Anti-falling device for hot galvanizing ash door
By designing a fall protection device in the hot-dip galvanizing equipment and utilizing a combination of a crane and a fall protector, the risk of falling due to corrosion of the ash-closing door of the zinc boiler was solved, achieving both safe lifting and fall protection functions and ensuring the safety of workers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-31
AI Technical Summary
In the hot-dip galvanizing process, the ash-draining door of the zinc boiler hood is at risk of accidental fall due to corrosion, increasing the safety hazards for workers.
A fall protection device was designed, comprising a door frame, a fall arrestor, a fall arrestor block, and a capture mechanism. Utilizing a combination structure of a hoist, guide groove, lateral adjustment groove, and arc-shaped adjustment groove, and driven by a helical spring and a motor, the support arm is used to achieve the safe lifting and fall protection functions of the ash-removing door.
This effectively reduced the risk of accidental falls from the ash-drying door, ensuring the health and safety of staff.
Smart Images
Figure CN224058271U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hot-dip galvanizing equipment technology, and more specifically, to a device for preventing falls from hot-dip galvanizing ash-dip doors. Background Technology
[0002] In the hot-dip galvanizing process, after the metal workpiece is removed from the molten zinc, some unreacted zinc powder and oxides remain on its surface. These residues affect the appearance and quality of the coating. Therefore, workers usually need to use tools such as pneumatic vibrators or wooden mallets to vibrate the surface of the metal workpiece at a specific frequency and amplitude to remove the residual zinc powder and oxides. This process is also known as dust removal.
[0003] In related technologies, ash removal is generally completed inside the zinc boiler hood, which consists of several parts, including the boiler body, boiler cover, sensors, electrical equipment, and ash removal door. The ash removal door is the main entrance to the zinc boiler hood. Only after the ash removal door is raised to a safe height and stopped can workers bring their tools and enter the zinc boiler hood to perform ash removal.
[0004] However, due to the long-term use of zinc boiler covers, the locking structure of the ash-draining door is prone to corrosion, which may lead to the door falling accidentally when the boiler is not in operation, thus increasing the risk to workers. Utility Model Content
[0005] In view of this, the present application provides a device to prevent the ash-drying door of a hot-dip galvanized boiler from falling off, in order to solve the technical problem in the related art that the ash-drying door of a zinc boiler cover may fall off due to corrosion.
[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:
[0007] A device for preventing falls from hot-dip galvanized doors includes:
[0008] A door frame, wherein a hoist is provided at the upper end of the inner side surface of the door frame, and a track is also provided on the inner side surface of the door frame, the track being located below the hoist, and the hoist driving the door body to slide within the track via a hook;
[0009] A fall arrestor is fixedly installed on the inner side surface of the door frame and located between the hoist and the door. The side of the fall arrestor is provided with a guide groove, and the inner side surface of the guide groove is provided with a lateral adjustment groove and an arc-shaped adjustment groove. A helical spring is installed inside the lateral adjustment groove, and the arc-shaped adjustment groove is located at the end of the lateral adjustment groove and communicates with it. The arc-shaped adjustment groove extends along the inside of the guide groove.
[0010] A fall arrestor is provided in the guide groove and slidably connected to the transverse adjustment groove and the arc-shaped adjustment groove. The top of the fall arrestor is provided with a chamfered part that contacts the door body.
[0011] The capture mechanism includes a support arm rotatably mounted on the side wall of the fall arrester, and a motor for driving the support arm to rotate. The support arm is located beside the fall arrester block and is used to rotate to the bottom end of the fall arrester block and contact its bottom surface so that the fall arrester block remains horizontal.
[0012] In some possible implementations, the top and bottom of the anti-fall block are provided with chamfered portions in the vertical direction, and the anti-fall block contacts the door body through the chamfered portions.
[0013] In some possible implementations, the bottom length of the anti-fall block is equal to the bottom length of the transverse adjustment groove.
[0014] In some possible implementations, the fall arrestor is fixed to the inner side surface of the door frame by bolts.
[0015] In some possible implementations, the side of the fall arrestor block is provided with a sliding column that is slidably connected to the lateral adjustment groove and the arc-shaped adjustment groove.
[0016] In some possible implementations, the top surface of the fall arrestor block contacts the top surface of the guide groove, and the bottom end of the guide groove is an open design.
[0017] In some possible implementations, the length of the lateral adjustment groove is less than the depth of the guide groove.
[0018] In some possible implementations, the length of the transverse adjustment groove is greater than the length of the helical spring, which is fixed to the end away from the arc-shaped adjustment groove.
