CN110735402B - Super-long main cable strand paying-off machine for suspension bridge - Google Patents
Super-long main cable strand paying-off machine for suspension bridge Download PDFInfo
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- CN110735402B CN110735402B CN201911072681.1A CN201911072681A CN110735402B CN 110735402 B CN110735402 B CN 110735402B CN 201911072681 A CN201911072681 A CN 201911072681A CN 110735402 B CN110735402 B CN 110735402B
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- 239000000725 suspension Substances 0.000 title claims abstract description 47
- 238000013016 damping Methods 0.000 claims abstract description 56
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 239000006247 magnetic powder Substances 0.000 claims description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009977 dual effect Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Braking Arrangements (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to construction machinery in the field of prestress, in particular to an ultra-long main cable strand pay-off machine of a suspension bridge, which is formed by integrally connecting a base, a slewing bearing, a rotator, a connecting seat, a connecting rod, a rope bearing disc, a damping brake and an emergency brake through fasteners; the base is fixed on the ground, the inner ring of the slewing bearing is fixed on the base, the rotating body is fixed on the outer ring of the slewing bearing, the connecting seat is fixed on the rotating body, the rope bearing disc is arranged on the connecting seat, and the connecting seat and the rope bearing disc are fixedly connected through a connecting rod; the damping brake and the emergency brake are mounted on the base. The cable pay-off machine adopts a horizontal cable pay-off structure, simplifies the structure through the slewing bearing capable of bearing axial force and radial force, simultaneously has the functions of damping brake and emergency brake, realizes stable and quick brake under the dual actions of the damping brake and the emergency brake, and greatly improves the construction efficiency: the machine has the advantages of simple structure, easy operation and low manufacturing and installation cost.
Description
Technical Field
The invention relates to construction machinery in the field of prestress, in particular to an ultralong main cable strand paying-off machine for a suspension bridge.
Background
The main bearing member of the suspension bridge is suspension rope, which mainly bears tension, and generally, tens or more steel materials (steel wires, steel cables and the like) with high tensile strength are prefabricated into parallel steel wire strands in a factory, and are transported to a construction site together with a rope bearing disc after being coiled, and then are pulled and laid by a tractor (namely, a PPWS main cable frame is managed); along with the continuous refreshing record of the span of the suspension bridge in China, the main cable is longer and longer; in the process of cable releasing and erecting, the reverse pulling effect of the rear cable strand is not ideal due to uneven pulling speed, and particularly when the cable is temporarily stopped in the pulling process, the moment of inertia of a cable tray of an ultra-long main cable is very large, the phenomena of cable releasing of the main cable, such as broken belt, wire drum, hula hoop and the like, which are easy to occur, can seriously influence the synchronism and uniformity of the stress of the steel wire, and can seriously influence the erecting quality of the main cable; therefore, the performance of the main cable strand paying-off machine plays a vital role in the erection of the main cable strand.
The prior cable paying-off machine applicable to longer main cable strands mainly comprises the following modes: ① The utility model patent with the patent grant bulletin number of CN205576743U and the utility model of a mechanism for releasing a main rope of a suspension bridge catwalk discloses a mechanism for releasing the main rope of the suspension bridge catwalk, the utility model adopts a longitudinal rope releasing structure, a roller is directly arranged on a support by a rotating mechanism, a braking function is realized by a braking rope, the utility model applies the braking rope to regulate the rotating speed, the damping braking and the emergency braking are realized, the braking capability is obviously insufficient, and a hula hoop phenomenon is easy to occur when a rope disc cannot be stopped in a short time for an ultra-long main rope strand; ② The utility model patent with the patent grant publication number of CN2740574Y and the utility model of passive cable releasing device of main cable strand for suspension bridge construction discloses a passive cable releasing device of main cable strand for suspension bridge construction, which adopts a longitudinal cable releasing structure, a rotating mechanism mainly depends on a bearing, a braking function is realized through a damping mechanism and a speed changing mechanism, and a chuck, a rotating half shaft, a gear pair, a speed reducer and a coupling are in transmission connection with a torque motor; ③ The utility model patent with the publication number of CN103382703B discloses a main steel cable paying-off machine of a suspension bridge, which also adopts a longitudinal cable paying-off structure, has an overall structure similar to that of the patent CN2740574Y, and is mainly provided with a brake belt for braking in practice compared with the patent CN2740574Y, a rotating mechanism mainly depends on a bearing, a braking function is connected with a rotating shaft through a torque motor, a reduction gear and the like to form a braking mechanism, and an additional brake belt is used for realizing emergency braking; ④ The utility model patent with the patent grant publication number of CN201560392U and the utility model name of ' horizontal cable strand releasing device of suspension cable main cable strand ' discloses a horizontal cable releasing device of suspension cable main cable strand ', the utility model adopts a horizontal cable releasing structure, a rotating mechanism mainly depends on a bearing and a carrier roller, a braking mechanism mainly depends on two arc brake blocks of hydraulic braking to expand outwards and only depends on a brake hoop to stop a rotating disc, the utility model only has an emergency braking device, but does not have a damping braking device, the problem that the cable strand is not released at a uniform speed due to acceleration of the cable strand caused by inertia of the cable strand cannot be overcome, the cable strand overreleasing phenomenon can be caused, the braking mode cannot stop the cable strand in a short time for ultra-long cable strands, in addition, the utility model does not need to be transmitted to a construction site in a mode of prefabricating the cable strand at a factory, but needs to be sleeved on the rotating disc for the main cable strand prefabricated at the factory at the construction site, the cable strand is suspended from the bearing disc at the factory, and the cable strand is sleeved into the cable strand at the construction site, the cable strand arrangement is affected, and the cable strand overlength is not applicable to ultra-long cable strand and ultra-long cable strand is not suitable for being used.
