Well ring hoisting device

Abstract

The utility model discloses a walling crib hoisting device, belongs to the technical field of building construction machinery, and solves the technical problems that a traditional hoisting tool is easy to slip and is damaged due to local stress as a walling crib of a concrete inspection well has no preset hoisting point. According to the technical scheme, a hoisting barrel is placed in a walling crib, a plurality of supporting rods evenly distributed in the circumferential direction are horizontally moved through barrel wall supporting holes, and the tail ends of the supporting rods are inserted into the bottom of a step on the inner wall of the walling crib or the edge of the bottom of the walling crib to achieve lifting; a horizontal first limiting plate is arranged on a barrel bottom plate at the bottom of the hoisting barrel, the inner ends of the supporting rods are limited between the barrel bottom plate and the first limiting plate, and the supporting rods are forced to keep a horizontal stable state when lifting the walling crib through downward pressure of the first limiting plate. The device is used for safely hoisting the walling crib of the concrete inspection well, the damage risk of the walling crib is remarkably reduced, the hidden danger of slipping is effectively eliminated, and the mounting efficiency and the positioning precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a well ring hoisting device. Background Technology

[0002] The hoisting of concrete inspection well rings has long relied on manual handling or general-purpose lifting tools. When handled manually, the rings are heavy and bulky, and multiple people operating them easily bump and damage the edges, resulting in a high breakage rate, affecting sealing performance and increasing costs. When using general-purpose lifting tools (such as wire ropes and hooks), the rings have poor compatibility due to their ring structure without pre-set lifting points: wire ropes are prone to slippage, and hooks can cause localized stress concentration and cracking; furthermore, inaccurate positioning during hoisting requires repeated adjustments, with each installation taking over 20 minutes.

[0003] The root cause of these problems lies in the lack of a dedicated stress point for the well ring, making it difficult to match its structural characteristics with traditional methods. Developing specialized tools presents challenges: external clamping devices are prone to damaging the well ring and require precise dimensional adaptation; internal support devices must address technical difficulties such as simultaneous multi-point, multi-directional stress within confined spaces and reliable locking under vibration. This results in a lack of efficient and low-damage hoisting solutions in this field, hindering construction quality and efficiency. Utility Model Content

[0004] This utility model provides a well ring hoisting device, which can solve the problem that when hoisting concrete well rings without preset hoisting points, the special shape of the ring structure makes it impossible for general hoisting tools (such as steel wire ropes and hooks) to reliably grasp them, which easily leads to slippage or local stress concentration and damage to the well ring.

[0005] To achieve these and other advantages according to the present invention, a well ring lifting device is provided, comprising:

[0006] The hoisting bucket has at least two hoisting holes evenly arranged along its circumference on the side wall near its top and at least three support holes evenly arranged along its circumference on the side wall near its bottom. Support rods are movably inserted into the support holes. The bottom of the hoisting bucket is provided with a horizontal bucket bottom plate. The bucket bottom plate is provided with a horizontal first limiting plate corresponding to each support rod. The first limiting plate is fixedly connected to the bucket bottom plate by at least two vertical connecting rods. The support rod is movably disposed between its corresponding first limiting plate and the bucket bottom plate.

[0007] Preferably, in the well ring hoisting device, a horizontal turntable is rotatably arranged in the middle of the bottom plate of the barrel, and connecting plates corresponding to each support rod are evenly arranged along the circumference of the turntable. The connecting plates are hinged to one end of the support rod.

[0008] Preferably, in the well ring hoisting device, a stop block corresponding to each connecting plate is provided on the bottom plate of the bucket. When the connecting plate rotates with the turntable and abuts against its corresponding stop block, the support rod moves completely into the hoisting bucket.

[0009] Preferably, in the well ring hoisting device, a first mounting hole is provided in the middle of the bottom plate of the bucket, a first mounting rod is provided at the bottom of the turntable, the first mounting rod is rotatably inserted into the first mounting hole, and a limit member is provided on the first mounting rod located below the bottom plate of the bucket.

