CN102926324A - Multifunctional rigidity adjustable speed locking force transmission devices - Google Patents
Multifunctional rigidity adjustable speed locking force transmission devices Download PDFInfo
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- CN102926324A CN102926324A CN2012104837942A CN201210483794A CN102926324A CN 102926324 A CN102926324 A CN 102926324A CN 2012104837942 A CN2012104837942 A CN 2012104837942A CN 201210483794 A CN201210483794 A CN 201210483794A CN 102926324 A CN102926324 A CN 102926324A
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- 230000005540 biological transmission Effects 0.000 title abstract 5
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 25
- 239000003921 oil Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The invention relates to a connecting device of railroad bridges, in particular to multifunctional rigidity adjustable speed locking force transmission devices for connecting adjacent bridge spans of the railroad bridges. Each multifunctional rigidity adjustable speed locking force transmission device comprises a piston cylinder and a buffer device fixedly mounted at the bottom end of a cylinder barrel; the piston cylinder comprises the cylinder barrel, a first cylinder cover, a piston, a piston rod and hydraulic oil; the piston is used for dividing the space inside the cylinder barrel into a first chamber and a second chamber; and clearance exists between the piston and the cylinder barrel, and the hydraulic oil can flow between the first chamber and the second chamber through the clearance. The multifunctional rigidity adjustable speed locking force transmission devices can distribute horizontal force to at least three adjacent bridge piers under the action of the horizontal force by the traction for braking or starting a train, thus, the safety problem caused by the increase in the freight volume of the train can be solved by only reinforcing one of every three bridge piers after the multifunctional rigidity adjustable speed locking force transmission devices are additionally arranged.
Description
Technical field
The present invention relates to a kind of linkage of railroad bridge, particularly relate to a kind of multi-functional rigidity adjustable-speed locking load transfer device that the adjacent bridge mid-span of railroad bridge is got up.
Background technology
When building a railway or light rail, usually can run into rivers, mountain valley, highway or intersect with an other railway, in order to allow railway cross over obstacle on these landform, often need to build various railroad bridges.The chief component of general bridge comprises spanning, bridge pier.Spanning is Oil pipeline, and bridge pier is supporting construction.
With respect to highway bridge, railroad bridge has the characteristics such as load is large, and impact force is large, and rate of traffic flow is large.Train railroad bridge start or braking, when slowing down, horizontal tripping force or brake force directly act on the spanning, by spanning horizontal applied force are delivered to bridge pier again.Therefore, the rigidity of bridge pier and supporting capacity are to ensureing that train operational safety is vital.Especially in recent years, along with the gradually increase of freight volume, in order to guarantee the safety of railroad bridge, need to carry out strengthening reconstruction to existing railroad bridge, if each bridge pier is carried out strengthening reconstruction, will drop into a large amount of manpower and materials, construction costs is higher, and the duration is longer.
Summary of the invention
In view of this, be necessary for above-mentioned problem, a kind of multi-functional rigidity adjustable-speed locking load transfer device is provided.This multi-functional rigidity adjustable-speed locking load transfer device is installed on both sides, railroad bridge shrinkage joint, and two adjacent spannings are coupled together.Under the temperature load effect, this device can be out of shape by free-extension, does not affect the release of the thermal stresses of spanning.Train is when railroad bridge braking, deceleration or startup, and this multi-functional rigidity adjustable-speed locking load transfer device can be assigned to horizontal applied force on three adjacent bridge piers at least.Like this, after adding this multi-functional rigidity adjustable-speed locking load transfer device, per three or three above bridge piers are reinforced one of them can solve the safety problem that the increase owing to the train freight volume causes, thereby saves a large amount of manpower and materials, reduce construction costs, the reduction of erection time.
