Diesel engine cam bearing bush installation tool

Abstract

The utility model discloses a diesel engine cam bearing bush installation tool which comprises a main rod. The first clamping piece is matched with one side of a cam bearing bush in shape and is mounted on the main rod; the second clamping piece is matched with the other side of the cam bearing bush in shape, is movably arranged on the main rod and is matched with the first clamping piece to clamp the cam bearing bush together; the handle is connected to the main rod in a threaded mode and pushes the second clamping piece to move in the axial direction of the main rod. The thrust block is mounted on the first clamping piece; through the first clamping piece, the second clamping piece and the thrust block, the stability of the cam bearing bush during installation can be guaranteed, the cam bearing bush can be pushed in a stable direction, uneven left-right stress caused by pure manual pressing is avoided, the limiting protection effect is achieved in the installation process, and the installation efficiency is improved. And the installation position out-of-tolerance or excessive extrusion damage of the cam bearing bush is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of nuclear power plant emergency diesel engine maintenance, especially a diesel engine camshaft bush installation tool. BACKGROUND

[0002] The diesel engine triggers fuel injection and the opening and closing of the intake and exhaust valves through the camshaft, so the camshaft is an important component for ensuring the normal operation of the diesel engine.

[0003] The camshaft bush and the diesel engine body are in interference fit, and the installation position of the diesel engine camshaft bush is special and has limited space, so it is difficult to install a new camshaft bush, uneven stress can easily damage the outer surface of the camshaft bush, and even the diesel engine body can be damaged. SUMMARY

[0004] The utility model provides a diesel engine camshaft bush installation tool.

[0005] The utility model adopts the technical scheme to solve the technical problems:

[0006] A diesel engine camshaft bush installation tool, comprising:

[0007] A main rod;

[0008] A first clamping piece matched with the shape of one side of the camshaft bush is installed on the main rod;

[0009] A second clamping piece matched with the shape of the other side of the camshaft bush is movably arranged on the main rod and cooperates with the first clamping piece to clamp the camshaft bush;

[0010] A handle is screwed on the main rod and pushes the second clamping piece to move axially along the main rod;

[0011] A thrust block is installed on the first clamping piece.

[0012] Further, in the diesel engine camshaft bush installation tool, preferably, the diesel engine camshaft bush installation tool further comprises a positioning lever vertically inserted into the lubricating oil channel of the diesel engine and extended into the oil hole of the camshaft bush.

[0013] Further, in the diesel engine camshaft bush installation tool, preferably, the first clamping piece and the second clamping piece are respectively in a fan-shaped structure.

[0014] Further, in the diesel engine camshaft bush installation tool, preferably, the first clamping piece comprises a first main body part installed on the main rod and in a fan-shaped structure, and a first boss part outwardly protruding from the fan-shaped edge of the first main body part.

[0015] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the second clamping member comprises a second body part movably arranged on the main rod and in a fan blade structure, and a second boss part arranged outwardly on the edge of the fan blade of the second body part; and the first boss part and the second boss part are arranged oppositely.

[0016] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the outer diameter of the first body part and the second body part is less than or equal to the outer diameter of the camshaft bearing bush, and the outer diameter of the first boss part and the second boss part is less than or equal to the inner diameter of the camshaft bearing bush.

[0017] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the inner edge of the camshaft bearing bush is clamped at the first boss part and the second boss part of the first body part and the second body part.

[0018] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the diesel engine camshaft bearing bush installation tool further comprises an adjusting member installed on the main rod, and the adjusting member and the handle are respectively abutted on both sides of the second clamping member.

[0019] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the diesel engine camshaft bearing bush installation tool further comprises a fixing member installed on the first clamping member, and the thrust block is fixed to the side of the first clamping member away from the second clamping member through the fixing member.

[0020] Further, in the diesel engine camshaft bearing bush installation tool, preferably, the first clamping member and the second clamping member are arranged in parallel.