[0010] Preferably, in the well ring hoisting device, an annular support groove is provided on the bottom plate of the barrel, and multiple balls are evenly rotatably arranged in the support groove. The first mounting hole is located in the middle of the support groove, and the turntable is located on the top of the balls in the support groove and slides tangentially with the balls.

[0011] Preferably, in the well ring hoisting device, the limiting member is a first limiting rod, the first mounting rod is provided with a first limiting hole, and the first limiting rod is inserted into the first limiting hole.

[0012] Preferably, in the well ring hoisting device, a limiting cylinder is sleeved on the first mounting rod, and the limiting cylinder is located between the bottom plate of the barrel and the first limiting rod.

[0013] Preferably, in the well ring hoisting device, a non-circular auxiliary rotating block is provided at the top of the first mounting rod.

[0014] Preferably, in the well ring hoisting device, one end of the support rod is provided with a vertical second mounting hole, the connecting plate is provided with a third mounting hole corresponding to the second mounting hole, a second mounting rod is inserted into the second mounting hole and the third mounting hole, a support plate is provided at the bottom end of the second mounting rod, and a horizontal second limiting hole is provided on the second mounting rod located on the connecting plate, a second limiting rod is inserted into the second limiting hole.

[0015] This utility model has at least the following beneficial effects:

[0016] I. Core Structure Addresses the Challenge of Lack of Lifting Points: By vertically placing the lifting bucket inside the manhole ring, a support rod is used to move horizontally outward from the support hole on the side wall of the lifting bucket, allowing the end of the support rod to insert into and support the bottom of the inner wall step or the bottom edge of the manhole ring. This design avoids the defect of the manhole ring lacking pre-set lifting points, directly applying the lifting force to the strongest bottom area of ​​the manhole ring structure.

[0017] 2. Eliminate slippage and stress concentration: At least three circumferentially evenly distributed support rods simultaneously lift the bottom of the well ring, so that the lifting force is evenly distributed throughout the entire ring structure, completely avoiding the damage problems caused by common lifting tools (wire rope slippage, local stress of hook).

[0018] 3. The lever balance of the first limiting plate ensures stability: The inner end of the support rod is located between the bottom plate of the bucket and the first limiting plate; when the outer end of the support rod lifts the well ring, the first limiting plate applies a downward constraint force to the inner end of the support rod through the rigidly connected vertical connecting rod, which forms a lever balance with the downward pressure of the well ring on the outer end of the support rod, forcing the support rod to maintain a horizontal posture and preventing the well ring from tilting or swaying during hoisting, which could lead to sudden changes in stress.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a top view of the structure of the well ring hoisting device in one of the technical solutions of this utility model when the support rod is retracted into the hoisting bucket;

[0021] Figure 2 This is a top view schematic diagram of the hoisting bucket structure in one of the technical solutions of this utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the bottom plate and the turntable in one of the technical solutions of this utility model;

[0023] Among them, 1-auxiliary rotating block, 2-bottom plate of the barrel, 3-first limiting plate, 4-support rod, 5-lifting barrel, 6-stop block, 7-connecting plate, 8-turntable, 9-support groove, 10-first mounting hole, 11-second limiting rod, 12-second mounting rod, 13-first mounting rod, 14-ball bearing, 15-support plate, 16-first limiting rod, 17-limiting cylinder. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0025] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] like Figure 1 As shown, this utility model provides a well ring hoisting device, including:

[0027] The hoisting bucket 5 has at least two hoisting holes evenly arranged along its circumference on the side wall near its top and at least three support holes evenly arranged along its circumference on the side wall near its bottom. Support rods 4 are movably inserted into the support holes. The bottom of the hoisting bucket 5 is provided with a horizontal bucket bottom plate 2. The bucket bottom plate 2 is provided with a horizontal first limiting plate 3 corresponding to each support rod 4. The first limiting plate 3 is fixedly connected to the bucket bottom plate 2 by at least two vertical connecting rods. The support rod 4 is movably arranged between its corresponding first limiting plate 3 and the bucket bottom plate 2.

