CN114105016B - Brace rod combined type lower support - Google Patents

Abstract

The utility model provides a vaulting pole combination formula undersetting, includes the box, and the box is connected with floorbar and connecting rod through the vaulting pole, and the floorbar is in the same place through the connecting rod connection, is equipped with angle adjusting device between vaulting pole and floorbar and the connecting rod, is equipped with the connecting portion of being connected with angle adjusting device on the vaulting pole. The support rod combined type lower support is convenient for the transportation, the mounting and the dismounting of the lower support, and the number of times of air assembly is reduced; the stay bar adopts variable-section H-shaped steel, the middle of the web plate is hollowed, the weight is reduced, and the lightweight design concept is met; the lug III at the end part of the stay bar is integrally designed with the main beam, so that welding can be reduced, and the stress effect is better; when the stay bar is installed with the box body at high altitude, the angle of the stay bar can be adjusted, so that the installation is convenient; the upper part of the adjusting rod is connected with the supporting rod through a pin shaft, so that the supporting rod is prevented from being overturned due to overlarge angle.

Description

A brace combined lower support

technical field

The invention relates to the technical field of construction machinery, and specifically relates to a strut combined lower support.

Background technique

The slewing part is an important part of the tower crane. It will complete the rotation of the tower crane in the working face and play a key role in the normal operation of the tower crane. Compared with other parts of the tower crane, such as the lifting arm and the balance arm, the structure of the slewing part is relatively compact. It is mainly composed of the upper and lower slewing supports, slewing supports, slewing mechanisms, and other safety devices. , it will bear the weight and bending moment of the upper half of the entire tower crane, and play a key role in the safe operation of the entire tower crane. The slewing part of the conventional model is connected by the welded upper and lower supports through the slewing bearing, and the slewing can be packaged, installed and transported as a whole during installation and transition. However, compared with large-tonnage tower cranes, the welded upper and lower supports have a large amount of welding, which is easy to cause welding deformation, and it is difficult to control the installation size, resulting in difficulty in installation, and the overall welding weight is too large to be transported as a whole.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a strut combined lower support with simple structure and good effect.

The present invention is realized by the following technical scheme: a brace combined lower support, including a box, the box is connected with a bottom beam and a connecting rod through a brace, the bottom beam is connected together through a connecting rod, the An angle adjustment device is provided between the support bar, the bottom beam and the connecting rod, and a connection part connected with the angle adjustment device is provided on the support bar.

The further step is: two struts are connected to the bottom beam and the connecting rod, and the two struts form a triangle with the bottom beam or the connecting rod.

The strut is connected together with the box body and the bottom beam through the pin shaft I, and the strut is connected together with the connecting rod through the pin shaft II.

The bottom beam and the connecting rod are connected together through the pin shaft III.

The strut is made of H-shaped steel with variable cross-section, and the strut includes a bottom plate I, an ear plate I, a web, a sealing plate and an ear plate II, and the bottom plate I is arranged on both sides of the bottom plate I, and the ear plate I and the ear plate The ear plate II is arranged at both ends of the strut, and the web plate and the sealing plate are once connected between the ear plate I and the ear plate II.

The side surfaces of the ear plate I and the ear plate II are respectively provided with a veneer I and a veneer II, the middle part of the web is hollowed out, and a rib plate is provided in the middle of the ear plate II.

An ear plate III connected with the angle adjustment device is provided on the strut.

The angle adjusting device includes an adjusting rod arranged between the strut, the bottom beam and the connecting rod, and the adjusting rod is provided with bolts and nuts for adjusting the strut.

One end of the adjusting rod is arranged on the bottom beam and the connecting rod through the pin shaft, and the other end of the adjusting rod is connected with the support rod through the oblong hole and the pin shaft IV.

A base plate is provided at the end of the adjusting rod connected to the support rod, and a through hole for connecting a nut is provided on the base plate, and the bolt is used in cooperation with the nut.

The present invention has the following advantages: the brace combined lower support of the application facilitates the transportation, installation and disassembly of the lower support, and reduces the number of assembling in the air; Quantitative design concept; the integrated design of the lug plate Ⅲ at the end of the strut and the main beam can reduce welding, and the force effect is better; when the strut and the box are installed at high altitude, the angle of the strut can be adjusted to facilitate installation; The struts are connected by pin shafts to prevent the struts from tipping over due to excessive angles.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the schematic diagram of strut of the present invention;

Fig. 3 is a sectional view along the B-B direction in Fig. 2:

Fig. 4 is the schematic diagram that strut of the present invention is connected with adjusting bar;

Figure 5 is an enlarged schematic view of the structure along I in Figure 4:

In the figure: 1. Box body, 2. Pin shaft I, 3. Strut rod, 4. Bottom beam, 5. Pin shaft II, 6. Connecting rod, 7. Pin shaft III, 8. Adjusting rod, 9. Pin shaft Ⅳ, 10, bolt, 31, bottom plate Ⅰ, 32, ear plate Ⅰ, 33, pasting plate Ⅰ, 34, web plate, 35, sealing plate, 36, ear plate Ⅱ, 37, rib plate, 38, pasting plate Ⅱ, 39, ear plate III, 81, nut, 82, base plate.

