CN212316660U - Anti-seismic movable spherical support of bridge - Google Patents

Abstract

The embodiment of the application provides an antidetonation activity ball-type support of bridge, includes: the lower seat plate, the sliding seat plate assembly, the two limiting and adjusting devices and the anti-seismic device are arranged on the lower seat plate; the sliding seat plate assembly comprises an upper seat plate and a spherical crown which is arranged between the upper seat plate and a lower seat plate and is in sliding connection with the upper seat plate and the lower seat plate, and two limit adjusting devices are arranged on the upper seat plate or the lower seat plate and are positioned at two sides of the spherical crown along the longitudinal direction of the anti-seismic movable spherical support; the spacing adjusting devices can adjust the distance between the two spacing adjusting devices along the longitudinal direction of the anti-seismic movable spherical support so as to limit the maximum sliding distance of the upper seat plate relative to the lower seat plate along the longitudinal direction of the anti-seismic movable spherical support. The anti-seismic device is longitudinally arranged along the anti-seismic movable spherical support and comprises a cylinder barrel and a piston rod, one of the cylinder barrel and the piston rod is connected with the sliding seat plate assembly, and the other of the cylinder barrel and the piston rod is connected with the lower seat plate.

Description

Anti-seismic movable spherical support of bridge

Technical Field

The utility model relates to a bridge beam supports technical field, in particular to antidetonation activity ball-type support of bridge.

Background

Along with the construction of high-speed railway engineering in China, more and more bridges cross rivers, rivers and various roads, particularly in southern areas in China, roads and water systems are developed, and more medium-span and large-span continuous beam bridges are provided. For some high-speed railway long-span bridges, because the temperature span is large, after the ordinary longitudinal constraint system is adopted, a large number of steel rail expansion adjusters are also required to be arranged at the beam ends so as to reduce the relative displacement between the steel rails and the bridge.

The more rail expansion controllers that set up will influence the ride comfort of track structure and driving, and maintenance work load is big. Meanwhile, the rail expansion adjuster is usually required to be arranged on a straight line section, which not only brings great difficulty to route selection and bridge design of the high-speed railway, but also severely limits the span of the high-speed railway bridge.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the embodiments of the present application is to provide an anti-seismic movable spherical support for a bridge, so as to solve the problem in the related art that the installation of a large number of rail expansion and contraction adjusters may adversely affect the construction of a high-speed railway bridge.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

the embodiment of the application provides an antidetonation activity ball-type support of bridge, includes:

a lower seat plate;

the sliding seat plate assembly comprises an upper seat plate and a spherical crown, the spherical crown is arranged between the upper seat plate and the lower seat plate, one side of the spherical crown is in sliding connection with the upper seat plate, and one side of the spherical crown, which is far away from the upper seat plate, is in sliding connection with the lower seat plate;

the two limiting adjusting devices are arranged on the upper seat plate or the lower seat plate, and are positioned on two sides of the spherical crown along the longitudinal direction of the anti-seismic movable spherical support; the limiting adjusting devices can adjust the distance between the two limiting adjusting devices along the longitudinal direction of the anti-seismic movable spherical support so as to limit the maximum sliding distance of the upper seat plate relative to the lower seat plate along the longitudinal direction of the anti-seismic movable spherical support.

The anti-seismic device is longitudinally arranged along the anti-seismic movable spherical support and comprises a cylinder barrel and a piston rod, one of the cylinder barrel and the piston rod is connected with the sliding seat plate assembly, and the other of the cylinder barrel and the piston rod is connected with the lower seat plate.

Furthermore, the limiting and adjusting device comprises a limiting plate, a force transmission plate and an adjusting gasket;

the limiting plate is fixedly connected with the upper seat plate or the lower seat plate;

the force transmission plate is arranged on one side, close to the spherical crown, of the limiting plate and can move relative to the limiting plate along the longitudinal direction of the anti-seismic movable spherical support;

the adjusting gasket is selectively clamped between the limiting plate and the force transmission plate.

Furthermore, the limiting and adjusting device further comprises a first adjusting bolt and an adjusting nut, a first through hole is formed in the force transmission plate, and a second through hole is formed in the limiting plate;

the first adjusting bolt comprises a first rod part and a first head part arranged at one end of the first rod part, the first rod part penetrates through the first through hole and the second through hole, and the first head part is abutted to the dowel plate;

the adjusting gasket clamped between the limiting plate and the dowel plate penetrates through the first rod part;

the adjusting nut is arranged on one side, far away from the dowel plate, of the limiting plate and is in threaded connection with the first rod part.

