CN210177349U - Adjustable cable high-damping combined beam falling prevention device - Google Patents
Adjustable cable high-damping combined beam falling prevention device Download PDFInfo
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- CN210177349U CN210177349U CN201920594620.0U CN201920594620U CN210177349U CN 210177349 U CN210177349 U CN 210177349U CN 201920594620 U CN201920594620 U CN 201920594620U CN 210177349 U CN210177349 U CN 210177349U
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Abstract
The utility model discloses an adjustable cable high-damping combined beam-falling prevention device, which relates to the technical field of secondary bridge protection devices and is provided with a cylindrical adjusting end protective cover with an opening at one end, wherein an adjusting end anchorage device and a viscous fluid damper are sequentially arranged in the adjusting end protective cover from inside to outside along the axial direction, an adjusting end embedded base plate is connected outside the opening end of the adjusting end protective cover, and the viscous fluid damper is connected with the adjusting end embedded base plate through a supporting cylinder; the device comprises a cylindrical fixed end protective cover with an opening at one end, wherein a fixed end anchorage device is axially arranged in the fixed end protective cover, and a fixed end embedded base plate is connected outside the opening end of the fixed end protective cover; adjust and be connected through pre-buried union coupling between end pre-buried backing plate and the pre-buried backing plate of stiff end, be provided with the cable body along the axial in the pre-buried pipe, its one end of this cable body is passed and gets into in the viscous fluid damper its steel strand wires that stretch out of back insert and adjust the end ground tackle in, compare with prior art, the utility model discloses spacing effect, shockproof effectual.
Description
Technical Field
The utility model belongs to the technical field of bridge secondary protector technique and specifically relates to an adjustable cable high damping combination formula prevents roof beam device that falls.
Background
China is one of the countries with the strongest earthquake activities and the most serious earthquake disasters in the world, and beam falling is one of the bridge earthquake disasters with the highest frequency, the most serious destructiveness and the most difficult repair in earthquakes. The anti-falling device is a protection system for preventing an upper structure of a bridge from generating unexpected large displacement under the action of an earthquake so as to fall off from the top of the lower structure, is one of important components of a damping member of the bridge, and is not obvious in function when in a normal working state or in a small earthquake, and the upper structure can freely stretch or vibrate. When a large earthquake occurs, the beam falling prevention device starts to play a role, and the vibration of the upper structure is limited, so that the deflection of the upper structure is not too large. Therefore, the beam falling prevention device is a necessary device for preventing the secondary protection of the bridge or the high-risk bridge and is a 'insurance' for ensuring the safety of the bridge.
The main constructional measures of traditional roof beam mode of preventing falling set up concrete dog, crab-bolt or steel bracket in pier body upper portion both sides, and the horizontal bridge is to preventing that the roof beam body from droing, nevertheless owing to not set up buffer, prevents that the roof beam facility of falling can take place hard striking with the roof beam during the earthquake, leads to the fact the destruction to the roof beam body easily. Along with the higher and higher requirements on the safety of the bridge, the structural safety requirements of the anti-falling device are also higher and higher. The structure of the beam falling prevention device in the current market is infinite, and the beam falling prevention device comprises a support limiting device, a chain falling prevention device, a pin hole type device, a steel bar connecting type device and the like, but has the defects of different degrees in limiting effect, shockproof effect, later maintenance and the like. The method only simply mentions the measure that the bridge should consider the anti-falling of the beam in the current 'highway engineering earthquake-resistant standard' in China, and has no quantitative regulation on the specific design.
Therefore, the prior art needs to be improved and improved, and provides a more reliable guarantee for the safety of the bridge structure under the action of strong earthquake.
SUMMERY OF THE UTILITY MODEL
The utility model provides a roof beam device is prevented falling by adjustable cable high damping combination formula, it can solve the current spacing effect of roof beam, the not good problem of shockproof effect of preventing falling.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the device is provided with a cylindrical adjusting end protective cover with an opening at one end, an adjusting end anchorage device and a viscous fluid damper are sequentially arranged in the cylindrical adjusting end protective cover from inside to outside along the axial direction, an adjusting end embedded base plate is connected outside the opening end of the cylindrical adjusting end protective cover, and the viscous fluid damper is connected with the adjusting end embedded base plate through a supporting cylinder; the cylindrical fixed end protection cover is provided with an opening at one end, a fixed end anchorage device is axially arranged in the cylindrical fixed end protection cover, and a fixed end embedded base plate is connected outside the opening end of the cylindrical fixed end protection cover; the adjusting end embedded base plate is connected with the fixed end embedded base plate through an embedded pipe, a cable body is axially arranged in the embedded pipe, and a steel strand extending out of the cable body is inserted into the adjusting end anchorage device after one end of the cable body penetrates through the adjusting end embedded base plate and enters the viscous fluid damper; and the steel strand extending out of the other end of the cable body is inserted into the fixed end anchorage device.
