阅读说明：本技术 一种剪力棒、剪力铰及剪力铰安装结构 (Shear bar, shear hinge and shear hinge mounting structure ) 是由 欧阳斌 严卫民 孙照亮 刘韦 邓娇 颜湘 穆忠鑫 王丹 龙辉 于 2021-09-22 设计创作，主要内容包括：本发明属于剪力铰装置领域,具体是涉及到一种剪力棒、剪力铰及剪力铰安装结构,包括棒体,所述棒体内中空设置有空腔,所述空腔内设置有阻尼颗粒,本发明将剪力棒内设置空腔,并设置阻尼颗粒,在剪力棒所连接的两块待连接板遇到冲击载荷或者振动时,可通过激发阻尼颗粒在腔体内振动而吸收和损耗振动能量,在一定程度上减少待连接板的振动,进而提供一定降噪效果,本发明相对于常规剪力棒而言,具有了减振降噪的效果,减少连接的螺栓组件的振动,进而增加待连接板体的连接稳定可靠性,而相对于设置弹性垫片以获取减振降噪效果的方式而言,本发明不会出现由于弹性垫片的毁损、失效等原因导致两块待连接板不稳定松动的情况,同时兼顾了稳定性。(The invention belongs to the field of shear hinge devices, and particularly relates to a shear rod, a shear hinge and a shear hinge mounting structure, which comprise a rod body, wherein a cavity is arranged in the rod body in a hollow manner, damping particles are arranged in the cavity, the shear rod is provided with the cavity, and the damping particles are arranged in the shear rod, so that when two plates to be connected, which are connected with the shear rod, encounter impact load or vibration, the damping particles can be excited to vibrate in the cavity to absorb and lose vibration energy, the vibration of the plates to be connected is reduced to a certain extent, and a certain noise reduction effect is further provided The two unstable not hard up circumstances of treating the connecting plate of reasons such as inefficacy have been compromise simultaneously.)

1. The shear rod is characterized by comprising a rod body, wherein a cavity is arranged in the rod body in a hollow mode, and damping particles (17) are arranged in the cavity.

2. A shear bar according to claim 1, wherein a wear sleeve (16) is provided within the cavity, and the damping particles (17) are provided within the wear sleeve (16).

3. A shear bar according to claim 1 wherein the bar body is of square configuration.

4. A shear bar as in claim 3, wherein said bar body is provided on at least one side with a bearing plate (14), said bearing plate (14) having mounting portions (141) extending from the sides of the square configuration, said mounting portions (141) being provided with mounting holes (142).

5. A shear bar according to claim 4, wherein the working side of the carrier plate (14) is planar or curved.

6. A shear bar according to claim 4, wherein the mounting portion (141) is provided with a reinforcement (18) for connection to another part of the bar body.

7. A shear bar according to any one of claims 1 to 6, wherein the damping particles (17) are made of one or more of iron, lead, barite, aluminium, magnesium, and polymer materials, and the damping particles (17) are spherical and have a diameter in the range of 0.5-5 mm.

8. A shear bar according to any one of claims 1 to 6, wherein the damping particles (17) are filled in the cavity at a rate of between 50% and 85%.

9. A shear hinge is characterized by comprising two oppositely arranged shear bar mounting pieces (2), wherein openings are formed in one sides, opposite to the two shear bar mounting pieces (2), of the two shear bar mounting pieces and one side, away from a working surface, of the two shear bar mounting pieces, and the shear bars (1) are arranged in the two shear bar mounting pieces (2) and are as defined in any one of claims 1 to 8.

10. A shear hinge mounting structure is characterized by comprising at least two to-be-connected plates and at least two shear hinges according to claim 9, wherein two shear hinge mounting grooves (81) are respectively formed in two ends of one side, opposite to each other, of each to-be-connected plate, two shear rod mounting pieces (2) provided with the shear hinges are pre-buried in the two adjacent shear hinge mounting grooves (81), and the shear rods (1) are detachably arranged in the two shear rod mounting pieces (2).

Technical Field

The invention belongs to the field of shear hinge devices, and particularly relates to a shear bar, a shear hinge and a shear hinge mounting structure.

