A device for placing a water turbine top cover

Abstract

The present invention discloses a turbine top cover placement device, including a hoisting unit and a lifting unit, the hoisting unit including a top plate, a motor, a circumferential adjustment plate and rotating teeth, the motor is arranged on the side of the top plate, the circumferential adjustment plate is arranged in the middle of the top plate, and the rotating teeth are arranged in the middle of the circumferential adjustment plate; the lifting unit includes a vertical stabilizing rod, a rotating worm gear and lifting claws, the rotating worm gear is arranged on the lower side of the vertical stabilizing rod, and the lifting claws are arranged on both sides of the rotating worm gear. The beneficial effects of the present invention are: making installation efficient and simple, reducing human intervention, improving the accuracy of centering, and avoiding the occurrence of large-scale installation site operation accidents.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine top cover placement, in particular to a water turbine top cover placement device. Background Art

[0002] In a hydroelectric power plant, the turbine cover is a key component that seals water flow and supports the water guide mechanism and water guide bearing parts. During the installation of a hydroelectric generator set, a hoist is required to lift the cover above the machine pit, align the guide vane center sleeve on the cover with the movable guide vane, and then slowly lower the cover to mate with the movable guide vane to complete the hoisting of the cover. However, existing turbine cover hoists can only achieve axial and radial movement and horizontal adjustment of the cover, but cannot achieve circumferential adjustment of the cover during the hoisting process. Currently, during the hoisting process of turbine covers in large domestic hydropower stations, manual adjustment of the circumferential alignment of the cover and the movable guide vane is still required. This has the disadvantages of causing the cover and the movable guide vane to become stuck and wear during docking, resulting in low efficiency. Furthermore, the cover equipment is large and the machine pit holes are deep, making it difficult to ensure the personal safety of personnel. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above problems and / or the problems existing in the existing turbine top cover placement device, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to provide a turbine top cover placement device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a turbine top cover placement device, comprising a lifting unit, the lifting unit comprising a top plate, a motor, a circumferential adjustment plate and a first rotating tooth, the motor is arranged on the side of the top plate, the circumferential adjustment plate is arranged in the middle of the top plate, and the first rotating tooth is arranged in the middle of the circumferential adjustment plate; a lifting unit, comprising a vertical stabilizing rod, a rotating worm gear and a lifting claw, the rotating worm gear is arranged on the lower side of the vertical stabilizing rod, and the lifting claws are arranged on both sides of the rotating worm gear.

[0007] As a preferred solution of the turbine top cover placement device described in the present invention, the circumferential adjustment plate is movably matched with the top plate, the circumferential adjustment plate passes through the top plate, a fixing sleeve is provided on its lower side, and a limiting block is symmetrically provided on the lower side of the fixing sleeve.

[0008] As a preferred solution of the turbine top cover placement device described in the present invention, wherein: an extension rod is provided on the lower side of the first rotating tooth, the extension rod is provided with a lifting thread, a limiting slider is provided on the lower side of the extension rod, a connecting sleeve is provided on the lower side of the limiting slider, the connecting sleeve includes a sliding groove whose side is slidably matched with the limiting slider, and a connecting head is provided on the lower side of the connecting sleeve.

[0009] As a preferred solution of the turbine top cover placement device of the present invention, the motor includes a driving shaft, a sliding shaft is provided on the side of the driving shaft, and the sliding shaft is provided with a first gear and a second gear.

[0010] As a preferred solution of the turbine top cover placement device of the present invention, a connecting plate and a bottom plate are provided on the vertical stabilizing rod, a gap is formed between the connecting plate and the bottom plate, and the bottom plate is hollow inside.

[0011] As a preferred solution of the turbine top cover placement device of the present invention, the rotating worm gear is movably engaged with the bottom plate, and a threaded sleeve is further provided on the top of the vertical stabilizing rod.

[0012] As a preferred solution of the turbine top cover placement device described in the present invention, the lifting claw includes a striker arranged on the side of the bottom plate, a lifting sleeve cooperating with the striker, and a spline sleeve is also provided on the upper side of the lifting sleeve.

