CN106948253A - Speed displacement hybrid locking device and speed displacement hybrid locking method - Google Patents
Speed displacement hybrid locking device and speed displacement hybrid locking method Download PDFInfo
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- CN106948253A CN106948253A CN201610007150.4A CN201610007150A CN106948253A CN 106948253 A CN106948253 A CN 106948253A CN 201610007150 A CN201610007150 A CN 201610007150A CN 106948253 A CN106948253 A CN 106948253A
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- clamping block
- slide mass
- fixed body
- way damper
- speed
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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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Abstract
The invention discloses a kind of speed displacement hybrid locking device and speed displacement hybrid locking method.Speed displacement hybrid locking device is bilateral symmetry, including fixed body, slide mass, one-way damper, clamping block, safety plug；One end of one-way damper connects slide mass by piston rod；Clamping block is arranged on fixed body, and clamping block is connected body by safety plug, and cylinder body is arranged on clamping block.When slide mass and fixed body less than the speed of predetermined value to make relative slide, safety plug is not cut, and clamping block does not perform locking；When slide mass and fixed body more than the speed of predetermined value to make relative slide, safety plug is cut, and clamping block performs locking, so as to provide the latching force more than damping force, reaches the purpose of speed displacement joint locking.Simple and reliable, strong applicability of the invention there is provided latching force it is more much bigger than the latching force that the one-way damper in the present invention is provided, stress self-locking can be realized in slide mass glide direction.
Description
Technical field
The present invention relates to bridge and technical field of buildings, especially with sliding function and sliding velocity need to be distinguished and select the quick bearing and device for sliding and being locked into line slip.
Background technology
Damper is the component that a kind of main body is piston type circular cylindrical cavity structure, property " speed sensitivity " of the high viscosity fluid of filling in piston in transit chamber body, make the damping force very little produced between cylinder body and piston under tick-over state, and as speed increase damping force quickly rises to design load, damper is changed into rigidity from flexibility and close to " locking ", realizes the limit function under the relative displacement and high speed between the connecting elements of two ends under low speed.The one-way damper used in the present invention is to increase check valve inside common damper, when cylinder body and piston are under high-speed motion state, the damping force produced in one direction is very big, the damping force produced in its opposite direction is relatively much smaller, and under tick-over state, the damping force produced in both direction is all smaller.Damper can be applied individually to any in the engineering structures such as bridge and building, can also be applied in combination with Other Engineering structural member such as bridge pad.In the prior art, speed lockup's body is accumulated with latching force ratio and cost with latching force than excessive.
The Chinese utility model of Application No. 201520033240.1 discloses a kind of bridge dynamometry speed locking device, including cylinder body, piston, the both sides of piston have the right hand piston bar for extending the left hand piston bar of left side end cover, extending right side end cover respectively, the overhanging end of left hand piston bar is hinged with beam body connects bearing, and overhanging end and the pier body connects bearing of right hand piston bar are hinged.First pressure sensor, second pressure sensor are respectively arranged with the left side end cover, right side end cover, displacement transducer is provided between right hand piston bar and pier body connects bearing.The Chinese invention patent application of Application No. 201310652018.5 discloses a kind of speed lockup's device that improves and triggers speed and the method and device of latching force, including the performs device, the locking device with interlockable teeth block that are applicable main body, the induction installation being made up of speed lockup's device, safeties and induction installation linkage being made up of fixed body and slide mass；It is applicable the fixed body of main body and slide mass and occurs relative displacement under the vibrations of building, induction installation is perceived to the relative moving speed for being applicable main body, when vibrations are excessive causes translational speed to exceed setting value, induction installation breaks through safeties, and initial triggering driving force promotion performs device execution mechanical caging is provided, performs device releases the compacting to locking device, and the tooth block engagement of locking device realizes stress self-locking in the Relative sliding direction for being applicable main body.Above prior art, in terms of the volume and cost of reduction unit latching force, is further improved.
The content of the invention
The technical problem to be solved in the present invention is, the big speed displacement hybrid locking device of a kind of simple and reliable, strong applicability, latching force and speed displacement hybrid locking method are provided, it does not lose sensitiveness of the damper to speed, and the volume of unit latching force is substantially reduced with cost.
