Hinge joint reserved steel bar flattening equipment and method

Abstract

The invention provides hinge joint reserved steel bar flattening equipment and a hinge joint reserved steel bar flattening method, belongs to the field of building construction, and is used for solving the problem that in the prior art, when a bent steel bar is flattened, an annular bar needs to be embedded for stress. The device comprises an installation support, a transmission mechanism, a reset mechanism, an operation handle, at least one connecting rod assembly and at least one force transmission assembly. A transmission mechanism, a reset mechanism, an operation handle, a connecting rod assembly and a force transmission assembly are supported by arranging an installation support, and the situation that in the using process, a prefabricated part is lack of edges and corners, an embedded annular rib is bent or cracks are caused, and the bearing capacity of the prefabricated part and even a finished building is reduced is avoided; by arranging the reset mechanism, the transmission mechanism and the force transmission assembly can move upwards, and the two pressure bearing rods of the force transmission assembly are driven to rotate, so that it is ensured that bending steel bars at other positions can be continuously flattened in the follow-up process, the construction intensity of constructors is reduced, and the working efficiency of the constructors is improved.

Description

Technical Field

[0001] The invention belongs to the field of building construction, and in particular relates to a device and a method for flattening hinge joint reserved steel bars. Background Art

[0002] During the construction of bridges and other projects, prefabricated components such as hollow slab beams and T-beams are usually used to shorten the construction period. After the hollow slab beams, T-beams and other prefabricated components are installed in the predetermined position, they are then hinged to form an integral structure. Their transverse force performance depends on the reliable connection of the steel bars in the hinged joints. In order to improve the reliability of the hinged joint connection of prefabricated components, annular bars are usually reserved on the outside of the web during the prefabrication process of prefabricated components such as hollow slab beams, and bending steel bars are provided on both sides of the prefabricated components (corresponding to the position of the hinged joints). Then, the reinforcing bars provided in the hinged joints are used to enhance the overall stability between the hollow slabs and enable them to bear the load evenly. The bending steel bars need to be flattened before the hinged joint is constructed to facilitate overlap with the reinforcing bars used in subsequent construction.

[0003] During the construction process, construction workers usually use a crowbar to flatten the bending steel bars. However, using a crowbar to flatten the prefabricated components can easily cause the prefabricated components to be chipped and cornered, thereby reducing the structural strength of the prefabricated components. Patent publication number CN222519814U discloses an efficient flat bending device for pre-embedded steel bars in the hinged joints of hollow slab beams, which includes a crowbar lever arm, a crowbar hook at the front end of the crowbar lever arm, a ring lug fixed to the front lower end of the crowbar lever arm, a pressure rod upper end rotatably mounted in the ring lug, and a limited angle plate fixed to the lower end; when the crowbar hook is hooked into the embedded annular bar, the limited angle plate contacts the bending steel bar; when the crowbar lever arm applies downward force, the limited angle plate flattens the bending steel bar. However, although this method can achieve the goal of not damaging the prefabricated components, when flattening the bending steel bars, the embedded annular bar will be stressed, causing the embedded annular bar to be bent or even cracked, thereby reducing the bearing capacity of subsequent bridge projects. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a hinge joint reserved steel bar flattening device and method for solving the problem in the prior art that when flattening the bending steel bars, pre-embedded annular bars need to be stressed.

[0005] To achieve the above-mentioned objectives and other related objectives, the present invention provides a hinged joint reserved steel bar flattening device, comprising: a mounting bracket, a transmission mechanism, a reset mechanism, an operating handle, at least one group of connecting rod assemblies and at least one group of force transmission assemblies; the connecting rod assemblies and the force transmission assemblies are arranged in a one-to-one correspondence; the transmission mechanism is arranged on the mounting bracket and can slide up and down relative to the mounting bracket; the force transmission assembly includes two pressure-bearing rods arranged at intervals, the lower ends of the pressure-bearing rods are used to abut against the bent steel bars, and the upper ends are rotatably connected to the transmission mechanism; the reset mechanism is arranged on the transmission mechanism, the connecting rod assembly is connected to the reset mechanism, and is rotatably connected to the two pressure-bearing rods of the relatively arranged force transmission assembly; the operating handle is rotatably connected to the mounting bracket, and the operating handle drives the transmission mechanism to move downward to drive the force transmission assembly to move downward, and during the downward movement of the force transmission assembly, the connecting rod assembly is disengaged from the reset mechanism; the reset mechanism drives the transmission mechanism to move upward to drive the force transmission assembly to move upward and drives the two pressure-bearing rods of the force transmission assembly to rotate oppositely through the connecting rod assembly.

