Combined device of oil filling pipe and cylinder head cover and excavator

Abstract

The utility model discloses an engine oil filling pipe and cylinder head cover combination device and an excavator, the engine oil filling pipe and cylinder head cover combination device comprises a cylinder head cover, an engine oil filling pipe and a damping piece, and the cylinder head cover is provided with an engine oil filling hole. The engine oil adding pipe comprises a pipe body and a flange limiting step arranged on the periphery of the pipe body, the pipe body is a hollow pipe fitting, and the bottom end of the pipe body is inserted into the engine oil adding hole. The damping piece is arranged on the periphery of the pipe body, and the two end faces arranged back to back abut against the opposite surfaces of the flange limiting step and the cylinder head cover correspondingly. A flange limiting step is arranged at the position, matched with the cylinder head cover, of the oil filling pipe, and the stress area of the position, matched with the cylinder head cover, of the oil filling pipe is increased. According to the combined device of the engine oil filling pipe and the cylinder head cover, the damping part is arranged, vibration transmitted to the engine oil filling pipe from the cylinder head cover position is weakened, then vibration of the engine oil filling pipe is reduced, and therefore the service life of the engine oil filling pipe can be prolonged through the combined device of the engine oil filling pipe and the cylinder head cover.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe fixing, in particular to a combined device of an oil pipe and a cylinder head cover and an excavator. Background Art

[0002] For large machines, such as engines, in order to add engine oil, an oil filling pipe is usually installed on the cylinder head cover for oil filling.

[0003] Typically, the oil filler pipe is located in the center of the cylinder head cover and connected to the cover using a clip-on, slotted connection. However, due to the high vibrations in the center of the cylinder head cover, these vibrations are transmitted to the oil filler pipe, which can damage the pipe over time.

[0004] Therefore, how to extend the service life of the oil filling pipe is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a combined device of an engine oil pipe and a cylinder head cover and an excavator, so as to extend the service life of the engine oil pipe.

[0006] The combined device of the oil filling pipe and the cylinder head cover provided in the present application comprises:

[0007] A cylinder head cover, wherein the cylinder head cover is provided with an oil filling hole;

[0008] An oil filling pipe, the oil filling pipe comprising a pipe body and a flange limiting step arranged on the outer periphery of the pipe body, the pipe body being a hollow pipe, and the bottom end of the pipe body being inserted into the oil filling hole;

[0009] A shock-absorbing component is arranged on the outer periphery of the tube body, and two end surfaces arranged in opposite directions respectively abut against the flange limiting step and the opposite surface of the cylinder head cover.

[0010] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, the shock absorbing member is a damping member, and the bottom surface of the flange limiting step is provided with an anti-slip layer, and the anti-slip layer abuts against the shock absorbing member.

[0011] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, the anti-slip layer is arranged in a serrated shape, and the serrations are arranged in a sharp angle at one end facing the shock absorber.

[0012] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, a device accommodating groove for accommodating the shock absorber is formed between the flange limiting step and the cylinder head cover. The device accommodating groove is annular and is opened to the side away from the oil filling hole. The bottom of the device accommodating groove is formed by the flange limiting step and the side wall of the cylinder head cover.

[0013] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, the flange limiting step is an annular structure sleeved on the outer periphery of the pipe body, and the thickness of the flange limiting step gradually increases towards the pipe body.

[0014] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, the upper surface of the cylinder head cover is provided with a groove that cooperates with the shock absorber, and the groove is arranged in a ring shape around the outer periphery of the top end of the oil filling hole.

[0015] Optionally, in the above-mentioned combination device of the oil filling pipe and the cylinder head cover, the inner wall of the oil filling hole is provided with a limit block, and the tube body is provided with a limit groove adapted to the limit block.

[0016] Optionally, in the above-mentioned combination device of the engine oil pipe and the cylinder head cover, the engine oil pipe is an integrally formed structure.

[0017] Optionally, the above-mentioned combination device of the oil filling pipe and the cylinder head cover further includes a first sealing ring, which is located at the connection position between the tube body and the lower surface of the flange limiting step and can fit with the wall surface of the oil filling hole.

[0018] An excavator includes an oil filler cap and a combination of an oil filler pipe and a cylinder head cover, wherein the combination of the oil filler pipe and the cylinder head cover is the combination of the oil filler pipe and the cylinder head cover described in any one of the above items, and the oil filler cap can seal the oil filler pipe of the combination of the oil filler pipe and the cylinder head cover.

