[-shaped hoisting tool for overhauling bearing bush of large steam turbine

Abstract

The utility model relates to the technical field of hoisting tools, and discloses a C-shaped hoisting tool for overhauling a bearing bush of a large steam turbine, which comprises a support sleeve rod, a lifting rod, a lifting rod, a lifting rod and a lifting rod, and one end of the support sleeve rod is fixedly provided with a connecting component connected with hoisting equipment; the inner supporting rod is movably sleeved with the supporting sleeve rod, and a hoisting assembly used for being connected with a steam turbine bearing bush is fixedly arranged at one end of the inner supporting rod; the adjusting assembly is arranged between the supporting sleeve rod and the connecting assembly and used for adjusting the length of the hoisting tool. According to the hoisting tool, the hoisting position and height can be conveniently adjusted, a communicating pipe at the top of the steam turbine and a pit shield can be bypassed, so that the steam turbine bearing bush can be directly, rapidly, safely and stably hoisted by a travelling crane through the hoisting tool, the hoisting efficiency is improved, and the overhauling hoisting time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting tools, in particular to a large steam turbine bearing bush maintenance C-shaped hoisting tool. Background Technique

[0002] The steam turbine in a thermal power plant is one of the three major main engines and is the core power generation equipment. At present, thermal power in China is still the main power generation source. The steam turbine has a long operation cycle. After long-term operation, the bearing bush needs to be disassembled, inspected, repaired, etc., and vulnerable parts need to be replaced to ensure the stable operation of the unit and prevent non-stop events. At present, for all types of steam turbines in the entire industry, because the design is relatively compact, the bearing bush is designed at the depression groove, and there is also a connecting pipe blocking at the top of the large intermediate reheat unit. Therefore, when the bearing bush is overhauled during shutdown, hoisting is relatively difficult. Since the overhaul of the steam turbine bearing bush requires adjusting the back-up bearing tightness and bearing clearance, this leads to repeated hoisting and overhaul, a long hoisting and overhaul period, a large number of required personnel, a large labor intensity, and the overhaul quality cannot be effectively guaranteed. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a large steam turbine bearing bush maintenance C-shaped hoisting tool to solve the problem that in the prior art, the steam turbine bearing bush is designed at the depression groove, and there is also a connecting pipe blocking at the top of the large intermediate reheat unit. Therefore, when the bearing bush is overhauled during shutdown, hoisting is relatively difficult.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A large steam turbine bearing bush maintenance C-shaped hoisting tool, the hoisting tool includes:

[0006] A support sleeve rod, one end of the support sleeve rod is fixedly provided with a connection component connected to the hoisting equipment;

[0007] An inner support rod movably sleeved inside the support sleeve rod, one end of the inner support rod is fixedly provided with a hoisting component for connecting with the steam turbine bearing bush;

[0008] An adjustment component arranged between the support sleeve rod and the connection component for adjusting the length of the hoisting tool.

[0009] As a further improvement of the utility model, the connection component includes a first support rod fixedly connected to one end of the support sleeve rod. A first threaded rod is rotatably arranged inside the first support rod. One end of the first threaded rod penetrates through the first support rod and extends to be connected with a first adjustment cap. A first sliding rod is movably sleeved inside the first support rod. The first sliding rod is threadedly sleeved with the first threaded rod. One end of the first sliding rod is fixedly provided with a first fixing block. The upper surface of the first fixing block is fixedly provided with a lifting lug.

[0010] As a further improvement of the present invention, the lifting assembly includes a second support rod fixedly connected to one end of the inner support rod, a second threaded rod is rotatably arranged inside the second support rod, one end of the second threaded rod passes through the second support rod and is extended to be connected with a second adjustment cap, a second sliding rod is movably sleeved inside the second support rod, the second sliding rod is threadably sleeved with the second threaded rod, one end of the second sliding rod is fixedly connected to a second fixed block, and the bottom surface of the second fixed block is movably penetrated.

[0011] As a further improvement of the present invention, the adjusting assembly includes a mounting block fixedly arranged on the outer wall of the first support rod, the mounting block is rotatably sleeved with a third threaded rod, and one end of the third threaded rod is rotatably connected to the supporting sleeve rod, the other end of the third threaded rod is fixedly connected with a third adjusting cap, the outer wall of the third threaded rod is threadedly sleeved with a connecting sleeve block, a connecting rod is hingedly arranged on the connecting sleeve block, one end of the connecting rod is hingedly arranged with a connecting block, one end of the connecting block is fixedly connected with a sleeve block, the sleeve block and the supporting sleeve rod are movably sleeved with a hanging ring, a group of connecting rods are fixedly arranged on the bottom surface of the sleeve block, and one end of the connecting rod is fixedly connected to the second support rod.

