CN219748458U - Movable operation platform for prestress tensioning of precast beam - Google Patents

Abstract

The utility model discloses a movable operation platform for prestress tensioning of a precast beam, which relates to the technical field of bridge engineering construction equipment and comprises the following components: the platform frame comprises frame columns and frame beams connected between the frame columns, and is provided with a horizontal bearing platform; the base rollers are arranged at the bottom of the platform frame; the two longitudinal slideway beams are arranged on two sides of the top of the platform frame in parallel and are positioned at the top ends of the frame columns; the two ends of the transverse slideway beam are provided with first pulleys, the two first pulleys are respectively and slidably arranged on the two longitudinal slideway beams, and the transverse slideway beam is provided with a trolley which can move along the length direction of the trolley; a chain-pouring device connected below the pulley car; the utility model solves the problems that the tensioning equipment is difficult to move and adjust and the tensioning equipment is unstable in the related technology, and improves the operation normalization.

Description

Movable operation platform for prestress tensioning of precast beam

Technical Field

The utility model relates to the technical field of bridge engineering construction equipment, in particular to a movable operation platform for prestress tensioning of a precast beam.

Background

In the modern engineering construction process, the precast beam has the advantages of saving construction period due to the fact that the precast beam is provided with the upper part and the lower part, being higher in flow production precision, better in overall structural performance, capable of being manufactured in advance to meet the site construction requirements at any time, and the like, and can be widely applied to larger engineering constructions such as bridges, roads and house construction.

In the current precast beam construction process, whether the precast beam is a bridge precast beam, a road precast beam or other building precast beams, the precast beam construction involves the step of prestress tensioning, and the precast beam is effectively prestressed tensioned to generate compressive stress in a midspan direction, so that the precast beam is deformed to a certain extent and is used for coping with loads born by the structure, thereby improving the bending resistance and rigidity of the component, and delaying the occurrence of cracks and increasing the durability of the component. However, in the actual construction process, the prestress tensioning of the precast beam often has the problems that tensioning equipment is heavy, movable adjustment is difficult, the positions of the prestress tendons are different, replacement of the prestress tendons is complicated, equipment balance is difficult to keep stable, and operation is not standard.

Disclosure of Invention

The embodiment of the utility model provides a movable operation platform for prestress tensioning of a precast beam, which is used for solving the problems that tensioning equipment is difficult to move and adjust and the tensioning equipment is unstable in the related technology and improving the operation standardization.

To achieve the above object, a movable operating platform for prestress tensioning of a precast beam is adopted, comprising:

the platform frame comprises frame columns and frame beams connected between the frame columns, and is provided with a horizontal bearing platform;

the base rollers are arranged at the bottom of the platform frame;

the two longitudinal slideway beams are arranged on two sides of the top of the platform frame in parallel and are positioned at the top ends of the frame columns;

the two ends of the transverse slideway beam are provided with first pulleys, the two first pulleys are respectively and slidably arranged on the two longitudinal slideway beams, and the transverse slideway beam is provided with a trolley which can move along the length direction of the trolley;

and the chain-pouring device is connected below the pulley car.

In some embodiments, the platform frame further comprises:

the two slide cantilever arms are respectively used for bearing the longitudinal slide beams and are positioned at the top ends of the frame columns;

one end of the supporting arm is connected with a slide way cantilever arm, and the other end of the supporting arm is connected with a frame column below the slide way cantilever arm.

In some embodiments, the platform frame is a cube frame, and the back and two sides of the platform frame are also provided with protective steel plates.

In some embodiments, the two ends of the transverse slide rail beam are provided with a first braking baffle for preventing the pulley car from falling out, and the two ends of the longitudinal slide rail beam are provided with a second braking baffle for preventing the first pulley from falling out.

In some embodiments, the base rollers are universal wheels and each base roller is provided with a braking buckle.

In some embodiments, the cross section of the longitudinal slideway beam is triangular, the first pulley is connected with the tips of two identical cones, and two conical surfaces of the first pulley are matched with two inclined surfaces of the longitudinal slideway beam.

In some embodiments, the cross-section of the cross-runner beam is I-shaped, and the pulley vehicle comprises a second pulley arranged in grooves on two sides of the cross-runner beam in a rolling manner.

In some embodiments, the pulley car further comprises a car body connected with the second pulleys in the grooves on two sides, a hanging ring is arranged at the bottom of the car body, and the chain-pouring device is hung on the hanging ring of the pulley car.