The present invention is by the following technical solutions:
A kind of multi-functional rigidity adjustable-speed locking load transfer device comprises: piston rod is fixedly installed in the buffer of cylinder barrel bottom; Described piston rod comprises cylinder barrel, the first cylinder cap, piston, piston rod, hydraulic oil; Described piston with space in the cylinder barrel every being divided into the first chamber and the second chamber; Have the gap between described piston and the cylinder barrel, described hydraulic oil can flow between the first chamber and the second chamber by described gap; Described buffer available buffer acts on the axial impact force of described multi-functional rigidity adjustable-speed locking load transfer device.
Described multi-functional rigidity adjustable-speed locking load transfer device is installed on two rear flank, railroad bridge shrinkage joint, spanning expands owing to the objective condition such as climate temperature, landform change or during shrinkage strain, the hydraulic oil of the first chamber or the second chamber slowly flows in another chamber by described gap, and piston rod is made stretching motion; Multi-functional rigidity adjustable-speed locking load transfer device does not affect spanning and deforms.And do the time spent at the horizontal applied force of train braking or starting traction, there is higher relative motion in the part spanning; Gap sealed effect is played in gap between piston and the cylinder barrel at this moment, piston rod is transformed into a stiff member, described multi-functional rigidity adjustable-speed locking load transfer device changes the load transfer device with certain rigidity into, and the horizontal applied force that spanning is subject to is assigned on three bridge piers at least; The distribution condition of the active force that described bridge pier is subject to is relevant with the rigidity of buffer, and the rigidity of described buffer can be selected according to concrete design object.
Further, described multi-functional rigidity adjustable-speed locking load transfer device also comprises sealing device, described sealing device with the cylinder barrel of buffer and piston rod, the first cylinder cap, piston etc. all bag be contained in wherein; Described sealing device comprises the circular sleeve of an end opening, with the shrouding of circular sleeve closure of openings; Described buffer one end is fixedly connected with the bottom of cylinder barrel, and the other end is fixedly connected with the circular sleeve bottom; Described shrouding is provided with the through hole that can allow piston rod pass through.Described sealing device can reduce external environment condition to the erosion of piston rod and buffer.
Further, described multi-functional rigidity adjustable-speed locking load transfer device also comprises the connecting portion that links to each other for the spanning end, and described connecting portion is installed on an end that is positioned at the sealing device outside of described circular sleeve bottom and piston rod.
Further, described connecting portion is U-shaped steel.
Further, also be provided with buffer between described the first cylinder cap and the shrouding, this buffer one end is fixed on the first cylinder cap or the shrouding, and the other end freely.After setting up this buffer, can prevent that the first cylinder cap and shrouding from bumping and cause damage.
Further, described buffer is buffer spring.
Further, have the gap between described cylinder barrel and the circular sleeve, described cylinder barrel outer circumference surface or circular sleeve inner peripheral surface are provided with the tetrafluoroethene layer.Described tetrafluoroethene layer reduces the sliding friction between cylinder body and the circular sleeve.Described circular sleeve plays guiding and supporting role to cylinder barrel.
Further, described cylinder barrel and the first cylinder cap adopt the connected mode of internal thread, interfere to avoid hydraulic cylinder and circular sleeve to produce.
Further, described cylinder barrel comprises the second cylinder cap, circular cylinder, and described the second cylinder cap is fixedly connected on an end of circular cylinder; Described the second cylinder cap is provided with the through hole that cooperates with piston rod; In the reciprocating process of described piston rod, the two ends of piston rod all are positioned at outside the cylinder body.
Further, the gap width between described piston and the cylinder barrel is 0.01～0.05mm.
Further, the outer round surface of described piston also is provided with ring-shaped groove.The groove width of described ring-shaped groove is 0.3～0.5mm, and groove depth is that 0.5～1.0mm, spacing are 2～5mm.Ring-shaped groove makes piston have the Self-resetting performance, can reduce frictional force between piston and the cylinder barrel, improve sealing performance.
Further, described hydraulic oil is silicone oil.
Further, described piston rod also comprises the first fairlead that is positioned at cylinder barrel and is fixed on the first cylinder cap one side, and described the first fairlead is socketed on the piston rod, and described the first fairlead plays guiding and supporting role when piston rod moves reciprocatingly.
