Device for preventing pivot from rotating and preventing blade pivot and rotating arm connecting pin from rotating and falling off

Abstract

The utility model discloses a device for preventing a pivot from rotating and preventing a blade pivot and a rotating arm connecting pin from rotating and falling, which belongs to the field of detecting, disassembling and reassembling a runner of an axial flow propeller moving cylinder type water turbine and comprises a runner body, runner mechanisms are mounted on four sides of the middle of the runner body, and mounting grooves matched with the runner mechanisms are formed in the runner body. Locking mechanisms are mounted on the left and right sides of the front end of the outer surface of the rotating wheel mechanism; the rotating wheel mechanism comprises a blade pivot, a plurality of sets of rotating wheel blade bolt holes are evenly formed in the middle of the blade pivot, and the blade pivot and a rotating arm connecting pin are conveniently limited and locked in the rotating wheel turning-over process through a sleeve and prevented from falling off in the using process. And one end of the blade pivot and rotating arm connecting pin can be sleeved and fixed conveniently, the other end of the blade pivot and rotating arm connecting pin is fixed in the blade sealing pressing plate groove through a bolt, and the blade pivot and the blade sealing pressing plate groove can be locked while the device is locked conveniently.

Description

Technical Field

[0001] The utility model relates to the field of inspection, disassembly and reassembly of an axial-flow propeller cylinder type water turbine runner, in particular to a device for preventing a pivot from rotating and a connecting pin between a blade pivot and a rotating arm from rotating and falling off. Background Art

[0002] During unit overhaul, the runner of an axial-flow impeller turbine needs to be turned over for inspection and disassembly to remove the arm and blade pivot. The blade pivot and arm are connected through two blade pivot and arm connecting pins. Because there is a certain gap between the blade pivot and arm connecting pins and the blade pivot and arm connecting pin holes, when the runner is flipped 180 degrees vertically and placed on a dedicated pier with the discharge cone facing upward, there is a risk of the pivot rotating and the blade pivot and arm connecting pin falling off due to gravity. The traditional device to prevent the blade pivot and arm connecting pin from falling off is to screw an M46 lifting ring into the center screw hole of the pivot flange surface, and screw an M10 lifting ring into each of the two pin end screw holes on the pivot flange surface. The three lifting rings are then wrapped together with No. 12 wire and tightened to prevent the pin from falling off.

[0003] However, during use, the traditional device for preventing the blade pivot and the rotating arm connecting pin from falling off has the risk of the chain and the iron wire being broken, the blade pivot and the rotating arm connecting pin falling off, and the pivot rotating. Therefore, it is necessary to provide a new pivot anti-rotation and blade pivot and rotating arm connecting pin anti-rotation and falling off device to solve the above technical problems. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide a device for preventing the pivot from rotating and the pin connecting the blade pivot and the rotating arm from rotating and falling off, which can solve the problem that the traditional device for preventing the pin connecting the blade pivot and the rotating arm from falling off has the risk of the chain and the wire being broken, the pin connecting the blade pivot and the rotating arm falling off, and the pivot rotating during use. In order to solve the above technical problems, the present invention provides a device for preventing the pivot from rotating and the pin connecting the blade pivot and the rotating arm from rotating and falling off, which adopts the following technical solution: the device for preventing the pivot from rotating and the pin connecting the blade pivot and the rotating arm from rotating and falling off, including:

[0005] A rotating wheel body, wherein the rotating wheel mechanism is installed on the four sides of the middle of the rotating wheel body, and the rotating wheel body is provided with a mounting groove adapted for the rotating wheel mechanism, and the outer surface of the rotating wheel mechanism is provided with a locking mechanism on the left and right sides of the front end;

[0006] The wheel mechanism includes a blade pivot, and a plurality of wheel blade bolt holes are evenly arranged in the middle of the blade pivot. The wheel blade bolt holes on the left and right sides are provided with connecting pins of the blade pivot and the rotating arm.

[0007] By adopting the above technical solution, the blade pivot is provided to facilitate the rotation of the blade around the axis under the impetus of the water flow, thereby adjusting the direction of the blade relative to the water flow to maximize the utilization of the energy of the water flow. The pin is provided to facilitate positioning and transfer of torque, thereby improving operational stability when the water flow begins to push the blade. The locking mechanism is provided to facilitate the pin to be locked in position during the turning process of the runner to prevent it from falling off during use, and the blade pivot and the blade sealing plate groove can be locked to prevent rotation during the turning process.

[0008] Optionally, a large copper bushing of the pivot is fixedly connected to the outer surface of the blade pivot.

[0009] By adopting the above technical solution, a large pivot copper bush is provided to provide a fulcrum and a limit, so that the runner blades can freely adjust the angle under the action of the hydraulic oil of the speed regulator, thereby adjusting the turbine output.

