Automatic hoisting device for polytetrafluoroethylene anti-corrosion spraying production line

Abstract

The invention discloses an automatic hoisting device for a polytetrafluoroethylene anti-corrosion spraying production line, and belongs to the field of hoisting. An automatic hoisting device for a polytetrafluoroethylene anti-corrosion spraying production line comprises a connecting cylinder and a rotating rod rotating on the inner wall of the connecting cylinder through a bearing, and further comprises a driving part arranged on the inner wall of the connecting cylinder and used for driving the rotating rod to rotate; the fixing disc rotates on the inner wall of the connecting cylinder through a bearing, the bottom of the fixing disc is fixedly connected with a rotating frame, an inner tooth groove is formed in the top of the fixing disc, and the end of the rotating rod penetrates through the fixing disc, the rotating frame and the inner wall of the inner tooth groove; the rotating rod is locked in time, the clamping mechanism and an object are driven to rotate integrally, the factors such as shaking and sliding of the object caused by accidental rotation of the clamping mechanism can be effectively avoided, the risk of injury possibly caused to surrounding personnel in the operation process is reduced, and higher safety guarantee is provided for an operation site.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to an automatic hoisting device for a polyfluoroethylene anti-corrosion spraying production line. Background Art

[0002] PTFE anti-corrosion spraying is an anti-corrosion protection technology, which is mainly used to coat a layer of polytetrafluoroethylene (PTFE) or other fluorine-containing polymer materials on the outer surface of an object to provide excellent anti-corrosion, wear resistance, high temperature resistance and other properties. PTFE anti-corrosion spraying is widely used in the anti-corrosion protection of pipelines, storage tanks, reactors and other equipment in the petroleum, chemical, electric power, pharmaceutical, food and other industries. Since the weight of objects is often heavy, it is necessary to use a lifting device to lift the objects for spraying PTFE anti-corrosion.

[0003] At present, when objects are lifted, the lifting device clamps both sides of the object and then directly lifts the lifted object. Since different surfaces of the object need to be sprayed during spraying, the object needs to be frequently rotated in different directions. Since the object is frequently changed in direction after clamping, it is easy to rotate and cause the object to shake, slip, etc., which reduces the risk of injury to surrounding personnel during the operation and provides higher safety protection for the work site. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems in the prior art and to propose an automatic hoisting device for a polyfluoro anti-corrosion spraying production line.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The cam is an angular contact surface that is fixed on the top of the cam, and the cam is provided with a toothed structure that is configured to contact the top of the cam, and the cam is connected with the toothed structure to form a circle around the cam, so that the cam can be rotated freely.

[0006] Preferably, the locking mechanism includes a sliding sleeve sliding on the surface of the rotating rod, the upper and lower ends of the sliding sleeve are respectively fixedly connected with a limiting gear ring and an engaging gear ring, the limiting gear ring is adapted to the internal dimensions of the internal tooth groove, the surface of the sliding sleeve is threadedly connected with a connecting bolt, the surface of the rotating rod is provided with a sliding groove, and the connecting bolt slides inside the sliding groove.

[0007] Preferably, the driving part includes a servo motor arranged on the top wall of the connecting cylinder, the output end of the servo motor is fixedly connected to a driving shaft, the end of the driving shaft is fixedly connected to a main gear, and the main gear is used to drive the meshing gear ring to rotate.

[0008] Preferably, the clamping mechanism includes an L-support frame fixed to the bottom of the rotating frame, the interior of the L-support frame is rotatably connected to a worm wheel through a bearing, the surface of the worm wheel is meshingly connected to a worm, the worm is fixedly connected to the surface of the rotating rod, the two sides of the worm wheel are fixedly connected to a clamping rod, and the top surface of the clamping rod slides on the surface of the fixed pin of the rotating frame.

[0009] Preferably, the adsorption mechanism includes a piston rod 1 sliding inside the rotating rod, the end of the piston rod 1 is connected to an adsorption plate, the top of the adsorption plate is connected to the inner bottom wall of the rotating rod through a pipe, the inner top wall of the rotating rod is slidably connected to a piston rod 2, the top of the piston rod 2 is connected to an ejection plate through a bearing, and the ejection plate is fixed directly above the servo motor.

