Prefabricated box girder steel bar binding positioning jig frame

Abstract

The utility model relates to the technical field of box girder construction, and discloses a prefabricated box girder steel bar binding positioning jig frame which comprises supporting legs and a supporting frame, the supporting legs are fixedly connected to the positions, close to the four corners, of the bottom face of the supporting frame, and equidistant distance adjusting assemblies are symmetrically arranged on the surface of the supporting frame. The reinforcing steel bar binding device has the beneficial effects that reinforcing steel bars can be evenly distributed between the adjacent equidistant supporting blocks, the accuracy of the positions of the reinforcing steel bars during binding of the reinforcing steel bars is guaranteed, time adjustment can be conveniently conducted on the distance between every two adjacent positioning plates according to construction requirements, and the construction flexibility is improved through the design of the adjustable distance; the problems that in the background technology, existing traditional prefabricated box girder reinforcing steel bars are directly bound on a girder manufacturing pedestal, due to the influence of factors such as dispersion of the girder manufacturing pedestal, time and labor are wasted in semi-finished product reinforcing steel bar carrying, the qualification rate of reinforcing steel bar protection layers is low, the line type of a reinforcing steel bar framework is poor, the spacing of the reinforcing steel bars is not uniform, and the like are solved. The steel bar binding efficiency is influenced due to the defects that a steel bar framework is polluted by a beam-making pedestal steel plate release agent and the turnover period of a pedestal is long and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of box girder construction, in particular to a positioning jig for reinforcing bar binding of precast box girders. Background Technique

[0002] The steel cage of the precast concrete box girder is divided into two parts, namely the bottom and web steel cage and the top plate steel cage, which are bound separately. When binding the bottom and web steel cage, first make a positioning jig for the bottom and web steel bars, and then use the positioning jig for the bottom and web steel bars to bind the bottom and web steel cage.

[0003] The traditional binding of the reinforcing bars of the precast box girder is directly carried out on the beam manufacturing pedestal. Due to factors such as the dispersion of the beam manufacturing pedestal, there are disadvantages such as time-consuming and laborious handling of semi-finished reinforcing bars, low qualification rate of the reinforcing bar protection layer, poor linearity of the reinforcing bar skeleton, uneven reinforcing bar spacing, pollution of the reinforcing bar skeleton by the release agent of the steel plate of the beam manufacturing pedestal, and long turnover cycle of the pedestal, which in turn affects the efficiency of reinforcing bar binding. Content of the Utility Model

[0004] The utility model provides a positioning jig for reinforcing bar binding of precast box girders, which has the beneficial effects that the reinforcing bars can be evenly distributed between adjacent equidistant supporting blocks, ensuring the accuracy of the positions of the reinforcing bars during binding, and it is convenient to adjust the distance between two adjacent positioning plates according to the construction needs. This design of adjustable spacing increases the flexibility of construction, and solves the problems mentioned in the above background technique, that is, the traditional binding of the reinforcing bars of the precast box girder is directly carried out on the beam manufacturing pedestal. Due to factors such as the dispersion of the beam manufacturing pedestal, there are disadvantages such as time-consuming and laborious handling of semi-finished reinforcing bars, low qualification rate of the reinforcing bar protection layer, poor linearity of the reinforcing bar skeleton, uneven reinforcing bar spacing, pollution of the reinforcing bar skeleton by the release agent of the steel plate of the beam manufacturing pedestal, and long turnover cycle of the pedestal, which in turn affects the efficiency of reinforcing bar binding.

[0005] The utility model provides the following technical solution: a positioning jig for reinforcing bar binding of precast box girders, including legs and a support frame. The legs are fixedly connected to the bottom surface of the support frame near its four corner positions. Equally spaced distance adjusting components are symmetrically arranged on the surface of the support frame, and a quick distance adjusting component is also installed on the surface of the support frame.

