Universal jig for forming curved steel mesh

Abstract

The present invention discloses a universal mold for forming an arc-shaped steel mesh, comprising a base frame, two limiting side plates, two supporting frames, and an extrusion preform frame. The two limiting side plates are oppositely arranged on opposite sides of the base frame and are respectively fixedly connected to the base frame; a steel mesh forming area is formed between the two limiting side plates; an arc-shaped supporting convex strip is detachably connected to the inner side of the limiting side plates facing the steel mesh forming area. The two supporting frames are located between the two limiting side plates and are oppositely arranged on the other opposite sides of the base frame. The bottom of the supporting frame is pivotally connected to the base frame. A telescopic rod is hinged on the side of the supporting frame away from the steel mesh forming area, and the bottom end of the telescopic rod is hinged to the base frame. The extrusion preform frame is detachably placed in the steel mesh forming area, and the opposite ends of the extrusion preform frame are respectively supported by the two supporting frames, and the top and bottom surfaces of the extrusion preform frame are both arc-shaped structures. It can process arc-shaped steel meshes of various specifications, thereby saving tooling costs.

Description

Technical Field

[0001] The invention relates to the technical field of jigs, and in particular to a universal jig for forming an arc-shaped steel mesh. Background Art

[0002] The towers of the cable towers of the sea bridges are cast by reinforced concrete, wherein the cross-section is generally a variable cross-section structure, that is, the curvature of each height is generally different, and due to its large size, the steel cage needs to be pieced together in sections. In this way, it is necessary to manufacture arc-shaped steel meshes of various specifications, and then enclose the outer periphery of the tower column to form a ring-shaped structure. Therefore, in the prior art, it is necessary to use multiple types of molds to complete the manufacture of arc-shaped steel meshes. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a universal jig for forming arc-shaped steel meshes, which can process arc-shaped steel meshes of various specifications, thereby saving tooling costs.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A universal jig for forming an arc-shaped steel mesh, comprising a base frame, two limiting side plates, two support frames, and an extrusion preform frame;

[0006] The two limiting side plates are oppositely arranged on opposite sides of the base frame and are respectively fixedly connected to the base frame; a steel mesh forming area is formed between the two limiting side plates; an arc-shaped supporting convex strip is detachably connected to the inner side surface of the limiting side plate facing the steel mesh forming area, the middle part of the arc-shaped supporting convex strip is concave downward, and the arc-shaped supporting convex strip is used to support the arc-shaped steel mesh;

[0007] The two support frames are located between the two limiting side plates and are oppositely arranged on the other two opposite sides of the base frame. The two support frames and the two limiting side plates jointly enclose the steel mesh forming area; the bottom of the support frame is pivotally connected to the base frame so that the bottom of the support frame can swing along the vertical plane to adjust the distance between the tops of the two support frames; a telescopic rod is hingedly connected to the side of the support frame away from the steel mesh forming area, and the bottom end of the telescopic rod is hingedly connected to the base frame;

[0008] The extrusion preform frame is detachably placed in the steel mesh forming area, and opposite ends of the extrusion preform frame are supported by two support frames respectively. The top surface and the bottom surface of the extrusion preform frame are both arc structures.

[0009] Preferably, the limiting side plate is provided with a plurality of the arc-shaped supporting ridges, the curvatures of the plurality of the arc-shaped supporting ridges connected to the same limiting side plate are different and are arranged at intervals along the direction of gravity; the spacing between two arc-shaped supporting ridges which are respectively arranged on two limiting side plates and have the same height is the supporting width, and the plurality of the supporting widths gradually decrease along the direction of gravity.

[0010] Preferably, the limiting side plates are arranged to be inclined relative to the vertical plane, so that the distance between the two limiting side plates gradually increases from bottom to top along the height direction.

[0011] Preferably, a plurality of inclined support rods are fixedly connected to the outer side surface of the limiting side plate away from the steel mesh forming area, and the bottom of the inclined support rods is fixedly connected to the base frame.

[0012] Preferably, the extrusion preform is provided in plurality, the curvature of the top surface of the extrusion preform is the same as the curvature of one of the arc-shaped supporting convex strips, and the curvature of the bottom surface of the extrusion preform is the same as the curvature of one of the arc-shaped supporting convex strips.

[0013] Preferably, the support frame is a frame structure formed by fixedly connecting a plurality of rods.

[0014] Preferably, the arc-shaped supporting convex strip is connected to the limiting side plate by screws.

