Blockage pulling device of rubber ring sealing type structure

Abstract

The invention provides a plug pulling device with a rubber ring sealed structure, comprising: a guide assembly comprising a screw and a support nut, the screw is provided with a limiting circular truncated cone, the screw is divided into a waist-shaped screw section and a threaded short rod used for being fixedly connected with a threaded hole of a plug, and the support nut is arranged on the waist-shaped screw section and is in threaded connection with the waist-shaped screw section; the supporting assembly comprises a supporting flat plate, a kidney-shaped hole matched with the kidney-shaped screw rod section is formed in the middle of the supporting flat plate, so that the kidney-shaped screw rod section of the screw rod penetrates through the supporting flat plate, and the supporting flat plate is located between the supporting nut and the limiting circular truncated cone; a plurality of supporting short rods used for providing force application supporting points are evenly fixed to the bottom of the supporting flat plate, and the supporting short rods are perpendicular to the supporting flat plate. According to the plug pulling device, the operation efficiency and the operation safety are improved, the use cost is reduced, and the problems that disassembly and assembly are difficult, a rubber ring is frequently damaged, and personnel are prone to being injured in the current disassembly and assembly process are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engine component disassembly, and particularly relates to a plug extraction device with a rubber ring sealing structure. Background Art

[0002] The rubber ring sealing plug structure is a common sealing structure for aero-engines. This structure is usually selected for the sealing at the position of the engine turning hole. The structure generally has a circular hole at the engine end. The corresponding plug structure is connected to the engine by a circular plug head. An annular groove is provided on the circular circumference, and a rubber ring is installed in the groove. The other end of the plug is an end face, and a threaded hole is provided on the end face.

[0003] The usual disassembly method for this structure is to use a bolt that matches the threaded hole on the plug head. After screwing the bolt into the threaded hole, a pulling force is applied to disassemble it. This uneven force application phenomenon will directly damage the rubber ring on the plug. This method not only causes waste of resources, but also increases a large amount of manpower, and also poses a risk of personal injury. Summary of the Invention

[0004] In view of this, the embodiments of the present application provide a plug extraction device with a rubber ring sealing structure to improve the operation efficiency, improve the operation safety and reduce the use cost. Thus, it replaces the current method of using bolts for disassembly and violent installation, and solves the problems of difficult disassembly and assembly, frequent damage of rubber rings, and easy personal injury that often occur in the current disassembly and assembly process.

[0005] The embodiments of the present application provide the following technical solutions: A plug extraction device with a rubber ring sealing structure, comprising:

[0006] A guiding component, the guiding component includes a screw rod and a supporting nut. A limiting frustum is provided on the screw rod. The limiting frustum divides the screw rod into a waist-shaped screw rod section located above and a threaded short rod located at the bottom for fixedly connecting with the threaded hole of the plug. The waist-shaped screw rod section is a threaded rod with a waist-shaped cross-section. The supporting nut is arranged on the waist-shaped screw rod section and is threadedly connected with the waist-shaped screw rod section;

[0007] A supporting component, the supporting component includes a supporting flat plate. A waist-shaped hole adapted to the waist-shaped screw rod section is opened in the middle of the supporting flat plate to pass the waist-shaped screw rod section of the screw rod through the supporting flat plate, and the supporting flat plate is located between the supporting nut and the limiting frustum; A plurality of supporting short rods for providing force application support points are uniformly fixed at the bottom of the supporting flat plate, and the supporting short rods are perpendicular to the supporting flat plate.

[0008] According to an embodiment of the present application, the device further includes a cylindrical hammer, and a through waist-shaped through hole is provided in the center of the cylindrical hammer so that the waist-shaped screw section of the screw passes through the cylindrical hammer, and the cylindrical hammer is located above the support nut.

[0009] According to an embodiment of the present application, the support nut includes a nut threaded hole in the middle and nut edges uniformly arranged on the outer wall of the nut threaded hole. The upper end surfaces of the nut edges are flush with the upper end surface of the nut threaded hole so that the lower end surface of the cylindrical hammer can be placed flush on the upper surface of the support nut.

[0010] According to an embodiment of the present application, the device further includes a plug cap, and the plug cap is fixedly connected to the top end of the screw for limiting the cylindrical hammer.

[0011] According to an embodiment of the present application, a clearance fit structure is formed between the cylindrical hammer and the waist-shaped screw section of the screw.

[0012] According to an embodiment of the present application, the device further includes a spring, and the spring is arranged on the waist-shaped screw section of the screw and is located between the support flat plate and the limiting frustum.