By combining the above patents, ① and ④ are insufficient in braking force on an ultra-long cable, and damping braking and emergency braking are required to be simultaneously present; ①、② and ③ adopt a longitudinal rope-releasing structure, and the structure can cause the rope strands to be loosened due to the influence of the self weight of the rope strands, so that the rope strands are wound or rubbed with the ground, the rope strands are damaged, and the rope-releasing efficiency and quality of the rope strands are seriously influenced. The ② th and ③ th are both provided with bearings as rotating mechanisms, torque motors, reducers, couplings and the like as braking mechanisms, the structure, the manufacture and the operation are complex, the design and the manufacture cost are high, particularly for ultra-long cable strands, the bearings, the torque motors, the reducers, the couplings and the like with larger specification are required to be selected, and the whole equipment is large and heavy and needs to provide enough space on a construction site.
Disclosure of Invention
The invention aims at: the super-long main cable strand pay-off machine of the suspension bridge adopts a horizontal pay-off structure, simplifies the structure through a slewing bearing capable of bearing axial force and radial force, and simultaneously has damping braking and emergency braking functions so as to meet the requirements of constant-speed pay-off and short-time braking in the main cable strand pay-off process, and realizes stable and quick braking under the dual action of a damping brake and an emergency brake; the structure has the advantages of simplicity, easy operation, low manufacturing and installation cost and high construction efficiency, and well overcomes the defects of the prior art.
The technical scheme for solving the problems is as follows: the utility model provides a suspension bridge overlength main rope strand machine of putting which characterized in that: the suspension bridge ultra-long main cable strand paying-off machine is formed by connecting a base, a slewing bearing, a rotator, a connecting seat, a connecting rod, a rope bearing disc, a damping brake and an emergency brake into a whole through fasteners;
The base is fixed on the ground, the inner ring of the slewing bearing is fixed on the base, the rotating body is fixed on the outer ring of the slewing bearing, the connecting seat is fixed on the rotating body, the rope bearing disc is arranged on the connecting seat, and the connecting seat and the rope bearing disc are fixedly connected through a connecting rod; the damping brake and the emergency brake are mounted on the base.
The further technical scheme of the suspension bridge ultra-long main cable strand paying-off machine is as follows: the base comprises a base supporting ring, a slewing bearing connecting ring, a reinforcing rib bottom ring, a base reinforcing rib, a base fixing rib and inner and outer reinforcing ribs of the slewing bearing connecting ring;
The base support ring is welded with m base fixing ribs and n rows of base reinforcing ribs respectively to form a stable stress plane which is in contact with the ground, and L base lifting lugs are arranged on the base fixing ribs; the slewing bearing connecting ring for installing the slewing bearing is fixed above the base supporting ring, a through hole is formed in the slewing bearing connecting ring, and inner and outer reinforcing ribs for connecting the base supporting ring and the slewing bearing connecting ring are arranged on the inner and outer walls of the base supporting ring;
the outer diameter of the base support ring is smaller than the reference circle of the through hole on the slewing bearing connecting ring;
P damping brake mounting pads are arranged on the base reinforcing ribs, and the positions of the damping brake mounting pads are on a dividing circle, and threaded holes or through holes are formed in the damping brake mounting pads;
q emergency brake mounting pads are arranged on the base fixing ribs, and the positions of the emergency brake mounting pads are on a dividing circle, and threaded holes or through holes are formed in the emergency brake mounting pads;
The value range of m, n, L, P, Q is that m is more than or equal to 2, n is more than or equal to 3, L is more than or equal to 1, P is more than or equal to 3, and Q is more than or equal to 3.
The slewing bearing comprises a slewing bearing outer ring and a slewing bearing inner ring, the outer edge of the slewing bearing outer ring is provided with a gear, the upper plane and the lower plane of the slewing bearing outer ring are staggered and not flush with the upper plane and the lower plane of the slewing bearing inner ring, through holes are formed in the slewing bearing outer ring and the slewing bearing inner ring, the positions and the number of the through holes formed in the slewing bearing inner ring are matched with those of the through holes formed in the slewing bearing connecting ring, and the slewing bearing inner ring is fixedly connected with the slewing bearing connecting ring of the base through bolts.
The rotary body consists of a brake disc, a connecting seat supporting ring reinforcing rib, a connecting seat supporting ring and a rotary body supporting ring, wherein the connecting seat supporting ring and the brake disc are two circular rings with different diameters, and are connected into a whole through the circular rotary body supporting ring, and the connecting seat supporting ring reinforcing rib is welded with the brake disc, the connecting seat supporting ring and the rotary body supporting ring simultaneously;
The brake disc on open and to have the through-hole, the position of through-hole, the through-hole position and quantity and slewing bearing's slewing bearing outer lane go up the through-hole phase-match that opens, the brake disc passes through bolted connection with slewing bearing outer lane fixedly, the connecting seat accept and open and to have X through-holes on the ring, X's value range is: x is more than or equal to 3.
