Safety gap bridge for cable trench of coil conveying trolley

Abstract

The utility model discloses a safety gap bridge for a cable trench of a coil transporting trolley, which belongs to the technical field of transportation equipment and comprises a foundation, a walking tunnel arranged at the foundation and a coil transporting trolley main body arranged on the inner side of the walking tunnel. A walking tunnel is arranged on the surface of the foundation, first positioning rails laid on the surface of the foundation are symmetrically arranged on one side of a top opening of the walking tunnel, second positioning rails laid on the surface of the foundation are symmetrically arranged on the other side of the top opening of the walking tunnel, and a gap bridge body is installed above the first positioning rails. The first positioning track is arranged at the bottom of the gap bridge body, the gap bridge body spans the walking underground tunnel and the lower guide wheels to enter the second positioning track on the opposite side after extending out, stable movement and accurate positioning are achieved, double-side heightened safety guardrails are arranged, safe passing is guaranteed, operation is safe and convenient, and the later maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation equipment, and more specifically, to a safety bridge used in a cable trench of a coil-carrying trolley. Background Art

[0002] There are four existing uncoiling trolleys in the first-phase rolling mill to realize the function of transferring coils across bays. The full-stroke channel length of the trolley is about 35 meters, and the depth of the pit is nearly 8 meters. To ensure safety, a heavy-duty drag chain with a flake-shaped drag plate structure is used to cover the pit and reduce the harm caused by high-altitude falling. The drag chain with a drag plate is connected to the trolley and moves in a reciprocating circular motion along with the trolley. It has been used for 13 years. In the past six months, three-level accidents have occurred continuously. The main reasons include: 1. Fatigue deformation of the drag chain and wear of the edge guard; 2. The walking track is deformed and arched outwards, causing the drag chain to derail; 3. The drag plate of the drag chain is impacted and deformed and twisted by the broken strip steel; 4. The cylindrical rollers of the chain are worn into abnormal shapes and skip teeth. At the same time, the main reasons for the time length of the three-level accidents include: 1. This heavy-duty drag chain is located under the foundation on the top of the pit and cannot be directly lifted out of the pit; 2. Once the 2-meter vertical section of the circular heavy-duty drag chain falls off, due to the limited space position of the pit foundation, it is extremely difficult to repair and lift; 3. For the circular drag chain with a total length of nearly 90 meters, it is difficult to adjust the bilateral tension and position, and the full stroke needs to be repeatedly tested. According to the actual cost of purchasing chain links and drag plates, for the existing drag chain with a drag plate, the spare part cost for replacing all the safety drag plate-related components of the four trolleys is about 1 million yuan or more, and the labor cost is estimated to be about 100,000 yuan to achieve the effect of complete repair.

[0003] After years of use, the overall drag chain is severely corroded, and the chain plates and chains are severely worn. The time cost, labor cost, and spare part cost of usual maintenance are relatively high. The chain is installed circularly with a total length of nearly 90 meters. If there is a deviation phenomenon, it is very troublesome to adjust and it is not easy to achieve the expected effect. The replacement and adjustment of the chain are carried out in a narrow space position and are high-altitude operations, which are time-consuming and laborious. In the past six months, three relatively large accidents have occurred continuously, and the handling is very difficult. Once a failure occurs and the trolley cannot transport materials, it is necessary to stop the machine for handling. To solve this frequently occurring accident, improve the production line time per unit, produce more qualified products, and reduce various maintenance costs, it is very necessary to transform the chain plates, so we propose a safety bridge used in a cable trench of a coil-carrying trolley to solve the above existing problems. Content of the Utility Model

[0004] 1. Technical Problems to be Solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a safe bridge used in the cable trench of a winding trolley. It adopts a long-stroke cylinder for telescopic movement. There is a first positioning track at the bottom of the bridge body. After the bridge body is extended, it crosses the walking tunnel, and the lower guide wheel enters the second positioning track on the opposite side to achieve stable movement and precise positioning. It is equipped with double-sided raised safety guardrails to ensure safe passage, safe and convenient operation, and low subsequent maintenance costs.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A safe bridge for a cable trench of a coil transport trolley, comprising a foundation, a walking tunnel opened at the foundation, and a coil transport trolley body installed inside the walking tunnel, wherein a first positioning track laid on the foundation surface is symmetrically arranged on one side of the top opening of the walking tunnel, and a second positioning track laid on the foundation surface is symmetrically arranged on the other side of the top opening of the walking tunnel;

[0009] A bridge body is installed above the first positioning track, safety guardrails are fixedly connected to both sides of the bridge body, and a lower guide wheel connected to the first positioning track is installed at the bottom of the bridge body;

[0010] A cylinder is arranged below the bridge body at a position between the first positioning rails which are symmetrically arranged, and a movable end of the cylinder is drivingly connected to the bridge body.