Further, a locking groove is formed in the adjusting gasket, and one end of the locking groove extends to the edge of the adjusting gasket to form an opening at the edge of the adjusting gasket;

the first rod part is clamped into the locking groove through the opening, so that the adjusting gasket is arranged on the first rod part in a penetrating mode.

Furthermore, the number of the adjusting gaskets is multiple, and the thicknesses of at least two of the adjusting gaskets are different.

Further, the limiting adjusting device comprises a limiting plate, a second adjusting bolt and a plurality of adjusting blocks with different thicknesses;

the limiting plate is fixedly connected with the upper seat plate or the lower seat plate;

the second adjusting bolt comprises a second rod part and a second head part arranged at one end of the second rod part, the second rod part penetrates through the limiting plate and is in threaded connection with the limiting plate, and the second head part is positioned on one side, far away from the spherical crown, of the limiting plate;

one end of the second rod part far away from the second head part is selectively connected with one of the adjusting blocks in a threaded mode.

Further, the cylinder is connected with the upper seat plate.

Further, the sliding seat plate assembly also comprises a middle seat plate with a sliding groove;

the middle seat plate is arranged between the two limiting and adjusting devices and is in sliding connection with the lower seat plate, and the sliding groove is positioned on one side, far away from the lower seat plate, of the middle seat plate;

the spherical crown is arranged in the sliding groove and is in sliding connection with the middle seat plate;

one side of the upper seat plate, which is in sliding connection with the spherical crown, extends into the sliding groove;

the cylinder barrel is connected with the middle base plate.

Furthermore, the two limiting adjusting devices are arranged on the lower seat plate, and when the upper seat plate slides to a limit position relative to the lower seat plate along the longitudinal direction of the anti-seismic movable spherical support, the middle seat plate is abutted to the corresponding force transmission plate.

Furthermore, the number of the anti-seismic devices is two, and the two anti-seismic devices are located on two sides of the spherical crown along the transverse direction of the anti-seismic movable spherical support.

Further, the anti-vibration device may be a viscous damper or a velocity locker.

The embodiment of the application provides an antidetonation activity ball-type support, through set up spacing adjusting device and antidetonation device in antidetonation activity ball-type support, both can maintain the stability of bridge restraint system, can guarantee again that the girder can freely be out of shape under the temperature effect, can also possess good anti-seismic performance, makes this activity ball-type support can satisfy the sliding and spacing requirement of bridge construction under the condition that different temperature shrink creep from this. After the movable spherical support is arranged on the bridge, the number of the steel rail telescopic regulators can be reduced, so that the problem that the steel rail telescopic regulators with a large number of steel rails bring adverse effects to the construction of the high-speed railway bridge can be solved, the construction cost of the bridge is reduced, and simultaneously, the bridge design and construction difficulty is reduced.

Drawings

Fig. 1 is a schematic view of a connection relationship between an aseismic movable spherical bearing and a main beam and a bearing pad stone provided in an embodiment of the present application;

FIG. 2 is a semi-sectional view of the shock resistant live ball bearing shown in FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic view of the adjusting shim shown in FIG. 2;

FIG. 5 is a semi-sectional view of a second anti-seismic live ball bearing according to an embodiment of the present disclosure;

FIG. 6 is a half sectional view of a third anti-seismic movable ball bearing provided in accordance with an embodiment of the present disclosure;

fig. 7 is a half sectional view of a fourth anti-seismic movable ball-type seat according to the second embodiment of the present application.

Reference numerals:

an anti-seismic movable spherical support 100; a lower seat plate 110; a sliding seat plate assembly 120; an upper seat plate 121; a spherical cap 122; a catch plate 123; a sliding friction pair 124; a middle seat plate 125; a chute 125 a; a limit adjustment device 130; a stopper plate 131; a force transmission plate 132; a regulating washer 133; the locking groove 133 a; the opening 133 b; a first adjusting bolt 134; first head 1341; a first rod portion 1342; an adjusting nut 135; a second adjusting bolt 136; a second head 1361; second shaft 1362; an adjustment block 137; a cover plate 138; an anti-vibration device 140; a cylinder 141; a piston rod 142; a main beam 200; the support base stone 300.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

In the description of the present application, a "longitudinal" orientation or positional relationship is based on fig. 2 and 3, and a "lateral" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 3, it being understood that these orientation terms are merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present application.

