A device for extracting a shear pin of a hydraulic turbine

Abstract

This utility model discloses a device for removing shear pins from a water turbine, belonging to the field of water turbine maintenance technology. Its features include a connecting device with an impact device sleeved on it. Impact blocks are provided on both sides of the impact device. The connecting device includes a first end and a second end, with a connecting rod at the second end having external threads. A positioning block is provided on the side of the connecting device near the first end, and a connecting piece is provided on the side of the impact block near the first end. The connecting piece is connected to the positioning block via a fixing device. Compared with existing technologies, the core of this utility model lies in achieving a rapid and safe removal of the shear pin from the water turbine by moving the impact device up and down along the connecting device. The structural design is simple and clear, reducing unnecessary complexity, manufacturing costs, and maintenance difficulty. It is easy to operate, requiring no professional training, and improves work efficiency and safety.

Description

Technical Field

[0001] This utility model belongs to the field of water turbine maintenance technology, and in particular relates to a device for pulling out shear pins from water turbines. Background Technology

[0002] The shear pin of the guide vane crank arm plays a crucial role in ensuring the safe and stable operation of the turbine. Its main function is to prevent the shear pin from breaking in time when a guide vane fails to operate normally due to a malfunction, thus preventing the faulty guide vane from affecting the normal operation of other guide vanes and also avoiding further damage to the transmission mechanism.

[0003] However, in practice, after a period of operation, the shear pin may become stuck in the pin hole of the guide vane crank arm due to natural factors such as rust and wear, making it difficult to remove. This situation is particularly common when the shear pin needs maintenance or replacement, or when it has been broken and needs to be replaced. The traditional solution is usually to use tapping and vibration to try to shake the stuck shear pin out. However, this method is not only time-consuming and laborious, but the force generated during the tapping process can easily deform the part being tapped, increasing the difficulty and cost of maintenance.

[0004] Therefore, in order to solve the above problems, it is particularly urgent and important to design a new type of turbine shear pin removal device. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and design a new turbine shear pin extraction device. This turbine shear pin extraction device has a simple structure and is easy to install; it solves the problem of the difficulty in the existing turbine shear pin extraction process.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A device for removing shear pins from a water turbine.

[0008] Its features are,

[0009] Includes connecting devices,

[0010] An impact device is sleeved on the outside of the connecting device.

[0011] Impact blocks are provided on both sides of the impact device.

[0012] The connecting device includes a first end and a second end.

[0013] The cross-sectional area of ​​the first end is larger than the cross-sectional area of ​​the second end.

[0014] A connecting rod is provided at the second end.

[0015] The connecting rod is provided with external threads.

[0016] A positioning block is provided on the side of the connecting device near the first end.

[0017] A connector is provided on the side of the impact block near the first end.

[0018] The connector is connected to the positioning block via a fixing device.

[0019] In a preferred embodiment of this utility model, the fixing device includes a hanging ring.

[0020] The hanging ring is fixed to the end of the connector.

[0021] A connecting strap is provided inside the hanging ring.

[0022] The connecting strip is wrapped around the side of the positioning block near the first end face.

[0023] The positioning block is provided with a fixing groove for fixing the connecting belt.

[0024] In a preferred embodiment of this invention, the fixing device includes a fixing ring.

[0025] The retaining ring is fixed to the end of the connector.

[0026] The fixing ring is fixed to the side of the positioning block.

[0027] In a preferred embodiment of this utility model, the fixing device is a buckle.

[0028] The length of the buckle opening side is the same as the width of the positioning block.

[0029] The buckle engages with the side of the positioning block.

[0030] In a preferred embodiment of this invention, a handle is provided on the side of the impact block.

[0031] The grip is provided with protrusions that conform to the human body.

[0032] In a preferred embodiment of this utility model, a handle is provided on the side of the impact block.

[0033] In a preferred embodiment of this utility model, a curved rod is provided at the end of the handle.

[0034] In a preferred embodiment of this utility model, the watch layer is provided with a wear-resistant and anti-slip pad.

[0035] In a preferred embodiment of this utility model, the connecting device adopts a cylindrical structure;

[0036] The impact device has a circular cross-section.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] This utility model relates to a device for removing shear pins from water turbines. The core of the device lies in using an impact mechanism that moves vertically along a connecting device to quickly and safely remove the shear pins. The structure is simple and clear, reducing unnecessary complexity, manufacturing costs, and maintenance difficulty. It is easy to operate, requiring no professional training, and greatly improves work efficiency and safety. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0040] Figure 2 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0041] Figure 3 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0042] Figure 4 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0043] Figure 5 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0044] Figure 6 This is a schematic diagram of one embodiment of a device for pulling out shear pins in a water turbine according to the present invention.

