Composite sleeper with high tensile strength

Abstract

The high-tensile-strength composite sleeper comprises a sleeper body, a plurality of reinforcing steel bars distributed in a rectangular array mode are arranged in the sleeper body, the ends of the reinforcing steel bars penetrate through the ends of the sleeper body, and reinforcing connecting pieces are arranged on the inner sides of the reinforcing steel bars distributed in the rectangular array mode. Two symmetrically distributed rail positioning clamping grooves are formed in the upper surface of the sleeper main body, an inverted trapezoidal groove located between the two rail positioning clamping grooves is further formed in the sleeper main body, and mounting holes are formed in the bottom surfaces of the rail positioning clamping grooves. The binding sleeves are sleeved on the outer sides of the two adjacent reinforcing steel bars, and the reinforcing metal connecting rods are connected to the two vertically adjacent insertion positioning holes, so that the vertically adjacent reinforcing steel bars which are distributed along the oblique line direction are subjected to oblique tension, and the reinforcing steel bars which are distributed in a rectangular shape are concentrated towards the middle; therefore, the structural strength and the tensile property of the sleeper are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of sleepers, in particular to a high-tensile-strength composite sleeper. Background Art

[0002] Sleepers, also known as railroad sleepers, are a type of railway accessories. They not only support the rails, but also maintain their position and transfer the huge pressure from the rails to the track bed. They must have a certain degree of flexibility and elasticity. Sleepers were originally made of wood. Wood has good elasticity and insulation properties, is less affected by temperature changes in the surrounding medium, is light in weight, is easy to process and replace on the line, and has sufficient displacement resistance.

[0003] With the development of science and technology, most of the sleepers used now are composite sleepers made of reinforced concrete materials. Composite sleepers have a long service life, high stability, low maintenance workload, and much lower damage and scrap rates than wooden sleepers. On seamless lines, the stability of reinforced concrete sleepers is an average of 15% to 20% higher than that of wooden sleepers. Therefore, they are particularly suitable for high-speed passenger lines.

[0004] However, the internal reinforcement ribs of the existing sleepers are opposed to each other, resulting in relatively poor tensile strength of the sleepers in the width direction; therefore, it does not meet the existing needs. In this regard, we propose a high tensile strength composite sleeper. Utility Model Content

[0005] The purpose of the utility model is to provide a high tensile strength composite sleeper to solve the problem proposed in the above background technology that the internal reinforcing ribs of the sleeper are opposed to each other, resulting in relatively poor tensile strength of the sleeper in the width direction.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-tensile strength composite sleeper, comprising a sleeper body, wherein the interior of the sleeper body is provided with a plurality of reinforcing steel bars distributed in a rectangular array, the ends of the reinforcing steel bars pass through the ends of the sleeper body, and the inner sides of the reinforcing steel bars distributed in the rectangular array are provided with reinforcing connectors, the upper surface of the sleeper body is provided with two symmetrically distributed rail positioning slots, and the sleeper body is also provided with an inverted trapezoidal groove located between the two rail positioning slots, the bottom surface of the rail positioning slot is provided with a mounting hole, and the mounting hole vertically downwardly passes through the sleeper body and the bottom end is flush with the bottom surface of the sleeper body.

[0007] Preferably, the reinforcement connector includes a plurality of binding sleeves, which are sleeved on the outside of two adjacent reinforcing steel bars, and every two adjacent binding sleeves do not contact each other.

[0008] Preferably, the binding sleeve comprises two upper and lower parallel straight sides and two semicircular ends, and the radius of the binding sleeve ends is consistent with the outer diameter of the reinforcing steel bar.

[0009] Preferably, two groups of symmetrical holes are provided on one side of the two straight sides of the binding sleeve, and each group of holes includes a plurality of equally spaced plug-in positioning holes.

[0010] Preferably, a reinforcing metal connecting rod is provided between the two upper and lower adjacent binding sleeves, and the reinforcing metal connecting rod has a U-shaped structure and an end portion is inserted into the inner side of the insertion positioning hole.

