Adjustable Girder Erection Platform for Track Beams and Track Beam Erection Method

Abstract

The present invention provides an adjustable girder erection platform for track girders, which includes a base that can be installed on a pier and a positioning and storage device for placing track girders. It further includes at least two sets of adjusting mechanisms installed on the base. Each of the adjusting mechanisms supports and fixes the positioning and storage device and is spaced between the base and the positioning and storage device. Each adjusting mechanism includes a sliding component that can move along the longitudinal direction and transverse direction of the bridge, and the sliding component supports the positioning and storage device. The present invention also provides a method for erecting track girders, which uses the above-mentioned girder erection platform. The girder erection platform of the present invention can accurately control the attitude of the track girder on the pier. When hoisting and constructing the track girder, it is not necessary to accurately control the track girder, which can greatly reduce the difficulty of hoisting the track girder, and can meet the installation accuracy requirements of the track girder, is easy to control and convenient to adjust. In addition, the girder erection platform can be reused, and the economy is relatively good.

Description

Technical Field

[0001] The present invention relates to rail transit, and particularly to an adjustable girder erection platform for track girders and a method for erecting track girders. Background Art

[0002] Currently, for the erection of straddle monorail track girders, the method is to first lower the girder to the designated position and then adjust the lateral inclination angle of the track girder to achieve the bridge alignment. On the one hand, the prior art has very high requirements for the accuracy of lowering the track girder, and the construction difficulty is great; on the other hand, it is also relatively difficult to directly adjust the lateral inclination angle of the track girder using a jack. Summary of the Invention

[0003] The purpose of the present invention is to provide an adjustable girder erection platform for track girders, aiming to solve the problem that the existing track girders are troublesome to erect.

[0004] The present invention is implemented as follows:

[0005] The present invention provides an adjustable girder erection platform for track girders, which includes a base that can be installed on a pier and a positioning and storage device for placing the track girder, and further includes at least two sets of adjusting mechanisms installed on the base. Each of the adjusting mechanisms supports and fixes the positioning and storage device and is spaced apart between the base and the positioning and storage device. Each adjusting mechanism includes a sliding component that can move along the longitudinal direction and transverse direction of the bridge, and the sliding component supports the positioning and storage device.

[0006] Further, the adjusting mechanism further includes a vertically arranged telescopic rod, and the telescopic rod is installed on the sliding component and supports and fixes the positioning and storage device.

[0007] Further, there are two telescopic rods for each adjusting mechanism, and the two telescopic rods are arranged at intervals along the transverse direction of the bridge.

[0008] Further, there are two sets of adjusting mechanisms, and the two sets of adjusting mechanisms are arranged along the longitudinal direction of the bridge between the base and the positioning and storage device.

[0009] Further, the sliding component includes a first slideway arranged on the base, a first slider slidably arranged on the first slideway, a second slideway arranged on the first slider, and a second slider slidably arranged on the second slideway. The first slideway is perpendicular to the second slideway. The first slideway is in the longitudinal direction or transverse direction of the bridge, and the second slider supports the positioning and storage device.

[0010] Further, the sliding assembly further includes a first sliding strut disposed on the base and used to push the first slider to move along the first slideway, and a second sliding strut disposed on the first slider and used to push the second slider to move along the second slideway.

[0011] Specifically, along the direction of the first slideway, first sliding struts are disposed on both sides of the first slider, and the first sliding struts are detachably connected to the base. The first sliding struts are all screw struts.

[0012] Specifically, along the direction of the second slideway, second sliding struts are disposed on both sides of the second slider, and the second sliding struts are detachably connected to the first slider. The second sliding struts are all screw struts.

[0013] An embodiment of the present invention further provides a method for erecting a track beam, which uses the above adjustable track beam erection platform, and specifically includes the following steps:

[0014] Install and fix the base on the pier, and place the track beam on the positioning storage device;

[0015] According to the position requirement of the track beam on the pier, adjust the attitude of the positioning storage device through the adjusting mechanism, so as to drive the attitude adjustment of the track beam through the positioning storage device;

[0016] After the attitude of the track beam meets the design requirements, install a permanent bearing on the top of the pier to support and fix the track beam;

[0017] Dismantle the adjustable track beam erection platform.

[0018] Specifically, between two consecutive track beams, after adjusting the attitudes of the two track beams, formwork is erected to pour the post-cast strip between the two track beams. After the post-cast strip reaches the design strength, install the permanent bearing.

