Auxiliary tool for lifting water impeller

Abstract

The utility model relates to the technical field of lifting appliances, in particular to an auxiliary tool for lifting a water impeller, which comprises a guide cylinder, a guide rod and at least two positioning arms, the at least two positioning arms are fixedly arranged on the side of the guide cylinder and are parallel to each other, and the guide rod is arranged on the guide cylinder. A sliding groove matched with a lifting guide rail of the water impeller is formed in the end of the positioning arm, the guide rod can penetrate into the guide cylinder, a hook is arranged at the bottom of the guide rod, the guide rod is further provided with a connecting hole used for being connected with a chain, and the connecting hole is located above the hook. The guide rod is limited through the guide cylinder, so that a user can conveniently operate the guide rod ashore to drive the chain to be connected with an underwater water impeller lifting ring, underwater operation is not needed, and the convenience and safety of lifting of the water impeller are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and more specifically, to an auxiliary tooling for lifting a propeller. Background Technology

[0002] In wastewater treatment at water purification plants, propellers are needed to move wastewater through multiple treatment tanks. Propellers are typically wall-mounted and fixed in the wastewater treatment tanks. The sides of the propeller are slidably connected to the inner wall of the tank via lifting rails mounted on the tank walls. The propeller usually has lifting rings; during lifting or lowering, a chain is connected to the lifting rings, and a crane winds up or releases the chain to move the propeller up or down along the lifting rails. However, because the propeller operates underwater for extended periods, and the wastewater contains a high amount of electrolytes, has a fast flow rate, and generates vibrations during operation, the corrosion rate of the chains underwater is greatly accelerated. When the propeller needs to be lifted for maintenance after prolonged use, the corroded chains often break. This requires specialized personnel to dive and reconnect the new chain to the propeller before lifting. This poses risks to underwater workers and significantly impacts the maintenance schedule. Therefore, there is an urgent need for a tool to assist workers in reconnecting broken propeller chains. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where underwater operations are required to reconnect the chain after it breaks, and to provide a lifting auxiliary tool for the propeller that can connect the chain to the propeller without underwater operations.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A lifting auxiliary fixture for a jet generator is provided, comprising a guide cylinder, a guide rod, and at least two positioning arms. The at least two positioning arms are fixedly installed beside the guide cylinder and are parallel to each other. The end of each positioning arm is provided with a sliding groove that matches the lifting guide rail of the jet generator. The guide rod can be inserted into the guide cylinder, and the bottom of the guide rod is provided with a hook. The guide rod is also provided with a connecting hole for connecting a chain, and the connecting hole is located above the hook.

[0006] With this setup, when the propeller needs to be reconnected to the chain during hoisting, the operator can connect the groove of the positioning arm to the lifting guide rail of the propeller, allowing the positioning arm to slide up and down along the lifting guide rail. After the positioning arm is connected to the lifting guide rail, the guide cylinder is located directly above the lifting ring of the propeller. If the positioning arm is a fixed-length structure, the operator can select an auxiliary tool with a positioning arm of appropriate length according to the propeller model. If the positioning arm is an adjustable-length structure, the operator can first determine the distance from the lifting guide rail to the lifting ring based on the propeller model and then adjust the length of the positioning arm to meet the above conditions. Next, the operator slides the positioning arm down along the lifting guide rail until the bottom of the guide cylinder abuts against the propeller. Subsequently, the operator connects the chain to the connecting hole on the guide rod and extends the guide rod down along the hollow guide cylinder until the guide rod abuts against the propeller. Then, the hook of the guide rod is hooked onto the lifting ring of the propeller, and the propeller is lifted by pulling the chain on the connecting hole and the guide rod. This auxiliary tooling uses the positioning arm and lifting guide rail to position the guide cylinder above the lifting ring. Then, a guide rod with a chain is inserted into the guide cylinder and connected to the lifting ring. The guide cylinder restricts the movement range of the guide rod, which helps workers quickly locate the lifting ring. Workers can connect the guide rod to the lifting ring without going into the water, and then lift the propeller by the chain. Compared with the traditional method, this solution does not require diving, improves the safety of workers, reduces the complexity of the lifting process, and improves the lifting efficiency of the propeller.

