Trapezoidal sleeper wrapping sleeve

Abstract

The utility model relates to the technical field of urban rail transit, and discloses a trapezoidal sleeper wrapping sleeve, the top of the wrapping sleeve is provided with a sleeve opening, the bottom of the wrapping sleeve is closed, the wrapping sleeve comprises a main body part and a lower convex part which are connected, the main body part is internally provided with a first cavity matched with a rail bearing table of a trapezoidal sleeper, and the lower convex part is provided with a second cavity matched with the rail bearing table of the trapezoidal sleeper. The lower convex parts are arranged at the bottom of the main body part, a second cavity matched with an anti-vibration pad of the trapezoidal sleeper is formed in each lower convex part, the top of each second cavity communicates with the corresponding first cavity, and the multiple lower convex parts are arranged in the length direction of the wrapping sleeve at intervals; a mounting groove is formed between every two adjacent lower convex parts, and the mounting grooves are filled with isolation materials. The anti-vibration pad is easy and convenient to construct, and concrete can be prevented from entering the area without the anti-vibration pad during construction.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rail transit, in particular to a trapezoidal sleeper wrapping sleeve. Background Art

[0002] The trapezoidal sleeper ballast consists of two parts: prefabricated trapezoidal sleepers and cast-in-place base. The current traditional construction plan for the trapezoidal sleeper ballast is to first erect the prefabricated trapezoidal sleepers and then cast the cast-in-place base. Vibration-damping pads are set under the rail platform of the prefabricated trapezoidal sleeper part. In order to prevent the concrete from entering the area without vibration-damping pads (vibration-damping pads are set at both ends of the bottom of the rail platform and the area between two adjacent vibration-damping pads) during the casting of the cast-in-place base, causing the trapezoidal sleepers to have hard contact with the cast-in-place base, affecting the vibration-damping effect and endangering the structural safety, before casting the cast-in-place base, isolation materials are usually pasted on the contact area of ​​the prefabricated trapezoidal sleepers where the vibration-damping pads are not set, and the prefabricated trapezoidal sleepers are wrapped with wrapping sleeves. This approach has the following problems:

[0003] (1) The traditional installation of isolation materials for trapezoidal sleepers requires that the isolation materials be installed outside the range of the vibration damping pads, then fixed with tape, and then wrapped with polyethylene wrapping sleeves. There are many steps and the trapezoidal sleepers need to be lifted before installation, which poses a high construction risk.

[0004] (2) The traditional wrapping material is polypropylene, which has poor air permeability and is not conducive to the discharge of concrete bubbles during the construction of the cast-in-place base of the trapezoidal sleeper. The construction quality of the cast-in-place base is difficult to ensure, and honeycomb surface is prone to occur on the concrete surface.

[0005] (3) Traditional wrapping sleeves do not have self-tightening measures. Temporary measures such as wrapping with tape are usually used on site. Large wrinkles often appear on the wrapping sleeves. After pouring, the wrinkles form interlayer voids, affecting the structural stress.

[0006] (4) After the cast-in-place ballast bed of the trapezoidal sleeper is cast, the exposed part of the wrapping sleeve needs to be cut. It is difficult to ensure smooth cutting on site, which affects the appearance. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a trapezoidal rail sleeper wrapping sleeve which is easy to construct and can prevent concrete from entering into an area where no vibration damping pad is arranged during construction.

[0008] In order to solve the above technical problems, the utility model provides a wrapping cover having a sleeve opening on the top, and a closed bottom, the wrapping cover comprising a connected main body and a lower protrusion, the main body being provided with a first cavity matching the rail support platform of the trapezoidal rail sleeper, the lower protrusion being provided at the bottom of the main body, the interior of the lower protrusion being provided with a second cavity matching the vibration-damping pad of the trapezoidal rail sleeper, the top of the second cavity being connected to the first cavity, a plurality of the lower protrusions being provided and being arranged at intervals along the length direction of the wrapping cover, a mounting groove being formed between two adjacent lower protrusions, and the mounting groove being filled with an isolation material.

[0009] As a preferred embodiment of the present invention, the sleeve is provided with multiple groups of straps, the strap groups include two fixing straps, one end of the fixing strap is fixedly connected to one side of the sleeve, the other end of the fixing strap is connected to the other side of the sleeve via Velcro, and the two fixing straps are cross-arranged.

[0010] As a preferred solution of the utility model, a tightening drawstring is provided at the sleeve opening.

[0011] As a preferred solution of the utility model, a tear strip is provided at the bottom end of the side of the wrapping sleeve, and the tear strip is arranged along the outer circumference of the wrapping sleeve.

[0012] As a preferred solution of the present invention, the material of the wrapping sleeve and the pocket is geotextile.

[0013] The utility model embodiment provides a trapezoidal sleeper wrapping cover. Compared with the prior art, its beneficial effects are: the main body of the wrapping cover is provided with a first cavity matching the rail support platform of the trapezoidal sleeper, and the interior of the lower protrusion is provided with a second cavity matching the vibration-damping pad of the trapezoidal sleeper, that is, the present embodiment can wrap the trapezoidal sleeper in a matching manner, and the mounting groove is filled with isolation material. When the wrapping cover wraps the trapezoidal sleeper rail, the isolation material is arranged between two adjacent vibration-damping pads. The isolation material can prevent concrete from entering between two adjacent vibration-damping pads, thereby preventing the trapezoidal sleeper from making hard contact with the cast-in-place base. The construction is simple and the construction efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model when it is used;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the tightening drawstring of the utility model;