In the above technical solution, a more specific solution may also be: and a first cushion rubber pad is pressed between the support cylinder and the adjusting end embedded base plate, and through holes for the cable body to pass through are respectively arranged in the middle parts of the adjusting end embedded base plate, the support cylinder and the first cushion rubber pad.
Further: the viscous fluid damper comprises an oil cylinder, a piston of the oil cylinder is a hollow rod with openings at two ends, a cover plate nut is screwed at one end of the piston extending out of an end cover at one end of the oil cylinder and is connected with an adjusting end anchor plate of the adjusting end anchor, and a shaft shoulder of the cover plate nut is connected with a front sealing plate sleeved in the end cover of the oil cylinder through an adjusting screw rod; the other end of the oil cylinder is provided with a rear sealing plate, the other end of the piston extends out of a through hole in the middle of the rear sealing plate, and one end of the cable body penetrates into the piston; a convex ring extending outwards is arranged on the section, between the front sealing plate and the rear sealing plate, outside the rod wall of the piston, and the outer diameter of the convex ring is slightly smaller than the inner diameter of the oil cylinder and is provided with a guide copper layer; the supporting cylinder is inserted between the inner wall of the rear end of the oil cylinder and the rear sealing plate, and the outer wall of the oil cylinder is in threaded connection with a spring seat nut.
Further: the adjusting end anchor comprises an adjusting end anchor plate and a first working clamping piece which is arranged in the through hole of the adjusting end anchor plate and used in cooperation with the adjusting end anchor plate, an inner hole is formed in the first working clamping piece along the axial direction, the steel strand of the cable body penetrates out of the first working clamping piece, and a first anti-loosening device is connected to the extending end of the first working clamping piece in a pressing mode.
Further: the fixed end anchor device comprises a fixed end anchor plate and a second working clamping piece which is arranged in a through hole of the fixed end anchor plate and used in a matched mode with the anchor plate, an inner hole is formed in the second working clamping piece along the axial direction, a steel strand is arranged in the second working clamping piece in a penetrating mode, the second working clamping piece stretches out to be externally crimped with a second anti-loosening device, a fixed end nut is screwed on the outer wall of the fixed end anchor plate, and a second cushion rubber pad is crimped between the fixed end nut and the fixed end pre-buried base plate.
Further: the second anti-loosening device comprises an anti-loosening pressing plate which is a circular plate, a through hole corresponding to the adjusting end anchor plate or the fixing end anchor plate is formed in the anti-loosening pressing plate, a pressing bolt used for pressing the first working clamping piece or the second working clamping piece is inserted into the through hole in a penetrating mode, and the anti-loosening pressing plate is fixed with the adjusting end anchor plate or the fixing end anchor plate through a pressing screw.
Further: the end of the cable body extending to the fixed end anchor is sleeved with a sealing device with an opening at one end, and the opening end of the sealing device extends out of the through holes in the middle of the fixed end embedded base plate and the second cushion rubber pad and is connected with the fixed end anchor plate.
Further: a cylindrical spring is arranged between the cover plate nut and the spring seat nut; the middle part in the embedded pipe is provided with a deviation device, the deviation device is provided with a fixed sleeve arranged along the axial direction, one end of the fixed sleeve is opened, the other end of the fixed sleeve is provided with a through hole, the opened end of the fixed sleeve is provided with an annular pressing plate, a deviation device polymer layer is filled in the fixed sleeve, the deviation device polymer layer is connected with the fixed sleeve and the annular pressing plate through an adjusting bolt, a horn-shaped through hole is arranged in the deviation device polymer layer, and the small end of the horn-shaped through hole corresponds to the through hole of the fixed sleeve.