[0007] Preferably, the guide tube includes several connecting sections, which are detachably connected to each other, and the sidewalls of the connecting sections are provided with through grooves, and the several positioning arms are respectively installed on the connecting sections one by one.

[0008] With this setup, users can connect the connecting sections according to the sinking depth of the propeller to ensure that the bottom of the guide cylinder can abut against the propeller, achieving a good limiting effect. On the other hand, when lifting the propeller, the guide cylinder can be disassembled into connecting sections one by one, and the guide rod can be passed through the through groove to remove the connecting sections. This avoids the top of the guide cylinder being too high when the propeller rises, making it inconvenient to operate, affecting the crane, or even hitting the factory ceiling, thereby improving the practicality of this solution.

[0009] Preferably, the positioning arm includes a fixed section, an adjusting section, and a locking member. The fixed section is fixedly installed on the guide cylinder, and a sliding groove is provided in the fixed section. The adjusting section is slidably connected to the sliding groove. The locking member is installed on the fixed section and is used to restrict the sliding of the adjusting section. The sliding groove is located at the end of the adjusting section.

[0010] The chute is located at the end of the adjusting section, away from the fixed section. This design allows the user to calculate the distance between the lifting ring on the propeller and the lifting guide rail based on the propeller length when using different propeller models, thereby adjusting the length of the positioning arm and increasing the applicability of this auxiliary tooling. When adjusting the length of the positioning arm, the user can first release the locking device from the adjusting section, and then adjust the length of the adjusting section inserted into the fixed section to adjust the total length of the positioning arm, thus adapting to different propeller models. After adjusting the length, the user can then lock the adjusting section with the locking device without affecting subsequent lifting and positioning operations.

[0011] Preferably, the locking component includes a locking bolt, a locking plate, and a locking nut. The fixed section is provided with a clearance groove for installing the locking bolt and the locking plate. The locking bolt is fixedly installed on the fixed section and is located beside the adjusting section. The locking bolt is movably inserted through the locking plate, and the locking plate is parallel to one side of the adjusting section. The locking nut is threadedly connected to the locking bolt and is located on the side of the locking plate away from the adjusting section.

[0012] With this configuration, when the length of the positioning arm needs to be adjusted, the user can loosen the locking nut, allowing the locking plate on the locking bolt to move away from the adjustment section. After losing the clamping effect of the locking plate, the adjustment section can slide relative to the fixed section. When the adjustment is completed and the adjustment section needs to be fixed, the locking bolt is tightened, causing the locking plate to press tightly against the adjustment section, thus limiting the adjustment section.

[0013] Preferably, the clearance groove has a concave structure, and there are two locking bolts. The two locking bolts are symmetrically arranged on both sides of the adjustment section, and both locking bolts pass through the locking plate.

[0014] This arrangement ensures that both sides of the adjustment section are subjected to symmetrical pressure, resulting in a balanced locking force on both sides and improving the locking effect of the locking component on the adjustment section.

[0015] Preferably, the locking plate and the adjusting section are provided with anti-slip structures on opposite sides to increase friction.

[0016] This design helps to increase the friction between the locking plate and the adjusting section. The friction structure includes, but is not limited to, grooves, protrusions, anti-slip pads, and other structural features.

[0017] Preferably, the guide rod includes a traction section and several extension sections, the hook and the connecting hole are both located at the bottom of the traction section, the bottom of the extension section is threadedly connected to the top of the traction section, and any two extension sections are detachably connected end to end.

[0018] With this setup, the length of the guide rod can be adjusted according to the lowering depth of the propeller, and when the propeller is lifted, the guide rod can also be removed section by section to avoid the excessive length of the guide rod causing operational interference after lifting.

[0019] Preferably, the connecting hole is a circular ring structure.

[0020] This design helps reduce wear between the chain and the connecting hole during hoisting.

