A double-ear stop gasket fixing device

Abstract

The present invention relates to a double-ear stop gasket fixing device, comprising a clamping assembly, a supporting assembly and a driving mechanism, wherein the clamping assembly comprises a first clip and a second clip arranged opposite to each other, the supporting assembly comprises a clip mounting portion provided with an accommodating cavity, the first clip and the second clip are respectively slidably matched with the side wall of the accommodating cavity, the clip mounting portion is provided with a plurality of supporting surfaces for abutting against a flange, and the driving mechanism is used to drive the second clip to move in a direction close to or away from the first clip to clamp or release the double-ear stop gasket. The clamping assembly in the double-ear stop gasket fixing device can clamp the long ear end of the double-ear stop gasket to prevent the gasket from rotating with the nut during the bolt tightening process, and can meet the clamping requirements of gaskets of different specifications, and can flatten the gasket for continued use when it is bent or deformed after use, thereby improving the adaptability and practicality of the double-ear stop gasket fixing device.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline installation auxiliary tools, in particular to a double-ear stop gasket fixing device. Background Art

[0002] Threaded connections are a widely used, removable, fixed connection, widely used in the mechanical field. However, due to the helical structure of the thread, loosening is inevitable in engineering applications. To improve the stability of mechanical engineering, a double-ear stop washer was designed for use with bolts. Due to its high reliability, easy processing, and low cost, it is widely used in industrial production as a thread loosening prevention mechanism.

[0003] However, during the actual installation process of the double-ear stop gasket, as the tightening torque applied to it continues to increase, the gasket will rotate along with the nut, making it impossible for the long ear end of the gasket to support the side support surface, thus losing the function of limiting the rotation of the gasket. Therefore, it is necessary to correct its position in real time during the bolt tightening process. However, tightening a bolt often requires repeated tightening multiple times, which requires a lot of time for adjustment and prolongs the entire maintenance period.

[0004] Related technologies employ a combination of a stopper and a receiving slot. By locking the long ear of the gasket into the receiving slot, the stopper limits the gasket's rotation. However, in actual production, gaskets come in a variety of different sizes. Designing a large receiving slot will not effectively limit the position, while designing a small receiving slot will not accommodate a variety of gaskets, resulting in a very low degree of adaptability. Furthermore, gaskets can bend or deform after use, causing the receiving slot to become unable to accommodate the gasket or the long ear to deform and twist and fall out of the slot. Summary of the Invention

[0005] Based on this, it is necessary to provide a double-ear stop gasket fixing device that can meet the clamping requirements of gaskets of different specifications, so as to improve the defects of low adaptability and poor practicality of the double-ear stop gasket fixing tool in the related technology, in which the double-ear stop gasket fixing tool cannot meet the clamping requirements of gaskets of different specifications, and cannot accommodate the gasket again after use or cannot fix the gasket.

[0006] A double-ear stop gasket fixing device is used to fix the double-ear stop gasket in a flange connection assembly, wherein the flange connection assembly includes two flanges connected by bolts, and the double-ear stop gasket is arranged between the nuts of the bolts and the flanges. The double-ear stop gasket fixing device includes:

[0007] A clamping assembly, the clamping assembly comprising a first clamping piece and a second clamping piece arranged opposite to each other;

[0008] A support assembly, the support assembly including a clip mounting portion, the clip mounting portion being provided with an accommodating cavity, the first clip and the second clip being slidably fitted to side walls of the accommodating cavity, the clip mounting portion being provided with a plurality of supporting surfaces for abutting against the flange;

[0009] A driving mechanism is used to drive the second clamp to move toward or away from the first clamp to clamp or release the double-ear stop gasket.

[0010] In one embodiment, the driving mechanism includes a tightening member and a driving member, the tightening member is transmission-connected between the second clip and the clip mounting portion, and the driving member drives the tightening member to reciprocate in the clip mounting portion.

