WO2016112556A1

WO2016112556A1 - Liquefied fuel engine

Info

Publication number: WO2016112556A1
Application number: PCT/CN2015/071209
Authority: WO
Inventors: 王新君; 刘俊鸿; 陆先高
Original assignee: 温岭正峰动力有限公司
Priority date: 2015-01-12
Filing date: 2015-01-21
Publication date: 2016-07-21
Also published as: CN104533606A; CN104533606B

Abstract

A liquefied fuel engine, comprising a crankcase body (1) provided with an output shaft (13) therein, further comprising a liquefied gas storage tank (3) disposed on the crankcase body (1); the liquefied gas storage tank (3) is located above the output shaft (13), and detachably fixed to the crankcase body (1) via a fastening structure (4). The liquefied fuel engine is safe and convenient to use.

Description

Liquefied fuel engine

Technical field

The invention belongs to the technical field of engines and relates to a liquefied fuel engine.

Background technique

Farming machines, micro tillage machines, lawn mowers, de-icing machines and other working machines are widely used in agriculture and forestry. Taking micro-farming machines as an example, they are powered by small diesel engines or gasoline engines. They are light in weight, small in size and simple in structure. It is widely used in drylands, paddy fields, orchards in plains, mountains and hills. As an independent mechanical device, it is usually necessary to install an engine as a power output.

For example, a Chinese utility model patent application (application number: 200920206914.8) discloses a micro tillage machine, which comprises a frame, an engine, an engine cylinder head, a fuel tank, a transmission box, and a riser. The fuel tank of the micro tillage machine is a rear type, that is, The fuel tank is disposed above the engine cylinder head, the engine of the tiller is disposed on the frame, and the oil tank is fixed on the engine block. As an engine that can be sold and used independently, such as the Chinese utility model patent application (application number: 200920118728.9), a general-purpose engine is disclosed, which includes a crankcase body and a connection to the crankcase body, and is fixed to the crankcase body. The upwardly angled cylinder block, the muffler with the muffler cylinder is installed above the cylinder block and connected to the combustion chamber, the air filter corresponding to the muffler is arranged at one end position of the cylinder block, the lower air hood, the side air deflector and the wind guide The cover and the rope cover are respectively installed around the crankcase body and the cylinder block, and the heat sink is arranged on the outer side surface of the crankcase body and the cylinder block, and the horizontal heat sink is disposed on the upper and lower ends of the heat sink, the engine and the engine The engine on the above-mentioned tiller also adopts a fuel tank. The shape of the fuel tank is processed to be compatible with the external structure of the cylinder, and the fuel tank is directly fixed on the cylinder. After the fuel in the fuel tank is used, the fuel tank needs to be refueled, not only The fuel tank and the outer surface of the cylinder are covered with oil stains, which can cause dirt and dirt, and the operation of the fueling process is troublesome and time-consuming, resulting in work continuity. reduce.

Summary of the invention

The object of the present invention is to solve the above problems in the prior art, and propose a liquefied fuel engine. The liquefied fuel engine is safe and convenient to use.

The object of the present invention can be achieved by the following technical solutions: a liquefied fuel engine including a crankcase body having an output shaft therein, further comprising a liquefied gas tank, the liquefied gas tank setting On the crankcase body, and the liquefied gas tank is located above the output shaft, the liquefied gas tank is detachably fixed to the crankcase body through a fixed structure.

The liquefied gas tank is a separate component. One engine can be equipped with multiple liquefied gas tanks. The liquefied gas tank can be independently filled with propane, or it can be replaced at the working site. It can carry multiple liquefied gas tanks to the working place. That is, the liquefied gas tank used up on the engine can be manually replaced, which is convenient and quick to maintain the consistency of work; at the same time, after the engine is installed on the agricultural equipment such as the tiller, since the liquefied gas tank is disposed on the crankcase, the weight It is more concentrated and overcomes the shortcomings of the existing agricultural machine when the fuel tank is fixed on the handle.

