Fixing device for starting machine

Abstract

The utility model discloses a starting generator fixing device which comprises an original engine body, a starting generator assembly is installed outside an engine shell of the original engine body, and the starting generator assembly is coaxially and fixedly connected with an engine crankshaft of the original engine body. The starting generator assembly comprises a transmission shaft body, a stator installation support, a starting generator stator and a starting generator rotor. The utility model has the beneficial effects that on the basis of not changing the structure of the original engine body, the combined arrangement of the external starting generator can be completed only by means of the engine crankshaft and the engine shell of the original engine body, and the combined arrangement mode of the starting generator assembly is simple and easy to realize; the size of the aircraft can be reduced to a certain extent, the avionics use design requirement of the aircraft can be met, and the power supply safety of the aircraft is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of aviation piston engine auxiliary components, in particular to a generator fixing device. Background Art

[0002] In the prior art, the power of the generator integrated inside the aviation piston engine used in general UAVs is relatively small, which can only meet the power demand of the engine itself, and cannot take into account the greater power demand of the avionics equipment of the UAV platform. As the functions and uses of UAV platforms continue to expand, the performance of avionics equipment is getting higher and higher, the power is getting higher and higher, and the greater power demand is becoming more and more urgent. As a result, the existing aviation piston engines used in UAVs cannot meet the avionics design needs of UAVs. Utility Model Content

[0003] The purpose of the utility model is to provide a starting generator fixing device in order to solve the above-mentioned problem. Without changing the structure of the original engine body, the combination setting of the external starting generator can be completed by only using the engine crankshaft and engine casing of the original engine body. The combination setting method is simple and easy to implement, and can reduce the size of the aircraft to a certain extent. See the following description for details.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a generator fixing device, comprising an original engine body, wherein a generator assembly is installed outside an engine casing of the original engine body, and the generator assembly is coaxially fixedly connected with an engine crankshaft of the original engine body;

[0006] The generator assembly includes a transmission shaft body, a stator mounting bracket, a generator stator and a generator rotor, one end of the transmission shaft body is coaxially fixedly connected to the end of the engine crankshaft extending outside the engine casing by inserting a transmission shaft fixing bolt through the inner circumference, the stator mounting bracket for coaxially fixing the generator stator is fixedly installed on the outside of the engine casing by inserting a bracket fixing bolt through the outer circumference, and the generator stator is coaxially fixedly connected to the periphery of the stator mounting bracket by inserting a stator fixing bolt through the inner circumference, a plurality of axial rotor mounting studs are integrated on the outer circumference of the other end of the transmission shaft body, the rotor mounting studs of the transmission shaft body are coaxially fixedly connected to the generator rotor by adding a rotor clamping nut, and the generator rotor is coaxially arranged on the periphery of the generator stator, so as to drive the generator rotor to rotate by driving the transmission shaft body to rotate through the engine crankshaft, so that the rotating generator rotor can cooperate with the fixed generator stator to generate electricity.

[0007] Preferably, the stator mounting bracket is a funnel-shaped cover, and the transmission shaft body passes through the small opening of the stator mounting bracket in a coaxial sliding fit manner.

[0008] Preferably, the inner periphery of the generator stator is coaxially fixed to the small outer periphery of the stator mounting bracket by inserting and installing the stator fixing bolts, and the large outer periphery of the stator mounting bracket is fixed to the outside of the engine casing by inserting and installing the bracket fixing bolts.

[0009] Preferably, a drive pulley is coaxially integrated on the outer periphery of the transmission shaft body, a water pump body is integrated on the outside of the original engine body, and the drive pulley is connected to the water pump body through a belt.

[0010] Preferably, a notch is provided on the periphery of the stator mounting bracket to allow the belt to pass smoothly.

[0011] Preferably, the rotor clamping nut is a locking nut coaxially provided with a washer.

[0012] Preferably, both ends of the transmission shaft body are provided with stoppers, and the stoppers close to the engine crankshaft are used to limit the installation coaxiality of the transmission shaft body and the engine crankshaft, and the stoppers close to the generator rotor are used to limit the installation coaxiality of the generator rotor and the transmission shaft body.

