Movable mould for manufacturing tunnel grating steel frame

Abstract

The invention belongs to the technical field of tunnel grating steel frame manufacturing, and particularly relates to a movable mould for manufacturing a tunnel grating steel frame, which comprises a grating mould, three positioning clamps are welded on the surface of the grating mould in an arc-shaped distribution mode at equal intervals, and two movable bottom frames with universal trundles are symmetrically welded at the bottom of the grating mould. An arc-shaped bottom plate is welded between the two movable bottom frames, and the outer walls of the two sides of the center end of the bottom plate are each provided with a center lateral support. When the driving motor rotates, the driving motor and the lifting disc can generate a threaded structure, when the lifting disc moves upwards, the reinforcing mechanism can be pushed to move upwards, and when the reinforcing mechanism moves upwards, the lifting frame can be driven to move upwards. When the lifting frame moves upwards, the manufactured tunnel grating steel frame can be pushed upwards through the transverse pushing mechanism. When the pneumatic push cylinder is started, the telescopic end of the pneumatic push cylinder pushes the supporting plate to move towards one side along the bottom of the supporting plate. When the supporting plate moves, the tunnel grating steel frame on the surface of the supporting plate can be completely pushed out of the positioning clamp.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel grid steel frame manufacturing, and particularly relates to a movable mold for manufacturing a tunnel grid steel frame. BACKGROUND

[0002] In the industrialized manufacturing process of the tunnel grid steel frame, the positioning and welding of the steel bars are core processes. First, four prefabricated arc-shaped main bars are precisely clamped into the clamping grooves of a special mold, and the groove curvature of the mold is completely matched with the curvature of the steel bars to ensure that the structural accuracy of the formed steel frame meets the design requirements of the tunnel support. After the main bars are firmly fixed, workers need to hold welding equipment to weld multiple steel connectors at the preset nodes between the four main bars. After multiple welding processes, the four arc-shaped main bars and the connectors form a complete tunnel grid steel frame.

[0003] Due to the use of high-strength threaded steel or profiled steel for the grid steel frame, combined with the weight of the connectors, the overall weight of a single steel frame unit generally reaches several hundred kilograms. Under normal operating conditions, even if two or three adult workers coordinate their efforts, it is difficult to lift the steel frame smoothly, which brings inconvenience to the subsequent unloading operation from the mold. Moreover, since the main bars are in an arc-shaped structure and are tightly clamped in the grooves of the mold, there is a large contact friction force between the steel frame and the mold, and the arc-shaped structure causes the force points to be dispersed, so workers cannot find a stable force application position. When unloading, four to six workers are often distributed around the mold and simultaneously apply force at different parts of the steel frame, overcoming not only the weight of the steel frame itself but also the biting resistance between the arc-shaped main bars and the clamping grooves of the mold.

[0004] In summary, when facing the need to unload the tunnel grid steel frame from the mold, repeated adjustments of the force application angle and intensity are required, which takes a long time and indirectly affects the overall production efficiency of the tunnel grid steel frame. SUMMARY

[0005] The present application aims to provide a movable mold for manufacturing a tunnel grid steel frame, which aims to solve the problem of the need for repeated adjustments of the force application angle and intensity when unloading the tunnel grid steel frame from the mold, which takes a long time and indirectly affects the overall production efficiency of the tunnel grid steel frame.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a movable mold for manufacturing a tunnel grid steel frame, comprising a grid mold, the surface of the grid mold is arc-shaped and three positioning clamps are welded at equal intervals, two mobile chassis with universal casters are symmetrically welded at the bottom of the grid mold, an arc-shaped bottom plate is welded between the two mobile chassis, and a central lateral support is installed on each outer wall of the two sides of the center end of the bottom plate.

[0007] The surface of the grid jig is symmetrically provided with two groups of grooves, the inner parts of the two groups of grooves are movably connected with the bottoms on the two sides of the horizontal pushing mechanism, the bottoms on the two ends of the horizontal pushing mechanism are movably connected with the tops on the two sides of the lifting frame, and the inside of the lifting frame is provided with a reinforcing mechanism.

