An assembled bridge shock-absorbing structure

Abstract

The present invention relates to the field of bridges, and particularly provides an assembled bridge shock-absorbing structure, which includes two supports and a viscous damper. The viscous damper includes: a first housing filled with a damping medium therein; a piston rod axially penetrating through the first housing; a piston plate disposed on the piston rod and located within the first housing; a plurality of damping holes spaced apart on the piston plate; a plurality of spray heads disposed on the piston plate; the spray head includes a liquid storage cavity and a slender nozzle communicating with the liquid storage cavity. In the solution of the present invention, by providing a spray head and a slender nozzle on the piston plate of the viscous damper, the flow rate of the damping medium increases after flowing from the spray head into the nozzle. After the damping medium flows out of the nozzle, the spraying distance is farther, thereby avoiding local overheating near the piston plate, improving the heat dissipation effect of the damping medium, further improving the overall shock-absorbing effect, and reducing potential safety hazards.

Description

Technical Field

[0001] The invention relates to the field of bridges, and in particular to an assembled bridge shock-absorbing structure. Background Art

[0002] During the construction of bridges, in order to improve the shock-absorbing ability of bridges, viscous dampers are usually installed at multiple locations of the bridge to play a role in buffering energy consumption. When an earthquake occurs, the frequent high-speed operation of the viscous damper piston and cylinder will convert a large amount of heat energy. This energy conversion causes the temperature of the medium inside the damper to rise sharply, which in turn causes two problems: first, the viscosity of the damping medium decreases, affecting its energy consumption capacity; second, the pressure in the cylinder increases sharply, which not only shortens the service life of the sealing system, but also increases the risk of damper failure or even explosion. At present, most existing technologies rely on natural convection of the damping cylinder wall to dissipate heat. This method has limited heat dissipation efficiency and is difficult to effectively cope with the huge heat energy accumulation generated by earthquakes. It directly restricts the performance of the damping medium and reduces its energy consumption efficiency, thereby affecting the overall shock-absorbing effect. Summary of the invention

[0003] The purpose of the present invention is to improve the heat dissipation effect of the viscous damper, thereby improving the shock absorption effect.

[0004] In particular, the present invention provides an assembled bridge shock-absorbing structure, comprising: two supports, respectively arranged on a bridge and a base for supporting the bridge; a viscous damper, with its two ends respectively connected to the two supports, the viscous damper comprising: a first shell, which is filled with a damping medium; a piston rod, which axially penetrates the first shell; a piston plate, which is arranged on the piston rod and located in the first shell; a plurality of damping holes are arranged at intervals on the piston plate; a plurality of nozzles are arranged on the piston plate; the nozzle comprises a liquid storage chamber and an elongated nozzle communicated with the liquid storage chamber; the piston rod is configured to drive the piston plate to move in the first shell when vibrated, so that the damping medium flows in the damping hole; wherein, when the damping medium flows in the damping hole, part of it is diverted to the nozzle.

[0005] Furthermore, a plurality of first flow channels and a second flow channel are arranged on the piston plate; the plurality of first flow channels penetrate the piston plate, and are respectively connected to a nozzle at both ends; the second flow channel is annular and is arranged in the middle position of the piston plate; the second flow channel is connected to each damping hole on the side facing the axis, and is connected to each first flow channel on the side facing away from the axis; the viscous damper also includes: a movable plate, which is arranged in the second flow channel, and a block adapted to the shape of the first flow channel is arranged on the movable plate; the movable plate is configured to move according to the flow direction of the damping medium, driving the block to block one end of the first flow channel, so that the damping medium flows in one direction.

[0006] Furthermore, the movable plate is provided with a plurality of fixed columns and a corresponding plurality of movable columns; the plurality of fixed columns are staggered on the two end surfaces of the movable plate; the plurality of movable columns are movably arranged on the movable plate; the piston plate is provided with a plurality of movable grooves and a plurality of connecting grooves; one end of the movable groove is connected with the second flow channel, and the other end penetrates the piston plate; the connecting groove is in a horizontal U-shape, both ends of which are connected with the second flow channel, and one end of the connecting groove is opposite to the movable groove; the movable column penetrates the second flow channel, one end extends into the corresponding movable groove, and the other end extends into one end of the corresponding connecting groove; the fixed column extends into the other end of the corresponding connecting groove; the movable column is configured to move in the same direction as the damping medium under the push of the damping medium, and push the fixed column to move in the opposite direction, thereby driving the movable plate to move in the opposite direction, so that the block on the movable plate blocks one end of the first flow channel.

[0007] Furthermore, the assembled bridge shock-absorbing structure also includes: a plurality of mounting seats, which are arranged on the piston plate and correspond to the plurality of nozzles one by one; the mounting seats are connected to the first flow channel; the nozzles are rotatably arranged in the mounting seats and connected to the mounting seats; and the nozzles are configured to rotate according to the pressure difference at both ends of the piston plate.

