CN112663504B - Moving device for anchoring prestressed steel beams - Google Patents
Moving device for anchoring prestressed steel beams Download PDFInfo
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- CN112663504B CN112663504B CN202011514238.8A CN202011514238A CN112663504B CN 112663504 B CN112663504 B CN 112663504B CN 202011514238 A CN202011514238 A CN 202011514238A CN 112663504 B CN112663504 B CN 112663504B
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Abstract
The invention discloses a moving device for anchoring a prestressed steel beam, wherein two sides of a connecting rod are respectively rotatably provided with a screw rod, one end of the screw rod, which is far away from the connecting rod, is rotatably sleeved with a fixed sleeve, the fixed sleeve is connected with the bottom end of a first connecting plate, one end of the screw rod, which is far away from the connecting rod, is connected with the output end of a driving motor, the driving motor is arranged on the fixed sleeve, a threaded sleeve is sleeved on the screw rod in a threaded manner, the fixed sleeve and the threaded sleeve are respectively provided with a second connecting plate, the bottom end of the second connecting plate is provided with an installation plate, the installation plate connected with the threaded sleeve is provided with an installation seat, the installation plate connected with the fixed sleeve is sleeved with a sleeve, and the installation plate connected with the threaded sleeve is connected with one end of a sliding rod; the anchoring trolley realizes the anchoring of the prestressed broken beam and the linear beam on the same section, and is convenient for the prestressed anchoring of the pre-tensioned precast beam plate; the integral tensioning and releasing of the pre-tensioned beam plate prestress broken wire harness and the linear harness are facilitated; the design is simple, the rigidity is large, the deformation is small, and the integrity is good.
Description
Technical Field
The invention belongs to the technical field of prestressed construction of bridge construction precast beam plates, and particularly relates to a moving device for anchoring prestressed steel beams.
Background
In the prestressed structure, the pretensioned structure has simple process, good durability, no problems of stress concentration under the anchor and the like, and has incomparable superiority with a post-tensioned method; but the straight line rib arrangement mode severely limits the crossing capability and the application range. Therefore, the prestressed tendons can be arranged into a broken line form with two bent ends during construction, and a novel structure of the prestressed concrete pretensioned beam with broken line reinforcing bars is formed. Be different from ordinary sharp prestressing force pretension beam slab construction pedestal, broken line prestressing force pretension pedestal passes through the stake column type: the two ends are anchored, a reinforced concrete force transfer beam is adopted in the middle, and a steering device and a steel connector are arranged on the force transfer beam and are in steering connection, so that multi-beam synchronous tensioning is realized; a moving device for anchoring prestressed steel beams is a key component for realizing the novel structure.
At present, the broken line pretensioned beam in engineering has no referential construction experience temporarily, a pedestal for construction of the broken line pretensioned beam plate needs to be designed independently, and a distributed prestress steel beam anchoring moving device needs to adapt to prestress conversion and construction requirements, so that the requirements on strength, rigidity and stability are met; the walking rollers are fixed on the base in a welding mode and the like, so that the distance between the walking rollers is fixed and unchanged, and when the distance between the sliding rails is changed or the walking rollers are abraded after long-time work, a large space gap exists between the walking rollers and the sliding rails, and the walking rollers cannot play a role of limiting sliding, so that the walking rollers need to be welded and replaced again, and the walking rollers of the traditional anchoring trolley are low in applicability; the steel box body is installed on the base through fastening bolts, and the bolts are rusted due to the fixed installation mode, so that the anchoring trolley is inconvenient to detach and install and is not convenient to carry.
Disclosure of Invention
The invention aims to solve the problem that the prior broken line pretensioned beam in the engineering has no referential construction experience temporarily, a pedestal for construction of the broken line pretensioned beam plate needs to be designed independently, and a distributed prestress steel beam anchoring mobile device needs to adapt to prestress conversion and construction requirements, thereby meeting the requirements on strength, rigidity and stability; the walking rollers are fixed on the base in a welding mode and the like, so that the distance between the walking rollers is fixed and unchanged, and when the distance between the sliding rails is changed or the walking rollers are abraded after long-time work, a large space gap exists between the walking rollers and the sliding rails, and the walking rollers cannot play a role of limiting sliding, so that the walking rollers need to be welded and replaced again, and the walking rollers of the traditional anchoring trolley are low in applicability; the steel box body is installed on the base through fastening bolts, and the bolts are rusted due to the fixed installation mode, so that the anchoring trolley is inconvenient to carry due to inconvenient disassembly and installation, and the moving device for anchoring the prestressed steel beams is provided.
