Safety stopper for crown block maintenance

Abstract

The utility model relates to the field of crown block maintenance safety protection, in particular to a safety stopper for crown block maintenance, which comprises a bottom plate, side plates vertically mounted at two ends of the bottom plate, bottom ends of the side plates vertically downwards extending to two sides of the bottom plate, fixing mechanisms arranged on the surfaces of the side plates, one end of the bottom plate extending to one side of the side plates, and buffer mechanisms arranged on the bottom plate. The buffering mechanism comprises a buffering plate, the buffering plate is arranged at the top of the bottom plate, the two ends of the buffering plate are rotationally connected with connecting plates, the other ends of the connecting plates are rotationally connected with the bottom plate, an included angle is formed between the buffering plate and the bottom plate, a mounting groove is formed in the bottom plate, and a guide rod is mounted in the mounting groove. The overhead travelling crane safety protection device can be rapidly installed on an overhead travelling crane running track, can effectively reduce impact force of overhead travelling crane collision, can block wheels of an overhead travelling crane, avoids the situation that two overhead travelling cranes collide with each other, greatly improves safety of the overhead travelling cranes and maintenance personnel, and meanwhile can further prompt an overhead travelling crane driver to play a warning role by installing a warning flag.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead crane maintenance safety protection, in particular to a safety stopper for overhead crane maintenance. Background Art

[0002] Two overhead cranes operate in the finished product span of the Rod Workshop 3. Their primary production task is to ensure the lifting, stacking, and loading of finished rebar for shipment. This busy schedule is prone to malfunctions. Overhead crane malfunctions, particularly those with damaged wheels on either the large or small crane, require immediate repair without affecting the operation of the other crane. Therefore, isolation and protection must be provided between the two cranes to prevent collisions and ensure the safety of maintenance personnel and equipment. Existing overhead cranes typically notify operators during maintenance by signaling, but the loud mechanical noise can make it difficult for operators to hear clearly, which can easily lead to collisions between the two cranes, compromising the safety of both personnel and equipment. Summary of the Invention

[0003] The main purpose of the utility model is to solve the above-mentioned existing technical problems and provide a safety stopper for overhead crane maintenance.

[0004] The top end of the slider is rotatably connected to the support rod, and the support rod is rotatably connected to the bottom of the buffer plate, so that the slider pushes the spring to one side to reduce the impact force on the buffer plate, and one end of the side plate is crescent-shaped and faces the buffer plate.

[0005] According to the above technical solution, the impact of the overhead crane wheel can be buffered by the buffer mechanism. At the same time, the crescent-shaped side plate tends to climb when the overhead crane collides, reducing the impact energy and improving the safety of the overhead crane maintenance.

[0006] Furthermore, the fixing mechanism includes screw holes, which are respectively provided on the surfaces of the two side panels. Bolts are threadedly connected inside the screw holes, and three groups of fixing mechanisms are respectively provided on the surfaces of the two side panels.

[0007] According to the above technical solution, the side panels can be effectively fixed to the rails by pressing the bolts against the rails.

[0008] Furthermore, there is a radian at the chamfer between the bottom plate and the buffer plate.

[0009] According to the above technical solution, the radian can effectively reduce the impact damage at the chamfer with the overhead crane wheel, improving practicability and safety.

[0010] Furthermore, there is a rib plate between the two side plates.

[0011] According to the above technical solution, the rib plate can effectively improve the anti-collision ability and strength of the side plates.

[0012] Furthermore, a flag socket is provided at the top of the side plate. The inside of the flag socket is hollow and there is an opening at the top. A warning flag is inserted through the flag socket.

[0013] According to the above technical solution, the warning flag can be installed through the flag socket to achieve a warning effect.

[0014] The utility model has the following advantages compared with the prior art: This safety stopper for overhead crane maintenance can be quickly installed on the overhead crane running track, can effectively reduce the impact force of the overhead crane collision, and can block the overhead crane wheel at the same time, avoiding the situation of two overhead cranes colliding, greatly improving the safety of the overhead crane and maintenance personnel. At the same time, by installing a warning flag, it can further prompt the overhead crane driver to play a warning role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 is Figure 1 the front elevation sectional view of

[0017] Figure 3 is Figure 1 the D-D sectional view of

[0018] Figure 4 is Figure 1 the enlarged view of the structure at A of

[0019] Figure 5 is Figure 2 the enlarged view of the structure at B of

[0020] Figure 6 is Figure 3 the enlarged view of the structure at C of

[0021] In the figure: 1, bottom plate; 2, side plate; 3, buffer plate; 4, connecting plate; 5, installation groove; 6, guide rod; 7, spring; 8, slider; 9, support rod; 10, screw hole; 11, bolt; 12, rib plate; 13, flag socket; 14, warning flag. DETAILED DESCRIPTION

