Actuating mechanism for diesel engine and diesel engine

Abstract

The utility model belongs to the technical field of diesel engine control devices, and particularly relates to an executing mechanism. The utility model provides an actuating mechanism for a diesel engine, which comprises a fixed cover, a pair of guide columns, a pair of guide columns, a pair of guide columns, a pair of guide columns and a pair of guide columns, and is characterized in that a support is fixed below the fixed cover; a pair of guide holes are formed in the surface of the pull rod, and one end of each guide column penetrates through the corresponding guide hole; the electric driving structure is arranged on the fixed cover, and the driving end of the electric driving structure extends to the lower part of the fixed cover and is connected with the first end of the pull rod through a connecting block; the manual driving structure is rotationally connected to one side of the fixed cover and comprises an L-shaped shifting rod, and the L-shaped shifting rod abuts against the first end of the pull rod; the electric driving structure and the manual driving structure are arranged, the electric driving structure controls the stroke of the pull rod and conducts braking, in the emergency state, the pull rod is controlled through the mechanical driving structure so as to achieve the emergency braking effect in the special state, and the functional stability and safety of the executing mechanism in the using process are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of diesel engine control devices, specifically relating to actuators, and more particularly to diesel engine actuators. Background Technology

[0002] Diesel engines typically use actuators to control their fuel output to meet the flow and pressure requirements under different operating conditions. Currently, common actuator control methods mainly include mechanical and electric types.

[0003] Electric actuators: driven by motors, they offer high control precision and are easy to integrate with automation systems. However, they rely on power supply and may not function properly during power outages or circuit failures. Furthermore, the motors are prone to damage under frequent start-stop or overload conditions. Mechanical actuators: adjusted through mechanical structures, they are simple in structure and require no external power. However, they are slow to adjust and are not suitable for remote or automated control scenarios.

[0004] In practical applications, electric actuators are often used because production requires control with a fast response speed. However, if the electric components are damaged and emergency braking is needed, the fuel injection pump in the diesel engine will not be able to stop supplying fuel, which may lead to equipment damage or safety accidents. Therefore, the inability of electric actuators to stop fuel injection pump supply in the event of power failure or circuit failure is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one actuator for a diesel engine to solve the aforementioned technical problems.

[0007] In a first aspect, embodiments of this disclosure provide an actuator for a diesel engine, comprising: a fixed cover with a bracket fixed below it, and a pair of guide posts fixed to one side of the bracket; a pull rod with a pair of guide holes on its surface, one end of each guide post passing through a corresponding guide hole; an electric drive structure disposed on the fixed cover, with its drive end extending below the fixed cover and connected to the first end of the pull rod via a connecting block; and a manual drive structure rotatably connected to one side of the fixed cover, including an L-shaped lever abutting against the first end of the pull rod; wherein the drive end or the L-shaped lever is configured to rotate to move the pull rod horizontally along the guide posts.

[0008] In one optional embodiment, the electric drive structure includes a motor disposed above the fixed cover, with its rotating shaft extending below the fixed cover and connected to a fork, the fork having a notch; the connecting block has a movable groove, a ball joint is rotatably connected within the movable groove, the position where the ball joint abuts against the inner wall of the notch is the driving end; wherein, the motor rotates the fork via the rotating shaft, thereby driving the ball joint to tilt, so that the connecting block drives the pull rod to move horizontally along the guide post.

[0009] In one optional embodiment, the fork is provided with a mounting hole adapted to the rotating shaft, and an adjustment port is provided on the side facing away from the notch. A threaded hole is provided at the center of the adjustment port, and a threaded bolt is adapted to be threaded into the threaded hole. The bolt is adapted to pass through the threaded hole, thereby reducing the width of the adjustment port and pressing the rotating shaft into the mounting hole.

[0010] In one alternative embodiment, a stop screw is provided on one side of the fixing cover, one end of which is adapted to abut against one side of the fork.

[0011] In one alternative embodiment, the other end of the stop screw extends outside the fixing cover and is connected to a locking nut, and an oil sealing nut is also provided on the stop screw on the side of the locking nut.

