Cylinder head assembly assembly mechanism

Abstract

The application provides a cylinder head assembly assembling mechanism, which is used for a valve lock press of an engine and comprises a base plate, a slide rod, a slide rod positioning device and a movable valve support, the base plate is used for connecting the valve lock press, the slide rod is positioned on the base plate through the slide rod positioning device, the position of the slide rod is adjusted through the slide rod positioning device, and the movable valve support is installed on the slide rod and can be fixed on the slide rod.

Description

TECHNICAL FIELD

[0001] The present application relates to a cylinder head assembly fixture, in particular to a cylinder head assembly fixture for a valve lock press of an engine. BACKGROUND

[0002] The valve lock press is used to press-fit the spring, lock clip and retainer ring on the valve when the cylinder head assembly (including the cylinder head and the cylinder) of the engine is installed. The cylinder head assembly fixture is used to fix the cylinder head assembly during the press-fit and ensure the alignment of the equipment press head and the valve position.

[0003] The cylinder head assembly fixture applied in the prior art usually weighs dozens of kilograms. When the valve lock press is used in different projects, the accuracy requirement of the cylinder head assembly fixture is high, and therefore the on-site surveying, calculation, debugging and repair need to be performed before the fixture is manufactured, and the continuous period is long. SUMMARY

[0004] An aspect of the present application aims to solve the technical problem of how to overcome the shortcomings of the traditional cylinder head assembly fixture, such as heavy weight, difficult replacement, long manufacturing period, high cost and difficult maintenance and debugging.

[0005] In addition, other aspects of the present application also aim to solve or alleviate other technical problems existing in the prior art.

[0006] The present application provides a cylinder head assembly fixture, in particular, according to an aspect of the present application, there is provided:

[0007] A cylinder head assembly fixture, wherein the cylinder head assembly fixture for a valve lock press of an engine comprises a base plate, a slide rod, a slide rod positioning device and a movable valve support, the base plate is used to connect the valve lock press, the slide rod is positioned on the base plate through the slide rod positioning device, the position of the slide rod is adjusted through the slide rod positioning device, and the movable valve support is installed on the slide rod and can be fixed on the slide rod.

[0008] Optionally, according to an embodiment of the present application, the slide rods include a first slide rod for the intake valve and a second slide rod for the exhaust valve, the first slide rod and the second slide rod are arranged in parallel to each other on the base plate, the slide rod positioning device includes a first slide rod positioning device and a second slide rod positioning device, the first slide rod positioning device includes a first slide rod support column and a first slide rod clamp installed at two ends of the first slide rod respectively, the second slide rod positioning device includes a second slide rod support column and a second slide rod clamp installed at two ends of the second slide rod respectively, the first slide rod can rotate around a first slide rod axis relative to the first slide rod support column and is fixed by the first slide rod clamp when necessary, the second slide rod can rotate around a second slide rod axis relative to the second slide rod support column and is fixed by the second slide rod clamp when necessary.

[0009] Optionally, according to an embodiment of the present application, the movable valve support includes a valve support rod, a valve clamp and a spring, the spring is sleeved on the valve support rod, the valve clamp connects the valve support rod and the slide rod, a groove extending in the axial direction of the slide rod is formed on the first slide rod and the second slide rod, the valve support rod is accommodated in the groove at one end and can slide in the groove, the movable valve support is fixed on the slide rod by the valve clamp when necessary.

[0010] Optionally, according to an embodiment of the present application, four grooves extending in the direction perpendicular to the axial direction of the slide rod in the plane of the base plate are formed on the base plate, which are respectively used for installing the first slide rod support column, the first slide rod clamp, the second slide rod support column and the second slide rod clamp and adjusting the positions of the first slide rod support column, the first slide rod clamp, the second slide rod support column and the second slide rod clamp in the direction perpendicular to the axial direction of the slide rod.

[0011] Optionally, according to an embodiment of the present application, a first pad is installed on the base plate, a positioning pin is installed on the first pad for positioning the base plate and the cylinder head.

[0012] Optionally, according to an embodiment of the present application, a second pad is installed on the base plate, a support column is installed on the second pad for supporting the cylinder head.

[0013] Optionally, according to an embodiment of the present application, a long hole extending in the direction perpendicular to the plane of the base plate is formed on the second pad, the support column is installed in the long hole by a bolt and the height of the support column can be adjusted by the bolt.

