CN202347435U - Inhaul cable-spring shock mount - Google Patents

Abstract

The utility model relates to an inhaul cable-spring shock mount. The shock mount comprises an upper base plate, a lower base plate, a baffle, buffer boards, an intermediate plate, a wearing plate, an inhaul cable, a shearing bolt, a return spring and bolt automatic dislocation devices, wherein the shearing bolt is arranged on the lower base plate, the first buffer board, the intermediate plate, the wearing plate, the second buffer board and the upper base plate in a penetrating way; the upper end of the shearing bolt extends out of the upper base plate and is connected with one bolt automatic dislocation device, and the lower end of the shearing bolt extends out of the lower base plate and is connected with the other bolt automatic dislocation device; the return spring is sleeved on the periphery of a mount body, upper and lower ends of the return spring are respectively fixed on the upper base plate and the lower base plate; and two ends of the inhaul cable are respectively connected with the upper base plate and the lower base plate. According to the inhaul cable-spring shock mount, energy generated in an earthquake can be consumed, when horizontal displacement exceeds limit, the return spring, the baffle and the inhaul cable are stressed commonly, and are prevented from enduring an impact shearing effect independently, so that the shock resistance is reinforced; and the return spring enables the upper and lower base plates to move toward the central balanced position to achieve a self-return function by virtue of the characteristics of the return spring.

Description

Drag-line-spring shock absorption bearing

Technical field

The utility model belongs to civil engineering, earthquake engineering technical field, is specifically related to a kind of with power consumption, novel vibration absorption and isolation support spacing, that reset and combine certainly under the geological process: be particularly related to a kind of drag-line-spring shock absorption bearing.

Background technology

In recent decades, vibration absorption and isolation support subtracts the important measures of shock insulation as bridge, has obtained increasing attention, and has obtained great development.Pot rubber bearing, lead core rubber support, FPS (friction pendulum hammer body system) have progressively obtained using widely, and become the main flow of domestic and abroad bridge bearing.In several kinds of vibration absorption and isolation supports, pot rubber bearing is when meeting with earthquake or great vibratility and impact, and the horizontal movement between the upper and lower seat board can not get efficient buffer, and support displacement is excessive; The lead core rubber support energy dissipation capacity is strong; The order of seats internal force that temperature, the deformation of creep such as creep cause is less; But the cutting performance of bearing receives the influence of vertical load bigger; And along with the increase of lead for retractable pencil, the bearing automatic recovery ability weakens gradually, can not in the earthquake motion with multiple spectra effect, effectively subtract shock insulation; Strong, the friction energy-dissipating stable performance of the automatic recovery ability of FPS (friction pendulum hammer body system), but in the process of friction energy-dissipating, can cause the vertical displacement of beam-ends and produce time internal force.

All deficiencies in view of above-mentioned dissimilar bearings existence; We are on the basis of common benzvalene form aseismatic bearing, ball steel support; In conjunction with a kind of elastic cable device between top beam body and bottom bridge pier that in the large bridge seismic design, often adopts at present, design has formed a kind of inhaul cable damping support saddle.

China utility model patent ZL200920212009.3 has announced a kind of inhaul cable damping support saddle.This technical scheme has adopted shearing bolt on the one hand; Make bearing under general mode of occupation, show as the form of structure of fixed bearing; When larger earthquake takes place, when the horizontal force between seat board up and down during greater than the shear strength of shearing bolt, the sheared edge fracture of shearing bolt; When consuming the part seismic energy, support style changes freely movable bearing into; On the other hand then between upper and lower seat board anchoring, after shearing bolt fracture, be shifted at upper and lower seat board and play the buffer limit effect when excessive with guy of twisted steel cable, the restriction bearing up and down the relative displacement between the seat board within a controlled scope.

But such scheme still comes with some shortcomings, and drag-line leaves certain free slack when design; When shake takes place doughtily; Shearing bolt is cut off, and bearing seat board up and down begins to take place relative displacement, after displacement surpasses the drag-line free path; Drag-line begins to play a role, and the restriction bearing relative displacement between the seat board up and down is excessive; In such cases, bearing can produce certain remaining displacement after violent earthquake, and promptly bearing when therefore after shake, repairing, must use additive method that bearing is adjusted on the vertical line of center not on a plumb line in the seat board center up and down.Therefore, be necessary the bearing in the prior art is done further to improve.