Due to the adoption of the technical scheme, compared with the prior art, the utility model, have following beneficial effect:
1. because this prevent girder segment device includes regulation end and stiff end and connects the embedded pipe that is equipped with the cable body in regulation end and stiff end, the regulation end comprises regulation end ground tackle and viscous fluid damper in the regulation end safety cover, the stiff end comprises the stiff end ground tackle, adjust the tensile of steel strand wires cable body through regulation end ground tackle and viscous fluid damper in the regulation end to it, and can adopt corresponding many steel strand wires according to the tonnage of difference, have better flexibility, the relative displacement of restriction isolation bridge upper portion and pier top is unlikely to be too big, prevent the girder segment, spacing effect and shockproof effectual.
2. The viscous fluid damper is adopted and consists of a cover plate nut, an adjusting screw rod, a piston, an end cover, a front sealing plate, an oil cylinder, a cylindrical spring, a damping medium, a spring seat nut and a rear sealing plate, and has the advantages of simple appearance, compact structure, good sealing property, convenient installation and small installation space, and the damper is assembled into a whole before leaving a factory and does not need to be assembled on site, so that the damper is more convenient for site construction, ensures more stable performance, and reduces unstable factors caused by site installation; the damping medium adopts the dimethyl silicone oil, and has the advantages of small viscosity-temperature coefficient, extremely low viscosity-temperature coefficient, stable performance at the extremely high temperature of (-50 ℃ to +250 ℃), good pit radiation performance, physiological inertia, chemical stability, good electrical insulation, weather resistance and hydrophobicity, and high shear resistance; the viscous fluid damper generally utilizes a piston to push damping media in an oil cylinder to interact to generate damping force, and partial energy of structural vibration is dissipated through viscous consumption energy of a viscous fluid damping material in the damper, so that the aim of reducing structural vibration such as earthquake and wind vibration reaction is fulfilled.
3. The fixed end anchorage device and the adjusting end anchorage device are provided with anti-loosening devices, so that the stability of the anchoring performance is effectively improved.
4. The fixed end anchor plate is provided with external threads and is locked by a fixed end nut, so that the loss of the control stress of the steel strand is effectively eliminated, and the aim of low-retraction anchoring is fulfilled; in addition, the cable force during installation or later maintenance is effectively adjusted through the adjusting nut.
5. The adjusting end anchorage device and the fixing end anchorage device are both provided with a protective cover and a sealing device, so that water and moisture equality corrosion media are prevented from directly entering the anchoring end, the corrosion resistance of the steel strand is ensured more reliably, and the service life and the safety performance of the anti-falling beam are improved.
6. The high-damping buffer rubber is adopted, so that strong impact force during earthquake can be relieved, and the high-damping buffer rubber has good energy absorption, elastic reset and bearing capacity.
7. The deflector adopts adjustable structure, can suitably adjust the position of deflector compound through adjusting bolt according to the operating mode condition, and cable body axial centering effect can be better. The deflector compound is made of composite materials, has a guiding effect on multidirectional bending caused by earthquake, and relieves local bending stress generated on the connecting cable, so that the anchoring part is only subjected to axial force and has no bending stress and shearing force.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the present invention installed on a pier.
Fig. 3 is a schematic structural view of the anti-loosening device of the present invention.
Fig. 4 is a schematic structural view of the deflector of the present invention.
Fig. 5 is a sectional view a-a of fig. 4.
The serial numbers are as follows:
1. adjusting end protective cover, 2, first anti-loose device, 3, first working clamping piece, 4, adjusting end anchor plate, 5, cover plate nut, 6, adjusting screw, 7, piston, 8 end cover, 9, front sealing plate, 10, oil cylinder, 11, cylindrical spring, 12, damping medium, 13, spring seat nut, 14, rear sealing plate, 15, supporting cylinder, 16, first buffer rubber pad, 17, adjusting end embedded backing plate, 18, cable body, 19, embedded pipe, 20, deflector, 21, sealing device, 22, steel strand, 23, fixed end embedded backing plate, 24, second buffer rubber pad, 25, fixed end nut, 26, fixed end anchor plate, 27, second working clamping piece, 28, second anti-loose device, 29, fixed end protective cover, 30, convex ring, 31, compression bolt, 32, anti-loose compression bolt, 33 compression bolt, 34, fixed sleeve, 35, deflector polymer, 35, and compression bolt, 36. Adjusting bolts, 37, a pressure plate and 38 trumpet-shaped through holes.
