CN111490624A - Generator - Google Patents

Abstract

The invention relates to the technical field of power generation, in particular to a generator which comprises a front end cover, a rear end cover, a connecting bolt, a square nut, a limiting gasket and a positioning bush, wherein a first connecting through hole is arranged in a first mounting support lug, a second connecting through hole is arranged in a second mounting support lug, the second connecting through hole comprises a large hole section and a small hole section which are sequentially connected, the square nut and the small hole section are in clearance fit in a connecting and matching mode, the limiting gasket and the large hole section are in clearance fit in a connecting and matching mode, the tightness of connection is ensured by the clearance fit, when the generator is installed, the square nut, the positioning bush and the limiting gasket can be adjusted in a certain position according to the actual installation condition, and the position can be adjusted in the upper, lower, left and right directions, so that the connecting bolt can conveniently and sequentially pass through the first connecting through hole, the positioning bush, the limiting gasket and the, the front end cover, the rear end cover and the engine cylinder body are more convenient to mutually support together by the arrangement, and the installation of the engine is completed.

Description

dynamo

technical field

The present invention relates to the technical field of power generation, and in particular, to a generator.

Background technique

At present, the front end cover and the rear end cover of the generator are respectively provided with two mounting lugs in the circumferential direction, each mounting lug is provided with a connecting through hole, and the connecting through hole of the rear end cover is provided with a bushing nut to connect the The number of bolts is two, one connecting bolt is set through the connecting through hole of the front end cover, the connecting through hole of the engine, and the bushing nut of the rear end cover, and the bushing nut of the front and rear end cover needs to be abutted against the engine block. , in order to install the generator on the engine. The existing method of installing the generator on the engine has the following shortcomings: 1. Since the position of the bushing nut in the connecting through hole is fixed and the position cannot be adjusted, there may be a problem when a connecting bolt is connected to the front end cover, the engine, the rear end, etc. After the cover is connected, the other one cannot pass through the connecting through hole of the front cover, the connecting through hole of the engine, and the bushing nut of the rear cover, so that the generator cannot be installed on the engine; 2. The shape of the bushing nut is cylindrical, and the outer surface It is smooth, the bushing nut and the connecting through hole are too loosely fitted, which will cause the bushing nut to rotate in the connecting through-hole, affecting the connection strength; 3. The bushing nut and the connecting through-hole are too tight, and the bushing cannot be pulled during installation The nut makes the front end cover and the rear end cover abut against the engine block, so that the installation of the generator cannot be completed. Therefore, the existing generator has the problems of inconvenient installation on the engine and poor installation effect, and it is urgent to improve the installation and connection structure thereof.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to provide a generator, which is easy to be installed on the engine and has a good installation and connection effect.

The technical solution adopted by the present invention to solve the technical problem is as follows: the generator includes a front end cover, a rear end cover and connecting bolts, the front end cover is provided with a first mounting lug in the circumferential direction, and the rear end cover is provided with a second mounting lug in the circumferential direction. Mounting lugs, the first mounting lugs are provided with first connecting through holes, the second mounting lugs are provided with second connecting through holes, and the second connecting through holes include large hole sections and small hole sections that are connected in sequence, and The small hole section is located on the right side of the large hole section, and the cross-sectional shape of the small hole section is square;

It also includes a square nut, a limit washer, and a positioning bush. The outer diameter of the limit washer is larger than the outer diameter of the square nut. The limit washer is connected to the left side of the square nut. The cross-sectional shape of the square nut is related to the small hole segment. The cross-sectional shape of the square nut is the same, the square nut is matched and arranged in the small hole section, and the connection and matching mode of the square nut and the small hole section is clearance fit;

The positioning bushing is made of elastic material, the positioning bushing is provided with an elastic opening structure along the axial direction, the positioning bushing and the limiting gasket are matched and arranged in the large hole section, and the positioning bushing is located on the left side of the limiting gasket , the connection and matching method between the limit gasket and the large hole section is clearance fit, and the connection and matching method between the positioning bushing and the large hole section is interference fit;

The connecting bolts are arranged through the first connecting through hole, the positioning bush, the limit washer and the square nut to connect the front end cover and the rear end cover together.

Further, the cross-sectional shape of the small hole segment is a hexagon.

Further, the square nut and the limit washer are integrated into one structure. .

Further, the shape of the large hole section is cylindrical, and the shape of the positioning bushing is cylindrical.