[0006] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: The equal-spacing distance-adjusting assembly includes a positioning plate, equal-spacing distance-adjusting rods, equal-spacing supporting blocks, sliding protrusions, and an adjusting portion. Positioning plates are symmetrically arranged on the surface of the support frame. Equal-spacing distance-adjusting rods are rotatably connected within the positioning plates. A plurality of equal-spacing supporting blocks are slidably connected within the strip-shaped grooves formed on the surfaces of the positioning plates. A plurality of equally-spaced spiral grooves are formed on the surfaces of the equal-spacing distance-adjusting rods. Sliding protrusions are integrally formed on the inner walls of the plurality of equal-spacing supporting blocks. The plurality of equal-spacing supporting blocks are respectively slidably connected within the equally-spaced spiral grooves through the sliding protrusions. Positioning hanging grooves are formed on the surfaces of the equal-spacing supporting blocks. One end of the equal-spacing distance-adjusting rod extends out of the positioning plate and is connected to the adjusting portion arranged on the surface of the positioning plate.

[0007] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: Limiting sliders are integrally formed on one side of the plurality of equal-spacing supporting blocks. A guiding plate is fixed within the positioning plate and on one side of the equal-spacing distance-adjusting rod. The plurality of equal-spacing supporting blocks are slidably connected to the surfaces of the guiding plates through the limiting sliders.

[0008] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: A fixing plate is fixed on the surface of the positioning plate. A T-shaped rod is slidably connected to the surface of the fixing plate. A spring is sleeved outside the T-shaped rod. A limiting plug is integrally formed at one end of the T-shaped rod. A plurality of limiting slots are formed on the outside of the equal-spacing distance-adjusting rod.

[0009] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: The quick distance-adjusting assembly includes a bottom plate, a hydraulic rod, a distance-adjusting top plate, an inclined rod, and a distance-adjusting plate. The bottom plate is installed on the bottom surface of the support frame. The hydraulic rod is installed on the surface of the bottom plate. The piston end of the hydraulic rod is installed with the distance-adjusting top plate. The inclined rod is slidably connected within the inclined holes formed on the surface of the distance-adjusting top plate. One end of the inclined rod is connected to the distance-adjusting plate slidably connected within the support frame. The positioning plate is fixedly installed on the surface of the distance-adjusting plate.

[0010] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: Sliding strips are integrally formed on the surface of the distance-adjusting plate. The distance-adjusting plate is slidably connected within the sliding grooves formed on the surface of the support frame through the sliding strips.

[0011] As an alternative solution for the positioning fixture for steel bar binding of the precast box girder of the present utility model, the following is provided: Pulleys are installed on the bottom surface of the distance-adjusting plate. Pulley grooves adapted to the pulleys are formed on the surface of the support frame. The distance-adjusting plate is slidably connected to the surface of the support frame through the pulleys and the pulley grooves.

[0012] The present utility model has the following beneficial effects:

[0013] 1. The precast box girder steel bar binding and positioning jig, through the combined use of structures such as equidistant distance adjusting rods, equidistant support blocks, and equidistant spiral grooves, when using this kind of steel bar binding and positioning jig, it can drive adjacent steel bars to adjust the spacing in an equidistant distance adjusting manner, and then facilitate the uniform separation of the steel bars. The steel bars can be evenly distributed between adjacent equidistant support blocks, ensuring the accuracy of the steel bar positions during binding. The equidistant adjustment can ensure the uniformity of the steel bar distribution, thereby improving the overall stability and bearing capacity of the precast box girder structure. The evenly distributed steel bars can more effectively share the load, reduce local stress concentration, and lower the risk of cracks or damage occurring in the structure during use. The equidistant adjustment makes the steel bar arrangement of each box girder meet the standard and unified requirements, reduces the quality differences caused by manual operation errors, and improves the qualification rate and reliability of the product.

[0014] 2. The precast box girder steel bar binding and positioning jig, through the combined use of structures such as T-shaped rods, limit plugs, and limit slots, after adjusting the spacing according to the use requirements, it can timely limit the equidistant distance adjusting rod, ensuring that the distance between adjacent steel bars does not change under the action of external forces after adjustment. The automatic fixation can effectively avoid errors and mistakes caused by human factors, reduce the deviation of steel bar positions caused by improper operation or negligence of workers, improve the reliability and consistency of the construction quality, reduce the rework and repair costs that may occur due to inaccurate steel bar positions, and speed up the efficiency of steel bar bundling.