Detailed Description
The present invention will be described in further detail with reference to the following examples. However, the present invention is not limited to the following examples.
As shown in fig. 1, the utility model has a cylindrical adjusting end protective cover 1 with an opening at one end, an adjusting end anchorage device and a viscous fluid damper are sequentially arranged in the cylindrical adjusting end protective cover from inside to outside along the axial direction, an adjusting end embedded backing plate 17 is connected outside the opening end of the cylindrical adjusting end protective cover 1, and the viscous fluid damper is connected with the adjusting end embedded backing plate 17 through a supporting cylinder 15; a cylindrical fixed end protection cover 29 with an opening at one end, wherein a fixed end anchorage is axially arranged in the cylindrical fixed end protection cover, and a fixed end embedded base plate 23 is connected outside the opening end of the cylindrical fixed end protection cover; the adjusting end embedded base plate 17 is connected with the fixed end embedded base plate 23 through the embedded pipe 19, a cable body 18 is axially arranged in the embedded pipe 19, and a steel strand 22 extending out of the cable body after one end of the cable body penetrates through the adjusting end embedded base plate 17 and enters the viscous fluid damper is inserted into the adjusting end anchorage; the steel strand 22 extending out of the other end of the cable body 18 is inserted into the fixed-end anchorage; first cushion rubber pads 16 are pressed between the supporting cylinder 15 and the adjusting end embedded base plate 17, and through holes for the cable bodies 18 to penetrate are respectively arranged in the middle of the adjusting end embedded base plate 17, the supporting cylinder 15 and the first cushion rubber pads 16. The adjusting end anchorage and the fixed end anchorage are both provided with a protective cover and a sealing device, so that corrosive media such as water, moisture and the like are prevented from directly entering the anchoring end, the corrosion resistance of the steel strand is more reliably ensured, and the service life and the safety performance of the beam falling prevention device are improved; the cushion rubber pad is adopted, so that strong impact force during earthquake can be relieved, and the cushion rubber pad has good energy absorption, elastic reset and bearing capacity.
The viscous fluid damper comprises an oil cylinder 10, wherein dimethyl silicone oil is adopted as a damping medium 12 in the oil cylinder, and the damping medium has the advantages of small viscosity-temperature coefficient, extremely low viscosity-temperature coefficient, stable performance at extremely high temperature (minus 50 ℃ to +250 ℃), good pit radiation performance, physiological inertia, chemical stability, good electrical insulation, weather resistance and hydrophobicity and high shear resistance; a piston 7 of the oil cylinder 10 is a hollow rod with openings at two ends, a thread is arranged outside the end head of one end of the piston 7 extending out of an end cover 8 at one end of the oil cylinder 10 and used for being in threaded connection with a cover plate nut 5, the cover plate nut is connected with an adjusting end anchor plate 4 of an adjusting end anchor, and a shaft shoulder of the cover plate nut 5 is connected with a front sealing plate 9 sleeved in the end cover 8 of the oil cylinder 10 through symmetrically arranged adjusting screw rods 6; the other end of the oil cylinder 10 is provided with a rear sealing plate 14, the other end of the piston 7 extends out of a through hole in the middle of the rear sealing plate 14, and one end of a cable 18 penetrates into the piston 7; a convex ring 30 which extends outwards is arranged on the section, between the front sealing plate 9 and the rear sealing plate 14, outside the rod wall of the piston 7, the outer diameter of the convex ring is slightly smaller than the inner diameter of the oil cylinder 10, and a guide copper layer is arranged, so that the convex ring can well push damping media in the oil cylinder to interact with each other along with the left and right movement of the piston to generate damping force, part of energy of structural vibration is dissipated through viscous consumption energy of viscous fluid damping materials in a damper, and the aim of reducing structural vibration such as earthquake and wind vibration reaction is fulfilled; a supporting cylinder 15 is inserted between the inner wall of the rear end of the oil cylinder 10 and the rear sealing plate 14, the outer wall of the oil cylinder 10 is in a threaded design and is used for screwing a spring seat nut 13, and a cylindrical spring 11 is arranged between the cover plate nut 5 and the spring seat nut 13; the outer wall of the oil cylinder 10 and the outer circle of the extending end of the piston 7 are designed into a thread structure, and the spring elongation of the cylindrical spring 11 can be adjusted in a large stroke and the effective stress of the steel strand can be controlled by adjusting the cover plate nut 5, the adjusting screw rod 6 and the spring seat nut 13; in addition, when later maintenance, the control stress of the cable body can be effectively adjusted through the adjusting nut.
