Movable reducing machining device and method for grating steel frame

Abstract

The invention discloses a movable reducing machining device and method for a grating steel frame, and belongs to the technical field of grating steel frame tools. The movable reducing machining device for the grating steel frame can adapt to grating steel frames with different radiuses, and is high in machining efficiency and low in cost. According to the technical scheme, the movable variable-diameter machining device for the grating steel frame comprises a machining platform, movable limiting channels, main reinforcement clamps and end clamps, the multiple movable limiting channels are arranged in an arc shape and fixed to the machining platform, a set of main reinforcement clamps used for positioning four main reinforcements are installed in each movable limiting channel in a sliding mode, and the end clamps are fixed to the machining platform. The two L-shaped end clamps are placed on the machining platform and located on the two sides of the multiple movable limiting channels correspondingly. The grid steel frame welding fixture is used for welding machining of grid steel frames, the radius sizes of different grid steel frames can be adapted by adjusting the positions of the main rib fixtures in the movable limiting channels, the machining cost is reduced, and the machining quality and the machining efficiency are improved.

Description

Technical Field

[0001] The invention discloses a movable diameter-changing processing device and a processing method for a grid steel frame, belonging to the technical field of grid steel frame tooling. Background Art

[0002] With the rapid development of tunnel construction technology, tunnels are taking up an increasing proportion in highway and railway engineering construction. The proportion of grid steel frames in the initial support of tunnels is also gradually increasing. During the processing of grid steel frames, the processing of molds, the processing quality of the grids, and the processing size have brought difficulties to the builders. The processing molds of grid steel frames are generally processed using steel molds. The traditional method of welding steel plate slots on the steel sections to fix the main reinforcement is used for welding. After processing, it is difficult and cumbersome to remove the mold, and the workload is large. At the same time, a set of molds can only process grid steel frames of one size. When the size of the grid steel frame changes, the mold cannot be applied. It is necessary to prepare multiple sets of molds of different sizes, which is costly and inefficient. Therefore, how to solve the above problems and form a new tooling that can not only improve processing quality but also reduce processing costs and improve processing efficiency is a major problem facing builders. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a movable diameter-changing processing device and processing method for a grid steel frame, which can adapt to grid steel frames of different radii and has high processing efficiency and low cost.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a movable diameter-changing processing device for a grid steel frame, comprising a processing platform, a movable limiting groove, a main reinforcement clamp, and an end clamp; a plurality of movable limiting grooves are arranged in an arc shape and fixed on the processing platform; a set of main reinforcement clamps are slidably installed in each movable limiting groove, and a plurality of limiting devices are provided for positioning the main reinforcement clamps; two end clamps are placed on the processing platform, respectively located on both sides of the plurality of movable limiting grooves; The main reinforcement fixture includes two relatively arranged movable fixtures, and the movable fixture includes a base plate, a small wheel, a main reinforcement support plate and a rotating positioning rod. The base plate is horizontally arranged, and two small wheels are installed on each side. The main reinforcement support plate is vertically fixed on the longitudinal axis of the top surface of the base plate. An upper and lower main reinforcement notch are opened on one side of the main reinforcement support plate. The middle parts of the two rotating positioning rods are hinged on the main reinforcement support plate. The end of each rotating positioning rod is provided with a main reinforcement clamping groove that matches the corresponding main reinforcement notch. The main reinforcement support plate is also provided with a positioning device for fixing the angle of the two rotating positioning rods; The end fixture is an L-shaped plate, and four through holes for connecting two connecting angle steels at the end of the grid steel frame are opened on the vertical plate surface of the end fixture.

[0005] Furthermore, the centerlines of the multiple moving limit channels intersect at one point, and the multiple moving limit channels are all located on the same arc centered at the intersection of the centerlines.

[0006] Furthermore, the moving limit channel includes two channel side plates and two channel top plates. The two channel side plates are arranged in parallel, and a channel top plate of equal length is fixed to the top of each channel side plate, forming two opposite "匚"-shaped channels together with the processing platform; The small wheels on both sides of the bottom plate in the moving fixture are respectively located in the two "匚"-shaped channels.

