Engine crankcase cooling structure

Abstract

The utility model discloses an engine crankcase cooling structure, and relates to the technical field of crankcases. The engine comprises an engine mechanism, the engine mechanism comprises a crankcase, a connecting rod is fixedly connected to the top of the crankcase, a piston is arranged at the top of the crankcase, a crankshaft is arranged at the bottom of the crankcase, and a protective cover is arranged at the bottom of the crankcase. The force for driving the rotating rod to rotate through the output shaft of the motor is matched with the components such as the fixed rod, the fixed frame and the threaded rod, so that the rotating rod is driven to rotate through the motor, the fan blades on the rotating rod are driven to rotate through the rotation of the rotating rod, the gear A on the rotating rod is driven to rotate, and then the gear B is driven to rotate; and therefore, a gear C is driven to rotate, a sliding sleeve is driven to slide on a lead screw through a connecting column, and the effect of cooling the crankshaft through rotation of fan blades is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crankcases, in particular to a cooling structure of an engine crankcase. Background Art

[0002] Most of the existing scooter engines are forced air-cooled engines. Except for the bottom of the engine crankcase which is in contact with the outside world, the rest of the engine is almost completely surrounded by the covering parts of the vehicle. The heat dissipation of the engine is very poor, resulting in a high temperature and low viscosity of the engine oil, which reduces the lubricating effect of the oil on the parts inside the engine. In the long run, the service life of the engine will be greatly reduced.

[0003] According to a disclosed engine left crankcase cooling structure and right crankcase cooling structure (publication number: CN202900361U), two cooling structures are included, and heat sinks are respectively provided on the bottom surface of the outer surface of the first oil chamber and the second oil chamber of the left crankcase and the right crankcase. And the heat sink structure is further designed in a targeted manner. The structure is simple and greatly improves the heat dissipation effect of the crankcase. It can effectively reduce the engine oil temperature and extend the life of the engine. In addition, the utility model can also enhance the strength of the bottom of the crankcase. In the above device, it is difficult to achieve uniform heat dissipation of the crankshaft in the crankcase through the cooperation of components such as the left crankcase and the right crankcase, which needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide an engine crankcase cooling structure, which drives a rotating rod to rotate through a motor, and through the rotation of the rotating rod, drives the fan blades thereon to rotate, and at the same time drives the gear A thereon to rotate, and then drives the gear B to rotate, thereby driving the gear C to rotate, and then drives the sliding sleeve to slide on the screw rod through the connecting column, thereby solving the existing problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an engine crankcase cooling structure, comprising an engine mechanism, the engine mechanism comprising a crankcase, a connecting rod is fixedly connected to the top of the crankcase, a piston is arranged on the top of the crankcase, a crankshaft is arranged at the bottom of the crankcase, a protective cover is arranged at the bottom of the crankcase, and an oil inlet pipe is fixedly penetrated on one side of the crankcase;

[0007] A cooling device is provided inside the engine mechanism, and the cooling device includes a fixing rod, one end of the fixing rod is fixedly connected to the bottom of the crankcase, the other end of the fixing rod is fixedly connected to a fixing frame, a threaded rod is fixedly connected to the inner side of the fixing frame, a lead screw is fixedly connected to the inner side of the fixing frame, a sliding sleeve is penetrated at one end of the lead screw away from the fixing frame and is slidably connected to the sliding sleeve, a motor is fixedly connected to the top of the sliding sleeve, a rotating rod is fixedly connected to the output shaft of the motor, a fan blade is fixedly connected to the circumferential surface of the rotating rod, a gear A is penetrated at one end of the rotating rod close to the motor and is fixedly connected to the gear A, a lifting thread is provided on the threaded rod, a gear C is threadedly connected at one end of the threaded rod away from the fixing frame, a connecting column is fixedly connected to one side of the sliding sleeve, and an end of the connecting column away from the sliding sleeve is rotatably connected to the gear C, a positioning rod is fixedly connected to one side of the motor, a gear B is penetrated at one end of the positioning rod away from the motor and is rotatably connected to the gear B, the gear A and the gear B are meshed with each other, and the gear B and the gear C are meshed with each other.

[0008] Furthermore, the connecting rods are in a plurality and arranged in groups of two along a linear array on top of the crankcase, and the crankshaft is located between the protective cover and the crankcase. The above design facilitates fixed connection with the inner wall of the vehicle through the connecting rods.

[0009] Furthermore, the number of the fixing rods is several, two by two in a group, and arranged along a linear array at the bottom of the crankcase, the sliding sleeve is located inside the fixing frame, and the gear C is located inside the fixing frame. The above design is conducive to fixing the fixing frame.

[0010] Furthermore, the gear C and the sleeve are located on the same horizontal line, the number of the blades is three, and they are arranged in a circular array on the circumferential surface of the rotating rod. The above design is conducive to the rotation of the blades to ensure the strength of the wind force.

