CN216275207U - Bridge expansion joint device - Google Patents

Abstract

A bridge expansion joint device comprises an expansion joint shielding mechanism, a supporting beam is supported on a damping mechanism, and the bridge expansion joint device is characterized in that: the damping mechanism comprises a box body, a box cover, a beam supporting end upper pressing device, a base plate and a beam supporting end lower supporting device, wherein the box body is arranged on a bridge beam body, the box cover is matched on the box body, the beam supporting end upper pressing device comprises a beam supporting end upper pressing wear-resisting plate and a beam supporting end upper pressing supporting block, the base plate is superposed above the beam supporting end upper pressing supporting block, and the beam supporting end lower supporting device comprises a beam supporting end wear-resisting supporting plate and a beam supporting end pressure-bearing supporting block; the expansion joint shielding mechanism is fixed with the middle part of the supporting beam and the box cover; the compression supporting block on the beam supporting end and the bearing supporting block on the beam supporting end are polyurethane blocks, and the compression wear-resisting plate on the beam supporting end and the wear-resisting supporting plate on the beam supporting end are polytetrafluoroethylene plates. The excellent damping effect is permanently ensured, and the requirements of the sliding abrasion resistance of the supporting beam and the expected long-term service requirement are met.

Description

Bridge expansion joint device

Technical Field

The utility model belongs to the technical field of bridge auxiliary components, and particularly relates to a bridge expansion joint device.

Background

As is known in the art, since an object may expand and contract (also referred to as "expand and contract") due to changes in the natural environment, for example, but not limited to, a bridge such as a river, a lake and a sea, a railway, particularly a high-speed rail, and an urban elevated bridge (also referred to as "elevated road bridge"), a beam gap, which is the aforementioned expansion joint, is usually disposed between two adjacent beam bodies with a predetermined beam length, and an expansion joint device is disposed between the beam gaps. The expansion joint device has the advantages that: the bridge deck structure has the advantages of meeting the free deformation of the bridge structure under the influence of factors such as temperature change, vehicle load action and the like, reducing earthquake harm, improving driving comfort, preventing sundries and rainwater from invading, improving the overall viewing effect of the bridge deck, and the like.

Technical information relating to bridge expansion joint devices is found in published chinese patent documents, such as CN1548655A (bridge expansion joint device), CN101768922B (a noise reduction type bridge expansion joint device with vertical displacement function), CN203411893U (a module sealing type bridge expansion joint device), CN204570468U (a bridge expansion joint structure), CN204385611U (a fabricated section steel comb tooth type expansion joint device), CN200955120Y (an anchoring type expansion joint device with improved structure), and CN105507141A (bridge expansion joint device).

As is also known in the art, the damping mechanism is an essential component of the bridge expansion joint device, and it is common in the prior art to use a combination of rubber and teflon or a combination of rubber and a metal plate as the damping component, for example, a teflon plate or a metal plate is combined on the side of the rubber facing the pressure-bearing surface, but the rubber is easily aged, so that the service life is limited, or after the rubber is used for a long time, the elastic restoring force is degraded or eliminated, thereby affecting the performance of the entire bridge expansion joint device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bridge expansion joint device which is beneficial to ensuring excellent damping effect of a damping mechanism for a long time and meets the requirement of sliding and wear resistance of a supporting cross beam so as to obviously prolong the expected service life.

The utility model aims to solve the problem that the bridge expansion joint device comprises an expansion joint shielding mechanism which is positioned between two adjacent bridge bodies in the length direction under use and corresponds to an expansion joint reserved between the two adjacent bridge bodies; the damping mechanism is characterized by comprising a box body, a box cover, a pressing device on the beam supporting end, a cushion plate and a beam supporting end lower supporting device, wherein the box body is arranged on the bridge beam body in a use state, a box body cavity of the box body is formed into a box body cavity opening for the beam supporting end of the supporting beam to stretch into the box body cavity, a box body shear nail is fixed on one side of the box body side wall of the box body opposite to the box body cavity, and the box cover covers the box body at a position corresponding to the upper part of the box body cavity, and a box cover shear nail is fixed on one side of the box cover back to the box body cavity, the pressing device on the beam supporting end comprises a beam supporting end upper pressing wear-resisting plate and a beam supporting end upper pressing supporting block, the beam supporting end upper pressing wear-resisting plate corresponds to the upper surface of the beam supporting end of the supporting beam, the upper surface of the beam supporting end is in sliding fit with the bottom surface of the beam supporting end upper pressing wear-resisting plate, the beam supporting end upper pressing supporting block is superposed on the beam supporting end pressing wear-resisting plate, a backing plate is superposed above the beam supporting end pressing supporting block and is fixed with the beam supporting end upper pressing supporting block and the beam supporting end upper pressing wear-resisting plate by a box cover screw arranged on the box cover, the beam supporting end lower supporting device comprises a beam supporting end wear-resisting supporting plate and a beam supporting end bearing block, and the beam supporting end wear-resisting supporting plate is superposed on the beam supporting end bearing block at a position corresponding to the bottom of the beam supporting end, the bottom surface of the beam supporting end is in sliding fit with the upper surface of the beam supporting end wear-resistant supporting plate, the beam supporting end pressure-bearing supporting block is fixed on a box body bottom plate of the box body, and the beam supporting end pressure-bearing supporting block and the beam supporting end wear-resistant supporting plate are fixed in a box body cavity by box body bottom plate screws arranged on the box body bottom plate; the expansion joint shielding mechanism is fixed with the middle part of the supporting beam in the length direction and the box cover; the left end and the right end of the supporting end of the cross beam are respectively connected with the box body through a sliding reset device; the compression supporting block on the beam supporting end and the bearing supporting block on the beam supporting end are polyurethane blocks, and the compression wear-resisting plate on the beam supporting end and the wear-resisting supporting plate on the beam supporting end are polytetrafluoroethylene plates.