[0012] In one alternative embodiment, the manual drive structure includes an operating shaft rotatably connected to one side of the fixed cover, one end of which extends below the fixed cover and is fixedly connected to an L-shaped lever; wherein the operating shaft is configured to rotate to drive the L-shaped lever to move the pull rod to one side along the guide post.

[0013] In one alternative embodiment, a handle is fixed to the other end of the operating shaft; and a stop rod adapted to abut against the handle is provided on one side of the fixed cover.

[0014] In one alternative embodiment, the manual drive structure further includes a return spring, one end of which is connected to the fixed cover and the other end of which is connected to the handle.

[0015] Secondly, embodiments of this disclosure provide a diesel engine, including: a fuel injection pump, which includes a fuel quantity adjusting rack, one end of which is connected to a second end of a lever in the actuator as claimed in any one of the claims; wherein the lever is adapted to move horizontally along a guide post to drive the fuel quantity adjusting rack to move in order to adjust the fuel quantity.

[0016] The beneficial effects of this utility model are that it provides an actuator for a diesel engine, which, by setting an electric drive structure and a manual drive structure, allows the electric drive structure to control the stroke of the lever and perform braking, while in an emergency, the manual drive structure controls the lever to achieve an emergency braking effect under special conditions, thereby improving the functional stability of the actuator during use.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A front view of the actuator provided in an embodiment of this disclosure;

[0021] Figure 2 A partial cross-sectional view of the actuator provided in an embodiment of this disclosure;

[0022] Figure 3 Provided for the embodiments of this disclosure Figure 1 Sectional view of AA in the middle;

[0023] Figure 4 A partial top cross-sectional view of a lever fork provided in an embodiment of this disclosure;

[0024] Figure 5 This is a top view of the rotating state of the fork provided in an embodiment of this disclosure;

[0025] Figure 6 This is a partial cross-sectional view of the connecting block provided in an embodiment of this disclosure.

[0026] In the picture:

[0027] 1. Fixing cover;

[0028] 2. Bracket; 21. Guide column;

[0029] 3. Tie rod; 31. First end; 32. Guide hole; 33. Connecting block;

[0030] 4. Electric drive structure; 41. Motor; 42. Rotating shaft; 43. Shift fork; 431. Notch; 432. Mounting hole; 433. Adjustment port; 434. Threaded hole; 435. Bolt; 44. Drive end; 45. Ball head column; 46. Movable groove;

[0031] 5. Manual drive structure; 51. Control shaft; 52. L-shaped lever; 53. Handle; 54. Return spring;

[0032] 6. Stop screw; 61. Locking nut; 62. Oil sealing nut. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0035] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0036] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0037] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0038] Research has revealed the shortcomings of existing technologies: common actuator control methods mainly include mechanical and electric types.

[0039] Electric actuators: driven by motors, they offer high control precision and are easy to integrate with automation systems. However, they rely on power supply and may not function properly during power outages or circuit failures. Furthermore, the motors are prone to damage under frequent start-stop or overload conditions. Manual actuators: adjusted via mechanical structures, they are simple in structure and require no external power. However, they are slow to adjust and are not suitable for remote or automated control scenarios.

[0040] Therefore, in practical applications, if the electric components are damaged, it is impossible to brake the diesel engine when emergency braking is required. However, in daily operation, the adjustment speed of the manual actuator is slow, which is a technical problem that urgently needs to be solved in this field.

[0041] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] like Figures 1 to 6As shown, some embodiments provide an actuator for a diesel engine, including: a fixed cover 1, which is mounted on the diesel engine; a bracket 2 is fixed below the fixed cover 1, which is used to fix a pull rod 3; and a pair of guide posts 21 are fixed on one side of the bracket 2. A pair of guide holes 32 are provided on the surface of the pull rod 3, and one end of each guide post 21 passes through the corresponding guide hole 32. That is, the pull rod 3 can move along the length direction of the guide hole 32 under the action of the guide post 21. The pull rod 3 has a first end 31 and a second end 34. The first end 31 is used to connect with a drive assembly, and the second end 34 is used to connect with a fuel quantity regulating rack. Specifically, the drive assembly drives the first end 31 to move horizontally, so as to achieve the effect of driving the second end 34 to drive the fuel quantity regulating rack to move. It should be further noted that the drive assembly in this embodiment includes manual and electric modes. The manual mode is used for emergency braking, and the electric mode is used to control the travel of the fuel quantity regulating rack and braking.

