Hydraulic speed regulation single-cylinder fuel injection pump for single-cylinder diesel engine

Abstract

The utility model discloses a hydraulic speed regulation single-cylinder fuel injection pump for a single-cylinder diesel engine, and relates to the technical field of single-cylinder fuel injection pumps. The utility model relates to a single-cylinder fuel injection pump, in particular to a single-cylinder fuel injection pump, which solves the problems that the existing single-cylinder fuel injection pump adopts a rotary adjustment mode or a mode of increasing and decreasing cushion blocks at the installation position to adjust the fuel inlet quantity, the adjustment operation is inconvenient, and the adjustment precision needs to be improved. A sliding hole is formed in the outer surface of the mounting plate, a movable pipe seat is slidably connected to the interior of the sliding hole, the movable pipe seat penetrates through the middle axis position in the adjusting seat, a piston block is integrally connected to the outer surface of the movable pipe seat and located in the adjusting seat, and an end cover is in threaded connection with an upper end opening of the adjusting seat; and an oil guide pipe is integrally connected to the edge position of the upper surface of the end cover. The effects of convenient adjustment and high adjustment precision are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to single cylinder fuel injection pump technical field, concretely is a kind of hydraulic governing single cylinder fuel injection pump for single cylinder diesel engine. BACKGROUND

[0002] Single cylinder fuel injection pump refers to only one pair of plunger couple and one oil outlet, oil injection pump is supplied with oil to the oil injection pump of one cylinder, usually fixed with flange on engine body, and the cam of the plunger driven by it is coaxial with engine intake and exhaust cam, is one of important parts for the stable operation of single cylinder engine.

[0003] The existing single cylinder fuel injection pump adopts the mode of rotary adjustment or increasing or decreasing pad at installation position to adjust oil intake, and the operation of adjustment is inconvenient, and the precision of adjustment needs to be improved. INVENTION CONTENTS

[0004] The utility model discloses a kind of hydraulic governing single cylinder fuel injection pump for single cylinder diesel engine, to solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of hydraulic governing single cylinder fuel injection pump for single cylinder diesel engine, including mounting plate, the upper surface of the mounting plate is integrally connected with adjusting seat, the outer surface of the mounting plate is provided with sliding hole, and the inside of sliding hole is slidably connected with movable pipe seat, the movable pipe seat is penetrated in the inside central axis position of adjusting seat, the outer surface of the movable pipe seat is integrally connected with piston block, the piston block is located in the inside of adjusting seat, the upper end of the adjusting seat is threadedly connected with end cover, the edge position of the upper surface of the end cover is integrally connected with oil guide pipe, the central axis position of the end cover is provided with sliding hole, one end of the movable pipe seat is penetrated in the sliding hole of the end cover.

[0006] Preferably, the inside of the movable pipe seat is penetrated with piston rod, one end of the piston rod is fixedly connected with second end block, universal ball is fixedly installed on the end face of the second end block.

[0007] Preferably, one end of the movable pipe seat is threadedly connected with first end block, the piston rod is penetrated in the central axis position of first end block, first spring is sleeved on the outside of the piston rod, and the two ends of the first spring are respectively abutted on the inside end face of first end block and second end block.

[0008] Preferably, one end of the movable pipe seat is threadedly connected with mounting seat, piston sleeve pipe is installed in the central axis position of the mounting seat, and one end of the piston rod is inserted in the central axis position of the piston sleeve pipe.

[0009] Preferably, oil inlet pipe is integrally connected on the side surface of the mounting seat, communication hole is provided on the side surface of the piston sleeve pipe, and one end of the oil inlet pipe corresponds to the position of communication hole.

[0010] Preferably, one end of the mounting seat is threadedly connected with an oil outlet pipe, one end of the oil outlet pipe abuts against the end face of the piston sleeve, the inside of the oil outlet pipe is provided with a second spring, one end of the second spring is sleeved with a movable plug, and one end of the movable plug abuts against the port of the piston sleeve.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1、 the utility model discloses can install the mounting plate directly at the specified position of single cylinder machine, can draw or inject hydraulic oil to the inside of adjusting seat in the subsequent use process to drive piston block to carry out position removal in the inside of adjusting seat, and then drive movable pipe seat to carry out axial position removal, thereby can adjust the distance of the oil pump one end and cam, can adjust the oil intake effectively, and the whole adjusting operation is flexible and convenient, and utilizes hydraulic pressure adjustment to improve the adjustment accuracy simultaneously;

[0013] 2、 the utility model discloses through the integral connection of second end block at one end of piston rod, installs universal ball on the end face of second end block, can utilize universal ball to contact with cam, thereby can effectively reduce the wear and tear of oil pump and cam, and then can effectively improve the service life of the oil pump, and the overall practicality has been improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the first perspective view of the utility model's three-dimensional structure;

[0015] Fig. 2 It is the second perspective view of the utility model's three-dimensional structure;

[0016] Fig. 3 It is the internal structure diagram of the utility model.

