Arc bending mechanism and super large mesh arc bending equipment and application method thereof

Abstract

The present invention discloses an arc bending mechanism applied to super large mesh arc bending equipment, comprising a steel bar grabbing mechanism, a mesh support rod and a power mechanism, wherein the steel bar grabbing mechanism is connected to the mesh support rod and is used to grab the steel bar mesh to be bent, and the steel bar grabbing mechanism is connected to the power mechanism and can be extended and retracted under the drive of the power mechanism to bend and deform the steel bar mesh. The present invention can effectively realize the bending and forming of the steel bar flat mesh of the bridge tower, improve efficiency and save manpower.

Description

Technical Field

[0001] The present invention relates to the field of steel mesh bending, and more specifically, to a bending mechanism, and an ultra-large mesh bending device and application method thereof. Background Art

[0002] The componentization of steel bars is one of the future directions of bridge construction. Through the mechanized production of segmented meshes, they are assembled into components in the construction area, and finally hoisted onto the tower as a whole for docking, ultimately realizing the componentization of steel bars for bridge towers. This can improve the quality of steel bar binding, shorten the construction period, and effectively alleviate industry development problems such as labor shortage.

[0003] Mechanized production of steel mesh is the basis for the componentization of bridge tower construction. It is generally divided into two steps. First, make an oversized flat mesh, and then bend the flat steel mesh to form a spatial structure. However, for different bridge towers, the cross-sectional shapes of the tower columns are different, and the bending mechanisms are different. For the production of steel parts with arc-shaped tower columns, the flat mesh must first be bent into an arc shape. Because the oversized diameter steel mesh is heavy, large in size, and has greater flexibility. Traditional steel bending is done by bending a single steel bar, and then manually assembling it, which is inefficient, time-consuming, and labor-intensive.

[0004] Therefore, a mechanical device is needed to bend the steel mesh into an arc-shaped mesh. Summary of the invention

[0005] In order to achieve these purposes and other advantages according to the present invention, a preferred embodiment of the present invention provides an arc bending mechanism applied to super-large mesh arc bending equipment, including a steel bar grabbing mechanism, a mesh support rod and a power mechanism, the steel bar grabbing mechanism is connected to the mesh support rod, and is used to grab the steel mesh to be bent, the steel bar grabbing mechanism is connected to the power mechanism, and can be extended and retracted under the drive of the power mechanism to bend and deform the steel mesh, and the power mechanism is an electric winch.

[0006] According to a preferred embodiment of the present invention, the arc bending mechanism applied to the super-large mesh arc bending equipment, one end of the mesh support rod is connected to the steel bar grabbing mechanism, and the other end is rotatably hinged to the turntable, and the mesh support rod can be rotated along the hinge point between the turntable and the mesh support rod as the axis, and the angle of the mesh support rod can be adjusted by rotating the mesh support rod.

[0007] According to a preferred embodiment of the present invention, the arc bending mechanism applied to super-large mesh arc bending equipment, the turntable is equipped with a fixed bracket, one end of a retractable rod is connected to the mesh support rod, and the other end is connected to the fixed bracket, and the rotation angle of the mesh support rod is controlled by adjusting the length of the retractable rod.

[0008] According to a preferred embodiment of the present invention, the bending mechanism applied to the super-large mesh bending equipment, the telescopic rod, the turntable and the fixed bracket, and the steel bar grabbing mechanism are respectively located on both sides of the mesh support rod.

[0009] According to a preferred embodiment of the present invention, the arc bending mechanism applied to the super-large mesh arc bending equipment, the turntable is set on a slide, the slide can slide along the track, the slide is located on one side of the mesh support rod and on the same side as the retractable rod, the turntable and the fixed bracket.

[0010] According to a preferred embodiment of the present invention, the arc bending mechanism applied to the super-large mesh arc bending equipment, the steel bar grabbing mechanism is connected to the power mechanism through a steel wire rope, one end of the steel wire rope is connected to the steel bar grabbing mechanism, and the other end passes through the mesh support rod and then connected to the power mechanism, and the steel wire rope can shuttle back and forth along the thickness direction of the mesh support rod.