[0015] 3. The precast box girder steel bar binding and positioning jig, through the combined use of structures such as distance adjusting top plates, inclined rods, and distance adjusting plates, so that when it is necessary to adjust the distance between two adjacent positioning plates according to the construction needs, this adjustable spacing design increases the flexibility of construction. It can adapt to the production requirements of precast box girders of different specifications and sizes, reduce the costs and time of remaking or modifying the jig due to the inability of fixed spacing to meet specific design requirements. By precisely adjusting the bottom plate spacing, it can better ensure that the steel bar arrangement meets the design standards, thereby enhancing the stability and bearing capacity of the box girder structure. When it is necessary to produce box girders with different spacing requirements, there is no need to replace the jig, and only simple spacing adjustment is required to quickly put into production, shortening the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the elevation structure schematic diagram of the equidistant distance adjusting component of the present utility model Figure 1 .

[0017] Figure 2 is the elevation structure schematic diagram of the quick distance adjusting component of the present utility model Figure 2 .

[0018] Figure 3Schematic diagram of the structure of the slide bar, distance adjusting plate and inclined rod in the present utility model.

[0019] Figure 4 Schematic diagram of the structure of the positioning plate, adjusting plate and fixing plate in the present utility model.

[0020] Figure 5 Schematic diagram of the structure of the guide plate and equidistant distance adjusting rod in the present utility model Figure 1 。

[0021] Figure 6 Schematic diagram of the structure of the spring, fixing plate and T-shaped rod in the present utility model Figure 1 。

[0022] Figure 7 In the present utility model Figure 5 Enlarged schematic diagram of the structure at position A.

[0023] In the figure: 1, leg; 2, support frame; 3, equidistant distance adjusting assembly; 31, positioning plate; 32, equidistant distance adjusting rod; 33, equidistant support block; 34, sliding convex; 35, equidistant spiral groove; 36, limit slider; 37, positioning hanging groove; 38, guide plate; 39, fixing plate; 310, T-shaped rod; 311, spring; 312, limit plug; 313, limit slot; 314, adjusting part; 4, quick distance adjusting assembly; 41, bottom plate; 42, hydraulic rod; 43, distance adjusting top plate; 44, inclined rod; 45, distance adjusting plate; 46, slide bar; 47, chute; 48, pulley; 49, pulley groove. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1 to 7 , a precast box girder steel bar binding positioning jig, including legs and a support frame. Legs are fixedly connected to the bottom surface of the support frame near the four corners thereof. Equidistant distance adjusting assemblies are symmetrically arranged on the surface of the support frame, and a quick distance adjusting assembly is also installed on the surface of the support frame.

[0027] The equidistant distance-adjusting component includes a positioning plate, an equidistant distance-adjusting rod, equidistant supporting blocks, sliding protrusions and an adjusting part. Positioning plates are symmetrically arranged on the surface of the support frame. An equidistant distance-adjusting rod is rotatably connected inside the positioning plate. A plurality of equidistant supporting blocks are slidably connected in the strip-shaped grooves formed on the surface of the positioning plate. A plurality of equidistant spiral grooves are formed on the surface of the equidistant distance-adjusting rod. Sliding protrusions are integrally formed on the inner walls of the plurality of equidistant supporting blocks. The plurality of equidistant supporting blocks are slidably connected to the equidistant spiral grooves one by one through the sliding protrusions. Positioning hanging grooves are formed on the surface of the equidistant supporting blocks. One end of the equidistant distance-adjusting rod extends out of the positioning plate and is connected to the adjusting part arranged on the surface of the positioning plate.

[0028] Limiting sliders are integrally formed on one side of the plurality of equidistant supporting blocks. A guiding plate is fixed inside the positioning plate and on one side of the equidistant distance-adjusting rod. The plurality of equidistant supporting blocks are slidably connected to the surface of the guiding plate through the limiting sliders.

[0029] A fixing plate is fixed on the surface of the positioning plate. A T-shaped rod is slidably connected to the surface of the fixing plate. A spring is sleeved outside the T-shaped rod. A limiting plug is integrally formed at one end of the T-shaped rod. A plurality of limiting slots are formed on the outside of the equidistant distance-adjusting rod.

