Prefabricated box girder web reinforcement spacing limiting frame

Abstract

The application discloses a prefabricated box girder web reinforcement spacing limiting frame, which comprises a rack and further comprises an adjusting assembly for adjusting the reinforcement spacing and a positioning assembly for fixing the reinforcement. The adjusting assembly comprises a base, lifting plates, left screw rods A, right screw rods A, sliding cylinders A, sliding cylinders B and jacks. The base is fixedly connected to the bottom of the rack, a plurality of the lifting plates are slidably connected in the rack, a plurality of the left screw rods A are rotatably connected in the base and the lifting plates respectively, the other ends of the left screw rods A are fixedly connected with the right screw rods A, a plurality of the right screw rods A are rotatably connected in the base and the lifting plates respectively, the sliding cylinder A is screw-connected on the left screw rod A, the sliding cylinder B is screw-connected on the right screw rod A, the jacks are hinged between the sliding cylinder A and the sliding cylinder B, and the two jacks are rotatably connected at the intersection. The application can quickly adjust the reinforcement spacing.

Description

Technical Field

[0001] This invention belongs to the field of steel reinforcement construction technology, and in particular relates to a spacing limiter for the web reinforcement of a precast box girder. Background Technology

[0002] Reinforcing bars refer to steel used in reinforced concrete and prestressed reinforced concrete. The cross-section of reinforcing bars is circular, and sometimes square with rounded corners. Reinforcing bar processing generally involves four steps: rust removal, straightening, cutting, and forming. They are mainly used in various large, heavy, light, thin-walled, and high-rise building structures. They are divided into three types: plain round bars, ribbed bars, and twisted bars. To improve their rigidity, reinforcing bars are often tied or welded together. They are usually placed on a limiting frame for connection, but such limiting frames are not convenient for adjusting the spacing of reinforcing bars and are prone to deformation. A structure that facilitates the adjustment of reinforcing bar spacing is proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a precast box girder web reinforcement spacing limiting frame, which solves the aforementioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a precast box girder web reinforcement spacing limiting frame, comprising a frame and further comprising: an adjustment component for adjusting the reinforcement spacing; and a positioning component for fixing the reinforcement; the adjustment component comprises a base, a lifting plate, a left-hand screw A, a right-hand screw A, a sliding cylinder A, a sliding cylinder B, and a top rod; the base is fixedly connected to the bottom of the frame; multiple lifting plates are slidably connected within the frame; multiple left-hand screws A are rotatably connected to the base and the lifting plate respectively; the other end of the left-hand screw A is fixedly connected to the right-hand screw A; multiple right-hand screws A are rotatably connected to the base and the lifting plate respectively; the sliding cylinder A is threadedly connected to the left-hand screw A; the sliding cylinder B is threadedly connected to the right-hand screw A; and a top rod is hinged between the sliding cylinder A and the sliding cylinder B, with two top rods rotatably connected at their intersection.

[0005] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0006] A further technical solution: Slider A and slider B are slidably connected to the top of the frame, and slider A and slider B are respectively hinged to two push rods. The frame is connected to the push rod assembly.

[0007] Further technical solution: The positioning component includes a worm, a worm wheel, a left-hand lead screw B, and a right-hand lead screw B. The worms are respectively fixedly connected to the left-hand lead screw A and the right-hand lead screw B. The worms are meshed with the worm wheel. The left-hand lead screw B and the right-hand lead screw B are respectively fixedly connected to the upper and lower sides of the worm wheel. The left-hand lead screw B and the right-hand lead screw B are rotatably connected to the base and the lifting plate.

[0008] A further technical solution: The left-hand lead screw B and the right-hand lead screw B are respectively threaded with slip rings, the slip rings are slidably connected to the base and the lifting plate, the slip rings are respectively fixedly connected with connecting plates, and the connecting plates are fixedly connected with multiple arc plates.

[0009] A further technical solution: The push rod assembly includes a base plate, a push rod, and an eccentric wheel. The two frames are slidably connected to the base plate. One end of the push rod is hinged to the frame, and the other end of the push rod is rotatably connected to the eccentric part of the eccentric wheel.

[0010] A further technical solution: A shaft is fixedly connected to the center of the eccentric wheel shaft, the shaft is rotatably connected to the base plate, a pulley is fixedly connected to the shaft, the two pulleys cooperate with each other and are connected to the belt drive, and the shaft is fixedly connected to the output shaft of the motor.

