CN219159061U

CN219159061U - Power output auxiliary assembly of general gasoline engine assembly water pump and gasoline engine water pump

Info

Publication number: CN219159061U
Application number: CN202320316146.1U
Authority: CN
Inventors: 陈志强; 苗金良; 史春珍; 刘涛; 王新聪
Original assignee: Shandong Huasheng Zhongtian Engineering Machinery Group Co ltd
Current assignee: Shandong Huasheng Zhongtian Engineering Machinery Group Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-09
Anticipated expiration: 2033-02-23

Abstract

The utility model provides a power output auxiliary assembly for a general gasoline engine assembly water pump, which comprises a gasoline engine flywheel, an output shaft and a gasoline engine wind scooper, wherein the gasoline engine flywheel is arranged at a crankshaft power output end of the general gasoline engine, the gasoline engine wind scooper is arranged on a box body of the general gasoline engine, the output shaft is of a T-shaped structure, a transverse plate of the output shaft is fixed on the end face of the gasoline engine flywheel in a clamping and bolt combination mode, an impeller of the water pump is arranged at the top end of a vertical rod of the output shaft in a threaded connection mode, a pump body of the water pump is arranged on the end face of the gasoline engine wind scooper, and the crankshaft, the gasoline engine flywheel, the output shaft and the impeller are coaxially distributed. The power output auxiliary assembly realizes the effective and stable power output of the general gasoline engine to the water pump on the basis of not changing the power transmission structure of the conventional general gasoline engine, so that the general gasoline engine can realize the application range in the water pump field, and the mass production of the general gasoline engine water pump is realized.

Description

Power output auxiliary assembly of general gasoline engine assembly water pump and gasoline engine water pump

Technical Field

The utility model relates to the technical field of gasoline engine water pumps, in particular to a power output auxiliary assembly of a general gasoline engine assembly water pump and a gasoline engine water pump.

Background

The portable general small-sized petrol engine has the advantages of small displacement, flexibility, portability, strong adaptability and the like, and is widely applied to the fields of garden machinery, mini-tiller and the like. The general small gasoline engine has larger use requirement in the application market of the portable water pump, but is limited by the structure, so that mass production is difficult to form.

Traditional petrol engine structure for water pump: the magneto and the starter are arranged at the same end of the crankshaft, and the function of the end is to take charge of starting and ignition of the gasoline engine. The other end of the crankshaft is used as an extension shaft, is provided with a water pump blade and is purely responsible for the output function.

In the prior art, the general gasoline engine is difficult to be used for water pump assembly, and some prototype schemes are that an output shaft is fastened through threads at the tail end of a crankshaft to drive a water pump blade, the jumping of the shaft end is completely uncontrollable, the torque transmission is small, the service life is limited by the strength of the threads, and potential safety hazards exist.

Disclosure of Invention

The utility model aims to provide a power output auxiliary assembly of a general gasoline engine assembled water pump and a gasoline engine water pump, and the power output auxiliary assembly realizes the effective and stable power output of the general gasoline engine to the water pump on the basis of not changing the power transmission structure of the conventional general gasoline engine, so that the general gasoline engine can realize the application range in the water pump field and realize the mass production of the general gasoline engine water pump.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a power take off auxiliary assembly of general gasoline engine assembly water pump, includes the gasoline engine flywheel, gasoline engine wind scooper, output shaft, the gasoline engine flywheel sets up the bent axle power take off end at general gasoline engine, the gasoline engine wind scooper is installed on general gasoline engine's box, just the gasoline engine flywheel is located the gasoline engine wind scooper, the output shaft is T shape structure, the diaphragm of output shaft adopts joint and bolt combination mode to realize the fixation of gasoline engine flywheel terminal surface, the impeller of water pump adopts threaded connection mode to install on the montant top of output shaft, the pump body of water pump is installed on the gasoline engine wind scooper terminal surface, bent axle, gasoline engine flywheel, output shaft and impeller coaxial distribution.

Preferably, two opposite side walls of the bolt connecting columns on the outer end face of the flywheel of the gasoline engine are respectively provided with a section of arc-shaped groove, the two arc-shaped grooves are symmetrically distributed, a transverse plate of the output shaft is provided with a through hole corresponding to a threaded hole of the bolt connecting column, and the lower part of the transverse plate of the output shaft is provided with an annular positioning ring sleeved in the two arc-shaped grooves.

