Dismounting tool for valve seat

Abstract

The dismounting tool comprises a lifting structure, a supporting plate, a clamping ring and a pressing block, and the first end of the lifting structure penetrates through the valve seat; the supporting plate is arranged at the first end of the lifting structure; the clamping ring is arranged on the surface, facing the valve seat, of the supporting plate and comprises at least two sections of pressing rings; the pressing block sleeves the outer side face of the lifting structure, and the side, facing the supporting plate, of the pressing block abuts against the pressing ring. A user stretches the lifting structure provided with the supporting plate into the valve seat, the pressing rings are installed on the supporting plate one by one and combined into the clamping ring, then the pressing block is arranged on the outer side of the lifting structure in a sleeving mode, the clamping ring is pressed by the pressing block, the user lifts the lifting structure upwards, the side wall of an inner cavity of the valve seat and the side face of the pressing block so that the clamping ring can be kept in a ring shape, and the clamping ring jacks up the valve seat. Therefore, the valve seat is detached. The utility model can be widely applied to the technical field of diesel engines.

Description

Technical Field

[0001] This application relates to the technical field of diesel engines, and particularly relates to a disassembly tool for a valve seat. Background Art

[0002] A diesel engine is an internal combustion power device. The valve seat therein is located in the high-temperature and high-pressure combustion chamber of the diesel engine. The valve seat is a key part of the diesel engine and needs to be regularly disassembled, inspected, maintained and serviced. When installing the valve seat, the liquid nitrogen cooling method is used to fix the valve seat in an interference fit manner. When disassembling the valve seat, an external force needs to be applied to take it out. However, due to the lack of special tools and the special structure of the valve seat, it is difficult for workers to apply an external force to the valve seat, resulting in great difficulty in disassembling the valve seat on site. Utility Model Content

[0003] To solve at least one of the above technical problems, this application provides a disassembly tool for a valve seat, and the technical solutions adopted are as follows.

[0004] The disassembly tool for the valve seat provided by this application includes a lifting structure, a support plate, a snap ring and a pressing block. The first end of the lifting structure penetrates through the valve seat; the support plate is arranged at the first end of the lifting structure; the snap ring is arranged on the surface of the support plate facing the valve seat, and the snap ring includes at least two sections of pressure rings; the pressing block is sleeved on the outer side surface of the lifting structure, and one side of the pressing block facing the support plate abuts against the pressure ring; wherein, when the lifting structure moves in the first direction from the first end to the second end along the axial direction of the lifting structure, the pressing block applies pressure to the pressure ring and fixes the snap ring on the surface of the support plate, and the snap ring applies pressure to the valve seat and jacks up the valve seat in the first direction.

[0005] In some embodiments of this application, the surface of the support plate is provided with protrusions or grooves, and the pressure ring is clamped with the surface of the support plate.

[0006] In some embodiments of this application, the pressing block has a conical surface, the conical surface applies pressure to the side surface of the pressure ring facing the center of the snap ring, and the pressure ring has a first pressure surface abutting against the inner side surface of the valve seat and a second pressure surface applying pressure to the end face of the valve seat.

[0007] In some embodiments of this application, the disassembly tool includes a support seat, and the second end of the lifting structure penetrates through the support seat.

[0008] In some embodiments of this application, the support seat includes a sleeve and a cover plate. The cover plate is arranged at one end of the sleeve far away from the support plate, and the second end of the lifting structure passes through the sleeve and penetrates through the cover plate.

[0009] In some embodiments of the present application, the disassembly tooling includes a threaded member and a threaded part. The threaded part is sleeved on the outer side surface of the lifting structure. The threaded member has a threaded hole. The threaded member is supported by the support seat and moves the lifting structure in the first direction in a screw drive manner.

[0010] In some embodiments of the present application, the disassembly tooling includes a second gasket. The second gasket is sleeved on the outer side surface of the lifting structure. The threaded member abuts against the support seat through the second gasket.

[0011] In some embodiments of the present application, the pallet is sleeved on the outer side surface of the lifting structure.

[0012] In some embodiments of the present application, the disassembly tooling includes a first gasket. The first gasket is sleeved on the outer side surface of the lifting structure. The lifting structure is arranged as a bolt. The head of the lifting structure abuts against the pallet through the first gasket.

[0013] In some embodiments of the present application, the pallet and the lifting structure are integrally formed.

