Gear assembly tool for marine diesel engine belt pump

Abstract

In order to solve the problem that when the diesel engine belt pump is assembled, a transmission gear can rotate with a pump shaft and cannot be assembled, the gear assembly tool for the marine diesel engine belt pump is designed to guarantee stable and reliable assembly of the transmission gear. The gear assembly tool for the marine diesel engine belt pump comprises a fixing ring with an adjusting screw hole, a gear assembly tool body and a gear assembly tool body, and a screw hole is formed in the fixing ring with the adjusting screw hole; and the adjustable simulation teeth are meshed with the outer teeth of the transmission gear, are arranged on the inner side of the fixed ring with the adjusting screw hole and are assembled in the screw hole of the fixed ring with the adjusting screw hole through a fastening nut.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing and assembly, and specifically relates to a gear assembly tool for a marine diesel engine belt pump, which is mainly used for assembling transmission gears on a medium- and high-speed diesel engine belt pump. Background Art

[0002] Diesel engine pumps are widely used on ships. Common diesel engine pumps include seawater pumps, fresh water pumps, fuel pumps, lubricating oil pumps, etc. Wherever there is fluid flowing in a pipeline, there is almost always a pump working to provide power for it. As the "heart artery" of a ship, pump products are of great significance to ships. Most pump products on medium and high-speed diesel engines are equipped with transmission gears. With the upgrading of technology, the categories of medium and high-speed diesel engine pumps are constantly increasing, and the types and specifications of their transmission gears are also increasing.

[0003] One end of the pump shaft is equipped with a transmission gear, and the other end either has no fixed position or is a part that is easily pinched or pried, such as an impeller. The transmission gear itself is a high-strength, high-hardness steel part; and its gear is exposed and can be used for clamping and positioning. Therefore, directly fixing the transmission gear is the best choice.

[0004] Combination Figure 1 The traditional assembly tooling for the transmission gear of a marine diesel engine belt pump is designed to solve the problem that when assembling the transmission gear of a medium-speed diesel engine belt pump, the transmission gear will rotate with the pump shaft under the action of the wrench torque, and the screws and nuts that press the transmission gear and the pump shaft cannot be tightened. Figure 2 , the traditional gear assembly tooling uses a full internal gear fixing ring 10; that is, according to the parameters of the product's transmission gear's external teeth, all the corresponding meshing internal teeth are designed, and then the transmission gear is fixed with this fixing ring 10, and then the transmission gear is pressed onto the pump shaft with the help of tools such as wrenches. However, this type of gear assembly tooling requires cutting the internal teeth of the fixing ring 10, which is difficult to process and has high manufacturing costs; and a traditional gear assembly tooling is almost only suitable for the assembly of a specific type of transmission gear, with a narrow application range, and is a single-matching special tooling that is not interchangeable. That is, as many sets of gear assembly tooling need to be designed and manufactured as many types of gears; and the large number of tooling also brings many inconveniences to its management, maintenance, and use, and increases the economic cost of the enterprise.

[0005] If the traditional gear assembly tooling design is followed, the number of gear assembly tools required will increase year by year, and the investment in such tools will also increase. At the same time, with the increase in the number of tools, the cost of maintenance, upkeep, storage, and replacement will also increase. In addition, if a dedicated gear assembly tool is not produced in time, the production cycle will be delayed; if other auxiliary tools are used temporarily instead, the assembly effect and quality will be affected. Therefore, designing a universal gear assembly tool with a wide range of applications has become a necessary and extremely important task. Utility Model Content

[0006] In order to solve the problem that the transmission gear will rotate with the pump shaft and cannot be assembled when assembling the diesel engine belt pump, this scheme designs a gear assembly tool for the marine diesel engine belt pump to ensure stable and reliable assembly of the transmission gear.

[0007] The technical solution of the utility model is as follows:

[0008] The utility model provides a gear assembly tool for a marine diesel engine belt pump, comprising:

[0009] A fixing ring with an adjustable screw hole, wherein the fixing ring with an adjustable screw hole is provided with a screw hole;

[0010] The adjustable simulated teeth meshing with the outer teeth of the transmission gear are arranged on the inner side of the fixing ring with an adjusting screw hole and assembled into the screw hole of the fixing ring with an adjusting screw hole through a fixing nut.

[0011] Preferably, the external thread of the adjustable simulated tooth forms a thread interlocking with the screw hole of the fixing ring with an adjustable screw hole and the internal thread of the fixing nut.

[0012] Preferably, an annular baffle for axially limiting the transmission gear is formed on the edge of the fixing ring with adjusting screw holes.

[0013] Preferably, the gear assembly tool further comprises: a handle connected to the outer ring of the fixing ring with adjusting screw holes.

