press fitting tool

Abstract

The application relates to a press-fitting tool which comprises an operating rod, a positioning protrusion arranged on the outer periphery of the operating rod, the positioning protrusion being provided with a mounting groove for mounting a sealing sleeve, the mounting groove having an opening, the axis of the opening being the same as the extension direction of the axis of the operating rod, and a buffer arranged in the mounting groove. The buffer can form buffering and protection for the sealing sleeve, so that the sealing sleeve is prevented from being damaged due to pressure during the mounting process. The sealing sleeve subjected to pressure can be tightly attached to the valve guide pipe, thereby realizing rapid mounting of the sealing sleeve. Moreover, the sealing sleeve is carried and limited by the mounting groove, so that the sealing sleeve can be prevented from shaking and tilting during the mounting process, the sealing sleeve can move along the axial direction of the operating rod following the operating rod, and the cylinder body is prevented from being damaged. The cylinder body is protected, and the mounting time is saved.

Description

Technical Field

[0001] This application relates to the field of special tool technology, and in particular to press-fitting tools. Background Technology

[0002] Large diesel locomotives generally use diesel engines as their power source. A diesel engine is an engine that burns diesel fuel to obtain energy. A typical engine has multiple cylinders. By introducing gas into the cylinders and injecting diesel fuel into them, the diesel fuel is ignited, converting the internal energy of the diesel fuel into mechanical energy to drive the locomotive.

[0003] In related technologies, the 16V-265H diesel engine has 16 cylinders, each with 4 valve guides and a sealing sleeve to ensure the airtightness of the cylinder intake. During locomotive operation, the reciprocating motion of the valves causes the valve guide sealing sleeves to wear easily, requiring replacement after prolonged use.

[0004] However, there are currently no special tools for installing the replaced seal sleeve, which can easily damage the cylinder block and is time-consuming. Utility Model Content

[0005] Based on this, this application provides a press-fitting tool to solve the problems of long installation time and easy damage to the cylinder body in related technologies.

[0006] This application provides a pressing tool, which includes: an operating lever; a positioning protrusion disposed on the outer periphery of the operating lever, the positioning protrusion having a mounting groove for installing a sealing sleeve, the mounting groove having an opening, the axis of the opening being in the same direction as the extension of the axis of the operating lever; and a buffer member disposed within the mounting groove.

[0007] In one embodiment, the pressing tool further includes a counterweight and a contact protrusion, the counterweight, the contact protrusion and the positioning protrusion being arranged sequentially along the axis of the operating rod; the counterweight is sleeved on the outer periphery of the operating rod, the contact protrusion is connected to the operating rod and can move along the axis of the operating rod, and the counterweight can contact the contact protrusion to apply pressure to the operating rod.

[0008] In one embodiment, the operating lever includes a guide rod and a positioning rod, and the contact protrusion includes a connecting sleeve, the outer periphery of which is larger than that of the guide rod; the guide rod and the positioning rod are coaxially arranged and respectively connected to the connecting sleeve, the counterweight is movably sleeved on the guide rod, and the positioning protrusion is arranged on the positioning rod.

[0009] In one embodiment, the guide rod is provided with a limiting protrusion, and the counterweight is located between the limiting protrusion and the connecting sleeve, and the counterweight can be limited and engaged with the limiting protrusion.

[0010] In one embodiment, the guide rod is further provided with a connector for connecting to the tool, the connector being located on the side of the limiting protrusion away from the counterweight.

[0011] In one embodiment, the connecting sleeve is provided with a threaded hole, and the guide rod and the positioning rod are respectively provided with external threads. The external threads of the guide rod and the positioning rod are both threadedly connected to the threaded hole.

[0012] In one embodiment, the guide rod, positioning rod, and connecting sleeve are all made of chrome vanadium steel.

[0013] In one embodiment, the weight is provided with a gripping surface, the size of which first decreases and then increases in the axial direction of the operating lever.

[0014] In one embodiment, the buffer includes a nylon pad.

[0015] In one embodiment, the positioning protrusion includes a positioning sleeve, which is fitted around the outer periphery of the operating lever and connected to the operating lever.

[0016] By applying the technical solution of this application, the sealing sleeve is placed in the mounting groove of the positioning protrusion, so that the sealing sleeve fits against the buffer member in the mounting groove. During installation, pressure is applied to the operating lever, which, through the buffer member, applies pressure to the sealing sleeve. The buffer member provides cushioning and protection for the sealing sleeve, preventing damage due to pressure during installation. The pressurized sealing sleeve fits snugly inside the valve guide, enabling rapid installation. Furthermore, the mounting groove provides support and limitation for the sealing sleeve, preventing it from shaking or tilting during installation. This allows the sealing sleeve to move along the axis of the operating lever, thus avoiding damage to the cylinder block. This achieves cylinder block protection while saving installation time. Attached Figure Description

[0017] Figure 1 A schematic diagram of the pressing tool provided in an embodiment of this application is shown.