In some embodiments, the chain-transfer device comprises:

the top of the lifting pulley is provided with a hook which is hung on the hanging ring;

and the chain block is hung on the lifting pulley, and one end of the chain block is used for installing tensioning equipment.

In some embodiments, the chain-transfer device is at least one set, the horizontal bearing platform is at least one layer, the horizontal bearing platform is positioned below the longitudinal slideway beam, and the longitudinal length of the horizontal bearing platform is shorter than the longitudinal slideway beam.

The technical scheme provided by the utility model has the beneficial effects that:

1. the utility model provides a portable operation platform for precast beam prestressing force stretch-draw, operation platform top is equipped with indulges the slide rail roof beam, and the cross slide way roof beam can follow indulging the slide rail roof beam back and forth movement, is equipped with the pulley car of following its left and right movement on the cross slide way roof beam, and the pulley car can be through lifting pulley and chain block reciprocates tensioning equipment, can realize stretching a prestressing tendons in limited operating space, and at precast beam end arbitrary height, arbitrary face position improves operating efficiency and normalization.

2. When the chain-pouring device is provided with two sets, the two bundles of stress tendons can be stretched symmetrically at the same time, and the two symmetrically stretched stress tendons can be of any height, but the heights of the two symmetrically stretched stress tendons are the same; asymmetric stretching is also possible. When the number of prestressed tendons to be tensioned is large, the operation platform is provided with a plurality of chain pouring devices, and simultaneously, the plurality of bundles of prestressed tendons are tensioned, so that the working efficiency is further improved.

3. The base roller is installed at the bottom of the operation platform, so that the operation platform can integrally move, the operation surface is convenient to replace, and manpower and material resources are saved. Further, the base roller can be provided with a braking buckle, and the operation platform can be fixed when the base roller reaches a required position, so that the operation platform can realize integral movement or fixed operation under the condition of not dismantling tensioning equipment, and can be dismantled and stored when not in use.

4. Through installing horizontal plummer and protection steel sheet on operation platform, further ensure the security of operating personnel and machinery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a movable operating platform for prestress tensioning of a precast beam according to the present utility model;

FIG. 2 is an enlarged view of a portion of the longitudinal and transverse runner beams of FIG. 1;

FIG. 3 is a schematic view of a base roller according to an embodiment of the present utility model;

reference numerals:

1. a base roller; 11. a brake buckle;

2. a platform frame; 21. a frame column; 22. a frame beam; 23. a slideway cantilever arm; 24. a protective steel plate; 25. a horizontal carrying platform; 26. a support arm;

3. a longitudinal slideway beam; 31. a second brake shield;

4. a cross slide rail beam; 41. a first pulley; 42. a scooter; 421. a vehicle body; 422. a second pulley; 43. a first brake shield;

5. a chain-turning device; 50. a lifting pulley; 51. chain block; 52. and tensioning equipment.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a movable operation platform for prestress tensioning of a precast beam, which can solve the problem that tensioning equipment is heavy and is difficult to move and adjust.

As shown in fig. 1, an embodiment of a movable operating platform for prestress tensioning of a precast beam is provided. The operation platform comprises: platform frame 2, base gyro wheel 1, indulge slide roof beam 3, cross slide roof beam 4, and chain hoist 5.

The platform frame 2 comprises frame columns 21 and frame beams 22 arranged between the frame columns 21, a plurality of base rollers 1 are arranged below the platform frame 2, a horizontal bearing table 25 is arranged inside the platform frame 2, and the horizontal bearing table 25 can be used for placing related operation tools and can also bear operators. The horizontal carrying platform 25 at the bottom of the movable operating platform has a recess formed in the direction of the beam end in order to coincide with the beam end of the precast beam.

Further, in order to facilitate the operation of operators at different heights, a plurality of horizontal carrying platforms 25 at different heights may be installed in the platform frame 2. When there are a plurality of horizontal bearers 25, the horizontal bearers 25 of the upper layer are shorter than the horizontal bearers of the lower layer, and the horizontal bearers 25 of the upper and lower layers are in a trapezoidal gradation form.

In some embodiments, to make the operating platform safe and smooth, the platform frame 2 is composed of frame posts 21 and frame beams 22 into a cube frame. The protection steel plates 24 are arranged on the back and at least part of the side surfaces of the platform frame 2, and the protection steel plates 24 on the back and the two sides semi-surround the horizontal bearing table 25, so that the safety of operators and operation equipment outside the protection steel plates is ensured.

