CN216759748U - Special tool for pulling guide vane crank arm out - Google Patents

Abstract

The utility model discloses a special tool for pulling out a guide vane crank arm, which comprises a frame body, a reinforcing part and a stress part, wherein the reinforcing part and the stress part are connected to the frame body; the frame body comprises at least two vertical stressed connecting plates and a transverse stressed connecting plate connected between the vertical stressed connecting plates; the reinforcing part comprises a reinforcing rib plate connected between the vertical stress connecting plate and the transverse stress plate, a reinforcing rib plate connected to the side edge of the vertical stress connecting plate, and a stress reinforcing plate connected between the vertical stress connecting plate and the stress part. The guide vane connecting lever arm structure can improve bearing capacity, reduce repeated welding, cutting and repairing work of the guide vane connecting lever arm, reduce safety risks, improve dismantling efficiency and guarantee maintenance period.

Description

Special tool for pulling guide vane crank arm out

Technical Field

The utility model belongs to the technical field of water conservancy and hydropower, and particularly relates to a special tool for pulling out a guide vane crank arm.

Background

The bulb through-flow type water turbine generator set is horizontally arranged, the excavation depth is relatively shallow, the water diversion pipeline is short, the height of a dam is small, the total civil engineering quantity is relatively small, and therefore civil investment is relatively low. In addition, the position of the low-water-head power plant is generally flat, is close to a city, and the equipment transportation line is flat and short in distance, so that the site construction and the equipment installation are more convenient, the related cost is reduced, and the construction period can be shortened, thereby realizing the purpose of generating electricity in advance.

Therefore, the bulb through-flow type water turbine generator set is more in production in recent years and is an important branch of hydropower, the water distributor is one of important components of the water turbine and plays a role in guiding water flow to form circulation and controlling flow, and after the generator set runs for a long time, a guide vane bearing seat of the water distributor is easy to leak water, so that the environment of electrical equipment and a gallery below is seriously influenced. And demolish the stator bearing frame and just need demolish the stator turning arm now, the turning arm is as the main atress part of control stator, generally for forging, little clearance assembly, in addition the corrosion influence, the dismantlement degree of difficulty of turning arm is very big. The special tool matched by a host manufacturer has no effect, and in order to solve the problem, a portal frame is designed, welded on a crank arm and then ejected by a jack.

However, in the prior art, the prior door frame has the following disadvantages: (1) deformation is easy to occur after stress; (2) every time a connecting lever is disassembled, a frame is welded with the connecting lever, after the frame is disassembled, the frame is cut off and the welding part of the connecting lever is repaired, a large amount of manpower and material resources are wasted, and huge safety risks caused by overhead welding operation exist. (3) The dismantling takes a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special tool for pulling out a guide vane crank arm, which has the advantages of improving bearing capacity, reducing repeated welding, cutting and repairing work of the guide vane crank arm, reducing safety risks, improving the dismounting efficiency and ensuring the maintenance period.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the special tool for pulling out the guide vane crank arm comprises a frame body, a reinforcing part and a stress part, wherein the reinforcing part and the stress part are connected to the frame body; the frame body comprises at least two vertical stressed connecting plates and a transverse stressed connecting plate connected between the vertical stressed connecting plates; the reinforcing part comprises a reinforcing rib plate connected between the vertical stress connecting plate and the transverse stress plate, a reinforcing rib plate connected to the side edge of the vertical stress connecting plate, and a stress reinforcing plate connected between the vertical stress connecting plate and the stress part.

Further, the transverse stress plate comprises two stress beams which are arranged in parallel.

Furthermore, the reinforcing rib plates are triangular plates and are respectively arranged at the connecting corners of each stress beam and the vertical stress plate.

Furthermore, the plurality of reinforcing rib plates are respectively arranged on the back of the joint of the vertical stress plate and the cross beam.

Furthermore, hoisting holes are formed in the reinforcing rib plates.

Furthermore, welding grooves are arranged at the joints of the vertical stress connecting plates and the transverse stress connecting plates.

Furthermore, the bottom of the vertical stress connecting plate is provided with a via hole connected with the crank arm stress block.

Further, the stress piece is matched with the stress block on the guide vane crank arm in size.

Compared with the prior art, the utility model has the advantages that: firstly, the utility model adopts two parallel stress beams to form the transverse stress plate, so that the stress is more uniform when the stress is applied. And all set up triangular reinforcing rib plate between atress roof beam and vertical atress board, effectively prevented atress roof beam and vertical atress board problem that the deformation is cracked when the atress for overall structure is more stable. Particularly, a reinforcing rib plate is arranged on the back of the connection between the stress beam and the vertical stress plate, so that the deformation of the vertical stress plate is avoided.

Secondly, the hoisting holes are formed in the reinforcing rib plate, so that tools can be conveniently moved, installed and used; and the special tool for the bolt is fixed with the crank arm, so that the safety in high-altitude use is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a special tool for pulling out a guide vane crank arm provided by the utility model.

Fig. 2 is a schematic top view of the special tool for pulling out the guide vane crank arm provided by the utility model.

Reference numerals: the guide vane comprises a 1-transverse stress connecting plate, a 2-reinforcing rib plate, a 3-vertical stress connecting plate, a 4-reinforcing rib plate, a 5-crank arm stress block, a 6-stress piece, a 7-stress reinforcing plate, an 8-guide vane crank arm, a 9-jack and a 10-via hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element which is referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," "third," etc. in this specification are not intended to be limiting, but rather are merely to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

As shown in fig. 1-2, a special tool for removing a guide vane crank arm comprises a frame body, a reinforcing member and a stress member 6, wherein the reinforcing member and the stress member are connected to the frame body; the frame body comprises at least two vertical stressed connecting plates 3 and a transverse stressed connecting plate 1 connected between the vertical stressed connecting plates 3; the reinforcement comprises a reinforcing rib plate 4 connected between the vertical stress connecting plate 3 and the transverse stress plate, a reinforcing rib plate 2 connected to the side edge of the vertical stress connecting plate 3, and a stress reinforcing plate 7 connected between the vertical stress connecting plate 3 and the stress member 6.

