CN209958216U - A bridge shock absorbing base - Google Patents

A bridge shock absorbing base Download PDF

Info

Publication number
CN209958216U
CN209958216U CN201920620188.8U CN201920620188U CN209958216U CN 209958216 U CN209958216 U CN 209958216U CN 201920620188 U CN201920620188 U CN 201920620188U CN 209958216 U CN209958216 U CN 209958216U
Authority
CN
China
Prior art keywords
sides
bridge
plate
fixed
movable rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920620188.8U
Other languages
Chinese (zh)
Inventor
陈官剑
尤青松
郑山鹰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Xinda Yaluqiao Technology Co Ltd
Original Assignee
Wuhan Xinda Yaluqiao Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Xinda Yaluqiao Technology Co Ltd filed Critical Wuhan Xinda Yaluqiao Technology Co Ltd
Priority to CN201920620188.8U priority Critical patent/CN209958216U/en
Application granted granted Critical
Publication of CN209958216U publication Critical patent/CN209958216U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Bridges Or Land Bridges (AREA)

Abstract

The utility model discloses a bridge vibration damping mount, including roof and bottom plate, the both sides of roof bottom and the both sides at bottom plate top all are connected with the fixed block to the relative both sides of fixed block swing joint respectively have first movable rod and second movable rod, the both sides of roof bottom and the bilateral longitudinal symmetry at bottom plate top are fixed with the spliced pole, and the equal fixedly connected with connecting block in the both ends that the spliced pole is relative, the first spring of fixedly connected with between the relative one side of connecting block, the utility model relates to a bridge base technical field. This bridge damping mount, through the both sides of roof bottom and the both sides at bottom plate top swing joint respectively have first movable rod and second movable rod, the elasticity is better, and the shock attenuation effect is better, has cushioned the vibrations of vehicle when the vehicle passes through the bridge and can be to the impact that the pontic produced, through the first spring of fixedly connected with between the relative one side of connecting block, has greatly improved the shock attenuation effect of bridge, has prolonged the life of bridge.

Description

一种桥梁减震底座A bridge shock absorbing base

技术领域technical field

本实用新型涉及桥梁底座技术领域,具体为一种桥梁减震底座。The utility model relates to the technical field of bridge bases, in particular to a bridge shock absorption base.

背景技术Background technique

桥梁一般指架设在江河湖海上使车辆行人等能顺利通行的构筑物,为适应现代高速发展的交通行业,桥梁亦引申为跨越山涧、不良地质或满足其他交通需要而架设的使通行更加便捷的建筑物,桥梁一般由上部构造、下部结构、支座和附属构造物组成,支座为桥跨结构与桥墩或桥台的支承处所设置的传力装置,还要承受操作时的振动与地震载荷,它能将桥梁上部结构的反力和变形(位移和转角)可靠的传递给桥梁下部结构,从而使结构的实际受力情况与计算的理论图式相符合,而隔震技术作为一种能够改善结构抗震、降低地震危害性并且行之有效的技术,被广泛的应用于各个领域。Bridges generally refer to structures erected on rivers, lakes and seas to enable vehicles and pedestrians to pass smoothly. In order to adapt to the modern and fast-developing transportation industry, bridges are also extended to cross mountain streams, bad geology or to meet other traffic needs. The bridge is generally composed of the upper structure, the lower structure, the support and the auxiliary structure. The support is the force transmission device set at the support place of the bridge span structure and the bridge pier or abutment, and it also bears the vibration and seismic load during operation. It can reliably transmit the reaction force and deformation (displacement and rotation angle) of the upper structure of the bridge to the lower structure of the bridge, so that the actual stress of the structure is consistent with the calculated theoretical schema. Structural earthquake resistance, reducing earthquake hazard and effective technology are widely used in various fields.

而现有的桥梁支座多数使支座具有更坚固的防护措施,不具备减震性,在车辆通过桥梁时,车辆的震动,会对桥体产生冲击,在长期使用中较为笨重的车辆会加快桥梁的损耗,缩短桥梁的使用寿命。However, most of the existing bridge supports have stronger protective measures and do not have shock absorption. When the vehicle passes through the bridge, the vibration of the vehicle will have an impact on the bridge body. Accelerate the wear and tear of the bridge and shorten the service life of the bridge.

实用新型内容Utility model content

针对现有技术的不足,本实用新型提供了一种桥梁减震底座,解决了车辆的震动,会对桥体产生冲击,缩短桥梁使用寿命的问题。In view of the deficiencies of the prior art, the utility model provides a bridge shock absorption base, which solves the problem that the vibration of the vehicle will impact the bridge body and shorten the service life of the bridge.