Further, described piston rod also comprises the second fairlead that is positioned at the cylinder barrel bottom, and described piston is fixed between the piston rod two ends, and described fairlead is socketed on the piston rod.In train starting or when braking,, the horizontal applied force that described multi-functional rigidity adjustable-speed locking load transfer device bears is larger, set up the second fairlead after, can guarantee the axiality of cylinder barrel and piston rod and then the frictional force between reduction piston and the cylinder barrel.
Further, described fairlead inboard is provided with annular groove, is provided with in the described annular groove be used to the sealing ring that prevents that hydraulic oil from leaking out along the interval between piston rod and the fairlead.
Further, described fairlead is made take high-intensity resin as material.
Further, offer the first oil inlet passage, the second oil inlet passage on the described piston rod; Described the first oil inlet passage one end communicates with the first chamber, and the other end can communicate with the external world; Described the second oil inlet passage one end communicates with the second chamber, and the other end can communicate with the external world.
Further, described piston rod offers the first exhaust passage, the second exhaust passage; Described the first exhaust passage one end communicates with the downtake pipe that is fixed on piston rod, and the other end can communicate with the external world; Described the second exhaust passage one end communicates with the second exhaust pipe that is fixed on piston rod, and the other end can communicate with the external world; Described downtake pipe is positioned at the first chamber, and described second exhaust pipe is positioned at the second chamber.By described the first exhaust passage, the second exhaust passage can be gone out the air exhausting in the first chamber, the second chamber.
Described piston rod also comprises dust ring, and described dust ring is fixed the first cylinder cap outside, and is socketed on the piston rod.Described dust ring can prevent from falling into the dust of piston rod, is brought in the cylinder body during along with the stretching motion of piston rod.
The beneficial effect of the multi-functional rigidity adjustable-speed locking of the present invention load transfer device is as follows:
1, this multi-functional rigidity adjustable-speed locking load transfer device is installed on two rear flank, railroad bridge shrinkage joint, when the objective condition such as climate temperature, landform change, spanning can expand or shrinkage strain, and is not subjected to the restriction of multi-functional rigidity adjustable-speed locking load transfer device.
2, do the time spent at the horizontal applied force of train braking or starting traction, this multi-functional rigidity adjustable-speed locking load transfer device can be assigned to horizontal applied force at least three adjacent bridge piers; After adding this multi-functional rigidity adjustable-speed locking load transfer device, per three or three above bridge piers are reinforced one of them can solve the safety problem that the increase owing to the train freight volume causes, thereby save a large amount of manpower and materials, reduce construction costs, the reduction of erection time.
Description of drawings
Fig. 1 is wherein a kind of arrangement diagram that is installed on behind the railroad bridge of the multi-functional rigidity adjustable-speed of the present invention locking load transfer device.
Fig. 2 is the first embodiment sectional view of the multi-functional rigidity adjustable-speed locking of the present invention load transfer device.
Fig. 3 is the second embodiment sectional view of the multi-functional rigidity adjustable-speed locking of the present invention load transfer device.
Fig. 4 is the 3rd embodiment sectional view of the multi-functional rigidity adjustable-speed locking of the present invention load transfer device.
Wherein: 10-multi-functional rigidity adjustable-speed locking load transfer device, 20-spanning, 30-bridge pier, 1-cylinder barrel, the 2-the first cylinder cap, 3-piston, 4-piston rod, the 6-the first chamber, the 7-the second chamber, the 8-the first buffer spring, 9-circular sleeve, 11-shrouding, 12-connecting portion, 13-fairlead, 14-annular groove, 15-sealing ring, 16-ring-shaped groove, 17-dust ring, the 18-the second buffer spring, the 19-the second cylinder cap, 21-circular cylinder, the 22-the first oil inlet passage, the 23-the second oil inlet passage, the 24-the first exhaust passage, the 26-the second exhaust passage, 27-downtake pipe, 28-second exhaust pipe.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is described further below in conjunction with accompanying drawing and embodiment.