In a specific embodiment of the utility model, the expansion joint shielding mechanism comprises a left side beam, a right side beam, a middle beam, a first impurity-resisting water-resisting belt I and a second impurity-resisting water-resisting belt II, wherein the left side beam and the right side beam are supported on the box cover and are fixed with the box cover, a left side beam water-resisting belt convex strip caulking groove is formed on one side of the left side beam facing the middle beam and along the length direction of the left side beam, a right side beam water-resisting belt convex strip caulking groove is formed on one side of the right side beam facing the middle beam and along the length direction of the right side beam, the middle beam is positioned between the left side beam and the right side beam, the middle beam is supported in the middle of the supporting cross beam and is fixed with the supporting cross beam, a middle beam water-resisting belt convex strip left caulking groove is formed on one side of the middle beam facing the left side beam and at the position corresponding to the left side beam water-resisting belt convex strip caulking groove along the length direction of the middle beam, a convex right caulking groove of the middle beam water-blocking tape is formed on one side of the middle beam facing the right beam and at the position corresponding to the convex embedded groove of the right beam water-blocking tape along the length direction of the middle beam, a left convex I of the first anti-impurity water-blocking tape I is formed on the left side of the first anti-impurity water-blocking tape I in the length direction, a right convex I of the first anti-impurity water-blocking tape I is formed on the right side of the first anti-impurity water-blocking tape I in the length direction, the left convex I of the first anti-impurity water-blocking tape I is embedded into the convex left caulking groove of the left beam water-blocking tape, the right convex I of the first anti-impurity water-blocking tape I is embedded into the convex left caulking groove of the middle beam water-blocking tape, a left convex II of the second anti-impurity water-blocking tape II in the length direction is formed on the left side of the second anti-impurity water-blocking tape II, a right convex strip II of the second anti-impurity water-blocking tape II is embedded into the right convex embedded groove of the middle beam water-blocking tape II in the length direction, the right raised strip II of the second impurity-proof water-blocking tape is embedded into the raised strip caulking groove of the right beam water-blocking tape; a beam supporting end front limiting block is arranged in a box cavity of the box body and at a position corresponding to the front side of the beam supporting end pressure-bearing supporting block, a beam supporting end rear limiting block is arranged at a position corresponding to the rear side of the beam supporting end pressure-bearing supporting block, and the bottoms of the beam supporting end front limiting block and the beam supporting end rear limiting block are fixed with the box body bottom plate; the beam supporting end of the supporting beam extends into the space between the beam supporting end front limiting block and the beam supporting end rear limiting block.

In another specific embodiment of the present invention, a box cover side beam anchoring plate is fixed on the box cover, and the left side beam and the right side beam are respectively welded and fixed with the box cover side beam anchoring plate on the corresponding box cover; a middle beam fixing mechanism for fixing the middle beam and the supporting cross beam is arranged at the bottom of the middle beam and at a position corresponding to the middle part of the supporting cross beam in the length direction; the first impurity-proof water-blocking tape I and the second impurity-proof water-blocking tape II are rubber tapes.

In still another specific embodiment of the present invention, the intermediate beam fixing mechanism includes an intermediate beam front fixing plate, an intermediate beam rear fixing plate, an intermediate beam fixing plate coupling plate, an upper supporting beam wear-resistant device and a lower supporting beam wear-resistant device, the intermediate beam front fixing plate and the intermediate beam rear fixing plate are disposed in a state of corresponding to each other in the front-rear direction, and upper portions thereof are each welded and fixed to a bottom surface of the intermediate beam, while a lower portion of the intermediate beam front fixing plate is fixed to a front end of the intermediate beam fixing plate coupling plate by an intermediate beam front fixing plate screw, a lower portion of the intermediate beam rear fixing plate is fixed to a rear end of the intermediate beam fixing plate coupling plate by an intermediate beam rear fixing plate screw, a space between facing sides of the intermediate beam front fixing plate and the intermediate beam rear fixing plate is configured as a supporting beam fitting cavity, and a wear-resistant fixing plate is fixed to each of corresponding positions thereof by a screw on a side of the intermediate beam front fixing plate and the intermediate beam rear fixing plate facing the supporting beam fitting cavity and on each other side of the corresponding position thereof The middle beam fixing plate connecting plate is positioned below the supporting beam, the wear-resisting device on the supporting beam corresponds to the supporting beam matching cavity, the wear-resisting device on the supporting beam comprises a middle beam pressure-bearing wear-resisting block and a middle beam pressure-bearing block, the middle beam pressure-bearing wear-resisting block is arranged at the lower part of the middle beam pressure-bearing block, the middle beam pressure-bearing wear-resisting block and the middle beam pressure-bearing block are fixed with the bottom of the middle beam at the position corresponding to the supporting beam matching cavity by a wear-resisting device fixing screw on the supporting beam, the fixing plate wear-resisting block is contacted with the front side surface and the rear side surface of the supporting beam, the upper surface of the supporting beam is in sliding fit with the middle beam pressure-bearing wear-resisting block, the wear-resisting device under the supporting beam comprises a supporting beam pressure-bearing block and a supporting beam pressure-bearing block, and the supporting beam pressure-bearing block is superposed on the supporting beam pressure-bearing block, the supporting beam bearing block is arranged in the middle of the middle beam fixing plate connecting plate in the length direction, the supporting beam bearing block and the supporting beam bearing wear-resistant block are fixed with the middle beam fixing plate connecting plate at the position corresponding to the supporting beam by a supporting beam lower wear-resistant device fixing screw, and the lower surface of the supporting beam is in sliding fit with the supporting beam bearing wear-resistant block; the middle beam pressure-bearing block and the supporting beam pressure-bearing block are polyurethane blocks, and the middle beam pressure-bearing wear-resisting block, the supporting beam pressure-bearing wear-resisting block and the fixed plate wear-resisting block are polytetrafluoroethylene blocks.