[0028] The well ring hoisting device of this utility model mainly includes several core parts: hoisting bucket 5, support rod 4, bucket bottom plate 2, and first limiting plate 3.

[0029] The lifting bucket 5 is a cylindrical main component. At least two lifting holes are evenly spaced on the upper half (near the top) of the bucket wall. These holes are for threading lifting straps or hooks, facilitating the lifting of the entire device by cranes or other equipment. At least three support holes are evenly spaced on the lower half (near the bottom) of the bucket wall.

[0030] There are at least three support rods 4, corresponding to the support holes. These are several long, narrow rods. Each support rod 4 is telescopic and can be inserted into the support hole at the bottom of the lifting bucket 5. When needed, the rod can be pushed out of the hole; when not in use, it can be retracted.

[0031] The bottom plate 2 is a horizontal circular plate that is fixedly installed at the bottom of the hoisting bucket 5, which is equivalent to the "bottom cover" of the bucket.

[0032] A first limiting plate 3 is installed on the bottom plate 2 of the bucket, corresponding to the position of each support rod 4. This first limiting plate 3 is fixedly connected to the bottom plate 2 via at least two vertical connecting rods. The connecting rods are evenly distributed on both sides of the support rod 4, providing space for the support rods to move and preventing them from affecting the flexible movement of the support rods. The two ends of the connecting rods are welded to the lower surface of the first limiting plate 3 and the bottom plate 2, respectively, forming a rigid frame. When the outer end of the support rod 4 (the end located outside the lifting bucket 5) lifts the well ring, its inner end (the end located inside the lifting bucket 5) is subjected to a downward restraining force from the first limiting plate 3. This force is transmitted to the bottom plate 2 through the connecting rods, forming a lever balance system.

[0033] The working principle of the manhole ring hoisting device in this utility model is as follows: The hoisting strap is passed through the hoisting hole at the top of the hoisting bucket 5, and the device is suspended from the hook of the lifting equipment (such as a small crane). The lifting equipment is operated to vertically lower the hoisting bucket 5 into the interior of the concrete manhole ring to be hoisted. At this time, the support rod 4 is in the retracted state (retracted inside the hoisting bucket 5). The operator can reach inside the hoisting bucket 5 and move (pull out) the support rod 4 outward through the support hole. The extended end of the support rod 4 is precisely inserted into the bottom of the step on the inner wall of the manhole ring or into the pre-raised gap at the bottom of the manhole ring, supporting the bottom of the manhole ring. When the outer end of the support rod 4 is inserted into the bottom / step of the manhole ring to prepare for load-bearing, its end inside the hoisting bucket 5 (the inner end) is located in the space between the first limiting plate 3 and the bucket bottom plate 2. The first limiting plate 3, through the rigid connection structure of the vertical connecting rod, applies a downward constraint force to the inner end of the support rod 4, ensuring that the support rod 4 is in a lever balance state when lifting the manhole ring, preventing the support rod 4 from tilting or swaying due to force during hoisting; ensuring that the support rod 4 remains as horizontal as possible, so that its outer end can be stably and completely supported on the bottom / step of the manhole ring, avoiding excessive local stress or slippage due to angle tilt. The lifting equipment is slowly raised, and the crane transports the hoisted manhole ring to above the target inspection manhole chamber. The device is slowly lowered to place the manhole ring in the predetermined position, which can be precisely aligned by fine-tuning the lifting rope or manual assistance. After the manhole ring is in place, the support rod 4 is moved (pulled back) inward from inside the lifting bucket 5, so that its end is out of the lifting position, and then the empty lifting device is lifted from the center of the manhole ring.

[0034] This utility model has at least the following beneficial effects:

[0035] 1. Solved the problem of hoisting well rings without lifting points: By inserting the end of the support rod 4 into and supporting the bottom / step of the well ring, the problem of lacking dedicated lifting points is perfectly solved, eliminating the need for general lifting tools that are prone to slippage.