[0019] The present invention has the following beneficial effects:

[0020] In the present invention, when installing the track beam on the pier top of the bridge pier, first install the track beam on the beam erection platform. The beam erection platform is a separated structure as a whole, its base is installed on the bridge, and the positioning and storage device is used to install and position the track beam, and the relative movement between the positioning and storage device and the track beam with respect to the base and the bridge pier is controlled by the adjusting mechanism, so as to adjust the attitude of the track beam on the bridge pier. For example, the track beam can be controlled to move along the longitudinal direction or transverse direction of the bridge, so that the position of the track beam on the bridge pier can be accurately controlled. By setting the beam erection platform with such a structure, when hoisting and constructing the track beam, it is not necessary to accurately control the track beam, which can greatly reduce the hoisting difficulty of the track beam, and can meet the installation accuracy requirements of the track beam, is easy to control, convenient to adjust. In addition, the beam erection platform can be reused, and the economy is relatively good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the track beam provided by the embodiment of the present invention as a simply supported beam installed on the bridge pier through an adjustable track beam erection platform;

[0023] Figure 2 Structural schematic diagram of the track beam provided by the embodiment of the present invention as a continuous beam installed on the bridge pier through an adjustable track beam erection platform;

[0024] Figure 3 Structural schematic diagram of the adjustable track beam erection platform provided by the embodiment of the present invention;

[0025] Figure 4 Structural schematic diagram of the adjusting mechanism of the adjustable track beam erection platform provided by the embodiment of the present invention;

[0026] Figure 5 Top view of the adjusting mechanism of the adjustable track beam erection platform provided by the embodiment of the present invention;

[0027] Figure 6 Structural schematic diagram of the first sliding support and the second sliding support of the adjustable track beam erection platform provided by the embodiment of the present invention;

[0028] Figure 7 Structural schematic diagram of the positioning and storage device provided by the embodiment of the present invention;

[0029] Figure 8The top view of the positioning and storage device provided by the embodiment of the present invention;

[0030] Figure 9 The structural schematic diagram of the connection block and the horizontal support of the positioning and storage device provided by the embodiment of the present invention;

[0031] Figure 10 The structural schematic diagram of the connection block and the baffle slideway of the positioning and storage device provided by the embodiment of the present invention;

[0032] Figure 11 The structural schematic diagram of the positioning and storage device and the track beam provided by the embodiment of the present invention. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] See Figures 1 - 3, an embodiment of the present invention provides an adjustable girder erection platform 1 for track girders, which can be used to assist in installing track girders 2 onto bridge piers 3. Specifically, it includes a base 11 and a positioning and storage device. The base 11 is used to be installed on the top of the pier of the bridge pier 3, that is, the base 11 is fixedly installed with the bridge pier 3, and the positioning and storage device is used to install and fix the track girder 2. Generally speaking, when the size requirements in the longitudinal direction of the bridge are met at the top of the pier of the bridge pier 3, the base 11 can be directly fixed to the top of the pier of the bridge pier 3. Of course, the connection between the two should be detachable. When the size of the top of the bridge pier 3 does not meet the requirements, a bracket 31 is installed at the top of the bridge pier 3, and the base 11 is detachably installed on the bracket 31. In addition, when the bridge pier 3 is at the end of a simply supported beam or a continuous beam (formed by combining multiple track girders 2), a bracket 31 is provided on one side in the longitudinal direction of the bridge pier 3, otherwise brackets 31 are provided on both sides of the bridge pier 3. Of course, the connection between the positioning and storage device and the track girder 2 is also a detachable connection structure. When using the girder erection platform 1 to install the track girder 2, the positioning and storage device and the track girder 2 are an integral structure, and the base 11 and the positioning and storage device are connected by an adjustment mechanism 13. In use, the positioning and storage device is located directly above the base 11. At least two groups of adjustment mechanisms 13 are arranged on the base 11. The adjustment mechanism 13 supports and fixes the positioning and storage device, and the adjustment mechanisms 13 are spaced apart between the base 11 and the positioning and storage device. Specifically, each adjustment mechanism 13 includes a sliding component 14. The sliding component 14 supports the positioning and storage device and can move along the longitudinal direction and the transverse direction of the bridge. In the present invention, the positioning and storage device and the base 11 are separated by the adjustment mechanism 13. Part of the adjustment mechanism 13 is connected to the positioning and storage device, and part is connected to the base 11. And because the sliding component 14 can move along the longitudinal direction and the transverse direction of the bridge, the longitudinal and transverse positions of the corresponding positions of the positioning and storage device and the track girder 2 thereon can be adjusted, so as to achieve the purpose of precise adjustment of the attitude of the track girder 2. Here, not only can the linear movement of the track girder 2 in the horizontal direction be realized, but also because the same track girder 2 may be positioned by multiple positioning and storage devices, that is, installed and positioned on multiple bridge piers 3 by using multiple girder erection platforms 1, the torsion of the track girder 2 in the horizontal direction can be realized by adjusting the positions of the respective positioning and storage devices. Thus, by setting the girder erection platform 1 with this structure, the accuracy requirements during the hoisting of the track girder 2 can be weakened, the hoisting difficulty of the traditional track girder 2 is greatly reduced, and it is easy to adjust and convenient to control when adjusting the attitude of the track girder 2. In addition, the girder erection platform 1 can be reused, and the economy is relatively good.