[0011] In one embodiment, the clip mounting portion includes a movable portion, the accommodating cavity is formed in the movable portion, a first guide groove and a second guide groove are relatively arranged on the side walls of the accommodating cavity, and guide sliders are provided at both ends of the first clip and the second clip, and the guide sliders are slidably connected to the first guide groove and the second guide groove.

[0012] In one embodiment, the clip mounting portion further includes a plug-in portion connected to the movable portion, the plug-in portion is arranged on the side of the second clip facing away from the first clip, a hydraulic oil chamber is provided inside the plug-in portion, the tightening member is arranged in the hydraulic oil chamber, and the driving member is used to drive the tightening member to reciprocate in the hydraulic oil chamber to push the second clip to move toward or away from the first clip.

[0013] In one embodiment, the driving member includes a hydraulic pipe, a hydraulic cylinder and a pressure handle, the two ends of the hydraulic pipe are respectively connected to the hydraulic oil chamber and the hydraulic cylinder, and a pressure column is provided on the pressure handle, and the pressure column is connected to the hydraulic cylinder to apply pressure to the inside of the hydraulic cylinder.

[0014] In one embodiment, the driving member further includes a controllable one-way valve, which includes a one-way valve body and a pressure relief button arranged on the one-way valve body. The one-way valve body is arranged on the hydraulic pipe and is connected to the hydraulic pipe.

[0015] In one embodiment, the double-ear stop washer fixing device further includes a connecting mechanism, and the connecting mechanism is configured to detachably connect the driving mechanism to an external open-end wrench for fixing a nut.

[0016] In one embodiment, the connecting mechanism includes a support frame, a clamping block and an adjusting screw, the adjusting screw is mounted on the support frame, the clamping block includes a first clamping block and a second clamping block arranged opposite to each other on the support frame, the first clamping block and the second clamping block are threadedly connected to the adjusting screw, and the adjusting screw is used to drive the first clamping block and the second clamping block to move toward or away from each other on the support frame to clamp or release the open-end wrench.

[0017] In one embodiment, sliding grooves are relatively provided on the support frame, and the first clamping block and the second clamping block each include a threaded sliding block and a clamping pliers connected to the threaded sliding block, each sliding groove slides with a corresponding threaded sliding block, and the two relatively arranged clamping pliers connect the driving mechanism to the open-end wrench in a detachable manner, and the threaded sliding block includes a threaded through hole threadedly connected to the adjusting screw, and a limiting portion is provided in the middle of the adjusting screw, and the adjusting screws on both sides of the limiting portion are provided with left-handed threads and right-handed threads in different directions to drive the threaded sliding blocks of the first clamping block and the second clamping block to move toward or away from each other along the adjusting screw.

[0018] In one embodiment, the support assembly further includes an adjusting screw, which is threadedly connected to the clip mounting portion, the first clip is disposed above the second clip, and the adjusting screw is connected to the first clip.

[0019] The above-mentioned double-ear stop gasket fixing device is provided with a clamping assembly, wherein the clamping assembly includes a first clip and a second clip arranged opposite each other, and the first clip and the second clip are clamped close to each other to meet the clamping requirements of double-ear stop gaskets of different specifications; and a support assembly is provided, wherein the support assembly includes a clip mounting portion, the clip mounting portion defines a receiving cavity for accommodating the clamping assembly, and the first clip and the second clip are slidably engaged with the sidewalls of the receiving cavity. The second clip is driven by a driving mechanism, so that the second clip can move toward or away from the first clip, thereby adjusting the distance between the first clip and the second clip to achieve the purpose of clamping or releasing the long ear end of the double-ear stop gasket. When the sleeve adjusts the nut on one side of the flange, in order to prevent the double-ear stop gasket from rotating with the nut, a support surface is provided on the contact surface of the clip mounting portion and the flange. Since the support surface abuts the flange, it can further block the rotation of the clip mounting portion, thereby achieving the relative fixation of the double-ear stop gasket. In addition, after use, the gasket can be flattened and continued to be used, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram showing the actual use of the double-ear stop gasket fixing device in conjunction with the flange;