[0015] Preferably, the telescopic rod includes a first screw, a threaded sleeve, and a second screw arranged in sequence along the direction of gravity; the two ends of the threaded sleeve are respectively provided with a first internal thread and a second internal thread that are rotated oppositely; the first screw is inserted into the threaded sleeve and connected to the first internal thread, and the second screw is inserted into the threaded sleeve and connected to the second internal thread.

[0016] Preferably, each of the support frames is connected to a plurality of the telescopic rods, and the plurality of telescopic rods are arranged at intervals; and the support frame is pivotally connected to the telescopic rods via its own waist-shaped hole.

[0017] Preferably, the base frame is fixedly connected by a plurality of I-beams to form a frame structure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The arc-shaped steel mesh is limited by two limiting side plates to avoid the phenomenon of movement and falling during the pressing process of the arc-shaped steel mesh. The arc-shaped support convex strips are detachably connected to the limiting side plates, and the arc-shaped support convex strips are used as the reference and load-bearing body to guide the positioning and installation of the extrusion preform and as the forming mold of the steel mesh.

[0020] 2. The steel mesh is supported by an extrusion preform so that the steel mesh can be pressed by the pressing equipment and deformed in a direction.

[0021] 3. By arranging the arc-shaped support convex strips and the limiting side plates to be detachably connected, it is possible to replace arc-shaped support convex strips and extrusion preforms of different specifications to be used for forming arc-shaped steel meshes of different curvatures, thereby avoiding the large-scale use of molds of different curvatures to reduce tooling costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a universal jig for forming an arc-shaped steel mesh according to the present invention.

[0023] In the figure: 1, base frame; 11, I-beam; 2, limiting side plate; 3, support frame; 4, steel mesh forming area; 5, arc-shaped supporting convex strip; 6, telescopic rod; 61, first screw rod; 62, threaded sleeve; 63, second screw rod; 7, oblique support rod. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element, or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element, or there may be an element centered thereon. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Figure 1 A universal jig for forming an arc-shaped steel mesh according to a preferred embodiment of the present invention is shown, comprising a base frame 1, two limiting side plates 2, two support frames 3, and an extrusion preform frame (not shown in the figure).

[0028] Two limiting side plates 2 are oppositely arranged on opposite sides of the base frame 1 and are respectively fixedly connected to the base frame 1. A steel mesh forming area 4 is formed between the two limiting side plates 2. An arc-shaped supporting convex strip 5 is detachably connected to the inner side surface of the limiting side plate 2 facing the steel mesh forming area 4, and the middle part of the arc-shaped supporting convex strip 5 is concave downward, and the arc-shaped supporting convex strip 5 is used to support the arc-shaped steel mesh (i.e., the workpiece).

[0029] The two support frames 3 are located between the two limiting side plates 2 and are oppositely arranged on the other two opposite sides of the base frame 1. The two support frames 3 and the two limiting side plates 2 jointly enclose the steel mesh forming area 4. The bottom of the support frame 3 is pivotally connected to the base frame 1 so that the bottom of the support frame 3 can swing along the vertical plane to adjust the distance between the tops of the two support frames 3 to support the extrusion preform. The side of the support frame 3 away from the steel mesh forming area 4 is hinged with a telescopic rod 6, and the bottom end of the telescopic rod 6 is hinged to the base frame 1. The support frame 3 can be driven to swing by adjusting the length of the telescopic rod 6.

[0030] The extrusion preform frame is detachably placed in the steel mesh forming area 4, and the opposite ends of the extrusion preform frame are supported by two support frames 3 respectively. The top surface and the bottom surface of the extrusion preform frame are both arc structures.

[0031] During operation, the extrusion preform is first placed in the steel mesh forming area 4 and supported by the support frame 3, which is equivalent to using the extrusion preform as a mold to form the steel mesh. Among them, the installation position of the extrusion preform is adjusted to the same curvature based on the arc-shaped support rib 5; that is, the telescopic rod 6 is then adjusted to swing the support frame 3 to a suitable angle to adjust the height of the extrusion preform, so that the extrusion preform and the arc-shaped support rib 5 have the same curvature and height, and then the steel mesh is hoisted to the top of the extrusion preform. Most importantly, the opposite sides of the steel mesh are positioned and supported by one of the arc-shaped support ribs 5, and then the steel mesh is pressed by the pressing equipment until the steel mesh is formed into an arc-shaped steel mesh. When it is necessary to form a steel mesh of another specification, just replace the arc-shaped support rib 5 of another curvature and the extrusion preform of another curvature, then retain the other components, and adjust the angle of the support frame 3 to the target angle. It should be noted that the steel mesh should have a certain curvature before being formed by the universal mold for forming the arc-shaped steel mesh, and the purpose of the universal mold for forming the arc-shaped steel mesh is to further press it.