In a further specific embodiment of the present invention, a beam supporting end limiting column is disposed on the front side and/or the rear side of the beam supporting end of the supporting beam, the beam supporting end limiting column on the front side of the beam supporting end corresponds to the end surface of the beam supporting end front limiting block on the side of the beam supporting end front limiting block departing from the box body cavity, and the beam supporting end limiting column on the rear side of the beam supporting end corresponds to the end surface of the beam supporting end rear limiting block on the side of the beam supporting end rear limiting block departing from the box body cavity.

In yet another specific embodiment of the present invention, said slide return means of the beam support end at the left end of said support beam is disposed at the rear side of the beam support end, and said slide return means of the beam support end at the right end of the support beam is disposed at the front side of the beam support end, the slide return means disposed at the front side of the beam support end at the right end of the support beam comprises a spring-defined support plate, a support beam spring seat plate, a support beam slide return spring and a spring-defined support plate attachment seat, the spring-defined support plate corresponding to the left side of the support beam slide return spring and the spring-defined support plate being attached to the spring-defined support plate attachment seat by a spring-defined support plate attachment screw, the support beam spring seat plate being welded to the front side of the beam support end of the support beam at a position corresponding to the right side of the support beam slide return spring, the supporting beam sliding reset spring is arranged between the spring limiting supporting plate and one opposite side of the supporting beam spring seat plate, and the spring limiting supporting plate connecting seat is fixed with the front side of the box body.

In a more specific embodiment of the utility model, a supporting beam upper wear plate is combined on the upper surface of the supporting beam along the length direction of the supporting beam, and a supporting beam lower wear plate is combined on the lower surface along the length direction of the supporting beam, wherein the supporting beam upper wear plate and the supporting beam lower wear plate are steel plates; support beam side wear plates are respectively combined on the front side and the rear side of the middle part of the support beam and at positions corresponding to each other, the fixing plate wear blocks are in contact with the support beam side wear plates, and the support beam side wear plates are steel plates.

In a further specific embodiment of the present invention, left side beam anchor plates are fixed to the left side of the left side beam at intervals, right side beam anchor plates are fixed to the right side of the right side beam at intervals, a left side beam anchor ring is welded to the left side beam anchor plates, and a right side beam anchor ring is welded to the right side beam anchor plates.

In yet a more specific embodiment of the present invention, the steel plate is a stainless steel plate.

The technical scheme provided by the utility model has the technical effects that: the damping mechanism comprises a box body, a box cover, an upper pressing device at the supporting end of the cross beam, a base plate and a lower supporting device at the supporting end of the cross beam, so that the structure is reasonable, the excellent damping effect can be permanently ensured, the sliding wear-resisting requirement of the supporting cross beam can be met, and the expected long-term service requirement can be met.

Drawings

Fig. 1 is an assembly structure view of the present invention.

Fig. 2 is a schematic view illustrating an application of the present invention.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1 in conjunction with fig. 2, in order to facilitate understanding of the present invention, fig. 1 shows one bridge girder 5, fig. 2 shows two bridge girders 5, and an expansion joint 6 reserved between two adjacent bridge girders 5 is also shown. The expansion joint shielding mechanism 1 of the structural system of the bridge expansion joint device is shown, and the expansion joint shielding mechanism 1 is positioned between the front two adjacent bridge girder bodies 5 in the length direction under use and corresponds to the expansion joint 6 reserved between the two adjacent bridge girder bodies; the supporting beams 2 are provided at intervals in the longitudinal direction of the two adjacent bridge girders, the left and right ends of the supporting beams 2 are each formed as beam supporting ends 21, the beam supporting ends 21 are slidably supported by the damper mechanisms 3, and the damper mechanisms 3 are provided in the two adjacent bridge girders 5 in a state of being aligned with each other and corresponding to each other in the left and right, that is, in the bridge girder concrete pouring grooves 51 of the bridge girders 5 shown in fig. 2.