Example one

Referring to fig. 1 to 3, a first anti-seismic movable ball-shaped support 100 is provided in the embodiment of the present application, where the first anti-seismic movable ball-shaped support 100 includes: lower seat plate 110, sliding seat plate assembly 120, limit adjustment device 130, and anti-vibration device 140. The sliding seat plate assembly 120 includes an upper seat plate 121 and a spherical cap 122, the spherical cap 122 is disposed between the upper seat plate 121 and the lower seat plate 110, one side of the spherical cap 122 is slidably connected to the upper seat plate 121, and one side of the spherical cap 122 away from the upper seat plate 121 is slidably connected to the lower seat plate 110. The number of the spacing adjusting means 130 is two, and the two spacing adjusting means 130 are provided on the lower seat plate 110. Two limit adjusters 130 are positioned on both sides of the spherical cap 122 in the longitudinal direction of the aseismic moving ball bearing 100. The spacing adjustment devices 130 can adjust the distance between the two spacing adjustment devices 130 along the longitudinal direction of the aseismic moving ball-type bearing 100 to limit the maximum distance that the upper seat plate 121 slides relative to the lower seat plate 110 along the longitudinal direction of the aseismic moving ball-type bearing 100. The anti-vibration device 140 is arranged along the longitudinal direction of the anti-vibration movable ball-type bearing 100, the anti-vibration device 140 comprises a cylinder 141 and a piston rod 142, one of the cylinder 141 and the piston rod 142 is connected with the sliding seat plate assembly 120, and the other of the cylinder 141 and the piston rod 142 is connected with the lower seat plate 110.

Specifically, the aseismatic movable ball bearing 100 of the present embodiment is mainly disposed between the girder 200 and the pier of the bridge, wherein the lower seat plate 110 is fixedly connected to the pier, and the upper seat plate 121 is fixedly connected to the girder 200, more specifically, the pier is generally provided with a bearing pad 300, and the lower seat plate 110 is generally fixed to the bearing pad 300 to be fixedly connected to the pier through the bearing pad 300. In practical application, the anti-seismic movable ball-shaped support 100 of the embodiment may be arranged only between the main beam 200 and the main pier, while a conventional movable support is arranged between the main beam 200 and other piers except the main pier, or the anti-seismic movable ball-shaped support 100 of the embodiment may be arranged between the main beam 200 and all piers, so that the structural temperature displacement zero point of the main beam 200 may be locked near the midspan, and seismic force is borne by a plurality of piers, so as to play a role of "joint thrust resistance, cooperative anti-seismic".

Referring to fig. 2, in the present embodiment, a side of the spherical cap 122 slidably connected to the upper seat plate 121 is a plane, a side of the spherical cap 122 slidably connected to the lower seat plate 110 is a spherical surface, that is, the upper seat plate 121 and the spherical cap 122 slide in a plane, and the spherical cap 122 slides in a spherical surface with the lower seat plate 110, in order to reduce friction loss during sliding, a sliding friction pair 124 is further disposed in the sliding seat plate assembly 120, the sliding friction pair 124 is disposed between the lower seat plate 110 and the spherical cap 122 and between the spherical cap 122 and the upper seat plate 121, the sliding friction pair 124 may be a combination of a wear plate and a steel plate, the wear plate may be a polyethylene plate, a teflon plate, or the like, and the steel plate may be a stainless steel plate. In another embodiment, the side of the spherical cap 122 slidably connected to the lower seat plate 110 may be a plane, and the side of the spherical cap 122 slidably connected to the upper seat plate 121 may be a spherical surface.

In this embodiment, the longitudinal direction of the anti-seismic movable spherical bearing 100 corresponds to the bridge-following direction of the bridge, the transverse direction of the anti-seismic movable spherical bearing 100 corresponds to the bridge-following direction of the bridge, that is, the longitudinal direction of the anti-seismic movable spherical bearing 100 installed between the main beam 200 and the pier is parallel to the bridge-following direction of the bridge, the transverse direction of the anti-seismic movable spherical bearing 100 is parallel to the bridge-following direction of the bridge, and the limit adjusting devices 130 actually adjust the distance between the two limit adjusting devices 130 along the bridge-following direction of the bridge.

