Folding fan precision control intelligent installation bracket

Abstract

The present application relates to a kind of precision control intelligent installation bracket of folding fan shape, comprising: folding fan shape precision adjusting device, bottom plate, fixed structure and power device, fixed structure is supported in bottom plate below, fixed structure bottom is connected with arch rib support, the surface of bottom plate is provided with threaded hole along length direction, threaded hole both sides are respectively provided with pulley groove with reading scale.The beneficial effects of the present application are: by setting multiple folding fan shape precision adjusting device on a bottom plate to generate multiple linear control points, increase the contact area of folding fan shape precision control intelligent installation bracket and arch rib arch axis, increase the stability of linear adjustment process;By power device, the opening degree of folding fan shape precision adjusting device is dynamically adjusted to achieve the purpose of controlling each point elevation, the linear adjustment precision that can be carried out is obviously improved compared with traditional adjustment method;Scale reading is set on the side of bottom plate pulley groove, which can reduce the dependence on instruments such as level, and facilitate to ensure adjustment accuracy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel box arch rib assembly construction, and particularly relates to a precision control intelligent installation bracket for a folded fan shape. BACKGROUND

[0002] The beam-arch combined system bridge is one of the commonly used structural systems in long-span bridge engineering, has the performance advantages of beautiful appearance and balanced structural stress, and the linear control of the arch rib plays a key role in the smooth closure of the bridge during the construction of the beam-arch combined system bridge, thereby ensuring the smooth completion of the system conversion of the whole bridge.

[0003] There are three arch rib construction methods, namely the cable hoisting method, the swivel construction method and the in-situ assembly method. The in-situ assembly method refers to erecting an in-situ assembly support on the bridge deck, and using a gantry crane to hoist and transport the arch rib segments in sequence to the assembly support to complete the assembly of the arch rib. The in-situ assembly method usually needs to carry out arch rib assembly work on the basis of the completion of continuous beam construction, and the assembly of each segment of the arch rib will cause the state of the hoisted segment to be disturbed. During the construction of the bridge, in order to avoid accidents of the arch rib structure during assembly, construction personnel need to carry out linear control work on key points, and timely process abnormal linear. The traditional linear adjustment method for the in-situ assembly method is to set adjustment pads on the top of the three-dimensional steel support pier connected by a single arch rib support, but it often has the following problems: first, the adjustment pad is usually a fixed-size component, and the linear control precision required by the arch rib installation is high, but the precision control of the adjustment pad is limited; second, the adjustment pad is usually a cube shape, and the contact area between the adjustment pad and the arch rib is relatively narrow during the installation of the arch rib, and it cannot be completely fitted; third, the adjustment basis height of the adjustment pad depends on the height of the support, and the linear control point elevation needs to be calculated with the aid of a level instrument; fourth, the installation of the adjustment pad on the upper part of the support has certain danger, which increases the safety risk of the construction personnel. SUMMARY

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and provide a precision control intelligent installation bracket for a folded fan shape.

[0005] The precision control intelligent installation bracket for a folded fan shape comprises a precision adjustment device for a folded fan shape, a bottom plate, a fixed structure and a power device, the fixed structure is supported below the bottom plate, the bottom of the fixed structure is connected with an arch rib support, the surface of the bottom plate is provided with a threaded hole along the length direction, and the threaded hole is provided with a pulley groove with a reading scale on both sides;

[0006] The precision adjustment device for a folded fan shape comprises a vertical plate and an inclined plate, the vertical plate and the inclined plate are connected through a shaft one and a shaft two to form a folded fan shape structure, the vertical plate is provided with a pulley at the bottom, the pulley is arranged in the pulley groove, and the vertical plate is further provided with a dynamic adjustment threaded hole at the bottom;

[0007] The folding fan-shaped precision adjusting device is arranged on the bottom plate, and a worm is arranged on each side of the power device, the lower part of the two worms of the power device is embedded into the threaded hole on the surface of the bottom plate, and the upper part is embedded into the dynamic adjusting threaded hole at the bottom of the two vertical plates respectively, and the pulley at the bottom of the folding fan-shaped precision adjusting device moves in the pulley groove through the power device.

