Accelerator speed regulating mechanism

Abstract

The utility model provides an accelerator speed regulating mechanism, which comprises a mounting plate, an accelerator speed regulating mechanism and an accelerator speed regulating mechanism, the control mechanism comprises a handle, a speed regulating arm and a tension spring, the handle and the speed regulating arm are rotatably connected with the mounting plate, the tension spring is connected with the handle and the speed regulating arm, and rotation of the speed regulating arm is used for adjusting the oil supply amount of the oil injection pump; the limiting mechanism elastically abuts against the end, away from the tension spring, of the speed adjusting arm so as to limit the rotating angle of the speed adjusting arm. According to the accelerator speed regulation mechanism, the speed regulation arm is effectively prevented from exceeding the maximum rotation angle to limit the maximum rotation speed through elastic abutting of the limiting mechanism, an engine and other related parts are protected against overspeed damage, the smoother and more continuous regulation effect is provided, and speed regulation is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle control, in particular to a throttle speed regulating mechanism. Background Art

[0002] The throttle speed control device is an important component on general gasoline engines. It has a great impact on the performance of the engine. It mainly adjusts the fuel supply of the injection pump by adjusting the position of the throttle bracket, thereby achieving the purpose of controlling the engine speed.

[0003] At present, conventional throttle speed control devices adjust the speed by changing the position of the throttle bracket that is contact-connected with the adjusting bolt by screwing the adjusting bolt in or out. However, due to the rigid connection, the adjusting bolt cannot absorb impact well or respond quickly to dynamic changes brought about by the throttle bracket, resulting in the contact surface between the adjusting bolt and the throttle bracket being easily worn, which requires regular inspection and maintenance. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides a throttle speed control mechanism to solve the technical problem in the related technology that the current conventional throttle speed control device adjusts the speed by changing the position of the throttle bracket which is contact-connected with the adjusting bolt by screwing in or out of the adjusting bolt. However, due to the rigid connection, the adjusting bolt cannot absorb impact well or respond quickly to the dynamic changes brought about by the throttle bracket, which causes the contact surface between the adjusting bolt and the throttle bracket to be easily worn and requires regular inspection and maintenance.

[0005] The utility model provides a throttle speed regulating mechanism, comprising:

[0006] A mounting plate, arranged on the engine;

[0007] A control mechanism, comprising a handle and a speed regulating arm rotatably connected to the mounting plate and a tension spring connecting the handle and the speed regulating arm, wherein the rotation of the speed regulating arm is used to adjust the fuel supply of the fuel injection pump; and

[0008] The limiting mechanism elastically abuts against one end of the speed regulating arm away from the tension spring to limit the rotation angle of the speed regulating arm.

[0009] Furthermore, the limiting mechanism includes an outer stud and an inner stud, the outer stud is arranged on the engine, and a central through hole is arranged inside the outer stud, the central through hole is elastically connected to the inner stud, and one end of the inner stud abuts against the speed regulating arm.

[0010] Furthermore, the outer stud is arranged on the engine via at least one adjusting nut.

[0011] Furthermore, a step is provided in the central through hole, the inner stud comprises a screw body and a column arranged on the screw body, a compression spring is provided between the column and the step, and the compression spring is sleeved on the screw body.

[0012] Furthermore, one of the two opposite ends of the screw body is provided with a threaded portion, and the other end is provided with a fixing portion abutting against one end of the speed regulating arm away from the tension spring.

[0013] Furthermore, the threaded portion of the screw body is connected to a limiting nut.

[0014] Furthermore, a rubber cap is arranged outside one end of the outer stud close to the step, and the rubber cap is covered outside the limiting nut.

[0015] Furthermore, the column is provided with an air inlet valve hole and an air outlet valve hole which are connected with the outside, and a one-way valve is provided in each of the air inlet valve hole and the air outlet valve hole.

[0016] Furthermore, the one-way valve includes a steel ball and a spring, the steel ball is movably inserted in the inlet valve hole / the outlet valve hole and is located at the inlet end of the inlet valve hole / the outlet valve hole, and the opposite ends of the spring are respectively connected to the outlet end of the inlet valve hole / the outlet valve hole and the steel ball, so as to press the steel ball against the inlet end of the inlet valve hole / the outlet valve hole.

[0017] Furthermore, a fork shaft is rotatably mounted on the mounting plate, the speed regulating arm is fixedly disposed on the fork shaft, and a fork is fixedly disposed on the fork shaft, and the fork is used to connect to a fuel injection pump so that the speed regulating arm drives the fork shaft to rotate through the handle to adjust the fuel supply of the fuel injection pump.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The throttle speed regulating mechanism of the utility model effectively prevents the speed regulating arm from exceeding the maximum rotation angle to limit the maximum speed through the elastic abutment of the limiting mechanism, protects the engine and other related components from damage by overspeeding, and provides a smoother and continuous regulating effect, making the speed regulation more precise.