[0019] The anti-fall device for hot-dip galvanized ash-filled doors provided in this application embodiment has at least the following beneficial effects:
[0020] In the anti-fall device for hot-dip galvanizing ash-drying doors provided in this application embodiment, the support arm of the grabbing mechanism rotates to the bottom end of the anti-fall block and contacts its bottom surface. After the door body contacts the chamfered portion during its ascent, it forces the anti-fall device to move towards the inside of the guide groove under the guidance of the horizontal adjustment groove. During this process, the anti-fall block compresses the helical spring and contracts. As the door body rises to a safe height, the anti-fall block returns to its initial position under the action of elasticity and abuts against the door body to achieve the anti-fall function. When the support arm rotates to the side of the anti-fall block, the anti-fall block slides down under the guidance of the arc-shaped adjustment groove, allowing the door body to fall normally. This structural design reduces the risk of accidental falls of the ash-drying door during ash-drying processes, thereby ensuring the health and safety of workers. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the overall structure of the anti-fall device for hot-dip galvanized ash-filled doors provided in an embodiment of this application;
[0023] Figure 2 for Figure 1 Schematic diagram of the mid-range fall arrestor;
[0024] Figure 3 for Figure 2 Exploded view of the middle side section;
[0025] Figure 4 for Figure 1 A schematic diagram of the fall arrestor in fall-proof mode;
[0026] Figure 5 for Figure 4 A schematic diagram showing the deactivation of the fall arrestor.
[0027] In the picture:
[0028] 100. Door frame; 200. Track; 300. Crane; 310. Hook; 400. Fall arrestor; 410. Guide groove; 420. Lateral adjustment groove; 430. Arc adjustment groove; 500. Helical spring; 600. Fall arrestor block; 700. Chamfered corner; 800. Support arm; 900. Sliding column; 1000. Door body. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] like Figures 1-5 As shown in the embodiment of this application, the anti-fall device for hot-dip galvanizing ash-filling doors includes a door frame 100, an anti-fall device 400, an anti-fall block 600, and a grabbing mechanism. The door frame 100 is fixed to the entrance of the zinc boiler hood via embedded parts or bolts to bear the entire load of the ash-filling door body 1000. A hoist 300 is installed near the upper end of the inner surface of the side of the door frame 100, and a hook 310 is provided at the drive end of the hoist 300. Simultaneously, a track 200 is also provided on the inner surface of the side of the door frame 100, and the door body 1000 is slidably mounted on the door frame 100 via the track 200. Specifically, the hook 310 of the hoist 300 is connected to the top of the door body 1000 via a suspension chain, thereby controlling the lifting and lowering of the door body 1000.
[0031] The fall arrestor 400 is a device used to prevent the door 1000 from accidentally falling downwards. The fall arrestor 400 is fixedly installed on the inner surface of the door frame 100 in the side direction, and is located between the door 1000 and the hoist 300. Preferably, the fall arrestor 400 can be fixed on the inner surface of the door frame 100 in the side direction by bolts.
[0032] like Figure 2 and Figure 3 As shown, the fall arrestor 400 has a guide groove 410 on its side, a transverse adjustment groove 420 on the inner surface of the side of the guide groove 410, and an arc-shaped adjustment groove 430 connected to the end of the transverse adjustment groove 420. The transverse adjustment groove 420 is horizontally positioned on the inner surface of the side of the guide groove 410, and a helical spring 500 is installed inside the transverse adjustment groove 420. The helical spring 500 is fixedly connected to the wall of the transverse adjustment groove 420 away from the arc-shaped adjustment groove 430, which extends downwards and into the guide groove 410. The helical spring 500 should be made of high-temperature resistant and corrosion-resistant spring steel (e.g., 316 stainless steel) to avoid affecting its performance in the high-temperature and corrosive environment inside the zinc boiler hood. Preferably, the top surface of the fall arrestor block 600 contacts the top surface of the guide groove 410, and the bottom end of the guide groove 410 is open.
[0033] The specific dimensions of the transverse adjustment groove 420 and the arc-shaped adjustment groove 430, such as length, width, and curvature, can be determined based on the volume and weight of the actual zinc boiler hood's ash-removing door. Similarly, the preload and elastic coefficient of the helical spring 500 only need to meet the expected anti-fall function; this embodiment will not elaborate further.
[0034] In this embodiment, the anti-fall block 600 is disposed within the guide groove 410 of the anti-fall device 400 and slidably disposed within the horizontal adjustment groove 420 and the arc-shaped adjustment groove 430. Preferably, a sliding post 900 is fixedly disposed on the side wall of the anti-fall block 600, and the sliding post 900 of the anti-fall block 600 is slidably disposed within the horizontal adjustment groove 420 and the arc-shaped adjustment groove 430. Simultaneously, the top of the anti-fall block 600 is also provided with a chamfered portion 700 that contacts the door body 1000. Preferably, both the top and bottom ends of the anti-fall device 400 in the vertical direction are provided with chamfered portions 700.
[0035] Continue as Figure 2 and Figure 3 As shown, the capture mechanism includes a support arm 800 rotatably mounted on the side wall of the fall arrester 400, and a motor fixedly mounted on the side wall of the fall arrester 400, which can drive the support arm 800 to rotate. The hinge point of the support arm 800 is located on the side of the fall arrester 400, and the support arm 800 can rotate to a preset position under the drive of the motor.
