Convenient-to-adjust double-motor starting device for diesel engine unit

Abstract

The convenient-to-adjust double-motor starting device comprises a cross beam plate which is arranged on a public engine base and located on the right side of a flywheel at the output end of a diesel engine, two supports are installed on the cross beam plate in a position-adjustable mode, a pneumatic motor is installed on the supports in a height-adjustable mode, and a motor gear is fixed to the output end of the pneumatic motor. The motor gear is meshed with a flywheel at the output end of the diesel engine, and simultaneous starting and stopping of the two pneumatic motors are controlled through an electromagnetic valve arranged on a main air path. The pneumatic motors supported by the support in a height-adjustable mode are simultaneously arranged on the two sides of the output end of the diesel engine, the starting capacity and efficiency of the diesel engine are greatly improved, the starting time is shortened, and smooth and stable starting of the diesel engine is guaranteed. On the premise that the height of the pneumatic motor is adjustable, the support is fixed on the position-adjustable cross beam plate in a position-adjustable manner, so that the position of the pneumatic motor can be adjusted in three directions when the pneumatic motor is mounted and fastened, the assembly backlash is quickly ensured, the meshing consistency of a double-motor gear and a flywheel is ensured, and the backlash adjustment requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engines, and in particular relates to a conveniently adjustable dual-motor starting device for a diesel engine set. Background Art

[0002] The main way to start a marine diesel engine is to start it by dragging it with a starter motor, that is, to use a solenoid valve to control compressed air, input high-pressure air into the high-pressure air chamber of the starter motor, push the motor gear to pop out quickly, and mesh with the diesel engine crankshaft flywheel ring gear, drive the flywheel, crankshaft and other rotating parts to rotate at high speed, and as the moving parts rotate rapidly, the air pressure in each cylinder increases successively, and the diesel injected into the cylinder is compressed and ignited, and the diesel engine starts normally. The pneumatic motor starting method is currently the main method for starting large diesel engines, and can basically meet the starting requirements of various types of diesel engines.

[0003] At present, almost all of the actual use is single-sided pneumatic motor drag start. With the modification of the unit motor scheme, the shaft connection inertia increases, and the original single motor cannot be dragged and started normally. At the same time, the original motor assembly position is not conducive to the adjustment of the motor scale gear tooth gap, and cannot meet the unit's successful starting requirements. Therefore, it is necessary to make improvements to the above problems. Utility Model Content

[0004] The technical problem solved by the utility model is as follows: to provide a conveniently adjustable dual-motor starting device for a diesel engine unit, in which pneumatic motors supported by height-adjustable brackets are arranged on both sides of the output end of the diesel engine, which can greatly improve the starting ability and efficiency of the diesel engine, shorten the starting time, and ensure smooth and stable starting of the diesel engine; under the premise that the height of the pneumatic motor is adjustable, the bracket is adjustably fixed on a crossbeam plate with an adjustable position, so that the position of the pneumatic motor can be adjusted in three directions when it is installed and tightened, so as to quickly ensure the assembly tooth gap, ensure the consistency of the meshing of the dual motor gears with the flywheel, and ensure the tooth gap adjustment requirements.

[0005] The technical solution adopted by the utility model is: a portable dual-motor starting device for a diesel engine set, comprising a crossbeam plate arranged on a common engine base and located on the right side of a flywheel at the output end of the diesel engine, two brackets are adjustably mounted on the crossbeam plate, and a pneumatic motor is height-adjustably mounted on the bracket, a motor gear is fixed to the output end of the pneumatic motor, and the motor gear is meshed with the flywheel at the output end of the diesel engine, and the simultaneous start and stop of the two pneumatic motors is controlled by an electromagnetic valve arranged on the main air path.

[0006] Among them, the two end plates of the beam plate are symmetrically provided with strip holes arranged parallel to its width direction, and the bolts passing through the strip holes and the through holes on the common machine base and the locking nuts adapted to the bolts fix the position of the beam plate on the common machine base in an adjustably fixed manner.

[0007] Furthermore, a waist-shaped long hole parallel to the length direction of the beam plate is formed on the bottom surface of the bracket, and bolts passing through the waist-shaped long hole and the through holes on the beam plate and nuts adapted to the bolts are used to adjustably fix the bracket and the beam plate into one.

[0008] Furthermore, the bracket adopts an inverted T-shaped structure consisting of a bottom plate and a vertical plate fixed on the bottom plate, and the waist-shaped long hole is arranged on the bottom plate.

[0009] Furthermore, a vertical waist-shaped hole is formed on the vertical plate, and a bolt connected to the pneumatic motor passes through the waist-shaped hole and is adapted to be connected with a nut, thereby realizing height-adjustable installation of the pneumatic motor on the vertical plate.

[0010] The advantages of this utility model compared with the prior art:

[0011] 1. This technical solution arranges pneumatic motors supported by height-adjustable brackets on both sides of the diesel engine output end, which can greatly improve the diesel engine starting ability and efficiency, shorten the starting time, and ensure smooth and stable starting of the diesel engine;

[0012] 2. Under the premise that the height of the pneumatic motor is adjustable, the technical solution fixes the bracket position in an adjustable manner on the crossbeam plate, so that the position of the pneumatic motor can be adjusted in three directions when it is installed and tightened, quickly ensuring the assembly backlash, ensuring the consistency of the meshing between the dual motor gears and the flywheel, and the backlash adjustment requirements;

[0013] 3. This technical solution has a simple structure, reasonable design, simple layout, high reliability, convenient and quick adjustment of the pneumatic motor position, convenient inspection and maintenance, and high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the structure of the utility model;

