CN209243573U - High-strength impact-resistant modular expansion device - Google Patents

Abstract

The utility model belongs to bridge equipment technical field, disclose a kind of high-strength impact-resistant modular expansion device, including anchor, support beam, spandrel girder and shift unit, the spandrel girder includes two side bars and several are set in qually spaced in the central sill between two side bars, the cross section of the side bar is c-type structure of the opening backwards to the central sill, and by top flange plate, web and bottom wing listrium are integrally formed composition, the bottom surface of the bottom wing listrium is provided with vertical riveting blind hole, the anchor includes the first rivet and several anchor plates that can be nested with the c-opening of the side bar, the cross section of the anchor plate is also c-type structure, and by upper plate, side plate and bottom plate are integrally formed composition, riveting through holes corresponding with the riveting blind hole position are provided on the bottom plate.The utility model has the advantages that fixed structure is stable, impact resistance is good.

Description

High-strength impact-resistant modular expansion device

Technical field

The utility model belongs to bridge equipment technical field, and in particular to a kind of flexible dress of high-strength impact-resistant modulus type It sets.

Background technique

As the height of temperature changes, due to the principle expanded with heat and contract with cold, the length of bridge also can be with its variation, to make bridge The end of beam generates displacement, and in order to protect the ride comfort of bridge structure and vehicle pass-through, bridge extension joint comes into being, existing Bridge extension joint be broadly divided into modulus type and single two kinds of structures of seam, it is most commonly used, be modular expansion device, mould Numerical expression telescopic device is part most weak in bridge structure, it is the repeated action for directly bearing vehicular load, and Also it is used to bear the lateral displacement of bridge, guarantees that bridge structure will not change because expanding with heat and contract with cold, cause damages to bridge.

Existing modular expansion device is primarily present following problems, first is that: the anchoring piece of telescopic device is usually to use Welding is fixed with side bar, and without other fixations, but welding has biggish welding residual force stress and deformation, deposits A possibility that generating welding defect, it generally will appear the disadvantages of connector plasticity declines, joint performance is uneven and crack arrest is poor, This makes welding structure be easy brittle failure and fatigue rupture occur, is easiest to go wrong in the facility for having cyclic loading, this is just The stationarity for causing side bar and anchoring piece is poor, and impaired problem is easy under the impact of vehicle, prevents telescopic device from just It is often used；Second is that: there is also the contacts area and forced area of anchoring piece and side bar small, the resistance to punching of existing modular expansion device The problem of hitting property difference is easy to be broken after being influenced by the pressure of vehicle, the contractility of bridge and extraneous various factors for a long time Bad, this, which will lead to telescopic device, occurs being unable to the problem of normal use, service life is not long and needs are frequently safeguarded, greatly Increase use cost.

Utility model content

Side bar and anchoring piece fixed structure in existing telescopic device be unstable, poor impact resistance in order to solve, and anchoring The problem of part and side bar are more easily damaged, a kind of the purpose of this utility model is to provide fixed structures more stable, contact surface Long-pending and forced area is big, anchoring piece and the good and with long service life high-strength impact-resistant modulus type of side bar impact resistance stretch and fill It sets.

The technology employed by the present utility model is

A kind of high-strength impact-resistant modular expansion device, including anchor, the support parallel with the current direction in road surface Crossbeam, the spandrel girder vertical with the support beam and the shift unit for driving the support beam mobile；

The spandrel girder includes two side bars and several are set in qually spaced in the central sill between two side bars, wherein described The cross section of side bar is c-type structure of the opening backwards to the central sill, and is integrally formed group by top flange plate, web and bottom wing listrium At the bottom surface of the bottom wing listrium is provided with riveting blind hole straight up；

The anchor includes the first rivet and several anchoring steel that can be nested with the c-opening of the side bar Plate, wherein the cross section of the anchor plate is also c-type structure, and is made of the integrated molding of upper plate, side plate and bottom plate, described Upper plate is nested between the top flange plate and the bottom wing listrium, and the bottom wing listrium is nested in the upper plate and the bottom plate Between, the bottom surface of the bottom wing listrium is completely covered in the bottom plate, is provided on the bottom plate corresponding with the riveting blind hole position Riveting through holes.

Optimization, the circular through hole for being inserted into bridge floor transverse steel is provided on the side plate.