Detailed ways

As shown in Fig. 1 to Fig. 5, a brace combined lower support includes a box body 1, and the box body 1 is connected with a bottom beam 4 and a connecting rod 6 through a brace bar 3, and the bottom beam 4 is connected through a connecting rod The rods 6 are connected together, an angle adjustment device is provided between the support rod 3 , the bottom beam 4 and the connecting rod 6 , and a connection part connected with the angle adjustment device is provided on the support rod 3 . Both the bottom beam 4 and the connecting rod 6 are connected with two struts 3 , and the two struts 3 form a triangle with the bottom beam 4 or the connecting rod 6 . The strut 3 is connected with the box body 1 and the bottom beam 4 through the pin shaft I2 , and the strut 3 is connected together with the connecting rod 6 through the pin shaft II5 . The bottom beam 4 and the connecting rod 6 are connected together through a pin shaft III7. The strut combined lower support of the present invention comprises a box body, a strut, a bottom beam and a connecting rod, the upper part of the box is connected with the slewing bearing, and the lower part is connected with the strut; The beam is used to connect the lower support with the standard section; the connecting rod is used for the connection between the bottom beams; specifically, the box is connected with the bottom beam and the connecting rod through the brace, and one end of the brace is connected to the box through the pin shaft I, and the brace The other end of the bottom beam is connected to the bottom beam through the pin shaft I and the pin shaft II. Two struts are connected to the bottom beam and the connecting rod. The two struts form a triangle with the bottom beam or the connecting rod. The connected structure is more stable. The rod is connected to the bottom beam through pin shaft III, and the angle adjustment device is connected between the support rod and the bottom beam or connecting rod. When installing the lower support, the support rod, bottom beam and connecting rod can be installed on the ground through the pin shaft and then integrated Hoisting, followed by installation of the box in the air, at the same time, the angle adjustment device set between the brace and the bottom beam or connecting rod can adjust the angle during the installation of the brace, reducing the angle error generated during the installation of the brace and improving The installation accuracy of the lower support.

As shown in Figures 1 to 5, a brace combined lower support, the brace 3 is made of H-shaped steel with variable cross-section, and the brace 3 includes a bottom plate I31, an ear plate I32, a web 34, a sealing plate 35 and ear plate II36, the bottom plate I31 is arranged on both sides of the bottom plate I31, the ear plate I32 and ear plate II36 are arranged at both ends of the strut 3, and the web is connected once between the ear plate I32 and ear plate II36 34 and sealing plate 35. The side surfaces of the ear plate I32 and the ear plate II36 are respectively provided with a plate I33 and a plate II38, the middle part of the web 34 is hollowed out, and a rib plate 37 is provided in the middle of the ear plate II36. The strut 3 is provided with an ear plate III 39 connected with the angle adjustment device. The strut structure of the present invention is a variable cross-section H-shaped steel spliced by plates, the bottom plate is a variable cross-section plate, the ear plate I32 and the main body of the strut 3 are integrally designed, and the pasting plate I33 is welded on both sides of the ear plate I32 to strengthen the ear. Plate Ⅰ, web 34 is welded between the paste plate Ⅰ 33 and the sealing plate 35, used to strengthen the strut, considering the lightweight design, the middle part of the web is hollowed out; one end of the sealing plate 35 is welded to the ear plate Ⅱ 36, and the other end is connected to the web 34 and lug plate I32 are used to transmit the force borne by lug plate II36; lug plate II36 is used to connect the lower support box body 1, and rib plate 37 is welded in the middle of lug plate II36 to support lug plate II36 and prevent internal Water; the paste plate II38 is welded on both sides of the ear plate II36, which is used to strengthen the ear plate II; the integrated design of the end ear plate I and H-shaped steel realizes the lightweight design, and the integrated design can also reduce welding and force effects better.