Further, the axial distance between the taper shaft large-diameter reference surface of the taper shaft end of the crankshaft and the outer end surface of the bolt connecting column is L2, and the L2 is 34.5mm; the axial distance between the large diameter reference surface of the conical shaft end of the crankshaft and the end surface of the gasoline engine air guide cover mounted on the gasoline engine box body is L3, and L3 is 5mm.

The utility model provides a petrol engine water pump, includes the power take off auxiliary assembly of above-mentioned general formula petrol engine assembly water pump, this water pump still includes impeller and pump body, the pump body is installed on the petrol engine wind scooper terminal surface, just the front end of montant is located in the pump body, the screw hole cover at impeller middle part is put on the threaded rod that the montant top set up the water seal has been put to the cover on the montant, just the water seal centre gripping is between impeller and pump body.

Preferably, the axial distance between the end face of the gasoline engine air guide cover arranged on the gasoline engine box body and the end face of the gasoline engine air guide cover arranged on the pump body is L4, and the L4 is 38.5mm.

Further, the axial distance between the back surface of the impeller and the inner end surface of the pump body is L1, and L1 is 1.5mm.

The beneficial effects of the utility model are as follows: the utility model has simple structure and convenient processing and manufacturing; the output shaft is connected with the flywheel of the gasoline engine, so that the power of the crankshaft of the gasoline engine can be effectively transmitted to the impeller of the water pump, and the output shaft adopts two bolts to realize the rotation limit with the flywheel of the gasoline engine, so that the transmission of large torque can be realized; the annular positioning ring of the output shaft is coaxial with the vertical rod, and the arc-shaped groove is coaxial with the flywheel, so that the coaxiality of the output shaft and the flywheel can be easily ensured after the output shaft is arranged on the flywheel; the size connection relation among the gasoline engine box body, the gasoline engine air guide cover and the pump body can be conveniently ensured by strictly controlling the machining process, so that the accurate installation position of the pump body on the gasoline engine air guide cover can be easily realized; by using the detection tool and a strict turning technology, the axial distance between the end face of the bolt connecting column of the flywheel of the gasoline engine and the large-diameter reference surface of the taper shaft of the crankshaft can be smoothly ensured, and after the axial distance is effectively ensured, the qualified working gap between the back face of the impeller and the end face of the pump body can be effectively ensured in the subsequent impeller installation process, so that the working stability of the impeller can be ensured.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some preferred embodiments of the utility model and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a longitudinal sectional view of a water pump mounted on a gasoline engine crankshaft;

FIG. 2 is a partial top view of a flywheel of the gasoline engine;

FIG. 3 is a schematic diagram of the detection state of the flywheel of the gasoline engine on the detection tool;

in the figure: the device comprises a flywheel of a gasoline engine 1, a bolt connecting column 11, a threaded hole 111, an arc-shaped groove 12, a wind scooper of the gasoline engine 2, an output shaft 3, a vertical rod 31, a transverse plate 32 and a transverse plate 321 which penetrate through a through hole, a pump body 4, an impeller 5, a crankshaft 6 and a conical shaft end conical shaft of a crankshaft 61, a conical shaft large-diameter reference surface 7, a box body 8, a water seal 8, a detection tool supporting table 9 and a conical shaft of a standard crankshaft 91.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to specific embodiments and fig. 1 to 3, and it is obvious that the described embodiments are only some of the preferred embodiments of the present utility model, but not all embodiments. Similar modifications can be made by those skilled in the art without departing from the spirit of the utility model, and therefore the utility model is not to be limited by the specific embodiments disclosed below.

