Self-lubricating roller body of fuel injection pump

By designing a self-lubricating roller body in the fuel injection pump, using the combination of lubricating components and detection components to automatically spray lubricating oil and detect wear, the wear problem caused by friction between the cam and the roller is solved, ensuring the normal operation and timely maintenance of the equipment.

CN222296402UInactive Publication Date: 2025-01-03YANGZHOU TAIHE MASCH CO LTD
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Patent Information

Application Number
CN202421300090.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-01-03
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During long-term use of existing fuel injection pumps, due to the friction between the cam and the roller, it is difficult to detect the lubricant oil margin in time, resulting in insufficient lubrication, affecting the normal operation of the equipment.

Method used

A self-lubricating roller body of the oil injection pump is designed, using a combination of lubricating components and detection components. Through the extrusion of gears and movable blocks, lubricating oil is automatically sprayed to reduce friction, and the contact surface wear and jam are detected through the counter. Condition.

Benefits of technology

It realizes automatic lubrication of the contact surfaces of the roller and cam during the fuel injection pump, reduces friction, extends the service life of the equipment, and promptly detects wear and jams to ensure the normal operation of the pump body.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of fuel injection pumps, and discloses a fuel injection pump self-lubricating roller body which comprises a shell, a roller is movably installed in the shell, a cam is rotatably installed on one side of the shell, a connecting shaft is fixedly installed on the cam, a first gear is fixedly installed on the connecting shaft, and a second gear is rotatably installed on one side of the connecting shaft. The second gear is meshed with the first gear, a lubricating assembly is arranged on the first gear, and a detection assembly is arranged on the second gear. By arranging the lubricating assembly, the second movable block drives the extrusion shaft to move towards the interior of the inner barrel and extrude the elastic bag, the elastic bag is compressed after being extruded by external force, lubricating oil is sprayed out to the surface of the cam through the connecting pipe and the oil outlet hole, and when the lubricating oil is sprayed out, the roller makes contact with the cam; at the moment, the contact surface of the cam and the roller can be coated with lubricating oil to guarantee the lubricating effect of the contact surface of the roller and the cam, friction is reduced, and use of the pump body is guaranteed.
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Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection pumps, in particular to a self-lubricating roller body of a fuel injection pump. Background Art

[0002] The fuel injection pump assembly is usually a whole composed of the fuel injection pump, the speed governor and other components installed together. When the fuel injection pump is working, the cam on the camshaft drives the roller to push the tappet up and down, thereby pushing the piston to pressurize the fuel, thereby obtaining a higher fuel pressure;

[0003] Usually, there is a certain amount of friction when the cam contacts the roller. Long-term friction will cause wear of the cam and the roller. Therefore, it is necessary to regularly add lubricating oil to the cam and the roller to ensure the lubrication effect and reduce friction. The lubricating oil is gradually consumed during the operation of the cam and the roller, and it is difficult for the staff to observe the remaining lubricating oil in time, so it is difficult to ensure that the lubricating oil is added in time when the lubricating oil is exhausted.

[0004] Therefore, we propose a self-lubricating roller body for a fuel injection pump. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a self-lubricating roller body for an oil injection pump.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a self-lubricating roller body of an oil injection pump, comprising a housing, a roller is movably installed inside the housing, a cam is rotatably installed on one side of the housing, a connecting shaft is fixedly installed on the cam, a gear 1 is fixedly installed on the connecting shaft, a gear 2 is rotatably installed on one side of the connecting shaft, the gear 2 and the gear 1 are meshed with each other, a lubrication component is arranged on the gear 1, and a detection component is arranged on the gear 2;

[0007] The lubrication assembly comprises an inner cylinder which is fixedly mounted inside the connecting shaft, an elastic bag and a connecting pipe being arranged on the inner cylinder, six oil outlet holes being opened on the cam, and six movable blocks 2 and an extrusion shaft being arranged on the gear 1.

[0008] Preferably, the elastic bag is fixedly mounted inside the inner tube, six connecting pipes are fixedly mounted on the elastic bag, and the oil outlet holes are connected to the elastic bag via the connecting pipes.

[0009] Preferably, the movable block 2 is movably mounted on the gear 1, the movable block 2 is evenly spaced on the gear 1, a groove for mounting the movable block 2 is provided on the gear 1, the extrusion shaft is fixedly mounted on one end of the movable block 2 extending into the groove, the extrusion shaft passes through the gear 1 and the interior of the connecting shaft and extends to the interior of the inner cylinder.

