CN113878541A - Pulling device and pulling method for shear pin of water turbine - Google Patents
Pulling device and pulling method for shear pin of water turbine Download PDFInfo
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- CN113878541A CN113878541A CN202111332167.4A CN202111332167A CN113878541A CN 113878541 A CN113878541 A CN 113878541A CN 202111332167 A CN202111332167 A CN 202111332167A CN 113878541 A CN113878541 A CN 113878541A
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- pulling
- shear pin
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 9
- 238000010008 shearing Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The invention discloses a pulling device for a shear pin of a water turbine, which comprises: a fixing device; the external thread of the pulling piece is matched with the fixing device, the pulling piece is tubular, and a placing hole transversely penetrates through one end of the pulling piece; the pressure spring is positioned in the tubular pulling piece, one end of the pressure spring is abutted against the pulling piece, and the other end of the pressure spring is abutted against the limiting block; the stress block is used for limiting the shearing pin, and the shape and the size of the stress block are matched with the placing hole so as to extend into the placing hole; the stress block is provided with a limiting groove, and the appearance and the size of the limiting groove are matched with the limiting block, so that the limiting block falls into the limiting groove to realize limiting. The invention designs a special device for pulling out the shear pin, and particularly relates to a device which utilizes a stress block as an intermediate piece to connect the shear pin and utilizes the rotation of a thread structure to convert the stress block into integral linear movement, thereby pulling out the shear pin more conveniently, more stably and more safely.
Description
Technical Field
The invention relates to the field of water turbine application, in particular to a pulling device and a pulling method for a shear pin of a water turbine.
Background
In summer flood season, the sand content of river sediment is increased steeply, the mixed-flow type water turbine generator set is easy to break some shearing pins of the water guide mechanism, and the efficiency is the lowest when the broken shearing pins are removed when the mixed-flow type water turbine generator set is replaced emergently.
The reason is that connecting parts such as connecting rods or double links need to be removed, and then tools such as shovels and hammers are used for violently removing the connecting parts, so that time and labor are wasted during the process, and certain potential safety hazards are caused.
Therefore, it is necessary to develop a special technique for pulling out the shear pin of the water turbine to achieve the purpose of safety and convenience.
Disclosure of Invention
Based on the situation, the invention aims to provide a water turbine shear pin pulling device to solve the problems that the existing shear pin removing efficiency is low, time and labor are wasted, and the existing shear pin removing device is unsafe.
The invention is realized by the following technical scheme:
a hydraulic turbine shear pin extraction device comprising:
a fixing device;
the external thread of the pulling piece is matched with the fixing device, the pulling piece is tubular, and a placing hole transversely penetrates through one end of the pulling piece;
a rod; the rod axially penetrates through the tubular extracting piece, a limiting block is arranged at one end of the rod, and the peripheral shape and size of the limiting block are matched with the inner wall of the tubular extracting piece, so that the limiting block enters or exits from the inner part of the extracting piece;
the pressure spring is positioned in the tubular extracting piece, one end of the pressure spring is abutted against the extracting piece, and the other end of the pressure spring is abutted against the limiting block;
the stress block is used for limiting the shearing pin, and the shape and the size of the stress block are matched with the placing hole so that the stress block extends into the placing hole; the stress block is provided with a limiting groove, and the appearance and the size of the limiting groove are matched with the limiting block, so that the limiting block falls into the limiting groove to realize limiting.
In some embodiments, the fixing device includes a fixing plate and a leg provided to the fixing plate, and the outer portion of the extractor is screw-fitted to the fixing plate.
In some embodiments, the legs are rod-like structures and at least two of the legs are parallel to a centerline of the extractor.
In some embodiments, the legs are threadably engaged with the retaining plate.
In some embodiments, the drawer is generally straight cylindrical.
In some embodiments, the number of the legs is four, the four legs are arranged in a rectangle, and the extraction member is located at the center of the rectangle.
In some embodiments, a handle is disposed on the other end of the rod opposite to the stopper.
