CN110528379A - A kind of steel strand wires safeguard structure for long-span beams - Google Patents
A kind of steel strand wires safeguard structure for long-span beams Download PDFInfo
- Publication number
- CN110528379A CN110528379A CN201910797111.2A CN201910797111A CN110528379A CN 110528379 A CN110528379 A CN 110528379A CN 201910797111 A CN201910797111 A CN 201910797111A CN 110528379 A CN110528379 A CN 110528379A
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- steel strand
- strand wires
- girder
- trunnion axis
- block
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of steel strand wires safeguard structures for long-span beams, it is related to girder technical field, its key points of the technical solution are that including bridge pier and girder, multiple support frames are provided between bridge pier, protective device is mounted between the two sides and girder of each support frame, every group of protective device includes multiple through-holes, multiple steel strand wires and tension mechanism；Tension mechanism includes mounting groove, trunnion axis and two driving motors；The both ends of trunnion axis are removably connected to the output shaft of two driving motors respectively；The both ends of each steel strand wires are respectively arranged with connecting plate, and the first driving assembly of multiple groups is equipped in mounting groove；Every group of first driving assembly includes the first lead screw, grip part, worm screw and worm gear；First threads of lead screw is connected to connecting plate.The present invention can play certain protective action, it is thus possible to extend the service life of girder by setting protective device to girder.
Description
Technical field
The present invention relates to girder technical fields, more specifically, it is related to a kind of steel strand wires protection for long-span beams
Structure.
Background technique
Girder refers generally to be erected in rivers,lakes and seas, the structures for making traffic etc. that can smoothly pass through.It is modern to adapt to
The transportation industry of high speed development, girder be also extended to across mountain stream, unfavorable geology or meet other traffic need and set up make
Current more convenient and fast building.Girder is generally made of superstructure, substructure, support and attached structure, top knot
Structure is also known as bridge span structure, is across the primary structure of obstacle；Substructure includes abutment, bridge pier and basis；Support is spanning knot
The load transfer device of the bearing place setting of structure and bridge pier or abutment；Attached structure then refer to transition slab at bridge head, truncated cone banking, shore protection,
Training works etc..
The prior art can refer to the Chinese invention patent application file that Authorization Notice No. is CN110004819A, it discloses
A kind of girder of large-span girder and bridge pier built-in structure and its construction method, it is described including prefabricated girder girder and bridge pier
Bridge pier is steel construction, together with the girder is bolted with bridge pier；Bridge pier upper end is welded with lower flange, the girder
Downside is provided with the upper flange plate on the upside of lower flange, is offered on the girder with upper flange plate upper bolt hole one by one
Corresponding hole, the bolt are sequentially passed through after hole, upper flange plate and lower flange from top to bottom by being located under lower flange
The nut check of side.Bridge pier and girder are passed through ring flange and bolt by the girder and bridge pier built-in structure of large-span girder of the present invention
It is connected as entirety, the transition for realizing the globality and rigidity of structure is can be very good, makes girder and bridge pier in use
Be not in the diseases such as stress concentration phenomenon or bridge pier offset, strengthen the connection of girder and bridge pier, improve girder and bridge
The bearing capacity of pier enhances the anti-seismic performance of girder.
But not set protective device on above-mentioned girder, thus girder is easy to happen change in the case where vehicle rolls for a long time
Shape may make the service life of girder shorten in this way.
Summary of the invention
It is anti-in view of the deficiencies of the prior art, the present invention intends to provide a kind of steel strand wires for long-span beams
Protection structure can play certain protective action, it is thus possible to extend the use of girder by setting protective device to girder
Service life.