[0021] Figure 2This is a diagram showing the use of a double-ear stop washer fixing device in conjunction with an open-end wrench;

[0022] Figure 3 A three-dimensional diagram of a double-ear stop washer fixing device (with the driving mechanism omitted);

[0023] Figure 4 This is a structural diagram of the clip installation portion of the double-ear stop washer fixing device;

[0024] Figure 5 Detailed view of the connection mechanism of the double-ear stop washer fixing device connecting the drive mechanism to the open-end wrench;

[0025] Figure 6 A structural diagram of the second clip of the double-ear stop gasket fixing device;

[0026] Figure 7 This is a structural diagram of the adjusting screw of the double-ear stop washer fixing device;

[0027] Figure 8 This is an exploded diagram of the structure of the connection mechanism of the double-ear stop gasket fixing device. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] In mechanical engineering applications, when a pair of flanges 100 in a flange connection assembly are butt-jointed, they are connected by disposing multiple sets of bolts along the circumference of the flanges 100. Nuts are positioned on the upper and lower sides of each set of bolts, and a double-ear stop washer 110 is positioned between each nut and the flange 100. The double-ear stop washer 110 includes a long ear and a short ear. Tightening the nuts requires the use of tools such as a socket 120 and an open-end wrench 130. While the socket 120 tightens the nut, the open-end wrench 130 is used to secure the nut on the other side of the flange 100 to prevent it from rotating. The opposing flanges 100 are then connected by tightening the bolts.

[0035] See Figure 2 、 Figure 3 and Figure 4 One embodiment of the present invention provides a double-ear stop washer fixing device for preventing a double-ear stop washer 110 from rotating. The fixing device includes a clamping assembly 1, a support assembly 2, and a drive mechanism 3. The clamping assembly 1 includes a first clip 11 and a second clip 12 disposed opposite each other, forming a clamping space between the first clip 11 and the second clip 12 for clamping the double-ear stop washer 110. The support assembly 2 includes a clip mounting portion 21, which is provided with a receiving cavity 2111. The first clip 11 and the second clip 12 are respectively slidably engaged with the sidewalls of the receiving cavity 2111. The clip mounting portion 21 is provided with a plurality of supporting surfaces 213 for abutting against the flange 100. When the plurality of supporting surfaces 213 abut against the flange 100, the movement of the clip mounting portion 21 is restricted, thereby restricting the rotation of the clamping assembly 1. The drive mechanism 3 is used to drive the second clip 12 to move toward or away from the first clip 11 to clamp or release the double-ear stop washer 110.

[0036] Its specific working principle is as follows:

[0037] Further integration Figure 1 The actual on-site installation process of the double-ear stop washer 110 and the double-ear stop washer fixing device of the present invention is as follows: first, the driving mechanism 3 is installed on the open-end wrench 130 to complete the connection between the device and the open-end wrench 130; when the device and the open-end wrench 130 are connected as one, the long ear end of the double-ear stop washer 110 enters the action area of ​​the clamping assembly 1, and the long ear end of the double-ear stop washer 110 is clamped, and then the open groove of the open-end wrench 130 is aligned and inserted into the nut to complete the installation operation of the entire device; secondly, the sleeve 120 is used to tighten the nut while keeping the open-end wrench 130 stable. The long ear end of the double-ear stop washer 110 can maintain a relative position unchanged under the limit of the clamping assembly 1, thereby avoiding the displacement of the double-ear stop washer 110 during the tightening process of the nut, which requires repeated adjustment.

