Self-balancing hook for reaction kettle

Abstract

The utility model discloses a kind of self-balancing type lifting hooks for reaction kettle, it is related to reaction kettle maintenance technical field, including adjusting frame and the lifting hook body installed on adjusting frame;Adjusting frame includes the fixed frame, inner ring and outer ring nested in order from inside to outside;Fixed frame is rotatably installed in inner ring, inner ring is rotatably installed in outer ring, and the rotation axis of fixed frame and the rotation axis of inner ring are all horizontally arranged, and both are perpendicular to each other;The central position of fixed frame is provided with the mounting hole for installing lifting hook body;Mounting hole is vertically through fixed frame, and lifting hook body is rotatably installed in mounting hole;Outer ring top is integrally formed with the hanging part for being connected with workshop travelling crane lifting hook, and the stress center of hanging part is collinear with the central axis of mounting hole.Solve the existing hanging equipment cannot realize kettle cover three-dimensional posture fine adjustment, easy to cause kettle cover swing due to air flow disturbance and other problems, realize the self-balancing of kettle cover in hoisting process, improve the safety and accuracy of hoisting, guarantee the continuity of production.

Description

Technical Field

[0001] This utility model relates to the field of reactor maintenance technology, and in particular to a self-balancing hook for reactors. Background Technology

[0002] During the hoisting of heavy equipment and large covers (such as reactor lids), the objects being hoisted are often heavy structures that require precise docking with the base. However, existing hoisting equipment is mostly a fixed, rigid structure, which cannot achieve three-dimensional fine-tuning of the hoisted object's posture. When opening or closing, tilting can easily cause the docking surfaces to collide, damaging the equipment. At the same time, airflow disturbances in the workshop can easily cause the hoisted object to sway during hoisting, increasing not only the safety risks for operators but also prolonging the operation time. Utility Model Content

[0003] The purpose of this invention is to provide a self-balancing hook for a reaction vessel to solve the problems of existing lifting equipment being unable to achieve three-dimensional posture fine adjustment of the vessel lid and being prone to swaying due to airflow disturbance. This invention enables the vessel lid to achieve self-balancing during the lifting process, improves the safety and accuracy of the lifting, and ensures the continuity of production.

[0004] To achieve the above objectives, this utility model provides a self-balancing hook for a reactor, comprising an adjusting frame and a hook body mounted on the adjusting frame; the adjusting frame includes a fixed frame, an inner ring, and an outer ring nested from the inside out; the fixed frame is rotatably mounted in the inner ring, and the inner ring is rotatably mounted in the outer ring, with the rotation axis of the fixed frame and the rotation axis of the inner ring both horizontally arranged and perpendicular to each other; a mounting hole for mounting the hook body is provided at the center of the fixed frame; the mounting hole extends vertically through the fixed frame, and the hook body is rotatably mounted in the mounting hole; the top of the outer ring is integrally formed with a hooking part for connecting with a crane hook in a workshop, and the force center of the hooking part is collinear with the central axis of the mounting hole.

[0005] By adopting the above structure, the hook body's posture can be finely adjusted in three-dimensional space through a three-layer nested structure of fixed frame, inner ring, and outer ring, with each pair rotating vertically and horizontally. This solves the tilting problem during vessel lid hoisting, avoids flange surface collisions, and reduces the risk of sulfuric acid leakage. The force center of the hook joint is collinear with the central axis of the mounting hole, ensuring uniform force transmission during hoisting, reducing hook tilting caused by uneven force distribution, and improving hoisting stability. The hook body is rotatably installed in the mounting hole, allowing for flexible adjustment of the vessel lid angle to meet the precise docking requirements of the vessel flange surface, shortening docking time and ensuring production continuity.

[0006] Preferably, both the inner and outer rings are circular structures. This design ensures that the circular structure distributes the force evenly, stably bearing the heavy load of the vessel lid, while reducing jamming during rotation and guaranteeing smoothness during adjustment.

[0007] Preferably, the left and right sides of the fixing frame are respectively provided with fixing frame rotating shafts extending to both sides, and the inner ring is provided with an inner ring rotating hole for the fixing frame rotating shaft to pass through; the fixing frame rotating shaft is rotatably installed in the inner ring rotating hole; the front and rear sides of the inner ring are respectively provided with inner ring rotating shafts extending to both sides, and the outer ring is provided with an outer ring rotating hole corresponding to the inner ring rotating shaft for it to pass through; the inner ring rotating shaft is rotatably installed in the outer ring rotating hole.