Background

The rail transit construction exists in urban areas and other areas requiring vibration reduction in a large number, and the steel spring floating slab vibration reduction ballast bed system realizes vibration reduction by supporting a ballast bed through a steel spring vibration isolator, and is widely adopted at present due to excellent vibration reduction performance. The prefabricated floating plate in the steel spring floating plate system is generally 3.6-6m long and the cast-in-situ floating plate is generally 25m long due to the limitation of lifting and transportation. The floating slab track beds are structurally independent during construction, and must be connected through a shear hinge during use. When the train passes through the floating slab track bed, vertical displacement between the track beds is transmitted through the shear hinges, and corresponding load is borne simultaneously, so that the height change of the track is stable, the displacement mutation between the floating slab track beds is reduced, and the driving safety and the riding comfort are ensured. Especially, the length of the prefabricated floating plate is shortened, so that the vibration reduction performance and the driving stability of the floating plate system are reduced, and therefore, the prefabricated floating plate connecting device becomes more important and provides higher requirements for the shear hinge.

In the curve section, the end surfaces between two adjacent floating plates are not parallel, so that the shear hinges of the floating plates need to consider not only the vertical impact load and the bending moment, but also the transverse load and the bending moment of the curve section so as to adapt to the bearing requirement of the curve section. In addition, the existing shear hinges only can provide a connecting effect, and can vibrate together with a floating plate under the condition of encountering impact load to generate noise, the application number is 202022264647.9, the name of the prefabricated floating plate assembly and the side-mounted connecting structure of the prefabricated floating plate is that the mass of the prefabricated floating plate is small, and the vertical displacement of a track is possibly overlarge, so that the vibration damping effect of the floating plate needs to be improved.

Disclosure of Invention

The invention aims to provide a shear bar, a shear hinge and a shear hinge mounting structure which can reduce vibration and reduce noise while ensuring the connection effect.

The hollow damping rod comprises a rod body, wherein a hollow cavity is arranged in the rod body, and damping particles are arranged in the hollow cavity.

Furthermore, a wear-resistant sleeve is arranged in the cavity, and the damping shell is arranged in the wear-resistant sleeve.

Further, the rod body is of a square structure.

Furthermore, at least one side of the rod body is a bearing plate, two sides of the bearing plate extend out of the square structure to be provided with installation parts, and installation holes are formed in the installation parts.

Furthermore, the working side of the bearing plate is a plane or an arc.

Furthermore, the mounting part is provided with a reinforcing rib connected with other parts of the rod body.

Furthermore, the damping particles are made of one or more of iron, lead, barite, aluminum, magnesium and high polymer materials, are spherical and have a diameter ranging from 0.5 mm to 5 mm.

Furthermore, the filling rate of the damping particles in the cavity is between 50 and 85 percent.

The invention also provides a shear hinge which comprises two shear bar mounting pieces which are arranged oppositely, wherein openings are arranged on one sides, opposite to the working face, of the two shear bar mounting pieces and one sides, away from the working face, of the two shear bar mounting pieces, and the shear bars are arranged in the two shear bar mounting pieces.

The invention also provides a shear hinge mounting structure which comprises at least two floating plates and at least two shear hinges, wherein two shear hinge mounting grooves are respectively formed in two ends of one side, opposite to each other, of each floating plate, two shear bar mounting pieces of the shear hinges are pre-embedded in the two adjacent shear hinge mounting grooves, and the shear bars are detachably arranged in the two shear bar mounting pieces.

The shear bar has the beneficial effects that the cavity is arranged in the shear bar, the damping particles are arranged in the cavity, and when two plates to be connected, which are connected by the shear bar, encounter impact load or vibration, the damping particles can be excited to vibrate in the cavity to absorb and lose the vibration energy, so that the vibration of the plates to be connected is reduced to a certain extent, and a certain noise reduction effect is further provided. Compared with the conventional shear bar, the vibration-damping and noise-reducing connecting rod has the effects of vibration damping and noise reduction, reduces the vibration of the connected bolt assemblies, further increases the stability and reliability of the connection of the plates to be connected, and compared with the mode of arranging the elastic gasket to obtain the vibration-damping and noise-reducing effect, the vibration-damping and noise-reducing connecting rod does not have the condition that two plates to be connected are unstable and loose due to the damage, failure and the like of the elastic gasket, and simultaneously has the stability.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a shear hinge of the present invention;

FIG. 2 is a right side sectional view of FIG. 1;

FIG. 3 is a schematic view of the shear bar portion of FIG. 2;

FIG. 4 is a schematic top view of the installation of the shear hinge of FIG. 1;

FIG. 5 is a side view of the shear hinge of FIG. 1 installed;

FIG. 6 is a cross-sectional view of one embodiment of a shear bar;

FIG. 7 is a top view of one embodiment of a shear bar;

FIG. 8 is a front view of a shear bar mount;

FIG. 9 is a top view of a shear bar mount;

FIG. 10 is a schematic structural view of another embodiment of a shear hinge of the present invention;

FIG. 11 is a side view of the shear hinge of FIG. 10 installed;

FIG. 12 is a schematic view of another installation mode of the reinforcing ribs in the shear bar of the invention.