Further, the minimum inner diameter of the positioning bush is larger than the outer diameter of the connecting bolt.

The beneficial effects of the present invention are: by arranging a square nut, a limit washer and a positioning bush, and setting the second connecting through hole into a large hole section and a small hole section connected in sequence, the cross-sectional shape of the small hole section is square, The connection and matching method of the square nut and the small hole section is clearance fit, the positioning bushing and the limit washer are matched and arranged in the large hole section, the connection and matching method of the limit washer and the large hole section is the clearance fit, and the positioning bushing is matched with the large hole section. The connection and fit of the large hole section is an interference fit. The square nut is matched and arranged in the small hole section, so that the square nut will not rotate in the small hole section, and the connecting bolt will not rotate along with it, which improves the installation and connection effect. The positioning bushing is made of elastic material. The positioning bushing is provided with an elastic opening structure arranged in the axial direction. The connection and matching method of the positioning bushing and the large hole section is interference fit. The inner diameter of the positioning bushing can be appropriately changed. The connection and fit between the square nut and the small hole section is clearance fit, and the connection and fit between the limit washer and the large hole section is clearance fit. The interference fit and clearance fit ensure the tightness of the connection, so that when the generator is installed, The square nut, locating bushing, and limit washer can be adjusted to a certain position according to the actual installation situation, and the position can be adjusted in the up, down, left, and right directions, so that the connecting bolt can easily pass through the first connecting through hole, the locating bushing, and the limit. The arrangement of gaskets and square nuts, especially when there are multiple sets of connecting bolts, first mounting lugs, second mounting lugs and other connecting structures, and this arrangement is also more convenient for the front end cover, the rear end cover and the engine block. Press together to complete the installation of the engine.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the enlarged view of A place in Fig. 1;

Fig. 3 is the partial structure schematic diagram of the second mounting lug;

Figure 4 is a schematic view of the square nut installed in the second mounting lug;

Figure 5 is a schematic view of the positioning bushing installed in the second mounting lug;

Marked as: front cover 1, first mounting lug 11, rear end cover 2, second mounting lug 21, large hole section 211, small hole section 212, first connecting through hole 3, square nut 4, limit washer Sheet 5 , positioning bush 6 , elastic opening structure 61 .

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The orientations referred to below are based on the orientations of the various components in FIG. 1 .

As shown in Figures 1 to 5, the generator of the present invention includes a front end cover 1, a rear end cover 2, and connecting bolts. The front end cover 1 is provided with a first mounting lug 11 in the circumferential direction, and the rear end cover 2 is provided in the circumferential direction. There is a second mounting lug 21, the first mounting lug 11 is provided with a first connecting through hole 3, the second mounting lug 21 is provided with a second connecting through hole, and the second connecting through hole includes large holes connected in sequence. Section 211 and small hole section 212, and the small hole section is located on the right side of the large hole section 211, and the cross-sectional shape of the small hole section is square;

It also includes a square nut 4, a limit washer 5, and a positioning bushing 6. The outer diameter of the limit washer 5 is larger than the outer diameter of the square nut 4, and the limit washer 5 is connected and arranged on the left side of the square nut 4. The square nut The cross-sectional shape of 4 is the same as the cross-sectional shape of the small hole section 212, the square nut 4 is matched and arranged in the small hole section 212, and the connection and matching mode of the square nut 4 and the small hole section 212 is clearance fit;

The positioning bushing 6 is made of elastic material. The positioning bushing 6 is provided with an elastic opening structure 61 arranged in the axial direction. 6 is located on the left side of the limit washer 5, the connection and fit between the limit washer 5 and the large hole section 211 is clearance fit, and the connection and fit between the positioning bush 6 and the large hole section 211 is interference fit;

The connecting bolts are arranged through the first connecting through hole 3 , the positioning bushing 6 , the limiting washer 5 , and the square nut 4 to connect the front end cover 1 and the rear end cover 2 together.