[0036] 2. Protect the integrity of the well ring and minimize the breakage rate: Force is applied to the strongest part of the well ring, the bottom, or the root of the inner step. Edge damage is eliminated, preventing edge breakage caused by traditional lifting tools. Multiple support rods are evenly distributed around the circumference to support the well ring evenly and stably. The downward pressure of the first limiting plate 3 ensures that the support rods 4 always maintain a horizontal and stable posture while supporting the well ring, avoiding localized stress concentration or impacts at the bottom of the well ring caused by changes in the angle of the support rods 4 or vibration. This is one of the core guarantees for reducing the breakage rate.

[0037] 3. Significantly Improved Lifting Stability and Positioning Accuracy: The downward pressure provided by the first limiting plate 3 effectively counteracts the lever lifting effect and vibration that may occur during lifting by the support rod 4, making the well ring appear as if it were transported on a stable rigid pallet, greatly reducing swaying and tilting. The lifting bucket 5 structure assists in maintaining verticality. Bottom support and high stability allow the well ring to be placed in the target position more accurately and quickly, reducing high-altitude adjustment time and risks.

[0038] 4. Simple and reliable structure, low cost, and safe operation: The first limiting plate 3, together with the connecting rod and the bottom plate 2, forms a downward pressure balance mechanism. This mechanism solves the key stability problem using a minimalist mechanical principle (lever balance + friction), eliminating the need for complex components. It can be made from scrap steel bars and plates, making the materials readily available. The support rod 4, inserted into the bottom / step, provides mechanical self-locking, and the downward pressure of the first limiting plate 3 prevents the support rod 4 from shifting or retracting, providing double protection for lifting safety. This completely avoids the risks associated with manual handling.

[0039] In another technical solution, such as Figure 1 , Figure 3 As shown, in the well ring hoisting device, a horizontal turntable 8 is rotatably arranged in the middle of the bottom plate 2 of the barrel. The edge of the turntable 8 is evenly provided with connecting plates 7 corresponding to each support rod 4 along its circumference. The connecting plates 7 are hinged to one end of the support rod 4.

[0040] In this technical solution, a freely rotatable disc, namely a turntable 8, is horizontally installed at the center of the bottom plate 2 at the bottom of the hoisting bucket. The turntable 8 is mounted on the bottom plate 2 via a simple rotating mechanism (such as a shaft-hole fit), allowing it to be easily rotated by hand or with tools. Several connecting plates 7 are evenly welded (or fixed) around the circumference of the turntable 8, with the number and position of the connecting plates 7 corresponding one-to-one with the support rods 4. The outer end of each connecting plate 7 is hinged to the corresponding end of the support rod 4 located inside the hoisting bucket.

[0041] Inside the lifting bucket, rotating the turntable 8 clockwise / counterclockwise rotates all the connecting plates 7, which then simultaneously pushes all the support rods 4 outward through the hinge points, inserting them into the bottom support position of the well ring. Rotating the turntable 8 in the opposite direction rotates all the connecting plates 7, simultaneously pulling all the support rods 4 inward through the hinge points, disengaging them from the bottom of the well ring. In other words, rotating the central turntable 8 synchronously controls the extension or retraction of all the support rods 4!

[0042] This technical solution replaces the individual push-pull operation with a single rotation motion, increasing the speed of support rod 4's retraction and extension by more than 4 times. Mechanical linkage forces all support rods 4 to be of consistent length and move synchronously, eliminating human error, protecting the well ring, and making hoisting more stable. It can be operated by a single person, making it convenient.

[0043] In another technical solution, such as Figure 1As shown, in the well ring hoisting device, there are stop blocks 6 on the bottom plate 2 of the bucket corresponding to each connecting plate 7. When the connecting plate 7 rotates with the turntable 8 and abuts against its corresponding stop block 6, the support rod 4 moves completely into the hoisting bucket 5.

