Universal rectangular sealing ring gasket cutting tool

Abstract

This utility model discloses a universal rectangular sealing ring gasket cutting tool, including a horizontal bar, a positioning component vertically disposed at one end of the horizontal bar and positioning the cutting center, and a cutting component slidably disposed on the horizontal bar. After the cutting component slides to a preset position on the horizontal bar, it is fixed to the horizontal bar by fasteners and can be driven to make circumferential motion around the positioning component to cut the gasket. The universal rectangular sealing ring gasket cutting tool of this utility model, through the design of adjustable cutting component and horizontal adjustment component, realizes the function of accurately cutting sealing rings of different sizes, while ensuring the stability of the cutting process. It has the advantages of improving cutting accuracy, being easy to carry and operate, and adapting to the cutting needs of sealing rings of different sizes.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing ring cutting tools, specifically to a general-purpose rectangular sealing ring gasket cutting tool. Background Technology

[0002] As sealing components, rubber sealing rings play a crucial role in transformer operation. However, rubber products are prone to aging over prolonged use, and transformers often operate outdoors where the corrosive transformer oil operates at high temperatures, mostly above 40°C. This significantly accelerates the aging process of the sealing rings, reducing their elasticity and causing oil leaks at transformer component connections. Therefore, maintenance personnel need to replace aging sealing rings at leaking points.

[0003] In transformer maintenance practice, there are numerous transformer manufacturers nationwide, and the diameters of flanges at various connections vary significantly, frequently resulting in missing or mismatched spare sealing rings. Maintenance personnel are forced to carry rubber gaskets and cutting tools on-site. Existing cutting tools have significant drawbacks: first, the inner and outer diameters of the flange sealing ring must be repeatedly measured manually with a ruler; then, cutting lines must be manually marked on the rubber sheet; and finally, a step-by-step cutting operation is performed. This method is not only time-consuming and labor-intensive, but also makes it difficult to guarantee cutting accuracy, often resulting in excessive dimensional errors. Although high-precision cutting equipment exists on the market, these devices are generally bulky and require external power supplies, failing to meet the portability and ease-of-operation requirements of on-site transformer repair. Especially in field operations, the lack of a stable power supply further hinders the effectiveness of these devices. Furthermore, existing tools lack effective leveling and positioning functions, leading to easy skewing during the cutting process, further affecting the forming quality and service life of the sealing ring. Utility Model Content

[0004] In view of this, the present invention provides a universal rectangular sealing ring gasket cutting tool, which has the advantages of improving cutting accuracy, being easy to carry and operate, and adapting to the cutting needs of sealing rings of different sizes. It is not only suitable for cutting transformer sealing rings, but can also be applied to industries that require the use of sealing rings, such as gas pipelines and water conservancy.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A general-purpose rectangular sealing ring gasket cutting tool includes a crossbar, a positioning element erected at one end of the crossbar and positioning the cutting center, and a cutting element slidably disposed on the crossbar. After the cutting element slides to a preset position on the crossbar, it is fixed to the crossbar by fasteners and can be driven to make circumferential motion around the positioning element to cut the gasket.

[0007] Furthermore, it also includes a horizontal adjustment component that is arranged parallel to the positioning component and located at the other end of the crossbar. The length of the horizontal adjustment component is adjustable to ensure the horizontality of the crossbar, and a pulley is provided at the bottom of the horizontal adjustment component.

[0008] Furthermore, the cutting component includes a sleeve fitted onto the crossbar, a tool clamp plate disposed on the outer wall of the sleeve, and a cutting tool detachably mounted on the tool clamp plate.

[0009] Furthermore, the fastener is a fastening bolt, and the sleeve is also provided with a connecting hole for threaded engagement with the fastening bolt. After the fastening bolt passes through the connecting hole, it abuts against the crossbar to fix the sleeve to the crossbar.

[0010] Furthermore, the horizontal adjustment component includes a fixed plate fixedly connected to the crossbar and an adjustment plate mounted on the fixed plate by a bolt assembly. The adjustment plate can be adjusted in the vertical direction to change the length of the horizontal adjustment component itself, and the pulley is disposed at the bottom of the adjustment plate.