[0008] As preferred, a U-shaped steel block and a ball hinge rod are arranged in the dynamic adjusting threaded hole, the U-shaped steel block is an arch shape matching the size of the dynamic adjusting threaded hole, a plurality of insertion grooves are arranged on the wall surface of the dynamic adjusting threaded hole, a ball groove corresponding to the insertion groove is arranged on the outer surface of the U-shaped steel block, the ball hinge rod comprises a ball hinge and a connecting rod, the ball hinge is arranged at the two ends of the connecting rod, and the ball hinges at the two ends of the ball hinge rod are respectively inserted into the insertion groove of the dynamic adjusting threaded hole and the ball groove on the outer surface of the U-shaped steel block; a screw thread is arranged on the inner surface of the U-shaped steel block, and the upper part of the worm of the power device matches the screw thread on the inner surface of the U-shaped steel block.

[0009] As preferred, n folding fan-shaped precision adjusting devices are arranged on the bottom plate, and a total of 4n pulley grooves are arranged on the bottom plate, that is, two pulleys connected by each vertical plate move synchronously, and the two vertical plates in each folding fan-shaped precision adjusting device move symmetrically, and a reading scale is arranged on the side of the pulley groove.

[0010] As preferred, the two inclined plates are connected through a rod shaft I, and the vertical plates are connected through rod shafts II on the two sides of the two connected inclined plates.

[0011] As preferred, the fixing structure comprises a lateral stiffening rib and a fixing support, the fixing support is supported at the bottom of the bottom plate, and the lateral stiffening rib is arranged at the connection between the two sides of the bottom plate and the fixing support.

[0012] The use method of the folding fan-shaped precision control intelligent installation bracket comprises the following steps:

[0013] S1, after the steel truss part of the beam-arch combined system steel structure bridge is constructed, the arch rib support is installed at the fixed position according to the need;

[0014] S2, the folding fan-shaped precision control intelligent installation bracket is installed on the top of the arch rib support, and each folding fan-shaped precision adjusting device is pre-adjusted;

[0015] S3, the arch rib is lifted by a crane, the bottom of the arch rib is in contact with the top of the intelligent bracket device, each folding fan-shaped precision adjusting device forms a linear control point of the arch rib at the top end, the elevations of the linear control points are calculated, and the calculated elevations are compared with the requirements in the drawing;

[0016] S4, according to the calculated height and the difference between the drawing requirements, the power device is used to move the pulley at the bottom of the folding fan-shaped precision adjusting device in the pulley groove, the opening and closing degree of the folding fan-shaped precision adjusting device is adjusted, the height of the top end of the folding fan-shaped precision adjusting device is changed, and the height of the linear control point of the arch rib is matched with the drawing requirements.

[0017] Preferably, the height of each linear control point in the drawing requirements is h 控制点 , h 控制点 The calculation formula is:

[0018] h 控制点 =h2+h3+h4+h5

[0019]

[0020] Wherein, x1 represents half of the horizontal distance of the two vertical plates in the folding fan-shaped precision adjusting device in step S3, Δx represents the difference between x1 and half of the horizontal distance of the two vertical plates required by the drawing requirements, l represents the length of the inclined plate, h2 represents the vertical height of the inclined plate, h3 represents the vertical height of the vertical plate, h4 represents the thickness of the bottom plate, and h5 represents the sum of the height of the fixed structure and the arch rib support;

[0021] In step S4, after calculating Δx according to the above formula, the vertical plates on both sides of the folding fan-shaped precision adjusting device that need to be adjusted are respectively displaced by Δx through the power device, so that the height of the linear control point is matched with the drawing requirements.

[0022] The beneficial effects of the present application are:

[0023] 1) The present application can realize the assembly type connection of the folding fan-shaped precision control device, realize the direct on-site assembly after the precision control device is prefabricated in the factory, and can be mass-produced, has strong adaptability and is easy to install.

[0024] 2) The present application generates multiple linear control points by setting multiple folding fan-shaped precision adjusting devices on a bottom plate, increases the contact area of the folding fan-shaped precision control intelligent installation bracket and the arch rib axis, and increases the stability of the linear adjustment process.