The purpose of the invention can be realized by the following technical scheme:
a moving device for anchoring prestressed steel beams comprises a pedestal concrete foundation, a sliding rail, an anchoring trolley, a pull rod hole, a steel strand hole, an installation mechanism and an adjusting mechanism;
the top surface of the pedestal concrete foundation is provided with a slide rail, the slide rail is provided with an anchoring trolley, and the anchoring trolley comprises a base, a walking roller and a steel box body; the bottom of the base is connected with a walking roller through an adjusting mechanism, the top of the base is connected with a steel box body through an installing mechanism, and the steel box body is respectively provided with a pull rod hole and a steel strand hole;
the adjusting mechanism comprises a first fixing block, a fastening bolt, a first connecting plate, a fixing sleeve, a driving motor, a screw, a connecting rod, a threaded sleeve, a second connecting plate, a mounting plate, a sliding rod, a sleeve and a mounting seat;
the both sides of connecting rod are rotated respectively and are installed the screw rod, the one end that the connecting rod was kept away from to the screw rod is rotated the cover and is equipped with fixed cover, fixed cover is connected with the bottom of first connecting plate, the one end that the connecting rod was kept away from to the screw rod is connected with driving motor's output, driving motor installs on fixed sheathe in, threaded sleeve establishes on the screw rod, be provided with the second connecting plate on fixed cover and the threaded sleeve respectively, the bottom of second connecting plate is provided with the mounting panel, be provided with the mount pad on the mounting panel with threaded sleeve connected, the mounting panel cover that is connected with fixed cover is equipped with the sleeve pipe, the mounting panel that is connected with threaded sleeve is connected with the one end of slide bar, the other end of slide bar extends to the sleeve pipe, and with sheathed tube inner chamber sliding connection.
Preferably, the inside top surface of base is provided with first fixed block, and first fixed block symmetry is provided with two sets ofly, is provided with the jack with first connecting plate looks adaptation in the first fixed block of every group.
Preferably, the two sides of the first fixing block are respectively horizontally provided with a first bolt hole, the top of the first connecting plate is provided with a second bolt hole, and the fastening bolts sequentially penetrate through the first bolt holes and the second bolt holes and are both in threaded connection with the first fixing block and the first connecting plate.
Preferably, the mounting mechanism is disposed on the top surface of the base and symmetrically disposed along the base.
Preferably, the mounting mechanism comprises a first plate body, a second plate body, a third plate body, a fixed rod, a fixed block, a hydraulic cylinder, a connecting block, a first movable plate, a second movable plate and a third movable plate; the first plate body, the second plate body and the third plate body are arranged side by side, the first plate body is installed on the top surface of the base, the second plate body is located right above the first plate body, the third plate body is located right above the second plate body, the fixing rods are arranged in parallel and are two sets, the bottom end of each fixing rod is connected with the first plate body, the top end of each fixing rod is connected with the third plate body, and the two ends of the second plate body are sleeved on the fixing rods and are in sliding connection with the fixing rods.
Preferably, a hydraulic cylinder is arranged on the top surface of the third plate body, the output end of the hydraulic cylinder penetrates through the third plate body and is connected with the connecting block, two sides of the connecting block are respectively movably connected with one end of the first movable plate, the other end of the first movable plate is respectively movably connected with one end of the second movable plate and one end of the third movable plate, the other end of the second movable plate is movably connected with the bottom surface of the third plate body, and the other end of the third movable plate is movably connected with the top surface of the second plate body.
Preferably, the bottom surface of the second plate body is provided with a second fixed block, the two sides of the steel box body are provided with connecting lugs, and the connecting lugs are provided with fixing holes matched with the second fixed block.
