Turning gear for steam turbine

Abstract

The turning gear comprises a turning motor, a supporting transverse plate is fixedly arranged on the lower side face of the turning motor, a rotating disc is movably arranged on the lower side face of the supporting transverse plate, the lower side face of the rotating disc is rotationally connected with a supporting box body, a driving structure is arranged in the supporting box body, and the driving structure is in driving connection with the rotating disc. A carrier plate is fixedly arranged on the lower side face of the supporting box body, self-locking universal wheels are arranged on the lower side of the carrier plate, and a push rod is vertically and fixedly arranged on one side of the carrier plate. The carrying plate is matched with the self-locking universal wheels, so that moving of the turning device is facilitated, the problem that workers are prone to being injured in the carrying process is solved, meanwhile, the supporting box body can conduct lifting motion on the turning motor on the upper side of the supporting transverse plate, the turning device can be suitable for turning work of different heights, the rotating disc is driven to rotate through the driving structure, and the working efficiency is improved. The angle adjusting device is convenient and fast to adjust, time-saving and labor-saving, and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of a turning gear device, in particular to a turning gear device for a steam turbine. Background Art

[0002] The cranking device refers to the process of manually turning the motor a few times before starting the motor to determine whether the load driven by the motor (i.e. the mechanical or transmission part) is stuck and the resistance is increased, so as to prevent the starting load of the motor from increasing and damaging the motor (i.e. burning out). It is widely used in the field of steam turbine cranking.

[0003] The existing turbine turning device generally includes a driving mechanism, a base, a support and a turning mechanism, wherein the support is arranged at the top of the base, the driving mechanism is arranged at the top of the support, the turning mechanism is arranged at the output end of the driving mechanism, and the turning mechanism is located at the upper right side of the base. When using the turning device, the staff needs to move the entire device to the position of the turbine and then connect it to the turbine.

[0004] However, the existing winch devices are usually heavy and require multiple workers to lift them to the designated location, or use other means of transportation to transport them to the designated location. Either method requires a lot of manual labor, has low work efficiency, and is prone to cause injuries to workers during the transportation process. Utility Model Content

[0005] In view of the technical problems in the prior art, the utility model provides a turning device for a steam turbine, aiming to solve the above problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A turning device for a steam turbine includes a turning motor and further includes:

[0008] A supporting horizontal plate, which is fixed on the lower side of the turning motor;

[0009] A turntable, which is arranged on the lower side of the supporting transverse plate, and the lower side of the supporting transverse plate is movably connected to the turntable;

[0010] A supporting box body is arranged on the lower side of the turntable and is rotatably connected to the turntable;

[0011] A driving structure, which is disposed in the supporting box and is drivingly connected to the turntable;

[0012] The carrier plate is fixedly arranged on the lower side of the supporting box body, the lower side of the carrier plate is provided with a self-locking universal wheel, and one side of the carrier plate is vertically fixed with a push rod.

[0013] Preferably, a first movable block is provided on the lower side of the supporting cross plate, and a sliding groove is horizontally provided on the upper side of the turntable corresponding to the first movable block, the first movable block can slide in the sliding groove, a threaded rod is horizontally provided in the sliding groove, the threaded rod passes through the first movable block and is threadedly connected thereto, and both ends of the threaded rod are inserted into both sides of the sliding groove and are rotatably connected thereto.

[0014] Preferably, a driving motor is fixedly provided on one end of the threaded rod corresponding to one side of the turntable, and the driving end of the driving motor is drivingly connected to the threaded rod.

[0015] Preferably, the supporting box includes a shell, a hydraulic cylinder is provided at the bottom of the shell, a second movable block is fixedly provided on the top of the hydraulic cylinder, the outer side wall of the second movable block is slidably connected to the inner side wall of the shell, a rotating shaft is provided on the lower side of the turntable corresponding to the second movable block, the rotating shaft is inserted in the middle of the upper end of the second movable block and is rotatably connected thereto, a limiting disc is provided at the bottom of one end of the rotating shaft located in the second movable block, and the limiting disc is rotatably connected to the second movable block.