The connecting seat consists of a connecting seat outer ring, a mounting lifting lug, a connecting seat fixing rib, a connecting seat bottom plate and a connecting seat inner ring; the connecting seat bottom plate is circular, the connecting seat inner ring is cylindrical, the connecting seat outer ring, the connecting seat fixing rib and the connecting seat inner ring are welded on the connecting seat bottom plate, the L mounting lifting lugs are arranged on the connecting seat fixing rib and extend out of the connecting seat outer ring, the number of the mounting lifting lugs is matched with that of the lifting lugs of the rope bearing disc, the number and the positions of the through holes on the connecting seat bottom plate are matched with those of the X through holes on the connecting seat bearing ring, and the connecting seat is fixedly connected with the rotating body through bolts; the quantity Y of the fixed points of connection of the connecting seat and the rope bearing disc is the same, and the value range of Y is as follows: y is more than or equal to 3.
The connecting rod is L-shaped, two through holes are formed in the connecting rod, and the connecting rod is fixedly connected with the connecting seat and the rope bearing disc through pin shafts or bolts.
The damping brake is a scissor type, and consists of 2 force arms, an adjusting screw, an adjusting turntable, 2 brake block mounting blocks, 2 brake blocks, a supporting seat and an adjusting shaft, wherein three through holes are formed in the two force arms at unequal intervals, the middle of the damping brake is fixed on the supporting seat, the two sides of the damping brake are respectively connected with the 2 brake block mounting blocks and the adjusting shaft, and the 2 brake block mounting blocks, the supporting seat and the adjusting shaft are movably connected and rotatable; one side of the adjusting screw is provided with a right-handed thread, the other side of the adjusting screw is provided with a left-handed thread, the center of the adjusting turntable is provided with a through hole, the adjusting screw penetrates through the center hole of the adjusting turntable, and the adjusting turntable is welded at the middle position of the adjusting screw;
The damping brake provides power in a hydraulic, pneumatic or electric mode to enable the upper brake pad and the lower brake pad to act on the brake disc to generate damping braking.
The emergency braking brake consists of a bearing mounting seat, a bearing, a brake mounting seat, a connecting shaft, a limit key, a pressing block, a gear and a brake, wherein the gear is connected with the brake through the connecting shaft, the limit key and the pressing block to form a braking whole; the bearing mounting seat, the bearing and the brake mounting seat are used for fixing a braking whole formed by connecting the gear, the connecting shaft, the limit key, the pressing block and the brake mounting seat; the brake is an electromagnetic brake, a magnetic powder brake or a brake which is powered by hydraulic, pneumatic or electric power to enable a gear to act on teeth of the slewing bearing so as to generate emergency braking.
The extra-long main cable strand pay-off machine of the suspension bridge has the further technical scheme that: the connecting seat is also provided with Z-piece connecting seat lengthening parts, each connecting seat lengthening part comprises a connecting block, an extension rod front end plate and an extension rod rear end plate, the connecting block is fixed on the side surface of the outer ring of the connecting seat, the extension rod front end plate is welded at one end of the extension rod, and a through hole is formed in the extension rod front end plate; the extension rod front end plate is fixedly connected with the connecting block through bolts or screws, the extension rod rear end plate is welded at the other end of the extension rod, the front opening at the other end of the extension rod is sealed, and the value range of Z is as follows: z is more than or equal to 3.
The external shape of the adjusting turntable is round, square, external hexagon or external quadrangle.
The outer ring of the connecting seat, the fixing ribs of the connecting seat and the inner ring of the connecting seat are made of section steel.
Due to the adoption of the structure, the suspension bridge ultra-long main cable strand paying-off machine has the following beneficial effects:
1. The invention discloses a suspension bridge overlength main cable strand rope-releasing machine, which adopts a horizontal rope-releasing structure, simplifies the structure through a slewing bearing capable of bearing axial force and radial force, and simultaneously has damping braking and emergency braking functions so as to meet the requirements of constant-speed rope releasing and short-time braking in the main cable strand rope releasing process, realizes stable and quick braking under the dual functions of a damping brake and an emergency brake, and greatly improves the construction efficiency:
1. greatly improves the construction efficiency: the cable pay-off machine consists of a base, a slewing bearing, a rotating body, a connecting seat, a connecting rod, a cable carrying disc, a damping brake, an emergency brake and the like, wherein the base is fixed on the ground, an inner ring of the slewing bearing is fixed on the base, the rotating body is fixed on an outer ring of the slewing bearing, the connecting seat is fixed on the rotating body, the cable carrying disc which is coiled with a main cable strand in a factory can be vertically hoisted on the connecting seat after being transported to a construction site, and then the cable carrying disc is fixedly connected on the connecting seat by the connecting rod.