[0011] Furthermore, the crossbar is equipped with scale lines and a level. The level is used to detect the horizontality of the crossbar, and the scale lines are used to ensure the accuracy of the cutting position of the cutting assembly.

[0012] Furthermore, the bottom of the positioning component is a conical structure, and the top of the positioning component is provided with a hand rest.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a general-purpose rectangular sealing ring gasket cutting tool, which, through the design of adjustable cutting parts and horizontal adjustment parts, realizes the function of accurately cutting sealing rings of different sizes, while ensuring the stability of the cutting process. It has the advantages of improving cutting accuracy, being easy to carry and operate, and adapting to the cutting needs of sealing rings of different sizes. At the same time, this cutting tool is not only suitable for cutting transformer sealing rings, but can also be applied to industries that require the use of sealing rings, such as gas pipelines and water conservancy. Attached Figure Description

[0014] Figure 1 This is an isometric schematic diagram of the rubber pad cutting tool in this utility model;

[0015] Figure 2 This is a front view of the rubber pad cutting tool in this utility model;

[0016] Figure 3 for Figure 2 AA section view;

[0017] Figure 4 for Figure 2 BB section view;

[0018] Figure 5 for Figure 2 CC section view;

[0019] Figure 6 This is a top view of the rubber pad cutting tool of this utility model;

[0020] The attached diagram is labeled as follows: 1-crossbar; 2-positioning component; 3-sleeve; 4-tool clamp; 5-cutting tool; 6-fastener; 7-connecting hole; 8-pulley; 9-fixing plate; 10-adjusting plate; 11-bolt assembly; 12-hand rest. Detailed Implementation

[0021] As shown in the figure, this utility model provides a universal rectangular sealing ring gasket cutting tool, including a horizontal bar 1, a positioning element 2 vertically set at one end of the horizontal bar 1 and positioning the cutting center, and a cutting element slidably set on the horizontal bar 1. After the cutting element slides to a preset position on the horizontal bar 1, it is fixed to the horizontal bar 1 by fasteners 6 and can be driven to make a circular motion around the positioning element 2 to cut the gasket. The horizontal bar 1, as a support structure, can be made of metal tubing or composite material, and its length can be adjusted according to actual needs. The positioning element 2 is used to determine the cutting center and is welded and fixed to one end of the horizontal bar 1. The cutting element adjusts its position by sliding, and the circular motion is mainly driven by manual rotation. This technical solution uses the positioning element 2 to determine the cutting center, the cutting element slides along the horizontal bar 1 to adjust the cutting radius, and after fixing, rotates around the center to complete the cutting. Compared with the existing manual measurement and cutting methods, this solution can quickly and accurately determine the cutting position, ensuring the dimensional accuracy of the sealing ring. At the same time, the tool has a simple and lightweight structure, is easy to carry and operate on-site, and solves the problems of mismatched sealing ring dimensions and insufficient cutting accuracy during maintenance.

[0022] In this embodiment, a horizontal adjustment component is also included, which is arranged parallel to the positioning component 2 and located at the other end of the crossbar 1. The length of the horizontal adjustment component is adjustable to ensure the horizontality of the crossbar 1, and a pulley 8 is provided at the bottom of the horizontal adjustment component. Figure 1 and Figure 2 As shown, the horizontal adjustment component can be implemented in the following ways: In one embodiment, the horizontal adjustment component consists of a fixed plate 9 and an adjusting plate 10. The fixed plate 9 is fixedly connected to the crossbar 1, and the adjusting plate 10 is installed on the fixed plate 9 by a bolt assembly 11. By adjusting the tightness of the bolt assembly 11, the installation position of the adjusting plate 10 in the vertical direction can be changed, thereby realizing the adjustment of the overall length of the horizontal adjustment component; In another embodiment, the horizontal adjustment component adopts a telescopic rod structure, and the extension length of the telescopic rod is fixed by a locking mechanism; The pulley 8 can adopt a universal wheel structure to facilitate the direction adjustment when the tool moves.

[0023] This technical solution effectively solves the problem of ensuring the horizontality of the crossbar 1 during the use of the cutting tool by using an adjustable-length horizontal adjustment component and a pulley structure 8. The horizontal adjustment component can be adjusted in length according to the actual situation on site to keep the crossbar 1 horizontal and ensure cutting accuracy; the pulley structure at the bottom facilitates tool movement and positioning, improving the convenience of on-site operation.