[0016] Preferably, the inner wall of the shell is provided with a T-shaped sliding block corresponding to the second movable block, and the second movable block is provided with a T-shaped sliding groove slidably connected thereto corresponding to the T-shaped sliding block.

[0017] Preferably, a first annular groove is provided on the upper side of the second movable block corresponding to the bottom of the turntable, a first ball is rolled in the first annular groove, and a second annular groove is provided inside the second movable block corresponding to the lower side of the limiting disc, a second ball is rolled in the second annular groove.

[0018] Preferably, the driving structure includes a rotating rod, which passes horizontally through the side wall of the second movable block and extends to the lower side of the limiting disc. The rotating rod is rotatably connected to the second movable block. A movable groove is provided on the side wall of the shell corresponding to the rotating rod. A bevel gear is fixedly provided at one end of the rotating rod located in the second movable block, and a bevel gear ring meshing with the bevel gear is provided on the lower side of the limiting disc corresponding to the bevel gear.

[0019] Preferably, an adjusting hand wheel is provided at the end of the rotating rod located outside the second movable block.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model provides a turning device for a steam turbine. A carrier plate cooperates with a self-locking universal wheel to facilitate the movement of the turning device, thereby reducing the problem of workers being easily injured during transportation. At the same time, the second movable block can be lifted up by a hydraulic cylinder at the bottom of the shell body, so that it can be suitable for turning operations at different heights. Cooperating with a T-shaped slider and a T-shaped slide groove, it can be ensured to remain stable during the lifting process. At the same time, the adjusting hand wheel can be turned to drive the bevel gear of the rotating rod to rotate, so that the bevel gear ring meshing with it rotates synchronously, thereby driving the turntable to rotate on the side of the second movable block, so as to be adjusted to an angle that is convenient for the turning motor to work. The adjustment is convenient, time-saving and labor-saving, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a turning device for a steam turbine according to the utility model;

[0023] Figure 2 This is an enlarged view of point A of a turning device for a steam turbine described in the utility model;

[0024] Figure 3 The utility model is a schematic diagram of the connection between the T-shaped slide groove and the T-shaped slider of the turning device for a steam turbine.

[0025] In the figure: 1. turning motor; 2. supporting cross plate; 21. first movable block; 3. turntable; 31. slide groove; 32. threaded rod; 33. driving motor; 34. rotating shaft; 35. limiting disc; 36. conical gear ring; 4. supporting box; 41. shell; 42. hydraulic cylinder; 43. second movable block; 44. T-type slider; 45. T-type slide groove; 46. first annular groove; 47. first ball; 48. second annular groove; 49. second ball; 5. driving structure; 51. rotating rod; 52. movable groove; 53. conical gear; 54. adjusting hand wheel; 6. carrier plate; 61. self-locking universal wheel; 62. push rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 3In the embodiment proposed in the present application, a turbine turning device comprises a turning motor 1, a supporting horizontal plate 2 is fixedly provided on the lower side of the turning motor 1, a turntable 3 is movably provided on the lower side of the supporting horizontal plate 2, a supporting box 4 is rotatably connected to the lower side of the turntable 3, a driving structure 5 is provided in the supporting box 4, the driving structure 5 is drivingly connected to the turntable 3, a carrier plate 6 is fixedly provided on the lower side of the supporting box 4, a self-locking universal wheel 61 is provided on the lower side of the carrier plate 6, and a push rod 62 is vertically fixed on one side of the carrier plate 6;

[0028] By cooperating with the carrier plate 6 and the self-locking universal wheel 61, the movement of the turning device is facilitated, thereby reducing the problem of workers being easily injured during transportation. At the same time, the supporting box 4 can lift the turning motor 1 on the supporting cross plate 2, so that it can be suitable for turning operations at different heights. The turntable 3 is driven to rotate through the driving structure 5, so as to be adjusted to an angle that is convenient for the turning motor 1 to work. The adjustment is convenient, time-saving, labor-saving and highly practical.