2. The suspension bridge overlength main cable strand paying-off machine adopts a horizontal cable paying-off structure, simplifies the structure through a slewing bearing capable of bearing axial force and radial force, has the functions of damping braking and emergency braking, and can enable a cable disc to stably brake within 3 seconds, and the cable paying-off speed reaches 30m/min; so as to meet the requirements of constant-speed rope unwinding and short-time braking in the process of unwinding the main rope strands.
The base of the suspension bridge overlength main cable strand paying-off machine and the inner ring of the slewing bearing are fixed relative to the ground, and the outer ring of the slewing bearing, the rotator, the connecting seat, the rope bearing disc and the main cable strand form integral rotation, so that the rope paying-off function is realized when the traction machine pulls the hanging rope; the brake disc is arranged on the rotating body, the damping brake is arranged on the base, the damping brake is in a scissor type, brake pads are respectively arranged on the upper part and the lower part of the damping brake, and the brake pads act on the brake disc of the rotating body to overcome acceleration caused by traction force, so that uniform rope unwinding is realized; the slewing bearing is externally toothed, a brake is arranged on the base, a gear is arranged on the brake, and the gear is matched with the externally toothed part of the slewing bearing; the brake is in a normally open state, when emergency braking is needed in the process of releasing the cable, the brake is electrified, braking is closed, and emergency braking is realized through gear braking; under the dual functions of the damping brake and the emergency brake, stable braking is realized.
2. The structure of the suspension bridge overlength main cable strand paying-off machine is firmer and more reliable, and the suspension bridge overlength main cable strand paying-off machine has good stability and long service life.
Compared with the traditional method that two bearings with larger specifications bear axial force and radial force respectively as main stress pieces, the super-long main cable strand pay-off machine for the suspension bridge is more firm and reliable in structure, and the stress surfaces are more symmetrical due to the large outer diameter of the slewing bearing used by the super-long main cable strand pay-off machine for the suspension bridge, can bear the axial force and the radial force simultaneously, and greatly improves the stability and the service life of the pay-off machine. The main cable strand pay-off machine is simpler in structure, easier to manufacture and install and cheaper in manufacturing cost compared with the traditional braking mode of connecting gears by using a motor and a speed reducer.
3. Compared with the traditional braking mode of connecting gears by using a motor and a speed reducer, the suspension bridge ultra-long main cable strand paying-off machine is simpler in structure, easier to manufacture and install, more convenient to operate, low in manufacturing cost and small in occupied area, and can realize quick replacement of a cable tray by connecting an L-shaped connecting rod and a lifting lug.
The technical characteristics of the super-long main cable strand pay-off machine for the suspension bridge of the invention are further described below with reference to the accompanying drawings and the embodiments.
Drawings
Fig. 1-1 to 1-2 are schematic views of the overall structure of a super-long main cable strand paying-off machine for a suspension bridge according to the present invention:
fig. 1-1: front view, fig. 1-2: a perspective view;
fig. 2 is a schematic diagram of a base structure of a suspension bridge ultra-long main rope strand paying-off machine according to the present invention:
fig. 3 is a schematic view of a slewing bearing structure of a suspension bridge overlength main rope strand paying-off machine according to the present invention:
Fig. 4 is a schematic diagram of a rotating body structure of an ultralong main rope strand paying-off machine for a suspension bridge according to the present invention:
fig. 5 is a schematic structural diagram of a connection seat of an extra-long main cable strand pay-off machine for a suspension bridge according to the present invention:
Fig. 6 is a schematic view of a structure of a connecting seat extension rod of a suspension bridge ultra-long main cable strand paying-off machine according to the present invention:
fig. 7 is a schematic diagram of a connecting rod structure of a suspension bridge ultra-long main cable strand paying-off machine according to the present invention:
FIG. 8 is a schematic diagram of a damping brake of a suspension bridge overlength main rope strand paying-off machine according to the present invention:
Fig. 9 to 10 are schematic diagrams of an emergency brake of a suspension bridge overlength main cable strand paying-off machine according to the present invention:
fig. 9: fig. 10, a front sectional view: a perspective view;
FIG. 11 is a schematic view of the structure of the base fixing rib and the connecting base fixing rib of the present invention.
In the figure:
1-base, 11-base lifting lugs, 12-base reinforcing ribs, 13-base fixing ribs, 14-slewing bearing connecting rings, 15-reinforcing rib bottom rings, 17-damping brake mounting pads, 16-slewing bearing connecting rings inner and outer reinforcing ribs, 18-base supporting rings and 19-emergency brake mounting pads;
2-slewing bearing, 21-slewing bearing outer ring and 22-slewing bearing inner ring;
3-rotating body, 31-brake disc, 32-connecting seat bearing ring reinforcing ribs, 33-connecting seat bearing ring and 34-rotating body supporting ring;
The connecting seat comprises a 4-connecting seat, a 41-connecting seat outer ring, a 42-mounting lifting lug, a 43-connecting seat fixing rib, a 44-connecting seat bottom plate, a 45-connecting seat inner ring, a 46-connecting block, a 47-extending rod front end plate, a 48-extending rod and a 49-extending rod rear end plate;
5-connecting rods and 6-rope bearing discs;
7-damping brake, 71-force arm, 72-adjusting screw, 73-adjusting turntable, 74-brake block mounting block, 75-brake block, 76-supporting seat and 77-adjusting shaft;
8-an emergency brake, 81-a bearing mounting seat; 82-bearing; 83-brake mount; 84-connecting shaft; 85-limit keys; 86-briquetting; 87-gear; 88-a brake; XG-section steel, HF-weld.