Figure 1 shows that wherein a kind of arrangement diagram that is installed on behind the railroad bridge of the multi-functional rigidity adjustable-speed of the present invention locking load transfer device 10.Described multi-functional rigidity adjustable-speed locking load transfer device 10 is installed on both sides, railroad bridge shrinkage joint.Described every adjacent three spannings 20 are one group, and the multi-functional rigidity adjustable-speed locking of spanning 20 usefulness between same group load transfer device 10 couples together, and is separate between every group.
Figure 2 shows that the multi-functional rigidity adjustable-speed locking of the present invention load transfer device 10 first embodiment.Described multi-functional rigidity adjustable-speed locking load transfer device 10 comprises single-piston-rod hydraulic cylinder, is fixedly installed in the buffer of cylinder barrel 1 bottom; Described single-piston-rod hydraulic cylinder comprises cylinder barrel 1, the first cylinder cap 2, piston 3, piston rod 4, silicone oil; Every being divided into the first chamber 6 and the second chamber 7, described the first chamber 6 is positioned at the left side of the second chamber 7 to described piston 3 with cylinder barrel 1 interior space; Have the gap between described piston 3 and the cylinder barrel 1, described hydraulic oil can flow between the first chamber 6 and the second chamber 7 by described gap.
Described buffer is used for cushioning effect in the axial impact force of described multi-functional rigidity adjustable-speed locking load transfer device 10.Above-mentioned buffer is that the rigidity of the first buffer spring 8, the first buffer springs 8 can design according to the working condition of railroad bridge.Should be appreciated that, described buffer can also be other suitable buffer.
Described multi-functional rigidity adjustable-speed locking load transfer device 10 is installed on two rear flank at railroad bridge shrinkage joint, spanning 20 expands owing to the objective condition such as climate temperature, landform change or during shrinkage strain, the hydraulic oil of the first chamber 6 or the second chamber 7 slowly flows in another chamber by described gap, piston rod 4 is made stretching motion, does not affect spanning 20 and deforms.And do the time spent at the horizontal applied force of train braking or starting traction, there is the high speed relative motion of moment between the part spanning 20.Meanwhile, piston 3 is higher with cylinder barrel 1 speed of related movement, and gap sealed effect is played in the gap between piston 3 and the cylinder barrel 1, and this moment, single-piston-rod hydraulic cylinder was as a stiff member.Under the effect of single-piston-rod hydraulic cylinder and the first buffer spring 8, horizontal applied force is assigned to four adjacent bridge piers 30.
Clearance seal is a kind of encapsulating method commonly used, it relies on the minim gap between relative motion part fitting face to come Leakage prevention, by annulus axial flow theory as can be known, leakage rate is directly proportional with the cube in gap, therefore can adjust leakage with the way of adjusting play.When the gap width between above-mentioned piston 3 and the cylinder barrel 1 is 0.01～0.05mm, can reach the requirement of above-mentioned sealing.
When described multi-functional rigidity adjustable-speed locking load transfer device 10 is installed, the free end of the first buffer spring 8 and piston rod 4 is fixedly connected with the spanning 20 of both sides, shrinkage joint respectively gets final product.
Figure 3 shows that the multi-functional rigidity adjustable-speed locking of the present invention load transfer device 10 second embodiment.Described multi-functional rigidity adjustable-speed locking load transfer device 10 comprises single-piston-rod hydraulic cylinder, is fixedly installed in the first buffer spring 8 of cylinder barrel 1 bottom; Described single-piston-rod hydraulic cylinder comprises cylinder barrel 1, the first cylinder cap 2, piston 3, piston rod 4, hydraulic oil; Every being divided into the first chamber 6 and the second chamber 7, described the first chamber 6 is positioned at the left side of the second chamber 7 to described piston 3 with cylinder barrel 1 interior space; Have the gap between described piston 3 and the cylinder barrel 1, described hydraulic oil can flow between the first chamber 6 and the second chamber 7 by described gap.
