CN117364616B - Anchor rope type energy consumption device and bridge - Google Patents
Anchor rope type energy consumption device and bridge Download PDFInfo
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- CN117364616B CN117364616B CN202311674645.9A CN202311674645A CN117364616B CN 117364616 B CN117364616 B CN 117364616B CN 202311674645 A CN202311674645 A CN 202311674645A CN 117364616 B CN117364616 B CN 117364616B
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- 238000004873 anchoring Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an anchor cable type energy consumption device and a bridge, which relate to the field of bridges, and are different from the problems that energy consumption components in the prior art are poor in deformation capability and easy to shear when resisting earthquake action.
Description
Technical Field
The invention relates to the field of bridges, in particular to an anchor cable type energy consumption device and a bridge.
Background
The energy consumption component of the bridge is an important guarantee for the safety and durability of the bridge structure, and the development condition of the energy consumption component is closely related to the technical progress in the field of bridge engineering. Along with frequent occurrence of natural disasters such as earthquake, wind disaster and the like and improvement of the safety performance requirements of the bridge, the related technology of the bridge energy consumption component is also developed. The energy consumption component can absorb energy generated by natural disasters such as earthquake, wind and the like, so that vibration and damage of the bridge structure are effectively reduced. Currently, damping-type energy consuming components have been developed in various types, such as viscous dampers, friction dampers, metallic yielding dampers, and the like. The viscous damper has larger energy consumption capacity, but is easily influenced by temperature and frequency; friction dampers have the advantage of being simple and reliable, but are prone to wear; metallic yielding dampers have a large energy absorbing capacity but require precise control of loading conditions.
The bridge energy consumption components in the prior art still have some defects when coping with positions and deformations generated by earthquake actions. The earthquake can generate different directions of action on the bridge, so that larger displacement is generated between the bridge upper structure beam and the bridge lower structure bent cap, the traditional lead rubber support improves the damping performance of the rubber support by inserting a lead core into the center of the common laminated rubber support, the plastic deformation of hysteresis damping generated by the lead core absorbs earthquake energy and provides horizontal restoring force through rubber, but the deformation capacity is limited, the lead rubber support is sheared when the earthquake generates larger displacement, and the energy consumption and limiting requirements are difficult to meet only by virtue of the lead rubber support; in addition, the earthquake action has unpredictability, and the energy-consumption components with fixed directions are difficult to adapt to the scene of changeable earthquake action.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides an anchor cable type energy consumption device and a bridge, wherein an anchor cable is used for establishing connection between an upper structure and a lower structure of the bridge, providing a damping effect, resisting vibration in an uncertain direction of an earthquake by using flexibility of the anchor cable, driving an internal energy consumption shaft to rotate by an anchor cable pulling roller, realizing cooperative energy consumption of a plurality of energy consumption shafts by meshing a sun gear with a planetary gear, increasing displacement in the energy consumption process, and meeting the requirement of larger displacement energy consumption.
The first object of the invention is to provide an anchor cable type energy consumption device, which adopts the following scheme:
the steel box is sleeved with a base box in a sliding way, and damping liquid is filled in the steel box;
the winding drum is arranged in the steel box through a winding drum shaft, and the winding drum shaft is matched with a sun gear;
the energy consumption shafts are provided with helical blades, are circumferentially distributed around the winding drum, are respectively arranged in the steel box, are matched with planetary gears, and are meshed with the sun gear for transmission;
an anchor cable wound on the drum; in the sliding direction of the steel box, one end of the anchor cable extends out of the base box and is connected with the bent cap anchor.
Further, a ratchet mechanism is matched between the winding drum and the winding drum shaft for unidirectional transmission, and a torsion spring is additionally matched between the winding drum and the winding drum shaft, so that the rotation direction of the winding drum is the same as the unidirectional transmission direction of the winding drum when the torsion spring is compressed.
Further, the bottom plate of the steel box and the bottom plate of the base box are respectively provided with holes for the anchor cable to pass through, the holes are positioned on the vertical central line of the steel box and the vertical central line of the base box, the holes of the base box are used as guide outlets, and one end facing the outer side is smoothly rounded.
