Speed regulating device

Abstract

The utility model relates to the technical field of fuel injection pump mechanical speed regulators, and provides a speed regulating device which comprises a rear shell, a speed regulating torsion spring, a speed regulating lever, a speed regulating arm, a correcting device, an intermediate shaft, a buffering device, a connecting pin, a shaft sleeve, a supporting block, a speed regulating sleeve, a flying block, a toothed bar return spring, a toothed bar, a connecting rod, a limiting screw and a speed regulating shaft. The speed regulation lever and the speed regulation arm are rotationally arranged on the rear shell through the intermediate shaft, the connecting pin is arranged on the upper side of the speed regulation arm, and the shaft sleeve is arranged on the connecting pin; through the hemispherical boss arranged on the speed regulation arm, the spherical boss design on the speed regulation arm and the contact mode with the speed regulation lever, friction force and mechanical impact are reduced, and therefore the stability and stability of the speed regulation process are improved. Meanwhile, the buffering device can effectively reduce vibration and impact in the speed regulation process, and the stability of the speed regulation device is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical speed regulators for fuel injection pumps, in particular to a speed regulating device. Background Art

[0002] The speed regulating arm is a key component in the diesel engine speed regulating system, usually located inside the diesel engine speed governor. It is connected to the speed regulating rod and is a bridge between the speed regulating mechanism and the fuel supply system. It is used to transmit the speed regulating signal and control the position of the fuel supply lever, thereby achieving the adjustment of the diesel engine speed.

[0003] At present, the speed regulating arm in the existing speed regulating system is usually a casting, and an insert is inlaid on the wear-resistant part of the speed regulating arm required by the speed regulating arm. The insert is inserted when the speed regulating arm is cast. The manufacturing method of this speed regulating arm has low production efficiency and low consistency of finished products, so that the precision of the finished product of the speed regulating arm cannot be guaranteed, which in turn affects the precise control of the fuel supply of the diesel engine. In addition, the low qualified rate leads to a high energy consumption ratio in the production of the speed regulating arm, which is not in line with the environmentally friendly manufacturing method. In view of this, this application is specially proposed. Utility Model Content

[0004] This application proposes a speed regulating device to solve the technical problem that the speed regulating arm in the prior art is usually a casting, the production efficiency and the consistency of the finished product are not high, so the precision of the finished product of the speed regulating arm cannot be guaranteed, which in turn affects the precise control of the fuel supply of the diesel engine, and the low qualified rate leads to a high energy consumption ratio during the production of the speed regulating arm, which is not in line with the environmentally friendly manufacturing method. The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A speed regulating device comprises a rear shell, a speed regulating torsion spring, a speed regulating lever, a speed regulating arm, a correction device, an intermediate shaft, a buffer device, a connecting pin, a shaft sleeve, a control device, a gear rod return spring, a gear rod, a connecting rod and a torque regulating device, wherein the speed regulating lever and the speed regulating arm are both rotatably arranged on the rear shell through the intermediate shaft, a hemispherical boss is provided on the side of the speed regulating arm away from the shaft sleeve, a flat surface of the hemispherical boss on the speed regulating arm contacts and cooperates with the speed regulating lever, the connecting pin is arranged on the upper side of the speed regulating arm, the shaft sleeve is arranged on the connecting pin, the correction device and the buffer device are both arranged on one side of the rear shell, the correction device contacts with one side of the shaft sleeve, the buffer device contacts and cooperates with the convex surface on the hemispherical boss on the speed regulating arm, the gear rod is slidably arranged in the rear shell, the return spring is sleeved on the gear rod, the connecting rod is rotatably connected between the gear rod and the speed regulating lever, the torque regulating device is arranged in the rear shell, and the torque regulating device cooperates with the speed regulating lever.

[0006] Preferably, the correction device comprises a correction component and a corrector push rod, the correction component is arranged on the side of the rear shell, the corrector push rod is slidably arranged in the correction component, and one side of the sleeve is in contact with the corrector push rod.