[0013] As a preferred solution of the turbine top cover placement device of the present invention, the lifting claw further includes a fixing rod arranged in the middle hole at the bottom of the base plate, and a matching ring fixedly connected to the fixing rod.

[0014] As a preferred solution of the turbine top cover placement device described in the present invention, the matching ring is matched with the lifting sleeve, the striker is slidably matched with the lifting sleeve, and the lifting claw also includes a second rotating tooth that is movably matched with the bottom plate.

[0015] As a preferred solution of the turbine top cover placement device of the present invention, the threaded sleeve is movably matched with the extension rod.

[0016] The beneficial effects of the present invention are as follows: first, the lifting unit is moved to the upper side of the turbine top cover, and its lifting unit is extended into the interior of the lifting unit, and then it is lifted. During the lifting process, the extension rod and the rotating worm gear are first linked to open the lifting claws to lift the top cover, and the lifting claws can further trigger the firing pin, so that the extension rod can complete the rising and falling operations alone. When it is aligned with the part to be installed, the circumferential adjustment of the sliding shaft is adjusted for centering, making the installation efficient and simple, reducing human intervention, and improving the accuracy of centering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0018] Figure 1 This is a scene diagram of the turbine top cover placement device in the embodiment.

[0019] Figure 2 This is a structural diagram of location A of the turbine top cover placement device in the embodiment.

[0020] Figure 3 It is a side view of the turbine top cover placement device in the embodiment.

[0021] Figure 4 2. It is a structural diagram of the extension rod of the turbine top cover placement device in the embodiment.

[0022] Figure 5 Schematic diagram of the top plate of the hoisting unit of the turbine top cover placement device in the embodiment.

[0023] Figure 6 This is a structural diagram of location B of the turbine top cover placement device in the embodiment.

[0024] Figure 7 This is a structural diagram of location C of the turbine top cover placement device in the embodiment.

[0025] Figure 8 It is a bottom view of the turbine top cover placement device in the embodiment.

[0026] Figure 9 This is a structural diagram of location D of the turbine top cover placement device in the embodiment. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments. Example

[0030] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a turbine top cover placement device, which includes a hoisting unit 100 and a lifting unit 200. The lifting unit 200 is arranged at the front end of the hoisting unit 100. The hoisting unit 100 and the lifting unit 200 can respectively perform their own hoisting and lifting actions, and the correct installation of the turbine top cover is achieved through the mutual linkage and cooperation between the two.

[0031] Specifically, the hoisting unit 100 includes a top plate 101, a motor 102, a circumferential adjustment plate 103 and a first rotating tooth 104, the motor 102 is arranged on the side of the top plate 101, the circumferential adjustment plate 103 is arranged in the middle of the top plate 101, and the first rotating tooth 104 is arranged in the middle of the circumferential adjustment plate 103; the lifting unit 200 includes a vertical stabilizing rod 201, a rotating worm gear 202 and a lifting claw 203, the rotating worm gear 202 is arranged on the lower side of the vertical stabilizing rod 201, and the lifting claw 203 is arranged on both sides of the rotating worm gear 202.

[0032] Furthermore, the lifting unit 100 is installed on the platform for lifting the large turbine top cover, so that the fixing sleeve on the lower side of the circumferential adjustment plate 103 extends into the middle of the turbine top cover, and the lower lifting unit 200 is placed on the lower side of the turbine top cover. The rotating first rotating tooth 104 drives the rotating worm gear 202 on the lower side to rotate, so that the lifting claw 203 engaged with the rotating worm gear 202 is opened, and the lifting claw 203 is opened and lifted to the bottom of the turbine top cover, and the opened lifting claw 203 impacts the striker to the inside, so that the rotating worm gear 202 driven by the first rotating tooth 104 is disconnected. At this time, the extension rod only performs the lifting and lowering operation of the lifting unit and will not continue to open the lifting claw. Then, the lifted turbine top cover is placed to the position to be installed, and then the sliding shaft is adjusted so that the motor 102 engages the circumferential adjustment plate 103, driving the entire turbine top cover to be circumferentially aligned.

