A special knock-out sleeve for bolt tensioner of high voltage equipment

Abstract

The utility model provides a kind of knock out sleeve special for high-voltage equipment bolt stretcher, specifically related to high-voltage equipment dismounting technical field, to solve the technical problem that there is no knock out sleeve special for dismounting large-diameter bolt of high-voltage equipment in current market.The utility model includes the out sleeve main part of cylindrical, the outside of the out sleeve main part is equipped with knock handle, the inside of the out sleeve main part is equipped with plum-blossom type connecting groove, the out sleeve main part, knock handle and plum-blossom type connecting groove are all using alloy steel material and are connected by integral forming, the plum-blossom type connecting groove inner diameter is matched with the outer diameter of large-diameter bolt, the length of knock handle is greater than the diameter of the out sleeve main part.The utility model provides a kind of knock out sleeve special for high-voltage equipment bolt stretcher, and it is suitable for dismounting large-diameter bolt in high-voltage equipment.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage equipment disassembly technology, and more specifically, to a special hammer pull sleeve for high-voltage equipment bolt tensioners. Background Technology

[0002] For large-diameter bolts in high-pressure equipment, due to their excessive size, they are generally disassembled using a hydraulic tensioner. A typical hydraulic tensioner consists of a support bridge, cylinder, pull rod, quick coupling, safety cover, lever, and sleeve. The tension generated by the hydraulic pump stretches the bolt within its elastic deformation zone, and then the lever rotates the sleeve to loosen the nut. However, due to prolonged exposure to high temperature, high humidity, or corrosive environments, and the application of high tightening forces, large-diameter bolts are prone to corrosion or seizing. For such seized bolts, rotating the sleeve using the lever in the hydraulic tensioner becomes extremely difficult, severely impacting the disassembly speed and efficiency.

[0003] For ordinary diameter seized bolts, they can be removed by striking with a wrench and hammer. However, due to the large diameter bolts in high-voltage equipment, which are usually M36 or larger and 200mm or longer, the existing wrench sizes are generally 17mm to 100mm, which is not suitable for large diameter bolts. Even if they are scaled up proportionally, they would still be too heavy and bulky, making them inconvenient for narrow working spaces and manual operation.

[0004] Therefore, there is an urgent need for a special hammer puller for bolt tensioners in high-pressure equipment, which is suitable for disassembling large-diameter bolts in high-pressure equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a special hammer pull sleeve for bolt tensioners in high-pressure equipment, which is suitable for disassembling large-diameter bolts in high-pressure equipment.

[0006] The embodiments of this utility model are achieved through the following technical solutions:

[0007] A special hammer puller for high-pressure equipment bolt tensioners includes a cylindrical puller body, a hammer handle on the outer side of the puller body, and a plum blossom-shaped connecting groove on the inner side of the puller body. The puller body, hammer handle, and plum blossom-shaped connecting groove are all made of alloy steel and are integrally formed. The inner diameter of the plum blossom-shaped connecting groove matches the outer diameter of a large-diameter bolt, and the length of the hammer handle is greater than the diameter of the puller body.

[0008] In some embodiments, the striking handle is provided with composite impact heads on both sides.

[0009] In some embodiments, the composite impact head includes a protrusion made of alloy steel and the striking handle, the outer side of which is fitted with a tungsten carbide wear-resistant layer, the tungsten carbide wear-resistant layer being welded to the outside of the protrusion by a copper brazing layer.

[0010] In some embodiments, the interior of the protrusion is provided with a plurality of shock-absorbing buffer layers, which are honeycomb-shaped hexagonal array structures.

[0011] In some embodiments, the composite impact head is fixedly connected to the striking handle via a gradient brazing transition layer.

[0012] In some embodiments, the striking handle is provided with triangular reinforcing ribs on both sides, one side of the triangular reinforcing ribs extending to the outer side of the pull sleeve body, and the inclined surface of the triangular reinforcing ribs being tangent to the outer side of the pull sleeve body.

[0013] In some embodiments, the triangular reinforcing rib is integrally formed and connected to the striking handle.

[0014] In some embodiments, an elastic covering layer is sleeved on the outer side of the striking handle, and the elastic covering layer is disposed between the composite impact head and the pull sleeve body.

[0015] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0016] 1. This device provides a special hammering pull sleeve for bolt tensioners in high-pressure equipment, which is suitable for disassembling large-diameter bolts in high-pressure equipment.

[0017] 2. When this device is in use, external impacts act on the composite impact head, which can absorb the excess impact generated during the strike, thereby improving the impact resistance of the striking handle and thus increasing the service life of the striking handle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of a special striking pull sleeve for a high-pressure equipment bolt tensioner provided in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a special hammer pull sleeve for a high-pressure equipment bolt tensioner provided in an embodiment of the present utility model.

[0021] Figure 3 This is a front view of a special hammer pull sleeve for a high-pressure equipment bolt tensioner provided in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the composite impact head provided in an embodiment of this utility model.

[0023] Icons: 1. Pull-out body; 2. Striking handle; 3. Plum blossom-shaped connecting groove; 4. Protrusion; 5. Tungsten carbide wear-resistant layer; 6. Copper brazing layer; 7. Shock-absorbing buffer layer; 8. Gradient brazing transition layer; 9. Triangular reinforcing rib; 10. Elastic covering layer. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example

[0030] Please see Figures 1-4 As shown, this embodiment provides a special hammer puller for high-pressure equipment bolt tensioners, including a cylindrical puller body 1. The outer side of the puller body 1 is provided with a hammer handle 2, and the inner side of the puller body 1 is provided with a plum blossom-shaped connecting groove 3. The puller body 1, the hammer handle 2, and the plum blossom-shaped connecting groove 3 are all made of 42CrMo alloy steel and are integrally formed. The inner diameter of the plum blossom-shaped connecting groove 3 matches the outer diameter of the large-diameter bolt, and the length of the hammer handle 2 is greater than the diameter of the puller body 1.