[0007] Preferably, the buffer device includes a buffer component and a buffer shaft, the buffer component is arranged on a side of the rear shell side close to the correction component, the buffer shaft is arranged in the buffer component, and the buffer shaft contacts the convex surface on the hemispherical boss on the speed regulating arm.

[0008] Preferably, the control device comprises a support block, a speed regulating sleeve and a flying weight, the speed regulating sleeve is arranged on the rear shell, the flying weight is arranged in the rear shell, the support block is arranged on the speed regulating sleeve, and the support block is connected to the speed regulating lever.

[0009] Preferably, the torque adjustment device includes a limit screw and a speed regulating shaft, the speed regulating shaft is arranged on the rear shell, the limit screw is arranged on the speed regulating shaft, the speed regulating torsion spring is sleeved on the speed regulating shaft, and the other side of the sleeve is connected to the speed regulating torsion spring.

[0010] Preferably, a sealing cover is provided between the rear shell and the buffer component.

[0011] Preferably, the flying weight is in contact with the speed regulating sleeve.

[0012] Preferably, the speed regulating lever and the speed regulating arm are both stamped parts.

[0013] Compared with the prior art, the beneficial effects of the utility model include: the speed regulating lever and the speed regulating arm are stamped parts, the energy consumption in the manufacturing process of the speed regulating arm is lower, and the manufacturing cost is reduced; by providing a hemispherical boss on the speed regulating arm, the spherical boss design on the speed regulating arm and the contact mode with the speed regulating lever, the friction and mechanical impact are reduced, thereby improving the stability and stability of the speed regulating process; at the same time, the buffer device can effectively reduce the vibration and impact in the speed regulating process, further enhancing the stability of the speed regulating device;

[0014] Through the precise coordination of the speed regulating lever and the speed regulating arm, and the coordinated action of the speed regulating torsion spring, the correction device and the buffer device, the speed regulating device can achieve precise control of the fuel supply of the diesel engine, thereby ensuring the stable operation of the diesel engine, improving fuel utilization and reducing pollutant emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the speed regulating device of the utility model;

[0016] Figure 2 This is a schematic diagram of the speed regulating arm of the utility model;

[0017] Figure 3 It is a schematic diagram of the speed regulating lever of the utility model.

[0018] In the figure: 1, rear shell; 2, speed control torsion spring; 3, speed control lever; 4, speed control arm; 41, hemispherical boss; 5, correction component; 6, corrector top rod; 7, intermediate shaft; 8, sealing cover; 9, buffer component; 10, buffer shaft; 11, connecting pin; 12, bushing; 13, supporting block; 14, speed control sleeve; 15, flying block; 16, return spring; 17, gear rod; 18, connecting rod; 19, limit screw; 20, speed control shaft. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0022] Please see attached Figure 1-3A speed regulating device, characterized in that it includes a rear shell 1, a speed regulating torsion spring 2, a speed regulating lever 3, a speed regulating arm 4, a correction device, an intermediate shaft 7, a buffer device, a connecting pin 11, a sleeve 12, a support block 13, a speed regulating sleeve 14, a fly block 15, a gear rod return spring 16, a gear rod 17, a connecting rod 18, a limit screw 19 and a speed regulating shaft 20, the speed regulating lever 3 and the speed regulating arm 4 are both rotatably arranged on the rear shell 1 through the intermediate shaft 7, the connecting pin 11 is arranged on the upper side of the speed regulating arm 4, the sleeve 12 is arranged on the connecting pin 11, a hemispherical boss 41 is arranged on the side of the speed regulating arm 4 away from the sleeve 12, and a flat surface of the hemispherical boss 41 on the speed regulating arm 4 contacts and cooperates with the speed regulating lever 3, the correction device and the buffer device are both arranged on one side of the rear shell 1, and the correction device The arrangement cooperates with the shaft sleeve 12, the buffer device cooperates with the speed regulating arm 4, the speed regulating sleeve 14 is arranged on the side of the rear shell 1 away from the gear rod 17, the flying block 15 is arranged in the rear shell 1 near the speed regulating sleeve 14, the flying block 15 contacts and cooperates with the speed regulating sleeve 14, the supporting block 13 is arranged on the speed regulating sleeve 14, the supporting block 13 is connected to the speed regulating lever 3, the gear rod 17 is slidably arranged in the rear shell 1 on the side away from the correction component 5, the return spring 16 is sleeved on the gear rod 17, the connecting rod 18 is rotatably connected between the gear rod 17 and the speed regulating lever 3, the speed regulating shaft 20 is arranged on the rear shell 1 near the speed regulating lever 3, the limit screw 19 is arranged on the speed regulating shaft 20, the speed regulating torsion spring 2 is sleeved on the speed regulating shaft 20, and the other side of the shaft sleeve 12 is connected to the speed regulating torsion spring 2.