[0011] Another embodiment of the present invention further provides an ultra-large mesh bending device, comprising a base and a plurality of bending mechanisms, wherein the base is semicircular, and the bending mechanisms are distributed at intervals along the curved surface of the base;

[0012] The arc bending mechanism is the arc bending mechanism described in any one of claims 1-6.

[0013] According to a preferred embodiment of the present invention, in the ultra-large mesh bending equipment, the steel bar grabbing mechanism 10 is located on a side of the mesh support rod away from the pedestal.

[0014] Another embodiment of the present invention further provides an application method of an ultra-large mesh bending equipment, comprising the following steps:

[0015] Step 1: temporarily fix the steel mesh, and a plurality of the bending mechanisms are spaced around the arc surface of the pedestal, and the steel grabbing mechanism in the bending mechanism is located on the side of the mesh support rod away from the pedestal, and the mechanical structure pulls the steel mesh to cause initial deformation;

[0016] Step 2: grab the steel mesh with the steel grabbing mechanism, start the power mechanism to drive the steel grabbing mechanism to retract, and drive the steel mesh to move to both sides, so that the steel mesh is gradually deformed;

[0017] Step 3: As the steel bar grabbing mechanism gradually retracts, the steel mesh gradually approaches the mesh support rod and clings to the mesh support rod tightly. After clinging tightly, the steel bars on the steel mesh are tightly held;

[0018] Step 4: According to the bending parameters of the steel mesh, the inclination angle of the mesh support rod is adjusted by adjusting the length of the telescopic rod, so that the top opening and bottom buckle sizes of the steel mesh are different after bending.

[0019] According to a preferred embodiment of the present invention, the application method of the ultra-large mesh bending equipment further includes:

[0020] Step 5: According to the designed arc size of the steel mesh, driven by the hydraulic cylinder, the slides in all the arc bending mechanisms move in one direction;

[0021] Step 6. When the arc of the steel mesh reaches the designed size, remove the arc bending mechanism to make the size of the steel mesh meet the design requirements.

[0022] According to a preferred embodiment of the present invention, the application method of the ultra-large mesh bending equipment further comprises, before step 1:

[0023] Temporarily fix the middle part of the mesh on the mesh support, the mesh support includes two pairs of plates hinged at one end, and a hydraulic rod arranged between the two, the fixed end of the hydraulic rod is connected to one of the pairs of plates, and the telescopic end is connected to the other pair of plates, at this time, the mesh support is in a folded state, and the pair of plates connected to the fixed end of the hydraulic rod is placed on the ground;

[0024] The hydraulic rod is extended so that the pair of plates connected to the telescopic end of the hydraulic rod rotates along the other pair of plates until the pair of plates connected to the telescopic end of the hydraulic rod is perpendicular to the ground.

[0025] The present invention includes at least the following beneficial effects: The present invention can effectively realize the bending and forming of the steel mesh of the bridge tower. The steel mesh of the bridge tower is large in size, and the traditional construction method is time-consuming and labor-intensive. The large flat straight mesh is bent as a whole into a circular arc mesh with vertical contraction by machinery. The mesh can have a certain angle vertically. After bending and forming, the bottom bending radius is greater than the top bending radius. The radius of the bent mesh can also be adjusted to adapt to the bending of meshes with different bending radii within a certain range. It can improve efficiency and save manpower.

[0026] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a single arc bending mechanism in the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the arc bending device in the present invention.