[0020] The throttle speed regulating mechanism of the utility model is used for an operator to adjust the speed or power of the engine as required by rotating a handle installed on the mounting plate. The rotation of the handle drives the speed regulating arm to rotate together. The rotation of the speed regulating arm changes the oil supply of the injection pump, thereby affecting the output power and speed of the engine. The tension spring is stretched or compressed to store energy in preparation for resetting. When the speed regulating arm is rotated to the maximum set angle, the limit mechanism elastically abuts against the end of the speed regulating arm away from the tension spring to provide additional resistance to prevent the speed regulating arm from continuing to rotate. This not only limits the maximum rotation angle of the speed regulating arm, but also provides a smooth transition to avoid the impact and damage that may be caused by the hard limit. At the same time, it can also automatically adjust the engine speed fluctuation to minimize the speed fluctuation range. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure diagram of the throttle speed regulating mechanism of the utility model is shown in FIG. Figure I ;

[0022] Figure 2 The structure diagram of the throttle speed regulating mechanism of the utility model is shown in FIG. Figure II ;

[0023] Figure 3 It is a cross-sectional structural diagram of a limit mechanism in a throttle speed regulating mechanism according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the limit mechanism in the throttle speed regulating mechanism of one embodiment of the utility model;

[0025] Figure 5 This is a schematic cross-sectional structure diagram of an inner stud in a limiting mechanism according to an embodiment of the utility model;

[0026] Description of Figure Numbers:

[0027] 10. Mounting plate;

[0028] 20. Control mechanism; 21. Handle; 22. Speed regulating arm; 23. Tension spring; 24. Shift fork shaft; 25. Shift fork;

[0029] 30. Limiting mechanism;

[0030] 31, external stud; 311, center through hole; 312, step;

[0031] 32, internal stud; 321, screw body; 322, column body;

[0032] 33. Adjusting nut; 34. Compression spring; 35. Limiting nut; 36. Rubber cap; 37. Inlet valve hole; 38. Exhaust valve hole;

[0033] 40. One-way valve; 41. Steel ball; 42. Spring.

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0036] In the description of the utility model, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions that the utility model can be implemented, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effect that the utility model can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0037] like Figure 1-2 As shown, an embodiment of the utility model provides a throttle speed regulating mechanism, including a mounting plate 10, a control mechanism 20 and a limiting mechanism 30; specifically, the mounting plate 10 is arranged on the engine; the control mechanism 20 includes a handle 21 and a speed regulating arm 22 rotatably connected to the mounting plate 10 and a tension spring 23 connecting the handle 21 and the speed regulating arm 22, and the rotation of the speed regulating arm 22 is used to adjust the fuel supply of the injection pump; the limiting mechanism 30 elastically abuts against one end of the speed regulating arm 22 away from the tension spring 23 to limit the rotation angle of the speed regulating arm 22.

[0038] In the embodiment of the utility model, the operator adjusts the speed or power of the engine as needed by rotating the handle 21 installed on the mounting plate 10. The rotation of the handle 21 drives the speed regulating arm 22 to rotate together. The rotation of the speed regulating arm 22 changes the oil supply of the injection pump, thereby affecting the output power and speed of the engine. The tension spring 23 is stretched or compressed to store energy in preparation for resetting. When the speed regulating arm 22 rotates to the maximum set angle, the limiting mechanism 30 elastically abuts against the end of the speed regulating arm 22 away from the tension spring 23, providing additional resistance to prevent the speed regulating arm 22 from continuing to rotate. It not only limits the maximum rotation angle of the speed regulating arm 22, but also provides a smooth transition, avoiding the impact and damage that may be caused by hard limiting. At the same time, it can also automatically adjust the engine speed fluctuation to minimize the speed fluctuation range.

[0039] Specifically, Figure 3-4 As shown, in the embodiment of the utility model, the limiting mechanism 30 includes an outer stud 31 and an inner stud 32, the outer stud 31 is arranged on the engine, and a central through hole 311 is arranged inside the outer stud 31, the central through hole 311 is elastically connected to the inner stud 32, one end of the inner stud 32 abuts against the speed regulating arm 22, when the speed regulating arm 22 rotates to a point close to the maximum set angle, the speed regulating arm 22 will contact the inner stud 32, the inner stud 32 abuts against the end of the speed regulating arm 22 away from the tension spring 23 through an elastic element (such as the compression spring 34 described later), providing additional resistance to prevent the speed regulating arm 22 from continuing to rotate, the elastic force of the elastic element enables the inner stud 32 to smoothly abut against the speed regulating arm 22, avoiding the impact and damage that may be caused by the hard limit, and as the speed regulating arm 22 continues to try to rotate, the elastic element will be further compressed, increasing the resistance until the maximum set angle is reached.

