CN217870000U

CN217870000U - Steel strand stretching protection device

Info

Publication number: CN217870000U
Application number: CN202221030356.6U
Authority: CN
Inventors: 王日兵; 杨杰; 岑雪雁; 王力业
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-11-22
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses when having the steel strand wires of stretch-draw angle to among the prior art stretch-draw eminence, use the hoist to hoist and mount the jack in the eminence, be difficult for and lead to the problem of disconnected muscle with steel strand wires stretch-draw angle matching, disclose a steel strand wires stretch-draw protector, relate to road bridge technical field, include: the lifting device comprises a jack, a supporting plate, a supporting rod and a lifting rod, wherein one end of the supporting rod is connected with the upper surface of the supporting plate, the other end of the supporting rod is hinged with one end of the jack, one end of the lifting rod is hinged with the upper surface of the supporting plate, the other end of the supporting rod is hinged with the other end of the supporting plate, the lifting rod is hinged with the other end of the lifting rod, the supporting rod and the lifting rod are hinged with the jack, the supporting rod and the lifting rod are located on the middle axial surface of the jack, and the axis of a hinged shaft is perpendicular to the middle axial surface of the jack. The inclined angle that uses the screw thread to lift the pole accurate regulation jack makes its and the stretch-draw angle matching of steel strand wires to set up the convenient discernment adjustment angle of weight formula angle indicator, effectively prevent to lead to the accident of steel strand wires disconnected muscle because of jack and the mismatching of steel strand wires stretch-draw angle in the actual work.

Description

Steel strand stretching protection device

Technical Field

The utility model relates to a road bridge technical field, in particular to steel strand wires stretch-draw protector.

Background

In the construction of a bridge, steel strands in a prestressed beam slab need to be tensioned, and a common tensioning tool is a jack. When a steel strand at a high place is tensioned, a lifting appliance is generally used for lifting a jack to the high place to perform tensioning work. The hoisting jack has large swing amplitude, the jack is not easy to be matched with the stretching angle of the steel strand for the steel strand with the stretching angle, and the steel strand is easy to break in the stretching process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a when there is the steel strand wires of stretch-draw angle to stretch-draw eminence among the prior art, use the hoist to hoist and mount the jack in the eminence, be difficult for and lead to the problem of disconnected muscle with steel strand wires stretch-draw angle matching, provide a steel strand wires stretch-draw protector.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a steel strand tensioning guard comprising: jack, backup pad, one end with the backup pad upper surface connection other end with jack one end articulated bracing piece and one end with the backup pad upper surface articulated other end with the articulated pole that lifts of jack other end, the bracing piece reaches the pole that lifts with jack articulated position is in on the jack median axial plane, and articulated shaft axis perpendicular to axial plane wherein.

By adopting the technical scheme, the lifting rod stretches and retracts to drive the jack to rotate around the hinged shaft hinged with the supporting rod, the inclination angle of the axis of the jack is adjusted to be matched with the stretching angle of the steel strand, and the steel strand is prevented from breaking.

Preferably, the lifting rod comprises a lifting seat connected with the supporting plate, a connecting rod hinged with the lifting seat, a threaded rod hinged with the jack, and a sleeve, wherein one end of the sleeve is connected with the threaded rod in a threaded manner, the other end of the sleeve is connected with the connecting rod in a rotating manner, and the sleeve rotates relative to the connecting rod around the axis of the sleeve.

By adopting the technical scheme, the sleeve rotates relative to the connecting rod and moves relative to the threaded rod along the threads, so that the lifting function is realized. And the screw structure is adopted, so that the adjusting precision is higher.

Preferably, the jack is connected with an angle indicating plate parallel to the axis of the jack, the indicating plate is hinged with a heavy hammer pointer, and when the axis of the jack is horizontal, the pointer is aligned with the zero scale on the indicating plate.

By adopting the technical scheme, the indicating disc parallel to the axis of the jack rotates along with the jack, the pointer of the heavy punch is always kept vertical under the action of gravity, and the included angle between the pointer and the indicating disc is the inclination angle between the axis of the jack and the vertical direction. The device is simple in structure and can accurately adjust the inclination angle of the jack.