[0008] Preferably, detachable bearing seats are provided on the inner ring and the outer ring respectively, and a bearing is fixedly installed in the bearing seat. The bearing seats form the inner ring rotating hole and the outer ring rotating hole.

[0009] Preferably, the bearing housing is provided with lubrication holes.

[0010] Preferably, a deep groove ball bearing is provided between the fixed frame shaft and the inner ring rotating hole; a self-aligning roller bearing is provided between the inner ring shaft and the outer ring rotating hole.

[0011] Preferably, the hook body includes a vertically arranged mounting column and a hook fixed to the bottom of the mounting column; the top of the mounting column is provided with a threaded section, the mounting column is inserted into the mounting hole from bottom to top, and a mounting nut is tightened on its top, with a thrust ball bearing clamped between the mounting nut and the top of the mounting hole. The thrust ball bearing bears the axial load of the hook body, reduces the rotational friction between the mounting column and the mounting hole, and makes the horizontal rotation of the hook body (driving the vessel lid) more flexible, facilitating the adjustment of the vessel lid's mating angle.

[0012] Preferably, a retaining cover is fitted onto the mounting post at the bottom of the mounting nut. The retaining cover is a downward-opening conical structure that fastens onto the upper part of the thrust ball bearing. The mounting nut abuts against the upper part of the retaining cover, pressing the retaining cover tightly onto the upper cover of the thrust ball bearing. The surrounding sidewalls of the retaining cover extend downward to cover the thrust ball bearing without contacting the mounting bracket. The conical retaining cover covering the thrust ball bearing can prevent dust and debris in the workshop from entering the bearing, avoiding bearing failure due to wear caused by impurities and extending its service life.

[0013] Preferably, the mounting portion includes a lifting ring located directly above the mounting hole and connecting arms disposed at the bottom of the lifting ring and connecting the lifting ring to the outer ring. Multiple connecting arms are provided, and these multiple connecting arms are evenly fixed around the perimeter of the outer ring. This structural arrangement ensures that the multiple connecting arms are evenly distributed, allowing the force on the lifting ring to be evenly transferred to the outer ring through the connecting arms. This prevents excessive localized stress on the outer ring, which could lead to deformation, and improves the overall structural load-bearing capacity.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are: This invention relates to a self-balancing hook for a reaction vessel, which solves the problems in existing lifting equipment such as the inability to achieve three-dimensional micro-adjustment of the vessel lid and the ease with which the vessel lid sways due to airflow disturbance. This invention enables the vessel lid to achieve self-balancing during the lifting process, improving the safety and accuracy of the lifting and ensuring the continuity of production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation position structure of a self-balancing hook for a reaction vessel according to this utility model; Figure 2 This is a schematic diagram of the structure of a self-balancing hook for a reaction vessel according to this utility model; Figure 3 This is a structural diagram of the fixing frame and the hook body; Figure 4 yes Figure 3 Middle AA side sectional view.

[0016] In the diagram, 1. Adjustment frame, 11. Fixing frame, 111. Mounting hole, 112. Fixing frame pivot, 12. Inner ring, 121. Inner ring pivot hole, 122. Inner ring pivot, 13. Outer ring, 131. Outer ring pivot hole, 132. Lifting ring, 133. Connecting arm, 2. Hook body, 21. Mounting column, 22. Hook, 23. Mounting nut, 24. Thrust ball bearing, 25. Buckle cover. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The orientations mentioned in this specification are based on the orientation of the self-balancing hook for the reactor of this utility model during normal operation, and do not limit the orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0019] like Figure 1 and Figure 2 As shown, a self-balancing hook for a reaction vessel is installed at the bottom of a workshop overhead crane. This hook is suitable for loads of 5-15kN. It includes an adjusting frame 1 and a hook body 2 mounted on the adjusting frame 1. The adjusting frame 1 includes a fixed frame 11, an inner ring 12, and an outer ring 13 nested from the inside out. Both the inner ring 12 and the outer ring 13 are circular ring structures, which facilitates rotational installation and ensures smooth rotation.