[0025] 3) The present application dynamically adjusts the opening and closing degree of the folding fan-shaped precision adjusting device through the power device, so as to control the height of each point, and the linear adjustment precision can be obviously improved compared with the traditional adjustment method.

[0026] 4) The present application sets a scale reading on the side of the bottom plate pulley groove, can directly calculate the control point height according to the mathematical relationship through the change of the scale reading, can reduce the dependence on instruments such as level meters, and is convenient for ensuring the adjustment precision.

[0027] 5) The installation method is simple, and compared with the traditional adjustment method, the construction safety risk can be greatly reduced, and the life safety of construction personnel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the application;

[0029] Figure 2 is a side view schematic diagram of the overall device structure of the application;

[0030] Figure 3 is a front view schematic diagram of the overall device structure of the application;

[0031] Figure 4 is a top view schematic diagram of the bottom plate of the application;

[0032] Figure 5 is a schematic diagram of the upper folding fan-shaped structure under one perspective;

[0033] Figure 6 is a schematic diagram of the upper folding fan-shaped structure under another perspective;

[0034] Figure 7 is an enlarged schematic diagram of the dynamic adjustment screw hole of the application;

[0035] Figure 8 is a schematic diagram of the structure of the ball groove of the application;

[0036] Figure 9 is a schematic diagram of the structure of the ball hinge rod of the application;

[0037] Figure 10 Intelligent installation bracket construction schematic Figure 1 ;

[0038] Figure 11 Intelligent installation bracket construction schematic Figure 2 ;

[0039] Figure 12 Intelligent installation bracket construction schematic Figure 3 ;

[0040] Figure 13 Intelligent installation bracket line type adjustment partial enlarged schematic diagram;

[0041] Figure 14 Line type control point calculation brief schematic diagram.

[0042] BRIEF DESCRIPTION OF DRAWINGS: folding fan-shaped precision adjustment device 1, bottom plate 2, fixed structure 3, pulley groove 4, reading scale 5, power device 6, threaded hole 7, dynamic adjustment threaded hole 8, pulley 9, vertical plate 10, inclined plate 11, rod shaft one 12, rod shaft two 13, U-shaped steel block 14, ball hinge rod 15, ball groove 16, ball hinge 17, connecting rod 18, lateral stiffening rib 31, fixed support 32. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the following examples. The following examples are provided only to facilitate understanding of the present invention. It should be noted that, without departing from the principles of the present invention, it is possible for a person skilled in the art to make various modifications to the present invention, and such improvements and modifications fall within the scope of the claims of the present invention.

[0044] Example 1

[0045] As an example, Figures 1 to 9 As shown, this fan-shaped precision control intelligent mounting bracket includes: a fan-shaped precision adjustment device 1, a base plate 2, a fixed structure 3 and a power device 6. The fixed structure 3 is supported under the base plate 2. The bottom of the fixed structure 3 is connected to the arch rib bracket. The fixed structure 3 includes lateral stiffening ribs 31 and fixed supports 32. The fixed supports 32 are supported at the bottom of the base plate 2. The lateral stiffening ribs 31 are arranged at the connection between the bottom of the base plate 2 and the fixed supports 32 on both sides. The fixed supports 32 are round steel pipes whose dimensions depend on the cross-sectional parameters of the bracket, ensuring that the circular sleeve fits on the top of the bracket and plays a role in fixing the entire device. The base plate 2 is a cubic steel plate welded to the upper part of the circular sleeve, and lateral stiffening ribs 31 are arranged on both sides to increase the stability of the structure.

[0046] like Figure 4 As shown, a threaded hole 7 is provided on the surface of the base plate 2 along the length direction, and pulley grooves 4 with reading scales 5 are provided on both sides of the threaded hole 7; the length direction of the pulley groove 4 is also parallel to the length direction of the base plate 2.

[0047] like Figures 5 to 9 As shown, a pair of pulleys 9 are provided at the bottom of the vertical plate 10 , and the two pulleys 9 are respectively arranged in the pulley grooves 4 on both sides of the threaded hole 7 . A dynamic adjustment threaded hole 8 is also provided at the bottom of the vertical plate 10 .