In the figure, 1-shear bar; 11-an upper transverse plate; 12-a front panel; 13-a lower transverse plate; 14-a carrier plate; 141-a mounting portion; 142-mounting holes; 15-side plate; 16-a wear-resistant sleeve; 17-damping particles; 18-reinforcing ribs; 2-a shear bar mounting; 3-an internal threaded sleeve; 4, connecting a first plate; 5, connecting a second plate; 6-bolt; 7-a gasket; 8-floating plate; 81-shear hinge mounting groove.

Detailed Description

As shown in fig. 1 to 12, the shear rod provided by the invention comprises a rod body, wherein a cavity is arranged in the rod body, and damping particles 17 are arranged in the cavity.

According to the invention, the cavity is arranged in the shear bar, the damping particles 17 are arranged, and when two plates to be connected with the shear bar are subjected to impact load or vibration, the damping particles 17 can be excited to vibrate in the cavity to absorb and lose the vibration energy, so that the vibration of the plates to be connected is reduced to a certain extent, and a certain noise reduction effect is further provided. Compared with the conventional shear bar, the shear bar reduces the vibration of the connected bolt assemblies, so that the connection stability and reliability of the plate bodies to be connected are improved, and compared with the mode of arranging the elastic gasket to obtain the vibration reduction and noise reduction effect, the shear bar does not have the condition that two plates to be connected are unstable and loose due to the damage, failure and the like of the elastic gasket, and simultaneously takes the stability into consideration.

The cavity is internally provided with a wear-resistant sleeve 16, the damping particles 17 are arranged in the wear-resistant sleeve 16, specifically, the wear-resistant sleeve 16 can be formed by surrounding and combining wear-resistant plates which are arranged on the inner wall of the cavity in an attaching mode, and can also be made in advance, the damping particles 17 are arranged in the cavity after being arranged in the wear-resistant sleeve 16, the wear-resistant sleeve 16 is arranged on the inner wall of the cavity, the damping particles 17 are prevented from wearing the shear rod during vibration, the structural strength of the shear rod is reduced, and the service life of the shear rod is prolonged.

The bar body is of a square structure and comprises a bearing plate 14 mainly used for bearing shearing force, two side plates 15, an upper transverse plate 11 and a lower transverse plate 13 which are vertically arranged on the bearing plate 14, and a front panel 12 arranged corresponding to the bearing plate 14, six panels enclose to form a bar body with a square structure, and the inner part is directly formed with a cavity for installing the damping particles 17. in this embodiment, the rod body is of a square structure, the bearing plate 14 mainly bears the stress of shearing resistance and bending resistance, and the bearing plate 14 is directly or indirectly fixedly connected with the bearing plate 14 by additionally arranging other five plates, the cross-sectional dimension is enlarged without increasing too much weight and cost, which helps to improve the shear resistance and bending resistance of the bearing plate 14, meanwhile, an installation cavity is provided for the damping particles 17, in the embodiment, the wear-resistant sleeve 16 is integrally square and is formed by enclosing six wear-resistant plates corresponding to the square cavity.

At least one side of the rod body is provided with a bearing plate 14, the thickness of the bearing plate 14 is larger than that of the other five plates, two sides of the bearing plate 14 extend out of the square structure to form mounting parts 141, the mounting parts are used for mounting the shear rod 1 on the shear rod mounting part 2, mounting holes 142 are formed in the mounting parts 141, as shown in fig. 7 and 12, the mounting holes 142 on at least one side can be arranged to be waist-shaped holes, the connection difficulty of the bolts 6 is simplified, and meanwhile the precision requirement of the shear rod mounting part 2 is lowered.

As shown in fig. 1-7, the working side of the bearing plate 14 is a plane, in this embodiment, the shear rod 1 is simple to produce and set, the material is less, and the cost is low, as shown in fig. 8-12, the working side of the bearing plate 14 is an arc-shaped surface, in this embodiment, the shear rod 1 has stronger shear resistance, and is convenient and fast to install, and stable and reliable to connect after installation.

The installation part 141 is provided with the reinforcing ribs 18 for connecting other parts of the bar body, the reinforcing ribs 18 can be arranged on two sides of the installation part 141, as shown in fig. 12, the reinforcing ribs 18 can also be arranged in the middle and connected with the two side plates 15, and by arranging the reinforcing ribs 18, part of shearing deformation force can be transmitted to the side plates 15 to bear, so that the overall bearing force of the shear bar 1 is improved, and the structural stability and reliability are improved.