[0008] Furthermore, an annular mounting groove is respectively provided on both end surfaces of the piston plate, an annular plate is provided in the mounting groove, and mounting ports are provided at positions on the annular plate corresponding to the multiple first flow channels; the mounting port is connected to the first flow channel; the mounting seat is provided with a mounting cylinder, and the mounting cylinder extends into the mounting port; a first tension spring is provided between the mounting seat and the mounting port; annular protrusions are respectively provided on both end surfaces of the piston plate, and the inner wall surface of the annular protrusion is an inclined surface; a radially arranged limit cylinder is formed at the center of the liquid storage cavity, and the limit cylinder runs through the liquid storage cavity; a limit rod is provided in the limit cylinder, one end of the limit rod abuts against the inner wall surface of the annular protrusion, and the other end is provided with a limit disk; a second tension spring is provided between the limit disk and the mounting seat; a spiral groove is provided on the limit cylinder, and a spherical protrusion adapted to the spiral groove is provided on the limit rod.

[0009] Furthermore, an inner tube is provided at the end of the mounting tube, and the inner tube is bent from the end surface of the mounting tube toward the inside of the mounting tube; an end cover is provided at the end of the inner tube away from the first flow channel, and a spring is provided between the end cover and the mounting tube to press the end cover against the inner tube.

[0010] Furthermore, the annular plate is rotatably arranged in the mounting groove, and a plurality of balls are arranged at intervals on the side wall of the annular plate; a plurality of stirring blades are arranged at intervals on the end surface of the annular plate away from the second flow channel.

[0011] Further, a second housing and a third housing are respectively arranged at two ends of the first housing, and a cooling medium is filled in the second housing and the third housing; a plurality of radiating pipes are arranged on the outer side of the first housing, and the plurality of radiating pipes communicate the second housing and the third housing; one end of the piston rod penetrates through the second housing and is hinged to a support, and the other end of the piston rod extends into the third housing, and the third housing is hinged to another support; a partition is respectively arranged in the second housing and the third housing, and a compression spring is arranged on the end surface of the partition facing the first housing; two limiting rings are arranged on the piston rod, and the two limiting rings are located between the two partitions and respectively abut against one partition.

[0012] Further, the radiating pipes are spirally arranged on the outer periphery of the first housing, and the spiral direction of the radiating pipes is opposite to the rotation direction of the annular plate.

[0013] Further, the viscous damper further includes: a plurality of fixing rods, which are arranged in one-to-one correspondence with the plurality of damping holes; the fixing rods pass through the damping holes and are connected to the two end faces of the first housing; a gap for the damping medium to flow through is left between the fixing rods and the damping holes; the fixing rods include a first section, a second section and a third section which are connected in sequence; wherein, the diameter of the first section gradually shrinks from one end far away from the second section to the other end, the diameter of the second section remains unchanged, and the diameter of the third section gradually expands from one end close to the second section to the other end; and the fixing rods are symmetric with respect to their central points.

[0014] The beneficial effects of the present invention are:

[0015] For the assembled bridge shock-absorbing structure of the present invention, by arranging a nozzle and an elongated nozzle on the piston plate of the viscous damper, after the damping medium flows from the nozzle into the nozzle, the flow rate increases. After the damping medium flows out of the nozzle, the spraying distance is farther, thereby avoiding local overheating near the piston plate, improving the heat dissipation effect of the damping medium, further improving the overall shock-absorbing effect, and reducing potential safety hazards.

[0016] Further, for the assembled bridge shock-absorbing structure of the present invention, the nozzle is configured to rotate according to the pressure difference at both ends of the piston plate, so that the damping medium can be dispersed around through the rotation of the nozzle, thereby improving the heat dissipation effect.

[0017] Further, for the assembled bridge shock-absorbing structure of the present invention, the nozzle is installed on the annular plate, and the annular plate is arranged to be rotatable in the installation groove, and the reaction force of the damping medium sprayed by the rotating nozzle is utilized to push the annular plate to rotate. The stirring blades on the annular plate rotate, driving the damping medium to rotate, not only improving the heat exchange rate between the piston plate and other components and the damping medium, but also improving the temperature uniformity of the damping medium in the first housing as a whole, and enhancing the heat dissipation effect. Description of the Drawings

[0018] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative rather than restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. In the drawings:

[0019] Figure 1 is an assembly schematic diagram of a prefabricated bridge shock absorption structure, a bridge, and a base according to an embodiment of the present invention;

[0020] Figure 2 is a structural schematic diagram of a viscous damper according to an embodiment of the present invention;

[0021] Figure 3 is a structural schematic diagram of the viscous damper from another angle according to an embodiment of the present invention;

[0022] Figure 4 is along Figure 3 the schematic cross-sectional view taken along the cutting line A-A in

[0023] Figure 5 is along Figure 3 the schematic cross-sectional view taken along the cutting line B-B in

[0024] Figure 6 is Figure 5 the schematic enlarged view of the region X in

[0025] Figure 7 is Figure 6 the schematic enlarged view of the region Y in

[0026] Figure 8 is the exploded schematic diagram of the viscous damper according to an embodiment of the present invention; wherein, the structures such as the second housing and the third housing are hidden;

[0027] Figure 9 is the structural schematic diagram of an annular plate, a nozzle, and a mounting seat according to an embodiment of the present invention;