[0017] In the drawing: 1, mounting plate;2, adjusting seat;3, movable pipe seat;4, end cover;5, oil guide pipe;6, mounting seat;7, oil inlet pipe;8, oil outlet pipe;9, first end block;10, piston rod;11, first spring;12, second end block;13, universal ball;14, piston block;15, piston sleeve;16, movable plug;17, second spring. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] Please refer to Figs. 1-3The utility model provides a kind of hydraulic speed regulation single cylinder injection pump for single cylinder diesel engine, including mounting plate 1, the upper surface of mounting plate 1 is integrally connected with adjusting seat 2, the outer surface of mounting plate 1 is provided with sliding hole, and the inside of sliding hole is slidably connected with movable pipe seat 3, movable pipe seat 3 penetrates the inside central axis position of adjusting seat 2, the outer surface of movable pipe seat 3 is integrally connected with piston block 14, piston block 14 is located in the inside of adjusting seat 2, the upper end of adjusting seat 2 is threadedly connected with end cover 4, the edge position of the upper surface of end cover 4 is integrally connected with oil guide pipe 5, the central axis position of end cover 4 is provided with sliding hole, one end of movable pipe seat 3 penetrates in the sliding hole of end cover 4, wherein mounting plate 1 can be directly installed at the specified position of single cylinder machine, in subsequent use process, piston block 14 can be driven to move in the inside of adjusting seat 2 by extracting or injecting hydraulic oil into adjusting seat 2 through oil guide pipe 5, to move the axial position of movable pipe seat 3 in turn, so that the distance of the oil pump one end and cam can be adjusted, oil intake can be effectively adjusted, whole adjustment operation is flexible and convenient, and the adjustment precision can be improved using hydraulic adjustment.

[0020] Further, piston rod 10 penetrates the inside of movable pipe seat 3, one end of piston rod 10 is fixedly connected with second end block 12, universal ball 13 is fixedly installed on the end face of second end block 12, one end of movable pipe seat 3 is threadedly connected with first end block 9, piston rod 10 penetrates the central axis position of first end block 9, first spring 11 is sleeved on the outside of piston rod 10, the inside end face of first end block 9 and second end block 12 is respectively abutted on the two ends of first spring 11, wherein by integrally connecting second end block 12 on one end of piston rod 10, installing universal ball 13 on the end face of second end block 12, universal ball 13 can be used to contact with cam, so that the wear of oil pump and cam can be effectively reduced, the service life of the oil pump can be effectively improved, and the overall practicability is improved.

[0021] Further, one end of the movable tube base 3 is threadedly connected with a mounting base 6, a piston sleeve 15 is mounted at the central axis position of the mounting base 6, one end of the piston rod 10 is inserted at the central axis position of the piston sleeve 15, an oil inlet pipe 7 is integrally connected on the side surface of the mounting base 6, a communicating hole is arranged on the side surface of the piston sleeve 15, one end of the oil inlet pipe 7 corresponds to the position of the communicating hole, an oil outlet pipe 8 is threadedly connected at one end of the mounting base 6, one end of the oil outlet pipe 8 abuts against the end surface of the piston sleeve 15, a second spring 17 is arranged inside the oil outlet pipe 8, a movable plug 16 is sleeved and mounted at one end of the second spring 17, one end of the movable plug 16 abuts against the port of the piston sleeve 15, when the oil pump works, the piston rod 10 reciprocates inside the piston sleeve 15, when the piston rod 10 is at the lowermost end, fuel flows into the inside of the piston sleeve 15 from the oil inlet pipe 7, with the lifting of the piston rod 10, the piston rod 10 extrudes the fuel inside the piston sleeve 15, at this time, part of the fuel flows back into the inside of the oil inlet pipe 7, with the continuous movement of the piston rod 10, when the rod body of the piston rod 10 blocks the communicating hole on the outer surface of the piston sleeve 15, one end of the piston rod 10 pressurizes the fuel remaining inside the piston sleeve 15, when the fuel pressure exceeds the deformation degree of the second spring 17, the movable plug 16 separates from one end of the piston sleeve 15, the fuel inside the piston sleeve 15 enters the inside of the oil outlet pipe 8 and is discharged, this process can effectively transport the fuel.