As shown in fig. 3, in some embodiments, four base rollers 1 are disposed below the platform frame 2, at the bottom ends of the frame posts 21 at the four corners of the cube frame, respectively. Preferably, the base roller 1 is a universal wheel, so that the operation platform has a good steering function. The base roller 1 is provided with the brake buckle 11, and after the brake buckle 11 is pressed, the base roller 1 can be fixed without rotation, so that the whole operation platform is fixed.

Two longitudinal slideway beams 3 are arranged on two sides of the top of the platform frame 2 in parallel, and the longitudinal slideway beams 3 are positioned at the top ends of frame columns 21. The transverse slideway beam 4 is movably erected between the two longitudinal slideway beams 3 and can move back and forth. The two ends of the transverse slideway beam 4 are provided with first pulleys 41, and each first pulley 41 is slidably arranged on one longitudinal slideway beam 3 and can move back and forth along the length direction of the longitudinal slideway beam 3. The transverse slideway beam 4 is provided with a pulley car 42 which can slide along the length direction, and the pulley car 42 is connected with the chain-pouring device 5. The longitudinal slide rail beam 3 extends outwards relative to the platform frame 2, so that the rear space is larger during disassembly, and the operating equipment is easy to draw out.

Preferably, the platform frame 2 further comprises two slide cantilever arms 23 respectively arranged at the top ends of the frame columns 21, and each slide cantilever arm 23 carries one longitudinal slide beam 3, i.e. the longitudinal slide beam 3 is mounted on the slide cantilever arm 23. Further, the reliability of the longitudinal slideway beam 3 is enhanced by installing the supporting arm 26, one end of the supporting arm 26 is connected with the slideway cantilever arm 23, the other end of the supporting arm 26 is connected with the frame column 21 below the slideway cantilever arm 23, and the supporting arm 26, the slideway cantilever arm 23 and the frame column 21 form a triangle structure among the connecting points so as to increase the stability.

As shown in fig. 2, in some embodiments, the cross section of the longitudinal slideway beam 3 is triangular, the first pulley 41 has a structure that two identical cone tips are connected, and two conical surfaces of the first pulley are matched with two inclined surfaces of the longitudinal slideway beam 3, so that the longitudinal slideway beam 3 can be easily assembled and disassembled; in other embodiments, the longitudinal slide beam 3 and the first pulley 41 may be any structure that is matched to each other, for example, the longitudinal slide beam 3 has a groove, and the first pulley 41 is disposed in the groove. Further, in order to prevent the first pulley 41 from coming out from both ends of the longitudinal slide rail beam 3, both ends of the longitudinal slide rail beam 3 are respectively provided with the second stopper plates 31.

The cross section of the transverse slideway beam 4 is I-shaped, the trolley 42 is provided with two groups of second pulleys 422, and the two groups of second pulleys 422 are respectively arranged in grooves on two sides of the transverse slideway beam 4 in a rolling way. In other embodiments, the cross-slide beam 4 and the second pulley 422 may be any configuration that mates with one another. In order to prevent the pulley 42 from coming out of both ends of the cross beam 4, first stopper plates 43 for blocking the second pulleys 422 are further provided at both ends of the cross beam 4, respectively.

The pulley car 42 further comprises a car body 421 connected with the second pulleys 422 in the grooves on both sides of the cross slide beam 4. The bottom of the car body 421 is provided with a hanging ring for hanging the chain guiding and rewinding device 5. Specifically, the chain guide device 5 includes a lifting pulley 50, and a hook may be mounted on the top of the lifting pulley 50 and is hooked on the hanging ring through the hook. The chain guide 5 further comprises a chain block 51, the chain block 51 being hung around the lifting pulley 50, one end of the chain block 51 being used for mounting a tensioning device 52. By controlling the movement of the chain block 51 on the lifting pulley 50, the tensioning device 52 can be lifted up and down, and simultaneously, the transverse slideway beam 4 and the longitudinal slideway beam 3 are combined, so that the tensioning device 52 can be adjusted in the front and back, left and right and up and down directions in space.

Furthermore, the chain guiding and rewinding device 5 can be installed in one set, and multiple sets can be installed when the workload is large, so that the working efficiency is improved. For example, the two sets of the chain guiding and rewinding devices 5 can be used for symmetrically stretching two bundles of the tendons at any height position in a limited operation space through two stretching devices 52, and the two bundles of the tendons stretched at the same time are positioned at the same height, or can be stretched asymmetrically.