[0028] Figure 10 is the exploded schematic diagram of a moving plate according to an embodiment of the present invention; wherein, the structures of some moving columns are hidden;

[0029] Figure 11 is the axonometric sectional view of the nozzle according to an embodiment of the present invention;

[0030] Figure 12 is the structural schematic diagram of a piston rod and a piston plate according to an embodiment of the present invention;

[0031] Figure 13 is Figure 12 the schematic enlarged view of the region Z in

[0032] Figure 14Is an axonometric sectional view of a piston rod and a piston plate according to an embodiment of the present invention; wherein, some structures of the piston rod are hidden;

[0033] Wherein:

[0034] 100, bridge; 200, base; 300, support; 400, viscous damper; 410, first housing; 411, damping medium; 412, second housing; 413, third housing; 414, heat dissipation pipe; 415, connecting pipe; 416, partition; 417, compression spring; 420, piston rod; 421, limit ring; 430, piston plate; 431, damping hole; 432, first flow channel; 433, second flow channel; 434, moving groove; 435, communicating groove; 436, mounting groove; 437, annular protrusion; 438, connecting block; 440, fixing rod; 441, first section; 442, second section; 443, third section; 450, nozzle; 451, liquid storage cavity; 452, nozzle; 453, limiting cylinder; 4531, spiral groove; 454, limiting rod; 4541, spherical protrusion; 455, limiting disc; 456, second tension spring; 460, moving plate; 461, stop block; 462, fixing column; 463, moving column; 464, through hole; 470, mounting seat; 471, mounting cylinder; 472, first tension spring; 473, inner cylinder; 474, end cover; 475, spring; 480, annular plate; 481, mounting opening; 482, ball; 483, stirring blade. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The terms "first" and "second" in this article are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0037] Unless otherwise expressly specified and defined, terms such as "install", "connect", "join", "fix", "couple", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0038] It should be understood that the orientation or positional relationship indicated by terms such as "inner", "outer", "axial", "radial", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0039] The following will refer to Figures 1 to 14 to describe an assembled bridge shock-absorbing structure provided by the present invention.

[0040] The assembled bridge shock-absorbing structure generally may include: two bearings 300 and a viscous damper 400.

[0041] The two bearings 300 are respectively arranged on the bridge 100 and the base 200 for supporting the bridge 100. The two ends of the viscous damper 400 are respectively connected to the two bearings 300.

[0042] The viscous damper 400 generally may include: a first housing 410, a piston rod 420, a piston plate 430, and a plurality of nozzles 450.

[0043] The first housing 410 is filled with a damping medium 411. The piston rod 420 axially penetrates the first housing 410. The piston plate 430 is arranged on the piston rod 420 and is located inside the first housing 410. A plurality of damping holes 431 are arranged at intervals on the piston plate 430. A plurality of nozzles 450 are arranged on the piston plate 430. The nozzle 450 includes a liquid storage cavity 451 and a slender nozzle 452 communicating with the liquid storage cavity 451. The piston rod 420 is configured to drive the piston plate 430 to move inside the first housing 410 when subjected to vibration, so that the damping medium 411 flows in the damping holes 431. Among them, when the damping medium 411 flows in the damping holes 431, part of it is diverted to the nozzle 450.

[0044] When the bridge 100 is vibrated, the vibration is transmitted to the piston rod 420, so that the piston rod 420 drives the piston plate 430 to move in the first shell 410. The movement of the piston plate 430 causes a pressure difference in the damping medium 411 on both sides of the piston plate 430. The damping medium 411 flows from the high-pressure side to the low-pressure side through the damping hole 431. The damping medium 411 generates a damping force during the flow process, thereby converting the kinetic energy generated by the vibration into heat, which is then dissipated through the heat exchange between the first shell 410 and the surrounding environment. Finally, the moving speed of the piston plate 430 is gradually reduced, achieving the purpose of damping energy consumption. In some embodiments, one end of the first shell 410 can be directly hinged to a support 300, and the other end of the first shell 410 can be hinged to another support 300 through the extended piston rod 420. When the bridge 100 is vibrated, the piston rod 420 and the first shell 410 can rotate relative to the support 300, and the piston rod 420 can move relative to the first shell 410 to achieve damping energy dissipation.

[0045] In the solution of this embodiment, a nozzle 450 and an elongated nozzle 452 are arranged on the piston plate 430, so that the damping medium 411 increases its flow rate after flowing from the nozzle 450 into the nozzle 452. After the damping medium 411 flows out from the nozzle 452, the spray distance is farther, thereby avoiding local overheating near the piston plate 430, improving the heat dissipation effect of the viscous damper 400, and improving the efficiency of the viscous damper 400 in converting the motion generated by vibration into heat energy and dissipating it, thereby effectively reducing the vibration speed and amplitude of the bridge 100, reducing the impact and damage of the vibration on the bridge 100, improving the shock-absorbing effect of the assembled bridge shock-absorbing structure, and reducing safety hazards.

