Auxiliary dismounting device for shear pin of water turbine

Abstract

The utility model relates to the technical field of water turbine shear pins, and discloses a water turbine shear pin auxiliary dismounting device which is characterized in that a long bolt, a middle partition plate and an arc-shaped clamping plate are sequentially arranged in a top plate, a worm is rotationally arranged in the middle of the middle partition plate, a rotating shaft is fixedly arranged at the top of the worm, and the top of the rotating shaft penetrates through the middle position of the top plate; the bottom of the inner wall of the top plate is slidably connected with the bottom of an arc-shaped clamping plate, and the diameter of the arc-shaped clamping plate is larger than that of a clamping groove fixedly formed in the bottom of the top plate. According to the auxiliary dismounting device for the shear pin of the water turbine, by arranging the top plate, the long bolts, the clamping grooves and other parts, the top plate is clamped into a spigot in the upper portion of the shear pin, the shear pin can be jacked up and pulled out by symmetrically rotating the two long bolts, the overhauling efficiency and safety are improved, the risk in work is reduced, and the personal safety of a user is protected; and therefore, the cost is reduced, the energy is saved, the environment is protected, and tools such as jacks are not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine shear pins, in particular to an auxiliary disassembly device for turbine shear pins. Background Art

[0002] Shear pin is a key pin that can be sheared when a certain torque is exceeded in mechanical transmission. The shear pin of the turbine is a cylindrical pin that is easy to shear off and is installed on the guide vane arm. Shear pin, also called breaking pin, is a key pin that can be sheared when a certain torque is exceeded in mechanical transmission. It is the most commonly used safety device for water guide mechanism. A dangerous section is machined on the shear pin. Under normal operating force, the shear pin can work normally. When the normal operating force exceeds 1.5 times, the shear pin and the signal device installed in it break at the dangerous section and send a signal, which plays a role in protecting other guide vanes.

[0003] To prevent the shear pin from protruding, the shear pin is assembled tightly with the guide vane arm and the crank arm. When the shear pin needs to be disassembled (for inspection, replacement or flaw detection), the operation is complicated and takes a long time, which affects the quality and accuracy of the work and causes a certain degree of danger. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a device for auxiliary disassembly of shear pins of a turbine. The device has the advantages of being safe and simple, improving work efficiency and safety, simplifying the work process, shortening the operation time, and being conducive to improving the quality and precision of work, reducing risks in work, protecting the personal safety of users, and preventing the occurrence of construction. The device is simple to operate and easy to use, and does not require complex training skills to master. The device is sturdy and durable, can withstand long-term use and harsh working environment, reduces the frequency of maintenance and replacement, thereby reducing costs, saving energy and being environmentally friendly, does not require tools such as jacks, has little impact on the environment, has wide adaptability, and can be applied to a variety of shear pins, etc., solving the problem that when the shear pin needs to be disassembled (for inspection, replacement or flaw detection), the operation is complicated and the operation time is long, resulting in the quality and precision of the work being affected and reduced, and there is a certain degree of danger.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turbine shear pin auxiliary disassembly device, wherein long bolts, a middle partition and an arc-shaped clamping plate are sequentially arranged inside a top plate, a worm is rotatably arranged in the middle of the middle partition, a rotating shaft is fixedly arranged on the top of the worm, the top of the rotating shaft passes through the middle position of the top plate, the bottom of the inner wall of the top plate is slidably connected to the bottom of the arc-shaped clamping plate, and the diameter of the arc-shaped clamping plate is larger than the diameter of the clamping groove fixedly arranged at the bottom of the top plate.

[0006] The worm is provided with a fan-shaped worm wheel through the thread transmission of the edge, an inclined rod is fixedly provided at the end of the fan-shaped worm wheel away from the worm, a cross rod is slidably inserted at the end of the inclined rod away from the fan-shaped worm wheel, the cross rod is fixedly provided in the square groove at the top of the vertical plate, a second triangular slider is fixedly provided on one side of the bottom of the vertical plate, a first triangular slider is slidably provided on the inclined surface of one side of the second triangular slider, and an arc-shaped clamping plate is fixedly provided on the right-angle plate of the first triangular slider away from the second triangular slider through a connecting rod.

[0007] Preferably, a "U"-shaped notch structure is provided at one end of the inclined rod away from the fan-shaped worm gear, and the inner wall of the "U"-shaped notch is slidably connected to the cross bar at the bottom of the vertical plate.

[0008] Preferably, two identical sealing sleeves are fixedly provided at both ends of the top of the top plate, the sealing sleeves are sleeved on the outside of the long bolts, and the top of the long bolts is fixedly provided with internal hexagons.

[0009] Preferably, a sleeve is fixedly provided at the bottom of the outer side of the vertical plate, the middle part of the sleeve is slidably sleeved on the outer circumferential surface of the middle part of the vertical rod, and the bottom of the vertical rod is fixedly provided on the bottom of the inner wall of the top plate.