[0007] Furthermore, the limiting device includes eight fixed stoppers and four movable stop rods. Four fixed stoppers are in a group, and the two groups of fixed stoppers are respectively fixed on the top surfaces of the two channel top plates. The four movable stop rods are respectively stuck between the two sides of the main reinforcement support plate and the corresponding fixed stoppers.

[0008] Furthermore, the main reinforcement notch is a triangular notch with a horizontal bottom and a circular arc at the bottom corner, and the main reinforcement bayonet is a triangular notch with a circular arc at the top corner.

[0009] Furthermore, the positioning device is a positioning pin. Pin holes are opened at corresponding positions on the two rotating positioning rods and the main reinforcement support plate, and the two positioning pins are respectively detachably installed in the corresponding pin holes.

[0010] Furthermore, in the moving fixture, the two rotating positioning rods are respectively located on both sides of the main reinforcement support plate.

[0011] A processing method for a grille steel frame includes the following steps: S1. Adjust the position of the moving fixture: According to the outer diameter of the to-be-processed grille steel frame, mark the outer diameter positions on the centerlines of the multiple moving limit channels, push the moving fixtures located outside in each moving limit channel so that the bottom corners of the main reinforcement notches on them are aligned with the outer diameter positions, and then push the moving fixtures located inside so that the distance between the main reinforcement notches on the two moving fixtures in the same moving limit channel is the width of the to-be-processed grille steel frame; S2. Fix the position of the moving fixture: Weld four fixed stoppers on each channel top plate according to the position of the main reinforcement support plate adjusted in S1, so that there are two fixed stoppers in front of and behind each main reinforcement support plate, and insert a movable stop rod between the front and rear sides of each main reinforcement support plate and the corresponding fixed stopper to fix the positions of the two moving fixtures; S3. Position the main reinforcement: Place the four bent main reinforcements into the main reinforcement notches in each moving fixture in sequence, rotate each rotating positioning rod so that the main reinforcement bayonets cooperate with the corresponding main reinforcement notches to clamp the main reinforcements. At this time, the pin holes on the rotating positioning rods are exactly aligned with the pin holes on the main reinforcement support plate, and insert the positioning pins to fix the rotating positioning rods; S4. Welding the splayed bars and connecting bars: Weld multiple splayed bars in the grid steel frame to be processed inside the four main bars, and bend multiple connecting bars with steel bars and weld them outside the four main bars; S5. Welding connection angle steel: Four connection angle steels are grouped in pairs and fixed to two end fixtures with bolts and nuts. The end fixtures are placed on both ends of the main reinforcement so that each connection angle steel contacts two main reinforcements and is welded together. S6. Demoulding of the grid steel frame: Hang the lifting rope on the grid steel frame and lift it upward until the lifting rope is just stressed. Release the two end fixtures from fixing the connecting angle steel. Pull out the positioning pin to release the limit on the rotating positioning rod. Pull out the movable blocking rod to release the limit on the movable fixture. Push the two movable fixtures in each movable limit groove to both sides to release the grid steel frame. Lift the grid steel frame with the lifting rope and move it to the repair welding area for repair welding. S7. Inspection report of grid steel frame: repeat the above steps S1 to S6. After the processed grid steel frames form a batch, they are reported to the quality inspector for inspection. After passing the self-inspection, they are reported to the supervision engineer for inspection. After acceptance, the qualified grid steel frame products are obtained.

[0012] Compared with the prior art, the present invention has the following beneficial effects.

[0013] 1. In the present invention, the main reinforcement clamp can move back and forth in the movable limiting groove, thereby adapting to the radius of different grid steel frames, eliminating the need to make grid steel frame molds of various radii. At the same time, the production cost of the present invention is low, which greatly reduces the processing cost of the grid steel frame.

[0014] 2. In the present invention, the rotating positioning rod and the main reinforcement support plate cooperate to reliably position the main reinforcement. In addition, the positioning of the connecting angle steel by the two end clamps ensures that the two connecting angle steels on the same side are on the same plane, and can also ensure the welding angle of the connecting angle steel, thereby improving the processing quality of the grid steel frame.