[0020] like Figure 2 , Figure 3 and Figure 4 As shown, the fixing frame 11 is rotatably installed in the inner ring 12, and the rotating shaft of the fixing frame 11 is set horizontally; the center position of the fixing frame 11 is provided with a mounting hole 111 for installing the hook body 2; the mounting hole 111 is set vertically and passes through the fixing frame 11 from top to bottom.

[0021] The hook body 2 includes a vertically arranged mounting post 21 and a hook 22 fixed to the bottom of the mounting post 21; the top of the mounting post 21 is provided with a threaded section, the mounting post 21 is inserted into the mounting hole 111 from bottom to top, and a mounting nut 23 is tightened on its top, so that the hook body 2 is suspended on the fixed frame 11 by the mounting nut 23.

[0022] To facilitate angle adjustment of the load at the bottom, the hook body 2 is rotatably installed within the mounting hole 111. Specifically, the installation method involves clamping the thrust ball bearing 24 between the mounting nut 23 and the top of the mounting hole 111. A certain rotational clearance exists between the mounting column 21 and the mounting hole 111 to ensure normal rotation of the mounting column 21 within the mounting hole 111. The lower ring of the thrust ball bearing 24 is fitted onto the mounting column 21 and supported on the fixing frame 11. The mounting nut 23 presses the upper ring of the thrust ball bearing 24 tightly onto the lower ring. To prevent the thrust ball bearing 24 from wobbling, a mounting groove is provided at the top of the fixing frame 11. The lower ring of the thrust ball bearing 24 engages in the mounting groove, thus positioning the thrust ball bearing 24. The thrust ball bearing is a 51212 (rated static load 58kN); the thrust ball bearing 24 can withstand axial loads, ensuring smooth rotation of the hook body 2 within the mounting hole 111.

[0023] A retainer 25 is fitted onto the mounting post 21 at the bottom of the mounting nut 23. The retainer 25 is a downward-opening conical structure that covers the upper part of the thrust ball bearing 24. The mounting nut 23 abuts against the upper part of the retainer 25, pressing the retainer 25 tightly onto the upper cover of the thrust ball bearing 24. The surrounding sidewalls of the retainer 25 extend downward to cover the thrust ball bearing 24, but do not contact the mounting bracket 11. The retainer 25 prevents dust, debris, etc., from entering the thrust ball bearing 24, protecting the thrust ball bearing 24 and extending its service life.

[0024] The fixed frame 11 has fixed frame rotating shafts 112 extending to both sides on its left and right sides. Each fixed frame rotating shaft 112 includes a trapezoidal block extending from the side wall of the fixed frame 11 to the left and right sides, and a circular shaft at the end of the trapezoidal block. The inner ring 12 has an inner ring rotating hole 121 for the circular shaft to pass through. The circular shaft is rotatably installed in the inner ring rotating hole 121. Its rotation can be frictional. In this embodiment, to reduce friction, a bearing seat is fixed to the inner ring 12. The bearing seat includes a base fixed to the inner ring 12 and a top seat detachably mounted on the base by bolts. After the base and top seat are installed, the bearing is fixedly clamped inside. The bearing is sleeved on the circular shaft. Because this position mainly experiences radial force (load during pitch rotation) and the axial force is extremely small, in this embodiment, the bearing seat at this position is preferably a deep groove ball bearing, with the recommended model being 6212ZZ, rated dynamic load 26.5kN. Deep groove ball bearings have advantages such as low friction coefficient, high limiting speed, and simple structure, and are suitable for bearing radial loads.

[0025] The inner ring 12 is rotatably mounted in the outer ring 13, and the axis of rotation of the inner ring 12 is horizontally arranged; the axis of rotation of the fixing bracket 11 is perpendicular to the axis of rotation of the inner ring 12. The inner ring 12 has inner ring rotating shafts 122 extending to both sides on its front and rear sides, each inner ring rotating shaft 122 including a trapezoidal block fixed to the inner ring 12 and a circular shaft at the end of the trapezoidal block. The outer ring 13 has an outer ring rotating hole 131 corresponding to the inner ring rotating shaft 122, through which the circular shaft passes; the inner ring rotating shaft 122 is rotatably mounted in the outer ring rotating hole 131. Its rotation can be frictional. In this embodiment, to reduce friction, a bearing seat is also fixed on the outer ring 13. The installation method of this bearing seat is the same as that of the bearing seat on the inner ring 12, and will not be described in detail here. Because the inner ring 12 and outer ring 13 are mainly subjected to radial force (lateral force from the swinging of heavy objects), accompanied by a slight axial force, a self-aligning roller bearing is preferred for this bearing position. The recommended model is 22212CA / W33, with a rated dynamic load of 98kN. Self-aligning roller bearings can automatically align themselves and withstand large radial loads and a certain amount of axial load, ensuring the stability of the inner ring 12's rotation within the outer ring 13.