[0011] Further technical solution: The feeding assembly includes a limiting plate, a sliding rod, and a sliding table. The limiting plate is fixedly connected to the base plate. Sliding cylinders are slidably connected to both sides of the sliding rod. The sliding cylinders are slidably connected to the limiting plate. The sliding table is slidably connected to the sliding rod.

[0012] A further technical solution: the slide is threaded onto the lead screw, one end of the lead screw is rotatably connected to the slide rod, the other end of the lead screw is fixedly connected to the output shaft of the motor, and the motor is fixedly connected to the slide rod.

[0013] A further technical solution: A connecting rod is rotatably connected to the slide table, a plurality of retaining rings are fixedly connected to the connecting rod, a gear is fixedly connected to the connecting rod, and a rack is slidably connected to the slide rod.

[0014] Beneficial effects

[0015] This invention provides a precast box girder web reinforcement spacing limiting frame, which has the following advantages compared with the prior art:

[0016] 1. Relevant technicians place the reinforcing bars onto multiple curved plates and start the motor connected to the right-hand screw A. This causes the right-hand screw A to drive the left-hand screw A, which is fixedly connected to it, to rotate synchronously. This causes the sliding cylinders A and B, which are threaded onto the left-hand screw A and the right-hand screw A, to begin linear, opposite-direction movement. This, in turn, causes the sliding cylinders A and B to drive the hinged push rods to move synchronously, thus reducing the distance between the two ends of the push rods. This allows the lifting plate to slide along its connection with the frame, adjusting the spacing of the reinforcing bars placed on the curved plates and preventing misalignment during installation. Simultaneously, when the left-hand screw A... When the right-hand screw A rotates, the worm gear fixedly connected to it rotates synchronously, which in turn drives the worm wheel meshing with it to start rotating. This causes the worm wheel to drive the left-hand screw B and the right-hand screw B fixedly connected to it to start rotating synchronously. This causes the slip rings threadedly connected to the left-hand screw B and the right-hand screw B to start linearly moving in opposite directions. This causes the slip rings to drive the connecting plate fixedly connected to them to move synchronously. This causes the connecting plate to drive the arc plate fixedly connected to it to start linearly moving in opposite directions. This allows the two arc plates to cooperate with each other to clamp and position the reinforcing bar, preventing the reinforcing bar from slipping off the arc plate.

[0017] 2. When the rebar is short, the technicians start the motor connected to the shaft, causing the shaft to drive the pulleys fixed to it to rotate synchronously. This, in turn, causes the two pulleys to rotate synchronously with the belts connected to them, leading to the synchronous rotation of the two shafts. This, in turn, causes the eccentric wheel fixed to the shaft to rotate synchronously. At this point, the push rod connected to the eccentric wheel begins to rotate in a circular motion, pushing the frame hinged to it. This causes the two frames to slide along their connection to the base plate, adjusting the spacing between the frames so that even shorter rebars can be placed on the curved plate. After the frame spacing is adjusted, the rebar is placed on multiple retaining rings. The slide bar is manually pushed to make it move linearly along the limit plate, so that the slide table is between the two arc plates. At this time, the relevant technicians start the motor and grip the rack, so that the motor drives the lead screw fixedly connected to its output shaft to rotate synchronously. The lead screw drives the slide table threadedly connected to it to start sliding along the slide bar. At the same time, when the gear slides to the upper end of the rack, the gear starts to rotate with the cooperation of the rack, so that the gear drives the connecting rod fixedly connected to its shaft to rotate synchronously. This causes the connecting rod to drive the retaining ring fixedly connected to it to rotate synchronously, so that the retaining ring rotates 90° and pushes the steel bar placed on it onto the arc plate, so as to facilitate the loading and stacking of the steel bar. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is an enlarged schematic diagram of the positioning structure of the present invention.

[0020] Figure 3 This is an enlarged cross-sectional view of the transmission structure of the present invention.

[0021] Figure 4 This is an enlarged schematic diagram of the lead screw structure of the present invention.

[0022] Figure 5 This is a schematic cross-sectional view of the present invention.

