Engine valve spring compressor

Abstract

The utility model relates to an engine valve spring compressor, contain nut, gasket, apron, flange bolt, pedestal, wherein: the pedestal contains screw rod and installation platform, the tail end of screw rod and installation platform fixed connection, the side of installation platform is provided with bolt hole from top to bottom and penetrates, flange bolt passes through bolt hole and fixes the pedestal on the cylinder cover, the apron is the block structure of upper and lower end face parallel, and one screw rod through -hole and three valve rod installation slot are equipped on it, screw rod through -hole and screw rod match, the outside of screw rod through -hole is equipped with gasket slot for placing gasket, valve rod installation slot distribution corresponds with the position of engine valve, nut and gasket and screw rod match and be used for fixing to the pedestal on. The utility model has simplified the operation, reduced the cost, improved the reliability.

Description

Technical Field

[0001] This utility model relates to the field of engine loading and unloading technology, and specifically to an engine valve spring compressor. Background Technology

[0002] Because Dongfeng Cummins' Z8.5 and Z10 series engines use a three-valve design, and the valves of cylinders one, three, and five are arranged in a mirror image with those of cylinders two, four, and six, it is necessary to develop valve spring compressors suitable for Z8.5 and Z10 engines to meet the service channel's maintenance needs for valves, valve springs, and valve locks of Z8.5 and Z10 engines.

[0003] The shortcomings of existing technology are: Existing valve spring compressors require two types of cover plates to compress valve springs in all cylinders, resulting in poor tool versatility and convenience. Utility Model Content

[0004] This utility model addresses the above-mentioned problems by providing an engine valve spring compressor, which aims to simplify operation, reduce costs, and improve reliability.

[0005] To solve the above problems, the technical solution provided by this utility model is as follows: An engine valve spring compressor includes a nut, a washer, a cover plate, flange bolts, and a base, wherein: The base includes a screw and a mounting platform; the end of the screw is threadedly connected to the mounting platform; a bolt hole is provided through one side of the mounting platform from top to bottom; the flange bolt passes through the bolt hole to fix the base to the cylinder head; the cover plate is a block structure with parallel upper and lower end faces, and is provided with a screw through hole, a first valve stem through hole, a second valve stem through hole, and a third valve stem through hole; the screw through hole matches the screw; the outer sides of the upper and lower end faces of the first valve stem through hole are respectively provided with grooves for compressing the exhaust spring; the distribution of the first valve stem through hole, the second valve stem through hole, and the third valve stem through hole corresponds to the position of the engine valve; the nut and the washer match the screw and are used to fix them to the base.

[0006] Preferably, the valve spring compressor is suitable for Dongfeng Cummins Z8.5 and Z10 series engines.

[0007] Preferably, the upper and lower end faces of the cover plate are marked with the direction markings of cylinders 1, 3, 5 and cylinders 2, 4, 6, respectively, for positioning and distinguishing cylinders 1, 3, 5 and cylinders 2, 4, 6.

[0008] Preferably, the cover plate has a triangular cross-section with rounded apex and a thickness of 26 mm; the diameter of the screw through hole is 15.5 mm; the diameters of the first valve stem through hole, the second valve stem through hole, and the third valve stem through hole are all 20 mm; the diameter of the groove is 36 mm and the depth is 9 mm; with the line connecting the centers of the screw through hole and the first valve stem through hole as the horizontal direction, the horizontal distance between the centers of the screw through hole and the first valve stem through hole is 35.59 mm. The horizontal distance between the center of the first valve stem through hole and the center of the second valve stem through hole is 43.5 mm; the vertical distance between the center of the first valve stem through hole and the center of the second valve stem through hole is 34.98 mm; the horizontal distance between the center of the first valve stem through hole and the center of the third valve stem through hole is 71 mm; the vertical distance between the center of the first valve stem through hole and the center of the third valve stem through hole is 9.13 mm; the outer side of the first valve stem through hole has a radius of 19.5 mm; the outer side of the third valve stem through hole has a radius of 14.75 mm.

[0009] Preferably, the screw is 135mm long and has an M14×2-6h thread.

[0010] Preferably, the mounting platform has a thickness of 33.5 mm on one side where the screw is mounted, an outer arc radius of 12.9 mm, and an M14×2-6h threaded through hole. The downward protruding part is a cylindrical structure with a diameter of 25.8 mm. The mounting platform has an outer arc radius of 9.5 mm and a thickness of 23.5 mm on the side where the bolt hole is located. The bolt hole has a diameter of 11 mm. The horizontal distance between the axis of the screw and the axis of the bolt hole is 28.2 mm.

[0011] Preferably, the nut is an M14 nut with a height of 27mm.

[0012] Preferably, the diameters of the small and large circles of the gasket are 30mm and 15mm, respectively, and the thickness is 5mm.

[0013] Preferably, the flange bolts are M10×1.25 hexagonal flange bolts.