[0011] Furthermore, the gear B is located between gear A and gear C, and the connecting column is located below gear B. The above design is conducive to the linkage between gears.

[0012] Furthermore, the crankshaft is located on the inner wall of the groove at the bottom of the crankcase and is rotatably connected to the inner wall of the groove. The protective cover is C-shaped, and the concave surface of the protective cover is meshed with the circumferential surface of the crankshaft. The above design is conducive to protecting the crankshaft and preventing it from being oxidized and corroded.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model drives the rotating rod to rotate through the output shaft of the motor, and cooperates with the fixed rod, the fixed frame, the threaded rod and other components to achieve the rotation of the rotating rod driven by the motor. The rotation of the rotating rod drives the fan blades thereon to rotate, and at the same time drives the gear A thereon to rotate, and then drives the gear B to rotate, thereby driving the gear C to rotate, and then drives the sliding sleeve to slide on the screw rod through the connecting column, thereby achieving the effect of heat dissipation of the crankshaft through the rotation of the fan blades.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the crankcase of the utility model when viewed from above;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the crankshaft of the utility model when viewed from above;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing frame of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Engine mechanism; 101. Crankcase; 102. Connecting rod; 103. Piston; 104. Crankshaft; 105. Oil inlet pipe; 106. Protective cover; 2. Cooling device; 201. Fixed rod; 202. Fixed frame; 203. Threaded rod; 204. Screw rod; 205. Sliding sleeve; 206. Motor; 207. Rotating rod; 208. Gear A; 209. Positioning rod; 210. Gear B; 211. Gear C; 212. Connecting column; 213. Fan blade. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to 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 the embodiments. 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.

[0024] See also Figure 1-4 The utility model is an engine crankcase cooling structure, comprising an engine mechanism 1, the engine mechanism 1 comprising a crankcase 101, a connecting rod 102 is fixedly connected to the top of the crankcase 101, a piston 103 is arranged on the top of the crankcase 101, a crankshaft 104 is arranged at the bottom of the crankcase 101, a protective cover 106 is arranged at the bottom of the crankcase 101, and an oil inlet pipe 105 is fixedly penetrated on one side of the crankcase 101;

[0025] The engine mechanism 1 is provided with a cooling device 2, which includes a fixed rod 201, one end of which is fixedly connected to the bottom of the crankcase 101, the other end of which is fixedly connected to a fixed frame 202, a threaded rod 203 is fixedly connected to the inner side of the fixed frame 202, a screw rod 204 is fixedly connected to the inner side of the fixed frame 202, a sleeve 205 is passed through the end of the screw rod 204 away from the fixed frame 202, and the end of the screw rod 204 is slidably connected to the sleeve 205, a motor 206 is fixedly connected to the top of the sleeve 205, the output shaft of the motor 206 is fixedly connected to a rotating rod 207, a fan blade 213 is fixedly connected to the circumferential surface of the rotating rod 207, and the rotating rod 207 is close to the outer surface of the rotating rod 207. A gear A208 passes through one end of the motor 206 and is fixedly connected to the gear A208. A lifting thread is provided on the threaded rod 203. The end of the threaded rod 203 away from the fixed frame 202 is threadedly connected to the gear C211. A connecting column 212 is fixedly connected to one side of the sleeve 205. The end of the connecting column 212 away from the sleeve 205 is rotatably connected to the gear C211. A positioning rod 209 is fixedly connected to one side of the motor 206. The end of the positioning rod 209 away from the motor 206 passes through a gear B210 and is rotatably connected to the gear B210. The gear A208 and the gear B210 are meshed with each other, and the gear B210 and the gear C211 are meshed with each other.

[0026] There are several connecting rods 102 , which are arranged in groups of two and arranged along a linear array on the top of the crankcase 101 . The crankshaft 104 is located between the protective cover 106 and the crankcase 101 . The above design facilitates fixed connection with the inner wall of the vehicle through the connecting rods 102 .

[0027] There are several fixing rods 201 , which are arranged in groups of two and are arranged along a linear array at the bottom of the crankcase 101 . The sliding sleeve 205 is located inside the fixing frame 202 , and the gear C211 is located inside the fixing frame 202 . The above design is conducive to fixing the fixing frame 202 .

[0028] The gear C211 and the sleeve 205 are located on the same horizontal line. There are three blades 213 arranged in a circular array on the circumferential surface of the rotating rod 207. The above design is conducive to the rotation of the blades 213 to ensure the strength of the wind force.

[0029] The gear B210 is located between the gear A208 and the gear C211, and the connecting column 212 is located below the gear B210. The above design is conducive to the linkage between the gears.

[0030] Among them, gear A208, gear B210 and gear C211 all adopt bevel gear design.