A method for pulling a shear pin of a water turbine adopts the pulling device and comprises the following steps:
s1, inserting the pulling piece into the hole of the shearing pin in a penetrating way;
s2, placing the fixing device stably and fixing;
s3, driving the rod to move upwards, so that the limiting block enters the pulling piece, and the placing hole is ensured to be smooth;
s4, inserting the stress block into the placing hole and ensuring that the limiting groove is aligned with the limiting block;
s5, inserting the limiting block into the limiting groove under the action of the elastic force of the pressure spring;
s6, rotating the pulling piece, wherein the pulling piece and the fixing device rotate through threaded fit to realize that the pulling piece moves axially upwards, the upper end of the stress block props against the lower end of the shearing pin, and then the pulling piece drives the stress block to move upwards and further drives the shearing pin to be pulled out.
In some embodiments, the step S2 includes the following sub-steps:
s201, forming the fixing device by adopting a fixing plate and supporting legs, enabling the supporting legs to be in threaded fit with the fixing plate, enabling the extracting piece to be in threaded fit with the fixing plate, and ensuring that the supporting legs and the extracting piece are parallel to each other along the precession direction during the rotation of the threads;
s202, placing the fixing device at a target position;
s203, the support legs are rotatably adjusted by utilizing the threaded fit of the support legs and the fixing plate, so that the free ends of the support legs tightly abut against a target position, and the stable placement of the whole fixing device is further ensured.
In some embodiments, in the step S3, an external force drives the rod to move upward by grasping a handle provided on the rod;
in the step S5, the external force is released or cancelled, so that the lever is inserted into the limit groove by the elastic force of the pressure spring.
The invention has the following advantages and beneficial effects:
the invention designs a special device for pulling out the shear pin, and particularly relates to a device which utilizes a stress block as an intermediate piece to connect the shear pin and utilizes the rotation of a thread structure to convert the stress block into integral linear movement, thereby pulling out the shear pin more conveniently, more stably and more safely.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required 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 that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
fig. 1 is a schematic structural view of a hydraulic turbine shear pin pulling device according to an embodiment of the hydraulic turbine shear pin pulling device of the present invention.
Fig. 2 is a schematic view of a structure of arranging rods on a fixing plate according to an embodiment of the device for pulling out a shear pin of a water turbine of the present invention.
FIGS. 3A-3B are schematic diagrams of the setting structure of the pulling element and the structure of the matched stress block.
Fig. 4 is a schematic structural view of the force-receiving block pre-entering the placing hole in one embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the force-bearing block entering the placing hole in one embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
the device comprises a fixing device-100, a fixing plate-110, a supporting foot-120, a pulling piece-200, a placing hole-210, a rod-300, a handle-310, a limiting block-400, a pressure spring-500, a stress block-600, a limiting groove-610 and a shearing pin-700.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Referring to fig. 1-5, a device for pulling a shear pin of a water turbine includes a fixing device 100, a pulling member 200, a rod 300, a limiting block 400, a pressure spring 500, and a force-receiving block 600.
The fixture 100 is used to hold the entire assembly in place so that there is a stable stressed position during subsequent operations.
The extracting element 200, the extracting element 200 is a workpiece for directly realizing extracting operation. The external thread of the pulling member 200 is engaged with the fixing device 100, so that the rotation of the pulling member 200 in the case of the thread is converted into the linear movement of the whole pulling member 200 by using the thread structure, which is more labor-saving and stable. The extractor 200 is tubular for setting the rod 300. One end of the pulling member 200 is transversely provided with a placing hole 210 through which the force-receiving block 600 is arranged, so that the force-receiving block 600 and the pulling member 200 are stably connected.
The lever 300 is used to drive the stopper 400 to be coupled to or decoupled from the force receiving block 600.
The rod 300 axially penetrates through the tubular extraction member 200, and one end of the rod 300 is provided with a stop block 400, and the outer peripheral shape and size of the stop block 400 are adapted to the inner wall of the tubular extraction member 200, so that the stop block 400 enters or exits from the interior of the extraction member 200.
The lever 300 drives the limiting block 400 to enter the pulling piece 200, so as to achieve the storage effect, thereby preventing the limiting block 400 from interfering the placing hole 210 with the stress block 600.
The compression spring 500 functions to provide a restoring elastic force to the stopper 400. The pressure spring 500 is located inside the tubular pulling member 200, and one end of the pressure spring 500 abuts against the pulling member 200, and the other end abuts against the limiting block 400.
When an external force is applied to the lever 300, the stopper 400 is drawn into the drawer 200, and when the external force is removed, the stopper is pushed out by the elastic force due to the action of the compression spring 500.
