009] As a preferred embodiment, a further technical solution of the above structure is:

[0010] The connecting parts include a supporting plate, a vertical plate, a perforated plate, a pin shaft and a vertical pin. The supporting plate is a flat steel plate fixedly welded to the top surface of the upper cover plate; the vertical plate is an angle steel with an L-shaped cross-section, and the lower end is vertically welded to the top surface of the supporting plate; the perforated plate is composed of a first orifice plate and a second orifice plate, and the first orifice plate and the second orifice plate are respectively fixedly welded to the top of the two side plates of the vertical plate, and the upper ends of the first orifice plate and the second orifice plate are both provided with axial holes, and the elevation of the axial hole of the first orifice plate is located above the axial hole of the second orifice plate; the pin shaft penetrates the axial holes of the first orifice plate and the second orifice plate from the outside, respectively, and the tail ends of the two pin shafts are arranged crosswise; the vertical pin is arranged at the intersection of the two pin shafts and penetrates the two pin shafts.

[0011] The beneficial effects obtained by the above features are as follows: the four connection points of the connector are customized according to the size of the standard section of the tower crane, ensuring the adaptability of the connection with the standard section; each column foot of the standard section is locked by a two-way pin to ensure the stability of the node, and this connector is very convenient for connecting or folding the connection node.

[0012] The first orifice plate and the second orifice plate are both composed of two layers of steel plates, the upper ends of the two layers of steel plates are welded together, and the lower ends are separated to form a slot, the slot is buckled on the upper end of the vertical plate, and the welding of the slot and the vertical plate is a full welding of the edge of the structural seam.

[0013] Beneficial effects obtained by the above features: In this solution, the perforated plate contacts the vertical plate in the form of double-sided wrapping, so that both sides can withstand stress and avoid cracking of the welding surface.

[0014] The pin shaft consists of a shaft rod and an end cap. The end cap is fitted to the outer wall of the perforated plate. A pin hole is provided at the tail end of the shaft rod. The distance between the pin hole and the inner wall of the perforated plate is adapted to the thickness of the tower crane section column. The tower crane section column is an L-shaped steel.

[0015] The beneficial effects obtained by the above features are as follows: the structural parts of this implementation are compactly combined, the components of the connection node are restrained to ensure the stability of the node, and the end caps and the vertical pins can prevent them from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall schematic diagram of the roadbed box and the connecting parts assembly;

[0017] Figure 2This is the three-dimensional structure diagram of the connecting piece of the utility model;

[0018] In the figure: 1, roadbed box; 101, upper cover plate; 102, support beam; 103, lower cover plate; 2, supporting plate; 3, vertical plate; 4, first perforated plate; 5, second perforated plate; 6, stiffening rib; 7, pin shaft; 8, vertical pin. Specific embodiments

[0019] The following further illustrates the present utility model in conjunction with embodiments. The purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0020] See Figure 1 and Figure 2 As shown, a mobile tower crane joint foundation includes a roadbed box 1 fixed to the ground. A connecting piece connected to the tower crane joint is provided at the top of the roadbed box 1.

[0021] The roadbed box 1 includes an upper cover plate 101, a lower cover plate 103 and an intermediate support beam 102. The upper cover plate 101 and the lower cover plate 103 are customized according to the cross-sectional size of the tower crane joint. The intermediate support beam 102 is a cross-shaped support frame welded by H-shaped steel, and the intermediate support beam 102 is welded to the upper cover plate 101 and the lower cover plate 103.

[0022] The connecting piece is respectively positioned on the upper cover plate 101 corresponding to the tower crane joint column. The bottom of the connecting piece is welded and fixed to the upper cover plate 101, and the top is detachably connected to the lower end of the tower crane joint column.

[0023] According to the project, the fixed position of the connecting piece is determined by lofting on the upper cover plate 101 of the roadbed box 1. Each connecting piece is used to connect to one column of the tower crane joint. The supporting plate 2 of the connecting piece is welded to the roadbed box 1, and the tower crane is fixed to the upper end of the connecting piece, so that the tower crane joint and the roadbed box 1 form an integral body.

[0024] Specifically, the connecting piece includes a supporting plate 2, a vertical plate 3, a perforated plate, a pin shaft 7 and a vertical pin 8.