[0008] In order to push the lifted tunnel grid steel frame to one side and completely remove the tunnel grid steel frame from the positioning clamp, as the movable jig for manufacturing the tunnel grid steel frame, preferably, the horizontal pushing mechanism comprises two supporting plates, the bottoms of each of the supporting plates are symmetrically provided with two sliding strips, one end of each of the sliding strips is welded with the outer wall of one end of a side strip, and the opposite ends of the two side strips are welded with the outer walls on the two sides of the U-shaped piece.

[0009] One mounting seat is welded with the outer walls on the two ends of one side of the lifting frame, a pneumatic pushing cylinder is mounted on the surface of the mounting seat, one extending block is welded with the outer walls on the two ends of the other side of the lifting frame, and two sliding grooves are symmetrically formed in the surface of each of the extending blocks.

[0010] The two sliding strips on the bottom of the supporting plate are accurately opposite to the openings of the two sliding grooves on the corresponding extending blocks, the bottom of one end of the supporting plate is located on the same horizontal plane as the bottom of the telescopic end of the pneumatic pushing cylinder, the supporting plate is located between the three positioning clamps, and the opening end of the U-shaped piece is oppositely arranged with the positioning clamps at the center.

[0011] In order to make the lifting frame move along the guide track of the guide plate during the lifting process, as the movable jig for manufacturing the tunnel grid steel frame, preferably, two groups of guide plates are symmetrically welded on the surface of the bottom plate, a recess is formed in the top end of each of the guide plates, and a butt plate is movably connected between the two guide plates.

[0012] In order to enhance the firmness of the lifting frame as a whole, so that the lifting frame can effectively lift the manufactured tunnel grid steel frame upwards, as the movable jig for manufacturing the tunnel grid steel frame, preferably, the reinforcing mechanism comprises a supporting frame, the four end heads of the supporting frame are respectively inclined and supported at the four corner angles of the lifting frame, a limiting column is welded with the outer walls on the two sides of the center end of the supporting frame, the bottom of the limiting column extends out of the bottom surface of the supporting frame, and a lifting disc is clamped between the extension ends of the two limiting columns.

[0013] The interior of the lifting disc is screwed with a screw rod, the bottom of the screw rod is engaged with the output end of a driving motor, the top of the driving motor is installed at the bottom of the central lateral support, the top end of the screw rod is movably penetrated through the central end of the support frame, and the top end of the screw rod is movably engaged with the bottom of the grid mold through a bearing embedded in the interior of the bottom side of the grid mold.

[0014] The bottom of the screw rod extends downward through the bottom plate, and the screw rod and the bottom plate are movably engaged through a bearing.

[0015] In order to enable the lifting disc to move vertically upward through the thread between the lifting disc and the screw rod, as a movable mold for manufacturing a tunnel grid steel frame, preferably, the bottom of the lifting disc is movably abutted on the bottom of the support frame, semicircular clamps are arranged on both sides of the lifting disc, and the lifting disc is movably clamped with the limiting column through the semicircular opening.

[0016] In order to enable the lifting frame to have sufficient rising space, thereby being able to lift the manufactured tunnel grid steel frame from the positioning clamp, as a movable mold for manufacturing a tunnel grid steel frame, preferably, the lifting frame is installed in the gap between the grid mold and the bottom plate, and the distance between the reinforcing mechanism and the bottom of the grid mold is greater than the clamping distance between the upper and lower sides of the positioning clamp.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] When the tunnel grid steel frame is welded in the grid mold and the positioning clamp, the driving motor is started. When the driving motor rotates, the thread structure is generated with the lifting disc. Since the limiting column limits the lifting disc, the lifting disc moves vertically upward. When the lifting disc moves upward, the reinforcing mechanism is pushed to move upward. When the reinforcing mechanism moves upward, the lifting frame is driven to move upward. When the lifting frame moves upward, the manufactured tunnel grid steel frame is pushed upward through the horizontal pushing mechanism, and finally the tunnel grid steel frame is separated from the clamping structure of the positioning clamp;

