Safe dismounting and mounting device for manhole cover of vertical unloader

Abstract

The utility model discloses a safe dismounting and mounting device for a manhole cover of a vertical unloader, which belongs to the technical field of manhole dismounting and mounting and comprises a support plate, a lifting ring and a rotating arm, the lifting ring is welded at the top end of the manhole cover, one end of the support plate is accurately welded on a shell ring of the vertical unloader, a steel pipe is mounted at the other end of the support plate, and the lower end of the rotating arm is inserted into the steel pipe. The upper half portion of the lifting hook is in clearance fit with the through hole in the rotating arm, the lifting hook can be adjusted through a nut, the lifting ring is welded to the top end of the manhole cover, the welding position needs to be guaranteed to be above the gravity center position of the manhole cover, balance of the manhole cover during lifting is guaranteed, hanging of a lifting chain for disassembly and assembly is not needed any more, and the preparation and installation processes of the lifting chain are omitted. The maintenance time is greatly shortened, and equipment hidden dangers and potential safety hazards are eliminated. The problem of bolt thread abrasion caused by manhole cover deviation due to the fact that the hoisting position is not in the gravity center is solved, article consumption is reduced, and the potential safety hazard that people are hit and injured by objects is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of manhole dismounting, and particularly relates to a vertical unloader manhole cover safe dismounting device. BACKGROUND

[0002] In the modern industrial production process, efficient conveying and processing of materials are key links to ensure production continuity and improve production efficiency. With the continuous expansion of industrial scale, the requirements for material conveying equipment in various industries are increasingly stringent. Traditional unloading equipment often exposes problems such as low unloading efficiency, high material residue, high energy consumption, and difficulty in adapting to complex working conditions when handling large amounts of materials. For example, in the chemical industry, the characteristics of materials are diverse, and traditional unloading equipment is difficult to accurately and efficiently complete the unloading task; in the field of mine exploitation, in the face of large-scale ore unloading demand, traditional equipment not only has slow unloading speed, but also easily causes material blockage and waste. In order to effectively solve these problems and meet the urgent needs of industrial production for efficient, energy-saving and stable unloading, vertical unloading devices emerge as the times require. It has unique vertical structure design and exhibits significant advantages in improving unloading efficiency, reducing energy consumption, reducing material residue and adapting to complex working conditions.

[0003] The vertical unloading device is a mechanical device used to unload materials from conveying equipment or storage containers and convey them to designated locations. Currently, vertical unloading devices have been widely used in chemical industry, mining, food industry, building materials industry and many other industries, becoming an indispensable key equipment to promote the development of modern industry and help various industries achieve qualitative leap in material processing. When the vertical unloading device is stopped for inspection and repair, the handle of the manhole is generally suspended by a lifting chain for lifting and dismounting the manhole. However, this position is not the center of gravity of the manhole, and displacement or deviation may occur during dismounting. Because the center of gravity is unstable, it is easy to cause the manhole bolt thread to wear and fall off, which may cause physical impact and other injuries to the maintenance personnel, posing a great safety risk. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects of displacement or deviation of manhole dismounting in the prior art, the utility model provides a vertical unloading device manhole cover safe dismounting device.

[0005] The utility model solves the technical problems by adopting the following technical scheme: a vertical unloading device manhole cover safe dismounting device, including support plate, lifting ring and swivel arm, the lifting ring is welded at the top end of the manhole cover, one end of the support plate is welded on the cylinder section of the vertical unloading device, the other end of the support plate is installed with steel pipe, the top end of the swivel arm is equipped with the lifting hook that can connect the lifting ring, the top end of the swivel arm is equipped with the through hole, the upper half of the lifting hook is inserted in the through hole on the swivel arm, the top of the lifting hook is connected with the nut in the screw thread, the lower end of the swivel arm is inserted in the steel pipe, and the lower half of the swivel arm is equipped with the limit ring.

[0006] As a further improvement of the utility model, the opening of the hook is provided with a safety lock, the safety lock is rotatably connected with the hook through a pin shaft, the safety lock prevents the lifting ring from being accidentally separated from the hook, and the safety of operation is improved.