[0025] The supporting plate 2 is a flat steel plate and is fixedly welded to the top surface of the upper cover plate 101.

[0026] The vertical plate 3 is an angle steel with an L-shaped cross section, and the lower end is vertically welded to the top surface of the supporting plate 2.

[0027] The perforated plate is composed of a first perforated plate 4 and a second perforated plate 5. The first perforated plate 4 and the second perforated plate 5 are respectively fixedly welded to the tops of the two side plates of the vertical plate 3. Both the upper ends of the first perforated plate 4 and the second perforated plate 5 are provided with shaft holes, and the elevation of the shaft hole of the first perforated plate 4 is above the shaft hole of the second perforated plate 5.

[0028] The pin shafts 7 respectively penetrate through the shaft holes of the first perforated plate 4 and the second perforated plate 5 from the outside, and the tails of the two pin shafts 7 are arranged in a cross shape;

[0029] The vertical pin 8 is arranged at the crossing position of the two pin shafts 7 and penetrates through the two pin shafts 7.

[0030] If the temporary support of the tower crane section is used up at the existing position and needs to be adjusted to a new position, the pin shaft 7 and the vertical pin 8 can be removed to separate the tower crane section from this foundation, and the steel structure foundation composed of the roadbed box 1 and the connecting piece can be adjusted in position. After reconnecting the tower crane section and the present utility model through the pin shaft 7 and the vertical pin 8, it can be put into use again. In this embodiment, the four connection points of the connecting piece are customized according to the size of the tower crane standard section, ensuring the connection adaptability with the standard section; each column foot of the standard section is locked by the bidirectional pin shaft 7 to ensure the stability of the node. It is very convenient to connect or disassemble the connection node with this connecting piece.

[0031] Optionally, both the first orifice plate 4 and the second orifice plate 5 are composed of two layers of steel plates. The upper ends of the two layers of steel plates are welded together, and the lower ends are separated to form a card slot. The card slot is buckled on the upper end of the vertical plate 3. The welding of the card slot and the vertical plate 3 is full welding at the edge of the structural seam. The orifice plate contacts the vertical plate 3 in the form of double-sided wrapping, enabling both sides to bear stress and avoiding the situation of cracking at the welding surface.

[0032] Optionally, stiffening ribs 6 are arranged on the outer side of the vertical plate 3. The vertical sides of the stiffening ribs 6 are welded to the vertical plate 3, and the bottom sides are welded to the supporting plate 2.

[0033] Optionally, the pin shaft 7 is composed of a shaft rod and an end cap. The end cap fits against the outer side wall of the orifice plate. A pin hole is provided at the tail end of the shaft rod. The distance between the pin hole and the inner side wall of the orifice plate is adapted to the thickness of the column plate of the tower crane section. The column of the tower crane section is an L-shaped steel. The combination of the structural members in this embodiment is compact, and the components at the connection node restrict each other, ensuring the stability of the node. Both the end cap and the vertical pin 8 can prevent detachment.

[0034] The construction method of the above-mentioned mobile tower crane section foundation is carried out according to the following steps:

[0035] First step, select steel sections with the same size and specification as the tower crane section as the main materials for the tooling.

[0036] Second step, perform cutting and welding on the tooling materials of the roadbed box 1 and the connecting piece.

[0037] Third step, open holes to form shaft holes on the orifice plate according to the size of the connection position of the tower crane section used on site.

[0038] Fourth step, weld hole reinforcing plates at the shaft hole positions.

[0039] Fifth step, weld the connecting piece to the upper cover plate 101 of the roadbed box 1, and the fixed position of the connecting piece corresponds to the internal support beam 102 of the roadbed box 1.

[0040] Sixth step, after the connecting piece is welded, weld stiffening ribs 6 around its root.

[0041] Step 7: When it is necessary to connect and use, insert the tower crane section column into the inner side of the vertical plate 3 and fit it with the first hole plate 4 and the second hole plate 5, then take two pins 7 and penetrate the first hole plate 4, the second hole plate 5 and the tower crane section column from the outside respectively. When the tail ends of the two pins 7 are staggered and the pin holes are coaxial, install the vertical pin 8. After all the columns and connectors are connected, the tower crane section is fixed to the foundation;

[0042] Step 8. When dismantling is required, install the lifting tool on the tower crane section, lift the vertical pin 8, and then pull out the pin shaft 7, and the tower crane section can be removed.