Optimization, the shift unit include displacement controlling box, the damping spring inside the displacement controlling box and It is used to support the bearing block of the support beam, wherein the bearing block is separately positioned on the displacement controlling box top and bottom On the inner wall at end, the quantity of the displacement controlling box is 2, and is located at the left and right sides of the support beam, described Activity is protruded into the displacement controlling box of respective side respectively for the left and right ends of support beam, and one end of the damping spring is fixed On the medial surface for connecting the displacement controlling box, the other end of the damping spring is fixedly connected with the support beam of respective side End.

It advanced optimizes, the outside of the displacement controlling box is wrapped up by pre-buried steel plate frame, wherein the Bit andits control Case is fixedly connected by the second rivet with the steel plate frame, and the top braces of the steel plate frame connect the bottom of the bottom wing listrium Portion.

Optimization, the drainage arrangement for draining is equipped between the side bar and the central sill or between two central sills.

It advanced optimizes, the drainage arrangement includes the first waterstop and the second sealing set gradually from top to bottom Band.

Specifically, first waterstop is made of stainless steel material, second waterstop using natural rubber or Ethylene propylene diene rubber is made.

The utility model has the following beneficial effects:

The utility model is a kind of high-strength impact-resistant modular expansion device, and the side bar in the utility model is by top flange Plate, web and lower flange board group at, and constitute cross section be opening backwards to central sill c-type structure, also at the bottom of bottom wing listrium Face is provided with riveting blind hole straight up, and the anchor in the utility model is by the first rivet and can be with the c-opening of side bar The anchor plate of nested arrangements forms, and riveting corresponding with the riveting blind hole position is provided on the bottom plate of the anchor plate Through-hole.

By above-mentioned design, on the one hand, the rivet can protrude into the riveting blind hole after passing through the riveting through holes It is interior, the side bar is firmly fixed on anchor plate, riveting has reliable simple process, connection, shock resistance and impact resistance Property good advantage, the reliability that side bar is connected with anchor plate can be greatly improved, make the side bar that there is better anti-impact It hits and shock resistance, avoids the problem of will appear brittle failure and fatigue rupture, greatly improve the reliability used；Another party Face, the side bar and the anchor plate cooperate nested encryptions using c-opening, direct compared to traditional anchor plate It is welded on side bar bottom, greatly increases the contact area and forced area of the anchor plate Yu the side bar, makes the anchor Gu steel plate can preferably share impact force suffered by side bar, due to prevent side bar from losing with described in because by biggish impact force Anchor plate is fixedly connected.The impact resistance for greatly increasing side bar, improves service life.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the cross-sectional view of high-strength impact-resistant modular expansion device provided by the utility model.

Fig. 2 is the attachment structure schematic diagram of side bar and anchor plate provided by the utility model.

Fig. 3 is the structural schematic diagram of side bar provided by the utility model.

Fig. 4 is the structural schematic diagram of anchor plate provided by the utility model.

Fig. 5 is the explosive view of side bar provided by the utility model, anchor plate and rivet.

In above-mentioned attached drawing, 1- support beam；2- spandrel girder；The first rivet of 3-；4- anchor plate；5- displacement controlling box；6- Damping spring；7- bearing block；8- steel plate frame；The second rivet of 9-；The first waterstop of 10-；The second waterstop of 11-；201- side bar； 202- central sill；401- upper plate；402- side plate；403- bottom plate；201a- top flange plate；201b- web；201c- bottom wing listrium； 201d- rivets blind hole；402a- circular through hole；403a- riveting through holes.

Specific embodiment

The utility model is further elaborated combined with specific embodiments below.It should be noted that for these The explanation of way of example is used to help understand the utility model, but does not constitute the restriction to the utility model.

Embodiment one

As shown in Fig. 1~5, high-strength impact-resistant modular expansion device provided by the present embodiment, including anchor, Support beam 1, with the support beam 1 vertical spandrel girder 2 and the drive support beam 1 parallel with the current direction in road surface Mobile shift unit.

The spandrel girder 2 includes two side bars 201 and several are set in qually spaced in the central sill 202 between two side bars 201, Wherein, the cross section of the side bar 201 is c-type structure of the opening backwards to the central sill 202, and by top flange plate 201a, web 201b and bottom wing listrium 201c is integrally formed composition, and the bottom surface of the bottom wing listrium 201c is provided with riveting blind hole straight up 201d。

The anchor includes the first rivet 3 and several anchors that can be nested with the c-opening of the side bar 201 Gu steel plate 4, wherein the cross section of the anchor plate 4 is also c-type structure, and by upper plate 401, side plate 402 and bottom plate 403 1 Body formed composition, the upper plate 401 are nested between the top flange plate 201a and the bottom wing listrium 201c, the lower flange Plate 201c is nested between the upper plate 401 and the bottom plate 403, and the bottom wing listrium 201c is completely covered in the bottom plate 403 Bottom surface, be provided with riveting through holes 403a corresponding with the riveting position blind hole 201d on the bottom plate 403.

