Adjustable temporary support on pier top for railway box girder erection

Abstract

The utility model discloses a pier top adjustable temporary support for railway box girder erection, including left side support and right side support, left side support with right side support structure is same and mutually symmetrical place in railway box girder bottom end both sides, and left side support includes sand cylinder, and the sand cylinder top end inside inserts the contact board, and the sand cylinder bottom end integrative fixed has the adjusting plate, and the adjusting plate includes single -layer fixed plate, and the single -layer fixed plate is equipped with several groups, and every group single -layer fixed plate surface four corners symmetry has opened four groups of positioning hole, and the eight groups positioning hole of two groups single -layer fixed plate of upper and lower adjacent inserts four groups of connecting pieces, and through connecting piece realizes the combination installation of two groups single -layer fixed plate of upper and lower adjacent, and the support height is adjustable, and through increasing or reducing the quantity of single -layer fixed plate, can flexible adjustment temporary support's support height, adapts to the pier of different height and complex construction topography, improves the adaptability and flexibility of construction.

Description

Technical Field

[0001] This utility model relates to the field of railway bridge construction, specifically an adjustable temporary support for the top of railway box girders. Background Technology

[0002] In railway bridge construction, the erection of railway box girders is a crucial step. During the erection process, temporary supports are needed to support the box girders until they are stably installed onto permanent supports.

[0003] Traditional temporary supports have some problems. The support height of temporary supports is often fixed, making it difficult to adjust flexibly according to actual construction needs. When facing piers of different heights or complex construction terrain, traditional temporary supports cannot adapt well, which may lead to tilting, instability and other problems during the erection of box girders, seriously affecting construction quality and safety.

[0004] Therefore, an adjustable temporary support for the top of a pier is provided for the erection of railway box girders. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an adjustable temporary support for pier tops used in railway box girder erection, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable temporary support for the top of a pier for railway box girder erection, comprising a left support and a right support, wherein the left support and the right support have identical structures and are symmetrically placed on both sides of the bottom end of the railway box girder, wherein: The left support includes a sand cylinder, with a contact plate inserted inside the top of the sand cylinder. An adjustment plate is integrally formed and fixed at the bottom of the sand cylinder. The adjustment plate includes a single-layer fixing plate, which is provided in several groups. Each group of single-layer fixing plates has four sets of positioning holes symmetrically opened at the four corners of its surface. Four sets of connectors are inserted into the eight sets of positioning holes of two adjacent groups of single-layer fixing plates. The combination and installation of two adjacent groups of single-layer fixing plates are realized through the connectors.

[0007] Preferably, the connector is composed of a set of square plates and two sets of cylinders installed at the top and bottom. The cylinders correspond to the positioning holes, and the connector is combined with the single-layer fixing plate by inserting the cylinders into the positioning holes.

[0008] Preferably, the contact plate includes an inclined support plate, an extension plate is fixedly connected to one side of the inclined support plate, a transverse support plate is slidably sleeved on the outside of the extension plate, a number of anti-slip protrusions are evenly arranged at the top of the transverse support plate, and a tapered steel pipe is fixed in the center of the bottom of the transverse support plate, the inside of the tapered steel pipe is filled with concrete.

[0009] Preferably, the sand cylinder includes a barrel-shaped steel pipe, with a sand discharge port at the bottom of the front end of the barrel-shaped steel pipe. A sand discharge pipe is integrally formed and fixed inside the sand discharge port. The sand discharge pipe has an internal thread design, and a threaded joint is connected to the internal thread of the sand discharge pipe. A nut is welded and fixed to the front end of the threaded joint.

[0010] Preferably, the tapered steel pipe is inserted inside the barrel-shaped steel pipe to achieve the combined installation of the contact plate and the sand cylinder, and sand is filled between the tapered steel pipe and the barrel-shaped steel pipe.

[0011] Beneficial effects Compared with the prior art, the present invention has the following advantages: 1. The support height of this utility model is adjustable. By increasing or decreasing the number of single-layer fixing plates, the support height of the temporary support can be flexibly adjusted to adapt to bridge piers of different heights and complex construction terrain, thereby improving the adaptability and flexibility of construction.

[0012] 2. This utility model adopts a method of connecting parts combined with single-layer fixing plates, which avoids pressure damage caused by direct contact of multiple sets of single-layer fixing plates, extends the service life of temporary supports, and reduces construction costs. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the disassembled left support of this utility model; Figure 3 This is a three-dimensional structural diagram of the contact plate of this utility model; Figure 4 This is a three-dimensional structural diagram of the sand cylinder and adjusting plate of this utility model.