[0036] In actual use, the fall arrestor 600 is slidably positioned inside the transverse adjustment groove 420 and contacts the helical spring 500 within the transverse adjustment groove 420. Simultaneously, the support arm 800 of the capture mechanism rotates under the drive of a motor to below the fall arrestor 600 and contacts its bottom surface. Figure 2 As shown, the crane 300 lifts the door 1000 upwards. During this lifting process, the door 1000 comes into contact with the chamfered portion 700 of the anti-fall block 600, forcing the anti-fall block 600 to move along the direction of the transverse adjustment groove 420 and compress the coil spring 500. After the door 1000 is lifted to a safe height, the anti-fall device 400 returns to its initial position under the action of elasticity and comes into contact with the bottom of the door 1000 to prevent it from falling. In the specific implementation stage, the response time of the coil spring 500 should be less than the time required for the door 1000 to rise to trigger the anti-fall block 600, thereby ensuring that the coil spring 500 can be fully compressed during the rising phase of the door 1000.
[0037] If it is necessary to deactivate the fall protection, such as Figure 3As shown, the operator starts the motor via a manual button. Upon receiving a forward rotation command, the motor controls the support arm 800 to rotate counter-clockwise by a preset angle, which can be 90°, to position it beside the anti-fall block 600. Alternatively, an electromagnetic brake can be added to lock the support arm's position. When the bottom of the door 1000 is no longer supported by the support arm 800, it will slide downwards along the arc-shaped adjustment groove 430 and into the guide groove 410 to avoid obstructing the door 1000's descent.
[0038] Preferably, a lubricating material, such as a polytetrafluoroethylene coating, can be used between the sliding post 900 of the anti-fall block 600 and the lateral adjustment groove 420. By using a lubricating material, the frictional resistance between the sliding post 900 of the anti-fall block 600 and the lateral adjustment groove 420 can be reduced, thereby ensuring that the spring force of the helical spring 500 is the dominant force while reducing damage caused by friction, and thus improving the service life of the relevant components.
[0039] Furthermore, polishing or plating processes can be applied to the outer surface of the fall arrestor 600 and the inner surface of the guide groove 410 to reduce the coefficient of friction between the fall arrestor 600 and the guide groove 410, thereby improving the response speed of the fall arrestor 600. The polishing level and plating thickness can be determined according to the actual situation, and this embodiment does not impose too many restrictions.
[0040] For the materials of key components such as the fall arrestor block 600, the sliding column 900, and the support arm 800, the selection can be based on the material of the coil spring 500 to meet the requirements of high temperature resistance and corrosion resistance.
[0041] Preferably, the length of the transverse adjustment groove 420 is greater than the length of the helical spring 500, so that the anti-fall block 600 can be located at the position where the transverse adjustment groove and the arc adjustment groove 430 are connected after the support arm 800 is removed, so that it can slide downward along the arc adjustment groove 430 and into the guide groove 410.
[0042] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0043] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0044] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0045] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0046] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0047] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may include a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).
[0048] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A hot-dip galvanizing dusting door fall arrest device, characterized by, The utility model relates to a door frame lifting device, including: Door frame, the inside surface of side edge of door frame is provided with hoist on the top end, the inside surface of side edge of door frame is also provided with track, the track is located below hoist, hoist drives door body to slide in track through lifting hook; Safety device, safety device is fixedly arranged on the inside surface of side edge of door frame, and safety device is located between hoist and door body, the side of safety device is provided with guide groove, the inside surface of side of guide groove is provided with transverse adjustment groove and arc adjustment groove, the inside of transverse adjustment groove is provided with spiral spring, arc adjustment groove is located in the end of transverse adjustment groove and is communicated, arc adjustment groove extends along the inside of guide groove; Safety block, safety block is arranged in guide groove and is slidably connected with transverse adjustment groove and arc adjustment groove, the top end of safety block is provided with chamfer part that is contacted with door body; Capture mechanism, capture mechanism includes support arm that rotates in the side wall of safety device and motor that drives the rotation of support arm, support arm is located in the side of safety block, support arm is used to rotate to the bottom end of safety block and is contacted with the bottom surface, so that safety block keeps horizontal state.
2. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The top end and the bottom end of the safety block in the vertical direction are provided with chamfer parts, and the safety block is contacted with the door body through the chamfer parts.
3. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The length of the bottom surface of the safety block is equal to the length of the bottom surface of the transverse adjustment groove.
4. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The safety device is fixed on the inside surface of the side edge of the door frame by bolts.
5. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The side surface of the safety block is provided with a slide column slidably connected with the transverse adjustment groove and the arc adjustment groove.
6. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The top surface of the safety block is in contact with the top surface of the guide groove, and the bottom end of the guide groove is designed as an open type.
7. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The length of the transverse adjustment groove is less than the depth of the guide groove.
8. The drop stopping device for hot galvanizing door according to claim 1, characterized in that: The length of the transverse adjustment groove is greater than the length of the spiral spring, and the spiral spring is fixed at one end away from the arc adjustment groove.