[0007] As a further improvement of the utility model, the rotating arm is a degree bending arm, which meets the operation requirement and maximally saves space.

[0008] As a further improvement of the utility model, the lower portion of the nut is provided with a gasket to increase the contact area between the nut and the rotating arm and prevent the nut from loosening.

[0009] As a further improvement of the utility model, the upper half of the hook is clearance-fitted with the through hole on the rotating arm, and the clearance is 0.1-0.3 mm, so that the hook can be flexibly rotated in the through hole and has a certain stability.

[0010] As a further improvement of the utility model, the limiting ring and the rotating arm are integrally formed, which ensures the strength and reliability of the connection between the limiting ring and the rotating arm and enhances the strength and reliability of the connection between the limiting ring and the rotating arm.

[0011] As a further improvement of the utility model, the support plate, the rotating arm, the steel pipe and the hook are all made of Q235 steel material, which has good strength and toughness and meets the use requirement of the device.

[0012] As a further improvement of the utility model, the outer side of the rotating arm is provided with a rubber protective sleeve, the rubber protective sleeve 1 is made of rubber material with high elasticity, wear resistance and good buffering performance, which avoids the collision between the operator and the rotating arm during operation and provides reliable safety protection for the operator.

[0013] From the above technical scheme, it can be seen that the utility model has the beneficial effects that in the scheme, one end of the support plate is accurately welded on the cylinder section of the vertical unloader, the other end of the support plate is provided with a steel pipe, the lower end of the rotating arm is inserted into the steel pipe, the upper half of the hook is clearance-fitted with the through hole on the rotating arm, the lifting hook can be adjusted by the nut, the lifting ring is welded on the top end of the manhole cover, the welding position is ensured to be above the gravity center position of the manhole cover, the balance of the manhole cover during lifting is ensured, the lifting chain is no longer used for dismounting operation, the preparation and installation process of the lifting chain are removed, the maintenance time is greatly shortened, and the equipment and safety hazards are eliminated. The bolt thread abrasion problem caused by the deviation of the manhole cover due to the lifting position not being at the gravity center is eliminated, the consumption of articles is reduced, and the safety hazard of the personnel being hit by the articles is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the description of the drawings needed to use a brief introduction, obviously, the following description of the drawings in the utility model is only some embodiments, for those skilled in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 It is a structural schematic diagram of the utility model vertical unloader manhole cover safety dismounting device.

[0016] In the figure: 1, support plate;2, swing arm;3, steel pipe;4, lifting hook;5, limit ring;6, nut;7, lifting ring;8, washer. Specific embodiments

[0017] In order to make the purpose, features, advantages of the utility model more obvious and easy to understand, the following will be to the description of the drawings in the utility model, the technical scheme in the utility model is clearly and completely, obviously, the following described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the patent protection.

[0018] As Figure 1 Indicated, the utility model discloses a vertical unloader manhole cover safety dismounting device, including support plate 1, lifting ring 7 and swing arm 2, lifting ring 7 is welded in manhole cover top, one end of support plate 1 is welded on the cylinder section of vertical unloader, and the other end of support plate 1 is installed with steel pipe 3, and the top of swing arm 2 is equipped with the lifting hook 4 that can connect lifting ring 7, and the top of swing arm 2 is equipped with through-hole, and the upper half of lifting hook 4 is inserted in the through-hole on swing arm 2, and the top of lifting hook 4 is connected with nut 6 by screw thread, and the lower of nut 6 is equipped with washer 8, and the lower end of swing arm 2 is inserted in steel pipe 3, and the lower half of swing arm 2 is equipped with limit ring 5.

[0019] Among them, the swing arm 2 is the 90 degree bending arm of careful design, and the unique structure design fully considers the actual operation space and mechanical principle, while meeting the operation demand, the space is saved to the maximum. The outside of swing arm 2 is closely sleeved with rubber protective sleeve 11, the rubber protective sleeve 11 selects the rubber material of high elasticity, wear resistance and good cushioning performance, and its thickness is determined by strict calculation and test, which can effectively avoid the injury of operator in the operation process due to accidental collision, and provides reliable safety protection for the operator.