Summary of the invention

The purpose of the utility model be to provide a kind of not only can be through the sliding friction earthquake energy under geological process; Reduce the effect of earthquake, and can cushion and limit the horizontal movement between the upper and lower seat board of severe earthquake action undersetting effectively and have drag-line-spring shock absorption bearing from reset function to structure.

For reaching above purpose, the solution that the utility model adopts is: the advantage of inhaul cable damping support saddle the time, between the seat board back-moving spring is set up and down at bearing before absorbing.The pedestal of bearing places in the ring of this back-moving spring, and purpose is when making bearing up and down relative horizontal movement taking place seat board, and back-moving spring promptly deforms, and utilizes its firm elasticity for resetting of top girder construction restoring force to be provided.

Under geological process, bearing can slide, and through friction energy-dissipating, back-moving spring can provide seat board up and down that restoring force makes bridge pad in the mechanism of earthquake with after the geological process, to reset effectively and do not depart from basically when bearing departs from; Simultaneously under geological process; The relative displacement up and down that bearing two ends block and drag-line will limit bearing (change in displacement ability can according to require design) within certain scope; Effectively prevent fall this common seismic damage form of beam of geological process underbeam body; And because the existence of drag-line and block; Back-moving spring and up and down the impact force between the seat board effectively cushioned, thereby ensure the traffic capacity of this lifeline engineering after earthquake disaster, sound assurance is to the work such as rescue in disaster area.

In view of the above; Drag-line-spring shock absorption bearing that the utility model proposes; Comprise that having pedestal and pedestal has following seat board, the upper base plate in a chamber and be stacked and placed on first buffer board, intermediate plate, wearing plate and second buffer board in the said seat chamber successively; Also include shearing bolt, drag-line, back-moving spring, block and two bolts device of dislocating automatically; Each anchoring of vertical down either side of said upper base plate has one group of block that vertically is provided with, and its height should be able to guarantee when shock mount is shifted, can suitable contacting be arranged with following seat board; Said shearing bolt passes down seat board, first buffer board, intermediate plate, wearing plate, second buffer board and upper base plate successively; Its upper end leans out the device connection of dislocating automatically of the 6th bolt hole and one of them bolt on the upper base plate; The lower end leans out down first bolt hole and another bolt on the seat board device of dislocating automatically and connects; And the middle part at shearing bolt constitutes sheared edge, and an end of said drag-line and upper base plate connect, and the other end connects with following seat board; Said back-moving spring is placed on around the pedestal, and between the seat board, the upper base plate bottom is fixed in the upper end about placing, and seat board top down is fixed in the lower end.

In the utility model, said back-moving spring can be that the spring external diameter of top and the bottom equates, also can be that the upper springs external diameter is little, the lower springs external diameter is big, can also be that the upper springs external diameter is big, the lower springs external diameter is little.

In the utility model, it can be 1-99 root spring that the number of springs of said back-moving spring needs according to mechanics, and its distribution form can be nested with in horizontal plane each other, also can be stacked each other in upright plane, and change can be arranged according to design demand.

In the utility model, said back-moving spring can be processed by Fine Steel Casting iron, alloy steel or non-ferrous alloy etc.

In the utility model, said drag-line can design the N group as required, is illustrated as four groups, and the radical of every group of drag-line is the 1-99 root, and every drag-line is processed by steel strand, high strength steel tow or carbon fiber.

In the utility model, the shape of said upper base plate, following seat board, block is cuboid, and four bights of upper base plate respectively offer one group of second drag-line hole, and corresponding, four bights of following seat board respectively offer one group of first drag-line hole.Each is connected the upper end of four groups of drag-lines with the corresponding second drag-line hole, and each is connected the lower end with the corresponding first drag-line hole.The quantity in the said first drag-line hole, the second drag-line hole equates with the quantity of drag-line.

In the utility model, an end of every drag-line is furnished with first positioning cap on said four groups of drag-lines, and the other end is furnished with second positioning cap, first positioning cap hold with the first drag-line hole in, second positioning cap then hold with the second drag-line hole in.

In the utility model, the said first drag-line hole, the second drag-line hole are the reducing hole.