[0018] Explanation of reference numerals in the attached figures:

[0019] 10. Operating lever; 11. Guide rod; 111. Limiting protrusion; 112. Connector; 12. Positioning rod; 20. Positioning sleeve; 21. Mounting groove; 40. Counterweight; 41. Grip surface; 50. Connecting sleeve. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0021] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0026] See Figure 1 , Figure 1 A schematic diagram of the pressing tool provided in an embodiment of this application is shown. One embodiment of this application provides a pressing tool including an operating lever 10, a positioning protrusion, and a buffer. The positioning protrusion is disposed on the outer periphery of the operating lever 10 and has a mounting groove 21 for installing a sealing sleeve. The mounting groove 21 has an opening, the axis of which extends in the same direction as the axis of the operating lever 10. The buffer is disposed within the mounting groove 21.

[0027] Applying the technical solution of this application, the sealing sleeve is placed in the mounting groove 21 of the positioning protrusion, so that the sealing sleeve fits against the buffer member in the mounting groove 21. During installation, pressure is applied to the operating lever 10, which, through the buffer member, applies pressure to the sealing sleeve. The buffer member provides cushioning and protection for the sealing sleeve, preventing damage due to pressure during installation. The pressurized sealing sleeve fits snugly against the valve guide, enabling rapid installation. Furthermore, the mounting groove 21 provides support and limits the sealing sleeve, preventing it from shaking or tilting during installation. This allows the sealing sleeve to move along the axis of the operating lever 10, thus avoiding damage to the cylinder block. This achieves cylinder block protection while saving installation time.

[0028] The sealing sleeve in this application is a ring-shaped structure made of metal, which can form a seal for the valve guide. However, since both the sealing sleeve and the cylinder block are made of metal, if the sealing sleeve is misaligned during installation, it can easily interfere with the cylinder block, thereby causing damage. Currently, there is no special tool for replacing valve guide sealing sleeves. If the valve guide sealing sleeve is worn, the cylinder head can be returned to the diesel engine manufacturer for repair. However, disassembling the cylinder head during this process takes a lot of time, and the round-trip transportation also consumes time, resulting in high processing costs.

[0029] During the installation of the sealing sleeve, the axis of the valve guide, the axis of the sealing sleeve, and the axis of the operating rod 10 are collinear. After pressure is applied to the operating rod 10, the pressure can be transmitted along the axial direction, so that the sealing sleeve moves along the axial direction when it moves, and will not cause damage to the cylinder under the limit of the mounting groove 21.

[0030] Specifically, after the sealing sleeve is installed into the mounting groove 21, it fits with the inner wall of the mounting groove 21 with a gap, so that the mounting groove 21 can limit the sealing sleeve and prevent the sealing sleeve from tilting during movement.

[0031] It should be noted that the buffer is made of a material with a certain degree of flexibility, thus forming a buffering effect. After the operating rod 10 applies pressure to the sealing sleeve, the sealing sleeve comes into contact with the buffer, and the buffer can deform to a certain extent. It can also separate the sealing sleeve from the bottom of the mounting groove 21, preventing the sealing sleeve from forming a rigid contact with the positioning protrusion, thereby protecting the sealing sleeve and preventing the sealing sleeve from being damaged during installation.

[0032] In some embodiments, the operation can be performed by directly applying pressure to the operating lever 10, or by using an additional component that transmits pressure to the operating lever 10. The installation of the sealing sleeve is acceptable as long as pressure can be applied to the operating lever 10.

[0033] Since the sealing sleeve is an annular structure, in order to ensure that the positioning protrusion can exert a balanced pressure on the sealing sleeve, both the positioning protrusion and the mounting groove 21 should be annular structures. That is, the positioning protrusion should be an annular protrusion and the mounting groove 21 should be an annular groove.