[0012] As a further improvement of the utility model, mutually symmetrical guide grooves are provided on both sides of the support sleeve rod, and guide blocks corresponding to the guide grooves are fixedly provided on the inner wall of the sleeve block, and the guide blocks are slidably connected to the guide grooves.

[0013] As a further improvement of the utility model, one end of the support sleeve rod is fixedly sleeved with a limiting sleeve block.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] The utility model provides an adjustment component between the support sleeve rod and the connection component, and drives the connection sleeve block by rotating the third threaded rod. The connection sleeve block drives the sleeve block to slide on the outer wall of the support sleeve rod through the connection block. The sleeve block pushes the inner support rod to slide inside the support sleeve rod through the linkage rod, and the inner support rod drives the movement, thereby adjusting the lifting length between the lifting lug and the support lug, and can bypass the connecting pipe on the top of the steam turbine and the dimple to directly lift the steam turbine bearing shell quickly, safely and stably through the lifting tool with a crane, thereby improving the lifting efficiency and reducing the maintenance lifting time.

[0016] Furthermore, the utility model can adjust the horizontal position of the lifting lug and the second threaded rod by rotating the first threaded rod, so as to facilitate the adjustment of the hoisting position of the turbine bearing and improve the quality of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Provide a structural schematic diagram of an embodiment of a large steam turbine bearing overhaul U-shaped lifting tool of the present utility model;

[0018] Figure 2 Provide a structural schematic diagram of an embodiment of a large steam turbine bearing overhaul U-shaped lifting tool of the present utility model;

[0019] Figure 3 Provide a structural schematic diagram of an embodiment of a large steam turbine bearing overhaul U-shaped lifting tool of the present utility model.

[0020] Label description:

[0021] 1. Support sleeve rod;

[0022] 2. Connection assembly; 21. First support rod; 22. First threaded rod; 23. First adjusting cap; 24. First sliding rod; 25. First fixing block; 26. Lifting ear;

[0023] 3. Inner support rod;

[0024] 4. Lifting assembly; 41. Second support rod; 42. Second threaded rod; 43. Second adjusting cap; 44. Second sliding rod; 45. Second fixing block; 46. Hoisting ring;

[0025] 5. Adjusting assembly; 51. Installation block; 52. Third threaded rod; 53. Third adjusting cap; 54. Connecting sleeve block; 55. Connecting rod; 56. Connecting block; 57. Sleeve block; 58. Linking rod;

[0026] 6. Guide groove; 7. Guide block; 8. Limit sleeve block. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively with reference to the relevant accompanying drawings. Several embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] Example

[0032] like Figure 1 As shown, this embodiment provides an embodiment of a large-scale steam turbine bearing maintenance type lifting tool. In this embodiment, the lifting tool includes a support sleeve 1, and the interior of the support sleeve 1 is hollow, and one end of the support sleeve 1 is fixedly provided with a connecting assembly 2 connected to the lifting equipment, which is convenient for connection with the lifting equipment; an inner support rod 3 movably sleeved inside the support sleeve 1, and the inner support rod 3 and the support sleeve 1 are adapted to each other, and one end of the inner support rod 3 is fixedly provided with a lifting assembly 4 for connecting to the turbine bearing, which is convenient for lifting the turbine bearing; an adjusting assembly 5 arranged between the support sleeve 1 and the connecting assembly 2 for adjusting the length of the lifting tool, which is convenient for adjusting the lifting position according to the lifting environment, thereby improving the lifting efficiency.

[0033] For details, please refer to Figure 2 , Figure 3 In the embodiment, the connecting assembly 2 includes a first support rod 21 fixedly connected to one end of the support sleeve rod 1, and the first support rod 21 and the support sleeve rod 1 are vertically arranged, and the connection forms a right angle. The first support rod 21 is internally rotatably provided with a first threaded rod 22, one end of the first threaded rod 22 passes through the first support rod 21 and is extended to be connected with a first adjusting cap 23, and the outer wall of the first adjusting cap 23 is provided with anti-slip grooves, which can increase the friction force during hand rotation, and the first support rod 21 is internally movably sleeved with a first sliding rod 24, and the first sliding rod 24 and the first support rod 21 are adapted to each other and can be stably sleeved and moved with each other, the first sliding rod 24 and the first threaded rod 22 are threadedly sleeved, and one end of the first sliding rod 24 is fixedly provided with a first fixing block 25, and the upper surface of the first fixing block 25 is fixedly provided with a lifting ear 26, which is convenient for adjusting the position of the lifting ear 26, so that it is more stably connected to the lifting equipment.