[0021] Preferably, it also includes a vision ring for observing underwater operations, the vision ring being detachably connected to the bottom of the guide tube.

[0022] With this setup, when the user needs to connect the guide rod to the lifting ring of the jet generator, the user can also observe the environment near the lifting ring of the jet generator through the visual ring, thereby improving the accuracy of the connection between the guide rod and the lifting ring, and making it easier for the user to operate the hook of the guide rod to hook the lifting ring.

[0023] Preferably, the vision ring includes a housing and a transmission cable, and also includes a power supply, a camera, and a lighting lamp, all installed inside the housing. The camera and the lighting lamp are electrically connected to the power supply, and the transmission cable is used to connect the camera to the host computer for signal transmission.

[0024] With this setup, the user first installs the visual ring at the bottom of the guide tube and lowers the guide tube as normal. When the visual ring is positioned on the propeller, the lighting provides illumination to the inside of the visual ring, and the camera captures the view inside the visual ring, i.e., the state of the lifting ring on the propeller. The image captured by the camera is transmitted in real time to the host computer via a transmission cable, allowing the user to accurately determine the positional relationship between the guide rod and the lifting ring on the water via a monitoring screen when lowering the guide rod to connect the lifting ring. This makes it easier for the user to accurately hook the hook onto the lifting ring.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] (1) The guide rod is limited by the guide tube, which makes it easy for the user to operate the guide rod on the shore to drive the chain to connect with the underwater propeller lifting ring without underwater operation, which greatly improves the convenience and safety of propeller lifting.

[0027] (2) The adjustable length positioning arm allows the auxiliary tooling of this solution to be adapted to various types of flow generators, thus expanding the scope of application of this solution.

[0028] (3) The visual ring setting further improves the accuracy of the user's operation of the guide rod to connect the lifting ring and improves the convenience of operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an auxiliary tooling for lifting a jet generator according to this utility model;

[0030] Figure 2 This is a schematic diagram of the positioning arm structure of a thruster lifting auxiliary tooling according to the present invention;

[0031] Figure 3 This is a schematic diagram of the working process of an auxiliary tooling for lifting a jet generator according to this utility model;

[0032] Figure 4 This is a schematic diagram of the visual ring structure of a thruster lifting auxiliary tooling according to the present invention.

[0033] The markings in the diagram are explained below:

[0034] 1. Guide tube; 11. Connecting section; 12. Through groove; 2. Guide rod; 21. Hook; 22. Connecting hole; 23. Traction section; 24. Extension section; 3. Positioning arm; 31. Slide groove; 32. Fixing section; 321. Sliding groove; 322. Clearance groove; 33. Adjustment section; 34. Locking component; 341. Locking bolt; 342. Locking plate; 343. Locking nut; 4. Vision ring; 5. Flow actuator; 51. Lifting ring; 6. Lifting guide rail. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0036] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] Example 1

[0038] like Figure 1 The first embodiment of the auxiliary tooling for lifting a jet propeller according to the present invention is shown. It includes a guide cylinder 1, a guide rod 2 and at least two positioning arms 3. The at least two positioning arms 3 are fixedly installed on the side of the guide cylinder 1 and are parallel to each other. The end of the positioning arm 3 is provided with a sliding groove 31 that matches the lifting guide rail 6 of the jet propeller 5. The guide rod 2 can be inserted into the guide cylinder 1 and the bottom of the guide rod 2 is provided with a hook 21. The guide rod 2 is also provided with a connecting hole 22 for connecting a chain. The connecting hole 22 is located above the hook 21.