To achieve the above object, the present invention provides the following technical scheme that a kind of steel strand wires for long-span beams protect
Structure, including bridge pier and girder are provided with multiple support frames for being used to support girder, each support between the bridge pier
Protective device is mounted between the two sides and girder of frame, protective device described in every group includes vertically being set in turn in support frame
Multiple through-holes of side, the multiple steel strand wires for being arranged in multiple through-holes correspondingly and the side for being installed on girder are for making
The tension mechanism that multiple steel strand wires are tightened；The tension mechanism includes being opened in side at the top of girder and along the length side of girder
To setting mounting groove, be rotationally connected in mounting groove and along the length direction of girder be arranged trunnion axis and be respectively arranged at
Two driving motors at trunnion axis both ends；The both ends of the trunnion axis are removably connected to the defeated of two driving motors respectively
Shaft；The both ends of each steel strand wires are respectively arranged with connecting plate, and multiple groups and the connecting plate are equipped in the mounting groove
It is one-to-one to be used to be drivingly connected the first driving assembly that plate vertically moves；First driving assembly described in every group includes passing through
Thrust bearing is rotationally connected with the first lead screw of installation trench bottom vertically, the grip part being fixed at the top of the first lead screw, passes through spiral shell
The worm gear that bolt is removably connected to the worm screw of trunnion axis and is removably connected to the first lead screw by bolt and engages with worm screw；
First threads of lead screw is connected to connecting plate.
By using above-mentioned technical proposal, start driving motor, the output shaft driving trunnion axis rotation of driving motor is horizontal
Axis rotation drives worm screw rotation, the rotation of worm screw rotate driving worm gear, the rotation of the first lead screw of worm gear rotate driving, the rotation of the first lead screw
It is drivingly connected plate to move down, connecting plate, which moves down, to make steel strand wires tighten；Prestress wire tensioning is existed to girder
Apply a power opposite with load action before bearing load, when girder is by load action, load first has to offset this part
Prestressing force, then girder ability stress, which adds the bearing capacitys of girder, so as to play certain protection to girder
Effect, it is thus possible to extend the service life of girder.
The present invention is further arranged to: the corresponding connecting plate is equipped with the clamping for clamping steel strand wires in mounting groove
Mechanism, the clamp system includes the support plate for being fixed in installation trench bottom, is rotationally connected with the top of support plate and level is set
The second lead screw for setting, the left-hand thread for being respectively arranged at the second lead screw both ends and right-hand thread are threadedly connected to left-hand thread and the right side respectively
Two clamping plates of screw thread and be set between connecting plate and support plate for drive the second lead screw rotation the second driving assembly；
The bottom of two clamping plates is connected with sliding block, is offered at the top of the support plate for sliding in the horizontal direction for sliding block
Sliding slot.
By using above-mentioned technical proposal, the rotation of the second lead screw is driven by the second driving assembly, the rotation of the second lead screw is driven
Dynamic two clamping plates move towards, to can further fix to steel strand wires, it is thus possible to reduce steel strand wires spring and hurt pedestrian
A possibility that.
The present invention is further arranged to: second driving assembly includes the tooth for being fixed in connecting plate side and being vertically arranged
Item and the gear that the second lead screw is removably connected to by bolt；The rack gear and the gear are intermeshed.
By using above-mentioned technical proposal, connecting plate moves down band carry-over bar and moves down, and rack gear moves down driving
Gear rotation, the second lead screw of gear rotate driving rotation, without the additional applied force of operator, it is thus possible to reduce operation
The labor intensity of personnel.
The present invention is further arranged to: the both ends of each steel strand wires are respectively sleeved on protective jacket, the protective jacket
Internal diameter is greater than the outer diameter of steel strand wires, and the protective jacket includes the fixing pipe of support frame side being fixed in by bolt and along fixation
The axial sliding of pipe is connected to adjustable pipe of the fixing pipe far from support frame one end, and the adjustable pipe passes through far from one end of fixing pipe
Bolt is fixed.
It is carried out by using above-mentioned technical proposal by setting fixing pipe and adjustable pipe convenient for the length to protective jacket
It adjusts, so as to make protective jacket be suitable for the steel strand wires of different length；Furthermore by the way that protective jacket is arranged, it can reduce steel strand wires
Jump a possibility that hurting pedestrian after being broken.
The present invention is further arranged to: the inner sidewall of the adjustable pipe is connected with bar blocks, the lateral wall of the fixing pipe
It offers for the strip groove axially slid for bar blocks along fixing pipe.
By using above-mentioned technical proposal, strip groove has guiding role to bar blocks, exists so as to reduce adjustable pipe
A possibility that deviateing along the axial slipping of fixing pipe.