[0033] To summarize, first, the lifting unit is moved to the upper side of the turbine top cover, and its lifting unit is extended into the interior of the lifting unit, and then it is lifted. During the lifting process, the extension rod and the rotating worm gear are first linked to open the lifting claws to lift the top cover, and the lifting claws can further trigger the striker, so that the extension rod can complete the rising and falling operations alone. When it is aligned with the installation part, the sliding shaft is adjusted circumferentially for centering, making the installation efficient and simple, reducing human intervention, and improving the accuracy of centering. Example

[0034] Reference Figures 2 to 7 , which is the second embodiment of the present invention, is different from the first embodiment in that it also includes the circumferential adjustment plate 103 that is movably matched with the top plate 101, the circumferential adjustment plate 103 passes through the top plate 101, and a fixing sleeve 103a is provided on the lower side thereof, and a limiting block 103a-1 is symmetrically provided on the lower side of the fixing sleeve 103a.

[0035] Furthermore, an extension rod 104a is provided on the lower side of the first rotating tooth 104, and the extension rod 104a is provided with a lifting thread. A limiting slider 104b is provided on the lower side of the extension rod 104a, and a connecting sleeve 104c is provided on the lower side of the limiting slider 104b. The connecting sleeve 104c includes a sliding groove 104c-1 whose side is slidably matched with the limiting slider 104b, and a connecting head 104c-2 is provided on the lower side of the connecting sleeve 104c.

[0036] Preferably, the motor 102 includes a driving shaft 102a, a sliding shaft 102b is provided on the side of the driving shaft 102a, the sliding shaft 102b is provided with a first gear 102b-1 and a second gear 102b-11, and a connecting plate 201a and a base plate 201b are provided on the vertical stabilizing rod 201, a gap is formed between the connecting plate 201a and the base plate 201b, and the base plate 201b is hollow inside.

[0037] Specifically, the circumferential adjustment plate 103 is movably matched with the top plate 101, the fixed sleeve 103a is grooved on both sides, and the limit blocks 103a-1 are symmetrically arranged. The limit blocks 103a-1 are matched with the vertical stabilizing rod 201, so that the entire lifting unit can be operated in a straight line.

[0038] Preferably, the extension rod 104a passes through the circumferential adjustment plate 103, the upper first rotating tooth 104 cooperates with the motor 102, and the limiting slider 104b slides with the slide groove 104c-1 of the connecting sleeve 104c. Therefore, when the extension rod 104a rotates, it can drive the connecting sleeve 104c to rotate, so the connecting head 104c-2 rotates synchronously, and the slide groove 104c-1 can keep the connecting sleeve 104c connected during the rising and falling process.

[0039] Furthermore, the mutual cooperation between the driving shaft 102a and the sliding shaft 102b enables the first gear 102b-1 and the second gear 102b-11 to respectively engage with the first rotating tooth 104 and the circumferential rotating plate 103 under different usage conditions to perform different operations.

[0040] In the previous embodiment, the turbine top cover placement device includes a hoisting unit 100 and a lifting unit 200, the hoisting unit 100 includes a top plate 101, a motor 102, a circumferential adjustment plate 103 and a first rotating tooth 104, the motor 102 is arranged on the side of the top plate 101, the circumferential adjustment plate 103 is arranged in the middle of the top plate 101, and the first rotating tooth 104 is arranged in the middle of the circumferential adjustment plate 103; the lifting unit 200 includes a vertical stabilizing rod 201, a rotating worm gear 202 and a lifting claw 203, the rotating worm gear 202 is arranged on the lower side of the vertical stabilizing rod 201, and the lifting claw 203 is arranged on both sides of the rotating worm gear 202.