[0023] Figure reference numerals: Frame 101, Adjustment assembly 2, Positioning assembly 3, Push rod assembly 4, Feeding assembly 5, Base 201, Lifting plate 202, Left-hand lead screw A203, Right-hand lead screw A204, Slide cylinder A205, Slide cylinder B206, Top rod 207, Slider A208, Slider B209, Worm 301, Worm wheel 302, Left-hand lead screw B303, Right-hand lead screw B304, Slip ring 305, Connecting plate 306, Base plate 401, Shaft 402, Eccentric wheel 403, Push rod 404, Pulley 405, Belt 406, Limiting plate 501, Slide rod 502, Slide table 503, Lead screw 504, Motor 505, Connecting rod 506, Snap ring 507, Gear 508, Rack 509. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1-5 According to one embodiment of the present invention, a precast box girder web reinforcement spacing limiting frame includes a frame 101 and further includes:

[0027] Adjustment component 2 is used to adjust the spacing of the reinforcing bars;

[0028] Positioning component 3 is used to fix the reinforcing bars;

[0029] The adjustment assembly 2 includes a base 201, a lifting plate 202, a left-hand lead screw A203, a right-hand lead screw A204, a slide cylinder A205, a slide cylinder B206, and a top rod 207. The base 201 is fixedly connected to the bottom of the frame 101. The multiple lifting plates 202 are slidably connected within the frame 101. The multiple left-hand lead screws A203 are rotatably connected to the base 201 and the lifting plate 202, respectively. The other end of the left-hand lead screw A203 is fixedly connected to the right-hand lead screw A204. The multiple right-hand lead screws A204 are rotatably connected to the base 201 and the lifting plate 202, respectively. The slide cylinder A205 is threadedly connected to the left-hand lead screw A203, and the slide cylinder B206 is threadedly connected to the right-hand lead screw A204. A top rod 207 is hinged between the slide cylinders A205 and B206, and the two top rods 207 are rotatably connected at their intersection.

[0030] Specifically, slider A208 and slider B209 are slidably connected to the top of the frame 101, and slider A208 and slider B209 are respectively hinged to two push rods 207. The frame 101 is connected to the push rod assembly 4.

[0031] Specifically, the positioning component 3 includes a worm gear 301, a worm wheel 302, a left-hand lead screw B303, and a right-hand lead screw B304. The worm gears 301 are respectively fixedly connected to the left-hand lead screw A203 and the right-hand lead screw A204. The worm gears 301 are meshed with the worm wheel 302. The left-hand lead screw B303 and the right-hand lead screw B304 are respectively fixedly connected to the upper and lower sides of the worm wheel 302. The left-hand lead screw B303 and the right-hand lead screw B304 are rotatably connected to the base 201 and the lifting plate 202.

[0032] Specifically, the left-hand lead screw B303 and the right-hand lead screw B304 are respectively threaded with slip rings 305. The slip rings 305 are slidably connected to the base 201 and the lifting plate 202. The slip rings 305 are respectively fixedly connected with connecting plates 306, and multiple arc plates 307 are fixedly connected to the connecting plates 306.

[0033] In this embodiment of the invention, skilled personnel place the reinforcing bars on multiple arc plates 307 and start the motor connected to the right-hand screw A204. This causes the right-hand screw A204 to drive the left-hand screw A203, which is fixedly connected to it, to rotate synchronously. This causes the sliding cylinders A205 and B206, which are threadedly connected to the left-hand screw A203 and the right-hand screw A204, to begin linear opposite motion. This causes the sliding cylinders A205 and B206 to drive the top rods 207, which are hinged to them, to move synchronously. This reduces the distance between the two ends of the two top rods 207, causing the lifting plate 202 to begin sliding along its connection with the frame 101. This adjusts the spacing of the reinforcing bars placed on the arc plates 307, preventing misalignment of the reinforcing bars during installation. At the same time, when the left-hand screw A204... When screw A203 and right-hand screw A204 rotate, the worm 301 fixedly connected to them rotates synchronously. This causes the worm 301 to drive the worm wheel 302 meshing with it to start rotating. This causes the worm wheel 302 to drive the left-hand screw B303 and right-hand screw B304 fixedly connected to it to start rotating synchronously. This causes the slip rings 305 threaded on the left-hand screw B303 and right-hand screw B304 to start linearly moving in opposite directions. This causes the slip rings 305 to drive the connecting plate 306 fixedly connected to it to move synchronously. This causes the connecting plate 306 to drive the arc plate 307 fixedly connected to it to start linearly moving in opposite directions. This allows the two arc plates 307 to cooperate with each other to clamp and position the reinforcing bar, preventing the reinforcing bar from slipping off the arc plate 307.