[0014] In the diagram: 1. Left support; 11. Contact plate; 111. Inclined support plate; 112. Extension plate; 113. Transverse support plate; 114. Anti-slip protrusion; 115. Conical steel pipe; 12. Sand cylinder; 121. Barrel-shaped steel pipe; 122. Sand drain port; 123. Sand drain pipe; 124. Threaded joint; 125. Nut; 13. Adjusting plate; 131. Single-layer fixing plate; 132. Positioning hole; 133. Connector; 2. Right support. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 As shown, an adjustable temporary support for the top of a pier for the erection of railway box girders includes a left support 1 and a right support 2. The left support 1 and the right support 2 have the same structure and are placed symmetrically on both sides of the bottom end of the railway box girder.

[0017] The left support 1 includes a sand cylinder 12, with a contact plate 11 inserted inside the top of the sand cylinder 12. An adjusting plate 13 is integrally formed and fixed at the bottom of the sand cylinder 12. The adjusting plate 13 includes a single-layer fixing plate 131. The single-layer fixing plate 131 is provided in several groups. Each group of single-layer fixing plates 131 has four sets of positioning holes 132 symmetrically opened at the four corners of its surface. Four sets of connectors 133 are inserted into the eight sets of positioning holes 132 of two adjacent groups of single-layer fixing plates 131. The combination and installation of the two adjacent groups of single-layer fixing plates 131 are realized through the connectors 133.

[0018] It should be noted that the number of single-layer fixing plates 131 can be increased or decreased according to the actual construction requirements. By combining multiple sets of single-layer fixing plates 131, the support height of the railway box girder can be increased, and the combination method using connectors 133 reduces the occurrence of pressure damage caused by direct contact between multiple sets of single-layer fixing plates 131.

[0019] In one embodiment of this utility model, such as Figures 1-4 As shown, the connector 133 is composed of a set of square plates and two sets of cylinders installed at the top and bottom. The cylinders correspond to the positioning holes 132. The connector 133 is combined with the single-layer fixing plate 131 by inserting the cylinders into the positioning holes 132.

[0020] Specifically, the square plate serves to separate two adjacent sets of single-layer fixing plates 131, preventing them from directly contacting each other and causing crushing. The cylinder is inserted into the positioning hole 132, which can play a positioning role and prevent shaking during assembly.

[0021] In one embodiment of this utility model, such as Figures 1-4As shown, the contact plate 11 includes an inclined support plate 111. An extension plate 112 is fixedly connected to one side of the inclined support plate 111. A transverse support plate 113 is slidably sleeved on the outside of the extension plate 112. Several sets of anti-slip protrusions 114 are evenly arranged at the top of the transverse support plate 113. A tapered steel pipe 115 is fixed in the center at the bottom of the transverse support plate 113. The tapered steel pipe 115 is filled with concrete.

[0022] Specifically, during use, the position of the extension plate 112 within the transverse support plate 113 can be adjusted according to the bottom shape of the railway box girder, thereby adjusting the contact surface between the inclined support plate 111 and the bottom of the railway box girder, ensuring that the transverse support plate 113 and the inclined support plate 111 can support and fit the bottom and sides of the railway box girder.

[0023] In one embodiment of this utility model, such as Figures 1-4 As shown, the sand cylinder 12 includes a barrel-shaped steel pipe 121. A sand discharge port 122 is provided at the bottom of the front end of the barrel-shaped steel pipe 121. A sand discharge pipe 123 is integrally formed and fixed inside the sand discharge port 122. The sand discharge pipe 123 is designed with internal threads. A threaded joint 124 is connected to the internal threads of the sand discharge pipe 123. A nut 125 is welded and fixed to the front end of the threaded joint 124.

[0024] Specifically, during use, the inside of the barrel-shaped steel pipe 121 is filled with sand. After the entire support is installed, the nut 125 can be unscrewed with the help of a tool. The nut 125 drives the threaded joint 124 to unscrew out of the sand discharge pipe 123. Excess sand can be discharged through the sand discharge pipe 123, thereby reducing the height of the sand in the sand box and allowing the beam to fall smoothly onto the permanent support. This process avoids the impact damage to the beam and pier that may be caused by directly removing the support.

[0025] In one embodiment of this utility model, such as Figures 1-4 As shown, the tapered steel pipe 115 is inserted inside the barrel-shaped steel pipe 121 to achieve the combined installation of the contact plate 11 and the sand cylinder 12, and sand is filled between the tapered steel pipe 115 and the barrel-shaped steel pipe 121.