Detailed Description
A suspension bridge ultra-long main cable strand paying-off machine.
1-2, The super-long main cable strand pay-off machine of the suspension bridge is formed by integrally connecting a base 1, a slewing bearing 2, a rotator 3, a connecting seat 4, a connecting rod 5, a rope bearing disc 6, a damping brake 7 and an emergency brake 8 through fasteners;
The base 1 is fixed on the ground, the inner ring of the slewing bearing 2 is fixed on the base, the rotating body 3 is fixed on the outer ring of the slewing bearing 2, the connecting seat 4 is fixed on the rotating body 3, the rope bearing disk 6 is arranged on the connecting seat 4, and the connecting seat 4 and the rope bearing disk 6 are fixedly connected through a connecting rod 5 and a pin shaft or a bolt; a damper brake 7 and an emergency brake 8 are mounted on the base 1.
As shown in fig. 2, the base 1 comprises a base supporting ring 18, a slewing bearing connecting ring 14, a reinforcing rib bottom ring 15, a base reinforcing rib 12, a base fixing rib 13 and inner and outer reinforcing ribs 16 of the slewing bearing connecting ring;
The base support ring 18 is welded with m base fixing ribs 13 and n rows of base reinforcing ribs 12 respectively to form a stable stress plane which is in contact with the ground, and L base lifting lugs 11 are arranged on the base fixing ribs 13; the slewing bearing connecting ring 14 for installing the slewing bearing 2 is fixed above the base supporting ring 18, a through hole is formed in the slewing bearing connecting ring 14, and inner and outer reinforcing ribs 16 for connecting the base supporting ring 18 and the slewing bearing connecting ring 14 are welded on the inner and outer walls of the base supporting ring 18, so that the stress and force transmission capacity of the slewing bearing connecting ring 14 and the slewing bearing connecting ring 14 is enhanced;
The outer diameter of the base support ring 18 is smaller than the reference circle of the through hole on the slewing bearing connecting ring 14;
P damping brake mounting pads 17 are arranged on the base reinforcing ribs 12, the positions of the damping brake mounting pads are on a dividing circle, threaded holes or through holes are formed in the damping brake mounting pads, and the distance between the damping brake mounting pads and the center is determined by the size of the damping brake 7; q emergency brake mounting pads 19 are arranged on the base fixing ribs 13, the positions of the emergency brake mounting pads are on a dividing circle, threaded holes or through holes are formed in the emergency brake mounting pads, and the distance between the emergency brake mounting pads and the center is determined by the size of the emergency brake;
The value range of m, n, L, P, Q is that m is more than or equal to 2, n is more than or equal to 3, L is more than or equal to 1, P is more than or equal to 3, and Q is more than or equal to 3.
As shown in fig. 3, the slewing bearing 2 is composed of a slewing bearing outer ring 21 and a slewing bearing inner ring 22, the outer edge of the slewing bearing outer ring 21 is provided with a gear, the upper and lower planes of the slewing bearing outer ring 21 and the upper and lower planes of the slewing bearing inner ring 22 are staggered and not flush, through holes are formed in the slewing bearing outer ring 21 and the slewing bearing inner ring 22, the positions and the number of the through holes formed in the slewing bearing inner ring 22 are matched with those of the through holes formed in the slewing bearing connecting ring 14, and the slewing bearing inner ring 22 and the slewing bearing connecting ring 14 of the base 1 are connected and fixed through bolts.
As shown in fig. 4, the rotor 3 is composed of a brake disc 31, a connection seat receiving ring reinforcing rib 32, a connection seat receiving ring 33 and a rotor supporting ring 34, the connection seat receiving ring 33 and the brake disc 31 are two circular rings with unequal diameters, and are connected into a whole through the circular rotor supporting ring 34, and the connection seat receiving ring reinforcing rib 32 is welded with the brake disc 31, the connection seat receiving ring 33 and the rotor supporting ring 34 at the same time so as to enhance the stress and force transmission performance of the rotor.
The brake disc 31 on open and have the through-hole, the position of through-hole, the through-hole position and quantity and the slewing bearing outer lane 21 of slewing bearing 2 on open the through-hole phase-match, the brake disc 31 passes through bolted connection with slewing bearing outer lane 21 and fixes, the connecting seat accept and open and have X through-holes on the ring 33, X's value range is: x is more than or equal to 3.
As shown in fig. 5, the connecting seat 4 is composed of a connecting seat outer ring 41, a mounting lug 42, a connecting seat fixing rib 43, a connecting seat bottom plate 44 and a connecting seat inner ring 45; the connecting seat bottom plate 44 is circular, the connecting seat inner ring 45 is cylindrical, the connecting seat outer ring 41, the connecting seat fixing ribs 43 and the connecting seat inner ring 45 are all formed steel and welded on the connecting seat bottom plate 44 so as to ensure the upper and lower flatness of the connecting seat 4 and ensure that the rope bearing disk 6 is attached to the connecting seat 4 smoothly;
The L mounting lifting lugs 42 are arranged on the connecting seat fixing ribs 43 and extend out of the outer ring 41 of the connecting seat, the number of the mounting lifting lugs 42 is matched with that of the lifting lugs of the rope bearing disk 6, the number and the positions of through holes on the bottom plate 44 of the connecting seat are matched with those of X through holes on the bearing ring 33 of the connecting seat, and the connecting seat 4 is fixedly connected with the rotating body 3 through bolts; the number Y of the fixed points of connection of the connection base 4 and the rope bearing disk 6 is the same, and the range of the value of Y is as follows: y is more than or equal to 3.