[0006] Optionally, the transmission mechanism includes a first transmission rod and a transmission seat, the mounting bracket includes a mounting plate provided with a mounting hole, the first transmission rod is slidably connected to the mounting hole, the transmission seat is arranged at the upper end of the first transmission rod, and the two pressure rods of the force transmission assembly are rotatably connected to the transmission seat; the reset mechanism includes an elastic member, a first limit member, a reversing assembly and a width adjustment assembly; the elastic member is sleeved on the first transmission rod, the upper end of which is connected to the lower side surface of the transmission seat, and the lower end is connected to the upper side surface of the mounting plate; the first limit member is arranged on the first transmission rod, and the upper side surface is used to abut against the lower side surface of the mounting plate to limit the maximum displacement of the first transmission rod moving upward; the reversing assembly is arranged on the lower side surface of the mounting plate, the first limit member is connected to the input end of the reversing assembly, the width adjustment assembly is connected to the output end of the reversing assembly, and the width adjustment assembly is connected to the connecting rod assembly; the reversing assembly is used to disengage the width adjustment assembly from the connecting rod assembly when the force transmission assembly moves downward; the width adjustment assembly is used to adjust the distance between the two pressure rods of the force transmission assembly and the connecting end of the bent steel bar.

[0007] Optionally, the reversing assembly includes a first mounting seat, a first guide, a first rack, a gear, a second guide and a second rack; the first mounting seat is arranged on the lower side of the mounting plate, the first guide, the gear and the second guide are arranged at intervals on the first mounting seat, and the gear is located between the first guide and the second guide; the first rack is slidably arranged on the first guide, and the first rack is connected to the first limit member and the gear; the second rack is slidably arranged on the second guide, and the second rack is connected to the width adjustment assembly and the gear.

[0008] Optionally, the width adjustment assembly includes a first adjusting member, a second limiting member and a second transmission rod; the first adjusting member includes a first hole, a second hole and a third hole connecting the first hole and the second hole, and the second limiting member and the second rack are threadedly connected to the first hole; the upper end of the second transmission rod is provided with a flange, the flange is located in the third hole, the lower end of the second transmission rod passes through the second hole and is connected to the connecting rod assembly, and the second limiting member is located between the flange and the second rack.

[0009] Optionally, the connecting rod assembly includes two fixed seats and two rotating rods, and the fixed seats, rotating rods and pressure-bearing rods are arranged in a one-to-one correspondence; a waist-shaped hole is provided at the lower end of the second transmission rod, and the fixed seat is provided on the pressure-bearing rod, one end of the rotating rod is rotatably connected to the fixed seat, and the other end is located in the waist-shaped hole at the lower end of the second transmission rod.

[0010] Optionally, the force transmission assembly also includes a third limit member arranged in one-to-one correspondence with the pressure rod; one end of the third limit member is detachably connected to the end of the pressure rod away from the transmission mechanism, and the other end is provided with a limit foot, and the limit feet of the two third limit members of the same group of force transmission assemblies are staggered.

[0011] Optionally, the connecting rod assembly and the force transmission assembly are two groups respectively, and the two groups of force transmission assemblies are arranged at intervals; the width adjustment assembly also includes a third transmission rod, which is passed through the waist-shaped hole at the lower end of the second transmission rod, and its two ends correspond to a connecting rod assembly respectively, and are rotatably connected to the two rotating rods of the connecting rod assembly.

[0012] Optionally, the transmission mechanism also includes two fourth transmission rods, two spacing adjustment assemblies and two second mounting seats which are arranged in one-to-one correspondence with the force transmission components; one end of the fourth transmission rod is connected to the transmission seat, and the other end is connected to the spacing adjustment assembly, and the second mounting seat is connected to the end of the spacing adjustment assembly away from the fourth transmission rod; the two pressure-bearing rods of the force transmission assembly are rotatably arranged on the second mounting seat; the two rotating rods of the connecting rod assembly are slidably connected to the third transmission rod in the axial direction of the third transmission rod; the spacing adjustment assembly is used to adjust the distance between the mounting seat and the transmission seat.

[0013] Optionally, the spacing adjustment assembly includes a second adjusting member, a first adjustment hole arranged on the end of the fourth transmission rod away from the transmission seat, and a second adjustment hole arranged on the transmission seat, one end of the second adjusting member is threadedly connected to the first adjustment hole, and the other end is threadedly connected to the second adjustment hole; the thread rotation direction at both ends of the second adjusting member is the same.

[0014] Optionally, the mounting bracket further includes a plurality of support columns spaced apart on the mounting plate and a roller disposed at one end of the support columns away from the mounting plate.

[0015] On the other hand, the present invention further provides a method for flattening hinged joint reserved steel bars, comprising the hinged joint reserved steel bar flattening device as described above, and further comprising:

[0016] S1: Place the device above the bending steel bar and fix it on the prefabricated component;

[0017] S2: Press the operating handle downward to make the pressure-bearing rod contact the bending steel bar;

[0018] S3: Continue to press the operating handle downward to flatten the bent steel bars.

