An assembly tool for a segmented camshaft

Abstract

The present invention discloses an assembly tool for a segmented camshaft. The segmented camshaft can be disposed within a cam box, and the cam box has an installation inspection opening. The assembly tool includes a fixing bracket for fixedly connecting to the installation inspection opening, a lateral movement device, a vertical movement device, and a bracket. The lateral movement device is connected to the fixing bracket, and the lateral movement device includes a lateral movement portion configured to be able to move back and forth relative to the fixing bracket. The vertical movement device is disposed on the lateral movement portion, and the vertical movement device includes a vertical movement portion configured to be able to move up and down relative to the lateral movement portion. The bracket is disposed on the vertical movement device, and the bracket is used for loading the shaft segments of the segmented camshaft. According to the assembly tool for the segmented camshaft of the present invention, it is more convenient to install the shaft segments of the segmented camshaft, reduces the space requirement, and can adapt to more scenarios.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and more particularly to an assembly tool for a segmented camshaft. Background Art

[0002] At present, some diesel engine camshafts are of a segmented structure. The outer contour size of the segmented cam is larger than the camshaft bearing hole, so it cannot be assembled through the shaft hole. Generally, when assembling a segmented camshaft, the shaft section is placed on a support frame, and the shaft section is installed in place by hoisting the support frame. This method is only convenient to operate when the assembly site has a large space.

[0003] However, when the diesel engine is installed in a box or a ship's cabin, due to wear of the shaft section cam after the diesel engine has been working for some time, there is a need to replace the camshaft shaft section. However, the operating space in the ship's cabin is narrow, and it is difficult to replace and install by hoisting. Especially when adjusting the correct position of the shaft section, there is a problem that it is inconvenient to rotate the shaft section due to the small space.

[0004] Therefore, an assembly tool for a segmented camshaft is needed to at least partially solve the above problems. Summary of the Invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of the present invention is not intended to attempt to define the key features and essential technical features of the claimed technical solution, nor is it intended to attempt to determine the protection scope of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides an assembly tool for a segmented camshaft, the segmented camshaft can be arranged in a cam box, the cam box has an installation inspection opening, and is characterized by comprising:

[0007] A fixing frame for fixedly connecting to the installation inspection opening;

[0008] A transverse moving device connected to the fixing frame, the transverse moving device includes a transverse moving part configured to be able to move back and forth relative to the fixing frame;

[0009] A vertical moving device arranged on the transverse moving part, the vertical moving device includes a vertical moving part configured to be able to move up and down relative to the transverse moving part; and

[0010] A bracket arranged on the vertical moving device for loading the shaft section of the segmented camshaft.

[0011] The assembly tool for the segmented camshaft according to the present invention can more conveniently and labor - savingly install the shaft segments of the segmented camshaft, reduce the space requirement, and can adapt to more scenarios.

[0012] Further, the lateral movement device further includes:

[0013] A frame having two side beams and two end beams. The two side beams are spaced apart from each other and arranged horizontally. The side beams are connected to the fixed frame. The two end beams are respectively connected between the ends of the two side beams. The lateral movement part is located between the two end beams;

[0014] A first guide rail arranged horizontally between the two end beams. The lateral movement part is sleeved on the first guide rail, and the lateral movement part is configured not to rotate relative to the first guide rail;

[0015] A first driving device. The driving end of the first driving device is connected to the lateral movement part so that the lateral movement part can be movable between the two end beams. Thus, the shaft segment can be conveniently and labor - savingly fed into the cam box horizontally.

[0016] Further, the vertical movement device further includes:

[0017] A limiting part spaced above the lateral movement part. The vertical movement part is located between the limiting part and the lateral movement part;

[0018] A second guide rail vertically connected between the lateral movement part and the limiting part. The vertical movement part is sleeved on the second guide rail, and the vertical movement part is configured not to rotate relative to the second guide rail;

[0019] A second driving device. The driving end of the second driving device is connected to the vertical movement part so that the vertical movement part can be movable between the lateral movement part and the limiting part. Thus, the height of the shaft segment can be conveniently and labor - savingly adjusted.

[0020] Further, the first driving device is configured as a lead screw. The first driving device penetrates the end beam, and one end of the first driving device is rotatably connected to the lateral movement part, and the other end is provided with a first rotating handle. A threaded fit is formed between the first driving device and the end beam. Thus, the lateral movement part can be made to move smoothly horizontally.