[0026] To ensure proper lubrication of each bearing, lubrication holes are provided at the corresponding bearing housing positions, through which lubricant can be added to the rotating parts.

[0027] The fixing frame 11 is rotatably installed in the inner ring 12, and the inner ring 12 is rotatably installed in the outer ring 13. This structural design allows the fixing frame 11 to rotate in one direction in the inner ring 12, and the inner ring 12 to rotate in another vertical direction in the outer ring 13. This allows the hook to be adjusted in three-dimensional space, thereby precisely adjusting the position and angle of the reactor lid, avoiding the reactor lid tilting and causing the flange surface to collide, effectively ensuring the sealing performance of the reactor and reducing the risk of sulfuric acid leakage.

[0028] The outer ring 13 has an integrally formed top with a hook for connecting to the overhead crane hook in the workshop. The force center of the hook is collinear with the central axis of the mounting hole 111. This ensures uniform force transmission during hoisting and prevents the hook from tilting due to uneven force. The hook includes a lifting ring 132 located directly above the mounting hole 111 and connecting arms 133 located at the bottom of the lifting ring 132 and connecting the lifting ring 132 and the outer ring 13. Multiple connecting arms 133 are provided, and the multiple connecting arms 133 are evenly fixed around the periphery of the outer ring 13. In this embodiment, two connecting arms 133 are provided, symmetrically arranged on both sides of the lifting ring 132, and the line connecting the two is perpendicular to the inner ring pivot 122. In practical applications, four or six connecting arms 133 can also be designed.

[0029] The center of force of the hook is collinear with the central axis of the mounting hole 111, ensuring uniform force transmission and reducing swaying during hoisting. Meanwhile, the bearings and lubrication holes in each rotating part reduce rotational friction, making the hook rotation more flexible and stable. This effectively resists airflow disturbances within the workshop, reduces the swaying of the vessel lid during hoisting, and improves operator safety.

[0030] The swaying of the suspended object is essentially a left-right / back-forward swing caused by lateral force (airflow thrust or inertial force). The dual-axis vertical rotation structure of the hook's fixing frame 11 and inner ring 12, and inner ring 12 and outer ring 13, can cancel out the swaying through "passive follow-up" and "gravity reset".

[0031] 1. The cancellation of left and right swaying (the front and back rotation axes of inner ring 12 and outer ring 13) When airflow or inertia causes the suspended object to sway to the left or right, a lateral force is generated, forcing the object to swing left and right around its vertical axis. At this time, the inner ring 12 rotates freely within the outer ring via a front-to-back inner ring pivot (which engages with the outer ring pivot hole of the outer ring 13). The lateral force generated by the swaying drives the inner ring 12 to rotate synchronously around the front-to-back pivot, causing the suspended object to rotate slightly in accordance with the direction of the swaying, avoiding increased swaying due to rigid resistance. Simultaneously, the weight of the suspended object is transmitted to the inner ring through the fixing frame, forming a "resetting torque"—when the lateral force disappears, gravity pulls the inner ring to rotate in the opposite direction, returning the suspended object to its vertical equilibrium position. The self-aligning roller bearing in this part plays a crucial role: it can withstand a large radial load (the lateral force generated by the swaying) and has self-aligning capability, allowing the inner ring to rotate flexibly within a certain angle, avoiding jamming, and ensuring the smooth release of swaying energy.