[0046] Diverting part of the damping medium 411 in the damping hole 431 to the nozzle 450 can not only improve the heat dissipation capacity by utilizing the nozzle 450, but also realize multi-path flow of the damping medium 411, so that after the damping medium 411 flows to the other end of the piston plate 430, it is more dispersed in the first shell 410, thereby further improving the heat dissipation capacity.

[0047] The piston plate 430 is provided with a plurality of first flow channels 432 and a second flow channel 433. The plurality of first flow channels 432 penetrate the piston plate 430, and are respectively connected to a nozzle 450 at both ends. The second flow channel 433 is annular and is arranged in the middle of the piston plate 430. The second flow channel 433 is connected to each damping hole 431 on one side facing the axis, and is connected to each first flow channel 432 on the other side facing away from the axis.

[0048] The viscous damper 400 generally may further include a moving plate 460. The moving plate 460 is disposed in the second flow channel 433, and a stop block 461 adapted to the shape of the first flow channel 432 is disposed on the moving plate 460. The moving plate 460 is configured to move according to the flow direction of the damping medium 411, driving the stop block 461 to block one end of the first flow channel 432, so that the damping medium 411 flows unidirectionally.

[0049] In the solution of this embodiment, by providing the first flow channel 432 axially penetrating the piston plate 430 and the annularly arranged second flow channel 433, the damping medium 411 in the damping hole 431 is successfully diverted to the nozzle 450, increasing the flow path of the damping medium 411. By providing the moving plate 460 in the second flow channel 433 and using the stop block 461 on the moving plate 460 to block the first flow channel 432, the damping medium 411 flows unidirectionally, avoiding the influence of the backflow of the damping medium 411 on the heat dissipation effect.

[0050] A plurality of fixing columns 462 and corresponding plurality of moving columns 463 are disposed on the moving plate 460. The plurality of fixing columns 462 are staggered on the two end faces of the moving plate 460; the plurality of moving columns 463 are movably disposed on the moving plate 460. A plurality of moving grooves 434 and a plurality of communicating grooves 435 are disposed on the piston plate 430. One end of the moving groove 434 communicates with the second flow channel 433, and the other end penetrates the piston plate 430. The communicating groove 435 is in a horizontal U shape, and both ends communicate with the second flow channel 433, and one end thereof is opposite to the moving groove 434. The moving column 463 penetrates the second flow channel 433, one end extends into the corresponding moving groove 434, and the other end extends into one end of the corresponding communicating groove 435. The fixing column 462 extends into the other end of the corresponding communicating groove 435. The moving column 463 is configured to move in the same direction as the damping medium 411 under the push of the damping medium 411, and push the fixing column 462 to move in the opposite direction, thereby driving the moving plate 460 to move in the opposite direction, so that the stop block 461 on the moving plate 460 blocks one end of the first flow channel 432.

[0051] In the solution of this embodiment, by providing the horizontal U-shaped communicating groove 435 and the moving groove 434 opposite to the communicating groove 435 on the piston plate 430, using the pressure difference of the damping medium 411 on both sides of the piston plate 430, the moving column 463 in the moving groove 434 on the high-pressure side moves into the corresponding communicating groove 435. The moving column 463 penetrates into the communicating groove 435, increasing the pressure in the communicating groove 435, thereby pushing the fixing column 462 and driving the moving plate 460 to move in a direction away from the communicating groove 435, and then using the stop block 461 to block one end of the first flow channel 432 close to the high-pressure end of the first housing 410, ensuring the unidirectional flow of the damping medium 411.

[0052] As Figure 10As shown, a plurality of through holes 464 through which the moving columns 463 can pass are provided on the moving plate 460. The fixed columns 462 are staggeredly arranged on the two end faces of the piston plate 430, ensuring that during the movement of the piston plate 430, no matter which side of the piston plate 430 is the high-pressure side, it can push the moving plate 460 to move, so that the stopper 461 blocks one end of the first flow channel 432 close to the high pressure, ensuring that the damping medium 411 can flow unidirectionally, reducing the risk of backflow of the damping medium 411, ensuring the heat dissipation efficiency, and thus improving the shock absorption performance.

[0053] In some embodiments, the communication groove 435 may be filled with a transmission medium. The transmission medium may be configured as a gas or a liquid.

[0054] The viscous damper 400 generally may further include a plurality of mounting seats 470.

[0055] A plurality of mounting seats 470 are arranged on the piston plate 430, corresponding to the plurality of nozzles 450 one by one. The mounting seat 470 is communicated with the first flow channel 432. The nozzle 450 is rotatably arranged in the mounting seat 470 and is communicated with the mounting seat 470. And the nozzle 450 is configured to rotate according to the pressure difference between the two ends of the piston plate 430.

[0056] In the solution of this embodiment, the nozzle 450 is configured to rotate according to the pressure difference between the two ends of the piston plate 430, so that the damping medium 411 can be dispersed around through the rotation of the nozzle 450, reducing the risk of local overheating and improving the heat dissipation effect.

[0057] In some embodiments, the liquid storage cavity 451 of the nozzle 450 may be spherical, and a corresponding spherical groove is formed on the mounting seat 470 to make the rotation of the nozzle 450 smoother.