When the base roller 1 is particularly used, the operation platform and the tensioning equipment 52 are pushed to the beam end to be tensioned, and the base roller 1 is further fixed through the fixed brake buckle 11. Then, the position in the front-rear direction is adjusted by adjusting the movement of the transverse slideway beam 4 on the longitudinal slideway beam 3; and the position of the pulley 42 in the left-right direction is adjusted by moving the pulley on the transverse runner beam 4, and the tensioning device 52 is moved up and down by combining the chain pouring device 5, so that the stress tendons accurately penetrate into the tensioning device 52. In this embodiment, two tensioning devices 52 are provided, so that two bundles of symmetrical stress tendons can be tensioned at the same time, and after tensioning is completed, the tensioning devices 52 can be easily taken out only by moving the transverse slideway beam 4, and the next pair of stress tendons can be tensioned, so that the operability and stability of prestress tensioning of the precast beam are greatly improved, the working efficiency is further improved, and meanwhile, the safety of operators is ensured.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A movable operating platform for prestress tensioning of a precast beam, comprising:

the platform frame (2) comprises frame columns (21) and frame beams (22) connected between the frame columns (21), and the platform frame (2) is provided with a horizontal bearing platform (25);

the base rollers (1) are arranged at the bottom of the platform frame (2);

the two longitudinal slideway beams (3) are arranged on two sides of the top of the platform frame (2) in parallel and are positioned at the top ends of the frame columns (21);

the two ends of the transverse slideway beam (4) are provided with first pulleys (41), the two first pulleys (41) are respectively and slidably arranged on the two longitudinal slideway beams (3), and the transverse slideway beam (4) is provided with a pulley car (42) which can move along the length direction of the transverse slideway beam;

and a chain-pouring device (5) connected below the pulley car (42).

2. A movable operating platform for prestress tensioning of a precast beam according to claim 1, characterized in that the platform frame (2) further comprises:

the two slide cantilever arms (23) are used for respectively bearing the longitudinal slide beams (3), and the slide cantilever arms (23) are positioned at the top ends of the frame columns (21);

one end of the supporting arm (26) is connected with a slide cantilever arm (23), and the other end of the supporting arm is connected with a frame column (21) below the slide cantilever arm (23).

3. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the platform frame (2) is a cubic frame, and the back and two side surfaces of the platform frame are also provided with protective steel plates (24).

4. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the two ends of the transverse slide rail beam (4) are provided with first braking baffles (43) for preventing the pulley (42) from falling out, and the two ends of the longitudinal slide rail beam (3) are provided with second braking baffles (31) for preventing the first pulley (41) from falling out.

5. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the base rollers (1) are universal wheels, and each base roller (1) is provided with a braking buckle (11).

6. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the cross section of the longitudinal slideway beam (3) is triangular, the first pulleys (41) are connected with the tips of two identical vertebral bodies, and two conical surfaces of the first pulleys are matched with two inclined surfaces of the longitudinal slideway beam (3).

7. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the cross section of the cross slide rail beam (4) is I-shaped, and the pulley vehicle (42) comprises second pulleys (422) which are arranged in grooves on two sides of the cross slide rail beam (4) in a rolling mode.

8. A movable operating platform for prestress tensioning of a precast beam as set forth in claim 7, wherein: the pulley car (42) further comprises a car body (421) connected with the second pulleys (422) in the grooves on two sides, a hanging ring is arranged at the bottom of the car body (421), and the chain pouring device (5) is hung on the hanging ring of the pulley car (42).

9. A movable operating platform for prestress tensioning of a precast beam according to claim 8, characterized in that the chain-pouring device (5) comprises:

a lifting pulley (50) with a hook mounted on the top, the hook being hung on the hanging ring;

and a chain block (51) hung around the lifting pulley (50), one end of the chain block (51) being used for mounting the tensioning device (52).

10. A movable operating platform for prestress tensioning of a precast beam as claimed in claim 1, characterized in that: the chain pouring device (5) is at least one set, the horizontal bearing platform (25) is at least one layer, the horizontal bearing platform (25) is positioned below the longitudinal slideway beam (3), and the longitudinal length of the horizontal bearing platform (25) is shorter than that of the longitudinal slideway beam (3).