In order to solve the above-mentioned technical problem, the present invention provides following technical scheme：A kind of speed displacement hybrid locking device, including fixed body, slide mass, one-way damper, clamping block, safety plug；Slide mass is located on fixed body and can slided on fixed body；One-way damper includes piston rod and cylinder body, and one end of one-way damper is fixed in slide mass by piston rod；The cylinder body of one-way damper is arranged on clamping block, and the clamping block is arranged on fixed body, and clamping block is connected body by safety plug.
The speed displacement hybrid locking device is bilateral symmetry, slide mass initial position is located in the middle part of fixed body, an one-way damper, clamping block, a safety plug are respectively provided with right side on the left of slide mass, the one-way damper, clamping block, safety plug are symmetrical in the slide mass left and right sides.
The one-way damper is fixed on slide mass by piston rod, and the position corresponding with piston rod fluting, reserves space when clamping block is pulled obliquely by one-way damper on the clamping block below piston rod；Cylinder body is embedded in inside clamping block, clamping block lower surface is provided with helical teeth one, lower section extends helical teeth one on the clamping block of the left side to the left, helical teeth one on the clamping block of the right extends to the right, fixed body is provided with the helical teeth two being engaged with helical teeth one, so that clamping block can only be moved to Block direction is slided, and the motion of dorsal glide Block direction is then locked out.
The fixed body constitutes with slide mass and is applicable main body, when the relative slip at a slow speed of slide mass and fixed body, the damping force very little of one-way damper piston rod generation relative with cylinder body, cylinder body is not enough to promote clamping block breaking pin, clamping block does not perform locking, slide mass and fixed body keep relative at a slow speed and slided, when the quickly relative slip of slide mass and fixed body, one-way damper piston rod is relative with cylinder body to produce larger damping force, cylinder body produces sufficiently large thrust to clamping block, safety plug is cut, clamping block is slided to slide mass direction, after repeatedly moving back and forth, both sides clamping block pushes against slide mass and performs locking, reach the purpose of speed lockup.
Distance is maintained when initial between the clamping block and slide mass.
A kind of speed displacement hybrid locking method, applicable main body is used as with fixed body and slide mass, two one-way dampers are separately fixed at slide mass two ends by its piston rod, the cylinder body of one-way damper is arranged on clamping block, clamping block is connected by safety plug with fixed body, and engaged with fixed body slide surface by helical rack, clamping block is slided to slide mass direction, initially preset distance is maintained between clamping block and slide mass；
The speed displacement hybrid locking method includes：
The step of slide mass makees relative slide with fixed body；
The step of one-way damper produces damping force；
Clamping block is under one-way damper driving the step of unidirectional slip；
The step of clamping block performs locking when damping force exceedes setting value；
When slide mass and fixed body less than the speed of predetermined value to make relative slide, the damping force that one-way damper is produced is not up to setting value, and safety plug is not cut, and clamping block does not perform locking；When slide mass and fixed body more than the speed of predetermined value to make relative slide, one-way damper produces the damping force more than setting value, and safety plug is cut, and clamping block performs locking, so as to provide the latching force more than damping force, reaches the purpose of speed lockup.
When the piston rod of one-way damper is fixed in slide mass, the cylinder body of one-way damper is initially semifixed in clamping block；When slide mass and smaller fixed body Relative sliding speed, cylinder body is constrained by safety plug, in stationary state；When slide mass and larger fixed body Relative sliding speed, cylinder body breaks through the constraint setting in motion of safety plug, and provides driving force for clamping block.
When slide mass and fixed body Relative sliding speed are smaller, the cylinder body and piston rod opposing force of one-way damper are smaller, and safety plug is not cut, and clamping block does not perform locking；When slide mass and larger fixed body Relative sliding speed, the cylinder body and piston rod opposing force of one-way damper are larger, and safety plug is cut, and clamping block performs locking；
The number of times of slide mass and fixed body reciprocal relative movement is determined that clamping block pushes against slide mass and performs locking after moving back and forth once or repeatedly by the distance and reciprocating monodisplacement of initial slide mass and clamping block.
Speed displacement hybrid locking is carried out using above-mentioned speed displacement hybrid locking device；The speed displacement hybrid locking device can realize stress self-locking in slide mass glide direction.