[0058] An annular mounting groove 436 is provided on each of the two end faces of the piston plate 430. An annular plate 480 is arranged in the mounting groove 436. Mounting openings 481 are arranged at positions corresponding to the plurality of first flow channels 432 on the annular plate 480. The mounting openings 481 are communicated with the first flow channels 432. The mounting seat 470 is provided with a mounting cylinder 471, and the mounting cylinder 471 extends into the mounting opening 481. A first tension spring 472 is arranged between the mounting seat 470 and the mounting opening 481.

[0059] In the solution of this embodiment, by providing the mounting cylinder 471 on the mounting seat 470 and the mounting opening 481 on the annular plate 480, and making the mounting cylinder 471 extend into the mounting opening 481, the mounting seat 470 and the annular plate 480 are connected together. By providing the first tension spring 472 between the mounting seat 470 and the mounting opening 481, the connection between the mounting seat 470 and the annular plate 480 is made more tightly stable, reducing the risk of the mounting seat 470 falling off the annular plate 480.

[0060] In some preferred embodiments, the two ends of the first tension spring 472 can be fixedly connected to the mounting seat 470 and the mounting opening 481 respectively.

[0061] Annular protrusions 437 are respectively arranged on the two end faces of the piston plate 430, and the inner wall surface of the annular protrusion 437 is an inclined surface. A radially arranged limiting cylinder 453 is formed at the center of the liquid storage cavity 451, and the limiting cylinder 453 penetrates through the liquid storage cavity 451. A limiting rod 454 is arranged in the limiting cylinder 453. One end of the limiting rod 454 abuts against the inner wall surface of the annular protrusion 437, and a limiting disk 455 is arranged at the other end. A second tension spring 456 is arranged between the limiting disk 455 and the mounting seat 470. A spiral groove 4531 is arranged on the limiting cylinder 453, and a spherical protrusion 4541 adapted to the spiral groove 4531 is arranged on the limiting rod 454.

[0062] In the solution of this embodiment, by arranging a limiting disk 455 at one end of the limiting rod 454 away from the annular protrusion 437 and arranging a second tension spring 456 between the limiting disk 455 and the mounting seat 470, the limiting rod 454 can abut against the inner wall surface of the annular protrusion 437 under the pulling force of the second tension spring 456. By setting the inner wall surface of the annular protrusion 437 as an inclined surface, when the mounting seat 470 axially moves under the pressure difference on both sides of the piston plate 430 and is pushed by the damping medium 411, the limiting rod 454 can move radially under the pressing of the annular protrusion 437. By arranging a spiral groove 4531 on the limiting cylinder 453 and arranging a corresponding spherical protrusion 4541 on the limiting rod 454, when the limiting rod 454 moves radially, the limiting cylinder 453 and the limiting rod 454 rotate relative to each other, thereby realizing the rotation of the nozzle 450.

[0063] In some preferred embodiments, the limiting rod 454 and the limiting disk 455 can be integrally formed. The two ends of the second tension spring 456 are respectively fixedly connected to the mounting seat 470 and the limiting disk 455 to ensure that the limiting rod 454 does not rotate self when moving radially.

[0064] In other embodiments, the spiral groove 4531 can be arranged on the limiting rod 454, and the spherical protrusion 4541 can be correspondingly arranged on the limiting cylinder 453. By using the cooperation of the spiral groove 4531 and the spherical protrusion 4541, the limiting rod 454 and the limiting cylinder 453 rotate relative to each other.

[0065] In some preferred embodiments, the outer sidewall of the annular protrusion 437 can be flush with the sidewall surface of the piston plate 430, and the inner wall surface of the annular protrusion 437 can be arranged to gradually move away from the piston rod 420 in the radial direction starting from the end far from the moving plate 460. The shapes of the spiral groove 4531 and the spherical protrusion 4541 can be set according to the maximum movable distance of the limiting rod 454 in the axial and radial directions, so that when the limiting cylinder 453 and the limiting rod 454 rotate relative to each other, the maximum rotation angle of the limiting cylinder 453 is 90°, and the limiting rod 454 will not disengage from the end face of the annular protrusion 437, thereby improving the structural stability thereof.

[0066] An inner cylinder 473 is provided at the end of the mounting cylinder 471, and the inner cylinder 473 is bent from the end face of the mounting cylinder 471 towards the inside of the mounting cylinder 471. A end cap 474 is provided at the end of the inner cylinder 473 facing away from the first flow channel 432, and a spring 475 is provided between the end cap 474 and the mounting cylinder 471 to press the end cap 474 against the inner cylinder 473.

[0067] In the solution of this embodiment, by providing the inner cylinder 473 in the mounting cylinder 471, providing the end cap 474 at the end of the inner cylinder 473 facing away from the first flow channel 432, and using the spring 475 to press the end cap 474 against the inner cylinder 473, the end cap 474 can only be pushed open when the pressure in the first flow channel 432 is greater than the pressure in the spray head 450, thereby ensuring that the damping medium 411 can only flow unidirectionally from the high-pressure side to the low-pressure side.

[0068] As Figure 7 shown, in some embodiments, the spring 475 between the end cap 474 and the mounting cylinder 471 can be a tension spring, one end of which is directly or indirectly connected to the end cap 474, and the other end is connected to the connection surface of the mounting cylinder 471 and the inner cylinder 473.