The technical key points of the technical scheme provided by the utility model are as follows: the damper mechanism 3 includes a box body 31, a box cover 32, a beam support upper hold-down device 33, a backing plate 34, and a beam support lower support device 35, the box body 31 is disposed on the bridge beam body 5 in a use state, that is, in the bridge beam body concrete casting groove 51, a box cavity 311 of the box body 31 is configured as a box cavity opening toward the side of the support beam 2 for the beam support end 21 of the support beam 2 to project into the box cavity 311, box shear nails 312 are fixed to a box side wall of the box body 31 and a side facing away from the box cavity 311, as exemplified by a right box body 31 shown in fig. 1, the shear nails 312 are fixed to front and rear wall bodies and a right wall body of the box body, the box cover 32 is fitted to the box body 31 at a position corresponding to an upper side of the box cavity 311, and box cover shear nails 321 are fixed to a side of the box cover 32 facing away from the box cavity 311, the upper cross beam support end pressing device 33 comprises an upper cross beam support end pressing wear plate 331 and an upper cross beam support end pressing support block 332, the upper cross beam support end pressing wear plate 331 corresponds to the upper surface of the cross beam support end 21 of the support cross beam 2, the upper surface of the cross beam support end 21 is in sliding fit with the bottom surface of the upper cross beam support end pressing wear plate 331, the upper cross beam support end pressing support block 332 is superposed on the upper cross beam support end pressing wear plate 331, the pad 34 is superposed on the upper cross beam support end pressing support block 332 and fixed with the upper cross beam support end pressing wear plate 332 and the upper cross beam support end pressing wear plate 331 by the box cover screw 322 arranged on the box cover 32, the upper cross beam support end pressing wear plate 331 can be bonded and fixed with the upper cross beam support end pressing support block 332 by adhesive, and the lower cross beam support end pressing support device 35 comprises a cross beam support end pressing support end support plate 351 and a cross beam support end pressing block 352, the beam supporting end wear-resistant supporting plate 351 is superposed on the beam supporting end pressure-bearing supporting block 352 at a position corresponding to the bottom of the beam supporting end 21, the bottom surface of the beam supporting end 21 is in sliding fit with the upper surface of the beam supporting end wear-resistant supporting plate 351, the beam supporting end pressure-bearing supporting block 352 is fixed on the box body bottom plate 313 of the box body 31, the beam supporting end pressure-bearing supporting block 352 and the beam supporting end wear-resistant supporting plate 351 are fixed in the box body cavity 311 by a box body bottom plate screw 3131 arranged on the box body bottom plate 313, and the beam supporting end wear-resistant supporting plate 351 can be bonded and fixed with the beam supporting end pressure-bearing supporting block 352 by adopting an adhesive; the expansion joint shielding mechanism 1 is fixed to the middle part of the support beam 2 in the length direction and the box cover 32; the left end and the right end of the beam supporting end 21 are respectively connected with the box body 31 through a sliding resetting device 211; in this embodiment, the beam support end upper compression support block 332 and the beam support end pressure support block 352 are polyurethane blocks, and the beam support end upper compression wear plate 331 and the beam support end wear support plate 351 are teflon plates.

Continuing to refer to fig. 1 and with reference to fig. 2, the expansion joint shielding mechanism 1 includes a left side member 11, a right side member 12, a middle member 13, a first impurity-preventing water-blocking tape i 14 and a second impurity-preventing water-blocking tape ii 15, the left side member 11 and the right side member 12 are supported on the box cover 32 and fixed to the box cover 32, a left side member water-blocking tape rib groove 111 is formed on a side of the left side member 11 facing the middle member 13 and along a longitudinal direction of the left side member 11, a right side member water-blocking tape rib groove 121 is formed on a side of the right side member 12 facing the middle member 13 and along a longitudinal direction of the right side member 12, the middle member 13 is located between the left side member 11 and the right side member 12, the middle member 13 is supported at a middle portion of the supporting cross member 2 and fixed to the supporting cross member 2, a middle member water-blocking tape rib groove 131 is formed on a side of the middle member 13 facing the left side member 11 and along a longitudinal direction of the middle member 13 at a position corresponding to the left side member water-blocking tape rib groove 111, a middle sill water-blocking tape convex right caulking groove 132 is formed on one side of the middle sill 13 toward the right sill 12 and at a position corresponding to the aforementioned right sill water-blocking tape convex right caulking groove 121 along the length direction of the middle sill 13, a first impurity-preventing water-blocking tape left convex strip i 141 is formed on the left side of the length direction of the first impurity-preventing water-blocking tape i 14, a first impurity-preventing water-blocking tape right convex strip i 142 is formed on the right side of the length direction of the first impurity-preventing water-blocking tape i 14, the first impurity-preventing water-blocking tape left convex strip i 141 is embedded in the aforementioned left sill water-blocking tape convex right caulking groove 111, the first impurity-preventing water-blocking tape right convex strip i 142 is embedded in the aforementioned middle sill water-blocking tape convex left caulking groove 131, a second impurity-preventing water-blocking tape left convex strip ii 151 is formed on the left side of the length direction of the second impurity-preventing water-blocking tape ii 15, and a second impurity-preventing water-blocking tape right convex strip ii 152 is formed on the right side of the length direction of the second impurity-preventing water-blocking tape ii 15, the second left convex strip II 151 of the impurity-proof water-blocking tape is embedded into the right convex strip caulking groove 132 of the middle beam water-blocking tape, and the second right convex strip II 152 of the impurity-proof water-blocking tape is embedded into the right convex strip caulking groove 121 of the right beam water-blocking tape; a beam support end front stopper 36a is provided in the tank chamber 311 of the tank 31 at a position corresponding to the front side of the beam support end pressure receiving support block 352, and a beam support end rear stopper 36b is provided at a position corresponding to the rear side of the beam support end pressure receiving support block 352, and bottoms of the beam support end front stopper 36a and the beam support end rear stopper 36b are fixed to the tank bottom plate 313; the beam support end 21 of the support beam 2 is inserted between the beam support end front stopper 36a and the beam support end rear stopper 36 b.

A box cover edge beam anchoring plate 323 is fixed on the box cover 32, and the left edge beam 11 and the right edge beam 12 are respectively welded and fixed with the box cover edge beam anchoring plate 323 on the corresponding box cover 32; an intermediate beam fixing mechanism 4 for fixing the intermediate beam 13 to the supporting cross beam 2 is provided at the bottom of the intermediate beam 13 and at a position corresponding to the middle of the supporting cross beam 2 in the longitudinal direction; the first impurity-proof water-blocking tape I14 and the second impurity-proof water-blocking tape II 15 are rubber tapes.