Further, the spool shaft is provided with a first shaft section and a second shaft section, the first shaft section and the second shaft section are two shaft sections which are bounded by the spool in the axial direction of the spool shaft, sun gears are respectively matched with the first shaft section and the second shaft section, and planetary gears which are correspondingly matched with the sun gears on the spool shaft are arranged on the energy dissipation shafts.
Further, the two ends of the winding drum shaft and the two ends of the energy dissipation shaft are respectively arranged on the inner wall of the steel box through bearings, four energy dissipation shafts are distributed at four corners corresponding to the vertical rectangular section of the steel box, and the spiral blades can receive damping action of damping fluid flowing back from the direction of the inner wall of the steel box.
Further, a liquid-gas spring is arranged between the bottom plate of the steel box and the bottom plate of the base box, a piston shell and a piston block are in sliding fit, a first liquid cavity filled with damping liquid is formed between the piston shell and the piston block, the piston block is provided with a piston cavity, an inner partition plate is in sliding fit in the piston cavity, the piston cavity is divided into an air cavity and a second liquid cavity, and the second liquid cavity is communicated with the first liquid cavity through a damping liquid hole formed in the piston shell.
Further, the piston shell receives the extrusion action of the steel box, so that the piston shell can move along the movement direction of the steel box; the blade is arranged in the damping fluid hole.
Further, the sliding surfaces of the steel box and the base box are provided with one-way damping mechanisms, a reset spring is connected between the top plate of the steel box and the top plate of the base box, and the reset spring applies a reset action to the steel box in the moving direction of the steel box.
A second object of the present invention is to provide a bridge utilizing an anchor line type energy consuming device as described in the first object.
Further, a plurality of anchor cable energy dissipation devices are connected between the upper structure end diaphragm beam and the lower structure cover beam of the bridge, wherein the base box is arranged in the upper structure end diaphragm beam, and the cover beam anchors are arranged in the cover beam.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) The flexible cable is different from the problem that the deformation capability of the energy-consuming components is poor and shearing is easy to cause when the cable resists the earthquake action in the prior art, the cable is utilized to establish the connection between the bridge upper structure and the bridge lower structure and provide damping action, the flexible cable can resist the vibration of the earthquake in an uncertain direction, the cable pulling drum drives the internal energy-consuming shaft to rotate, the sun gear is meshed with the planetary gear to realize the cooperative energy consumption of a plurality of energy-consuming shafts, the displacement in the energy consumption process is increased, and the larger displacement energy consumption requirement is met.
(2) The traditional rigid and semi-rigid energy consumption and limiting parts are replaced by flexible anchor cables, so that the common problem that the steel anchor bolt rod, the lead core rubber support and the like are sheared along the upper section of the bent cap under the reciprocating earthquake action is avoided, and the reliability of the limiting function of the whole device is improved.
(3) The winding drum and the winding drum shaft adopt a ratchet mechanism with unidirectional transmission, and when the anchor cable is rewound and reset, the torsion spring directly drives the winding drum to rotate without driving the energy consumption shaft to rotate, so that the reset difficulty is reduced; meanwhile, a one-way friction plate is matched with friction teeth to serve as a one-way damping mechanism between the steel box and the base box, friction damping action is provided to assist in energy consumption when the steel box moves and consumes energy, and when the steel box resets, the reset spring drives the steel box to move back without overcoming the action of the one-way friction plate again, so that reset difficulty is reduced, and reset recycling of the energy consumption device is facilitated.
(4) The distribution positions of the energy consumption shaft and the winding drum shaft are specially configured to form a surrounding structure, and the energy consumption shaft is positioned at the angular position of the vertical section of the steel box, so that when the energy consumption shaft is acted by the damping liquid in situ, the energy consumption shaft is also acted by the damping liquid which is disturbed and then impacts the inner wall of the steel box to flow back, and the damping effect of the energy consumption shaft is improved.
