A device for extracting shear pins of hydro-turbine generator sets in power stations

Abstract

The utility model relates to the technical field of shear pins for water turbines, and discloses a device for extracting shear pins for water turbine generator sets in power stations; the device comprises a first steel plate and a second steel plate, and further comprises: an extracting assembly arranged at the bottom of the first steel plate for extracting a broken piece from a pin hole, the extracting assembly comprising a connecting block, the connecting block being arranged at the bottom of the first steel plate, the inner wall screw of the connecting block being connected with a tightening bolt, a limiting block being arranged at the bottom of the tightening bolt, the utility model can facilitate the extraction of the broken piece from the pin hole by arranging the extracting assembly and the ejecting assembly, and lifts a heavy object within a small stroke by the top first steel plate or the second steel plate, thereby overcoming the friction between the broken piece and the pin hole, and extracting or ejecting the broken piece from the pin hole, thus utilizing the larger and more uniform output force of the jack to replace the impact force of the sledgehammer and steel chisel, which not only saves physical strength but is also safe and time-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine shear pins, in particular to a device for extracting shear pins of a hydro-turbine generator set in a power station. Background Art

[0002] The shear pin is located in the pin holes of the turbine guide vane connecting plate and the crank arm. The turbine shear pin is an important device to protect the safe operation of the water guide mechanism. When closing the turbine water guide mechanism, foreign objects such as wood may be stuck between the two guide vanes, making the water guide mechanism unable to be closed. In order to ensure that all guide vanes except the two guide vanes with foreign objects stuck can be closed and the transmission mechanism is not damaged, an easily destructible shear pin device is provided on the guide vane arm. As a special pin, it not only has the positioning and connecting function of the pin, but also can be connected to the signal device as a detection component. In the field of turbine technology, the shear pin connects the connecting plate and the guide vane arm of the guide vane transmission mechanism. When the guide vane is moving, the shear pin has sufficient strength to drive the guide vane to rotate.

[0003] The existing shear pin extraction device for hydro-turbine generator sets in power stations has problems such as insufficient shear stress of the shear pin or jamming between the movable guide vanes. The shear pin is often sheared. After the shear pin is sheared, some broken parts cannot be removed from the pin hole due to the small clearance between the shear pin and the pin hole, rust on the shear pin, etc. The conventional treatment method is to disassemble the crank arm and use an octagonal sledgehammer and a hexagonal steel chisel to use the impact force to force the broken parts to slide out of the pin hole. This increases the time for replacing the shear pin and affects the output of all workers in the station. Utility Model Content

[0004] The utility model aims to provide a device for extracting shear pins of a hydro-generator set in a power station, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for extracting the shear pin of a hydro-turbine generator set in a power station, comprising a first steel plate and a second steel plate, and also comprising: a pulling assembly arranged at the bottom of the first steel plate for pulling out the broken piece from the pin hole, the pulling assembly comprising a connecting block, the connecting block being arranged at the bottom of the first steel plate, the inner wall screw of the connecting block being connected with a tightening bolt, and a limiting block being arranged at the bottom of the tightening bolt; an ejection assembly arranged at the bottom of the second steel plate for pulling out the broken piece from the pin hole, the ejection assembly comprising an adjusting clamping plate, the adjusting clamping plate being arranged at the bottom of the second steel plate, the bottom of the second steel plate being provided with a bottom steel plate, and the top of the bottom steel plate being fixedly connected with the limiting plate.

[0006] Preferably, the inner wall of the first steel plate is threadedly connected to a first threaded rod, and the inner wall of the first threaded rod is threadedly connected to a second threaded rod.

[0007] Preferably, a fixing plate for connecting an extraction instrument is fixedly connected to the bottom of the first steel plate.

[0008] Preferably, a hydraulic jack is fixedly connected to one side of the fixing plate, and a first fixing screw is provided on one side of the hydraulic jack.

[0009] Preferably, a bottom plate for limiting the breaking piece is fixedly connected to the bottom of the limiting block.