[0023] By adopting the above technical scheme, the speed regulating lever 3 and the speed regulating arm 4 are the key components in the speed regulating work of the diesel engine, which are responsible for controlling the movement of the gear rod 17, and the gear rod 17 is connected to the speed regulating lever 3 through a connecting rod to directly control the fuel supply of the diesel engine. The return spring 16 provides elastic force to enrich the fuel when the diesel engine is started. The speed regulating torsion spring 2 is connected to the speed regulating arm 4 through a connecting pin 11 and a sleeve 12 to provide necessary torque; the correction device contacts and cooperates with the speed regulating arm 4 to correct the speed regulating process, and the buffer device contacts and cooperates with the sleeve 12 on the speed regulating arm 4 to play a buffering role; according to the speed change of the diesel engine, the torque of the speed regulating torsion spring 2 can be adjusted by adjusting the rotation angle of the speed regulating shaft 20 and the position of the limit screw 19. According to the speed change of the diesel engine, under the control of centrifugal force, the flying weight 15 controls the movement of the speed regulating lever 3 through the speed regulating sleeve 14 and the supporting block 13.

[0024] In some embodiments, the correction device includes a correction component 5 and a corrector push rod 6. The correction component 5 is arranged on the side of the rear shell 1. The corrector push rod 6 is slidably arranged in the correction component 5. One side of the sleeve 12 contacts the corrector push rod 6.

[0025] By adopting the above technical solution, when the oil supply of the speed regulating device needs to be fine-tuned, the contact position between the sleeve 12 and the corrector push rod 6 can be changed by adjusting the position of the corrector push rod 6 in the correction component 5, thereby achieving fine-tuning of the speed regulating arm 4 and further adjusting the oil supply.

[0026] In some embodiments, the buffer device includes a buffer component 9 and a buffer shaft 10. The buffer component 9 is arranged on the side of the rear shell 1 close to the correction component 5. The buffer shaft 10 is arranged in the buffer component 9. The buffer shaft 10 is connected to the convex surface of the hemispherical boss 41 on the speed regulating arm 4.

[0027] By adopting the above technical solution, when the speed regulating arm 4 rotates rapidly during the speed regulating process, the hemispherical boss 41 thereon will contact the buffer shaft 10. Through the buffering effect of the buffer shaft 10, the rotation speed of the speed regulating arm 4 can be reduced, the mechanical shock and vibration can be reduced, and the stability and reliability of the speed regulating device can be protected.

[0028] In some embodiments, a sealing cover 8 is provided between the rear shell 1 and the buffer component 9 .

[0029] By adopting the above technical solution, the setting of the sealing cover 8 can prevent external dust, impurities, etc. from entering the interior of the buffer component 9, ensuring the normal operation and service life of the buffer device. At the same time, the sealing cover 8 can also enhance the connection stability between the rear shell 1 and the buffer component 9.

[0030] Working principle:

[0031] When the diesel engine is started, the elastic force of the gear rod return spring 16 is greater than the centrifugal force of the flyweight 15, pushing the gear rod 17 to move to the right, thereby obtaining the starting oil enrichment amount; after starting, the speed increases, the flyweight 15 opens under the action of centrifugal force, and drives the support block 13 through the speed regulating sleeve 14, thereby driving the speed regulating lever 3 to rotate counterclockwise around the intermediate shaft 7, and the movement of the speed regulating lever 3 drives the gear rod 17 to move in the oil reduction direction through the connecting rod 18. At the same time, the speed regulating lever 3 is connected with the outer surface feature 2 of the speed regulating arm 4 through the inner surface feature 1, and continues to drive the gear rod 17 to move in the oil reduction direction through the connecting rod 18 until the centrifugal force of the flyweight 15 is balanced with the elastic force of the gear rod return spring 16 and the torsional force of the speed regulating torsion spring 2, so that the diesel engine can run stably;