[0013] According to an embodiment of the present application, the length of the waist-shaped screw section is at least 10 times the length of the threaded short rod.

[0014] According to an embodiment of the present application, a clearance fit structure is formed between the support flat plate and the waist-shaped screw section of the screw.

[0015] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification at least include:

[0016] (1) When the rubber ring sealed plug is in a relatively narrow position, traditional tools cannot be used for normal disassembly and assembly, and during the forced disassembly and assembly process, personnel are prone to injury. When using the tool of the embodiment of the present invention for disassembly and assembly, it is convenient to use, easy to disassemble and assemble, can greatly shorten the disassembly and assembly efficiency, reduce personnel injuries, greatly improve the operation efficiency, and ensure personnel safety.

[0017] (2) Using the embodiment of the present invention can ensure that when the rubber ring sealed plug is slowly vertically pulled out, the rubber ring on the plug is not damaged, reducing material waste and cost; after positioning during installation, the cylindrical hammer of the device can quickly insert the plug into the predetermined position, which is convenient to use and has high efficiency.

[0018] (3) After using the threaded short rod connection in the embodiment of the present invention, since the waist-shaped hole is provided on the support flat plate, the threaded short rod has little influence on the threaded hole on the plug during the upward pulling and installation processes, and the plug is not easily damaged, reducing the replacement of the plug and lowering the cost. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic structural diagram of a plug extraction device with a rubber ring sealing structure according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a cylindrical hammer according to an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a rotating support nut according to an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of a screw rod according to an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a support flat plate according to an embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of a plug according to an embodiment of the present invention;

[0026] Wherein, 1 - plug cap, 2 - cylindrical hammer, 3 - support nut, 4 - screw rod, 5 - support flat plate, 6 - spring, 7 - support short rod, 8 - plug, 21 - waist-shaped through hole a, 22 - knurled hammer surface, 31 - nut threaded hole, 32 - nut edge, 41 - waist-shaped screw rod section, 42 - limiting round table, 43 - threaded short rod, 51 - circular through hole a, 52 - convex platform, 53 - waist-shaped through hole b, 81 - circular through hole b, 82 - plug threaded hole, 83 - rubber ring groove. Detailed Description of the Embodiments

[0027] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] The following describes the implementation modes of the present application through specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0029] As Figures 1 - 6 shown, an unplugging device with a rubber ring sealing structure is provided in an embodiment of the present invention, including:

[0030] A guiding component, the guiding component includes a screw rod 4 and a supporting nut 3. A limiting frustum 42 is arranged on the screw rod 4. The limiting frustum 42 divides the screw rod 4 into a waist-shaped screw rod section 41 located above and a threaded short rod 43 located at the bottom for fixedly connecting with a threaded hole of a plug 8. The waist-shaped screw rod section 41 is a threaded rod with a waist-shaped cross section. The supporting nut 3 is arranged on the waist-shaped screw rod section 41 and is threadedly connected with the waist-shaped screw rod section 41;

[0031] A supporting component, the supporting component includes a supporting flat plate 5. A waist-shaped hole adapted to the waist-shaped screw rod section 41 is opened in the middle of the supporting flat plate 5 to pass the waist-shaped screw rod section 41 of the screw rod 4 through the supporting flat plate 5, and the supporting flat plate 5 is located between the supporting nut 3 and the limiting frustum 42; A plurality of supporting short rods 7 for providing force application support points are uniformly fixed at the bottom of the supporting flat plate 5, and the supporting short rods 7 are perpendicular to the supporting flat plate 5.

[0032] In this embodiment, the upper half of the screw rod 4 is the waist-shaped screw rod section 41. The two sides of the thread are processed by a milling cutter and can smoothly pass through the waist-shaped through hole b 53 on the supporting flat plate 5. The limiting frustum 42 plays a limiting role to prevent the threaded rod from coming out upwards. The threaded short rod 43 is connected with the plug threaded hole 82 on the plug 8. The circular through hole b 81 on the plug 8 is a positioning hole of the plug. The plug threaded hole 82 is used for threaded connection with the threaded short rod 43, and the rubber ring groove 83 is used for placing a rubber ring. Specifically in implementation, the length of the waist-shaped screw rod section 41 is at least 10 times the length of the threaded short rod 43, and the specific dimensions are set according to the situation.