The outer round surface of described piston 3 offers ring-shaped groove 16.The groove width of described ring-shaped groove 16 is 0.3～0.5mm, and groove depth is that 0.5.～1.0mm, spacing are 2～5mm.The effect of described ring-shaped groove 16 is as follows:
(a) make piston 3 have the Self-resetting performance.Because geometry and the coaxiality error of piston 3, the mal-distribution of operating pressure oil in seal clearance will form a radial imbalance force, and it increases the frictional force between piston 3 and the cylinder barrel 1.Behind the open loop shape groove 16, so that radially oil pressure tends to balance, piston 3 can automatic centering, thereby reduces the frictional force between piston 3 and the cylinder barrel 1.Because the leakage of circumferential weld is more much smaller than eccentric circumferential weld with one heart, the leakage rate that the centering of piston 3 has been reduced hydraulic oil has improved sealing performance;
(b) fluid is stored in the compensating groove, makes piston 3 energy self-lubricates, and then reduces the frictional force between piston 3 and the cylinder barrel 1.
Described single-piston-rod hydraulic cylinder also comprises the fairlead 13 that is positioned at cylinder barrel 1 and is fixed on the first cylinder cap 2 one sides, and described fairlead 13 is provided with the through hole with piston rod 4 equal diameters, and fairlead 13 plays guiding and supporting role when piston rod 4 moves reciprocatingly.After fairlead 13 wearing and tearing, can be directly with its replacing, and do not need with replacings the first cylinder cap 2 the reduction maintenance cost.Described fairlead 13 is made take high-intensity resin as raw material.Described fairlead 13 inboards are provided with annular groove 14, are provided with in the described annular groove 14 be used to the sealing ring 15 that prevents that hydraulic oil from leaking out along the interval between piston rod 4 and the fairlead 13.
Described single-piston-rod hydraulic cylinder also comprises dust ring 17, and described dust ring 17 is fixed the first cylinder cap 2 outsides, and is socketed on the piston rod 4.Described dust ring 17 can prevent from falling into the dust of piston rod 4, is brought in the cylinder body during along with the stretching motion of piston rod 4, increases the frictional force between fairlead 13 and piston rod 4, piston 3 and the cylinder barrel 1.
Described multi-functional rigidity adjustable-speed locking load transfer device 10 also comprises sealing device, described sealing device with the cylinder barrel 1 of the first buffer spring 8 and single-piston-rod hydraulic cylinder, the first cylinder cap 2, piston 3 etc. all bag be contained in wherein; Described sealing device comprises the circular sleeve 9 of an end opening, with the shrouding 11 of circular sleeve 9 closure of openings; Described the first buffer spring 8 one ends are fixedly connected with the bottom of cylinder barrel 1, and the other end is free, and contact with circular sleeve 9 bottoms; Described shrouding 11 is provided with the through hole with piston rod 4 equal diameters, and described piston rod 4 passes this through hole.Described sealing device places the assemblies such as the first buffer spring 8, cylinder barrel 1, the first cylinder cap 2, piston 3 in the space of a sealing.Can reduce external environment condition to the erosion of the assemblies such as the first buffer spring 8, cylinder barrel 1, the first cylinder cap 2, piston 3, as prevent the erosion of rainwater, dust, microorganism.
The external diameter of described cylinder barrel 1 equates with the internal diameter of circular sleeve 9,1 guiding of 9 pairs of cylinder barrels of described circular sleeve and supporting role.Described cylinder barrel 1 and the first cylinder cap 2 adopt the connected mode of internal thread.Because the external diameter of cylinder barrel 1 equates with the internal diameter of circular sleeve 9, the connected mode of cylinder barrel 1 and the first cylinder cap 2 employing internal threads can avoid single-piston-rod hydraulic cylinder and circular sleeve 9 to interfere, thereby can guarantee that 9 pairs of cylinder barrels 1 of circular sleeve play the guiding role.