[0045] An electric drive structure 4 is mounted on a fixed cover 1, with its drive end 44 extending below the fixed cover 1 and connected to the first end 31 of the pull rod 3 via a connecting block 33; wherein the drive end 44 or the L-shaped lever 52 is configured to rotate to move the pull rod 3 horizontally along the guide post 21.

[0046] The composition of the electric drive structure 4 is described in detail below. The electric drive structure 4 includes a motor 41, which is located above the fixed cover 1, and its rotating shaft 42 extends below the fixed cover 1 and is connected to a shift fork 43. The shift fork 43 has a notch 431. The connecting block 33 has a movable groove 46, and a ball joint 45 is rotatably connected in the movable groove 46. Figures 4 to 6 As shown, when the motor 41 drives the fork 43 to move in the F1 direction, the fork 43 will push the top of the ball head post 45 to move in the F2 direction, that is, make the ball head post 45 rotate in the movable connection position, so that its top moves in the F2 direction and its bottom moves in the F3 direction, that is, drive the connecting block 33 in the F3 direction, and then make the pull rod 3 move in the F3 direction. The position where the ball head post 45 abuts against the inner wall of the notch 431 is the driving end 44; wherein, the motor 41 drives the fork 43 to rotate through the rotating shaft 42, thereby driving the ball head post 45 to tilt, so that the connecting block 33 drives the pull rod 3 to move horizontally along the guide post 21.

[0047] The specific connection method between the motor 41 and the shift fork 43 is described below. The shift fork 43 is provided with a mounting hole 432 that is adapted to the rotating shaft 42. An adjustment port 433 is provided on the side facing away from the notch 431. A threaded hole 434 is provided at the center of the adjustment port 433. The threaded hole 434 is suitable for threaded connection of bolt 435. The bolt 435 is adapted to pass through the threaded hole 434, so that the width of the adjustment port 433 is reduced, so as to press the rotating shaft 42 into the mounting hole 432.

[0048] A stop screw 6 is provided on one side of the fixed cover 1. One end of the stop screw 6 is adapted to abut against one side of the shift fork 43. The stop screw 6 is used to limit the rotation of the shift fork 43. The other end of the stop screw 6 extends outside the fixed cover 1 and is connected to a locking nut 61. An oil sealing nut 62 is also provided on the stop screw 6 on the side of the locking nut 61. The locking nut 61 and the oil sealing nut 62 cooperate with each other to prevent lubricating oil from being discharged along the stop screw 6.

[0049] The following describes the composition of the manual drive structure 5. The manual drive structure 5 is rotatably connected to one side of the fixed cover 1 and includes an L-shaped lever 52, which abuts against the first end 31 of the pull rod 3. The manual drive structure 5 includes an operating shaft 51, which is rotatably connected to one side of the fixed cover 1. One end of the operating shaft 51 extends to the bottom of the fixed cover 1 and is fixedly connected to the L-shaped lever 52. The operating shaft 51 is configured to rotate to drive the pull rod 3 to move to one side along the guide post 21. A handle 53 is fixed to the other end of the control shaft 51. It should be further explained that the handle 53 and the L-shaped lever 52 form a "Z"-shaped operating component, which is fixedly connected to the control shaft 51. Rotating the handle 53 drives the L-shaped lever 52 to rotate via the control shaft 51, and the L-shaped lever 52 pushes the pull rod 3 to move. A stop lever is provided on one side of the fixed cover 1, suitable for abutting against the handle 53. When the handle 53 is rotated to abut against the stop lever, the L-shaped lever 52 moves the pull rod 3 to the braking position. The manual drive structure 5 also includes a return spring 54, one end of which is connected to the fixed cover 1, and the other end to the handle 53. When the handle 53 is not subjected to external force, the return spring 54 drives the handle 53 to a certain distance from the stop lever, at which point the L-shaped lever 52 is also separated from the pull rod 3.