[0048] A plurality of fan-shaped precision adjusting devices 1 are arranged on a base plate 2, which are used to contact with the arch rib to generate a plurality of linear control points, increase the contact area of the fan-shaped precision control intelligent installation bracket with the arch rib arch axis, and increase the stability of the linear adjustment process. The fan-shaped precision adjusting device 1 comprises a vertical plate 10 and an inclined plate 11, the vertical plate 10 and the inclined plate 11 are connected by a shaft 12 and a shaft 13 to form a fan-shaped structure, the two inclined plates 11 are hingedly connected by the shaft 12, and the two hingedly connected inclined plates 11 are respectively hingedly connected by the shaft 13 on both sides of the vertical plate 10. When the pulley 9 at the bottom of the fan-shaped precision adjusting device 1 moves in the pulley groove 4 by the power device 6, the fan-shaped precision adjusting device 1 changes the opening and closing state with the distance change of the two vertical plates 10, and when the distance between the vertical plates 10 increases, the two inclined plates 11 open to each other, and the height of the top end of the fan-shaped precision adjusting device 1 decreases, and when the distance between the vertical plates 10 decreases, the two inclined plates 11 are folded to each other, and the height of the top end of the fan-shaped precision adjusting device 1 increases.

[0049] The fan-shaped precision adjusting device 1 is arranged on the base plate 2, the power device 6 is provided with a worm, the lower part of the worm of the power device 6 is embedded into the threaded hole 7 on the surface of the base plate 2, and the upper part is embedded into the dynamic adjustment threaded hole 8 at the bottom of the vertical plate 10. According to the weight of the arch rib of the engineering structure, a suitable power device 6 is selected.

[0050] A U-shaped steel block 14 and a ball hinge rod 15 are arranged in the dynamic adjustment threaded hole 8, a plurality of insertion grooves are arranged on the wall surface of the dynamic adjustment threaded hole 8, a ball groove 16 corresponding to the insertion groove is arranged on the outer surface of the U-shaped steel block 14, the ball hinge rod 15 comprises a ball hinge 17 and a connecting rod 18, the ball hinge 17 is arranged at both ends of the connecting rod 18, and the ball hinges 17 at both ends of the ball hinge rod 15 are respectively inserted into the insertion groove of the dynamic adjustment threaded hole 8 and the ball groove 16 on the outer surface of the U-shaped steel block 14; it is ensured that when the upper part of the fan-shaped precision adjusting device 1 changes the angle, the ball hinge rod 15 changes the direction, but the dynamic adjustment threaded hole 8 does not deviate. The inner surface of the U-shaped steel block 14 is provided with a thread, and the upper part of the worm of the power device 6 matches the thread on the inner surface of the U-shaped steel block 14.

[0051] The bottom plate 2 is provided with n folding fan-shaped precision adjusting devices 1, and the bottom plate 2 is provided with 4n pulley grooves 4 in total, two vertical plates 10 in each folding fan-shaped precision adjusting device 1 share one power device 6, one worm is derived on each side of the power device 6 and matched with the dynamic adjusting screw holes 8 at the bottom of the two vertical plates 10 on the side, when the power device 6 is started, the two vertical plates 10 in each folding fan-shaped precision adjusting device 1 are synchronously moved through the self-rotation of the worm, but the moving directions are opposite or the same, the pulleys 9 at the bottom of the folding fan-shaped precision adjusting device 1 are moved in the pulley grooves 4 through the power device 6, that is, the two pulleys 9 connected with each vertical plate 10 are synchronously moved, the reading scale 5 is arranged on the side of the pulley groove, which is convenient for accurately positioning when the position of the vertical plate 10 is adjusted through the power device 6, and is also convenient for calculating the current height of the folding fan-shaped precision adjusting device 1.

[0052] Embodiment two

[0053] As another embodiment, the use method of the folding fan-shaped precision control intelligent installation bracket proposed in embodiment one comprises the following steps:

[0054] S1, after the steel truss part of the beam-arch combined system steel structure bridge is constructed, the arch rib support is installed at a fixed position according to needs; as shown in Figure 10 .

[0055] S2, the folding fan-shaped precision control intelligent installation bracket is installed on the top of the arch rib support, and each folding fan-shaped precision adjusting device 1 is pre-adjusted; as shown in Figure 11 .