[0015] 3. In the present invention, the main reinforcement fixture includes two movable fixtures, which can move freely in the movable limit groove. Whether it is placing the main reinforcement into the main reinforcement groove during processing or taking out the grid steel frame after processing, it is very convenient and fast, thereby improving the processing efficiency of the grid steel frame.

[0016] In summary, the present invention reduces processing costs, improves processing quality and processing efficiency, and has a simple production process and easy operation, and has extremely wide promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments.

[0018] Figure 1It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the main reinforcement clamp in the present invention.

[0020] Figure 3 for Figure 2 Left view of .

[0021] Figure 4 It is a structural schematic diagram of the end fixture in the present invention.

[0022] Figure 5 for Figure 4 Left view of .

[0023] Figure 6 It is a structural schematic diagram of the mobile fixture in the present invention.

[0024] Figure 7 for Figure 6 Left view of .

[0025] Figure 8 It is a structural schematic diagram of the main reinforcement support plate in the present invention.

[0026] Figure 9 It is a structural schematic diagram of the rotary positioning rod in the present invention.

[0027] Figure 10 This is a schematic diagram of the main reinforcement clamp in the present invention in use.

[0028] Figure 11 This is a schematic diagram of the end fixture in use in the present invention.

[0029] Figure 12 for Figure 11 Left view of .

[0030] Figure 13 Flowchart of the processing method of the present invention.

[0031] In the figure: 1 is the processing platform, 2 is the movable limiting groove, 21 is the groove side plate, 22 is the groove top plate, 3 is the main reinforcement clamp, 4 is the end clamp, 5 is the limiting device, 51 is the fixed block, 52 is the movable block rod, 6 is the movable clamp, 61 is the bottom plate, 62 is the small wheel, 63 is the main reinforcement support plate, 64 is the rotating positioning rod, 65 is the main reinforcement groove, 66 is the main reinforcement clamp, 67 is the positioning device, 7 is the main reinforcement, 8 is the eight-shaped reinforcement, 9 is the connecting reinforcement, and 10 is the connecting angle steel. DETAILED DESCRIPTION

[0032] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope protected by the present invention.

[0033] The present invention provides the following embodiments.

[0034] As Figure 1 shown, a movable variable-diameter processing device for a grid steel frame of the present invention includes a processing platform 1, movable limiting channels 2, main bar clamps 3 and end clamps 4. A plurality of movable limiting channels 2 are arranged in an arc and fixed on the processing platform 1. A set of main bar clamps 3 is slidably installed in each movable limiting channel 2, and a plurality of limiting devices 5 for positioning the main bar clamps 3 are provided. Two end clamps 4 are placed on the processing platform 1 and are respectively located on both sides of the plurality of movable limiting channels 2; As Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 shown, the main bar clamp 3 includes two movable clamps 6 arranged oppositely. The movable clamp 6 includes a bottom plate 61, small wheels 62, a main bar support plate 63 and a rotary positioning rod 64. The bottom plate 61 is horizontally arranged, and two small wheels 62 are installed on each side. The main bar support plate 63 is vertically fixed on the longitudinal axis of the top surface of the bottom plate 61. Two upper and lower main bar slots 65 are formed on one side edge of the main bar support plate 63. The middle parts of two rotary positioning rods 64 are hinged on the main bar support plate 63. A main bar bayonet 66 matching with the corresponding main bar slot 65 is formed at the end of each rotary positioning rod 64. A positioning device 67 for fixing the angles of the two rotary positioning rods 64 is further provided on the main bar support plate 63; As Figure 4 、 Figure 5 shown, the end clamp 4 is an L-shaped plate, and four through holes 41 for connecting two connecting angles 10 at the end of the grid steel frame are formed on the vertical plate surface of the end clamp 4.

[0035] As Figure 1 shown, the center lines of the plurality of movable limiting channels 2 all intersect at one point, and the plurality of movable limiting channels 2 are all located on the same arc with the intersection point of the center lines as the center of the circle.