[0010] Preferably, a through hole and an air leakage hole are respectively opened on the surface of the rotating rod, the through hole is located directly above the air leakage hole, and the air leakage hole is connected to the internal thread of the connecting bolt.

[0011] Preferably, a guide groove is provided inside the connecting tube, the ejection plate slides inside the guide groove, and a second return spring is fixedly connected between the ejection plate and the guide groove.

[0012] Preferably, a return spring 1 is sleeved on the surface of the piston rod 1, and the end of the return spring 1 is fixedly connected to the inner bottom wall of the rotating rod.

[0013] Preferably, a compression spring is fixedly connected to the inner bottom wall of the connecting cylinder, and an end of the compression spring is in contact with the upper surface of the meshing gear ring.

[0014] Preferably, a handle is fixedly connected to one side of the sliding sleeve, and the handle is located inside the connecting tube.

[0015] Compared with the prior art, the present invention provides an automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line, which has the following beneficial effects: 1. The automatic lifting device of the PTFE anti-corrosion spraying production line can lock the rotating rod in rotation after the object is automatically clamped through the cooperation between the sliding sleeve, the limit gear ring, the connecting bolt and the sliding groove. Through this setting, the rotating rod can be locked in time and the clamping mechanism and the object can be driven to rotate as a whole, which can effectively avoid factors such as object shaking and slipping caused by accidental rotation of the clamping mechanism, reduce the risk of injury to surrounding personnel during the operation, and provide higher safety protection for the operation site.

[0016] 2. The automatic lifting device of the PTFE anti-corrosion spraying production line can fix both sides of the hoisted object through the cooperation between the L support frame, worm gear, worm and clamping rod. Through this setting, it can be clamped according to different object sizes, avoiding the problem of loose clamping due to differences in object sizes, and further improving the safety of object lifting.

[0017] 3. The automatic lifting device of the PTFE anti-corrosion spraying production line, through the cooperation between the piston rod 1, the adsorption plate, the piston rod 2 and the ejection plate, enables the object to be adsorbed in advance before being lifted. Through this setting, the clamping effect can be provided again, preventing the problem of slipping easily caused by single clamping, and further improving the stability of object lifting. The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can timely lock the rotating rod and drive the clamping mechanism and the object to rotate as a whole, which can effectively avoid factors such as object shaking and slipping caused by accidental rotation of the clamping mechanism, reduce the risk of injury to surrounding personnel during the operation, and provide higher safety protection for the work site. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line proposed by the present invention; Figure 2 The invention proposes an automatic lifting device for a polyfluoro anti-corrosion spraying production line. Figure 1 The enlarged structural diagram at A in the middle; Figure 3 This is a schematic diagram of the locking mechanism structure of an automatic hoisting device for a polytetrafluoroethylene anti-corrosion spraying production line proposed by the present invention; Figure 4 This is a right side structural schematic diagram of an automatic hoisting device for a polyfluoro anti-corrosion spraying production line proposed by the present invention; Figure 5 This is a schematic diagram of the cutaway structure of an automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line proposed by the present invention; Figure 6Schematic diagram of the adsorption mechanism structure of the automatic lifting device of the PTFE anti-corrosion spraying production line proposed by the present invention Figure 1 ; Figure 7 Schematic diagram of the adsorption mechanism structure of the automatic lifting device of the PTFE anti-corrosion spraying production line proposed by the present invention Figure 2 ; Figure 8 The invention proposes an automatic lifting device for a polyfluoro anti-corrosion spraying production line. Figure 5 Enlarged structural diagram at B in the middle.