[0030] The working principle of this embodiment: When using this kind of steel bar binding positioning jig, first place the steel bars between adjacent positioning plates, and place the steel bars in the positioning hanging grooves formed on the surface of the equidistant supporting blocks one by one for positioning. After positioning, manually rotate the adjusting part according to the construction needs, so that the connected equidistant distance-adjusting rod rotates. Then, the equidistant supporting blocks slidably connected to the equidistant spiral grooves formed on the surface of the equidistant distance-adjusting rod through the sliding protrusions can drive the adjacent steel bars to adjust the spacing in an equidistant and fixed-distance manner, thus facilitating the uniform separation of the steel bars. The steel bars can be evenly distributed between adjacent equidistant supporting blocks, ensuring the accuracy of the position of the steel bars during steel bar binding. The equidistant adjustment can ensure the uniformity of the distribution of the steel bars, thereby improving the overall stability and bearing capacity of the precast box girder structure. The evenly distributed steel bars can share the load more effectively, reduce local stress concentration, and reduce the risk of cracks or damage to the structure during use. The equidistant adjustment makes the steel bar arrangement of each box girder meet the standard and unified requirements, reduces the quality differences caused by manual operation errors, and improves the qualification rate and reliability of the product;

[0031] After adjusting the spacing according to the usage requirements, the limit plug at one end of the T-shaped rod elastically set by the spring can be inserted into the limit slot opened on the surface of the equidistant spacing-adjusting rod to limit the equidistant spacing-adjusting rod, ensuring that the distance between adjacent steel bars will not change under the action of external forces after adjustment. The automatic fixation can effectively avoid errors and mistakes caused by human factors, reduce the deviation of the steel bar position caused by improper operation or negligence of workers, improve the reliability and consistency of the construction quality, reduce the rework and repair costs that may be generated due to inaccurate steel bar positions, and speed up the efficiency of steel bar bundling.

[0032] Embodiment 2

[0033] This embodiment is an improvement made on the basis of Embodiment 1. Specifically, please refer to Figures 1 to 7 , the quick spacing-adjusting assembly includes a bottom plate, a hydraulic rod, a spacing-adjusting top plate, an inclined rod and a spacing-adjusting plate. The bottom plate is installed on the bottom surface of the support frame, the hydraulic rod is installed on the surface of the bottom plate, the piston end of the hydraulic rod is installed with a spacing-adjusting top plate, the inclined rod is slidably connected in the inclined hole opened on the surface of the spacing-adjusting top plate, and one end of the inclined rod is connected to the spacing-adjusting plate slidably connected in the support frame, and the positioning plate is fixedly installed on the surface of the spacing-adjusting plate.

[0034] The surface of the spacing-adjusting plate is integrally formed with sliding strips, and the spacing-adjusting plate is slidably connected in the chute opened on the surface of the support frame through the sliding strips.

[0035] The bottom surface of the spacing-adjusting plate is installed with pulleys, and the surface of the support frame is provided with pulley grooves adapted to the pulleys. The spacing-adjusting plate is slidably connected to the surface of the support frame through the pulleys and the pulley grooves.

[0036] The working principle of this embodiment: When in use, when adjusting the distance between two adjacent positioning plates according to the construction needs, by controlling the expansion and contraction of the piston end of the hydraulic rod, it can then prompt the spacing-adjusting top plate installed at its piston end to move accordingly, and further prompt the inclined rod to slide in the inclined hole opened on the surface of the spacing-adjusting top plate, and further enable the two adjacent spacing-adjusting plates to drive the positioning plates to quickly adjust the spacing in the support frame. During the adjustment, through the cooperation of the set sliding strips and the chute, the adjustment process can be made smoother. This adjustable-spacing design increases the flexibility of construction. It can adapt to the production requirements of precast box girders of different specifications and sizes, reduce the costs and time for remaking or modifying the formwork due to the inability of fixed spacing to meet specific design requirements, and can better ensure that the arrangement of steel bars meets the design standards by precisely adjusting the bottom plate spacing, thereby enhancing the stability and load-bearing capacity of the box girder structure. When it is necessary to produce box girders with different spacing requirements, there is no need to replace the formwork, and only the spacing needs to be simply adjusted to quickly put into production, shortening the production cycle;

