A lifting device for a water turbine pivot
By designing a lifting device for turbine pivots, employing a fixed and force-bearing mechanism, and directly connecting it to the lifting equipment, the problem of low lifting efficiency of turbine pivots in existing technologies is solved, and a highly efficient lifting process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA YANGTZE POWER
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-03
AI Technical Summary
In the existing technology, the hoisting of the turbine pivot is inefficient and cumbersome, requiring it to be moved to the outside and connected to the hoisting equipment first, which leads to low efficiency.
Design a lifting device for a turbine pivot, comprising a fixing mechanism and a force-bearing mechanism. The lifting equipment is directly connected to the force-bearing mechanism. By applying a force, the force-bearing mechanism is driven to move, which in turn drives the fixing mechanism and the turbine pivot to move synchronously, thereby achieving direct lifting.
This improved the efficiency of turbine pivot hoisting, reduced the complexity of the process, and enabled a highly efficient hoisting procedure.
Smart Images
Figure CN224449970U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic turbine pivot hoisting technology, and in particular to a hoisting tool for hydraulic turbine pivots. Background Technology
[0002] As a key component of a water turbine, the turbine pivot often needs to be removed from the turbine for maintenance during operation. Since the turbine pivot typically weighs over three tons, hoisting equipment is generally required for both removal and installation.
[0003] In existing technologies, workers typically connect the turbine pivot directly to the hoisting equipment to lift it. While this method achieves the lifting of the turbine pivot, it is inefficient and cumbersome because the turbine pivot is located inside the turbine. Therefore, the turbine pivot must first be moved to the outside before it can be connected to the hoisting equipment. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a lifting device for a water turbine pivot. To achieve the above objective, this utility model adopts the following technical solution:
[0005] A lifting device for a turbine pivot, the turbine pivot including a connecting shaft for passing through the interior of the turbine, and a connecting portion passing through the connecting shaft in a relatively fixed manner, the connecting portion having a plurality of threaded holes along its axial direction.
[0006] The lifting device includes a fixing mechanism for fixing relative to the turbine pivot, and a force-bearing mechanism fixed relative to the fixing mechanism and configured to allow for selective fixing to the lifting equipment, the lifting equipment being configured to allow the application of a force toward the force-bearing mechanism to drive the force-bearing mechanism to move, thereby causing the fixing mechanism and the turbine pivot to move together.
[0007] Furthermore, the fixing mechanism includes a fixing disc for abutting against the end face of the connecting part, and a plurality of fixing holes disposed on the fixing disc and allowing them to correspond to a plurality of threaded holes in a selective manner, wherein a spiral fastener for fixing the fixing disc and the connecting part together is selectively disposed in the fixing holes.
[0008] Furthermore, the force-bearing mechanism includes a force-bearing rod that is relatively fixed to the fixed plate and extends along the axial direction of the fixed plate for connection with the hoisting equipment. At the end of the force-bearing rod, a counterweight mechanism is selectively provided for balancing with the turbine pivot located on the fixed plate.
[0009] Furthermore, the counterweight mechanism includes a disc that can be fitted onto the force-bearing rod, and a first limiting part that is allowed to be fixedly mounted on the force-bearing rod in a relatively fixed manner to limit the radial outward movement of the disc.
[0010] Furthermore, a second limiting part extending radially outward is provided on the force-bearing rod. The second limiting part is configured to abut against the disc body to restrict the radial inward movement of the disc body.
[0011] Furthermore, the first limiting part is configured as a rod-shaped structure and can be inserted radially into the force-bearing rod, and is allowed to be fixed together with the force-bearing rod.
[0012] Furthermore, on the first limiting part, limiting holes are provided on both sides of the force-bearing rod in the radial direction, and bending parts are selectively provided in the limiting holes to limit the radial movement of the force-bearing rod.
[0013] Furthermore, an external thread is provided along the axial direction at the free end of the force-bearing rod, and the first limiting part is configured as a block structure that allows it to abut against the disc body. A threaded hole that mates with the external thread is provided on the first limiting part to restrict the axial outward movement of the disc body in a selected manner.
[0014] Furthermore, the disc body is provided with a lifting hole that extends axially through it, the lifting hole being configured to allow selective connection with lifting equipment to receive forces from the lifting device.