[0029] Figure 3 It is a schematic diagram of the structure of the mesh support in the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0032] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0033] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0034] like Figure 1-2 As shown, a preferred embodiment of the present invention provides an ultra-large diameter mesh bending equipment, comprising a pedestal 11 and a plurality of bending mechanisms, wherein the pedestal 11 is semicircular, and the bending mechanisms are distributed at intervals along the arc surface of the pedestal 11;

[0035] The arc bending mechanism includes a steel bar grabbing mechanism 10, a mesh support rod 6 and a power mechanism 7. The steel bar grabbing mechanism 10 is connected to the mesh support rod 6 and is used to grab the steel bar mesh to be bent. The steel bar grabbing mechanism 10 is connected to the power mechanism 7 and can be extended and retracted under the drive of the power mechanism 7 to bend and deform the steel bar mesh.

[0036] In the above-mentioned embodiment, all the bending mechanisms are located between the steel mesh and the pedestal 11, and the mesh support rod 6 is connected by the steel grabbing mechanism 10, and then the steel grabbing mechanism 10 is controlled to retract, so as to pull the steel mesh back to achieve bending deformation of the steel mesh. By controlling the retraction degree of the steel grabbing mechanism 10, the bending degree of the steel mesh can be controlled.

[0037] The specific structure of the steel bar grabbing mechanism 10 is not limited, as long as it can grab and connect the steel bar mesh. For the convenience of construction, it can be a grab hook.

[0038] Since the cross-sectional dimensions of the bridge tower change with the increase of elevation, the arc radius and main reinforcement slope of the bent mesh also change. In order to better realize the bending of the curvature of the steel mesh, the mesh support rod 6 is improved so that its angle is variable. Combined with the above-mentioned steel bar grabbing mechanism 10, it can be extended and retracted under the drive of the power mechanism 7, so that the steel mesh is bent and deformed with a variable curvature and inner diameter. Specifically, one end of the mesh support rod 6 is connected to the steel bar grabbing mechanism 10, and the other end can be rotatably hinged to the turntable 3. The mesh support rod 6 can be rotated along the hinge point between the turntable 3 and the mesh support rod 6 as the axis, and the angle of the mesh support rod 6 can be adjusted by rotating the mesh support rod 6.

[0039] The inclination angle of the mesh support rod 6 can be adjusted manually or driven by equipment. The following provides a specific implementation method for the mesh support rod 6 to achieve rotation and adjustable inclination angle. A fixed bracket 4 is installed on the turntable 3, and one end of a retractable rod 5 is connected to the mesh support rod, and the other end is connected to the fixed bracket 4. By adjusting the length of the retractable rod 5, the rotation angle of the mesh support rod 6 can be controlled.

[0040] In another embodiment, in order to take into account the balance of the entire bending process and facilitate construction, the following settings are made: the telescopic rod 5, the turntable 3, the fixed bracket 4, and the steel bar grabbing mechanism 10 are respectively located on both sides of the mesh support rod 6.

[0041] In another embodiment, the turntable 3 is disposed on a slide 2 , and the slide 2 can slide along the track 1 . The slide 2 is located on one side of the mesh support rod 6 and on the same side as the telescopic rod 5 , the turntable 3 and the fixed bracket 4 .

[0042] The steel bar grabbing mechanism 10 is connected to the power mechanism 7 through a steel wire rope 9. One end of the steel wire rope is connected to the steel bar grabbing mechanism 10, and the other end passes through the mesh support rod 6 and is then connected to the power mechanism. The steel wire rope 9 can shuttle back and forth along the thickness direction of the mesh support rod 6. The power mechanism 7 is an electric winch, and its rotation can conveniently and quickly advance and retract the steel wire rope. The steel bar grabbing mechanism 10 is located on the side of the mesh support rod 6 away from the pedestal 11.

[0043] Considering that if the rigid traction of the steel mesh is directly performed by the tilting angle of the mesh support rod 6 and the rotation of the electric winch to pull the steel bar grabbing mechanism 10, it will cause uneven local force on the steel mesh and uneven local deformation. In response to this phenomenon, the present application has made the following improvements: the turntable 3 can rotate around the slide 2 within a certain angle range, and the two can achieve resistance-free sliding and rotation. In this way, when the steel mesh is bent and pulled by the tilting angle of the mesh support rod 6 and the rotation of the electric winch to pull the steel bar grabbing mechanism 10, if the force is uneven, it will naturally drive the turntable 3 around the slide 2 until the force is uniform, so that the mesh is evenly stressed and bent into an arc without causing local uneven deformation.