[0015] Figure 2 It is a top view of the structure of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiment of the present utility model Figure 1-2 , 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 them. Based on the embodiments of 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.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0019] Used for diesel engine units with convenient dual motor starting devices, such as Figure 1-2 As shown, it includes a crossbeam plate 2 arranged on a common engine base 1 and located on the right side of a flywheel 6 at the output end of the diesel engine, two brackets 3 are adjustable in position on the crossbeam plate 2, and an air motor 4 is height-adjustably mounted on the bracket 3, a motor gear 5 is fixed at the output end of the air motor 4, and the motor gear 5 is meshed with the flywheel 6 at the output end of the diesel engine, and the simultaneous start and stop of the two air motors 4 is controlled by an electromagnetic valve arranged on the main air path; in the above structure, the air motors 4 supported by the height-adjustable brackets 3 are arranged on both sides of the output end of the diesel engine, which can greatly improve the starting ability and efficiency of the diesel engine, shorten the starting time, and ensure smooth and stable starting of the diesel engine; under the premise that the height of the air motor 4 is adjustable, the bracket 3 is adjustably fixed on the crossbeam plate 2 with an adjustable position, so that the position of the air motor 4 can be adjusted in three directions when it is installed and tightened, so as to quickly ensure the assembly tooth gap, ensure the consistency of the meshing of the dual motor gears with the flywheel 6, and ensure the tooth gap adjustment requirements;

[0020] The position-adjustable connection structure between the crossbeam plate 2 and the common machine base 1 is specifically as follows: the crossbeam plate 2 is symmetrically provided with strip holes 8 arranged parallel to its width direction on the plate surfaces at both ends, and the crossbeam plate 2 is adjustably fixed to the common machine base 1 by bolts passing through the strip holes 8 and the through holes on the common machine base 1 and locking nuts matched with the bolts.

[0021] The specific connection structure of the bracket 3 and the cross beam 2 with adjustable position is as follows: a waist-shaped long hole 7 arranged parallel to the length direction of the cross beam 2 is formed on the bottom surface of the bracket 3, and bolts passing through the waist-shaped long hole 7 and the through holes on the cross beam 2 and nuts adapted to the bolts are used to adjustably fix the bracket 3 and the cross beam 2 into one.

[0022] The specific structure of the bracket 3 is as follows: the bracket 3 adopts an inverted T-shaped structure consisting of a bottom plate 3-1 and a vertical plate 3-2 fixed on the bottom plate 3-1, and the waist-shaped long hole 7 is arranged on the bottom plate 3-1.

[0023] The height-adjustable installation structure of the pneumatic motor 4 on the vertical plate 3-2 is specifically as follows: a vertically arranged waist-shaped hole is formed on the vertical plate 3-2, and the bolts connected to the pneumatic motor 4 pass through the waist-shaped hole and are adapted to be connected with the nuts, thereby realizing the height-adjustable installation of the pneumatic motor 4 on the vertical plate 3-2.

[0024] This design scheme was applied to diesel engine units with the same or similar structure. The starting time of the unit was successfully shortened from the original 11s to 9s. At the same time, it has been started more than hundreds of times. The starting is fast and smooth, and no starting failure has occurred. The use effect is good, ensuring that the starting time meets the emergency starting requirements. The dual-motor design successfully ensures the diesel engine starting efficiency and success rate.

[0025] The technical solution has a simple structure, reasonable design, simple layout, high reliability, convenient and quick adjustment of the pneumatic motor position, convenient inspection and maintenance, and high use value.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A portable dual-motor starting device for a diesel engine unit, characterized in that: The invention comprises a cross beam plate (2) arranged on a common engine base (1) and located on the right side of a flywheel (6) at the output end of a diesel engine, two brackets (3) being mounted on the cross beam plate (2) in an adjustable manner, and a pneumatic motor (4) being mounted on the bracket (3) in an adjustable manner in height, a motor gear (5) being fixed at the output end of the pneumatic motor (4), and the motor gear (5) being meshed with the flywheel (6) at the output end of the diesel engine, and the simultaneous start and stop of the two pneumatic motors (4) being controlled by a solenoid valve arranged on a main air path.

2. The adjustable dual-motor starting device for a diesel engine set according to claim 1 is characterized in that: The cross beam plate (2) has strip holes (8) symmetrically formed on both end plate surfaces and arranged parallel to the width direction thereof, and bolts passing through the strip holes (8) and through holes on the common machine base (1) and locking nuts matched with the bolts are used to adjustably fix the cross beam plate (2) to the common machine base (1).

3. The adjustable dual-motor starting device for a diesel engine set according to claim 1, characterized in that: The bottom surface of the bracket (3) is provided with a waist-shaped long hole (7) arranged parallel to the length direction of the cross beam plate (2), and bolts passing through the waist-shaped long hole (7) and the through holes on the cross beam plate (2) and nuts matched with the bolts are used to fix the bracket (3) and the cross beam plate (2) into one body in an adjustable position.

4. The adjustable dual-motor starting device for a diesel engine set according to claim 3 is characterized in that: The bracket (3) adopts an inverted T-shaped structure consisting of a bottom plate (3-1) and a vertical plate (3-2) fixed on the bottom plate (3-1), and the waist-shaped long hole (7) is arranged on the bottom plate (3-1).

5. The adjustable dual-motor starting device for a diesel engine set according to claim 4 is characterized in that: The vertical plate (3-2) is provided with a waist-shaped hole arranged vertically, and a bolt connected to the pneumatic motor (4) passes through the waist-shaped hole and is adapted to be connected with a nut, thereby achieving height-adjustable installation of the pneumatic motor (4) on the vertical plate (3-2).

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