Oil supply timing adjusting device

Abstract

The utility model discloses an oil supply timing adjusting device which comprises a movable assembly and a locking nut, the movable assembly comprises an ejector head and a supporting sleeve, the ejector head is used for adjusting a pump structure of an engine, the ejector head is in threaded connection with the supporting sleeve, and the ejector head rotates relative to the supporting sleeve so as to adjust the distance between the ejector head and the supporting sleeve; the locking nut is in threaded connection with the ejector head and abuts against the supporting sleeve so as to lock the distance between the ejector head and the supporting sleeve. In the process of adjusting the oil supply timing, the locking nut is rotated, so that the locking nut is separated from the supporting sleeve, the locking of the locking nut on the top head is relieved, and then the top head is rotated by a preset angle according to requirements, so that the distance between the top head and the supporting sleeve is adjusted, and the oil supply timing adjustment is completed; after the distance between the ejector head and the supporting sleeve is adjusted, the locking nut is screwed again, so that the distance between the ejector head and the supporting sleeve is locked at the current position, and the situation that the ejector head continues to rotate due to vibration of an engine or collision of an external structure is avoided.

Description

Technical Field

[0001] This application relates to the technical field of engines, and particularly to a fuel supply timing adjustment device. Background Art

[0002] Fuel supply timing adjustment is an important part of engine maintenance and adjustment, which involves ensuring that the diesel engine injects fuel at the optimal timing to improve efficiency and performance.

[0003] Currently, engines often adjust the fuel supply timing by rotating a tappet, and the angle of rotation of the tappet determines the amplitude of the fuel supply timing adjustment. However, with the vibration of the engine during operation, the tappet will also produce a certain degree of swaying or vibration. It is difficult to maintain the current angle after the tappet rotates by the required angle, which easily leads to inaccurate fuel supply timing adjustment and affects the normal operation of the engine. Utility Model Content

[0004] To solve at least one of the above technical problems, this application provides a fuel supply timing adjustment device, and the technical solutions adopted are as follows:

[0005] This application provides a fuel supply timing adjustment device, which includes a movable assembly and a locking nut. The movable assembly includes a tappet and a support sleeve. The tappet is used to adjust the pump structure of the engine. The tappet is threadedly connected to the support sleeve, and the tappet rotates relative to the support sleeve to adjust the distance between the tappet and the support sleeve. The locking nut is threadedly connected to the tappet and abuts against the support sleeve to lock the distance between the tappet and the support sleeve.

[0006] In some embodiments of this application, the tappet includes a mating section. The side wall of the mating section is provided with an external thread. The support sleeve is provided with a mounting hole, and the inner wall of the mounting hole is provided with an internal thread. The internal thread meshes with the external thread, and the locking nut abuts against the edge of the mounting hole.

[0007] In some embodiments of this application, the fuel supply timing adjustment device further includes a fixing component and an elastic component. The elastic component is sleeved outside the tappet and the support sleeve. The movable assembly further includes a movable part. The movable part is connected to the support sleeve. The elastic component is arranged between the fixing component and the movable part, and the elastic component is used to apply an elastic force to the movable part to reset the movable assembly to the initial position.

[0008] In some embodiments of this application, the fuel supply timing adjustment device further includes a housing with an inner cavity. The fixing component is fixedly connected to the inner wall of the housing. The movable assembly is located inside the housing, and the movable part is slidably connected to the housing.

[0009] In some embodiments of the present application, a first mounting groove is provided at an end of the fixed component facing the elastic component, and a first end of the elastic component is embedded in the first mounting groove.

[0010] In some embodiments of the present application, a second mounting groove is provided at an end of the movable component facing the elastic component, and a second end of the elastic component is embedded in the second mounting groove.

[0011] In some embodiments of the present application, the support sleeve and the movable component are connected by a positioning pin. Both the support sleeve and the movable component are provided with pin holes, and an end of the positioning pin is inserted into the pin holes.

[0012] In some embodiments of the present application, the movable assembly further includes a roller assembly. The roller assembly is connected to the movable component and is used to receive the driving force transmitted by the camshaft of the engine, so that the movable assembly slides in the housing.

[0013] In some embodiments of the present application, the roller assembly includes a roller shaft and a roller body. The roller shaft is fixedly connected to the movable component, and the roller body is rotatably sleeved on the roller shaft.

[0014] In some embodiments of the present application, the movable component is provided with an avoidance space, and the avoidance space provides a rotation space for the roller body.