[0040] Specifically, Figure 3-4 As shown, in the embodiment of the utility model, the outer stud 31 is arranged on the engine by at least one adjusting nut 33. When the maximum rotation angle of the speed regulating arm 22 needs to be adjusted, the position of the outer stud 31 can be changed by screwing in or out the adjusting nut 33, that is, screwing in the adjusting nut 33 will cause the outer stud 31 to move inward, thereby reducing the maximum rotation angle of the speed regulating arm 22; screwing out the adjusting nut 33 will cause the outer stud 31 to move outward, thereby increasing the maximum rotation angle of the speed regulating arm 22. After the adjustment is completed, tighten the adjusting nut 33 to fix the new position of the outer stud 31. At the same time, in order to ensure that it will not loosen under the influence of vibration and other external factors, two adjusting nuts 33 can be set.

[0041] Specifically, Figure 3As shown, in the embodiment of the utility model, a step 312 is arranged in the central through hole 311, and the inner stud 32 includes a screw body 321 and a column 322 arranged on the screw body 321, and a compression spring 34 is arranged between the column 322 and the step 312, and the compression spring 34 is sleeved on the screw body 321 to provide elastic force, so that the inner stud 32 can smoothly abut the speed regulating arm 22 and limit its maximum rotation angle.

[0042] When the speed regulating arm 22 rotates to a point close to the maximum set angle, the speed regulating arm 22 will contact the column 322 of the inner stud 32. The inner stud 32 abuts against the end of the speed regulating arm 22 away from the tension spring 23 through the compression spring 34, providing additional resistance to prevent the speed regulating arm 22 from continuing to rotate. The elastic force of the compression spring 34 enables the inner stud 32 to smoothly abut against the speed regulating arm 22, avoiding the impact and damage that may be caused by the hard limit. As the speed regulating arm 22 continues to try to rotate, the compression spring 34 will be further compressed, increasing the resistance until the maximum set angle is reached.

[0043] Specifically, Figure 3 As shown, in the embodiment of the utility model, one of the two opposite ends of the screw body 321 is provided with a threaded portion, and the other end is provided with a fixing portion that abuts against the end of the speed regulating arm 22 away from the tension spring 23, and the threaded portion of the screw body 321 is connected to a limiting nut 35. The limiting nut 35 ensures that the inner stud 32 is always in the central through hole 311 of the outer stud 31 to prevent the inner stud 32 from falling off, and also limits the maximum extension length of the inner stud 32 to ensure that the inner stud 32 does not extend excessively, thereby protecting the entire limiting mechanism 30.

[0044] Based on the above scheme, Figure 3-4 As shown, in the embodiment of the utility model, a rubber cap 36 is provided on the outside of one end of the outer stud 31 close to the step 312, and the rubber cap 36 is covered on the outside of the limit nut 35. The rubber cap 36 can provide a good sealing effect to prevent dust, water vapor and other impurities from entering the gap between the inner stud 32 and the adjusting nut 33, thereby protecting them from corrosion and pollution.

[0045] Based on the above scheme, if Figure 5 As shown, in the embodiment of the utility model, the column 322 is provided with an inlet valve hole 37 and an outlet valve hole 38 connected to the outside, and a one-way valve 40 is provided in the inlet valve hole 37 and the outlet valve hole 38. The one-way valve 40 provides gas buffering when the inner stud 32 moves, reduces mechanical shock and wear, and can balance the internal and external pressures, thereby improving the overall stability and reliability of the inner screw.

[0046] Specifically, Figure 5As shown, in the embodiment of the present utility model, the one-way valve 40 includes a steel ball 41 and a spring 42. The steel ball 41 is movably inserted into the intake valve hole 37 / the exhaust valve hole 38 and is located at the intake end of the intake valve hole 37 / the exhaust valve hole 38. The two opposite ends of the spring 42 are respectively connected to the exhaust end of the intake valve hole 37 / the exhaust valve hole 38 and the steel ball 41, and are used to press the steel ball 41 against the intake end of the intake valve hole 37 / the exhaust valve hole 38. Through the steel ball 41 and the spring 42 at the intake valve hole 37 and the exhaust valve hole 38, the inner stud 32 can enter and exit inside the outer stud 31, improving the response speed of the inner stud 32, making the speed regulation process smoother and faster, and at the same time providing gas buffering to reduce mechanical shock and wear.