The present invention is further arranged to: the both ends of each through-hole are mounted on tension assembly, tensioning group described in every group
Part includes the fixed frame for being fixed in support frame side, is rotationally connected with fixed frame and horizontally disposed shaft, is socketed on turns respectively
Two torsional springs at axis both ends, the linking arm for being fixed in shaft and being obliquely installed and it is fixed in linking arm leading far from shaft one end
To wheel；The opposite end of two torsional springs is respectively and fixedly connected in the two sides of linking arm, and the end that is located remotely from each other of two torsional springs is distinguished
It is fixed in opposite two insides of fixed frame.
By using above-mentioned technical proposal, when installing steel strand wires, steel strand wires rotate shaft, shaft rotation to torsional spring into
Row compression, torsional spring is in confined state at this time；When steel strand wires using a period of time after being fluffed, at this time in the effect of torsional spring
Under steel strand wires can be made to tighten, consequently facilitating steel strand wires protect girder.
The present invention is further arranged to: the connection machine for connecting trunnion axis is equipped on the output shaft of the driving motor
Structure, the bindiny mechanism include be opened in the output shaft of driving motor close to the recessing groove of trunnion axis one end end face, along trunnion axis
Axial sliding be connected to the link block of recessing groove, be opened in link block close to trunnion axis one end square groove, be fixed in level
Axis close to link block one end and be plugged in the square block of square groove and be installed on link block and be fixed for square shaped block
Fixation kit；It is connected with T-shaped block on the lateral wall of the link block, offers on the inner sidewall of the recessing groove for for T
The T-slot that axially slides of the shape block along trunnion axis.
By using above-mentioned technical proposal, when needing that trunnion axis is driven to rotate, by mobile link block make square block with
Then square groove grafting is fixed by fixation kit square shaped block, consequently facilitating the output shaft of driving motor drives level
Axis rotation, furthermore, when not needing trunnion axis rotation, the output shaft of driving motor can be made to separate with trunnion axis, so as to drop
A possibility that low driving motor causes safety accident because of accidental activation.
The present invention is further arranged to: the fixation kit include along trunnion axis radial slippage be connected to link block insert
It sells, be arranged the jack for being fixed on the block of bolt, being socketed on the spring of bolt and being opened in square block side；The bolt
One end, which is arranged through link block and extends into square groove, is connected with handle with jack grafting, the other end；The block is in hand
Between handle and link block, the both ends of the spring are respectively and fixedly connected in link block and block.
By using above-mentioned technical proposal, when needing makes square block and square groove grafting, inserted by pulling handle to pull
Pin, then can mobile link block make square block and square groove grafting, furthermore, bolt is mobile to drive block mobile, block movement
Spring is stretched, spring is in the state that is stretched at this time；After square block and square groove grafting, release handle is kept off at this time
Block drives bolt and jack grafting under the action of the spring；When needing separates square block with square groove, by pulling handle
Bolt is pulled to separate bolt with jack, then mobile link block；To sum up, rectangular convenient for making by the way that fixation kit is arranged
Block and square groove grafting, it is thus possible to reduce the labor intensity of operator.
The present invention is further arranged to: the top of the mounting groove is sequentially installed with multiple protective covers along its length,
The bottom of the mounting groove is sequentially installed with multiple drainpipes along its length, and the drainpipe is passed through far from one end of mounting groove
Wear the setting of girder side.
It can reduce a possibility that pedestrian makes a misstep by the way that protective cover is arranged by using above-mentioned technical proposal；Pass through
Be arranged drainpipe, can in time by mounting groove rainwater be discharged, it is thus possible to reduce driving motor due to water inlet short circuit can
It can property.