[0015] Furthermore, the lifting device also includes reinforcing ribs that are inclinedly arranged on the fixed plate and the force-bearing rod, and fixed to the fixed plate and the force-bearing rod respectively, to strengthen the connection between the fixed plate and the force-bearing rod.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This invention includes a fixing mechanism for fixing relative to the turbine pivot, and a force-bearing mechanism fixed relative to the fixing mechanism and configured to allow for selective fixing to a hoisting device. The hoisting device is configured to apply a force toward the force-bearing mechanism to drive its movement, thereby causing the fixing mechanism and the turbine pivot to move together. In this way, during the hoisting of the turbine pivot, the hoisting device and the force-bearing mechanism can be directly connected, thus achieving the hoisting of the turbine. This improves hoisting efficiency and reduces the complexity of the hoisting process. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0019] Figure 1 This is a schematic diagram of the overall structure of a water turbine pivot in the prior art;
[0020] Figure 2 This is a schematic diagram of the overall structure of the lifting device for the turbine pivot according to an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the overall structure of the lifting device for the turbine pivot from another perspective, according to an embodiment of the present invention.
[0022] Figure 4 This is a schematic diagram of the overall structure of the first limiting part of the lifting device for the turbine pivot in an embodiment of the present invention;
[0023] Figure 5 This is a schematic diagram of the overall structure of a second embodiment of the lifting device for a water turbine pivot according to the present invention.
[0024] In the above figures: turbine pivot 10, connecting shaft 101, connecting part 102, threaded hole 1021, lifting device 100 for turbine pivot, fixing mechanism 1, fixing plate 11, fixing hole 12, spiral fastener 121, force-bearing mechanism 2, force-bearing rod 21, second limiting part 211, counterweight mechanism 3, plate body 31, lifting hole 311, first limiting part 32, limiting hole 321, bending part 322, reinforcing rib 4. Detailed Implementation
[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0026] To better understand the purpose, structure, and function of this utility model, the following detailed description of a lifting device for a water turbine pivot, in conjunction with the accompanying drawings, is provided.
[0027] For convenience, the direction extending along the stressed rod will be referred to as "axial" or similar terminology, and the direction perpendicular to "axial" will be referred to as "radial" or similar terminology.
[0028] like Figure 1 As shown, the turbine pivot 10 typically includes a connecting shaft 101 for passing through the interior of the turbine (not shown in the figure), and a connecting portion 102 that passes through the connecting shaft 101 in a relatively fixed manner. The connecting portion 102 has several threaded holes 1021 along its axial direction. It should be noted that the structure of the turbine and the turbine pivot 10, and their connection relationship, are well known to those skilled in the art.
[0029] Figure 2 The schematic diagram illustrates the overall structure of a lifting device for a water turbine pivot according to the present invention. In such a way... Figure 2 In the embodiment shown, the lifting device 100 for the turbine pivot includes a fixing mechanism 1 for fixing relative to the turbine pivot 10, and a force-bearing mechanism 2 for fixing relative to the fixing mechanism 1.
[0030] In this embodiment, as Figure 2 As shown, the force-bearing mechanism 2 is configured to allow it to be fixed relative to the hoisting equipment (not shown) in a selective manner. It should be noted that the hoisting equipment is configured to allow a force to be applied toward the force-bearing mechanism 2 to drive the force-bearing mechanism 2 to move, thereby causing the fixing mechanism 1 and the turbine pivot 10 to move together.
[0031] In this configuration, when it is necessary to hoist the turbine pivot 10 to install it onto the turbine, or to remove it from the turbine, firstly, the fixing mechanism 1 is installed on the turbine pivot 10, and the fixing mechanism 1 is fixed relative to the turbine pivot 10. Simultaneously, the hoisting equipment is fixed relative to the force-bearing mechanism 2. This completes the arrangement of the device 100.
[0032] At this point, the hoisting equipment is activated, continuously applying force towards the force-bearing mechanism 2. During this process, the hoisting equipment continuously drives the force-bearing mechanism 2, causing it to move synchronously with the fixing mechanism 1. This, in turn, causes the fixing mechanism 1 to move synchronously with the turbine pivot 10, which is fixed to it. This achieves the hoisting of the turbine pivot 10, allowing it to move to the turbine's installation position or be hoisted down from the turbine's installation position.
[0033] In one embodiment, such as Figure 2As shown, the fixing mechanism 1 includes a fixing plate 11, which is configured to allow it to abut against the end face of the connecting part 102. The fixing mechanism 1 also includes a plurality of fixing holes 12 disposed on the fixing plate 11, which are configured to allow selective correspondence with a plurality of threaded holes 1021.
[0034] In addition, such as Figure 2 As shown, a helical fastener 121 is optionally provided in the fixing hole 12. The helical fastener 121 is configured to pass through the fixing hole 12 into the threaded hole 1021 and connect with it. In this arrangement, the fixing mechanism 1 and the turbine pivot 10 can be fixed together relative to each other by means of several helical fasteners 121.
[0035] In one embodiment, such as Figure 2 As shown, the force-bearing mechanism 2 includes a force-bearing rod 21 that is relatively fixed on the fixed plate 11 and extends axially along the fixed plate 11. The force-bearing rod 21 is configured to allow relative fixation with the hoisting equipment. A counterweight mechanism 3 is selectively provided at the end of the force-bearing rod 21. The counterweight mechanism 3 is used to balance the turbine pivot 10 located on the fixed plate 11 during the hoisting process.