Preferably, telescopic supporting legs are arranged below the supporting plate, and a plurality of supporting legs are uniformly distributed around the supporting plate.

Adopt above-mentioned technical scheme, the telescopic support leg of adjustment backup pad below can adjust the jack to the working height bracing piece and lift the pole and needn't do very high, and during the initial time, with the supporting leg shrink to convenient operating height, according to the steel strand wires stretch-draw angular adjustment jack inclination of design, extend the supporting leg to working height after adjusting. For high-altitude tensioning operation, the inclination angle of the jack can be conveniently adjusted and checked by an operator. Set up a plurality of evenly distributed at backup pad supporting leg all around, can reduce supporting leg cross sectional dimension on the basis of guaranteeing stable support, reduce structure weight.

Preferably, steel strand wires stretch-draw protector still includes the slide rail, slide rail track direction with the jack axis is parallel, the jack bottom is equipped with the edge the gliding slider of slide rail, the bracing piece with the pole of lifting articulates on the slide rail, be connected with on the jack and pull the subassembly, it restricts to pull the subassembly the jack is relative the displacement of slide rail.

By adopting the technical scheme, when the steel strand is tensioned, one end of the steel strand needs to penetrate through the jack, the jack with the inclination angle adjusted by the supporting leg is conveyed to one end of the steel strand, the traction assembly enables the jack to slide relative to the sliding rail, one end of the steel strand freely penetrates through the jack, and the tensioning angle of the steel strand is ensured.

Preferably, the traction assembly comprises a lifting rope connected with the jack at one end, a supporting shaft supported on the supporting plate and capable of rotating around the axis of the supporting shaft, a roller supported on the lower portion of the supporting leg and capable of rotating around the axis of the roller, and a rocker with one end centered on the axis of the roller, wherein the other end of the lifting rope is fixed and wound on the roller, and the middle portion of the lifting rope is supported on the supporting shaft.

By adopting the technical scheme, in the initial state, the roller controls the lifting rope to limit the lifting rope to move, when the lifting rope is aligned with the steel strand, the rocker is rotated to extend the lifting rope, the lifting rope is driven to move to the working surface relative to the sliding rail, the rocker is fixed, the lifting rope stops extending, and the lifting rope stops moving. The roller lifting rope has simple structure, and the rocker at the lower part of the supporting leg is convenient to operate.

Preferably, the lifting ropes, the supporting shaft and the rollers are provided with two groups, one ends of the two lifting ropes are respectively connected to the periphery of the jack and are axially symmetrical, the axes of the two rollers are aligned, and the rocker drives the two rollers to rotate simultaneously.

By adopting the technical scheme, the lifting rope is fixed on the periphery of the jack, the interference with the steel strand penetrating through the jack can be avoided, the relative axis is symmetrically fixed, the jack is uniformly stressed, the lifting rope stably pulls the jack, and the jack is ensured to slide along the slide rail aligned with the axis. The two groups of rollers and the supporting shaft ensure that the lifting ropes do not knot in the stretching process, and the rocker drives the two rollers to rotate simultaneously to ensure that the two lifting ropes stretch synchronously.

The utility model discloses following beneficial effect has: the inclined angle that uses the screw thread to lift the pole accurate regulation jack makes its and the stretch-draw angle matching of steel strand wires to set up the convenient discernment adjustment angle of weight formula angle indicator, effectively prevent the accident that actual work leads to the broken muscle of steel strand wires because of jack and the mismatching of steel strand wires stretch-draw angle. Adopt telescopic support leg, make the jack be suitable for in different work heights, it is higher to compare in the hoist device factor of safety of commonly used. The roller lifting rope assembly is used for controlling the jack to move along the inclined direction, so that the steel strand can conveniently pass through the jack, and the tensioning angle of the steel strand is not damaged. The device has simple structure and convenient operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the inclination of the jack of the present invention;

fig. 3 is a schematic view of the lifting rod structure of the present invention.

Reference number description, 1, jack; 101. a slider; 2. a slide rail; 3. a support bar; 4. a lifting rod; 41. a lifting seat; 42. a connecting rod; 43. a threaded rod; 44. a sleeve; 5. a support plate; 6. supporting legs; 7. an indicator panel; 8. a pointer; 9. a lifting rope; 10. a support shaft; 11. a roller; 12. a rocker.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

A steel strand tensioning guard, as shown in fig. 1, comprising: jack 1, slide rail 2, bracing piece 3, lifting rod 4, backup pad 5, supporting leg 6, dial 7, pointer 8, lifting rope 9, back shaft 10, roller 11, rocker 12.