[0011] Preferably, the end length of the reinforcing metal connecting rod is consistent with the depth of the plug-in positioning hole, and the depth of the plug-in positioning hole is half of the width of the binding sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model is provided with a binding sleeve on the outside of two adjacent reinforcing steel bars, and is connected to the two upper and lower adjacent plug-in positioning holes through a reinforcing metal connecting rod, so that the reinforcing steel bars distributed along the oblique direction and adjacent to each other are subjected to oblique tension, so that the rectangularly distributed reinforcing steel bars are concentrated in the middle, thereby enhancing the structural strength and tensile performance of the sleeper. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the reinforcing steel bars and the reinforcing connectors of the present invention;

[0016] Figure 3 This is a first distribution state diagram of the reinforcement connector of the utility model outside the reinforcement steel bar;

[0017] Figure 4 This is a second distribution diagram of the reinforcement connector of the utility model outside the reinforcement steel bar;

[0018] Figure 5 This is a schematic diagram of the structure of the reinforced connector of the present invention.

[0019] In the figure: 1. Sleeper body; 2. Reinforced steel bars; 3. Reinforced connectors; 31. Bundling sleeves; 32. Reinforced metal connecting rods; 33. Insertion positioning holes; 4. Rail positioning slots; 5. Mounting holes. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] like Figure 1 and Figure 2 As shown, a high tensile strength composite sleeper is provided, wherein the interior of the sleeper body 1 is provided with a plurality of reinforcing steel bars 2 distributed in a rectangular array, the ends of the reinforcing steel bars 2 pass through the ends of the sleeper body 1, and the inner sides of the reinforcing steel bars 2 distributed in the rectangular array are provided with reinforcing connectors 3, and the upper surface of the sleeper body 1 is provided with two symmetrically distributed rail positioning slots 4, and the sleeper body 1 is also provided with an inverted trapezoidal groove located between the two rail positioning slots 4, and the bottom surface of the rail positioning slot 4 is provided with a mounting hole 5, which passes through the sleeper body 1 vertically downward and the bottom end is flush with the bottom surface of the sleeper body 1, and the reinforcing connectors 3 are used to reinforce the reinforcing steel bars 2 distributed in the rectangular array in the width direction of the sleeper body 1, thereby increasing the structural stability of the reinforcing steel bars 2 distributed in the rectangular array, thereby improving the tensile strength in the width direction of the sleeper.

[0022] like Figures 2 to 5 As shown, the reinforcement connector 3 includes multiple bundling sleeves 31, which are sleeved on the outside of two adjacent reinforcing steel bars 2. Every two adjacent bundling sleeves 31 do not contact each other. The bundling sleeves 31 are evenly distributed and connect the reinforcing steel bars 2 distributed in a rectangular array in pairs to avoid mutual interference between adjacent bundling sleeves 31.

[0023] The binding sleeve 31 includes two parallel straight sides and two semicircular ends. The radius of the end of the binding sleeve 31 is consistent with the outer diameter of the reinforcing steel bar 2, ensuring that there will be no shaking between the binding sleeve 31 and the reinforcing steel bar 2 after the binding sleeve 31 is connected to the reinforcing steel bar 2, ensuring the stability of the binding sleeve 31 on the outside of the reinforcing steel bar 2.

[0024] Two straight sides of the bundling sleeve 31 are each provided with two groups of symmetrical holes on one side, and each group of holes includes a plurality of equally spaced plug-in positioning holes 33. A reinforcing metal connecting rod 32 is provided between the two adjacent bundling sleeves 31 above and below. The structure of the reinforcing metal connecting rod 32 is U-shaped and the end portion is inserted into the inner side of the plug-in positioning hole 33.