[0019] In the figure: 1. connecting cylinder; 11. fixed plate; 12. rotating frame; 13. internal tooth groove; 2. rotating rod; 3. clamping mechanism; 31. L support frame; 32. worm gear; 33. worm; 34. clamping rod; 4. adsorption mechanism; 41. piston rod one; 411. reset spring one; 42. adsorption plate; 43. piston rod two; 431. through hole; 432. vent hole; 44. ejector plate; 45. guide groove; 46. reset spring two; 5. locking mechanism; 51. sliding sleeve; 52. limit gear ring; 53. connecting bolt; 54. sliding groove; 55. meshing gear ring; 56. extrusion spring; 57. handle; 61. servo motor; 62. drive shaft; 63. main gear. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In one embodiment, reference Figure 1-Figure 8, an automatic hoisting device for a polytetrafluoroethylene anticorrosive spraying production line, comprising a connecting tube 1, and a rotating rod 2 rotating on the inner wall of the connecting tube 1 through a bearing, and further comprising: a driving part arranged on the inner wall of the connecting tube 1, the driving part is used to drive the rotating rod 2 to rotate; a fixed disk 11 rotating on the inner wall of the connecting tube 1 through a bearing, a rotating frame 12 is fixedly connected to the bottom of the fixed disk 11, an inner tooth groove 13 is opened on the top of the fixed disk 11, and the ends of the rotating rod 2 respectively penetrate the fixed disk 11, the rotating frame 12 and the inner wall of the inner tooth groove 13; A clamping mechanism 3 is arranged at the bottom of the rotating frame 12, and the rotating rod 2 is used to drive the clamping mechanism 3 to automatically grasp or release; an adsorption mechanism 4 slides inside the rotating rod 2, and the adsorption mechanism 4 is used to fix the top of the object; a locking mechanism 5 is arranged on the surface of the rotating rod 2, and the locking mechanism 5 is adapted to the size of the inner tooth groove 13; when the locking mechanism 5 is located above the inner tooth groove 13, it is used to freely rotate the rotating rod 2, and when the locking mechanism 5 is located on the inner wall of the inner tooth groove 13, it is used to rotationally lock the rotating rod 2.

[0023] By adopting such a scheme, the rotation of the rotating rod 2 inside the connecting tube 1 can drive the clamping mechanism 3 to work. When the clamping mechanism 3 is working, the surface of the object to be sprayed can be clamped. At the same time, the adsorption mechanism 4 can be driven to work for secondary adsorption and fixation. When the adsorption mechanism 4 is working, the driving part can be driven to move upward, and the driving part engages upward on the surface of the locking mechanism 5. The driving part drives the locking mechanism 5 and the rotating rod 2 to rotate. When the object is fixed, the locking mechanism 5 is moved downward to insert the locking mechanism 5 into the internal tooth groove 13 to complete the single locking work of the rotating rod 2. Therefore, when the driving part is driven again, the ejection plate 44, the rotating frame 12 and the rotating rod 2 as well as the clamping mechanism 3 and the adsorption mechanism 4 need to be rotated synchronously as a whole, so as to drive the object to perform rotational spraying in different orientations.

[0024] During specific operation, the connecting tube 1 is first connected to the lifting equipment, and then the connecting tube 1 is used to limit the rotating rod 2. When the object is hoisted, the rotating rod 2 is driven to rotate by the driving part. When the rotating rod 2 rotates, the clamping mechanism 3 can be driven to drive. Under the drive of the clamping mechanism 3, the object can be automatically clamped or released according to the size of both sides of the object. When the object is under the rotating rod 2, the adsorption mechanism 4 can be adsorbed on the top of the object in advance, so as to pre-tighten the object. At the same time, the adsorption mechanism 4 drives the driving part to rotate. The driving part moves upward, thereby meshing the driving part with the surface of the locking mechanism 5. When the locking mechanism 5 is located on the inner tooth groove 13, the locking mechanism 5 and the driving part mesh with each other, so that the driving part drives the locking mechanism 5 and the rotating rod 2 to rotate. When the locking mechanism 5 is located inside the inner tooth groove 13, the locking mechanism 5 will be stuck in the inner tooth groove 13, thereby locking the rotating rod 2. The rotating rod 2 cannot rotate due to being locked, so as not to accidentally trigger the clamping mechanism 3 to rotate, thereby ensuring the clamping force between the clamping mechanism 3 and the object.

