A device for stopping the pump of a single injection pump for high-power medium-speed diesel engines

Abstract

The application relates to the technical field of diesel engine testing and debugging, and discloses a device for stopping a single injection pump of a high-power medium-speed diesel engine, which comprises a shaft sleeve, an eccentric flange is fixedly connected to the outer portion of the front end of the shaft sleeve, a positioning column is fixedly connected to the outer side of the inner portion of the shaft sleeve, a shaft is movably sleeved in the inner portion of the shaft sleeve, and an eccentric shaft head is fixedly connected to the middle portion of the end portion of the shaft. The device for stopping the single injection pump of the high-power medium-speed diesel engine is characterized in that the device shaft is movably sleeved in the inner portion of the shaft sleeve, the positioning column is movably sleeved in the inner portion of the shaft, the shaft can be limited in the inner portion of the shaft sleeve, the problem that the shaft rotates around the shaft sleeve is avoided, the threaded column is rotated, the shaft can be pushed to extend or retract in the inner portion of the shaft sleeve, the spacing between the shaft and the shaft sleeve can be adjusted, the adjustment according to the depth of the reset piston is facilitated, and reset pistons with different depths can be spliced and limited.

Description

Technical Field

[0001] This invention relates to the field of diesel engine testing and debugging technology, specifically to a device for stopping the unit injection pump of a high-power medium-speed diesel engine. Background Technology

[0002] During the testing and commissioning of a certain type of high-power marine diesel engine, according to the relevant requirements of the classification society and the national military standard, it is necessary to conduct a cylinder shutdown test on the diesel engine. In order to meet the requirements of this test, it is necessary to develop a device for quickly stopping the pump. Thus, a device for stopping the single injection pump of a high-power medium-speed diesel engine was developed.

[0003] In existing devices for stopping the unit injection pump of high-power medium-speed diesel engines, the pump body is processed with varying outer wall thicknesses and different lengths of the stopping device. This results in the stopping device not being able to extend accurately into the pump body, affecting the flexibility of the device's operation. Furthermore, when the device stops the pump, it needs to rotate the stopping device, but the wires and pipes installed on the outside of the pump body can obstruct the angle that the stopping device can deflect. Summary of the Invention

[0004] To address the shortcomings of existing devices for stopping unit injection pumps in high-power medium-speed diesel engines, this invention provides a device for stopping unit injection pumps in high-power medium-speed diesel engines. This device features the advantage of adjusting the shaft length by rotating a threaded column, which drives the threaded column and bushing to move in a threaded motion, facilitating the extension of the baffle plate into the stopping device. Simultaneously, the device has gears between the first and second rotating disks, and between the second and third rotating disks, allowing for unidirectional rotation of the device and the back-and-forth rotation of the handle. This allows the shaft to rotate even with a limited range of handle movement, thus solving the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a device for stopping a unit injection pump of a high-power medium-speed diesel engine, comprising a bushing, an eccentric flange fixedly connected to the outer front end of the bushing, a positioning pin fixedly connected to the outer side of the inner side of the bushing, a shaft movably sleeved inside the bushing, an eccentric shaft head fixedly connected to the middle of the shaft end, a baffle plate installed on the upper part of the eccentric shaft head, a threaded post threadedly connected to the outer side of the shaft, a first rotating disk fixedly connected to the outer side of the bushing, a first limiting disk fixedly connected to the middle of the outer side of the first rotating disk, and the first limiting disk being movably... A second rotating disk is fitted onto the outside of the first rotating disk. A second limiting disk is fixedly connected to the center of the outer part of the second rotating disk. A third rotating disk is movably fitted onto the outer part of the second limiting disk. A first movable column is movably fitted onto the inside of the first rotating disk. A second movable column is movably fitted onto the inside of the second rotating disk. A third movable column is movably fitted onto the inside of the third rotating disk. A limiting sleeve is connected to the outside of the second movable column. A first gear is fixedly connected to the outer side of the first rotating disk. A second gear is fixedly connected to the outer side of the second rotating disk. A handle is fixedly connected to the outer side of the third rotating disk.

