Assembly device for fuel injection pump and use method of assembly device

Abstract

The invention relates to the field of assembly of fuel injection pumps, in particular to an assembly device for a fuel injection pump and a using method thereof.The assembly device for the fuel injection pump and the using method thereof comprise a supporting seat, and the fuel injection pump is placed at the top end of the supporting seat; the limiting seat is fixedly mounted at one end of the supporting seat and used for limiting and mounting the mounting seat, a main rod is fixedly mounted in the center of the top end of the mounting seat, a lifting rod is slidably connected to the top end of the main rod, and a screw rod is rotatably connected to the interior of the lifting rod in a threaded mode. By means of the lever principle, installation can be completed by only two workers originally needing cooperation of multiple workers, safety is higher, 40CrNiMoA is adopted for thermal refining originally when a board is adopted for pressing the roller guide cylinder base and the fracture risk is high, the yield strength, tensile strength and other mechanical properties of materials are improved, and therefore safety performance is improved.

Description

Technical Field

[0001] The invention relates to the field of fuel injection pump assembly, and in particular to an assembly device for a fuel injection pump and a use method thereof. Background Art

[0002] Liquid fuel cannot be burned directly. It can only burn after it is vaporized and mixed with air to form combustible gas. The plunger injection pump relies on the rotation of the fuel cam to push the injection pump plunger and the injection pump roller guide cylinder assembly to pump out high-pressure fuel, which enters the cylinder body through the high-pressure oil pipe and the nozzle. The nozzle converts liquid oil into fine mist particles and spreads them in the combustion chamber to facilitate the heating, evaporation and diffusion of the fuel. The elastic force of the spring is then used to return the roller guide cylinder assembly and the injection pump plunger to their original positions. Therefore, the injection pump will affect the atomization quality and injection amount of the fuel, which will affect the operation of the diesel engine. Because the spring of this type of oil pump requires a large force to compress it, tooling is required to facilitate the installation of parts.

[0003] Therefore, it is necessary to provide a new assembly device for a fuel injection pump and a method of using the same to solve the above-mentioned technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an assembly device for a fuel injection pump and a method for using the same.

[0005] The assembly device for a fuel injection pump provided by the present invention comprises:

[0006] A support seat, with a fuel injection pump placed on the top of the support seat;

[0007] A limiting seat, which is fixedly installed at one end of the supporting seat and is used to limit the installation of the mounting seat. A main rod is fixedly installed at the center of the top of the mounting seat. The top of the main rod is slidably connected to a lifting rod. The internal thread of the lifting rod is rotatably connected to a screw rod, and one end of the screw rod passes through the lifting rod and is connected to the internal thread of the main rod. The top of the lifting rod is rotatably connected to a pressure rod, and one end of the pressure rod is rotatably connected to a pressure block. An auxiliary spring is installed at one end of the top of the mounting seat, and the other end of the auxiliary spring is fixedly connected to one end of the pressure rod through the mounting rod.

[0008] Preferably, the two clamps are symmetrically rotatably connected to the two sides of the support seat, and are used to clamp and limit the fuel injection pump. The inner bottom end of the support seat is rotatably connected to a worm, a worm wheel is provided below the worm, and the worm and the worm wheel are meshingly connected. A cross bar is fixedly installed in the center of the worm wheel, and a bevel gear group is fixedly installed at both ends of the cross bar, and one end of the bevel gear group is fixedly connected to the clamp.

[0009] Preferably, a top end of the support seat is provided with an avoidance groove for cooperating with the fuel injection pump.

[0010] Preferably, one end of the worm passes through the side wall of the support seat and is fixedly mounted with a hand wheel.

[0011] Preferably, the connecting ends of the supporting seat and the limiting seat are fixedly connected by a reinforcing ear plate.

[0012] Preferably, a rotating seat is fixedly mounted on the top end of the screw rod.

[0013] Preferably, a hand-held rod is fixedly mounted on one end of the pressure rod away from the mounting rod.

[0014] The present invention also provides a method for using an assembly device for a fuel injection pump, comprising:

[0015] 1) Equipment preparation and placement. The staff will place the fuel injection pump to be assembled on the top of the support seat. The design of the avoidance groove on the top of the support seat can increase the placement stability of the fuel injection pump. At this time, the staff will turn the hand wheel to drive the worm and worm gear to rotate the bevel gear sets at both ends of the crossbar, so that the two clamping plates will rotate toward the fuel injection pump. The fuel injection pump will be clamped and restricted by the two clamping plates to increase the placement stability and accuracy of the fuel injection pump.