[0038] In addition to fixing the gasket, the clamping assembly 1 also has the function of flattening the old gasket. Usually, a new gasket will be deformed after being tightened and used once. When reinstalling the old gasket, the deformed gasket needs to be knocked flat first. This operation requires the use of other tools, which is very inconvenient. Using this device, the flattening operation can be completed more conveniently through the clamping assembly 1, and the old gasket can be reused, thereby improving the practicality of the double-ear stop gasket fixing device.

[0039] The double-ear stop gasket fixing device in this embodiment is provided by setting a clamping component 1, wherein the clamping component 1 includes a first clip 11 and a second clip 12 arranged opposite to each other, and the first clip 11 and the second clip 12 are clamped close to each other, which can meet the clamping requirements of double-ear stop gaskets 110 of different specifications; a support component 2 is provided, wherein the support component 2 includes a clip mounting portion 21, and the clip mounting portion 21 is provided with a accommodating cavity 2111 for accommodating the clamping component 1, and the first clip 11 and the second clip 12 are slidably fitted with the side wall of the accommodating cavity 2111, and the second clip 12 is driven by the driving mechanism 3 so that the second clip 12 can move toward or away from the first clip 11, thereby adjusting the distance between the first clip 11 and the second clip 12, and achieving the purpose of clamping or releasing the long ear end of the double-ear stop gasket 110. When the sleeve 120 adjusts the nut on one side of the flange 100, in order to prevent the double-ear stop gasket 110 from rotating with the nut, the contact surface between the clip mounting portion 21 and the flange 100 is set to the support surface 213. Since the support surface 213 abuts against the flange 100, it can further prevent the clip mounting portion 21 from rotating, thereby achieving relative fixation of the double-ear stop gasket 110.

[0040] Specifically, after the clamping assembly 1 clamps the gasket, when the torque wrench is used to drive the sleeve 120 to tighten the bolt, the gasket will drive the entire support assembly 2 to rotate in the initial tightening stage. After rotating to a certain angle, since the contact surface between the clip mounting portion 21 and the flange 100 is set to a support surface 213 that can achieve abutment, the purpose of abutment here is to form a mutually opposing force between the support surface 213 and the contact surface of the flange 100. In some embodiments, a plurality of support surfaces 213 can be formed on the clip mounting portion 21 by relatively arranged support arms, and the angles formed between the plurality of support surfaces 213 formed by the support arms are obtuse angles. When the clip mounting portion 21 rotates, the support arm will first contact the side of the flange 100, and a stable torque closed loop will be formed between the flange 100, the double-ear stop gasket 110, and the support surface 213 due to the tightening torque of the bolt, thereby stabilizing the entire fixing device and achieving the anti-twist effect of the gasket.

[0041] It should be noted here that the positional relationship between the first clip 11 and the second clip 12 in the clamping assembly 1 shown in the accompanying drawings is only for the convenience of description, and does not mean that the first clip 11 and the second clip 12 must have a specific positional relationship, that is, the driving mechanism 3 can drive the upper clip or the lower clip, as long as the distance between the first clip 11 and the second clip 12 can be adjusted.

[0042] In some embodiments, the clip mounting portion 21 includes a movable portion 211, in which a receiving cavity 2111 for accommodating the clamping assembly 1 is formed, and a first guide groove 2112 and a second guide groove (not shown in the figure) are relatively arranged on the side walls of the movable portion 211, and guide sliders 111 are provided at both ends of the first clip 11 and the second clip 12, and the guide slider 111 is slidably connected to the first guide groove 2112 and the second guide groove.

[0043] Specifically, the movable part 211 includes a first movable plate 2113 arranged at the top, a second movable plate 2114 and a third movable plate 2115 arranged on both sides of the first movable plate 2113, and a fourth movable plate 2116 connected to the second movable plate 2114 and the third movable plate 2115. The second movable plate 2114 is provided with a first guide groove 2112, and the third movable plate 2115 is provided with a second guide groove. The guide slider 111 is provided as a rectangular protrusion adapted to the first guide groove 2112 and the second guide groove, so that the guide slider 111 can slide back and forth in the first guide groove 2112 and the second guide groove.