In conclusion the present invention has the advantages that compared with the prior art
1. starting driving motor, the output shaft driving trunnion axis rotation of driving motor, trunnion axis rotation drives worm screw rotation, worm screw
The rotation of rotate driving worm gear, the rotation of the first lead screw of worm gear rotate driving, the first lead screw rotate driving connecting plate are moved down, are connected
Plate, which moves down, so that steel strand wires is tightened；Prestress wire tensioning is to apply one and load before bearing load to girder
Opposite power is acted on, when girder is by load action, load first has to offset this partial prestressing, then girder ability stress, this
Sample increases the bearing capacity of girder, so as to play certain protective action to girder, it is thus possible to extend girder
Service life；
2. connecting plate moves down band carry-over bar and moves down, rack gear moves down the rotation of sliding tooth wheel, gear rotate driving the
Two lead screws rotation, without the additional applied force of operator, it is thus possible to reduce the labor intensity of operator；
3. steel strand wires rotate shaft when installing steel strand wires, torsional spring is compressed in shaft rotation, and torsional spring is in and is pressed at this time
Contracting state；When steel strand wires are using a period of time and after fluff, at this time under the action of torsional spring steel strand wires can tighten, thus
Girder is protected convenient for steel strand wires.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment；
Fig. 2 is the structural schematic diagram of embodiment saliency protective device；
Fig. 3 is the structural schematic diagram of embodiment saliency tension mechanism；
Fig. 4 is the structural schematic diagram of embodiment saliency casing；
Fig. 5 is the structural schematic diagram of embodiment saliency protective cover；
Fig. 6 is the structural schematic diagram of embodiment saliency bindiny mechanism；
Fig. 7 is the structural schematic diagram of embodiment saliency protective jacket；
Fig. 8 is the partial enlarged view in Fig. 5 at A.
In figure: 10, bridge pier；11, girder；12, support frame；2, protective device；21, through-hole；22, steel strand wires；3, tightening machine
Structure；31, mounting groove；32, trunnion axis；33, driving motor；34, connecting plate；35, engaging lug；36, casing；37, the first driving group
Part；371, the first lead screw；372, grip part；373, worm screw；374, worm gear；4, bindiny mechanism；41, recessing groove；411, T-slot；
42, link block；421, T-shaped block；43, square groove；44, square block；45, fixation kit；451, bolt；452, block；453, bullet
Spring；454, jack；455, handle；5, clamp system；51, support plate；511, sliding slot；52, the second lead screw；53, left-hand thread；54,
Right-hand thread；55, clamping plate；551, sliding block；56, the second driving assembly；561, rack gear；562, gear；6, protective jacket；61, fixing pipe；
611, strip groove；612, strut；62, adjustable pipe；621, bar blocks；7, tension assembly；71, fixed frame；72, shaft；73, it turns round
Spring；74, linking arm；75, directive wheel；8, protective cover；9, drainpipe.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.The wherein identical appended drawing reference of identical components
It indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to it is attached
Direction in figure, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from geometric center of specific component
Direction.
Embodiment: a kind of steel strand wires safeguard structure for long-span beams, as shown in Figure 1, including bridge pier 10 and girder
11, be provided with multiple support frames 12 for being used to support girder 11 between bridge pier 10, the two sides of each support frame 12 and girder 11 it
Between be mounted on protective device 2.
As depicted in figs. 1 and 2, every group of protective device 2 includes vertically being set in turn in the multiple of 12 side of support frame to lead to
Hole 21, the multiple steel strand wires 22 for being arranged in multiple through-holes 21 correspondingly and the side for being installed on girder 11 are multiple for making
The tension mechanism 3 that steel strand wires 22 are tightened；As shown in Figure 3 and Figure 4, tension mechanism 3 include be opened in the top of girder 11 side and
Along girder 11 length direction be arranged mounting groove 31, be rotationally connected in mounting groove 31 and along the length direction of girder 11 be arranged
Trunnion axis 32 and be respectively arranged at two driving motors 33 at 32 both ends of trunnion axis；Asynchronous machine can be selected in driving motor 33
Or clockwise and anticlockwise motor；The both ends of trunnion axis 32 are removably connected to the output shaft of two driving motors 33 respectively；Each steel twists
The both ends of line 22 are respectively arranged with connecting plate 34, and the screw top of connecting plate 34 is connected with engaging lug 35, one end of steel strand wires 22
Connect by casing 36 with engaging lug 35, when needing to make steel strand wires 22 and engaging lug 35 affixed, by locking pliers or other
Tool deforms casing 36；Multiple groups and connecting plate 34 are installed correspondingly for being drivingly connected plate 34 in mounting groove 31
The first driving assembly 37 vertically moved；Every group of first driving assembly 37 includes being rotationally connected with peace vertically by thrust bearing
First lead screw 371 of 31 bottom of tankage, the grip part 372 for being fixed in 371 top of the first lead screw are removably connected to by bolt
The worm screw 373 of trunnion axis 32 and the worm gear 374 that the first lead screw 371 is removably connected to by bolt and is engaged with worm screw 373；
Thrust bearing is able to bear biggish load, thus protects convenient for steel strand wires 22 girder 11；First lead screw, 371 screw thread connects
It is connected to connecting plate 34；Worm screw 373 is removably connected to trunnion axis 32, convenient for replacing to the steel strand wires 22 damaged individually.