The production method of the shear bar comprises the following steps: welding the two side plates 15, the lower transverse plate 13 and the front panel 12; damping particles 17 are filled into the wear-resistant sleeve 16, and the filling rate is 50-85%; and (3) putting the wear-resistant sleeve 16 with the damping particles 17 in the cavity, and finally completing the assembly welding of the upper transverse plate 11.

The damping particles 17 are made of one or more of iron, lead, barite, aluminum, magnesium and high polymer materials, and the damping particles 17 are spherical and have diameters ranging from 0.5 mm to 5 mm. The filling rate of the damping particles 17 in the cavity is 50-85%, so that the energy absorption and vibration reduction effects of the damping particles 17 are ensured.

The invention also provides a shear hinge which comprises two shear bar mounting pieces 2 which are oppositely arranged, wherein openings are arranged on one sides, opposite to and far away from the working surface, of the two shear bar mounting pieces 2, and shear bars 1 arranged in the two shear bar mounting pieces 2, specifically, as shown in the figures 8-9, the shear bar mounting pieces 2 preferably adopt square structures with two open sides, through holes corresponding to the mounting holes 142 are arranged on a bottom plate of the square structures, an internal thread sleeve 3 is fixedly arranged below the through holes, and a first connecting plate 4 and a second connecting plate 5 are arranged on the outer side wall of the internal thread sleeve 3, wherein the first connecting plate 4, the second connecting plate 5, the internal thread sleeve 3 and the shear bar mounting pieces 2 can be integrally arranged on plate bodies to be connected in a pre-buried manner, for example, the internal thread sleeve 3 and the two floating plates 8 to be connected are pre-buried, and in addition, when the floating plates 8 are poured, the shear bar mounting pieces 2 and the internal thread sleeve 3 are arranged on the plate bodies to be connected in a pre-buried manner, The assembly of connecting plate 4 and connecting plate two 5 is poured as an organic wholely with floating slab 8, two connecting plates welding are on floating slab 8 steel reinforcement frame, further increase of strength, improve the stable in structure reliability of shear force stick installed part 2, simplify the on-the-spot installation degree of difficulty and improve work efficiency, in addition, shear force stick 1 passes the mounting hole at 14 both ends of loading board through bolt 6 and cooperates with internal thread sleeve 3, and then fix a shear force stick 1 in two shear force stick installed parts 2 that correspond, realize two floating slab 8's connection.

The shear hinge provided by the invention is convenient to replace and easy to install, the shear bar installation part 2 and the floating slab 8 are cast into a whole without an additional fixing device, and the concrete structure of the floating slab 8 is prevented from being damaged at the fixed connection position. The shear rod 1 and the shear rod mounting piece 2 are connected through the bolt 6 and are convenient to detach, the shear force transmitted by the shear rod 1 can be jointly borne by the inner bolt 6 and the shear rod mounting piece 2, the anti-shearing capacity is improved, in addition, the bolt 6 is further provided with the gasket 7 at the matching part with the mounting hole 142, the bolt 6 is prevented from loosening due to vibration, the anti-fatigue capacity of the shear hinge is improved, the practicability is high, and the service life of the whole shear hinge is prolonged.

The invention also provides a shear hinge mounting structure, which comprises at least two to-be-connected plates and at least two shear hinges, wherein two shear hinge mounting grooves 81 are respectively formed in two ends of one opposite side of the two to-be-connected plates, taking the to-be-connected plates as floating plates 8 as an example, as shown in fig. 4, 5 and 11, a shear hinge mounting groove 81 for arranging the shear hinge can be further formed in the middle of one opposite side of each of the two floating plates 8 for improving the connection strength, two shear rod mounting pieces 2 provided with the shear hinges are pre-embedded in the two adjacent shear hinge mounting grooves 81, the shear rods 1 are detachably arranged in the two shear rod mounting pieces 2, preferably, the shear hinges are arranged in the middle of the floating plates 8, and after the installation is finished, the state of the shear rods can be conveniently observed and maintained and replaced in the later period.

The shear hinge mounting method comprises the following steps:

s1, mounting the assembly of the shear bar mounting piece 2, the internal thread sleeve 3, the first connecting plate 4 and the second connecting plate 5 at preset positions, and welding the two connecting plates on the steel reinforcement framework of the floating plate 8;

s2, casting the floating slab 8, and casting the shear bar mounting piece 2, the internal thread sleeve 3, the first connecting plate 4, the second connecting plate 5 and the floating slab 8 into a whole;

s3, the shear bar 1 is embedded into the two adjacent shear bar mounting pieces 2, and the shear bar 1, the shear bar mounting pieces 2 and the internal thread sleeve 3 are fixed through the bolts 6 to complete mounting.