CN219259368U - Turning tool for main shaft of large axial flow propeller turbine - Google Patents

Abstract

The utility model relates to a turning tool for a main shaft of a large-scale axial-flow rotary paddle water turbine, which includes a main shaft, and a first flange and a second flange are respectively fixed on both sides of the main shaft, and the first flange is used for connecting the main shaft with a motor. The second flange is used for the connection between the main shaft and the runner. The side of the first flange is detachably connected with a main shaft hoisting tool, and the side of the second flange is detachably connected with a turning tool. The utility model adopts the turning tool The setting can effectively fix the position of the main shaft during the turning process, solve the swing problem during the turning process of the main shaft, and greatly enhance the safety during the turning process, and the main shaft is always in the suspended state during the turning process of the main shaft, and will not Cause damage to the spindle itself, so that the spindle can complete the turning action safely and stably, effectively protect the flange surface of the spindle from damage to the flange surface, and also protect the safety of other equipment and people. It has the characteristics of safety, reliability and rapidity. .

Description

Tool for turning over the main shaft of a large axial flow propeller turbine

technical field

The utility model relates to the technical field of large-scale axial flow paddle water turbines, in particular to a turning tool for the main shaft of large axial flow paddle water turbines.

Background technique

The main shaft of a large axial-flow paddle turbine is the main device for transmitting torque. It transmits the rotational force of the turbine runner to the generator through the main shaft. The main shaft of the Datangxia Hydro Turbine is 6205mm long, weighs 90t, and has a maximum diameter of 2630mm. There are two main shafts The flange surface is connected to the runner on one side and the generator shaft on the other. After the main shaft arrives at the installation room of the unit, it is generally placed in a horizontal mode. During installation, the main shaft needs to be in a vertical state. The existing way of turning over is to connect the lifting tool provided by the manufacturer with the connecting surface of the generator shaft, use a bridge machine and slowly lift the main shaft until the main shaft is in a vertical state, but during the turning over process of the main shaft, the bottom of the main shaft is round There will be front and rear swinging and left and right rolling phenomena. Due to the limited space in the installation room, other equipment may be damaged during the front and rear swinging and left and right rolling of the main shaft. When the axis is installed, it poses a fatal threat to the safe operation of the equipment in the later stage.

Utility model content

For this reason, the utility model provides a turning tool for the main shaft of a large-scale axial-flow propeller water turbine, which is used to overcome the existing technology of using a bridge machine and slowly lifting the main shaft until the main shaft is in a vertical state, but the main shaft is in the process of turning over. If the bottom is round, there will be swinging back and forth and rolling left and right. Due to the limited space in the installation space, other equipment may be damaged and the flange surface at the lower end of the spindle may be damaged during the swinging back and forth of the spindle and the flange surface at the lower end of the spindle, resulting in scratches and deformation of the flange surface. Seriously affect the axis when the large shaft is installed, and pose a fatal threat to the safe operation of the later equipment.

In order to achieve the above purpose, the utility model provides a turning tool for the main shaft of a large axial flow propeller turbine, including a main shaft, and a first flange and a second flange are respectively fixed on both sides of the main shaft, and the first flange is used for connecting the main shaft and the main shaft. The motor is connected, the second flange is used for the connection between the main shaft and the runner, the main shaft lifting tool is detachably connected to the side of the first flange, and the turning tool is detachably connected to the side of the second flange. The stand-up tool includes a positioning mechanism, a hoisting mechanism and a strengthening mechanism. The positioning mechanism is provided with a hoisting mechanism, and the hoisting mechanism is connected with the positioning mechanism to be fixedly connected with a strengthening mechanism. The positioning mechanism can make the turning tool and the side of the second flange Locating connections.

Further, the positioning mechanism includes a fan-shaped base, and screw holes are respectively fixed on both sides of the fan-shaped base close to the edge, and bolts are screwed on the screw holes, the size of the two screw holes and the distance between the two screw holes It is the same as the size of the screw holes on the second flange and the distance between adjacent screw holes on the second flange.

Further, the hoisting mechanism includes a hoisting ring, a conical base and two auxiliary hoisting holes, the hoisting ring is fixedly installed on the conical base in the Y-axis direction, and the hoisting ring is arranged between two screw holes, the conical The base is fixed on the fan-shaped base, and auxiliary hanging holes are respectively provided on both sides of the conical base, and the two auxiliary hanging holes are fixedly connected with the fan-shaped base through connecting rods.

Further, the reinforcing mechanism includes reinforcing ribs fixed in the X-axis direction of the fan-shaped base, and the reinforcing ribs are fixedly connected to the conical base, and the reinforcing ribs include main vertical ribs and two auxiliary vertical ribs, and the two auxiliary vertical ribs are respectively Set on both sides of the main vertical reinforcement.