[0044] This technical solution adds a stop block 6 to the bottom plate 2 corresponding to each connecting plate 7. When the rotating turntable 8 causes the connecting plate 7 to contact the stop block 6, the support rod 4 is fully retracted into the hoisting bucket 5, forming a rigid stop point. When retracting the support rod 4, the turntable 8 is rotated until all connecting plates 7 abut against the corresponding stop block 6 (which can be determined by touch / visual inspection), at which point the support rod 4 will definitely be in the fully retracted state.

[0045] This technical solution provides clear physical feedback on the retraction endpoint, avoiding jamming problems caused by the support rod 4 not being fully retracted, and improving the reliability and safety of operation in narrow spaces.

[0046] In this technical solution, the stop block 6 is adjustablely mounted on the bottom plate 2 of the barrel using bolts. The surface of the bottom plate 2 is provided with an arc-shaped adjustment groove centered on the first mounting hole 10. During installation, after rotating the turntable 8 to fully retract the support rod 4, the bolts are loosened to move the stop block 6 to the contact surface of the connecting plate 7, and then the bolts are tightened to fix the position of the stop block, achieving precise calibration of the hard stop point. The adjustable position design of the stop block eliminates manufacturing and assembly errors, ensuring that all support rods retract synchronously with zero deviation.

[0047] In another technical solution, such as Figure 1 , Figure 2 , Figure 3 As shown, in the well ring hoisting device, a first mounting hole 10 is provided in the middle of the bottom plate 2, and a first mounting rod 13 is provided at the bottom of the turntable 8. The first mounting rod 13 is rotatably inserted into the first mounting hole 10, and a limit member 16 is provided on the first mounting rod 13 located below the bottom plate 2.

[0048] In this technical solution, a circular first mounting hole 10 is formed at the center of the bottom plate 2 of the drum, and a first mounting rod 13 is vertically fixed to the bottom of the turntable 8. The first mounting rod 13 is inserted downward into the first mounting hole 10 of the bottom plate 2, allowing the turntable 8 to rotate freely on the bottom plate 2 with the first mounting rod 13 as the axis. A limiting member 16 is installed at the end of the first mounting rod 13 located below the bottom plate 2 to prevent the first mounting rod 13 from detaching upward from the first mounting hole 10. When the operator rotates the turntable 8, the first mounting rod 13 rotates synchronously within the first mounting hole 10, and the limiting member 16 is always located below the bottom plate 2 to prevent the first mounting rod 13 from moving upward, ensuring that the turntable 8 will not accidentally detach from the bottom plate 2 when rotating.

[0049] This technical solution achieves stable rotation of the turntable 8 through an insert-type rotating shaft structure, and the limiting component 16 provides reliable anti-fall protection, avoiding device failure caused by the turntable 8 loosening or falling off during hoisting, and significantly improving equipment durability and construction safety.

[0050] In another technical solution, such as Figure 1 , Figure 2 , Figure 3 As shown, in the well ring hoisting device, an annular support groove 9 is provided on the bottom plate 2 of the barrel. Multiple balls 14 are evenly rotatably arranged in the support groove 9. The first mounting hole 10 is located in the middle of the support groove 9. The turntable 8 is located on the top of the balls 14 in the support groove 9 and slides tangentially with the balls 14.

[0051] In this technical solution, the top surface of the barrel bottom plate 2 is machined with an annular groove, namely the support groove 9, which surrounds the first mounting hole 10. Multiple freely rolling balls 14 are evenly placed within the support groove 9. The bottom of the turntable 8 rests directly on top of the balls 14 within the support groove 9, allowing the turntable 8 to form a sliding contact with the barrel bottom plate 2 via the balls 14. The first mounting hole 10 is located in the central area of ​​the support groove 9. The turntable 8 is always supported by the balls 14 and moves smoothly along the rolling direction of the balls 14 during rotation. When the operator rotates the turntable 8, the bottom surface of the turntable 8 contacts the balls 14, and the balls 14 roll within the support groove 9, converting the sliding friction between the turntable 8 and the barrel bottom plate 2 into rolling friction, thus achieving effortless and smooth rotation of the turntable 8.