[0016] 2) Assembly of the equipment. After the staff has placed the fuel injection pump accurately and stably on the support seat, the staff begins to use the handheld rod to drive the pressure rod to perform fan-shaped movements around the top of the lifting rod, driving the pressure rod to press down, and compressing the spring on the fuel injection pump through the pressure block set on the pressure rod, thereby better facilitating subsequent assembly work. The setting of the auxiliary spring can keep one end of the pressure rod in an upward state when idle, which is convenient for the subsequent placement of the fuel injection pump and the use of the staff.

[0017] Compared with the related art, the assembly device for the fuel injection pump and the use method thereof provided by the present invention have the following beneficial effects:

[0018] The staff placed the fuel injection pump to be assembled on the top of the support seat. The design of the avoidance groove on the top of the support seat can increase the placement stability of the fuel injection pump. At this time, the staff turned the hand wheel to realize the rotation of the bevel gear sets at both ends of the cross bar through the transmission of the worm and the worm wheel, so that the two clamping plates rotated toward the fuel injection pump, and the fuel injection pump was clamped and restricted by the two clamping plates to increase the placement stability and accuracy of the fuel injection pump. Afterwards, the staff began to use the handheld rod to drive the pressure rod to perform a fan-shaped movement around the top of the lifting rod, driving the pressure rod to press down, and pressing the spring on the fuel injection pump through the pressure block set on the pressure rod. The spring is compressed to facilitate the subsequent assembly work, and the setting of the auxiliary spring can keep one end of the pressure rod in an upward state when idle, which is convenient for the subsequent placement of the fuel injection pump and the use of the staff. The assembly device for the fuel injection pump is simpler and more efficient to operate. The use of the lever principle means that the installation that originally required the cooperation of multiple workers now only requires two workers to complete, and the safety is higher. The original wooden board was used to press the roller guide cylinder seat, which had a high risk of breakage. Now 40CrNiMoA is used for tempering treatment. The yield strength, tensile strength and other mechanical properties of the material are improved, thereby improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of an assembly device for a fuel injection pump and a method of using the same provided by the present invention;

[0020] Figure 2 for Figure 1 The local structural schematic diagram shown;

[0021] Figure 3 for Figure 1 The structural diagram of the local explosion shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the structure of the pressure rod shown.

[0023] Numbers in the figure: 1. Support seat; 2. Fuel injection pump; 3. Clamp; 4. Worm; 5. Worm wheel; 6. Cross bar; 7. Bevel gear set; 8. Hand wheel; 9. Limit seat; 10. Mounting seat; 11. Main rod; 12. Lifting rod; 13. Screw rod; 14. Rotating seat; 15. Pressure rod; 16. Pressure block; 17. Hand-held rod; 18. Auxiliary spring; 19. Mounting rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0026] See also Figures 1 to 4 , an embodiment of the present invention provides an assembly device for a fuel injection pump and a method for using the same, the assembly device for a fuel injection pump and the method for using the same include:

[0027] A support base 1, a fuel injection pump 2 is placed on the top of the support base 1;

[0028] A limiting seat 9 is fixedly mounted on one end of the supporting seat 1 and is used for limiting the installation of the mounting seat 10. A main rod 11 is fixedly mounted at the center of the top end of the mounting seat 10. A lifting rod 12 is slidably connected to the top end of the main rod 11. A screw rod 13 is rotatably connected to the internal thread of the lifting rod 12, and one end of the screw rod 13 passes through the lifting rod 12 and is connected to the internal thread of the main rod 11. A pressure rod 15 is rotatably connected to the top end of the lifting rod 12, and a pressure block 16 is rotatably connected to one end of the pressure rod 15. An auxiliary spring 18 is installed at one end of the top of the mounting seat 10, and the other end of the auxiliary spring 18 is fixedly connected to one end of the pressure rod 15 through a mounting rod 19.