The adjusting anchor comprises an adjusting anchor plate 4 and a first working clamping piece 3 which is arranged in the through hole of the adjusting anchor plate and used in cooperation with the adjusting anchor plate, an inner hole is arranged in the working clamping piece along the axial direction, a steel strand 22 extending out of the end of the cable body penetrates out of the first working clamping piece 3, and a first anti-loosening device 2 is sleeved outside the extending end of the first working clamping piece 3; the fixed-end anchorage device comprises a fixed-end anchor plate 26 and a second working clamping piece 27 which is arranged in the through hole of the fixed-end anchor plate and used in cooperation with the anchor plate, an inner hole is formed in the second working clamping piece along the axial direction, a steel strand 22 extending out of the end of the cable body penetrates out of the second working clamping piece, a second anti-loosening device 28 is sleeved outside the extending end of the second working clamping piece 27, a fixed-end nut 25 is screwed on the outer wall of the fixed-end anchor plate 26, and a second buffer rubber pad 24 is pressed between the fixed-end nut and the fixed-end embedded backing plate 23; as shown in fig. 3, the anti-loosening device of the present invention comprises an anti-loosening pressing plate 32, which is a circular plate, and is provided with a through hole corresponding to the adjusting end anchor plate 4 or the fixing end anchor plate 26, and a pressing bolt 31 for pressing the working clamping piece 3 or 27 is inserted into the through hole, and the anti-loosening pressing plate is fixed with the adjusting end anchor plate or the fixing end anchor plate through a pressing screw 33; the adjusting end anchorage device and the fixed end anchorage device are both provided with anti-loosening devices, so that the stability of the anchoring performance is effectively improved; the end of the cable body 18 extending to the fixed end anchor is externally sleeved with a sealing device 21 with an opening at one end, and the opening end of the sealing sleeve extends out of the through hole in the middle of the fixed end embedded base plate 23 and the second buffer rubber pad 24 to be connected with a fixed end anchor plate 26; a deflector 20 is arranged in the middle of the embedded pipe, as shown in fig. 4 and 5, the deflector is provided with a fixing sleeve 34 arranged along the axial direction, one end of the fixing sleeve is opened, the other end of the fixing sleeve is provided with a through hole, the opened end of the fixing sleeve 34 is provided with an annular pressing plate 37, a deflector polymer layer 35 is filled in the fixing sleeve 34, the deflector polymer layer is connected with the fixing sleeve 34 and the annular pressing plate 37 through adjusting bolts, a horn-shaped through hole 38 is arranged in the deflector polymer layer 35, and the small end of the horn-shaped through hole corresponds to the through hole of the fixing sleeve; the deflector adopts adjustable structure, can suitably adjust the position of deflector compound through adjusting bolt according to the operating mode condition, and cable body axial centering effect can be better. The deflector compound is made of composite materials, has a guiding effect on multidirectional bending caused by earthquake, and relieves local bending stress generated on the connecting cable, so that the anchoring part is only subjected to axial force and has no bending stress and shearing force.
The composite protective layer is arranged outside the single steel strand, the composite protective layer is respectively an anti-corrosion grease layer (or paraffin) and a polyethylene sheath layer from inside to outside, the whole cable body is wrapped with the high-strength polyester belt and then wrapped with the polyethylene sheath through hot extrusion, the tensile stress of the polyethylene sheath is greatly reduced, the possibility of cracking of the polyethylene sheath is reduced, and the durability of the polyethylene sheath is improved. The three-layer corrosion prevention avoids corrosion of the whole bundle of steel strands due to corrosion of one part, prolongs the service life of the steel strands, prevents the steel strands from being squeezed and abraded by polyethylene damping during working due to the fact that each steel strand is isolated by the polyethylene damping, and greatly improves the fatigue durability of the inhaul cable.