[0044] See Figure 2 、 Figure 3 and Figure 5 In some embodiments, the driving mechanism 3 includes a tensioning member 31 and a driving member 32. The tensioning member 31 is transmission-connected between the second clip 12 and the clip mounting portion 21. The driving member 32 is used to drive the tensioning member 31 in the clip mounting portion 21 toward or away from the second clip 12, thereby driving the second clip 12 toward or away from the first clip 11. In this embodiment, the driving method of the driving member 32 is not limited to hydraulic drive, and also includes pneumatic drive, motor drive, mechanical drive, etc., and it is sufficient to drive the tensioning member 31 to reciprocate in the clip mounting portion 21.

[0045] See Figure 4 and Figure 5In some embodiments, the clip mounting portion 21 further includes a plug-in portion 212 connected to the movable portion 211. The plug-in portion 212 is disposed below the clamping assembly 1. Specifically, the plug-in portion 212 includes a first section 2121 and a second section 2122 and a third section 2123, respectively disposed at opposite ends of the first section 2121. The surfaces of the second section 2122 and the third section 2123 that contact the flange 100 serve as support surfaces 213. A hydraulic oil chamber 2124 for the movement of the jacking member 31 is also disposed within the plug-in portion 212. The driving member 32 drives the jacking member 31 to reciprocate within the hydraulic oil chamber 2124.

[0046] Specifically, the driving member 32 includes a hydraulic tube 321, a hydraulic cylinder 322 and a pressure handle 323. One end of the hydraulic tube 321 is connected to the hydraulic oil chamber 2124, and the other end is connected to the hydraulic cylinder 322. A pressure column 3231 is provided on the pressure handle 323, and the pressure column 3231 is connected to the hydraulic cylinder 322 to apply pressure to the inside of the hydraulic cylinder 322.

[0047] In this embodiment, the pressure handle 323 includes a fixed handle and a movable handle. Holding the pressure handle 323 causes the movable handle to rotate along one end of the fixed handle. A pressure column 3231 is installed at the front section of the movable handle. After rotation, the pressure column 3231 is pushed toward the side of the hydraulic cylinder 322 to apply pressure to the inside of the hydraulic cylinder 322, so that the hydraulic oil pressure in the hydraulic oil chamber 2124 increases, thereby driving the tightening member 31 to move toward the direction of the second clamp 12, and then driving the second clamp 12 to move toward the direction of the first clamp 11.

[0048] In some embodiments, the driving member 32 also includes a controllable one-way valve 33, which includes a one-way valve body 331 and a pressure relief button 332 arranged on the one-way valve body 331. The one-way valve body 331 is arranged on the hydraulic pipe 321 and is connected to the hydraulic pipe 321.

[0049] During the actual tightening process of the bolts, the sleeve 120 needs to be rotated several times before the bolts can be tightened. During this process, the operator needs to continuously exert force to apply pressure to the inside of the hydraulic cylinder 322, which can easily cause fatigue. Therefore, in order to improve the comfort and convenience of operation, a controllable one-way valve 33 is set at the connection between the hydraulic cylinder 322 and the hydraulic pipe 321. This controllable one-way valve 33 only allows the medium in the hydraulic pipe 321 to flow in one direction. In parallel with the shut-off valve, the entire hydraulic drive mechanism can automatically maintain a high-pressure state. When the high-pressure hydraulic oil drives the tightening member 31, the hydraulic oil will remain in the hydraulic pipe 321 outside the one-way valve outlet, thereby providing a continuous and stable driving force for the drive member 32.

[0050] When the bolt tightening work is completed and the pressure needs to be released, the pressure can be released by pressing the pressure relief button 332 on the one-way valve body 331, and the hydraulic oil is sent back to the hydraulic cylinder 322. The driving member 32 no longer drives the second clamp 12. At this time, the first clamp 11 and the second clamp 12 of the clamping assembly 1 are separated.