[0019] Then, the pneumatic push cylinder is started, and the telescopic end of the pneumatic push cylinder pushes the supporting plate to move to one side along the bottom of the supporting plate. When the supporting plate moves, the tunnel grid steel frame on the surface of the supporting plate is completely pushed out from the positioning clamp. Therefore, the manufactured tunnel grid steel frame can be conveniently taken out from the positioning clamp through the above structure in actual use, so as to improve the unloading efficiency of the tunnel grid steel frame on the mold, thereby improving the overall work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0021] Figure 1 The overall assembly structure schematic diagram provided for the embodiment of the present application.

[0022] Figure 2 The grid jig top view connection structure schematic diagram provided for the embodiment of the present application.

[0023] Figure 3 The bottom view structure schematic diagram provided for the embodiment of the present application.

[0024] Figure 4 The lifting frame connection structure schematic diagram provided for the embodiment of the present application.

[0025] Figure 5 The lifting disc connection structure schematic diagram provided for the embodiment of the present application.

[0026] Figure 6 The reinforcing mechanism structure schematic diagram provided for the embodiment of the present application.

[0027] Figure 7 The lateral pushing mechanism bottom view structure schematic diagram provided for the embodiment of the present application.

[0028] Figure 8 The lifting disc structure schematic diagram provided for the embodiment of the present application.

[0029] Figure 9 The grid jig side view structure schematic diagram provided for the embodiment of the present application.

[0030] Figure 10 The grid jig bottom view connection structure schematic diagram provided for the embodiment of the present application.

[0031] Figure 11 The mobile chassis partial bottom view structure schematic diagram provided for the embodiment of the present application.

[0032] In the figure: 1, grid jig; 11, groove; 2, mobile chassis; 3, positioning clamp; 4, bottom plate; 41, guide plate; 42, notch; 5, center lateral support; 6, lateral pushing mechanism; 61, supporting plate; 62, slide bar; 63, side bar; 64, U-shaped piece; 7, lifting frame; 71, mounting seat; 72, pneumatic pushing cylinder; 73, extension block; 74, sliding groove; 75, butt joint plate; 8, reinforcing mechanism; 81, supporting frame; 82, limiting column; 83, lifting disc; 84, screw rod; 85, bearing; 86, driving motor. DETAILED DESCRIPTION

[0033] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] Please refer to Figures 1-11 The present application provides the following technical solutions: a movable mold for manufacturing a tunnel lattice steel frame, comprising a lattice mold 1, three positioning clamps 3 are symmetrically welded on the surface of the lattice mold 1 at equal intervals, two movable chassis 2 with universal casters are symmetrically welded at the bottom of the lattice mold 1, an arc-shaped bottom plate 4 is welded between the two movable chassis 2, and a center lateral support 5 is installed on the outer wall of each of the two sides of the center end of the bottom plate 4.

[0035] The universal casters at the bottom of the movable chassis 2 are manganese steel supports and polyurethane wheel bodies, so that the universal casters at the bottom of the movable chassis 2 can bear the overall weight and also maintain stable movement function. The specific universal caster can refer to the model YTOP Zhuoye 24 Zhitai MC.

[0036] During use, four steel bars are respectively clamped into the clamping parts corresponding to the three positioning clamps 3, so that the workers can weld connecting pieces between the fixed four steel bars. After welding, an arc-shaped tunnel lattice steel frame is formed, which is arranged at the related reinforcing point in the tunnel during construction, and after the concrete is poured and solidified, the tunnel lattice steel frame can be installed inside the tunnel.

[0037] The bottom of the movable chassis 2 is provided with two universal casters with locking structures, the lattice mold 1 is pushed, and the lattice mold 1 is very conveniently moved to the position to be set by the movable chassis 2. At the same time, the center lateral supports 5 on both sides of the bottom plate 4 are supported on the ground during use, thereby improving the stability of the lattice mold 1 during use.

