Seamless bio-based composite elastomer expansion device

Abstract

The utility model discloses a seamless bio-based composite elastomer expansion device. A framework assembly comprises a pair of edge beams supported by a plurality of anchor plates arranged on the outer side face of the framework assembly; the pair of cross-seam curve plates are transversely arranged on the inner side surfaces of the edge beams in a staggered manner; the spring stabilizer is composed of an inner shaft which is arranged in the sleeve and abuts against the spring. The spring stabilizer is transversely arranged between the edge beams and is propped against the edge beams; and the elastic filler is filled in a U-shaped cavity formed by the edge beam and the cross-seam curve plate. F-shaped steel is adopted as the boundary beam, a pouring space is provided for the elastic filler, and the structural performance is safer and more reliable; and meanwhile, the spring stabilizer is supported. The spring stabilizer avoids vertical instability of the edge beam when the spring stabilizer is pressed, and restrains vertical deformation of the elastic filler; the adopted elastic filler is a bio-based composite elastomer material, the raw materials are green and environment-friendly, and the material cost is greatly reduced under the condition that the performance is not influenced by adding the bio-based material. And the elastic filler is used as the joint crossing surface, so that the bearing capacity is enhanced, the driving smoothness is improved, and the driving noise is reduced.

Description

Technical Field

[0001] This invention relates to a seamless bio-based composite elastomer expansion joint, specifically a seamless bridge expansion joint, belonging to the technical field of road and bridge expansion joints. Background Technology

[0002] Traditional expansion joints, such as comb-plate type and modular expansion joints, have visible gaps, which generate noise and bumps when vehicles pass over them, affecting driving comfort and even causing traffic accidents. Steel structures are costly to design and maintain and are prone to damage, while seamless expansion joints can effectively solve these problems, improving driving comfort and extending the service life of bridges.

[0003] Existing seamless expansion joints are prone to cracking at low temperatures and softening and deforming at high temperatures due to the elastic material. The overall performance of the substrate needs to be improved. They also have low cost-effectiveness. Modular, comb-type, and polyurethane seamless expansion joints of the same model (Type 80) are all too expensive and difficult to promote. Their application scenarios are limited, and they are only suitable for small and medium-sized bridges with a displacement of less than 100mm. Under medium and heavy traffic conditions, their durability of 15 years cannot be guaranteed.

[0004] Therefore, it is necessary to develop a low-cost, high-performance, seamless expansion joint that can achieve good ride comfort, maintain a large expansion range, and reduce driving noise. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a seamless bio-based composite elastomer telescopic device that is low in cost, performs well in service, and has a long service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A seamless bio-based composite elastomer telescopic device includes a skeleton assembly, a spring stabilizer, and an elastic filler.

[0008] The skeleton assembly includes a pair of side beams, which are supported and fixed longitudinally by a plurality of anchor plates placed on their outer sides; the cross-joint curved plates are transversely arranged on the inner sides of the side beams and are staggered between the side beams.

[0009] The spring stabilizer includes a sleeve, an inner shaft, and a spring; the inner shaft is movably placed inside the sleeve and abuts against the spring inside the sleeve; the spring stabilizer is horizontally placed between the side beams, and the ends of the sleeve and the inner shaft abut against the side beams respectively.

[0010] The elastic filler is filled into the U-shaped cavity formed by the side beam and the cross-slit curved plate, and the spring stabilizer is embedded therein.

[0011] An anchor ring is provided at the bottom of the aforementioned anchor plate.

[0012] The aforementioned spring stabilizer is fitted with a bellows.

[0013] At the top of the cross-joint curved plate, the inner side of the aforementioned side beam is provided with a corrugated plate.

[0014] The inner side of the aforementioned side beam is provided with ribs, which match the U-shaped grooves provided at the ends of the sleeve and the inner shaft.

[0015] The side of the anchor plate near the edge beam is L-shaped.

[0016] The top of the aforementioned side beam is bent inwards in an L-shaped hook.

[0017] The above-mentioned elastic filler is prepared by mixing modified rubber powder, composite bio-based filler, plant asphalt and polyurethane material in a mass ratio of (5-35): (5-40): (5-20): (70-100).