[0034] Specifically, the push rod assembly 4 includes a base plate 401, a push rod 404, and an eccentric wheel 403. The two frames 101 are slidably connected to the base plate 401. One end of the push rod 404 is hinged to the frame 101, and the other end of the push rod 404 is rotatably connected to the eccentric part of the eccentric wheel 403.

[0035] Specifically, a shaft 402 is fixedly connected to the center of the eccentric wheel 403. The shaft 402 is rotatably connected to the base plate 401. A pulley 405 is fixedly connected to the shaft 402. The two pulleys 405 cooperate with each other and are connected to the belt 406 for transmission. The shaft 402 is fixedly connected to the output shaft of the motor.

[0036] Specifically, the feeding assembly 5 includes a limiting plate 501, a sliding rod 502, and a sliding table 503. The limiting plate 501 is fixedly connected to the base plate 401. Sliding cylinders are slidably connected to both sides of the sliding rod 502. The sliding cylinders are slidably connected to the limiting plate 501. The sliding table 503 is slidably connected to the sliding rod 502.

[0037] Specifically, the slide table 503 is threadedly connected to the lead screw 504, one end of the lead screw 504 is rotatably connected to the slide rod 502, and the other end of the lead screw 504 is fixedly connected to the output shaft of the motor 505. The motor 505 is fixedly connected to the slide rod 502.

[0038] Specifically, a connecting rod 506 is rotatably connected to the slide table 503, a plurality of retaining rings 507 are fixedly connected to the connecting rod 506, a gear 508 is fixedly connected to the connecting rod 506, and a rack 509 is slidably connected to the slide rod 502.

[0039] In this embodiment of the invention, when the reinforcing bar is short, the relevant technicians start the motor connected to shaft 402, causing shaft 402 to drive the pulley 405 fixedly connected to it to start rotating synchronously. This causes the two pulleys 405 to start rotating synchronously in cooperation with the belt 406 connected to them, thus causing the two shafts 402 to start rotating synchronously. This causes the eccentric wheel 403 fixedly connected to shaft 402 to start rotating synchronously. At this time, the push rod 404, rotatably connected to the eccentric part of the eccentric wheel 403, begins to perform circular motion. This push rod 404 pushes the frame 101 hinged to it, causing the two frames 101 to slide along their connection with the base plate 401, thereby adjusting the spacing of the frames 101 so that even shorter reinforcing bars can be placed on the arc plate 307. After the spacing of the frames 101 is adjusted, the reinforcing bar is placed on multiple retaining rings 507. The slide bar 502 is manually pushed to make it move linearly along the limiting plate 501, so that the slide table 503 is positioned between the two arc plates 307. At this time, the relevant technicians start the motor 505 and simultaneously grip the rack 509, so that the motor 505 drives the lead screw 504, which is fixedly connected to its output shaft, to rotate synchronously. The lead screw 504 drives the slide table 503, which is threadedly connected to it, to begin sliding along the slide bar 502. At the same time, when the gear 508 slides to the upper end of the rack 509, the gear 508 begins to rotate under the cooperation of the rack 509, so that the gear 508 drives the connecting rod 506, which is fixedly connected to its shaft, to rotate synchronously. This causes the connecting rod 506 to drive the retaining ring 507, which is fixedly connected to it, to rotate synchronously, causing the retaining ring 507 to rotate 90 degrees and push the steel bar placed on it onto the arc plate 307, so as to facilitate the loading and stacking of the steel bar.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] The term "fixed connection" as used in this application refers to a connection in which parts or components are fixed without any relative movement. This includes both detachable and non-detachable connections.

[0042] (1) Detachable connection: Components are fixed together using screws, splines, wedges, etc. This type of connection allows for disassembly during maintenance without damaging the parts. However, the specifications of the connectors used must be correct.

[0043] (Such as the length of bolts, keys, and wedges), and tighten them properly.

[0044] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxy-acetylene cutting for repair or replacement, these parts generally cannot be reused. Furthermore, during connection, [the following should be noted]:

[0045] Pay attention to process quality, technical testing, and remedial measures (such as correction, polishing, etc.).

[0046] The sliding connection referred to in this application means that the component can slide along a linear trajectory, and the hinge referred to in this application means that the component can rotate along an axial constraint.