[0021] Further, the second driving device is configured as a lead screw, the second driving device penetrates through the limiting portion, one end of the second driving device is connected to the vertical moving portion, and a second rotating handle is provided at the other end. Thus, the vertical moving portion can be enabled to move smoothly in the vertical direction.

[0022] Further, the thread on the first driving device and / or the second driving device is configured as a trapezoidal thread. According to this solution, the lead screw can be self-locked, so that the position of the shaft section can be stable after being adjusted in place.

[0023] Further, the rotational lead of the first driving device and / or the second driving device is 3-4 mm. According to this solution, the position of the shaft section can be adjusted more precisely.

[0024] Further, a thrust bearing or a spherical roller bearing is provided between the first driving device and the lateral moving portion and between the second driving device and the vertical moving portion. Thus, the radial torque generated due to tolerance during the rotation of the lead screw can be eliminated.

[0025] Further, the bracket has a supporting portion, and the supporting portion is recessed downward to form an arc shape so that the bracket can adapt to the shape of the shaft section.

[0026] Further, rolling elements are provided on the supporting portion so that the shaft section can be rotated when the shaft section is installed; and / or

[0027] Reinforcing ribs are connected between the fixing frame and the side beam of the frame. According to this solution, the shaft section can be rotated by using the rolling elements, which facilitates the alignment operation of the bolt holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following drawings of the present invention are used as part of the present invention to understand the present invention. The embodiments of the present invention shown in the drawings and their descriptions are used to explain the principles of the present invention.

[0029] In the drawings:

[0030] Figure 1 is a schematic structural diagram of an assembly tool for a segmented camshaft according to a preferred embodiment of the present invention;

[0031] Figure 2 is Figure 1 a schematic cross-sectional view of the connection between the first driving device and the lateral moving portion in ;

[0032] Figure 3 is a schematic diagram of an assembly tool for a segmented camshaft according to a preferred embodiment of the present invention fixed to a cam box;

[0033] Figure 4Schematic diagram for preparing the installation of the shaft segment of the segmented camshaft onto the assembly tool of the segmented camshaft shown in Figure 3 ;

[0034] Figure 5 Schematic diagram for feeding the shaft segment into the cam box; and

[0035] Figure 6 Schematic diagram for the completion of the assembly of the segmented camshaft.

[0036] Description of the reference numerals:

[0037] 10: Cam box 11: Installation inspection opening 12: Segmented camshaft

[0038] 13: Shaft segment 100: Assembly tool 101: Thrust bearing

[0039] 110: Fixing bracket 111: Reinforcing rib 120: Lateral moving device

[0040] 121: Lateral moving part 122: Frame 123: Side beam

[0041] 124: End beam 125: First guide rail 126: First driving device

[0042] 127: First rotating handle 130: Vertical moving device 131: Vertical moving part

[0043] 132: Limiting part 133: Second guide rail 134: Second driving device

[0044] 135: Second rotating handle 140: Bracket 141: Supporting part

[0045] 142: Rolling element Detailed implementation manners

[0046] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, some well-known technical features are not described to avoid confusion with the present invention.

[0047] In order to thoroughly understand the present invention, a detailed description will be presented in the following description. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concept of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention can also have other implementation manners.

[0048] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0049] As used herein, ordinal numbers such as "first" and "second" are merely identifiers and do not convey any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not inherently imply the existence of a "second component," nor does the term "second component" inherently imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "back," "left," "right," "inner," "outer," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0050] Now, refer to Figures 1 to 6 An exemplary embodiment of the present invention will be described in more detail. The segmented camshaft assembly tool 100 of the preferred embodiment of the present invention is used to assemble the shaft segment 13 of the segmented camshaft 12 into the cam box 10 through the installation inspection port 11 .

[0051] refer to Figure 1 The assembly tool 100 of the segmented camshaft includes a fixing frame 110, a lateral moving device 120, a vertical moving device 130 and a bracket 140. The fixing frame 110 is used to be fixedly connected to the installation inspection port 11. Figure 3 As shown in FIG, the fixing frame 110 is substantially a rectangular frame, which can be fixedly connected to the edge or frame of the installation inspection port 11 by bolts.

