A replaceable concrete rail bridge support structure

Abstract

The present invention discloses a replaceable concrete rail bridge pillar structure, including a concrete rail bridge pillar installed by embedded parts, and a steel plate, a pad, a threaded pipe and a sleeve. The pad is provided with a square hole corresponding to the position of the embedded part and is laid on the steel plate; the threaded pipe has a threaded section and an embedded section, a flange is provided on the outer wall of the lower end of the threaded section, which is adapted to the square hole, and an adjustment bolt is provided on the threaded section; the lower end of the sleeve has an accommodating section, the sleeve is sleeved on the threaded column, and the embedded section is inserted into the accommodating section; the threaded section is fixed by fixing bolts after passing through the base, and rail glue is poured between the base and the pad, and between the fixing hole and the sleeve and the threaded pipe. The present invention adopts the method of combining the threaded pipe and the sleeve to achieve complete isolation from the embedded threaded column, so that the concrete rail bridge pillar can be easily disassembled and replaced, thereby improving efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit infrastructure, and in particular to a replaceable concrete rail bridge pillar structure. Background Art

[0002] In order to ensure the safe operation of rail transit vehicles, the inspection, maintenance and daily care of subways, urban railways and other trains are becoming increasingly important. In order to facilitate the inspection work, rail bridges have increasingly replaced traditional wall inspection pits and become the mainstream of train inspection infrastructure.

[0003] The rail bridge is composed of rail bridge pillars, rails, spring clip fasteners, etc. Most of the early rail bridge pillars were made of steel structures, which were expensive. For this reason, the use of lower-cost concrete rail bridge pillars has become a development trend. The concrete rail bridge pillars are fixed to the foundation through embedded parts. In order to cope with the impact of ground subsidence, Chinese invention patent CN113882244A discloses a concrete rail bridge pillar system and its adjustment method for coping with ground subsidence. The concrete pillars are installed on the embedded parts through a tray device. The tray device includes a tray, which is provided with an external threaded sleeve corresponding to the studs on the embedded parts. When the ground subsidence is too large, the concrete pillars can be removed from the studs together with the tray device, and after placing adjustment pads on the bottom plate of the embedded parts, the concrete pillars can be installed on the studs together with the tray device. In this way, the concrete pillars can be adjusted in height and replaced, which solves the problem that the current concrete rail bridge pillars cannot be adjusted in height and replaced. However, this solution has the following defects:

[0004] First, the external thread sleeve is relatively long. Since the adjusting nut needs to be installed from the upper end and rotated downward to the designed position, it takes a long time to rotate the adjusting nut, and the installation efficiency is low.

[0005] Second, since it is difficult to ensure the accuracy of on-site welding of the external threaded sleeve, the external threaded sleeve and the support plate are usually welded in the factory, which results in a large transportation volume and inconvenience in transportation.

[0006] Third, due to the inevitable construction errors of the on-site foundation and embedded parts, the upper end of the external threaded sleeve will be lower than the top surface of the concrete pillar installation hole, and there will be a gap between the upper end of the external threaded sleeve and the fixing nut. The external threaded sleeve and the embedded parts cannot be completely isolated. When pouring track glue, it is easy for the gap between the external threaded sleeve and the fixing nut to enter the interior of the external threaded sleeve and adhere to the embedded parts, making it difficult to adjust the height and replace the track bridge pillars.

[0007] In view of this, there is an urgent need to improve the existing concrete rail bridge support system to improve installation efficiency and facilitate replacement. Summary of the invention

[0008] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a replaceable concrete rail bridge support structure to solve the problems of low installation efficiency and difficult replacement in the prior art.

[0009] To this end, the present invention provides a replaceable concrete rail bridge pillar structure, comprising a concrete rail bridge pillar installed by embedded parts, wherein the embedded parts are embedded and fixed in a foundation, and further comprising:

[0010] A steel plate, on which a through hole is provided that matches the threaded column of the embedded part, and the steel plate is laid in the embedded pit on the foundation;

[0011] A backing plate, having a square hole corresponding to the position of the embedded part, the backing plate is laid on the steel plate, and the threaded column of the embedded part is located at the center of the square hole;

[0012] A threaded pipe, comprising a threaded section and an embedded section arranged at the upper end of the threaded section, a flange is arranged on the outer wall of the lower end of the threaded section, and the flange is adapted to the square hole; the threaded pipe is sleeved on the threaded column, and the flange is located in the square hole, the bottom surface of the flange is in contact with the steel plate, and an adjusting bolt is arranged on the threaded section;

[0013] A sleeve, the lower end of which has a receiving section, the inner diameter of which matches the outer diameter of the embedding section, the sleeve is sleeved on the threaded column, and the embedding section is inserted into the receiving section;

[0014] The threaded section passes through the base upwards and is fixed by fixing bolts, and track glue is poured between the base and the backing plate, and between the inner wall of the fixing hole, the sleeve and the threaded tube.