The number of the aforementioned intermediate beams 13 is not limited to one as shown in the present embodiment, for example, in some cases, two or more intermediate beams may be provided, and when the number of the intermediate beams 13 is increased, the intermediate beam anti-trash water-blocking tape is correspondingly provided between two adjacent intermediate beams 13, and the number of the corresponding intermediate beam fixing mechanisms 4 is also increased adaptively.

The center sill fixing mechanism 4 includes a center sill front fixing plate 41, a center sill rear fixing plate 42, a center sill fixing plate connecting plate 43, a supporting beam upper wear-resistant device 44 and a supporting beam lower wear-resistant device 45, the center sill front fixing plate 41 and the center sill rear fixing plate 42 are disposed in a state of corresponding to each other in the front-rear direction, and upper portions thereof are welded and fixed to the bottom surface of the center sill 13, respectively, while a lower portion of the center sill front fixing plate 41 is fixed to a front screw hole 431 provided at the front end of the center sill fixing plate connecting plate 43 by a center sill front fixing plate screw 411, a lower portion of the center sill rear fixing plate 42 is fixed to a rear screw hole 432 provided at the rear end of the center sill fixing plate connecting plate 43 by a center sill rear fixing plate screw 421, a space between the center sill front fixing plate 41 and the center sill rear fixing plate 42 on the opposite sides is configured as a supporting beam fitting chamber 46, and the center sill front fixing plate 41 and the center sill rear fixing plate 42 are on the side facing the supporting beam fitting chamber 46 and on the supporting beam fitting chamber 46 side A fixed plate wear-resistant block 47 is fixed by screws at positions corresponding to each other, the intermediate beam fixed plate web 43 is located below the supporting beam 2, the supporting beam upper wear-resistant device 44 corresponds to the supporting beam fitting cavity 46, the supporting beam upper wear-resistant device 44 includes an intermediate beam pressure-bearing wear-resistant block 441 and an intermediate beam pressure-bearing block 442, the intermediate beam pressure-bearing wear-resistant block 441 is disposed at a lower portion of the intermediate beam pressure-bearing block 442 and the intermediate beam pressure-bearing block 441 and the intermediate beam pressure-bearing block 442 are fixed to the bottom of the intermediate beam 13 at positions corresponding to the supporting beam fitting cavity 46 by supporting beam upper wear-resistant device fixing screws 443, the fixed plate wear-resistant block 47 is in contact with the front side surface and the rear side surface of the supporting beam 2, and the upper surface of the supporting beam 2 is slidably fitted to the intermediate beam pressure-bearing block 441, the supporting beam lower wear-resistant device 45 includes a supporting beam pressure-bearing block 451 and a supporting beam pressure-bearing block 452, a support beam pressure-bearing wear-resistant block 451 superposed on the support beam pressure-bearing block 452, the support beam pressure-bearing block 452 being disposed at the middle in the longitudinal direction of the intermediate beam fixing plate link plate 43 and the support beam pressure-bearing block 452 together with the support beam pressure-bearing wear-resistant block 451 being fixed to the intermediate beam fixing plate link plate 43 at a position corresponding to the support beam 2 by a support beam lower wear-resistant means fixing screw 453, the lower surface of the support beam 2 being slidably fitted to the support beam pressure-bearing wear-resistant block 451; the intermediate beam pressure-receiving block 442 and the support beam pressure-receiving block 452 are polyurethane blocks, and the intermediate beam pressure-receiving wear-resistant block 441, the support beam pressure-receiving wear-resistant block 451, and the fixing plate wear-resistant block 47 are polytetrafluoroethylene blocks, and may be bonded to the intermediate beam pressure-receiving block 442 and the support beam pressure-receiving block 452, respectively, with an adhesive.

In this embodiment, a beam support end stopper 212 is provided in front of the beam support end 21 of the support beam 2, and the beam support end stopper 212 located in front of the beam support end 21 corresponds to a beam support end front stopper end surface 36c on the side of the beam support end front stopper 36a facing away from the tank cavity 311.

In another embodiment, a beam support end stopper 212 is provided on the rear side of the beam support end 21 of the support beam 2, and the beam support end stopper 212 on the rear side of the beam support end 21 corresponds to the beam support end rear stopper end face 36d on the side of the beam support end rear stopper 36b facing away from the tank cavity 311.

In still another embodiment, beam support end stopper posts 212 are provided on the front and rear sides of the beam support end 21 of the support beam 2, the beam support end stopper post 212 on the front side corresponds to the beam support end front stopper end face 36c, and the beam support end stopper post 212 on the rear side corresponds to the beam support end rear stopper end face 36 d.

Still referring to fig. 1 in conjunction with fig. 2, the aforementioned slide return means 211 of the beam support end 21 at the left end of the aforementioned support beam 2 is disposed on the rear side of the beam support end 21, and the aforementioned slide return means 211 of the beam support end 21 at the right end of the support beam 2 is disposed on the front side of the beam support end 21, so as to be disposed in a diagonally disposed relationship, the slide return means 211 disposed on the front side of the beam support end 21 at the right end of the support beam 2 including a spring-defined support plate 2111, a support beam spring seat plate 2112, a support beam slide return spring 2113 and a spring-defined support plate attachment seat 2114, the spring-defined support plate 2111 corresponding to the left side of the support beam slide return spring 2113 and the spring-defined support plate 2111 being attached to the spring-defined support plate attachment seat 2114 by a spring-defined support plate attachment screw 11, the support beam spring seat plate 2112 being attached to the front side of the beam support end 21 of the support beam 2 at a position corresponding to the right side of the support beam slide return spring 2113 Welded, a support beam slide return spring 2113 is provided between the spring limit support plate 2111 and the support beam spring seat plate 2112 on the side opposite thereto, and a spring limit support plate attachment seat 2114 is fixed to the front side of the aforementioned case 31.