[0034] It should be noted that threaded connection is a common application of the prior art, and the detailed structure thereof will not be described in detail in this embodiment, nor will it be shown in drawings.

[0035] In this embodiment, the lifting assembly 4 includes a second support rod 41 fixedly connected to one end of the inner support rod 3, and the second support rod 41 and the inner support rod 3 are vertically arranged, and the connection forms a right angle. The second support rod 41 is rotatably provided with a second threaded rod 42 inside, and one end of the second threaded rod 42 passes through the second support rod 41 and is extended to be connected with a second adjusting cap 43, and the outer wall of the second adjusting cap 43 is provided with anti-slip grooves, which can increase the friction during manual selection. The second support rod 41 is internally movably sleeved with a second sliding rod 44, and the second sliding rod 44 and the second support rod 41 are adapted to each other and can be stably sleeved and moved with each other. The second sliding rod 44 is threadedly sleeved with the second threaded rod 42, and one end of the second sliding rod 44 is fixedly connected with a second fixed block 45, and the bottom surface of the second fixed block 45 is movably penetrated with a lifting ring 46, which is convenient for lifting the turbine bearing in multiple directions and adjusting the lifting position of the lifting ring 46, making it more convenient to lift and repair the turbine bearing shaft.

[0036] The third threaded rod 52 is rotatably sleeved on the mounting block 51, and one end of the third threaded rod 52 is rotatably connected to the supporting sleeve rod 1, and the other end of the third threaded rod 52 is fixedly connected to a third adjusting cap 53, which is convenient for manual rotation and adjustment of the third adjusting cap 53, and the outer wall of the third threaded rod 52 is threadedly sleeved with a connecting sleeve block 54, and the connecting sleeve block 54 is hingedly provided with a connecting rod 55, and one end of the connecting rod 55 is hingedly provided with a connecting block 56, and one end of the connecting block 56 is fixedly connected with a sleeve block 57, and the sleeve block 57 is movably sleeved with the supporting sleeve rod 1, so as to facilitate the adjustment of the position of the sleeve block 57, and a group of connecting rods 58 are fixedly provided on the bottom surface of the sleeve block 57, and the connecting rods 58 are symmetrically arranged, and one end of the connecting rod 58 is fixedly connected to the second supporting rod 41, so as to facilitate the pushing of the second supporting rod 41 to move in the vertical direction, thereby adjusting the lifting position between the lifting ear 26 and the lifting ring 46, thereby improving the lifting efficiency.

[0037] Preferably, mutually symmetrical guide grooves 6 are provided on both sides of the support sleeve rod 1, and guide blocks 7 corresponding to the guide grooves 6 are fixedly provided on the inner wall of the sleeve block 57. The guide blocks 7 are slidably connected to the guide grooves 6, which can improve the stability of the vertical sliding of the sleeve block 57.

[0038] Furthermore, one end of the support sleeve rod 1 is fixedly sleeved with a limiting sleeve block 8, which can limit the sleeve block 57 to prevent it from falling off when movably sleeved with the support sleeve rod 1.

[0039] The working principle of this embodiment is as follows: according to the position of the depression groove designed by the steam turbine and the connecting pipe arranged on the top of the large steam turbine intermediate reheat unit, the third adjusting cap 53 is manually rotated, and the third adjusting cap 53 drives the third threaded rod 52 to rotate between the support sleeve rod 1 and the mounting block 51, and the third threaded rod 52 drives the connecting sleeve block 54 to move horizontally, and the connecting sleeve block 54 pushes the connecting block 56 to move through the connecting rod 55, and the connecting block 56 drives the sleeve block 57 to slide vertically on the outer wall of the support sleeve rod 1, and the sleeve block 57 drives the lifting assembly 4 to move vertically through the connecting rod 58, so that the lifting position of the lifting ring 46 is avoided from the connecting pipe arranged on the top of the large steam turbine intermediate reheat unit, so that the lifting work is more convenient, thereby improving the lifting efficiency.