[0038] The surface of the lattice mold 1 is symmetrically provided with two groups of grooves 11, the inner parts of the two groups of grooves 11 are respectively movably connected with the bottoms on both sides of the horizontal pushing mechanism 6, the bottoms of both ends of the horizontal pushing mechanism 6 are respectively movably connected with the top ends on both sides of the lifting frame 7, and the inside of the lifting frame 7 is provided with the reinforcing mechanism 8.

[0039] Preferably, the horizontal pushing mechanism 6 comprises two supporting plates 61, two sliding strips 62 are symmetrically and fixedly installed at the bottom of each supporting plate 61, one end of each sliding strip 62 is respectively welded with one end of one side strip 63, and the opposite ends of the two side strips 63 are welded on the outer walls on both sides of the U-shaped piece 64.

[0040] Two mounting seats 71 are welded on the outer walls of the two ends of one side of the lifting frame 7, pneumatic push cylinders 72 are mounted on the surfaces of the mounting seats 71, the pneumatic push cylinders 72 are connected with external gas supply units in use, and an extension block 73 is welded on the outer wall of the other end of the lifting frame 7.

[0041] The two sliding strips 62 at the bottom of the supporting plate 61 are precisely opposite to the openings of the two sliding grooves 74 on the extension block 73, one end of the supporting plate 61 is located at the same horizontal plane as the bottom of the telescopic end of the pneumatic push cylinder 72, the supporting plate 61 is located between the three positioning clamps 3, and the opening end of the U-shaped piece 64 is opposite to the positioning clamp 3 at the center.

[0042] In specific use, when the height of the lifting frame 7 is lifted, the pneumatic push cylinders 72 work. The pneumatic push cylinders 72 push the bottom of the supporting plate 61, and the bottom of the supporting plate 61 moves to drive the sliding strips 62 to move. In this way, one end of the sliding strip 62 enters the two sliding grooves 74 on the extension block 73, so that the supporting plate 61 can push the tunnel grating steel frame manufactured on the surface to one side according to the set track;

[0043] The supporting plate 61 moves to drive the corresponding side strips 63 to move, and the two side strips 63 move to drive the U-shaped piece 64 to move at the same time. Due to the U-shaped structure of the U-shaped piece 64, the U-shaped piece 64 moves to wrap the positioning clamp 3 at the center inside, so as not to affect the normal movement track of the horizontal pushing mechanism 6.

[0044] The two pneumatic push cylinders 72 in the scheme are connected with a special cylinder linkage controller in use, so that the synchronization of the two pneumatic push cylinders 72 in movement can be ensured in use.

[0045] Preferably, two groups of guide plates 41 are symmetrically welded on the surface of the bottom plate 4, one notch 42 is formed at the top end of each group of guide plates 41, and a butt plate 75 is movably connected between each group of guide plates 41. The two ends of the butt plate 75 are welded with the inner walls of one end of the lifting frame 7.

[0046] In specific use, two vertical plates are integrally arranged on the inner walls of the two ends of the lifting frame 7, and a sliding port matched with the size of the sliding strip 62 is arranged at the top of each vertical plate. The two ends of the butt plate 75 are also fixedly connected with the lifting frame 7 through welding with the vertical plates.

[0047] Preferably, the reinforcing mechanism 8 comprises a support frame 81, four end heads of the support frame 81 are obliquely supported at four corner portions of the lifting frame 7, a limiting column 82 is welded on the outer walls of the two sides of the central end of the support frame 81, the bottom of the limiting column 82 extends out of the bottom surface of the support frame 81, and a lifting disc 83 is connected between the extension ends of the two limiting columns 82.

[0048] The inside of the lifting disc 83 is screwed with a screw rod 84, the bottom of the screw rod 84 is engaged with the output end of the driving motor 86, the top of the driving motor 86 is installed at the bottom of the central lateral support 5, the top end of the screw rod 84 is movably penetrated through the center end of the support frame 81, the top end of the screw rod 84 is movably engaged with the bottom of the grid mold 1 through the bearing 85, and the bearing 85 is embedded in the inside of the bottom side of the grid mold 1.

[0049] The bottom of the screw rod 84 extends downward through the bottom plate 4, and the screw rod 84 and the bottom plate 4 are movably connected through the bearing 85.