[0014] The embodiments of the present application at least have the following beneficial effects: The user inserts the lifting structure with the pallet into the valve seat, installs the pressure rings on the pallet one by one and combines the pressure rings into a snap ring, then sleeves the pressure block on the outer side of the lifting structure, and the pressure block presses the snap ring. The user lifts the lifting structure upward. The inner cavity side wall of the valve seat and the side surface of the pressure block keep the snap ring in a ring shape, and the snap ring jacks up the valve seat, thereby realizing the disassembly of the valve seat. The present application can be widely applied to the technical field of diesel engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The aspects and advantages described and / or appended in the embodiments of the present application will become obvious and easy to understand in conjunction with the following drawings. It should be noted that the embodiments shown in the following drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0016] Figure 1 It is a structural diagram of the disassembly tooling.

[0017] Figure 2 It is a structural diagram of the pallet.

[0018] Figure 3 It is a structural diagram of the pallet.

[0019] Figure 4 It is a structural diagram of the pressure block.

[0020] Figure 5 It is a structural diagram of the snap ring.

[0021] Figure 6 It is a structural diagram of the snap ring in some embodiments of the present application.

[0022] Figure 7 This is the structural diagram of the snap ring in some other embodiments of the present application.

[0023] Reference numerals: 100, lifting structure; 200, pallet; 201, first gasket; 300, snap ring; 301, pressure ring; 400, pressure block; 500, threaded member; 501, second gasket; 601, sleeve; 602, cover plate. Detailed Description of the Invention

[0024] The following will Figure 1 be combined with the appended Figure 7 drawings to describe the embodiments of the present application in detail, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0025] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application 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 construed as a limitation of the present application.

[0026] In the description of the present application, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0027] In the description of the present application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0028] In the description of the present application, descriptions with reference terms such as "as an implementation", "an embodiment", "some examples", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0029] The present application relates to a disassembly tool for a valve seat. The disassembly tool includes a lifting structure 100, a support plate 200, a snap ring 300 and a pressing block 400. The lifting structure 100 is arranged in a long straight rod shape. The first end of the lifting structure 100 penetrates through the valve seat. The support plate 200 is arranged at the first end of the lifting structure 100. The snap ring 300 is arranged on the surface of the support plate 200 facing the valve seat. The pressing block 400 is sleeved on the outer side surface of the lifting structure 100. Further, the snap ring 300 includes at least two pressing rings 301, and the pressing rings 301 are spliced to form the snap ring 300. The side of the pressing block 400 facing the support plate 200 abuts against the pressing ring 301.

[0030] The user inserts the first end of the lifting structure 100 with the support plate 200 into the valve seat, arranges the pressing rings 301 on the surface of the support plate 200, combines the pressing rings 301 into the snap ring 300, and then places the pressing block 400 on the support plate 200. When the lifting structure 100 moves in the first direction from the first end to the second end along the axis of the lifting structure 100, the pressing block 400 applies pressure to the pressing ring 301, so that the snap ring 300 is fixed on the surface of the support plate 200, and the snap ring 300 applies pressure to the valve seat to jack up the valve seat in the first direction.

[0031] It should be noted that the support plate 200 is arranged in a circular plate or cylindrical shape, and the outer diameter of the support plate 200 is smaller than the inner diameter of the valve seat, so that the support plate 200 can pass through the inner cavity of the valve seat. The pressing block 400 is arranged in a circular plate or cylindrical shape, and the outer diameter of the pressing block 400 is smaller than the inner diameter of the valve seat, so that the pressing block 400 can be placed into the inner cavity of the valve seat. The outer diameter of the snap ring 300 is larger than the inner diameter of the valve seat, so that after the pressing block 400 shapes the snap ring 300, the snap ring 300 can abut against the lower end face of the valve seat to jack up the valve seat.

[0032] It can be understood that the snap ring 300 is split into at least two pressing rings 301 so that the user can place the pressing rings 301 on the support plate 200 one by one through the inner cavity of the valve seat. Further, the snap ring 300 is equally divided into N pressing rings 301 along its own circumference, where N≥2 and N is an integer, so that each pressing ring 301 is evenly stressed when being pressed by the pressing block 400, improving the structural stability of the snap ring 300.

[0033] In some examples, the snap ring 300 is trisected to obtain three clamping rings 301. Of course, it can be understood that the snap ring 300 can also be equally divided into at least four clamping rings 301.

[0034] As an implementation manner, the ends of adjacent two sections of the clamping rings 301 are clamped with each other, and the ends of adjacent clamping rings 301 are in an uneven embedding relationship, so as to realize the splicing of the clamping rings 301 and improve the structural stability of the snap ring 300.