[0018] The modified rubber powder mentioned above is prepared by mixing base rubber powder provided by waste rubber with plant asphalt in a percentage ratio of (60-100):(1-40) and treating it at 150-300℃ for 0.1-3h.

[0019] The above-mentioned elastic filler has the following properties: tensile strength ≥5 MPa, elongation at break ≥500%, and hardness ≥20 IRHD.

[0020] The advantages of this invention are:

[0021] This invention discloses a seamless bio-based composite elastomer expansion joint, employing an anchoring structure of anchor rings and plates. This significantly improves the anchoring performance between the joint and the embedded reinforcing bars, allowing for successful single-stage concrete pouring in the anchoring zone, eliminating the need for secondary pouring and reducing construction costs. F-shaped steel is used as the side beams to provide pouring space for the elastic filler, offering a safer and more reliable structure compared to simple L-shaped steel. It also supports the central spring stabilizer, enhancing its stability. The spring stabilizer is fixedly connected to the side beams on both sides, preventing vertical instability of the side beams under pressure and constraining the vertical deformation of the elastic filler. The expansion joint design, utilizing curved plates and rubbed stainless steel plates, avoids the influence of the elastomer material on the expansion function, improving performance.

[0022] Compared with traditional elastomer materials, the elastic filler used in this invention is a bio-based composite elastomer material. The raw materials are green and environmentally friendly. At the same time, the addition of bio-based materials greatly reduces the material cost without affecting the performance.

[0023] The seamless telescopic device of this invention has a simple structure and is easy to use. Using elastic filler as the top surface at the joint not only increases the telescopic performance of the device but also enhances the load-bearing capacity of the joint surface, improving ride smoothness and reducing noise. The elastic filler, serving as a load-bearing surface, friction surface, and wear-prone surface, can be replaced according to usage intensity, extending the service life of the telescopic device and further reducing costs and maintenance. It possesses strong practicality and wide applicability. Attached Figure Description

[0024] Figure 1 This is a side view of the structural schematic diagram of the telescopic device.

[0025] Figure 2 This is a three-dimensional view of the structural schematic diagram of the telescopic device.

[0026] Figure 3 This is a schematic diagram of the anchor plate.

[0027] Figure 4 This is a schematic diagram of the cross-joint curved plate.

[0028] Figure 5 This is a schematic diagram of the washboard structure.

[0029] Figure 6 This is a schematic diagram of the spring stabilizer.

[0030] Figure 7 This is a schematic diagram of a bellows structure.

[0031] Figure 8 This is a structural diagram illustrating the implementation of a seamless telescopic device.

[0032] Figure 9 The diagram shows a schematic of the mixing of the elastic filler (Figure a) and a physical image (Figure b).

[0033] The meanings of the markings in the attached diagram are as follows: 1. Anchor plate, 2. Anchor ring, 3. Side beam, 4. Elastic filler, 5. Cross joint curve plate, 6. Spring stabilizer, 7. Corrugated board, 8. Rib, 9. Embedded steel bar, 10. Reserved groove, 11. Concrete.

[0034] 61. Sleeve; 62. Inner shaft; 63. Spring; 64. U-groove; 65. Bellows.

[0035] 41. Modified adhesive powder; 42. Composite bio-based filler; 43. Plant asphalt; polyurethane materials. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] A seamless bio-based composite elastomer telescopic device is composed of a skeleton assembly, a spring stabilizer, and an elastic filler.

[0038] The frame components are a pair, each consisting of a side beam, anchor plates, anchor rings, and cross-joint curved plates. The side beams are arranged longitudinally, with several anchor plates positioned on the outer side of the side beams via their L-shaped sides. The side beams rest on an L-shaped frame, and the anchor plates are perpendicular to the outer side of the side beams. Anchor rings are located at the bottom of the anchor plates. The cross-joint curved plates are arranged transversely on the inner side of the anchor plates, staggered between the side beams.

[0039] At the top of the cross-joint curved plate, a pair of corrugated plates are also provided between the side beams. The corrugated plates are fixed to the inner side of the side beams respectively and are staggered in the height direction to form an interlaced surface. Preferably, the corrugated plates are made of stainless steel.