Start driving motor 33, the output shaft driving trunnion axis 32 of driving motor 33 rotates, and the rotation of trunnion axis 32 drives 373 turns of worm screw
It is dynamic, the rotation of 373 rotate driving worm gear 374 of worm screw, the rotation of 374 the first lead screw of rotate driving 371 of worm gear, the rotation of the first lead screw 371
It is drivingly connected plate 34 to move down, connecting plate 34, which moves down, can be such that steel strand wires 22 tighten；22 tensioning of prestress wire is
Apply a power opposite with load action before bearing load to girder 11, when girder 11 is by load action, load is first
This partial prestressing is offset, then 11 ability stress of girder, which adds the bearing capacitys of girder 11, so as to master
Beam 11 plays certain protective action, it is thus possible to extend the service life of girder 11.
As shown in Figure 5 and Figure 6, the top of mounting groove 31 is sequentially installed with multiple protective covers 8, protective cover along its length
8 can be bolted on mounting groove 31, and the bottom of mounting groove 31 is sequentially installed with multiple drainpipes 9 along its length,
The one end of drainpipe 9 far from mounting groove 31 is arranged through 11 side of girder.By the way that protective cover 8 is arranged, pedestrian can reduce
A possibility that making a misstep；By the way that drainpipe 9 is arranged, the rainwater in mounting groove 31 can be discharged in time, it is thus possible to reduce driving
A possibility that motor 33 is short-circuit due to water inlet.
Bindiny mechanism 4 for connecting trunnion axis 32 is installed, bindiny mechanism 4 includes opening on the output shaft of driving motor 33
Set on recessing groove 41 of the output shaft close to 32 one end end face of trunnion axis of driving motor 33, the axial sliding connection along trunnion axis 32
In recessing groove 41 link block 42, be opened in link block 42 close to 32 one end of trunnion axis square groove 43, be fixed in trunnion axis 32
Close to link block 42 one end and be plugged in the square block 44 of square groove 43 and be installed on link block 42 for square shaped block 44
The fixation kit 45 being fixed；It is connected with T-shaped block 421 on the lateral wall of link block 42, is opened up on the inner sidewall of recessing groove 41
Have for the T-slot 411 axially slid for T-shaped block 421 along trunnion axis 32.When needing that trunnion axis 32 is driven to rotate, pass through
Mobile link block 42 makes square block 44 and 43 grafting of square groove, is then fixed by 45 square shaped block 44 of fixation kit, from
And rotated convenient for the output shaft of driving motor 33 driving trunnion axis 32, furthermore, when not needing the rotation of trunnion axis 32, can make to drive
The output shaft of motor 33 is separated with trunnion axis 32, causes safety accident because of accidental activation so as to reduce driving motor 33
Possibility.
Fixation kit 45 includes being connected to the bolt 451 of link block 42 along the radial slippage of trunnion axis 32, being arranged and be fixed on
The block 452 of bolt 451, the spring 453 for being socketed on bolt 451 and the jack 454 for being opened in 44 side of square block；Bolt
451 one end, which is arranged through link block 42 and extends into square groove 43, is connected with handle 455 with 454 grafting of jack, the other end；
Block 452 is between handle 455 and link block 42, and the both ends of spring 453 are respectively and fixedly connected in link block 42 and block 452.When
It, then can mobile link block by pulling handle 455 to pull bolt 451 when needing to make square block 44 and 43 grafting of square groove
42 make square block 44 and 43 grafting of square groove, furthermore, bolt 451 is mobile to drive block 452 mobile, and block 452 is mobile to spring
453 are stretched, and spring 453 is in the state that is stretched at this time；After square block 44 and 43 grafting of square groove, release handle 455,
Block 452 drives bolt 451 and 454 grafting of jack under the action of spring 453 at this time；When needing to make square block 44 and square groove
When 43 separation, by pulling handle 455 that bolt 451 is pulled to separate bolt 451 with jack 454, then mobile link block 42 is just
It can；To sum up, by the way that fixation kit 45 is arranged, convenient for making square block 44 and 43 grafting of square groove, it is thus possible to reduce operator
Labor intensity.