[0052] The ball bearing 14 structure of this technical solution significantly reduces the rotational resistance of the turntable 8, making the synchronous retraction and extension of the support rod 4 easier and less strenuous, especially suitable for long-term continuous construction; at the same time, it reduces the wear between the turntable 8 and the bottom plate 2 of the bucket, extending the service life of the device.

[0053] In another technical solution, such as Figure 3 As shown, in the well ring hoisting device, the limiting component is a first limiting rod 16, and a first limiting hole is provided on the first mounting rod 13, into which the first limiting rod 16 is inserted.

[0054] This technical solution specifies that the limiting component is the first limiting rod 16. In specific implementation, the first mounting rod 13 has a threaded hole (the first limiting hole), and the first limiting rod 16 is a matching threaded rod. During installation, the first limiting rod 16 is screwed into the threaded hole of the first mounting rod 13 from below the bottom plate 2 and tightened, so that the first limiting rod 16 passes horizontally through the first mounting rod 13. After the first limiting rod 16 is screwed in, its length is greater than the diameter of the first mounting hole 10, thus locking it below the bottom plate 2 and forming a mechanical obstruction. When the turntable 8 is lifted by external force, the first limiting rod 16 will abut against the lower surface of the bottom plate 2, preventing the first mounting rod 13 from dislodging from the first mounting hole 10.

[0055] The threaded connection method of this technical solution makes the limiting structure firm and reliable, resistant to vibration and loosening, and ensures that the turntable 8 will never detach during hoisting operations; moreover, the threaded rod is detachable, which facilitates the maintenance or replacement of the turntable 8 and extends the overall service life of the device.

[0056] In another technical solution, such as Figure 3 As shown, in the well ring hoisting device, a limiting cylinder 17 is sleeved on the first mounting rod 13, and the limiting cylinder 17 is located between the bottom plate 2 of the barrel and the first limiting rod 16.

[0057] In this technical solution, a cylindrical limiting cylinder 17 is fitted onto the first mounting rod 13. The limiting cylinder 17 is positioned between the lower surface of the barrel bottom plate 2 and the upper surface of the first limiting rod 16, filling the axial gap and widening the distance between the barrel bottom plate 2 and the first limiting rod 16. When installing the first limiting rod 16, the limiting cylinder 17 is pre-fitted into the first mounting rod 13 to press against the barrel bottom plate 2, providing operating space for tightening the first limiting rod 16. After installation, the limiting cylinder 17 eliminates gaps at the threaded connection. When the turntable 8 is lifted by external force, the pressure is evenly transmitted to the first limiting rod 16 through the limiting cylinder 17, preventing thread deformation.

[0058] This technical solution provides installation space to facilitate the installation and removal of the first limiting rod 16, improving maintenance efficiency; it eliminates gaps to enhance the reliability of preventing loosening, resists the vibration and impact of hoisting, and extends the life of the threads.

[0059] In another technical solution, such as Figure 1 , Figure 3 As shown, in the well ring hoisting device, a non-circular auxiliary rotating block 1 is provided at the top of the first mounting rod 13. This facilitates the operator's rotation of the first mounting rod 13.

[0060] In another technical solution, such as Figure 1 , Figure 3 As shown, in the well ring hoisting device, one end of the support rod 4 is provided with a vertical second mounting hole, and the connecting plate 7 is provided with a third mounting hole corresponding to the second mounting hole. A second mounting rod 12 is inserted into the second mounting hole and the third mounting hole. A support plate 15 is provided at the bottom end of the second mounting rod 12. A horizontal second limiting hole is provided on the second mounting rod 12 located on the connecting plate 7. A second limiting rod 11 is inserted into the second limiting hole.