[0041] Specifically, the lifting unit 100 is installed on a platform for lifting the large turbine top cover, so that the fixing sleeve on the lower side of the circumferential adjustment plate 103 extends into the middle of the turbine top cover, and the lower lifting unit 200 is placed on the lower side of the turbine top cover. The rotating first rotating tooth 104 drives the rotating worm gear 202 on the lower side to rotate, so that the lifting claw 203 engaged with the rotating worm gear 202 is opened, and the lifting claw 203 is opened and lifted to the bottom of the turbine top cover, and the opened lifting claw 203 impacts the striker into the inside, so that the rotating worm gear 202 driven by the first rotating tooth 104 is disconnected. At this time, the extension rod only performs the lifting and lowering operation of the lifting unit and will not continue to open the lifting claw. Then, the lifted turbine top cover is placed to the position to be installed, and then the sliding shaft is adjusted so that the motor 102 engages the circumferential adjustment plate 103, driving the entire turbine top cover to be circumferentially aligned.

[0042] In this embodiment, the first gear 102b-1 of the sliding shaft 102b is first used to engage the first rotating tooth 104 to drive the extension rod 104a to rotate. The rotation of the extension rod 104a drives the rotation of the thread below, so that the vertical stabilizing rod 201 that cooperates with the thread completes the rising and falling operations. At the same time, the limiting slider 104b on the lower side of the extension rod 104a cooperates with the connecting sleeve 104c to complete the telescopic operation. During the rotation process, the connecting sleeve 104c remains engaged with the rotating worm gear 202 under the action of the limiting slider 104b, and the lifting claw is opened to support the turbine top cover and move the turbine top cover toward the target direction. Example

[0043] Reference Figures 1 to 9, which is the third embodiment of the present invention, is different from the previous two embodiments in that: a connecting plate 201a and a bottom plate 201b are provided on the vertical stabilizing bar 201, a gap is formed between the connecting plate 201a and the bottom plate 201b, and the bottom plate 201b is hollow inside.

[0044] Specifically, the rotating worm gear 202 is movably engaged on the base plate 201b, and a threaded sleeve 201c is also provided on the top of the vertical stabilizing rod 201. The lifting claw 203 includes a striker 203a provided on the side of the base plate 201b, and a lifting sleeve 203a-1 cooperating with the striker 203a. A spline sleeve 203a-2 is also provided on the upper side of the lifting sleeve 203a-1.

[0045] Preferably, the lifting claw 203 also includes a fixed rod 203b arranged in the bottom hole of the base plate 201b, a matching ring 203b-1 fixedly connected to the fixed rod 203b, the matching ring 203b-1 cooperates with the lifting sleeve 203a-1, the firing pin 203a slides in cooperation with the lifting sleeve 203a-1, the lifting claw 203 also includes a second rotating tooth 203c that is movably cooperated with the base plate 201b, and the threaded sleeve 201c is movably cooperated with the extension rod 104a.

[0046] Specifically, the threaded sleeve 201c in the vertical stabilizer bar 201 cooperates with the extension rod 104a, and the grooves on both sides of the vertical stabilizer bar 201 engage with the limit blocks 103a on both sides of the fixed sleeve 103a, so that the vertical stabilizer bar 201 cannot complete rotation, while the cooperation between the threaded sleeve 201c and the extension rod 104a enables it to complete the ascent and descent operation. During the ascent and descent process, the rotating worm gear 202 located on the lower side of the stabilizer bar 201 is connected to the connecting sleeve 104c through the lifting sleeve 203a-1. When the lifting claw is opened, the striker 203a presses against the bottom of the lifting sleeve 203a-1, causing the lifting sleeve 203a-1 to rise, so that the spline sleeve 203a-2 on its top disengages from the rotating worm gear 202. The rotating worm gear 202 stops rotating at this time. The lifting claw structure is an "L" structure, and the shorter side contacts the bottom plate 201b to stop rotating, continuously pressing the striker, while the upper connecting sleeve 104c always keeps rotating. Therefore, after completing the lifting, the lifting unit 100 can continue to complete the rising and lowering operations.

[0047] In the first two embodiments, the circumferential adjustment plate 103 is movably matched with the top plate 101. The circumferential adjustment plate 103 passes through the top plate 101, and a fixing sleeve 103a is provided on its lower side. A limiting block 103a-1 is symmetrically provided on the lower side of the fixing sleeve 103a.