[0051] In addition, in order to ensure the smooth reset of the second clip 12, a relatively set reset spring 23 is installed between the second clip 12 and the plug-in portion 212. After the clamping operation is completed, the second clip 12 returns to its initial position under the action of the reset spring 23, facilitating the next clamping operation.

[0052] In some embodiments, the hydraulic tube 321 is configured as a pliable tube that is bendable and deformable while maintaining a certain level of support strength. The use of a "pliable" hydraulic tube 321 allows it to support the clamping assembly 1 and support assembly 2 in the front half of the entire device while transporting hydraulic oil. In actual operation, the shape of the hydraulic tube 321 can be adjusted based on the specifications of the flange 100. Specifically, the pliable hydraulic tube 321 can be configured as a hydraulic tube 321 composed of metal wire or metal strips on the inside and a coating on the outside, or a flexible tube such as an aluminum alloy, or other pliable and deformable materials or structures that maintain a certain level of support strength.

[0053] See Figure 5 In some embodiments, the double-ear stop washer fixture further includes a connecting mechanism 4 configured to detachably connect the drive mechanism 3 to the open-end wrench 130. Specifically, detachable connections include snap connections, threaded connections, and key connections. Because the entire fixture needs to be compatible with open-end wrenches 130 of varying sizes, connecting the drive mechanism 3 to the open-end wrench 130 via the connecting mechanism 4 allows simultaneous use of the fixture and the open-end wrench 130, improving the device's applicability and ease of use.

[0054] See Figure 5 、 Figure 7 and Figure 8 In some embodiments, the connecting mechanism 4 includes a support frame 41, a clamping block 42 and an adjusting screw 43. A mounting seat 411 is installed on the support frame 41. The adjusting screw 43 is installed on the support frame 41 through the mounting seat 411, and the mounting seat 411 limits the axial movement of the adjusting screw 43. The clamping block 42 includes a first clamping block 421 and a second clamping block 422 arranged opposite to each other on the support frame 41. The first clamping block 421 and the second clamping block 422 are threadedly connected to the adjusting screw 43. When the adjusting screw 43 is rotated, the first clamping block 421 and the second clamping block 422 are driven to move toward or away from each other on the support frame 41.

[0055] Specifically, the mounting seat 411 engages with the adjusting screw 43 to limit axial movement of the adjusting screw 43. The adjusting screw 43 is provided with threads in different directions. By rotating the adjusting screw 43, the first clamping block 421 and the second clamping block 422 can be moved toward or away from each other on the support frame 41, thereby achieving a detachable connection between the connecting structure and the drive mechanism 3 and the open-end wrench 130.

[0056] See Figure 7 and Figure 8 In some embodiments, sliding grooves 412 are disposed oppositely on the support frame 41. The first clamping block 421 and the second clamping block 422 each include a threaded sliding block 4211 and a clamping pliers 4213 connected to the threaded sliding block 4211. Each sliding groove 412 slidably engages with a corresponding threaded sliding block 4211. The two oppositely disposed clamping pliers 4213 detachably connect the driving mechanism 3 to the open-end wrench 130. The threaded sliding block 4211 includes a threaded through hole 4212 threadedly engaged with the adjusting screw 43. A limiting portion 431 is disposed in the middle of the adjusting screw 43, which cooperates with the mounting seat 411. The adjusting screw 43 on both sides of the limiting portion 431 is provided with left-handed threads 432 and right-handed threads 433 in different directions, thereby driving the threaded sliding blocks 4211 of the first clamping block 421 and the second clamping block 422 to move toward or away from each other along the adjusting screw 43.