(5) The hydraulic and pneumatic spring is designed in the base box, the movement of the steel box is blocked in the process of the movement energy consumption of the steel box, an energy consumption effect is formed, the anchor cable traction winding drum drives the energy consumption shaft to serve as a primary energy consumption effect, unidirectional friction between the steel box and the base box serves as a secondary energy consumption effect, the hydraulic and pneumatic spring serves as a tertiary energy consumption effect in the compression process, the damping effect in the extension process of the anchor cable is cooperatively realized, the bridge displacement is limited, and the anchor cable type multistage energy consumption device is formed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic structural diagram of an anchor rope-type energy dissipating device according to embodiments 1 and 2 of the present invention.
Fig. 2 is a schematic cross-sectional view at B-B in fig. 1.
Fig. 3 is a schematic cross-sectional view at A-A in fig. 1.
Fig. 4 is a schematic cross-sectional view at C-C in fig. 1.
Fig. 5 is a schematic view of the liquid-gas spring in embodiments 1 and 2 of the present invention.
Fig. 6 is a schematic view of the mandrel-engaging mandrel shaft of embodiments 1 and 2 of the present invention.
Fig. 7 is a schematic view of a spool shaft engaging ratchet mechanism in embodiments 1 and 2 of the present invention.
Fig. 8 is a schematic view of the anchor line type energy dissipation device of embodiments 1 and 2 of the present invention mounted on the upper structure end diaphragm and the capping beam.
Wherein, 1-a base box; 2-a steel box; 3-a return spring; 4-a one-way friction plate; 5-friction teeth; 6-a liquid-gas spring; 61-a piston housing; 62-piston block; 63-an inner separator; 64-guide rod; 65-air cavity; 66-a first liquid chamber; 67-a second liquid chamber; 68-damping fluid holes; 69-blades; 7-a pilot outlet; 8-anchor cables; 9-capping beam anchors; 10-winding drum; 101-a third bearing; 102-a ratchet mechanism; 1021-ratchet; 1022-pawl; 1023-pawl spring; 103-torsion springs; 11-a spool shaft; 12-a first bearing; 13-energy consumption shaft; 14-a second bearing; 15-a drive gear set; 151-sun gear; 152-planetary gears; 16-damping fluid; 17-superstructure end spreader beams; 18-a capping beam; 19-plate rubber support; 20 support pad.
Detailed Description
Example 1
In an exemplary embodiment of the present invention, an anchor line energy consuming device is provided as shown in fig. 1-8.
The anchor cable type energy dissipation device is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the anchor cable type energy consumption device mainly comprises a base box 1, a steel box 2, a winding drum 10, an energy consumption shaft 13, anchor cables 8 and a liquid gas spring 6, wherein the steel box 2 is arranged in the base box 1 in a sliding manner, the winding drum 10 is arranged in the steel box 2 through a winding drum shaft 11, the energy consumption shaft 13 is also arranged in the steel box 2, the winding drum shaft 11 and the energy consumption shaft 13 can rotate around the axes of the winding drum shaft 11 and the energy consumption shaft 13 respectively, and spiral blades are arranged on the energy consumption shaft 13; the drum shaft 11 and the energy consumption shaft 13 are linked through a transmission gear set 15, damping liquid 16 is filled in the steel box 2, and when the drum 10 rotates, the spiral blades can be driven to disturb the damping liquid 16 to form a damping effect, so that the rotation of the drum 10 is resisted; one end of the anchor cable 8 is wound on the winding drum 10, the other end of the anchor cable is led out of the base box 1, and when the anchor cable 8 is pulled, the anchor cable is transferred to the winding drum 10 to drive the winding drum 10 to rotate, so that energy consumption is realized; the liquid-gas spring 6 is also arranged in the base box 1, and energy consumption is realized by combining the steel box 2. For convenience of description, when the anchor cable energy dissipation device is in an operating state, that is, when the anchor cable 8 is pulled by an external force to drive the reel 10 to rotate, the state of dissipating energy is called a forward rotation state of the reel 10, and vice versa. The anchor rope 8 is wound on a winding drum 10; in the sliding direction of the steel box 2, one end of the anchor cable 8 extends out of the base box 1 and is connected with the bent cap anchor 9.