[0014] Compared with the prior art, this utility model has the following advantages: 1. Because this utility model adopts a triangular cover plate design, it avoids the interference of the rocker arm seat, and the single-cylinder valve spring can be disassembled and installed without disassembling the rocker arm seat.

[0015] 2. Because this utility model adopts a double-sided adaptable cover plate structure, it can be adapted to two different mirror-shaped valve arrangements on both sides. Attached Figure Description

[0016] Figure 1This is an exploded view of an engine valve spring compressor according to a specific embodiment of the present invention; Figure 2 This is a schematic top view of the cover plate according to a specific embodiment of the present utility model; Figure 3 This is a schematic cross-sectional view of the cover plate according to a specific embodiment of the present utility model; Figure 4 This is a cross-sectional schematic diagram of the mounting platform of the base according to a specific embodiment of the present utility model; Figure 5 This is a top view schematic diagram of the mounting platform of the base according to a specific embodiment of the present utility model; Figure 6 This is a schematic cross-sectional view of the base according to a specific embodiment of the present utility model.

[0017] The components include: 1. Nut, 2. Washer, 3. Cover plate, 4. Flange bolt, 5. Base, 5a. Screw, 5b. Mounting platform, 5b1. Bolt hole, 3a. Screw through hole, 3b. First valve stem through hole, 3c. Second valve stem through hole, 3d. Third valve stem through hole (3d), 3b1. Groove, 3e. Cylinder 1, 3, and 5 direction markings, 3f. Cylinder 2, 4, and 6 direction markings. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0019] This utility model application claims protection for an engine valve spring compressor, comprising a nut 1, a washer 2, a cover plate 3, flange bolts 4, and a base 5, wherein: The base 5 includes a screw 5a and a mounting platform 5b; the end of the screw 5a is threadedly connected to the mounting platform 5b; a bolt hole 5b1 is provided through one side of the mounting platform 5b from top to bottom; a flange bolt 4 passes through the bolt hole 5b1 to fix the base 5 to the cylinder head; the cover plate 3 is a block structure with parallel upper and lower end faces, and is provided with a screw through hole 3a, a first valve stem through hole 3b, a second valve stem through hole 3c, and a third valve stem through hole 3d; the screw through hole 3a matches the screw 5a; the outer sides of the upper and lower end faces of the first valve stem through hole 3b are respectively provided with grooves 3b1 for compressing the exhaust spring; the distribution of the first valve stem through hole 3b, the second valve stem through hole 3c, and the third valve stem through hole 3d corresponds to the position of the engine valves; the nut 1 and the washer 2 match the screw 5a and are used to fix it to the base 5.

[0020] It should be noted that the valve spring compressor is suitable for Dongfeng Cummins Z8.5 and Z10 series engines.

[0021] It should be noted that the upper and lower end faces of the cover plate 3 are marked with the direction markings 3e for cylinders 1, 3, and 5 and 3f for cylinders 2, 4, and 6, respectively, for positioning and distinguishing them.

[0022] In this specific embodiment, the cover plate 3 has a triangular cross-section with rounded apex and a thickness of 26mm; the diameter of the screw through hole 3a is 15.5mm; the diameters of the first valve stem through hole 3b, the second valve stem through hole 3c, and the third valve stem through hole 3d are all 20mm; the diameter of the groove 3b1 is 36mm and the depth is 9mm; with the line connecting the centers of the screw through hole 3a and the first valve stem through hole 3b as the horizontal direction, the horizontal distance between the centers of the screw through hole 3a and the first valve stem through hole 3b is 35.59mm. The horizontal distance between the centers of the first valve stem through hole 3b and the second valve stem through hole 3c is 43.5 mm. The vertical distance between the centers of the first valve stem through hole 3b and the second valve stem through hole 3c is 34.98 mm. The horizontal distance between the centers of the first valve stem through hole 3b and the third valve stem through hole 3d is 71 mm. The vertical distance between the centers of the first valve stem through hole 3b and the third valve stem through hole 3d is 9.13 mm. The outer side of the first valve stem through hole 3b has a radius of 19.5 mm. The outer side of the third valve stem through hole 3d has a radius of 14.75 mm.

[0023] In this specific embodiment, the screw 5a is 135mm long and has an M14×2-6h thread.

[0024] In this specific embodiment, the mounting screw 5a of the mounting platform 5b has a thickness of 33.5mm on one side, an outer arc radius of 12.9mm, and an M14×2-6h threaded through hole. The downward protruding part is a cylindrical structure with a diameter of 25.8mm. The outer arc radius of the bolt hole 5b1 side of the mounting platform 5b is 9.5mm, and the thickness is 23.5mm. The diameter of the bolt hole 5b1 is 11mm. The horizontal distance between the axis of the screw 5a and the axis of the bolt hole 5b1 is 28.2mm.

[0025] In this specific embodiment, nut 1 is an M14 nut with a height of 27mm.

[0026] In this specific embodiment, the diameters of the small and large circles of the gasket 2 are 30mm and 15mm, respectively, and the thickness is 5mm.