[0052] The lateral movement device 120 is connected to the fixed frame 110 and includes a frame 122, a first guide rail 125, a first drive device 126, and a lateral movement portion 121. The frame 122 is connected to the fixed frame 110. In this embodiment, the frame 122 is generally rectangular, with its outer circumference matching the inner circumference of the fixed frame 110 to enable insertion into the fixed frame 110. Preferably, the frame 122 is disposed perpendicularly to the fixed frame 110.

[0053] Specifically, the frame 122 has two side beams 123 and two end beams 124. The two side beams 123 are spaced apart from each other and arranged transversely. Among them, the side beam 123 is connected to the fixed frame 110. The two end beams 124 are respectively connected between the ends of the two side beams 123. In an alternative embodiment, the frame 122 overlaps the bottom edge of the fixed frame 110, and a reinforcing rib 111 is connected between the bottom edge of the fixed frame 110 and the side beam 123 of the frame 122.

[0054] Continue to refer to Figure 1 , the first guide rail 125 is arranged transversely between the two end beams 124 of the frame 122, and the transverse moving part 121 is sleeved on the first guide rail 125. The driving end of the first driving device 126 is connected to the transverse moving part 121 so that the transverse moving part 121 can be movable between the two end beams 124. Among them, the first driving device 126 is preferably configured as a lead screw, which penetrates the end beam 124 of the frame 122 and is connected to the transverse moving part 121. And, a first rotating handle 127 is preferably arranged at the end of the first driving device 126 away from the transverse moving part 121, and a threaded fit is formed between the first driving device 126 and the end beam 124, so that the first driving device 126 can move telescopically relative to the frame 122 when it rotates.

[0055] Moreover, since the first driving device 126 will exert a torsional force on the transverse moving part 121 when it rotates, the transverse moving part 121 is preferably configured not to rotate relative to the first guide rail 125, so that it can smoothly follow the telescopic movement of the first driving device 126, or rather, the transverse moving part 121 can move transversely.

[0056] Exemplarily, the cross-section of the first guide rail 125 can be non-circular, and the hole on the transverse moving part 121 adapted to the first guide rail 125 is also configured as non-circular to adapt to the first guide rail 125. Thus, when the transverse moving part 121 is subjected to a force that makes it tend to rotate, it will not rotate under the obstruction of the shape of the first guide rail 125.

[0057] In this embodiment, two spaced-apart first guide rails 125 are arranged between the two end beams 124. At this time, the cross-sectional shape of the first guide rail 125 can be configured as circular to reduce the frictional resistance. And, under the action of the two first guide rails 125, the transverse moving part will not rotate either.

[0058] The vertical moving device 130 is arranged on the transverse moving part 121 so that the vertical moving part 131 can integrally follow the transverse moving part 121 to move transversely. Among them, the vertical moving device 130 includes a limiting part 132, a second guide rail 133, a vertical moving part 131 and a second driving device 134.

[0059] The limiting part 132 is arranged at intervals above the lateral moving part 121, and the second guide rail 133 is vertically connected between the lateral moving part 121 and the limiting part 132. The vertical moving part 131 is located between the limiting part 132 and the lateral moving part 121 and sleeved on the second guide rail 133. The driving end of the second driving device 134 is connected to the vertical moving part 131 so that the vertical moving part 131 can be movable between the lateral moving part 121 and the limiting part 132.

[0060] Specifically, the second driving device 134 is preferably configured as a lead screw, which penetrates through the limiting part 132 and is connected to the vertical moving part 131. Moreover, a second rotating handle 135 is preferably arranged at the end of the second driving device 134 far from the vertical moving part 131, and a threaded fit is formed between the second driving device 134 and the limiting part 132, so that the second driving device 134 can move vertically relative to the limiting part 132 when rotating.

[0061] Since the second driving device 134 will apply a torsional force to the vertical moving part 131 when rotating, the vertical moving part 131 is preferably configured not to rotate relative to the second guide rail 133 so that it can smoothly follow the vertical movement of the second driving device 134, or move up and down.

[0062] Exemplarily, the cross-section of the second guide rail 133 can be non-circular, and the hole on the vertical moving part 131 adapted to the second guide rail 133 is also configured as non-circular to adapt to the second guide rail 133. Thus, when the vertical moving part 131 is subjected to a force that makes it tend to rotate, it will not rotate under the obstruction of the shape of the second guide rail 133.