[0047] In some cases, the sliding connection and hinge referred to in this application may also be damped, enabling the component to maintain in the desired position.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated box girder web reinforcement spacing limiting frame, comprising a rack (101), characterized in that, Also includes: Adjusting assembly (2) for adjusting the spacing between reinforcement bars; Positioning assembly (3) for fixing reinforcement bars; The adjusting assembly (2) comprises a base (201), a lifting plate (202), a left-handed screw rod A (203), a right-handed screw rod A (204), a sliding cylinder A (205), a sliding cylinder B (206) and a top rod (207), the base (201) is fixedly connected at the bottom of the rack (101), a plurality of lifting plates (202) are slidably connected in the rack (101), a plurality of left-handed screw rods A (203) are rotatably connected in the base (201) and the lifting plate (202) respectively, the other end of the left-handed screw rod A (203) is fixedly connected with the right-handed screw rod A (204), a plurality of right-handed screw rods A (204) are rotatably connected in the base (201) and the lifting plate (202) respectively, the sliding cylinder A (205) is threadedly connected on the left-handed screw rod A (203), the sliding cylinder B (206) is threadedly connected on the right-handed screw rod A (204), the top rod (207) is hinged between the sliding cylinder A (205) and the sliding cylinder B (206), the two top rods (207) are rotatably connected at their intersection, the rack (101) top is slidably connected with a sliding block A (208) and a sliding block B (209) respectively, the sliding block A (208) and the sliding block B (209) are hinged with the two top rods (207) respectively, the rack (101) is connected with a push rod assembly (4), the positioning assembly (3) comprises a worm (301), a worm gear (302), a left-handed screw rod B (303) and a right-handed screw rod B (304), a plurality of worms (301) are fixedly connected on the left-handed screw rod A (203) and the right-handed screw rod A (204) respectively, the worm (301) is meshingly connected with the worm gear (302), the worm gear (302) is fixedly connected with the left-handed screw rod B (303) and the right-handed screw rod B (304) on the upper and lower sides respectively, the left-handed screw rod B (303) and the right-handed screw rod B (304) are rotatably connected in the base (201) and the lifting plate (202), the push rod assembly (4) comprises a bottom plate (401), a push rod (404) and an eccentric wheel (403), two racks (101) are slidably connected on the bottom plate (401), one end of the push rod (404) is hinged on the rack (101), the other end of the push rod (404) is rotatably connected at the eccentric position of the eccentric wheel (403), the feeding assembly (5) comprises a limiting plate (501), a sliding rod (502) and a sliding table (503), the limiting plate (501) is fixedly connected on the bottom plate (401), the sliding rod (502) is slidably connected with a sliding cylinder on both sides, the sliding cylinder is slidably connected on the limiting plate (501), the sliding table (503) is slidably connected with the sliding rod (502).

2. The prefabricated box girder web reinforcement spacing limiting frame according to claim 1, characterized in that, The left screw rod B (303) and the right screw rod B (304) are respectively threadedly connected with a sliding ring (305), the sliding ring (305) is slidably connected with the base (201) and the lifting plate (202), the sliding ring (305) is respectively fixedly connected with a connecting plate (306), and the connecting plate (306) is fixedly connected with a plurality of arc plates (307).

3. The prefabricated box girder web reinforcement spacing limiting frame according to claim 1, characterized in that, The eccentric wheel (403) is fixedly connected with a shaft (402) at the shaft center, the shaft (402) is rotatably connected with the bottom plate (401), the shaft (402) is fixedly connected with a belt pulley (405), two belt pulleys (405) are in driving connection with a belt (406) in cooperation, and the shaft (402) is fixedly connected with the output shaft of the motor.

4. The prefabricated box girder web reinforcement spacing limiting frame according to claim 1, characterized in that, The sliding table (503) is threadedly connected with a lead screw (504), one end of the lead screw (504) is rotatably connected with the sliding rod (502), the other end of the lead screw (504) is fixedly connected with the output shaft of the motor (505), and the motor (505) is fixedly connected with the sliding rod (502).

5. The prefabricated box girder web reinforcement spacing limiting frame according to claim 4, characterized in that, The sliding table (503) is rotatably connected with a connecting rod (506), a plurality of clamping rings (507) are fixedly connected on the connecting rod (506), a gear (508) is fixedly connected on the connecting rod (506), and a rack (509) is slidably connected on the sliding rod (502).

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