[0034] Combination Figure 1As shown, the pressing tool also includes a counterweight 40 and a contact protrusion, which are arranged sequentially along the axis of the operating rod 10. The counterweight 40 is sleeved on the outer periphery of the operating rod 10, and the contact protrusion is connected to the operating rod 10 and can move along the axis of the operating rod 10. The counterweight 40 can contact the contact protrusion to apply pressure to the operating rod 10. With the above design, the operator holds the counterweight 40 and moves it along the axis of the operating rod 10, causing the counterweight 40 to abut against the contact protrusion. The kinetic energy generated by the movement of the counterweight 40 is then applied to the contact protrusion to generate pressure. The contact protrusion drives the operating rod 10 to move, and the operating rod 10 drives the sealing sleeve to move through the positioning protrusion, thereby pressing the sealing sleeve into the valve guide.

[0035] It should be noted that the hammer 40 should have a certain weight, that is, when the operator moves the hammer 40, it should be able to generate enough kinetic energy so that the hammer 40 can generate enough pressure when it acts on the contact protrusion.

[0036] In order to ensure that the kinetic energy generated by the weight 40 can be completely and evenly transferred to the contact protrusion, both the weight 40 and the contact protrusion are annular structures.

[0037] In some embodiments, the contact protrusion may be separately provided from the operating lever 10. In other embodiments, the contact protrusion may be integrally formed with the operating lever 10 to facilitate the machining of the operating lever 10.

[0038] Combination Figure 1 As shown, the operating lever 10 is provided with a limiting protrusion 111, and the counterweight 40 is located between the limiting protrusion 111 and the contact protrusion. The counterweight 40 can be limited and engaged with the limiting protrusion 111. The limiting protrusion 111 can limit the counterweight 40 to prevent it from moving too far and coming out of the operating lever 10.

[0039] The limiting protrusion 111 can be integrally formed with the operating lever 10 or it can be provided separately. Since the counterweight 40 is located between the contact protrusion and the limiting protrusion 111, at least one of the contact protrusion and the limiting protrusion 111 should be detachably installed to mount the counterweight 40 onto the operating lever 10. In some embodiments, the contact protrusion and the limiting protrusion 111 can also be installed in a manner where both are detachably connected. In other embodiments, the contact protrusion and the operating lever 10 are integrally formed, and the limiting protrusion 111 is installed in a detachably connected manner. In still other embodiments, the limiting protrusion 111 and the operating lever 10 are integrally formed, and the contact protrusion is installed in a detachably connected manner.

[0040] Combination Figure 1As shown, the operating lever 10 includes a guide rod 11 and a positioning rod 12. The contact protrusion includes a connecting sleeve 50, the outer circumference of which is larger than that of the guide rod 11. The guide rod 11 and the positioning rod 12 are coaxially arranged and connected to the connecting sleeve 50 respectively. The counterweight 40 is movably sleeved on the guide rod 11. A limiting protrusion 111 is provided on the guide rod 11, and a positioning protrusion is provided on the positioning rod 12. With the above design, by separating the operating lever 10 and connecting the guide rod 11 and the positioning rod 12 using the connecting sleeve 50, the counterweight 40 can be sleeved on the guide rod 11.

[0041] Combination Figure 1 As shown, the guide rod 11 is also provided with a connector 112 for connecting to a tool. The connector 112 is located on the side of the limiting protrusion 111 away from the counterweight 40. The tool is connected to the guide rod 11 through the connector 112, so that the tool can drive the guide rod 11 to move relative to the connecting sleeve 50, thereby connecting the guide rod 11 and the positioning rod 12 through the connecting sleeve 50.

[0042] Of course, the guide rod 11 and the positioning rod 12 can also be connected manually. Compared to manual operation, using tools to connect the guide rod 11 and the positioning rod 12 is more convenient, time-saving, and labor-saving.

[0043] When the guide rod 11 and the connecting sleeve 50 are connected by threads, the tool is a power tool or a hand tool capable of rotating the guide rod 11. In some embodiments, the connector 112 has an elliptical cylindrical structure, which allows the guide rod 11 to be rotated using a hand tool. In other embodiments, the connector 112 may have an external hexagonal structure, which can be connected to a power tool.

[0044] Combination Figure 1 As shown, the connecting sleeve 50 is provided with a threaded hole, and the guide rod 11 and the positioning rod 12 are respectively provided with external threads. The external threads of the guide rod 11 and the positioning rod 12 are both threadedly connected to the threaded hole. The use of threaded connection has the advantages of simple structure and easy operation.

[0045] In other embodiments, one of the guide rod 11 and the positioning rod 12 can be threadedly connected to the connecting sleeve 50, while the other of the guide rod 11 and the positioning rod 12 can be connected to the connecting sleeve 50 using other methods. For example, a connecting groove and a connecting protrusion can be used, as long as the connection between the two can be achieved. Of course, during the use of the pressing tool, the stability of the connection between the connecting sleeve 50 and the two can be ensured so that the connecting sleeve 50 does not move.