[0035] Specifically, the end of the clamping ring 301 is provided with a protrusion or a groove. Alternatively, the end of the clamping ring 301 is thinned to form a stepped shape, and the side surfaces of the ends of adjacent two sections of the clamping rings 301 are attached to form an uneven embedding connection form.

[0036] As an implementation manner, the surface of the support plate 200 is provided with a protrusion or a groove. Specifically, the protrusion or the groove is arranged on the surface of the support plate 200 for placing the clamping ring 301, so as to realize the clamping connection between the clamping ring 301 and the surface of the support plate 200. Further, the bottom of the clamping ring 301 is provided with a groove or a protrusion.

[0037] It can be understood that when the user places the clamping rings 301 on the support plate 200 one by one, the clamping rings 301 are clamped with the support plate 200 one by one, thereby improving the installation stability of the snap ring 300 on the support plate 200 and preventing the clamping rings 301 from falling off.

[0038] It should be noted that on the surface of the support plate 200, the protrusion or the groove is formed as an annular protrusion or an annular groove.

[0039] As an implementation manner, the pressing block 400 has a conical surface, and the conical surface applies pressure to the side surface of the clamping ring 301 facing the center of the snap ring 300.

[0040] Specifically, the conical surface is located at one end of the pressing block 400 facing the support plate 200. The conical surface forms an inclined pressure surface on the side surface of the pressing block 400. The end of the pressing block 400 where the conical surface is located extends into the area enclosed by the snap ring 300, and the conical surface abuts against the inner surface of the snap ring 300. Correspondingly, the inner surface of the snap ring 300 is an inclined conical surface.

[0041] In some examples, the conical surface forms a step on the side surface of the pressing block 400, and the stepped surface formed by the conical surface abuts against the upward end surface of the snap ring 300, so that the pressing block 400 applies a downward pressure to the snap ring 300. It can be understood that the stepped surface applies a downward pressure to fix the snap ring 300 to the support plate 200, and the conical surface applies a pressure outward to the snap ring 300 and cooperates with the pressure of the inner cavity side wall of the valve seat on the snap ring 300, so that the snap ring 300 is maintained as a circular ring.

[0042] Further, the pressing ring 301 has a first pressure surface that abuts against the inner surface of the valve seat, and the first pressure surface is an annular surface on the outer surface of the snap ring 300. When the user moves the lifting structure 100 upward in the first direction, the inner cavity surface of the valve seat abuts against the first pressure surface and applies a pressure to the first pressure surface that is directed towards the central axis of the snap ring 300. At the same time, since the tapered surface of the pressing block 400 abuts against the inner surface of the snap ring 300, the pressure of the valve seat on the snap ring 300 is offset. It can be understood that the clamping of the tapered surface of the pressing block 400 and the inner cavity surface of the valve seat on the pressing ring 301 maintains the integrity and stability of the structure of the snap ring 300.

[0043] The pressing ring 301 has a second pressure surface that applies pressure to the end face of the valve seat to lift the valve seat. Specifically, the second pressure surface is an annular surface on the outer surface of the snap ring 300. In some examples, the first pressure surface and the second pressure surface are arranged at an angle on the outer surface of the snap ring 300, forming an L shape, and the first pressure surface and the second pressure surface respectively fit against the inner cavity surface and the end face of the valve seat.

[0044] As an implementation manner, the disassembly tooling includes a support seat, and the second end of the lifting structure 100 penetrates through the support seat. Further, the disassembly tooling includes a threaded member 500, and the threaded member 500 has a threaded hole. The threaded member 500 is sleeved on the outer side surface of the lifting structure 100. The lifting structure 100 is provided with an external thread at least at the second end, and the threaded member 500 is threadedly connected to the second end of the lifting structure 100.

[0045] The threaded member 500 uses the support seat as a support and moves the lifting structure 100 in the first direction in a screw drive manner. When the user rotates the threaded member 500, the lifting structure 100 can be moved upward. It can be understood that the threaded member 500 converts rotation into the movement of the lifting structure 100 and utilizes the support of the support seat. The threaded member 500 applies a sufficient force to the lifting structure 100 by using the thread teeth, and then it is very convenient to apply a force to the valve seat and lift the valve seat.

[0046] In some examples, the threaded member 500 is set as a nut.

[0047] As an implementation manner, the support seat includes a sleeve 601 and a cover plate 602. The sleeve 601 is set in a cylindrical shape, and the cover plate 602 is arranged at one end of the sleeve 601 away from the support plate 200. The second end of the lifting structure 100 passes through the sleeve 601 and passes through the cover plate 602.

[0048] The outer diameter of the cover plate 602 is larger than the inner diameter of the sleeve 601. The cover plate 602 functions to support the threaded member 500, and the end of the sleeve 601 abuts against the cover plate 602.