[0022] Working principle: in use, first install the single cylinder fuel injection pump at the designated position, then connect the oil supply pipeline, oil delivery pipeline, hydraulic oil pipeline, after installation, it can be used normally, at this time the external cam drives one end of the piston rod 10 to move, under the action of the first spring 11, one end of the piston rod 10 can stably contact with the cam surface, since the second end block 12 is integrally connected at one end of the piston rod 10, the universal ball 13 is installed on the end face of the second end block 12, the universal ball 13 can be used to contact with the cam, thereby effectively reducing the wear of the oil pump and the cam, when the oil pump works, the piston rod 10 reciprocates in the inside of the piston sleeve 15, when the piston rod 10 is at the lowermost end, the fuel flows into the inside of the piston sleeve 15 from the oil inlet pipe 7, with the lifting of the piston rod 10, the piston rod 10 extrudes the fuel in the inside of the piston sleeve 15, at this time part of the fuel flows back to the inside of the oil inlet pipe 7, with the continuous movement of the piston rod 10, when the rod body of the piston rod 10 blocks the communication hole on the outer surface of the piston sleeve 15, one end of the piston rod 10 pressurizes the fuel remaining in the inside of the piston sleeve 15, when the fuel pressure exceeds the deformation degree of the second spring 17, the movable block 16 separates from one end of the piston sleeve 15, the fuel in the inside of the piston sleeve 15 enters the inside of the oil outlet pipe 8 and is discharged, the fuel enters the combustion chamber, in the whole use process, the hydraulic oil can be drawn or injected into the inside of the adjusting seat 2 through the oil guide pipe 5 to drive the piston block 14 to move in position in the inside of the adjusting seat 2, thereby driving the movable pipe seat 3 to move in axial position, thereby being able to adjust the distance between one end of the oil pump and the cam, and effectively adjust the oil inlet amount.

[0023] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0024] The standard parts used in the present application file can be purchased from the market, the specific connection mode of each part is connected by using the conventional bolt, rivet, welding and other conventional means in the prior art, and the mechanical, parts and equipment adopt the conventional type in the prior art, plus the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0025] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine comprising a mounting plate (1), characterized in that: The upper surface of the mounting plate (1) is integrally connected with an adjusting seat (2), the outer surface of the mounting plate (1) is provided with a sliding hole, and the inside of the sliding hole is slidably connected with a movable pipe seat (3), the movable pipe seat (3) penetrates the inside of the adjusting seat (2) at the middle shaft position, the outer surface of the movable pipe seat (3) is integrally connected with a piston block (14), the piston block (14) is located in the inside of the adjusting seat (2), the upper end of the adjusting seat (2) is threadedly connected with an end cover (4), the edge position of the upper surface of the end cover (4) is integrally connected with an oil guide pipe (5), the middle shaft position of the end cover (4) is provided with a sliding hole, and one end of the movable pipe seat (3) penetrates into the sliding hole of the end cover (4).

2. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine according to claim 1, characterized in that: The inside of the movable pipe seat (3) penetrates a piston rod (10), one end of the piston rod (10) is fixedly connected with a second end block (12), and the end face of the second end block (12) is fixedly installed with a universal ball (13).

3. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine according to claim 2, characterized in that: One end of the movable pipe seat (3) is threadedly connected with a first end block (9), the piston rod (10) penetrates the middle shaft position of the first end block (9), the outside of the piston rod (10) is sleeved with a first spring (11), and the two ends of the first spring (11) are respectively abutted against the inside end faces of the first end block (9) and the second end block (12).

4. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine according to claim 1, characterized in that: One end of the movable pipe seat (3) is threadedly connected with a mounting seat (6), the middle shaft position of the mounting seat (6) is installed with a piston sleeve (15), and one end of the piston rod (10) is inserted into the middle shaft position of the piston sleeve (15).

5. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine according to claim 4, characterized in that: The side surface of the mounting seat (6) is integrally connected with an oil inlet pipe (7), the side surface of the piston sleeve (15) is provided with a communication hole, and one end of the oil inlet pipe (7) corresponds to the position of the communication hole.

6. A hydraulic timing single cylinder fuel injection pump for a single cylinder diesel engine according to claim 4, characterized in that: One end of the mounting seat (6) is threadedly connected with an oil outlet pipe (8), one end of the oil outlet pipe (8) is abutted against the end face of the piston sleeve (15), the inside of the oil outlet pipe (8) is provided with a second spring (17), one end of the second spring (17) is sleeved with a movable plug block (16), and one end of the movable plug block (16) is abutted against the port of the piston sleeve (15).

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