[0057] Specifically, the adjusting screw 43 adopts a stepped shaft structure, the middle section of the adjusting screw 43 is set as the optical axis, and limiting parts 431 with a diameter larger than the optical axis are set on both sides of the optical axis. Combined with the mounting frame, the adjusting screw 43 can be fixed relative to the support frame 41 during rotation. In addition, a knob 434 is set at one end of the adjusting screw 43 for easy rotation by the operator.

[0058] The first clamping block 421 and the second clamping block 422 are connected to the adjusting screw 43 through the threaded through hole 4212. The clamping pliers 4213 are clamped to both sides of the open-end wrench 130 through the sliding groove 412 installed on the support frame 41, and anti-slip teeth are provided on the inner side of the clamping pliers 4213. At the same time, in order to enable the first clamping block 421 and the second clamping block 422 to slide stably in the sliding groove 412, a sliding matching block 4214 is provided on the outer side of the clamping pliers 4213. The sliding matching block 4214 includes a horizontally arranged clamping block 4215 and a vertically arranged connecting rib 4216. When the clamping block 42 is installed in the sliding groove 412, the threaded sliding block 4211 and the sliding matching block 4214 respectively abut against the upper and lower opposite sides of the sliding groove 412 of the support frame 41, ensuring that the rotating adjusting screw 43 can drive the clamping block 42 to perform axial movement on the support frame 41.

[0059] See Figure 3In some embodiments, the support assembly 2 further includes an adjusting screw 22 , which is threadedly connected to the clip mounting portion 21 , and the first clip 11 is disposed above the second clip 12 , and the adjusting screw 22 is connected to the first clip 11 .

[0060] Specifically, the adjusting screw 22 is connected to the movable part 211 of the clip mounting part 21, and the lower end of the adjusting screw 22 is connected to the first clip 11. The setting of the adjusting screw 22 can meet the use requirements of gaskets of different specifications. By adjusting the distance of the gap between the clips, it is ensured that the clamping assembly 1 provides sufficient clamping force to the long ear end of the double-ear stop gasket 110.

[0061] See Figure 6 In order to further improve the clamping force of the clamping assembly 1 and prevent the long ear end of the double-ear stop gasket 110 from slipping, a number of anti-slip grooves 121 arranged perpendicularly to each other are evenly provided on the inner side surfaces of the first clamping piece 11 and the second clamping piece 12 facing the long ear end, thereby increasing the friction between the long ear end of the gasket. At the same time, an oblique groove 122 is provided on the side edge facing the long ear end of the double-ear stop gasket 110, which plays a guiding role when aligning the gasket and improves the accuracy of the device operation.

[0062] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A double-ear stop gasket fixing device, used for fixing a double-ear stop gasket (110) in a flange connection assembly, wherein the flange connection assembly comprises two flanges (100) connected by bolts, and the double-ear stop gasket (110) is arranged between the nuts of the bolts and the flanges (100), characterized in that: The double-ear stop gasket fixing device comprises: A clamping assembly (1), the clamping assembly (1) comprising a first clamping piece (11) and a second clamping piece (12) arranged opposite to each other; A support assembly (2), the support assembly (2) comprising a clip mounting portion (21), the clip mounting portion (21) being provided with a receiving cavity (2111), the first clip (11) and the second clip (12) being respectively slidably fitted on side walls of the receiving cavity (2111), and the clip mounting portion (21) being provided with a plurality of supporting surfaces (213) for abutting against a flange (100); A driving mechanism (3), the driving mechanism (3) being used to drive the second clamping piece (12) to move towards or away from the first clamping piece (11) so as to clamp or release the double-ear stop gasket (110); A connecting mechanism (4) is configured to connect the driving mechanism (3) to an external open-end wrench (130) for fixing a nut in a detachable manner.

2. The double-ear stop washer fixing device according to claim 1, characterized in that: The driving mechanism (3) comprises a tensioning member (31) and a driving member (32); the tensioning member (31) is drivingly connected between the second clip (12) and the clip mounting portion (21); and the driving member (32) drives the tensioning member (31) to reciprocate in the clip mounting portion (21).