[0039] With this setup, when the chain needs to be reconnected to the propeller 5 during hoisting, the operator can connect the sliding groove 31 of the positioning arm 3 to the lifting guide rail 6 of the propeller 5, allowing the positioning arm 3 to slide up and down along the lifting guide rail 6. After the positioning arm 3 is connected to the lifting guide rail 6, the guide cylinder 1 is positioned directly above the lifting ring 51 of the propeller 5. If the positioning arm 3 is a fixed-length structure, the operator can select an auxiliary tool with a suitable length positioning arm 3 according to the model of the propeller 5. If the positioning arm 3 is an adjustable-length structure, the operator can first determine the appropriate length based on the model of the propeller 5. The distance between the lifting guide rail 6 and the lifting ring 51 is adjusted to change the length of the positioning arm 3 to meet the above conditions. Then, the operator slides the positioning arm 3 down along the lifting guide rail 6 until the bottom of the guide cylinder 1 contacts the pusher 5. Subsequently, the operator connects the chain to the connecting hole 22 on the guide rod 2 and lowers the guide rod 2 along the hollow guide cylinder 1 until the guide rod 2 contacts the pusher 5. Then, the hook 21 of the guide rod 2 is hooked onto the lifting ring 51 of the pusher 5. By pulling the chain on the connecting hole 22, the pusher 5 is driven to rise through the guide rod 2. This auxiliary tooling uses the positioning arm 3 and the lifting guide rail 6 to position the guide cylinder 1 above the lifting ring 51. Then, the guide rod 2 with a chain is inserted into the guide cylinder 1 and connected to the lifting ring 51. The guide cylinder 1 restricts the movement range of the guide rod 2, which helps the workers to quickly find the lifting ring 51. This allows the workers to connect the guide rod 2 to the lifting ring 51 without going into the water, and then lift the propeller 5 by the chain. Compared with the traditional method, this solution does not require diving, which improves the safety of the workers, reduces the complexity of the lifting process, and improves the lifting efficiency of the propeller 5.

[0040] As one embodiment of the present invention, the guide tube 1 includes several connecting sections 11, which are detachably connected to each other, and the side wall of the connecting section 11 is provided with a through groove 12, and several positioning arms 3 are respectively installed on the connecting section 11.

[0041] With this setup, users can connect the connecting section 11 according to the sinking depth of the thruster 5 to ensure that the bottom of the guide cylinder 1 can abut against the thruster 5, achieving a good limiting effect. On the other hand, when lifting the thruster 5, the guide cylinder 1 can be disassembled into connecting sections 11 one by one, and the guide rod 2 can be passed through the through groove 12 to remove the connecting section 11. This can prevent the top of the guide cylinder 1 from being too high when the thruster 5 rises, making it inconvenient to operate, affecting the crane, or even hitting the factory ceiling, thereby improving the practicality of this solution.

[0042] The slide 31 is located at the end of the adjusting section 33, away from the fixed section 32. With this arrangement, when used with different models of propellers 5, the user can calculate the distance between the lifting ring 51 on the propeller 5 and the lifting guide rail 6 based on the length of the propeller 5, thereby adjusting the length of the positioning arm 3 and improving the applicability of this auxiliary tooling. When it is necessary to adjust the length of the positioning arm 3, the user can first release the locking member 34 from the limiting position of the adjusting section 33, and then adjust the length of the adjusting section 33 inserted into the fixed section 32 to adjust the total length of the positioning arm 3, thus adapting it to different models of propellers 5. After the length adjustment is completed, the user can then lock the adjusting section 33 with the locking member 34 without affecting subsequent lifting and positioning operations.

[0043] As one embodiment of the present invention, the guide rod 2 includes a traction section 23 and several extension sections 24. The hook 21 and the connecting hole 22 are both located at the bottom of the traction section 23. The bottom of the extension section 24 is threadedly connected to the top of the traction section 23. Any two extension sections 24 can be detachably connected end to end.

[0044] With this setup, the length of the guide rod 2 can be adjusted according to the lowering depth of the propeller 5. When the propeller 5 is lifted, the guide rod 2 can also be removed section by section to avoid the excessive length of the guide rod 2 causing operational interference after lifting.

[0045] In one embodiment of this utility model, the connecting hole 22 is a circular ring structure.

[0046] This design helps reduce wear between the chain and the connecting hole 22 during hoisting.

[0047] Example 2

[0048] like Figures 1 to 3 The following is a second embodiment of the auxiliary tooling for lifting a propeller according to the present invention. This embodiment is similar to the first embodiment, except that the positioning arm 3 is set differently.