The limit adjusting device 130 of the present embodiment is disposed on the lower seat plate 110, that is, the limit adjusting device 130 is located at the lower portion of the anti-seismic movable ball-type support 100, that is, the anti-seismic movable ball-type support 100 of the present embodiment is the lower limit anti-seismic movable ball-type support 100. In practical applications, the limit adjusting device 130 may determine the specific adjustment amount of the limit adjusting device 130 according to the slippage and the limit requirements of the bridge under different temperature shrinkage and creep.

Referring to fig. 2 and 3, in the embodiment, two anti-vibration devices 140 are actually disposed, and along the transverse direction of the anti-vibration movable spherical bearing 100, the two anti-vibration devices 140 are located at two sides of the spherical crown 122, the cylinder 141 of each anti-vibration device 140 is connected to the sliding seat plate assembly 120, and the piston rod 142 of each anti-vibration device 140 is connected to the lower seat plate 110.

Specifically, the cylinder 141 of the present embodiment is connected to the upper seat plate 121, and more specifically, the anti-vibration device 140 of the present embodiment has two piston rods 142, the sliding seat plate assembly 120 further includes four catch plates 123, two of the four catch plates 123 are disposed at one end face of the cylinder 141, the other two of the four catch plates 123 are disposed at the other end face of the cylinder 141, the four catch plates 123 abut against the corresponding end faces, so that the cylinder 141 can be connected to the upper seat plate 121, and the piston rods 142 pass through the two catch plates 123 at the same side and are connected to the lower seat plate 110. The anti-vibration device 140 of the present embodiment may be a viscous damper or a speed locker, or may be another device having a cylinder 141 and a piston rod 142 and capable of being used for anti-vibration. In other embodiments, the cylinder 141 may be connected to the lower seat plate 110, and the piston rod 142 may be connected to the sliding seat plate assembly 120.

It is understood that when the cylinder 141 is connected to the sliding seat plate assembly 120, the cylinder 141 of the anti-vibration device 140 is not limited to being connected to only the upper seat plate 121, for example, referring to fig. 5, and in another embodiment, the sliding seat plate assembly 120 further includes a middle seat plate 125 having a sliding groove 125 a. The middle seat plate 125 is disposed between the two position-limiting adjusting devices 130 and slidably connected to the lower seat plate 110, and the sliding groove 125a is located on a side of the middle seat plate 125 away from the lower seat plate 110. The spherical cap 122 is disposed in the sliding groove 125a and slidably connected to the middle seat plate 125. One side of the upper seat plate 121 slidably connected to the spherical cap 122 extends into the sliding groove 125 a. The cylinder 141 is connected to the middle seat 125. That is, the spherical cap 122 may be slidably coupled to the lower seat plate 110 through the middle seat plate 125, and similarly, the sliding friction pair 124 may be provided between the lower seat plate 110 and the middle seat plate 125 and between the middle seat plate 125 and the spherical cap 122, and the cylinder 141 may be coupled to the middle seat plate 125.

In the related technology, when the temperature span of the high-speed railway concrete beam is greater than 200m and the temperature span of the steel beam is greater than 100m, a large number of steel rail telescopic regulators are needed according to the requirement of the stress of the rail, so that the displacement difference between the long and large bridge beam end telescopic displacement and the long steel rail telescopic displacement caused by the temperature is coordinated through the steel rail telescopic regulators, the temperature force of the long steel rail on the bridge can be automatically adjusted, and the load borne by the rail and the bridge is reduced. However, the rail expansion adjuster is high in cost and difficult to design and construct, and generally needs to be arranged in a straight section of a track, so that the arrangement of a large number of rail expansion adjusters not only increases the construction cost of a bridge and brings great difficulty to line selection and bridge design of a high-speed railway, but also severely limits the span of the high-speed railway bridge. In addition, the rail telescopic regulator is arranged on the rail, so that the problem of unsmooth structure between the switch rail and the stock rail is solved, and when a train runs to the switch rail at a high speed, large impact force is generated, and the running quality of the train is further influenced.