The bottom of the jack 1 is provided with a sliding block 101, the sliding block 101 slides on the sliding rail 2, the rail direction of the sliding rail 2 is parallel to the axis of the jack 1, and in this embodiment, the sliding center is located on the central axial plane of the jack 1. One end of the supporting rod 3 is vertically fixed on the upper surface of the supporting plate 5, the other end of the supporting rod is hinged on the sliding rail 1, one end of the lifting rod 4 is hinged on the upper surface of the supporting plate 5, the other end of the lifting rod is hinged on the sliding rail 1, the hinged positions of the supporting rod 3 and the lifting rod 4 on the sliding rail 2 are respectively close to one end of the jack, and the axis of the hinged shaft is perpendicular to the middle axial plane of the sliding center of the sliding block 101 on the jack 1. But supporting leg 6 is telescopic link, and its one end and 5 lower surface vertical fixings of backup pad, a plurality of supporting legs 6 evenly distributed are around backup pad 5, and in this embodiment, backup pad 5 is the square board, and supporting leg 6 is equipped with four, respectively symmetrical all around of arranging backup pad 5 in.

The indicator disk 7 may have an angle value, and is fixed on the sliding block 101, and its disk surface is parallel to the axial surface of the jack 1, and in this embodiment, it is parallel to the track direction of the sliding rail 2. Pointer 8 one end is articulated with indicating dial 7, and the other end just is equipped with the weight for the toper, and when 1 axis level of jack, zero scale on pointer 8 alignment indicating dial 7, when indicating dial 7 rotated along with jack 1, pointer 8 kept vertical under the action of gravity, and pointer 8 is the inclination of both jack 1 of the position reading that points on indicating dial 7.

The lifting rope 9 is a steel wire rope, one end of which is fixed at the center of the tail end of the jack 1, the other end of which is fixed on the roller 11 and wound on the roller 1, and the middle end of which is supported on the supporting shaft 10. The supporting shaft 10 is supported on the supporting plate 5, the roller 11 is supported on the lower part of the supporting leg 6 and can rotate around the axis of the roller, and one end of the rocker 12 is fixed on the end face of the roller 11 in a manner of being aligned with the axis of the roller.

As shown in fig. 3, the lifting rod 4 includes a lifting seat 41, a link 42, a threaded rod 43, and a sleeve 44.

The bottom of the lifting seat 41 is fixed on the upper surface of the supporting plate 5, one end of the connecting rod 42 is hinged with the top end of the lifting seat 41, one end of the threaded rod 43 is hinged with the sliding rail 2, one end of the sleeve 44 is in threaded connection with one end of the threaded rod 43 far away from the sliding rail 2, the other end of the sleeve 44 is in rotary connection with one end of the connecting rod 41 far away from the lifting seat 41, and the sleeve 44 rotates around the axis relative to the connecting rod 42.

As shown in fig. 2, the sleeve 44 rotates relative to the link 42 and the threaded rod 43, is connected to the link 42 to rotate without axial movement, is screwed to the threaded rod 43, and moves along the axis of the thread between the sleeve 44 and the threaded rod 43, and in this embodiment, when the sleeve 44 rotates clockwise, the sleeve 44 and the threaded rod 43 approach axially, the lifting rod 4 shortens, and when the sleeve 44 rotates counterclockwise, the sleeve 44 and the threaded rod 43 move away axially, and the lifting rod 4 extends.