And the stress block 600 is used for limiting the shearing pin. Generally, the shear pin itself is tubular. Therefore, the force-bearing block 600 can be directly inserted into the shear pin to realize connection.
The force receiving block 600 is shaped and sized to fit into the placement hole 210 such that it extends into the placement hole 210.
The force-bearing block 600 is provided with a limiting groove 610, and the shape and size of the limiting groove 610 are adapted to the limiting block 400, so that the limiting block 400 falls into the limiting groove 610 to realize limiting.
When the limiting block 400 falls into the limiting groove 610, the connection between the pulling part 200 and the force-bearing block 600 is realized.
In some embodiments, the fixing device 100 includes a fixing plate 110 and legs 120 provided to the fixing plate 110, and the outer portion of the extractor 200 is screw-fitted to the fixing plate 110.
In the preferred embodiment, a specific configuration is provided for the fixing device 100. I.e., the legs 120 are provided to the fixing plate 110. Meanwhile, the legs 120 are connected to the fixing plate 110 by a screw structure, so that the length of the legs 120 is adjusted by screw adjustment to adapt to different height states of the installation surface.
In some embodiments, the legs 120 are rod-shaped structures, and at least two of the legs 120 are parallel to the centerline of the extractor 200, such as L in FIG. 11And L2As shown.
In some embodiments, the legs 120 are threadably engaged with the mounting plate 110.
In some embodiments, the number of the legs 120 is four, and the four legs 120 are arranged in a rectangle, and the extractor 200 is located at the center of the rectangle. The structural form is convenient for bearing force uniformly.
In some embodiments, the extractor 200 is generally straight cylindrical for ease of use.
In some embodiments, a handle 310 is disposed at the other end of the rod 300 opposite to the stopper 400, and the handle 310 is disposed to facilitate the application of the external force.
The pulling device is adopted, and the concrete implementation comprises the following steps.
S1, the extractor 200 is inserted into the hole of the shear pin 700.
The puller 200 is the primary means of pulling the shear pin 700, and the puller 200 is inserted into the shear pin 700 to facilitate subsequent operations.
S2, placing the fixing device 100 stably and fixing.
The fixture 100 is used to position the puller 200. The self-standing device can provide force application and force bearing conditions for the subsequent pulling operation by placing stably.
S3, driving the rod 300 to move upwards, so that the limiting block 400 enters the inside of the pulling element 200 and the placing hole 210 is ensured to be unobstructed.
The stopper 400 is displaced downward to the limit position by the spring 500. Meanwhile, the limiting block 400 is connected to the rod 300, the rod 300 is pulled upwards, and then the limiting block 400 is driven upwards, so that the limiting block 400 is moved in the placing hole 210, and the subsequent stress block 600 can conveniently enter the placing hole 210.
S4, inserting the force-bearing block 600 into the placement hole 210 and ensuring the limiting groove 610 to align with the limiting block 400.
The force-receiving block 600 enters the placement opening 210 and engages the drawer 200. The limiting groove 610 is aligned to the limiting block 400, so that the limiting block 400 can conveniently enter the limiting groove 610 to realize stable connection.
S5, the limiting block 400 is inserted into the limiting groove 610 by the lever 300 under the elastic force of the pressure spring 500.
When the limiting block 400 is inserted into the limiting groove 610, the limiting block 400 is limited transversely, so that the limiting block 400 is prevented from falling off when the shearing pin 700 is pulled out subsequently.
S6, rotating the pulling part 200, wherein the pulling part 200 and the fixing device 100 rotate under threaded fit, so that the pulling part 200 axially moves upwards, the upper end of the stress block 600 abuts against the lower end of the shear pin 700, and the pulling part 200 drives the stress block 600 to move upwards and further drives the shear pin to be pulled out.
In this step, the rotational fit between the pulling member 200 and the fixing device 100 is converted into an upward precession of the pulling member 200, which is a labor-saving mechanism and a mechanism for changing the direction of force. The pulling member 200 moves upward together with the force block 600, and the force block 600 abuts against the lower end of the shear pin 700 as shown in fig. 5. This action therefore moves the shear pin 700 upward, i.e., the shear pin 700 is pulled out by this upward movement.
Further, in some embodiments, the step S2 includes the sub-steps as described below.