[0063] In this embodiment, two second guide rails 133 spaced from each other are arranged between the limiting part 132 and the lateral moving part 121. At this time, the cross-sectional shape of the second guide rail 133 can be configured as circular to reduce the frictional resistance. Moreover, under the action of the two second guide rails 133, the vertical moving part will not rotate either.

[0064] Thus, the horizontal position and height position of the shaft section 13 can be adjusted conveniently and labor-savingly.

[0065] The bracket 140 is arranged on the vertical moving device 130 and is used for loading the shaft section 13 of the segmented camshaft 12. Exemplarily, two brackets 140 are arranged at intervals on the vertical moving device 130 to improve the bearing stability. Moreover, the bracket 140 preferably extends in a direction away from the first rotating handle 127, so that it can enter the cam box 10 under the lateral movement of the lateral moving part 121 and be lifted to a suitable position under the action of the vertical moving part 131.

[0066] Among them, the bracket 140 is provided with a support portion 141. The support portion 141 is recessed downward to form an arc shape so that the bracket 140 can adapt to the shape of the shaft section 13. Or rather, the support portion 141 is configured as the upper surface of the bracket 140. Preferably, rolling elements 142 are provided on the support portion 141 so that the shaft section 13 can be rotated when the shaft section 13 is installed. Exemplarily, grooves can be provided on the support portion 141, and the rolling elements 142 are arranged in the grooves.

[0067] The assembly tool 100 for the segmented camshaft according to the present invention can more conveniently and labor-savingly install the shaft section 13 of the segmented camshaft 12, reduces the space requirement, and can adapt to more scenarios.

[0068] In an alternative embodiment, the lead screw formed by the first driving device 126 and / or the second driving device 134 is selected to be a trapezoidal thread. It is easy to understand that the thread that forms a thread fit with the lead screw is also configured as a trapezoidal thread. Thereby, the lead screw can be self-locked, and further, after the position of the shaft section 13 is adjusted in place, it can be stable, so that there is no need to specifically provide components for limiting or fixing the position.

[0069] For example, when adjusting the height position of the shaft section 13, it is only necessary to stop rotating the second rotating handle 135 after adjusting in place. Under the action of gravity, the mutually cooperating trapezoidal threads will be tightly combined, greatly increasing the frictional force, thereby preventing the reverse rotation of the second driving device, and further achieving self-locking. Therefore, components such as buckles, pins, and baffles for restricting the falling of the vertical moving part can be not provided.

[0070] Moreover, the rotational lead of the lead screw is preferably 3 - 4 mm, whereby the position of the shaft section 13 can be adjusted more precisely.

[0071] In another preferred embodiment, in order to reduce the torsional force of the first driving device 126 and the second driving device 134 on the lateral moving part 121 and the vertical moving part 131 respectively, it is preferred to provide a thrust bearing 101 or a spherical roller bearing at the driving ends of the first driving device 126 and the second driving device 134. That is, a thrust bearing 101 or a spherical roller bearing is provided between the first driving device 126 and the lateral moving part 121. A thrust bearing 101 or a spherical roller bearing is provided between the second driving device 134 and the vertical moving part 131. As Figure 2 shown, a thrust bearing 101 is provided between the first driving device 126 and the lateral moving part 121. Thereby, the radial torque generated due to tolerance during the rotation of the lead screw can be eliminated.

[0072] Next, the installation process of the shaft section 13 will be introduced in conjunction with Figures 3 to 6 to introduce the installation process of the shaft section 13.

[0073] First, as Figure 3As shown, the fixing bracket 110 of the assembling tool 100 is installed at the installation inspection opening 11 of the cam box 10 and fastened with bolts.

[0074] Second, as Figure 4 shown, place the shaft section 13 to be installed on the bracket 140 of the assembling tool 100.

[0075] Third, rotate the first rotating handle 127 so that the shaft section 13 enters the cam box 10 and is located directly below the installation position.

[0076] Fourth, as Figure 5 shown, rotate the second rotating handle 135 so that the position of the shaft section 13 is lifted to the installation position. If there is an error in the horizontal direction at this time, rotate the first rotating handle 127 again for fine adjustment.