[0014] Optionally, according to an embodiment of the present application, when the cylinder head assembly is installed on the engine, the intersection of the axis of the valve support rod of the movable valve support installed on the first slide rod and the axis of the valve support rod of the movable valve support installed on the second slide rod falls on the rotation axis of the valve lock pressing machine.

[0015] The beneficial effects of the present application include: when using the valve locking press in different projects, the cylinder head assembly assembly mechanism does not need to be replaced, only the modular positioning pin needs to be customized. The cylinder head assembly assembly mechanism according to the present application has short production cycle, low cost, easy debugging, and can realize free adjustment of the spacing of the movable valve support, the central axis angle and the rotation center of the assembly mechanism. The components on the cylinder head assembly assembly mechanism according to the present application can be modularly replaced and repaired, and the same set of cylinder head assembly assembly mechanisms can be used for three-cylinder engines and four-cylinder engines. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other features of the present application will become apparent from specific embodiments thereof which are shown by way of example in the accompanying drawings in which,

[0017] Figure 1 A structure diagram of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown;

[0018] Figure 2 A top view of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown,

[0019] Figure 3 A side view of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown,

[0020] Figure 4 A detailed view of a slide bar clamp of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown,

[0021] Figure 5 A detailed view of a movable valve support of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown,

[0022] Figure 6 A detailed view of a cushion block and a positioning pin of a cylinder head assembly assembly mechanism according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] It is easy to understand that, under the condition of not changing the essential spirit of the present application, those skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other according to the technical solution of the present application. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole or regarded as the limitation or restriction of the technical solution of the present application.

[0024] The orientation terms mentioned or possibly mentioned in the present specification, such as up, down, left, right, front, back, front side, back side, top, bottom, etc., are defined with respect to the configuration shown in the drawings, and are relative concepts, so they can be changed accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third" or similar expressions are only used for description and differentiation purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components.

[0025] Reference Figure 1 , which shows a structural schematic diagram of a cylinder head assembly assembly mechanism according to an embodiment of the present application. The cylinder head assembly assembly mechanism is used for a valve locking press of an engine, the valve locking press can press-fit a cylinder head assembly including a cylinder head and a cylinder to the engine, and the cylinder head assembly assembly mechanism can keep the cylinder from falling off the cylinder head and accurately position the cylinder and the cylinder head.

[0026] The cylinder head assembly assembly mechanism according to an embodiment of the present application includes a base plate 1, a slide rod 2, a slide rod positioning device 3, and a movable valve support 4. The base plate 1 is used to connect the valve locking press, and reference Figure 2 , which shows a top view of the cylinder head assembly assembly mechanism according to an embodiment of the present application. A first pad 5 is bolted on the base plate 1, the first pad 5 includes two pads, positioning pin holes are respectively formed on the two pads, and positioning pins 6 are installed in the positioning pin holes for positioning the base plate 1 and the cylinder head. The positioning pins 6 are generally modular positioning pins 6, i.e. positioning pins 6 customized according to the positioning pin holes of different cylinder head assembly assembly mechanisms. For the first pad 5 and the positioning pins 6, please refer to Figure 6 , which shows a detailed view of the pad and the positioning pin of the cylinder head assembly assembly mechanism according to an embodiment of the present application. A second pad 7 is also bolted on the base plate 1, the second pad 7 includes two pads. For the second pad 7, please refer to Figure 3 , which shows a side view of the cylinder head assembly assembly mechanism according to an embodiment of the present application. Long holes extending in a direction perpendicular to the plane of the base plate are respectively formed on the two pads of the second pad 7, support columns 8 are bolted in the long holes and the height of the support columns 8 in the long holes can be adjusted and the support columns 8 are bolted.