[0017] In the figure, 1, wrapping sleeve; 11, sleeve opening; 111, fixing strap; 112, tightening drawstring; 12, main body; 121, first cavity; 13, lower convex part; 131, second cavity; 14, installation groove; 15, isolation material; 16, tear tape. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in the present invention to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] like Figure 1-3 As shown, a sleeve opening 11 is provided at the top of the wrapping sleeve 1, and the bottom of the wrapping sleeve 1 is closed. The wrapping sleeve 1 includes a connected main body 12 and a lower protrusion 13. A first cavity 121 matching the rail support platform of the trapezoidal sleeper is provided in the main body 12, and the lower protrusion 13 is provided at the bottom of the main body 12. A second cavity 131 matching the vibration-damping pad of the trapezoidal sleeper is provided inside the lower protrusion 13. The top of the second cavity 131 is connected to the first cavity 121. A plurality of lower protrusions 13 are provided and are arranged at intervals along the length direction of the wrapping sleeve 1. It can be understood that the lower protrusions 13 correspond one-to-one to the vibration-damping pads of the trapezoidal sleeper, and a mounting groove 14 is formed between two adjacent lower protrusions 13, and the mounting groove 14 is filled with an isolation material 15.

[0021] The working principle of this embodiment is as follows: during the construction of the trapezoidal sleeper ballast bed, prefabricated trapezoidal sleepers are first erected; then the rail support platform of the trapezoidal sleeper is placed into the first cavity 121 through the sleeve 11, and the vibration-damping pad of the trapezoidal sleeper is placed into the second cavity 131. At this time, the main body 12 wraps the trapezoidal sleeper, the lower protrusion 13 wraps the vibration-damping pad of the trapezoidal sleeper, and the isolation material 15 is located between two adjacent vibration-damping pads; then the base is poured. During the pouring process, due to the presence of the isolation material 15, the concrete will not enter between two adjacent vibration-damping pads, thereby preventing the trapezoidal sleeper from making hard contact with the cast-in-place base; finally, the exposed part of the wrapping sleeve 1 is removed. It can be understood that the remaining part of the wrapping sleeve 1 will not affect the structural performance of the trapezoidal sleeper ballast bed.

[0022] In the utility model, the main body 12 of the wrapping sleeve 1 is provided with a first cavity 121 matching the rail support platform of the trapezoidal sleeper, and the interior of the lower protrusion 13 is provided with a second cavity 131 matching the vibration-damping pad of the trapezoidal sleeper, that is, the present embodiment can wrap the trapezoidal sleeper in a matching manner, and the mounting groove 14 is filled with an isolation material 15. When the wrapping sleeve 1 wraps the trapezoidal sleeper rail, the isolation material 15 is arranged between two adjacent vibration-damping pads. The isolation material 15 can prevent concrete from entering between two adjacent vibration-damping pads, thereby preventing the trapezoidal sleeper from making hard contact with the cast-in-place base. The construction is simple and the construction efficiency is high.

[0023] Exemplarily, the sleeve 11 is provided with multiple groups of straps, which include two fixing straps 111. One end of the fixing strap 111 is fixedly connected to one side of the sleeve 11, and the other end of the fixing strap 111 is connected to the other side of the sleeve 11 through Velcro. The two fixing straps 111 are cross-arranged. The fixing straps 111 can tighten the connection between the wrapping sleeve 1 and the trapezoidal sleeper to avoid loosening during construction.

[0024] Exemplarily, a tightening drawstring 112 is provided at the sleeve 11. By pulling the tightening drawstring 112, the tightening degree of the sleeve 11 can be adjusted, thereby adjusting the flatness of the connection between the trapezoidal sleeper and the wrapping sleeve 1 to avoid wrinkles in the wrapping sleeve 1 that affect the casting quality.

[0025] Exemplarily, a tear tape 16 is provided at the bottom end of the side of the wrapping sleeve 1. The tear tape 16 is arranged along the outer circumference of the wrapping sleeve 1. The tear tape 16 can be torn open by hand. After tearing open the tear tape 16, the exposed part of the wrapping sleeve 1 can be removed, which is easy to operate.

[0026] Exemplarily, the wrapping sleeve 1 is made of geotextile, which has a soft and porous surface, so that gas can be easily discharged during concrete pouring, and can effectively reduce the appearance of honeycomb surface during the pouring of the base.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A trapezoidal sleeper wrapping sleeve, characterized in that: The top of the wrapping cover is provided with a sleeve opening, and the bottom of the wrapping cover is closed. The wrapping cover includes a connected main body and a lower protrusion. The main body is provided with a first cavity matching the rail support platform of the trapezoidal sleeper. The lower protrusion is provided at the bottom of the main body. The interior of the lower protrusion is provided with a second cavity matching the vibration-damping pad of the trapezoidal sleeper. The top of the second cavity is connected to the first cavity. There are multiple lower protrusions and they are arranged at intervals along the length direction of the wrapping cover. A mounting groove is formed between two adjacent lower protrusions, and the mounting groove is filled with isolation material.

2. The trapezoidal sleeper wrapping cover according to claim 1, characterized in that: The sleeve is provided with multiple groups of straps, and the strap groups include two fixing straps, one end of the fixing strap is fixedly connected to one side of the sleeve, and the other end of the fixing strap is connected to the other side of the sleeve through Velcro, and the two fixing straps are cross-arranged.

3. The trapezoidal sleeper wrapping cover according to claim 1, characterized in that: A tightening drawstring is provided at the sleeve opening.

4. The trapezoidal sleeper wrapping cover according to claim 1, characterized in that: A tearing strip is provided at the bottom end of the side of the wrapping sleeve, and the tearing strip is arranged along the outer circumference of the wrapping sleeve.

5. The trapezoidal sleeper wrapping cover according to claim 1, characterized in that: The material of the wrapping sleeve is geotextile.

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