[0013] The above-mentioned generator fixing device is adopted, specifically in the setting of the original engine body, because the engine crankshaft is coaxially fixedly connected to one end of the transmission shaft body by adding the transmission shaft fixing bolt at the outer position of the original engine body, and at the same time, the stator mounting bracket for coaxially fixing the generator stator is fixedly installed on the outside of the engine casing of the original engine body by inserting and adding the bracket fixing bolt, and the generator stator is coaxially fixed to the periphery of the stator mounting bracket by inserting and adding the stator fixing bolt, and the rotor mounting stud at the other end of the transmission shaft body is coaxially fixedly connected to the generator rotor by adding the rotor clamping nut, and the generator rotor is coaxially arranged on the periphery of the generator stator, so that the combination setting of the external generator can be completed without changing the structure of the original engine body, only by using the engine crankshaft and the engine casing of the original engine body, and the combination setting method of the generator assembly is simple and easy to implement, which can reduce the volume of the aircraft to a certain extent, and can meet the aircraft's requirements The avionics use design needs to ensure the power supply safety of the aircraft. Since it is only necessary to change the installation interface size of the stator mounting bracket and the generator stator through the stator fixing bolt, and at the same time change the installation interface size of the transmission shaft body and the generator rotor through the rotor clamping nut, the generator assemblies of different specifications can be combined and arranged on the outside of the original engine body, which meets the installation and setting needs of the generator assemblies of various powers and improves the general use range. In addition, since the transmission shaft body adopts an integrated design, the transmission pulley for driving the water pump body and the rotor mounting stud for installing the generator rotor are integrated, so that the water pump body can be driven by the belt drive driven by the transmission pulley, which enriches the use function of the transmission shaft body. At the same time, the stoppers are respectively provided at both ends of the transmission shaft body, and the two stoppers are respectively used to limit the installation of the generator rotor and the transmission shaft body, thereby ensuring the coaxiality requirements of the generator rotor and the engine crankshaft, and ensuring the normal operation of the original engine body during high-speed operation.

[0014] The beneficial effects are as follows: 1. The utility model coaxially connects the engine crankshaft with one end of the transmission shaft body by adding a transmission shaft fixing bolt at the outer side of the original engine body, and at the same time, a stator mounting bracket for coaxially fixing the generator stator is fixedly installed on the outside of the engine casing of the original engine body by inserting and adding a bracket fixing bolt, and the generator stator is coaxially fixed to the periphery of the stator mounting bracket by inserting and adding a stator fixing bolt, and the rotor mounting stud at the other end of the transmission shaft body is coaxially fixed to the generator rotor by adding a rotor clamping nut, and the generator rotor is coaxially arranged on the periphery of the generator stator, so that the combination setting of the external generator can be completed without changing the original engine body structure, only with the engine crankshaft and engine casing of the original engine body, and the combination setting method of the generator assembly is simple and easy to implement, which can reduce the volume of the aircraft to a certain extent, and at the same time can meet the avionics design requirements of the aircraft and ensure the power supply safety of the aircraft;

[0015] 2. The installation interface size of the stator mounting bracket and the stator fixing bolts of the generator stator is changed accordingly, and the installation interface size of the rotor clamping nut of the transmission shaft body and the generator rotor is changed accordingly. In this way, different specifications of generator assemblies can be combined and set on the outside of the original engine body, which meets the installation and setting needs of generator assemblies of various powers and improves the general scope of use;

[0016] 3. The drive shaft body adopts an integrated design, which integrates a drive pulley for driving the water pump body and a rotor mounting stud for installing the generator rotor. In this way, the water pump body can be driven by the drive pulley driving the belt drive, which enriches the use function of the drive shaft body. At the same time, stoppers are respectively provided at both ends of the drive shaft body, and the two stoppers are respectively used to limit the installation of the generator rotor and the drive shaft body, thereby ensuring the coaxiality requirements of the generator rotor and the engine crankshaft, ensuring the normal operation of the original engine body during high-speed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative work.

[0018] Figure 1 It is an overall exploded schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the transmission shaft body of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection position between the stator mounting bracket and the engine casing of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection position between the stator of the generator and the stator mounting bracket of the utility model;

[0022] Figure 5 It is a schematic diagram of the connection position between the transmission shaft body and the engine crankshaft of the utility model;