[0036] As Figure 2 、 Figure 3 shown, the movable limiting channel 2 includes two channel side plates 21 and two channel top plates 22. The two channel side plates 21 are arranged in parallel, and a channel top plate 22 of equal length is fixed on the top of each channel side plate 21, forming two opposite "匚"-shaped channels together with the processing platform 1; <0000The small wheels 62 on both sides of the bottom plate 61 in the movable fixture 6 are respectively located in two "C"-shaped channels.

[0037] As Figure 2 shown, the limiting device 5 includes eight fixed stoppers 51 and four movable stop bars 52. Four fixed stoppers 51 form a group, and the two groups of fixed stoppers 51 are respectively fixed on the top surfaces of the top plates 22 of the two channels. The four movable stop bars 52 are respectively stuck between the two sides of the main bar support plates 63 and the corresponding fixed stoppers 51.

[0038] The limiting device 5 can be preset according to the radius size of the commonly used grille steel frame, or can be set on-site according to the specific radius size of the grille steel frame during the processing of the grille steel frame.

[0039] As Figure 8 、 Figure 9 shown, the main bar notch 65 is a triangular notch with a horizontal bottom and a rounded bottom corner, and the main bar bayonet 66 is a triangular notch with a rounded top corner.

[0040] As Figure 6 、 Figure 8 、 Figure 9 shown, the positioning device 67 is a positioning pin. Pin holes are respectively opened on the two rotating positioning rods 64 and at the corresponding positions of the main bar support plates 63, and the two positioning pins are respectively detachably installed in the corresponding pin holes. <​​​​​​​​​​​​​In the movable fixture 6, the main reinforcement support plate 63 can be made of a 385.5×200×16mm steel plate, with the main reinforcement notch 65 cut out using a light cutting machine or other cutting equipment, and hinge holes and pin holes processed. The rotation positioning rod 64 can be made of a 500×60mm steel bar. The base plate 61 can be made of a 300×200×16mm steel plate, with two wheel axles welded to the bottom. The two ends of the wheel axles are rotatably mounted with small wheels 62. Here, the wheel axles can be made of 228mm long Φ16 steel bars, and the small wheels 62 can be made of 6203 bearings. The main reinforcement support plate 63 is welded along the longitudinal axis of the base plate 61, and the two rotation positioning rods 64 are hinged to the main reinforcement support plate 63. The movable fixture 6 is then completed. The end fixture 4 is made of an L-shaped plate with a thickness of 16mm, a height of 389mm, and a width of 208mm, on which four through holes are processed to connect to the connecting angle steel 10. In the movable limiting groove 2, the groove side plate 21 can adopt a 1500×42×16mm steel bar, and the groove top plate 22 can adopt a 1500×44×16mm steel bar. The groove side plate 21 and the groove top plate 22 are welded on one side, and the unwelded side is the limiting groove of the small wheel 62.

[0045] In the present invention, the grid steel frame includes main reinforcement 7, S-shaped reinforcement 8, connecting reinforcement 9 and connecting angle steel 10. The four main reinforcements 7 are arranged in parallel, and multiple S-shaped reinforcements 8 are fixed at intervals inside the four main reinforcements 7. Multiple square ring connecting reinforcements 9 are fixed at intervals outside the four main reinforcements 7. Two connecting angle steels 10 are fixed at each end of the four main reinforcements 7, and each connecting angle steel 10 is fixed to two main reinforcements 7.