为实现以上目的,本实用新型通过以下技术方案予以实现:一种桥梁减震底座,包括顶板和底板,所述顶板底部的两侧和底板顶部的两侧均连接有固定块,并且固定块相对两侧分别活动连接有第一活动杆和第二活动杆,所述顶板底部的两侧和底板顶部的两侧上下对称固定有连接柱,且连接柱相对的两端均固定连接有连接块,所述连接块相对的一侧之间固定连接有第一弹簧,且顶板的下表面固定有多根上固定柱,所述底板的下表面固定有多根下固定柱,所述上固定柱和下固定柱上下对称设置。In order to achieve the above purpose, the present utility model is achieved through the following technical solutions: a bridge shock absorption base, comprising a top plate and a bottom plate, both sides of the bottom of the top plate and both sides of the top of the bottom plate are connected with fixed blocks, and the fixed blocks are opposite to each other. The two sides are respectively movably connected with a first movable rod and a second movable rod, the two sides of the bottom of the top plate and the two sides of the top of the bottom plate are fixed with connecting columns symmetrically up and down, and the opposite ends of the connecting columns are fixedly connected with connecting blocks, A first spring is fixedly connected between the opposite sides of the connecting block, and a plurality of upper fixing columns are fixed on the lower surface of the top plate, and a plurality of lower fixing columns are fixed on the lower surface of the bottom plate. The fixed column is arranged symmetrically up and down.

优选的,所述第一活动杆通过连接件与第二活动杆铰接。Preferably, the first movable rod is hinged with the second movable rod through a connecting piece.

优选的,所述固定柱相对的一端均贯穿有外壳,且固定柱延伸至外壳内部的一端均固定有连接板,所述外壳固定在固定柱上。Preferably, the opposite end of the fixing column penetrates through the casing, and one end of the fixing column extending to the inside of the casing is fixed with a connecting plate, and the casing is fixed on the fixing column.

优选的,所述连接板相对的一侧均活动连接有滑杆,所述滑杆相对的一端均活动连接有活动板。Preferably, a sliding rod is movably connected to the opposite side of the connecting plate, and a movable plate is movably connected to the opposite end of the sliding rod.

优选的,所述外壳两侧均贯穿有连接杆,所述连接杆延伸至外壳内部的一端固定有圆弧板,两个圆弧板对称位于活动板左右两侧。Preferably, connecting rods penetrate through both sides of the casing, and a circular arc plate is fixed at one end of the connecting rod extending to the inside of the casing, and the two circular arc plates are symmetrically located on the left and right sides of the movable plate.

优选的,所述连接杆的表面且位于圆弧板的一侧与外壳内壁的一侧之间固定连接有第二弹簧。Preferably, a second spring is fixedly connected to the surface of the connecting rod and located between one side of the circular arc plate and one side of the inner wall of the housing.

有益效果beneficial effect

本实用新型提供了一种桥梁减震底座。具备以下有益效果:The utility model provides a shock-absorbing base for a bridge. Has the following beneficial effects:

(1)、该桥梁减震底座,通过固定柱相对的一端均贯穿有外壳,且固定柱延伸至外壳内部的一端均固定有连接板,外壳固定在固定柱上,连接板相对的一侧均活动连接有滑杆,滑杆相对的一端均活动连接有活动板,外壳两侧均贯穿有连接杆,连接杆延伸至外壳内部的一端固定有圆弧板,两个圆弧板对称位于活动板左右两侧,连接杆的表面且位于圆弧板的一侧与外壳内壁的一侧之间固定连接有第二弹簧,使桥梁底座达到减震效果同时保持桥梁稳定性,提高整体的可实施性和可行性,使其整体具备高效的抗震抗冲击性多重的减震装置,极大的提高了桥梁的减震效果,延长了桥梁的使用寿命。(1) The shock-absorbing base of the bridge has a casing through the opposite end of the fixed column, and the end of the fixed column extending to the inside of the casing is fixed with a connecting plate, the casing is fixed on the fixed column, and the opposite side of the connecting plate is A sliding rod is movably connected, the opposite end of the sliding rod is movably connected with a movable plate, both sides of the shell are pierced with connecting rods, and one end of the connecting rod extending to the inside of the shell is fixed with a circular arc plate, and the two circular arc plates are symmetrically located on the movable plate On the left and right sides, a second spring is fixedly connected between the surface of the connecting rod and the side of the arc plate and the side of the inner wall of the shell, so that the bridge base can achieve the shock absorption effect while maintaining the stability of the bridge and improving the overall practicability and feasibility, so that it has high-efficiency seismic and shock-resistant multiple shock-absorbing devices as a whole, which greatly improves the shock-absorbing effect of the bridge and prolongs the service life of the bridge.