The utility model provides a power output auxiliary assembly for a general gasoline engine assembled water pump, which comprises a gasoline engine flywheel 1, a gasoline engine wind scooper 2 and an output shaft 3, wherein the gasoline engine flywheel 1 and the gasoline engine wind scooper 2 are all existing structural components on the existing general gasoline engine, and when the power output auxiliary assembly is combined with the water pump, the installation end surfaces of the gasoline engine wind scooper 2 and the gasoline engine flywheel 1 can be properly processed so as to ensure the accurate installation of the water pump, but the end surface processing of the gasoline engine flywheel 1 and the gasoline engine wind scooper 2 does not change the power system of the general gasoline engine, thereby ensuring the application of the general gasoline engine in the water pump field; the engine flywheel 1 is arranged at the power output end of the crankshaft 6 of the general engine, the engine wind scooper 2 is arranged on the box 8 of the general engine, the engine flywheel 1 is positioned in the engine wind scooper 2, the output shaft 3 is finally used for realizing the transmission of the power of the crankshaft 6 to the impeller 5 of the water pump, in the embodiment, the output shaft 3 is of a T-shaped structure and comprises a vertical rod 31 and a transverse plate 32, the output shaft 3 is an integral casting piece and is machined to the required size, the transverse plate 32 of the output shaft 3 is clamped and bolt combined to realize the fixation of the end face of the engine flywheel 1, in particular, a section of arc-shaped groove 12 is arranged on the opposite side walls of two bolt connecting columns 11 on the outer end face of the engine flywheel 1, the two arc-shaped grooves 12 are symmetrically distributed, through holes 321 corresponding to the threaded holes 111 of the bolt connecting columns 11 are arranged on the transverse plate 32 of the output shaft 3, an annular positioning ring 322 sleeved in the two arc-shaped grooves 12 is arranged at the lower part of the transverse plate 32 of the output shaft 3, and when the output shaft 3 is machined to finish the required size processing, the transverse plate 32 is clamped and fastened to realize the fixation of the end face of the engine flywheel 1 by the engine flywheel 1, and the torque is then screwed to the two arc-shaped flywheel 1 through holes 32; the arc-shaped groove 12 is coaxial with the gasoline engine flywheel 1, the annular positioning ring 322 is coaxial with the vertical rod 31, when the annular positioning ring 322 is accurately matched with the arc-shaped groove 12, the coaxiality of the vertical rod 31 and the gasoline engine flywheel 1 can be effectively ensured, the coaxiality of the vertical rod 31 and the crankshaft 6 is ensured, and when the impeller 5 of the water pump is arranged on the vertical rod 31, the coaxiality of the impeller 5 and the crankshaft 6 can be ensured; the impeller 5 of the water pump is arranged at the top end of the vertical rod 31 of the output shaft 3 in a threaded connection mode, the pump body 4 of the water pump is arranged on the end face of the gasoline engine wind scooper 2, and when the crankshaft 6, the gasoline engine flywheel 1, the output shaft 3 and the impeller 5 form coaxial distribution, the crankshaft 6 can be ensured to drive the impeller 5 to stably rotate.

In the practical application process, in order to realize the accurate positioning and installation of the impeller 52 on the output shaft 3 so as to ensure the normal operation of the water pump, the axial distance between the conical shaft large-diameter reference surface 61 of the conical shaft end of the crankshaft and the outer end surface of the bolt connecting column 11 is defined as L2, and the L2 is 34.5mm; when the installation and positioning size of the L2 of 34.5mm is realized, the matching of the flywheel 1 and the crankshaft 6 of the gasoline engine needs to be pre-detected. In this embodiment, in order to facilitate accurate machining of 34.5mm, it is necessary to perform auxiliary detection by means of a detection tool and a standard taper shaft 91 identical to the taper shaft of the crankshaft, the detection tool includes a detection tool support table 9, the detection tool support table 9 is horizontally disposed on the ground, the taper shaft 91 is vertically and fixedly disposed on the upper plane of the detection tool support table 9, when the detection tool is used for determining 34.5mm of assembly size, a worker first uses a three-coordinate measuring machine to implement height position data of the taper shaft large diameter reference surface of the taper shaft 91, then uses a graphic calculation method to obtain height H1 of the taper shaft large diameter reference surface and the ground, then mounts the gasoline engine flywheel 1 on the taper shaft 91, uses a height gauge to measure the distance H2 from the ground to the upper end face of the bolt connection post 11 of the gasoline engine flywheel 1, and subtracts H1 to obtain a height difference B, when the value of B is greater than 34.5mm, then uses a numerical control machine tool to implement machining of the gasoline engine flywheel 1 to determine 34.5mm, and then in practice, the numerical value of L2 mm can be determined.

In practical application, in order to realize the accurate positioning of the gasoline engine wind scooper 2 on the box 7 so as to realize the accurate positioning of the pump body 4, the axial distance between the taper shaft large diameter reference surface 61 of the taper shaft end of the crankshaft 6 and the end surface of the gasoline engine box where the gasoline engine wind scooper is installed is L3, and L3 is 5mm, in practical application, the positioning data of the taper shaft large diameter reference surface 61 can be realized by using a three-coordinate measuring instrument, then the determination of L3 is realized by using a graph calculation method, and when L3 is greater than 5mm, the end surface of the box 7 is machined by using machining according to requirements, so that L3 is ensured to be 5mm.