[0056] S3, the arch rib is hoisted by a crane, the bottom of the arch rib is contacted with the top of the intelligent bracket device, the top of each folding fan-shaped precision adjusting device 1 forms the linear control points of the arch rib, as shown in Figure 12 and Figure 13 . The elevations of the linear control points are calculated, and the calculated elevations are compared with the requirements in the drawing;

[0057] S4, according to the difference between the calculated elevations and the requirements in the drawing, the pulleys 9 at the bottom of the folding fan-shaped precision adjusting device 1 are moved in the pulley grooves 4 through the power device 6, the opening and closing degree of the folding fan-shaped precision adjusting device 1 is adjusted, the elevation of the top of the folding fan-shaped precision adjusting device 1 is changed, and the elevations of the linear control points of the arch rib are matched with the requirements in the drawing.

[0058] Specifically, the elevations of the linear control points in the drawing are h 控制点 , and the calculation formula of h 控制点 is:

[0059] h 控制点 =h2+h3+h4+h5

[0060]

[0061] Wherein, x1 represents half of the horizontal distance between the two vertical plates 10 in the fan-shaped precision adjustment device 1 in step S3, Δx represents the difference between x1 and half of the horizontal distance between the two vertical plates 10 required by the drawing, l represents the length of the oblique plate 11, h2 represents the vertical height of the oblique plate 11, h3 represents the vertical height of the vertical plate 10, h4 represents the thickness of the bottom plate 2, and h5 represents the sum of the heights of the fixed structure 3 and the arch rib support;

[0062] Since the heights of the vertical plates 10, the base plate 2, the fixed structure 3 and the arch rib supports are all fixed, the elevation changes at the top of the fan-shaped precision adjustment device 1 all come from the vertical height h2 of the inclined plates 11. When the distance between the vertical plates 10 increases, the two inclined plates 11 open to each other, and the vertical height of the inclined plates 11 decreases. When the distance between the vertical plates 10 decreases, the two inclined plates 11 close to each other, and the vertical height of the inclined plates 11 increases.

[0063] like Figure 14 As shown, the two folding fan-shaped precision adjustment devices 1 can be regarded as the states before and after adjustment. Before adjustment, half of the horizontal distance between the two vertical plates 10 in the folding fan-shaped precision adjustment device 1 is x1. At this time, the vertical height of the oblique plate 11 is h1, and the drawing requires the vertical height of the oblique plate 11 to be h2. Therefore, it is necessary to move the two vertical plates 10 by Δx respectively on the basis of x1.

[0064] Therefore, when the elevation of each linear control point in the drawing is determined to be h 控制点 Then, according to the opening and closing state data of the current folding fan-shaped precision adjustment device 1, Δx can be calculated using the Pythagorean theorem. The vertical plates 10 on both sides of the folding fan-shaped precision adjustment device 1 that needs to be adjusted are displaced by Δx through the power device 6, and the vertical plates 10 on both sides are moved symmetrically toward or away from each other, so that the elevation of the linear control point can match the requirements of the drawing.