(2)、该桥梁减震底座,通过顶板底部的两侧和底板顶部的两侧均连接有固定块,并且固定块相对两侧分别活动连接有第一活动杆和第二活动杆,伸缩性更加好,减震效果更好,缓冲了在车辆通过桥梁时车辆的震动会对桥体产生的冲击。(2) The bridge shock absorption base is connected with fixed blocks through both sides of the bottom of the top plate and both sides of the top of the bottom plate, and the first movable rod and the second movable rod are movably connected to the opposite sides of the fixed block respectively. Better, the shock absorption effect is better, buffering the impact of the vehicle's vibration on the bridge body when the vehicle passes the bridge.

(3)、该桥梁减震底座,通过顶板底部的两侧和底板顶部的两侧上下对称固定有连接柱,且连接柱相对的两端均固定连接有连接块,连接块相对的一侧之间固定连接有第一弹簧,极大的提高了桥梁的减震效果,延长了桥梁的使用寿命。(3) The bridge shock absorbing base is symmetrically fixed with connecting columns up and down through the two sides of the bottom of the top plate and the two sides of the top of the bottom plate, and the opposite ends of the connecting columns are fixedly connected with connecting blocks. There is a first spring in the fixed connection between the bridges, which greatly improves the shock absorption effect of the bridge and prolongs the service life of the bridge.

附图说明Description of drawings

图1为本实用新型结构示意图;Fig. 1 is the structural representation of the utility model;

图2为本实用新型图1中A处的局部放大图。FIG. 2 is a partial enlarged view of A in FIG. 1 of the present utility model.

图中:1顶板、2底板、3固定块、4第一活动杆、5第二活动杆、6连接柱、7连接块、8第一弹簧、9固定柱、10连接件、11外壳、12连接板、13滑杆、14活动板、15连接杆、16圆弧板、17第二弹簧。In the figure: 1 top plate, 2 bottom plate, 3 fixed block, 4 first movable rod, 5 second movable rod, 6 connecting column, 7 connecting block, 8 first spring, 9 fixed column, 10 connecting piece, 11 shell, 12 Connecting plate, 13 sliding rod, 14 movable plate, 15 connecting rod, 16 arc plate, 17 second spring.

具体实施方式Detailed ways

下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本实用新型一部分实施例,而不是全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

请参阅图1-2,本实用新型提供一种技术方案:一种桥梁减震底座,包括顶板1和底板2,顶板1底部的两侧和底板2顶部的两侧均连接有固定块3,并且固定块3相对两侧分别活动连接有第一活动杆4和第二活动杆5,第一活动杆4通过连接件10与第二活动杆5铰接,连接件10相对两侧的顶部与底部均固定连接有缓冲弹簧,缓冲弹簧远离连接件10的一端与连接块7的一侧固定连接,顶板1底部的两侧和底板2顶部的两侧上下对称固定有连接柱6,且连接柱6相对的两端均固定连接有连接块7,连接块7相对的一侧之间固定连接有第一弹簧8,且顶板1的下表面固定有多根上固定柱,底板2的下表面固定有多根下固定柱9,上固定柱和下固定柱9上下对称设置,固定柱9相对的一端均贯穿有外壳11,外壳11两侧均贯穿有连接杆15,连接杆15的表面且位于圆弧板16的一侧与外壳11内壁的一侧之间固定连接有第二弹簧17,连接杆15延伸至外壳11内部的一端固定有圆弧板16,两个圆弧板16对称位于活动板14左右两侧,且固定柱9延伸至外壳11内部的一端均固定有连接板12,外壳11固定在固定柱9上,连接板12相对的一侧均活动连接有滑杆13,滑杆13相对的一端均活动连接有活动板14。1-2, the present utility model provides a technical solution: a bridge shock absorption base, comprising a top plate 1 and a bottom plate 2, the two sides of the bottom of the top plate 1 and the two sides of the top of the bottom plate 2 are connected with fixing blocks 3, And the opposite sides of the fixed block 3 are respectively movably connected with a first movable rod 4 and a second movable rod 5, the first movable rod 4 is hinged with the second movable rod 5 through a connecting piece 10, and the top and bottom of the opposite sides of the connecting piece 10 are hinged. Both are fixedly connected with a buffer spring, and one end of the buffer spring away from the connector 10 is fixedly connected to one side of the connecting block 7, and the two sides of the bottom of the top plate 1 and the two sides of the top of the bottom plate 2 are symmetrically fixed with connecting columns 6 up and down, and the connecting columns 6 The opposite ends are fixedly connected with connecting blocks 7, and the first springs 8 are fixedly connected between the opposite sides of the connecting blocks 7, and the lower surface of the top plate 1 is fixed with a plurality of upper fixing columns, and the lower surface of the bottom plate 2 is fixed with a plurality of upper fixing columns. The bottom fixing column 9, the upper fixing column and the lower fixing column 9 are arranged symmetrically up and down, the opposite end of the fixing column 9 is penetrated by the housing 11, both sides of the housing 11 are penetrated with connecting rods 15, and the surface of the connecting rod 15 is located in a circular arc. A second spring 17 is fixedly connected between one side of the plate 16 and one side of the inner wall of the casing 11 , and a circular arc plate 16 is fixed at one end of the connecting rod 15 extending to the inside of the casing 11 , and the two circular arc plates 16 are symmetrically located on the movable plate 14 On the left and right sides, and one end of the fixed column 9 extending to the inside of the casing 11 is fixed with a connecting plate 12, the casing 11 is fixed on the fixed column 9, and the opposite side of the connecting plate 12 is movably connected with a sliding rod 13, and the sliding rod 13 is opposite to A movable plate 14 is movably connected to one end of each.