[0048] Furthermore, an extension rod 104a is provided on the lower side of the first rotating tooth 104, and the extension rod 104a is provided with a lifting thread. A limiting slider 104b is provided on the lower side of the extension rod 104a, and a connecting sleeve 104c is provided on the lower side of the limiting slider 104b. The connecting sleeve 104c includes a sliding groove 104c-1 whose side is slidably matched with the limiting slider 104b, and a connecting head 104c-2 is provided on the lower side of the connecting sleeve 104c.

[0049] Preferably, the motor 102 includes a driving shaft 102a, a sliding shaft 102b is provided on the side of the driving shaft 102a, the sliding shaft 102b is provided with a first gear 102b-1 and a second gear 102b-11, and a connecting plate 201a and a base plate 201b are provided on the vertical stabilizing rod 201, a gap is formed between the connecting plate 201a and the base plate 201b, and the base plate 201b is hollow inside.

[0050] Specifically, the circumferential adjustment plate 103 is movably matched with the top plate 101, the fixed sleeve 103a is grooved on both sides, and the limit blocks 103a-1 are symmetrically arranged. The limit blocks 103a-1 are matched with the vertical stabilizing rod 201, so that the entire lifting unit can be operated in a straight line.

[0051] Preferably, the extension rod 104a passes through the circumferential adjustment plate 103, the upper first rotating tooth 104 cooperates with the motor 102, and the limiting slider 104b slides with the slide groove 104c-1 of the connecting sleeve 104c. Therefore, when the extension rod 104a rotates, it can drive the connecting sleeve 104c to rotate, so the connecting head 104c-2 rotates synchronously, and the slide groove 104c-1 can keep the connecting sleeve 104c connected during the rising and falling process.

[0052] Furthermore, the mutual cooperation between the driving shaft 102a and the sliding shaft 102b enables the first gear 102b-1 and the second gear 102b-11 to respectively engage with the first rotating tooth 104 and the circumferential rotating plate 103 under different usage conditions to perform different operations.

[0053] In the first two embodiments, the turbine top cover placement device includes a hoisting unit 100 and a lifting unit 200, the hoisting unit 100 includes a top plate 101, a motor 102, a circumferential adjustment plate 103 and a first rotating tooth 104, the motor 102 is arranged on the side of the top plate 101, the circumferential adjustment plate 103 is arranged in the middle of the top plate 101, and the first rotating tooth 104 is arranged in the middle of the circumferential adjustment plate 103; the lifting unit 200 includes a vertical stabilizing rod 201, a rotating worm gear 202 and a lifting claw 203, the rotating worm gear 202 is arranged on the lower side of the vertical stabilizing rod 201, and the lifting claw 203 is arranged on both sides of the rotating worm gear 202.

[0054] Specifically, the lifting unit 100 is installed on a platform for lifting the large turbine top cover, so that the fixing sleeve on the lower side of the circumferential adjustment plate 103 extends into the middle of the turbine top cover, and the lower lifting unit 200 is placed on the lower side of the turbine top cover. The rotating first rotating tooth 104 drives the rotating worm gear 202 on the lower side to rotate, so that the lifting claw 203 engaged with the rotating worm gear 202 is opened, and the lifting claw 203 is opened and lifted to the bottom of the turbine top cover, and the opened lifting claw 203 impacts the striker into the inside, so that the rotating worm gear 202 driven by the first rotating tooth 104 is disconnected. At this time, the extension rod only performs the lifting and lowering operation of the lifting unit and will not continue to open the lifting claw. Then, the lifted turbine top cover is placed to the position to be installed, and then the sliding shaft is adjusted so that the motor 102 engages the circumferential adjustment plate 103, driving the entire turbine top cover to be circumferentially aligned.

[0055] When in use, first use the first gear 102b-1 of the sliding shaft 102b to engage the first rotating tooth 104, driving the extension rod 104a to rotate. The rotation of the extension rod 104a drives the rotation of the thread below, so that the vertical stabilizing rod 201 that cooperates with the thread completes the rising and falling operations. At the same time, the limiting slider 104b on the lower side of the extension rod 104a cooperates with the connecting sleeve 104c to complete the telescopic operation. During the rotation process, the connecting sleeve 104c remains engaged with the rotating worm gear 202 under the action of the limiting slider 104b, and causes the lifting claw to open to support the turbine top cover and move the turbine top cover toward the target direction.