[0029] It should be noted that: the staff places the fuel injection pump 2 to be assembled on the top of the support seat 1. Since the design of the avoidance groove at the top of the support seat 1 can increase the placement stability of the fuel injection pump 2, at this time, the staff turns the hand wheel 8, and through the transmission of the worm 4 and the worm wheel 5, the bevel gear set 7 at both ends of the cross bar 6 is rotated, so that the two clamps 3 rotate toward the fuel injection pump 2, and the fuel injection pump 2 is clamped and restricted by the two clamps 3, thereby increasing the placement stability and accuracy of the fuel injection pump 2. Afterwards, the staff begins to drive the pressure rod 15 to perform a fan-shaped movement around the top of the lifting rod 12 through the hand-held rod 17, driving the pressure rod 15 to press down, and compressing the spring on the fuel injection pump 2 through the pressure block 16 set on the pressure rod 15, thereby better facilitating the subsequent assembly work, and the setting of the auxiliary spring 18 can keep one end of the pressure rod 15 in an upward state when idle, which is convenient for the subsequent placement of the fuel injection pump 2 and the use of the staff.

[0030] In the embodiments of the present invention, please refer to Figures 1 to 4 , a clamping plate 3, two clamping plates 3 are symmetrically rotatably connected to the two sides of the support seat 1, and are used to clamp and limit the fuel injection pump 2. A worm 4 is rotatably connected to the inner bottom end of the support seat 1, and a worm wheel 5 is provided below the worm 4, and the worm 4 and the worm wheel 5 are meshingly connected. A cross bar 6 is fixedly installed in the center of the worm wheel 5, and a bevel gear set 7 is fixedly installed at both ends of the cross bar 6, and one end of the bevel gear set 7 is fixedly connected to the clamping plate 3;

[0031] It should be noted that: the staff rotates the hand wheel 8, and through the transmission of the worm 4 and the worm wheel 5, the bevel gear set 7 at both ends of the cross bar 6 is rotated, so that the two clamping plates 3 are rotated toward the fuel injection pump 2, and the fuel injection pump 2 is clamped and restricted by the two clamping plates 3, thereby increasing the placement stability and accuracy of the fuel injection pump 2;

[0032] In the embodiments of the present invention, please refer to Figures 1 to 4 The top of the support seat 1 is provided with an avoidance groove for matching with the fuel injection pump 2;

[0033] It should be noted that the avoidance groove at the top of the support seat 1 can increase the placement stability of the fuel injection pump 2;

[0034] In the embodiments of the present invention, please refer to Figures 1 to 4 One end of the worm 4 passes through the side wall of the support seat 1 and is fixedly mounted with a hand wheel 8;

[0035] It should be noted that the setting of the hand wheel 8 can facilitate the staff to rotate the worm 4, so that the clamping plate 3 can rotate in the same direction or in the opposite direction;

[0036] In the embodiments of the present invention, please refer to Figures 1 to 4 , the connecting ends of the support seat 1 and the limiting seat 9 are fixedly connected by reinforcing ear plates;

[0037] It should be noted that the provision of the reinforcement ear plate can increase the connection stability between the support seat 1 and the limiting seat 9;

[0038] In the embodiments of the present invention, please refer to Figures 1 to 4 , a rotating seat 14 is fixedly mounted on the top of the screw rod 13;

[0039] It should be noted that the setting of the rotating seat 14 can rotate the screw rod 13. With the rotation of the screw rod 13, the total length of the main rod 11 and the lifting rod 12 can be reduced.

[0040] In the embodiments of the present invention, please refer to Figures 1 to 4 A hand-held rod 17 is fixedly mounted on one end of the pressure rod 15 away from the mounting rod 19;

[0041] It should be noted that the setting of the hand-held rod 17 can rotate the pressure rod 15;

[0042] The present invention also provides a method for using an assembly device for a fuel injection pump, comprising:

[0043] 1) Preparation and placement of the equipment. The staff will place the fuel injection pump 2 to be assembled on the top of the support seat 1. The design of the avoidance groove on the top of the support seat 1 can increase the placement stability of the fuel injection pump 2. At this time, the staff will rotate the hand wheel 8, and through the transmission of the worm 4 and the worm wheel 5, the bevel gear set 7 at both ends of the cross bar 6 will rotate, so that the two clamping plates 3 will rotate toward the fuel injection pump 2, and the fuel injection pump 2 will be clamped and restricted by the two clamping plates 3, so as to increase the placement stability and accuracy of the fuel injection pump 2;