[0069] The annular plate 480 is rotatably arranged in the mounting groove 436, and a plurality of balls 482 are arranged at intervals on the sidewall of the annular plate 480. A plurality of stirring blades 483 are arranged at intervals on the end face of the annular plate 480 facing away from the second flow channel 433.

[0070] In the solution of this embodiment, the annular plate 480 is rotatably arranged in the mounting groove 436, so that when the spray head 450 rotates, the reaction force generated by the damping medium 411 ejected from the spray head 450 can push the annular plate 480, causing the annular plate 480 to rotate in the mounting groove 436. The plurality of stirring blades 483 arranged at intervals on the annular plate 480 drive the damping medium 411 in the first housing 410 to rotate as the annular plate 480 rotates, thereby improving the heat exchange efficiency between components such as the piston plate 430 and the damping medium 411, improving the overall temperature uniformity of the damping medium 411 in the first housing 410, and further enhancing the heat dissipation effect of the viscous damper 400.

[0071] The stronger the vibration of the bridge 100, the greater the displacement of the piston plate 430, and the greater the pressure generated by the damping medium 411. The greater the displacement of the mounting seat 470 in the axial direction under the action of the pressure, the greater the displacement of the limiting rod 454 in the radial direction. Correspondingly, the larger the rotation angle of the nozzle 450. The larger the rotation angle of the nozzle 450, the higher the rotation speed of the annular plate 480 under the reaction force of the damping medium 411 ejected from the nozzle 450, and the better the heat dissipation effect. As the damping liquid is conveyed, the pressures on both sides of the piston plate 430 gradually tend to balance, the nozzle 450 gradually rotates back, and the rotation speed of the annular plate 480 gradually decreases. The rotation angle of the nozzle 450 and the rotation speed of the annular plate 480 are adapted to the vibration condition of the bridge 100, greatly improving the heat dissipation efficiency of the viscous damper 400, thereby ensuring the shock absorption effect of the assembled bridge shock absorption structure.

[0072] As Figure 13 shown, the size of the connecting block 438 remaining between adjacent first flow channels 432 is preferably set to be smaller than the size of the mounting port 481 to ensure that the damping medium 411 can smoothly flow through the mounting port 481 to the nozzle 450 when the annular plate 480 rotates to any position.

[0073] Both ends of the first housing 410 are respectively provided with a second housing 412 and a third housing 413, and the second housing 412 and the third housing 413 are filled with a cooling medium. A plurality of heat dissipation tubes 414 are arranged on the outer side of the first housing 410, and the plurality of heat dissipation tubes 414 communicate the second housing 412 and the third housing 413. One end of the piston rod 420 penetrates through the second housing 412 and is hinged to a support 300, and the other end of the piston rod 420 extends into the third housing 413, and the third housing 413 is hinged to another support 300. A partition plate 416 is respectively arranged in the second housing 412 and the third housing 413, and a compression spring 417 is arranged on the end surface of the partition plate 416 facing the first housing 410. Two limiting rings 421 are arranged on the piston rod 420, and the two limiting rings 421 are located between the two partition plates 416 and respectively abut against a partition plate 416.

[0074] In the solution of this embodiment, by arranging the compression spring 417 and the limiting rings 421, when the piston rod 420 moves, it drives the partition plate 416 to move correspondingly, thereby squeezing the cooling medium to flow in the second housing 412, the third housing 413 and the heat dissipation tubes 414, and further improving the heat dissipation efficiency of the viscous damper 400.

[0075] The cooling medium may preferably adopt a liquid with good heat dissipation effect such as water or refrigerant.

[0076] In some embodiments, a plurality of connecting pipes 415 are provided between the second housing 412 and the heat dissipation pipe 414, and a plurality of connecting pipes 415 are also provided between the third housing 413 and the heat dissipation pipe 414. The connecting pipes 415 extend radially outward from the end of the second housing 412 or the third housing 413 away from the heat dissipation pipe 414, then bend, and extend axially to connect with the end of the heat dissipation pipe 414. By providing the connecting pipes 415, when the cooling medium in the heat dissipation pipe 414 flows between the second housing 412 and the third housing 413, it can exchange heat with the external environment more fully, further improving the heat dissipation efficiency of the viscous damper 400.

[0077] In some embodiments, the second housing 412 and the third housing 413 can be connected to the first housing 410 by fasteners.

[0078] The heat dissipation pipe 414 is spirally arranged on the outer periphery of the first housing 410, and the spiral direction of the heat dissipation pipe 414 is opposite to the rotation direction of the annular plate 480.

[0079] In the solution of this embodiment, the heat dissipation pipe 414 is spirally arranged, increasing the contact area between the heat dissipation pipe 414 and the first housing 410, thereby improving the heat dissipation efficiency of the viscous damper 400. The spiral direction of the heat dissipation pipe 414 is set to be opposite to the rotation direction of the annular plate 480, further improving the heat exchange efficiency between the damping medium 411 and the cooling medium in the heat dissipation pipe 414, and enhancing the heat dissipation effect of the viscous damper 400.