Further, the spindle lifting tool adopts a disc lifting lug lifting device, a clamp lifting device and a ring lifting device.

Compared with the prior art, the utility model has the beneficial effects: through the setting of the turning tool, the position of the main shaft can be effectively fixed during the turning process, which solves the problem of swaying in the turning process of the main shaft, and greatly enhances the stability of turning over. Safety, while the main shaft is always suspended during the turning process of the main shaft, it will not cause damage to the main shaft itself, so that the main shaft can complete the turning action safely and stably, effectively protect the flange surface of the main shaft from damage to the flange surface, and can also protect the The safety of other equipment and people has the characteristics of safety, reliability and speed.

Description of drawings

Fig. 1 is the working structure schematic diagram described in the utility model;

Fig. 2 is a structural schematic diagram of the turning tool described in the present invention.

In the figure: main shaft 1, first flange 2, second flange 3, main shaft lifting tool 4, turning tool 5, fan-shaped base 6, lifting ring 7, conical base 8, auxiliary lifting hole 9, main vertical rib 10, auxiliary Rib 11.

Detailed ways

In order to make the purpose and advantages of the utility model clearer, the utility model will be further described below in conjunction with the embodiments; it should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the utility model, and are not intended to limit the protection scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "up", "down", "left", "right", "inside" and "outside" indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. The positional relationship is only for convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

In addition, it should be noted that in the description of the present utility model, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Please refer to Fig. 1 and Fig. 2, which are structural schematic diagrams described in the utility model. The utility model discloses a turning tool for the main shaft of a large-scale axial flow paddle water turbine, including a main shaft 1, and first flanges 2 are respectively fixed on both sides of the main shaft 1. and the second flange 3, the first flange 2 is used to connect the main shaft 1 to the motor, the second flange 3 is used to connect the main shaft 1 to the runner, and the side of the first flange 2 is detachably connected with a main shaft lifting tool 4, A turning tool 5 is detachably connected to the side of the second flange 3. The turning tool 5 can effectively fix the position of the main shaft 1 during the turning process, effectively protect the flange surface of the main shaft 1 from damage to the flange surface, and protect other parts. equipment and personnel safety.

Specifically, by using the connection between the turning tool 5 and the second flange 3 and the connection between the main shaft lifting tool 4 and the first flange 2, the position of the main shaft 1 can be effectively fixed during the turning over process, preventing the main shaft 1 from being The swaying problem that occurs during the turning process can effectively protect the flange surface of the main shaft 1 from damage to the flange surface, and can also protect the safety of other equipment and people.

In actual use, during the turnover process of the main shaft 1, two bridge machines should be used at the same time. The No. 1 bridge machine is used to control the vertical direction of the main shaft 1, and the No. 2 bridge machine controls the horizontal swing of the main shaft 1. The turning tool 5 is installed on the second flange 3 The side of the main shaft hoisting tool 4 is installed on the side of the first flange 2, the main shaft hoisting tool 4 adopts the prior art (auxiliary tool provided by the manufacturer), and the main shaft hoisting tool 4 can adopt a disc lifting lug sling, a clamp sling and ring spreaders;

The hook of the No. 1 bridge crane is connected to the side of the first flange 2 through the main shaft lifting tool 4, and the hook turning tool 5 of the No. 2 bridge crane is connected to the side of the second flange 3. When the main shaft 1 turns over, the No. 1 bridge crane Lift and lift the No. 2 bridge machine slowly, and gradually raise the main shaft 1 until it is separated from the supporting tool of the main shaft 1. After the main shaft 1 is separated from the supporting tool, the No. 1 bridge machine slowly rises, and the No. 1 is gradually pulled up to the vertical state, and the part connecting the main shaft 1 and the No. 2 bridge machine will swing forward due to inertia. The front power prevents the main shaft 1 from swinging during turning over.

The turning tool 5 comprises a positioning mechanism, a hoisting mechanism and a reinforcing mechanism. The positioning mechanism is provided with a hoisting mechanism, and the hoisting mechanism is connected with the positioning mechanism and is fixedly connected with a reinforcing mechanism. The positioning mechanism can make the positioning of the turning tool 5 and the second flange 3 sides Connected, the hoisting mechanism can assist the main shaft lifting tool 4 to leave the ground completely during the turning over of the main shaft 1, without causing damage to the main shaft 1 body, and the strengthening mechanism can increase the load-bearing capacity of the turning tool 5.

Specifically, the positioning mechanism can be used for the turning tool 5 to be installed on the side of the second flange 3 for positioning and fixing; the hoisting mechanism can be convenient for the suspension hook of the bridge crane to hang; the strengthening mechanism can increase the load-bearing capacity of the turning tool 5 , to improve the stability of turning tool 5.