[0006] Preferably, four positioning posts are fixedly connected to the outer side of the inner side of the bushing. The positioning posts are movably sleeved inside the outer side of the bushing. The outer side of the threaded post is threaded, and the threaded post is bolted to the inner side of the outer side of the bushing.

[0007] Preferably, the baffle forms a 105° angle with the eccentric flange, the eccentric shaft head can rotate freely around the shaft, and the baffle can extend to the internal plunger of the diesel engine.

[0008] Preferably, bolts are installed inside the eccentric flange, and the back of the bolts passes through the eccentric flange and is installed on the outside of the diesel engine.

[0009] Preferably, the first limiting disk and the second limiting disk are sequentially and movably sleeved in the middle of the second rotating disk and the third rotating disk. The second rotating disk can rotate 360 ​​degrees around the outside of the first rotating disk, and the third rotating disk can rotate 360 ​​degrees around the outside of the second rotating disk.

[0010] Preferably, the inner side of the second rotating disk and the interior of the third rotating disk are provided with gear grooves, the two gear grooves are in opposite directions, and the first gear and the second gear are respectively movably sleeved inside the two gear grooves.

[0011] Preferably, the second movable column can rotate 360 ​​degrees inside the second rotating disk, and the outer side of each limiting sleeve is equipped with a circular limiting sleeve facing opposite directions. The outer side of the limiting sleeve can be movably sleeved on the outside of the first movable column or the third movable column.

[0012] Preferably, the handle and the third rotating disk form a 15-degree inclination angle, and the baffle is eccentric at the upper part of the shaft.

[0013] Compared with existing devices for stopping the unit injection pump of high-power medium-speed diesel engines, the present invention has the following advantages:

[0014] 1. This device for stopping the unit injection pump of a high-power medium-speed diesel engine has gear grooves on the inner side of the second rotating disk and inside the third rotating disk, with the gear grooves facing opposite directions. When the position between the first and second rotating disks is limited, the third rotating disk can be driven to rotate counterclockwise around the second rotating disk, while simultaneously rotating clockwise. By repeatedly rotating the third rotating disk, the entire bushing can be rotated to control the rotation of the pump body. At the same time, during rotation, the handle can be kept in the same position to avoid the problem of the outside of the pump body obstructing the handle due to excessive rotation. Meanwhile, when the second rotating disk is rotated, the entire bushing can be rotated in the opposite direction, thereby driving the pump body to start.

[0015] 2. This device for stopping the unit injection pump of a high-power medium-speed diesel engine works by movably connecting the device shaft inside the bushing, and simultaneously driving the positioning pin to move inside the shaft. This confines the shaft inside the bushing, preventing the shaft from rotating around the bushing. At the same time, rotating the threaded pin pushes the internal extension and retraction adjustment of the axial bushing, thereby adjusting the distance between the shaft and the bushing. This facilitates adjustment based on the depth of the reset piston, thus increasing the ability to connect and confine reset pistons of different depths.

[0016] 3. This device for stopping the unit injection pump of a high-power medium-speed diesel engine works by movably connecting the shaft inside the diesel engine plunger and turning the handle to rotate the shaft, which in turn moves the baffle to the highest position and the plunger to the highest position, thus stopping the pump. This increases the flexibility of stopping the unit injection pump during use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the main structure of the present invention;

[0019] Figure 3 This is an enlarged schematic diagram of section A of the structure of the present invention;

[0020] Figure 4 This is an enlarged schematic diagram of section B of the structure of the present invention.