[0049] Of course, regarding the support base, it can at least be alternatively designed as follows: the support base is set as a support block with a through hole or a support plate with a through hole, and the lifting structure 100 penetrates through the through hole.

[0050] As an implementation manner, the disassembly tooling includes a second gasket 501. The second gasket 501 is sleeved on the outer side surface of the lifting structure 100, and the threaded part 500 abuts against the support base through the second gasket 501.

[0051] Specifically, the second gasket 501 is located between the cover plate 602 and the threaded part 500.

[0052] As an implementation manner, the support plate 200 is sleeved on the outer side surface of the lifting structure 100, and the support plate 200 is detachable in the lifting structure 100. When assembling the disassembly tooling, the lifting structure 100 penetrates through the support plate 200.

[0053] It can be understood that the second end of the lifting structure 100 has a structure that applies force to the surface of the support plate 200, so that when the lifting structure 100 moves upward, the support plate 200 can move upward with the lifting structure 100. In some examples, the lifting structure 100 is set as a bolt, and the head of the lifting structure 100 at the first end applies force to the surface of the support plate 200.

[0054] Furthermore, the disassembly tooling includes a first gasket 201. The first gasket 201 is sleeved on the outer side surface of the lifting structure 100. The first gasket 201 is located between the lower side surface of the support plate 200 and the head of the first end of the lifting structure 100, and the head of the lifting structure 100 abuts against the support plate 200 through the first gasket 201.

[0055] As another alternative implementation manner, the support plate 200 and the lifting structure 100 are integrally formed. Specifically, the support plate 200 is integrally formed at the first end of the lifting structure 100.

[0056] The above has described the implementation manners of the present application in detail with reference to the accompanying drawings. However, the present application is not limited to the above implementation manners. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the purpose of the present application. In addition, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Claims

1. A valve seat disassembly tool, characterized in that: include A lifting structure, wherein a first end of the lifting structure passes through the valve seat; A support plate, the support plate being arranged at the first end of the lifting structure; A clamping ring, the clamping ring is arranged on the surface of the supporting plate facing the valve seat, and the clamping ring includes at least two sections of pressure rings; A pressing block, the pressing block is sleeved on the outer side of the lifting structure, and a side of the pressing block facing the supporting plate abuts against the pressing ring; When the lifting structure moves in a first direction from the first end to the second end along the axis of the lifting structure, the pressure block applies pressure to the pressure ring and fixes the clamping ring to the surface of the support plate, and the clamping ring applies pressure to the valve seat and lifts the valve seat along the first direction.

2. The valve seat disassembly tool according to claim 1, characterized in that: The surface of the support plate is provided with protrusions or grooves, and the pressure ring is clamped with the surface of the support plate.

3. The valve seat disassembly tool according to claim 1, characterized in that: The pressure block has a conical surface which applies pressure to the side of the pressure ring facing the center of the clamping ring. The pressure ring has a first pressure surface which abuts against the inner surface of the valve seat and a second pressure surface which applies pressure to the end surface of the valve seat.

4. The valve seat disassembly tool according to claim 1, characterized in that: The disassembly tool comprises a support seat, and the second end of the lifting structure passes through the support seat.

5. The valve seat disassembly tool according to claim 4, characterized in that: The support seat comprises a sleeve and a cover plate, wherein the cover plate is arranged on an end of the sleeve away from the supporting plate, and the second end of the lifting structure passes through the sleeve and penetrates the cover plate.

6. The valve seat disassembly tool according to claim 4 or 5, characterized in that: The disassembly tool includes a threaded member, which is sleeved on the outer side of the lifting structure. The threaded member has a threaded hole. The threaded member is supported by the support seat and moves the lifting structure along the first direction in a spiral transmission manner.

7. The valve seat disassembly tool according to claim 6, characterized in that: The disassembly tool comprises a second gasket, the second gasket is sleeved on the outer side surface of the lifting structure, and the threaded member abuts against the support seat through the second gasket.

8. The valve seat disassembly tool according to claim 1, 4 or 5, characterized in that: The supporting plate is sleeved on the outer side surface of the lifting structure.

9. The valve seat disassembly tool according to claim 8, characterized in that: The disassembly tool comprises a first gasket, which is sleeved on the outer side of the lifting structure. The lifting structure is configured as a bolt, and the head of the lifting structure abuts against the support plate through the first gasket.

10. The valve seat disassembly tool according to claim 1, characterized in that: The support plate and the lifting structure are integrally formed.

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