[0021] The present application has the following beneficial effects: the first clamping member, the second clamping member and the thrust block can ensure the stability of the installation of the camshaft bearing bush, and make the camshaft bearing bush keep a stable direction of advancement, avoid the uneven force caused by manual pressing, and play a limiting protection role in the installation process, and avoid the installation position of the camshaft bearing bush from being out of tolerance or excessively squeezed and damaged. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in combination with the drawings and embodiments, and the drawings are as follows:

[0023] Figure 1 is a sectional view of the diesel engine camshaft bearing bush installation tool in some embodiments of the present application;

[0024] Figure 2 is Figure 1 is an enlarged structure schematic view of the position A shown in the figure;

[0025] Figure 3 isFigure 1 Structure diagram of the first clamping piece shown in the figure;

[0026] Figure 4 is Figure 1 Structure diagram of the first clamping piece shown in the figure;

[0027] Figure 5 is Figure 1 Structure diagram of the second clamping piece shown in the figure.

[0028] Explanation of the reference numerals in the schematic diagram:

[0029] 10, main rod; 20, first clamping piece; 21, first main body part; 22, first boss part; 30, second clamping piece; 31, second main body part; 32, second boss part; 40, handle; 50, thrust block; 60, positioning rod; 70, adjusting piece; 80, fixing piece. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific implementation of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and are not indicative of the device or element indicated must have a particular direction, therefore, it cannot be understood as a limitation of the present application.

[0031] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0033] The technical solution adopted by this utility model to solve its technical problem is:

[0034] like Figures 1 to 3 As shown, some embodiments of this utility model disclose a diesel engine camshaft bearing installation tool. In some embodiments, the diesel engine camshaft bearing installation tool may include: a main rod 10, a first clamping member 20, a second clamping member 30, a handle 40, a thrust block 50, a positioning bar 60, an adjusting member 70, and a fixing member 80.

[0035] The first clamping member 20 is mounted on the main rod 10. The second clamping member 30, used in conjunction with the first clamping member 20 to clamp the camshaft bearing, is movably mounted on the main rod 10. An adjusting member 70 is screwed onto the main rod 10. A handle 40, used to push the second clamping member 30 along the axis of the main rod 10, is screwed onto the main rod 10. The adjusting member 70 and the handle 40 respectively abut against both sides of the second clamping member 30. A thrust block 50 is mounted on the first clamping member 20 via a fixing member 80. During camshaft bearing installation, a positioning bar 60 is vertically inserted into the diesel engine lubrication oil passage and extends into the camshaft bearing oil hole. The first clamping member 20 and the second clamping member 30 ensure the stability of the camshaft bearing during installation and allow it to advance steadily in one direction, avoiding uneven force distribution caused by manual pressing. The thrust block 50 provides limiting protection during installation, preventing the camshaft bearing from being installed out of tolerance or damaged by excessive compression. The positioning bar 60 has a simple and ingenious structure, which facilitates the efficient adjustment of the oil hole position of the camshaft bearing.

[0036] Understandably, the second clamping member 30 is moved by adjusting the handle 40 and the adjusting member 70 so that the camshaft bearing is clamped between the first clamping member 20 and the second clamping member 30. Then, the handle 40 is manually pushed to insert the camshaft bearing into the camshaft bearing mounting seat. Finally, the positioning bar 60 is inserted from the lubrication oil passage of the diesel engine body and aligned with the oil hole on the camshaft bearing. The camshaft bearing is positioned by adjusting the handle 40 and the positioning bar 60 synchronously, thus completing the installation of the camshaft bearing.

[0037] In some embodiments, the outer surface of the main rod 10 may be provided with external threads for mounting the handle 40.

[0038] For reference Figure 4, the first clamping piece 20 in some embodiments can include a first body part 21 on the main rod 10 and a first boss part 22 provided outside the first body part 21. In some embodiments, the center point of the first body part 21 is provided with a through hole, and the first body part 21 is screwed and installed on the main rod 10 through the through hole. In addition, a nut is welded and installed on the first clamping piece 20, and the nut is coaxial with the through hole. The first clamping piece 20 is inserted into the main rod 10 through the through hole, and the main rod 10 is screwed on the nut for fixation. In this way, the damaged parts can be replaced and the cost can be saved.