[0029] In another embodiment, see Figures 1 to 3 A first movable block 21 is provided on the lower side of the supporting cross plate 2, and a slide groove 31 is horizontally provided on the upper side of the turntable 3 corresponding to the first movable block 21. The first movable block 21 can slide in the slide groove 31, and a threaded rod 32 is horizontally provided in the slide groove 31. The threaded rod 32 passes through the first movable block 21 and is threadedly connected thereto. Both ends of the threaded rod 32 are inserted into both sides of the slide groove 31 and are rotatably connected thereto. A driving motor 33 is fixedly provided on one end of the threaded rod 32 corresponding to one side of the turntable 3, and the driving end of the driving motor 33 is drivingly connected to the threaded rod 32;

[0030] By driving the motor 33 to rotate, the supporting cross plate 2 is driven to move horizontally, thereby driving the turning motor 1 to move to a corresponding position to perform turning operation.

[0031] In another embodiment, see Figures 1 to 3 The supporting box 4 includes a shell 41, a hydraulic cylinder 42 is provided at the bottom of the shell 41, a second movable block 43 is fixedly provided on the top of the hydraulic cylinder 42, the outer wall of the second movable block 43 is slidably connected to the inner wall of the shell 41, a T-shaped sliding block 44 is provided on the inner wall of the shell 41 corresponding to the second movable block 43, and the second movable block 43 is provided with a T-shaped sliding groove 45 slidably connected thereto corresponding to the T-shaped sliding block 44, so as to ensure that it remains stable during the lifting process, a rotating shaft 34 is provided on the lower side of the turntable 3 corresponding to the second movable block 43, the rotating shaft 34 is inserted in the middle of the upper end of the second movable block 43 and is rotatably connected thereto, a limiting disc 35 is provided at the bottom of one end of the rotating shaft 34 located in the second movable block 43, the limiting disc 35 is rotatably connected to the second movable block 43, and the limiting disc 35 can limit the turntable 3 during the rotation process to ensure the stability of the rotation process;

[0032] In this embodiment, a first annular groove 46 is provided on the upper side of the second movable block 43 corresponding to the bottom of the turntable 3, and a first ball 47 is rolled in the first annular groove 46. A second annular groove 48 is provided inside the second movable block 43 corresponding to the lower side of the limiting disk 35, and a second ball 49 is rolled in the second annular groove 48, which further ensures stability during rotation and reduces friction during rotation.

[0033] In another embodiment, see Figures 1 to 3 The driving structure 5 includes a rotating rod 51, which passes through the side wall of the second movable block 43 horizontally and extends to the lower side of the limiting disc 35. The rotating rod 51 is rotatably connected to the second movable block 43. A movable groove 52 is provided on the side wall of the shell 41 corresponding to the rotating rod 51. A bevel gear 53 is fixedly provided at one end of the rotating rod 51 located in the second movable block 43. A bevel gear ring 36 meshing with the bevel gear 53 is provided at the lower side of the limiting disc 35 corresponding to the bevel gear 53. An adjusting hand wheel 54 is provided at one end of the rotating rod 51 located outside the second movable block 43.

[0034] By turning the adjusting hand wheel 54, the bevel gear 53 of the rotating rod 51 is driven to rotate, so that the bevel gear ring 36 meshing therewith rotates synchronously, thereby driving the turntable 3 to rotate on the side of the second movable block 43, so as to adjust to an angle that is convenient for the operation of the turning motor 1, and the adjustment is convenient.