[0040] Preferably, the side beam, anchor plate, anchor ring, and cross-joint curved plate are fixed together by welding.

[0041] The spring stabilizer consists of a sleeve, an inner shaft, a spring, and a bellows. One end of the sleeve is closed, and the other end is open. The spring is placed inside the sleeve, and the inner shaft is inserted from the open end of the sleeve, supporting the spring, thus forming the spring stabilizer. The two ends of the spring stabilizer, namely the ends of the sleeve and the inner shaft, are U-shaped, forming a U-groove. A bellows is fitted over the outside of the sleeve.

[0042] Ribs are provided on the inner side of the side beam, and spring stabilizers are horizontally installed between the side beams, with U-shaped grooves at both ends engaging with the protruding ribs.

[0043] The top of the side beams bends inwards and further bends into a hook shape at the top. Thus, a pair of side beams and a pair of corrugated boards form a U-shaped cavity with an open top and a narrowing opening. Elastic filler is placed inside this U-shaped cavity, embedding a spring stabilizer.

[0044] Preferably, the elastic filler has the following properties: tensile strength ≥ 5 MPa, elongation at break ≥ 500%, and hardness ≥ 20 IRHD. The measurement method is in accordance with GB / T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber.

[0045] Preferably, the elastic filler can be prepared by mixing modified rubber powder made from recycled waste rubber of rubber bearings, composite bio-based filler, plant asphalt and polyurethane material. The mass ratio of polyurethane material, modified rubber powder, composite bio-based filler and plant asphalt is (70-100):(5-35):(5-40):(5-20).

[0046] The modified rubber powder is prepared by mixing base rubber powder provided by waste rubber with plant asphalt in a percentage ratio of (60-100):(1-40) and treating it at 150-300℃ for 0.1-3h.

[0047] Composite bio-based fillers, plant-based asphalt, and polyurethane materials can be purchased commercially as needed, as long as their performance meets the requirements.

[0048] When using,

[0049] The seamless expansion joint of the present invention is placed into the reserved groove 10, and the anchor ring 2 is welded to the pre-embedded steel bar 9 to anchor the expansion joint into the reserved groove 10. Concrete 11 is filled into the anchoring area and cured.

[0050] After the concrete 11 in the anchorage zone has been cured, the elastic filler is poured into the U-shaped cavity formed by the side beams 3 and the rubbing board 7 on both sides, thus completing the installation of the entire expansion joint.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A seamless bio-based composite elastomeric stretch device, characterized in that, Includes frame components, spring stabilizers, and elastic filler; The skeleton assembly includes a pair of side beams (3), which are supported and fixed longitudinally by several anchor plates (1) placed on their outer sides; cross-joint curve plates (5) are transversely arranged on the inner side of the side beams and are staggered between the side beams. The spring stabilizer (6) includes a sleeve (61), an inner shaft (62), and a spring (63); the inner shaft is movably placed inside the sleeve and abuts against the spring inside the sleeve; the spring stabilizer is horizontally placed between the side beams, and the ends of the sleeve and the inner shaft abut against the side beams respectively. The elastic filler is filled into the U-shaped cavity formed by the side beam (3) and the cross-slit curve plate (5), and the spring stabilizer is embedded therein.

2. The retractor device of claim 1, wherein, An anchor ring (2) is provided at the bottom of the anchor plate.

3. The retractor device of claim 1, wherein, The spring stabilizer is fitted with a bellows (65).

4. The retractor of claim 1, wherein, At the top of the cross-joint curved plate (5), the inner side of the side beam is provided with a corrugated plate (7).

5. The retractor of claim 1, wherein, The inner side of the side beam (3) is provided with ribs (8), which match the U-shaped grooves (64) provided at the ends of the sleeve and the inner shaft.

6. The retractor of claim 1, wherein, The side of the anchor plate (1) near the side beam (3) is L-shaped.

7. The retractor of claim 1, wherein, The top of the side beam (3) is bent inward to form an L-shaped hook.

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