High-speed railway contact net pillar foundation structure

Abstract

The invention relates to the technical field of railway engineering, in particular to a high-speed railway catenary pillar foundation structure which comprises a building body pre-buried underground, a lower mounting plate fixed to the top end of the building body extending to the ground, and an upper mounting plate arranged above the lower mounting plate. The positioning correction assembly is used for connecting the upper mounting plate and the lower mounting plate, an upper through hole is formed in the upper mounting plate, a lower through hole is formed in the lower mounting plate, an insertion hole is formed in the building body and right opposite to the lower through hole, the inner diameter of the upper through hole is sequentially reduced from top to bottom, and the inner diameter of the lower through hole is gradually reduced from top to bottom. The inner diameter of the lowest end of the upper through hole is equal to that of the lower through hole; when the steel column is slightly inclined during insertion, the steel column can be assisted to be smoothly inserted into the strut foundation, so that the mounting time consumption of the steel column of the overhead line system is shortened, and the overall construction period of a railway is also shortened.

Description

Technical Field

[0001] The invention relates to the technical field of railway engineering, and in particular to a high-speed railway contact network support pillar foundation structure. Background Art

[0002] In the prior art, the contact network support foundation set on the railway roadbed is usually excavated by using a rotary drilling rig or manual digging to dig a foundation pit for the contact network support foundation after the roadbed is filled. The support foundation is then pre-buried or cast in the foundation pit. After the support foundation is installed or formed, a crane is used to lift the steel column and the steel column is inserted into the support foundation for fixation. However, most of the existing support foundation structures adopt a fixed structure. When inserting the steel column, it is difficult for the crane to completely align the steel column with the insertion hole on the support foundation pit. The steel column is prone to a little skew, making it difficult to smoothly insert the steel column into the support foundation, resulting in a long installation process of the contact network steel column, which extends the overall construction period of the railway. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned deficiencies and provide a high-speed railway contact network pillar foundation structure, which can assist the steel column to be smoothly inserted into the pillar foundation when the steel column is inserted crookedly, thereby shortening the installation time of the contact network steel column and shortening the overall construction period of the railway.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-speed railway contact network pillar foundation structure includes a building body pre-buried in the ground, the top of the building body extends to the ground and is fixed with a lower mounting plate, an upper mounting plate arranged above the lower mounting plate, and is used to connect the upper mounting plate and the positioning correction component used by the lower mounting plate, the upper mounting plate is provided with an upper through hole, the lower mounting plate is provided with a lower through hole, and the building body is provided with a plug hole opposite to the lower through hole, the inner diameter of the upper through hole decreases from top to bottom, and the inner diameter of the lowest end of the upper through hole is equal to the inner diameter of the lower through hole.

[0006] Furthermore, the positioning correction component includes a positioning correction structure one and multiple groups of positioning correction structures two.

[0007] Furthermore, the positioning correction structure is a plurality of plug-in columns vertically fixed on the lower mounting plate, a positioning seat is provided on the upper mounting plate opposite to the plug-in columns, a circular arc-shaped recess is provided at the bottom of the positioning seat, and a round head is provided at the top of the plug-in column opposite to the circular arc-shaped recess.

[0008] Furthermore, any group of the positioning and correction structure 2 includes multiple fixed shafts vertically fixed on the lower mounting plate, fixed rings symmetrically fixed on the upper mounting plate, and a movable ring arranged opposite to the fixed ring. The fixed shaft movably passes through the fixed ring, and the movable ring is fixed on the fixed shaft. An annular groove is arranged on the fixed ring, and the annular groove and the movable ring are rollingly connected by multiple steel balls. A positioning through hole connecting the two fixed rings is arranged on the upper mounting plate, and the inner diameter of the positioning through hole and the inner diameter of the fixed ring are both larger than the outer diameter of the fixed shaft.

[0009] Furthermore, a sliding sleeve on the fixed shaft is provided with an abutment ring, a plug is fixed to the top end of the fixed shaft, the plug and the abutment ring are connected by a spring, and a limiting ring is provided on the fixed sleeve on the fixed shaft. When the spring is in a stretched state, the upper surface of the limiting ring abuts against the bottom surface of the lower movable ring.

[0010] Furthermore, the second positioning correction structure is provided with four groups.

[0011] Furthermore, it also includes a pillar foundation casting mold, and the pillar foundation casting mold can set the upper mounting plate cover on the lower mounting plate.