During the use, supporting leg 6 supports subaerial, adjusts its flexible high to convenient operating position, anticlockwise rotation sleeve pipe 44, the extension of pole 4 that lifts, jack 1 and slide rail 2 rise with the pole 4 link that lifts, and the link height with bracing piece 3 is unchangeable, and jack 1 and slide rail 2 rotate around the articulated shaft articulated with bracing piece 3, and in the rotation process, threaded rod 43 and slide rail 2 hinge department and connecting rod 42 and the articulated department of lifting seat 41 rotate corresponding angle around its articulated shaft. The angle value pointed by the pointer 8 on the indicating dial 7 is read while the sleeve 44 is rotated until the inclination angle of the jack 1 is adjusted to match the steel strand tensioning angle. The height of the supporting leg 6 is adjusted to enable the tail end of the steel strand to be opposite to the end face of the jack 1, the rocker 12 is rotated to enable the lifting rope 9 to extend, the sliding block 101 on the jack 1 moves along the sliding rail 2, the steel strand penetrates through the jack 1, the jack 1 moves to a tensioning position, the rocker 12 stops rotating, and the jack 1 starts to tension the steel strand.

The device has simple structure and convenient operation. When the steel strand with a stretching angle at a high position is stretched, the jack 1 is supported by the supporting structure, and compared with the lifting by a lifting appliance, the jack 1 is more stable and has higher safety factor. The jack 1 is lifted by adopting a screw rod structure, the inclination angle of the jack is adjusted to be matched with the stretching angle of the steel strand, the adjusting precision is high, and a definite angle indicating device is arranged, so that the adjusting angle is more accurate, and the steel strand is prevented from breaking in the stretching process. The lifting rope device controls the jack 1 to move along the sliding rail 2, so that the steel strand can conveniently pass through the jack 1, the steel strand is not bent in the process, and the tensioning angle of the steel strand is ensured.

Claims

1. The utility model provides a steel strand stretching protector, includes jack (1), its characterized in that still includes: backup pad (5), one end with backup pad (5) upper surface connect the other end with jack (1) one end articulated bracing piece (3) and one end with backup pad (5) upper surface articulate the other end with jack (1) other end articulated pole (4) of lifting, bracing piece (3) reach pole (4) of lifting with jack (1) articulated position is in on the axial plane in jack (1), and articulated shaft axis perpendicular to wherein axial plane.

2. The steel strand tensioning protection device as claimed in claim 1, wherein: lift pole (4) including with lift seat (41) that backup pad (5) are connected, with lift seat (41) articulated connecting rod (42), with jack (1) articulated threaded rod (43) and one end with threaded rod (43) spiro union other end with connecting rod (42) rotate sleeve pipe (44) of connecting, sleeve pipe (44) are relative around its axis connecting rod (42) rotate.

3. The steel strand tensioning protection device as claimed in claim 1, wherein: the angle indicating plate (7) parallel to the axis of the jack (1) is connected to the jack (1), a heavy hammer pointer (8) is hinged to the indicating plate (7), and when the axis of the jack (1) is horizontal, the pointer (8) is aligned to a zero scale on the indicating plate (7).

4. The steel strand tensioning protection device as claimed in claim 1, wherein: the telescopic supporting legs (6) are arranged below the supporting plate (5), the supporting legs (6) are arranged in a plurality and are evenly distributed around the supporting plate (5).

5. The steel strand tensioning protection device as claimed in claim 4, wherein: steel strand wires stretch-draw protector still includes slide rail (2), slide rail (2) rail direction with jack (1) axis is parallel, jack (1) bottom is equipped with the edge slide rail (2) gliding slider (101), bracing piece (3) with lift pole (4) articulate on slide rail (2), be connected with on jack (1) and pull the subassembly, it restricts to pull the subassembly jack (1) is relative the displacement of slide rail (2).

6. The steel strand tensioning protection device as claimed in claim 5, wherein: the traction assembly comprises a lifting rope (9) with one end connected with the jack (1), a supporting shaft (10) supported on the supporting plate (5) and capable of rotating around the axis of the supporting shaft, a roller (11) supported on the lower portion of the supporting leg (6) and capable of rotating around the axis of the supporting leg, and a rocker (12) with one end centered on the axis of the roller (11), wherein the other end of the lifting rope (9) is fixed and wound on the roller (11), and the middle portion of the lifting rope is supported on the supporting shaft (10).

7. The steel strand tensioning protection device as claimed in claim 6, wherein: lifting rope (9), back shaft (10) and roller (11) are equipped with two sets ofly, two lifting rope (9) one end is connected respectively jack (1) week side and axial symmetry, two roller (11) axis centering, rocker (12) drive two simultaneously roller (11) rotate.