The water leakage treatment of the guide vane bearing seat of the water distributor is a key item for the maintenance of a bulb tubular unit, and the guide vane crank arm 8 needs to be pulled out firstly when the guide vane bearing seat is removed. Compared with the prior art, the door-shaped frame is mainly adopted for dismantling in the prior art, the schedule of the construction period of the door-shaped frame is mainly adopted to seriously influence the gap adjustment of the rear guide vane 7 and the schedule of the whole overhaul construction period, for example, in the repair of a No. 3 unit C of the Sichuan Canxi avionic hub, 4 guide vane bearing seats are required to be treated to leak water, the original door-shaped frame is used for welding, dismantling and repairing one guide vane bearing seat, and then dismantling one guide vane bearing seat again requires 4-5 days for the total construction period.

In the utility model, the corresponding stress block is only required to be welded on the crank arm when the guide vane crank arm is used for the first time (the guide vane crank arm 8 is not provided with the stress block), the stress block is not required to be detached, the guide vane crank arm can be repeatedly used in the later period, and the stress block is not required to be welded again when the guide vane crank arm 8 is detached for the second time. On one hand, the construction period can be greatly saved, the construction period can be greatly shortened by using the pulling tool provided by the utility model to disassemble the guide vane crank arm 8 in the same project maintenance, and the construction period can be further shortened by using the stress block on the crank arm in the secondary pulling process.

The transverse stress plate comprises two stress beams which are arranged in parallel. The two parallel stress beams enable the stress of the transverse stress connecting plate 1 to be more uniform when the transverse stress connecting plate is jacked by the jack 9.

The reinforcing rib plates 4 are set as triangular plates and are respectively arranged at the connecting corners of each stress beam and the vertical stress plate. The plurality of reinforcing rib plates 2 are respectively arranged on the back of the joint of the vertical stress plate and the cross beam. The reinforcing rib plate 4 and the reinforcing rib plate 2 can effectively enhance the integral stress performance and avoid deformation and breakage.

Hoisting holes are arranged on the reinforcing rib plates 2. The lifting hole can facilitate the installation, the disassembly and the transportation of the whole tool, and the safety and the convenience are effectively improved.

And welding grooves are arranged at the joints of the vertical stressed connecting plate 3 and the transverse stressed connecting plate 1.

The bottom of the vertical stress connecting plate 3 is provided with a via hole 10 connected with the crank arm stress block 5. The size of the stress piece 6 is matched with that of a stress block on the guide vane crank arm 8. A hole with the diameter of 30 is formed in the vertical stress connecting plate 3, and the special tool and the crank arm can be firmly fixed through bolts by matching with the stress block M24 threads on the crank arm, so that the safety in high-altitude use is improved.

In practical use, the special pulling tool provided by the utility model is directly transported to the site through the hoisting hole, so that the operation, installation and fixation of workers are facilitated, and the assembly can be completed only by matching the stress block welded to the guide vane crank arm 8 in advance with the stress piece 6 on the vertical stress connecting plate 3, penetrating the phi 30 through hole 10 on the vertical stress connecting plate 3 by using an M24 bolt, connecting the stress block on the crank arm and fastening the stress block. Finally, the jack 9 is utilized to apply pressure to the transverse stress plate, so that the pulling-out work can be completed, the whole operation is simple, the working efficiency can be greatly improved, and the maintenance period is shortened.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (8)

1. The utility model provides a specialized tool is pulled out to stator turning arm which characterized in that: comprises a frame body, a reinforcing part and a stress part (6) which are connected on the frame body; the frame body comprises at least two vertical stressed connecting plates (3) and a transverse stressed connecting plate (1) connected between the vertical stressed connecting plates (3); the reinforcing part comprises a reinforcing rib plate (4) connected between the vertical stress connecting plate (3) and the transverse stress plate, a reinforcing rib plate (2) connected to the side edge of the vertical stress connecting plate (3), and a stress reinforcing plate (7) connected between the vertical stress connecting plate (3) and the stress part (6).

2. The special tool for pulling out guide vane crank arm as claimed in claim 1, wherein: the transverse stress plate comprises two stress beams which are arranged in parallel.

3. The special tool for pulling out guide vane crank arm as claimed in claim 1, wherein: the reinforcing rib plates (4) are set triangles and are respectively arranged at the connecting corners of each stress beam and the vertical stress plate.

4. The special tool for pulling out guide vane crank arm as claimed in claim 1, wherein: the reinforcing rib plates (2) are multiple and are respectively arranged on the back of the joint of the vertical stress plate and the cross beam.

5. The special tool for pulling out guide vane crank arm as claimed in claim 4, wherein: and hoisting holes are formed in the reinforcing rib plates (2).

6. The special tool for pulling out guide vane crank arm as claimed in claim 1, wherein: and welding grooves are arranged at the joints of the vertical stress connecting plates (3) and the transverse stress connecting plates (1).

7. The special tool for pulling out guide vane crank arm as claimed in claim 6, wherein: and a via hole (10) connected with the crank arm stress block (5) is formed in the bottom of the vertical stress connecting plate (3).

8. The special tool for pulling out guide vane crank arm as claimed in claim 1, wherein: the stress piece (6) is matched with the stress block on the guide vane crank arm (8) in size.

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