[0019] As described above, the hinged joint reserved steel bar flattening device of the present invention has at least the following beneficial effects:

[0020] 1. By setting up mounting brackets to support the transmission mechanism, reset mechanism, operating handle, connecting rod assembly and force transmission assembly, it is possible to avoid the prefabricated components from being damaged during use and the embedded annular reinforcement from being bent or cracked, which will reduce the bearing capacity of the prefabricated components and even the completed building.

[0021] 2. By setting up a reset mechanism, the transmission mechanism and the force transmission component can move upward, and the two pressure rods of the force transmission component are driven to rotate, thereby ensuring that the bent steel bars in other positions can be flattened in the future and reducing the construction intensity of the construction personnel, thereby improving their work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a schematic diagram of the structure of an angled structure of a hinged joint reserved steel bar flattening device according to the present invention.

[0023] Figure 2 Shown is a schematic structural diagram from another angle of a hinged joint reserved steel bar flattening device of the present invention.

[0024] Figure 3 Display as Figure 2 A magnified schematic diagram of point A in FIG.

[0025] Figure 4 Shown is a schematic cross-sectional view of the width adjustment assembly of a hinged joint reserved steel bar flattening device according to the present invention.

[0026] Figure 5 Shown is a structural schematic diagram of the second adjusting member of a hinged joint reserved steel bar flattening device according to the present invention.

[0027] Component number description:

[0028] 1. Mounting bracket, 11. Mounting plate, 12. Support column, 13. Roller,

[0029] 2. Transmission mechanism, 21. First transmission rod, 22. Transmission seat, 23. Fourth transmission rod, 24. Spacing adjustment assembly, 241. Second adjustment member, 25. Second mounting seat,

[0030] 3. Reset mechanism, 31. Elastic member, 32. First limiting member,

[0031] 33. Reversing assembly, 331. First mounting seat, 332. First guide member, 333. First rack, 334. Gear, 335. Second guide member, 336. Second rack,

[0032] 34. Width adjustment assembly, 341. First adjustment member, 3411. First hole, 3412. Second hole, 3413. Third hole, 342. Second stopper, 343. Second transmission rod, 3431. Flange, 3432. Waist-shaped hole, 344. Third transmission rod,

[0033] 4. Operating handle, 41. First pressing rod, 42. Second pressing rod, 43. Connecting rod, 44. Third pressing rod, 45. Holding rod, 46. Pressing slide,

[0034] 5. Connecting rod assembly, 51. Fixed seat, 52. Rotating rod,

[0035] 6. Force transmission component, 61. Pressure rod, 62. Third limiter, 621. Limiting foot, 622. Bending section, DETAILED DESCRIPTION

[0036] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0037] Please refer to all the following drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0038] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0039] See also Figure 1-2The present invention provides a hinged joint reserved steel bar flattening device, comprising: a mounting bracket 1, a transmission mechanism 2, a reset mechanism 3, an operating handle 4, at least one group of connecting rod assemblies 5 and at least one group of force transmission assemblies 6; the connecting rod assemblies 5 and the force transmission assemblies 6 are arranged in a one-to-one correspondence; the transmission mechanism 2 is arranged on the mounting bracket 1 and can slide up and down relative to the mounting bracket 1; the force transmission assembly 6 includes two pressure-bearing rods 61 arranged at intervals, the lower end of the pressure-bearing rod 61 is used to abut against the bending steel bar, and the upper end is rotatably connected to the transmission mechanism 2. Specifically, one of the pressure-bearing rods 61 abuts against the bending steel bar of one of the adjacent prefabricated components, and the other pressure-bearing rod 61 abuts against the bending steel bar of another adjacent prefabricated component. Abutment, so that this equipment can flatten at least two bent steel bars at the same time to improve construction efficiency; the reset mechanism 3 is arranged on the transmission mechanism 2, and the connecting rod assembly 5 is connected to the reset mechanism 3, and is rotatably connected to the two pressure-bearing rods 61 of the oppositely arranged force transmission assembly 6; the operating handle 4 is rotatably connected to the mounting bracket 1, and the operating handle 4 drives the transmission mechanism 2 to move downward to drive the force transmission assembly 6 to move downward, and in the process of the force transmission assembly 6 moving downward, the connecting rod assembly 5 is disengaged from the reset mechanism 3; the reset mechanism 3 drives the transmission mechanism 2 to move upward to drive the force transmission assembly 6 to move upward and drives the two pressure-bearing rods 61 of the force transmission assembly 6 to rotate oppositely through the connecting rod assembly 5.