[0031] Furthermore, the striking handle 2 is provided with compound impact heads on both sides for striking, and the compound impact heads are located at the outer end of the striking handle 2.

[0032] Furthermore, the composite impact head includes a protrusion 4 made of 42CrMo alloy steel, which is the same as the striking handle 2. A tungsten carbide wear-resistant layer 5 is sleeved on the outside of the protrusion 4, and the tungsten carbide wear-resistant layer 5 is welded to the outside of the protrusion 4 by a copper brazing layer 6.

[0033] Furthermore, the interior of the protrusion 4 is provided with multiple shock-absorbing buffer layers 7, which are honeycomb-shaped hexagonal array structures. Some of the shock-absorbing buffer layers 7 are made of titanium alloy, while others are made of carbon fiber.

[0034] Furthermore, the composite impact head is fixedly connected to the striking handle 2 via a gradient brazing transition layer 8.

[0035] Furthermore, the striking handle 2 is provided with triangular reinforcing ribs 9 on both sides, one side of which extends to the outer side of the pull sleeve body 1, and the inclined surface of the triangular reinforcing rib 9 is tangent to the outer side of the pull sleeve body 1.

[0036] Furthermore, the triangular reinforcing rib 9 is integrally formed and connected to the striking handle 2.

[0037] Furthermore, an elastic silicone covering layer 10 is sleeved on the outer side of the striking handle 2, and the elastic covering layer 10 is disposed between the composite impact head and the pull sleeve body 1.

[0038] In the process of disassembling large-diameter bolts on high-voltage equipment, the pull sleeve body is first fitted onto the outside of the large-diameter bolt, allowing the plum blossom-shaped connecting groove 3 to engage with the nut of the large-diameter bolt. Then, workers use tools such as hammers to strike the composite impact head of the striking handle 2 to generate torque, thereby disassembling the large-diameter bolt. During striking, the external impact acts on the composite impact head, which absorbs excess impact generated during striking, thus improving the impact resistance of the striking handle 2 and extending its service life. The tungsten carbide wear-resistant layer 5 is used to withstand instantaneous impact loads, thereby reducing plastic deformation of the striking contact surface. In addition, the tungsten carbide wear-resistant layer 5, the copper brazing layer 6, and the protrusion 4 form a three-layer gradient dispersion structure to disperse the stress waves caused by external impacts on the striking handle 2. In addition, the interior of the protrusion 4 is equipped with multiple shock-absorbing buffer layers 7 to dissipate the vibration energy caused by the impact. Among them, the shock-absorbing buffer layer 7 made of titanium alloy is used to absorb high-frequency vibration energy and reduce stress wave peaks; the shock-absorbing buffer layer 7 made of carbon fiber is used to absorb low-frequency vibration energy and suppress structural resonance.

[0039] It is worth mentioning that the angular reinforcing ribs are used to improve the structural strength of the joint between the striking handle 2 and the pull sleeve body 1, and the elastic covering layer 10 is used for the staff to pick up the device or to assist the striking action of the handle 2 by hand.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A knock out socket for high voltage equipment bolt tensioner, characterized in that, The device includes a cylindrical pull sleeve body (1), a striking handle (2) on the outer side of the pull sleeve body (1), and a plum blossom-shaped connecting groove (3) on the inner side of the pull sleeve body (1). The pull sleeve body (1), the striking handle (2) and the plum blossom-shaped connecting groove (3) are all made of alloy steel and are connected by integral molding. The inner diameter of the plum blossom-shaped connecting groove (3) matches the outer diameter of the large-diameter bolt. The length of the striking handle (2) is greater than the diameter of the pull sleeve body (1).

2. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 1 wherein, The striking handle (2) is provided with composite impact heads on both sides.

3. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 2, wherein, The composite impact head includes a protrusion (4) made of alloy steel, which is the same as the striking handle (2). A tungsten carbide wear-resistant layer (5) is sleeved on the outside of the protrusion (4). The tungsten carbide wear-resistant layer (5) is welded to the outside of the protrusion (4) by a copper brazing layer (6).

4. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 3 wherein, The protrusion (4) has multiple shock-absorbing buffer layers (7) arranged inside, and the shock-absorbing buffer layer (7) is a honeycomb hexagonal array structure.

5. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 2 wherein, The composite impact head is fixedly connected to the striking handle (2) through a gradient brazing transition layer (8).

6. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 1 wherein, The striking handle (2) is provided with triangular reinforcing ribs (9) on both sides. One side of the triangular reinforcing rib (9) extends to the outer side of the pull sleeve body (1), and the inclined surface of the triangular reinforcing rib (9) is tangent to the outer side of the pull sleeve body (1).

7. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 6 wherein, The triangular reinforcing rib (9) is integrally formed and connected with the striking handle (2).

8. A knock out sleeve for high voltage equipment bolt tensioner as claimed in claim 2 wherein, An elastic covering layer (10) is sleeved on the outside of the striking handle (2), and the elastic covering layer (10) is disposed between the composite impact head and the pull sleeve body (1).

Images