The present invention also provides another speed displacement hybrid locking device, including fixed body, slide mass, one-way damper, and slide mass is located on fixed body and can slided on fixed body；One-way damper mainly includes piston rod and cylinder body, and cylinder body is fixed on slide mass；It is characterized in that：Also include clamping block, safety plug；The clamping block is arranged on fixed body, and clamping block is connected body by safety plug, and one end of one-way damper connects clamping block by piston rod；
The speed displacement hybrid locking device is bilateral symmetry, slide mass is located in the middle part of fixed body, an one-way damper, clamping block, a safety plug are respectively provided with right side on the left of slide mass, the one-way damper, clamping block, safety plug are symmetrical in the slide mass left and right sides；
During work, the piston rod of one-way damper is initially fixed on clamping block；When slide mass is less than predetermined value with fixed body Relative sliding speed, piston rod is constrained by safety plug, in stationary state；When slide mass is more than predetermined value with fixed body Relative sliding speed, piston rod breaks through the constraint setting in motion of safety plug, and provides driving force for clamping block.
The invention discloses a kind of speed displacement hybrid locking device and speed displacement hybrid locking method, the technical problem of " speed lockup's body is accumulated with latching force ratio and cost with latching force than excessive " in the prior art is solved.Speed displacement hybrid locking device is simple in construction, easy for installation, simple and reliable, strong applicability, latching force are big.Using symmetric design, no matter which side slide mass move the present invention towards, can realize lock function.Using the present invention there is provided latching force it is more much bigger than the latching force that the one-way damper in the present invention is provided, and speed displacement hybrid locking device（Locking device）Stress self-locking can be realized in slide mass glide direction.In the present invention simplified applicable main body is used as with fixed body and slide mass, one-way damper piston rod is fixed on slide mass, and when slide mass makees relative slide with fixed body with less speed, the damping force that one-way damper is produced is smaller, safety plug is not cut, and clamping block does not perform locking.When slide mass and fixed body make relative slide with sufficiently large speed, one-way damper produces sufficiently large damping force, and safety plug is cut, and clamping block performs locking, can provide the latching force more much bigger than damping force.This method does not lose sensitiveness of the damper to speed with device, and the volume of unit latching force is substantially reduced with cost.Present invention may apply to the place of all operating speed locks, can be used alone can also be applied in combination with aseismatic bearing, vibration absorption and isolation support etc., be particularly suitable for use in and be applied in combination with friction pendulum support.
Brief description of the drawings
Fig. 1 is the main view of embodiment of the present invention medium velocity displacement hybrid locking device（Left side is section view）Structural representation；
Fig. 2 is the overlooking the structure diagram of embodiment of the present invention medium velocity displacement hybrid locking device.
In figure：1st, piston rod, 2, safety plug, 3, cylinder body, 4, clamping block, 5, fixed body, 6, slide mass.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
It refer in Fig. 1, Fig. 2, speed displacement hybrid locking device（Locking device）Symmetrical structure is designed to, is mainly made up of slide mass 6, clamping block 4, safety plug 2, fixed body 5 and one-way damper, one-way damper includes piston rod 1 and cylinder body 3, wherein clamping block, safety plug, one-way damper there are symmetrical two.Slide mass 6 relative on fixed body 5 can be slided.One-way damper one end is connected on slide mass by piston rod 1, can occur relative slip with cylinder body 3 under the thrust of slide mass.One-way damper is fixed on slide mass in a cantilever fashion by piston rod, slotted below piston rod on corresponding clamping block 4, do not blocked with ensureing clamping block to be damped when device is pulled obliquely by piston rod, when the piston rod of two one-way dampers is toward on the inside of locking device（Towards slide mass direction）During high-speed motion, damper all produces very big damping force, when piston rod is on the outside of locking device（Dorsal glide body direction）During high-speed motion, the damping force very little that damper is produced.Cylinder body 3 is embedded in the inside of clamping block 4, and the lower surface of clamping block 4 is processed into helical teeth, is engaged with the helical teeth of fixed body 5, and clamping block 4 can be to locking device medial motion, and opposite direction motion will be locked out.Meanwhile, clamping block 4 is connected on fixed body 5 by safety plug 2, and when safety plug does not have locked block 4 to cut, clamping block is static, and when safety plug is cut, clamping block 2 will unidirectionally slide towards slide mass direction.