[0040] The operating handle 4 may include a first pressing rod 41, a second pressing rod 42, a connecting rod 43, a third pressing rod 44, and a gripping rod 45. One end of the first pressing rod 41 and the second pressing rod 42 may be rotatably connected to the mounting plate 11 via a rotating shaft, and the other end is connected to the connecting rod 43. The third pressing rod 44 is connected to the connecting rod 43, and the gripping rod 45 is connected to the end of the third pressing rod 44 away from the connecting rod 43. The gripping rod 45 forms a T-shape when connected to the third pressing rod 44, making it easier for the operator to grip. A pressing groove 46 is provided on the lower side of the first pressing rod 41 and the second pressing rod 42. The transmission base 22 may be provided with an abutting rod for abutting the pressing groove 46. Furthermore, the abutting rod may be provided with two pressing grooves corresponding to the pressing grooves 46. The pressing grooves and the pressing grooves 46 can prevent the operating handle 4 from shifting left or right.

[0041] The mounting bracket 1 may include a mounting plate 11 and a plurality of support columns 12. The support columns 12 may be provided in four numbers, each corresponding to a corner of the mounting plate 11, so as to support the mounting plate 11 on the prefabricated component. Rollers 13 may be provided at the bottom of the support columns 12, two of which may be universal wheels, and the other two rollers 13 may be fixed wheels, so as to drive the mounting bracket 1 to move. In addition, a brake is provided on each roller 13 or on two of the rollers 13, so that the brake can be used to fix the mounting bracket 1 on the prefabricated component to avoid relative displacement between the mounting bracket 1 and the prefabricated component when the bent steel bars are flattened. The mounting plate 11 may be provided with a mounting hole and four hollow portions, and the hollow portion is used for the pressure rod 61 to pass through.

[0042] When in use, the pressure rod 61 has two states. When not in use, the pressure rod 61 is in an inclined state or a vertical state relative to the mounting plate 11 of the mounting bracket 1 (hereinafter referred to as the first state). After the bent steel bars are flattened, the pressure rod 61 is in an inclined state relative to the mounting plate 11 of the mounting bracket 1 (hereinafter referred to as the second state). During use, when the bent steel bars of the prefabricated component at the hinge joint are flattened, they usually cause the two pressure rods 61 of the force transmission assembly 6 to rotate toward each other, resulting in the pressure rod 61 being tilted relative to the mounting bracket 1. If the pressure rod 61 is not restored to the first state after flattening the bent steel bars at that location, the pressure rod 61 will be unable to flatten the bent steel bars at other locations. Although the pressure rod 61 has a tendency to return to the first state from the second state due to its own weight, the rotational friction at the rotatable connection between the pressure rod 61 and the transmission mechanism 2 prevents the pressure rod 61 from returning to the first state. Moreover, due to the gravity of the pressure-bearing rod 61 and the transmission mechanism 2 themselves, they cannot move upward without the action of external force. If construction workers are relied upon to move the pressure-bearing rod 61 and the transmission mechanism 2 upward, the burden on the construction workers will be increased and their work efficiency will be reduced.

[0043] Therefore, this device incorporates a reset assembly and a connecting rod assembly 5. When the operating handle 4 drives the transmission mechanism 2 downward, the two opposing pressure rods 61, due to the force exerted by the bent steel bar, rotate toward each other relative to the mounting plate 11 of the mounting bracket 1. Simultaneously, the connecting rod assembly 5 is compressed, and the connecting rod assembly 5 disengages from the reset mechanism 3. After the bent steel bar is flattened, the force applied to the operating handle 4 is removed. The reset assembly then drives the transmission mechanism 2 upward, and during this upward movement, the connecting rod assembly 5 connects with the reset mechanism 3, thereby transitioning the pressure rods 61 from the second state to the first state via the reset mechanism 3 for subsequent use.

[0044] The transmission mechanism 2 includes a first transmission rod 21 and a transmission seat 22. The first transmission rod 21 is slidingly connected to the mounting hole. The transmission seat 22 is arranged at the upper end of the first transmission rod 21 and is located above the mounting plate 11. The two pressure rods 61 of the force transmission assembly 6 are rotatably connected to the transmission seat 22.

[0045] See also Figure 1-4 The reset mechanism 3 includes an elastic member 31, a first stopper 32, a reversing assembly 33, and a width adjustment assembly 34. The elastic member 31 may be a spring, which is sleeved on the first transmission rod 21. The upper end of the elastic member 31 is connected to the lower side of the transmission seat 22, and the lower end is connected to the upper side of the mounting plate 11. The elastic force of the elastic member 31 is used to slide the first transmission rod 21 upward relative to the mounting plate 11. The first stopper 32 is provided on the first transmission rod 21, and its upper side is used to abut the lower side of the mounting plate 11 to limit the maximum upward displacement of the first transmission rod 21.