The spacing adjusting device 130 on the anti-seismic movable spherical bearing 100 of the embodiment can adjust the distance between the two spacing adjusting devices 130 according to the slippage and spacing requirements of the bridge under different temperature shrinkage and creep to limit the maximum distance of the upper seat plate 121 sliding relative to the lower seat plate 110 along the bridge direction of the bridge, when the bridge is under the normal operation condition, the anti-seismic movable spherical bearing 100 can bear the braking force of the high-speed railway, the acting force of the long rail and the wind power by utilizing the self frictional resistance to resist the movement of the main beam 200 under the action of the braking force of the high-speed railway, the acting force of the long rail and the wind power, so as to maintain the stability of the bridge restraint system, and can ensure that the main beam 200 can freely deform under the action of the temperature, thereby the anti-seismic movable spherical bearing 100 can meet the slippage and spacing requirements of the bridge structure under different temperature shrinkage and creep conditions, when, the earthquake-resistant device 140 can bear earthquake acting force, when the bridge is in a rare earthquake working condition, the limit adjusting device 130 can bear earthquake acting force, when the earthquake-resistant movable spherical support 100 of the embodiment is installed on the main pier of the bridge, a fixed support does not need to be installed on the bridge, namely, after the original fixed support is replaced by the earthquake-resistant movable spherical support 100 of the embodiment, the original common longitudinal constraint system is changed into a new cooperative constraint system, the cooperative constraint system can meet the sliding and limit requirements of the bridge structure under different temperature shrinkage creep conditions, and can have good stress stability under three working conditions of normal operation, earthquake design and rare earthquake, so that the bridge provided with the earthquake-resistant movable spherical support 100 of the embodiment can reduce the use of steel rail telescopic adjusters, the construction cost of the bridge is reduced, the design and construction difficulty of the bridge is reduced, the construction requirements of a high-speed railway bridge, particularly a high-speed railway long-span bridge, can be met, and the construction requirements of a curved bridge can be met. In addition, after the number of the steel rail telescopic regulators is reduced, the problem of structural irregularity between the switch rail and the stock rail can be eliminated to a certain extent, and therefore the train can be guaranteed to run more stably.

The earthquake-resistant movable spherical support 100 of the embodiment changes the situation that a conventional continuous system beam bridge needs to be provided with a large number of steel rail telescopic adjusters, and can be popularized and applied to continuous system beam bridges such as concrete continuous beams, partial cable-stayed bridges, continuous beam arch bridges and the like.

Referring to fig. 2, the limiting adjustment device 130 of the present embodiment includes a limiting plate 131, a force transmission plate 132 and an adjustment washer 133. The limit plate 131 is fixedly connected with the lower seat plate 110. The force transmission plate 132 is disposed on one side of the position-limiting plate 131 close to the spherical cap 122 and can move relative to the position-limiting plate 131 along the longitudinal direction of the aseismatic movable spherical bearing 100. The adjusting shim 133 is selectively interposed between the stopper plate 131 and the force transmission plate 132.

Specifically, one side of the upper seat plate 121, which is slidably connected with the spherical cap 122, of the present embodiment is located between two force transmission plates 132, the upper seat plate 121 can move in two opposite directions along the longitudinal direction of the aseismic movable spherical bearing 100, and when the upper seat plate 121 slides to an extreme position relative to the lower seat plate 110 along the longitudinal direction of the aseismic movable spherical bearing 100, the upper seat plate 121 abuts against the corresponding force transmission plate 132. That is, when the upper seat plate 121 moves to the limit position in one direction along the longitudinal direction of the aseismic movable ball-type bearing 100, the upper seat plate 121 abuts against the force transmission plate 132 of one limit adjustment device 130, and when the upper seat plate 121 moves to the limit position in the other direction along the longitudinal direction of the aseismic movable ball-type bearing 100, the upper seat plate 121 abuts against the force transmission plate 132 of the other limit adjustment device 130, thereby enabling the two limit adjustment devices 130 to limit the maximum distance that the upper seat plate 121 slides relative to the lower seat plate 110 along the longitudinal direction of the aseismic movable ball-type bearing 100. The force transmission plate 132 of this embodiment is a flat plate structure, that is, the end surface of the side of the force transmission plate 132 facing the upper seat plate 121 is a plane, the end surface of the side of the upper seat plate 121 facing the force transmission plate 132 is also a plane, and in order to determine the adjustment amount of the limiting adjustment device 130, as shown in fig. 1, in practical application, the gap size L between the upper seat plate 121 and the force transmission plate 132 can be determined according to the slippage and limiting requirements of the bridge under different temperature shrinkage creep, and the distance between the two limiting adjustment devices 130 can be ensured to meet the requirements by adjusting the gap size L between the upper seat plate 121 and the force transmission plate 132.