The installation method of the beam falling prevention device comprises the following steps:
1. the whole rope body penetrates through a through hole reserved in each part of the beam falling prevention device;
2. installing a fixed end anchorage device, and installing according to the sequence: a fixed end pre-buried base plate 23, a second buffer rubber pad 24, a sealing device 21, a fixed end anchor plate 26, a fixed end nut 25, a second working clamping piece 27 and a second anti-loosening device 28;
3. the end is adjusted in the installation, installs according to the preface: an adjusting end embedded base plate 17, a first buffer rubber pad 16, an integrally installed viscous fluid damper, an adjusting end anchor plate 4, a first working clamping piece 3 and a first anti-loosening device 2;
4. according to the construction design requirement, the expansion amount of the cylindrical spring 11 is adjusted, the spring pressure is released by loosening the adjusting screw 6, and the expansion amount of the spring is adjusted through the cover plate nut 5 and the spring seat nut 13;
5. according to the working condition requirement, the length and the cable force of the stay cable can be effectively adjusted through the cover plate nut 5, the spring seat nut 13 or the fixed end nut 5;
6. installing a deflector 20;
7. checking each component and related parameters to be correct, and smearing anti-corrosion grease on the adjusting end and the anchoring end;
8. and installing two end protective covers.
The utility model discloses a prevent that roof beam device falls can install on the pier of bridge and the prefabricated case roof beam junction on the abutment, as shown in fig. 2, a is this prevents the roof beam device that falls, and b is the pier, and c is prefabricated case roof beam, and d is the abutment.
Claims (9)
1. The utility model provides an adjustable cable high damping combination formula prevents roof beam device that falls which characterized in that: the device comprises a cylindrical adjusting end protective cover (1) with an opening at one end, wherein an adjusting end anchorage device and a viscous fluid damper are sequentially arranged in the cylindrical adjusting end protective cover from inside to outside along the axial direction, an adjusting end embedded base plate (17) is connected to the outside of the opening end of the cylindrical adjusting end protective cover (1), and the viscous fluid damper is connected with the adjusting end embedded base plate (17) through a supporting cylinder (15); the cylindrical fixed end protection cover (29) is provided with an opening at one end, a fixed end anchorage device is arranged in the cylindrical fixed end protection cover along the axial direction, and a fixed end embedded base plate (23) is connected outside the opening end of the cylindrical fixed end protection cover; the adjusting end embedded base plate (17) is connected with the fixed end embedded base plate (23) through a pre-embedded pipe (19), a cable body (18) is arranged in the pre-embedded pipe (19) along the axial direction, and a steel strand (22) extending out of the cable body after one end of the cable body penetrates through the adjusting end embedded base plate (17) and enters the viscous fluid damper is inserted into the adjusting end anchorage; and the steel strand (22) extending out of the other end of the cable body (18) is inserted into the fixed end anchorage device.
2. The adjustable cable high damping combined beam-falling prevention device according to claim 1, characterized in that: first cushion rubber pads (16) are connected between the supporting cylinder (15) and the adjusting end embedded base plates (17) in a pressing mode, and through holes for the cable bodies (18) to penetrate are formed in the middle portions of the adjusting end embedded base plates (17), the supporting cylinder (15) and the first cushion rubber pads (16) respectively.
3. The adjustable cable high damping combined beam falling prevention device according to claim 1 or 2, wherein: the viscous fluid damper comprises an oil cylinder (10), a piston (7) of the oil cylinder is a hollow rod with openings at two ends, a cover plate nut (5) is screwed at one end of the piston (7) extending out of an end cover (8) at one end of the oil cylinder, the cover plate nut is connected with an adjusting end anchor plate (4) of the adjusting end anchor device, and a shaft shoulder of the cover plate nut (5) is connected with a front sealing plate (9) sleeved in the end cover (8) of the oil cylinder (10) through an adjusting screw rod (6); a rear sealing plate (14) is arranged at the other end of the oil cylinder (10), the other end of the piston (7) extends out of a through hole in the middle of the rear sealing plate (14), and one end of the cable body (18) penetrates into the piston (7); a convex ring (30) extending outwards is arranged on a section, between the front sealing plate (9) and the rear sealing plate (14), outside the rod wall of the piston (7), and the outer diameter of the convex ring is slightly smaller than the inner diameter of the oil cylinder (10) and is provided with a guiding copper layer; the supporting cylinder (15) is inserted between the inner wall of the rear end of the oil cylinder (10) and the rear sealing plate (14), and the outer wall of the oil cylinder (10) is in threaded connection with a spring seat nut (13).