[0044] It should be noted that the steel bar grabbing mechanism 10 can be more than one, the specific number is not shown, and it is preferably multiple. The multiple steel bar grabbing mechanisms 10 are respectively distributed along the height direction of the mesh support rod 6, so that the steel mesh can be grabbed over a large range. For the steel mesh, the force is more uniform, the bending is more uniform, and subsequent bending is performed. If there is only one, it will cause uneven force during the bending and pulling process.

[0045] Another embodiment of the present invention further provides an application method of an ultra-large diameter mesh bending equipment, comprising the following steps:

[0046] Step 0: temporarily fix the middle part of the steel mesh on the mesh support 11, wherein the mesh support 11 includes two pairs of plates 111 hinged at one end, and a hydraulic rod 112 arranged between the two, wherein the fixed end of the hydraulic rod 112 is connected to one of the pairs of plates, and the telescopic end is connected to the other pair of plates 111, at which time the mesh support 112 is in a folded state, and the pair of plates 111 connected to the fixed end of the hydraulic rod is placed on the ground;

[0047] The hydraulic rod 112 is extended so that the pair of plates connected to the telescopic end of the hydraulic rod rotates along the other pair of plates until the pair of plates connected to the telescopic end of the hydraulic rod is perpendicular to the ground.

[0048] Step 1: temporarily fix the steel mesh 12, and a plurality of the bending mechanisms are spaced around the arc surface of the pedestal 11, and the steel grabbing mechanism 10 in the bending mechanism is located on the side of the mesh support rod 6 away from the pedestal 11, and the steel mesh 12 is manually pulled to cause initial deformation;

[0049] Step 2: Use the steel bar grabbing mechanism 10 to grab the steel mesh, start the power mechanism 7 to drive the steel bar grabbing mechanism 10 to retract, and drive the steel mesh 12 to move to both sides, so that the steel mesh 12 is gradually deformed; the power mechanism 7 is an electric car.

[0050] When the electric winch is pulled, the mesh support rod 6 can rotate with the turntable 3, so that the steel mesh is evenly stressed and bent into an arc without causing local uneven deformation.

[0051] Step 3: As the steel bar grabbing mechanism 10 gradually retracts, the steel mesh 12 gradually approaches the mesh support rod 6 and is closely attached to the mesh support rod 6. After being closely attached, a clamping mechanism 8 is provided on the mesh support rod 6 to hold the steel bars on the steel mesh 12 tightly.

[0052] Step 4: According to the bending parameters of the steel mesh 12, the inclination angle of the mesh support rod 6 is adjusted by adjusting the length of the telescopic rod 5, so that the top opening and bottom buckle sizes of the steel mesh 12 are different after bending.

[0053] Step 5: According to the designed arc size of the steel mesh 12, under the drive of the hydraulic cylinder, the slides in the multiple arc bending mechanisms move in one direction at different speeds, the slide speed of the middle arc bending mechanism is low, and the slide speed increases as it moves to the sides;

[0054] Step 6: When the arc of the steel mesh 12 reaches the designed size, the middle slide does not move, and the slides on both sides continue to move a small distance to form a bend, so that after the mesh is removed from the bending mechanism, the steel mesh 12 rebounds so that its size meets the design requirements.