Wherein, as shown in fig. 8, the base box 1 is disposed in the upper structural end spreader 17 and the bent cap anchors 9 are disposed in the bent cap 18.
As shown in fig. 2, the transmission gear set 15 includes a sun gear 151 and a planetary gear 152 which are meshed, a plurality of energy dissipation shafts 13 are distributed circumferentially around the winding drum 10 and are respectively installed in the steel box 2, the winding drum shaft 11 is matched with the sun gear 151 as a driving gear, the energy dissipation shafts 13 are matched with the planetary gear 152 as driven gears, and the planetary gear 152 is meshed with the sun gear 151 for transmission.
The distribution positions of the energy consumption shaft 13 and the drum shaft 11 are configured, as shown in fig. 3, the drum shaft 11 is rotationally connected with the drum 10 through a third bearing 101, two ends of the drum shaft 11 and two ends of the energy consumption shaft 13 are respectively arranged on the inner wall of the steel box 2 through bearings, the two ends of the drum shaft 11 are matched with first bearings 12, and the first bearings 12 are arranged on blind holes formed in the inner wall of the steel box 2; the two ends of the energy dissipation shaft 13 are matched with second bearings 14, and the second bearings 14 are arranged on blind holes formed in the inner wall of the steel box 2.
The energy dissipation shaft 13 is spaced from the spool shaft 11, and in order to ensure the stability of the transmission, the energy dissipation shaft 13 may be distributed parallel to the axis of the spool shaft 11. The spiral directions of the spiral blades of the two energy dissipation shafts 13 with the same height are opposite, so that the flows of the damping liquid 16 are opposite, the impact actions are mutually offset, and the energy dissipation effect is improved.
As shown in fig. 2, the energy consumption shafts 13 are distributed at four corners corresponding to the vertical rectangular cross section of the steel box 2, so that gaps between the spiral blades and the inner wall of the steel box 2 are maintained, collision interference is avoided, and the spiral blades can receive damping action of the damping liquid 16 flowing back from the direction of the inner wall of the steel box 2.
In addition, the steel box 2 is integrally of a rectangular box body structure, the section in the vertical direction is rectangular, the diameter of the sun gear 151 is larger than that of the planet gears 152, and the transmission ratio of the sun gear 151 to the planet gears 152 is larger than 1, so that the energy consumption speed reducer is formed. Meanwhile, the small-diameter planetary gears 152 are arranged at the angular position of the steel box 2, so that the space in the steel box 2 can be fully utilized, and the distribution positions of the anchor cables 8 are avoided.
As shown in fig. 6 and 7, the spool shaft 11 has a first shaft section and a second shaft section, which are two shaft sections bounded by the spool 10 in the axial direction of the spool shaft 11, and sun gears 151 are respectively fitted to the first shaft section and the second shaft section so that torque on the spool shaft 11 can be uniformly transmitted to both ends; the energy consumption shaft 13 is provided with a planetary gear 152 correspondingly matched with the sun gear 151 on the drum shaft 11, so that the stress on the two ends of the drum shaft 11 is uniform, and the stability of the structural movement in the energy consumption transmission process is improved.
After the winding drum 10 rotates forward to release the winded anchor rope 8 to consume energy, the winding drum 10 needs to be reversed to rewind the anchor rope 8 in the resetting process, and in the traditional resetting mode, the resetting process is completely opposite to the energy consumption process, so that larger acting force is still required in the resetting process, the resetting time is long, the resetting difficulty is high, and the problem that the resetting effect is poor and the subsequent energy consumption effect is influenced also exists.
Based on this, in this embodiment, a ratchet mechanism 102 is engaged between the drum and the drum shaft 11 to drive in one direction, and a torsion spring 103 is engaged between the drum 10 and the drum shaft 11, so that the rotation direction of the drum 10 is the same as the direction of the unidirectional drive of the drum 10 when the torsion spring 103 is compressed.