In the above liquefied fuel engine, a thin plate-shaped base is further included, and one side of the base is bent downward to form an elastic connecting flange, and the other side of the base is bent to form a V-shaped cross section. And having a flexible connecting flange 2, the connecting flange 1 and the connecting flange 2 are respectively fixed to the crankcase body, and the base is horizontal, and a gap is formed between the lower portion of the base and the outer wall of the crankcase, the liquefied gas The can is placed on the base. Since the propane in the liquefied gas tank is different from the fuel in the common tank, the propane is stored in the liquefied gas tank in the form of a compressed liquid, so that the safety of the liquefied gas tank is put forward, and the engine is generated during use. Uninterrupted vibration, if the vibration is continuously and obviously transmitted to the liquefied gas tank, there is a safety hazard. Therefore, the engine is provided with a base which is fixed to the crankcase by connecting the flange 1 and the connecting flange 2, Between the lower side of the base and the outer side wall of the crankcase There is a gap, that is, the middle of the base is suspended, and the liquefied gas tank is fixed on the base by a fixed structure, that is, the bottom of the liquefied gas tank is pressed on the upper side of the base, and the vibration generated by the engine can be filtered and relieved by the base, and the base is horizontally disposed to avoid During the vibration process, the liquefied gas tank produces a displacement toward one side, and also makes the vibration of the liquefied gas tank uniform. The crankcase includes a crank chamber and a combustion chamber, and the vibration generated in the crank chamber is amplified as the distance becomes longer, and the combustion is performed. A muffler is arranged above the chamber, and the liquefied gas tank is located above the crank chamber to reduce vibration and improve safety performance.

In the above liquefied fuel engine, the angle between the connecting flange and the base is an acute angle, the outer wall of the crankcase has a plurality of legs, the legs have an inclined mounting surface, and the connecting flange One is attached to the mounting surface and fixed by screws. The vibration generated by the crankcase is transmitted to the connecting flange through the legs. Since the connecting flange has an angle with the horizontal portion of the base, the buffering effect is provided between the two, thereby filtering the vibration on the connecting flange and reducing the transmission to the end. The amount of vibration on the seat.

In the above liquefied fuel engine, the crankcase body has a connecting projection, and the connecting flange 2 and the connecting projection are fixed by a screw. The cross section is V-shaped, that is, it can be compressed or stretched in a slight amount, so that the base has a lateral swaying space in a horizontal position, and the base has a cushioning space up and down, and the connecting flange is used to reduce vibration. At the same time, the connecting flange 1 and the connecting flange 2 are located on the outer side of the liquefied gas tank, so that the vibration needs to be transmitted through the base, that is, it can be relieved by the base, and the influence on the liquefied gas tank is reduced.

In the above liquefied fuel engine, two sides of the base are vertically fixedly connected to the base, and the lower ends of the two connecting plates are fixed to the base edge by screws, and the fixing structure is disposed on the two connecting plates. between. That is, the base supports the liquefied gas tank, and the fixed structure between the connecting plates fixes the liquefied gas tank, and the connecting plate and the base are screwed together instead of the integral structure formed by stamping, which can reduce the direct transmission of vibration to The connecting plate is further transmitted to the liquefied gas tank, the base is rectangular, the connecting flange 1 and the connecting flange 2 are respectively located at two opposite edges, and the two connecting plates are respectively located at the other two opposite edges, that is, away from the base and the crankcase Connected point of the body Move the distance and reduce the amount of vibration.

In the above liquefied fuel engine, the fixing structure includes an elastic ring, and the upper end side edges of the two connecting plates are bent to form an L-shaped connecting portion, and the outer side wall of the elastic ring is fixed to the connecting portion by welding. At both ends, the elastic ring is sleeved on the outer side wall of the liquefied gas tank, and both ends of the elastic ring are fixed by fixing bolts. The elastic ring is a common fastening component. It adopts a strip-shaped fixing piece with a strip shape. The fixing piece is bent into a ring shape, and both ends are connected by fixing bolts. When the fixing bolt is tightened, the elastic ring is tightened. The liquefied gas tank can be tightly held, and when the fixing bolt is loosened, the diameter of the elastic ring becomes large, and the liquefied gas tank can be taken out, so that the replacement of the liquefied gas tank is convenient and quick, and the connecting plate passes through the L-shaped connecting portion and the locking ring. For the connection, one connecting plate and the locking ring have two connection points, that is, the connecting portion has a structural strengthening effect on the elastic ring. Of course, as the fixing of the liquefied gas tank, the fixing structure may also adopt a plurality of positioning bolts, and the upper end of the connecting plate is provided with a plurality of screw holes, the positioning bolt passes through the screw hole and the end of the positioning bolt is pressed against the side wall of the liquefied gas tank.

Compared with the prior art, the liquefied fuel engine has the following advantages:

1. Since the engine uses liquefied fuel propane as fuel and is equipped with liquefied gas tank, the liquefied gas tank can be independently filled with propane, or can be replaced at the work site. When working, it can carry multiple liquefied gas tanks to the working place, that is, Manually replacing the liquefied gas tank used on the engine is convenient and quick, and maintains work consistency.

2. Since the base is fixedly connected to the crankcase by connecting the flange 1 and the connecting flange 2, and the middle of the base is suspended, the vibration generated by the engine can be filtered and relieved by the base, the connecting flange and the connecting flange 2 to reduce Vibration to improve safety.