[0010] Preferably, the lubrication assembly also includes a second spring, which is fixedly mounted inside the groove, one end of which is fixedly connected to the second movable block, an oil filling box is fixedly mounted on the connecting shaft, and the oil filling box is connected to the elastic bag through a pipe.

[0011] Preferably, the detection component includes a movable block 1, which is evenly and movably mounted on gear 2. The movable block 1 is arranged between every two adjacent gear teeth on gear 2. A recess for mounting the movable block 1 is provided on gear 2, and a counter is fixedly mounted inside the recess.

[0012] Preferably, the detection component further comprises a spring 1, which is fixedly mounted inside the recess, and a pressing plate is fixedly mounted on one end of the movable block 1 extending into the recess.

[0013] Preferably, one end of the spring one is fixedly connected to the movable block one, the pressing plate is fixedly connected to one end of the spring one, a connecting ring is fixedly installed inside the recess, and the connecting ring is movably connected to the pressing plate.

[0014] The utility model provides a self-lubricating roller body of an oil injection pump, which has the following improvements and advantages compared with the prior art: by providing a lubrication component, when the cam rotates, the gear teeth on the second gear contact with the movable block two on the first gear and squeeze the movable block two, the movable block two drives the extrusion shaft to move in the inner direction of the inner cylinder and squeeze the elastic bag, the elastic bag is compressed after being squeezed by the external force and sprays the lubricating oil to the surface of the cam through the connecting pipe and the oil outlet hole, when the lubricating oil is sprayed, the roller contacts the cam, and at this time the contact surface of the cam and the roller can be coated with the lubricating oil to ensure the lubrication effect of the contact surface of the roller and the cam, so as to reduce friction and ensure the use of the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 A schematic diagram of the structure of a self-lubricating roller body of an oil injection pump proposed by the utility model;

[0017] Figure 2 A schematic diagram of the structure of a detection component in a self-lubricating roller body of an injection pump proposed by the utility model;

[0018] Figure 3 A schematic diagram of the structure of a lubrication assembly in a self-lubricating roller body of an oil injection pump proposed by the utility model;

[0019] Figure 4 The utility model discloses a schematic diagram of the installation of a connecting pipe in a self-lubricating roller body of an oil injection pump.

[0020] Legend:

[0021] 1. Housing; 2. Roller; 3. Cam; 4. Connecting shaft; 5. Gear 1; 6. Oil filling box; 7. Gear 2; 8. Movable block 1; 9. Counter; 10. Connecting ring; 11. Pressing plate; 12. Spring 1; 13. Inner cylinder; 14. Movable block 2; 15. Spring 2; 16. Extrusion shaft; 17. Elastic bag; 18. Oil outlet; 19. Connecting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] A self-lubricating roller body of an injection pump, such as Figure 1 - Figure 4 As shown, it includes a shell 1, a roller 2 is movably installed inside the shell 1, a cam 3 is rotatably installed on one side of the shell 1, a connecting shaft 4 is fixedly installed on the cam 3, the connecting shaft 4 is rotatably installed on one side of the shell 1, a gear 1 5 is fixedly installed on the connecting shaft 4, a gear 2 7 is rotatably installed on one side of the connecting shaft 4, the gear 2 7 is meshed with the gear 1 5, a lubrication component is arranged on the gear 1 5, the lubrication component can lubricate the roller 2 and the cam 3 when the cam 3 rotates to reduce contact friction, a detection component is arranged on the gear 2 7, the detection component can detect the wear between the cam 3 and the roller 2 when the cam 3 rotates; by providing the lubrication component, when the injection pump is working, the lubrication component can realize the lubrication of the roller 2 and the cam 3 to reduce the friction of the contact surface of the roller 2 and the cam 3 and ensure the normal operation of the pump body, and at the same time, a detection component is provided, which can detect the wear of the contact surface of the roller 2 and the cam 3 and whether the pump body is stuck when it is running.