[0035] See Figure 3 and Figure 4, Optimize the above embodiment. The adjusting mechanism 13 further includes a telescopic rod 131, and the telescopic rod 131 is vertically installed on the sliding assembly 14 and can support and fix the positioning and storage device. In this embodiment, the adjustment method of the adjusting mechanism 13 is increased. The telescopic rod 131 can adopt a jack, which is installed on the sliding assembly 14 and its top is fixedly connected to the positioning and storage device. Specifically, the sliding assembly 14 is located on the base 11, and the telescopic rod 131 is located on the sliding assembly 14 and supports the positioning and storage device. Thus, the sliding assembly 14 can drive the telescopic rod 131 to move along the longitudinal direction or transverse direction of the bridge, and then the telescopic rod 131 drives the positioning and storage device and the track beam 2 thereon to move synchronously. In addition, the telescopic rod 131 can also realize the vertical movement of the positioning and storage device through vertical telescoping to adjust the elevation of the track beam 2. Similarly, by adjusting the vertical direction of the positioning and storage device at different positions, the inclination angle of the track beam 2 can also be adjusted.

[0036] Continue to optimize the above embodiment. Each adjusting mechanism 13 has two telescopic rods 131, and the two telescopic rods 131 are arranged at intervals along the transverse direction of the bridge. In addition, there are two groups of adjusting mechanisms 13, and the two groups of adjusting mechanisms 13 are arranged along the longitudinal direction of the bridge between the base 11 and the positioning and storage device. The so-called two groups of adjusting mechanisms 13 means that each girder erection platform 1 has two groups of adjusting mechanisms 13, which indicates that each girder erection platform 1 has four telescopic rods 131 to support the positioning and storage device, and the telescopic rods 131 are spaced apart and the force is balanced to stably support the positioning and storage device.

[0037] Refer to again Figure 4 and Figure 5 , As an embodiment of the present invention, the sliding assembly 14 includes a first slideway 141, a first slider 142, a second slideway 143 and a second slider 144. Among them, the first slideway 141 is arranged on the base 11, and the first slider 142 is slidably arranged on the first slideway 141, that is, the first slider 142 can move along the first slideway 141. The second slideway 143 is arranged on the first slider 142, and the second slider 144 is slidably arranged on the second slideway 143, that is, the second slider 144 can move along the second slideway 143. The second slider 144 supports the positioning and storage device. Specifically, the above two telescopic rods 131 are installed on the second slider 144, and the second slider 144 supports the positioning and storage device through the telescopic rods 131. The first slideway 141 is perpendicular to the second slideway 143. If the first slideway 141 is along the longitudinal direction of the bridge, then the second slideway 143 is along the transverse direction of the bridge, or if the first slideway 141 is along the transverse direction of the bridge, then the second slideway 143 is along the longitudinal direction of the bridge. Generally, the first slider 142 is of an approximate square structure, and the second slider 144 is long and strip-shaped and is located in the middle of the first slider 142. Two first sliders 142 are arranged side by side on the upper surface of the base 11, and the two first sliders 142 are spaced apart, and the two second sliders 144 are parallel.