[0015] In the above technical solution, preferably, an annular flange is provided at the upper end of the sleeve.

[0016] In the above technical solution, preferably, the upper end of the embedding section is provided with an outer chamfer, and the lower end of the receiving section is provided with an inner chamfer.

[0017] In the above technical solution, preferably, the diameter of the annular flange is smaller than the diameter of the fixing hole.

[0018] In the above technical solution, preferably, the material of the sleeve is nylon.

[0019] In the above technical solution, preferably, the material of the pad is nylon.

[0020] In the above technical solution, preferably, an annular groove is provided on the bottom surface of the flange of the threaded section.

[0021] In the above technical solution, preferably, the annular groove is arranged as two concentrically spaced grooves.

[0022] It can be seen from the above technical solutions that the replaceable concrete rail bridge support structure provided by the present invention solves the problems of low installation efficiency and difficult replacement in the prior art. Compared with the prior art, the present invention has the following beneficial effects:

[0023] By adopting the method of inserting and combining threaded pipes and sleeves, complete isolation from the embedded threaded columns is achieved, so that the concrete rail bridge pillars can be easily disassembled and replaced, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A side view of a replaceable concrete rail bridge support structure provided by the present invention;

[0026] Figure 2 for Figure 1 A top view of a replaceable concrete rail bridge support structure is shown;

[0027] Figure 3 for Figure 2 AA section view in;

[0028] Figure 4 for Figure 3 A magnified view of part B in FIG.

[0029] Figure 5 for Figure 3 CC profile in ;

[0030] Figure 6 is a cross-sectional view of the threaded pipe in the present invention;

[0031] Figure 7 A top view of the threaded pipe of the present invention;

[0032] Figure 8 is a cross-sectional view of the sleeve in the present invention;

[0033] Fig. 9 It is a schematic diagram of inserting the threaded pipe into the sleeve in the present invention.

[0034] Figure 1-Figure 8 In the figure, the corresponding relationship of the parts is as follows:

[0035] Embedded parts 10, concrete rail bridge pillars 20, foundation 30, steel plate 40, pad 50, threaded pipe 60, sleeve 70, rail cement 90;

[0036] Base 21;

[0037] Pre-buried pit 31;

[0038] Threaded section 61, embedded section 62, flange 63, annular groove 64;

[0039] An accommodating section 71 and an annular flange 72;

[0040] Adjust bolt 81 and fix bolt 82. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0043] It should be noted that the directional words such as "inside, outside", "front, back" and "left, right" in this article are expressed based on the product usage status. Obviously, the use of the corresponding directional words does not constitute a limitation on the protection scope of this scheme.

[0044] See also Figure 1 and Figure 2 , Figure 1 A side view of a replaceable concrete rail bridge support structure provided by the present invention, Figure 2 for Figure 1 A top view of a replaceable concrete rail bridge support structure is shown.

[0045] like Figure 1 , Figure 2 As shown, a replaceable concrete rail bridge support structure provided by the present invention includes an embedded part 10 and a concrete rail bridge support 20. The embedded part 10 is embedded and fixed in a foundation 30, and the concrete rail bridge support 20 is detachably fixed on the embedded part 10. The concrete rail bridge support 20 is arranged in two rows, and the top of the concrete rail bridge support 20 can be fixed with rails for parking and maintenance trains. Each concrete rail bridge support 20 corresponds to four embedded parts 10.

[0046] like Figure 3 , Figure 4 , Figure 5 As shown, the replaceable concrete rail bridge support structure also includes a steel plate 40 , a pad 50 , a threaded pipe 60 and a sleeve 70 .

[0047] The outer dimensions of the steel plate 40 are larger than the outer dimensions of the base 21 of the concrete rail bridge pillar 20. Four through holes are provided on the steel plate 40 at positions corresponding to the embedded parts 10, and the four through holes correspond to the fixing holes of the base 21. The foundation 30 is provided with an embedded pit 31 at the installation position corresponding to the concrete rail bridge pillar 20. Four embedded parts 10 are embedded and fixed in the embedded pit 31. The steel plate 40 is placed in the embedded pit 31, and the threaded columns of the four embedded parts 10 respectively pass through the steel plate 40 upwards. The threaded columns are provided with external threads at their upper parts for installing fixing bolts.

[0048] A square hole is provided on the backing plate 50 corresponding to the position of the threaded column of each embedded part 10 . The backing plate 50 is placed on the steel plate 40 , and the threaded column is located at the center of the square hole.

