Safe hoisting indicating device for bell-type furnace

Abstract

The utility model belongs to the technical field of bell-type furnaces, and discloses a bell-type furnace safety hoisting indicating device which comprises a cover body, a hoisting ring is arranged at the top of the cover body, the cover body is provided with an indicating device, the indicating device comprises a heavy hammer, a turning plate and two groups of supporting plates arranged on one side of the hoisting ring, and the supporting plates are arranged at intervals. A rotating shaft rotationally connected with the supporting plate penetrates through the upper portion of the supporting plate, one end of the rotating shaft penetrates out of the supporting plate on one side, the end of the rotating shaft is connected with a heavy hammer through a rope, a guide sleeve for the rope to penetrate through is arranged on the edge of the cover body, a positioning sleeve is arranged on the vertical side wall of the cover body and located below the guide sleeve, and the heavy hammer penetrates through the positioning sleeve in a sliding mode. The turning plate is arranged on the rotating shaft, located on one side of the hanging ring and used for being matched with a hook head of a crane to drive the rotating shaft to rotate, and the rope pulls the heavy hammer to move. By taking the positioning sleeve as a reference, a worker observes the movement of the counter weight, so that the hanging state of the hook head and the hanging ring can be accurately judged.

Description

Technical Field

[0001] This utility model belongs to the technical field of bell-type furnaces, and specifically relates to a safety lifting indicator device for bell-type furnaces. Background Technology

[0002] For the copper and copper alloy processing industry, post-rolling annealing is an essential process. Most companies use a bell-type furnace to anneal the rolled strip to eliminate residual stress and refine the grain size. Currently, most bell-type furnace cooling and heating hoods are installed by welding lifting lugs (rings) directly to the top of the hood. The crane hook passes through the lugs (rings) to complete the lifting operation. If the crane hook does not fully pass through the lugs, swaying will occur during lifting, and in severe cases, overturning accidents may occur.

[0003] The heating and cooling hoods of bell-type furnaces are quite tall and large, posing significant risks during hoisting. To improve production efficiency and reduce costs, bell-type furnaces typically load more than four coils of material. Based on a load of four coils, the heating and cooling hoods need to be at least 3 meters high (the height increases with the number of coils loaded). This height is well beyond human line of sight, limiting observation capabilities. Therefore, to address this issue, a safety hoisting indicator device for bell-type furnaces is designed. Utility Model Content

[0004] The purpose of this utility model is to provide a safety lifting indicator device for a bell-type furnace, which aims to solve the technical problem in the background art where the height of the bell body makes it impossible for personnel to accurately observe the hanging status of the hook and the lifting ring.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A safety lifting indicator device for a bell-type furnace includes a bell body with a lifting ring at the top. The bell body also includes an indicator device comprising a counterweight, a flapper, and a support plate positioned on one side of the lifting ring. Two sets of support plates are spaced apart. A rotating shaft, rotatably connected to the upper part of each support plate, passes through the upper part of the support plate. One end of the rotating shaft extends out of one support plate, and its end is connected to the counterweight via a rope. A guide sleeve is provided on the edge of the bell body for the rope to pass through. A positioning sleeve is provided on the vertical sidewall of the bell body below the guide sleeve. The counterweight slides through the positioning sleeve. The flapper is positioned on the rotating shaft and located on one side of the lifting ring, used to cooperate with the hook of a crane to rotate the rotating shaft, and the rope pulls the counterweight to move.

[0007] Furthermore, a limiting plate is provided on the side wall of the cover below the hammer. The distance between the limiting plate and the bottom of the positioning sleeve is less than the length of the hammer, and the limiting plate is spaced apart from the bottom of the hammer.

[0008] Furthermore, the end of the rotating shaft is provided with a turntable, and the edge of the turntable is provided with a connecting hole for connecting a rope.

[0009] Furthermore, two sets of fixing plates are symmetrically and parallelly spaced on both sides of the diameter of the top of the cover. The connecting rods on both sides of the lifting ring are respectively fixed to the outside of the two fixing plates. The two support plates are respectively fixed to the outside of the two fixing plates. The lower part of the support plate is provided with a first through hole, and the fixing plate is provided with a corresponding second through hole. Multiple second through holes are spaced along the length of the fixing plate. The aligned first through holes and second through holes are connected by bolts.

[0010] Furthermore, the top of the cover is provided with radial stiffeners, and multiple stiffeners are evenly spaced along the circumference of the top center of the cover, with one end of each stiffener connected to a fixed plate.

[0011] Furthermore, the radius of the turntable is 150mm-200mm.

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

[0013] 1. This utility model provides a safety lifting indicator device for a bell-type furnace. A counterweight is set on the vertical side wall of the bell-type furnace. The top of the counterweight is equipped with a support plate, a rotating shaft, and a flap. The counterweight is connected to the rotating shaft by a rope. When the hook passes through the lifting ring, it drives the flap to move. The rotating shaft and rope sequentially drive the counterweight to rise. With the positioning sleeve as a reference, it is convenient for the staff to accurately observe the movement of the counterweight, thereby accurately judging the hanging status of the hook and the lifting ring.