Preferably, the use method of the mobile device for anchoring prestressed steel strands comprises the following steps:
the first step is as follows: the screw rod is driven to rotate by controlling the driving motor to work, so that the threaded sleeve horizontally moves along the screw rod, the threaded sleeve drives the mounting seat to horizontally move through the second connecting plate and the mounting plate, the distance between the two groups of walking rollers is adjusted, and the mounting seat is suitable for sliding rails with different widths; the adjusting mechanism is provided with a first fixing block, a fastening bolt and a first connecting plate, so that the first connecting plate is inserted into the first fixing block and then is fixed by the fastening bolt, the mounting work of the adjusting mechanism can be realized, and meanwhile, the adjusting mechanism is convenient to dismount; the problem that in the prior art, the walking rollers are fixed on the base in a welding mode and the like, so that the distance between the walking rollers is fixed and unchanged, and therefore when the distance between the sliding rails is changed or the walking rollers are abraded after long-time work, a large space gap exists between the walking rollers and the sliding rails, the effect of limiting sliding cannot be achieved, the walking rollers need to be welded and replaced again, and the applicability of the walking rollers of the traditional anchoring trolley is low is solved;
the second step is that: then, the walking rollers of the anchoring trolley are arranged on the sliding rails on the top surface of the pedestal concrete foundation, the hydraulic cylinder is controlled to work to drive the connecting block to move downwards, and then the second plate body is driven to move downwards along the fixed rod through the connecting action of the first movable plate, the second movable plate and the third movable plate, so that the fixed block moves into the fixed holes in the connecting lugs, and the installation and fixation work of the steel box body is completed; then, the walking rollers are enabled to walk in a limiting mode at the sliding rails, the anchoring trolley is driven to move back and forth to adapt to the change of displacement when the prestressed steel strand bundle of the pretensioned beam plate is integrally tensioned and released, the anchoring trolley is connected with the anchoring end through a pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes; the mounting mechanism can mount the steel box body only by controlling the extension work of the output shaft of the hydraulic cylinder, and then controls the contraction work of the output shaft of the hydraulic cylinder to dismount the steel box body, so that the problem that the anchor trolley is inconvenient to carry due to the fact that bolts are rusted and inconvenient to dismount and mount due to the fact that the steel box body is mounted on the base through fastening bolts in the prior art is solved.
Compared with the prior art, the invention has the beneficial effects that: the screw rod is driven to rotate by controlling the driving motor to work, so that the threaded sleeve horizontally moves along the screw rod, the threaded sleeve drives the mounting seat to horizontally move through the second connecting plate and the mounting plate, the distance between the two groups of walking rollers is adjusted, and the mounting seat is suitable for sliding rails with different widths; the adjusting mechanism is provided with a first fixing block, a fastening bolt and a first connecting plate, so that the first connecting plate is inserted into the first fixing block and then is fixed by the fastening bolt, the mounting work of the adjusting mechanism can be realized, and meanwhile, the adjusting mechanism is convenient to dismount; the problem that in the prior art, the walking rollers are fixed on the base in a welding mode and the like, so that the distance between the walking rollers is fixed and unchanged, and therefore when the distance between the sliding rails is changed or the walking rollers are abraded after long-time work, a large space gap exists between the walking rollers and the sliding rails, the effect of limiting sliding cannot be achieved, the walking rollers need to be welded and replaced again, and the applicability of the walking rollers of the traditional anchoring trolley is low is solved;
then, the walking rollers of the anchoring trolley are arranged on the sliding rails on the top surface of the pedestal concrete foundation, the hydraulic cylinder is controlled to work to drive the connecting block to move downwards, and then the second plate body is driven to move downwards along the fixed rod through the connecting action of the first movable plate, the second movable plate and the third movable plate, so that the fixed block moves into the fixed holes in the connecting lugs, and the installation and fixation work of the steel box body is completed; then, the walking rollers are enabled to walk in a limiting mode at the sliding rails, the anchoring trolley is driven to move back and forth to adapt to the change of displacement when the prestressed steel strand bundle of the pretensioned beam plate is integrally tensioned and released, the anchoring trolley is connected with the anchoring end through a pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes; the invention provides a moving device for anchoring a prestressed steel beam, which is a device for providing convertible operation for tensioning a broken line beam of a pre-tensioned precast beam plate; the anchoring trolley bears the steel stranded wires outside the fixed beam body, comprises a linear bundle and a broken-line bundle, is connected and converted to the fixed end through a pull rod and is used as a conversion device for carrying out prestressed tensioning and releasing operations on the beam plate; the anchoring trolley performs displacement adjustment self-adaption through a lower roller along with the change of the stress and the elongation of the steel strand in the tensioning process; the anchoring trolley travels on the sliding track and is provided with a traveling roller, a steel box body, a pull rod hole and a steel strand hole from bottom to top; concrete is filled in the steel box body to participate in stress together; the anchoring trolley is arranged according to the difference of the number and the height of the steel strands of different beam plates, so that the prestress construction requirements of different design span beam plates can be met; the anchoring trolley realizes the anchoring of the prestressed broken beam and the linear beam on the same section, and is convenient for the prestressed anchoring of the pre-tensioned precast beam plate; the integral tensioning and releasing of the pre-tensioned beam plate prestress broken wire harness and the linear harness are facilitated; the design is simple, the rigidity is high, the deformation is small, and the integrity is good;
the mounting mechanism can mount the steel box body only by controlling the extension work of the output shaft of the hydraulic cylinder, and then controls the contraction work of the output shaft of the hydraulic cylinder to dismount the steel box body, so that the problem that the anchor trolley is inconvenient to carry due to the fact that bolts are rusted and inconvenient to dismount and mount due to the fact that the steel box body is mounted on the base through fastening bolts in the prior art is solved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the connection relationship between the anchoring trolley and the slide rail in the present invention.