[0012] The beneficial effects of the present invention are:

[0013] In actual applications, when the crane lifts the steel column and inserts it downward, the steel column is first plugged into the upper through hole. In the process of passing through the upper through hole, the steel column is positioned and corrected by the positioning and correction component. When the steel column passes through the upper through hole, the bottom end of the steel column is directly opposite to and plugged into the lower through hole and the plug hole. The present invention can assist the steel column to be smoothly inserted into the pillar foundation when the steel column is slightly skewed during insertion, thereby shortening the installation time of the contact network steel column and shortening the overall construction period of the railway. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a front view of the present invention;

[0016] Figure 3 yes Figure 2 Sectional view at A in the middle;

[0017] Figure 4 yes Figure 2 Sectional view at B in the middle;

[0018] Figure 5 It is a structural schematic diagram of the pillar foundation casting mold, the lower mounting plate and the building body in the present invention;

[0019] Figure numerals: building body 1; lower mounting plate 2; lower through hole 21; upper mounting plate 3; upper through hole 31; positioning through hole 32; plug column 411; round head 4111; positioning seat 412; arc-shaped recess 4121; fixed shaft 421; fixed ring 422; annular groove 4221; movable ring 423; steel ball 424; abutment ring 425; plug 426; spring 427; limit ring 428; pillar foundation casting mold 5. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] like Figure 1-5 As shown, a high-speed railway contact network pillar foundation structure includes a building body 1 pre-buried in the ground, the top of the building body 1 extends to the ground and is fixed with a lower mounting plate 2, an upper mounting plate 3 arranged above the lower mounting plate 2, used to connect the upper mounting plate 3 and the positioning correction component used by the lower mounting plate 2, the upper mounting plate 3 is provided with an upper through hole 31, the lower mounting plate 2 is provided with a lower through hole 21, and the building body 1 is provided with a plug hole opposite to the lower through hole 21, the inner diameter of the upper through hole 31 decreases from top to bottom, and the inner diameter of the lowest end of the upper through hole 31 is equal to the inner diameter of the lower through hole 21.

[0022] When the crane lifts the steel column and inserts it downward, the steel column is first inserted into the upper through hole 31. In the process of passing through the upper through hole 31, the steel column is positioned and corrected by the positioning and correction component. When the steel column passes through the upper through hole 31, the bottom end of the steel column is directly opposite to and inserted into the lower through hole 21 and the insertion hole. The present invention can assist the steel column to be smoothly inserted into the pillar foundation when the steel column is slightly skewed during insertion, thereby shortening the installation time of the contact network steel column and shortening the overall construction period of the railway.

[0023] like Figure 1-5 As shown, the positioning correction assembly includes a positioning correction structure 1 and multiple groups of positioning correction structures 2; in this embodiment, when the steel column is lifted by the crane and inserted downward along the upper through hole 31, the position of the steel column is fine-tuned through the positioning correction structure 1 and multiple groups of positioning correction structures 2 so that the bottom end of the steel column is opposite to the lower through hole 21 and the insertion hole.

[0024] like Figure 1-5As shown, the positioning correction structure 1 is a plurality of plug-in columns 411 vertically fixed on the lower mounting plate 2, a positioning seat 412 is provided on the upper mounting plate 3 opposite to the plug-in columns 411, a circular arc-shaped recess 4121 is provided at the bottom of the positioning seat 412, and a round head 4111 is provided at the top of the plug-in column 411 opposite to the circular arc-shaped recess 4121; in this embodiment, when the crane lifts the steel column and inserts it downward along the upper through hole 31, the round head 4111 at the top of the plug-in column 411 gradually presses into the circular arc-shaped recess 4121 to fine-tune the position of the bottom end of the steel column.

[0025] like Figure 1-5 As shown, any group of the positioning correction structure 2 includes a plurality of fixed shafts 421 vertically fixed on the lower mounting plate 2, a fixed ring 422 symmetrically fixed on the upper mounting plate 3, and a movable ring 423 arranged opposite to the fixed ring 422. The fixed shaft 421 movably passes through the fixed ring 422, and the movable ring 423 is fixed on the fixed shaft 421. The fixed ring 422 is provided with an annular groove 4221, and the annular groove 4221 and the movable ring 423 are rollingly connected by a plurality of steel balls 424. The upper mounting plate 3 is provided with a plurality of fixed shafts 421, and the fixed shaft 421 is provided with a plurality of fixed shafts 421, and the movable ring 423 is rollingly connected by a plurality of steel balls 424. A positioning through hole 32 is provided to connect the two fixing rings 422, and the inner diameters of the positioning through hole 32 and the fixing ring 422 are both larger than the outer diameter of the fixing shaft 421. In this embodiment, when the crane lifts the steel column and inserts it downward along the upper through hole 31, a plurality of steel balls 424 are rolled and connected between the annular groove 4221 and the movable ring 423, so that the fixing shaft 421 can move forward and backward and left and right in the positioning through hole 32 to fine-tune the position of the upper mounting plate 3. At the same time, the round head 4111 at the top of the plug-in column 411 gradually presses into the arc-shaped recess 4121 to complete the positioning of the steel column.