[0043] The movable steel structure foundation of the tower crane section designed by the utility model adopts a detachable device, which can be immediately dismantled after the temporary support of the tower crane section is used, and reused to the next use position, under the premise of limited site for the construction of large-span steel structure roof. The temporary support position of the tower crane section can be flexibly adjusted, which can perfectly cooperate with the construction of different areas, and all materials can be used in a turnover manner. The solution designed by the utility model does not require earth excavation, steel bar binding, embedded parts installation, foundation pouring and other processes, and can conveniently and quickly carry out the temporary support erection and installation of the tower crane section. The utility model also avoids the previous waiting time for the strength of the foundation concrete, speeds up the construction progress of the steel structure roof, reduces the labor intensity of the operators, and reduces the construction danger of the operators.

[0044] The steel structure foundation provided by the utility model can be moved on the ground, which solves the problems of small and limited construction sites for existing large-span steel structure roofs and slow and dangerous installation processes. The movable tower crane section steel structure foundation provided by the utility model will not damage the tower crane section even if it is used multiple times, and does not need to be repaired, which does not affect the construction quality. At the same time, it solves the problem of small construction sites for large-span steel structure roofs, limited sites, and the need for a large number of temporary supports for tower crane sections to be erected in different areas, which makes it impossible to turn around.

[0045] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A mobile tower crane section foundation, adapted to a steel tower crane section with an L-shaped column, characterized in that: It includes a roadbed box (1) fixed to the ground, and a connecting piece connected to the tower crane section is arranged on the top of the roadbed box (1). The roadbed box (1) includes an upper cover plate (101), a lower cover plate (103) and an intermediate support beam (102). The upper cover plate (101) and the lower cover plate (103) are customized according to the cross-sectional dimensions of the tower crane section. The intermediate support beam (102) is a cross-shaped support frame welded by H-shaped steel, and the intermediate support beam (102) is welded to the upper cover plate (101) and the lower cover plate (103). The connecting piece includes a bearing plate (2), a vertical plate (3), an opening plate, a pin shaft (7) and a vertical pin (8). The bearing plate (2) is a flat steel plate and is fixedly welded to the top surface of the upper cover plate (101). The vertical plate (3) is an angle steel with an L-shaped cross-section, and the lower end is vertically welded to the top surface of the bearing plate (2). The opening plate is composed of a first hole plate (4) and a second hole plate (5). The first hole plate (4) and the second hole plate (5) are respectively fixedly welded to the tops of the two side plates of the vertical plate (3). Shaft holes are provided at the upper ends of the first hole plate (4) and the second hole plate (5), and the elevation of the shaft hole of the first hole plate (4) is above the shaft hole of the second hole plate (5). The pin shafts (7) respectively penetrate through the shaft holes of the first hole plate (4) and the second hole plate (5) from the outside, and the tails of the two pin shafts (7) are arranged in a crossed manner. The vertical pin (8) is arranged at the crossed position of the two pin shafts (7) and penetrates through the two pin shafts (7).

2. The mobile tower crane foundation according to claim 1, wherein: Both the first hole plate (4) and the second hole plate (5) are composed of two layers of steel plates. The upper ends of the two layers of steel plates are welded together, and the lower ends are separated to form a clamping groove. The clamping groove is buckled on the upper end of the vertical plate (3), and the welding of the clamping groove and the vertical plate (3) is full welding at the edge of the structural joint.

3. The mobile tower crane foundation according to claim 1, characterized in that: Stiffening ribs (6) are arranged on the outside of the vertical plate (3). The vertical sides of the stiffening ribs (6) are welded to the vertical plate (3), and the bottom sides are welded to the bearing plate (2).

4. The mobile tower crane section foundation according to claim 1, characterized in that: The pin shaft (7) is composed of a shaft rod and an end cap. The end cap fits against the outer wall of the opening plate. A pin hole is provided at the tail end of the shaft rod, and the distance between the pin hole and the inner wall of the hole plate is adapted to the thickness of the column plate of the tower crane section.

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