As shown in Figure 2 and Figure 4, it is correspondingly connected with plate 34 and clamping machine for clamping steel strand wires 22 is installed in mounting groove 31
Structure 5, clamp system 5 include support plate 51, the top for being rotationally connected with support plate 51 and the level for being fixed in 31 bottom of mounting groove
The second lead screw 52 for being arranged, the left-hand thread 53 for being respectively arranged at 52 both ends of the second lead screw and right-hand thread 54 are threadedly connected to respectively
It two clamping plates 55 of left-hand thread 53 and right-hand thread 54 and is set between connecting plate 34 and support plate 51 for driving second
The second driving assembly 56 that thick stick 52 rotates；The bottom of two clamping plates 55 is connected with sliding block 551, and the top of support plate 51 offers
Sliding slot 511 for being slid in the horizontal direction for sliding block 551.The rotation of the second lead screw 52 is driven by the second driving assembly 56, the
Two lead screws, 52 rotate driving, two clamping plates 55 move towards, to can further fix to steel strand wires 22, it is thus possible to
Reduce a possibility that pedestrian is hurt in the spring of steel strand wires 22.
Second driving assembly 56 includes being fixed in 34 side of connecting plate and the rack gear 561 that is vertically arranged and can by bolt
Dismantling connection is in the gear 562 of the second lead screw 52；Rack gear 561 and gear 562 are intermeshed；Gear 562 is removably connected to
Two lead screws 52 can be such that gear 562 separates with rack gear 561 when not needing the rotation of the second lead screw 52, consequently facilitating control clamping plate
55 movement.Connecting plate 34 moves down band carry-over bar 561 and moves down, and rack gear 561 moves down driving gear 562 and rotates,
562 the second lead screw of rotate driving 52 of gear rotation, without the additional applied force of operator, it is thus possible to reduce operator
Labor intensity.
As shown in Figure 2 and Figure 7, the both ends of each steel strand wires 22 are respectively sleeved on protective jacket 6, and the internal diameter of protective jacket 6 is greater than
The outer diameter of steel strand wires 22, protective jacket 6 include the fixing pipe 61 of 12 side of support frame being fixed in by bolt and along fixing pipe 61
Axial sliding be connected to adjustable pipe 62 of the fixing pipe 61 far from 12 one end of support frame；The inner sidewall of adjustable pipe 62 is connected with bar shaped
Block 621, the lateral wall of fixing pipe 61 are offered for the strip groove 611 axially slid for bar blocks 621 along fixing pipe 61；It is living
Dynamic pipe 62 is bolted on protective plate 8 far from one end of fixing pipe 61；It, can for the ease of fixing pipe 61 is fixed
Upper rack posts 612 first are welded far from one end of adjustable pipe 62 in fixing pipe 61, strut 612 is then fixed to by support frame by bolt
On 12.By setting fixing pipe 61 and adjustable pipe 62, it is adjusted convenient for the length to protective jacket 6, so as to make protective jacket 6
Steel strand wires 22 suitable for different length；Furthermore by the way that protective jacket 6 is arranged, it can reduce the wound that jumps after steel strand wires 22 are broken
A possibility that pedestrian.
As shown in Figure 5 and Figure 8, the both ends of each through-hole 21 are mounted on tension assembly 7, and every group of tension assembly 7 includes solid
Be connected to the fixed frame 71 of 12 side of support frame, be rotationally connected with fixed frame 71 and horizontally disposed shaft 72, respectively be socketed on turn
Two torsional springs 73 at 72 both ends of axis, the linking arm 74 for being fixed in shaft 72 and being obliquely installed and be fixed in linking arm 74 far from turn
The directive wheel 75 of 72 one end of axis；The opposite end of two torsional springs 73 is respectively and fixedly connected in the two sides of linking arm 74, the phase of two torsional springs 73
Mutually it is respectively and fixedly connected with far from end in opposite two insides of fixed frame 71.When installing steel strand wires 22, steel strand wires 22 make 72 turns of shaft
Dynamic, torsional spring 73 is compressed in the rotation of shaft 72, and torsional spring 73 is in confined state at this time；When steel strand wires 22 are when using one section
Between and after fluffing, steel strand wires 22 can be made to tighten under the action of torsional spring 73 at this time, consequently facilitating steel strand wires 22 to girder 11 into
Row protection.