[0080] The viscous damper 400 generally may further include a plurality of fixing rods 440. The plurality of fixing rods 440 are arranged in one-to-one correspondence with the plurality of damping holes 431. The fixing rods 440 pass through the damping holes 431 and are connected to the two end faces of the first housing 410. A gap for the damping medium 411 to flow through is left between the fixing rods 440 and the damping holes 431. The fixing rod 440 includes a first section 441, a second section 442, and a third section 443 connected in sequence. Among them, the diameter of the first section 441 gradually decreases from the end away from the second section 442 to the other end, the diameter of the second section 442 remains unchanged, and the diameter of the third section 443 gradually increases from the end close to the second section 442 to the other end. And the fixing rod 440 is symmetric with its center point as the reference.

[0081] A plurality of fixing rods 440 are provided to pass through the corresponding damping holes 431, and the movement of the piston plate 430 is guided by the fixing rods 440, thereby improving the smoothness of the movement of the piston plate 430 in the first housing 410. In some preferred embodiments, the plurality of damping holes 431 can be evenly arranged on the piston plate 430.

[0082] Such as Figure 8As shown in the figure, in the solution of this embodiment, the first section 441 and the third section 443 at both ends of the fixing rod 440 are set to be conical, and the middle second section 442 is set to be cylindrical, so that the magnitude of the damping force provided by the viscous damper 400 matches the intensity of the vibration of the bridge 100. When the vibration of the bridge 100 is weak, the piston plate 430 moves back and forth on the second section 442, and the damping coefficient is constant. When the vibration of the bridge 100 is strong, the piston plate 430 moves to the first section 441 or the third section 443, and the gap between the damping hole 431 and the fixing rod 440 decreases, so that the damping coefficient increases. And when the piston plate 430 moves on the first section 441 or the third section 443, the closer the piston plate 430 is to the end face of the first housing 410, the smaller the gap between the damping hole 431 and the fixing rod 440, and the greater the damping force provided. The damping force provided by the viscous damper 400 matches the intensity of the vibration of the bridge 100, greatly improving the shock absorption effect of the assembled bridge shock absorption structure.

[0083] Combined with the above embodiments, the specific working process of the assembled bridge shock absorption structure provided by the present invention will be described:

[0084] When the bridge 100 is vibrated, through the support 300, the piston rod 420 is driven to reciprocate in the first housing 410, the second housing 412 and the third housing 413, thereby driving the piston plate 430 to move in the first housing 410, and at the same time driving the two partition plates 416 to move in the second housing 412 and the third housing 413 respectively.

[0085] During the movement of the piston plate 430, due to the extrusion of the piston plate 430, a high-pressure side and a low-pressure side are respectively formed on both sides of the piston plate 430. The damping medium 411 flows from the high-pressure side to the low-pressure side. The damping medium 411 first flows into the damping hole 431, and then a part of it continues to flow out along the damping hole 431, and the other part flows into the second flow channel 433. The damping medium 411 flowing into the second flow channel 433 flows through the first flow channel 432, the annular plate 480, the mounting seat 470, and finally enters the nozzle 450 and flows out through the nozzle 452. Among them, when the damping medium 411 flows from the annular plate 480 into the mounting seat 470, the mounting seat 470 axially moves under the high-pressure push of the damping medium 411, so that the limiting rod 454 radially moves under the pressing of the annular protrusion 437, thereby driving the nozzle 450 to rotate.

[0086] During the flow of the damping medium 411, the moving column 463 on the high-pressure side moves towards the low-pressure side under the extrusion of the damping medium 411, thereby pushing the fixed column 462 and the moving plate 460 towards the high-pressure side through the connecting groove, so that the block 461 on the moving plate 460 blocks one end of the first flow channel 432 close to the high-pressure side, thereby ensuring the one-way flow of the damping medium 411 from the high-pressure side to the low-pressure side and ensuring the heat dissipation effect.

[0087] When the two partition plates 416 move in the second housing 412 and the third housing 413, they push the cooling medium in the second housing 412 and the third housing 413 to flow through the heat dissipation tubes 414, thereby improving the heat dissipation efficiency.