A support beam upper wear plate 22 is combined on the upper surface of the support beam 2 along the length direction of the support beam 2, and a support beam lower wear plate 23 is combined on the lower surface along the length direction of the support beam 2, the support beam upper wear plate 22 and the support beam lower wear plate 23 are steel plates, the intermediate beam pressure-bearing wear block 441 is in contact with the support beam upper wear plate 22, and the support beam pressure-bearing wear block 451 is in contact with the support beam lower wear plate 23; support cross member side wear plates 24 are incorporated in the front and rear sides of the center portion of the support cross member 2 at positions corresponding to each other, the fixing plate wear blocks 47 are in contact with the support cross member side wear plates 24, and the support cross member side wear plates 24 are steel plates.

The applicant needs to state that: according to the suggestion that the structural form of bonding and matching the polytetrafluoroethylene block (also called a polytetrafluoroethylene plate) and the polyurethane block as an upgraded rubber damping block (polyurethane is used as the damping block instead of rubber is used as the rubber damping block) in the bridge expansion joint can fully play the advantages of wear resistance, pressure bearing, aging resistance and the like mentioned in the above technical effect column of the applicant, under the motivation, the matching structure of the polytetrafluoroethylene block and the polyurethane block can be completely applied to other occasions needing wear resistance and pressure resistance, for example, can be applied to various mechanical devices as a structural member for replacing rubber, so that the expected shock resistance and wear resistance effect can be embodied.

Referring to fig. 2 in conjunction with fig. 1, left side beam anchor plates 112 are fixed to the left side of the left side beam 11 at intervals, right side beam anchor plates 122 are fixed to the right side of the right side beam 12 at intervals, left side beam anchor rings 1121 are welded to the left side beam anchor plates 112, and right side beam anchor rings 1221 are welded to the right side beam anchor plates 122.

In this embodiment, the steel plate is a stainless steel plate.

As shown in fig. 2, the left side beam anchor ring 1121 and the right side beam anchor ring 1221 are each welded to an embedded steel bar 7. In the state shown in fig. 2, concrete is poured into the aforementioned bridge girder concrete pouring groove 51 and is made flush with the girder surface 52 of the bridge girder 5.

The expansion joint device of the present application deals with the change in width of the expansion joint 6 caused by thermal expansion and contraction. When the width of the expansion joint 6 changes, the supporting beam 2 will have adaptive displacement, because the upper pressing device 33 and the lower supporting device 35 of the beam supporting end of the structural system of the damping mechanism 3 of the utility model are used for the sliding fit of the upper and lower surfaces of the beam supporting end 21 of the supporting beam 2, and the upper and lower surfaces of the middle part of the supporting beam 2 are respectively matched with the upper and lower wear- resistant devices 44 and 45 of the supporting beam, the damping mechanism has excellent damping and wear-resistant effects, and meets the requirement of durable use. Since the specific working principle or function of the bridge expansion joint device belongs to the prior art, the applicant does not need to describe the details.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims (9)

1. A kind of bridge expansion joint apparatus, including the shielding organization of expansion joint (1), the shielding organization of expansion joint (1) locates between length direction of two adjacent bridge girders under using and is preserved with the expansion joint between two adjacent bridge girders; the supporting beam (2) and the damping mechanism (3), the supporting beam (2) is arranged along the length direction of the two adjacent bridge bodies at intervals, the left end and the right end of the supporting beam (2) are respectively formed into beam supporting ends (21), the beam supporting ends (21) are supported on the damping mechanism (3) in a sliding mode, the damping mechanism (3) is arranged on the two adjacent bridge bodies in a state of being matched with each other and corresponding to the left and the right, the damping mechanism (3) is characterized by comprising a box body (31), a box cover (32), a pressing device (33) on the beam supporting ends, a base plate (34) and a beam supporting end lower supporting device (35), the box body (31) is arranged on the bridge bodies in a use state, and a box body cavity (311) of the box body (31) towards the supporting beam (2) is formed into a box body cavity opening (311) for the beam supporting ends (21) of the supporting beam (2) to be inserted into the box body cavity (311) A box shear nail (312) is fixed on one side of the box side wall of the box body (31) and opposite to the box body cavity (311), a box cover (32) is covered on the box body (31) at a position corresponding to the upper part of the box body cavity (311), the box cover shear nail (321) is fixed on one side of the box cover (32) opposite to the box body cavity (311), a beam supporting end upper pressing device (33) comprises a beam supporting end upper pressing wear plate (331) and a beam supporting end upper pressing support block (332), the beam supporting end upper pressing wear plate (331) corresponds to the upper surface of the beam supporting end (21) of the supporting beam (2), the upper surface of the beam supporting end (21) is in sliding fit with the bottom surface of the beam supporting end upper pressing wear plate (331), the beam supporting end upper pressing support block (332) is superposed on the beam supporting end pressing wear plate (331), the backing plate (34) is superposed above the press support block (332) on the beam support end and the backing plate (34) is fixed with the press support block (332) on the beam support end and the press wear plate (331) on the beam support end by the box cover screw (322) arranged on the box cover (32), the beam support end lower support device (35) comprises a beam support end wear support plate (351) and a beam support end bearing block (352), the beam support end wear support plate (351) is superposed on the beam support end bearing block (352) at the position corresponding to the bottom of the beam support end (21), the bottom surface of the beam support end (21) is in sliding fit with the upper surface of the beam support end wear support plate (351), the beam support end bearing block (352) is fixed on the box bottom plate (313) of the box body (31) and the beam support end bearing block (352) are fixed by the box bottom plate screw (3131) arranged on the box bottom plate (313) The bearing end wear-resistant bearing plate (351) is fixed in the box body cavity (311); the expansion joint shielding mechanism (1) is fixed with the middle part of the supporting beam (2) in the length direction and the box cover (32); the left end and the right end of the beam supporting end (21) are respectively connected with the box body (31) through a sliding resetting device (211); the compression support block (332) on the beam support end and the bearing support block (352) on the beam support end are polyurethane blocks, and the compression wear-resisting plate (331) on the beam support end and the wear-resisting support plate (351) on the beam support end are polytetrafluoroethylene plates.