[0019] In the above technical solution, the combined device of the oil filling pipe and the cylinder head cover provided by the utility model includes a cylinder head cover, an oil filling pipe and a shock absorber, and the cylinder head cover is provided with an oil filling hole. The oil filling pipe includes a pipe body and a flange limiting step arranged on the outer periphery of the pipe body. The pipe body is a hollow pipe, and the bottom end of the pipe body is inserted into the oil filling hole. The shock absorber is arranged on the outer periphery of the pipe body, and the two end faces arranged in opposite directions respectively abut against the surfaces opposite to the flange limiting step and the cylinder head cover. During assembly, the bottom end of the pipe body is inserted into the oil filling hole, and the shock absorber is arranged on the outer periphery of the pipe body. At the same time, the two end faces arranged in opposite directions respectively abut against the surfaces opposite to the flange limiting step and the cylinder head cover to achieve assembly.

[0020] As can be seen from the above description, in the combined oil pipe and cylinder head cover provided by this application, a flange stopper is provided at the location where the oil pipe mates with the cylinder head cover, thereby increasing the stress-bearing area of ​​the oil pipe where it mates with the cylinder head cover. Furthermore, a shock absorber is provided to reduce vibration transmitted from the cylinder head cover to the oil pipe, thereby reducing vibration in the oil pipe. Therefore, the combined oil pipe and cylinder head cover provided by this application can extend the service life of the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of the combined device of the oil filling pipe and the cylinder head cover provided by an embodiment of the utility model;

[0023] Figure 2 This is a partial enlarged view of the combined device of the oil filling pipe and the cylinder head cover provided in an embodiment of the utility model.

[0024] in Figure 1-2 Middle: 1-oil filling pipe, 101-flange limit step, 102-tube body, 2-cylinder head cover, 3-shock absorber, 4-first sealing ring, 5-second sealing ring, 6-oil filling port cover. DETAILED DESCRIPTION

[0025] The core of the utility model is to provide a combined device of an engine oil pipe and a cylinder head cover and an excavator, so as to extend the service life of the engine oil pipe.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0027] Please refer to Figure 1 and Figure 2 .

[0028] In one embodiment, the combined oil pipe and cylinder head cover assembly provided by the present invention includes a cylinder head cover 2, an oil pipe 1, and a shock absorber 3. The cylinder head cover 2 is provided with an oil filling port. The oil pipe 1 includes a hollow body 102 and a flange stopper 101 disposed on the outer periphery of the body 102. The body 102 is a hollow tube, and the bottom end of the body 102 is inserted into the oil filling port.

[0029] The cylinder head cover 2 and the oil filling pipe 1 can be made of plastic.

[0030] The shock absorber 3 is positioned around the outer periphery of the tubular body 102, with its two oppositely facing end surfaces abutting the flange stop 101 and the opposing surfaces of the cylinder head cover 2, respectively, to reduce vibration transmitted to the top end. The shock absorber 3 may be a compression spring. To ensure axial compression along the oil filler pipe 1, the shock absorber 3 is preferably positioned around the outer periphery of the tubular body 102.

[0031] In one embodiment, shock absorber 3 is an elastic damping element, such as a rubber structure. Specifically, shock absorber 3 is an annular structure and is disposed around the outer periphery of tube body 102. Because shock absorber 3 is a damping element, it not only provides shock absorption but also provides a sealing effect, reducing oil leakage at the junction of the fuel filler pipe and cylinder head cover 2.

[0032] During assembly, the bottom end of the tubular body 102 is inserted into the oil filling hole, and the shock absorber 3 is arranged on the outer periphery of the tubular body 102. At the same time, the two end surfaces of the shock absorber 3 facing away from each other respectively abut against the flange stop step 101 and the opposing surfaces of the cylinder head cover 2. Specifically, the upper surface of the shock absorber 3 abuts against the flange stop step 101, and the lower surface of the shock absorber 3 abuts against the upper surface of the cylinder head cover 2, completing the assembly.

[0033] As can be seen from the above description, in the combined oil pipe and cylinder head cover assembly provided in the specific embodiment of this application, a flange stopper 101 is provided at the location where the oil pipe 1 mates with the cylinder head cover 2. This increases the stress-bearing area of ​​the oil pipe where it mates with the cylinder head cover 2, increases the contact area at the connection, and improves the joint rigidity. Simultaneously, a shock absorber 3 is provided to attenuate vibration transmitted from the cylinder head cover 2 to the oil pipe 1, thereby reducing vibration in the oil pipe 1. Therefore, the combined oil pipe 1 and cylinder head cover 2 assembly provided in this application can extend the service life of the oil pipe 1.