[0011] Furthermore, the symmetrically laid first positioning rails and the symmetrically laid second positioning rails correspond to each other.

[0012] Furthermore, the bridge body adopts a double-layer thickened bottom plate.

[0013] Furthermore, the cylinder is fixedly connected to the surface of the foundation via a bracket, and the movable end of the cylinder is connected to the bridge body via a connecting ear.

[0014] Furthermore, the displacement of the movable end of the cylinder is greater than the span of the top opening of the walking tunnel.

[0015] Furthermore, a steel coil is placed on the top saddle of the coil transport trolley body.

[0016] Furthermore, electric double-control switches are installed on both sides of the bridge body, and the electric double-control switches are electrically connected to the cylinder.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] In this solution, the bridging body extends through the cylinder to make the bridging body in the extended state for the convenience of the operator to pass. After the steel coil rolling is completed and the quality inspection of the steel coil is completed on the saddle of the coil transfer car body, the cylinder connecting the bridging body retracts to make the bridging body in the retracted state. At this time, the coil transfer car body walks to the lower part of the steel coil and jacks it up. The coil transfer car body walks inside the walking tunnel to another adjacent workshop and is hoisted by the overhead crane for the next processing step. The operation is safe and convenient, and the later maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is a schematic diagram of the retracted state of the bridging body of the present utility model;

[0022] Figure 3 is a schematic diagram of the extended state of the bridging body of the present utility model;

[0023] Figure 4 is a schematic diagram of the structure of the lower guide wheel of the present utility model.

[0024] Description of the reference numerals in the drawings:

[0025] 1, foundation; 2, walking tunnel; 3, first positioning track; 4, second positioning track; 5, bridging body; 6, safety guardrail; 7, lower guide wheel; 8, cylinder; 9, coil transfer car body; 10, steel coil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment:

[0028] Please refer to Figures 1-4 , a safety bridge used for the cable trench of a coil transfer car, including a foundation 1, a walking tunnel 2 opened at the foundation 1, and a coil transfer car body 9 installed inside the walking tunnel 2. On one side of the top opening of the walking tunnel 2, first positioning tracks 3 laid on the surface of the foundation 1 are symmetrically arranged, and on the other side of the top opening of the walking tunnel 2, second positioning tracks 4 laid on the surface of the foundation 1 are symmetrically arranged;

[0029] A bridge body 5 is installed above the first positioning track 3, and safety guardrails 6 are fixedly connected to both sides of the bridge body 5. A lower guide wheel 7 connected to the first positioning track 3 is installed at the bottom of the bridge body 5;

[0030] A cylinder 8 is provided below the bridge body 5 and between the symmetrically arranged first positioning rails 3, and the movable end of the cylinder 8 is drivingly connected to the bridge body 5;

[0031] Both sides of the bridge body 5 are equipped with electric double-control switches, and the electric double-control switches are electrically connected to the cylinder 8;

[0032] It should be noted that the retractable safety bridge is designed to be telescopically moved by a long-stroke cylinder 8. A first positioning track 3 is provided at the bottom of the bridge body 5. After the bridge body 5 is extended, it crosses the walking tunnel 2, and the lower guide wheel 7 enters the second positioning track 4 on the opposite side to achieve stable movement and precise positioning. It is equipped with double-sided heightened safety guardrails 6 to ensure safe passage.

[0033] The electric double-control switches respectively arranged on both sides of the bridge body 5 can control the opening and closing of the bridge body 5. The electric double-control switches control the reversing of the pneumatic solenoid valve connected to the cylinder 8, thereby realizing the extension and retraction of the cylinder 8, driving the bridge body 5 to open and close. When people pass through, the bridge body 5 is extended and passes safely. When the coil transport trolley body 9 needs to pass through, the bridge body 5 is retracted to realize the normal passage of the steel coil 10 with the maximum coil diameter.