In the construction process, the lengthening part of the Z-block connecting seat can be temporarily added on the connecting seat 4 according to the requirement, the plane of the bearing rope body of the connecting seat 4 is enlarged, and the main rope strand can be prevented from falling off when falling off;
As shown in fig. 6, each connecting seat extension part comprises a connecting block 46, an extension rod 48, an extension rod front end plate 47 and an extension rod rear end plate 49, wherein the connecting block 46 is fixed on the side surface of the outer ring 41 of the connecting seat, and the extension rod front end plate 47 is welded at one end of the extension rod 48 and provided with a through hole; the extension rod front end plate 47 is fixedly connected with the connecting block 46 through bolts or screws, the extension rod rear end plate 49 is welded at the other end of the extension rod 48, the front opening at the other end of the extension rod is sealed, the cable strand is prevented from being scratched and the constructor is protected, and the value range of Z is as follows: z is more than or equal to 3.
As shown in fig. 7, the connecting rod 5 is L-shaped, two through holes are formed in the connecting rod 5, and the connecting rod 5 is fixedly connected with the connecting seat 4 and the rope bearing disc 6 through pin shafts or bolts.
As shown in fig. 8, the damping brake 7 is a scissor type, the damping brake 7 is composed of 2 force arms 71, an adjusting screw 72, an adjusting turntable 73, 2 brake block mounting blocks 74, 2 brake blocks 75, a supporting seat 76 and an adjusting shaft 77, three through holes are formed in the two force arms 71 at unequal intervals, the middle of the two force arms 71 are fixed on the supporting seat 76, two sides of the two force arms are respectively connected with the 2 brake block mounting blocks 74 and the adjusting shaft 77,2, and the two brake block mounting blocks 74, the supporting seat 76 and the adjusting shaft 77 are movably connected with the force arms 71 and can rotate; the right-handed threads are arranged on one side of the adjusting screw 72, the left-handed threads are arranged on the other side of the adjusting screw, the adjusting turntable 73 is a flat circular plate or square plate with a through hole in the center, so that when the adjusting screw is adjusted by hand, the contact area is large, tool-free adjustment can be realized, the adjusting screw 72 penetrates through the center hole of the adjusting turntable 73, and the adjusting turntable 73 is welded at the middle position of the adjusting screw;
The shape of the adjusting turntable 73 is round, square, hexagonal or tetragonal, and the preferable scheme is round;
The damping brake 7 is powered by hydraulic, pneumatic or electric means to cause the upper and lower brake pads to act on the brake disc 31 to produce damping braking.
As shown in fig. 9, the emergency brake 8 is composed of a bearing mounting seat 81, a bearing 82, a brake mounting seat 83, a connecting shaft 84, a limit key 85, a pressing block 86, a gear 87 and a brake 88, wherein the gear 87 is connected with the brake 88 into a whole through the connecting shaft 84, the limit key 85 and the pressing block 86; the bearing seat mounting seat 81, the bearing 82 and the mounting seat 83 are used for fixing a braking whole formed by connecting a gear 87, a connecting shaft 84, a limit key 85, a pressing block 86 and a brake 88;
The brake 88 is either an electromagnetic brake or a magnetic powder brake or a brake which is powered by hydraulic, pneumatic or electric power to enable the gear 87 to act on the teeth of the slewing bearing 2 so as to generate emergency braking; the preferable scheme is an electromagnetic brake.
The rope releasing process of the invention, namely the rope releasing machine for the overlength main rope strand of the suspension bridge, is applied to the main rope strand as follows:
After a rope bearing disc of a main rope strand coiled in a factory is transported to a construction site, the rope bearing disc can be vertically hoisted on a connecting seat 4 of an ultralong main rope strand paying-off machine of a suspension bridge, and then is fixedly connected with the connecting seat 4 by a connecting rod 5, so that the time for replacing the rope bearing disc is shortened by means of vertical hoisting and the connecting rod, and the construction efficiency is improved; the base 1 and the inner ring of the slewing bearing 2 are fixed relative to the ground, and the outer ring of the slewing bearing 2, the rotator 3, the connecting seat 4, the rope bearing disc 6 and the main rope strand form integral rotation, so that the rope releasing function is realized when the traction machine pulls the rope.
The rotary body 3 is provided with a brake disc, the damping brake 7 is arranged on the base 1, the damping brake 7 is in a scissor type, brake pads are respectively arranged on the upper part and the lower part of the damping brake 7, braking force is adjusted through a reverse threaded rod, and the brake pads act on the brake disc of the rotary body to overcome acceleration caused by traction force, so that uniform rope unwinding is realized; the slewing bearing 2 is externally toothed, the emergency brake actuator 8 is arranged on the base 1, the emergency brake actuator 8 is provided with a gear, and the gear is matched with the external teeth of the slewing bearing; the brake 8 is in a normally open state, when emergency braking is needed in the process of releasing the cable, the brake is electrified, the brake is closed, and the emergency braking is realized through gear braking; under the dual action of the damping brake 7 and the emergency brake 8, smooth braking is realized.