As shown in Figure 1, passing through the description to the high-strength impact-resistant modular expansion device specific structure:

Supporter of the support beam 1 as the spandrel girder 2；The spandrel girder 2 and the support beam 1 are made jointly With the cyclic reverse loading power and impact force for bearing road surface passing vehicle；The shift unit is for driving the support beam 1 It stretches and moves with bridge, to adapt to the lateral displacement that bridge is generated due to expanding with heat and contract with cold；

The spandrel girder 2 includes two side bars 201 and several central sills 202, the side bar 201 as expansion joint both ends with The abutting end of bridge, effect are the impact forces in order to bear generation of the vehicle by expansion joint when；The central sill 202 is on the one hand For bearing the impact force and load force of vehicle pass-through, the effect of another aspect is: moving with the flexible of bridge, to adapt to bridge The variation of beam guarantees the current ride comfort of road vehicles；The anchor prevents side bar 201 for fixing the side bar 201 It is fallen off due to the impact force by passing vehicle with bridge, telescopic device is caused to be unable to normal use.

As shown in Figure 3 and Figure 4, the description of specific structure is carried out to the side bar 201 and the anchor plate 4 below:

The side bar 201 is made of top flange plate 201a, web 201b and bottom wing listrium 201c, and is formd cross section and be Opening is backwards to the c-type structure of the central sill 202, and the cross section of the anchor plate 4 is also c-type structure, and by the upper plate 401, side plate 402 and bottom plate 403 form, under the fixed structure of nesting, as shown in Fig. 2, the upper plate 401 is nested on described Between flange plate 201a and the bottom wing listrium 201c, the bottom wing listrium 201c is nested in the upper plate 401 and the bottom plate It between 403, designs in this way, enables the anchor plate 4 and the side bar 201 firmly nested by c-opening Together, contact area and forced area are greatly increased, the impact force for enabling the side bar 201 to be subject to preferably distributes Onto the anchor plate 4, prevent side bar 201 from damaging because stress is excessive.

In addition, blind hole 201d is riveted as shown in figure 5, being also provided in the bottom surface of the bottom wing listrium 201c, and at the bottom It is provided on plate 403 and the one-to-one riveting through holes 403a in the position the riveting blind hole 201d, in this way, first rivet 3 can protrude into the riveting blind hole 201d after passing through the riveting through holes 403a, and the side bar 201 is firmly fixed on On the anchor plate 4, riveting have the advantages that have simple process, connect reliably, shock resistance and impact resistance it is good, can make The side bar 201 and the anchor plate 4 have stronger impact resistance and shock resistance, and it is long-term in vehicle to avoid traditional welding In the case where passage it is possible that joint embrittlement and fatigue damage the problem of.

Under the basis of above-mentioned fixed structure, can also further it be optimized: in the side bar 201 and the anchoring The nested joint of the c-opening of steel plate 4 carries out secondary fixation using welding, because of the welding between two c-opening joints Length will be far longer than the length that anchor plate 4 in conventional telescopic device is directly welded at 201 bottom of side bar, in this way, energy Enough make the side bar 201 and the anchor plate 4 that there is dual fixed structure, makes joint more firm stable, make institute Modular expansion device is stated with stronger impact resistance, greatly improves the service life used.

From there through the specific descriptions to aforementioned high-strength impact-resistant modular expansion device, on the one hand, the side bar 201 It is engaged between the anchor plate 4 using mutually nested between two c-openings, increases the side bar 201 and institute The contact area and forced area between anchor plate 4 are stated, the anchor plate 4 is enable to share suffered by a part of side bar 201 The impact force arrived reduces the probability that the side bar 201 is damaged because stress is excessive；On the other hand, the side bar 201 and described Be fixed between anchor plate 4 using riveting method, riveting have riveting have with simple process, connect reliably, antidetonation Property and the good advantage of impact resistance, can make the side bar 201 and the anchor 4 that there is better impact resistance and antidetonation Property, avoid conventional telescopic device using be welded and fixed it is possible that joint embrittlement and fatigue rupture the problem of.In addition, Secondary fixation can also be carried out using welding in the joint of the c-opening of the side bar 201 and the anchor plate 4, this can The connection that the side bar 201 and the anchor plate 4 are further fixed under the mode of riveting can make side bar 201 and anchoring Steel plate 4 has double locking mechanism, further increases service life.