[0034] In a specific embodiment, the bottom surface of the flange limiting step 101 is provided with an anti-slip layer, and the anti-slip layer abuts against the shock absorber 3. Specifically, the anti-slip layer can be an anti-slip pattern provided at the position of the flange limiting step 101. By providing the anti-slip pattern, the anti-slip property of the connection position between the flange limiting step 101 and the shock absorber 3 is improved.

[0035] like Figure 1 and Figure 2 As shown, in one specific embodiment, the anti-slip layer is arranged in a serrated pattern, which can be arranged in an array, such as a matrix or an annular array around the tube body 102. The serrations are angled at the end facing the shock absorber 3, with the tips of the serrations being acute. Adding a serrated structure to the bottom flange surface of the oil filler pipe 1 increases friction, reduces the risk of loosening, improves sealing, and thus enhances installation reliability.

[0036] like Figure 2 As shown, in a specific embodiment, the bottom end of the saw tooth can be arranged vertically downward, or one surface of the saw tooth can be perpendicular to the horizontal plane, and the other surface can be arranged at an acute angle to the horizontal plane.

[0037] In order to further improve the installation reliability of the oil filling pipe 1, preferably, the tip of the saw teeth extends into the interior of the shock absorber 3. That is, after the oil filling pipe 1 and the cylinder head cover 2 are assembled, the tip of the saw teeth pierces the surface of the shock absorber 3 and then extends into the interior of the shock absorber 3.

[0038] In a specific embodiment, a device receiving groove for accommodating the shock absorber 3 is formed between the flange limiting step 101 and the cylinder head cover 2. The device receiving groove is annular and is opened to the side away from the oil filling hole. This arrangement facilitates the installation of the damping member.

[0039] Specifically, the bottom of the device-receiving groove is formed by the flange stop step 101 and the sidewall of the cylinder head cover 2. For example, the lower surface of the flange stop step 101 is stepped, and the upper surface of the cylinder head cover 2 is stepped. When the flange stop step 101 and the cylinder head cover 2 are in contact, the device-receiving groove is formed. In a specific configuration, the contacting surface of the flange stop step 101 and the cylinder head cover 2 can be flat, while the stepped surface of the other forms the bottom of the device-receiving groove.

[0040] In one specific embodiment, the flange stop step 101 is an annular structure that is sleeved around the outer circumference of the pipe body 102. The thickness of the flange stop step 101 gradually increases as it approaches the pipe body 102. As shown in the figure, the thickness of the flange stop step 101 is its height dimension. For example, the upper surface of the flange stop step 101 gradually increases in height as it approaches the centerline of the pipe body 102. By increasing the thickness of the flange stop step 101, the strength of the flange stop step 101 is increased, and deformation of the flange stop step 101 is reduced.

[0041] Of course, the upper surface of the flange limiting step 101 can also be connected to the pipe body 102 via reinforcing ribs, wherein the reinforcing ribs are distributed around the outer circumference of the pipe body 102. By providing reinforcing ribs connected to the pipe body 102 at the flange limiting step 101, the strength of the flange limiting step 101 is improved and the deformation of the flange limiting step 101 is reduced.

[0042] In one embodiment, the surface of the cylinder head that mates with the shock absorber 3 can be flat. Preferably, the upper surface of the cylinder head cover 2 is provided with a groove that mates with the shock absorber 3. The groove is arranged in a circular pattern around the outer circumference of the top of the oil filling port. The groove facilitates positioning of the shock absorber 3 and reduces the risk of foreign matter contacting the shock absorber 3.

[0043] In one embodiment, a stopper is provided on the inner wall of the oil filling port, and a stopper groove adapted to fit within the stopper is provided on the pipe body 102. Specifically, when the oil filling pipe 1 is inserted into the cylinder head cover 2, the stopper engages with the stopper groove, effectively connecting the oil filling pipe 1 to the shock absorber 3.

[0044] Specifically, in order to facilitate the cooperation between the oil filling pipe 1 and the cylinder head cover 2, when the oil filling pipe 1 is inserted into the cylinder head cover 2, it screws into the oil filling hole of the cylinder head cover 2. The oil filling hole and the pipe body 102 are provided with mutually compatible threaded structures. When rotated into place, the limit block is clamped in the limit groove to achieve the cooperation between the oil filling pipe 1 and the cylinder head cover 2.

[0045] In a specific embodiment, the oil filling pipe 1 is an integrally formed structure. Specifically, the pipe body 102 and the flange limiting step 101 are integrally formed, for example, the two are integrally cast.