[0038] See Figure 5 and Figure 6, continue to refine the structure of the sliding component 14, which further includes a first sliding strut 145 and a second sliding strut 146. The first sliding strut 145 is disposed on the base 11 and can push the first slider 142 to move along the first slideway 141, while the second sliding strut 146 is disposed on the first slider 142 and can be used to push the second slider 144 to move along the second slideway 143. Both the first sliding strut 145 and the second sliding strut 146 can adopt the structure of a screw strut, including a sleeve 147 and a screw rod 148 that at least partially extends into the sleeve 147 and is threadedly connected to the sleeve 147. The sleeve 147 of the first sliding strut 145 is installed on the base 11, one end of the screw rod 148 extends into the sleeve 147, and the other end abuts against the first slider 142. By rotating the screw rod, the first slider 142 can be pushed to move along the first slideway 141. Thus, the first sliding strut 145 is arranged parallel to the first slideway 141. Similarly, the sleeve 147 of the second sliding strut 146 is installed on the first slider 142, one end of the screw rod 148 extends into the sleeve 147, and the other end abuts against the second slider 144. By rotating the screw rod 148, the second slider 144 can be pushed to move along the second slideway 143. For this structure, along the extending direction of the first slideway 141, the first sliding struts 145 are arranged on both sides of the first slider 142, and each first sliding strut 145 should be detachably installed on the base 11. Since it drives the first slider 142 to move by pushing, the first sliding strut 145 on the side of the moving direction of the first slider 142 should be removed, and the screw rod of the first sliding strut 145 on the other side is rotated so that the screw rod 148 extends out of the corresponding sleeve 147, thereby pushing the first slider 142 to move along the first slideway 141. When the first slider 142 moves in place, the first sliding strut 145 on the moving side of the first slider 142 is reinstalled to position the first slider 142. Generally, two first sliding struts 145 are arranged on the same side of the first slider 142, and the first slider 142 is pushed to move by the two first sliding struts 145 simultaneously. Similarly, along the extending direction of the second slideway 143, the second sliding struts 146 are also arranged on both sides of the second slider 144, and each second sliding strut 146 should also be detachably installed on the first slider 142. When it is necessary to push the second slider 144 to move, the second sliding strut 146 on the side of the moving direction of the second slider 144 can be removed, and the screw rod 148 of the second sliding strut 146 on the other side is rotated, thereby pushing the second slider 144 to move along the second slideway 143. When the second slider 144 moves in place, the second sliding strut 146 on the moving side of the second slider 144 is reinstalled to position the second slider 144. Generally, two second sliding struts 146 are arranged on the same side of the second slider 144, and the second slider 144 is pushed to move by the two second sliding struts 146 simultaneously.

[0039] SeeFigure 1 , Figure 2 and Figure 7 , embodiments of the present invention further provide a positioning storage device. Through this positioning storage device, the positioning and storage of the track beam 2 can be achieved. It can be used alone to store the track beam 2 on the positioning storage device, or it can be used in cooperation with the above-mentioned base 11 and the adjustment mechanism 13 to achieve the installation of the track beam 2 on the pier 3. In the present invention, when the track beam 2 is hoisted onto the pier 3, first, the track beam 2 is positioned and installed on the positioning storage device, and then the entire positioning storage device is hoisted onto the base 11. The base 11 is fixedly connected to the top of the adjustment mechanism 13. Specifically, the top of the telescopic rod 131 of the adjustment mechanism 13 is fixedly connected to the positioning storage device. The positioning storage device includes a mounting seat 12 and a clamping assembly 15 provided on the mounting seat. The clamping assembly 15 includes a first movable baffle 151 and a second movable baffle 152. The first movable baffle 151 and the second movable baffle 152 have similar structures. The first movable baffle 151 has a first rotating end 153 and a first movable end 154. The first rotating end 153 and the first movable end 154 are oppositely arranged. Among them, the first rotating end 153 is rotatably connected to the mounting seat 12. Similarly, the second movable baffle 152 also has a second rotating end 155 and a second movable end 156. The second rotating end 155 and the second movable end 156 are oppositely arranged. Among them, the second rotating end 155 is located on the mounting seat 12 and can rotate relative to the mounting seat 12. The first rotating end 153 and the second rotating end 155 are oppositely arranged and both extend along the bridge longitudinal direction. When the first movable baffle 151 is controlled to rotate around the first rotating end 153 and the second movable baffle 152 is controlled to rotate around the second rotating end 155, specifically, the first movable baffle 151 and the second movable baffle 152 rotate relative to each other, and a clamping groove for the track beam 2 to pass through is formed between the first movable baffle 151 and the second movable baffle 152. Thus, the installation and positioning of the track beam 2 are achieved through the first movable baffle 151 and the second movable baffle 152.