As shown in fig. 7, in the ratchet mechanism 102, a ratchet 1021 is attached to a spool shaft 11, a ratchet tooth is provided on the outer circumference of the ratchet 1021, a pawl 1022 is connected to the spool 10, the pawl 1022 is engaged with the ratchet tooth, and a pawl spring 1023 is connected to the pawl 1022 so that the pawl 1022 can abut against the ratchet tooth.
When the winding drum 10 is in an energy consumption state, the pawl 1022 is meshed with the ratchet under the action of the pawl spring 1023, so that the winding drum 10 drives the winding drum shaft 11 to rotate together; when in a reset state, the winding drum 10 is reversed under the action of the torsion spring 103, the ratchet is driven by the rotation of the winding drum 10 instead of meshing with the ratchet, the winding drum shaft 11 is not rotated by the rotation of the winding drum 10, and the resistance of the winding drum 10 for winding the anchor cable 8 during reset is greatly reduced.
When the winding drum 10 rotates forward to release the anchor cable 8, the ratchet mechanism 102 drives unidirectionally, and the torsion spring 103 is compressed to store energy until the winding drum 10 is completely released; during resetting, the torsion spring 103 after energy storage drives the winding drum 10 to rotate reversely, and the winding drum shaft 11 does not rotate due to the action of the ratchet mechanism 102, so that repeated driving of the rotating blades is avoided, resetting resistance is reduced, and resetting effect is improved.
As shown in fig. 1 and 2, holes for the anchor cable 8 to pass through are respectively formed in the bottom plate of the steel box 2 and the bottom plate of the base box 1, the holes are located on the vertical central line of the steel box 2 and the vertical central line of the base box 1, the holes of the base box 1 serve as guide outlets 7, one end facing the outer side is smoothly rounded, the scratch problem of the sharp edge line on the anchor cable 8 is reduced, and meanwhile the clamping stagnation problem can be reduced.
As shown in fig. 1, the sliding surfaces of the steel box 2 and the base box 1 are provided with a unidirectional damping mechanism, a return spring 3 is connected between the top plate of the steel box 2 and the top plate of the base box 1, and the return spring 3 applies a return action to the steel box 2 in the moving direction of the steel box 2.
Correspondingly, the base box 1 and the steel box 2 are in sliding fit, after the anchor cable 8 wound on the winding drum 10 is completely released, the traction effect reaches a first specific value, the anchor cable 8 is fixedly connected with the winding drum 10, and the whole traction steel box 2 slides relative to the base box 1 along with the continuous action of external force on the anchor cable 8; the unidirectional damping mechanism provided between the base box 1 and the steel box 2 should have the energy-consuming capacity to adapt to this first specific value, in other words, the unidirectional damping mechanism should have a relatively large initial friction force, keeping the steel box 2 and the base box 1 from sliding relative to each other until the anchor cable 8 on the reel 10 is completely released.
Specifically, the unidirectional damping mechanism comprises a unidirectional friction plate 4 arranged on the inner wall of the base box 1 and friction teeth 5 arranged on the outer wall of the steel box 2, the friction teeth 5 are contacted with the unidirectional friction plate 4, damping is provided when the distance between the top plate of the base box 1 and the top plate of the steel box 2 is increased, and damping is not provided when the distance between the top plate of the base box 1 and the top plate of the steel box is reduced.
After the anchor cable 8 on the winding drum 10 is completely released, the steel box 2 moves downwards, the reset spring 3 at the top of the steel box 2 is pulled to accumulate elastic potential energy, and meanwhile, friction teeth 5 on the outer wall of the steel box 2 and the one-way friction plate 4 on the inner wall of the base box 1 generate friction, so that secondary energy consumption is realized; when the relative displacement between the upper structure end diaphragm beam 17 and the cover beam 18 is reduced, the return spring 3 works to drive the steel box 2 to move upwards and return relative to the base box 1. As shown in fig. 4 and 5, the liquid-gas spring 6 installed in the base case 1 serves as a three-stage energy consumption structure. A liquid-gas spring 6 is arranged between the bottom plate of the steel box 2 and the bottom plate of the base box 1, and is a piston shell 61 and a piston block 62 which are in sliding fit.