FIG. 2 is a side view of the connection of the anchoring trolley to the skid rails of the present invention.
FIG. 3 is a schematic structural diagram of the connection relationship between the base and the adjusting mechanism according to the present invention.
Fig. 4 is a schematic perspective view of an adjusting mechanism according to the present invention.
FIG. 5 is a perspective view of the mounting mechanism of the present invention.
In the figure: 1. pedestal concrete foundations; 2. a slide rail; 3. a base; 4. a walking roller; 5. a steel box body; 6. a draw bar hole; 7. a steel strand hole; 8. an installation mechanism; 9. an adjustment mechanism; 10. a first fixed block; 11. fastening a bolt; 12. a first connecting plate; 13. fixing a sleeve; 14. a drive motor; 15. a screw; 16. a connecting rod; 17. a threaded bushing; 18. a second connecting plate; 19. mounting a plate; 20. a slide bar; 21. a sleeve; 22. a mounting seat; 23. a first plate body; 24. a second plate body; 25. a third plate body; 26. fixing the rod; 27. a second fixed block; 28. a hydraulic cylinder; 29. connecting blocks; 30. a first movable plate; 31. a second movable plate; 32. a third movable plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a moving device for anchoring prestressed steel strands includes a concrete foundation 1, a slide rail 2, an anchoring trolley, a pull rod hole 6, a steel strand hole 7, an installation mechanism 8, and an adjustment mechanism 9;
a slide rail 2 is arranged on the top surface of the pedestal concrete foundation 1, and an anchoring trolley is arranged on the slide rail 2 and comprises a base 3, a walking roller 4 and a steel box body 5; the bottom of the base 3 is connected with a walking roller 4 through an adjusting mechanism 9, the top of the base 3 is connected with a steel box body 5 through an installing mechanism 8, and the steel box body 5 is respectively provided with a pull rod hole 6 and a steel strand hole 7; the walking roller 4 walks in a limiting way at the sliding rail 2 to drive the anchoring trolley to move back and forth to respectively adapt to the displacement change of the prestressed steel strand bundle of the pretensioned beam plate during integral tensioning and releasing, the anchoring trolley is connected with the anchoring end through a pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes; the steel box body 5 is used for fixing the beam body external folding wire bundle and the linear bundle steel strand, providing a working platform for single bundle tensioning steel strand and bearing larger horizontal load and bending moment; the pull rod hole 6 provides a channel for a connecting device for connecting the anchoring trolley and the anchoring end, and meets the requirement of accurate hole opening positions of the pull rod for providing horizontal force and resisting the overturning bending moment of the anchoring trolley according to the stability requirement; the pull rod hole 6 adopts a steel sleeve with a corresponding diameter, so that the excessive friction loss between the pull rod and the hole wall is avoided, and the pull rod is made of a material with a small friction coefficient; the steel strand hole 7 is an anchoring channel for fixing the steel strand outside the beam body, and is accurately arranged according to the height and the horizontal position of the steel strand, so that the excessive friction loss between the steel strand and the hole wall is avoided, and the steel strand hole is made of a material with a small friction coefficient; the single-hole anchor is an anchoring device for fixing the steel strand outside the beam body on one side of the anchoring trolley, and the folded wire harness and the linear bundle steel strand are restrained and fixed;
the adjusting mechanism 9 comprises a first fixing block 10, a fastening bolt 11, a first connecting plate 12, a fixing sleeve 13, a driving motor 14, a screw 15, a connecting rod 16, a threaded sleeve 17, a second connecting plate 18, a mounting plate 19, a sliding rod 20, a sleeve 21 and a mounting seat 22;
the two sides of the connecting rod 16 are respectively rotatably provided with a screw rod 15, one end of the screw rod 15, far away from the connecting rod 16, is rotatably sleeved with a fixed sleeve 13, the fixed sleeve 13 is connected with the bottom end of the first connecting plate 12, one end of the screw rod 15, far away from the connecting rod 16, is connected with the output end of the driving motor 14, the driving motor 14 is installed on the fixed sleeve 13, the threaded sleeve 17 is sleeved on the screw rod 15, the fixed sleeve 13 and the threaded sleeve 17 are respectively provided with a second connecting plate 18, the bottom end of the second connecting plate 18 is provided with a mounting plate 19, the mounting plate 19 connected with the threaded sleeve 17 is provided with a mounting seat 22, the mounting plate 19 connected with the fixed sleeve 13 is sleeved with a sleeve 21, the mounting plate 19 connected with the threaded sleeve 17 is connected with one end of a sliding rod 20, and the other end of the sliding rod 20 extends to the sleeve 21 and is connected with an inner cavity of the sleeve 21 in a sliding manner.