3. Since the cross section of the connecting flange 2 is V-shaped, it can be slightly compressed or stretched to connect the flange 2, so that the base has a lateral turbulent space in a horizontal position, and the base has a cushioning space. The vibration on the crankcase can be relieved by the base, reducing the impact on the liquefied gas tank.

DRAWINGS

1 is a schematic perspective view of the liquefied fuel engine.

Fig. 2 is a side view showing the structure of the liquefied fuel engine.

3 is a schematic perspective view of a crankcase body.

4 is a schematic perspective view showing the structure of the liquefied fuel engine when the liquefied gas tank is not installed.

In the figure, 1, crankcase body; 11, legs; 12, connecting bumps; 13, output shaft; 14, muffler; 2, base; 21, connecting flange one; 22, connecting flange two; 3, liquefied gas Tank; 4, fixed structure; 41, elastic ring; 42, fixing bolt; 5, connecting plate; 51, connecting portion.

detailed description

The technical solutions of the present invention are further described below with reference to the accompanying drawings, but the present invention is not limited to the embodiments.

As shown in FIG. 1 , a liquefied fuel engine includes a crankcase body 1 , a plate-shaped base 2 and a liquefied gas tank 3 . The crankcase body 1 includes a crank chamber and a combustion chamber. The crank chamber is provided with a crankshaft, a crankshaft and an output shaft. 13 is connected, and a muffler 14 is fixedly connected to the outer side wall of the crankcase 1. The edge of the base 2 is fixedly connected to the crankcase 1. The base 2 is located above the output shaft 13, and the muffler 14 is located at one side of the base 2, and the base is 2 The upper side is horizontal, and there is a gap between the lower side of the base 2 and the outer side wall of the crankcase 1. The liquefied gas tank 3 is disposed on the upper side of the base 2, and the liquefied gas tank 3 is passed through a fixed structure 4 and the base 2. Remove the solid connection. The liquefied gas tank 3 is in the form of a cylinder and is a separate component. One engine can be equipped with a plurality of liquefied gas tanks 3. The liquefied gas tank 3 can be independently filled with propane, or can be replaced at the working site, and can be carried during work. When the plurality of liquefied gas tanks 3 are at the working place, the liquefied gas tanks 3 used up on the engine can be manually replaced, which is convenient and quick, and maintains the consistency of work; since the propane in the liquefied gas tank 3 is different from the fuel in the common tank, the propane is compressed. The post-liquid form is stored in the liquefied gas tank 3, so that the safety of the liquefied gas tank 3 is put forward higher, and the engine generates uninterrupted vibration during use, if the vibration continues, Obviously transmitted to the liquefied gas tank 3, there is a safety hazard. Therefore, the engine is provided with a base 2 which is fixed to the crankcase 1 through the edge, and the lower side of the base 2 and the outer side wall of the crankcase 1 With the gap, that is, the middle portion of the base 2 is suspended, the liquefied gas tank 3 is fixed on the base 2 through the fixing structure 4, that is, the bottom of the liquefied gas tank 3 is pressed on the upper side of the base 2, and the vibration generated by the engine can be filtered and relieved by the base 2. The vibration generated in the crank chamber is amplified as the distance becomes longer. Therefore, the muffler 14 is located above the combustion chamber, and the liquefied gas tank 3 is located above the crank chamber to reduce vibration and improve safety performance.

Specifically, as shown in FIG. 2 and FIG. 3, the base 2 has a rectangular shape, and one side of the base 2 is bent downward to form a connecting flange 21, and the angle between the connecting flange 21 and the base 2 is The acute angle, the outer side wall of the crankcase body 1 has two legs 11 , the leg 11 has an inclined mounting surface, the connecting flange 21 is attached to the mounting surface and is fixed by screws, and the vibration generated by the crankcase 1 is transmitted through the leg 11 For the connection flange 21, since the connection flange 21 has an angle with the horizontal portion of the base 2, there is a buffering effect between the two, thereby filtering the vibration on the connection flange 21 to reduce the vibration transmitted to the base 2. the amount. The opposite edges of the base 2 are bent to form a V-shaped connecting flange 2, and the crankcase 1 has a connecting protrusion 12, and the connecting flange 22 and the connecting protrusion 12 are fixed by screws, the cross section It is V-shaped, that is, it can be compressed or stretched in a small amount, so that the base 2 has a lateral turbulent space in a horizontal position, and also makes the base 2 have an up-and-down cushioning space, which is reduced by the connection flange 21. The vibration is combined, and both the connecting flange 21 and the connecting flange 22 are located outside the liquefied gas tank 3, so that the vibration needs to be transmitted through the base 2, that is, it can be relieved by the base 2, and the influence on the liquefied gas tank 3 is reduced.