[0010] Preferably, a first rack jack for removing broken parts is fixedly connected to the bottom of the first steel plate.

[0011] Preferably, the outer side of the second steel plate is threadedly connected to a third threaded rod, and the bottom of the second steel plate is fixedly connected to a second rack jack.

[0012] Preferably, the outer side of the third threaded rod is threadedly connected with a second fixing screw for adjusting and limiting the position of the adjusting clamp.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can facilitate the extraction of the broken part from the pin hole by arranging the extraction component and the ejection component, and the first steel plate or the second steel plate on the top can lift the heavy object within a small stroke, thereby overcoming the friction between the broken part and the pin hole, and extracting or ejecting the broken part from the pin hole. In this way, the larger and more uniform output force of the jack is utilized to replace the impact force of the sledgehammer and the steel chisel, which not only saves physical strength but is also safe and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a device for extracting shear pins of a hydro-generator set in a power station provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of the extraction assembly provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the ejector assembly provided by the utility model;

[0018] Figure 4 This is a schematic structural diagram of the first threaded rod and the second threaded rod provided by the utility model.

[0019] In the figure: 1. first steel plate; 2. second steel plate; 3. removal assembly; 31. connection block; 32. tightening bolt; 33. limit block; 4. ejection assembly; 41. adjustment clamp; 42. bottom steel plate; 43. limit plate; 5. first threaded rod; 6. second threaded rod; 7. fixing plate; 8. hydraulic jack; 9. first fixing screw; 10. bottom plate; 11. first rack jack; 12. third threaded rod; 13. second rack jack; 14. second fixing screw. 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] See also Figure 1-4 As shown, a device for extracting shear pins of a hydro-turbine generator set in a power station comprises a first steel plate 1 and a second steel plate 2, and further comprises: an extraction assembly 3 arranged at the bottom of the first steel plate 1 for extracting broken parts from pin holes, the extraction assembly 3 comprising a connecting block 31, the connecting block 31 being arranged at the bottom of the first steel plate 1, the inner wall screws of the connecting block 31 being connected with tightening bolts 32, and a limiting block 33 being arranged at the bottom of the tightening bolts 32; an ejection assembly 4 arranged at the bottom of the second steel plate 2 for extracting broken parts from pin holes, the ejection assembly 4 comprising an adjusting clamping plate 41, the adjusting clamping plate 41 being arranged at the bottom of the second steel plate 2, the bottom of the second steel plate 2 being provided with a bottom steel plate 42, and the top of the bottom steel plate 42 being fixedly connected with a limiting plate 43.

[0022] It should be noted that: by setting the first steel plate 1, it is convenient to adjust the first threaded rod 5, by setting the second steel plate 2, it is convenient to adjust the third threaded rod 12, by setting the connecting block 31, it is convenient to connect the tightening bolt 32, by setting the tightening bolt 32, it is convenient to connect the pin hole, by setting the limit block 33, it is convenient to limit the fracture, by setting the adjusting clamp 41, it is convenient to limit the fracture, by setting the bottom steel plate 42, it is convenient to fix the limit plate 43, and by setting the limit plate 43, it is convenient to limit the shear pin.

[0023] refer to Figure 2As shown, the inner wall of the first steel plate 1 is threadedly connected with a first threaded rod 5, and the inner wall of the first threaded rod 5 is threadedly connected with a second threaded rod 6; the bottom of the first steel plate 1 is fixedly connected with a fixing plate 7 for connecting a removal instrument; one side of the fixing plate 7 is fixedly connected with a hydraulic jack 8, and one side of the hydraulic jack 8 is provided with a first fixing screw 9; the bottom of the limiting block 33 is fixedly connected with a bottom plate 10 for limiting the broken part; by providing the first threaded rod 5, it is convenient to connect the connecting block 31, by providing the second threaded rod 6, it is convenient to connect the connecting block 31, by providing the fixing plate 7, it is convenient to connect the hydraulic jack 8, by providing the hydraulic jack 8, it is convenient to move the tightening bolt 32, by providing the first fixing screw 9, it is convenient to limit the first threaded rod 5, and by providing the bottom plate 10, it is convenient to limit the shear pin.