A first liquid chamber 66 filled with damping liquid 16 is formed between the piston housing 61 and the piston block 62, the piston block 62 is provided with a piston chamber which is slidably matched with the inner partition 63 and divides the piston chamber into an air chamber 65 and a second liquid chamber 67, and the second liquid chamber 67 is communicated with the first liquid chamber 66 through a damping liquid 16 hole 68 formed in the piston housing 61.
In order to realize stable sliding of the inner partition 63, a guide rod 64 arranged along the target sliding direction of the inner partition 63 is provided in the piston chamber, and the guide rod 64 is penetrated through a guide hole on the inner partition 63.
The piston shell 61 receives the extrusion action of the steel box 2, so that the piston shell 61 can move along the movement direction of the steel box 2; a blade 69 is mounted in the orifice 68 of the damping fluid 16.
After the secondary energy consumption is completed, if the anchor cable 8 is further pulled under the action of external force, the steel box 2 moves downwards further to be in contact with the liquid-gas spring 6. The piston block 62 is pressed downwards under the action of the steel box 2 to form relative motion with the piston shell 61, so that damping liquid 16 in the first liquid cavity 66 flows to the second liquid cavity 67 through the damping liquid 16 hole 68, and the paddle 69 in the damping liquid 16 hole 68 is driven to rotate for energy consumption, thereby realizing three-level energy consumption. Corresponding stoppers may also be provided to avoid damage beyond the maximum displacement position.
At the same time, the inner diaphragm 63 moves upward along the guide rods 64, presses the air chamber 65, generates a restoring force, and drives the piston block 62 to return upward when the relative displacement of the upper structural end diaphragm 17 and the cap beam 18 decreases.
The damping fluid 16 in this embodiment may be a viscous damping fluid.
It should be noted that, in this embodiment, the bent cap anchor 9 adopts a claw-type anchor device, so as to improve the anchoring capability, the inside of the steel box 2 is filled with viscous damping liquid 16, the end surfaces of the base box 1 and the steel box 2 are square, and the wall thickness of the base box 1 and the steel box 2 can be selected to be 3mm-5mm; it will be appreciated that in other embodiments, the wall thicknesses of the base box 1 and the steel box 2 may be adjusted according to the requirements, so as to meet the actual application requirements.
Example 2
In another exemplary embodiment of the present invention, as shown in fig. 1-8, a bridge is provided.
With the anchor line type energy consuming device as in embodiment 1, a plurality of anchor line type energy consuming devices are connected between the upper structure end diaphragm beam 17 and the capping beam 18 of the lower structure of the bridge, wherein the base box 1 is disposed in the upper structure end diaphragm beam 17, and the capping beam anchors 9 are disposed in the capping beam 18.
As shown in fig. 8, a plate-type rubber support 19 is further provided between the upper structure end diaphragm 17 and the lower structure cover beam 18, one end of the plate-type rubber support 19 is connected to the upper structure end diaphragm 17, and the other end is arranged on a support cushion 20 of the cover beam 18.