[0010] Preferably, a support plate is arranged at the center of the circle in the middle of the sector worm gear through a horizontal axis rotation, the bottom of the support plate is fixedly arranged in the middle of the upper surface of the middle partition, and two identical power grooves are fixedly arranged at both ends of the middle position of the middle partition, and the width of the power groove is greater than the width of the inclined rod.

[0011] Preferably, a round steel handle is fixedly provided on the upper surface of the top plate.

[0012] Compared with the prior art, the utility model provides a turbine shear pin auxiliary disassembly device, which has the following beneficial effects:

[0013] 1. The turbine shear pin auxiliary disassembly device, by setting components such as a top plate, long bolts and a slot, achieves the effect of the top plate being inserted into the stopper on the upper part of the shear pin, and the shear pin can be lifted and pulled out by symmetrically rotating two long bolts, thereby improving maintenance efficiency and safety, reducing risks at work, protecting the personal safety of users, preventing the occurrence of danger, thereby reducing costs, saving energy and protecting the environment, and not requiring tools such as jacks.

[0014] 2. The turbine shear pin auxiliary disassembly device is safe and simple, which improves work efficiency and safety. The use of this tool simplifies the work process and shortens the operation time, which is beneficial to improving the quality and accuracy of the work. It is easy to operate and easy to get started, and does not require complex training to master skills. The tool is sturdy and durable, can withstand long-term use and harsh working environment, reduces the frequency of maintenance and replacement, has little impact on the environment, and has wide adaptability. The tool can be applied to a variety of shear pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the top plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0018] Figure 4 It is a top view of the structure of the utility model.

[0019] In the figure: 1. top plate; 2. sealing sleeve; 3. long bolt; 4. inclined rod; 5. fan-shaped worm gear; 6. rotating shaft; 7. worm; 8. middle partition; 9. slot; 10. arc-shaped clip plate; 11. first triangular slider; 12. second triangular slider; 13. vertical plate; 14. vertical rod; 15. power slot; 16. support plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0022] The embodiment of the present application discloses an auxiliary disassembly device for shear pins of a turbine, comprising a long bolt 3, a middle partition plate 8 and an arc-shaped clamping plate 10 arranged in sequence inside a top plate 1, two identical sealing sleeves 2 are fixedly arranged at both ends of the top of the top plate 1, the sealing sleeve 2 is sleeved on the outside of the long bolt 3, and an inner hexagon is fixedly arranged on the top of the long bolt 3. The sealing sleeve 2 ensures that the long bolt 3 can be threaded vertically and at the same time limits the long bolt 3 to avoid reversal after movement. A round steel handle is fixedly arranged on the upper surface of the top plate 1, and the round steel handle is convenient for lifting the top plate 1, moving the top plate 1 and removing the shear pin at the bottom.

[0023] A worm 7 is rotatably arranged in the middle of the middle partition 8, and a rotating shaft 6 is fixedly arranged on the top of the worm 7. The top of the rotating shaft 6 passes through the middle position of the top plate 1. The bottom of the inner wall of the top plate 1 is slidably connected to the bottom of the arc-shaped clamping plate 10. The diameter of the arc-shaped clamping plate 10 is larger than the diameter of the clamping groove 9 fixedly arranged at the bottom of the top plate 1.

[0024] The worm 7 is provided with a fan-shaped worm wheel 5 through the threaded transmission at the edge, and a support plate 16 is provided at the center of the middle part of the fan-shaped worm wheel 5 through the horizontal axis rotation. The bottom of the support plate 16 is fixedly provided in the middle part of the upper surface of the middle partition 8, and two identical power grooves 15 are fixedly provided at both ends of the middle position of the middle partition 8. The width of the power groove 15 is greater than the width of the inclined rod 4. The support plate 16 provides a fulcrum for the fan-shaped worm wheel 5 to ensure that the fan-shaped worm wheel 5 can rotate smoothly under the force.

[0025] An inclined rod 4 is fixedly provided at one end of the sector worm gear 5 away from the worm 7, and a "U"-shaped groove structure is provided at one end of the inclined rod 4 away from the sector worm gear 5. The inner wall of the "U"-shaped groove is slidably connected to the cross bar at the bottom of the vertical plate 13. The setting of the "U"-shaped groove prevents the inclined rod 4 from making an arc motion and avoids a movement conflict with the upward moving vertical plate 13.

[0026] A cross bar is slidably inserted at one end of the inclined rod 4 away from the fan-shaped worm gear 5, and the cross bar is fixedly arranged inside the square groove at the top of the vertical plate 13. A sleeve is fixedly arranged at the bottom of the outer side of the vertical plate 13, and the middle part of the sleeve is slidably sleeved on the outer circumferential surface of the middle part of the vertical rod 14. The bottom of the vertical rod 14 is fixedly arranged at the bottom of the inner wall of the top plate 1. The sleeve between the vertical plate 13 and the vertical rod 14 ensures that the vertical plate 13 can move vertically after being subjected to force to prevent tilting.

[0027] A second triangular slider 12 is fixedly provided on one side of the bottom of the vertical plate 13, a slide rail is fixedly provided on the inclined surface of the second triangular slider 12, and an inward slide groove is fixedly provided on the inclined surface of the first triangular slider 11. The slide rail and the slide groove have the same specifications. Through the setting of the slide rail and the slide groove, it is ensured that when the second triangular slider 12 moves upward, it can drive the first triangular slider 11 to move smoothly left and right.