[0020] The device is mainly composed of support plate 1, lifting ring 7 and rotating arm 2 and other key components. The lifting ring 7 is firmly welded on the top end of the manhole cover by full welding process, and the welding process strictly follows the relevant standards. The weld is uniform and full, which ensures that there will be no dangerous situation such as falling off in the subsequent lifting operation. One end of the support plate 1 is also fixed on the cylinder section of the vertical unloader by strict welding method. Before welding, the surface of the cylinder section needs to be pretreated to remove oil stains, rust and other impurities, so as to ensure the welding quality. After welding, professional non-destructive testing equipment such as ultrasonic flaw detector is used to detect the weld in detail to ensure that there is no virtual welding, welding and other defects, so as to ensure that the connection strength can withstand various stresses in subsequent operation. The other end of the support plate 1 is provided with a steel pipe 3, and the connection method can be selected according to the actual working condition. If welding is adopted, the welding parameters need to be strictly controlled to ensure that the steel pipe 3 is connected tightly with the support plate 1 without looseness; if bolt connection is adopted, appropriate high-strength bolts need to be selected and fastened according to the specified torque to ensure reliable and stable connection.

[0021] The top end of the rotating arm 2 is provided with a hook 4 capable of accurately connecting the lifting ring 7. The top end of the rotating arm 2 is pre-processed to have a through hole with accurate size, and the upper half of the hook 4 is precisely inserted into the through hole on the rotating arm 2. In order to ensure that the hook 4 can rotate flexibly and has sufficient stability, the upper half of the hook 4 and the through hole on the rotating arm 2 adopt clearance fit, and the clearance is strictly controlled between 0.1-0.3mm. The top of the hook 4 is tightly connected with the nut 6 through thread, and when installing the nut 6, professional torque wrench is used to tighten according to the specified torque, so that the nut 6 can be used to accurately adjust the lifting hook 4 in the future, and the up and down position of the manhole cover can be adjusted slightly during disassembly and assembly, meeting the operation requirements under different conditions. At the same time, the gasket 8 is installed below the nut 6, which is made of high-quality metal material, and its surface is treated specially to increase the contact area between the nut 6 and the rotating arm 2, effectively disperse the pressure, and prevent the nut 6 from loosening during long-term use. The lower end of the rotating arm 2 is also accurately inserted into the steel pipe 3. Since the rotating arm 2 is a unique 90-degree bent arm, the operator needs to pay special attention to its angle direction during installation, and professional angle measuring tools are used for calibration to ensure that the rotating arm 2 can rotate flexibly in the steel pipe 3 after installation, realizing smooth operation process.

[0022] The support plate 1, the rotating arm 2, the steel pipe 3 and the lifting hook 4 are all made of Q235 steel material which has good strength and toughness and meets the use requirements of the device. One end of the support plate 1 is accurately welded on the cylinder section of the vertical unloader, and the welding is firm without virtual welding and welding off. After the welding is completed, the welding quality needs to be detected to ensure the connection strength. The steel pipe 3 is installed at the other end of the support plate 1 by welding or other reliable connection methods to ensure that the steel pipe 3 is tightly connected with the support plate 1 without loosening. The lower end of the rotating arm 2 is inserted into the steel pipe 3. Since the rotating arm 2 is a 90-degree bent arm, attention should be paid to the angle direction during installation to ensure that the rotating arm 2 can rotate flexibly. A through hole is formed at the top end of the rotating arm 2, and the upper half of the lifting hook 4 is inserted into the through hole. The upper half of the lifting hook 4 and the through hole on the rotating arm 2 are clearance fit, and the clearance is controlled within 0.1-0.3mm to ensure that the lifting hook 4 can rotate flexibly and has stability. The nut 6 is threadedly connected at the top of the lifting hook 4. The nut 6 can be used to adjust the lifting of the lifting hook 4, which is convenient for adjusting the position of the manhole cover during disassembly and assembly. A gasket 8 is installed below the nut 6 to increase the contact area between the nut 6 and the rotating arm 2 and prevent the nut 6 from loosening. The lifting ring 7 is welded at the top end of the manhole cover, and the welding position should be above the center of gravity of the manhole cover to ensure the balance of the manhole cover during lifting.