[0010] Optionally, a blade sealing pressure plate groove is provided on the outer surface of the blade pivot, and the blade sealing pressure plate groove is located on the outside of the large copper bushing of the pivot, and multiple groups of blade sealing pressure plate bolt holes are evenly provided on the blade sealing pressure plate groove.

[0011] By adopting the above technical solution, a blade sealing pressure plate groove is provided, a set of seals is installed in the groove, and the pressure plate presses the seal to provide a sealing interface, which prevents water from entering the impeller body from the outside and prevents the turbine oil from leaking out from the impeller from the inside. Multiple groups of threaded holes are evenly opened on the blade sealing pressure plate groove, so that the locking mechanism can be fixedly installed on this device for use.

[0012] Optionally, the locking mechanism includes a sleeve that is sleeved on the connecting pin of the blade pivot and the rotating arm, a fan-shaped plate is welded to the upper end of the sleeve, and a pad is fixedly connected to the bottom of the two groups of fan-shaped plates on the side away from each other.

[0013] By adopting the above technical solution, a sleeve is provided to facilitate the limit locking of the blade pivot and the swing arm connecting pin during the turning process of the rotor to prevent it from falling off during use. By providing a fan-shaped plate and a pad, a fan-shaped device is processed using the stability principle of a triangle. One end is fixed on the blade pivot and the swing arm connecting pin, and the other end is fixed in the blade sealing pressure plate groove with a bolt. This makes it easy to lock the device while locking the blade pivot and the blade sealing pressure plate groove to prevent rotation during the turning process of the rotor, thereby improving the stability of the device during the turning process of the rotor.

[0014] Optionally, the sleeve, sector plate and backing plate are made of stainless steel.

[0015] By adopting the above technical solution, the sleeve, sector plate and pad are made of stainless steel, which ensures that the sleeve, sector plate and pad can withstand greater pressure and load.

[0016] Optionally, a plurality of locking device mounting holes are evenly arranged in the middle of the pad.

[0017] By adopting the above technical solution, multiple groups of locking device installation holes are evenly opened in the middle of the pad, which are convenient for docking with the blade sealing pressure plate bolt holes, so that the locking mechanism is fixedly installed on the wheel mechanism for use.

[0018] In summary, the present invention has at least one of the following beneficial effects:

[0019] 1. The present application is provided with a locking mechanism, which facilitates the limit locking of the blade pivot and the rotating arm connecting pin through the sleeve during the turning process of the rotor to prevent it from falling off during use. By providing a fan-shaped plate and a pad, a fan-shaped device is processed using the stability principle of a triangle. One end is fixed on the blade pivot and the rotating arm connecting pin, and the other end is fixed in the blade sealing pressure plate groove with a bolt, which is convenient for locking the device while locking the blade pivot and the blade sealing pressure plate groove to prevent rotation during the turning process of the rotor, thereby improving the stability of the device during the turning process of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the use status of the utility model Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the use status of the utility model Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the disassembled structure of the components of the utility model;

[0024] Figure 4 This is a schematic diagram of the locking mechanism structure of the utility model.

[0025] Explanation of the reference numerals: 100, rotor body; 200, rotor mechanism; 201, blade pivot; 202, large copper bushing of the pivot; 203, blade sealing pressure plate groove; 204, rotor blade bolt hole; 205, blade pivot and swing arm connecting pin; 206, blade sealing pressure plate bolt hole; 300, locking mechanism; 301, sleeve; 302, fan-shaped plate; 303, pad; 304, locking device mounting hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-4 The utility model is described in further detail.

[0027] Example 1, reference Figure 1 、 Figure 2 and Figure 3 The utility model discloses a device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off, which can solve the problems of the traditional device for preventing the connecting pin of the blade pivot and the rotating arm from falling off during use, such as the chain and the iron wire being broken, the connecting pin of the blade pivot and the rotating arm falling off, and the hidden dangers of the pivot rotating. The device includes:

[0028] The wheel body 100 has a wheel mechanism 200 mounted on the four central sides of the wheel body 100. The wheel body 100 has mounting grooves adapted for the wheel mechanism 200. Locking mechanisms 300 are mounted on the left and right sides of the front end of the outer surface of the wheel mechanism 200.

[0029] The wheel mechanism 200 includes a blade pivot 201 , a plurality of wheel blade bolt holes 204 are evenly arranged in the middle of the blade pivot 201 , and blade pivot and arm connecting pins 205 are inserted into the wheel blade bolt holes 204 on the left and right sides.