[0014] The beneficial effects of the utility model are:

[0015] The gear assembly tooling of the marine diesel engine belt pump realizes the stable and reliable assembly of the transmission gear on the diesel engine belt pump. The simulated teeth can be locked in any direction and the annular baffle is axially positioned, making the operation more convenient and flexible. The adjustable simulated teeth can also be adjusted to adapt to the outer diameter of different transmission gears, expanding the scope of use. In addition, the design concept of the gear assembly tooling can be extended to the assembly of transmission gears of various types and sizes. It is innovative, practical and has promotion value. The subsequent design of such gear assembly tooling can be designed quickly, efficiently, standardly and accurately using it as a template. To a certain extent, it improves the versatility, utilization rate and supply timeliness of the tooling, and reduces the manufacturing cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a transmission gear assembly of a marine diesel engine belt pump provided in the prior art;

[0017] Figure 2 It is a structural schematic diagram of a gear assembly tool for a marine diesel engine belt pump provided in the prior art;

[0018] Figure 3 A schematic diagram of the structure of the gear assembly tool for the marine diesel engine belt pump provided in this embodiment;

[0019] Figure 4 A schematic cross-sectional structure diagram of the gear assembly tooling for a marine diesel engine belt pump provided in this embodiment. DETAILED DESCRIPTION

[0020] like Figure 3 and 4 The present embodiment provides a gear assembly tool for a marine diesel engine belt pump, which is mainly used for assembling transmission gears on a medium- and high-speed diesel engine belt pump.

[0021] like Figure 3 The gear assembly tool of the marine diesel engine belt pump comprises a handle 1, a fixing ring with an adjusting screw hole 2, an adjustable simulated tooth 3, and a fixing nut 4, a total of 4 parts.

[0022] In the gear assembly tool for a marine diesel engine belt pump, the adjustable simulation 3 is installed from the inside into the screw hole of the fixing ring 2 with an adjustable screw hole, and is tightened from the outside by the fixing nut 4. The actual position and direction of the adjustable simulation tooth 3 are controlled by tightening and loosening the adjustable simulation tooth 3. After adjusting the extended length and direction of the adjustable simulation tooth 3 to a suitable position, it is fixed with the fixing nut 4; then the gear assembly tool is put on the transmission gear of the diesel engine belt pump, and then the transmission gear is installed in place with the help of tools such as a wrench. The operation is simple, convenient and practical.

[0023] The external threads of the adjustable simulated tooth 3 are interlocked with the screw holes of the fixing ring 2 with adjustable screw holes and the internal threads of the fixing nut 4. Thus, the external threads of the adjustable simulated tooth 3, the fixing ring 2 with adjustable screw holes and the internal threads of the fixing nut 4 are interlocked, so that the simulated tooth can be tightened in any direction within the adjustment range. The inclination direction of the adjustable simulated tooth 3 and the transmission gear is consistent and stable, making the operation more convenient and flexible.

[0024] Further, if Figure 3 The outer end of the fixing ring 2 with adjusting screw hole is provided with an annular baffle 21, which can play the role of axial limit. The gear assembly tool is buckled on the transmission gear of the product, and the annular baffle 21 is attached to the end face of the transmission gear, and the transmission gear can be assembled. This makes the operation more convenient and reliable.

[0025] Furthermore, the adjustable simulated tooth 3 can be adjusted to extend a greater distance in the radial direction, so that the gear assembly tool can be used for assembling gears of multiple sizes. That is, transmission gears with outer diameters in the same range can be assembled with the same gear assembly tool. This improves versatility and expands the scope of use.

[0026] The gear assembly tool provided in this embodiment can not only realize the effective assembly of the transmission gear through its unique structural design; compared with the traditional gear assembly tool, it also has the advantages of axial limitation, easy production, rapid production, low production cost, and applicability to the assembly of various types and specifications of gears.

[0027] The gear assembly tool provided in this embodiment has obvious advantages in design and structure compared with traditional tooling, reduces production and manufacturing costs, and shortens the production cycle; it is interchangeable and universal in function and can be used for the assembly of gears of multiple types and sizes, thus expanding the scope of use and reducing economic costs; it is widely used in the assembly of water pumps, fuel pumps, and lubricating oil pumps of marine diesel engines.

Claims

1. A gear assembly tool for a marine diesel engine belt pump, characterized in that: include: A fixing ring with an adjustable screw hole (2), wherein the fixing ring with an adjustable screw hole (2) is provided with a screw hole; The adjustable simulated teeth (3) meshing with the outer teeth of the transmission gear are arranged on the inner side of the fixing ring with an adjustable screw hole (2) and assembled into the screw holes of the fixing ring with an adjustable screw hole (2) via a fixing nut (4).

2. The gear assembly tool for a marine diesel engine belt pump according to claim 1, characterized in that: The external threads of the adjustable simulated teeth (3) respectively form thread interlocking with the screw holes of the fixing ring with adjustable screw holes (2) and the internal threads of the fixing nut (4).

3. The gear assembly tool for a marine diesel engine belt pump according to claim 1, characterized in that: An annular baffle (21) for axially limiting the transmission gear is formed on the edge of the fixing ring (2) with an adjusting screw hole.

4. The gear assembly tool for a marine diesel engine belt pump according to claim 1, characterized in that: The gear assembly tool also includes a handle (1) connected to the outer ring of the fixing ring (2) with an adjusting screw hole.

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