[0040] See Figure 7 and Figure 8, Further, the clamping assembly 15 further includes a first rotating strut 157 and a second rotating strut 158. One end of the first rotating strut 157 is hinged to the mounting seat 12, and the other end is hinged to the first movable baffle 151. One end of the second rotating strut 158 is hinged to the mounting seat 12, and the other end is hinged to the second movable baffle 152. Both the first rotating strut 157 and the second rotating strut 158 are located outside the clamping groove formed by the enclosure of the first movable baffle 151 and the second movable baffle 152, and can respectively support the first movable baffle 151 and the second movable baffle 152. Generally speaking, both the first rotating strut 157 and the second rotating strut 158 can adopt hydraulic struts, and their expansion and contraction can control the rotation of the first movable baffle 151 and the second movable baffle 152, and can generate sufficient clamping force on the track beam 2. In addition, the hinge point of the first rotating strut 157 and the first movable baffle 151 is close to the first movable end 154 and is located at the middle position of the first movable baffle 151 along the bridge direction. Of course, when there are two or more first rotating struts 157 corresponding to the first movable baffle 151, the first rotating struts 157 are evenly spaced along the bridge direction. Similarly, the hinge point of the second rotating strut 158 and the second movable baffle 152 is close to the second movable end 156 and is located at the middle position of the second movable baffle 152 along the bridge direction. Assuming that there are two or more second rotating struts 158 corresponding to the first movable baffle 151, the second rotating struts 158 are evenly arranged along the bridge direction.

[0041] See Figures 8 - 10, Optimize the above embodiment. A baffle slideway 121 is provided on the mounting base 12, and a connecting block 122 is arranged in the baffle slideway 121. The connecting block 122 can move along the baffle slideway 121, and the moving direction of the connecting block 122 is the transverse bridge direction. The second movable end 156 of the above-mentioned second movable baffle 152 is rotatably connected to the connecting block 122. In this embodiment, the second movable baffle 152 is installed on the mounting base 12 through the connecting block 122. When the connecting block 122 moves along the baffle slideway 121, it can drive the second movable end 156 of the second movable baffle 152 to move relative to the first movable end 154, so as to realize the adjustment of the distance between the first movable baffle 151 and the second movable baffle 152 to adapt to track beams 2 of different thicknesses. In fact, during operation, first control the connecting block 122 to move so that the second movable end 156 moves away from the first movable end 154. After placing the track beam 2 between the first movable end 154 and the second movable end 156, control the connecting block 122 to move to the side of the first movable end 154 until the second movable end 156 abuts against the bottom of the track beam 2. After controlling the rotation of the second movable baffle 152, the first movable baffle 151 and the second movable baffle 152 clamp the track beam 2. Usually, a horizontal strut 123 is also arranged in the baffle slideway 121. The horizontal strut 123 can be used to push the connecting block 122 to move along the baffle slideway 121. Therefore, the horizontal strut 123 is also arranged along the moving direction of the connecting block 122. Specifically, the horizontal strut 123 can be selected as a screw strut. One end of it is rotatably installed on the inner wall of the baffle slideway 121, and the other end is threadedly connected to the connecting block 122. Thus, by controlling the rotation of the horizontal strut 123, the connecting block 122 can be driven to move along the baffle slideway 121. In another embodiment, one end of the horizontal strut 123 is fixedly connected to the connecting block 122, and the other end is threadedly connected to one end of a sleeve 124. By rotating the sleeve 124, the horizontal strut 123 can be driven to move linearly relative to the sleeve 124, and then drive the connecting block 122 to move linearly. Of course, the other end of the sleeve 124 is installed and positioned in the baffle slideway 121 through a connecting rod 125, and the sleeve 124 and the connecting rod 125 are rotatably connected. The horizontal strut 123 can be one or more according to needs. When there are multiple horizontal struts 123, they are arranged at intervals in sequence along the longitudinal bridge direction. Correspondingly, the connecting block 122 and the baffle slideway 121 can also be one or more. When there are multiple connecting blocks 122, they are also arranged at intervals in sequence along the longitudinal bridge direction. Each connecting block 122 can correspond to one or more horizontal struts 123. In a preferred solution, the baffle slideway 121 is a groove opened on the upper surface of the mounting base 12, and it is a stepped groove structure, which can effectively prevent the connecting block 122 from falling off the baffle slideway 121. When the connecting block 122 is placed in the baffle slideway 121, the upper surface of the connecting block 122 is in the same plane as the upper surface of the mounting base 12, so that the first movable end 154 and the second movable end 156 are at the same height.