In the utility model, the two ends of said shearing bolt all have the connection screw thread, and bolt is dislocated device automatically through this connection screw thread and shearing bolt connection.

In the utility model, the said bolt device of dislocating automatically comprises nut, spring and packing ring, and spring and packing ring are nested with on shearing bolt, and nut spins and cooperates with connecting screw thread, and spring is between nut and packing ring.

In the utility model, the baffle plate inboard is bonded with the 3rd buffer board, and the 3rd buffer board is a rubber tile, is bonded in the block inboard respectively through macromolecule polymeric material.

In the utility model, be provided with sealing ring between said first buffer board and the intermediate plate, said first buffer board is a rubber tile, and said intermediate plate constitutes a slide plate chamber towards a surface of said wearing plate, and intermediate plate is a steel plate.

In the utility model, said wearing plate is located in the described slide plate chamber, and wearing plate is polyfluortetraethylene plate or high molecular abrasion-proof plate.

In the utility model, said second buffer board is a corrosion resistant plate.

In the utility model, during use, Ben Lasuo-spring shock absorption bearing is fixed by bolt that passes down four bight bolts hole of seat board and the built-in fitting on the bridge pier.

The advantage of the technical scheme that the utility model provides:

1) given full play to the advantage of the disclosed a kind of inhaul cable damping support saddle of utility model patent ZL200920212009.3; Through setting up back-moving spring between the seat board up and down at bearing, make bearing under normal mode of occupation, show as the form of structure of fixed bearing, yet when earthquake takes place; When upper base plate or when down the horizontal force of seat board is greater than the shear strength of shearing bolt; Shearing bolt is cut off at the sheared edge place, and one side is able to consume the part seismic energy and protects pontic, and bearing is made the transition; Become freely movable bearing by fixed bearing, it is stressed to reduce bearing.

2) simultaneously; Because bearing seat board up and down begins the relative slip of occurred level direction; Back-moving spring change about being arranged between the seat board deforms, and back-moving spring relies on self-characteristic, for bearing recenters additional pulling force is provided; Seat board moves towards the equilbrium position, center about making, and reaches from reset function.

3) when the bearing vertical shift surpassed predetermined permissible value, back-moving spring, the vertical block in front and back and four groups of drag-lines all participated in limiting the bearing vertical shift.Through the position of vertical block and the length and the rigidity of drag-line before and after the appropriate design; The relative horizontal movement of top and the bottom structure is controlled in reasonable, the controlled limit, had both avoided owing to the excessive situation that causes the excessive inefficacy of camber of spring of horizontal movement the percussion that has produced when having reduced block generation position-limiting action again; Thereby reduce dynamic magnification factor; Reduce the seismic response of structure, improved the spacing ability of bearing, strengthened shock resistance.

4) because the tension force and the deflection of spring are linear change, there are not other uncertain factors, so convenient design calculation, and make Theoretical Calculation consistent easily with actual effect.

5) through back-moving spring, block and the common limiting displacement of drag-line, make the bearing displacement within certain scope, thereby effectively prevent to fall under the geological process this common earthquake disaster of beam.

6) bearing up and down can effectively be controlled three direction displacement through the connection of back-moving spring and drag-line between the seat board, can improve especially have that vertical combination vibration causes in length and breadth to spacing failure phenomenon.

In a word, the utility model is applicable on the building of urban viaduct, road bridge, railway bridge and various large-scale suspension frame structures and so on, plays cushioning effect.

Description of drawings

Fig. 1 is the horizontal enforcement package assembly diagram of the utility model.

Fig. 2 implements the package assembly diagram longitudinally for the utility model.

Fig. 3 is the sectional view of the utility model.

Label among the figure: 1 is following seat board, and 2 is upper base plate, and 3 is first buffer board, and 4 is intermediate plate, and 5 is wearing plate, and 6 is second buffer board; 7 is shearing bolt, and 8 is block, and 9 are the bolt device of dislocating automatically, and 10 be the slide plate chamber, and 11 is the 3rd buffer board, and 12 are the connection screw thread; 13 is drag-line, and 14 is that first positioning cap, 15 is the first drag-line hole, and 16 is that second positioning cap, 17 is the second drag-line hole, and 18 is sealing ring, and 19 is sheared edge, and 20 is the seat chamber; 21 is first bolt hole, and 22 is second bolt hole, and 23 is the 3rd bolt hole, and 24 is the 4th bolt hole, and 25 is the 5th bolt hole; 26 is the 6th bolt hole, and 27 is the upper base plate bolt hole, and 28 is the upper base plate bolt, and 29 are following seat board bolt hole, and 30 are following seat board bolt; 31 is nut, and 32 is spring, and 33 is packing ring, and 34 is back-moving spring, and 35 is pedestal.