[0050] In specific use, the driving motor 86 is started, the driving motor 86 drives the screw rod 84 to rotate, and the screw rod 84 rotates directionally between the bottom of the grid mold 1 and the bottom plate 4 through the two bearings 85. When the bottom plate 4 rotates, the lifting disc 83 is driven to rotate, and the lifting disc 83 moves vertically upward along with the rotation of the screw rod 84 because the lifting disc 83 is limited by the two limiting columns 82.

[0051] When the lifting disc 83 moves upward, the reinforcing mechanism 8 is pushed to move upward, and the reinforcing mechanism 8 drives the lifting frame 7 to move upward when moving upward. When the lifting frame 7 moves upward, the horizontal pushing mechanism 6 is driven to move upward, so that the two supporting plates 61 on the horizontal pushing mechanism 6 push the manufactured tunnel grid steel frame upward. When the steel bars on the tunnel grid steel frame are separated from the positioning clamp 3, the driving motor 86 stops working. In order to ensure safety, a supporting plate can be placed between the reinforcing mechanism 8 and the bottom plate 4, and the supporting plate can be any bearing device, which is not protected in this scheme.

[0052] The driving motor 86 is a Kaihao motor 600kg type motor, the rated power of which is 1.5KW, the rated voltage is AC220V, the rated current is 6.5A, the rated speed is 1400r / min, the rated torque is 9.55N.m, and the rated load is 600kg. Thus, the driving motor 86 can provide sufficient power to lift the horizontal pushing mechanism 6 and the tunnel grid steel frame on the surface when in use, and the driving motor 86 of this type is equipped with a wireless remote control system, the maximum control distance of which can reach 100 meters, so that the lifting of the motor can be conveniently controlled.

[0053] Preferably, the bottom of the lifting disc 83 is movably abutted on the bottom of the support frame 81, semicircular clamps are formed on the two sides of the lifting disc 83, and the lifting disc 83 is movably clamped with the limiting columns 82 through the semicircular openings. The lifting frame 7 is installed in the gap between the grid mold 1 and the bottom plate 4, and the distance between the reinforcing mechanism 8 and the bottom of the grid mold 1 is greater than the clamping distance between the upper and lower sides of the positioning clamp 3.

[0054] The programmable logic controller is used for automatically controlling the driving motor 86 and the two pneumatic push cylinders 72, and the working sequence and stroke of the driving motor 86 and the two pneumatic push cylinders 72 are edited in the programmable logic controller during use.

[0055] Working principle: when the tunnel grid steel frame is welded between the grid mold 1 and the positioning clamp 3, the driving motor 86 is started at this time. When the driving motor 86 rotates, the screw structure is generated with the lifting disc 83, and since the limiting column 82 limits the lifting disc 83, the lifting disc 83 is vertically moved upward. When the lifting disc 83 moves upward, the reinforcing mechanism 8 is pushed upward, and the reinforcing mechanism 8 moves upward and drives the lifting frame 7 to move upward. When the lifting frame 7 moves upward, the tunnel grid steel frame manufactured is pushed upward through the horizontal pushing mechanism 6, and finally the tunnel grid steel frame is separated from the clamping structure of the positioning clamp 3.

[0056] Then, the pneumatic push cylinder 72 is started, and the telescopic end of the pneumatic push cylinder 72 pushes the supporting plate 61 to move to one side along the bottom of the supporting plate 61. When the supporting plate 61 moves, the tunnel grid steel frame on the surface of the supporting plate 61 is completely pushed out from the positioning clamp 3, so that the tunnel grid steel frame manufactured can be conveniently taken out from the positioning clamp 3 through the above structure during actual use.