[0049] As one embodiment of this utility model, the positioning arm 3 includes a fixed section 32, an adjusting section 33, and a locking member 34. The fixed section 32 is fixedly installed on the guide cylinder 1. The fixed section 32 is provided with a sliding groove 321. The adjusting section 33 is slidably connected to the sliding groove 321. The locking member 34 is installed on the fixed section 32 and is used to restrict the sliding of the adjusting section 33. The sliding groove 31 is located at the end of the adjusting section 33.

[0050] As one embodiment of this utility model, the locking member 34 includes a locking bolt 341, a locking plate 342, and a locking nut 343. The fixed section 32 is provided with a clearance groove 322 for installing the locking bolt 341 and the locking plate 342. The locking bolt 341 is fixedly installed on the fixed section 32 and is located beside the adjusting section 33. The locking bolt 341 is movably inserted through the locking plate 342 and the locking plate 342 is parallel to one side of the adjusting section 33. The locking nut 343 is threadedly connected to the locking bolt 341 and is located on the side of the locking plate 342 away from the adjusting section 33.

[0051] With this setup, when the length of the positioning arm 3 needs to be adjusted, the user can loosen the locking nut 343, allowing the locking plate 342 on the locking bolt 341 to move away from the adjusting section 33. After losing the clamping effect of the locking plate 342, the adjusting section 33 can slide relative to the fixed section 32. When the adjustment is completed and the adjusting section 33 needs to be fixed, tighten the locking bolt 341, so that the locking plate 342 is tightly pressed against the adjusting section 33, thus creating a limiting effect on the adjusting section 33.

[0052] As one embodiment of this utility model, the clearance groove 322 has a concave structure, and there are two locking bolts 341. The two locking bolts 341 are symmetrically arranged on both sides of the adjustment section 33, and both locking bolts 341 pass through the locking piece 342.

[0053] This arrangement allows for symmetrical pressure on both sides of the adjusting section 33, resulting in a balanced locking force on both sides and improving the locking effect of the locking member 34 on the adjusting section 33.

[0054] As one embodiment of this utility model, anti-slip structures for increasing friction are provided on the opposite sides of the locking piece 342 and the adjusting section 33.

[0055] This configuration helps to increase the friction between the locking plate 342 and the adjusting section 33. The friction structure includes, but is not limited to, the presence of grooves, protrusions, anti-slip pads, and other structural features.

[0056] Example 3

[0057] like Figure 4 The image shows a third embodiment of the auxiliary tooling for lifting a propeller according to the present invention. This embodiment is similar to embodiment 1, except that it also includes a visual ring 4.

[0058] As one embodiment of this utility model, it also includes a visual ring 4 for observing underwater operations, and the visual ring 4 is detachably connected to the bottom of the guide cylinder 1 through a threaded structure.

[0059] With this setup, when the user needs to connect the guide rod 2 to the lifting ring 51 of the jet generator 5, the user can also observe the environment near the lifting ring 51 of the jet generator 5 through the visual ring 4, thereby improving the accuracy of the connection between the guide rod 2 and the lifting ring 51, and making it easier for the user to operate the hook 21 of the guide rod 2 to hook the lifting ring 51.

[0060] As one embodiment of this utility model, the visual ring 4 includes a housing and a transmission cable, as well as a power supply, a camera and a lighting lamp, all installed inside the housing. The camera and the lighting lamp are electrically connected to the power supply, and the transmission cable is used to connect the signal between the camera and the host computer.

[0061] With this setup, the user first installs the visual ring 4 at the bottom of the guide tube 1 and lowers the guide tube 1 as normal. When the visual ring 4 is positioned on the propeller 5, the lighting provides illumination to the inside of the visual ring 4. The camera captures the view inside the visual ring 4, which is the state of the lifting ring 51 on the propeller 5. The image captured by the camera is transmitted to the host computer in real time via a transmission cable. This allows the user to accurately determine the positional relationship between the guide rod 2 and the lifting ring 51 on the water via a monitoring screen when the guide rod 2 is lowered and connected. This makes it easier for the user to accurately hook the hook 21 onto the lifting ring 51.