[0021] In the diagram: 1. Bushing; 2. Eccentric flange; 3. Locating pin; 4. Shaft; 5. Eccentric shaft head; 6. Baffle; 7. Threaded pin; 8. First rotating disk; 9. First limiting disk; 10. Second rotating disk; 11. Second limiting disk; 12. Third rotating disk; 13. First movable pin; 14. Second movable pin; 15. Third movable pin; 16. Limiting sleeve; 17. Gear 1; 18. Gear 2; 19. Handle. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4A device for stopping a unit injection pump of a high-power medium-speed diesel engine includes a bushing 1. An eccentric flange 2 is fixedly connected to the outer side of the front end of the bushing 1. By installing a positioning bolt inside the outer side of the eccentric flange 2, the position between the eccentric flange 2 and the medium-speed diesel engine can be limited after the pump is stopped. A positioning pin 3 is fixedly connected to the outer side of the inner side of the bushing 1. The positioning pin 3 is movably sleeved inside the shaft 4, which can limit the position of the shaft 4 and prevent the angle between the bushing 1 and the shaft 4 from shifting when the handle 19 is turned. The shaft 4 is movably sleeved inside the bushing 1, which can extend into the interior of the pump stopping device inside the medium-speed diesel engine. An eccentric shaft head 5 is fixedly connected to the middle of the end of the shaft 4. The spindle head 5 is installed on the outside of the baffle 6 to ensure that the baffle 6 will not fall into the oil return groove of the return piston of the fuel injection pump plunger mechanism. The baffle 6 is installed on the upper part of the eccentric spindle head 5. The baffle 6 is movably sleeved inside the return piston of the fuel injection pump plunger mechanism and moves through the position of the baffle 6, which can push the position of the return piston to adjust, thereby driving the pump to stop. The outer side of the shaft 4 is threaded with a threaded post 7. Rotating the threaded post 7 causes the threaded post 7 to move with the shaft sleeve 1, which can push the length of the shaft 4 to adjust, so as to facilitate the splicing between the shaft 4 and the return piston. The outer side of the shaft sleeve 1 is fixedly connected to a first rotating disk 8. The middle of the outer side of the first rotating disk 8 is fixedly connected to a first limiting disk 9. The first limiting disk 9 drives the first rotating disk 8 to move through the shaft sleeve 1 to adjust the length of the shaft 4. The position between the rotating disk 8 and the second rotating disk 10 is defined. The second rotating disk 10 is movably sleeved on the outside of the first defining disk 9. The second defining disk 11 is fixedly connected to the middle of the outside of the second rotating disk 10. The second defining disk 11 drives the second rotating disk 10 to rotate at a defined angle with the third rotating disk 12. The third rotating disk 12 is movably sleeved on the outside of the second defining disk 11. The first movable column 13 is movably sleeved inside the first rotating disk 8. The second movable column 14 is movably sleeved inside the second rotating disk 10. The third movable column 15 is movably sleeved inside the third rotating disk 12. The limiting sleeve 16 is connected to the outside of the second movable column 14. Rotating the limiting sleeve 16 causes the end of the limiting sleeve 16 to be movably sleeved on the third rotating disk 12 in sequence. The position between the first rotating disk 8 and the second rotating disk 10, or between the second rotating disk 10 and the third rotating disk 12, can be limited by the inner part of the movable column 13 or the third movable column 15. A first gear 17 is fixedly connected to the outer side of the first rotating disk 8. By movably engaging the outer side of the first gear 17 inside the second rotating disk 10, the second rotating disk 10 can be driven to rotate counterclockwise around the first rotating disk 8, while preventing clockwise rotation between the second rotating disk 10 and the first rotating disk 8. A second gear 18 is fixedly connected to the outer side of the second rotating disk 10. By engaging the outer side of the second gear 18 inside the third rotating disk 12, the third rotating disk 12 can be driven to rotate clockwise around the outer side of the second rotating disk 10.To prevent the third rotating disk 12 from rotating counterclockwise around the outer side of the second rotating disk 10, a handle 19 is fixedly connected to the outer side of the third rotating disk 12.

[0024] refer to Figure 2 Four positioning pins 3 are fixedly connected to the outer side of the inner sleeve 1. The positioning pins 3 are movably sleeved inside the outer side of the shaft 4. The outer side of the threaded pin 7 is threaded. The threaded pin 7 is bolted to the inner side of the outer side of the sleeve 1. By movably sleeved the device shaft 4 inside the sleeve 1, and at the same time driving the positioning pins 3 to move inside the shaft 4, the shaft 4 can be limited inside the sleeve 1, preventing the shaft 4 from rotating around the sleeve 1. At the same time, rotating the threaded pin 7 can push the shaft 4 to extend and retract inside the sleeve 1, thereby adjusting the distance between the shaft 4 and the sleeve 1. This facilitates adjustment according to the depth of the reset piston, thereby increasing the ability to splice and limit reset pistons of different depths.