When the middle seat plate 125 is provided in the anti-seismic movable ball type mount 100, the middle seat plate 125 may abut against the corresponding force transmission plate 132 when the upper seat plate 121 slides to the limit position with respect to the lower seat plate 110 in the longitudinal direction of the anti-seismic movable ball type mount 100.

Further, in the present embodiment, the number of the adjusting shims 133 is plural, and at least two of the adjusting shims 133 have different thicknesses, so that in practical applications, after the required gap size L between the upper seat plate 121 and the force transmission plate 132 is determined according to the sliding and limiting requirements of the bridge under different temperature shrinkage creep, the gap size L can meet the requirements by combining the adjusting shims 133 with different numbers and/or different thicknesses.

The selective interposition of the adjustment shim 133 between the stopper plate 131 and the force transmission plate 132 means that one or more adjustment shims 133 may be interposed between the stopper plate 131 and the force transmission plate 132, or the adjustment shims 133 may not be interposed, depending on the adjustment amount actually required, and in other embodiments, only one adjustment shim 133 of one thickness specification may be provided.

Referring to fig. 2, the limiting adjustment device 130 of the present embodiment further includes a first adjustment bolt 134 and an adjustment nut 135, wherein a first through hole is disposed on the force transmission plate 132, and a second through hole is disposed on the limiting plate 131. The first adjusting bolt 134 includes a first rod portion 1342 and a first head portion 1341 disposed at one end of the first rod portion 1342, the first rod portion 1342 passes through the first through hole and the second through hole, and the first head portion 1341 abuts against the force transmission plate 132. An adjusting washer 133 interposed between the stopper plate 131 and the force transmission plate 132 is inserted into the first rod 1342. The adjusting nut 135 is disposed on a side of the stopper plate 131 away from the force transmission plate 132, and is threadedly coupled to the first rod portion 1342. When the gap L between the upper seat plate 121 and the force transmission plate 132 needs to be adjusted, the adjusting nut 135 needs to be loosened, then the corresponding adjusting washer 133 is detached or installed according to the actually required adjustment amount, and then the adjusting nut 135 is tightened.

Further, referring to fig. 2 and 4, the adjusting shim 133 of the present embodiment is provided with a locking groove 133a, and one end of the locking groove 133a extends to an edge of the adjusting shim 133 to form an opening 133b at the edge of the adjusting shim 133. When the adjusting shim 133 is installed, the first rod part 1342 can be clamped into the locking groove 133a through the opening 133b, so that the adjusting shim 133 is arranged on the first rod part 1342 in a penetrating manner, when the adjusting shim 133 needs to be detached, the adjusting shim 133 can be moved, the first rod part 1342 is moved out of the locking groove 133a from the opening 133b, and therefore the adjusting shim 133 can be conveniently detached.

For example, in other embodiments, a guide groove may be formed in the lower seat plate 110 along the longitudinal direction of the shock-resistant ball-type seat 100, one end of the force transmission plate 132 close to the lower seat plate 110 may be disposed in the guide groove, so that the force transmission plate 132 can slide in the guide groove, and the adjusting washer 133 may be directly interposed between the limiting plate 131 and the force transmission plate 132.

Similarly, the position limiting adjustment device 130 is not limited to the combination of the position limiting plate 131, the force transmission plate 132 and the adjustment washer 133, for example, referring to fig. 6, in another embodiment, the position limiting adjustment device 130 may include: the stopper plate 131, the second adjusting bolt 136, and a plurality of adjusting blocks 137 having different thicknesses from each other. The limit plate 131 is fixedly connected with the lower seat plate 110. The second adjusting bolt 136 includes a second shaft 1362 and a second head 1361 disposed at an end of the second shaft 1362, the second shaft 1362 passes through the retainer plate 131 and is threadedly connected to the retainer plate 131, and the second head 1361 is disposed at a side of the retainer plate 131 away from the spherical cap 122. An end of second shaft 1362 distal from second head 1361 is selectively threadably coupled to one of plurality of adjustment blocks 137. When the distance between the two limiting and adjusting devices 130 needs to be adjusted, the second adjusting bolt 136 only needs to be loosened, and then the adjusting block 137 corresponding to the thickness is replaced according to the actual required adjustment amount.