[0039] In some embodiments, the outer diameter of the first body part 21 is less than or equal to the outer diameter of the cam bushing, and the outer diameter of the first boss part 22 is less than or equal to the inner diameter of the cam bushing. It can be understood that the size of the first body part 21 is smaller than the outer diameter of the cam bushing, so that the first body part 21 can be smoothly inserted into the cam bushing seat when the cam bushing is installed. The first boss part 22 limits the inner wall of the cam bushing to avoid the up and down shaking of the cam bushing.

[0040] As shown in Figure 1 and Figure 5 , the second clamping piece 30 in some embodiments can include a second body part 31 movably provided on the main rod 10 and a second boss part 32 provided outside the second body part 31. The first boss part 22 and the second boss part 32 are oppositely arranged. It can be understood that the center point of the second body part 31 is provided with a socket, and the second body part 31 is sleeved outside the main rod 10 through the socket. The second body part 31 can move along the central axis of the main rod 10. When the second body part 31 moves towards the first body part 21, the first body part 21 and the second fan-shaped second clamping piece 301 clamp and fix the two sides of the cam bushing.

[0041] Continuing to refer to Figure 3 , in some embodiments, the outer diameter of the second body part 31 is less than or equal to the outer diameter of the cam bushing, and the outer diameter of the first boss part 22 and the second boss part 32 is less than or equal to the inner diameter of the cam bushing. It can be understood that the size of the second body part 31 is smaller than the outer diameter of the cam bushing, so that the second body part 31 can be smoothly inserted into the cam bushing seat when the cam bushing is installed. The second boss part 32 limits the inner wall of the cam bushing to avoid the up and down shaking of the cam bushing.

[0042] As shown in Figure 4 and Figure 5 , in some embodiments, the first clamping piece 20 and the second clamping piece 30 respectively have a fan-shaped structure. In other words, the first body part 21 and the second body part 31 respectively have a fan-shaped structure, and the fan-shaped structures leave gaps between them, which do not completely cover the cam bushing seat hole, leaving a certain observation space. The situation of the cam bushing can be observed at all times during the installation operation, so that timely adjustment and intervention can be made.

[0043] The adjusting member 70 is a nut or a cap, which abuts against one side of the second clamping member 30 close to the second clamping member 30. Turning the adjusting member 70 adjusts the position of the main rod 10, and thus the position of the second clamping member 30.

[0044] Referring again to Figure 1 The handle 40 has a hollow structure, and the inner wall of the handle 40 is provided with internal threads. The handle 40 is screwed on the main rod 10 through the internal threads. It can be understood that the handle 40 abuts against the other side of the second clamping member 30, and the handle 40 presses against the second clamping member 30. The handle 40 and the adjusting member 70 clamp and limit the second clamping member 30, thereby fixing the second clamping member 30 on the main rod 10 and allowing the second clamping member 30 to adjust the position on the main rod 10.

[0045] The thrust block 50 is provided with two threaded holes in some embodiments. The fixing member 80 is a bolt, which passes through the first clamping member 20 and is screwed in the threaded hole of the thrust block 50, thereby fixing the thrust block 50 on the first clamping member 20. In some embodiments, three thrust blocks 50 are provided, and the three thrust blocks 50 are respectively installed on the three edges of the first clamping member 20.

[0046] The diesel engine cam bush installation tool will be further described in combination with the use process.