[0025] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The locking mechanism 5 includes a sliding sleeve 51 sliding on the surface of the rotating rod 2, and the upper and lower ends of the sliding sleeve 51 are respectively fixedly connected with a limit gear ring 52 and an engaging gear ring 55, and the limit gear ring 52 is adapted to the internal size of the internal tooth groove 13. The surface of the sliding sleeve 51 is threadedly connected with a connecting bolt 53, and the surface of the rotating rod 2 is provided with a sliding groove 54, and the connecting bolt 53 slides inside the sliding groove 54. The driving part includes a servo motor 61 arranged on the inner top wall of the connecting cylinder 1, and the output end of the servo motor 61 is fixedly connected with a driving shaft 62, and the end of the driving shaft 62 is fixedly connected with a main gear 63, and the main gear 63 is used to drive the engaging gear ring 55 to rotate.

[0026] By adopting such a scheme, the limiting gear ring 52 at the end of the sliding sleeve 51 is inserted into the inner tooth groove 13, so that the rotating rod 2 can be locked in time and the clamping mechanism 3 and the object can be driven to rotate as a whole, which can effectively avoid factors such as shaking and slipping of the object caused by accidental rotation of the clamping mechanism 3, reduce the risk of injury to surrounding personnel during operation, and provide higher safety protection for the work site.

[0027] During specific operation, the sliding sleeve 51 included in the locking mechanism 5 slides on the surface of the rotating rod 2. When the limiting gear ring 52 at the end of the sliding sleeve 51 is located above the inner tooth groove 13, the connecting bolt 53 is inserted just above the sliding groove 54. At this time, the limiting gear ring 52 is located just above the inner tooth groove 13. At this time, the locking of the rotating rod 2 will be released, and the driving part moves upward. When the servo motor 61 is pushed upward by the clamping mechanism 3, the servo motor 61 will drive the drive shaft 62 and the main gear 63 to move a certain height in turn, so that the main gear 63 will mesh with the surface of the meshing gear ring 55 at the highest point, thereby driving the meshing gear ring 55 at the top of the sliding sleeve 51 to rotate, and synchronously driving the rotating rod 2 to rotate through the meshing gear ring 55. When the limiting gear ring 52 is located When the inner tooth groove 13 is inside, the connecting bolt 53 will be stuck in the bottom of the sliding groove 54, thereby locking the rotating rod 2 and the fixed disk 11, so that the rotating rod 2, the fixed disk 11, the rotating frame 12, the clamping mechanism 3 and the adsorption mechanism 4 form a whole. When the driving part is reset, the servo motor 61 will drive the driving shaft 62 and the main gear 63 to restore to the original position again. At this time, the main gear 63 will mesh with the lowest meshing gear ring 55. The driving shaft 62 is driven by the servo motor 61 to rotate, and the driving shaft 62 drives the main gear 63 to rotate. Since the main gear 63 is meshed with the surface of the meshing gear ring 55 at the lowest point, it will drive the whole to work at the same time, so that the different surfaces of the clamped object can be frequently changed for spraying.

[0028] In addition, the limiting gear ring 52 and the connecting bolt 53 have the same number of teeth. Therefore, after the meshing gear ring 55 drives the limiting gear ring 52 to rotate different gear rings, it can also ensure that the connecting bolt 53 can be accurately inserted into the inner tooth groove 13 for locking work.

[0029] In one embodiment, reference Figure 1 and Figure 3 The clamping mechanism 3 includes an L-support frame 31 fixed to the bottom of the rotating frame 12, and a worm wheel 32 is rotatably connected to the interior of the L-support frame 31 through a bearing. A worm 33 is meshedly connected to the surface of the worm wheel 32. The worm 33 is fixedly connected to the surface of the rotating rod 2. The two sides of the worm wheel 32 are fixedly connected to the clamping rod 34, and the top surface of the clamping rod 34 slides on the surface of the fixed pin of the rotating frame 12.