[0044] 2) Assembly of the equipment. After the staff has placed the fuel injection pump 2 accurately and stably on the support seat 1, the staff begins to use the hand-held rod 17 to drive the pressure rod 15 to perform a fan-shaped movement around the top of the lifting rod 12, driving the pressure rod 15 to press down, and compressing the spring on the fuel injection pump 2 through the pressure block 16 set on the pressure rod 15, so as to better facilitate the subsequent assembly work. The setting of the auxiliary spring 18 can keep one end of the pressure rod 15 in an upward state when idle, which is convenient for the subsequent placement of the fuel injection pump 2 and the use of the staff.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An assembly device for a fuel injection pump and a method of using the same, characterized in that: include: A support base (1), a fuel injection pump (2) is placed on the top of the support base (1); A limiting seat (9) is fixedly mounted on one end of the supporting seat (1) and is used for limiting the installation of the mounting seat (10). A main rod (11) is fixedly mounted at the center of the top end of the mounting seat (10). A lifting rod (12) is slidably connected to the top end of the main rod (11). The internal thread of the lifting rod (12) is rotatably connected to a screw rod (13), and one end of the screw rod (13) passes through the lifting rod (12) and is connected to the internal thread of the main rod (11). A pressure rod (15) is rotatably connected to the top end of the lifting rod (12). One end of the pressure rod (15) is rotatably connected to a pressure block (16). An auxiliary spring (18) is mounted on one end of the top of the mounting seat (10). The other end of the auxiliary spring (18) is fixedly connected to one end of the pressure rod (15) through a mounting rod (19).

2. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: The clamping plates (3) are symmetrically rotatably connected to the two sides of the support seat (1) for clamping and limiting the fuel injection pump (2). The inner bottom end of the support seat (1) is rotatably connected to a worm (4). A worm wheel (5) is provided below the worm (4). The worm (4) and the worm wheel (5) are meshingly connected. A cross bar (6) is fixedly installed at the center of the worm wheel (5). A bevel gear set (7) is fixedly installed at both ends of the cross bar (6). One end of the bevel gear set (7) is fixedly connected to the clamping plates (3).

3. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: The top end of the support seat (1) is provided with an avoidance groove for being placed and matched with the fuel injection pump (2).

4. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: One end of the worm (4) passes through the side wall of the support seat (1) and is fixedly mounted with a hand wheel (8).

5. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: The connecting ends of the support seat (1) and the limiting seat (9) are fixedly connected via a reinforcing ear plate.

6. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: A rotating seat (14) is fixedly mounted on the top end of the screw rod (13).

7. The assembly device for a fuel injection pump and the method of using the same according to claim 1, characterized in that: A hand-held rod (17) is fixedly mounted on one end of the pressure rod (15) away from the mounting rod (19).

8. The method for using the assembly device for a fuel injection pump according to any one of claims 1 to 7, characterized in that: include: 1) Preparation and placement of the equipment. The staff places the fuel injection pump (2) to be assembled on the top of the support seat (1). The design of the avoidance groove at the top of the support seat (1) can increase the placement stability of the fuel injection pump (2). At this time, the staff rotates the hand wheel (8) and drives the worm (4) and the worm wheel (5) to realize the rotation of the bevel gear set (7) at both ends of the cross bar (6), so that the two clamping plates (3) rotate toward the fuel injection pump (2). The fuel injection pump (2) is clamped and restricted by the two clamping plates (3), thereby increasing the placement stability and accuracy of the fuel injection pump (2); 2) Assembly of the equipment. After the staff has accurately and stably placed the fuel injection pump (2) on the support seat (1), the staff begins to use the hand-held rod (17) to drive the pressure rod (15) to perform a fan-shaped movement around the top of the lifting rod (12), driving the pressure rod (15) to press down, and compressing the spring on the fuel injection pump (2) through the pressure block (16) arranged on the pressure rod (15), thereby better facilitating the subsequent assembly work. The setting of the auxiliary spring (18) can keep one end of the pressure rod (15) in an upward state when idle, which is convenient for the subsequent placement of the fuel injection pump (2) and the use of the staff.

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