[0025] refer to Figure 1 The baffle 6 and the eccentric flange 2 form a 105° angle. The eccentric shaft head 5 can rotate freely around the shaft 4. The baffle 6 can extend to the internal plunger of the diesel engine. By forming a 105° angle between the baffle 6 and the eccentric flange 2, it is convenient to drive the baffle 6 to stop the pump and then drive the eccentric flange 2 to be spliced ​​and limited to the outside of the diesel engine. At the same time, the baffle 6 can extend to the internal plunger of the diesel engine, thus facilitating the pump stop.

[0026] refer to Figure 1 Bolts are installed inside the eccentric flange 2. The back of the bolts passes through the eccentric flange 2 and is installed on the outside of the diesel engine. By installing the bolts inside the eccentric flange 2 and driving the bolts to pass through the eccentric flange 2 and contact the outside of the diesel engine, the device can be driven to position the pump stop device.

[0027] refer to Figure 3 The first limiting disc 9 and the second limiting disc 11 are sequentially and movably fitted into the middle of the second rotating disc 10 and the third rotating disc 12. The second rotating disc 10 can rotate 360 ​​degrees around the outside of the first rotating disc 8, and the third rotating disc 12 can rotate 360 ​​degrees around the outside of the second rotating disc 10. By sequentially and movably fitting the first limiting disc 9 and the second limiting disc 11 into the middle of the middle of the second rotating disc 10 and the third rotating disc 12, the second rotating disc 10 can rotate 360 ​​degrees around the outside of the first rotating disc 8, and the third rotating disc 12 can rotate 360 ​​degrees around the outside of the second rotating disc 10, thus driving the second rotating disc 10 and the third rotating disc 12 to rotate sequentially. This facilitates rotation when adjusting the angle of the baffle 6.

[0028] refer to Figure 4Both the inner side of the second rotating disk 10 and the interior of the third rotating disk 12 are provided with gear grooves. The two gear grooves are in opposite directions. Gear 17 and gear 2 18 are respectively movably sleeved inside the two gear grooves. By providing gear grooves on the inner side of the second rotating disk 10 and the interior of the third rotating disk 12, and with the gear grooves in opposite directions, when the position between the first rotating disk 8 and the second rotating disk 10 is limited, the third rotating disk 12 can be driven to rotate counterclockwise around the second rotating disk 10. At the same time, the third rotating disk 12 is rotated clockwise. By repeatedly rotating the third rotating disk 12, the entire shaft sleeve 1 can be rotated to control the rotation of the pump body. At the same time, during rotation, the handle 19 can be kept in the same position and deflected to avoid the handle 19 being blocked by the outside of the pump body due to excessive rotation. When the second rotating disk 10 is rotated, the entire shaft sleeve 1 can be rotated in the opposite direction, thereby driving the pump body to start.

[0029] refer to Figure 4 The second movable column 14 can rotate 360 ​​degrees inside the second rotating disk 10. Circular limiting sleeves facing opposite directions are installed on the outer side of the limiting sleeve 16. The outer side of the limiting sleeve 16 can be movably fitted onto the outside of the first movable column 13 or the third movable column 15. By rotating the limiting sleeve 16, the limiting sleeve 16 can be movably fitted onto the outside of the first movable column 13 or the third movable column 15, thereby limiting the position between the first rotating disk 8 and the second rotating disk 10, or between the second rotating disk 10 and the third rotating disk 12. This increases flexibility when rotating and adjusting between the first rotating disk 8 and the second rotating disk 10, or between the second rotating disk 10 and the third rotating disk 12, thus enabling clamping and positioning between the corresponding connecting sleeves.

[0030] refer to Figure 1 The handle 19 and the third rotating disk 12 form a 15-degree angle. The baffle 6 is eccentric on the upper part of the shaft 4. By making the handle 19 and the third rotating disk 12 form a 15-degree angle, it is convenient to rotate the handle 19 and make it rotate with force. At the same time, the baffle 6 is eccentric on the outside of the shaft 4, so that when the shaft 4 rotates, the baffle 6 can move up or down, which can push the plunger periodically and thus drive the pump body to stop the pump.