[0027] In this specific embodiment, flange bolt 4 is an M10×1.25 hexagonal flange bolt.

[0028] It should be noted that when using the valve spring compressor, first place the cylinder head assembly on the cylinder head fixing device or a clean surface, then fix the base 5 to the injector mounting hole corresponding to the valve to be removed using flange bolts 4; according to the indication marks on the upper and lower sides of the cover plate 3, select the correct side facing up and place it on the valve stem, ensuring that all three valves of the cylinder are aligned with the mounting slots of the cover plate; install the nut 1 and washer 2 on the screw 5a of the base 5 and tighten them to the cover plate 3, use a wrench to turn the nut 1 clockwise, so that the cover plate 3 is slowly pressed down until the valve spring is compressed enough to remove the valve lock clip, thus completing the removal of the valve and valve spring; conversely, the installation of the valve, valve spring and valve lock clip is completed.

[0029] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0030] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0031] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0032] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An engine valve spring compressor, characterized in that: Includes nuts (1), washers (2), cover plates (3), flange bolts (4), and bases (5), wherein: The base (5) includes a screw (5a) and a mounting platform (5b); the end of the screw (5a) is threadedly connected to the mounting platform (5b); a bolt hole (5b1) is provided through one side of the mounting platform (5b) from top to bottom; the flange bolt (4) passes through the bolt hole (5b1) to fix the base (5) to the cylinder head; the cover plate (3) is a block structure with parallel upper and lower end faces, and is provided with a screw through hole (3a), a first valve stem through hole (3b), and a second valve stem through hole (3c). The third valve stem through hole (3d); the screw through hole (3a) matches the screw (5a); the outer sides of the upper and lower end faces of the first valve stem through hole (3b) are respectively provided with grooves (3b1) for compressing the exhaust spring; the distribution of the first valve stem through hole (3b), the second valve stem through hole (3c) and the third valve stem through hole (3d) corresponds to the position of the engine valve; the nut (1) and the washer (2) match the screw (5a) and are used to fix them to the base (5).

2. The engine valve spring compressor according to claim 1, characterized in that: The valve spring compressor is suitable for Dongfeng Cummins Z8.5 and Z10 series engines.

3. The engine valve spring compressor according to claim 2, characterized in that: The upper and lower end faces of the cover plate (3) are marked with the direction markings (3e) for positioning and distinguishing the cylinders 1, 3, 5 from the cylinders 2, 4, 6 and the direction markings (3f) for the cylinders 2, 4, 6.

4. The engine valve spring compressor according to claim 3, characterized in that: The cover plate (3) has a triangular cross-section with rounded apex and a thickness of 26 mm; the screw through hole (3a) has a diameter of 15.5 mm; the first valve stem through hole (3b), the second valve stem through hole (3c), and the third valve stem through hole (3d) all have a diameter of 20 mm; the groove (3b1) has a diameter of 36 mm and a depth of 9 mm; with the line connecting the centers of the screw through hole (3a) and the first valve stem through hole (3b) as the horizontal direction, the horizontal distance between the centers of the screw through hole (3a) and the first valve stem through hole (3b) is 35.59 mm, and the first valve stem through hole (3b1) The horizontal distance between the centers of the first valve stem through hole (3b) and the second valve stem through hole (3c) is 43.5 mm, the vertical distance between the centers of the first valve stem through hole (3b) and the second valve stem through hole (3c) is 34.98 mm, the horizontal distance between the centers of the first valve stem through hole (3b) and the third valve stem through hole (3d) is 71 mm, and the vertical distance between the centers of the first valve stem through hole (3b) and the third valve stem through hole (3d) is 9.13 mm; the outer side of the first valve stem through hole (3b) has a radius of 19.5 mm; the outer side of the third valve stem through hole (3d) has a radius of 14.75 mm.

5. The engine valve spring compressor according to claim 4, characterized in that: The screw (5a) is 135mm long and has an M14×2-6h thread.

6. The engine valve spring compressor according to claim 5, characterized in that: The mounting platform (5b) has a thickness of 33.5 mm on one side of the mounting screw (5a), an outer arc radius of 12.9 mm, and an M14×2-6h threaded through hole. The downward protruding part is a cylindrical structure with a diameter of 25.8 mm. The mounting platform (5b) has an outer arc radius of 9.5 mm and a thickness of 23.5 mm on the side of the bolt hole (5b1). The bolt hole (5b1) has a diameter of 11 mm. The horizontal distance between the axis of the screw (5a) and the axis of the bolt hole (5b1) is 28.2 mm.

7. The engine valve spring compressor according to claim 6, characterized in that: The nut (1) is an M14 nut with a height of 27mm.

8. The engine valve spring compressor according to claim 7, characterized in that: The gasket (2) has diameters of 30mm and 15mm for the small and large circles respectively, and a thickness of 5mm.

9. The engine valve spring compressor according to claim 8, characterized in that: The flange bolt (4) is an M10×1.25 hexagonal flange bolt.

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