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CN-224213118-U - Heavy-load high-fatigue-toughness spherical steel support

CN224213118UCN 224213118 UCN224213118 UCN 224213118UCN-224213118-U

Abstract

The utility model discloses a heavy-duty high-fatigue-toughness spherical steel support, which comprises a support body and a dustproof device, wherein the support body is used for being installed between a bridge deck and a filler stone, the dustproof device is installed on the side face of the support body and is used for preventing dust and sundries from entering the support body, the dustproof device comprises a U-shaped buckle, a clamping plate and dustproof cloth, the U-shaped buckle is installed on the side face of the support body, the clamping plate is arranged in the U-shaped buckle, the dustproof cloth is installed on the clamping plate, and the dustproof cloth is used for shielding the area of the support body after penetrating through the U-shaped buckle. The utility model aims to solve the problems that the dust cover of the support in the prior art is difficult to assemble and disassemble and is not beneficial to daily maintenance, and meanwhile, the support body made of low alloy cast steel solves the problem that the traditional support is easy to crack due to fatigue, and the service life of the support body is longer and more fatigue-resistant through the special modified planar wear-resistant plate and the spherical wear-resistant plate made of polytetrafluoroethylene materials.

Inventors

  • CUI BIN
  • WU DATONG
  • ZHU MIN
  • LI LU
  • WANG SONG
  • YU SHURONG
  • SHAO QIHUI
  • WU TONG
  • ZHANG CHUN

Assignees

  • 中铁四局集团有限公司
  • 成都市大通路桥机械有限公司

Dates

Publication Date
20260508
Application Date
20250409

Claims (10)

  1. 1. A heavy-duty high fatigue toughness spherical steel support is characterized in that, Comprising the following steps: the support body is used for being installed between a bridge deck and a filler stone and is made of low-alloy cast steel; the dustproof device is arranged on the side surface of the support body and is used for preventing dust and sundries from entering the support body; Wherein, dust keeper includes: The U-shaped buckle (15) is arranged on the side face of the support body; the clamping plate (14) is arranged inside the U-shaped buckle (15); the dustproof cloth (16), dustproof cloth (16) are installed on cardboard (14), and dustproof cloth (16) are used for sheltering from the region of support body after passing U type buckle (15).
  2. 2. The heavy-duty high-fatigue-toughness spherical steel support according to claim 1, wherein the support body comprises an upper support plate (1), a lower support plate (8) and a spherical crown lining plate (5), the upper support plate (1) is used for being connected with a bridge deck, the lower support plate (8) is used for being connected with a filler stone, the spherical crown lining plate (5) is movably arranged between the upper support plate (1) and the lower support plate (8), the U-shaped buckle (15) is arranged on the upper support plate (1) through a connecting bolt (17), and the dustproof cloth (16) is used for covering the areas of the upper support plate (1), the lower support plate (8) and the spherical crown lining plate (5).
  3. 3. The heavy-duty high fatigue toughness spherical steel support according to claim 2, wherein the upper support plate (1) is connected with a bridge deck through a beam bottom embedded steel plate (13).
  4. 4. A heavy-duty high fatigue toughness spherical steel support according to claim 3, wherein the spherical crown liner plate (5) is provided with a planar wear-resistant plate (4), the bottom of the upper support plate (1) is provided with a planar stainless steel plate (2), and the planar wear-resistant plate (4) is used for being in contact with the planar stainless steel plate (2).
  5. 5. The heavy-duty high fatigue toughness spherical steel support according to claim 4, wherein a spherical stainless steel plate (6) is arranged at the bottom of the spherical crown liner plate (5), a spherical wear plate (7) is arranged on the spherical surface of the lower support plate (8), the spherical wear plate (7) is used for being in contact with the spherical stainless steel plate (6), and the plane wear plate (4) and the spherical wear plate (7) are made of polytetrafluoroethylene materials.
  6. 6. The heavy-duty high-fatigue-toughness spherical steel support saddle according to claim 2, wherein a stainless steel bar (9) and a wear-resistant bar (10) are arranged between the upper support saddle plate (1) and the lower support saddle plate (8), the stainless steel bar (9) is arranged on the upper support saddle plate (1), and the wear-resistant bar (10) is arranged on the lower support saddle plate (8).
  7. 7. The heavy-duty high fatigue toughness spherical steel support according to claim 4, wherein the spherical crown liner plate (5) is provided with a sealing groove, a sealing ring (3) is arranged in the sealing groove, and the sealing ring (3) is used for being in contact with the plane wear-resisting plate (4).
  8. 8. A heavy-duty high fatigue toughness spherical steel support according to claim 2, wherein the lower support plate (8) is connected with the bolster through an anchor assembly.
  9. 9. The heavy-duty high fatigue toughness spherical steel support according to claim 8, wherein the anchoring assembly comprises an anchoring sleeve (11) and an anchoring bolt (12), the anchoring sleeve (11) is used for being installed inside a filler stone, and the anchoring bolt (12) is used for being in threaded connection with the anchoring sleeve (11) after penetrating through the lower support plate (8).
  10. 10. The heavy-duty high fatigue toughness spherical steel support according to claim 9, wherein the lower support plate (8) is provided with a through hole, and the anchoring bolt (12) is in threaded fit with the anchoring sleeve (11) after passing through the through hole.