[0032] Obviously, by limiting the arc-shaped steel mesh by two limiting side plates 2, the phenomenon of movement and falling during the pressing of the arc-shaped steel mesh can be avoided. By detachably connecting the arc-shaped support ridges 5 to the limiting side plates 2, the arc-shaped support ridges 5 are used as a reference and load-bearing body to guide the positioning and installation of the extrusion preform and as a forming mold for the steel mesh. The steel mesh is supported by the extrusion preform, so that the steel mesh can be pressed by the pressing equipment and deformed in a direction. By setting the arc-shaped support ridges 5 to be detachably connected to the limiting side plates 2, the arc-shaped support ridges 5 and the extrusion preforms of different specifications can be replaced to be used for forming arc-shaped steel meshes of different curvatures, thereby avoiding the large-scale use of molds of different curvatures to reduce tooling costs.

[0033] Preferably, the limiting side plate 2 is provided with a plurality of arc-shaped support ridges 5, and the curvatures of the plurality of arc-shaped support ridges 5 connected to the same limiting side plate 2 are different and are arranged at intervals along the direction of gravity; the spacing between two arc-shaped support ridges 5 respectively arranged on two limiting side plates 2 and of equal height is the support width, and the plurality of support widths gradually decrease along the direction of gravity. In this arrangement, based on the narrower support width at the bottom and the larger support width at the top, the preforming work of each arc-shaped steel mesh does not interfere with each other, that is, when forming an arc-shaped steel mesh of a certain specification, it is not necessary to remove the arc-shaped support ridges 5 of other specifications, thereby saving the workload of installation and disassembly. Among them, as the optimal design method for controlling the support width, preferably, the limiting side plate 2 is inclined relative to the plumb plane so that the spacing between the two limiting side plates 2 gradually increases from bottom to top along the height direction. In this arrangement, the width of each arc-shaped support ridge 5 can be set to an equal width structure, thereby omitting the work of measuring the width of the steel mesh forming area 4 to design the width of the arc-shaped support ridge 5. That is to say, as an alternative arrangement, a structure in which multiple support widths gradually decrease along the direction of gravity can be realized by designing the width of the top arc-shaped support ridge 5 to be narrower and the width of the bottom arc-shaped support ridge 5 to be wider.

[0034] Preferably, in order to enhance the strength of the limiting side plate 2 , a plurality of inclined support rods 7 are fixedly connected to the outer side surface of the limiting side plate 2 away from the steel mesh forming area 4 , and the bottom of the inclined support rods 7 is fixedly connected to the base frame 1 .

[0035] Preferably, there are multiple extrusion preforms, the curvature of the top surface of the extrusion preform is the same as the curvature of one (i.e., horizontally adjacent) arc-shaped support ridges 5, and the curvature of the bottom surface of the extrusion preform is the same as the curvature of one (i.e., horizontally adjacent) arc-shaped support ridges 5. Obviously, with this arrangement, multiple arc-shaped steel meshes can be pressed and formed in one forming action. Specifically, a steel mesh is placed for each extrusion preform placed from bottom to top, so that multiple arc-shaped steel meshes can be pressed at the same time.

[0036] Preferably, the support frame 3 is a frame structure formed by fixing a plurality of rods to reduce its weight for easy hoisting and avoid crushing the support frame 3.

[0037] Preferably, the arc-shaped supporting ridge 5 is connected to the limiting side plate 2 by screws, or the limiting side plate 2 can support the arc-shaped supporting ridge 5 by setting a groove, etc.

[0038] Preferably, the telescopic rod 6 comprises a first screw 61, a threaded sleeve 62, and a second screw 63 arranged in sequence along the gravity direction; the two ends of the threaded sleeve 62 are respectively provided with a first internal thread and a second internal thread that rotate in opposite directions; the first screw 61 penetrates into the threaded sleeve 62 and is connected to the first internal thread, and the second screw penetrates into the threaded sleeve 62 and is connected to the second internal thread. Obviously, in this arrangement, the length of the telescopic rod 6 can be adjusted by rotating the threaded sleeve 62. It can be understood that, as an alternative arrangement, the telescopic rod 6 can be replaced by a cylinder or an electric push rod.

[0039] Preferably, in order to improve stability, each support frame 3 is connected to a plurality of telescopic rods 6, and the plurality of telescopic rods 6 are arranged at intervals; at this time, in order to enable a single worker to complete the adjustment of the telescopic rod 6, the support frame 3 is pivotally connected to the telescopic rod 6 through its own waist-shaped hole. At this time, based on the avoidance space of the waist-shaped hole, a single worker can adjust the telescopic rod 6 one by one, and other telescopic rods 6 will not be obstructed.