[0015] The embodiments of the present application have at least the following beneficial effects: In the present application, during the process of adjusting the fuel supply timing, rotate the lock nut to disengage the lock nut from the support sleeve, release the locking of the lock nut on the top head, and then rotate the top head by a preset angle according to the requirement, so as to adjust the distance between the top head and the support sleeve and complete the adjustment of the fuel supply timing; after the distance between the top head and the support sleeve is adjusted, tighten the lock nut again to lock the distance between the top head and the support sleeve at the current position, and avoid the top head from continuing to rotate due to the vibration of the engine or the collision of the external structure.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a cross-sectional view of the fuel supply timing adjustment device of the present application;

[0019] Figure 2 is a side view of the fuel supply timing adjustment device of the present application.

[0020] Reference numerals:

[0021] Ram head 101; Support sleeve 102; Locking nut 103;

[0022] Fixed member 201; Elastic member 202; Movable member 203; Positioning pin 204; Housing 205;

[0023] First mounting groove 301; Second mounting groove 302;

[0024] Roller shaft 401; Roller body 402;

[0025] Pump structure 501; Camshaft 502. Detailed implementation manners

[0026] This part will describe the embodiments of the present application in detail in conjunction with Figures 1 to 2 The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0027] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present application. The features defined with "first" and "second" are used to distinguish the feature names and do not have special meanings. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0028] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connect", and "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0029] An embodiment of the present application provides an oil supply timing adjustment device, which includes a movable component and a locking nut 103 .

[0030] like Figure 1 As shown, in some examples, one end of the movable component is in conflict with the camshaft 502 of the engine, and the other end of the movable component is connected to the pump structure 501 of the engine. The eccentric part of the engine camshaft 502 pushes the movable component to move during the rotation process, so that the end of the movable component connected to the pump structure 501 completes the triggering action, thereby triggering the pump structure 501. It can be understood that since the camshaft 502 of the engine and the pump structure 501 of the engine are located at both ends of the movable component, when the length of the movable component changes, the range of motion of the end of the movable component connected to the pump structure 501 changes, and the operating state of the pump structure 501 is also fine-tuned accordingly, that is, the adjustment of the oil supply timing is completed.

[0031] Among them, the length adjustment of the movable component is the core of the oil supply timing adjustment. To achieve the length adjustment of the movable component, the movable component includes a mandrel 101 and a support sleeve 102, and the mandrel 101 is threadedly connected to the support sleeve 102. Under the effect of the threaded connection, when the mandrel 101 and the support sleeve 102 rotate relative to each other, the distance between the mandrel 101 and the support sleeve 102 changes, and the length of the movable component changes. Furthermore, the support sleeve 102 does not have the degree of freedom of rotation. When the mandrel 101 rotates, the mandrel 101 and the support sleeve 102 rotate relative to each other, and the mandrel 101 is connected to the pump structure 501 of the engine.

[0032] At the same time, after the distance between the mandrel 101 and the support sleeve 102 is adjusted, the relative position of the two needs to be maintained to ensure the effectiveness of the oil supply timing adjustment. When the distance between the mandrel 101 and the support sleeve 102 increases, the effective connection length between the mandrel 101 and the support sleeve 102 decreases, and the mandrel 101 is prone to shaking under the vibration of the external structure or the engine, causing the mandrel 101 to rotate unexpectedly, and the distance between the mandrel 101 and the support sleeve 102 changes. Therefore, the oil supply timing adjustment device also includes a locking nut 103. Under the premise that the mandrel 101 is threadedly connected to the support sleeve 102, the locking nut 103 is also threadedly connected to the mandrel 101, and the locking nut 103 increases the effective connection length between the mandrel 101 and the support sleeve 102.

[0033] Further, when adjusting the distance between the plug 101 and the support sleeve 102, the locking nut 103 in contact with the support sleeve 102 will hinder the rotation of the plug 101. It is necessary to disengage the locking nut 103 from the support sleeve 102 before adjustment, that is, loosen the locking nut 103. After the distance between the plug 101 and the support sleeve 102 is adjusted, it is necessary to lock the relative position between the plug 101 and the support sleeve 102. At this time, rotate the locking nut 103 to make the locking nut 103 contact the support sleeve 102 again, so as to prevent the distance between the plug 101 and the support sleeve 102 from changing.

[0034] Specifically, rotate the plug 101 counterclockwise to increase the distance between the plug 101 and the support sleeve 102, so as to achieve the effect of increasing the fuel injection timing; rotate the plug 101 clockwise to decrease the distance between the plug 101 and the support sleeve 102, so as to achieve the effect of decreasing the fuel injection timing.