[0055] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An arc bending mechanism used in arc bending equipment for super large mesh, characterized in that: It includes a steel bar grabbing mechanism, a mesh support rod and a power mechanism. The steel bar grabbing mechanism is connected to the mesh support rod and is used to grab the steel bar mesh to be bent. The steel bar grabbing mechanism is connected to the power mechanism and can be extended and retracted under the drive of the power mechanism to bend and deform the steel bar mesh. The power mechanism is an electric winch. One end of the mesh support rod is connected to the steel bar grabbing mechanism, and the other end is rotatably hinged to the turntable. The mesh support rod can be rotated along the hinge point between the turntable and the mesh support rod as an axis, and the mesh support rod can be rotated to adjust its angle; A fixed bracket is installed on the rotating disk, one end of a telescopic rod is connected to the mesh support rod, and the other end is connected to the fixed bracket, and the rotation angle of the mesh support rod is controlled by adjusting the length of the telescopic rod; The retractable rod, the rotating disk, the fixed bracket, and the steel bar grabbing mechanism are respectively located on both sides of the mesh support rod; The super large mesh bending equipment comprises a pedestal and a plurality of bending mechanisms, wherein the pedestal is semicircular, and the bending mechanisms are distributed at intervals along the curved surface of the pedestal; The turntable is arranged on a slide, and the slide can slide along a track. The slide is located on one side of the mesh support rod and on the same side as the telescopic rod, the turntable and the fixed bracket.

2. The arc bending mechanism used for the ultra-large mesh arc bending equipment according to claim 1, characterized in that: The steel bar grabbing mechanism is connected to the power mechanism via a steel wire rope, one end of the steel wire rope is connected to the steel bar grabbing mechanism, and the other end passes through the mesh support rod and is then connected to the power mechanism, and the steel wire rope can shuttle back and forth along the thickness direction of the mesh support rod.

3. A super large mesh bending equipment, characterized in that: It comprises a pedestal and a plurality of bending mechanisms, wherein the pedestal is semicircular, and the bending mechanisms are distributed at intervals along the curved surface of the pedestal; The arc bending mechanism is the arc bending mechanism described in claim 1.

4. The super large mesh bending equipment according to claim 3, characterized in that: The steel bar grabbing mechanism is located on a side of the mesh support rod away from the pedestal.

5. An application method of the super large mesh bending equipment as described in any one of claims 3-4, characterized in that: The following steps are involved: Step 1: temporarily fix the steel mesh, and a plurality of the bending mechanisms are spaced around the arc surface of the pedestal, and the steel grabbing mechanism in the bending mechanism is located on the side of the mesh support rod away from the pedestal, and the mechanical structure pulls the steel mesh to cause initial deformation; Step 2: grab the steel mesh with the steel grabbing mechanism, start the power mechanism to drive the steel grabbing mechanism to retract, and drive the steel mesh to move to both sides, so that the steel mesh is gradually deformed; Step 3: As the steel bar grabbing mechanism gradually retracts, the steel mesh gradually approaches the mesh support rod and clings to the mesh support rod tightly. After clinging tightly, the steel bars on the steel mesh are tightly held; Step 4: According to the bending parameters of the steel mesh, the inclination angle of the mesh support rod is adjusted by adjusting the length of the telescopic rod, so that the top and bottom sizes of the steel mesh are different after bending; Step 5: According to the designed arc size of the steel mesh, driven by the hydraulic cylinder, the slides in all the arc bending mechanisms move in one direction; Step 6. When the arc of the steel mesh reaches the designed size, remove the arc bending mechanism to make the size of the steel mesh meet the design requirements.

6. The application method of the super large mesh bending equipment according to claim 5 is characterized in that: Before the step 1, the method further includes: Temporarily fix the middle part of the steel mesh on the mesh support, the mesh support includes two pairs of plates hinged at one end, and a hydraulic rod arranged between the two, the fixed end of the hydraulic rod is connected to one of the pairs of plates, and the telescopic end is connected to the other pair of plates. At this time, the mesh support is in a folded state, and the pair of plates connected to the fixed end of the hydraulic rod is placed on the ground; The hydraulic rod is extended so that the pair of plates connected to the telescopic end of the hydraulic rod rotates along the other pair of plates until the pair of plates connected to the telescopic end of the hydraulic rod is perpendicular to the ground.

Images