[0040] Preferably, the base frame 1 is fixedly connected by a plurality of I-beams 11 to form a frame structure.

[0041] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A universal mold for forming an arc-shaped steel mesh, characterized in that: The invention comprises a base frame (1), two limiting side plates (2), two supporting frames (3), and an extrusion preform frame; the two limiting side plates (2) are arranged oppositely on two opposite sides of the base frame (1), and are respectively fixedly connected to the base frame (1); a steel mesh forming area (4) is formed between the two limiting side plates (2); an arc-shaped supporting convex strip (5) is detachably connected to the inner side surface of the limiting side plate (2) facing the steel mesh forming area (4), the middle part of the arc-shaped supporting convex strip (5) is recessed downward, and the arc-shaped supporting convex strip (5) is used to support the arc-shaped steel mesh; the two supporting frames (3) are located between the two limiting side plates (2), and are arranged oppositely on the other opposite sides of the base frame (1), and the two supporting frames (3) are arranged oppositely on the other opposite sides of the base frame (1). The support frame (3) and the two limiting side plates (2) jointly enclose the steel mesh forming area (4); the bottom of the support frame (3) is pivotally connected to the base frame (1) so that the bottom of the support frame (3) can swing along the vertical plane to adjust the distance between the tops of the two support frames (3); a telescopic rod (6) is hingedly connected to the side of the support frame (3) away from the steel mesh forming area (4), and the bottom end of the telescopic rod (6) is hingedly connected to the base frame (1); the extrusion preform frame is detachably placed in the steel mesh forming area (4), and the opposite ends of the extrusion preform frame are respectively supported by the two support frames (3), and the top surface and the bottom surface of the extrusion preform frame are both curved structures; The limiting side plate (2) is provided with a plurality of arc-shaped supporting convex strips (5), the curvatures of the plurality of arc-shaped supporting convex strips (5) connected to the same limiting side plate (2) are different and are arranged at intervals along the direction of gravity; the spacing between two arc-shaped supporting convex strips (5) of the same height and respectively arranged on two limiting side plates (2) is the supporting width, and the plurality of supporting widths gradually decrease along the direction of gravity.

2. The universal jig for forming an arc-shaped steel mesh according to claim 1, characterized in that: The limiting side plates (2) are arranged obliquely relative to the vertical plane, so that the distance between the two limiting side plates (2) gradually increases from bottom to top along the height direction.

3. The universal jig for forming an arc-shaped steel mesh according to claim 2, characterized in that: A plurality of inclined support rods (7) are fixedly connected to the outer side surface of the limiting side plate (2) away from the steel mesh forming area (4), and the bottom of the inclined support rods (7) is fixedly connected to the base frame (1).

4. The universal jig for forming an arc-shaped steel mesh according to claim 1, characterized in that: The extrusion preform is provided in plurality, the curvature of the top surface of the extrusion preform is the same as the curvature of one of the arc-shaped supporting convex strips (5), and the curvature of the bottom surface of the extrusion preform is the same as the curvature of one of the arc-shaped supporting convex strips (5).

5. The universal jig for forming an arc-shaped steel mesh according to claim 4, characterized in that: The support frame (3) is a frame structure formed by fixedly connecting a plurality of rods.

6. The universal jig for forming an arc-shaped steel mesh according to claim 1, characterized in that: The arc-shaped supporting convex strip (5) is connected to the limiting side plate (2) via screws.

7. The universal jig for forming an arc-shaped steel mesh according to claim 1, characterized in that: The telescopic rod (6) comprises a first screw rod (61), a threaded sleeve (62), and a second screw rod (63) which are arranged in sequence along the direction of gravity; the two ends of the threaded sleeve (62) are respectively provided with a first internal thread and a second internal thread which are rotated in opposite directions; the first screw rod (61) penetrates into the threaded sleeve (62) and is connected to the first internal thread, and the second screw rod penetrates into the threaded sleeve (62) and is connected to the second internal thread.

8. The universal jig for forming an arc-shaped steel mesh according to claim 7, characterized in that: Each of the support frames (3) is connected to a plurality of telescopic rods (6), and the plurality of telescopic rods (6) are arranged at intervals; the support frame (3) is pivotally connected to the telescopic rod (6) via its own waist-shaped hole.

9. The universal jig for forming an arc-shaped steel mesh according to claim 1, characterized in that: The base frame (1) is fixedly connected by a plurality of I-beams (11) to form a frame structure.

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