[0036] Specifically, such as Figure 2 As shown, the mass of the counterweight mechanism 3 is set to be equivalent to the mass of the turbine pivot 10. In this way, when hoisting the turbine pivot 10, the hoisting equipment is positioned at the middle of the force-bearing rod 21. At this time, the turbine pivot 10 and the counterweight mechanism 3, located at opposite ends of the force-bearing rod 21, can respectively apply a downward force to the force-bearing rod 21. Therefore, the turbine pivot 10 and the counterweight mechanism 3 are positioned in a balanced manner on both sides of the force-bearing rod 21 during the hoisting process, thus enabling stable hoisting of the turbine pivot 10.
[0037] In one embodiment, such as Figure 2 As shown, the counterweight mechanism 3 includes a disc 31 that can be sleeved on the force-bearing rod 21, and a first limiting part 32 that is allowed to be relatively fixedly mounted on the force-bearing rod 21 to restrict the radial outward movement of the disc 31. In this way, the disc 31 can be stably mounted on the force-bearing rod 31, thereby achieving stable hoisting of the turbine pivot 10.
[0038] In one embodiment, such as Figure 3As shown, a second limiting part 221 extending radially outward is also provided on the force-bearing rod 21. The second limiting part 221 is configured to abut against the disc body 31 to restrict the radially inward movement of the disc body 31. In this way, the first limiting part 32 and the second limiting part 211 together form the space for mounting the disc body 31, and when the disc body 31 is placed in the space, it can be limited by the first limiting part 32 and the second limiting part 211 respectively. Thus, the disc body 31 can be more stably placed on the force-bearing rod 31, thereby further realizing the stable hoisting of the turbine pivot 10.
[0039] In one embodiment, such as Figure 4 As shown, the first limiting part 32 is configured as a rod-shaped structure and can be inserted radially into the force-bearing rod 21, allowing it to be fixed relative to the force-bearing rod 21. With this configuration, when the first limiting part 32 is inserted radially into the force-bearing rod 21, the first limiting part 32 and the disc body 31 can abut against each other. Therefore, the radial outward movement of the disc body 31 can be restricted.
[0040] According to a preferred embodiment of the present invention, such as Figure 4 As shown, limit holes 321 are provided on both sides of the force-bearing rod 21 in the radial direction on the first limiting part 32. Meanwhile, a bent part 322 is selectively provided within the limit holes 321. In this way, the bent part 322 can limit the radial movement of the force-bearing rod 21. Therefore, the first limiting part 32 can stably restrict the radial outward movement of the disc body 31. It should be noted that the bent part 322 can be configured in any way that limits the radial movement of the first limiting part 32.
[0041] In one embodiment, such as Figure 3 As shown, a lifting hole 311 extending axially is provided on the disc body 31. The lifting hole 311 is configured to allow lifting equipment to pass through and to be fixed relative to the lifting equipment to bear the force from the lifting device. In this way, the lifting equipment can limit the movement of the disc body 31, thereby preventing the disc body 31 from moving in the circumferential direction during the lifting process.
[0042] According to a preferred embodiment of the present invention, such as Figure 2 As shown, the lifting device 100 also includes reinforcing ribs 4. In this embodiment, the reinforcing ribs 4 are inclinedly arranged on the fixed plate 11 and the force-bearing rod 21, and are fixed to the fixed plate 11 and the force-bearing rod 21 respectively. In this way, the connection between the fixed plate 11 and the force-bearing rod 21 can be strengthened, thereby making the fixed plate 11 and the force-bearing rod 21 stably connected together.
[0043] Figure 5 The following diagram illustrates the specific structure of a second embodiment of the lifting device 100 for a turbine pivot according to the present invention. This embodiment differs from the first embodiment in that it employs a different first limiting portion 32. In this embodiment, an external thread is provided axially at the free end of the force-bearing rod 21, the first limiting portion 32 is configured as a block structure allowing it to abut against the disc body 31, and a threaded hole is provided on the first limiting portion 32 that mates with the external thread.
[0044] In this configuration, when it is necessary to restrict the axial outward movement of the disc 31 via the first limiting part 32, the first limiting part 32 is positioned on the force-bearing rod 21, and a circumferential force is continuously applied to the first limiting part 32, causing it to rotate along the force-bearing rod 21. During this process, the first limiting part 32 engages with the force-bearing rod 21 and continues to move toward the disc 31 until it comes into contact with the disc 31. This restricts the axial outward movement of the disc 31.
[0045] The operation of the lifting device 100 for the turbine pivot according to this utility model is as follows.