[0088] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0089] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An assembled bridge shock-absorbing structure, characterized in that, include: Two supports, respectively arranged on the bridge and a base for supporting the bridge; The viscous damper has two ends connected to the two supports respectively, and the viscous damper comprises: A first shell, which is filled with a damping medium; A piston rod axially penetrates the first housing; A piston plate is arranged on the piston rod and is located in the first housing; a plurality of damping holes are arranged at intervals on the piston plate; A plurality of spray heads are arranged on the piston plate; the spray heads include a liquid storage cavity and an elongated nozzle communicating with the liquid storage cavity; The piston rod is configured to drive the piston plate to move in the first housing when vibrated, so that the damping medium flows in the damping hole; wherein, when the damping medium flows in the damping hole, part of it is diverted to the nozzle; The piston plate is provided with a plurality of first flow channels and a second flow channel; the plurality of first flow channels penetrate the piston plate, and are respectively connected to a nozzle at both ends; the second flow channel is annular and is arranged in the middle of the piston plate; the second flow channel is connected to each of the damping holes on one side facing the axis, and is connected to each of the first flow channels on the side facing away from the axis; The viscous damper further comprises: A plurality of mounting seats are arranged on the piston plate and are arranged one-to-one corresponding to the plurality of nozzles; the mounting seats are communicated with the first flow channel; The nozzle is rotatably disposed in the mounting seat and communicated with the mounting seat; and the nozzle is configured to rotate according to the pressure difference between the two ends of the piston plate; The two end surfaces of the piston plate are respectively provided with an annular mounting groove, an annular plate is provided in the mounting groove, and the positions of the annular plate corresponding to the first flow channels are all provided with mounting openings; the mounting openings are communicated with the first flow channels; The mounting seat is provided with a mounting tube, and the mounting tube extends into the mounting opening; a first tension spring is provided between the mounting seat and the mounting opening; Annular protrusions are respectively arranged on both end surfaces of the piston plate, and the inner wall surface of the annular protrusion is an inclined surface; A radially arranged limiting cylinder is formed at the center of the liquid storage cavity, and the limiting cylinder penetrates the liquid storage cavity; a limiting rod is arranged in the limiting cylinder, one end of the limiting rod abuts against the inner wall surface of the annular protrusion, and the other end is arranged with a limiting disk; a second tension spring is arranged between the limiting disk and the mounting seat; The limiting cylinder is provided with a spiral groove, and the limiting rod is provided with a spherical protrusion matched with the spiral groove.

2. The assembled bridge shock-absorbing structure according to claim 1 is characterized in that: The viscous damper further comprises: a moving plate disposed in the second flow channel, and a stopper adapted to the shape of the first flow channel is disposed on the moving plate; The movable plate is configured to move according to the flow direction of the damping medium, driving the stopper to block one end of the first flow channel, so that the damping medium flows in one direction.

3. The assembled bridge shock-absorbing structure according to claim 2 is characterized in that: The movable plate is provided with a plurality of fixed columns and a corresponding plurality of movable columns; the plurality of fixed columns are staggered on both end surfaces of the movable plate; the plurality of movable columns are movably arranged on the movable plate; The piston plate is provided with a plurality of moving grooves and a plurality of connecting grooves; one end of the moving groove is connected with the second flow channel, and the other end penetrates the piston plate; the connecting groove is in a horizontal U shape, both ends of which are connected with the second flow channel, and one end thereof is opposite to the moving groove; The movable column penetrates the second flow channel, one end of which extends into the corresponding movable groove, and the other end of which extends into one end of the corresponding connecting groove; the fixed column extends into the other end of the corresponding connecting groove; The movable column is configured to move in the same direction as the damping medium under the push of the damping medium, and push the fixed column to move in the opposite direction, thereby driving the movable plate to move in the opposite direction, so that the stopper on the movable plate blocks one end of the first flow channel.

4. The assembled bridge shock-absorbing structure according to claim 3 is characterized in that: An inner tube is provided at the end of the mounting tube, and the inner tube is bent from the end surface of the mounting tube toward the inside of the mounting tube; an end cover is provided at the end of the inner tube away from the first flow channel, and a spring is provided between the end cover and the mounting tube to press the end cover against the inner tube.

5. The assembled bridge shock-absorbing structure according to claim 3 is characterized in that: The annular plate is rotatably arranged in the mounting groove, and a plurality of balls are arranged at intervals on the side wall of the annular plate; A plurality of stirring blades are arranged at intervals on the end surface of the annular plate away from the second flow channel.

6. The assembled bridge shock-absorbing structure according to claim 4, characterized in that: A second shell and a third shell are respectively disposed at two ends of the first shell, and a cooling medium is filled in the second shell and the third shell; A plurality of heat dissipation pipes are arranged on the outer side of the first shell, and the plurality of heat dissipation pipes are connected with the second shell and the third shell; One end of the piston rod penetrates the second housing and is hinged to one of the supports, the other end of the piston rod extends into the third housing, and the third housing is hinged to another of the supports; A partition is provided in each of the second shell and the third shell, and a compression spring is provided on the end surface of the partition facing the first shell; The piston rod is provided with two limiting rings, which are located between the two partitions and respectively abut against one of the partitions.

7. The assembled bridge shock-absorbing structure according to claim 6 is characterized in that: The heat dissipation pipe is spirally arranged on the outer circumference of the first shell, and the spiral direction of the heat dissipation pipe is opposite to the rotation direction of the annular plate.

8. The prefabricated bridge shock-absorbing structure according to claim 1, characterized in that The viscous damper further comprises: A plurality of fixing rods are arranged corresponding to the plurality of damping holes one by one; the fixing rods pass through the damping holes and are connected to both end surfaces of the first shell; a gap is reserved between the fixing rods and the damping holes for the damping medium to flow; The fixing rod includes a first section, a second section and a third section connected in sequence; wherein, The diameter of the first section tapers from one end away from the second section towards the other end, the diameter of the second section remains unchanged, and the diameter of the third section expands from one end close to the second section towards the other end; and the fixing rod is symmetric about its center point.

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