The square nut 4 is matched and arranged in the small hole section 212, so that the square nut 4 will not rotate in the circumferential direction in the small hole section 212, and the connecting bolt will not rotate along with it, thereby improving the installation and connection effect. The positioning bushing 6 is made of elastic material. The positioning bushing 6 is provided with an elastic opening structure 61 arranged in the axial direction. The inner diameter can be changed appropriately, the connection and fit between the square nut 4 and the small hole section 212 is clearance fit, the connection and fit between the limit washer 5 and the large hole section 211 is clearance fit, and the interference fit and clearance fit ensure the smoothness of the connection. The tightness allows the square nut 4, the positioning bushing 6, and the limit washer 5 to be adjusted in a certain position according to the actual installation situation when the generator is installed. Set through the first connecting through hole 3, the positioning bush 6, the limit washer 5, and the square nut 4, especially when there are multiple sets of connecting bolts, the first mounting lugs 11, the second mounting lugs 21 and other connecting structures Moreover, this arrangement is also more convenient for the front end cover 1, the rear end cover 2 and the engine cylinder to abut against each other to complete the installation of the engine.

The cross-sectional shape of the small hole section 212 is quadrilateral, hexagonal, octagonal, etc. The present invention is preferably hexagonal, which is convenient for processing and ensures the use effect. In order to facilitate the processing of the square nut 4 and the limit washer 5 and to facilitate the adjustment of the position during installation, the square nut 4 and the limit washer 5 are preferably integrated, and the square nut 4 and the limit washer 5 constitute a flange nut structure , just choose the appropriate flange nut.

In order to facilitate the installation and connection operation, the shape of the large hole section 211 is preferably a cylindrical shape, and the shape of the positioning bushing 6 is preferably a cylindrical shape. Further, the positioning bushing 6 is made of elastic material, and the positioning bushing 6 is provided with an elastic opening structure 61 arranged in the axial direction. The inner diameter of the positioning bushing 6 can be changed according to the inner diameter of the large hole section 211, so that the positioning bushing The sleeve 6 is suitable for large hole segments 211 with different inner diameters, which improves the versatility of the positioning bushing 6 . In order to make it easier for the connecting bolt to pass through the first connecting through hole 3, the limit washer 5 and the square nut 4, the minimum inner diameter of the positioning bushing 6 is larger than the outer diameter of the connecting bolt. When the connecting bolt is connected and fixed, the positioning bushing 6 does not It will interfere with the connecting bolt, which is more convenient for the installation and use of the connecting bolt.

Claims (5)

1. The generator comprises a front end cover (1), a rear end cover (2) and connecting bolts, wherein a first installation support lug (11) is arranged in the circumferential direction of the front end cover (1), a second installation support lug (21) is arranged in the circumferential direction of the rear end cover (2), a first connecting through hole (3) is arranged in the first installation support lug (11), and a second connecting through hole is arranged in the second installation support lug (21), and the generator is characterized in that: the second connecting through hole comprises a large hole section (211) and a small hole section (212) which are sequentially connected, the small hole section is positioned on the right side of the large hole section (211), and the cross section of the small hole section is square;

the positioning device is characterized by further comprising a square nut (4), a limiting gasket (5) and a positioning bushing (6), wherein the outer diameter of the limiting gasket (5) is larger than that of the square nut (4), the limiting gasket (5) is connected and arranged on the left side of the square nut (4), the cross section of the square nut (4) is the same as that of the small hole section (212), the square nut (4) is arranged in the small hole section (212) in a matched mode, and the square nut (4) is in clearance fit with the small hole section (212) in a connected and matched mode;

the positioning bushing (6) is made of elastic materials, an elastic opening structure (61) is arranged on the positioning bushing (6) along the axial direction, the positioning bushing (6) and the limiting gasket (5) are arranged in the large hole section (211) in a matched mode, the positioning bushing (6) is located on the left side of the limiting gasket (5), the limiting gasket (5) and the large hole section (211) are in clearance fit in a connecting and matching mode, and the positioning bushing (6) and the large hole section (211) are in interference fit in a connecting and matching mode;

the connecting bolt penetrates through the first connecting through hole (3), the positioning bushing (6), the limiting gasket (5) and the square nut (4) in a matched mode to connect the front end cover (1) and the rear end cover (2) together.

2. The generator of claim 1, wherein: the cross-sectional shape of the small hole section (212) is hexagonal.

3. The generator of claim 1, wherein: the square nut (4) and the limiting gasket (5) are of an integral structure.

4. The generator of claim 1, wherein: the large hole section (211) is cylindrical in shape, and the positioning bushing (6) is cylindrical in shape.

5. The electrical machine of any one of claims 1 to 4, wherein: the minimum inner diameter of the positioning bush (6) is larger than the outer diameter of the connecting bolt.

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