2. The bridge expansion joint installation according to claim 1, wherein the expansion joint shielding mechanism (1) comprises a left side beam (11), a right side beam (12), a middle beam (13), a first impurity-proof water-blocking tape I (14) and a second impurity-proof water-blocking tape II (15), the left side beam (11) and the right side beam (12) are supported on the box cover (32) and fixed with the box cover (32), a left side beam water-blocking tape convex caulking groove (111) is formed on one side of the left side beam (11) facing the middle beam (13) and along the length direction of the left side beam (11), a right side beam water-blocking tape convex caulking groove (121) is formed on one side of the right side beam (12) facing the middle beam (13) and along the length direction of the right side beam (12), the middle beam (13) is located between the left side beam (11) and the right side beam (12), the middle beam (13) is supported in the middle of the supporting cross beam (2) and fixed with the supporting cross beam (2), a left intermediate beam water-blocking tape rib caulking groove (131) is formed along the length direction of the intermediate beam (13) on one side of the intermediate beam (13) facing the left edge beam (11) and at a position corresponding to the left edge beam water-blocking tape rib caulking groove (111), an intermediate beam water-blocking tape rib right caulking groove (132) is formed along the length direction of the intermediate beam (13) on one side of the intermediate beam (13) facing the right edge beam (12) and at a position corresponding to the right edge beam water-blocking tape rib caulking groove (121), a first left impurity-preventing tape rib I (141) is formed on the left side of the first impurity-preventing water-blocking tape I (14) in the length direction, a first right impurity-preventing water-blocking tape rib I (142) is formed on the right side of the first impurity-preventing water-blocking tape I (14) in the length direction, and the first left impurity-preventing water-blocking tape rib I (141) is embedded in the left edge beam water-blocking tape rib (111), the first impurity-proof water-blocking tape right convex strip I (142) is embedded into the middle beam water-blocking tape convex strip left caulking groove (131), the left side of the second impurity-proof water-blocking tape II (15) in the length direction is provided with a second impurity-proof water-blocking tape left convex strip II (151), the right side of the second impurity-proof water-blocking tape II (15) in the length direction is provided with a second impurity-proof water-blocking tape right convex strip II (152), the second impurity-proof water-blocking tape left convex strip II (151) is embedded into the middle beam water-blocking tape convex strip right caulking groove (132), and the second impurity-proof water-blocking tape right convex strip II (152) is embedded into the right side beam water-blocking tape convex strip caulking groove (121); a beam support end front limiting block (36a) is arranged in a box cavity (311) of the box body (31) and at a position corresponding to the front side of the beam support end pressure bearing supporting block (352), a beam support end rear limiting block (36b) is arranged at a position corresponding to the rear side of the beam support end pressure bearing supporting block (352), and the bottoms of the beam support end front limiting block (36a) and the beam support end rear limiting block (36b) are fixed with the box bottom plate (313); the beam support end (21) of the support beam (2) extends between a beam support end front limiting block (36a) and a beam support end rear limiting block (36 b).

3. The bridge expansion joint device according to claim 2, wherein a box cover edge beam anchoring plate (323) is fixed on the box cover (32), and the left edge beam (11) and the right edge beam (12) are respectively welded and fixed with the box cover edge beam anchoring plate (323) on the corresponding box cover (32); an intermediate beam fixing mechanism (4) for fixing the intermediate beam (13) and the supporting cross beam (2) is arranged at the bottom of the intermediate beam (13) and at a position corresponding to the middle of the supporting cross beam (2) in the length direction; the first miscellaneous water-blocking tape I (14) and the second miscellaneous water-blocking tape II (15) are rubber tapes.