Under the low speed displacement such as temperature movement, the relative sliding velocity very little of slide mass 6 and fixed body 5, so that the relative velocity of one-way damper piston rod 1 and cylinder body 3 also very little, according to damper characteristics, its piston rod proximate freedom can be slided in cylinder body, cylinder body is smaller to the damping force of piston rod, cylinder body is no more than the ultimate shear of safety plug by clamping block 4 to the active force of safety plug 2, safety plug is not cut, locking is performed and is not triggered, clamping block 4 is not slid, and slide mass 6 is not locked, and relative on fixed body 5 can be slided.When an earthquake occurs, the relative sliding velocity of slide mass 6 and fixed body 5 is very big, as shown in Figure 1, when 6 quick sliding from left to right of slide mass, piston rod 1 is driven to slide at a same speed, according to the characteristic of one-way damper, cylinder body 3 is very big to the damping force of piston rod 1, according to the interaction of power, piston rod 1 is also very big to the reaction force of cylinder body 3, this very big active force is passed to clamping block 4 by cylinder body 3, and act on safety plug 2, more than the ultimate shear of safety plug, safety plug is cut, clamping block 4 is pulled by one-way damper to locking device inner side, simultaneously, the piston rod on the right is moved right at a same speed, according to the characteristic of one-way damper, the damping force very little that damper is produced, piston rod proximate freedom in cylinder body is slided, the distance of the right clamping block and slide mass diminishes, similarly, when slide mass 6 turns left quick sliding from the right side, the safety plug on the right is cut, the right clamping block is driven to locking device medial motion, the piston rod on the left side in cylinder body slidably, the distance between left side clamping block and slide mass diminish, by repeatedly reciprocating motion, the vanishing of the distance between two ends clamping block and slide mass, clamping block pushes against slide mass and is locked, much bigger than the damping force of one-way damper of the latching force that clamping block is produced, so as to reach the purpose of speed displacement joint locking.
With fixed body and slide mass as simplified applicable main body in the present invention, two one-way dampers are fixed on slide mass two ends by piston rod, and its cylinder body is embedded on clamping block, and its axial direction is slide mass glide direction；Clamping block is connected by safety plug with fixed body, and engaged with fixed body slide surface by helical rack, the mating surface of fixed body and clamping block is also machined to the helical teeth cooperated simultaneously, it is secondary that they constitute unidirectional tooth bar sliding, achievable clamping block can only be to unidirectional slip on the inside of locking device, opposite direction motion is then locked, while being designed with a certain size distance between clamping block and slide mass.When slide mass is slided with less speed, the damping force that one-way damper is produced is smaller, and safety plug is not cut, and slide mass can remain that less speed makees relative slide with fixed body.When slide mass is relatively fixed body with larger speed to be slided in one direction, the one-way damper piston rod of one end is to locking device medial motion, pulled by slide mass, the one-way damper piston rod of the other end is along locking device movement outside, according to the characteristic of one-way damper and the arrangement of the invention to one-way damper, the one-way damper piston rod being pulled produces larger damping force, clamping block is passed to by cylinder body, and act on safety plug, safety plug is cut, clamping block Slideslip along along locking device under the drive of one-way damper, the damping force very little that the one-way damper of the other end is produced, safety plug is not cut, clamping block is not slided, slide mass and piston rod are along locking device movement outside, so, the distance of the clamping block and slide mass that are not pulled damper side diminishes；When slide mass is moved in opposite directions with larger speed and fixed body, the one-way damper not being pulled originally produces larger damping force, safety plug is cut, damper drives clamping block Slideslip along along locking device, originally it is smaller that the one-way damper being pulled produces damping force, along locking device outside slidably, so, the clamping block of opposite side and the distance of slide mass also diminish piston rod.Therefore, by multiple circulations, the clamping block and the distance between fixed body at two ends are less and less, and final clamping block compresses slide mass and realizes slide mass speed lockup.