As shown in Figures 1 to 5, a brace combined lower support, the angle adjustment device includes an adjustment rod 8 arranged between the brace 3, the bottom beam 4 and the connecting rod 6, the adjustment rod 8 Bolts 10 and nuts 81 for adjusting the strut 3 are arranged on it. One end of the adjusting rod 8 is fixed on the bottom beam 4 and the connecting rod 6 through a pin, and the other end of the adjusting rod 8 is connected with the strut 3 through an oblong hole and a pin IV9. A bottom plate 82 is provided at one end of the adjustment rod 8 connected to the support rod 3 , and a through hole for connecting a nut 81 is provided on the bottom plate 82 , and the bolt 10 is used in conjunction with the nut 81 . The angle adjustment device of the present invention is an adjustment rod arranged between the support rod and the bottom beam or the connecting rod. The adjustment rod is connected to the upper part of the bottom beam or the connecting rod through the pin shaft, and the upper part of the adjustment rod is welded with the lug plate of the support rod through the pin shaft IV. Ⅲ is connected, the hole connecting the adjusting rod and ear plate Ⅲ should be a long hole, so as not to affect the adjustment of the angle of the strut, the nut needs to be welded to the through hole of the bottom plate of the adjusting rod, at this time, the angle of the strut can be adjusted by the tightness of the bolt , and the adjustment rod is connected with the support rod through the pin shaft IV, which can prevent the support rod from tipping over due to an excessive angle.

The lower support of the present invention adopts a strut combined structure, and the lower support adopts a strut combined structure, which is convenient for transportation, installation and disassembly of the lower support; the strut adopts a variable cross-section H-shaped steel, and if a conventional H-shaped steel is used, the strength will be insufficient Or waste materials, etc.; the integrated design of lug plate III at both ends of the strut and variable cross-section H-shaped steel reduces the overall weight, reduces the amount of welding, and effectively improves production efficiency; the adjustment rod can be adjusted when the strut and the box are installed. The installation angle of the pole is convenient for the installation of the support box and the strut, effectively improving the installation efficiency of the strut, and the adjustment rod and the strut are connected by a pin shaft, which can prevent the danger of the strut from tipping due to an excessive angle. When super large tonnage tower cranes install the lower support rod, the nut is welded on the adjustment rod, and the bolt is installed on the nut. The angle of the rod can be adjusted by tightening the bolt. The pole is tilted, which solves the problem that the installation of the lower support is affected by the angle error of the pole when the weight of the pole is too heavy.

Claims (8)

1. A strut combined lower support, characterized in that it includes a box (1), the box (1) is connected with a bottom beam (4) and a connecting rod (6) through a strut (3), The bottom beam (4) is connected together by a connecting rod (6), and an angle adjustment device is provided between the support rod (3), the bottom beam (4) and the connecting rod (6), and the support rod (3 ) is provided with a connecting part connected with the angle adjustment device; the strut (3) is made of H-shaped steel with variable cross-section, and the strut (3) includes a bottom plate I (31), an ear plate I (32), a web (34), sealing plate (35) and ear plate II (36), the bottom plate I (31) is arranged on both sides of the strut (3), the ear plate I (32) and ear plate II (36) It is arranged at both ends of the strut (3), and the web (34) and the sealing plate (35) are once connected between the ear plate I (32) and the ear plate II (36); the ear plate I (32) And the side of the ear plate II (36) are respectively provided with the plate I (33) and the plate II (38), the middle part of the web (34) is hollowed out, and the middle of the ear plate II (36) is provided with a rib plate (37). 2. A brace combined lower support according to claim 1, characterized in that two braces (3) are connected to the bottom beam (4) and the connecting rod (6), two The strut (3) forms a triangle with the bottom beam (4) or the connecting rod (6). 3. A brace combined lower support according to claim 2, characterized in that: the brace (3) is connected to the box body (1) and the bottom beam (4) through the pin shaft I (2) Together, the struts (3) are connected together through the pin shaft II (5) and the connecting rod (6). 4 . The brace combined lower support according to claim 1 , characterized in that: the bottom beam ( 4 ) and the connecting rod ( 6 ) are connected together by a pin shaft III ( 7 ). 5 . The brace combined lower support according to claim 1 , characterized in that: the brace ( 3 ) is provided with an ear plate III ( 39 ) connected to an angle adjustment device. 5 . 6. A brace combined lower support according to claim 1, characterized in that: said angle adjustment device includes a set between the brace (3) and the bottom beam (4) and connecting rod (6) The adjusting rod (8) is provided with a bolt (10) and a nut (81) for adjusting the strut (3). 7. A brace combined lower support according to claim 6, characterized in that: one end of the adjustment rod (8) is arranged on the bottom beam (4) and the connecting rod (6) through a pin shaft, The other end of the adjusting rod (8) is connected with the strut (3) through the oblong hole and the pin shaft IV (9). 8. A support rod combined lower support according to claim 6, characterized in that: a bottom plate (82) is provided at the end of the adjustment rod (8) connected to the support rod (3), and the bottom plate ( 82) is provided with a through hole for connecting the nut (81), and the bolt (10) is used in conjunction with the nut (81).

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