[0046] First, a fixing plate 11 is placed on the connecting part 102, and the fixing holes 12 and the threaded holes 1021 on the fixing plate 11 correspond to each other. At the same time, a spiral fastener 121 is inserted into the fixing hole 12, and the spiral fastener 121 and the threaded hole 1021 are engaged with each other.
[0047] Simultaneously, the disc 31 is inserted through the force-bearing rod 21, and the disc 31 abuts against the first limiting part 32 and the second limiting part 211 in the axial direction. Furthermore, the lifting equipment (not shown in the figure) is fixed relative to the force-bearing rod 21, and the lifting equipment passes through the lifting hole 311 and is fixed relative to the disc 31. Thus, the arrangement of the device 100 is completed.
[0048] At this time, the hoisting equipment is started, and it continuously applies force towards the load-bearing rod 21 and the disk 31. During this process, the hoisting equipment continuously drives the device 100 to move, thereby causing the device 100 to drive the turbine pivot 10 to move synchronously. Thus, the turbine pivot 10 is hoisted, and the turbine pivot 10 is moved to the turbine's installation position, or the turbine pivot 10 is hoisted down from the turbine's installation position.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A lifting device for a turbine pivot, the turbine pivot (10) comprising a connecting shaft (101) for passing through the interior of the turbine, and a connecting portion (102) passing through the connecting shaft (101) in a relatively fixed manner, wherein a plurality of threaded holes (1021) are provided on the connecting portion (102) along its axial direction. The lifting device (100) includes a fixing mechanism (1) for fixing relative to the turbine pivot (10), and a force-bearing mechanism (2) fixed relative to the fixing mechanism (1) and configured to allow for selective fixing relative to the lifting equipment, the lifting equipment being configured to allow the application of a force toward the force-bearing mechanism (2) to drive the force-bearing mechanism (2) to move, thereby causing the fixing mechanism (1) and the turbine pivot (10) to move together.
2. The lifting device for a turbine pivot according to claim 1, characterized in that, The fixing mechanism (1) includes a fixing plate (11) for abutting against the end face of the connecting part (102), and a plurality of fixing holes (12) provided on the fixing plate (11) and allowing them to correspond to a plurality of threaded holes (1021) in a selective manner. A spiral fastener (121) is provided in the fixing hole (12) in a selective manner for fixing the fixing plate (11) and the connecting part (102) together.
3. The hanger for a hydro turbine pivot according to claim 2, wherein The force-bearing mechanism (2) includes a force-bearing rod (21) that is relatively fixed on the fixed plate (11) and extends along the axial direction of the fixed plate (11) for connection with the hoisting equipment. At the end of the force-bearing rod (21), a counterweight mechanism (3) is selectively provided for forming a balance with the turbine pivot (10) located on the fixed plate (11) in a selective manner.
4. The hanger for a hydro turbine pivot according to claim 3, wherein The counterweight mechanism (3) includes a disc (31) that can be fitted onto the force rod (21), and a first limiting part (32) that is allowed to be fixedly mounted on the force rod (21) to limit the radial outward movement of the disc (31).
5. The hanger for a hydro turbine pivot according to claim 4, wherein A second limiting part (211) extending radially outward is also provided on the force-bearing rod (21). The second limiting part (221) is configured to allow it to abut against the disc body (31) to restrict the radial inward movement of the disc body (31).
6. The hanger for a hydro turbine pivot according to claim 5, wherein The first limiting part (32) is configured as a rod-shaped structure and can be inserted into the force-bearing rod (21) radially, and is allowed to be fixed together with the force-bearing rod (21).
7. The hanger for a hydro turbine pivot according to claim 6, wherein On the first limiting part (32), limiting holes (321) are provided on both sides of the force rod (21) in the radial direction. A bending part (322) is provided in the limiting hole (321) in a selective manner to limit the radial movement of the force rod (21).
8. The hanger for a hydro turbine pivot according to claim 5, wherein An external thread is provided along the axial direction at the free end of the force-bearing rod (21). The first limiting part (32) is configured as a block structure that allows it to abut against the disc body (31). A screw hole that cooperates with the external thread is provided on the first limiting part (32) to restrict the axial outward movement of the disc body (31) in a selected manner.
9. The hanger for a hydro turbine pivot according to claim 8, wherein The disc body (31) is provided with a lifting hole (311) extending along the axial direction. The lifting hole (311) is configured to allow selective connection with lifting equipment to receive forces from the lifting device.
10. The hanger for a hydro turbine pivot according to claim 3, wherein The lifting device (100) also includes reinforcing ribs (4) that are inclinedly arranged on the fixed plate (11) and the force rod (21) and are fixed to the fixed plate (11) and the force rod (21) respectively, in order to strengthen the connection between the fixed plate (11) and the force rod (21).