[0024] Furthermore, the lubrication assembly includes an inner cylinder 13, which is fixedly mounted inside the connecting shaft 4, and an elastic bag 17 is fixedly mounted inside the inner cylinder 13. The elastic bag 17 is a hollow structure, and is made of elastic rubber material. Lubricating oil is poured into the elastic bag 17, and six connecting pipes 19 are fixedly mounted on the elastic bag 17. Six oil outlet holes 18 are provided on the cam 3, and the oil outlet holes 18 are connected to the elastic bag 17 through the connecting pipes 19. Six movable blocks 2 14 are movably mounted on the gear 1 5. The movable blocks 2 14 are evenly spaced on the gear 1 5, and a groove for mounting the movable blocks 2 14 is provided on the gear 1 5. A spring 2 15 is fixedly mounted inside the groove, and one end of the spring 2 15 is fixedly connected to the movable block 2 14. An extrusion shaft 16 is fixedly mounted on one end of the movable block 2 14 extending to the inside of the groove, and the extrusion shaft 16 passes through the inside of the gear 1 5 and the connecting shaft 4 and extends to the inner cylinder 13 , the extrusion shaft 16 can contact and extrude the elastic bag 17, an oil filling box 6 is fixedly installed on the connecting shaft 4, the oil filling box 6 is connected to the elastic bag 17 through a pipeline, an oil filling pipe is fixedly installed on the oil filling box 6, a sealing plug is provided on the oil filling pipe, and lubricating oil can be added to the oil filling box 6 and the elastic bag 17 through the oil filling pipe; by providing a lubrication component, when the cam 3 rotates, the gear teeth on the gear 2 7 contact and extrude the movable block 2 14 on the gear 1 5, and the movable block 2 14 drives the extrusion shaft 16 to move toward the inner direction of the inner cylinder 13 and extrude the elastic bag 17, and the elastic bag 17 is compressed after being squeezed by external force and sprays lubricating oil to the surface of the cam 3 through the connecting pipe 19 and the oil outlet hole 18. When the lubricating oil is sprayed, the roller 2 contacts the cam 3. At this time, the contact surface of the cam 3 and the roller 2 can be coated with lubricating oil to ensure the lubrication effect of the contact surface of the roller 2 and the cam 3, so as to reduce friction and ensure the use of the pump body.

[0025] Furthermore, the detection component includes a movable block 8, which is evenly and movably mounted on the gear 2 7, and the movable block 8 is arranged between every two adjacent gear teeth on the gear 2 7. A recess for mounting the movable block 8 is opened on the gear 2 7, and a counter 9 is fixedly mounted inside the recess, and the counter 9 is electrically connected to the external controller. A spring 12 is fixedly mounted inside the recess, and one end of the spring 12 is fixedly connected to the movable block 8. A pressing plate 11 is fixedly mounted on one end of the movable block 8 extending inside the recess, and the pressing plate 11 is fixedly connected to one end of the spring 12. A connecting ring 10 is fixedly mounted inside the recess, and the connecting ring 10 is movably connected to the pressing plate 11. By providing the detection component, when the fuel injection pump is working, the cam 3 rotates to drive the roller 2 to move to drive the tappet and The plunger moves, and when the cam 3 rotates, it drives the connecting shaft 4, gear 1 5 and gear 2 7 to rotate synchronously. When gear 1 5 and gear 2 7 rotate, the gear teeth on gear 1 5 and the movable block 1 8 on gear 2 7 contact each other. The movable block 1 8 is squeezed and moved by external force and presses the corresponding counter 9. When the cam 3 rotates to the right position, the counter 9 presses and counts to reach the target data. When the detection counter 9 presses and counts to reach the target data, it means that the cam 3 has rotated to the right position. If the piston movement fails to apply the target pressure to the fuel at this time, it means that the roller 2 and the cam 3 may be worn. If the counter 9 does not reach the target data during the rotation of the cam 3, it means that the drive may be stuck and the staff needs to perform maintenance and repairs.