[0026] Specifically, the concrete inside the tapered steel pipe 115 serves to counterweight and lower the center of gravity, preventing the tapered steel pipe 115 from swaying inside the barrel-shaped steel pipe 121 during assembly.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] Working principle: In actual construction, the support height of the temporary support can be adjusted by increasing or decreasing the number of single-layer fixing plates 131 according to the pier height and construction requirements. The upper and lower sets of cylinders of the connector 133 are inserted into the positioning holes 132 of adjacent single-layer fixing plates 131 to achieve the combined installation of the single-layer fixing plates 131. The square plate serves to separate adjacent sets of single-layer fixing plates 131, preventing direct contact and crushing. Simultaneously, the cylinders inserted into the positioning holes 132 provide positioning, preventing wobbling during assembly, thus stably increasing the support height to meet the needs of different construction scenarios. The top of the transverse support plate 113 of the contact plate 11 is provided with an anti-slip protrusion 114, which can increase the friction with the bottom of the box girder. In use, according to the bottom shape of the railway box girder, the position of the sliding extension plate 112 within the transverse support plate 113 is adjusted, and the contact surface between the inclined support plate 111 and the bottom of the railway box girder is adjusted to ensure that the transverse support plate 113 and the inclined support plate 111 can provide good support and fit against the bottom and sides of the railway box girder, so that the box girder is subjected to uniform force and the support stability is improved. After the entire support is installed, the inside of the barrel-shaped steel pipe 121 is filled with sand. This sand fills the space between the tapered steel pipe 115 and the barrel-shaped steel pipe 121, providing stable support. The concrete inside the tapered steel pipe 115 acts as a counterweight and lowers the center of gravity, preventing the tapered steel pipe 115 from swaying inside the barrel-shaped steel pipe 121. When it is necessary to smoothly lower the box girder onto the permanent support, the nut 125 is loosened with a tool. The nut 125 causes the threaded connector 124 to unscrew from the sand drain pipe 123, allowing excess sand to be discharged through the sand drain pipe 123, reducing the sand height in the sand box. This allows the girder to fall smoothly, avoiding potential impact damage to the girder and piers that might occur if the support were directly removed.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable temporary support for pier tops used in railway box girder erection, comprising a left support (1) and a right support (2), characterized in that: The left support (1) and the right support (2) have the same structure and are placed symmetrically on both sides of the bottom end of the railway box girder, wherein: The left support (1) includes a sand cylinder (12), a contact plate (11) is inserted inside the top of the sand cylinder (12), and an adjustment plate (13) is integrally formed and fixed at the bottom of the sand cylinder (12). The adjustment plate (13) includes a single-layer fixing plate (131). The single-layer fixing plate (131) is provided with several groups. Each group of the single-layer fixing plate (131) has four sets of positioning holes (132) symmetrically opened at the four corners of the surface. Four sets of connectors (133) are inserted in the eight sets of positioning holes (132) of the two adjacent groups of single-layer fixing plates (131) to achieve the combined installation of the two adjacent groups of single-layer fixing plates (131) through the connectors (133).

2. The adjustable temporary support for pier top used in railway box girder erection according to claim 1, characterized in that, The connector (133) is composed of a set of square plates and two sets of cylinders installed at the top and bottom. The cylinders correspond to the positioning holes (132). The connector (133) and the single-layer fixing plate (131) are combined by inserting the cylinders into the positioning holes (132).

3. The adjustable temporary support for pier top used in railway box girder erection according to claim 2, characterized in that, The contact plate (11) includes an inclined support plate (111), an extension plate (112) is fixedly connected to one side of the inclined support plate (111), a transverse support plate (113) is slidably sleeved on the outside of the extension plate (112), a number of anti-slip protrusions (114) are evenly arranged at the top of the transverse support plate (113), and a tapered steel pipe (115) is fixed at the center of the bottom end of the transverse support plate (113), and the tapered steel pipe (115) is filled with concrete.

4. The adjustable temporary support for pier top used in railway box girder erection according to claim 3, characterized in that, The sand cylinder (12) includes a barrel-shaped steel pipe (121). A sand discharge port (122) is provided at the bottom of the front end of the barrel-shaped steel pipe (121). A sand discharge pipe (123) is integrally formed and fixed inside the sand discharge port (122). The sand discharge pipe (123) is designed with internal threads. A threaded joint (124) is connected to the inside of the sand discharge pipe (123). A nut (125) is welded and fixed to the front end of the threaded joint (124).

5. The adjustable temporary support for pier top used in railway box girder erection according to claim 4, characterized in that, The tapered steel pipe (115) is inserted inside the barrel-shaped steel pipe (121) to realize the combined installation of the contact plate (11) and the sand cylinder (12), and sand is filled between the tapered steel pipe (115) and the barrel-shaped steel pipe (121).

Images