[0045] Figure 7 This is a partial schematic diagram of a certain embodiment of a device for pulling out shear pins of a water turbine according to the present invention;

[0046] Figure 8 This is a partial schematic diagram of a certain embodiment of a device for pulling out shear pins of a water turbine according to the present invention;

[0047] Figure 9 This is a partial top view of a device for pulling out shear pins in a water turbine, as proposed in this utility model.

[0048] Figure 10This is a schematic diagram of a positioning block for a device for pulling out shear pins in a water turbine, as proposed in this utility model.

[0049] Figure 11 This is a schematic diagram of one embodiment of a device for pulling out shear pins from a water turbine, as proposed in this utility model.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Connecting device,

[0052] 1-1, First end,

[0053] 1-2, Second end

[0054] 1-3, Connecting rod,

[0055] 1-4, Positioning blocks,

[0056] 2. Impact device,

[0057] 2-1. Impact block

[0058] 2-2. Connecting parts,

[0059] 3. Hanging ring,

[0060] 3-2. Connecting belt,

[0061] 3-3, Fixing groove,

[0062] 4. Fixing ring,

[0063] 5. Buckle,

[0064] 6. Handle

[0065] 7. Handle,

[0066] 7-1. Bending rod. Detailed Implementation

[0067] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0068] It should be noted that the structures, colors, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0069] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0070] like Figures 1-11 As shown, this utility model discloses a device for removing a shear pin from a water turbine. It includes a connecting device 1, with an impact device 2 sleeved on the outside of the connecting device 1. The connecting device 1 and the impact device 2 are not fixedly connected, and the connecting device 1 can move within the impact device 2. The connecting device 1 is used to connect the shear pin to the water turbine, and the impact device 2 is used to pull the connecting device 1 outward, thereby causing the shear pin to detach from the water turbine guide vanes, completing the removal of the shear pin.

[0071] Example 1:

[0072] like Figures 1-11 As shown, impact blocks 2-1 are provided on both sides of the impact device 2. The impact blocks 2-1 increase the impact force transmitted from the impact device 2 to the connecting device 1, ensuring that the connecting device 1 receives sufficient force to pull out the turbine shear pin. The presence of impact blocks 2-1 on both sides of the impact device 2 ensures that the impact force received by the connecting device 1 is uniform.

[0073] The connecting device 1 includes a first end 1-1 and a second end 1-2. The cross-sectional area of ​​the first end 1-1 is larger than that of the second end 1-2. The cross-sectional area of ​​the connecting device 1 gradually decreases from the first end 1-1 to the second end 1-2, ensuring that the impact device 2 can be smoothly fitted onto the outside of the impact device 2 and move along the connecting device 1 without being ejected from the first end 1-1.

[0074] The second end 1-2 is provided with a connecting rod 1-3, which has an external thread, so that the connecting device 1 and the turbine shear pin are threadedly connected.

[0075] This utility model discloses a device for pulling out the shear pin of a water turbine. It has a simple structure and is easy to use. Specifically, the impact device 2 moves up and down along the connecting device 1 to drive the shear pin of the water turbine to be pulled out quickly and safely.

[0076] A positioning block 1-4 is provided on the side of the connecting device 1 near the first end 1-1, and a connecting piece 2-2 is provided on the side of the impact block 2-1 near the first end 1-1. The connecting piece 2-2 is connected to the positioning block 1-4 through a fixing device. The impact device 2 is positioned by the positioning rod to prevent the impact device 2 from falling and injuring the staff when using this device, thus protecting the safety of the staff.

[0077] Example 2:

[0078] Based on Example 1, the structure of the fixing device is defined.

[0079] Specifically:

[0080] like Figure 1 As shown, the fixing device includes a hanging ring 3, which is fixed to the end of the connector 2-2. A connecting strap 3-2 is provided inside the hanging ring 3. The connecting strap 3-2 is wrapped around the side of the positioning block 1-4 near the first end face. The connecting block connects the impact device 2 and the connecting device 1, limiting the impact device 2 and preventing it from falling off. The positioning block has a fixing groove 3-3 for fixing the connecting strap 3-2, limiting the connecting strap 3-2 and preventing it from rotating along the connecting device 1 and falling off.

[0081] Preferably, the connecting strip 3-2 can be iron wire, which can be directly wrapped around the connecting device 1, making connection and disassembly very convenient.

[0082] Example 3:

[0083] Based on Example 1, the structure of the fixing device is defined.

[0084] Specifically:

[0085] like Figure 2 As shown, the fixing device includes a fixing ring 4, which is fixed to the end of the connector 2-2 and the side of the positioning block 1-4. The ring structure is directly sleeved onto the connecting device 1, and the increased circumference of the positioning block and the connecting device 1 helps to limit the movement of the impact device 2.

[0086] However, in actual manufacturing, a sufficient distance must be set between the positioning block and the increased circumference of the connecting device 1 to ensure that the impact device 2 can move up and down along the connecting device 1 to transmit the impact force to the connecting device 1, thus ensuring the overall use of the device.