[0024] In this embodiment, the cutting component includes a sleeve 3 fitted onto the crossbar 1, a tool clamp 4 disposed on the outer wall of the sleeve 3, and a cutting tool 5 detachably mounted on the tool clamp 4. Figure 1 and Figure 2 As shown, the sleeve 3 adopts a hollow cylindrical tube structure, with an inner diameter slightly larger than the outer diameter of the crossbar 1 to achieve a sliding fit. A through hole is provided on the side wall of the sleeve 3 for subsequent fastening operations. The tool clamp 4 is fixed to the outer wall of the sleeve 3 by welding or integral molding with it. The working surface of the clamp has a tool mounting groove and a fastening screw hole for fixing the cutting tool 5 with the fastening bolt. The cutting tool 5 uses a carbide blade, placed in the mounting groove formed by the tool clamp 4, and can be quickly installed and removed by abutting against the tool clamp 4 with the fastening bolt. This technical solution achieves stepless adjustment of the cutting radius through the sliding fit between the sleeve 3 and the crossbar 1. Combined with the detachable tool design, it allows for quick replacement of different blade specifications to accommodate various rubber pad materials. The rigid connection between the tool clamp 4 and the sleeve 3 ensures stability during the cutting process and avoids the common tool deviation problem in manual cutting.

[0025] In this embodiment, the fastener 6 is a fastening bolt, and the sleeve 3 is also provided with a connecting hole 7 for threaded engagement with the fastening bolt. After the fastening bolt passes through the connecting hole 7, it abuts against the crossbar 1 to fix the sleeve 3 to the crossbar 1. This technical solution achieves rapid locking of the cutting part position through threaded fastening, solving the problem of reduced cutting accuracy caused by insecure fixing in traditional tools. The threaded engagement structure has self-locking characteristics, which can effectively resist radial forces during the cutting process and prevent the sleeve 3 from shifting on the crossbar 1. At the same time, the bolt fastening method is simple to operate, requiring only an ordinary wrench for adjustment, making it suitable for use in on-site emergency repair environments.

[0026] In this embodiment, the horizontal adjustment component includes a fixed plate 9 fixedly connected to the crossbar 1 and an adjustment plate 10 mounted on the fixed plate 9 via a bolt assembly 11. The adjustment plate 10 can be adjusted vertically in its mounting position on the fixed plate 9 to change the length of the horizontal adjustment component. The pulley 8 is disposed at the bottom of the adjustment plate 10. The fixed plate 9 is rigidly connected to the crossbar 1 by welding. The bolt assembly 11 includes at least two sets of symmetrically arranged bolt pairs, each bolt pair consisting of a bolt, a washer, and a nut. The bolt passes through an elongated hole on the fixed plate 9 and the adjustment plate 10. The elongated hole extends vertically, and its length determines the travel range of the adjustment plate 10. A pulley 8 mounting seat is welded to the bottom of the adjustment plate 10, and the pulley 8 is mounted on the pulley 8 mounting seat via a bearing. This technical solution achieves precise adjustment of the horizontality of the crossbar 1 through the vertically movable adjustment plate 10 structure. When the ground is uneven, the adjustment plate 10 can be moved up and down along the elongated hole by loosening the bolt assembly 11. The state of the crossbar 1 can be observed with the help of a level. Once the crossbar 1 is leveled, the bolts can be tightened to complete the adjustment.

[0027] In this embodiment, the crossbar 1 is equipped with scale lines and a level. The level is used to detect the levelness of the crossbar 1, and the scale lines are used to ensure the accuracy of the cutting position of the cutting component. The scale lines are evenly distributed along the length of the crossbar 1 and can be formed by laser etching or mechanical stamping. The smallest scale unit is at the millimeter level to meet the cutting accuracy requirements of the sealing ring. The level uses an existing electronic level, which will not be described in detail here. By using the scale lines and the level in combination, the operator can intuitively locate the cutting radius through the scale lines, and at the same time, the level can be used to correct the levelness of the crossbar 1 in real time, thereby ensuring the accuracy of the tool movement trajectory during the cutting process.

