Segmented camshaft of oil pump

Abstract

The utility model relates to the technical field of cam shaft structures, in particular to a sectional type cam shaft of an oil pump. According to the technical scheme, the chain wheel comprises a chain wheel head, connecting rings, a cam body, an installation head, a pin groove and a shaft rod, the shaft rod is sequentially and slidably connected with the connecting rings and the cam body in a sleeved mode, the two sides of the cam body are symmetrically and movably connected with the connecting rings in an inserted mode, the two connecting rings are connected through a pin, and the chain wheel head is fixed to one end of the shaft rod. And a mounting head is fixed at the other end of the shaft rod. The cam shaft is produced in a split type assembling mode, the structural combinability of the cam shaft is improved, and the position and the shape of the cam shaft can be flexibly arranged according to the arrangement condition of engine parts.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft structures, in particular to a segmented camshaft for an oil pump. Background Art

[0002] When the mechanical oil pump is working, the camshaft transmits the circular motion of the crankshaft through the tappets, rocker arms and other components, converting it into linear movement of the intake and exhaust valve stems, thereby accurately and timely controlling the opening and closing of the intake and exhaust valves; it also transmits it through the injection pump roller, tappets and other components, thereby accurately and timely controlling the opening and closing of the injector needle valve.

[0003] Traditional camshafts are manufactured through integral casting and forging. The cams on such camshafts are basically produced by cutting. In actual work, subsequent processing is complicated, the structural combination is poor, the weight is large, and it is not convenient to quickly change the engine performance design.

[0004] For this reason, we propose an oil pump segmented camshaft to solve the existing problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the background technology and to provide a segmented camshaft for an oil pump.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a segmented camshaft of an oil pump, comprising a sprocket head, a connecting ring, a cam body, a mounting head, a pin groove and a shaft rod, wherein the connecting ring and the cam body are slidably sleeved on the shaft rod in sequence, and connecting rings are symmetrically and movably plugged into both sides of the cam body, and the two connecting rings are pin-connected to each other, a sprocket head is fixed to one end of the shaft rod, and a mounting head is fixed to the other end of the shaft rod.

[0007] Preferably, thread grooves are provided at both ends of the shaft;

[0008] The sprocket head and the mounting head are respectively provided with connecting bolts, and the connecting bolts are threadedly fixed on the thread groove.

[0009] Preferably, the mounting head is provided with mounting holes, and there are two mounting holes in total, and the two mounting holes are symmetrically distributed relative to the mounting head.

[0010] Preferably, a gear disc is mounted on the outer end surface of the sprocket head via mounting pins;

[0011] The outer end surface of the sprocket head is provided with a screw groove which is matched with the installation nail, and the installation nail thread is arranged in the screw groove.

[0012] Preferably, one end surface of the connecting ring and both surfaces of the cam body are provided with pin grooves at equal distances;

[0013] A pin rod is inserted and installed between the pin grooves of the two connecting rings.

[0014] Preferably, the sprocket head, the connecting ring and the mounting head are all welded with convex columns at equal distances, and the convex columns of the sprocket head and the mounting head are inserted into the pin grooves of the connecting ring;

[0015] The protruding column of the connecting ring is inserted into the pin groove of the cam body.

[0016] Preferably, the depth of the pin groove is equal to the length of the boss, and the inner diameter of the pin groove is matched with the diameter of the boss.

[0017] Preferably, the sprocket head, connecting ring, cam body, mounting head and shaft rod are made of CrNiMo- to improve the toughness and rigidity of the camshaft.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] During use of the segmented camshaft of the oil pump of the present invention, the camshaft for this oil pump adopts a split and segmented design. During the actual assembly process, the connecting ring-cam body-connecting ring is a group, and each group of structures is assembled in the order of being sleeved on the shaft rod in sequence. During the assembly process, the connecting rings are positioned with each other by pins, and the connecting ring and the cam body are positioned with each other by bosses. Finally, the sprocket head and the mounting head are fixed at both ends of the shaft rod, and the sprocket head and the mounting head position the two connecting rings on the outermost sides by the bosses, thereby completing the assembly operation of the segmented camshaft. In the present utility model, the camshaft is produced by split assembly, which improves the structural combination of the camshaft, and the position and shape of the camshaft can be flexibly set according to the layout of the engine components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0023] Figure 4 For the utility model Figure 1 Schematic diagram of the cross-sectional structure.

[0024] Reference numerals:

[0025] 1. Sprocket head; 101. Mounting pin; 102. Gear plate; 103. Connecting bolt; 2. Connecting ring; 201. Boss; 202. Pin rod; 3. Cam body; 4. Mounting head; 401. Mounting hole; 5. Pin groove; 6. Shaft rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] like Figures 1-4 As shown, the utility model proposes a segmented camshaft for an oil pump, comprising a sprocket head 1, a connecting ring 2, a cam body 3, a mounting head 4, a pin groove 5 and a shaft rod 6. The connecting ring 2 and the cam body 3 are slidably sleeved on the shaft rod 6 in sequence. The connecting rings 2 are symmetrically and movably plugged on both sides of the cam body 3. The two connecting rings 2 are pin-connected to each other. The sprocket head 1 is fixed to one end of the shaft rod 6, and the mounting head 4 is fixed to the other end of the shaft rod 6.