[0050] Some embodiments provide a diesel engine including a fuel injection pump that includes a fuel quantity regulating rack, one end of which is connected to a second end 34 of a lever 3 in an actuator as described above; wherein the lever 3 is adapted to move horizontally along a guide post 21 to drive the fuel quantity regulating rack to move to regulate the fuel quantity.

[0051] In summary, by setting up an electric drive structure 4 and a manual drive structure 5, the electric drive structure 4 controls the stroke and braking of the lever, while the manual drive structure 5 controls the lever in an emergency to achieve emergency braking in special situations and improve the functional stability of the actuator during use.

[0052] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0054] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An actuator for a diesel engine, characterized by, include: A fixed cover (1) is fixed with a bracket (2) below it, and a pair of guide posts (21) are fixed on one side of the bracket (2). The pull rod (3) has a pair of guide holes (32) on its surface, and one end of each guide post (21) passes through the corresponding guide hole (32); An electric drive structure (4) is mounted on a fixed cover (1), and its drive end (44) extends below the fixed cover (1) and is connected to the first end (31) of the pull rod (3) via a connecting block (33); The manual drive structure (5) is rotatably connected to one side of the fixed cover (1) and includes an L-shaped lever (52) that abuts against the first end (31) of the pull rod (3); The drive end (44) or L-shaped lever (52) is configured to rotate to move the lever (3) horizontally along the guide post (21).

2. The actuator as described in claim 1, characterized in that, The electric drive structure (4) includes a motor (41) which is located above the fixed cover (1), and its rotating shaft (42) extends below the fixed cover (1) and is connected to a fork (43), with a notch (431) on the fork (43). The connecting block (33) is provided with a movable groove (46), and a ball head column (45) is rotatably connected in the movable groove (46). The position where the ball head column (45) abuts against the inner wall of the notch (431) is the driving end (44). The motor (41) rotates the fork (43) via the rotating shaft (42), thereby driving the ball head column (45) to tilt so that the connecting block (33) drives the pull rod (3) to move horizontally along the guide column (21).

3. The actuator as described in claim 2, characterized in that, The fork (43) is provided with a mounting hole (432) that is adapted to the rotating shaft (42). An adjustment port (433) is provided on the side opposite to the notch (431). A threaded hole (434) is provided at the center of the adjustment port (433). The threaded hole (434) is suitable for threaded connection bolts (435). The bolt (435) is adapted to pass through the threaded hole (434) to reduce the width of the adjustment port (433) so as to press the rotating shaft (42) into the mounting hole (432).

4. The actuator as described in claim 3, characterized in that, A stop screw (6) is provided on one side of the fixed cover (1), one end of which is adapted to abut against one side of the pull fork (43).

5. The actuator as described in claim 4, characterized in that, The other end of the stop screw (6) extends outside the fixed cover (1) and is connected to a locking nut (61). An oil sealing nut (62) is also provided on the stop screw (6) on one side of the locking nut (61).

6. The actuator as described in claim 1, characterized in that, The manual drive structure (5) includes an operating shaft (51), which is rotatably connected to one side of the fixed cover (1). One end of the operating shaft (51) extends to the bottom of the fixed cover (1) and is fixedly connected to the L-shaped lever (52). The control shaft (51) is configured to rotate to drive the pull rod (3) to move to one side along the guide post (21) via the L-shaped lever (52).

7. The actuator as described in claim 6, characterized in that, The other end of the control shaft (51) is fixed with a handle (53); and One side of the fixed cover (1) is provided with a stop rod suitable for abutting against the handle (53).

8. The actuator as described in claim 7, characterized in that, The manual drive structure (5) also includes a return spring (54), one end of which is connected to the fixed cover (1) and the other end of which is connected to the handle (53).

9. A diesel engine characterized by comprising: include: A fuel injection pump, comprising a fuel quantity regulating rack, one end of which is connected to the second end (34) of the lever (3) in the actuator as described in any one of claims 1-8; The pull rod (3) is adapted to move horizontally along the guide post (21) to drive the oil quantity adjusting rack to move to adjust the oil quantity.

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