The specific embodiment

For the auditor that the makes Patent Office especially public can be expressly understood the technical spirit and the beneficial effect of the utility model more, the applicant will be below combines accompanying drawing to elaborate with the mode of embodiment.

Embodiment 1: ask for an interview Fig. 1, Fig. 2 and Fig. 3; The following seat board 1 of one rectangle; Under user mode, fix with the bridge pier of bridge, respectively offer seat board bolt hole 29 in four bights of following seat board 1 for this reason, using down, seat board bolt 30 will descend seat board 1 and the built-in fitting on the bridge pier to fix.Following seat board 1 towards on the central authorities of a side hollow out the seat chamber 20 that is formed with a ring-type, in this chamber 20, set gradually first buffer board 3, intermediate plate 4, wearing plate 5 and second buffer board 6 from bottom to up.First buffer board 3 is a rubber tile, and intermediate plate 4 is a steel plate, and wearing plate 5 is polyfluortetraethylene plate or high molecular abrasion-proof plate, and second buffer board 6 is a corrosion resistant plate.Wherein, between first buffer board 3 and intermediate plate 4, be provided with sealing ring 18, intermediate plate 4 is formed with a slide plate chamber 10, and wearing plate 5 is positioned at this slide plate chamber 10.

The upper base plate 2 of one rectangle, fixing with the girder bottom surface (the beam body of also claiming bridge) of bridge under user mode, respectively offer a upper base plate bolt hole 27 in four bights of upper base plate 2 for this reason, with upper base plate bolt 28 upper base plate 2 and girder bottom surface are fixed.

Illustrate jointly by Fig. 1 and Fig. 2; Central authorities at following seat board 1 have one first bolt hole 21 (Fig. 3 shows); Central authorities at first buffer board 3 offer one second bolt hole 22 (Fig. 3 shows); Central authorities at intermediate plate 4 offer one the 3rd bolt hole 23; Central authorities at wearing plate 5 offer one the 4th bolt hole 24, offer the 5th bolt hole 25 and offer the 6th bolt hole 26 in the central authorities of upper base plate 2 in the central authorities of second buffer board 6, and aforesaid first bolt hole 21, second bolt hole 22, the 3rd bolt hole 23, the 4th bolt hole 24, the 5th bolt hole 25 and the 6th bolt hole 26 all correspond to each other.Shearing bolt 7 as one of technical essential of the utility model is located on aforesaid first to the 6th bolt hole; Wherein, The upper end of shearing bolt 7 is leaning out the 6th bolt hole 26 back dislocate automatically with pair of bolts one of them bolt in the devices 9 dislocate automatically device 9 and its connection; Specifically: packing ring 33 and spring 32 are nested with on the shearing bolt 7 successively, are rotated with the connection screw thread 12 of nut 31 with shearing bolt 7 ends, aforesaid packing ring 33 contacts with upper base plate 2; The lower end of shearing bolt 7 is leaning out first bolt hole 21 back with another bolt dislocate automatically device 9 and its connection, and bind mode specifically also can be made much of through the signal of Fig. 2 as the description to the connection of the upper end of shearing bolt 7; The middle part of shearing bolt 7 with the constriction state constitute a sheared edge 19, the position of sheared edge 19 is corresponding with aforesaid the 4th bolt hole 24, the 5th bolt hole 25 substantially.

Please continue to see Fig. 1, Fig. 2 and Fig. 3, two of the technical essential of the technical scheme of the utility model is to adopt four groups of drag-lines, because four groups of drag-lines 13 are all identical with the bind mode of upper base plate 2, following seat board 1, therefore select one of which and describes.In the present embodiment, with regard to one group of drag-line 13, it is made up of 1 drag-line.Every drag-line lower end connects with following seat board 1 through first positioning cap 14, the first drag-line hole 15 respectively mutually, and the upper end is passed through second positioning cap 16 respectively, the second drag-line hole 17 connects with upper base plate 2 mutually.