[0077] Fifth, use the rolling parts 142 on the bracket 140 to rotate the shaft section 13 in place so that the fixing parts such as the shaft hole, pin hole, positioning pin or screw hole on it are aligned with the connection position on the segmented camshaft 12, and then tighten.

[0078] Sixth, as Figure 6 shown, rotate the second rotating handle 135 in the reverse direction to lower the bracket 140, and then rotate the first rotating handle 127 in the reverse direction to withdraw the bracket 140 from the cam box 10. Then remove the fixing bracket 110 to complete the installation.

[0079] From the above installation process, it can be seen that the assembling tool 100 of the present invention can complete the installation of the shaft section 13 using a relatively small space, and the adjustment of the position of the shaft section 13 is very labor-saving, and it can be applied to various working conditions.

[0080] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0081] The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are only for the purpose of exemplification and illustration, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of protection required by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. An assembly tool for a segmented camshaft, the segmented camshaft being capable of being disposed within a cam box, the cam box having an installation inspection opening, characterized in that, Comprising: A fixing bracket for fixedly connecting to the installation inspection opening; A lateral moving device connected to the fixing bracket, the lateral moving device including a lateral moving part configured to be able to move back and forth relative to the fixing bracket; A vertical moving device provided on the lateral moving part, the vertical moving device including a vertical moving part configured to be able to move up and down relative to the lateral moving part; And A bracket provided on the vertical moving device, the bracket for loading the shaft segment of the segmented camshaft, the bracket having a supporting part provided with rolling members so that when installing the shaft segment, the shaft segment can be rotated in place by using the rolling members, so that the fixing components on the shaft segment are aligned with the connection positions on the segmented camshaft.

2. The assembly tool for the segmented camshaft according to claim 1, characterized in that The lateral moving device further includes: A frame having two side beams and two end beams, the two side beams being spaced apart from each other and arranged horizontally, the side beams being connected to the fixing bracket, the two end beams being respectively connected between the ends of the two side beams, and the lateral moving part being located between the two end beams; A first guide rail arranged horizontally between the two end beams, the lateral moving part being sleeved on the first guide rail, and the lateral moving part being configured not to be rotatable relative to the first guide rail; A first driving device, the driving end of the first driving device being connected to the lateral moving part so that the lateral moving part can be movable between the two end beams.

3. The assembly tool for the segmented camshaft according to claim 2, characterized in that, The vertical moving device further includes: A limiting part spaced above the lateral moving part, the vertical moving part being located between the limiting part and the lateral moving part; A second guide rail vertically connected between the lateral moving part and the limiting part, the vertical moving part being sleeved on the second guide rail, and the vertical moving part being configured not to be rotatable relative to the second guide rail; A second driving device, the driving end of the second driving device being connected to the vertical moving part so that the vertical moving part can be movable between the lateral moving part and the limiting part.

4. The assembling tool for the segmented camshaft according to claim 3, characterized in that, The first driving device is configured as a lead screw, the first driving device penetrates the end beam, and one end of the first driving device is rotatably connected to the lateral moving part, and the other end is provided with a first rotating handle, and a threaded fit is formed between the first driving device and the end beam.

5. The assembly tool for the segmented camshaft according to claim 4, characterized in that, The second driving device is configured as a lead screw, the second driving device penetrates the limiting part, and one end of the second driving device is connected to the vertical moving part, and the other end is provided with a second rotating handle.

6. The assembly tool for the segmented camshaft according to claim 5, characterized in that, The thread on the first driving device and / or the second driving device is configured as a trapezoidal thread.

7. The assembling tool for the segmented camshaft according to claim 5, characterized in that, The rotational lead of the first driving device and / or the second driving device is 3 - 4 mm.

8. The assembling tool for the segmented camshaft according to claim 5, characterized in that, Thrust bearings or spherical roller bearings are provided between the first driving device and the lateral moving part and between the second driving device and the vertical moving part.

9. The assembly tool for the segmented camshaft according to any one of claims 2-8, characterized in that, The supporting part is recessed downward to form an arc shape so that the bracket can adapt to the shape of the shaft section.

10. The assembling tool for the segmented camshaft according to claim 9, wherein Reinforcing ribs are connected between the fixing frame and the side beam of the frame.

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