4. The bridge expansion joint device according to claim 3, wherein the intermediate beam fixing mechanism (4) comprises an intermediate beam front fixing plate (41), an intermediate beam rear fixing plate (42), an intermediate beam fixing plate connecting plate (43), a supporting beam upper wear-resistant device (44) and a supporting beam lower wear-resistant device (45), the intermediate beam front fixing plate (41) and the intermediate beam rear fixing plate (42) are arranged in a state of corresponding to each other in front and rear, and upper portions thereof are respectively welded and fixed to the bottom surface of the intermediate beam (13), while a lower portion of the intermediate beam front fixing plate (41) is fixed to a front end of the intermediate beam fixing plate connecting plate (43) by an intermediate beam front fixing plate screw (411), a lower portion of the intermediate beam rear fixing plate (42) is fixed to a rear end of the intermediate beam fixing plate connecting plate (43) by an intermediate beam rear fixing plate fixing screw (421), and a space between opposite sides of the intermediate beam front fixing plate (41) and the intermediate beam rear fixing plate (42) is configured as a supporting beam A mating cavity (46), and a fixing plate wear block (47) is fixed by screws on the side of the intermediate beam front fixing plate (41) and the intermediate beam rear fixing plate (42) facing the supporting beam mating cavity (46) and at positions corresponding to each other, the intermediate beam fixing plate web (43) is located below the supporting beam (2), the supporting beam upper wear-resistant device (44) corresponds to the supporting beam mating cavity (46), the supporting beam upper wear-resistant device (44) includes an intermediate beam pressure-bearing wear block (441) and an intermediate beam pressure-bearing block (442), the intermediate beam pressure-bearing wear-resistant block (441) is disposed at the lower portion of the intermediate beam pressure-bearing block (442) and the intermediate beam pressure-bearing wear-resistant block (441) and the intermediate beam pressure-bearing block (442) are fixed to the bottom of the intermediate beam (13) by supporting beam upper wear-resistant device fixing screws (443) at positions corresponding to the supporting beam mating cavity (46), the fixed plate wear-resistant blocks (47) are contacted with the front side and the rear side of the supporting beam (2), the upper surface of the supporting beam (2) is in sliding fit with the middle beam pressure-bearing wear-resisting block (441), the supporting beam lower wear-resisting device (45) comprises a supporting beam pressure-bearing wear-resisting block (451) and a supporting beam pressure-bearing block (452), the supporting beam pressure-bearing wear-resisting block (451) is superposed on the supporting beam pressure-bearing block (452), the supporting beam pressure-bearing block (452) is arranged in the middle of the middle beam fixing plate connecting plate (43) in the length direction, and the supporting beam pressure-bearing block (452) and the supporting beam pressure-bearing wear-resisting block (451) are fixed with the middle beam fixing plate connecting plate (43) by a supporting beam lower wear-resisting device fixing screw (453) at a position corresponding to the supporting beam (2), the lower surface of the supporting beam (2) is in sliding fit with the supporting beam pressure-bearing wear-resistant block (451); the middle beam bearing block (442) and the bearing beam bearing block (452) are polyurethane blocks, and the middle beam bearing wear-resistant block (441), the bearing beam bearing wear-resistant block (451) and the fixing plate wear-resistant block (47) are polytetrafluoroethylene blocks.

5. The bridge expansion joint device according to claim 2, wherein a beam support end limiting column (212) is provided at the front side and/or the rear side of the beam support end (21) of the support beam (2), the beam support end limiting column (212) located at the front side of the beam support end (21) corresponds to the beam support end front limiting block end surface (36c) at the side of the beam support end front limiting block (36a) departing from the box body cavity (311), and the beam support end limiting column (212) located at the rear side of the beam support end (21) corresponds to the beam support end rear limiting block end surface (36d) at the side of the beam support end rear limiting block (36b) departing from the box body cavity (311).

6. The bridge expansion joint apparatus according to claim 1, wherein the slide return means (211) of the girder supporting end (21) located at the left end of the supporting girder (2) is provided at the rear side of the girder supporting end (21), and the slide return means (211) of the girder supporting end (21) located at the right end of the supporting girder (2) is provided at the front side of the girder supporting end (21), the slide return means (211) provided at the front side of the girder supporting end (21) at the right end of the supporting girder (2) includes a spring-defining supporting plate (2111), a supporting girder spring seat plate (2112), a supporting girder slide return spring (2113), and a spring-defining supporting plate connection seat (2114), the spring-defining supporting plate (2111) corresponds to the left side of the supporting girder slide supporting plate return spring (2113) and the spring-defining supporting plate connection seat (2111) is connected to the spring-defining supporting plate connection seat (2114) by a spring-defining connection screw (21111), the supporting beam spring seat plate (2112) is welded and fixed with the front side surface of the beam supporting end (21) of the supporting beam (2) at the position corresponding to the right side of the supporting beam sliding return spring (2113), the supporting beam sliding return spring (2113) is arranged between the opposite sides of the spring limiting supporting plate (2111) and the supporting beam spring seat plate (2112), and the spring limiting supporting plate connecting seat (2114) is fixed with the front side of the box body (31).

7. A bridge expansion joint arrangement according to claim 4, wherein a supporting beam upper wear plate (22) is incorporated at the upper surface of the supporting beam (2) and along the length of the supporting beam (2), and a supporting beam lower wear plate (23) is incorporated at the lower surface and also along the length of the supporting beam (2), the supporting beam upper wear plate (22) and the supporting beam lower wear plate (23) being steel plates; support cross beam side wear plates (24) are respectively combined on the front side and the rear side of the middle part of the support cross beam (2) and at positions corresponding to each other, the fixing plate wear blocks (47) are in contact with the support cross beam side wear plates (24), and the support cross beam side wear plates (24) are steel plates.

8. The bridge expansion and contraction joint device according to claim 2, wherein a left side beam anchor plate (112) is fixed to the left side of the left side beam (11) at intervals, a right side beam anchor plate (122) is fixed to the right side of the right side beam (12) at intervals, a left side beam anchor ring (1121) is welded to the left side beam anchor plate (112), and a right side beam anchor ring (1221) is welded to the right side beam anchor plate (122).

9. The bridge expansion joint assembly of claim 7, wherein said steel plate is stainless steel.

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