[0028] The first triangular slider 11 is slidably disposed on the inclined surface of one side of the second triangular slider 12 , and the first triangular slider 11 is fixedly disposed with an arc-shaped clamping plate 10 at a right angle plate away from the second triangular slider 12 via a connecting rod.

[0029] The working principle of the auxiliary disassembly device of the shear pin of a turbine in the embodiment of the present application is as follows: when in use, it is mainly composed of a top plate 1 and two long bolts 3 (M16×250), the lower part of the top plate 1 is processed with a slot 9, and the upper part is welded with a round steel handle, and M16 screw holes are symmetrically drilled on the top plate 1. When the shear pin needs to be disassembled, the top plate 1 is inserted into the stop on the upper part of the shear pin, and the two long bolts 3 are symmetrically rotated to lift and pull out the shear pin, thereby improving the maintenance efficiency and safety. At this time, the round steel handle is lifted to remove the top plate 1 and the shear pin at the same time. When the slot 9 at the bottom of the top plate 1 is stuck in the stop of the shear pin, if the straight line of the shear pin The diameter is smaller than the diameter of the card slot 9, so as to avoid the shear pin from shaking when lifting. The rotating shaft 6 drives the worm 7 at the bottom to rotate at the same time under the action of external force. The worm 7 makes one end of the inclined rod 4 swing upward through the fan-shaped worm gear 5. When the inclined rod 4 swings, it drives the vertical plate 13 and the second triangular slider 12 on one side to move upward. When the second triangular slider 12 moves, it prompts the first triangular slider 11 to move toward the center of the card slot 9 through the slide rail of the inclined surface on one side. The two arc-shaped clamping plates 10 on both sides contact the side of the shear pin to realize the clamping of the shear pin, so as to avoid the shear pin from shaking when it is pulled up, so as to achieve the safety of the shear pin when it is disassembled.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic turbine shear pin auxiliary disassembly device, characterized in that: The invention comprises a long bolt (3), a middle partition (8) and an arc-shaped clamping plate (10) which are sequentially arranged inside a top plate (1); a worm (7) is rotatably arranged in the middle of the middle partition (8); a rotating shaft (6) is fixedly arranged on the top of the worm (7); the top of the rotating shaft (6) passes through the middle position of the top plate (1); the bottom of the inner wall of the top plate (1) is slidably connected to the bottom of the arc-shaped clamping plate (10); and the diameter of the arc-shaped clamping plate (10) is larger than the diameter of a clamping groove (9) fixedly arranged on the bottom of the top plate (1); The worm (7) is provided with a fan-shaped worm wheel (5) through a threaded transmission at the edge; an inclined rod (4) is fixedly provided at one end of the fan-shaped worm wheel (5) away from the worm (7); a cross rod is slidably inserted at one end of the inclined rod (4) away from the fan-shaped worm wheel (5); the cross rod is fixedly provided inside a square groove at the top of a vertical plate (13); a second triangular slider (12) is fixedly provided at one side of the bottom of the vertical plate (13); a first triangular slider (11) is slidably provided on an inclined surface of one side of the second triangular slider (12); and an arc-shaped clamping plate (10) is fixedly provided at a right angle plate of the first triangular slider (11) away from the second triangular slider (12) through a connecting rod.

2. A turbine shear pin auxiliary disassembly device according to claim 1, characterized in that: A "U"-shaped notch structure is provided at one end of the inclined rod (4) away from the fan-shaped worm gear (5), and the inner wall of the "U"-shaped notch is slidably connected to the crossbar at the bottom of the vertical plate (13).

3. A turbine shear pin auxiliary disassembly device according to claim 1, characterized in that: Two identical sealing sleeves (2) are fixedly provided at both ends of the top of the top plate (1), the sealing sleeves (2) are sleeved on the outside of the long bolts (3), and the top of the long bolts (3) is fixedly provided with internal hexagons.

4. A water turbine shear pin auxiliary disassembly device according to claim 1, characterized in that: A sleeve is fixedly arranged at the bottom of the outer side of the vertical plate (13), the middle part of the sleeve is slidably sleeved on the outer circumferential surface of the middle part of the vertical rod (14), and the bottom of the vertical rod (14) is fixedly arranged on the bottom of the inner wall of the top plate (1).

5. The water turbine shear pin auxiliary disassembly device according to claim 1, characterized in that: A support plate (16) is arranged at the center of the circle in the middle of the sector worm wheel (5) so as to rotate via a horizontal axis. The bottom of the support plate (16) is fixedly arranged at the middle of the upper surface of the middle partition (8). Two identical power grooves (15) are fixedly arranged at both ends of the middle position of the middle partition (8). The width of the power groove (15) is greater than the width of the inclined rod (4).

6. A turbine shear pin auxiliary disassembly device according to claim 1, characterized in that: A round steel handle is fixedly provided on the upper surface of the top plate (1).

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