[0033] In some embodiments of the present invention, the device further includes a cylindrical hammer 2. A through waist-shaped through hole a 21 is formed in the center of the cylindrical hammer 2 to allow the waist-shaped screw segment 41 of the screw 4 to pass through the cylindrical hammer 2, and the cylindrical hammer 2 is located above the support nut 3. In this embodiment, the cylindrical hammer 2 is arranged above the support nut 3. The center of the cylindrical hammer 2 is a waist-shaped through hole a 21. A clearance fit structure is provided between the cylindrical hammer 2 and the waist-shaped screw segment 41 of the screw 4, so that the cylindrical hammer 2 can slide smoothly on the waist-shaped screw segment 41. When performing the plug installation, the cylindrical hammer 2 is used to impact the support nut 3 to provide an impulse for the movement of the device, so that the plug 8 enters the plugging port. The outer wall of the cylindrical hammer 2 is a knurled hammer surface 22, which is convenient for hand-held operation.

[0034] In order to enable the cylindrical hammer 2 to better impact the support nut 3, in some embodiments of the present invention, the support nut 3 includes a nut threaded hole 31 in the middle and nut edges 32 uniformly arranged on the outer wall of the nut threaded hole 31. The upper end surface of the nut edge 32 is flush with the upper end surface of the nut threaded hole 31, so that the lower end surface of the cylindrical hammer 2 can be placed flush on the upper surface of the support nut 3.

[0035] In order to prevent the cylindrical hammer 2 from disengaging from the screw 4, in some embodiments of the present invention, the device further includes a plug cap 1. The plug cap 1 is fixedly connected to the top end of the screw 4 and is used to limit the cylindrical hammer 2. The main function of the plug cap 1 is to limit and fix it to the head of the screw 4. Through thread fastening, the cylindrical hammer 2 is prevented from disengaging.

[0036] In some embodiments of the present invention, the device further includes a spring 6. The spring 6 is arranged on the waist-shaped screw segment 41 of the screw 4 and is located between the support flat plate 5 and the limiting frustum 42. Specifically, when implemented, the spring 6 is arranged below the support flat plate 5 and can play a certain buffering role during both extraction and installation. The inner diameter of the spring 6 should be larger than the maximum outer diameter of the waist-shaped screw segment 41, and the number of turns should be no less than 10 turns to ensure the compression amount.

[0037] The support assembly provides a force application support point during the extraction process. For example, during extraction, the support short rod 7 is supported on a stable contact surface around the plug. With one hand holding the support flat plate 5 and the support short rod 7 stationary, the extraction operation is carried out by rotating the support nut 3 with the other hand. Specifically, a clearance fit structure exists between the support flat plate 5 and the waist-shaped screw rod section 41 of the screw rod 4. The position of the circular through-hole a 51 of the support flat plate 5 must be not less than the minimum circumscribed circle radius of the plug 8. If space is limited, it can also be designed according to the external shape structure of the plug 8. The circular through-hole a 51 is positioned and welded to the support short rod 7. A boss 52 is provided on the support flat plate 5 to make the rotation of the support nut 3 more stable and easier to operate. The size of the waist-shaped through-hole b 53 has a clearance fit with the waist-shaped screw rod section 41 and can pass through smoothly. Specifically, the support short rod 7 has a clearance fit with the size of the circular through-hole a 51, and the support short rod 7 is welded to the support flat plate 5.

[0038] When assembling the plug disassembly and assembly device with a rubber ring sealing structure according to an embodiment of the present invention, first install the support short rod 7 on the support flat plate 5, adjust the heights of the 4 support short rods 7, and connect them by welding. After connection, grind and polish to ensure that the heights of the 4 support short rods 7 are the same. First, install the spring 6 at the waist-shaped screw rod section 41 of the screw rod 4, and then install it through the waist-shaped through-hole b 53 of the support flat plate 5. Screw the support nut 3 into connection through the waist-shaped screw rod section 41.

[0039] The disassembly working principle of the embodiment of the present invention is as follows: Before working, ensure that there is no nut on the stud corresponding to the circular through-hole b 81 of the plug 8. Displace the support nut 3 towards the end of the waist-shaped screw rod section 41, and the support flat plate 5 and the support short rod 7 will also displace towards the end of the waist-shaped screw rod section 41. Screw the threaded short rod 43 into the plug threaded hole 82 until it is tightened. Manually move the support flat plate 5 and the support short rod 7 downward to the contact surface (note that the contact surface cannot be on the surface of the plug 8), rotate the support nut 3 until it contacts the support flat plate 5, hold the support flat plate 5 and the support short rod 7 with one hand to keep them stationary, and then rotate the support nut 3. At this time, the screw rod 4 will not rotate, but as the support nut 3 rotates, the screw rod 4 will drive the plug 8 to displace outward until it is removed. The disassembly of the plug is completed.