[0035] In some examples, the plug 101 includes a mating section, the mating section is at one end of the plug 101 facing the support sleeve 102, and the side wall of the mating section is provided with an external thread. At the same time, one end of the support sleeve 102 facing the plug 101 is provided with a mounting hole, and the inner wall of the mounting hole is provided with an internal thread. When one end of the plug 101 facing the support sleeve 102 is in the mounting hole, the plug 101 and the support sleeve 102 are threadedly connected.

[0036] Further, when the locking nut 103 needs to lock the distance between the plug 101 and the support sleeve 102, the locking nut 103 abuts against the edge of the mounting hole, and the plug 101, the support sleeve 102 and the locking nut 103 are coaxially arranged.

[0037] In some examples, the fuel supply timing adjustment device further includes a fixing member 201 and an elastic member 202, and the movable assembly further includes a movable member 203. The elastic member 202 is arranged between the fixing member 201 and the movable member 203. The position of the fixing member 201 is stable. When the movable assembly triggers the pump structure 501 under the driving action of the eccentric part of the camshaft 502, the distance between the movable member 203 and the fixing member 201 decreases, and the movable member 203 and the fixing member 201 compress the elastic member 202 therebetween. As the camshaft 502 rotates, the eccentric part of the camshaft 502 disengages from the movable assembly. At this time, the movable assembly needs to reset to the initial position. The compressed elastic member 202 has a tendency to restore its own length, providing a certain amount of power for the reset of the movable assembly and ensuring the reset efficiency of the movable assembly.

[0038] Specifically, the movable member 203 is connected to the support sleeve 102, and the elastic member 202 includes a spring. The spring is sleeved outside the plug 101 and the support sleeve 102, and the two ends of the spring abut against the fixing member 201 and the movable member 203 respectively.

[0039] In some examples, the end of the support sleeve 102 away from the head 101 is plugged into the movable part 203, and the end of the support sleeve 102 away from the head 101 is provided with a step structure, and at the same time, the end of the movable part 203 for inserting the support sleeve 102 is also provided with a step structure accordingly. When the two step structures conflict with each other, the support sleeve 102 is plugged into place.

[0040] Furthermore, a positioning pin 204 is provided between the support sleeve 102 and the movable component 203, and the positioning pin 204 can prevent the support sleeve 102 and the movable component 203 from rotating relative to each other. The step structures of the support sleeve 102 and the movable component 203 are both provided with pin holes, and when the two step structures collide, the two pin holes are connected to each other, and the two ends of the positioning pin 204 are respectively inserted into the two pin holes.

[0041] In some examples, the oil supply timing adjustment device also includes a shell 205 having an inner cavity, the fixed component 201 is fixedly connected to the inner wall of the shell 205 and will not move relative to the shell 205, and the movable component is slidably connected to the shell 205 inside the shell 205.

[0042] In some examples, in order to ensure the stability of the position of the elastic component 202 and prevent the elastic component 202 from tilting in the shell 205, the fixed component 201 is provided with a first mounting groove 301 at the end toward the elastic component 202, and the movable component 203 is provided with a second mounting groove 302 at the end toward the elastic component 202. The first end of the elastic component 202 is embedded in the first mounting groove 301, and the second end of the elastic component 202 is embedded in the second mounting groove 302.

[0043] like Figure 1 and Figure 2 As shown, in some examples, the movable assembly further includes a roller assembly, which is connected to the movable component 203. The roller assembly is used to resist the camshaft 502 of the engine, and the camshaft 502 transmits the driving force to the roller assembly during the rotation process, and the roller assembly then transmits the driving force to the movable component 203, thereby driving the movable assembly to slide in the housing 205.

[0044] Furthermore, since the camshaft 502 transmits the driving force in the form of rotation, the roller assembly can be in rolling contact with the camshaft 502, thereby avoiding large friction between the camshaft 502 and the movable assembly.

[0045] In some examples, the roller assembly includes a roller shaft 401 and a roller body 402. The roller shaft 401 is rotatably connected to the roller body 402, enabling the roller body 402 to roll freely in a manner adapted to the rotation of the camshaft 502. Further, the roller shaft 401 is fixedly connected to the movable member 203 to ensure that the driving force can be transmitted from the roller shaft 401 to the movable member 203. It can be understood that the axial direction of the roller shaft 401 is approximately perpendicular to the axial directions of the top head 101 and the support sleeve 102, causing the roller body 402 to abut against the camshaft 502 with its arc-shaped side wall.