[0030] By adopting this solution, the worm 33 drives the worm wheel 32 to rotate, and the worm wheel 32 drives the clamping rod 34, so that objects of different sizes can be clamped, the problem of loose clamping due to differences in object sizes is avoided, and the safety of object lifting is further improved.

[0031] During specific operation, the L support frame 31 is fixed to the bottom of the rotating frame 12, and then the L support frame 31 is used to support the worm wheel 32. When the rotating rod 2 rotates, the worm 33 is synchronously driven to rotate. The rotation of the worm 33 drives the worm wheel 32 engaged on the surface to rotate. The rotation of the worm wheel 32 drives the clamping rod 34 to move closer to or away from each other. When the two groups of clamping rods 34 are close to each other, the two sides of the surface of the object can be clamped and fixed. When the two groups of clamping rods 34 move away from each other, the two sides of the surface of the object can be released. When the top of the clamping rod 34 slides on the outer surface of the fixing pin of the rotating frame 12, the top of the clamping rod 34 can be guided and limited, so as to ensure the stability of the clamping rod 34 during rotation.

[0032] In addition, the end of the clamping rod 34 is provided with a rubber pad, which can make the two sides of the object clamped more firmly and avoid the problem of wear caused by metal extrusion.

[0033] In one embodiment, reference Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The adsorption mechanism 4 includes a piston rod 41 sliding inside the rotating rod 2, an adsorption plate 42 is connected to the end of the piston rod 41, the top of the adsorption plate 42 is connected to the inner bottom wall of the rotating rod 2 through a pipeline, the inner top wall of the rotating rod 2 is slidably connected to a piston rod 43, the top of the piston rod 43 is connected to an ejection plate 44 through a bearing, the ejection plate 44 is fixed directly above the servo motor 61, and a through hole 431 and an air leakage hole 432 are respectively provided on the surface of the rotating rod 2, the through hole 431 is located directly above the air leakage hole 432, the air leakage hole 432 is connected to the internal thread of the connecting bolt 53, a guide groove 45 is provided inside the connecting tube 1, the ejection plate 44 slides inside the guide groove 45, a return spring 46 is fixedly connected between the ejection plate 44 and the guide groove 45, a return spring 411 is sleeved on the surface of the piston rod 41, and the end of the return spring 411 is fixedly connected to the inner bottom wall of the rotating rod 2.

[0034] By adopting such a scheme, the suction plate 42 at the bottom of the piston rod 41 is adsorbed on the top of the object so that the object can be adsorbed in advance before being lifted. Through this arrangement, the clamping effect can be provided again, preventing the problem of slipping caused by single clamping, and further improving the stability of the object lifting.