[0023] Figure 6 It is a schematic diagram of the connection position between the generator rotor and the transmission shaft body of the utility model.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Generator assembly; 101. Rotor clamping nut; 102. Generator rotor; 103. Stator fixing bolts; 104. Generator stator; 105. Bracket fixing bolts; 106. Stator mounting bracket; 107. Drive shaft body; 108. Drive shaft fixing bolts; 109. Rotor mounting studs; 1010. Notch for passing objects; 1011. Stopper; 1012. Drive pulley; 2. Original engine body; 201. Water pump body; 202. Belt; 203. Engine crankshaft; 204. Engine case. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0027] See also Figure 1-Figure 6As shown, the utility model provides a generator fixing device, including an original engine body 2, an engine casing 204 of the original engine body 2 is externally mounted with a generator assembly 1, and the generator assembly 1 is coaxially fixedly connected to an engine crankshaft 203 of the original engine body 2, specifically, the generator assembly 1 includes a transmission shaft body 107, a stator mounting bracket 106, a generator stator 104 and a generator rotor 102, one end of the transmission shaft body 107 is coaxially fixedly connected to an end of the engine crankshaft 203 extending outside the engine casing 204 by means of an inner circumference interlaced transmission shaft fixing bolt 108, a stator mounting bracket 106 for coaxially fixing the generator stator 104 is fixedly installed on the outside of the engine casing 204 by means of an outer circumference interlaced bracket fixing bolt 105, and the generator stator 104 is coaxially fixedly connected to the periphery of the stator mounting bracket 106 by means of an inner circumference interlaced stator fixing bolt 103, A plurality of axially arranged rotor mounting studs 109 are integrated on the outer periphery of the other end of the driving shaft body 107. The rotor mounting studs 109 of the transmission shaft body 107 are coaxially fixedly connected with the generator rotor 102 by adding a rotor clamping nut 101, and the generator rotor 102 is coaxially arranged on the periphery of the generator stator 104, so as to drive the generator rotor 102 to rotate by driving the transmission shaft body 107 to rotate through the engine crankshaft 203, so that the rotating generator rotor 102 can cooperate with the fixed generator stator 104 to generate electricity. The purpose of such arrangement is to be able to complete the combination setting of the external generator by only using the engine crankshaft 203 and the engine casing 204 of the original engine body 2 without changing the structure of the original engine body 2. The combination setting method of the generator assembly 1 is simple and easy to implement, which can reduce the volume of the aircraft to a certain extent, and at the same time can meet the avionics design requirements of the aircraft.

[0028] See also Figure 1-Figure 6 As shown, the generator assembly 1 is optimized as follows: the stator mounting bracket 106 is a funnel-shaped cover, and the transmission shaft body 107 passes through the small opening of the stator mounting bracket 106 in a coaxial sliding fit. This arrangement is convenient for preventing the stator mounting bracket 106 from interfering with the normal rotation of the transmission shaft body 107. At the same time, optionally, the inner periphery of the generator stator 104 is coaxially fixed to the small opening outer periphery of the stator mounting bracket 106 by inserting and adding stator fixing bolts 103, and the large opening outer periphery of the stator mounting bracket 106 is fixed to the outside of the engine casing 204 by inserting and adding bracket fixing bolts 105, so that the generator stator 104 can be securely fixed through the stator mounting bracket 106.

[0029] Optionally, a drive pulley 1012 is coaxially integrated on the outer periphery of the transmission shaft body 107, a water pump body 201 is integrated on the outside of the original engine body 2, and the drive pulley 1012 is connected to the water pump body 201 through a belt 202, so that the water pump body 201 can be driven by the drive pulley 1012 driving the belt 202, thereby enriching the use function of the transmission shaft body 107. At the same time, a notch 1010 is provided on the periphery of the stator mounting bracket 106 to allow the belt 202 to pass smoothly. With this arrangement, the stator mounting bracket 106 can be arranged without interfering with the smooth transmission of the belt 202.

[0030] Furthermore, the rotor clamping nut 101 is a lock nut coaxially provided with a washer. Such a configuration makes it easy to prevent the rotor clamping nut 101 from loosening during the high-speed rotation of the generator rotor 102. At the same time, optionally, stoppers 1011 are provided at both ends of the transmission shaft body 107, and the stoppers 1011 close to the engine crankshaft 203 are used to limit the installation coaxiality of the transmission shaft body 107 and the engine crankshaft 203, and the stoppers 1011 close to the generator rotor 102 are used to limit the installation coaxiality of the generator rotor 102 and the transmission shaft body 107. Such a configuration makes it easy to limit the installation of the generator rotor 102 and the transmission shaft body 107 respectively through the two stoppers 1011, thereby ensuring the coaxiality requirement of the generator rotor 102 and the engine crankshaft 203.