Working principle of this kind for the steel strand wires safeguard structure of long-span beams is as follows:
By pulling handle 455 to pull bolt 451, the movement of bolt 451 makes spring 453 be in confined state；Then pass through shifting
Dynamic link block 42 makes square block 44 and 43 grafting of square groove, subsequent release handle 455, at this time effect of the bolt 451 in spring 453
Lower and 454 grafting of jack, so that the output shaft of driving motor 33 can be made to connect with trunnion axis 32；Next starting driving motor
33, the output shaft driving trunnion axis 32 of driving motor 33 rotates, and the rotation of trunnion axis 32 drives worm screw 373 to rotate, and worm screw 373 rotates
Drive worm gear 374 rotate, 374 the first lead screw of rotate driving 371 of worm gear rotation, 371 rotate driving connecting plate 34 of the first lead screw to
Lower movement, connecting plate 34, which moves down, can be such that steel strand wires 22 tighten.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of steel strand wires safeguard structure for long-span beams, it is characterised in that: including bridge pier (10) and girder (11), institute
It states and is provided with multiple support frames (12) for being used to support girder (11), the two sides of each support frame as described above (12) between bridge pier (10)
It is mounted between girder (11) protective device (2), protective device described in every group (2) includes vertically being set in turn in support
Multiple through-holes (21) of frame (12) side, the multiple steel strand wires (22) for being arranged in multiple through-holes (21) correspondingly and installation
The tension mechanism (3) for being used to that multiple steel strand wires (22) be made to tighten in the side of girder (11)；
The tension mechanism (3) includes the side being opened at the top of girder (11) and the peace being arranged along the length direction of girder (11)
Tankage (31) is rotationally connected in mounting groove (31) and along the trunnion axis (32) of the length direction of girder (11) setting and respectively
It is set to two driving motors (33) at trunnion axis (32) both ends；The both ends of the trunnion axis (32) are removably connected to two respectively
The output shaft of a driving motor (33)；The both ends of each steel strand wires (22) are respectively arranged with connecting plate (34), described
Multiple groups are installed in mounting groove (31) and are vertically moved for being drivingly connected plate (34) correspondingly with the connecting plate (34)
The first driving assembly (37)；
First driving assembly (37) described in every group includes be rotationally connected with mounting groove (31) bottom vertically by thrust bearing the
One lead screw (371), the grip part (372) being fixed at the top of the first lead screw (371) are removably connected to trunnion axis by bolt
(32) worm screw (373) and the worm gear that the first lead screw (371) is removably connected to by bolt and is engaged with worm screw (373)
(374)；First lead screw (371) is threadedly connected to connecting plate (34).
2. a kind of steel strand wires safeguard structure for long-span beams according to claim 1, it is characterised in that: described in corresponding
Connecting plate (34) is equipped with the clamp system (5) for clamping steel strand wires (22), the clamp system (5) in mounting groove (31)
Including the top and horizontally disposed for being fixed in the support plate (51) of mounting groove (31) bottom, being rotationally connected with support plate (51)
Two lead screws (52), the left-hand thread (53) for being respectively arranged at the second lead screw (52) both ends and right-hand thread (54) are threadedly connected to respectively
Two clamping plates (55) of left-hand thread (53) and right-hand thread (54) and being set between connecting plate (34) and support plate (51) are used for
The second driving assembly (56) for driving the second lead screw (52) to rotate；The bottom of two clamping plates (55) is connected with sliding block
(551), the sliding slot (511) for sliding in the horizontal direction for sliding block (551) is offered at the top of the support plate (51).
3. a kind of steel strand wires safeguard structure for long-span beams according to claim 2, it is characterised in that: described second
Driving assembly (56) includes being fixed in connecting plate (34) side and the rack gear (561) that is vertically arranged and detachably being connected by bolt
It is connected to the gear (562) of the second lead screw (52)；The rack gear (561) and the gear (562) are intermeshed.