[0026] like Figure 1-5 As shown, a sliding sleeve 425 is provided on the fixed shaft 421, and a plug 426 is fixed on the top of the fixed shaft 421. The plug 426 and the abutment ring 425 are connected by a spring 427. A limiting ring 428 is provided on the fixed sleeve of the fixed shaft 421. When the spring 427 is in a stretched state, the upper surface of the limiting ring 428 abuts against the bottom surface of the lower movable ring 423. In this embodiment, during the process of the steel column being inserted into the upper through hole 31, the plug 426 and the abutment ring 425 are connected by the spring 427, and the spring 427 is gradually stretched. At the same time, the upper mounting plate 3 can produce fine adjustments in the up and down directions, so that the round head 4111 at the top of the plug-in column 411 can gradually be inserted into the arc-shaped recess 4121, and the upper surface of the limiting ring 428 abuts against the bottom surface of the lower movable ring 423 to position the steel column.

[0027] like Figure 1-5 As shown, the positioning correction structure 2 is provided with four groups; in this embodiment, the steel column is positioned by four groups of correction structures 2, and the positioning is more accurate.

[0028] like Figure 1-5 As shown, it also includes a pillar foundation casting mold 5, and the pillar foundation casting mold 5 can cover the upper mounting plate 3 on the lower mounting plate 2; in this embodiment, after the steel column is inserted into the socket on the building body 1, the upper mounting plate 3, the lower mounting plate 2 and the steel column can also be cast and connected through the pillar foundation casting mold 5, thereby improving the connection strength of the steel column.

[0029] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the scope defined by the spirit of the present invention.

Claims

1. A high-speed railway contact network support infrastructure, characterized in that: The invention comprises a building (1) pre-buried in the ground, wherein the top of the building (1) extends to the ground and is fixed with a lower mounting plate (2), an upper mounting plate (3) arranged above the lower mounting plate (2) and used to connect the positioning correction components used by the upper mounting plate (3) and the lower mounting plate (2), the upper mounting plate (3) being provided with an upper through hole (31), the lower mounting plate (2) being provided with a lower through hole (21), and the building (1) being provided with an insertion hole facing the lower through hole (21), the inner diameter of the upper through hole (31) decreasing from top to bottom, and the inner diameter of the lowest end of the upper through hole (31) being equal to the inner diameter of the lower through hole (21).

2. A high-speed railway contact network support infrastructure according to claim 1, characterized in that: The positioning correction component includes a positioning correction structure one and a plurality of groups of positioning correction structures two.

3. A high-speed railway overhead contact network support infrastructure according to claim 2, characterized in that: The first positioning correction structure is a plurality of plug-in columns (411) vertically fixed on the lower mounting plate (2); a positioning seat (412) is provided on the upper mounting plate (3) opposite to the plug-in columns (411); a circular arc-shaped recess (4121) is provided at the bottom of the positioning seat (412); and a round head (4111) is provided at the top of the plug-in column (411) opposite to the circular arc-shaped recess (4121).

4. A high-speed railway overhead contact network support infrastructure according to claim 2, characterized in that: Any group of the second positioning correction structure comprises a plurality of fixed shafts (421) vertically fixed on the lower mounting plate (2), a fixed ring (422) symmetrically fixed on the upper mounting plate (3) in an upper and lower manner, and a movable ring (423) arranged opposite to the fixed ring (422); the fixed shaft (421) movably passes through the fixed ring (422); the movable ring (423) is fixed on the fixed shaft (421); an annular groove (4221) is arranged on the fixed ring (422); the annular groove (4221) and the movable ring (423) are rollingly connected via a plurality of steel balls (424); a positioning through hole (32) connecting the two fixed rings (422) is arranged on the upper mounting plate (3); the inner diameter of the positioning through hole (32) and the inner diameter of the fixed ring (422) are both larger than the outer diameter of the fixed shaft (421).

5. A high-speed railway overhead contact network support infrastructure according to claim 4, characterized in that: The fixed shaft (421) is provided with a sliding sleeve with an abutment ring (425), the top end of the fixed shaft (421) is fixed with a plug (426), the plug (426) and the abutment ring (425) are connected via a spring (427), the fixed sleeve on the fixed shaft (421) is provided with a limit ring (428), when the spring (427) is in a stretched state, the upper surface of the limit ring (428) abuts against the bottom surface of the lower movable ring (423).

6. A high-speed railway overhead contact network support infrastructure according to claim 2, characterized in that: The second positioning correction structure is provided with four groups.

7. A high-speed railway overhead contact network support infrastructure according to claim 2, characterized in that: It also comprises a pillar foundation casting mould (5), and the pillar foundation casting mould (5) can cover the upper mounting plate (3) on the lower mounting plate (2).

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