[0034] The estimated investment cost of four telescopic safety bridges is 100,000 to 200,000 yuan, and the subsequent maintenance cost is low.

[0035] like Figure 1 As shown, the symmetrically laid first positioning rails 3 and the symmetrically laid second positioning rails 4 correspond to each other;

[0036] It should be noted that the movable end of the cylinder 8 pushes the bridge body 5 to move, so that the lower guide wheel 7 moves in coordination with the first positioning track 3. After the bridge body 5 is extended, it crosses the walking tunnel 2, and the lower guide wheel 7 enters the second positioning track 4 on the opposite side, achieving stable movement and precise positioning.

[0037] like Figure 4 As shown, the bridge body 5 adopts a double-layer thickened bottom plate;

[0038] It should be noted that the bridge body 5 adopts a double-layer thickened bottom plate, which can effectively ensure the strength of the bottom of the bridge body 5.

[0039] like Figure 1 , Figure 2 , Figure 3As shown in the figure, the cylinder 8 is fixedly connected to the surface of the foundation 1 through a bracket, and the movable end of the cylinder 8 is connected to the overpass body 5 through a connecting ear. The displacement of the movable end of the cylinder 8 is greater than the span of the top opening of the walking tunnel 2;

[0040] It should be noted that the telescopic movement of the overpass body 5 can be realized normally, so that the overpass body 5 can span the walking tunnel 2.

[0041] As Figure 1 shown in the figure, a steel coil 10 is placed on the saddle part at the top of the coil handling trolley body 9;

[0042] It should be noted that by moving the coil handling trolley body 9 inside the walking tunnel 2, the transfer of the steel coil 10 is facilitated.

[0043] During use: During normal production, the overpass body 5 is extended by the cylinder 8 so that the overpass body 5 is in the extended state for the convenience of the operator to pass. After the steel coil 10 is rolled and the quality inspection of the steel coil 10 is completed on the saddle of the coil handling trolley body 9, the cylinder 8 connecting the overpass body 5 retracts so that the overpass body 5 is in the retracted state. At this time, the coil handling trolley body 9 walks to the lower part of the steel coil 10 and jacks it up. The coil handling trolley body 9 walks inside the walking tunnel 2 to another adjacent workshop and is lifted by a crane for the next processing step.

[0044] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A safety bridge for use in the cable trench of a coil transfer trolley, comprising a foundation (1), a walking tunnel (2) opened at the foundation (1), and a coil transfer trolley main body (9) installed inside the walking tunnel (2), characterized in that: A first positioning track (3) laid on the surface of the foundation (1) is symmetrically arranged on one side of the top opening of the walking tunnel (2), and a second positioning track (4) laid on the surface of the foundation (1) is symmetrically arranged on the other side of the top opening of the walking tunnel (2); A bridge body (5) is installed above the first positioning track (3), safety guardrails (6) are fixedly connected to both sides of the bridge body (5), and a lower guide wheel (7) connected to the first positioning track (3) is installed at the bottom of the bridge body (5); A cylinder (8) is provided below the bridge body (5) at a position between the first positioning rails (3) which are symmetrically arranged, and a movable end of the cylinder (8) is drivingly connected to the bridge body (5).

2. The safety bridge used in the cable trench of the coil transfer trolley according to claim 1, characterized in that: The first positioning rails (3) that are symmetrically laid correspond to the second positioning rails (4) that are symmetrically laid.

3. The safety bridge for use in the cable trench of a coil carriage according to claim 1, characterized in that: The bridge body (5) adopts a double-layer thickened bottom plate.

4. The safety bridge used in the cable trench of the coil transfer trolley according to claim 1, characterized in that: The cylinder (8) is fixedly connected to the surface of the foundation (1) via a bracket, and the movable end of the cylinder (8) is connected to the bridge body (5) via a connecting ear.

5. The safety bridge used in the cable trench of the coil carriage according to claim 1, characterized in that: The displacement of the movable end of the cylinder (8) is greater than the span of the top opening of the walking tunnel (2).

6. The safety bridge for use in the cable trench of a coil handling trolley according to claim 1, wherein: A steel coil (10) is placed on the top saddle of the coil transport trolley body (9).

7. The safety bridge used in the cable trench of the coil transfer trolley according to claim 1, characterized in that: Electric double-control switches are installed on both sides of the bridge body (5), and the electric double-control switches are electrically connected to the cylinder (8).

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