Optimization, the circular through hole 402a for being inserted into bridge floor transverse steel is provided on the side plate 402.As shown in figure 4, By above-mentioned design, so that anchor plate 4 is fixed by bridge floor transverse steel, there is anchor plate 4 good steady It is qualitative, the offset and loosening that generate position due to by impact force are prevented, guarantees the stability of 201 position of side bar, into one Step guarantees that vehicle has good current ride comfort.

Optimization, the shift unit includes displacement controlling box 5, the damping spring 6 inside the displacement controlling box 5 With the bearing block 7 for being used to support the support beam 1, wherein the bearing block 7 is separately positioned on the displacement controlling box 5 and pushes up On the inner wall of end and bottom end, the quantity of the displacement controlling box 5 is 2, and is located at the left and right two of the support beam 1 Side, activity is protruded into the displacement controlling box 5 of respective side respectively for the left and right ends of the support beam 1, the damping spring 7 One end be fixedly connected on the medial surface of the displacement controlling box 5, the other end of the damping spring 5 is fixedly connected with respective side The end of the support beam 1.

It advanced optimizes, the outside of the displacement controlling box 5 is wrapped up by pre-buried steel plate frame 8, wherein the displacement control Case 5 processed is fixedly connected by the second rivet 9 with the steel plate frame 8, and the top braces of the steel plate frame 8 connect the bottom wing listrium The bottom of 201c.

As shown in Figure 1, by the description to above-mentioned shift unit specific structure, the displacement controlling box 5 and the damping 6 collective effect of spring controls the lateral displacement of the support beam 1, when bridge generates lateral displacement due to expanding with heat and contract with cold, The support beam 1 can also carry out lateral displacement under the drive of bridge, at this point, the support beam 1 will compress end Damping spring 6, after displacement, the support beam 1 just will receive the elastic force of the damping spring 6, and then be restored to just Beginning position finally makes the central sill 2 in support beam 1 be restored to initial position, in this way, so that it may guarantee the flat of vehicle pass-through It is pliable, guarantee the normal pass of vehicle.The both ends of the support beam 1 are respectively protruding into the inside of the displacement controlling box 5, this is just The traverse range of the support beam 1 is limited, prevents from causing the modular expansion device due to it is excessive because shifting Damage.

7 one side of bearing block is used to support the support beam 1, on the other hand, is located at the displacement controlling box 5 and pushes up Carrier block 7 on the inner wall of end is also used to compress the support beam 1, prevents the support beam 1 from the variation of position, shadow occurs Ring the normal use of the modular expansion device.

It can also further be optimized on above structure: be additionally provided in the outside of the displacement controller 5 pre-buried Steel plate frame 8, wrap up the displacement controlling box 5 by the steel plate frame 8, and the displacement controlling box 5 passes through second riveting Nail 9 forms a fixed connection with the steel plate frame 8, designs in this way, can prevent the Bit andits control by the steel plate frame 8 Case 5 is moved because of the active force by the support beam 1, and the modular expansion device is caused to be unable to normal use.

Optimization, the row for draining is equipped between the side bar 201 and the central sill 202 or between two central sills 202 Water installations.

It advanced optimizes, the drainage arrangement includes the first waterstop 10 and the second sealing set gradually from top to bottom Band 11.

Specifically, first waterstop 10 is made of stainless steel material, second waterstop 11 uses natural rubber Glue or ethylene propylene diene rubber are made.

By the description to above-mentioned drainage arrangement specific structure, first waterstop 10 and second waterstop are set 11 effect is in order to prevent after first waterstop 10 on upper layer is destroyed, and rainwater enters the modular expansion device Inside causes the modular expansion device to be unable to normal use；

The reason of material that first waterstop 10 on upper layer is arranged is stainless steel material is: since stainless steel material is with good Good hardness and ductility is good, on the one hand, can be avoided vehicle bring rubble damages traditional rubber fastening band, makes Waterstop is unable to the problem of normal use, on the other hand, since stainless steel has good ductility, can satisfy with the side It carries out carrying out telescopic displacement function between flexible or two central sills 202 between beam 201 and the central sill 202.In the present embodiment, it lifts Example second waterstop 11 is made of ethylene propylene diene rubber, ethylene propylene diene rubber have it is excellent heat-resisting, ageing-resistant and elastic, The requirement of the waterstop of the modular expansion device can be fully met.