The inside top surface of base 3 is provided with first fixed block 10, and first fixed block 10 symmetry is provided with two sets ofly, is provided with the jack with first connecting plate 12 looks adaptation in every first fixed block of group 10.
The both sides of first fixed block 10 are the level respectively and are provided with first bolt hole, and the top of first connecting plate 12 is provided with the second bolt hole, and fastening bolt 11 passes first bolt hole and second bolt hole in proper order to all with first fixed block 10 and first connecting plate 12 threaded connection.
The mounting means 8 are arranged on the top surface of the base 3 and symmetrically along the base 3.
The mounting mechanism 8 comprises a first plate 23, a second plate 24, a third plate 25, a fixed rod 26, a second fixed block 27, a hydraulic cylinder 28, a connecting block 29, a first movable plate 30, a second movable plate 31 and a third movable plate 32; first plate body 23, second plate body 24 and third plate body 25 set up side by side, first plate body 23 is installed on base 3's top surface, second plate body 24 is located first plate body 23 directly over, third plate body 25 is located second plate body 24 directly over, dead lever 26 parallel arrangement has two sets ofly, the bottom and the first plate body 23 of dead lever 26 are connected, the top and the third plate body 25 of dead lever 26 are connected, the both ends cover of second plate body 24 is established on dead lever 26, and with dead lever 26 sliding connection.
A hydraulic cylinder 28 is arranged on the top surface of the third plate 25, the output end of the hydraulic cylinder 28 passes through the third plate 25 and is connected with a connecting block 29, two sides of the connecting block 29 are respectively movably connected with one end of a first movable plate 30, the other end of the first movable plate 30 is respectively movably connected with one end of a second movable plate 31 and one end of a third movable plate 32, the other end of the second movable plate 31 is movably connected with the bottom surface of the third plate 25, and the other end of the third movable plate 32 is movably connected with the top surface of the second plate 24.
The bottom surface of the second plate body 24 is provided with a second fixing block 27, the two sides of the steel box body 5 are provided with connecting lugs, and the connecting lugs are provided with fixing holes matched with the second fixing block 27.
The use method of the mobile device for anchoring the prestressed steel strands comprises the following steps:
the first step is as follows: the screw rod 15 is driven to rotate by controlling the driving motor 14 to work, so that the threaded sleeve 17 horizontally moves along the screw rod 15, the threaded sleeve 17 drives the mounting seat 22 to horizontally move through the second connecting plate 18 and the mounting plate 19, the distance between the two groups of walking rollers 4 is adjusted, the device is suitable for sliding rails 2 with different widths, and when the mounting seat 22 horizontally moves, the sliding rod 20 horizontally moves along the sleeve 21 to limit the movement of the mounting seat 22; the adjusting mechanism 9 is provided with a first fixing block 10, a fastening bolt 11 and a first connecting plate 12, so that the first connecting plate 12 is inserted into the first fixing block 10 and then is fixed by the fastening bolt 11, the mounting work of the adjusting mechanism 9 can be realized, and meanwhile, the dismounting is convenient; the problem that in the prior art, the walking rollers 4 are fixed on the base 3 in a welding mode and the like, so that the distance between the walking rollers 4 is fixed and unchanged, and therefore when the distance between the sliding rails 2 is changed or the walking rollers 4 are abraded after long-time working, a large space gap exists between the walking rollers 4 and the sliding rails 2, the limiting sliding effect cannot be achieved, the walking rollers 4 need to be welded and replaced again, and the walking rollers 4 of the traditional anchoring trolley are low in applicability is solved;
the second step is that: then, the walking rollers 4 of the anchoring trolley are placed on the sliding rails 2 on the top surface of the pedestal concrete foundation 1, the hydraulic cylinder 28 is controlled to work, the connecting block 29 is driven to move downwards, and then the second plate body 24 is driven to move downwards along the fixing rods 26 under the connecting action of the first movable plate 30, the second movable plate 31 and the third movable plate 32, so that the second fixing block 27 moves into the fixing holes in the connecting lugs, and the installation and fixing work of the steel box body 5 is completed; then, the walking rollers 4 are enabled to walk in a limiting mode at the sliding rails 2, the anchoring trolley is driven to move back and forth to respectively adapt to the displacement change of the prestressed steel strand bundle of the pretensioned beam plate during integral tensioning and releasing, the anchoring trolley is connected with the anchoring end through a pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes; the mounting mechanism 8 can mount the steel box body 5, is away from the steel box body 5 in the same way only by controlling the extension work of the output shaft of the hydraulic cylinder 28, and controls the contraction work of the output shaft of the hydraulic cylinder 28 to dismount the steel box body 5, so that the problem that the anchor trolley is inconvenient to carry due to the fact that the bolts are rusted and inconvenient to dismount and mount in the fixed mounting mode in the prior art because the steel box body 5 is mounted on the base 3 through the fastening bolts 11 is solved.