[0035] During specific operation, the piston rod 41 slides inside the rotating rod 2, and the suction plate 42 at the end of the piston rod 41 can be automatically moved downward under its own weight and the pulling force of the return spring 411, so that the suction plate 42 is located directly under the rotating rod 2. When the object is directly under the rotating rod 2, the object will contact the bottom of the suction plate 42, and the rotating rod 2 drives the clamping rod 34 to move downward as a whole, so that the clamping rod 34 is located on both sides of the object. Since the piston rod 41 slides inside the rotating rod 2, when the rotating rod 2 moves downward, the plug rod 41 is located above the object, so the piston rod 41 will not be displaced, and when the rotating rod 2 is in the downward position When the piston rod 41 is moved, the cavity between the return spring 411 sleeved with the piston rod 41 will gradually become larger. When the cavity becomes larger, an adsorption force can be generated. The adsorption force will extract the gas between the adsorption plate 42 and the object through the pipeline, so the adsorption plate 42 will be vacuum adsorbed on the surface of the object. At the same time, when the piston rod 41 moves upward inside the rotating rod 2, it will squeeze the gas on the inner wall of the rotating rod 2. The squeezed gas will push the piston rod 43 and the ejection plate 44 to move upward. During the movement of the ejection plate 44, the servo motor 61 will be driven to move, so as to move the entire drive unit a certain distance. At this time, the main gear 63 will mesh with the highest position of the meshing gear ring 55. Through the opening of the through hole 431, when the bottom of the second piston rod 43 exceeds the position of the through hole 431, the gas inside the rotating rod 2 will leak through the through hole 431, thereby ensuring that the second piston rod 43 is only located above the through hole 431. At this time, it can be ensured that the driving part fixed to the ejection plate 44 is at a specific height, so as to ensure that the driving part can normally drive the meshing gear ring 55 to rotate. When the object is clamped and the sliding sleeve 51 needs to be moved downward, the staff will rotate the connecting bolt 53 to disengage the connecting bolt 53 from the air vent hole 432. At this time, the air vent hole 432 will release the pressure of the gas inside the rotating rod 2. At this time, the second piston rod 43 will automatically fall down without high-pressure gas. At the same time, the guide groove 45 is opened to guide and limit the ejection plate 44, and the reset spring 46 is set to apply a thrust to the top of the ejection plate 44 to automatically reset the ejection plate 44 without thrust. When the suction plate 42 needs to release the suction force on the top of the object, when the object is on the ground and the clamping mechanism 3 is away from both sides of the object, the connecting tube 1 drives the rotating rod 2 to move upward, so that when the rotating rod 2 moves upward, the piston rod 41 is synchronously driven to move synchronously. Since the suction plate 42 at the end of the piston rod 41 is adsorbed on the upper surface of the object, the one-way valve on the surface of the pipeline is used to release the gas, so as to remove the gas between the return spring 411 of the piston rod 41 and the rotating rod 2, so as to return the gas to the suction plate 42 and the object. At this time, there is no vacuum adsorption between the suction plate 42 and the object, so as to release the connection between the suction plate 42 and the object. During the downward return of the piston rod 41, the gas between the piston rod 1 41 and the piston rod 2 43 will be extracted. Since the piston rod 2 43 releases part of the gas when moving upward, the piston rod 2 43 will not be returned to its original position. At this time, the air vent 432 is opened to compensate for the gas between the piston rod 1 41 and the piston rod 2 43. Therefore, the downward movement of the piston rod 1 will not drive the piston rod 2 43 to move downward synchronously. The piston rod 2 43 moves downward under its own weight.

[0036] In one embodiment, reference Figure 1-Figure 8 The inner bottom wall of the connecting tube 1 is fixedly connected with an extrusion spring 56 , and the end of the extrusion spring 56 is attached to the upper surface of the meshing gear ring 55 . A handle 57 is fixedly connected to one side of the sliding sleeve 51 , and the handle 57 is located inside the connecting tube 1 .

[0037] By adopting such a solution, the meshing gear ring 55 is compressed or reset by setting the compression spring 56 .

[0038] During specific operation, with the setting of the squeezing spring 56 on the inner bottom wall of the upper part of the connecting tube 1, pressure can be applied to the top of the meshing gear ring 55 through the spring force of the squeezing spring 56, so that the meshing gear ring 55 is automatically reset to ensure the stability of the position of the meshing gear ring 55. At the same time, with the setting of the handle 57 on the side wall of the sliding sleeve 51, it is convenient for the staff to manually extract the handle 57, so as to control the sliding sleeve 51 to slide up and down.