In addition, since the cylinder 141 is connected to the sliding seat plate assembly 120, the upper seat plate 121 of the present embodiment can only slide along the bridge direction, but cannot slide along the transverse bridge direction, that is, the shock-resistant ball-type seat 100 of the present embodiment is a one-way shock-resistant ball-type seat 100 that can only slide along the bridge direction. However, in practical application, another movable ball-type support can be designed, which is different from the anti-seismic movable ball-type support 100 of the present embodiment mainly in that the anti-seismic device 140 is not disposed on the movable ball-type support, that is, the upper seat plate of the movable ball-type support can slide along the bridge-following direction or the transverse bridge-following direction, that is, the movable ball-type support is a bidirectional movable ball-type support capable of sliding along the bridge-following direction and the transverse bridge-following direction. Meanwhile, two spherical supports can be arranged on each pier along the transverse bridge direction, one spherical support is a one-way anti-seismic movable spherical support 100, and the other spherical support is a two-way movable spherical support, so that the stability of the bridge is improved.

Example two

Referring to fig. 7, the second embodiment of the present invention provides another anti-seismic movable ball-shaped support 100, and the anti-seismic movable ball-shaped support 100 is mainly different from the first embodiment of the present invention in that the two limiting adjustment devices 130 of the present embodiment are disposed on the upper seat plate 121, but not on the lower seat plate 110, that is, the anti-seismic movable ball-shaped support 100 of the present embodiment is the upper limiting anti-seismic movable ball-shaped support 100. In the present embodiment, the piston rod 142 of the anti-vibration device 140 is connected to the upper seat plate 121 of the sliding seat plate assembly 120, and the cylinder 141 is connected to the lower seat plate 110.

Specifically, one end of the lower seat plate 110 of the present embodiment, which is slidably connected with the spherical cap 122, is located between the two force transmission plates 132, and when the upper seat plate 121 is slid to an extreme position relative to the lower seat plate 110 in the longitudinal direction of the movable spherical bearing, the lower seat plate 110 abuts against the corresponding force transmission plate 132. That is, when the upper seat plate 121 moves to the limit position in one direction along the longitudinal direction of the movable ball-type bearing, the lower seat plate 110 abuts against the force transmission plate 132 of one limit adjustment device 130, and when the upper seat plate 121 moves to the limit position in the other direction along the longitudinal direction of the movable ball-type bearing, the lower seat plate 110 abuts against the force transmission plate 132 of the other limit adjustment device 130, thereby enabling the two limit adjustment devices 130 to limit the maximum distance that the upper seat plate 121 slides relative to the lower seat plate 110 along the longitudinal direction of the movable ball-type bearing.

It is understood that, in other embodiments, when the middle seat plate 125 is provided in the movable ball-type mount, the middle seat plate 125 may abut against the corresponding force transmission plate 132 when the upper seat plate 121 slides to an extreme position with respect to the lower seat plate 110 in the longitudinal direction of the movable ball-type mount.

Further, the adjusting shim 133 of the limiting adjustment device 130 of the present embodiment is also provided with a locking groove 133a, in order to prevent the adjusting shim 133 inserted into the first rod 1342 from sliding out from between the limiting plate 131 and the force transmission plate 132, the limiting adjustment device 130 of the present embodiment further includes a cover plate 138, and the cover plate 138 covers an end of the adjusting shim 133 away from the upper seat plate 121 and is detachably connected to the limiting plate 131.

Other structures of the aseismic movable ball type bearing 100 of the present embodiment are similar to the aseismic movable ball type bearing 100 provided in the first embodiment, and are not described herein again.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. The utility model provides an antidetonation activity ball-type support of bridge which characterized in that includes:

a lower seat plate;

the sliding seat plate assembly comprises an upper seat plate and a spherical crown, the spherical crown is arranged between the upper seat plate and the lower seat plate, one side of the spherical crown is in sliding connection with the upper seat plate, and one side of the spherical crown, which is far away from the upper seat plate, is in sliding connection with the lower seat plate;

the two limiting adjusting devices are arranged on the upper seat plate or the lower seat plate, and are positioned on two sides of the spherical crown along the longitudinal direction of the anti-seismic movable spherical support; the limit adjusting devices can adjust the distance between the two limit adjusting devices along the longitudinal direction of the anti-seismic movable spherical support so as to limit the maximum sliding distance of the upper seat plate relative to the lower seat plate along the longitudinal direction of the anti-seismic movable spherical support;

the anti-seismic device is longitudinally arranged along the anti-seismic movable spherical support and comprises a cylinder barrel and a piston rod, one of the cylinder barrel and the piston rod is connected with the sliding seat plate assembly, and the other of the cylinder barrel and the piston rod is connected with the lower seat plate.