The working principle of the invention is as follows: the screw rod 15 is driven to rotate by controlling the driving motor 14 to work, so that the threaded sleeve 17 horizontally moves along the screw rod 15, the threaded sleeve 17 drives the mounting seat 22 to horizontally move through the second connecting plate 18 and the mounting plate 19, the distance between the two groups of walking rollers 4 is adjusted, the device is suitable for sliding rails 2 with different widths, and when the mounting seat 22 horizontally moves, the sliding rod 20 horizontally moves along the sleeve 21 to limit the movement of the mounting seat 22; the adjusting mechanism 9 is provided with a first fixing block 10, a fastening bolt 11 and a first connecting plate 12, so that the first connecting plate 12 is inserted into the first fixing block 10 and then is fixed by the fastening bolt 11, the mounting work of the adjusting mechanism 9 can be realized, and meanwhile, the dismounting is convenient; the problem that in the prior art, the walking rollers 4 are fixed on the base 3 in a welding mode and the like, so that the distance between the walking rollers 4 is fixed and unchanged, and therefore when the distance between the sliding rails 2 is changed or the walking rollers 4 are abraded after long-time working, a large space gap exists between the walking rollers 4 and the sliding rails 2, the limiting sliding effect cannot be achieved, the walking rollers 4 need to be welded and replaced again, and the walking rollers 4 of the traditional anchoring trolley are low in applicability is solved;
then, the walking rollers 4 of the anchoring trolley are placed on the sliding rails 2 on the top surface of the pedestal concrete foundation 1, the hydraulic cylinder 28 is controlled to work, the connecting block 29 is driven to move downwards, and then the second plate body 24 is driven to move downwards along the fixing rods 26 under the connecting action of the first movable plate 30, the second movable plate 31 and the third movable plate 32, so that the second fixing block 27 moves into the fixing holes in the connecting lugs, and the installation and fixing work of the steel box body 5 is completed; then, the walking rollers 4 are enabled to walk in a limiting mode at the sliding rails 2, the anchoring trolley is driven to move back and forth to respectively adapt to the displacement change of the prestressed steel strand bundle of the pretensioned beam plate during integral tensioning and releasing, the anchoring trolley is connected with the anchoring end through a pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes; the invention provides a moving device for anchoring a prestressed steel beam, which is a device for providing convertible operation for tensioning a broken line beam of a pre-tensioned precast beam plate; the anchoring trolley bears the steel stranded wires outside the fixed beam body, comprises a linear bundle and a broken-line bundle, is connected and converted to the fixed end through a pull rod and is used as a conversion device for carrying out prestressed tensioning and releasing operations on the beam plate; the anchoring trolley performs displacement adjustment self-adaption through a lower roller along with the change of the stress and the elongation of the steel strand in the tensioning process; the anchoring trolley travels on the sliding track and is provided with a traveling roller, a steel box body, a pull rod hole and a steel strand hole from bottom to top; concrete is filled in the steel box body to participate in stress together; the anchoring trolley is arranged according to the difference of the number and the height of the steel strands of different beam plates, so that the prestress construction requirements of different design span beam plates can be met; the anchoring trolley realizes the anchoring of the prestressed broken beam and the linear beam on the same section, and is convenient for the prestressed anchoring of the pre-tensioned precast beam plate; the integral tensioning and releasing of the pre-tensioned beam plate prestress broken wire harness and the linear harness are facilitated; the design is simple, the rigidity is high, the deformation is small, and the integrity is good;
the mounting mechanism 8 can mount the steel box body 5, is away from the steel box body 5 in the same way only by controlling the extension work of the output shaft of the hydraulic cylinder 28, and controls the contraction work of the output shaft of the hydraulic cylinder 28 to dismount the steel box body 5, so that the problem that the anchor trolley is inconvenient to carry due to the fact that the bolts are rusted and inconvenient to dismount and mount in the fixed mounting mode in the prior art because the steel box body 5 is mounted on the base 3 through the fastening bolts 11 is solved.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. A mobile device for anchoring prestressed steel beams is characterized in that: the device comprises a pedestal concrete foundation (1), a sliding rail (2), an anchoring trolley, a pull rod hole (6), a steel strand hole (7), an installation mechanism (8) and an adjusting mechanism (9);