[0031] With the above structure, specifically in the setting of the original engine body 2, the engine crankshaft 203 is coaxially fixedly connected with one end of the transmission shaft body 107 by adding a transmission shaft fixing bolt 108 at the outer position of the original engine body 2, and at the same time, a stator mounting bracket 106 for coaxially fixing the generator stator 104 is fixedly installed on the outside of the engine casing 204 of the original engine body 2 by inserting and installing a bracket fixing bolt 105, and the generator stator 104 is coaxially fixedly connected to the periphery of the stator mounting bracket 106 by inserting and installing a stator fixing bolt 103, and the transmission The rotor mounting stud 109 at the other end of the shaft body 107 is coaxially fixedly connected to the generator rotor 102 by adding a rotor clamping nut 101, and the generator rotor 102 is coaxially arranged on the periphery of the generator stator 104, so that the combination setting of the external generator can be completed without changing the structure of the original engine body 2, only with the help of the engine crankshaft 203 and the engine casing 204 of the original engine body 2. The combination setting method of the generator assembly 1 is simple and easy to implement, which can reduce the volume of the aircraft to a certain extent, and can meet the avionics design requirements of the aircraft. The power supply safety of the aircraft is ensured, and since only the installation interface size of the stator mounting bracket 106 and the generator stator 104 interlaced with the stator fixing bolt 103 needs to be changed accordingly, and the installation interface size of the transmission shaft body 107 and the generator rotor 102 interlaced with the rotor clamping nut 101 needs to be changed accordingly, different specifications of the generator assembly 1 can be combined and arranged on the outside of the original engine body 2, which meets the installation and setting needs of the generator assembly 1 of various powers, and improves the general use range. In addition, since the transmission shaft body 107 adopts an integrated design, it is integrated with a water pump body 20 1 and the rotor mounting studs 109 for mounting the generator rotor 102, so that the water pump body 201 can be driven by the transmission pulley 1012 driving the belt 202, thereby enriching the use function of the transmission shaft body 107, and at the same time, stoppers 1011 are respectively provided at both ends of the transmission shaft body 107, and the two stoppers 1011 are respectively used to limit the installation of the generator rotor 102 and the transmission shaft body 107, thereby ensuring the coaxiality requirement of the generator rotor 102 and the engine crankshaft 203, and ensuring that the original engine body 2 works normally during high-speed operation.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A generator fixing device, comprising an original engine body (2), characterized in that: A generator assembly (1) is installed outside the engine casing (204) of the original engine body (2), and the generator assembly (1) is coaxially fixedly connected to the engine crankshaft (203) of the original engine body (2); The generator assembly (1) comprises a transmission shaft body (107), a stator mounting bracket (106), a generator stator (104) and a generator rotor (102); one end of the transmission shaft body (107) is coaxially fixedly connected to the end of the engine crankshaft (203) extending outside the engine casing (204) by inserting a transmission shaft fixing bolt (108) through the inner circumference; the stator mounting bracket (106) for coaxially fixing the generator stator (104) is fixedly installed on the outside of the engine casing (204) by inserting a bracket fixing bolt (105) through the outer circumference; and the generator stator (104) is coaxially fixedly connected to the generator stator (104) by inserting a stator fixing bolt (103) through the inner circumference. A plurality of axially arranged rotor mounting studs (109) are integrated on the periphery of the stator mounting bracket (106) and the periphery of the other end of the transmission shaft body (107); the rotor mounting studs (109) of the transmission shaft body (107) are coaxially fixedly connected to the generator rotor (102) by adding a rotor clamping nut (101); and the generator rotor (102) is coaxially arranged on the periphery of the generator stator (104) to drive the generator rotor (102) to rotate by driving the transmission shaft body (107) to rotate via the engine crankshaft (203), so that the rotating generator rotor (102) can cooperate with the fixed generator stator (104) to generate electricity.

2. A generator fixing device according to claim 1, characterized in that: The stator mounting bracket (106) is a funnel-shaped cover, and the transmission shaft body (107) passes through the small opening of the stator mounting bracket (106) in a coaxial sliding fit manner.

3. A generator fixing device according to claim 2, characterized in that: The inner periphery of the generator stator (104) is coaxially fixedly connected to the small-mouth outer periphery of the stator mounting bracket (106) by inserting and installing the stator fixing bolts (103), and the large-mouth outer periphery of the stator mounting bracket (106) is fixed to the outside of the engine casing (204) by inserting and installing the bracket fixing bolts (105).

4. The generator fixing device according to claim 1, characterized in that: A drive pulley (1012) is coaxially integrated on the outer periphery of the transmission shaft body (107), a water pump body (201) is integrated on the outside of the original engine body (2), and the drive pulley (1012) is connected to the water pump body (201) through a belt (202).

5. A generator fixing device according to claim 4, characterized in that: A notch (1010) is provided on the periphery of the stator mounting bracket (106) to allow the belt (202) to pass smoothly.

6. The generator fixing device according to claim 1, characterized in that: The rotor clamping nut (101) is a locking nut coaxially provided with a washer.

7. A generator fixing device according to any one of claims 1 to 6, characterized in that: Both ends of the transmission shaft body (107) are provided with stoppers (1011), and the stoppers (1011) close to the engine crankshaft (203) are used to limit the installation coaxiality of the transmission shaft body (107) and the engine crankshaft (203), and the stoppers (1011) close to the generator rotor (102) are used to limit the installation coaxiality of the generator rotor (102) and the transmission shaft body (107).

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