Please continue to see Fig. 1, Fig. 2 and Fig. 3, three of the technical essential of the technical scheme of the utility model is that the employing back-moving spring is that bearing provides restoring force.In the present embodiment, with regard to back-moving spring 34, it is processed by Fine Steel Casting iron, alloy steel or non-ferrous alloy etc.Back-moving spring 34 is placed on around the bearing pedestal 35, places between upper base plate 2 and the following seat board 1, and upper base plate 2 bottoms are fixed in the upper end, and seat board 1 top down is fixed in the lower end,

Block 8 is anchored on the upper base plate 2, and its height should be able to guarantee when the bearing vertical shift, can suitable contacting be arranged with following seat board 1, so that can be successful spacing.The 3rd buffer board 11 is bonded in block 8 inboards with the organic polymer binding material.The length of the position of block 8 and drag-line 13 should be according to bearing upper base plate 2, down the maximum vertical equity displacement that allows of seat board 1 design confirmed, and makes and can play a role jointly at drag-line 13, block 8 and back-moving spring 34.

Under the normal condition before earthquake takes place; Because the effect of shearing bolt 7; Upper base plate 2, following seat board 1 are coupled as one; Thereby make the drag-line-spring shock absorption bearing of the utility model structure show as the form of fixed bearing, promptly by the horizontal movement between the upper and lower seat board of shearing bolt 7 constraint 2, the upper base plate 1.Yet when earthquake took place, aforesaid horizontal force was during greater than the shear strength of the sheared edge 19 of shearing bolt 7; Shearing bolt 7 is just cut off; And taken off by the bolt at two ends device 9 bullets of dislocating automatically, visible, shearing bolt 7 plays the effect of two aspects; The one, can consume the portion of energy that causes upper base plate 2, following seat board 1 horizontal movement that earthquake causes, thus the protection bridge; The 2nd, because shearing bolt 7 breaks off, to have removed upper base plate 2, the constraint of seat board 1 down, the character that makes bearing is multidirectional freely movable bearing transition from previous fixed bearing.Certainly, the power of the sheared edge 19 tolerance fractures of shearing bolt 7 obtains through designing and calculating according to mechanics principle.In addition, after shearing bolt 7 broke off, bearing was to a lateral movement; Back-moving spring 34 deforms, and when shift value surpassed certain design load, four groups of drag-lines 13 began to bear pulling force; And then block 8 contact beginning with following seat board 1 spacing, this moment, back-moving spring 34, drag-line 13 and block 8 were stressed jointly, promptly made bearing both sides block and drag-line, back-moving spring 34 unite spacing; Avoid block 8 effect of being cut that withstands shocks separately, strengthened shock resistance, meanwhile; Back-moving spring 34 relies on the recovery characteristic of self, and upper base plate 2 and following seat board 1 are moved towards the equilbrium position, center, has so just reached the function that resets certainly.

As a kind of conversion of the embodiment of the invention, the bearing that cooperates with back-moving spring 34 devices can adopt pot bearing, spherical bearing, also can adopt other types and index.

As a kind of conversion of the embodiment of the invention, the bearing that cooperates with back-moving spring 34 devices can adopt the said fixed bearing that has shearing bolt 7, also can be set directly in the sliding support.

As another conversion of the embodiment of the invention, the spring external diameter that said back-moving spring 34 can be top and the bottom equates, also can be that the upper springs external diameter is little, the lower springs external diameter is big, can also be that the upper springs external diameter is big, the lower springs external diameter is little.

Another conversion as the embodiment of the invention; It can be 1-99 root spring that the said number of springs that is arranged between upper base plate 2 and the following seat board 1 as back-moving spring 34 needs according to mechanics; Its distribution form can be nested with in horizontal plane each other; Also can in upright plane, be nested with each other, can also arrange according to design demand.

As another conversion of the embodiment of the invention, can be circular cross-section as the spring wire of back-moving spring 34, also can be square or square-section.

As another conversion of the embodiment of the invention, all can adjust according to design demand as the intensity of spring wire diameter, spring external diameter, spring inside diameter, mean diameter of coil, pitch, the support number of turns, number of total coils and the manufactured materials of back-moving spring 34, modulus of elasticity etc.