The utility model also provides a gasoline engine water pump, which comprises the output auxiliary assembly, the impeller 5 and the pump body 4 disclosed in the embodiment, wherein the pump body 4 is arranged on the end face of the gasoline engine air guide cover 1, the front end of the vertical rod 31 is positioned in the pump body 4, a threaded hole in the middle of the impeller 5 is sleeved on a threaded rod arranged at the top end of the vertical rod 31, a water seal 8 is sleeved on the vertical rod 31, and the water seal 8 is clamped between the impeller 5 and the pump body 4. In practical application, the width dimension of the pump body 4 is a determined value, when the pump body 4 is mounted on the gasoline engine air guide cover 2, the width dimension of the gasoline engine air guide cover 2 influences the distance L1 between the back surface of the impeller 5 and the inner end surface of the pump body 4, when L1 is 1.5mm, the working stability of the impeller 5 in the pump body 4 can be ensured, when the position of the impeller 5 is determined, in order to ensure that L1 is 1.5mm, strict frame work is required on the end surface of the gasoline engine air guide cover 2, on which the pump body 4 is mounted according to requirements; in practical application, the axial distance between the end face of the gasoline engine air guide cover 2 mounted on the gasoline engine box 7 and the end face of the gasoline engine air guide cover 2 mounted on the pump body is L4, when the L4 is set to be 38.5mm, accurate mounting of the pump body 4 can be ensured, and under the condition of accurate mounting of the pump body 4, accurate mounting and positioning of the impeller 5 are added, so that accurate assurance that the L1 is 1.5mm is finally realized.

Other than the technical features described in the specification, all are known to those skilled in the art.

While the preferred embodiments and examples of the present utility model have been described in detail with reference to the accompanying drawings, the present utility model is not limited to the embodiments and examples, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit of the present utility model, and the scope of the utility model is also defined by the appended claims.

Claims

1. The utility model provides a power take off auxiliary assembly of general gasoline engine assembly water pump, includes the gasoline engine flywheel, the gasoline engine wind scooper, the gasoline engine flywheel sets up the bent axle power take off end at general gasoline engine, the gasoline engine wind scooper is installed on the box of general gasoline engine, just the gasoline engine flywheel is located the gasoline engine wind scooper, its characterized in that, this power take off auxiliary assembly still includes the output shaft, the output shaft is T shape structure, the diaphragm of output shaft adopts joint and bolt combination mode to realize the fixed of gasoline engine flywheel terminal surface, the impeller of water pump adopts threaded connection mode to install on the montant top of output shaft, the pump body of water pump is installed on the gasoline engine wind scooper terminal surface, bent axle, gasoline engine flywheel, output shaft and impeller coaxial distribution.

2. The power output auxiliary assembly for the universal gasoline engine assembled water pump according to claim 1, wherein a section of arc-shaped grooves are formed in opposite side walls of two bolt connecting columns on the outer end face of the gasoline engine flywheel, the two arc-shaped grooves are symmetrically distributed, through holes corresponding to threaded holes of the bolt connecting columns are formed in a transverse plate of the output shaft, and an annular positioning ring sleeved in the two arc-shaped grooves is arranged at the lower part of the transverse plate of the output shaft.

3. The power take-off auxiliary assembly for a general gasoline engine assembly water pump according to claim 2, wherein the axial distance between a taper shaft large-diameter reference surface of a taper shaft end of the crankshaft and the outer end surface of the bolt connecting column is L2, and the L2 is 34.5mm; the axial distance between the large diameter reference surface of the conical shaft end of the crankshaft and the end surface of the gasoline engine air guide cover mounted on the gasoline engine box body is L3, and L3 is 5mm.

4. The utility model provides a petrol engine water pump, its characterized in that includes the power take off auxiliary assembly of a general petrol engine assembly water pump according to claim 3, this water pump still includes impeller and pump body, the pump body is installed on the petrol engine wind scooper terminal surface, just the front end of montant is located in the pump body, the screw hole at impeller middle part is put on the threaded rod that the montant top set up the water seal has been put to the cover on the montant, just the water seal centre gripping is between impeller and pump body.

5. The gasoline engine water pump of claim 4, wherein the axial distance between the end face of the gasoline engine air guide cover installed on the gasoline engine box body and the end face of the gasoline engine air guide cover installed on the pump body is L4, and L4 is 38.5mm.

6. The gasoline engine water pump of claim 5, wherein the axial distance between the back surface of the impeller and the inner end surface of the pump body is L1, L1 being 1.5mm.