[0046] In one embodiment, the combined oil pipe and cylinder head cover assembly further includes a first sealing ring 4, which is located where the pipe body 102 meets the lower surface of the flange stop step 101 and is capable of contacting the wall of the oil filling hole. Specifically, the end of the oil filling hole is provided with a guide surface that contacts the first sealing ring 4. The provision of the first sealing ring 4 further improves the sealing performance of the connection between the oil pipe 1 and the cylinder head cover 2.

[0047] This application provides an excavator comprising an oil filler cap and an oil filler pipe and cylinder head cover assembly. The oil filler pipe and cylinder head cover assembly is any of the aforementioned oil filler pipe and cylinder head cover assembly. The oil filler cap is capable of sealing the oil filler pipe of the oil filler pipe and cylinder head cover assembly. The specific structure of the oil filler pipe and cylinder head cover assembly has been described above. This application also includes the aforementioned oil filler pipe and cylinder head cover assembly and achieves the aforementioned technical effects.

[0048] During assembly, the oil inlet of the oil filler pipe 1 is sealed with an oil filler cap 6. To prevent oil leakage from the oil filler cap 6 during use, a second sealing ring 5 is preferably provided at the connection between the oil filler pipe 1 and the oil filler cap 6. Specifically, the second sealing ring 5 is mounted around the outer periphery of the oil filler cap 6, which extends into the oil filler pipe 1.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combination device of an oil filling pipe and a cylinder head cover, characterized in that: include: A cylinder head cover (2), wherein the cylinder head cover (2) is provided with an oil filling hole; An engine oil filling pipe (1), the engine oil filling pipe (1) comprising a pipe body (102) and a flange limiting step (101) arranged on the outer periphery of the pipe body (102), the pipe body (102) being a hollow pipe, and the bottom end of the pipe body (102) being inserted into the engine oil filling hole; A shock-absorbing member (3) is provided on the outer periphery of the tube body (102), and two end surfaces thereof are arranged in a reverse direction and respectively abut against the flange limiting step (101) and the surfaces opposite to the cylinder head cover (2).

2. The oil filling pipe and cylinder head cover assembly according to claim 1, characterized in that: The shock absorbing member (3) is a damping member, and the bottom surface of the flange limiting step (101) is provided with an anti-slip layer, and the anti-slip layer abuts against the shock absorbing member (3).

3. The oil filling pipe and cylinder head cover assembly according to claim 2, characterized in that: The anti-slip layer is arranged in a sawtooth shape, and one end of the sawtooth facing the shock absorbing member (3) is arranged in a sharp angle.

4. The oil filling pipe and cylinder head cover assembly according to claim 2, characterized in that: A device receiving groove for accommodating the shock-absorbing component (3) is formed between the flange limiting step (101) and the cylinder head cover (2). The device receiving groove is annular and is opened to a side away from the oil filling hole. The bottom of the device receiving groove is formed by the flange limiting step (101) and the side wall of the cylinder head cover (2).

5. The oil filling pipe and cylinder head cover assembly according to claim 1, characterized in that: The flange limiting step (101) is an annular structure sleeved on the outer circumference of the pipe body (102), and the thickness of the flange limiting step (101) gradually increases towards the pipe body (102).

6. The oil filling pipe and cylinder head cover assembly according to claim 1, characterized in that: The upper surface of the cylinder head cover (2) is provided with a groove that matches the shock absorber (3), and the groove is arranged in a ring shape around the outer periphery of the top end of the oil filling hole.

7. The oil filling pipe and cylinder head cover assembly according to claim 1, characterized in that: The inner wall of the oil filling hole is provided with a limiting block, and the tube body (102) is provided with a limiting groove adapted to the limiting block.

8. The oil filling pipe and cylinder head cover assembly according to claim 1, characterized in that: The oil filling pipe (1) is an integrally formed structure.

9. The oil filling pipe and cylinder head cover assembly according to any one of claims 1 to 8, characterized in that: It also includes a first sealing ring (4), which is located at the connection position between the tube body (102) and the lower surface of the flange limiting step (101), and can fit with the wall surface of the oil filling hole.

10. An excavator, characterized in that: The invention comprises an oil filling port cover and a combination device of an oil filling pipe and a cylinder head cover, wherein the combination device of the oil filling pipe and the cylinder head cover is the combination device of the oil filling pipe and the cylinder head cover according to any one of claims 1 to 9, and the oil filling port cover can seal the oil filling pipe (1) of the combination device of the oil filling pipe and the cylinder head cover.

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