[0040] In the above, by manually rotating the first adjusting cap 23, the first adjusting cap 23 drives the first sliding rod 24 to slide horizontally in the first support rod 21 through the first threaded rod 22, and the first sliding rod 24 drives the lifting ear 26 on the first fixed block 25 to move horizontally, thereby adjusting the connection position of the lifting ear 26 with the lifting equipment, which can adapt to different lifting requirements and improve the stability of the lifting.

[0041] Finally, by manually rotating the second adjusting cap 43, the second adjusting cap 43 drives the second sliding rod 44 to move horizontally in the second support rod 41 through the second threaded rod 42, and the second sliding rod 44 drives the lifting ring 46 on the second fixed block 45 to move horizontally, thereby adjusting the lifting position of the lifting ring 46 and the turbine bearing, so that the lifting of the turbine bearing is more stable.

[0042] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A large steam turbine bearing inspection C-shaped hoisting tool, characterized in that, The lifting tool comprises: A support sleeve rod (1), one end of which is fixedly provided with a connection assembly (2) connected to a lifting device; An inner support rod (3) movably sleeved inside the support sleeve rod (1), one end of the inner support rod (3) being fixedly provided with a hoisting assembly (4) for connecting with a turbine bearing bush; An adjustment component (5) is arranged between the support sleeve rod (1) and the connection component (2) and is used to adjust the length of the lifting tool.

2. The large steam turbine bearing bush overhaul C-shaped hoisting tool according to claim 1, characterized in that: The connecting assembly (2) comprises a first support rod (21) fixedly connected to one end of the support sleeve rod (1); a first threaded rod (22) is rotatably arranged inside the first support rod (21); one end of the first threaded rod (22) passes through the first support rod (21) and is extended to be connected to a first adjustment cap (23); a first sliding rod (24) is movably sleeved inside the first support rod (21); the first sliding rod (24) is threadably sleeved with the first threaded rod (22); a first fixing block (25) is fixedly arranged at one end of the first sliding rod (24); and a lifting ear (26) is fixedly arranged on the upper surface of the first fixing block (25).

3. A U-shaped lifting tool for overhauling the bearing bush of a large steam turbine according to claim 1, characterized in that: The lifting assembly (4) comprises a second support rod (41) fixedly connected to one end of the inner support rod (3); a second threaded rod (42) is rotatably arranged inside the second support rod (41); one end of the second threaded rod (42) passes through the second support rod (41) and is extended to be connected with a second adjustment cap (43); a second sliding rod (44) is movably sleeved inside the second support rod (41); the second sliding rod (44) is threadably sleeved with the second threaded rod (42); one end of the second sliding rod (44) is fixedly connected to a second fixing block (45); and a lifting ring (46) is movably penetrated through the bottom surface of the second fixing block (45).

4. A large steam turbine bearing bush overhaul C-shaped hoisting tool according to claim 2, characterized in that: The adjustment assembly (5) comprises a mounting block (51) fixedly arranged on the outer wall of the first support rod (21); a third threaded rod (52) is rotatably sleeved on the mounting block (51); one end of the third threaded rod (52) is rotatably connected to the support sleeve rod (1); the other end of the third threaded rod (52) is fixedly connected to a third adjustment cap (53); a connecting sleeve block (54) is threadably sleeved on the outer wall of the third threaded rod (52); a connecting rod (55) is hingedly arranged on the connecting sleeve block (54); one end of the connecting rod (55) is hingedly arranged with a connecting block (56); one end of the connecting block (56) is fixedly connected with a sleeve block (57); the sleeve block (57) is movably sleeved with the support sleeve rod (1); a group of linkage rods (58) are fixedly arranged on the bottom surface of the sleeve block (57); one end of the linkage rod (58) is fixedly connected to the second support rod (41).

5. The large steam turbine bearing bush overhaul C-shaped hoisting tool according to claim 4, characterized in that: The two sides of the support sleeve rod (1) are provided with mutually symmetrical guide grooves (6), and the inner wall of the sleeve block (57) is fixedly provided with a guide block (7) corresponding to the guide groove (6), and the guide block (7) is slidably connected to the guide groove (6).

6. The large steam turbine bearing bush overhaul C-shaped hoisting tool according to claim 1, characterized in that: One end of the support sleeve rod (1) is fixedly sleeved with a limiting sleeve block (8).

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