S201, forming the fixing device 100 by adopting the fixing plate 110 and the supporting feet 120, and enabling the supporting feet 120 to be in threaded fit with the fixing plate 110, enabling the extracting piece 200 to be in threaded fit with the fixing plate 110, and ensuring that the supporting feet 120 and the extracting piece 200 are parallel to each other along the precession direction during threaded rotation.
The threaded fit between the legs 120 and the fixing plate 110 is used in this step, so that the force points of the legs 120 can be adapted to different height positions in specific applications. As shown in fig. 1, the precession direction of the pulling element 200 is parallel to the precession direction of the leg 120, so that when the shear pin 700 is pulled out, the generated force is applied to the outside through the fixing plate 110 and the leg 120, so that the fixing position of the outside is formed as a force bearing point.
S202, placing the fixing device 100 at a target position.
S203, using the thread fit between the supporting leg 120 and the fixing plate 110 to rotatably adjust the supporting leg 120, so that the free end of the supporting leg 120 tightly abuts against the target position, thereby ensuring that the whole fixing device 100 is stably placed.
The free end of the supporting leg 120 is stably and tightly abutted against the target position, so that the stability of the bearing point is ensured.
Further, in some embodiments, in the step S3, an external force drives the lever 300 to move upward by grasping the handle 310 provided on the lever 300; in the step S5, the external force is released or cancelled, so that the lever 300 is inserted into the limiting groove 610 by the elastic force of the compressed spring 500.
The limiting block 400 is adjusted by the operating lever 300 to realize stable connection of the limiting block 400 and the force-receiving block 600.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a hydraulic turbine shear pin pulling device which characterized in that includes:
a fixture (100);
the external thread of the extracting piece (200) is matched with the fixing device (100), the extracting piece (200) is tubular, and a placing hole (210) transversely penetrates through one end of the extracting piece (200);
a rod (300); the rod (300) axially penetrates through the tubular extraction piece (200), a limiting block (400) is arranged at one end of the rod (300), and the peripheral shape and size of the limiting block (400) are matched with the inner wall of the tubular extraction piece (200), so that the limiting block (400) enters or exits from the interior of the extraction piece (200);
the pressure spring (500) is positioned inside the tubular extracting piece (200), one end of the pressure spring (500) is abutted against the extracting piece (200), and the other end of the pressure spring is abutted against the limiting block (400);
the stress block (600) is used for limiting the shearing pin, and the shape and the size of the stress block (600) are matched with the placing hole (210) so as to enable the stress block to extend into the placing hole (210); the stress block (600) is provided with a limiting groove (610), and the appearance and the size of the limiting groove (610) are matched with the limiting block (400), so that the limiting block (400) falls into the limiting groove (610) to realize limiting.
2. The turbine shear pin puller according to claim 1, wherein the retainer (100) comprises a retaining plate (110) and a leg (120) provided to the retaining plate (110), and the outer thread of the puller (200) is fitted to the retaining plate (110).
3. The turbine shear pin extraction device of claim 1, wherein the legs (120) are rod-like structures and at least two of the legs (120) are parallel to the centerline of the extraction member (200).
4. The turbine shear pin extraction apparatus of claim 3, wherein the support leg (120) is threadedly engaged with the retaining plate (110).
5. The hydraulic turbine shear pin extraction device of any one of claims 1-4, wherein the extraction member (200) is generally in the shape of a straight cylinder.
6. The turbine shear pin extraction device of claim 5, wherein the number of the support legs (120) is four, four of the support legs (120) are arranged in a rectangle, and the extraction member (200) is located at the center of the rectangle.
7. The hydraulic turbine shear pin pulling device according to claim 1, wherein a handle (310) is provided at the other end of the rod (300) opposite to the stopper (400).
8. A method for pulling out a shear pin of a water turbine, characterized by using the pulling device according to claim 1, and comprising the steps of:
s1, inserting the pulling piece (200) into the hole of the shearing pin in a penetrating way;
s2, placing the fixing device (100) stably and fixing;
s3, driving the rod (300) to move upwards, so that the limiting block (400) enters the pulling piece (200) and the placing hole (210) is ensured to be unobstructed;
s4, inserting the stress block (600) into the placing hole (210) and ensuring that the limiting groove (610) is aligned with the limiting block (400);
s5, under the action of the elastic force of the pressure spring (500), the limiting block (400) is inserted into the limiting groove (610) of the rod (300);
s6, rotating the pulling piece (200), wherein the pulling piece (200) and the fixing device (100) rotate under the threaded fit to realize that the axial direction of the pulling piece (200) moves upwards, the upper end of the stress block (600) is abutted against the lower end of the shear pin, and then the pulling piece (200) drives the stress block (600) to move upwards and further drives the shear pin to be pulled out.