4. a kind of steel strand wires safeguard structure for long-span beams according to claim 1, it is characterised in that: each described
The both ends of steel strand wires (22) are respectively sleeved on protective jacket (6), and the internal diameter of the protective jacket (6) is greater than the outer diameter of steel strand wires (22),
The protective jacket (6) includes the fixing pipe (61) that support frame (12) side is fixed in by bolt and the axis along fixing pipe (61)
It is connected to the adjustable pipe (62) of fixing pipe (61) far from support frame (12) one end to sliding, the adjustable pipe (62) is far from fixing pipe
(61) one end is bolted.
5. a kind of steel strand wires safeguard structure for long-span beams according to claim 4, it is characterised in that: the activity
The inner sidewall of pipe (62) is connected with bar blocks (621), and the lateral wall of the fixing pipe (61) is offered for for bar blocks (621)
Along the strip groove (611) of fixing pipe (61) axially slid.
6. a kind of steel strand wires safeguard structure for long-span beams according to claim 1, it is characterised in that: each described
The both ends of through-hole (21) are mounted on tension assembly (7), and tension assembly described in every group (7) includes being fixed in support frame (12) side
Fixed frame (71), be rotationally connected with fixed frame (71) and horizontally disposed shaft (72), be socketed on shaft (72) both ends respectively
Two torsional springs (73), the linking arm (74) that is fixed in shaft (72) and is obliquely installed and be fixed in linking arm (74) far from turning
The directive wheel (75) of axis (72) one end；The opposite end of two torsional springs (73) is respectively and fixedly connected in the two sides of linking arm (74), and two
The end that is located remotely from each other of a torsional spring (73) is respectively and fixedly connected in opposite two insides of fixed frame (71).
7. a kind of steel strand wires safeguard structure for long-span beams according to claim 1, it is characterised in that: the driving
Bindiny mechanism (4) for connecting trunnion axis (32) is installed, the bindiny mechanism (4) includes opening on the output shaft of motor (33)
Set on recessing groove (41) of the output shaft close to trunnion axis (32) one end end face of driving motor (33), the axial direction along trunnion axis (32)
The square groove that sliding is connected to the link block (42) of recessing groove (41), is opened in link block (42) close to trunnion axis (32) one end
(43), trunnion axis (32) are fixed in close to the one end of link block (42) and are plugged in the square block (44) and peace of square groove (43)
The fixation kit (45) that square shaped block (44) are fixed is used for loaded on link block (42)；On the lateral wall of the link block (42)
Be connected with T-shaped block (421), offered on the inner sidewall of the recessing groove (41) for for T-shaped block (421) along trunnion axis (32)
The T-slot (411) axially slid.
8. a kind of steel strand wires safeguard structure for long-span beams according to claim 7, it is characterised in that: the fixation
Component (45) includes being connected to the bolt (451) of link block (42) along the radial slippage of trunnion axis (32), being arranged and be fixed on bolt
(451) block (452), the spring (453) for being socketed on bolt (451) and the jack for being opened in square block (44) side
(454)；One end of the bolt (451) is arranged and extends into square groove (43) through link block (42) inserts with jack (454)
It connects, the other end is connected with handle (455)；The block (452) is between handle (455) and link block (42), the spring
(453) both ends are respectively and fixedly connected in link block (42) and block (452).
9. a kind of steel strand wires safeguard structure for long-span beams according to claim 1, it is characterised in that: the installation
The top of slot (31) is sequentially installed with multiple protective covers (8) along its length, and the bottom of the mounting groove (31) is along its length
Direction is sequentially installed with multiple drainpipes (9), and the drainpipe (9) runs through girder (11) side far from the one end of mounting groove (31)
Setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910797111.2A CN110528379B (en) | 2019-08-27 | 2019-08-27 | Steel strand protection structure for large-span beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910797111.2A CN110528379B (en) | 2019-08-27 | 2019-08-27 | Steel strand protection structure for large-span beam |
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| CN110528379A true CN110528379A (en) | 2019-12-03 |
| CN110528379B CN110528379B (en) | 2021-07-13 |
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