[0042] See Figure 7 , continue to optimize the above embodiment. A flexible material layer is laid on the inner sides of the first movable baffle 151 and the second movable baffle 152. Here, the inner sides of the first movable baffle 151 and the second movable baffle 152 are the sides opposite to each other after rotation, that is, the sides for clamping the track beam 2. Generally, both the first movable baffle 151 and the second movable baffle 152 are flat plate-like structures, and the inner surface for clamping the track beam 2 is a plane, while part of the track beam 2 is an arc structure with a certain curvature. Therefore, by setting the flexible material layer, it can be ensured that the first movable baffle 151 and the second movable baffle 152 can fit closely with the track beam 2. Rubber or the like can be selected for the flexible material layer.

[0043] See 7, Figure 8 and Figure 11 , further, a lifting ring 126 is provided on the mounting seat 12. Generally, there are multiple groups of lifting rings 126. When the track beam 2 is clamped and positioned on the mounting seat 12, the track beam 2 can be transferred by lifting each lifting ring 126 of the mounting seat 12. Specifically, the mounting seat 12 can be lifted and transported so that the mounting seat 12 is located on the adjusting mechanism 13 of the base 11. Each lifting ring 126 is arranged close to the edge of the mounting seat 12, and all structural components (such as the first movable baffle 151, the second movable baffle 152, the baffle slideway 121, and the connecting block 122, etc.) on the mounting seat 12 are located inside the lifting rings 126. In addition, there are certain requirements for the setting position of the lifting rings 126. When the track beam 2 mounted and positioned on the mounting seat 12 is an arc structure, the distance between the lifting ring 126 on the outer side of the curve and the first movable baffle 151 or the second movable baffle 152 should be greater than the distance between the center of gravity line of the track beam 2 and the movable baffle, and a certain margin should be left. When lifting, the lifting should start from the lifting ring 126 on the outer side of the curve first. When the outer lifting point reaches the designed lifting force, then lift the inner lifting point of the curve. The lifting process should be stable to avoid the track beam 2 from tipping over during lifting.

[0044] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 , the embodiment of the present invention also provides a method for erecting a track beam, which adopts the above-mentioned beam erection platform 1, and specifically includes the following steps:

[0045] First, install and fix the base 11 on the bridge pier 3, and place the track beam 2 on the mounting seat 12. Specifically, fix the beam erection platform 1 on the pier top or the pier top bracket 31 through the bolt holes on the base 11. Of course, the beam erection platform 1 is horizontal as a whole. When placing the track beam 2 on the mounting seat 12, the first movable baffle 151 and the second movable baffle 152 are in an open state in advance, and the second movable end 156 is relatively far from the first movable end 154. Place the track beam 2 between the first movable end 154 and the second movable end 156. Generally, one side of the track beam 2 abuts against the first movable end 154, and then control the second movable end 156 to abut against the other side of the track beam 2 through the horizontal strut 123. Then, the first rotating strut 157 and the second rotating strut 158 work to drive the first movable baffle 151 and the second movable baffle 156 to rotate relative to each other, thereby realizing the clamping and positioning of the track beam 2.

[0046] Lift and install the mounting seat 12 and the track beam 2 as a whole onto the adjusting mechanism 13 of the mounting seat 12 by hoisting the mounting seat 12. The mounting seat 12 is fixedly connected to the top of the telescopic rod 131 of the adjusting mechanism 13. Then, adjust the attitude of the mounting seat 12 through the adjusting mechanism 13 according to the position requirements of the track beam 2 on the bridge pier 3, so as to drive the attitude adjustment of the track beam 2 through the mounting seat 12. Specifically, adjust the first slider 142 and the second slider 144 to move along the corresponding sliding tracks to realize the adjustment of the longitudinal and transverse positions of the track beam 2. And adjust the vertical telescoping of the telescopic rod 131 to realize the adjustment of the elevation of the track beam 2. By adjusting the vertical directions of the mounting seats 12 at different positions, the inclination angle of the track beam 2 can be adjusted.

[0047] After the attitude of the track beam 2 meets the design requirements, install permanent bearings on the top of the bridge pier 3 to support and fix the track beam 2. Of course, between two consecutive track beams 2, after adjusting the attitudes of the two track beams 2, formwork is erected to pour the post-cast strip 21 between the two track beams 2. Then, after the post-cast strip 21 reaches the design strength, install the permanent bearings.