使用时,顶板1受到压力时,第一活动杆4与第二活动杆5会相对运动,连接柱6向下压时第一弹簧8进行回弹,滑杆13受到压力带动活动板14左右移动,第二弹簧17受力回弹,活动板14在圆弧板16之间进行移动保持其稳定性,这样就完成了对桥梁的减震。In use, when the top plate 1 is under pressure, the first movable rod 4 and the second movable rod 5 will move relative to each other. When the connecting column 6 is pressed down, the first spring 8 will rebound, and the sliding rod 13 will be under pressure to drive the movable plate 14 to move left and right. , the second spring 17 rebounds under force, and the movable plate 14 moves between the arc plates 16 to maintain its stability, thus completing the shock absorption of the bridge.

需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

尽管已经示出和描述了本实用新型的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本实用新型的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1.一种桥梁减震底座,包括顶板(1)和底板(2),其特征在于:所述顶板(1)底部的两侧和底板(2)顶部的两侧均连接有固定块(3),并且固定块(3)相对两侧分别活动连接有第一活动杆(4)和第二活动杆(5),所述顶板(1)底部的两侧和底板(2)顶部的两侧上下对称固定有连接柱(6),且连接柱(6)相对的两端均固定连接有连接块(7),所述连接块(7)相对的一侧之间固定连接有第一弹簧(8),且顶板(1)的下表面固定有多根上固定柱,所述底板(2)的下表面固定有多根下固定柱(9),所述上固定柱和下固定柱(9)上下对称设置。1. A bridge shock absorbing base, comprising a top plate (1) and a bottom plate (2), characterized in that: both sides of the bottom of the top plate (1) and both sides of the top of the bottom plate (2) are connected with a fixing block (3 ), and the opposite sides of the fixed block (3) are respectively movably connected with a first movable rod (4) and a second movable rod (5), the two sides of the bottom of the top plate (1) and the two sides of the top of the bottom plate (2) A connecting column (6) is fixed symmetrically up and down, and a connecting block (7) is fixedly connected to the opposite ends of the connecting column (6), and a first spring (7) is fixedly connected between the opposite sides of the connecting block (7). 8), and the lower surface of the top plate (1) is fixed with a plurality of upper fixing columns, the lower surface of the bottom plate (2) is fixed with a plurality of lower fixing columns (9), the upper fixing column and the lower fixing column (9) Symmetrical settings up and down. 2.根据权利要求1所述的一种桥梁减震底座,其特征在于:所述第一活动杆(4)通过连接件(10)与第二活动杆(5)铰接。2 . The bridge shock absorption base according to claim 1 , wherein the first movable rod ( 4 ) is hinged with the second movable rod ( 5 ) through a connecting piece ( 10 ). 3 . 3.根据权利要求1所述的一种桥梁减震底座,其特征在于:所述固定柱(9)相对的一端均贯穿有外壳(11),且固定柱(9)延伸至外壳(11)内部的一端均固定有连接板(12),所述外壳(11)固定在固定柱(9)上。3. A bridge shock absorbing base according to claim 1, characterized in that: the opposite ends of the fixing column (9) are penetrated by the casing (11), and the fixing column (9) extends to the casing (11) One end of the interior is fixed with a connecting plate (12), and the casing (11) is fixed on the fixing column (9). 4.根据权利要求3所述的一种桥梁减震底座,其特征在于:所述连接板(12)相对的一侧均活动连接有滑杆(13),所述滑杆(13)相对的一端均活动连接有活动板(14)。4. A bridge shock absorbing base according to claim 3, characterized in that: the opposite sides of the connecting plate (12) are movably connected with sliding rods (13), and the sliding rods (13) are opposite to each other. A movable plate (14) is movably connected to one end. 5.根据权利要求4所述的一种桥梁减震底座,其特征在于:所述外壳(11)两侧均贯穿有连接杆(15),所述连接杆(15)延伸至外壳(11)内部的一端固定有圆弧板(16),两个圆弧板(16)对称位于活动板(14)左右两侧。5. A bridge shock absorbing base according to claim 4, characterized in that: connecting rods (15) penetrate through both sides of the casing (11), and the connecting rods (15) extend to the casing (11) A circular arc plate (16) is fixed at one end of the inner part, and the two circular arc plates (16) are symmetrically located on the left and right sides of the movable plate (14). 6.根据权利要求5所述的一种桥梁减震底座,其特征在于:所述连接杆(15)的表面且位于圆弧板(16)的一侧与外壳(11)内壁的一侧之间固定连接有第二弹簧(17)。6. A bridge shock absorbing base according to claim 5, characterized in that: the surface of the connecting rod (15) is located between one side of the arc plate (16) and one side of the inner wall of the casing (11). A second spring (17) is fixedly connected therebetween.
CN201920620188.8U 2019-04-30 2019-04-30 A bridge shock absorbing base Expired - Fee Related CN209958216U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920620188.8U CN209958216U (en) 2019-04-30 2019-04-30 A bridge shock absorbing base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920620188.8U CN209958216U (en) 2019-04-30 2019-04-30 A bridge shock absorbing base