[0056] In summary, when in use, first move the lifting unit to the upper side of the turbine top cover, extend its lifting unit into the interior of the lifting unit, and then lift it. During the lifting process, first link the extension rod and the rotating worm gear to open the lifting claws to lift the top cover, and the lifting claws can further trigger the firing pin, so that the extension rod can complete the rising and lowering operations alone. When it is aligned with the installation part, adjust the sliding shaft circumferential adjustment for centering, making the installation efficient and simple, reducing human intervention, and improving the accuracy of centering.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A turbine top cover placement device, characterized in that: include, A hoisting unit (100), the hoisting unit (100) comprising a top plate (101), a motor (102), a circumferential adjustment plate (103) and a first rotating tooth (104), the motor (102) being arranged on a side of the top plate (101), the circumferential adjustment plate (103) being arranged in the middle of the top plate (101), and the first rotating tooth (104) being arranged in the middle of the circumferential adjustment plate (103); and A lifting unit (200) comprising a vertical stabilizing rod (201), a rotating worm wheel (202), and lifting claws (203), wherein the rotating worm wheel (202) is arranged on the lower side of the vertical stabilizing rod (201), and the lifting claws (203) are arranged on both sides of the rotating worm wheel (202); The lifting claw (203) comprises a striker (203a) arranged on the side of the base plate (201b), and a lifting sleeve (203a-1) matched with the striker (203a). The lifting claw (203) further comprises a fixing rod (203b) arranged in the bottom hole of the base plate (201b), and a matching ring (203b-1) fixedly connected to the fixing rod (203b). The matching ring (203b-1) matches with the lifting sleeve (203a-1), and the striker (203a) and the lifting sleeve (203a-1) are slidably matched.

2. The turbine top cover placement device according to claim 1, characterized in that: The circumferential adjustment plate (103) is movably matched with the top plate (101), the circumferential adjustment plate (103) passes through the top plate (101), a fixing sleeve (103a) is provided on the lower side thereof, and a limiting block (103a-1) is symmetrically provided on the lower side of the fixing sleeve (103a).

3. The turbine top cover placement device according to claim 1 or 2, characterized in that: An extension rod (104a) is provided on the lower side of the first rotating tooth (104), and the extension rod (104a) is provided with a lifting thread. A limiting slider (104b) is provided on the lower side of the extension rod (104a), and a connecting sleeve (104c) is provided on the lower side of the limiting slider (104b). The connecting sleeve (104c) includes a sliding groove (104c-1) whose side is slidably matched with the limiting slider (104b), and a connecting head (104c-2) is provided on the lower side of the connecting sleeve (104c).

4. The turbine top cover placement device according to claim 3, characterized in that: The motor (102) comprises a driving shaft (102a), a sliding shaft (102b) is provided on the side of the driving shaft (102a), and the sliding shaft (102b) is provided with a first gear (102b-1) and a second gear (102b-11).

5. The turbine top cover placement device according to any one of claims 1, 2 or 4, characterized in that: A connecting plate (201a) and a bottom plate (201b) are provided on the vertical stabilizing rod (201), a gap is formed between the connecting plate (201a) and the bottom plate (201b), and the bottom plate (201b) is hollow inside.

6. The turbine top cover placement device according to claim 5, characterized in that: The rotating worm gear (202) is movably engaged with the bottom plate (201b), and a threaded sleeve (201c) is further provided on the top of the vertical stabilizing rod (201).

7. The turbine top cover placement device according to claim 1, characterized in that: A spline sleeve (203a-2) is also provided on the upper side of the lifting sleeve (203a-1).

8. The turbine top cover placement device according to claim 1, characterized in that: The lifting claw (203) further comprises a second rotating tooth (203c) movably engaged with the bottom plate (201b).

9. The turbine top cover placement device according to claim 6, characterized in that: The threaded sleeve (201c) is movably matched with the extension rod (104a).

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