[0027] The slide rod 2 is generally configured as a cylindrical rod and is positioned on the base plate 1 by the slide rod positioning device 3. According to the embodiment of the present application, the slide rod positioning device 3 includes a slide rod positioning plate 9 and a slide rod positioning pin 10. The slide rod positioning plate 9 is bolted on the base plate 1, and the slide rod positioning pin 10 is bolted on the slide rod 2. Figure 1In an embodiment of the application, the slide bar 2 is configured as a cylinder at both ends and a cuboid section in the middle for mounting the valve support 4, and a groove extending along the slide bar 2 is configured in the middle section for mounting the movable valve support 4. The slide bar 2 comprises a first slide bar 21 for the intake valve of the cylinder and a second slide bar 22 for the exhaust valve of the cylinder, that is, the movable valve support 4 mounted on the first slide bar 21 supports the intake valve and the movable valve support 4 mounted on the second slide bar 22 supports the exhaust valve. A groove extending along the slide bar axis direction is configured on the first slide bar 21 and the second slide bar 22 for mounting the movable valve support 4. The first slide bar 21 and the second slide bar 22 are arranged in parallel to each other on the base plate. The slide bar positioning device 3 comprises a first slide bar positioning device and a second slide bar positioning device. The first slide bar positioning device comprises a first slide bar support column 31 and a first slide bar clamp 32 mounted on both ends of the first slide bar respectively. The slide bar support column is configured as a column mounted on the base plate by bolts, and a hole or groove is configured on it, in which the slide bar 2 can be put in and rotated. Referring to Figure 4 Fig. 6 shows a detail view of the slide bar clamp of the cylinder head assembly assembly mechanism according to an embodiment of the application, which is configured as two blocks, one of which is mounted on the base plate 1 by bolts, and the other block is connected to it by bolts. When the two blocks are attached to each other, they can enclose a circular hole with a diameter slightly smaller than the cross-sectional diameter of the slide bar. The two blocks are connected to each other by bolts, and when the bolts are not tightened, the slide bar 2 can rotate in the hole enclosed by the two blocks, and when the bolts are tightened, the slide bar 2 is fixed by the two blocks and cannot rotate. The cylindrical surface at both ends of the slide bar 2 can be marked with scales to mark the rotation angle of the slide bar suitable for different valves, so as to quickly adjust the rotation angle of the slide bar 2 when other valves are replaced. Corresponding to the first slide bar positioning device, the second slide bar positioning device comprises a second slide bar support column 33 and a second slide bar clamp 34 mounted on both ends of the second slide bar respectively. Four grooves extending perpendicular to the slide bar axial direction are configured on the base plate plane, and the first slide bar support column 31, the first slide bar clamp 32, the second slide bar support column 33 and the second slide bar clamp 34 are fixed in the grooves by bolts respectively, and their positions in the grooves can be adjusted by bolts, thereby adjusting their positions perpendicular to the slide bar axis direction. In the embodiment according to Figure 1 In the embodiment according to

[0028] Referring to Figure 5 Fig. 7 shows a detail view of the movable valve support 4 of the cylinder head assembly assembly mechanism according to an embodiment of the application. In the embodiment according to Figure 1In the embodiment of the application, the movable valve support 4 comprises a valve support rod 41, a spring 42 and a valve clamp 43. The valve support rod 41 is configured as a cylindrical rod with a flange at one end, the spring 42 can be sleeved on the valve support rod 41 and stopped by the flange. The other end of the valve support rod 41 is inserted into the groove of the slide rod 2 and can slide along the groove of the slide rod 2. The valve clamp 43 is configured as a U-shaped plate, which is clamped on the slide rod 2 and can slide on the slide rod 2 along the slide rod 2. A hole through which the valve support rod 41 can pass is configured on the U-shaped plate. The valve support rod 41 is inserted into the groove of the slide rod 2 through the hole, and the valve support rod 41 is in interference fit with the hole. Threaded holes are opened respectively at the two ends of the U-shaped plate, and bolts are installed in the threaded holes, so that the valve clamp 43 can be fixed on the slide rod 2 by tightening the bolts, so that the positions of the valve support rod 41 and the spring 42 are also fixed. The number of movable valve supports 4 corresponds to the number of valves, and there are usually four movable valve supports 4 for each cylinder, that is, two movable valve supports 4 corresponding to the intake valves and two movable valve supports 4 corresponding to the exhaust valves.

[0029] When the cylinder head assembly is assembled using the cylinder head assembly assembling mechanism according to the application, the assembly steps are as follows:

[0030] First, the distance between each pair of valves on the same side of the cylinder head is measured, and the distance between the movable valve supports 4 on the same slide rod is adjusted by the valve clamp 43 according to the distance, and then the position of the movable valve support 4 is fixed by fixing the valve clamp 43 by the bolts. The positions of the slide rod clamp and the slide rod support column in the groove on the base plate 1 are adjusted to adjust the distance between the opposite movable valve supports 4 installed on different slide rods 2.