[0031] Working principle: In use, insert shaft 4 into the lower part of the pump body plug. At the same time, depending on the plug position, rotate threaded column 7 to push shaft 4 to the front end, which can drive the position of baffle 6 for positioning adjustment. When clockwise rotation is required and there is an obstruction in the rotation position of handle 19, the limiting sleeve 16 can be rotated, which will drive the outer side of the limiting sleeve 16 to move and engage with the outside of the third movable column 15, and drive the position between the third rotating disk 12 and the second rotating disk 10 to be limited. At the same time, after rotating handle 19 clockwise by a certain angle, rotating handle 19 in the opposite direction can prevent the first rotating disk 8 from being stressed by the action of the gear. This will drive the device shaft 4 to rotate, and at the same time drive the baffle 6 to rise to the highest position, which can push the plug column to rise, thereby driving the device to stop the pump.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for stopping a unit fuel injection pump in a high-power medium-speed diesel engine, comprising a bushing (1), characterized in that: An eccentric flange (2) is fixedly connected to the outer side of the front end of the bushing (1). A positioning pin (3) is fixedly connected to the outer side of the inner side of the bushing (1). A shaft (4) is movably sleeved inside the bushing (1). An eccentric shaft head (5) is fixedly connected to the middle of the end of the shaft (4). A baffle (6) is installed on the upper part of the eccentric shaft head (5). A threaded post (7) is threadedly connected to the outer side of the shaft (4). A first rotating disk (8) is fixedly connected to the outer side of the bushing (1). A first limiting disk (9) is fixedly connected to the middle of the outer side of the first rotating disk (8). A second rotating disk (10) is movably sleeved on the outer side of the first limiting disk (9). The middle of the outer side of the second rotating disk (10) is fixedly... A second limiting disc (11) is connected, and a third rotating disc (12) is movably sleeved on the outside of the second limiting disc (11). A first movable column (13) is movably sleeved inside the first rotating disc (8). A second movable column (14) is movably sleeved inside the second rotating disc (10). A third movable column (15) is movably sleeved inside the third rotating disc (12). A limiting sleeve (16) is connected to the outside of the second movable column (14). A first gear (17) is fixedly connected to the outside of the first rotating disc (8). A second gear (18) is fixedly connected to the outside of the second rotating disc (10). A handle (19) is fixedly connected to the outside of the third rotating disc (12).

2. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: Four positioning pins (3) are fixedly connected to the outer side of the inner side of the bushing (1). The positioning pins (3) are movably sleeved inside the outer side of the shaft (4). The outer side of the threaded pin (7) is threaded. The threaded pin (7) is bolted to the inner side of the outer side of the bushing (1).

3. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: The baffle (6) forms a 105° angle with the eccentric flange (2), the eccentric shaft head (5) can rotate freely around the shaft (4), and the baffle (6) can extend to the internal plunger of the diesel engine.

4. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: Bolts are installed inside the eccentric flange (2), with the back of the bolts passing through the eccentric flange (2) and installed on the outside of the diesel engine.

5. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: The first limiting disk (9) and the second limiting disk (11) are sequentially and movably fitted into the middle of the second rotating disk (10) and the third rotating disk (12). The second rotating disk (10) can rotate 360 ​​degrees around the outside of the first rotating disk (8), and the third rotating disk (12) can rotate 360 ​​degrees around the outside of the second rotating disk (10).

6. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: The inner side of the second rotating disk (10) and the interior of the third rotating disk (12) are provided with gear slots. The two gear slots are in opposite directions, and the first gear (17) and the second gear (18) are respectively movably sleeved inside the two gear slots.

7. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: The second movable column (14) can rotate 360 ​​degrees inside the second rotating disk (10). The outer side of the limiting sleeve (16) is equipped with circular limiting sleeves in opposite directions. The outer side of the limiting sleeve (16) can be movably sleeved on the outside of the first movable column (13) or the third movable column (15).

8. The device for stopping the unit injection pump of a high-power medium-speed diesel engine according to claim 1, characterized in that: The handle (19) and the third rotating disk (12) form a 15-degree inclination angle, and the baffle (6) is eccentric on the upper part of the shaft (4).

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