[0037] The pulley and the pulley groove are cooperatively arranged so that when the two distance adjusting plates are adjusting the distance, they can be smoother, reduce the jamming during the adjustment process, and improve the smoothness during the distance adjustment process.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A positioning fixture for steel bar binding of precast box girders, comprising legs (1) and a support frame (2), characterized in that: The bottom surface of the support frame (2) is fixedly connected with legs (1) near the four corners thereof. The surface of the support frame (2) is symmetrically provided with equidistant distance adjustment components (3), and a quick distance adjustment component (4) is also installed on the surface of the support frame (2).

2. The precast box girder steel bar binding and positioning jig according to claim 1, characterized in that: The equidistant distance adjustment component (3) includes a positioning plate (31), an equidistant distance adjustment rod (32), equidistant support blocks (33), sliding protrusions (34), and an adjustment part (314). Positioning plates (31) are symmetrically arranged on the surface of the support frame (2). An equidistant distance adjustment rod (32) is rotatably connected inside the positioning plate (31). A plurality of equidistant support blocks (33) are slidably connected in the strip-shaped grooves formed on the surface of the positioning plate (31). A plurality of equidistant spiral grooves (35) are formed on the surface of the equidistant distance adjustment rod (32). Sliding protrusions (34) are integrally formed on the inner walls of the plurality of equidistant support blocks (33). The plurality of equidistant support blocks (33) are respectively slidably connected in the equidistant spiral grooves (35) through the sliding protrusions (34). A positioning hanging groove (37) is formed on the surface of the equidistant support block (33). One end of the equidistant distance adjustment rod (32) extending out of the positioning plate (31) is connected to the adjustment part (314) arranged on the surface of the positioning plate (31).

3. The prefabricated box girder steel bar binding and positioning jig according to claim 2, characterized in that: A limiting slider (36) is integrally formed on one side of each of the plurality of equidistant support blocks (33). A guiding plate (38) is fixed inside the positioning plate (31) and on one side of the equidistant distance adjustment rod (32). The plurality of equidistant support blocks (33) are respectively slidably connected on the surface of the guiding plate (38) through the limiting sliders (36).

4. The precast box girder steel bar binding and positioning jig according to claim 3, wherein: A fixing plate (39) is fixed on the surface of the positioning plate (31). A T-shaped rod (310) is slidably connected to the surface of the fixing plate (39). A spring (311) is sleeved outside the T-shaped rod (310). A limiting plug (312) is integrally formed at one end of the T-shaped rod (310). A plurality of limiting slots (313) are formed on the outside of the equidistant distance adjustment rod (32).

5. The precast box girder steel bar binding and positioning jig according to claim 2, characterized in that: The quick distance adjustment component (4) includes a bottom plate (41), a hydraulic rod (42), a distance adjustment top plate (43), an inclined rod (44), and a distance adjustment plate (45). The bottom plate (41) is installed on the bottom surface of the support frame (2). The hydraulic rod (42) is installed on the surface of the bottom plate (41). The piston end of the hydraulic rod (42) is installed with a distance adjustment top plate (43). An inclined rod (44) is slidably connected in the inclined hole formed on the surface of the distance adjustment top plate (43). One end of the inclined rod (44) is connected to the distance adjustment plate (45) slidably connected inside the support frame (2). The positioning plate (31) is fixedly installed on the surface of the distance adjustment plate (45).

6. The precast box girder steel bar binding and positioning jig according to claim 5, characterized in that: A sliding strip (46) is integrally formed on the surface of the distance adjustment plate (45). The distance adjustment plate (45) is slidably connected in the chute (47) formed on the surface of the support frame (2) through the sliding strip (46).

7. The precast box girder steel bar binding and positioning jig according to claim 5, characterized in that: A pulley (48) is installed on the bottom surface of the pitch adjustment plate (45), a pulley groove (49) adapted to the pulley (48) is formed on the surface of the support frame (2), and the pitch adjustment plate (45) is slidably connected to the surface of the support frame (2) through the pulley (48) and the pulley groove (49).

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