[0046] Specifically, a jack is provided at a position of the movable member 203 close to the camshaft 502. The axial direction of the jack is approximately perpendicular to the axial directions of the top head 101 and the support sleeve 102. The roller shaft 401 is inserted into the jack and fixedly connected to the movable member 203 through a fastener.

[0047] In some examples, the movable member 203 is provided with an avoidance space that avoids the rotation space of the roller body 402 to ensure the smooth rotation of the roller body 402. During the installation of the roller assembly, first, the roller body 402 is placed into the avoidance space, making the hollow part of the roller body 402 coaxial with the jack, then the roller shaft 401 is inserted into the jack, and the corresponding fastener is installed. Specifically, the hollow part of the movable member 203 for inserting the support sleeve 102 is in communication with the avoidance space, so the movable member 203 is generally formed into a cylindrical structure.

[0048] In the actual implementation process, first, adjust the fuel injection timing. Loosen the lock nut 103, rotate the top head 101 by the required angle to cause a corresponding change in the distance between the top head 101 and the support sleeve 102, and then tighten the lock nut 103 to maintain the adjusted distance between the top head 101 and the support sleeve 102. The camshaft 502 of the engine rotates, and the driving force is transmitted to the movable assembly through the roller body 402 that rolls in contact with the camshaft 502. The movable assembly slides within the housing 205, causing the top head 101 to trigger the pump structure 501 of the engine.

[0049] In the description of this specification, if descriptions such as the reference terms "one embodiment", "some examples", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" appear, it means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0050] The embodiments of the present application have been described in detail with reference to the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A fuel supply timing adjustment device, characterized in that: include: A movable assembly, the movable assembly comprising a mandrel and a support sleeve, the mandrel being used to adjust the pump structure of the engine, the mandrel being threadedly connected to the support sleeve, and the mandrel being rotated relative to the support sleeve to adjust the distance between the mandrel and the support sleeve; A locking nut is threadedly connected to the mandrel and abuts against the support sleeve to lock the distance between the mandrel and the support sleeve.

2. The oil supply timing adjustment device according to claim 1, characterized in that: The top head includes a matching section, the side wall of the matching section is provided with an external thread, the support sleeve is provided with a mounting hole, the inner wall of the mounting hole is provided with an internal thread, the internal thread and the external thread are meshed with each other, and the locking nut abuts against the edge of the mounting hole.

3. The oil supply timing adjustment device according to claim 1, characterized in that: The oil supply timing adjustment device also includes a fixed component and an elastic component, wherein the elastic component is sleeved on the outside of the top head and the support sleeve, and the movable component also includes a movable component, which is connected to the support sleeve, and the elastic component is arranged between the fixed component and the movable component, and the elastic component is used to apply elastic force to the movable component to reset the movable component to an initial position.

4. The oil supply timing adjustment device according to claim 3, characterized in that: The oil supply timing adjustment device also includes a shell having an inner cavity, the fixed component is fixedly connected to the inner wall of the shell, the movable component is located in the shell, and the movable component is slidably connected to the shell.

5. The oil supply timing adjustment device according to claim 3 or 4, characterized in that: The fixing component is provided with a first mounting groove at an end portion facing the elastic component, and the first end of the elastic component is embedded in the first mounting groove.

6. The oil supply timing adjustment device according to claim 3 or 4, characterized in that: The movable component is provided with a second mounting groove at an end portion facing the elastic component, and the second end of the elastic component is embedded in the second mounting groove.

7. The oil supply timing adjustment device according to claim 3, characterized in that: The support sleeve is connected to the movable component via a positioning pin. Both the support sleeve and the movable component are provided with pin holes, and the end of the positioning pin is inserted into the pin hole.

8. The oil supply timing adjustment device according to claim 4, characterized in that: The movable component also includes a roller component, which is connected to the movable part and is used to receive the driving force transmitted by the camshaft of the engine to make the movable component slide in the housing.

9. The oil supply timing adjustment device according to claim 8, characterized in that: The roller assembly comprises a roller shaft and a roller body. The roller shaft is fixedly connected to the movable component, and the roller body is rotatably sleeved on the roller shaft.

10. The oil supply timing adjustment device according to claim 9, characterized in that: The movable component is provided with an escape space, and the escape space escapes the rotation space of the roller body.

Images