The connection between the bridge upper structure and the bridge lower structure is established by using the anchor cable 8, a damping effect is provided, vibration in an uncertain direction of an earthquake can be resisted by using the flexibility of the anchor cable 8, the anchor cable 8 pulls the winding drum 10 to drive the inner energy consumption shafts 13 to rotate, the sun gear 151 is meshed with the planetary gears 152 to realize cooperative energy consumption of the plurality of energy consumption shafts 13, the displacement in the energy consumption process is increased, and the requirement of larger displacement energy consumption is met. The liquid-gas spring 6 is designed in the base box 1, the movement of the steel box 2 is blocked in the process of energy consumption of the movement of the steel box 2, an energy consumption effect is formed, the anchor cable 8 pulls the winding drum 10 to drive the energy consumption shaft 13 to serve as a primary energy consumption effect, unidirectional friction between the steel box 2 and the base box 1 serves as a secondary energy consumption effect, the liquid-gas spring 6 serves as a tertiary energy consumption effect in the compression process, the damping effect in the extension process of the anchor cable 8 is cooperatively realized, the bridge displacement is limited, and the anchor cable type multistage energy consumption device is formed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An anchor cable energy dissipation device, comprising:
the steel box is sleeved with a base box in a sliding way, and damping liquid is filled in the steel box;
the winding drum is arranged in the steel box through a winding drum shaft, and the winding drum shaft is matched with a sun gear;
the energy consumption shafts are provided with helical blades, are circumferentially distributed around the winding drum, are respectively arranged in the steel box, are matched with planetary gears, and are meshed with the sun gear for transmission;
an anchor cable wound on the drum; in the sliding direction of the steel box, one end of the anchor cable extends out of the base box and is connected with the bent cap anchor;
the spool shaft is provided with a first shaft section and a second shaft section, the first shaft section and the second shaft section are two shaft sections which are bounded by a spool in the axial direction of the spool shaft, sun gears are respectively matched with the first shaft section and the second shaft section, and planetary gears which are correspondingly matched with the sun gears on the spool shaft are arranged on the energy consumption shafts; the diameter of the sun gear is larger than that of the planet gears, so that the transmission ratio of the sun gear and the planet gears is larger than 1, and the energy consumption speed reducer is formed;
the damping device is characterized in that a liquid-gas spring is arranged between the bottom plate of the steel box and the bottom plate of the base box, a piston shell and a piston block are in sliding fit, a first liquid cavity filled with damping liquid is formed between the piston shell and the piston block, the piston block is provided with a piston cavity, an inner partition plate is in sliding fit in the piston cavity, the piston cavity is divided into an air cavity and a second liquid cavity, and the second liquid cavity is communicated with the first liquid cavity through a damping liquid hole formed in the piston shell.
2. The anchor cable energy dissipation device of claim 1, wherein a ratchet mechanism is matched between the winding drum and the winding drum shaft for unidirectional transmission, and a torsion spring is additionally matched between the winding drum and the winding drum shaft, and the rotation direction of the winding drum is the same as the unidirectional transmission direction of the winding drum when the torsion spring is compressed.
3. The anchor cable energy consumption device according to claim 2, wherein the bottom plate of the steel box and the bottom plate of the base box are respectively provided with an opening through which the anchor cable passes, the openings are positioned on the vertical center line of the steel box and the vertical center line of the base box, the opening of the base box is used as a guiding outlet, and one end facing the outer side is smoothly rounded.
4. The anchor cable energy dissipation device according to claim 1, wherein two ends of the drum shaft and two ends of the energy dissipation shaft are respectively arranged on the inner wall of the steel box through bearings, four energy dissipation shafts are distributed at four angular positions corresponding to the vertical rectangular section of the steel box, and the helical blades can receive the damping action of the damping liquid flowing back from the direction of the inner wall of the steel box.
5. The anchor cable energy dissipation device of claim 1, wherein the piston housing receives the extrusion of the steel box to enable the piston housing to move in the direction of movement of the steel box; the blade is arranged in the damping fluid hole.
6. The anchor cable energy dissipation device of claim 1, wherein the sliding surfaces of the steel box and the base box are provided with a unidirectional damping mechanism, a return spring is connected between the top plate of the steel box and the top plate of the base box, and the return spring applies a return action to the steel box in the moving direction of the steel box.
7. A bridge comprising the anchor line energy consuming device of any one of claims 1-6.
8. The bridge of claim 7, wherein a plurality of anchor line energy consuming devices are connected between the upper structural end rails and the lower structural capping beams of the bridge, wherein the foundation boxes are disposed within the upper structural end rails and the capping beam anchors are disposed within the capping beams.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311674645.9A CN117364616B (en) | 2023-12-08 | 2023-12-08 | Anchor rope type energy consumption device and bridge |
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| CN202311674645.9A CN117364616B (en) | 2023-12-08 | 2023-12-08 | Anchor rope type energy consumption device and bridge |
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| JP2000257020A (en) * | 1999-03-08 | 2000-09-19 | Honshu-Shikoku Bridge Authority | Rope winding device for damping vibration of suspension bridge hanger rope |
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| CN117364616A (en) | 2024-01-09 |
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