Integral damping sleeper of polyurethane parcel
阅读说明：本技术 一种聚氨酯包裹整体式减振轨枕 (Integral damping sleeper of polyurethane parcel ) 是由 黄治娟 尹华拓 李元飞 胡明利 巨洪 张红娟 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种聚氨酯包裹整体式减振轨枕,包括轨枕本体,轨枕本体上端两侧具有台阶,减振轨枕还包括弹性扣压板、密封层、聚氨酯隔离层、填充保护层以及聚氨酯弹性层,弹性扣压板一端设置于台阶上,密封层、聚氨酯隔离层与填充保护层由上至下顺次包覆于轨枕本体两侧,所述聚氨酯弹性层镶嵌于轨枕本体底部,所述聚氨酯隔离层、填充保护层以及聚氨酯弹性层均和轨枕本体为预成型一体式结构。该减振轨枕能防止由于施工、车辆运行原因造成的轨枕空吊、道床水泥翻浆等现象。其横向、竖向约束力更大,轨距保持的能力更强,进一步增强了减振效果。(The invention discloses a polyurethane-wrapped integral vibration-damping sleeper, which comprises a sleeper body, wherein steps are arranged on two sides of the upper end of the sleeper body, the vibration-damping sleeper further comprises an elastic buckling and pressing plate, a sealing layer, a polyurethane isolation layer, a filling protection layer and a polyurethane elastic layer, one end of the elastic buckling and pressing plate is arranged on the steps, the sealing layer, the polyurethane isolation layer and the filling protection layer are sequentially wrapped on two sides of the sleeper body from top to bottom, the polyurethane elastic layer is embedded at the bottom of the sleeper body, and the polyurethane isolation layer, the filling protection layer and the polyurethane elastic layer are all in a preformed integrated structure with the sleeper body. The vibration-damping sleeper can prevent phenomena such as sleeper air suspension, ballast bed cement grout turnover and the like caused by construction and vehicle operation. The horizontal and vertical constraint force is larger, the capability of keeping the track gauge is stronger, and the vibration reduction effect is further enhanced.)
1. The utility model provides an integral damping sleeper of polyurethane parcel, includes sleeper body (1), sleeper body (1) upper end both sides have the step, its characterized in that, the damping sleeper still includes elasticity lock plate (2), sealing layer (3), polyurethane isolation layer (4), packing protective layer (5) and polyurethane elastic layer (6), elasticity lock plate (2) one end sets up on the step, cladding in sleeper body (1) both sides from top to bottom in order sealing layer (3), polyurethane isolation layer (4) and packing protective layer (5), polyurethane elastic layer (6) are inlayed in sleeper body (1) bottom, polyurethane isolation layer (4), packing protective layer (5) and polyurethane elastic layer (6) all with sleeper body (1) be the integral type structure of preforming.
2. The polyurethane-wrapped integral vibration-damping sleeper according to claim 1, wherein said elastic buckling plate (2) comprises a metal branch (21), an insulating layer (22) and an elastic layer (23), said insulating layer (22) is wrapped on both sides and top of the metal branch (21), and said elastic layer (23) is wrapped on bottom of the metal branch (21).
3. The polyurethane-wrapped integral vibration-damping sleeper as claimed in claim 2, wherein the metal branch (21) is provided with mounting and fixing holes (212) at both ends thereof.
4. The integral type vibration-damping sleeper wrapped by polyurethane as claimed in claim 1, wherein said polyurethane isolation layer (4) is bonded with the sleeper body (1) into a whole by means of die casting, and a self-waterproof structure (41) of a reversed eave type is arranged on the outer side of the integrated type vibration-damping sleeper body, and said self-waterproof structure (41) of a reversed eave type forms a closed ring along the periphery of said sleeper body.
5. The integral type vibration-damping sleeper wrapped by polyurethane according to claim 1, wherein a plurality of bulges (61) are arranged on one end surface of the polyurethane elastic layer (6) at intervals, and the end surface of the polyurethane elastic layer (6) provided with the bulges (61) is provided with the reticulate patterns (62), and the polyurethane elastic layer (6) is embedded at the bottom of the sleeper body (1) through the bulges (61).
Technical Field
The invention belongs to the technical field of rail transit damping systems, and particularly relates to a polyurethane-coated integral damping sleeper.
Background
With the high-speed development of subways and intercity railways in China, the requirement of people on sleeper vibration reduction is increasingly improved; the sleeper vibration reduction is a vibration reduction form between the whole track bed vibration reduction and the fastener vibration reduction, and is seen by a plurality of tradesmen at the initial stage of entering the market by virtue of excellent cost performance and vibration reduction performance.
The existing sleeper damping structure generally comprises rubber sleeve shoes positioned at the bottom and around a damping sleeper and a damping base plate positioned between the bottom of a sleeper body and the rubber sleeve shoes; the rubber boot is made of compact rubber, and a groove structure is designed for adjusting rigidity; the rubber sleeve boots are connected with the sleeper body in a cold bonding and bundling way; the vibration reduction backing plate is of a rubber foaming structure and is directly placed at the bottom of the rubber sleeve boot. The conventional rubber sleeve shoe type vibration reduction sleeper realizes vibration reduction by using foamed rubber at the bottom and isolation from a track bed by using a rubber sleeve shoe, so that the vibration reduction sleeper has enough free space, and the influence of wheel rail vibration on the environment can be effectively reduced.