[0032] 2. Counteracting forward and backward swaying (left and right rotation axes of the fixing frame 11 and inner ring 12) When the suspended object sways forward or backward due to airflow or inertia, it generates a lateral force in the forward and backward directions, causing the object to swing back and forth around its vertical axis. At this time, the fixing frame rotates freely within the inner ring via its left-right rotating shafts (which engage with the inner ring rotating hole of the inner ring 12). The forward and backward lateral force drives the fixing frame to rotate synchronously around the left-right rotating shafts, causing the suspended object to rotate in the direction of the sway, reducing rigid impact. Similarly, the weight of the suspended object is transmitted to the fixing frame through the hook body, forming a "resetting torque." After the lateral force disappears, it pulls the fixing frame to rotate in the opposite direction, restoring vertical balance. The deep groove ball bearing in this part has a low coefficient of friction, ensuring that the fixing frame 11 responds quickly to forward and backward swaying, allowing for flexible adjustment and preventing accumulated swaying.

[0033] When this invention is used to hoist the lid of a continuous acidolysis reactor, hooks 22 are used to attach the lid to the hoisting points. Because this invention possesses three-dimensional self-balancing capabilities, it can automatically adapt to and counteract tilting and swaying caused by center of gravity shifts or airflow, ensuring that the lid flange face and the reactor body flange face remain parallel and close during hoisting. This achieves precise, collision-free docking, effectively protecting the sealing surface and preventing sulfuric acid leakage.

[0034] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A self-balancing hook for a reaction vessel, characterized in that: Includes an adjustment frame and a hook body mounted on the adjustment frame; The adjustment frame includes a fixed frame, an inner ring, and an outer ring nested from the inside out; the fixed frame is rotatably installed in the inner ring, the inner ring is rotatably installed in the outer ring, and the rotation axis of the fixed frame and the rotation axis of the inner ring are both horizontally arranged and perpendicular to each other; The fixing frame has a mounting hole at its center for mounting the hook body; the mounting hole extends vertically through the fixing frame, and the hook body is rotatably mounted in the mounting hole; The top of the outer ring is integrally formed with a hook for connecting with the hook of the workshop crane, and the stress center of the hook is collinear with the central axis of the mounting hole.

2. The self-balancing hook for a reaction vessel according to claim 1, characterized in that: Both the inner ring and the outer ring are circular ring structures.

3. The self-balancing hook for a reaction vessel according to claim 1, characterized in that: The fixing frame has a fixing frame pivot extending to both sides on its left and right sides respectively, and the inner ring has an inner ring pivot hole for the fixing frame pivot to pass through; the fixing frame pivot is rotatably installed in the inner ring pivot hole. The inner ring has inner ring pivots extending to both sides on its front and rear sides, and the outer ring has outer ring pivot holes corresponding to the inner ring pivots for them to pass through; the inner ring pivots are rotatably installed in the outer ring pivot holes.

4. A self-balancing hook for a reaction vessel according to claim 3, characterized in that: The inner ring and the outer ring are respectively provided with detachable bearing seats, and the bearings are fixedly installed in the bearing seats. The bearing seats form the inner ring rotating hole and the outer ring rotating hole.

5. A self-balancing hook for a reaction vessel according to claim 4, characterized in that: The bearing housing is provided with lubrication holes.

6. A self-balancing hook for a reactor according to claim 4, characterized in that: A deep groove ball bearing is provided between the fixed frame shaft and the inner ring rotating hole; a self-aligning roller bearing is provided between the inner ring shaft and the outer ring rotating hole.

7. A self-balancing hook for a reaction vessel according to claim 1, characterized in that: The hook body includes a vertically arranged mounting column and a hook fixed to the bottom of the mounting column; the top of the mounting column is provided with a threaded section, the mounting column is inserted into the mounting hole from bottom to top, and a mounting nut is tightened on its top, and a thrust ball bearing is clamped between the mounting nut and the top of the mounting hole.

8. A self-balancing hook for a reaction vessel according to claim 7, characterized in that: A retainer is fitted on the mounting post at the bottom of the mounting nut. The retainer is a downward-opening conical structure that covers the upper part of the thrust ball bearing. The mounting nut abuts against the upper part of the retainer, pressing the retainer tightly onto the upper cover of the thrust ball bearing. The surrounding sidewalls of the retainer extend downward to cover the thrust ball bearing, but do not contact the fixing frame.

9. A self-balancing hook for a reaction vessel according to claim 1, characterized in that: The mounting part includes a lifting ring located directly above the mounting hole and a connecting arm disposed at the bottom of the lifting ring and connecting the lifting ring to the outer ring. Multiple connecting arms are provided, and the multiple connecting arms are evenly fixed around the perimeter of the outer ring.

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