[0024] refer to Figure 3 As shown, the bottom of the first steel plate 1 is fixedly connected with a first rack jack 11 for removing the broken part; the outer side of the second steel plate 2 is threadedly connected with a third threaded rod 12, and the bottom of the second steel plate 2 is fixedly connected with a second rack jack 13; the outer side of the third threaded rod 12 is threadedly connected with a second fixing screw 14 for adjusting and limiting the adjusting clamp 41; by setting the first rack jack 11, it is convenient to move the tightening bolt 32. It is explained here that the extension rate of the two jacks is the same. By setting the third threaded rod 12, it is convenient to adjust the adjusting clamp 41, and by setting the second rack jack 13, it is convenient to eject the broken part, and by setting the second fixing screw 14, it is convenient to limit the third threaded rod 12.

[0025] Working principle: When in use, the broken part of the shear pin can be pulled out or ejected by the pulling component 3 and the ejecting component 4. When the pulling component 3 is needed, the shear pin is placed on the limit block 33, and the tightening bolt 32 is screwed into the inside of the shear pin. At this time, the hydraulic jack 8 and the first rack jack 11 are turned on to pull out the broken part. When the ejecting component 4 is needed, the shear pin is placed on the inner wall of the limit plate 43, and the second rack jack 13 is operated to eject the broken part.

[0026] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0027] Although the 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 device for extracting shear pins of a hydro-turbine generator set in a power station, comprising a first steel plate (1) and a second steel plate (2), characterized in that: Also includes: A removal assembly (3) is arranged at the bottom of the first steel plate (1) for removing the broken part from the pin hole, the removal assembly (3) comprising a connecting block (31), the connecting block (31) is arranged at the bottom of the first steel plate (1), the inner wall of the connecting block (31) is screwed with a tightening bolt (32), and a limiting block (33) is arranged at the bottom of the tightening bolt (32); An ejection assembly (4) is arranged at the bottom of the second steel plate (2) for removing the broken part from the pin hole, the ejection assembly (4) comprising an adjustment clamping plate (41), the adjustment clamping plate (41) is arranged at the bottom of the second steel plate (2), a bottom steel plate (42) is arranged at the bottom of the second steel plate (2), and the top of the bottom steel plate (42) is fixedly connected to a limiting plate (43).

2. The device for extracting shear pins of a hydro-generator set in a power station according to claim 1, characterized in that: The inner wall of the first steel plate (1) is threadedly connected to a first threaded rod (5), and the inner wall of the first threaded rod (5) is threadedly connected to a second threaded rod (6).

3. The device for extracting shear pins of a hydro-generator set in a power station according to claim 1, characterized in that: A fixing plate (7) for connecting an extraction instrument is fixedly connected to the bottom of the first steel plate (1).

4. The device for extracting shear pins of a hydro-generator set in a power station according to claim 3, characterized in that: A hydraulic jack (8) is fixedly connected to one side of the fixing plate (7), and a first fixing screw (9) is provided on one side of the hydraulic jack (8).

5. The device for extracting shear pins of a hydro-generator set in a power station according to claim 1, characterized in that: The bottom of the limiting block (33) is fixedly connected to a bottom plate (10) for limiting the breaking piece.

6. The device for extracting shear pins of a hydro-generator set in a power station according to claim 1, characterized in that: A first rack jack (11) for removing broken parts is fixedly connected to the bottom of the first steel plate (1).

7. The device for extracting shear pins of a hydro-generator set in a power station according to claim 1, characterized in that: The outer side of the second steel plate (2) is threadedly connected to a third threaded rod (12), and the bottom of the second steel plate (2) is fixedly connected to a second rack jack (13).

8. The device for extracting shear pins of a hydro-generator set in a power station according to claim 7, characterized in that: The outer side of the third threaded rod (12) is threadedly connected to a second fixing screw (14) for adjusting and limiting the position of the adjusting clamping plate (41).

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