[0062] As one embodiment of this utility model, the camera uses a Sony IMX585 Starvis 2 image sensor and is equipped with a Fujian FM-1614H wide-angle fisheye lens. The image sensor transmits the underwater image to the monitoring screen in real time via a transmission cable.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pusher hoisting auxiliary tool, characterized in that, The utility model provides a kind of guiding cylinder (1), guiding rod (2) and at least two positioning arms (3), at least two described positioning arms (3) are fixedly arranged in the side of guiding cylinder (1), and the positioning arm (3) is parallel to each other, the end of positioning arm (3) is equipped with the sliding slot (31) matched with the lifting guide rail of pusher, guiding rod (2) can be inserted into guiding cylinder (1), and the bottom of guiding rod (2) is equipped with hook (21), guiding rod (2) is also equipped with connecting hole (22) for connecting chain, connecting hole (22) is located above hook (21).

2. The push flow device hoisting auxiliary tooling of claim 1, wherein, The guiding cylinder (1) includes a plurality of connecting segments (11), each two of the connecting segments (11) are detachably connected, and the sidewall of the connecting segment (11) is provided with a through groove (12), and a plurality of the positioning arms (3) are respectively and correspondingly arranged on the connecting segments (11).

3. The push flow device hoisting auxiliary tooling of claim 1, wherein, The positioning arm (3) includes a fixed segment (32), an adjusting segment (33) and a locking member (34), the fixed segment (32) is fixedly arranged on the guiding cylinder (1), the fixed segment (32) is provided with a sliding groove (321) therein, the adjusting segment (33) is slidably connected with the sliding groove (321), the locking member (34) is arranged on the fixed segment (32), and the locking member (34) is used for limiting the sliding of the adjusting segment (33), and the sliding slot (31) is located at the end of the adjusting segment (33).

4. The push flow device hoisting auxiliary tooling of claim 3, wherein, The locking member (34) includes a locking bolt (341), a locking piece (342) and a locking nut (343), the fixed segment (32) is provided with an empty slot (322) for mounting the locking bolt (341) and the locking piece (342), the locking bolt (341) is fixedly arranged on the fixed segment (32), and the locking bolt (341) is located beside the adjusting segment (33), the locking bolt (341) is movably arranged in the locking piece (342), and the locking piece (342) is parallel to one side of the adjusting segment (33), and the locking nut (343) is threadedly connected with the locking bolt (341) and located on the side of the locking piece (342) away from the adjusting segment (33).

5. The pusher hoisting assisting tool according to claim 4, characterized in that, The empty slot (322) is a concave structure, the number of the locking bolt (341) is two, and the two locking bolts (341) are symmetrically arranged on both sides of the adjusting segment (33), and the two locking bolts (341) are arranged in the locking piece (342).

6. The push flow device hoisting auxiliary tooling of claim 4, wherein, The locking piece (342) and the opposite side of the adjusting segment (33) are both provided with anti-skid structures for increasing friction.

7. The pusher hoisting assisting tool according to claim 1, characterized in that, The guiding rod (2) includes a traction segment (23) and a plurality of extension segments (24), the hook (21) and the connecting hole (22) are located at the bottom of the traction segment (23), the bottom of the extension segment (24) is threadedly connected with the top of the traction segment (23), and any two extension segments (24) are detachably connected in sequence.

8. The pusher hoisting assisting tool according to claim 1, characterized in that, The connecting hole (22) is a circular ring structure.

9. The pusher hoisting assisting tool according to any one of claims 1 to 8, characterized in that, Also included is a visual ring (4) for observing underwater operations, which is detachably connected to the bottom of the guide cylinder (1).

10. The push flow device hoisting aid of claim 9, wherein, The visual ring (4) comprises a shell and a transmission cable, and further comprises a power supply, a camera and a light, which are all arranged in the shell and electrically connected to the power supply; the transmission cable is used for signal communication between the camera and a host computer.

Images