Claims

1. An automatic hoisting device for a polytetrafluoroethylene anti-corrosion spraying production line, comprising a connecting tube (1), and a rotating rod (2) rotating on the inner wall of the connecting tube (1) through a bearing, characterized in that: Also includes: A driving portion is arranged on the inner wall of the connecting tube (1), and is used to drive the rotating rod (2) to rotate; A fixed disk (11) is rotated on the inner wall of the connecting tube (1) via a bearing, the bottom of the fixed disk (11) is fixedly connected to a rotating frame (12), the top of the fixed disk (11) is provided with an inner tooth groove (13), and the ends of the rotating rod (2) respectively penetrate the inner wall of the fixed disk (11), the rotating frame (12) and the inner tooth groove (13); A clamping mechanism (3) is arranged at the bottom of the rotating frame (12), and the rotating rod (2) is used to drive the clamping mechanism (3) to automatically grasp or release; An adsorption mechanism (4) sliding inside the rotating rod (2), wherein the adsorption mechanism (4) is used to fix the top of the object; A locking mechanism (5) disposed on the surface of the rotating rod (2), wherein the locking mechanism (5) is adapted to the size of the inner tooth groove (13); When the locking mechanism (5) is located above the inner tooth groove (13), it is used to allow the rotating rod (2) to rotate freely; when the locking mechanism (5) is located on the inner wall of the inner tooth groove (13), it is used to lock the rotating rod (2) in rotation.

2. According to claim 1, the automatic hoisting device for the polytetrafluoroethylene anti-corrosion spraying production line is characterized in that: The locking mechanism (5) comprises a sliding sleeve (51) sliding on the surface of the rotating rod (2), the upper and lower ends of the sliding sleeve (51) being respectively fixedly connected to a limit gear ring (52) and an engagement gear ring (55), the limit gear ring (52) being adapted to the internal dimensions of the internal tooth groove (13), a connecting bolt (53) being threadedly connected to the surface of the sliding sleeve (51), a sliding groove (54) being provided on the surface of the rotating rod (2), and the connecting bolt (53) sliding inside the sliding groove (54).

3. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 1 is characterized in that: The driving part comprises a servo motor (61) arranged on the inner top wall of the connecting cylinder (1); the output end of the servo motor (61) is fixedly connected to a driving shaft (62); the end of the driving shaft (62) is fixedly connected to a main gear (63); the main gear (63) is used to drive the meshing gear ring (55) to rotate.

4. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 1 is characterized in that: The clamping mechanism (3) comprises an L-shaped support frame (31) fixed to the bottom of the rotating frame (12); a worm wheel (32) is rotatably connected to the interior of the L-shaped support frame (31) via a bearing; a worm (33) is meshingly connected to the surface of the worm wheel (32); the worm (33) is fixedly connected to the surface of the rotating rod (2); both sides of the worm wheel (32) are fixedly connected to a clamping rod (34); and the top surface of the clamping rod (34) slides on the surface of a fixing pin of the rotating frame (12).

5. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 1 is characterized in that: The adsorption mechanism (4) comprises a piston rod (41) sliding inside the rotating rod (2); the end of the piston rod (41) is connected to an adsorption plate (42); the top of the adsorption plate (42) is connected to the inner bottom wall of the rotating rod (2) via a pipeline; the inner top wall of the rotating rod (2) is slidably connected to a piston rod (43); the top of the piston rod (43) is connected to an ejection plate (44) via a bearing; the ejection plate (44) is fixed directly above the servo motor (61).

6. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 1 is characterized in that: A through hole (431) and an air leakage hole (432) are respectively provided on the surface of the rotating rod (2); the through hole (431) is located directly above the air leakage hole (432); and the air leakage hole (432) is connected to the internal thread of the connecting bolt (53).

7. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 5 is characterized in that: A guide groove (45) is provided inside the connecting tube (1), the ejection plate (44) slides inside the guide groove (45), and a second return spring (46) is fixedly connected between the ejection plate (44) and the guide groove (45).

8. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 5 is characterized in that: A return spring 1 (411) is sleeved on the surface of the piston rod 1 (41), and the end of the return spring 1 (411) is fixedly connected to the inner bottom wall of the rotating rod (2).

9. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 1 is characterized in that: The inner bottom wall of the connecting cylinder (1) is fixedly connected to a pressing spring (56), and the end of the pressing spring (56) is in contact with the upper surface of the meshing gear ring (55).

10. The automatic hoisting device for a polyfluorocarbon anti-corrosion spraying production line according to claim 2 is characterized in that: A handle (57) is fixedly connected to one side of the sliding sleeve (51), and the handle (57) is located inside the connecting tube (1).

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