[0057] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A movable jig for manufacturing tunnel grating steel frames, comprising a grating jig (1), wherein three positioning clamps (3) are welded at equal intervals in an arc shape on the surface of the grating jig (1), and two movable base frames (2) with universal casters are symmetrically welded to the bottom of the grating jig (1), characterized in that, An arc-shaped base plate (4) is welded between the two movable base frames (2), and a central lateral support (5) is installed on the outer walls on both sides of the center end of the base plate (4); The surface of the grid fixture (1) is symmetrically provided with two sets of grooves (11). The interior of the two sets of grooves (11) is movably connected to the bottom of both sides of the transverse pushing mechanism (6). The bottom of both ends of the transverse pushing mechanism (6) is movably connected to the top of both sides of the lifting frame (7). The lifting frame (7) is equipped with a reinforcing mechanism (8).

2. The movable jig for manufacturing tunnel grating steel frames according to claim 1, characterized in that: The lateral pushing mechanism (6) includes two support plates (61). Two slide bars (62) are symmetrically fixedly installed at the bottom of each support plate (61). One end of each slide bar (62) is welded to the outer wall of one end of a side bar (63). The two side bars (63) are welded to the outer walls on both sides of the U-shaped part (64) at opposite ends.

3. The movable jig for manufacturing tunnel grating steel frames according to claim 1, characterized in that: A mounting base (71) is welded to the outer wall of one end of the lifting frame (7). A pneumatic push cylinder (72) is installed on the surface of the mounting base (71). An extension block (73) is welded to the outer wall of the other end of the lifting frame (7). Two sliding grooves (74) are symmetrically opened on the surface of each extension block (73).

4. A movable jig for manufacturing tunnel grating steel frames according to claim 2, characterized in that: The two slide bars (62) at the bottom of the pallet (61) are precisely aligned with the openings of the two slide grooves (74) on the corresponding extension block (73), and the bottom of one end of the pallet (61) is on the same horizontal plane as the bottom of the telescopic end of the pneumatic push cylinder (72).

5. A movable jig for manufacturing a tunnel grating steel frame according to claim 2, characterized in that: The pallet (61) is located between three positioning clamps (3), and the open end of the U-shaped piece (64) is positioned opposite to the positioning clamp (3) at the center.

6. A movable jig for manufacturing tunnel grating steel frames according to claim 1, characterized in that: Two sets of guide plates (41) are symmetrically welded on the surface of the base plate (4). Each set of guide plates (41) has a notch (42) at the top. A docking plate (75) is movably connected between each set of guide plates (41). The two ends of the docking plate (75) are welded to the inner wall of one end of the lifting frame (7).

7. A movable jig for manufacturing tunnel grating steel frames according to claim 1, characterized in that: The reinforcing mechanism (8) includes a support frame (81), the four ends of which are inclined and supported at the four corners of the lifting frame (7). A limiting post (82) is welded on the outer wall of both sides of the center end of the support frame (81). The bottom of the limiting post (82) extends out of the bottom surface of the support frame (81), and a lifting plate (83) is engaged between the extended ends of the two limiting posts (82).

8. A movable jig for manufacturing a tunnel grating steel frame according to claim 7, characterized in that: The lifting plate (83) has a screw (84) threaded through its interior. The bottom of the screw (84) is engaged with the output end of the drive motor (86). The top of the drive motor (86) is installed at the bottom of the central side bracket (5). The top of the screw (84) moves through the center end of the support frame (81). The top of the screw (84) moves with the bottom of the grid fixture (1) through a bearing (85). The bearing (85) is fitted inside the bottom side of the grid fixture (1). The bottom of the screw (84) extends downward through the base plate (4), and the screw (84) and the base plate (4) are movably connected by a bearing (85).

9. A movable jig for manufacturing a tunnel grating steel frame according to claim 7, characterized in that: The bottom of the lifting plate (83) is movably abutted against the bottom of the support frame (81). The lifting plate (83) has semi-circular slots on both sides. The lifting plate (83) is movably engaged with the limiting post (82) through the semi-circular openings.

10. A movable jig for manufacturing a tunnel grating steel frame according to claim 1, characterized in that: The lifting frame (7) is installed in the gap between the grid fixture (1) and the base plate (4), and the distance between the reinforcing mechanism (8) and the bottom of the grid fixture (1) is greater than the clamping distance between the upper and lower sides of the positioning clamp (3).

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