Publications (1)

Publication Number Publication Date
CN209958216U true CN209958216U (en) 2020-01-17

Family

ID=69244400

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920620188.8U Expired - Fee Related CN209958216U (en) 2019-04-30 2019-04-30 A bridge shock absorbing base

Country Status (1)

Country Link
CN (1) CN209958216U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111254818A (en) * 2020-01-21 2020-06-09 南阳理工学院 A bridge integral reinforcement device with shock-absorbing support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111254818A (en) * 2020-01-21 2020-06-09 南阳理工学院 A bridge integral reinforcement device with shock-absorbing support

Similar Documents

Publication Publication Date Title
CN208884340U (en) A kind of bridge earthquake resistance stabilising arrangement for civil engineering
CN206298980U (en) Shape memory alloy spring damper
CN209178797U (en) A kind of bridge earthquake resistance attachment device
CN111764267A (en) A rocking self-reset bearing
CN102322021A (en) Longspan Bridge is with damping steel case beam
CN110359365A (en) A kind of packaged type bridges shock-proof seat
CN103410238B (en) A kind of multidirectional friction tensile damping device
CN109555009B (en) A Support and Beam Body Seismic Isolation Structural System and Its Application
CN209958216U (en) A bridge shock absorbing base
CN205474809U (en) Shock-absorbing structure of bridge
CN206438390U (en) A kind of high-performance bridge aseismatic bearing
CN113006831B (en) A kind of miner's steel arched pressure buffer support for roadway and its realization method
CN211622078U (en) Beam column damping structure
CN110593088A (en) Public road bridge beam supports that shock absorption performance is good gives sound insulation
CN209941942U (en) Viscous damping device of damping structure
CN103243643A (en) Horizontal elastic damping device for bridge
CN108360372B (en) One kind having horizontal anisotropic rigidity and anti-impact characteristic isolation bridge device
CN207295417U (en) A kind of Bridge Pier antishock device
CN205663056U (en) Building shock -absorbing structure
CN205557312U (en) Bridge support that takes precautions against earthquakes
CN211079893U (en) A combined bridge shock absorption structure
CN211547292U (en) Bridge anti-seismic structure
CN115748432A (en) Reinforced bridge steel structure
CN102953322B (en) Novel bridge shock isolation and absorption soft steel damping device
CN214194106U (en) Highway bridge antidetonation telescoping device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200117