[0026] The working principle of the utility model is as follows: when the fuel injection pump is working, the cam 3 rotates to drive the roller 2 to move so as to drive the tappet and the plunger inside the housing 1 to move. When the cam 3 rotates, the connecting shaft 4, the gear 1 5 and the gear 2 7 are driven to rotate synchronously. When the gear 1 5 and the gear 2 7 rotate, the gear teeth on the gear 1 5 and the movable block 1 8 on the gear 2 7 contact each other. The movable block 1 8 is squeezed and moves by external force and presses the corresponding counter 9. When the cam 3 rotates to the right position, the counter 9 presses and counts to reach the target data. When the detection counter 9 presses and counts to reach the target data, it means that the cam 3 rotates to the right position. If the piston movement fails to apply the target pressure to the fuel at this time, it means that the roller 2 and the cam 3 may be at this time. Wear occurs. If the counter 9 does not reach the target data during the rotation of the cam 3, it means that the drive may be stuck at this time, and the staff needs to perform maintenance and repairs. When the cam 3 rotates, the gear teeth on the gear 2 7 contact and squeeze the movable block 2 14 on the gear 1 5. The movable block 2 14 drives the extrusion shaft 16 to move toward the inner direction of the inner tube 13 and squeeze the elastic bag 17. The elastic bag 17 is compressed after being squeezed by the external force and sprays lubricating oil to the surface of the cam 3 through the connecting pipe 19 and the oil outlet 18. When the lubricating oil is sprayed, the roller 2 contacts the cam 3. At this time, the contact surface of the cam 3 and the roller 2 can be coated with lubricating oil to ensure the lubrication effect of the contact surface of the roller 2 and the cam 3, so as to reduce friction and ensure the use of the pump body.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-lubricating roller body for an oil injection pump, comprising a housing (1), a roller (2) movably mounted inside the housing (1), a cam (3) rotatably mounted on one side of the housing (1), a connecting shaft (4) fixedly mounted on the cam (3), characterized in that: The connecting shaft (4) is fixedly mounted with a gear 1 (5), a gear 2 (7) is rotatably mounted on one side of the connecting shaft (4), the gear 2 (7) and the gear 1 (5) are meshed with each other, a lubrication component is arranged on the gear 1 (5), and a detection component is arranged on the gear 2 (7); The lubrication assembly comprises an inner cylinder (13), the inner cylinder (13) is fixedly mounted inside the connecting shaft (4), an elastic bag (17) and a connecting pipe (19) are arranged on the inner cylinder (13), six oil outlet holes (18) are opened on the cam (3), and six movable blocks (14) and an extrusion shaft (16) are arranged on the gear (5).

2. The self-lubricating roller body of a fuel injection pump according to claim 1, characterized in that: The elastic bag (17) is fixedly mounted inside the inner tube (13), six connecting pipes (19) are fixedly mounted on the elastic bag (17), and the oil outlet hole (18) is connected to the elastic bag (17) via the connecting pipes (19).

3. The self-lubricating roller body of a fuel injection pump according to claim 1, characterized in that: The six movable blocks (14) are movably mounted on the gear (5). The movable blocks (14) are evenly spaced and arranged on the gear (5). A groove for mounting the movable blocks (14) is provided on the gear (5). The extrusion shaft (16) is fixedly mounted on one end of the movable block (14) extending into the groove. The extrusion shaft (16) penetrates the gear (5) and the interior of the connecting shaft (4) and extends into the interior of the inner cylinder (13).

4. The self-lubricating roller body of a fuel injection pump according to claim 3, characterized in that: The lubrication assembly further comprises a second spring (15), the second spring (15) being fixedly mounted inside the groove, one end of the second spring (15) being fixedly connected to the second movable block (14), an oil filling box (6) being fixedly mounted on the connecting shaft (4), and the oil filling box (6) being connected to the elastic bag (17) via a pipeline.

5. The self-lubricating roller body of a fuel injection pump according to claim 1, characterized in that: The detection assembly comprises a movable block (8), the movable block (8) being evenly and movably mounted on the gear (7), the movable block (8) being arranged between every two adjacent gear teeth on the gear (7), the gear (7) being provided with a recess for mounting the movable block (8), and a counter (9) being fixedly mounted inside the recess.

6. The self-lubricating roller body of a fuel injection pump according to claim 5, characterized in that: The detection assembly also includes a spring 1 (12), which is fixedly installed inside the recess, and a pressing plate (11) is fixedly installed on one end of the movable block 1 (8) extending into the recess.

7. The self-lubricating roller body of a fuel injection pump according to claim 6, characterized in that: One end of the spring one (12) is fixedly connected to the movable block one (8), the pressing plate (11) is fixedly connected to one end of the spring one (12), a connecting ring (10) is fixedly installed inside the recess, and the connecting ring (10) is movably connected to the pressing plate (11).