Claims (4)
1. The utility model provides a suspension bridge overlength main rope strand machine of putting which characterized in that: the super-long main cable strand pay-off machine of the suspension bridge is formed by connecting a base (1), a slewing bearing (2), a rotator (3), a connecting seat (4), a connecting rod (5), a rope bearing disc (6), a damping brake (7) and an emergency brake (8) into a whole through fasteners;
The base (1) is fixed on the ground, the inner ring of the slewing bearing (2) is fixed on the base, the rotating body (3) is fixed on the outer ring of the slewing bearing (2), the connecting seat (4) is fixed on the rotating body (3), the rope bearing disc (6) is arranged on the connecting seat (4), and the connecting seat (4) and the rope bearing disc (6) are fixedly connected through the connecting rod (5); the damping brake (7) and the emergency brake (8) are arranged on the base (1);
The base (1) comprises a base supporting ring (18), a slewing bearing connecting ring (14), a reinforcing rib bottom ring (15), a base reinforcing rib (12), a base fixing rib (13) and inner and outer reinforcing ribs (16) of the slewing bearing connecting ring;
The base support ring (18) is welded with m base fixing ribs (13) and n rows of base reinforcing ribs (12) respectively to form a stable stress plane which is in contact with the ground, and L base lifting lugs (11) are arranged on the base fixing ribs (13); the slewing bearing connecting ring (14) for installing the slewing bearing is fixed above the base supporting ring (18), a through hole is formed in the slewing bearing connecting ring (14), and inner and outer reinforcing ribs (16) for connecting the base supporting ring (18) and the slewing bearing connecting ring (14) are arranged on the inner and outer walls of the base supporting ring (18);
the outer diameter of the base support ring (18) is smaller than the reference circle of the through hole on the slewing bearing connecting ring (14);
p damping brake mounting pads (17) are arranged on the base reinforcing ribs (12), and the positions of the damping brake mounting pads are on a dividing circle, and threaded holes or through holes are formed in the damping brake mounting pads;
q emergency brake mounting pads (19) are arranged on the base fixing ribs (13), and the positions of the emergency brake mounting pads are on a dividing circle, and threaded holes or through holes are formed in the positions of the emergency brake mounting pads;
The value range of m, n, L, P, Q is that m is more than or equal to 2, n is more than or equal to 3, L is more than or equal to 1, P is more than or equal to 3, and Q is more than or equal to 3;
The slewing bearing (2) consists of a slewing bearing outer ring (21) and a slewing bearing inner ring (22), gears are arranged on the outer edge of the slewing bearing outer ring (21), the upper and lower planes of the slewing bearing outer ring (21) and the upper and lower planes of the slewing bearing inner ring (22) are staggered and not flush, through holes are formed in the slewing bearing outer ring (21) and the slewing bearing inner ring (22), the positions and the number of the through holes formed in the slewing bearing inner ring (22) are matched with those of the through holes formed in the slewing bearing connecting ring (14), and the slewing bearing inner ring (22) is fixedly connected with the slewing bearing connecting ring (14) of the base (1) through bolts;
The rotary body (3) consists of a brake disc (31), a connecting seat supporting ring reinforcing rib (32), a connecting seat supporting ring (33) and a rotary body supporting ring (34), wherein the connecting seat supporting ring (33) and the brake disc (31) are two circular rings with unequal diameters, the two circular rings are connected into a whole through the circular rotary body supporting ring (34), and the connecting seat supporting ring reinforcing rib (32) is welded with the brake disc (31), the connecting seat supporting ring (33) and the rotary body supporting ring (34) at the same time;
The brake disc (31) on open and to have the through-hole, the position of through-hole, the through-hole position and quantity and slewing bearing (2) slewing bearing outer lane (21) on open the through-hole phase-match, brake disc (31) are fixed through bolted connection with slewing bearing outer lane (21), connecting seat accept and open on ring (33) have X through-holes, X's value range is: x is more than or equal to 3;
The connecting seat (4) consists of a connecting seat outer ring (41), a mounting lifting lug (42), a connecting seat fixing rib (43), a connecting seat bottom plate (44) and a connecting seat inner ring (45); the connecting seat bottom plate (44) is circular, the connecting seat inner ring (45) is cylindrical, the connecting seat outer ring (41), the connecting seat fixing rib (43) and the connecting seat inner ring (45) are welded on the connecting seat bottom plate (44), the L mounting lifting lugs (42) are arranged on the connecting seat fixing rib (43) and extend out of the connecting seat outer ring (41), the number of the mounting lifting lugs (42) is matched with that of the rope bearing disc (6), the number and the positions of through holes on the connecting seat bottom plate (44) are matched with those of X through holes on the connecting seat bearing ring (33), and the connecting seat (4) is fixedly connected with the rotating body (3) through bolts; the number Y of the connecting fixing points of the connecting seat (4) and the spanners (6) is the same, and the value range of Y is as follows: y is more than or equal to 3;