The present invention is unique in that the piston rod of one-way damper is being initially semifixed, i.e., when slide mass and fixed body Relative sliding speed are smaller, one-way damper cylinder body passes through safeties（Insure latch structure）It is spacing, in stationary state；When slide mass and larger fixed body Relative sliding speed, cylinder body breaks through the constraint setting in motion of safeties, and provide driving force for clamping block, so as to realize by using one-way damper as sensing and drive device, sensitiveness of the present invention to speed is remained, locking is can be achieved with the initial stage accelerated in speed.Same and piston rod construction is semifixed when clamping block, can also realize this function when cylinder body is fixed on slide mass, and its principle is identical.
Using symmetric design, no matter which side slide mass move the present invention towards, can realize above-mentioned lock function.The slide mass for being applicable main body described in embodiment and fixed body be only it is relative slide with it is fixed, it is actual also to consider or both all to slide in turn.
The present invention has the device of insurance function（Insure latch structure）, its role is to when slide mass and smaller fixed body Relative sliding speed, the cylinder body and piston rod opposing force of one-way damper are smaller, it is ensured that clamping block does not perform locking；When slide mass and larger fixed body Relative sliding speed, the cylinder body and piston rod opposing force of one-way damper are larger, and safety plug is cut, it is ensured that clamping block performs locking.Using the present invention there is provided latching force it is more much bigger than the latching force that the one-way damper in the present invention is provided, and locking device can realize stress self-locking in slide mass glide direction.The number of times of slide mass and fixed body reciprocal relative movement is determined by the distance and reciprocating monodisplacement of initial slide mass and clamping block, clamping block is to compress slide mass to perform locking after a possible reciprocating motion, it is also possible to which clamping block compression slide mass performs locking after repeatedly moving back and forth.The inventive method does not lose sensitiveness of the damper to speed with device, and the volume of unit latching force is relative with cost substantially to be reduced merely using damper.
Slide mass, fixed body, clamping block in the present embodiment can be replaced by other modes easily, and the present embodiment only provides more straightaway one kind.Other installation method principles meet the belonging within the protection category of the present invention of principle of the invention.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for a person skilled in the art, the present invention there can be various modifications and variations.Within the spirit and principles of the invention, any modifications, equivalent substitutions and improvements made etc., are all contained within protection scope of the present invention.
Claims (10)
1. a kind of speed displacement hybrid locking device, including fixed body, slide mass, one-way damper, slide mass are located on fixed body and can slided on fixed body；One-way damper includes piston rod and cylinder body, and one end of one-way damper is fixed in slide mass by piston rod；It is characterized in that：Also include clamping block, safety plug；The cylinder body of one-way damper is arranged on clamping block；The clamping block is arranged on fixed body, and clamping block is connected body by safety plug.
2. speed displacement hybrid locking device according to claim 1, it is characterised in that：The speed displacement hybrid locking device is bilateral symmetry, slide mass initial position is located in the middle part of fixed body, an one-way damper, clamping block, a safety plug are respectively provided with right side on the left of slide mass, the one-way damper, clamping block, safety plug are symmetrical in the slide mass left and right sides.
3. speed displacement hybrid locking device according to claim 1, it is characterised in that：The one-way damper is fixed on slide mass by piston rod, and the position corresponding with piston rod fluting, reserves space when clamping block is pulled obliquely by one-way damper on the clamping block below piston rod；Cylinder body is embedded in inside clamping block, clamping block lower surface is provided with helical teeth one, lower section extends helical teeth one on the clamping block of the left side to the left, helical teeth one on the clamping block of the right extends to the right, fixed body is provided with the helical teeth two being engaged with helical teeth one, so that clamping block can only be moved to Block direction is slided, and the motion of dorsal glide Block direction is then locked out.
4. speed displacement hybrid locking device according to claim 1, it is characterised in that：The fixed body constitutes with slide mass and is applicable main body, when the relative slip at a slow speed of slide mass and fixed body, the damping force very little of one-way damper piston rod generation relative with cylinder body, cylinder body is not enough to promote clamping block breaking pin, clamping block does not perform locking, slide mass and fixed body keep relative at a slow speed and slided, when the quickly relative slip of slide mass and fixed body, one-way damper piston rod is relative with cylinder body to produce larger damping force, cylinder body produces sufficiently large thrust to clamping block, safety plug is cut, clamping block is slided to slide mass direction, after repeatedly moving back and forth, both sides clamping block pushes against slide mass and performs locking, reach the purpose of speed lockup.