[0014] 2. A turntable is installed at the end of the shaft. When the flip plate drives the shaft to rotate, it increases the distance that the rope moves with the weight, making it easier for staff to observe. A limiting plate is installed in the cover below the weight. The limiting plate and the positioning sleeve work together to limit the weight and avoid the risk of the weight falling due to sudden rope breakage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the safety lifting indicator device for the bell-type furnace of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the cover setting indicator device in this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the flap and the rotating shaft in this utility model.

[0018] Figure 4 This is a side view of the cover structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the rotating shaft with a turntable at the end in this utility model.

[0020] Figure 6 This is a schematic diagram of the connection structure between the support plate and the fixing plate in this utility model.

[0021] In the diagram: 100, cover; 110, lifting ring; 111, connecting rod; 112, arched connection; 120, fixing plate; 121, second through hole; 130, stiffening plate; 201, support plate; 202, rotating shaft; 203, flap; 204, rope; 205, guide sleeve; 206, counterweight; 207, positioning sleeve; 208, limiting plate; 209, turntable; 210, connecting hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Example 1

[0024] Reference Figure 1 The embodiment discloses a safety lifting indicator device for a bell-type furnace, including a bell body 100, the top of the bell body 100 having a lifting ring 110, the lifting ring 110 being used to engage with the hook of a crane to lift the bell body 100 by the crane.

[0025] Reference Figure 2 The lifting ring 110 includes two parallel connecting rods 111, which are connected to the top surface of the cover 100. The top of the connecting rod 111 is provided with an arched connecting part 112.

[0026] Reference Figure 3 The top of the cover 100 is equipped with an indicator device to indicate the hooking status of the worker's hook head and the lifting ring 110. The indicator device includes a support plate 201, a flip plate 203, and a counterweight 206. The support plates 201 are arranged parallel to each other on the top of the cover 100. The support plates 201 are located on one side of the lifting ring 110. The distance between the support plates 201 is the same as the distance between the connecting rods 111 on both sides of the lifting ring 110. The support plates 201 are aligned with the connecting rods 111 of the lifting ring 110. A rotating shaft 202 passes through the upper part of the support plate 201. The rotating shaft 202 is rotatably connected to the support plates 201 on both sides.

[0027] One end of the rotating shaft 202 extends to the outside of a support plate 201. The end of the rotating shaft 202 located outside the support plate 201 is connected to the counterweight 206 via a rope 204, preferably a steel wire rope. The counterweight 206 is located on one side of the vertical sidewall of the cover 100. A guide sleeve 205 is provided at the top edge of the cover 100, and the steel wire rope passes through the guide sleeve 205. (Refer to...) Figure 4The guide sleeve 205 is provided with a bend to avoid wear caused by the rope 204 coming into contact with the top edge of the cover 100.

[0028] A positioning sleeve 207 is provided on the vertical side wall of the cover 100 below the guide sleeve 205. The counterweight 206 has a rod-shaped structure, and the positioning sleeve 207 is slidably sleeved on the outside of the counterweight 206.

[0029] Reference Figure 3 The flap 203 is set on the rotating shaft 202. When the hook head passes through the lifting ring 110, the hook head contacts the flap 203 and lifts the flap 203. The flap 203 drives the rotating shaft 202 to rotate. The rotating shaft 202 pulls the weight 206 through the rope 204, causing the position of the weight 206 to move upward.

[0030] To facilitate observation by staff, the counterweight 206 and the positioning sleeve 207 are painted in different colors, for example, the counterweight 206 is painted yellow and the positioning sleeve 207 is painted black.

[0031] Markings are set on the surface of the counterweight 206. The positional relationship between the markings and the positioning sleeve 207 is used to determine whether the hook head and the lifting ring 110 are stably suspended.

[0032] Reference Figure 4 A limiting plate 208 is provided at intervals below the positioning sleeve 207. The limiting plate 208 is connected to the side wall of the cover 100. The distance between the limiting plate 208 and the bottom of the positioning sleeve 207 is less than the length of the counterweight 206. When the hook and the lifting ring 110 are not in contact, the top surface of the limiting plate 208 is spaced from the bottom surface of the counterweight 206 to ensure that the counterweight 206 moves freely with the rope 204. At the same time, the limiting plate 208 and the positioning sleeve 207 cooperate to limit the counterweight 206 and avoid the risk of the counterweight 206 falling when the rope 204 breaks suddenly.

[0033] The working principle of the bell-type furnace safety lifting indicator device in this embodiment is as follows:

[0034] When the hook is not suspending the lifting ring 110, i.e. in the initial state, the bottom of the counterweight 206 is spaced apart from the limiting plate 208, and at the same time, the marking on the counterweight 206 is spaced a certain distance from the lower edge of the positioning sleeve 207.

[0035] When the hook head enters the lifting ring 110, that is, during the hoisting process, the hook head contacts the flap 203 and lifts the flap 203. The flap 203 drives the rotating shaft 202 to rotate, which pulls the weight 206 upward through the rope 204. The mark on the weight 206 moves to the lower edge of the positioning sleeve 207, which indicates to the workers that the hook head and the lifting ring 110 are stably hoisted.