Please refer to Fig. 2, the positioning mechanism includes a fan-shaped base 6, and the two sides of the fan-shaped base 6 are respectively fixed with screw holes near the edge, and the screw holes are screwed with bolts, the size of the two screw holes and the size of the two screw holes The distance between them is the same as the size of the screw holes on the second flange 3 and the distance between adjacent screw holes on the second flange 3 .

Specifically, using the shape characteristics of the fan-shaped base 6 can facilitate the connection between the fan-shaped base 6 and the side of the second flange 3, and at the same time directly use the screw holes of the second flange 3, and fix the two sides of the fan-shaped base 6 near the edges respectively. Screw holes are provided, and bolts can be used to complete the positioning and fixing of the fan-shaped base 6 and the side of the second flange 3 .

Please refer to Figure 2, the lifting mechanism includes a lifting ring 7, a conical base 8 and two auxiliary lifting holes 9, the lifting ring 7 is fixedly installed on the conical base 8 in the Y-axis direction, and the lifting ring 7 is arranged between the two screw holes In between, the conical base 8 is fixed on the fan-shaped base 6, and the two sides of the conical base 8 are respectively provided with auxiliary lifting holes 9, and the two auxiliary lifting holes 9 are fixedly connected with the fan-shaped base 6 through connecting rods.

Specifically, the use of the conical base 8 can make the position of the suspension ring 7 be at a more powerful point of force, to ensure the uniformity of the force on the main shaft 1 when the hook of the bridge crane is hung up, and at the same time cooperate with two auxiliary Hanging hole 9, can form three-point positioning with suspension ring 7 like this, carry out force suspension, further improve the uniformity of main shaft 1 force.

Please refer to Fig. 2, the reinforcing mechanism includes reinforcing ribs fixed in the X-axis direction on the fan-shaped base 6, and the reinforcing ribs are fixedly connected with the conical base 8, and the reinforcing ribs include main vertical ribs 10 and two auxiliary vertical ribs 11, two Two auxiliary vertical ribs 11 are respectively arranged on the main vertical ribs 10 both sides.

Specifically, the arrangement of reinforcing ribs can realize the stability of the connection between the conical base 8 and the fan-shaped base 6, and the reinforcing ribs include the main vertical rib 10 and two auxiliary vertical ribs 11, and the two auxiliary vertical ribs 11 They are respectively arranged on both sides of the main vertical rib 10, which can realize the effect of dispersing the force, prevent damage to the connection between the conical base 8 and the fan-shaped base 6, and improve the safety of the entire device.

So far, the technical solution of the utility model has been described in conjunction with the preferred implementations shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific implementations. On the premise of not departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the utility model.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model; for those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a large-scale axial flow propeller turbine main shaft instrument of standing up, includes the main shaft, main shaft both sides are fixed with first flange and second flange respectively, first flange is used for the main shaft to be connected with the motor, the second flange is used for the main shaft to be connected with the runner, can dismantle on the first flange side and be connected with main shaft lifting means, a serial communication port, can dismantle on the second flange side and be connected with the instrument of standing up, the instrument of standing up includes positioning mechanism, lifting mechanism and strengthening mechanism, be equipped with lifting mechanism on the positioning mechanism, and lifting mechanism is connected with fixedly connected with strengthening mechanism with positioning mechanism, positioning mechanism can make the instrument of standing up be connected with the location of second flange side.

2. The turning tool for the main shaft of the large-scale axial-flow propeller turbine according to claim 1, wherein the positioning mechanism comprises a fan-shaped base, screw holes are respectively and fixedly arranged at two sides of the fan-shaped base close to the edges, bolts are screwed on the screw holes, and the size of the two screw holes and the distance between the two screw holes are the same as those of the screw holes on the second flange and the distance between the adjacent screw holes on the second flange.

3. The large-scale axial flow turbine main shaft turning tool according to claim 2, wherein the hoisting mechanism comprises a hoisting ring, a conical base and two auxiliary hoisting holes, the hoisting ring is fixedly installed on the conical base in the Y-axis direction, the hoisting ring is arranged between the two screw holes, the conical base is fixed on the fan-shaped base, the two sides of the conical base are respectively provided with the auxiliary hoisting holes, and the two auxiliary hoisting holes are fixedly connected with the fan-shaped base through a connecting rod.

4. The tool for turning over a main shaft of a large-scale axial flow propeller turbine according to claim 3, wherein the reinforcing mechanism comprises a reinforcing rib fixed in the X-axis direction of the fan-shaped base, and the reinforcing rib is fixedly connected with the cone-shaped base, and comprises a main stud and two auxiliary studs, and the two auxiliary studs are respectively arranged on two sides of the main stud.

5. The large-scale francis turbine main shaft turning tool according to any one of claims 1 to 4, wherein the main shaft lifting tool adopts a disk lifting lug lifting tool, a clamp lifting tool and a ring lifting tool.

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