As another conversion of the embodiment of the invention, the drag-line quantity of every group of drag-line 13 can be the 1-99 root.

The above-mentioned description to embodiment all is not the restriction to the utility model scheme; Therefore; Protection scope of the present invention not only is confined to the foregoing description; Anyly only all should be regarded as dropping within protection scope of the present invention for pro forma but not substantial various modification and improvement according to what the utility model design had been done.

Claims (10)

1. drag-line-spring shock absorption bearing; Comprise and have pedestal (35) and pedestal (35) have following seat board (1), the upper base plate (2) in a chamber (20) and be stacked and placed on first buffer board (3), intermediate plate (4), wearing plate (5) and second buffer board (6) in the said seat chamber (20) successively; It is characterized in that: also include shearing bolt (7), block (8), two bolts dislocate automatically device (9), drag-line (13) and back-moving spring (34); Each anchoring of vertical down either side of said upper base plate (2) has one group of block (8) that vertically is provided with, and its height should be able to guarantee when shock mount is shifted, can suitable contacting be arranged with following seat board (1); Said shearing bolt (7) passes down seat board (1), first buffer board (3), intermediate plate (4), wearing plate (5), second buffer board (6) and upper base plate (2) successively; Its upper end leans out the 6th bolt hole (26) and one of them bolt on the upper base plate (2) device (9) of dislocating automatically and connects; The lower end leans out down first bolt hole (21) and another bolt on the seat board (1) device (9) of dislocating automatically and connects, and constitutes sheared edge (19) at the middle part of shearing bolt (7); One end of said drag-line (13) and upper base plate (2) connect, and the other end connects with following seat board (1); Said back-moving spring (34) is placed on pedestal (35) on every side, and its upper end is fixing with upper base plate (2), and the lower end is fixing with following seat board (1).

2. drag-line according to claim 1-spring shock absorption bearing it is characterized in that said back-moving spring (34) is that the spring external diameter equates, or the upper springs external diameter is little, the lower springs external diameter is big, or the upper springs external diameter is big, the lower springs external diameter little in any.

3. drag-line according to claim 1-spring shock absorption bearing, the number of springs that it is characterized in that said back-moving spring (34) is the 1-99 root, distribution form be nested with each other in the horizontal plane or upright plane in be nested with each other; Said back-moving spring (34) adopts Fine Steel Casting iron, alloy steel or non-ferrous alloy to process.

4. drag-line according to claim 1-spring shock absorption bearing is characterized in that said drag-line (13) is four groups, and the quantity of every group of drag-line is the 1-99 root, and every drag-line is processed by steel strand, high strength steel tow or carbon fiber.

5. drag-line according to claim 1-spring shock absorption bearing; Four bights that it is characterized in that said upper base plate (2) respectively are provided with one second drag-line hole (17); Accordingly; Four bights of following seat board (1) respectively are provided with one first drag-line hole (15), and each connects the upper end of every group of drag-line (13) with the corresponding second drag-line hole (17), and each connects the lower end with the corresponding first drag-line hole (15).

6. drag-line according to claim 4-spring shock absorption bearing; The upper end that it is characterized in that described every group of drag-line (13) is fixed in the second drag-line hole (17) through second positioning cap (16), and the lower end is fixed in the first drag-line hole (15) through first positioning cap (14).

7. drag-line according to claim 1-spring shock absorption bearing is characterized in that the two ends of said shearing bolt (7) all have connection screw thread (12), and bolt is dislocated device (9) automatically through this connection screw thread (12) and shearing bolt (7) connection.

8. drag-line according to claim 1-spring shock absorption bearing; It is characterized in that the said bolt device (9) of dislocating automatically comprises nut (31), spring (32) and packing ring (33); Spring (32) and packing ring (33) are nested with on shearing bolt (7); (12 spin cooperates nut (31), and spring (32) is positioned between nut (31) and the packing ring (33) with connecting screw thread.

9. drag-line according to claim 1-spring shock absorption bearing is characterized in that block (8) inboard is bonded with the 3rd buffer board (11).

10. drag-line according to claim 1-spring shock absorption bearing is characterized in that being provided with sealing ring (18) between said first buffer board (3) and the intermediate plate (4), and said intermediate plate (4) constitutes a slide plate chamber (10) towards a surface of said wearing plate (5).

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