However, the drawbacks of the existing sleeper damping mainly include the following aspects:
1. rubber sleeve boots and sleeper body adopt the form of cold bonding and tying up to be connected in current sleeper damping, and this kind of connected mode easily receives construction quality and later stage vehicle operation's influence, easily appears breaking away from between rubber sleeve boots and the sleeper, causes the sleeper to hang empty, and the gauge change is big, leads to the damping effect inefficacy and influences driving safety.
2. There is not seal structure in the department between current damping sleeper and the railway roadbed, inside fluid pollutant such as water, oil easily direct entering damping sleeper, the damping effect became invalid after the rubber tie plate soaked water or the immersion oil.
3. The existing damping sleeper only provides restraint by the friction force between the rubber sleeve shoes and the track bed in the vertical direction, the restraint strength is not enough, the damping sleeper is easy to be pulled by a steel rail in the running process of a vehicle, a gap is formed between the bottom of the damping sleeper and the track bed, the phenomena of air suspension and cement grout turnover of the track bed are caused, the damping effect is invalid, and the driving safety is influenced.
4. The existing damping sleeper adopts a foamed rubber base plate as a main damping component, and has the advantages of high aging speed and short service life under the conditions of soaking in water and oil.
Disclosure of Invention
The invention solves the defects of the prior art, and provides the polyurethane-wrapped integral type vibration-damping sleeper which is better in sealing performance and waterproof performance, larger in horizontal and vertical constraining force and better in vibration-damping effect.
The technical scheme adopted by the invention is as follows: the utility model provides an integral damping sleeper of polyurethane parcel, includes the sleeper body, sleeper body upper end both sides have the step, the damping sleeper still includes that elasticity detains clamp plate, sealing layer, polyurethane isolation layer, packing protective layer and polyurethane elastic layer, elasticity detains clamp plate one end by setting up on the step, sealing layer, polyurethane isolation layer and packing protective layer from top to bottom cladding in sleeper body both sides in order, the polyurethane elastic layer is inlayed in sleeper body bottom, polyurethane isolation layer, packing protective layer and polyurethane elastic layer all with the sleeper body formula integral structure of preforming as an organic whole.
Preferably, the elastic buckling and pressing plate comprises a metal branch, an insulating layer and an elastic layer, wherein the insulating layer covers two sides and the top of the metal branch, and the elastic layer covers the bottom of the metal branch.
Preferably, the two ends of the metal branch are provided with mounting and fixing holes.
Preferably, the polyurethane isolation layer is integrated with the sleeper body in a bonding mode through mould pouring, a reversed eave type self-waterproof structure is arranged on the outer side of the polyurethane isolation layer, and the reversed eave type self-waterproof structure is arranged along the periphery of the sleeper body to form a closed ring.
Preferably, a plurality of bulges are arranged on one end face of the polyurethane elastic layer at intervals, the end face of the polyurethane elastic layer provided with the bulges is provided with a reticulate pattern, and the polyurethane elastic layer is embedded at the bottom of the sleeper body through the bulges.
Compared with the prior art, the invention has the following beneficial effects:
1. mainly adopt polyurethane isolation layer and polyurethane elastic layer, the polyurethane isolation layer adopts preforming integral type structure with polyurethane elastic layer and sleeper body moreover, and this damping sleeper is horizontal, vertical constraining force is bigger, and the ability that the gauge length kept is stronger.
2. The polyurethane isolation layer adopts the mould to pour and the sleeper body bonds as an organic wholely with the sleeper body, and the polyurethane elastic layer adopts arch, reticulation to inlay in the sleeper body, has changed traditional connected mode, and polyurethane isolation layer, polyurethane elastic layer are stronger with sleeper body adhesion force promptly, and the firm and steady quality that bonds has guaranteed the horizontal constraining force and the vertical constraining force of this damping sleeper simultaneously.
3. Structurally increased the sealing layer, anti eave formula from waterproof construction, chooseed the better polyether polyurethane of water resistance for use on polyurethane isolation layer and the polyurethane elastic layer material, this damping sleeper is waterproof, water resistance is better. Polyether polyurethane is preferably adopted for the polyurethane isolation layer and the polyurethane elastic layer, and the material has excellent water resistance, aging resistance, wear resistance and vibration reduction and isolation performance.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of examples 1 and 5 of the present invention;
FIG. 3 is a schematic cross-sectional side view of the elastic buckling plate according to the present invention;
FIG. 4 is a schematic sectional view of the elastic buckling plate of the present invention in a top view;
FIG. 5 is a schematic cross-sectional view of a polyurethane insulation layer of the present invention;
FIG. 6 is a schematic cross-sectional side view of a polyurethane elastomer layer according to the present invention;
FIG. 7 is a schematic sectional view of a top view of a polyurethane elastomer layer of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides an integral damping sleeper of polyurethane parcel, refers to figure 1, includes