a sliding rail (2) is arranged on the top surface of the pedestal concrete foundation (1), an anchoring trolley is arranged on the sliding rail (2), and the anchoring trolley comprises a base (3), a walking roller (4) and a steel box body (5); the bottom of the base (3) is connected with a traveling roller (4) through an adjusting mechanism (9), the top of the base (3) is connected with a steel box body (5) through an installing mechanism (8), and the steel box body (5) is respectively provided with a pull rod hole (6) and a steel strand hole (7);
the adjusting mechanism (9) comprises a first fixing block (10), a fastening bolt (11), a first connecting plate (12), a fixing sleeve (13), a driving motor (14), a screw (15), a connecting rod (16), a threaded sleeve (17), a second connecting plate (18), a mounting plate (19), a sliding rod (20), a sleeve (21) and a mounting seat (22);
two sides of a connecting rod (16) are respectively rotatably provided with a screw rod (15), one end of the screw rod (15) far away from the connecting rod (16) is rotatably sleeved with a fixed sleeve (13), the fixed sleeve (13) is connected with the bottom end of a first connecting plate (12), one end of the screw rod (15) far away from the connecting rod (16) is connected with the output end of a driving motor (14), the driving motor (14) is arranged on the fixed sleeve (13), a threaded sleeve (17) is sleeved on the screw rod (15), the fixed sleeve (13) and the threaded sleeve (17) are respectively provided with a second connecting plate (18), the bottom end of the second connecting plate (18) is provided with a mounting plate (19), the mounting plate (19) connected with the threaded sleeve (17) is provided with a mounting seat (22), the mounting plate (19) connected with the fixed sleeve (13) is sleeved with a sleeve (21), the mounting plate (19) connected with the threaded sleeve (17) is connected with one end of a sliding rod (20), the other end of the sliding rod (20) extends to the sleeve (21) and is connected with the inner cavity of the sleeve (21) in a sliding way;
the top surface of the interior of the base (3) is provided with first fixed blocks (10), the first fixed blocks (10) are symmetrically provided with two groups, and each group of first fixed blocks (10) is internally provided with jacks matched with the first connecting plate (12);
the two sides of the first fixing block (10) are respectively and horizontally provided with a first bolt hole, the top of the first connecting plate (12) is provided with a second bolt hole, and the fastening bolts (11) sequentially penetrate through the first bolt holes and the second bolt holes and are all in threaded connection with the first fixing block (10) and the first connecting plate (12).
2. A displacement device for anchorage of prestressed steel cables, as in claim 1, characterized by the fact that the mounting means (8) are provided on the top surface of the base (3) and symmetrically along the base (3).
3. The moving device for prestressed steel strand anchoring of claim 2, wherein the mounting mechanism (8) comprises a first plate (23), a second plate (24), a third plate (25), a fixing rod (26), a second fixing block (27), a hydraulic cylinder (28), a connecting block (29), a first movable plate (30), a second movable plate (31), and a third movable plate (32); the fixing device comprises a first plate body (23), a second plate body (24) and a third plate body (25) which are arranged side by side, wherein the first plate body (23) is installed on the top surface of a base (3), the second plate body (24) is located right above the first plate body (23), the third plate body (25) is located right above the second plate body (24), two groups of fixing rods (26) are arranged in parallel, the bottom ends of the fixing rods (26) are connected with the first plate body (23), the top ends of the fixing rods (26) are connected with the third plate body (25), and the two ends of the second plate body (24) are sleeved on the fixing rods (26) and are in sliding connection with the fixing rods (26);
a hydraulic cylinder (28) is arranged on the top surface of the third plate body (25), the output end of the hydraulic cylinder (28) penetrates through the third plate body (25) and is connected with a connecting block (29), two sides of the connecting block (29) are respectively movably connected with one end of a first movable plate (30), the other end of the first movable plate (30) is respectively movably connected with one end of a second movable plate (31) and one end of a third movable plate (32), the other end of the second movable plate (31) is movably connected with the bottom surface of the third plate body (25), and the other end of the third movable plate (32) is movably connected with the top surface of the second plate body (24);
the bottom surface of the second plate body (24) is provided with a second fixing block (27), the two sides of the steel box body (5) are provided with connecting lugs, and fixing holes matched with the second fixing block (27) are formed in the connecting lugs.