[0040] The installation working principle of the embodiments of the present invention is as follows: Restore the state after the plug and the device are disassembled. Connect the cylindrical hammer 2 to the waist-shaped screw section 41 through the waist-shaped through hole 21, and finally screw the plug cap 1 onto the top end of the waist-shaped screw section 41. Keep the spring 6 in its natural state, and move the support nut 3 towards the end of the waist-shaped screw section 41 to ensure that the distance between the support nut 3 and the limiting frustum 42 is greater than the distance that the plug 8 needs to move downward (the distance from the end face of the plug to the plugging position). After completing the above work, place the device and the plug at the position to be plugged, align the plug with the plugging port, fix the support flat plate 5 and the support short rod 7 by hand and keep them still. Move the screw rod 4 to confirm that the position of the plug 8 is just above the plugging port. Use the cylindrical hammer 2 to strike the support nut 3. If the plug 8 is displaced, correct it in time. Repeat the strikes (from light to heavy) several times until the plug enters the plugging port. Move the support nut 3 towards the position of the cylindrical hammer 2, and the support flat plate 5 and the support short rod 7 also move in the direction of the support nut 3 until the support flat plate 5 can be rotated. Rotate the support flat plate 5 until the threaded short rod 43 disengages from the plug 8. The installation of the plug 8 is initially completed, and then the nuts on the bolts are restored according to the installation requirements to achieve the goal of tightening the plug.

[0041] The embodiments of the present invention can greatly shorten the disassembly and assembly efficiency, reduce personnel injuries, greatly improve the operation efficiency, and ensure personnel safety. When the rubber ring sealed plug is slowly and vertically pulled out, the rubber ring on the plug is not damaged, reducing material waste and cost; after positioning during installation, the cylindrical hammer of the device can quickly insert the plug into the predetermined position, which is convenient to use and has high efficiency.

[0042] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A plug extraction device with a rubber ring sealing structure, characterized in that, Comprising: A guiding component, the guiding component includes a screw rod and a supporting nut, a limiting frustum is arranged on the screw rod, the limiting frustum divides the screw rod into a waist-shaped screw rod section located above and a threaded short rod located at the bottom for fixedly connecting with a blocked threaded hole, the waist-shaped screw rod section is a threaded rod with a waist-shaped cross section, and the supporting nut is arranged on the waist-shaped screw rod section and is threadedly connected with the waist-shaped screw rod section; A supporting component, the supporting component includes a supporting flat plate, a waist-shaped hole adapted to the waist-shaped screw rod section is opened in the middle of the supporting flat plate to pass the waist-shaped screw rod section of the screw rod through the supporting flat plate, and the supporting flat plate is located between the supporting nut and the limiting frustum; a plurality of supporting short rods for providing force application support points are uniformly fixed at the bottom of the supporting flat plate, and the supporting short rods are perpendicular to the supporting flat plate.

2. The plug extraction device with a rubber ring sealing structure according to claim 1, characterized in that, The device further includes a cylindrical hammer, a through waist-shaped through hole is opened in the center of the cylindrical hammer to pass the waist-shaped screw rod section of the screw rod through the cylindrical hammer, and the cylindrical hammer is located above the supporting nut.

3. The plug extraction device with a rubber ring sealing structure according to claim 2, characterized in that, The supporting nut includes a nut threaded hole in the middle and nut edges uniformly arranged on the outer wall of the nut threaded hole, the upper end surfaces of the nut edges are flush with the upper end surface of the nut threaded hole, so that the lower end surface of the cylindrical hammer can be placed flush on the upper surface of the supporting nut.

4. The plug extraction device with a rubber ring sealing structure according to claim 2, characterized in that, The device further includes a plug cap, the plug cap is fixedly connected to the top end of the screw rod and is used for limiting the cylindrical hammer.

5. The plug extraction device with a rubber ring sealing structure according to claim 2, characterized in that, A clearance fit structure is formed between the cylindrical hammer and the waist-shaped screw rod section of the screw rod.

6. The plug extraction device with a rubber ring sealing structure according to claim 1, characterized in that, The device further includes a spring, the spring is arranged on the waist-shaped screw rod section of the screw rod and is located between the supporting flat plate and the limiting frustum.

7. The plug extraction device with a rubber ring sealing structure according to claim 1, characterized in that, The length of the waist-shaped screw rod section is at least 10 times the length of the threaded short rod.

8. The plug extraction device with a rubber ring sealing structure according to claim 1, characterized in that, A clearance fit structure is formed between the supporting flat plate and the waist-shaped screw rod section of the screw rod.

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