[0046] The reversing assembly 33 is disposed on the lower side of the mounting plate 11. The first stopper 32 is connected to the input end of the reversing assembly 33. The width adjustment assembly 34 is connected to the output end of the reversing assembly 33. The width adjustment assembly 34 is connected to the connecting rod assembly 5. The reversing assembly 33 is used to disengage the width adjustment assembly 34 from the connecting rod assembly 5 when the force transmission assembly 6 moves downward. In this way, when the force transmission assembly 6 moves downward, the width adjustment assembly 34 does not hinder the deformation of the connecting rod assembly 5 caused by the force applied by the bent steel bar to the pressure rod 61, so that the bent steel bar can be flattened. It is understood that the "width adjustment assembly 34 is disengaged from the connecting rod assembly 5" referred to in this embodiment means that the movement of the width adjustment assembly 34 does not drive the movement of the connecting rod assembly 5, or the movement of the connecting rod assembly 5 does not drive the movement of the width adjustment assembly 34. The width adjustment component 34 is used to adjust the distance between the two pressure-bearing rods 61 of the force transmission component 6 and the connecting ends of the bending steel bars, so that the distance between the two pressure-bearing rods 61 of the force transmission component 6 and the connecting ends of the bending steel bars can be increased or decreased, thereby being suitable for the flattening operation of the bending steel bars at different hinge joints.

[0047] Specifically, the reversing assembly 33 may include a first mounting seat 331, a first guide 332, a first rack 333, a gear 334, a second guide 335, and a second rack 336. The first mounting seat 331 is positioned on the lower side of the mounting plate 11. The first guide 332, the gear 334, and the second guide 335 are spaced apart on the first mounting seat 331, with the gear 334 positioned between the first and second guides 332, 335. The first and second guides 332, 335 may be guide rails that guide the sliding movement of the first and second racks 333, 336. The first rack 333 is slidably mounted on the first guide 332. The first rack 333 and the first stopper 32 may be connected by welding or other means. The first stopper 32 and the first transmission rod may also be connected by welding. The first rack 333 and the gear 334 are connected. The second rack 336 is slidably mounted on the second guide 335 and is connected to the width adjustment assembly 34 and the gear 334. In this way, through the action of the reversing assembly 33 , the movement direction of the width adjustment assembly 34 is opposite to the movement direction of the pressure rod 61 .

[0048] The width adjustment assembly 34 may include a first adjustment member 341, a second stopper 342, and a second transmission rod 343. The first adjustment member 341 includes a first hole 3411, a second hole 3412, and a third hole 3413 connecting the first hole 3411 and the second hole 3412. The first hole 3411 is internally threaded. The second stopper 342 may be a disc-shaped structure with external threads on its outer surface. The lower end of the second rack 336 is provided with a first connecting post, the outer surface of which is externally threaded. This allows the first hole 3411 of the first adjustment member 341 to be threadedly connected to the second stopper 342 and the second rack 336.

[0049] The upper end of the second transmission rod 343 is provided with a flange 3431, which is positioned within the third hole 3413. The lower end of the first transmission rod 21 extends through the second hole 3412 and is connected to the connecting rod assembly 5. The diameter of the third hole 3413 can be larger than the diameter of the flange 3431, and the depth of the third hole 3413 can be greater than the height of the flange 3431, thereby allowing the flange 3431 to rotate within the third hole 3413. The second retaining member 342 is positioned between the flange 3431 and the second rack 336, and is used to retain the flange 3431 within the third hole 3413. The diameter of the third hole 3413 can be less than or equal to the diameter of the first hole 3411, and the diameter of the second hole 3412 can be smaller than the diameter of the third hole 3413, thereby ensuring that the flange 3431 is retained within the third hole 3413. The upper end of the second limiting member 342 may be provided with a second connecting post so that the second limiting member 342 can be screwed into the first hole 3411 during assembly. The first connecting post may be provided with an accommodating hole for accommodating the second connecting post to ensure a threaded connection between the first adjusting member 341 and the first connecting post.

[0050] In this embodiment, since the first transmission rod 21 and the first adjusting member 341 are rotatably connected, and the first adjusting member 341 and the second rack 336 are threadedly connected, the depth of the first connecting column between the second rack 336 extending into the first hole 3411 can be changed by rotating the first adjusting member 341, thereby adjusting the distance between the two pressure rods 61.