2. An aseismatic movable ball-type support according to claim 1, wherein the limit adjustment means comprises a limit plate, a dowel plate and an adjustment washer;

the limiting plate is fixedly connected with the upper seat plate or the lower seat plate;

the force transmission plate is arranged on one side, close to the spherical crown, of the limiting plate and can move relative to the limiting plate along the longitudinal direction of the anti-seismic movable spherical support;

the adjusting gasket is selectively clamped between the limiting plate and the force transmission plate.

3. An aseismatic movable spherical support according to claim 2, characterized in that the limiting adjustment device further comprises a first adjustment bolt and an adjustment nut, the force transmission plate is provided with a first through hole, and the limiting plate is provided with a second through hole;

the first adjusting bolt comprises a first rod part and a first head part arranged at one end of the first rod part, the first rod part penetrates through the first through hole and the second through hole, and the first head part is abutted to the dowel plate;

the adjusting gasket clamped between the limiting plate and the dowel plate penetrates through the first rod part;

the adjusting nut is arranged on one side, far away from the dowel plate, of the limiting plate and is in threaded connection with the first rod part.

4. An aseismatic movable ball-type bearing according to claim 3, wherein the adjusting washer is provided with a locking groove, one end of the locking groove extends to the edge of the adjusting washer to form an opening at the edge of the adjusting washer;

the first rod part is clamped into the locking groove through the opening, so that the adjusting gasket is arranged on the first rod part in a penetrating mode.

5. An aseismatic movable spherical bearing according to any one of claims 2 to 4, characterized in that the number of said adjusting shims is plural, and at least two of said adjusting shims among said plural adjusting shims have different thicknesses.

6. An aseismatic movable ball-type support according to claim 1, characterized in that the limit adjustment means comprises a limit plate, a second adjustment bolt, and a plurality of adjustment blocks of mutually different thicknesses;

the limiting plate is fixedly connected with the upper seat plate or the lower seat plate;

the second adjusting bolt comprises a second rod part and a second head part arranged at one end of the second rod part, the second rod part penetrates through the limiting plate and is in threaded connection with the limiting plate, and the second head part is positioned on one side, far away from the spherical crown, of the limiting plate;

one end of the second rod part far away from the second head part is selectively connected with one of the adjusting blocks in a threaded mode.

7. An aseismatic movable spherical bearing according to any one of claims 1 to 4, 6, characterized in that the cylinder is connected with the upper deck.

8. An aseismatic living ball bearing according to any of claims 2-4, characterized in that the sliding seat plate assembly further comprises a middle seat plate having a sliding groove;

the middle seat plate is arranged between the two limiting and adjusting devices and is in sliding connection with the lower seat plate, and the sliding groove is positioned on one side, far away from the lower seat plate, of the middle seat plate;

the spherical crown is arranged in the sliding groove and is in sliding connection with the middle seat plate;

one side of the upper seat plate, which is in sliding connection with the spherical crown, extends into the sliding groove;

the cylinder barrel is connected with the middle base plate.

9. An aseismatic active ball bearing as claimed in claim 8, wherein two of the limit adjustment devices are provided on a lower seat plate, and when the upper seat plate slides to a limit position relative to the lower seat plate along the longitudinal direction of the aseismatic active ball bearing, the middle seat plate abuts against the corresponding force transmission plate.

10. An aseismatic movable ball-type bearing according to any one of claims 1 to 4 or 6, characterized in that the number of said aseismatic means is two, two of said aseismatic means being located on both sides of said spherical cap in the transversal direction of said aseismatic movable ball-type bearing.

11. An aseismatic movable ball-type bearing according to any one of claims 1 to 4, 6, characterized in that the aseismatic means can be a viscous damper or a speed locker.

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