[0049] like Figure 6 , Figure 7 As shown, the threaded tube 60 has a threaded section 61 and an embedded section 62 located at the upper end of the threaded section 61, and the outer diameter of the embedded section 62 is smaller than the outer diameter of the threaded section 61. The upper end of the embedded section 62 is provided with an outer chamfer. A flange 63 is provided on the outer wall of the lower end of the threaded section 61, and the shape of the flange 63 is square, which is adapted to the square hole on the backing plate 50. The inner diameter of the threaded tube 60 is larger than the outer diameter of the threaded column of the embedded part 10. The threaded tube 60 is sleeved on the threaded column of the embedded part 10 from top to bottom, and the flange 63 is arranged in the square hole on the backing plate 50, and the bottom surface of the flange 63 is in contact with the steel plate 40.

[0050] An annular groove 64 is provided on the bottom surface of the flange 63. In this embodiment, the annular groove 64 is arranged as two concentrically spaced grooves. When pouring track cement, once track cement enters the bottom surface of the flange 63, it will be deposited in the annular groove 64. Therefore, it can be prevented that the track cement enters the threaded tube through the bottom surface of the flange 63 during pouring and adheres to the embedded part, making it easier to pull out the threaded tube 60 from the threaded column of the embedded part, and convenient for disassembly.

[0051] like Figure 8 As shown, the inner diameter of the sleeve 70 is larger than the diameter of the threaded column of the embedded part 10, and the lower diameter of the inner wall of the sleeve 70 is matched with the outer diameter of the embedded section 62 of the threaded tube 60 to form an accommodating section 71, and the lower end of the accommodating section 71 is provided with an inner chamfer. The upper end of the sleeve 70 is provided with an annular flange 72, and the outer diameter of the annular flange 72 is smaller than the diameter of the fixing hole of the base 21. The sleeve 70 is sleeved on the threaded column of the embedded part 10 from top to bottom, and the embedded section 62 of the threaded tube 60 is inserted into the accommodating section 71. The length of the accommodating section 71 is greater than the length of the embedded section 62.

[0052] The threaded tube 60 is threaded with an adjusting bolt 81 for adjusting the height and verticality of the concrete track bridge support 20. The upper end of the threaded column of the embedded part 10 passes through the base 21 and is fixed by a fixing bolt 82.

[0053] Track glue 90 is poured into the gap between the bottom surface of the base 21 and the backing plate 50, and into the gap between the inner wall of the fixing hole of the base 21 and the outer wall of the sleeve 70 to achieve fixation.

[0054] In combination with the above specific structural description, the replaceable concrete rail bridge support structure provided by the present invention has the following assembly method:

[0055] In the first step, the embedded component 10 is embedded in the embedded pit 31 on the foundation 30 .

[0056] The second step is to lay the steel plate 40 in the pre-buried pit 31 .

[0057] The third step is to lay the backing plate 50 on the steel plate 40 .

[0058] In the fourth step, the threaded tube 60 is mounted on the threaded column of the embedded part 10 from top to bottom, and is slid downward so that the flange 63 enters the square hole on the backing plate 50 , and the bottom surface of the flange 63 is in contact with the top surface of the steel plate 40 .

[0059] Step 5: Install the adjusting bolt 81 on the threaded tube 60 .

[0060] The sixth step is to hoist the concrete rail bridge support 20 and make the threaded column of the embedded part 10 pass upward from the fixing hole on the base 21.

[0061] Step 7: Adjust the height and verticality of the concrete track bridge support 20 by adjusting the bolts 81 to meet the design requirements.

[0062] In the eighth step, the sleeve 70 is placed on the threaded column of the embedded part 10 from top to bottom, and the embedded section of the threaded tube 60 is inserted into the receiving section 71 of the sleeve 70, as shown in FIG. Fig. 9 shown.

[0063] The ninth step is to fix the concrete rail bridge support 20 to the threaded column of the embedded part 10 by means of the fixing bolts 82. During the process of tightening the fixing bolts 82, the sleeve 70 is continuously moved downward, and the embedded section 62 of the threaded tube 60 is gradually inserted into the receiving section 71 of the sleeve 70.

[0064] In the tenth step, the track glue 90 is poured between the bottom surface of the base 21 and the backing plate 50 , and the track glue 90 is poured into the gap between the fixing hole of the base 21 and the sleeve 70 .

[0065] When the concrete rail bridge support 20 needs to be disassembled and replaced, the fixing bolts 82 are first loosened, and then the concrete rail bridge support 20 is hoisted by a lifting device, and the concrete rail bridge support 20 is lifted upward, together with the pad 50, the threaded pipe 60, the sleeve 70 and the track cement 90 to form a whole, and is pulled out as a whole from the threaded column of the embedded part 10. After replacing the new concrete rail bridge support 20, the pad 50, the threaded pipe 60, the adjustment bolts 81, the sleeve 70 and the fixing bolts 82 are installed in sequence to fix the new concrete rail bridge support 20 on the threaded column of the embedded part 10 in the original position.