[0031] Subsequently, the included angle of the central axis of the movable valve support 4 is adjusted to be consistent with the included angle of the central axes of the two valves by rotating the slide rod 2, then the cylinder head is placed on the cylinder head assembly assembling mechanism, and then the bolts of the valve clamp are tightened to fix the position of the movable valve support 4. At this time, the positions of the slide rod clamp and the slide rod support column can be adjusted again to make the positions of the movable valve supports 4 in the direction perpendicular to the axial direction of the slide rod correspond to the positions of the valves. At this time, it is also necessary to ensure that the intersection of the central axes of the two groups of movable valve supports 4 of the cylinder head assembly assembling mechanism falls on the rotation axis of the valve lock press.

[0032] If the height of the positioning pin 6 used is not suitable for realizing that the intersection of the central axes of the two groups of movable valve supports 4 of the cylinder head assembly assembling mechanism falls on the rotation axis of the valve lock press, shims can be added to the bottom of the slide rod clamp to adjust the height of the slide rod 2 to realize that the intersection of the central axes of the two groups of movable valve supports 4 of the cylinder head assembly assembling mechanism falls on the rotation axis of the valve lock press.

[0033] Finally, the position of the support column 8 in the long hole of the second pad 7 is adjusted to adjust the height of the support column 8, thereby fitting the height of the cylinder head.

[0034] It should be understood that all the above preferred embodiments are exemplary but not restrictive, and various modifications or variations of the above described specific embodiments made by those skilled in the art under the concept of the present application shall be within the legal protection scope of the present application.

Claims

1. A cylinder head assembly assembly mechanism characterized by, The valve locking press for engine cylinder head assembly includes a base plate, a slide bar, a slide bar positioning device and a movable valve support, the base plate is used to connect the valve locking press, the slide bar is positioned on the base plate by the slide bar positioning device, the position of the slide bar is adjusted by the slide bar positioning device, and the movable valve support is installed on the slide bar and can be fixed on the slide bar.

2. The cylinder head assembly installation mechanism according to claim 1, characterized by The slide bar includes a first slide bar for an intake valve and a second slide bar for an exhaust valve, the first slide bar and the second slide bar are arranged in parallel on the base plate, the slide bar positioning device includes a first slide bar positioning device and a second slide bar positioning device, the first slide bar positioning device includes a first slide bar support column and a first slide bar clamp installed at two ends of the first slide bar respectively, the second slide bar positioning device includes a second slide bar support column and a second slide bar clamp installed at two ends of the second slide bar respectively, the first slide bar can rotate around a first slide bar axis relative to the first slide bar support column and be fixed by the first slide bar clamp when necessary, and the second slide bar can rotate around a second slide bar axis relative to the second slide bar support column and be fixed by the second slide bar clamp when necessary.

3. The cylinder head assembly installation mechanism according to claim 2, wherein The movable valve support includes a valve support rod, a valve clamp and a spring, the spring is sleeved on the valve support rod, the valve clamp connects the valve support rod and the slide bar, grooves extending in the axial direction of the slide bar are formed on the first slide bar and the second slide bar, one end of the valve support rod is accommodated in the groove and can slide in the groove, and the movable valve support is fixed on the slide bar by the valve clamp when necessary.

4. The cylinder head assembly installation mechanism of claim 2, wherein Four slots extending in the direction perpendicular to the axial direction of the slide bar in the plane of the base plate are formed on the base plate and are used to install and adjust the positions of the first slide bar support column, the first slide bar clamp, the second slide bar support column and the second slide bar clamp in the direction perpendicular to the axial direction of the slide bar.

5. The cylinder head assembly fitting mechanism according to any one of claims 1 to 4, characterized by, A first pad is installed on the base plate, and a positioning pin is installed on the first pad and used for positioning the base plate and the cylinder head.

6. The cylinder head assembly installation mechanism of claim 5, wherein, A second pad is installed on the base plate, and a support column is installed on the second pad and used for supporting the cylinder head.

7. The cylinder head assembly installation mechanism of claim 6, wherein, A long hole extending in the direction perpendicular to the plane of the base plate is formed on the second pad, the support column is installed in the long hole by a bolt and the height of the support column can be adjusted by the bolt.

8. The cylinder head assembly installation mechanism of claim 3, wherein, When the cylinder head assembly is installed on the engine, the intersection of the axes of the valve support rods of the movable valve supports installed on the first slide bar and the second slide bar falls on the rotation axis of the valve locking press.

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