[0051] The connecting rod assembly 5 may include two fixed seats 51 and two rotating rods 52. The fixed seats 51, rotating rods 52, and pressure-bearing rod 61 are arranged in a one-to-one correspondence. The lower end of the second transmission rod 343 is provided with a waist-shaped hole 3432. The fixed seat 51 is mounted on the pressure-bearing rod 61. One end of the rotating rod 52 is rotatably connected to the fixed seat 51, and the other end is positioned within the waist-shaped hole 3432 at the lower end of the second transmission rod 343 via a rotating shaft. In this embodiment, the angle formed between the two rotating rods 52 is arranged to face the bending steel bar.

[0052] The force transmission assembly 6 also includes a first position-limiting member 32 that is arranged in a one-to-one correspondence with the pressure-bearing rod 61. The first position-limiting member 32 includes a bent section 622, the upper end of which is provided with a mounting post, and the lower end of which is provided with a position-limiting foot 621. A first assembly hole is provided on the side of the mounting post, and a blind hole for accommodating the mounting post may be provided at the lower end of the pressure-bearing rod 61. A second assembly hole communicating with the blind hole is also provided at the lower end of the pressure-bearing rod 61. After the mounting post of the first position-limiting member 32 is set in the blind hole, the first assembly hole of the pressure-bearing rod 61 is aligned with the second assembly hole at the lower end of the pressure-bearing rod 61. Then, a pin or other structure is used to pass through the second assembly hole and then connect it to the first assembly hole, thereby achieving a detachable fixation of the mounting post of the first position-limiting member 32 to the pressure-bearing rod 61. Through this arrangement, different first limiters 32 can be replaced according to different application scenarios. For example, when the hinge joint between two adjacent prefabricated components is deep, the first limiter 32 with a longer mounting column can be selected and installed on the pressure rod 61 to ensure that the bending steel bars in the hinge joint can be flattened. Figure 1 The arc-shaped structure shown can accommodate steel bars of different diameters. In this embodiment, the limiting legs 621 of the two first limiting members 32 of the same force transmission assembly 6 are staggered. That is, in the extension direction of the prefabricated component, the bent section 622 of one first limiting member 32 extends toward the front of the prefabricated component, while the bent section 622 of the other first limiting member 32 extends toward the rear of the prefabricated component. This prevents the supporting legs of the two first limiting members 32 from colliding when the two pressure rods 61 move toward each other during use, thereby preventing the bent steel bars at the hinge joint from being flattened.

[0053] In this embodiment, the connecting rod assembly 5 and the force transmission assembly 6 are each provided in two groups, with the two groups of force transmission assemblies 6 spaced apart. The width adjustment assembly 34 also includes a third transmission rod 344, which is inserted into the waist-shaped hole 3432 of the second transmission rod 343. The third transmission rod 344 has two ends corresponding to a connecting rod assembly 5 and is rotatably connected to the two rotating rods 52 of the connecting rod assembly 5.

[0054] See also Figure 1-2 5. The transmission mechanism 2 also includes two fourth transmission rods 23, two spacing adjustment assemblies 24, and two second mounting seats 25, each corresponding to the force transmission assembly 6. One end of the fourth transmission rod 23 is connected to the transmission seat 22, and the other end is connected to the spacing adjustment assembly 24. The second mounting seat 25 is connected to the end of the spacing adjustment assembly 24 away from the fourth transmission rod 23. The two pressure rods 61 of the force transmission assembly 6 are rotatably mounted on the second mounting seat 25. The spacing adjustment assembly 24 is used to adjust the distance between the mounting seat and the transmission seat 22. The two rotating rods 52 of the connecting rod assembly 5 are slidably connected to the third transmission rod 344 in the axial direction of the third transmission rod 344. Specifically, the two rotating rods 52 are clearance-fitted with the third transmission rod 344. When the third transmission rod 344 moves up and down, it can drive the two rotating rods 52 to rotate. When the pressure rod 61 moves left and right, the two rotating rods 52 can slide in the axial direction of the third transmission rod 344, so that the spacing of the force transmission assembly 6 relative to the transmission seat 22 can be adjusted by the spacing adjustment assembly 24.

[0055] The spacing adjustment assembly 24 may include a second adjustment member 241, a first adjustment hole provided on the fourth transmission rod 23 away from the transmission base 22, and a second adjustment hole provided on the transmission base 22. One end of the second adjustment member 241 is threadedly connected to the first adjustment hole, and the other end is threadedly connected to the second adjustment hole. The threads at both ends of the second adjustment member 241 have the same rotation direction. Specifically, both ends of the second adjustment member 241 may be provided with external threads with the same rotation direction, and the first and second adjustment holes may be provided with internal threads with the same rotation direction, thereby achieving a threaded connection between the second adjustment member 241, the fourth transmission rod 23, and the transmission base 22.

[0056] Working principle: Initially, the pressure rod 61 is in the first state, and the third transmission rod 344 of the width adjustment assembly 34 abuts against the upper end of the waist-shaped hole 3432 of the second transmission rod 343.