[0028] In this embodiment, the bottom of the positioning component 2 is a conical structure, and the top of the positioning component 2 is provided with a hand support 12. This technical solution achieves rapid positioning through the conical bottom, and together with the top hand support 12, forms a complete force transmission system. The conical structure produces a self-centering effect when piercing the rubber pad, avoiding the offset problem that is prone to occur in traditional flat-bottomed positioning components 2. The design of the hand support 12 allows the operator to hold and apply force with one hand, while the other hand can simultaneously adjust the position of the cutting component.

[0029] In this embodiment, the steps for using the rubber pad cutting tool are as follows:

[0030] (1) First, use vernier calipers to measure the inner and outer diameters and thickness of the rectangular sealing ring;

[0031] (2) Select a black nitrile rubber pad of appropriate thickness;

[0032] (3) Install the cutting tool 5 on the tool clamp 4, tighten the fastening bolts on the tool clamp 4, and apply an appropriate amount of silicone grease to the tip of the tool to prevent sticking and lubricate it.

[0033] (4) Adjust the sleeve position, read the vernier scale, so that the size between the apex of the positioning pin and the tip of the cutting tool 5 matches the inner diameter of the rectangular sealing ring, and tighten the fastening bolts on the sleeve;

[0034] (5) Press down firmly on the hand support 12 (do not release) so that the positioning part 2 is centered on the rubber pad and the cutting tool 5 is slightly in contact with the surface of the rubber pad.

[0035] (6) Slowly insert the cutting tool 5 into the bottom of the rubber pad; at the same time, adjust the level adjustment component, and when the level instrument reaches a horizontal state, tighten the horizontal positioning fastening bolt.

[0036] (7) Hold the hand support 12 with one hand and the crossbar 1 with the other hand, and slowly rotate the cutting tool 5 to cut the rubber pad around one circle to form the inner edge of the rectangular sealing ring;

[0037] (8) Remove the tool and repeat steps (3)-(7) to form the outer edge of the rectangular sealing ring, based on the determined outer diameter of the rectangular sealing ring.

[0038] (9) Remove the cut rectangular sealing ring from the rubber pad.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A universal rectangular gasket cutting tool, characterized by: It includes a crossbar, a positioning element erected at one end of the crossbar and positioned to determine the cutting center, and a cutting element slidably disposed on the crossbar. After the cutting element slides to a preset position on the crossbar, it is fixed to the crossbar by fasteners and can be driven to make a circular motion around the positioning element to cut the rubber pad.

2. The universal rectangular gasket cutting tool of claim 1, wherein: It also includes a horizontal adjustment component that is arranged parallel to the positioning component and located at the other end of the crossbar. The length of the horizontal adjustment component is adjustable to ensure the horizontality of the crossbar, and a pulley is provided at the bottom of the horizontal adjustment component.

3. The universal rectangular sealing ring gasket cutting tool according to claim 2, characterized in that: The cutting component includes a sleeve fitted onto the crossbar, a tool clamp plate disposed on the outer wall of the sleeve, and a cutting tool detachably mounted on the tool clamp plate.

4. The universal rectangular gasket cutting tool of claim 3, wherein: The fastener is a fastening bolt, and the sleeve is also provided with a connecting hole for threaded engagement with the fastening bolt. After the fastening bolt passes through the connecting hole, it abuts against the crossbar to fix the sleeve to the crossbar.

5. The universal rectangular gasket cutting tool of claim 2, wherein: The horizontal adjustment component includes a fixed plate fixedly connected to the crossbar and an adjustment plate mounted on the fixed plate by a bolt assembly. The adjustment plate can be adjusted in the vertical direction to change the length of the horizontal adjustment component itself. The pulley is located at the bottom of the adjustment plate.

6. The universal rectangular gasket cutting tool of claim 2, wherein: The crossbar is equipped with scale lines and a level. The level is used to detect the horizontality of the crossbar, and the scale lines are used to ensure the accuracy of the cutting position of the cutting component.

7. The universal rectangular gasket cutting tool of claim 1, wherein: The bottom of the positioning component is a conical structure, and the top of the positioning component is provided with a hand rest.

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