5. speed displacement hybrid locking device according to claim 1, it is characterised in that：Distance is maintained when initial between the clamping block and slide mass.
6. a kind of speed displacement hybrid locking method, it is characterised in that：Applicable main body is used as with fixed body and slide mass, two one-way dampers are separately fixed at slide mass two ends by its piston rod, the cylinder body of one-way damper is arranged on clamping block, clamping block is connected by safety plug with fixed body, and engaged with fixed body slide surface by helical rack, clamping block is slided to slide mass direction, initially preset distance is maintained between clamping block and slide mass；
The speed displacement hybrid locking method includes：
The step of slide mass makees relative slide with fixed body；
The step of one-way damper produces damping force；
Clamping block is under one-way damper driving the step of unidirectional slip；
The step of clamping block performs locking when damping force exceedes setting value；
When slide mass and fixed body less than the speed of predetermined value to make relative slide, the damping force that one-way damper is produced is not up to setting value, and safety plug is not cut, and clamping block does not perform locking；When slide mass and fixed body more than the speed of predetermined value to make relative slide, one-way damper produces the damping force more than setting value, and safety plug is cut, and clamping block performs locking, so as to provide the latching force more than damping force, reaches the purpose of speed lockup.
7. speed displacement hybrid locking method according to claim 6, it is characterised in that：When the piston rod of one-way damper is fixed in slide mass, the cylinder body of one-way damper is initially semifixed in clamping block；When slide mass and smaller fixed body Relative sliding speed, cylinder body is constrained by safety plug, in stationary state；When slide mass and larger fixed body Relative sliding speed, cylinder body breaks through the constraint setting in motion of safety plug, and provides driving force for clamping block.
8. speed displacement hybrid locking method according to claim 6, it is characterised in that：When slide mass and fixed body Relative sliding speed are smaller, the cylinder body and piston rod opposing force of one-way damper are smaller, and safety plug is not cut, and clamping block does not perform locking；When slide mass and larger fixed body Relative sliding speed, the cylinder body and piston rod opposing force of one-way damper are larger, and safety plug is cut, and clamping block performs locking；
The number of times of slide mass and fixed body reciprocal relative movement is determined that clamping block pushes against slide mass and performs locking after moving back and forth once or repeatedly by the distance and reciprocating monodisplacement of initial slide mass and clamping block.
9. speed displacement hybrid locking method according to claim 6, it is characterised in that：Speed displacement hybrid locking is carried out using the speed displacement hybrid locking device any one of claim 1-5；The speed displacement hybrid locking device can realize stress self-locking in slide mass glide direction.
10. a kind of speed displacement hybrid locking device, including fixed body, slide mass, one-way damper, slide mass are located on fixed body and can slided on fixed body；One-way damper includes piston rod and cylinder body, and cylinder body is fixed on slide mass；It is characterized in that：Also include clamping block, safety plug；The clamping block is arranged on fixed body, and clamping block is connected body by safety plug, and one end of one-way damper connects clamping block by piston rod；
The speed displacement hybrid locking device is bilateral symmetry, slide mass is located in the middle part of fixed body, an one-way damper, clamping block, a safety plug are respectively provided with right side on the left of slide mass, the one-way damper, clamping block, safety plug are symmetrical in the slide mass left and right sides；
During work, the piston rod of one-way damper is initially fixed on clamping block；When slide mass is less than predetermined value with fixed body Relative sliding speed, piston rod is constrained by safety plug, in stationary state；When slide mass is more than predetermined value with fixed body Relative sliding speed, piston rod breaks through the constraint setting in motion of safety plug, and provides driving force for clamping block.
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| CN109158428A (en) * | 2018-09-27 | 2019-01-08 | 天津市中重科技工程有限公司 | Elevation adjusting device between a kind of milling train |
| CN111576117A (en) * | 2020-05-13 | 2020-08-25 | 中铁二院工程集团有限责任公司 | Roadbed structure crossing active fault and construction method thereof |
| CN111749120A (en) * | 2020-07-08 | 2020-10-09 | 中南大学 | Viscous damping system, bridge comprising same and bridge damping method |
| CN112195765A (en) * | 2020-10-20 | 2021-01-08 | 成都市新筑路桥机械股份有限公司 | Mechanical locking friction pendulum vibration reduction and isolation support |
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