9. The method for pulling out a shear pin of a hydraulic turbine according to claim 8, wherein the step S2 includes the sub-steps of:
s201, forming the fixing device (100) by adopting a fixing plate (110) and supporting feet (120), and enabling the supporting feet (120) to be in threaded fit with the fixing plate (110), so that the extracting piece (200) is in threaded fit with the fixing plate (110), and ensuring that the supporting feet (120) and the extracting piece (200) are parallel to each other along the precession direction during threaded rotation;
s202, placing the fixing device (100) at a target position;
s203, the supporting leg (120) is rotatably adjusted by utilizing the threaded fit between the supporting leg (120) and the fixing plate (110), so that the free end of the supporting leg (120) is tightly abutted against a target position, and the stable placement of the whole fixing device (100) is further ensured.
10. The method for pulling out a shear pin of a hydraulic turbine according to claim 9, wherein in the step S3, an external force drives the rod (300) to move upward by grasping a handle (310) provided on the rod (300);
in the step S5, the external force is released or cancelled, so that the limiting block (400) is inserted into the limiting groove (610) by the lever (300) under the elastic force of the compressed spring (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111332167.4A CN113878541A (en) | 2021-11-11 | 2021-11-11 | Pulling device and pulling method for shear pin of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111332167.4A CN113878541A (en) | 2021-11-11 | 2021-11-11 | Pulling device and pulling method for shear pin of water turbine |
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| Publication Number | Publication Date |
|---|---|
| CN113878541A true CN113878541A (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111332167.4A Pending CN113878541A (en) | 2021-11-11 | 2021-11-11 | Pulling device and pulling method for shear pin of water turbine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20003714U1 (en) * | 2000-02-29 | 2000-08-10 | Thyssen Gas | Device for dismantling screwed flange connections |
| CN103538025A (en) * | 2013-10-24 | 2014-01-29 | 陕西盛迈石油有限公司 | Drive pulley assisting replacer |
| CN203622359U (en) * | 2013-12-06 | 2014-06-04 | 中国石油集团渤海石油装备制造有限公司 | Bearing detacher device |
| CN104368955A (en) * | 2014-10-01 | 2015-02-25 | 鄂尔多斯职业学院 | Multifunctional bidirectional hydraulic bearing puller |
| CN204748479U (en) * | 2015-06-26 | 2015-11-11 | 国网四川省电力公司映秀湾水力发电总厂 | Device is dialled out to break pin |
| CN105666405A (en) * | 2016-03-29 | 2016-06-15 | 国家电网公司 | Simple pulling-out tool for shear pin of water turbine |
| CN205852668U (en) * | 2016-07-21 | 2017-01-04 | 金川集团股份有限公司 | A kind of light instrument for dismantling belt pulleys |
-
2021
- 2021-11-11 CN CN202111332167.4A patent/CN113878541A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20003714U1 (en) * | 2000-02-29 | 2000-08-10 | Thyssen Gas | Device for dismantling screwed flange connections |
| CN103538025A (en) * | 2013-10-24 | 2014-01-29 | 陕西盛迈石油有限公司 | Drive pulley assisting replacer |
| CN203622359U (en) * | 2013-12-06 | 2014-06-04 | 中国石油集团渤海石油装备制造有限公司 | Bearing detacher device |
| CN104368955A (en) * | 2014-10-01 | 2015-02-25 | 鄂尔多斯职业学院 | Multifunctional bidirectional hydraulic bearing puller |
| CN204748479U (en) * | 2015-06-26 | 2015-11-11 | 国网四川省电力公司映秀湾水力发电总厂 | Device is dialled out to break pin |
| CN105666405A (en) * | 2016-03-29 | 2016-06-15 | 国家电网公司 | Simple pulling-out tool for shear pin of water turbine |
| CN205852668U (en) * | 2016-07-21 | 2017-01-04 | 金川集团股份有限公司 | A kind of light instrument for dismantling belt pulleys |
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Application publication date: 20220104 |
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