[0047] Specifically, as Figure 1-2 shown, in the embodiment of the present utility model, a fork shaft 24 is rotatably installed on the mounting plate 10. The speed control arm 22 is fixedly arranged on the fork shaft 24, and a fork 25 is fixedly arranged on the fork shaft 24. The fork 25 is used to connect the fuel injection pump, so that the speed control arm 22 can be driven by the handle 21 to drive the fork shaft 24 to rotate to adjust the fuel supply of the fuel injection pump. When in use, the operator adjusts the engine speed or power as needed by rotating the handle 21 installed on the mounting plate 10. The rotation of the handle 21 drives the speed control arm 22 to rotate together. Since the speed control arm 22 is fixed on the fork shaft 24, the rotation of the speed control arm 22 will drive the fork shaft 24 to rotate together. The fork 25 is fixed on the fork shaft 24, and as the fork shaft 24 rotates, the fork 25 will also move accordingly, thereby adjusting the fuel supply of the fuel injection pump. The tension spring 23 is stretched or compressed to store energy and prepare for resetting.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A throttle speed regulating mechanism, characterized in that, include: A mounting plate (10) is arranged on the engine; A control mechanism (20) comprising a handle (21) and a speed regulating arm (22) rotatably connected to the mounting plate (10), and a tension spring (23) connecting the handle (21) and the speed regulating arm (22), wherein the rotation of the speed regulating arm (22) is used to adjust the oil supply of the fuel injection pump; and The limiting mechanism (30) elastically abuts against one end of the speed regulating arm (22) away from the tension spring (23) to limit the rotation angle of the speed regulating arm (22).

2. The throttle speed control mechanism according to claim 1, characterized in that The limiting mechanism (30) comprises an outer stud (31) and an inner stud (32); the outer stud (31) is arranged on the engine, and a central through hole (311) is arranged inside the outer stud (31); the central through hole (311) is elastically connected to the inner stud (32); one end of the inner stud (32) abuts against the speed regulating arm (22).

3. The throttle speed control mechanism according to claim 2, wherein, The outer stud (31) is arranged on the engine via at least one adjusting nut (33).

4. The throttle speed regulating mechanism according to claim 2, wherein, A step (312) is arranged in the central through hole (311), and the inner stud (32) comprises a screw body (321) and a column (322) arranged on the screw body (321), a compression spring (34) is arranged between the column (322) and the step (312), and the compression spring (34) is sleeved on the screw body (321).

5. The throttle speed control mechanism according to claim 4, characterized in that, One of the two opposite ends of the screw body (321) is provided with a threaded portion, and the other end is provided with a fixing portion that abuts against one end of the speed regulating arm (22) away from the tension spring (23).

6. The throttle speed regulating mechanism according to claim 5, characterized in that, The threaded portion of the screw body (321) is connected to a limiting nut (35).

7. The throttle speed control mechanism according to claim 6, characterized in that, A rubber cap (36) is disposed on the outside of one end of the outer stud (31) close to the step (312), and the rubber cap (36) is covered on the outside of the limiting nut (35).

8. A throttle speed control mechanism according to any one of claims 4-7, characterized in that, The column (322) is provided with an air inlet valve hole (37) and an air outlet valve hole (38) which are communicated with the outside, and a one-way valve (40) is provided in each of the air inlet valve hole (37) and the air outlet valve hole (38).

9. The throttle speed control mechanism according to claim 8, characterized in that, The one-way valve (40) comprises a steel ball (41) and a spring (42); the steel ball (41) is movably inserted into the inlet valve hole (37) / the outlet valve hole (38) and is located at the inlet end of the inlet valve hole (37) / the outlet valve hole (38); the opposite ends of the spring (42) are respectively connected to the outlet end of the inlet valve hole (37) / the outlet valve hole (38) and the steel ball (41), so as to press the steel ball (41) against the inlet end of the inlet valve hole (37) / the outlet valve hole (38).

10. A throttle speed control mechanism according to claim 8 or 9, characterized in that, A shift fork (25) shaft is rotatably mounted on the mounting plate (10), the speed regulating arm (22) is fixedly arranged on the shift fork shaft (24), and a shift fork (25) is fixedly arranged on the shift fork shaft (24), and the shift fork (25) is used to connect to a fuel injection pump, so that the speed regulating arm (22) is driven by the handle (21) to drive the shift fork shaft (24) to rotate, so as to adjust the fuel supply of the fuel injection pump.

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