[0046] like Figure 1 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 As shown, the present invention provides a method for processing a grid steel frame, comprising the following steps: S1, adjust the position of the movable fixture 6: according to the outer diameter of the grid steel frame to be processed, mark the outer diameter position on the center line of multiple movable limit slots 2, push the movable fixture 6 located on the outside of each movable limit slot 2 so that the bottom angle of the main rib notch 65 on it is aligned with the outer diameter position, and then push the movable fixture 6 located on the inside so that the distance between the main rib notches 65 on the two movable fixtures 6 in the same movable limit slot 2 is the width of the grid steel frame to be processed; S2. Fix the position of the movable fixture 6: Weld four fixed blocks 51 onto each channel top plate 22 according to the position of the main reinforcement support plate 63 adjusted in S1, so that each main reinforcement support plate 63 has two fixed blocks 51 at the front and rear. Insert a movable blocking rod 52 between the front and rear sides of each main reinforcement support plate 63 and the corresponding fixed block 51 to fix the position of the two movable fixtures 6; S3. Positioning the main reinforcement 7: Place the four bent main reinforcements into the main reinforcement notches 65 of each movable fixture 6 in sequence, and rotate each rotary positioning rod 64 so that the main reinforcement notches 66 engage with the corresponding main reinforcement notches 65 to lock the main reinforcement 7. At this time, the pin holes on the rotary positioning rods 64 are aligned with the pin holes on the main reinforcement support plates 63. Insert the positioning pins to secure the rotary positioning rods 64. S4, welding the splayed bars 8 and the connecting bars 9: welding the multiple splayed bars 8 in the grid steel frame to be processed to the inside of the four main bars 7, and bending the multiple connecting bars 9 with steel bars and welding them to the outside of the four main bars 7; S5. Welding connection angle steels 10: Four connection angle steels 10 are fixed to two end fixtures 4 with bolts and nuts in pairs. The end fixtures 4 are placed at both ends of the main reinforcement 7 so that each connection angle steel 10 contacts two main reinforcements 7 and is welded together. S6. Demolding the grid steel frame: Hang the lifting rope on the grid steel frame and lift it up until the lifting rope is just stressed. Release the two end fixtures 4 from fixing the connecting angle steel 10. Pull out the positioning pin to release the limit on the rotating positioning rod 64. Pull out the movable blocking rod 52 to release the limit on the movable fixture 6. Push the two movable fixtures 6 in each movable limit groove 2 to both sides to make the grid steel frame come out. Lift the grid steel frame with the lifting rope and move it to the repair welding area for repair welding. S7. Inspection report of grid steel frame: repeat the above steps S1 to S6. After the processed grid steel frames form a batch, they are reported to the quality inspector for inspection. After passing the self-inspection, they are reported to the supervision engineer for inspection. After acceptance, the qualified grid steel frame products are obtained.

[0047] Thus, in the present invention, only the position of the movable fixture 6 in the movable limiting groove 2 needs to be adjusted to adapt to grid steel frames of different radii. The structure is simple, the operation is convenient, and it is conducive to promotion.

[0048] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A movable diameter-changing processing device for a grid steel frame, characterized in that: It includes a processing platform (1), movable limiting channels (2), main reinforcement clamps (3) and end clamps (4). Multiple movable limiting channels (2) are arranged in an arc and fixed on the processing platform (1). A set of main reinforcement clamps (3) is slidably installed in each movable limiting channel (2), and multiple limiting devices (5) for positioning the main reinforcement clamps (3) are provided. Two end clamps (4) are placed on the processing platform (1) and are located on both sides of the multiple movable limiting channels (2) respectively; The main reinforcement clamp (3) includes two relatively arranged movable clamps (6). The movable clamp (6) includes a bottom plate (61), small wheels (62), a main reinforcement support plate (63) and a rotating positioning rod (64). The bottom plate (61) is horizontally arranged, and two small wheels (62) are installed on each side. The main reinforcement support plate (63) is vertically fixed on the longitudinal axis of the top surface of the bottom plate (61). Two main reinforcement slots (65) are opened on one side edge of the main reinforcement support plate (63) from top to bottom. The middle parts of two rotating positioning rods (64) are hinged on the main reinforcement support plate (63). A main reinforcement bayonet (66) matching the corresponding main reinforcement slot (65) is opened at the end of each rotating positioning rod (64). A positioning device (67) for fixing the angles of the two rotating positioning rods (64) is also provided on the main reinforcement support plate (63); The end clamp (4) is an L-shaped plate, and four through holes (41) for connecting two connecting angle steels (10) at the end of the grid steel frame are opened on the vertical plate surface of the end clamp (4).