[0022] See also Figures 1-6 , This embodiment is a safety stopper for overhauling an overhead crane, which consists of a bottom plate 1, with side plates 2 vertically mounted at both ends of the bottom plate 1, the bottom ends of the side plates 2 extending vertically downward to both sides below the bottom plate 1, a fixing mechanism mounted on the surface of the side plates 2, the fixing mechanism being used to mount and fix the stopper, one end of the bottom plate 1 extending to one side of the side plate 2, a buffer mechanism being mounted on the bottom plate 1, the buffer mechanism being used to reduce the impact on the wheels of the overhead crane, the buffer mechanism comprising a buffer plate 3, the buffer plate 3 being arranged on the top of the bottom plate 1 and on one side of the side plate 2, the two ends of the buffer plate 3 being rotatably connected to a connecting plate 4, the other end of the connecting plate 4 being rotatably connected to the bottom plate 1, the buffer plate 3 is provided with a 35° angle with the bottom plate 1 for wheel impact buffering. A mounting groove 5 is provided inside the bottom plate 1. A guide rod 6 is fixed transversely in the mounting groove 5. A spring 7 is set on the surface of the guide rod 6. A slider 8 is slidably connected to the surface of the guide rod 6. The slider 8 is located on one side of the spring 7. The top of the slider 8 is rotatably connected to the support rod 9. The end of the support rod 9 away from the slider 8 is rotatably connected to the bottom of the buffer plate 3. When the slider 8 moves, it pushes the spring 7 to one side, so that the spring 7 reduces the impact force on the buffer plate 3. One end of the side plate 2 is crescent-shaped and faces the buffer plate 3, so that the overhead crane wheel passes through the side plate 2 after passing the buffer plate 3 to reduce the impact energy.

[0023] Furthermore, the fixing mechanism includes screw holes 10, which are respectively provided on the surfaces of the side panels 2 on both sides below the base plate 1. The side panels 2 and the bottom ends of the base plate 1 form a U-shape that can clamp and fix the overhead traveling vehicle rails. The internal threads of the screw holes 10 are connected with bolts 11, and three sets of fixing mechanisms are respectively provided on the surfaces of the two side panels 2 for fixing the stoppers.

[0024] Furthermore, the chamfers of the bottom plate 1 and the buffer plate 3 are provided with arcs to facilitate the overhead crane wheels to bite into and perform buffering.

[0025] Furthermore, a rib plate 12 is welded between the two side panels 2 , thereby improving the strength and impact resistance of the side panels 2 .

[0026] Furthermore, a flag seat 13 is fixed to the top of the side panel 2 . The interior of the flag seat 13 is hollow and an opening is provided at the top. The opening is connected to the internal cavity. A warning flag 14 is passed through the flag seat 13 .

[0027] The working principle of this embodiment is as follows: During installation, first place the bottom plate 1 on the top of the railway track, then connect the bolt 11 with the screw hole 10 and pass through the side plate 2 so that it abuts against the railway track to complete the installation. Then insert the warning flag 14 into the flag insertion seat 13 to achieve the warning effect. When the overhead crane wheel presses on the buffer plate 3, at this time, the buffer plate 3 flips downward through the connecting plate 4, and at the same time, the support rod 9 is used to push the slider 8 to move on the slide rod. When the slider 8 moves, it pushes the spring 7 at the same time. The spring 7 effectively buffers the impact received by the buffer plate 3 and improves the stopping effect. When the overhead crane wheel contacts the crescent surface of the side plate 2, it tends to be in a climbing state, reducing the impact energy and further improving the practicality of the stopper. At the same time, this stopper can not only be used for overhead crane protection, but also for other rail transit tools, such as in-plant small trains. When disassembling the stopper, just disassemble the bolt 11.

Claims

1. A safety stopper for overhead crane maintenance, characterized in that: It includes a bottom plate, with side plates vertically installed at both ends of the bottom plate. The bottom ends of the side plates extend vertically downward to both sides of the bottom plate. A fixing mechanism is provided on the surface of the side plates. One end of the bottom plate extends to one side of the side plate. A buffer mechanism is provided on the bottom plate. The buffer mechanism includes a buffer plate. The buffer plate is arranged on the top of the bottom plate. Both ends of the buffer plate are rotatably connected to connecting plates, and the other ends of the connecting plates are rotatably connected to the bottom plate. There is an included angle between the buffer plate and the bottom plate. An installation groove is provided inside the bottom plate. A guide rod is installed inside the installation groove. A spring is sleeved on the surface of the guide rod. A slider is movably connected to the surface of the guide rod. The slider is located on one side of the spring. The top end of the slider is rotatably connected to a support rod, and the end of the support rod away from the slider is rotatably connected to the bottom of the buffer plate. When the slider moves, it pushes the spring to one side, so as to reduce the impact force received by the buffer plate. One end of the side plate is crescent-shaped and faces the buffer plate.

2. A safety stopper for overhead crane maintenance according to claim 1, characterized in that: The fixing mechanism includes screw holes, which are respectively arranged on the surfaces of the two side plates. Bolts are threadedly connected inside the screw holes. Three groups of fixing mechanisms are respectively provided on the surfaces of the two side plates.

3. The safety stopper for overhead crane maintenance according to claim 1 or 2, characterized in that, There is a radian at the chamfer between the bottom plate and the buffer plate.

4. The safety stopper for overhead crane maintenance according to claim 1 or 2, characterized in that, There is a rib plate between the two side plates.

5. The safety stopper for overhead crane maintenance according to claim 1 or 2, characterized in that, A flag socket is provided at the top end of the side plate. The inside of the flag socket is hollow and there is an opening at the top. A warning flag is inserted through the flag socket.

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