[0023] A safety lock is arranged at the opening of the lifting hook 4, and the safety lock is flexibly connected with the lifting hook 4 through a high-strength pin shaft. The safety lock is designed after multiple simulation tests and optimization, and can work reliably in various complex environments to effectively prevent the lifting ring 7 from accidentally falling out of the lifting hook 4, greatly improving the safety during operation. The limiting ring 5 and the rotating arm 2 are integrally formed. This design discards the traditional splicing or welding method, adopts an advanced mold manufacturing process, ensures the strength and reliability of the connection between the limiting ring 5 and the rotating arm 2, reduces the manufacturing process, and improves the production efficiency.

[0024] Through careful design and optimization of each component, the design significantly optimizes the operation process and greatly shortens the maintenance time. Before the transformation, the manhole cover needs to be suspended by a lifting chain for complicated operation, and the preparation and installation of the lifting chain take a long time. After the transformation, the preparation and installation of the lifting chain are no longer needed, and the entire disassembly process can be completed in about ten minutes, greatly improving the work efficiency and reducing the equipment downtime, providing a strong guarantee for the production and operation of the enterprise. Moreover, the device fundamentally eliminates the equipment and safety hazards. Through precise structural design, the problem of bolt thread wear caused by the deviation of the manhole cover due to the lifting position not being at the center of gravity is eliminated, which not only reduces the consumption of goods and saves production costs, but also effectively avoids the safety hazards of personnel being injured by objects, providing a solid guarantee for the safety production of the enterprise.

[0025] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A safety disassembly and assembly device for a vertical unloader manhole cover, characterized in that: The manhole cover lifting device comprises a support plate (1), a lifting ring (7) and a rotating arm (2), the lifting ring (7) is welded at the top end of the manhole cover, one end of the support plate (1) is welded on the cylinder section of the vertical unloader, the other end of the support plate (1) is provided with a steel pipe (3), the top end of the rotating arm (2) is provided with a hook (4) capable of being connected with the lifting ring (7), the top end of the rotating arm (2) is provided with a through hole, the upper half of the hook (4) is inserted into the through hole on the rotating arm (2), the top of the hook (4) is threadedly connected with a nut (6), the lower end of the rotating arm (2) is inserted into the steel pipe (3), and the lower half of the rotating arm (2) is provided with a limiting ring (5).

2. The safety device for dismounting a manhole cover of a vertical unloader according to claim 1, characterized in that: A safety lock is arranged at the opening of the hook (4) and is rotationally connected with the hook (4) through a pin shaft.

3. The safety device for dismounting a manhole cover of a vertical unloader according to claim 2, characterized in that: The rotating arm (2) is a 90-degree bending arm.

4. The safety device for dismounting a manhole cover of a vertical unloader according to claim 3, characterized in that: A gasket (8) is arranged below the nut (6).

5. A safety device for removing a manhole cover from a vertical unloader according to claim 4, characterized in that: The upper half of the hook (4) is clearance-fitted with the through hole on the rotating arm (2), and the clearance is 0.1-0.3 mm.

6. A safety device for removing a manhole cover from a vertical unloader according to claim 5, characterized in that: The limiting ring (5) and the rotating arm (2) are integrally formed.

7. The safety device for removing the cover of a vertical robot hole according to claim 5, characterized in that: The support plate (1), the rotating arm (2), the steel pipe (3) and the hook (4) are all made of Q235 steel.

8. The safety device for removing the cover of a vertical robot hole according to claim 5, characterized in that: A rubber protective sleeve is arranged outside the rotating arm (2).

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