[0057] After the device is transferred to the top of the hinged joint and fixed with the brake on the roller 13, press the operating handle 4 downward to make the operating handle 4 abut against the transmission seat 22. Then press the operating handle 4 downward to drive the force transmission assembly 6 and the connecting rod assembly 5 to move downward as a whole through the transmission seat 22, so that the pressure rod 61 abuts against the bending steel bar. At this time, the first transmission rod 21 moves downward synchronously and drives the width adjustment assembly 34 to move upward through the action of the reversing assembly 33. At this time, since the second transmission rod 343 is provided with a waist-shaped hole 3432, the third transmission rod 344 connected to the connecting rod assembly 5 slides downward relative to the waist-shaped hole 3432, so the third transmission rod 344 is disconnected from the upper end of the waist-shaped hole 3432.

[0058] The operating handle 4 is then pressed downwards. The rotation of the bent steel bar causes the two pressure-bearing rods 61 of the force transmission assembly 6 to rotate towards each other, thereby rotating the two movable rods of the connecting rod assembly 5, thereby driving the third transmission rod 344 upward. At this time, since the second transmission rod 343 is moving upward, the third transmission rod 344 does not abut against the upper end of the waist-shaped hole 3432.

[0059] After the bent steel bar is flattened, the force applied to the operating handle 4 is removed. The elastic member 31 then moves the transmission seat 22 upward, thereby driving the force transmission assembly 6 and the connecting rod assembly 5 upward. Furthermore, the width adjustment assembly 34 is driven downward via the reversing assembly 33. During the downward movement of the width adjustment assembly 34, the upper end of the waist-shaped hole 3432 of the second transmission rod 343 abuts the third transmission rod 344, thereby rotating the two movable rods of the connecting rod assembly 5. This causes the two pressure-bearing rods 61 of the same group of force transmission assembly 6 to rotate away from each other, returning the pressure-bearing rods 61 of the force transmission assembly 6 to the first state.

[0060] On the other hand, the present invention further provides a method for flattening hinged joint reserved steel bars, comprising the hinged joint reserved steel bar flattening device as described above, and further comprising:

[0061] S1: Place the device above the bent steel bars and fix it on the prefabricated component; specifically, push the mounting bracket 1 to place it above the hinge joint, and then use the brake on the roller 13 to fix it.

[0062] S2: Press the operating handle 4 downward to make the pressure-bearing rod 61 abut against the compression-bending steel bar, specifically, to make the supporting foot of the pressure-bearing rod 61 abut against the compression-bending steel bar.

[0063] S3: Continue to press the operating handle 4 downward to flatten the bent steel bar. After the bent steel bar is flattened, remove the force applied to the operating handle 4, then release the brake of the roller 13, and push the mounting bracket 1 to move to the next position to flatten the bent steel bars at the remaining positions.

[0064] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0065] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A hinge joint reserved steel bar flattening device, characterized in that: include: A mounting bracket, a transmission mechanism, a reset mechanism, an operating handle, at least one set of connecting rod assemblies and at least one set of force transmission assemblies; the connecting rod assemblies and the force transmission assemblies are arranged in a one-to-one correspondence; The transmission mechanism is arranged on the mounting bracket and can slide up and down relative to the mounting bracket; The force transmission assembly includes two pressure-bearing rods arranged at intervals, the lower ends of the pressure-bearing rods being used to abut against the bending steel bars, and the upper ends being rotatably connected to the transmission mechanism; the reset mechanism is provided on the transmission mechanism, and the connecting rod assembly is connected to the reset mechanism and is rotatably connected to the two pressure-bearing rods of the force transmission assembly arranged opposite to each other; The operating handle is rotatably connected to the mounting bracket, and the operating handle drives the transmission mechanism to move downward to drive the force transmission assembly to move downward, and during the downward movement of the force transmission assembly, the connecting rod assembly is disengaged from the reset mechanism; the reset mechanism drives the transmission mechanism to move upward to drive the force transmission assembly to move upward and drives the two pressure-bearing rods of the force transmission assembly to rotate oppositely through the connecting rod assembly.