[0029] Based on Example 1:

[0030] During use of the segmented camshaft of the oil pump of the present invention, the camshaft for this oil pump adopts a split and segmented design. During the actual assembly process, the connecting ring 2-cam body 3-connecting ring 2 is a group, and each group of structures is assembled in sequence by being sleeved on the shaft rod 6. During the assembly process, the connecting rings 2 are positioned with each other through the pin rod 202, and the connecting ring 2 and the cam body 3 are positioned with each other through the boss 201. Finally, the sprocket head 1 and the mounting head 4 are fixed at both ends of the shaft rod 6. The sprocket head 1 and the mounting head 4 position the two connecting rings 2 on the outermost sides through the boss 201, thereby completing the assembly operation of the segmented camshaft. According to the utility model, the camshaft is produced by split assembly, which improves the structural combination of the camshaft and can flexibly set the position and shape of the camshaft according to the layout of the engine components.

[0031] Example 2

[0032] like Figures 1-4 As shown, the utility model proposes an oil pump segmented camshaft. Compared with the first embodiment, this embodiment further includes: thread grooves are provided at both ends of the shaft 6;

[0033] The sprocket head 1 and the mounting head 4 are respectively provided with connecting bolts 103 , which are threadedly fixed on the thread grooves. The cooperation of the above structures facilitates the disassembly and assembly of the sprocket head 1 and the mounting head 4 .

[0034] The mounting head 4 is provided with two mounting holes 401 , which are symmetrically distributed relative to the mounting head 4 . The design of the mounting holes 401 facilitates the connection between the camshaft structure and the driven structure.

[0035] The outer end surface of the sprocket head 1 is mounted with a gear plate 102 via mounting pins 101;

[0036] The outer end surface of the sprocket head 1 is provided with a screw groove adapted to the mounting nail 101 , and the mounting nail 101 is threadedly arranged in the screw groove. Through the cooperation of the above structure, the gear plate 102 can be conveniently disassembled, assembled and maintained.

[0037] One end face of the connecting ring 2 and both sides of the cam body 3 are equidistantly provided with pin grooves 5; a pin rod 202 is inserted and installed between the pin grooves 5 of the two connecting rings 2.

[0038] The sprocket head 1, the connecting ring 2, and the mounting head 4 are all welded with bosses 201 at equal distances. The bosses 201 of the sprocket head 1 and the mounting head 4 are inserted into the pin grooves 5 of the connecting ring 2.

[0039] The boss 201 of the connecting ring 2 is inserted into the pin groove 5 of the cam body 3. Through the cooperation of the above structure, during the actual assembly process, the connecting ring 2-cam body 3-connecting ring 2 is a group, and each group of structures is assembled in the order of being sleeved on the shaft 6 in sequence. During the assembly process, the connecting rings 2 are positioned with each other through the pin rod 202, and the connecting ring 2 and the cam body 3 are positioned with each other through the boss 201.

[0040] The depth of the pin groove 5 is equal to the length of the boss 201, and the inner diameter of the pin groove 5 is adapted to the diameter of the boss 201. The sprocket head 1, connecting ring 2, cam body 3, mounting head 4 and shaft rod 6 are made of 18CrNiMo7-6 to improve the toughness and rigidity of the camshaft.

[0041] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A segmented camshaft for an oil pump, comprising a sprocket head (1), a connecting ring (2), a cam body (3), a mounting head (4), a pin groove (5) and a shaft (6), characterized in that: The shaft (6) is slidably sleeved with a connecting ring (2) and a cam body (3) in sequence, and the cam body (3) is symmetrically and movably connected with a connecting ring (2) on both sides, and the two connecting rings (2) are mutually connected by pins. A sprocket head (1) is fixed to one end of the shaft (6), and a mounting head (4) is fixed to the other end of the shaft (6).

2. The oil pump segmented camshaft according to claim 1, characterized in that: The shaft (6) has thread grooves at both ends. The sprocket head (1) and the mounting head (4) are respectively provided with a connecting bolt (103), and the connecting bolt (103) is threadedly fixed on the thread groove.

3. The oil pump segmented camshaft according to claim 1, characterized in that: The mounting head (4) is provided with mounting holes (401), there are two mounting holes (401) in total, and the two mounting holes (401) are symmetrically distributed relative to the mounting head (4).

4. The oil pump segmented camshaft according to claim 1, characterized in that: The outer end surface of the sprocket head (1) is mounted with a gear plate (102) via a mounting pin (101); The outer end surface of the sprocket head (1) is provided with a screw groove adapted to the mounting nail (101), and the mounting nail (101) is threadedly arranged in the screw groove.

5. The oil pump segmented camshaft according to claim 1, characterized in that: Pin grooves (5) are equidistantly formed on one end surface of the connecting ring (2) and on both sides of the cam body (3); A pin rod (202) is inserted and installed between the pin grooves (5) of the two connecting rings (2).

6. The oil pump segmented camshaft according to claim 1, characterized in that: The sprocket head (1), the connecting ring (2), and the mounting head (4) are all welded with convex columns (201) at equal intervals, and the convex columns (201) of the sprocket head (1) and the mounting head (4) are inserted into the pin groove (5) of the connecting ring (2); The protruding column (201) of the connecting ring (2) is inserted into the pin groove (5) of the cam body (3).

7. The oil pump segmented camshaft according to claim 1, characterized in that: The depth of the pin groove (5) is equal to the length of the boss (201), and the inner diameter of the pin groove (5) is adapted to the diameter of the boss (201).

8. The oil pump segmented camshaft according to claim 1, characterized in that: The sprocket head (1), the connecting ring (2), the cam body (3), the mounting head (4) and the shaft rod (6) are made of 18CrNiMo7-6 material to improve the toughness and rigidity of the camshaft.

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