[0047] When the diesel engine cam bush installation tool is used, first, the three sets of thrust blocks 50 are installed and fixed on the three fan blade edges of the first clamping member 20 by the fixing member 80, which plays a limiting protection role in the installation process. The main rod 10 is installed and fixed in the nut welded on the first clamping member 10. One side of the cam bush is installed to the position of the first boss part 21 of the first clamping member 20, ensuring tight cooperation. The adjusting member 70 is installed on the other side of the main rod 10, and the second clamping member 30 is inserted into the main rod 10 from the same side. The position of the adjusting member 70 is adjusted to ensure that when the second clamping member 30 reaches the position of the adjusting member 70, the second boss part 32 of the edge of the second clamping member 30 is just matched and fitted with the cam bush. The handle 40 is inserted into the main rod 10, and the second clamping member 30 is fixed and fitted on the cam bush by adjusting the adjusting member 70 and the handle 40. Thus, the work of installing the cam bush on the tool is completed.

[0048] The assembled tool and the cam bush are aligned with the cam bush mounting seat. By applying force on the operating handle 40, the cam bush is pushed into the cam bush mounting seat. The positioning lever 60 is inserted into the lubricating oil channel of the diesel engine body and aligned with the oil hole on the cam bush. The positioning of the cam bush is realized by synchronous adjustment of the handle 40 and the positioning lever 60, and the installation of the cam bush is completed.

[0049] It can be understood that the above embodiments only express the preferred embodiments of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of modifications and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.

Claims

1. A diesel engine camshaft bearing installation tool characterized by, The diesel engine camshaft bushing installation tool comprises a main rod (10), a first clamping member (20) installed on the main rod (10) and matched with one side of the camshaft bushing, a second clamping member (30) movably installed on the main rod (10) and matched with the first clamping member (20) to jointly clamp the camshaft bushing, a handle (40) screwed on the main rod (10) and used to push the second clamping member (30) to move along the main rod (10) in the axial direction, and a thrust block (50) installed on the first clamping member (20). The diesel engine camshaft bushing installation tool further comprises a positioning rod (60) vertically inserted into the lubricating oil channel of the diesel engine and extended into the oil hole of the camshaft bushing. The first clamping member (20) and the second clamping member (30) are respectively in the shape of a fan blade. The first clamping member (20) comprises a first main body (21) installed on the main rod (10) and in the shape of a fan blade and a first boss (22) outwardly protruding from the edge of the fan blade of the first main body (21). The second clamping member (30) comprises a second main body (31) movably installed on the main rod (10) and in the shape of a fan blade and a second boss (32) outwardly protruding from the edge of the fan blade of the second main body (31), and the first boss (22) is oppositely arranged with the second boss (32). The outer diameters of the first main body (21) and the second main body (31) are less than or equal to the outer diameter of the camshaft bushing, and the outer diameters of the first boss (22) and the second boss (32) are less than or equal to the inner diameter of the camshaft bushing.

2. The diesel engine camshaft bushing installation tool of claim 1, wherein, The inner edge of the camshaft bushing is clamped at the first boss (22) and the second boss (32) of the first main body (21) and the second main body (31).

3. The diesel engine camshaft bushing installation tool of claim 1, wherein, The diesel engine camshaft bushing installation tool further comprises an adjusting member (70) installed on the main rod (10), and the adjusting member (70) and the handle (40) are respectively abutted on the two sides of the second clamping member (30).

4. The diesel engine camshaft bushing installation tool of claim 1, wherein, The diesel engine camshaft bushing installation tool further comprises a fixing member (80) installed on the first clamping member (20), and the thrust block (50) is fixed to the side of the first clamping member (20) away from the second clamping member (30) through the fixing member (80).

5. The diesel engine camshaft bushing installation tool of claim 4, wherein, The first clamping member (20) and the second clamping member (30) are arranged in parallel.

6. The diesel engine camshaft bushing installation tool of claim 5, wherein, ​ 7. The diesel engine camshaft bushing installation tool of claim 6, wherein, ​ 8. The diesel engine camshaft bushing installation tool of claim 1, wherein, ​ 9. The diesel engine camshaft bushing installation tool of claim 1, wherein, ​ 10. The diesel engine camshaft bushing installation tool of claim 1, wherein, ​

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