4. The moving device for prestressed steel strand anchoring of claim 3, wherein the method for using the moving device for prestressed steel strand anchoring comprises the following steps:
the first step is as follows: the screw rod (15) is driven to rotate by controlling the driving motor (14) to work, so that the threaded sleeve (17) horizontally moves along the screw rod (15), the threaded sleeve (17) drives the mounting seat (22) to horizontally move through the second connecting plate (18) and the mounting plate (19), the distance between the two groups of walking rollers (4) is adjusted, the device is suitable for sliding rails (2) with different widths, and when the mounting seat (22) horizontally moves, the sliding rod (20) horizontally moves along the sleeve (21) to limit the movement of the mounting seat (22);
the second step is that: then, the walking rollers (4) of the anchoring trolley are placed on the sliding rails (2) on the top surface of the pedestal concrete foundation (1), the hydraulic cylinder (28) is controlled to work to drive the connecting block (29) to move downwards, and then the second plate body (24) is driven to move downwards along the fixing rods (26) under the connecting action of the first movable plate (30), the second movable plate (31) and the third movable plate (32), so that the second fixing block (27) moves into the fixing holes in the connecting lugs, and the steel box body (5) is installed and fixed; then, the walking rollers (4) are enabled to walk in a limiting mode at the sliding rails (2) to drive the anchoring trolley to move back and forth to adapt to the displacement change of the prestressed steel strand bundle of the pretensioned beam plate during integral tensioning and releasing, the anchoring trolley is connected with the anchoring end through the pull rod, and horizontal force is applied to the pull rod in the tensioning and releasing processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514238.8A CN112663504B (en) | 2020-12-21 | 2020-12-21 | Moving device for anchoring prestressed steel beams |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011514238.8A CN112663504B (en) | 2020-12-21 | 2020-12-21 | Moving device for anchoring prestressed steel beams |
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| CN112663504A CN112663504A (en) | 2021-04-16 |
| CN112663504B true CN112663504B (en) | 2021-12-07 |
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| EP0685600A1 (en) * | 1994-06-01 | 1995-12-06 | Krupp Fördertechnik GmbH | Assembly method for a portable bridge and bridge obtained by such a method |
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| CN210275387U (en) * | 2019-06-05 | 2020-04-10 | 四川云农灌溉设备有限公司 | Spraying type crop irrigation equipment |
| CN210766297U (en) * | 2019-08-09 | 2020-06-16 | 安徽路达公路工程有限责任公司 | Highway engineering film paving device |
| CN211395397U (en) * | 2020-03-13 | 2020-09-01 | 云南建投第四建设有限公司 | T beam-slab shear rib positioning device |
| CN211498490U (en) * | 2019-10-15 | 2020-09-15 | 郑州华中建机设备安装有限公司 | Bridge girder erection machine pre-assembling equipment |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0685600A1 (en) * | 1994-06-01 | 1995-12-06 | Krupp Fördertechnik GmbH | Assembly method for a portable bridge and bridge obtained by such a method |
| CN109676784A (en) * | 2019-01-23 | 2019-04-26 | 四川公路桥梁建设集团有限公司 | A kind of assembled steel-concrete combined structure pedestal and pre-tensioning system T beam construction |
| CN210275387U (en) * | 2019-06-05 | 2020-04-10 | 四川云农灌溉设备有限公司 | Spraying type crop irrigation equipment |
| CN210766297U (en) * | 2019-08-09 | 2020-06-16 | 安徽路达公路工程有限责任公司 | Highway engineering film paving device |
| CN211498490U (en) * | 2019-10-15 | 2020-09-15 | 郑州华中建机设备安装有限公司 | Bridge girder erection machine pre-assembling equipment |
| CN211395397U (en) * | 2020-03-13 | 2020-09-01 | 云南建投第四建设有限公司 | T beam-slab shear rib positioning device |
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| CN112663504A (en) | 2021-04-16 |
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