4. The adjustable cable high damping combined beam falling prevention device according to claim 3, wherein: the adjusting end anchor comprises an adjusting end anchor plate (4) and a first working clamping piece (3) which is arranged in the through hole of the adjusting end anchor plate and used with the adjusting end anchor plate in a matched mode, wherein an inner hole is formed in the first working clamping piece in the axial direction, the steel strand of the cable body is led out of the first working clamping piece (3), and the outer end of the first working clamping piece (3) is extended to be in compression joint with a first anti-loosening device (2).
5. The adjustable cable high damping combined beam-falling prevention device according to claim 4, wherein: the stiff end ground tackle is provided with the hole along the axial including stiff end anchor slab (26) and second work clamping piece (27) that set up in this stiff end anchor slab through-hole and this anchor slab cooperation use in this second work clamping piece, steel strand wires (22) are followed wear out in the second work clamping piece (27) stretch out the end external pressure and have connect second locking device (28) stiff end anchor slab (26) outer wall spiro union has fixed end nut (25), this fixed end nut with the crimping has second cushion rubber pad (24) between stiff end pre-buried backing plate (23).
6. The adjustable cable high damping combined beam-falling prevention device according to claim 5, wherein: the second anti-loosening device comprises an anti-loosening pressing plate (32), the anti-loosening pressing plate is a circular plate, a through hole corresponding to the adjusting end anchor plate or the fixing end anchor plate is formed in the anti-loosening pressing plate, a pressing bolt (31) used for pressing the first working clamping piece or the second working clamping piece is inserted into the through hole in a penetrating mode, and the anti-loosening pressing plate is fixed with the adjusting end anchor plate or the fixing end anchor plate through a pressing screw (33).
7. The adjustable cable high damping combined beam-falling prevention device according to claim 6, wherein: the end of the cable body (18) extending to the fixed end anchor is sleeved with a sealing device (21) with one end being open, and the open end of the sealing device extends out of the through hole in the middle of the fixed end embedded base plate (23) and the second cushion rubber pad (24) to be connected with the fixed end anchor plate (26).
8. The adjustable cable high damping combined beam falling prevention device according to claim 7, wherein: a cylindrical spring (11) is arranged between the cover plate nut (5) and the spring seat nut (13); be provided with deviation device (20) in the middle part of the embedded pipe, this deviation device has fixed sleeve (34) that sets up along the axial, and the open other end of this fixed sleeve one end is equipped with the through-hole, fixed sleeve opens the end and is equipped with cyclic annular clamp plate (37) fixed sleeve intussuseption is filled with deviation device polymer layer (35), this deviation device polymer layer pass through adjusting bolt (36) with fixed sleeve (34) and cyclic annular clamp plate (37) are connected, be equipped with tubaeform through-hole (38) in deviation device polymer layer (35), the tip of this tubaeform through-hole with fixed sleeve's through-hole is corresponding.
9. The adjustable cable high damping combined beam falling prevention device according to claim 3, wherein: the damping medium (12) in the oil cylinder is dimethyl silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594620.0U CN210177349U (en) | 2019-04-28 | 2019-04-28 | Adjustable cable high-damping combined beam falling prevention device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594620.0U CN210177349U (en) | 2019-04-28 | 2019-04-28 | Adjustable cable high-damping combined beam falling prevention device |
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| Publication Number | Publication Date |
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| CN210177349U true CN210177349U (en) | 2020-03-24 |
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| CN201920594620.0U Active CN210177349U (en) | 2019-04-28 | 2019-04-28 | Adjustable cable high-damping combined beam falling prevention device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958054A (en) * | 2019-04-28 | 2019-07-02 | 柳州市邱姆预应力机械有限公司 | Cable adjustable high-damping combined fall boom device |
| CN111549653A (en) * | 2020-06-01 | 2020-08-18 | 中国地震局工程力学研究所 | Multistage antidetonation is prevented roof beam device that falls for precast box girder |
-
2019
- 2019-04-28 CN CN201920594620.0U patent/CN210177349U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958054A (en) * | 2019-04-28 | 2019-07-02 | 柳州市邱姆预应力机械有限公司 | Cable adjustable high-damping combined fall boom device |
| CN109958054B (en) * | 2019-04-28 | 2023-11-24 | 柳州市邱姆预应力机械有限公司 | Adjustable cable high damping combined beam falling prevention device |
| CN111549653A (en) * | 2020-06-01 | 2020-08-18 | 中国地震局工程力学研究所 | Multistage antidetonation is prevented roof beam device that falls for precast box girder |
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