As shown in FIG. 4, the fixing structure 4 includes an elastic ring 41. Two upper connecting plates 5 are vertically fixed on the upper side of the base 2. The lower ends of the two connecting plates 5 are fixed to the edge of the base 2 by screws. The upper end side of the connecting plate 5 is bent to form an L-shaped connecting portion 51. The outer side wall of the elastic ring 41 is fixed to both ends of the connecting portion 51 by welding, and the elastic ring 41 is sleeved on the outer side of the liquefied gas tank 3. On the wall, and the elastic ring 41 Both ends are fixed by fixing bolts 42. The elastic ring 41 is a common fastening member, and adopts a strip-shaped fixing piece having a strip shape, and the fixing piece is bent into a ring shape, and both ends thereof are connected by a fixing bolt 42, and when the fixing bolt 42 is tightened The elastic ring 41 can hold the liquefied gas tank 3 tightly. When the fixing bolt 42 is loosened, the diameter of the elastic ring 41 becomes large, and the liquefied gas tank 3 can be taken out, so that the replacement of the liquefied gas tank 3 is convenient and quick. The base 2 supports the liquefied gas tank 3, and the fixing structure 4 between the connecting plates 5 fixes the liquefied gas tank 3, and the connecting plate 5 and the base 2 are screwed together instead of the integral structure formed by stamping. The vibration is directly transmitted to the connecting plate 5, and then transmitted to the liquefied gas tank 3, the base 2 has a rectangular shape, and the connecting flange 21 and the connecting flange 22 are respectively located at opposite edges, and the two connecting plates 5 are respectively located at The two opposite edges, that is, the connection point away from the base 2 and the crankcase body 1, increase the vibration transmission distance and reduce the amount of vibration, and the connecting plate 5 is fixed to the locking ring through the L-shaped connecting portion 51, one connection The plate 5 and the locking ring have two connection points, that is, the connecting portion 51 serves as a structural reinforcement for the elastic ring 41.

The specific embodiments described herein are merely illustrative of the spirit of the invention. A person skilled in the art can make various modifications or additions to the specific embodiments described or in a similar manner, without departing from the spirit of the invention or as defined by the appended claims. The scope.

Although the terms crankcase 1, the legs 11, the connecting lugs 12, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are only used to describe and explain the nature of the invention more conveniently; it is to be construed that any additional limitation is inconsistent with the spirit of the invention.

Claims

A liquefied fuel engine includes a crankcase (1), and an output shaft (13) is disposed in the crankcase (1), further comprising a liquefied gas tank (3), the liquefied gas tank ( 3) is disposed on the crankcase body (1), and the liquefied gas tank (3) is located above the output shaft (13), and the liquefied gas tank (3) passes through a fixed structure (4) and the crankcase body (1) Removable attachment.
The liquefied fuel engine according to claim 1, further comprising a thin plate-shaped base (2), one side of the base (2) being bent downward to form an elastic connecting flange (21), The other side of the base (2) is bent to form a V-shaped and elastic connecting flange 2 (22), and the connecting flange 1 (21) and the connecting flange 2 (22) respectively The crankcase body (1) is fixedly connected, and the base (2) is horizontal, and a gap is formed between the lower portion of the base (2) and the outer side wall of the crankcase body (1), and the liquefied gas tank (3) is disposed at the base (2) on.
The liquefied fuel engine according to claim 2, characterized in that the angle between the connecting flange (21) and the base (2) is an acute angle, and the outer side wall of the crankcase (1) has a plurality of The leg (11) has an inclined mounting surface on the leg (11), and the connecting flange (21) is attached to the mounting surface and fixed by screws.
The liquefied fuel engine according to claim 2, characterized in that the crankcase (1) has a connecting projection (12), and the connecting flange 2 (22) and the connecting projection (12) are screwed. Solid.
The liquefied fuel engine according to claim 2 or 3 or 4, characterized in that two sides of the base (2) are vertically fixed with two connecting plates (5), and the lower ends of the two connecting plates (5) Both are fixed to the edge of the base (2) by screws, and the fixing structure (4) is disposed between the two connecting plates (5).
The liquefied fuel engine according to claim 5, characterized in that the fixing structure (4) comprises an elastic ring (41), and the upper end sides of the two connecting plates (5) are bent to form an L-shaped connection. a portion (51), the outer side wall of the elastic ring (41) is fixedly attached to both ends of the connecting portion (51) by welding, and the elastic ring (41) is sleeved On the outer side wall of the liquefied gas tank (3), both ends of the elastic ring (41) are fixed by fixing bolts (42).