[0087] Example 4:

[0088] Based on Example 1, the structure of the fixing device is defined.

[0089] Specifically:

[0090] like Figure 3 As shown, the fixing device is a buckle 5. The length of the open side of the buckle 5 is the same as the width of the positioning block 1-4, and the buckle 5 is snapped into the side of the positioning block 1-4. The connection method is simple and convenient.

[0091] Preferably, a rubber pad can also be provided on the inner side of the buckle 5 to prevent the buckle 5 from dislodging from the positioning block 1-4, which would prevent the fixing device from fully functioning.

[0092] Example 5:

[0093] like Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, based on Embodiment 1, the impact block 2-1 is provided with a handle 6 on its side, and the handle 6 is provided with a protrusion that conforms to the human body. The handle 6 is provided for the operator to grip, improving the comfort of the device during use.

[0094] Example 6:

[0095] like Figure 4 , Figure 5 , Figure 6 ,and Figure 8 As shown, a handle 7 is provided on the side of the impact block 2-1. The handle 7 and the grip 6 have different mechanisms; the appropriate grip structure should be selected according to the actual site conditions.

[0096] Example 7:

[0097] like Figure 4 , Figure 5 , Figure 6 ,and Figure 8 As shown, a curved rod 7-1 is provided at the end of the handle 7. This prevents the sharp edges of the handle 7 from posing a threat to the safety of workers.

[0098] Example 8:

[0099] The handle 7 has a wear-resistant and anti-slip pad on its surface. Made of special materials, it has good wear resistance and excellent anti-slip properties, ensuring that users can firmly grip the handle 7 even in wet or oily environments, effectively preventing slippage or accidental release. This also prevents discomfort during prolonged use, reduces hand fatigue, and avoids the risk of slippage caused by sweaty hands or a humid environment, thus improving the safety, comfort, practicality, and security of use.

[0100] In addition, the wear-resistant and anti-slip mat also has a certain cushioning effect, which can protect hands from injury by hard objects to a certain extent and increase the safety of use.

[0101] Example 9:

[0102] The connecting device 1 adopts a cylindrical structure, and the impact device has a circular cross-section. The contact surfaces between the impact device and the connecting device 1 are smooth and without sharp edges. The impact device can rotate when moving up and down along the connecting device 1 without needing to align with sharp edges, making it convenient to use.

[0103] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for removing shear pins from a water turbine. Its features are, Includes a connecting device (1). An impact device (2) is sleeved on the outside of the connecting device (1). Impact blocks (2-1) are provided on both sides of the impact device (2). The connecting device (1) includes a first end (1-1) and a second end (1-2). The cross-sectional area of ​​the first end (1-1) is larger than the cross-sectional area of ​​the second end (1-2). A connecting rod (1-3) is provided at the second end (1-2). The connecting rod (1-3) is provided with external threads. The connecting device (1) has a positioning block (1-4) on the side near the first end (1-1). A connector (2-2) is provided on the side of the impact block (2-1) near the first end (1-1). The connector (2-2) is connected to the positioning block (1-4) via a fixing device.

2. The device for pulling out shear pins from a water turbine as described in claim 1. Its features are, The fixing device includes a hanging ring (3). The hanging ring (3) is fixed to the end of the connector (2-2). The hanging ring (3) is provided with a connecting strap (3-2). The connecting strip (3-2) is wrapped around the side of the positioning block (1-4) near the first end face. The positioning block (1-4) is provided with a fixing groove (3-3) for fixing the connecting strip (3-2).

3. The device for pulling out the shear pin of a water turbine as described in claim 1. Its features are, The fixing device includes a fixing ring (4). The fixing ring (4) is fixed to the end of the connector (2-2). The fixing ring (4) is fixed to the side of the positioning block (1-4).

4. The device for removing shear pins from a water turbine as described in claim 1. Its features are, The fixing device is a buckle (5). The length of the opening side of the buckle (5) is the same as the width of the positioning block (1-4). The buckle (5) is engaged with the side of the positioning block (1-4).

5. The device for pulling out shear pins from a water turbine as described in claim 1. Its features are, The impact block (2-1) is provided with a handle (6) on its side. The grip (6) is provided with protrusions that conform to the human body.

6. The device for removing shear pins from a water turbine as described in claim 1. Its features are, The impact block (2-1) is provided with a handle (7) on its side.

7. A device for removing shear pins from a water turbine as described in claim 6. Its features are, The handle (7) is provided with a curved rod (7-1) at its end.

8. A device for removing shear pins from a water turbine as described in claim 6. Its features are, The handle (7) is provided with a wear-resistant and anti-slip pad on its surface.

9. A device for removing shear pins from a water turbine as described in claim 1. Its features are, The connecting device (1) adopts a cylindrical structure; The impact device (2) has a circular cross-section.

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