2. The hinged joint reserved steel bar flattening device according to claim 1, characterized in that: The transmission mechanism includes a first transmission rod and a transmission seat, the mounting bracket includes a mounting plate provided with a mounting hole, the first transmission rod is slidably connected to the mounting hole, the transmission seat is provided at the upper end of the first transmission rod, and the two pressure-bearing rods of the force transmission assembly are rotatably connected to the transmission seat; The reset mechanism includes an elastic member, a first limiting member, a reversing assembly and a width adjustment assembly; the elastic member is sleeved on the first transmission rod, the upper end of which is connected to the lower side surface of the transmission seat, and the lower end is connected to the upper side surface of the mounting plate; the first limiting member is provided on the first transmission rod, and the upper side surface of the first limiting member is used to abut against the lower side surface of the mounting plate to limit the maximum upward displacement of the first transmission rod; the reversing assembly is provided on the lower side surface of the mounting plate, the first limiting member is connected to the input end of the reversing assembly, the width adjustment assembly is connected to the output end of the reversing assembly, and the width adjustment assembly is connected to the connecting rod assembly; The reversing assembly is used to disengage the width adjustment assembly from the connecting rod assembly when the force transmission assembly moves downward; The width adjustment assembly is used to adjust the distance between the two pressure-bearing rods of the force transmission assembly and the connection ends of the bending steel bars.

3. The hinged joint reserved steel bar flattening device according to claim 2, characterized in that: The reversing assembly includes a first mounting seat, a first guide, a first rack, a gear, a second guide and a second rack; the first mounting seat is arranged on the lower side of the mounting plate, the first guide, the gear and the second guide are arranged at intervals on the first mounting seat, and the gear is located between the first guide and the second guide; the first rack is slidably arranged on the first guide, and the first rack is connected to the first limit member and the gear; the second rack is slidably arranged on the second guide, and the second rack is connected to the width adjustment assembly and the gear.

4. The hinged joint reserved steel bar flattening device according to claim 3, characterized in that: The width adjustment assembly includes a first adjustment member, a second limiting member and a second transmission rod; The first adjusting member includes a first hole, a second hole, and a third hole communicating with the first hole and the second hole, and the second limiting member and the second rack are threadedly connected to the first hole; The upper end of the second transmission rod is provided with a flange, and the flange is located in the third hole. The lower end of the second transmission rod passes through the second hole and is connected to the connecting rod assembly. The second limiter is located between the flange and the second rack.

5. The hinged joint reserved steel bar flattening device according to claim 4, characterized in that: The connecting rod assembly includes two fixed seats and two rotating rods, and the fixed seats, the rotating rods and the pressure rods are arranged in a one-to-one correspondence; A waist-shaped hole is provided at the lower end of the second transmission rod, the fixing seat is provided on the pressure-bearing rod, one end of the rotating rod is rotatably connected to the fixing seat, and the other end is located in the waist-shaped hole at the lower end of the second transmission rod.

6. The hinged joint reserved steel bar flattening device according to claim 5, characterized in that: The force transmission assembly further includes a third limiting member provided in one-to-one correspondence with the pressure bearing rod; One end of the third limiting member is detachably connected to the end of the pressure rod away from the transmission mechanism, and the other end is provided with a limiting foot. The limiting feet of the two third limiting members of the same group of the force transmission assembly are staggered.

7. The hinged joint reserved steel bar flattening device according to claim 4, characterized in that: The connecting rod assembly and the force transmission assembly are respectively divided into two groups, and the two groups of force transmission assemblies are arranged at intervals; the width adjustment assembly also includes a third transmission rod, which is passed through the waist-shaped hole at the lower end of the second transmission rod, and its two ends correspond to a connecting rod assembly respectively, and are rotatably connected to the two rotating rods of the connecting rod assembly.

8. The hinged joint reserved steel bar flattening device according to claim 7, characterized in that: The transmission mechanism further includes two fourth transmission rods, two spacing adjustment assemblies and two second mounting seats arranged in a one-to-one correspondence with the force transmission assemblies; One end of the fourth transmission rod is connected to the transmission seat, and the other end is connected to the spacing adjustment assembly. The second mounting seat is connected to the end of the spacing adjustment assembly away from the fourth transmission rod; the two pressure-bearing rods of the force transmission assembly are rotatably arranged on the second mounting seat; The two rotating rods of the connecting rod assembly are slidably connected to the third transmission rod in the axial direction of the third transmission rod; the spacing adjustment assembly is used to adjust the distance between the mounting seat and the transmission seat.

9. The hinged joint reserved steel bar flattening device according to claim 8, characterized in that: The spacing adjustment assembly includes a second adjustment member, a first adjustment hole provided on an end of the fourth transmission rod away from the transmission seat, and a second adjustment hole provided on the transmission seat, one end of the second adjustment member being threadedly connected to the first adjustment hole, and the other end being threadedly connected to the second adjustment hole; The threads at both ends of the second adjusting member have the same rotation direction.

10. A method for flattening hinge joint reserved steel bars, characterized in that: The hinged joint reserved steel bar flattening device according to any one of claims 1 to 9 further comprises: S1: Place the device above the bending steel bar and fix it on the prefabricated component; S2: Press the operating handle downward to make the pressure rod contact the bending steel bar; S3: Continue to press the operating handle downward to flatten the bent steel bars.

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