Description

Heavy-load high-fatigue-toughness spherical steel support Technical Field The utility model relates to the technical field of supports, in particular to a heavy-load high-fatigue-toughness spherical steel support. Background The support is a key component for connecting the structure and the foundation, and plays roles in transferring load, adapting to displacement and buffering deformation so as to ensure the stability and the safety of the structure. The working principle of the hydraulic support mainly depends on reasonable mechanical design, so that the hydraulic support can adapt to horizontal displacement and rotational deformation while bearing vertical load, and further, the additional stress in the structure is reduced. Different types of supports realize the control of deformation in different directions through specific structural forms and mechanical characteristics, for example, a fixed support mainly bears vertical and horizontal forces, and a movable support allows displacement or rotation angle in a certain range so as to adapt to temperature change, earthquake action and other external force influences. With the development of engineering technology, the support is continuously optimized in bearing capacity, durability and adaptability, and the performance is improved through accurate calculation and advanced manufacturing process, so that the support plays an important role in bridges, buildings and special structures, and reliable stress support is provided for engineering. The ball-shaped steel support is a high-performance structural member capable of realizing multidirectional rotation, and is widely applied to bridges and large-scale buildings to adapt to complex stress and deformation requirements. The working principle of the device depends on a spherical force transmission mode, vertical load is effectively transmitted through spherical contact, and meanwhile, the structure is allowed to rotate at a certain angle in the horizontal and vertical directions, so that constraint force and internal stress concentration are reduced. Along with the expansion of bridge and construction engineering scale, the traditional support has limitations in bearing capacity, durability and adaptability, and the technology of spherical steel supports is promoted to be continuously developed. The modern spherical steel support adopts an advanced calculation and analysis method to optimize the stress design, so that the requirements of large span, large displacement and complex working conditions can be met, and meanwhile, the bearing capacity and long-term stability are improved by combining a high-precision manufacturing process. Nowadays, the support is an important component in high-standard engineering, and provides key technical support for improving the safety and durability of the structure. Firstly, the existing ball-shaped steel support has limited type of bearing load and insufficient strength, and is difficult to meet the high-strength use requirement of a heavy-load bridge in long-term operation. The existing support steel structure generally adopts ZG270-500 cast steel material, the mechanical property of the material is relatively low, particularly in the long-term operation process of a bridge, the strong dynamic load generated by the repeated passing of a train can cause continuous impact on the support, so that the support is easy to generate fatigue damage under the action of high-frequency vibration and alternating load, the performance of the support is degraded, and the structural failure can be finally caused. Meanwhile, as the impact performance of the material is common, the material is difficult to bear the high impact force test in the heavy-load bridge environment, has poor toughness, and is easy to crack or even break when bearing the impact of larger stress. In addition, existing standoff designs fail to adequately address stress concentration problems, do not optimize stress dispersion in areas of stress concentration, and fatigue failure typically begins in localized areas of higher stress or strain, eventually leading to standoff failure at these weak locations after progressive accumulation of damage. Secondly, the existing saddle high polymer material sliding plate usually adopts Polytetrafluoroethylene (PTFE), modified polytetrafluoroethylene (M-PTFE) or modified ultra-high molecular weight polyethylene (M-UHMWPE), which have the following problems: 1) The dependence on the silicone grease is strong, the silicone grease can be extruded in the motion of the support, the silicone grease is exhausted and difficult to supplement 3-5 years after operation, the friction coefficient is continuously increased, and the abrasion is accelerated. 2) The slide between the support and the stainless steel plate becomes thinner, often accompanied by extrusion of the tetrafluoro slide (white film-like substance), even the slide comes off, and is extruded out of the support. 3) The slid