Claims

1. A method for using a folding fan-shaped precision-controlled intelligent mounting bracket, characterized in that: include: A folding fan-shaped precision adjustment device (1), a base plate (2), a fixed structure (3) and a power device (6), wherein the fixed structure (3) is supported below the base plate (2), the bottom of the fixed structure (3) is connected to an arch rib bracket, a threaded hole (7) is provided on the surface of the base plate (2) along the length direction, and pulley grooves (4) with reading scales (5) are respectively provided on both sides of the threaded hole (7); The folding fan-shaped precision adjustment device (1) comprises a vertical plate (10) and an oblique plate (11), wherein the vertical plate (10) and the oblique plate (11) are connected via a first rod shaft (12) and a second rod shaft (13) to form a folding fan-shaped structure, a pulley (9) is provided at the bottom of the vertical plate (10), the pulley (9) is arranged in a pulley groove (4), and a dynamic adjustment threaded hole (8) is also provided at the bottom of the vertical plate (10); A fan-shaped precision adjustment device (1) is provided on a base plate (2), and a worm is provided on each side of a power device (6). The lower portions of the two worms of the power device (6) are embedded in threaded holes (7) on the surface of the base plate (2), and the upper portions are embedded in dynamic adjustment threaded holes (8) at the bottoms of two vertical plates (10). A pulley (9) at the bottom of the fan-shaped precision adjustment device (1) moves in a pulley groove (4) through the power device (6). A U-shaped steel block (14) and a ball hinge rod (15) are provided in the dynamic adjustment threaded hole (8), and a plurality of slots are provided on the wall surface of the dynamic adjustment threaded hole (8). The outer ring surface of the U-shaped steel block (14) is provided with a ball groove (16) corresponding to the slot. The ball hinge rod (15) includes a ball hinge (17) and a connecting rod (18). Both ends of the connecting rod (18) are provided with a ball hinge (17). The ball hinges (17) at both ends of the ball hinge rod (15) are respectively inserted into the slot of the dynamic adjustment threaded hole (8) and the ball groove (16) on the outer ring surface of the U-shaped steel block (14); the inner ring surface of the U-shaped steel block (14) is provided with a thread, and the upper part of the worm of the power device (6) matches the thread on the inner ring surface of the U-shaped steel block (14); The bottom plate (2) is provided with n folding fan-shaped precision adjustment devices (1), and a total of 4n pulley grooves (4) are provided on the bottom plate (2), that is, the two pulleys (9) connected to each vertical plate (10) move synchronously, and the two vertical plates (10) in each folding fan-shaped precision adjustment device (1) move symmetrically, and a reading scale (5) is provided on the side of the pulley groove; The two oblique plates (11) are hingedly connected via a first rod shaft (12), and both sides of the two hingedly connected oblique plates (11) are hingedly connected to a vertical plate (10) via a second rod shaft (13). The method comprises the following steps: S1. After the steel truss beam of the beam-arch combined steel structure bridge is completed, the arch rib bracket is installed at a fixed position as needed; S2. Install a fan-shaped precision control intelligent installation bracket on the top of the arch rib support; and pre-adjust each fan-shaped precision adjustment device 1; S3, lifting the arch rib by a crane, and after the bottom of the arch rib contacts the top of the intelligent bracket device, each linear control point of the arch rib is formed at the top of each folding fan-shaped precision adjustment device (1); Calculate the elevation of each linear control point and compare the calculated elevation with the drawing requirements; S4. Based on the difference between the calculated elevation and the drawing requirements, the pulley (9) at the bottom of the folding fan-shaped precision adjustment device (1) is moved in the pulley groove (4) by the power device (6), and the opening and closing degree of the folding fan-shaped precision adjustment device (1) is adjusted to change the elevation of the top end of the folding fan-shaped precision adjustment device (1) until the elevation of the arch rib linear control point matches the drawing requirements.

2. The method for using the fan-shaped precision-controlled intelligent mounting bracket according to claim 1, characterized in that: The fixed structure (3) comprises lateral stiffening ribs (31) and a fixed support (32), wherein the fixed support (32) is supported on the bottom of the base plate (2), and the lateral stiffening ribs (31) are arranged at the connection between the two sides of the bottom of the base plate (2) and the fixed support (32).

3. The construction method of the fan-shaped precision-controlled intelligent mounting bracket according to claim 1, characterized in that: The elevation of each linear control point in the drawing requirement is h 控制点 , h 控制点 The calculation formula is: h 控制点 =h2+h3+h4+h5 Wherein, x1 represents half of the horizontal distance between the two vertical plates (10) in the fan-shaped precision adjustment device (1) in step S3, Δx represents the difference between x1 and half of the horizontal distance between the two vertical plates (10) required by the drawing, l represents the length of the inclined plate (11), h2 represents the vertical height of the inclined plate (11), h3 represents the vertical height of the vertical plate (10), h4 represents the thickness of the bottom plate (2), and h5 represents the sum of the heights of the fixed structure (3) and the arch rib support; In step S4, after Δx is calculated according to the above formula, the vertical plates (10) on both sides of the folding fan-shaped precision adjustment device (1) that need to be adjusted are respectively displaced by Δx through the power device (6), so that the elevation of the linear control point can match the requirements of the drawing.

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