The connecting rod (5) is L-shaped, two through holes are formed in the connecting rod (5), and the connecting rod (5) is connected with the fixed connecting seat (4) and the rope bearing disc (6) through pin shafts or bolts;
the damping brake (7) is a scissor type, the damping brake (7) consists of 2 force arms (71), an adjusting screw (72), an adjusting turntable (73), 2 brake block mounting blocks (74), 2 brake blocks (75), a supporting seat (76) and an adjusting shaft (77), three through holes are formed in the two force arms (71) at unequal intervals, the middle of the damping brake is fixed on the supporting seat (76), the two sides of the damping brake are respectively connected with the 2 brake block mounting blocks (74) and the adjusting shaft (77), and the 2 brake block mounting blocks (74), the supporting seat (76) and the adjusting shaft (77) are movably connected with the force arms (71) and are rotatable; one side of the adjusting screw (72) is provided with a right-handed thread, the other side of the adjusting screw is provided with a left-handed thread, the center of the adjusting turntable (73) is provided with a through hole, the adjusting screw (72) penetrates through the center hole of the adjusting turntable (73), and the adjusting turntable (73) is welded at the middle position of the adjusting screw;
The damping brake (7) provides power in a hydraulic, pneumatic or electric mode to enable the upper brake pad and the lower brake pad to act on the brake disc (31) to generate damping braking;
The emergency braking brake (8) is composed of a bearing mounting seat (81), a bearing (82), a brake mounting seat (83), a connecting shaft (84), a limit key (85), a pressing block (86), a gear (87) and a brake (88), wherein the gear (87) is connected with the brake (88) into a whole through the connecting shaft (84), the limit key (85) and the pressing block (86); the bearing mounting seat (81), the bearing (82) and the brake mounting seat (83) are used for fixing a gear (87), a connecting shaft (84), a limit key (85) and a brake whole formed by connecting a pressing block (86) with the brake mounting seat (83); the brake (88) is an electromagnetic brake, a magnetic powder brake or a brake which is powered by hydraulic, pneumatic or electric power to enable the gear (87) to act on the teeth of the slewing bearing (2) so as to generate emergency braking.
2. A suspension bridge overlength main strand payout machine as defined in claim 1, wherein: the connecting seat (4) is also provided with Z-piece connecting seat lengthening parts, each connecting seat lengthening part comprises a connecting block (46), an extension rod (48), an extension rod front end plate (47) and an extension rod rear end plate (49), the connecting block (46) is fixed on the side surface of an outer ring (41) of the connecting seat, and the extension rod front end plate (47) is welded at one end of the extension rod (48) and provided with a through hole; the extension rod front end plate (47) is fixedly connected with the connecting block (46) through bolts or screws, the extension rod rear end plate (49) is welded at the other end of the extension rod (48), the front opening at the other end of the extension rod is sealed, and the value range of Z is as follows: z is more than or equal to 3.
3. A suspension bridge overlength main strand payout machine as defined in claim 1, wherein: the external shape of the adjusting turntable (73) is round, square, hexagonal or tetragonal.
4. A suspension bridge overlength main strand payout machine as defined in claim 1, wherein: the outer ring (41), the fixing ribs (43) and the inner ring (45) are made of section steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911072681.1A CN110735402B (en) | 2019-11-05 | 2019-11-05 | Super-long main cable strand paying-off machine for suspension bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911072681.1A CN110735402B (en) | 2019-11-05 | 2019-11-05 | Super-long main cable strand paying-off machine for suspension bridge |
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| CN110735402B true CN110735402B (en) | 2024-10-01 |
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| CN113699889A (en) * | 2021-08-24 | 2021-11-26 | 江苏法尔胜缆索有限公司 | Construction method for erecting main cable strand in space of three-tower self-anchored suspension bridge |
| CN116377883A (en) * | 2023-05-17 | 2023-07-04 | 中国十七冶集团有限公司 | Cable releasing device for cable-stayed bridge construction and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211815599U (en) * | 2019-11-05 | 2020-10-30 | 柳州欧维姆机械股份有限公司 | Cable releasing machine for super-long main cable strand of suspension bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2630308Y (en) * | 2003-06-09 | 2004-08-04 | 上海市基础工程公司 | Bridge rope placing apparatus |
| CN201560392U (en) * | 2009-10-30 | 2010-08-25 | 上海浦江缆索股份有限公司 | Horizontal paying out device of suspension cable main cable strands |
| CN201581352U (en) * | 2009-10-30 | 2010-09-15 | 上海浦江缆索股份有限公司 | Cable release device |
| US20130248638A1 (en) * | 2010-12-17 | 2013-09-26 | Zhejiang Pujiang Cable Co., Ltd. | Method for Horizontally Winding and Unwinding a Parallel Wire Strand |
| CN205576743U (en) * | 2016-03-08 | 2016-09-14 | 贵州中交贵瓮高速公路有限公司 | A mechanism that is used for suspension bridge catwalk main rope to put cable |
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| CN211815599U (en) * | 2019-11-05 | 2020-10-30 | 柳州欧维姆机械股份有限公司 | Cable releasing machine for super-long main cable strand of suspension bridge |
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