[0061] This technical solution optimizes the hinge structure between the support rod 4 and the connecting plate 7. Specifically, a vertical second mounting hole is formed at the end of the support rod 4 near the connecting plate 7; a corresponding third mounting hole is formed on the connecting plate 7. During assembly, the second mounting rod 12 is inserted into the corresponding second and third mounting holes to achieve axial connection between the support rod 4 and the connecting plate 7. A horizontal support plate 15 is welded to the bottom of the second mounting rod 12. The size of the support plate 15 is larger than the diameter of the second mounting hole to support the weight of the support rod 4. The section of the second mounting rod 12 located above the connecting plate 7 is machined with a horizontal threaded hole (second limiting hole), and a matching second limiting rod 11 (threaded rod) is screwed in. After tightening, the second limiting rod 11 presses against the connecting plate 7, preventing the second mounting rod 12 from moving upwards and disengaging. When the support rod 4 is extended or retracted, the second mounting rod 12 rotates freely within the hole to achieve the hinge connection. The support plate 15 supports the support rod 4 to prevent the support rod 4 from detaching from the second mounting rod 12; after the second limiting rod 11 is tightened, it presses against the upper surface of the connecting plate 7 to form a two-way locking mechanism, ensuring that the second mounting rod 12 is axially fixed and does not detach.

[0062] This technical solution features a detachable threaded locking structure (second limiting rod 11) that facilitates maintenance and replacement of worn parts, extending the device's lifespan. The support plate 15 and the second limiting rod 11 ensure effective hinged connection between the second mounting rod 12 and the connecting plate 7 and support rod 4, preventing easy separation. Assembly is simple and requires no welding, reducing manufacturing costs.

[0063] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0064] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A well ring hoisting device, characterized in that, include: The hoisting bucket has at least two hoisting holes evenly arranged along its circumference on the side wall near its top and at least three support holes evenly arranged along its circumference on the side wall near its bottom. Support rods are movably inserted into the support holes. The bottom of the hoisting bucket is provided with a horizontal bucket bottom plate. The bucket bottom plate is provided with a horizontal first limiting plate corresponding to each support rod. The first limiting plate is fixedly connected to the bucket bottom plate by at least two vertical connecting rods. The support rod is movably disposed between its corresponding first limiting plate and the bucket bottom plate.

2. The well ring hoisting device as described in claim 1, characterized in that, A horizontal turntable is rotatably arranged in the middle of the bottom plate of the barrel. The edge of the turntable is evenly provided with connecting plates corresponding to each support rod along its circumference. The connecting plates are hinged to one end of the support rod.

3. The well ring hoisting device as described in claim 2, characterized in that, The bottom plate of the bucket is provided with a stop block corresponding to each connecting plate. When the connecting plate rotates with the turntable and abuts against its corresponding stop block, the support rod moves completely into the hoisting bucket.

4. The well ring hoisting device as described in claim 2, characterized in that, The bottom plate of the barrel has a first mounting hole in the middle, and the bottom of the turntable has a first mounting rod. The first mounting rod is rotatably inserted into the first mounting hole, and a limit member is provided on the first mounting rod located below the bottom plate of the barrel.

5. The well ring hoisting device as described in claim 4, characterized in that, The bottom plate of the barrel is provided with an annular support groove, and multiple balls are evenly rotated in the support groove. The first mounting hole is located in the middle of the support groove, and the turntable is located on top of the balls in the support groove and slides tangentially with the balls.

6. The well ring hoisting device as described in claim 4 or 5, characterized in that, The limiting component is a first limiting rod, and a first limiting hole is provided on the first mounting rod, into which the first limiting rod is inserted.

7. The well ring hoisting device as described in claim 6, characterized in that, A limiting cylinder is fitted onto the first mounting rod, and the limiting cylinder is located between the bottom plate of the barrel and the first limiting rod.

8. The well ring hoisting device as described in claim 4, characterized in that, A non-circular auxiliary rotating block is provided at the top of the first mounting rod.

9. The well ring hoisting device as described in claim 2, characterized in that, One end of the support rod is provided with a vertical second mounting hole, and the connecting plate is provided with a third mounting hole corresponding to the second mounting hole. A second mounting rod is inserted into the second mounting hole and the third mounting hole. A support plate is provided at the bottom end of the second mounting rod. A horizontal second limiting hole is provided on the second mounting rod located on the connecting plate, and a second limiting rod is inserted into the second limiting hole.

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