[0031] The crankshaft 104 is located on the inner wall of the groove at the bottom of the crankcase 101 and is rotatably connected to the inner wall of the groove. The protective cover 106 is C-shaped, and the concave surface of the protective cover 106 is meshed with the circumferential surface of the crankshaft 104. The above design is beneficial to protecting the crankshaft 104 and preventing it from being oxidized and corroded.

[0032] A specific application of this embodiment is: the present application drives the rotating rod 207 to rotate through the motor 206, and then drives the fan blades 213 thereon to rotate at high speed through the rotation of the rotating rod 207, and at the same time drives the gear A208 thereon to rotate through the rotation of the rotating rod 207, and then drives the gear B210 to rotate, thereby driving the gear C211 to rotate, and then the gear C211 drives the sliding sleeve 205 to move horizontally on the screw rod 204 through the connecting column 212, thereby achieving the rotation of the fan blades 213, Thereby achieving the effect of heat dissipation of the crankshaft 104. When the motor 206 drives the rotating rod 207 to rotate clockwise, the sleeve 205 is driven to move horizontally to the right on the screw rod 204. When the motor 206 drives the rotating rod 207 to rotate counterclockwise, the sleeve 205 is driven to move horizontally to the left on the screw rod 204. The motor 206 drives the rotating rod 207 to rotate in different clockwise directions, thereby driving the sleeve 205 to repeatedly move horizontally back and forth on the screw rod 204, thereby achieving the effect of uniform heat dissipation.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An engine crankcase cooling structure, comprising an engine mechanism (1), characterized in that: The engine mechanism (1) comprises a crankcase (101), a connecting rod (102) is fixedly connected to the top of the crankcase (101), a piston (103) is arranged on the top of the crankcase (101), a crankshaft (104) is arranged on the bottom of the crankcase (101), a protective cover (106) is arranged on the bottom of the crankcase (101), and an oil inlet pipe (105) is fixedly penetrated through one side of the crankcase (101); A cooling device (2) is provided inside the engine mechanism (1), and the cooling device (2) comprises a fixed rod (201), one end of the fixed rod (201) is fixedly connected to the bottom of the crankcase (101), the other end of the fixed rod (201) is fixedly connected to a fixed frame (202), a threaded rod (203) is fixedly connected to the inner side of the fixed frame (202), a screw rod (204) is fixedly connected to the inner side of the fixed frame (202), a sliding sleeve (205) is passed through the end of the screw rod (204) away from the fixed frame (202), and the end is slidably connected to the sliding sleeve (205), a motor (206) is fixedly connected to the top of the sliding sleeve (205), an output shaft of the motor (206) is fixedly connected to a rotating rod (207), a fan blade (213) is fixedly connected to the circumferential surface of the rotating rod (207), and the rotating rod (20 7) A gear A (208) is passed through the end close to the motor (206) and is fixedly connected to the gear A (208); a lifting thread is provided on the threaded rod (203); the end of the threaded rod (203) away from the fixed frame (202) is threadedly connected to the gear C (211); a connecting column (212) is fixedly connected to one side of the sliding sleeve (205); the end of the connecting column (212) away from the sliding sleeve (205) is rotatably connected to the gear C (211); a positioning rod (209) is fixedly connected to one side of the motor (206); a gear B (210) is passed through the end of the positioning rod (209) away from the motor (206) and is rotatably connected to the gear B (210); the gear A (208) and the gear B (210) are meshed with each other; the gear B (210) and the gear C (211) are meshed with each other.

2. An engine crankcase cooling structure according to claim 1, characterized in that: The connecting rods (102) are in a plurality and arranged in groups of two and arranged along a linear array on the top of the crankcase (101). The crankshaft (104) is located between the protective cover (106) and the crankcase (101).

3. An engine crankcase cooling structure according to claim 2, characterized in that: The number of the fixing rods (201) is several, and they are arranged in groups of two and are arranged along a linear array at the bottom of the crankcase (101). The sliding sleeve (205) is located inside the fixing frame (202), and the gear C (211) is located inside the fixing frame (202).

4. The engine crankcase cooling structure according to claim 3, characterized in that: The gear C (211) and the sliding sleeve (205) are located on the same horizontal line. The number of the fan blades (213) is three and they are arranged in a circular array on the circumferential surface of the rotating rod (207).

5. An engine crankcase cooling structure according to claim 4, characterized in that: The gear B (210) is located between the gear A (208) and the gear C (211), and the connecting column (212) is located below the gear B (210).

6. The engine crankcase cooling structure according to claim 5, characterized in that: The crankshaft (104) is located on the inner wall of the groove at the bottom of the crankcase (101) and is rotatably connected to the inner wall of the groove. The protective cover (106) is C-shaped, and the concave surface of the protective cover (106) is meshed with the circumferential surface of the crankshaft (104).

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