In order to prevent that cylinder body and shrouding 11 from bumping and cause damage, also be provided with the second buffer spring 18 between described the first cylinder cap 2 and the shrouding 11, described the second buffer spring 18 1 ends are fixed on the first cylinder cap 2, and the other end is freely.
Described multi-functional rigidity adjustable-speed locking load transfer device 10 also comprises the connecting portion 12 that links to each other for the end with spanning 20, and described connecting portion 12 is installed on the free end of described circular sleeve 9 bottoms and piston rod 4.Described connecting portion 12 is U-shaped steel.
Figure 4 shows that the multi-functional rigidity adjustable-speed locking of the present invention load transfer device 10 the 3rd embodiment.Described multi-functional rigidity adjustable-speed locking load transfer device 10 comprises that sealing device, part are positioned at hydraulic cylinder, the buffer spring of sealing device inside.Assembly corresponding among described sealing device and the second embodiment is identical, is not just describing in detail at this.
Described hydraulic cylinder comprises: circular cylinder 21, the first cylinder cap 2, the second cylinder cap 19, piston 3, piston rod 4, silicone oil; Described the first cylinder cap 2, the second cylinder cap 19 are separately fixed at circular cylinder 21 two ends; Be equipped with the through hole that allows piston rod 4 pass on the first cylinder cap 2, the second cylinder cap 19.In the reciprocating process of described piston rod 4, the two ends of piston rod 4 all are positioned at outside the cylinder body.When train starting or braking, the horizontal applied force that described multi-functional rigidity adjustable-speed locking load transfer device 10 bears is larger, two through hole has guide effect to piston rod 4, can strengthen the axiality of circular cylinder 21 and piston rod 4, and then reduces the frictional force between piston 3 and the circular cylinder 21.
For the maintenance cost that reduces hydraulic cylinder, further guarantee the axiality of circular cylinder 21 and piston rod 4, described the first cylinder cap 2 and the second cylinder cap 19 inboards are equipped with fairlead 13, and described fairlead 13 is socketed on the piston rod 4.After fairlead 13 wearing and tearing, can be directly with its replacing, and do not need the replacing cylinder cap.Described fairlead 13 inboards are provided with annular groove 14, are provided with in the described annular groove 14 be used to the sealing ring 15 that prevents that hydraulic oil from leaking out along the interval between piston rod 4 and the fairlead 13.
Every being divided into the first chamber 6 and the second chamber 7, described the first chamber 6 is positioned at the left side of the second chamber 7 to described piston 3 with circular cylinder 21 interior spaces; Have the gap between described piston 3 and the circular cylinder 21, described hydraulic oil can flow between the first chamber 6 and the second chamber 7 by described gap.In order to reduce the friction between piston 3 and the circular cylinder 21, the outer round surface of described piston 3 offers ring-shaped groove 16.
There is certain gap in described circular cylinder 21 with circular sleeve 9, and outer surface of cylinder block scribbles polytetrafluoroethylene floor (not shown in FIG.), thereby guarantees can mutually slide between sleeve and the circular cylinder 21.21 guiding of 9 pairs of circular cylinders of described circular sleeve and supporting role.
Described buffer spring comprises the first buffer spring 8, the second buffer spring 18; Described the first buffer spring 8 one ends are fixed on the second cylinder cap 19, and the other end freely; Described the second buffer spring 18 1 ends are fixed on the shrouding 11, and the other end freely.