3. The double-ear stop washer fixing device according to claim 2, characterized in that: The clip mounting portion (21) comprises a movable portion (211), the accommodating cavity (2111) being formed in the movable portion (211), a first guide groove (2112) and a second guide groove being arranged opposite to each other on the side wall of the accommodating cavity (2111), guide sliders (111) being arranged at both ends of the first clip (11) and the second clip (12), and the guide sliders (111) being slidably connected to the first guide groove (2112) and the second guide groove.

4. The double-ear stop washer fixing device according to claim 3, characterized in that: The clip mounting portion (21) further comprises a plug-in portion (212) connected to the movable portion (211); the plug-in portion (212) is arranged on a side of the second clip (12) facing away from the first clip (11); a hydraulic oil chamber (2124) is arranged inside the plug-in portion (212); the pressing member (31) is arranged in the hydraulic oil chamber (2124); the driving member (32) is used to drive the pressing member (31) to reciprocate in the hydraulic oil chamber (2124) so ​​as to push the second clip (12) to move in a direction close to or away from the first clip (11).

5. The double-ear stop washer fixing device according to claim 4, characterized in that: The driving member (32) comprises a hydraulic pipe (321), a hydraulic cylinder (322) and a pressure handle (323); two ends of the hydraulic pipe (321) are respectively connected to the hydraulic oil chamber (2124) and the hydraulic cylinder (322); a pressure column (3231) is provided on the pressure handle (323); the pressure column (3231) is connected to the hydraulic cylinder (322) so as to apply pressure to the inside of the hydraulic cylinder (322).

6. The double-ear stop washer fixing device according to claim 5, characterized in that: The driving member (32) further comprises a controllable one-way valve (33), wherein the controllable one-way valve (33) comprises a one-way valve body (331) and a pressure relief button (332) arranged on the one-way valve body (331), and the one-way valve body (331) is arranged on the hydraulic pipe (321) and is in communication with the hydraulic pipe (321).

7. The double-ear stop washer fixing device according to claim 1, characterized in that: The connecting mechanism (4) comprises a support frame (41), a clamping block (42) and an adjusting screw (43); the adjusting screw (43) is mounted on the support frame (41); the clamping block (42) comprises a first clamping block (421) and a second clamping block (422) which are arranged opposite to each other on the support frame (41); the first clamping block (421) and the second clamping block (422) are threadedly connected to the adjusting screw (43); the adjusting screw (43) is used to drive the first clamping block (421) and the second clamping block (422) to move towards or away from each other on the support frame (41) so as to clamp or release the open-end wrench (130).

8. The double-ear stop washer fixing device according to claim 7, characterized in that: The support frame (41) is provided with sliding grooves (412) opposite to each other. The first clamping block (421) and the second clamping block (422) each include a threaded sliding block (4211) and a clamping pliers (4213) connected to the threaded sliding block (4211). Each of the sliding grooves (412) is slidably matched with a corresponding threaded sliding block (4211). The two clamping pliers (4213) opposite to each other connect the driving mechanism (3) to the open-end wrench (130) in a detachable manner. The threaded sliding block (4211) includes a threaded through hole (4212) threadedly connected to the adjusting screw (43), a limiting portion (431) is arranged in the middle of the adjusting screw (43), and the adjusting screw (43) on both sides of the limiting portion (431) are provided with left-handed threads (432) and right-handed threads (433) with different directions, so as to drive the threaded sliding blocks (4211) of the first clamping block (421) and the second clamping block (422) to move toward or away from each other along the adjusting screw (43).

9. The double-ear stop washer fixing device according to claim 1, characterized in that: The support assembly (2) further comprises an adjusting screw (22), wherein the adjusting screw (22) is threadedly connected to the clip mounting portion (21), the first clip (11) is arranged above the second clip (12), and the adjusting screw (22) is connected to the first clip (11).

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