[0046] Combination Figure 1As shown, the guide rod 11, positioning rod 12, and connecting sleeve 50 are all made of chrome vanadium steel. The use of these materials ensures that the guide rod 11, positioning rod 12, and connecting sleeve 50 all possess good structural strength, resulting in a longer service life for the pressing tool.

[0047] Combination Figure 1 As shown, the weight 40 is provided with a gripping surface 41, the dimension of which first decreases and then increases along the axis of the operating lever 10. With this design, the gripping surface 41 conforms to ergonomic principles, making it easier for the operator to grip the weight 40, thereby increasing the operability of the device.

[0048] Combination Figure 1 As shown, the buffer component includes a nylon gasket. Using a nylon gasket enhances the cushioning and protection during the installation of the sealing sleeve, and has the advantages of easy material availability and low cost.

[0049] Of course, in other embodiments, a buffer material of rubber or other materials can also be used, as long as it can isolate the sealing sleeve from the positioning protrusion and provide a buffering effect for the sealing sleeve.

[0050] Combination Figure 1 As shown, the positioning protrusion includes a positioning sleeve 20, which is sleeved on the outer periphery of the operating rod 10 and connected to the operating rod 10. Using a positioning sleeve 20 as the positioning protrusion has the advantages of simple structure and easy installation.

[0051] In this embodiment, the positioning sleeve 20 is fitted onto the outer periphery of the positioning rod 12. In other embodiments, the positioning sleeve 20 and the positioning rod 12 can also be manufactured as a single piece.

[0052] The pressing tool of this application enables convenient, scientific, and standardized pressing of diesel engine cylinder heads and valve guide seals. Furthermore, the pressing of valve guide seals by this device will not damage the cylinder block, effectively eliminating safety hazards, improving work efficiency, and reducing maintenance costs. The entire process of pressing valve guide seals is fast, safe, reliable, time-saving, labor-saving, and highly precise, achieving the goals of ensuring safety, improving efficiency, and reducing costs.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pressing tool, characterized in that, The pressing tool includes: control lever; A positioning protrusion is provided on the outer periphery of the operating rod. The positioning protrusion is provided with a mounting groove for installing a sealing sleeve. The mounting groove has an opening, and the axis of the opening is in the same direction as the extension of the axis of the operating rod. A buffer element is disposed within the mounting slot.

2. The press tool of claim 1, wherein, The pressing tool further includes a counterweight and a contact protrusion, wherein the counterweight, the contact protrusion, and the positioning protrusion are arranged sequentially along the axis of the operating rod; the counterweight is sleeved on the outer periphery of the operating rod, the contact protrusion is connected to the operating rod and can move along the axis of the operating rod, and the counterweight can contact the contact protrusion to apply pressure to the operating rod.

3. The press tool of claim 2, wherein, The operating lever is provided with a limiting protrusion, and the weight is located between the limiting protrusion and the contact protrusion. The weight can be limited and engaged with the limiting protrusion.

4. The press tool of claim 3, wherein, The operating lever includes a guide rod and a positioning rod. The contact protrusion includes a connecting sleeve, the outer circumferential dimension of which is larger than that of the guide rod. The guide rod and the positioning rod are coaxially arranged and respectively connected to the connecting sleeve. The counterweight is movably sleeved on the guide rod. The limiting protrusion is arranged on the guide rod, and the positioning protrusion is arranged on the positioning rod.

5. The pressing tool according to claim 4, characterized in that, The guide rod is also provided with a connector for connecting to the tool, the connector being located on the side of the limiting protrusion away from the counterweight.

6. The pressing tool according to claim 4, characterized in that, The connecting sleeve is provided with a threaded hole, and the guide rod and the positioning rod are respectively provided with external threads. The external threads of the guide rod and the positioning rod are both threadedly connected to the threaded hole.

7. The press tool of claim 4, wherein, The guide rod, the positioning rod, and the connecting sleeve are all made of chrome vanadium steel.

8. The pressing tool according to any one of claims 2 to 7, characterized in that, The weight is provided with a gripping surface, the dimension of which first decreases and then increases in the axial direction of the operating lever.

9. The press tool of any one of claims 1 to 7, wherein, The cushioning element includes a nylon pad.

10. The pressing tool according to any one of claims 1 to 7, characterized in that, The positioning protrusion includes a positioning sleeve, which is fitted around the outer periphery of the operating rod and connected to the operating rod.

Images