Offer the first oil inlet passage 22, the second oil inlet passage 23 on the described piston rod 4; Described the first oil inlet passage 22 1 ends communicate with the first chamber 6, and the other end can communicate with the external world; Described the second oil inlet passage 23 1 ends communicate with the second chamber 7, and the other end can communicate with the external world.Described piston rod 4 also offers 24, the second exhaust passages 26, the first exhaust passage; Described the first exhaust passage 24 1 ends communicate with the downtake pipe 27 that is fixed on piston rod 4, and the other end can communicate with the external world; Described the second exhaust passage 26 1 ends communicate with the second exhaust pipe 28 that is fixed on piston rod 4, and the other end can communicate with the external world; Described downtake pipe 27 is positioned at the first chamber 6, and described second exhaust pipe 28 is positioned at the second chamber 7.Air exhausting in the first chamber 6, the second chamber 7 can be gone out by 24, the second exhaust passages 26, described the first exhaust passage.Also be provided with the switching device (not shown in FIG.) that described oil inlet passage, inlet channel are stopped up on the described piston rod 4.Hydraulic cylinder is in installation process or park for a long time when reworking, and can infiltrate air in the hydraulic cylinder, and in order to prevent that creeping from appearring in hydraulic cylinder, the abnormalities such as noise and heating need the Bas Discharged in the chamber and add silicone oil.
Described multi-functional rigidity adjustable-speed locking load transfer device 10 also comprises the connecting portion 12 that links to each other for the end with spanning 20, and described connecting portion 12 is installed on the free end of described circular sleeve 9 bottoms and piston rod 4.Described connecting portion 12 is U-shaped steel.
The above embodiment has only expressed three kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (16)
1. multi-functional rigidity adjustable-speed locking load transfer device is characterized in that: piston rod is fixedly installed in the buffer of cylinder barrel bottom; Described piston rod comprises cylinder barrel, the first cylinder cap, piston, piston rod, hydraulic oil; Described piston with space in the cylinder barrel every being divided into the first chamber and the second chamber; Have the gap between described piston and the cylinder barrel, described hydraulic oil can flow between the first chamber and the second chamber by described gap; Described buffer available buffer acts on the axial impact force of described multi-functional rigidity adjustable-speed locking load transfer device.
2. multi-functional rigidity adjustable-speed locking load transfer device according to claim 1 is characterized in that: also comprise sealing device, described sealing device with the cylinder barrel of buffer and piston rod, the first cylinder cap, piston etc. all bag be contained in wherein; Described sealing device comprises the circular sleeve of an end opening, with the shrouding of circular sleeve closure of openings; Described buffer one end is fixedly connected with the bottom of cylinder barrel, and the other end freely; Described shrouding is provided with the through hole that can allow piston rod pass through.
3. multi-functional rigidity adjustable-speed according to claim 2 locks load transfer device, it is characterized in that: also comprise the connecting portion that links to each other for the spanning end, described connecting portion is installed on an end that is positioned at the sealing device outside of described circular sleeve bottom and piston rod; Described connecting portion is U-shaped steel.
4. multi-functional rigidity adjustable-speed according to claim 2 locks load transfer device, it is characterized in that: also be provided with buffer between described the first cylinder cap and the shrouding, this buffer one end is fixed on the first cylinder cap or on the shrouding, the other end freely; Described buffer is buffer spring.
5. multi-functional rigidity adjustable-speed according to claim 2 locks load transfer device, and it is characterized in that: have the gap between described cylinder barrel and the circular sleeve, described cylinder barrel outer circumference surface or circular sleeve inner peripheral surface are provided with the tetrafluoroethene layer.
6. multi-functional rigidity adjustable-speed locking load transfer device according to claim 2 is characterized in that: the connected mode of described cylinder barrel and the first cylinder cap employing internal thread.
7. multi-functional rigidity adjustable-speed according to claim 1 and 2 locks load transfer device, and it is characterized in that: described cylinder barrel comprises the second cylinder cap, circular cylinder, and described the second cylinder cap is fixedly connected on an end of circular cylinder; Described the second cylinder cap is provided with the through hole that cooperates with piston rod; In the reciprocating process of described piston rod, the two ends of piston rod all are positioned at outside the cylinder body.
8. multi-functional rigidity adjustable-speed according to claim 1 and 2 locks load transfer device, and it is characterized in that: the gap width between piston and the cylinder barrel is 0.01～0.05mm.