[0035] Working principle: The utility model provides a turbine turning device, in which the carrier plate 6 cooperates with the self-locking universal wheel 61 to facilitate the staff to push the turning equipment, and the second movable block 43 can be lifted by the hydraulic cylinder 42 at the bottom of the shell 41, so that the height of the turning motor 1 can be adjusted to an appropriate working height; then by rotating the adjusting hand wheel 54, the bevel gear 53 of the rotating rod 51 is driven to rotate, so that the bevel gear ring 36 meshing with it rotates synchronously, thereby driving the turntable 3 to rotate on the side of the second movable block 43, so as to adjust to an angle that is convenient for the turning motor 1 to work, and the adjustment is convenient, time-saving and labor-saving, and the practicability is high.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turning device for a steam turbine, comprising a turning motor (1), characterized in that: Also includes: A supporting horizontal plate (2) is fixedly arranged on the lower side of the turning motor (1); A turntable (3) is arranged on the lower side of the supporting transverse plate (2), and the lower side of the supporting transverse plate (2) is movably connected to the turntable (3); A supporting box (4) is disposed on the lower side of the turntable (3) and is rotatably connected to the turntable (3); A driving structure (5) is disposed in the supporting box (4) and is drivingly connected to the turntable (3); A carrier plate (6) is fixedly arranged on the lower side of the supporting box body (4), a self-locking universal wheel (61) is arranged on the lower side of the carrier plate (6), and a push rod (62) is vertically fixedly arranged on one side of the carrier plate (6).

2. A turning device for a steam turbine according to claim 1, characterized in that: A first movable block (21) is provided on the lower side of the supporting transverse plate (2), and a sliding groove (31) is provided on the upper side of the rotating disk (3) in a transverse direction corresponding to the first movable block (21). The first movable block (21) can slide in the sliding groove (31), and a threaded rod (32) is provided in a transverse direction in the sliding groove (31). The threaded rod (32) passes through the first movable block (21) and is threadedly connected thereto. Two ends of the threaded rod (32) are inserted into two sides of the sliding groove (31) and are rotatably connected thereto.

3. A turning device for a steam turbine according to claim 2, characterized in that: A driving motor (33) is fixedly provided at one end of the threaded rod (32) corresponding to one side of the rotating disk (3), and the driving end of the driving motor (33) is drivingly connected to the threaded rod (32).

4. A turning device for a steam turbine according to claim 1, characterized in that: The supporting box (4) comprises a shell (41), a hydraulic cylinder (42) is provided at the bottom of the shell (41), a second movable block (43) is fixedly provided at the top of the hydraulic cylinder (42), an outer wall of the second movable block (43) is slidably connected to an inner wall of the shell (41), a rotating shaft (34) is provided on the lower side of the turntable (3) corresponding to the second movable block (43), the rotating shaft (34) is inserted into the middle of the upper end of the second movable block (43) and is rotatably connected thereto, a limiting disc (35) is provided at the bottom of one end of the rotating shaft (34) located in the second movable block (43), and the limiting disc (35) is rotatably connected to the second movable block (43).

5. A turning device for a steam turbine according to claim 4, characterized in that: The inner wall of the housing (41) is provided with a T-shaped sliding block (44) corresponding to the second movable block (43), and the second movable block (43) is provided with a T-shaped sliding groove (45) slidably connected to the T-shaped sliding block (44) corresponding to the T-shaped sliding block (44).

6. A turning device for a steam turbine according to claim 4, characterized in that: A first annular groove (46) is provided on the upper side of the second movable block (43) corresponding to the bottom of the rotating disk (3), and a first ball (47) is rolled in the first annular groove (46). A second annular groove (48) is provided inside the second movable block (43) corresponding to the lower side of the limiting disc (35), and a second ball (49) is rolled in the second annular groove (48).

7. A turning device for a steam turbine according to claim 4, characterized in that: The driving structure (5) comprises a rotating rod (51) which passes through the side wall of the second movable block (43) transversely and extends to the lower side of the limiting disc (35); the rotating rod (51) is rotatably connected to the second movable block (43); a movable groove (52) is provided on the side wall of the housing (41) corresponding to the rotating rod (51); a bevel gear (53) is fixedly provided at one end of the rotating rod (51) located in the second movable block (43); and a bevel gear ring (36) meshing with the bevel gear (53) is provided on the lower side of the limiting disc (35) corresponding to the bevel gear (53).

8. A turning device for a steam turbine according to claim 7, characterized in that: An adjusting hand wheel (54) is provided at one end of the rotating rod (51) located outside the second movable block (43).

Images