[0025] The end length of the reinforcing metal connecting rod 32 is consistent with the depth of the insertion positioning hole 33. The depth of the insertion positioning hole 33 is half the width of the binding sleeve 31. The reinforcing metal connecting rod 32 is used to connect the upper and lower adjacent binding sleeves 31, so that the reinforcing steel bars 2 distributed along the diagonal direction and adjacent to each other are subjected to diagonal tension, so that the rectangularly distributed reinforcing steel bars 2 are concentrated in the middle, thereby enhancing the structural strength and tensile performance of the sleeper.

[0026] Working principle: First, insert two reinforcing steel bars 2 into the inner side of the same bundle sleeve 31. After the reinforcing steel bars 2 are inserted into the inner side of the bundle sleeves 31 located in the same vertical plane, and all the bundle sleeves 31 are kept parallel to the cross-section of the sleeper body 1, the end of the reinforcing metal connecting rod 32 is inserted into the inner side of the insertion positioning hole 33 on the side of the bundle sleeve 31, and all the two adjacent bundle sleeves 31 are connected. Then continue to install the remaining bundle sleeves 31. When installing the bundle sleeve 31, it is necessary to stagger the bundle sleeve 31 installed later with the already installed bundle sleeve 31 by one position. , so that two bundling sleeves 31 of the same height and distributed front and back connect three reinforcing steel bars 2 instead of four reinforcing steel bars 2, repeat the installation operation of the installed bundling sleeves 31 and the reinforcing metal connecting rods 32 to connect the subsequently installed bundling sleeves 31 and the reinforcing metal connecting rods 32, and apply oblique tension to the reinforcing steel bars 2 distributed along the oblique direction and adjacent to each other up and down through the bundling sleeves 31 and the reinforcing metal connecting rods 32, so that the reinforcing steel bars 2 distributed in the rectangular array will not spread outward, and the reinforcing steel bars 2 distributed in the rectangular array will be concentrated in the middle, thereby enhancing the structural strength and tensile performance of the sleeper.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A high tensile strength composite sleeper, comprising a sleeper body (1), characterized in that: The interior of the sleeper body (1) is provided with a plurality of reinforcing steel bars (2) distributed in a rectangular array, the ends of the reinforcing steel bars (2) pass through the ends of the sleeper body (1), and a reinforcing connector (3) is provided inside the reinforcing steel bars (2) distributed in the rectangular array. The upper surface of the sleeper body (1) is provided with two symmetrically distributed rail positioning slots (4), and the sleeper body (1) is also provided with an inverted trapezoidal groove located between the two rail positioning slots (4). The bottom surface of the rail positioning slot (4) is provided with a mounting hole (5), and the mounting hole (5) vertically passes through the sleeper body (1) downward, and the bottom end is flush with the bottom surface of the sleeper body (1).

2. The high tensile strength composite sleeper according to claim 1, characterized in that: The reinforcement connector (3) comprises a plurality of binding sleeves (31), wherein the binding sleeves (31) are sleeved on the outside of two adjacent reinforcing steel bars (2), and each two adjacent binding sleeves (31) do not contact each other.

3. The high tensile strength composite sleeper according to claim 2, characterized in that: The binding sleeve (31) comprises two upper and lower parallel straight sides and two semicircular ends, and the radius of the ends of the binding sleeve (31) is consistent with the outer diameter of the reinforcing steel bar (2).

4. The high tensile strength composite sleeper according to claim 3, characterized in that: Two straight sides of the binding sleeve (31) are each provided with two groups of symmetrical holes on one side, and each group of holes includes a plurality of equally spaced insertion positioning holes (33).

5. The high tensile strength composite sleeper according to claim 4, characterized in that: A reinforcing metal connecting rod (32) is provided between the two upper and lower adjacent binding sleeves (31). The reinforcing metal connecting rod (32) has a U-shaped structure and an end portion is inserted into the inner side of the insertion positioning hole (33).

6. The high tensile strength composite sleeper according to claim 5, characterized in that: The length of the end of the reinforcing metal connecting rod (32) is consistent with the depth of the plug-in positioning hole (33), and the depth of the plug-in positioning hole (33) is half the width of the binding sleeve (31).

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