9. multi-functional rigidity adjustable-speed according to claim 8 locks load transfer device, and it is characterized in that: the outer round surface of described piston also is provided with ring-shaped groove; The groove width of described ring-shaped groove is 0.3～0.5mm, and groove depth is 0.5～1.0mm, and spacing is 2～5mm.
10. multi-functional rigidity adjustable-speed according to claim 1 and 2 locks load transfer device, and it is characterized in that: described hydraulic oil is silicone oil.
11. multi-functional rigidity adjustable-speed locking load transfer device according to claim 2, it is characterized in that: described piston rod also comprises the first fairlead that is positioned at cylinder barrel and is fixed on the first cylinder cap one side, and described the first fairlead is socketed on the piston rod; Piston rod also comprises the second fairlead that is positioned at the cylinder barrel bottom, and described piston is fixed between the piston rod two ends, and described fairlead is socketed on the piston rod.
12. multi-functional rigidity adjustable-speed locking load transfer device according to claim 11, it is characterized in that: described fairlead inboard is provided with annular groove, is provided with in the described annular groove be used to the sealing ring that prevents that hydraulic oil from leaking out along the interval between piston rod and the fairlead.
13. multi-functional rigidity adjustable-speed locking load transfer device according to claim 11, it is characterized in that: described fairlead is made take high-intensity resin as material.
14. multi-functional rigidity adjustable-speed locking load transfer device according to claim 1 and 2 is characterized in that: offer the first oil inlet passage, the second oil inlet passage on the described piston rod; Described the first oil inlet passage one end communicates with the first chamber, and the other end can communicate with the external world; Described the second oil inlet passage one end communicates with the second chamber, and the other end can communicate with the external world.
15. multi-functional rigidity adjustable-speed locking load transfer device according to claim 1 and 2, it is characterized in that: described piston rod offers the first exhaust passage, the second exhaust passage; Described the first exhaust passage one end communicates with the downtake pipe that is fixed on piston rod, and the other end can communicate with the external world; Described the second exhaust passage one end communicates with the second exhaust pipe that is fixed on piston rod, and the other end can communicate with the external world; Described downtake pipe is positioned at the first chamber, and described second exhaust pipe is positioned at the second chamber.
16. multi-functional rigidity adjustable-speed locking load transfer device according to claim 1 and 2, it is characterized in that: described piston rod also comprises dust ring, and described dust ring is fixed the first cylinder cap outside, and is socketed on the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483794.2A CN102926324B (en) | 2012-11-23 | 2012-11-23 | Multifunctional rigidity adjustable speed locking force transmission devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483794.2A CN102926324B (en) | 2012-11-23 | 2012-11-23 | Multifunctional rigidity adjustable speed locking force transmission devices |
Publications (2)
| Publication Number | Publication Date |
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| CN102926324A true CN102926324A (en) | 2013-02-13 |
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Cited By (3)
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| CN104612042A (en) * | 2013-12-05 | 2015-05-13 | 深圳市市政设计研究院有限公司 | Anti-collision connecting device for bridge |
| CN110160732A (en) * | 2018-08-09 | 2019-08-23 | 北京机电工程研究所 | Adjustable frictional force device and adjustable frictional force method for flutter test |
| CN111335140A (en) * | 2020-04-13 | 2020-06-26 | 中铁二院工程集团有限责任公司 | Arch structure damping device and method for deck type concrete arch bridge |
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| CN102926324B (en) | 2014-08-27 |
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Effective date of registration: 20180515 Address after: 518000 Shenzhen, Baoan District, Guangdong Xixiang street, hang Cheng Avenue, 175, 9 yuan, 9 yuan, 6B Patentee after: Prime Technology Co. Ltd. Address before: 510000 Engineering Research Center of Guangzhou University, No. 248 Guangyuan Middle Road, Guangzhou, Guangdong Patentee before: Yang Liru |