[0032] According to the working conditions, by rotating the limit screw 19 installed on the speed control shaft 20, the speed control torsion spring 2 is driven to twist and increase force. This force acts on the left side of the sleeve 12 on the connecting pin 11 installed on the speed control arm 4. By adjusting the rotation angle of the speed control shaft 20 and the position of the limit screw 19, the torque of the speed control torsion spring 2 can be changed, thereby realizing high and low speed control of the engine.

[0033] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A speed regulating device, characterized in that: The invention comprises a rear housing (1), a speed regulating torsion spring (2), a speed regulating lever (3), a speed regulating arm (4), a correction device, an intermediate shaft (7), a buffer device, a connecting pin (11), a shaft sleeve (12), a control device, a gear rod return spring (16), a gear rod (17), a connecting rod (18) and a torque adjustment device, wherein the speed regulating lever (3) and the speed regulating arm (4) are both rotatably arranged on the rear housing (1) via the intermediate shaft (7), a hemispherical boss (41) is arranged on a side of the speed regulating arm (4) away from the shaft sleeve (12), a flat surface of the hemispherical boss (41) on the speed regulating arm (4) contacts and cooperates with the speed regulating lever (3), and the connecting pin (11) is arranged on the speed regulating lever (3). The arm (4) is on the upper side, the sleeve (12) is arranged on the connecting pin (11), the correction device and the buffer device are both arranged on one side of the rear shell (1), the correction device contacts one side of the sleeve (12), the buffer device is connected to the convex surface on the hemispherical boss (41) on the speed regulating arm (4), the gear rod (17) is slidably arranged in the rear shell (1), the return spring (16) is sleeved on the gear rod (17), the connecting rod (18) is rotatably connected between the gear rod (17) and the speed regulating lever (3), and the torque regulating device is arranged in the rear shell (1), and the torque regulating device cooperates with the speed regulating lever (3).

2. A speed regulating device according to claim 1, characterized in that: The correction device comprises a correction component (5) and a corrector top rod (6); the correction component (5) is arranged on the side of the rear housing (1); the corrector top rod (6) is slidably arranged in the correction component (5); and one side of the shaft sleeve (12) is in contact with the corrector top rod (6).

3. A speed regulating device according to claim 2, characterized in that: The buffer device comprises a buffer component (9) and a buffer shaft (10); the buffer component (9) is arranged on a side of the rear housing (1) close to the correction component (5); the buffer shaft (10) is arranged inside the buffer component (9); and the buffer shaft (10) is connected to a convex surface on a hemispherical boss (41) on the speed regulating arm (4).

4. A speed regulating device according to claim 1, characterized in that: The control device comprises a support block (13), a speed regulating sleeve (14) and a flying weight (15); the speed regulating sleeve (14) is arranged on the rear housing (1); the flying weight (15) is arranged in the rear housing (1); the support block (13) is arranged on the speed regulating sleeve (14); and the support block (13) is connected to the speed regulating lever (3).

5. A speed regulating device according to claim 1, characterized in that: The torque adjustment device comprises a limit screw (19) and a speed regulating shaft (20); the speed regulating shaft (20) is arranged on the rear housing (1); the limit screw (19) is arranged on the speed regulating shaft (20); the speed regulating torsion spring (2) is sleeved on the speed regulating shaft (20); and the other side of the shaft sleeve (12) is connected to the speed regulating torsion spring (2).

6. A speed regulating device according to claim 3, characterized in that: A sealing cover (8) is provided between the rear shell (1) and the buffer component (9).

7. A speed regulating device according to claim 4, characterized in that: The flying weight (15) is in contact with the speed regulating sleeve (14).

8. A speed regulating device according to claim 1, characterized in that: The speed regulating lever (3) and the speed regulating arm (4) are both stamped parts.

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