2. The movable diameter-changing processing device for a grid steel frame according to claim 1, characterized in that: The center lines of the multiple movable limiting channels (2) all intersect at one point, and the multiple movable limiting channels (2) are all located on the same arc with the intersection point of the center lines as the center of the circle.

3. A movable diameter-changing processing device for a grid steel frame according to claim 1 or 2, characterized in that: The movable limiting channel (2) includes two channel side plates (21) and two channel top plates (22). The two channel side plates (21) are arranged in parallel, and an equal-length channel top plate (22) is fixed at the top of each channel side plate (21), forming two opposite "匚"-shaped channels together with the processing platform (1); [[ID= 4. The movable diameter-changing processing device for a grid steel frame according to claim 3, characterized in that: ​ 5. The movable diameter-changing processing device for a grid steel frame according to claim 1 or 2, characterized in that: ​ 6. The movable diameter-changing processing device for a grid steel frame according to claim 1 or 2, characterized in that: ​ 7. The movable diameter-changing processing device for a grid steel frame according to claim 1 or 2, characterized in that: ​ 8. A method for processing a grid steel frame using the processing device according to claim 1, characterized in that ​ S1, adjusting the position of the movable fixture (6): according to the outer diameter of the grid steel frame to be processed, the outer diameter position is marked on the center line of the plurality of movable limit slots (2), and the movable fixture (6) located on the outside of each movable limit slot (2) is pushed so that the bottom angle of the main rib notch (65) on it is aligned with the outer diameter position, and then the movable fixture (6) located on the inside is pushed so that the spacing between the main rib notches (65) on the two movable fixtures (6) in the same movable limit slot (2) is the width of the grid steel frame to be processed; S2. Fix the position of the movable fixture (6): Four fixed blocks (51) are welded on each groove top plate (22) according to the position of the main reinforcement support plate (63) adjusted in S1, so that there are two fixed blocks (51) at the front and rear of each main reinforcement support plate (63), and a movable block rod (52) is inserted between the front and rear sides of each main reinforcement support plate (63) and the corresponding fixed block (51) to fix the position of the two movable fixtures (6); S3, positioning the main reinforcement (7): Place the four main reinforcements with good curvature into the main reinforcement slots (65) in each movable fixture (6) in turn, rotate each rotating positioning rod (64), so that the main reinforcement slots (66) cooperate with the corresponding main reinforcement slots (65) to clamp the main reinforcement (7), at this time, the pin holes on the rotating positioning rod (64) are exactly aligned with the pin holes on the main reinforcement support plate (63), and insert the positioning pin to fix the rotating positioning rod (64); S4, welding the splayed reinforcement (8) and the connecting reinforcement (9): welding the multiple splayed reinforcements (8) in the grid steel frame to be processed to the inside of the four main reinforcements (7), bending the multiple connecting reinforcements (9) with steel bars and welding them to the outside of the four main reinforcements (7); S5. Welding connection angle steels (10): Four connection angle steels (10) are fixed to two end fixtures (4) by bolts and nuts in pairs. The end fixtures (4) are placed at both ends of the main reinforcement (7) so that each connection angle steel (10) contacts the two main reinforcements (7) and is welded together; S6. Demolding the grid steel frame: Hang the lifting rope on the grid steel frame and lift it up until the lifting rope is just stressed. Release the two end fixtures (4) from fixing the connecting angle steel (10). Pull out the positioning pin to release the limit of the rotating positioning rod (64). Pull out the movable blocking rod (52) to release the limit of the movable fixture (6). Push the two movable fixtures (6) in each movable limit groove (2) to both sides to make the grid steel frame come out. Lift the grid steel frame with the lifting rope and move it to the repair welding area for repair welding. S7. Inspection report of grid steel frame: repeat the above steps S1 to S6. After the processed grid steel frames form a batch, they are reported to the quality inspector for inspection. After passing the self-inspection, they are reported to the supervision engineer for inspection. After acceptance, the qualified grid steel frame products are obtained.

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