To sum up, using a kind of high-strength impact-resistant modular expansion device provided by the present embodiment, there is following technology Effect:

(1) it is engaged between the side bar 201 and the anchor plate 4 using mutually nested between two c-openings, The contact area and forced area between the side bar 201 and the anchor plate 4 are increased, the anchor plate 4 is enable Impact force suffered by a part of side bar 201 is shared, the probability that the side bar 201 is damaged because stress is excessive is reduced.

(2) it is fixed between the side bar 201 and the anchor plate 4 using riveting method, riveting has riveting tool Have the advantages that with simple process, connection is reliable, shock resistance and impact resistance are good, the side bar 201 and the anchoring can be made Device 4 have better impact resistance and shock resistance, avoid conventional telescopic device using be welded and fixed it is possible that connect Embrittlement and the problem of fatigue rupture at conjunction.

(3) welding progress can also be used secondary in the joint of the c-opening of the side bar 201 and the anchor plate 4 Fixed, this can further fix the connection of the side bar 201 and the anchor plate 4 under the mode of riveting, can make side Beam 201 and anchor plate 4 have double locking mechanism, further increase service life.

The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.

Claims (7)

1. a kind of high-strength impact-resistant modular expansion device, it is characterised in that: put down including anchor, with the current direction in road surface Capable support beam (1), the spandrel girder vertical with the support beam (1) (2) and the shifting for driving the support beam (1) mobile Position device；

The spandrel girder (2) includes two side bars (201) and several are set in qually spaced in the central sill between two side bars (201) (202), wherein the cross section of the side bar (201) is c-type structure of the opening backwards to the central sill (202), and by top flange plate (201a), web (201b) and bottom wing listrium (201c) are integrally formed composition, and the bottom surface of the bottom wing listrium (201c) is provided with perpendicular Straight upward riveting blind hole (201d)；

The anchor includes the first rivet (3) and several anchors that can be nested with the c-opening of the side bar (201) Gu steel plate (4), wherein the cross section of the anchor plate (4) is also c-type structure, and by upper plate (401), side plate (402) and bottom Plate (403) is integrally formed composition, and the upper plate (401) is nested in the top flange plate (201a) and the bottom wing listrium (201c) Between, the bottom wing listrium (201c) is nested between the upper plate (401) and the bottom plate (403), and the bottom plate (403) is complete The bottom surface of bottom wing listrium (201c) described in all standing is provided with and riveting blind hole (201d) position pair on the bottom plate (403) The riveting through holes (403a) answered.

2. a kind of high-strength impact-resistant modular expansion device according to claim 1, it is characterised in that: the side plate (402) circular through hole (402a) for being inserted into bridge floor transverse steel is provided on.

3. a kind of high-strength impact-resistant modular expansion device according to claim 1, it is characterised in that: the displacement dress It sets including displacement controlling box (5), be located at the displacement controlling box (5) internal damping spring (6) and be used to support the support The bearing block (7) of crossbeam (1), wherein the bearing block (7) is separately positioned on the displacement controlling box (5) top and bottom end On inner wall, the quantity of the displacement controlling box (5) is 2, and is located at the left and right sides of the support beam (1), institute Stating the left and right ends of support beam (1), activity is protruded into the displacement controlling box (5) of respective side respectively, the damping spring (6) one end is fixedly connected on the medial surface of the displacement controlling box (5), and the other end of the damping spring (6) is fixedly connected The end of the support beam (1) of respective side.

4. a kind of high-strength impact-resistant modular expansion device according to claim 3, it is characterised in that: the displacement control It is wrapped up by pre-buried steel plate frame (8) outside of case (5) processed, wherein the displacement controlling box (5) passes through the second rivet (9) and institute It states steel plate frame (8) to be fixedly connected, the top braces of the steel plate frame (8) connect the bottom of the bottom wing listrium (201c).

5. a kind of high-strength impact-resistant modular expansion device according to claim 1, it is characterised in that: the side bar (201) drainage arrangement for draining is equipped between the central sill (202) or between two central sills (202).

6. a kind of high-strength impact-resistant modular expansion device according to claim 5, it is characterised in that: the draining dress Set the first waterstop (10) and the second waterstop (11) including setting gradually from top to bottom.

7. a kind of high-strength impact-resistant modular expansion device according to claim 6, it is characterised in that: described first stops Water band (10) is made of stainless steel material, and second waterstop (11) is made of natural rubber or ethylene propylene diene rubber.