[0036] Example 2

[0037] This embodiment is a further improvement on embodiment 1.

[0038] This embodiment provides a safety lifting indicator device for a bell-type furnace (refer to...). Figure 5 The rotating shaft 202 is located at the end of the support plate 201 outside and is provided with a turntable 209. The rotating shaft 202 is perpendicularly connected to the center of the turntable 209. The turntable 209 is provided with a connecting hole 210 near the edge. The connecting hole 210 is used to connect the rope 204.

[0039] The radius of turntable 209 is 150mm-200mm.

[0040] The working process of this embodiment follows that of Embodiment 1, and is specifically described as follows:

[0041] A turntable 209 is installed at the end of the rotating shaft 202, so that the connection position of the rope 204 and the turntable 209 is spaced a certain distance from the rotating shaft 202. When the rotating shaft 202 rotates, the distance that the weight 206 is pulled up by the rope 204 increases, which makes it easier for the staff to accurately observe and judge the connection status between the hook and the lifting ring 110.

[0042] Example 3

[0043] Example 3 is a further improvement on Example 1.

[0044] Reference Figure 4 and Figure 6 This embodiment provides a safety lifting indicator device for a bell-type furnace. The top surface of the bell 100 is provided with two sets of fixed plates 120 arranged in parallel at intervals. The fixed plates 120 are symmetrically arranged on both sides of the diameter of the top surface of the bell 100. The connecting rods 111 on both sides of the lifting ring 110 are fixedly connected to the outer sides of the two fixed plates 120 respectively. Correspondingly, the two support plates 201 are respectively connected to the two fixed plates 120 by bolts. Specifically, the lower part of the support plate 201 is provided with a first through hole, and the fixed plate 120 is provided with second through holes 121 at intervals along its length direction. The aligned first through holes and second through holes 121 are connected by bolts.

[0045] The distance between different second through holes 121 and lifting ring 110 is different, thereby adjusting the distance between support plate 201 and lifting ring 110, that is, adjusting the distance between flap 203 and lifting ring 110, so as to adapt to different specifications of crane hooks, such as 10-ton and 16-ton crane hooks, so that flap 203 can be matched with different hooks to ensure that the staff can observe accurately.

[0046] Correspondingly, ropes 204 of different lengths need to be replaced so that the limiting plate 208 and the positioning sleeve 207 can cooperate with the limiting weight 206. At the same time, it is necessary to ensure that the scale lines on the weight 206 cooperate with the positioning sleeve 207 so that the staff can observe.

[0047] Reference Figure 1The top surface of the cover 100 is provided with multiple stiffening plates 130, which are arranged radially along the top surface of the cover 100. The bottom of the stiffening plates 130 is fixedly connected to the top surface of the cover 100, and one end of the stiffening plates 130 is fixedly connected to the fixing plate 120. The cooperation between the stiffening plates 130 and the fixing plate 120 helps to distribute the force evenly on the cover 100 during the suspension process, thereby improving the stability of the suspended cover 100.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety lifting indicator device for a bell-type furnace, comprising a bell body, wherein a lifting ring is provided at the top of the bell body, characterized in that, The enclosure is equipped with an indicator device, which includes a counterweight, a flap, and a support plate located on one side of the lifting ring. Two sets of support plates are spaced apart. A rotating shaft is rotatably connected to the upper part of the support plate. One end of the rotating shaft passes through one of the support plates, and its end is connected to the counterweight via a rope. The edge of the enclosure is provided with a guide sleeve for the rope to pass through. A positioning sleeve is provided on the vertical side wall of the enclosure below the guide sleeve. The counterweight slides through the positioning sleeve. The flap is located on the rotating shaft and is located on one side of the lifting ring. It is used to cooperate with the hook of the crane to drive the rotating shaft to rotate, and the rope pulls the counterweight to move.

2. The indicating device as claimed in claim 1, characterized in that, A limiting plate is provided on the side wall of the cover below the hammer. The distance between the limiting plate and the bottom of the positioning sleeve is less than the length of the hammer, and the limiting plate is spaced apart from the bottom of the hammer.

3. The indicating device as claimed in claim 1, characterized in that, The shaft end is provided with a turntable, and the edge of the turntable is provided with a connection hole for connecting a rope.

4. The indicating device as claimed in claim 1, characterized in that, Two sets of fixing plates are symmetrically and parallelly spaced on both sides of the diameter of the top of the cover. The connecting rods on both sides of the lifting ring are fixed to the outside of the two fixing plates respectively. The support plates on both sides are fixed to the outside of the two fixing plates respectively. The lower part of the support plate is provided with a first through hole, and the fixing plate is provided with a second through hole. Multiple second through holes are spaced along the length of the fixing plate. The aligned first through holes and second through holes are connected by bolts.

5. The indicating device as claimed in claim 4, characterized in that, The top of the cover is provided with a rib plate along the radial direction, and multiple rib plates are evenly spaced along the circumference of the top center of the cover. One end of each rib plate is connected to a fixed plate.

6. The indicating device as claimed in claim 3, characterized in that, The radius of the turntable is 150mm-200mm.

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