[0030] Working principle: The impeller body 100 is convenient for installing the impeller mechanism 200, and the blade pivot 201 is convenient for the blade to rotate around the axis under the push of the water flow, thereby adjusting the direction of the blade relative to the water flow to maximize the use of the energy of the water flow. The impeller blade bolt hole 204 is convenient for the installation and use of the blade pivot and the rotating arm connecting pin 205. The blade pivot and the rotating arm connecting pin 205 are convenient for positioning and transferring torque, so that when the water flow starts to push the blade, the operating stability is improved. The locking mechanism 300 is convenient for limiting and locking the blade pivot and the rotating arm connecting pin 205 during the impeller turning process to prevent it from falling off during use, and can lock the blade pivot 201 and the blade sealing pressure plate groove 203 to prevent it from rotating during the impeller turning process.

[0031] Example 2, reference Figure 3 and Figure 4In this embodiment, the problem of the traditional device for preventing the blade pivot and the arm connecting pin from falling off, the risk of the chain and the iron wire being broken, the blade pivot and the arm connecting pin falling off and the pivot rotating during use is solved. The pivot anti-rotation and the blade pivot and the arm connecting pin anti-rotation and falling off device also includes: the outer surface of the blade pivot 201 is fixedly connected to the pivot large copper washer 202, the outer surface of the blade pivot 201 is provided with a blade sealing pressure plate groove 203, and the blade sealing pressure plate groove 203 is located on the pivot large copper washer On the outside of 202, a plurality of blade sealing pressure plate bolt holes 206 are evenly provided on the blade sealing pressure plate groove 203, and the locking mechanism 300 includes a sleeve 301 which is sleeved on the blade pivot and the swing arm connecting pin 205, and a fan-shaped plate 302 is welded to the upper end of the sleeve 301, and a pad 303 is fixedly connected to the bottom of the side away from each other of the two groups of fan-shaped plates 302. The sleeve 301, the fan-shaped plate 302 and the pad 303 are made of stainless steel, and a plurality of locking device mounting holes 304 are evenly provided in the middle of the pad 303.

[0032] Working principle: When the wheel needs to turn over, the sleeve 301 is sleeved on the blade pivot and the swing arm connecting pin 205, which is convenient for limiting and locking the blade pivot and the swing arm connecting pin 205 during the turning process of the wheel to prevent it from falling off during use. After the pad 303 on the fan plate 302 is docked with the blade sealing pressure plate bolt hole 206 on the blade sealing pressure plate groove 203, it is locked by fixing the bolt, which is convenient for locking the device. At the same time, it can lock the blade pivot 201 and the blade sealing pressure plate groove 203 to prevent it from rotating during the turning process of the wheel, thereby improving the stability of the device during the turning process of the wheel, and avoiding the traditional anti-blade pivot 201 and swing arm connecting pin 205 falling off device. During use, there are hidden dangers of the chain being broken and the iron wire being broken, the blade pivot 201 and the swing arm connecting pin 205 falling off, and the pivot rotation.

[0033] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. The device for preventing the pivot from rotating and the connecting pin between the blade pivot and the rotating arm from rotating and falling off is characterized by: include, A rotating wheel body (100), wherein rotating wheel mechanisms (200) are installed on the four middle surfaces of the rotating wheel body (100), and the rotating wheel body (100) is provided with mounting grooves adapted to the rotating wheel mechanisms (200), and locking mechanisms (300) are installed on the left and right sides of the front end of the outer surface of the rotating wheel mechanism (200); The wheel mechanism (200) comprises a blade pivot (201), a plurality of groups of wheel blade bolt holes (204) are evenly arranged in the middle of the blade pivot (201), and blade pivot and rotating arm connecting pins (205) are inserted into the wheel blade bolt holes (204) on the left and right sides.

2. The device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off according to claim 1, characterized in that: A large copper bushing (202) is fixedly connected to the outer surface of the blade pivot (201).

3. The device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off according to claim 2, characterized in that: The outer surface of the blade pivot (201) is provided with a blade sealing pressure plate groove (203), and the blade sealing pressure plate groove (203) is located outside the pivot large copper bushing (202), and the blade sealing pressure plate groove (203) is evenly provided with multiple groups of blade sealing pressure plate bolt holes (206).

4. The device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off according to claim 1, characterized in that: The locking mechanism (300) comprises a sleeve (301) sleeved on the blade pivot and the rotating arm connecting pin (205), a fan-shaped plate (302) is welded to the upper end of the sleeve (301), and a pad (303) is fixedly connected to the bottom of the two groups of fan-shaped plates (302) on the side away from each other.

5. The device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off according to claim 4, characterized in that: The sleeve (301), the sector plate (302) and the backing plate (303) are made of stainless steel.

6. The device for preventing the pivot from rotating and the connecting pin of the blade pivot and the rotating arm from rotating and falling off according to claim 4, characterized in that: A plurality of locking device mounting holes (304) are evenly arranged in the middle of the backing plate (303).

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