[0066] Based on the description of the above specific embodiments, the replaceable concrete rail bridge support structure provided by the present invention has the following advantages compared with the prior art:

[0067] First, the biggest difficulty in achieving the detachable and replaceable concrete rail bridge pillars is to smoothly match with the embedded threaded columns. However, there has been no good solution to ensure that the embedded threaded columns will not be contacted when pouring track cement, which makes disassembly difficult. The present application adopts a method of mutually inserting and combining threaded pipes and sleeves to achieve complete isolation from the embedded threaded columns. Therefore, the concrete rail bridge pillars can be easily disassembled and replaced, which improves efficiency.

[0068] Second, in the prior art, if the sleeve is too long and the installation of the adjustment bolt is inconvenient, the skilled person in the art may consider cutting the sleeve. However, after cutting the sleeve, when pouring the track cement, the track cement will penetrate into the sleeve from between the two ends of the sleeve and combine with the threaded column, making it difficult to disassemble. In the present application, the threaded pipe is shorter, and the installation of the adjustment bolt is faster and more convenient. The upper end of the threaded pipe is inserted into the sleeve, which can prevent the track cement from entering the sleeve during the pouring process, making it easy to disassemble the concrete rail bridge pillar.

[0069] Third, the flange at the lower end of the threaded tube cooperates with the square hole on the pad to play a limiting role, so that the adjusting bolt can be easily adjusted.

[0070] Fourth, an annular flange is provided at the upper end of the sleeve to prevent the rail cement from entering the sleeve from the upper end when the rail cement is poured into the fixing hole and combining with the threaded column, causing difficulty in disassembly.

[0071] Fifth, in the scheme of the present invention, the threaded pipe and the sleeve are inserted into each other for combination. If the foundation is uneven during construction, the insertion and matching relationship of the threaded pipe and the sleeve can be conveniently adjusted up and down, thereby ensuring that the fixing bolt is tightened and the upper end surface of the sleeve is in contact, preventing the track glue from entering the interior of the sleeve during pouring, and facilitating disassembly.

[0072] Finally, it should be noted that the terms "comprises", "includes" or any other variants thereof as used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0073] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A replaceable concrete rail bridge support structure, comprising a concrete rail bridge support installed by embedded parts, wherein the embedded parts are embedded and fixed in a foundation, characterized in that: Also includes: A steel plate, on which a through hole is provided that matches the threaded column of the embedded part, the steel plate is laid in the embedded pit on the foundation, the outer dimensions of the steel plate are larger than the outer dimensions of the base of the concrete rail bridge support, and the steel plate is provided with four through holes at positions corresponding to the embedded part, and the four through holes correspond to the fixing holes of the base; A backing plate, having a square hole corresponding to the position of the embedded part, the backing plate is laid on the steel plate, and the threaded column of the embedded part is located at the center of the square hole; A threaded pipe, comprising a threaded section and an embedded section arranged at the upper end of the threaded section, a flange is arranged on the outer wall of the lower end of the threaded section, and the flange is adapted to the square hole; the threaded pipe is sleeved on the threaded column, and the flange is located in the square hole, the bottom surface of the flange is in contact with the steel plate, and an adjusting bolt is arranged on the threaded section; A sleeve, the lower end of which has a receiving section, the inner diameter of which matches the outer diameter of the embedding section, the sleeve is sleeved on the threaded column, and the embedding section is inserted into the receiving section; The threaded column is fixed by fixing bolts after passing through the base upwards, and rail glue is poured between the base and the pad, and between the inner wall of the fixing hole, the sleeve and the threaded tube; An annular flange is arranged at the upper end of the sleeve.

2. The replaceable concrete rail bridge support structure according to claim 1 is characterized in that: The upper end of the embedding section is provided with an outer chamfer, and the lower end of the receiving section is provided with an inner chamfer.

3. The replaceable concrete rail bridge support structure according to claim 1 is characterized in that: The diameter of the annular flange is smaller than the diameter of the fixing hole.

4. The replaceable concrete rail bridge support structure according to claim 1 is characterized in that: The material of the sleeve is nylon.

5. The replaceable concrete rail bridge support structure according to claim 1, characterized in that: The material of the backing plate is nylon.

6. The replaceable concrete rail bridge support structure according to claim 1, characterized in that: An annular groove is provided on the bottom surface of the flange of the threaded section.

7. The replaceable concrete rail bridge support structure according to claim 6 is characterized in that: The annular grooves are arranged as two concentrically spaced grooves.

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