[0048] After the permanent bearings support and fix the track beam 2, disassemble the above-mentioned beam erection platform 1. Specifically, first release the clamping of the track beam 2 by the first movable baffle 151 and the second movable baffle 152, and then release the connection between the base 11 and the top of the bridge pier 3 or the bracket 31. The disassembled beam erection platform 1 can be reused.

[0049] 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 principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable girder erection platform for track girders, comprising a base that can be installed on a pier and a positioning and storage device for placing track girders. It is characterized in that: It further includes at least two sets of adjusting mechanisms installed on the base. Each adjusting mechanism supports and fixes the positioning and storage device and is spaced between the base and the positioning and storage device. Each adjusting mechanism includes a sliding component that can move along the longitudinal direction and transverse direction of the bridge. The sliding component supports the positioning and storage device; The positioning and storage device includes a mounting seat and a clamping component arranged on the mounting seat. The adjusting mechanism supports and fixes the mounting seat. The clamping component includes a first movable baffle and a second movable baffle. The first movable baffle has a first rotating end and a first movable end opposite to the first rotating end. The second movable baffle has a second rotating end and a second movable end opposite to the second rotating end. The first rotating end and the second rotating end are both rotatably installed on the mounting seat. The rotation axes of the first rotating end and the second rotating end are both along the longitudinal direction of the bridge and are spaced relatively; A baffle slideway is arranged on the mounting seat. A connecting block is slidably arranged in the baffle slideway. The second rotating end is rotatably connected to the connecting block, and the sliding direction of the connecting block is perpendicular to the rotation axis of the second rotating end.

2. The adjustable girder erection platform for track girders according to claim 1, It is characterized in that: The adjusting mechanism further includes a vertically arranged telescopic rod. The telescopic rod is installed on the sliding component and supports and fixes the positioning and storage device.

3. The adjustable girder erection platform for track girders according to claim 2, It is characterized in that: There are two telescopic rods for each adjusting mechanism, and the two telescopic rods are arranged at intervals along the transverse direction of the bridge.

4. The adjustable girder erection platform for track girders according to claim 1, It is characterized in that: There are two sets of adjusting mechanisms, and the two sets of adjusting mechanisms are arranged along the longitudinal direction of the bridge between the base and the positioning and storage device.

5. The adjustable girder erection platform for track girders according to claim 1, It is characterized in that: The sliding component includes a first slideway arranged on the base, a first slider slidably arranged on the first slideway, a second slideway arranged on the first slider, and a second slider slidably arranged on the second slideway. The first slideway is perpendicular to the second slideway. The first slideway is along the longitudinal direction or transverse direction of the bridge, and the second slider supports the positioning and storage device.

6. The adjustable girder erection platform for track girders according to claim 5, It is characterized in that: The sliding component further includes a first sliding support rod arranged on the base and used to push the first slider to move along the first slideway and a second sliding support rod arranged on the first slider and used to push the second slider to move along the second slideway.

7. The adjustable girder erection platform for track girders according to claim 6, It is characterized in that: Along the direction of the first slideway, first sliding support rods are arranged on both sides of the first slider, and the first sliding support rods are detachably connected to the base. The first sliding support rods are all screw support rods.

8. The adjustable girder erection platform for track girders as claimed in claim 6, characterized in that: Along the direction of the second slideway, second sliding struts are arranged on both sides of the second slider, and the second sliding struts are detachably connected to the first slider, and the second sliding struts are all screw struts.

9. A method for erecting track girders, characterized in that, using the adjustable girder erection platform for track girders as claimed in claim 1, specifically including the following steps: Install and fix the base on the pier, and place the track girder on the positioning storage device; Adjust the attitude of the positioning storage device through the adjusting mechanism according to the position requirement of the track girder on the pier, so as to drive the attitude adjustment of the track girder through the positioning storage device; After the attitude of the track girder meets the design requirements, install a permanent bearing on the top of the pier to support and fix the track girder; Dismantle the adjustable girder erection platform for track girders.

10. The method for erecting track girders as claimed in claim 9, characterized in that: For two consecutive track girders, after adjusting the attitudes of the two track girders, formwork is erected to pour the post-cast strip between the two track girders. After the post-cast strip reaches the design strength, install the permanent bearing.

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