Power system of mower

Abstract

The utility model belongs to the technical field, and particularly relates to a power system of a mower, which comprises a motor and a reduction gearbox, the motor is a detachable and replaceable element, a motor shaft is arranged in the motor, the motor shaft is exposed out of the front end of the motor and penetrates through the front end of the reduction gearbox, a driving gear is arranged at the front end of the motor shaft, and a transmission gear and a transmission shaft are arranged in the reduction gearbox. The transmission gear is connected with the driving gear and fixed on the transmission shaft, the transmission gear is rotatably fixed in the reduction gearbox through the transmission shaft, a connecting plate is arranged between the outer shell and the motor shell, the connecting plate covers the rear end of the gearbox, and the motor shaft penetrates through the connecting plate to separate the motor from the reduction gearbox. The motor and the reduction gearbox are relatively independent, and the motor is a replaceable element, so that a one-to-many connection mode between the motor and the reduction gearbox is realized, the application range of a power system is expanded, and the reduction gearbox or the motor needs to be wholly disassembled during maintenance, so that the maintenance cost is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field, in particular to a power system of a lawn mower. Background Art

[0002] The power system is an important part of any electrical equipment, just like the human heart, but the existing power system is generally composed of a motor and a reduction gearbox. The motor of the power system is connected to the reduction gearbox as a whole, that is, the reduction gearbox cannot be removed alone or separately. This leads to certain restrictions on the use of the power system, that is, the motor can only be used for this type of reduction gearbox and cannot be grafted onto other reduction gearboxes, or the reduction gearbox can only be used for this type of motor and cannot be grafted onto other motors, thereby increasing the types of motors and reduction gearboxes and reducing the versatility of motors and reduction gears. When producing equipment, factories can only use compatible motors and reduction gearboxes, which increases production costs and is not convenient for factory management. During installation, both the motor and the reduction gearbox need to be replaced, increasing the cost of purchase and use. Summary of the invention

[0003] The purpose of the utility model is to provide a device with a simple structure, more universality, easier installation during production, and reduced production costs.

[0004] The purpose of the utility model is achieved in this way:

[0005] A power system of a lawn mower comprises a motor and a reduction box, wherein a motor bracket is arranged on the motor, and the motor and the motor bracket are detachable and replaceable components, a motor shaft is arranged inside the motor, the motor shaft is exposed from the front end of the motor and is passed through the front end of the reduction box, a driving gear is arranged at the front end of the motor shaft, a transmission gear and a transmission shaft are arranged inside the reduction box, the transmission gear is connected with the driving gear and drives the transmission gear to rotate, the transmission gear is fixed on the transmission shaft, and the transmission gear is rotatably fixed in the reduction box through the transmission shaft, a connecting plate is arranged between the outer shell and the motor shell, the connecting plate cover is arranged at the rear end of the reduction box, and the motor shaft passes through the connecting plate.

[0006] Furthermore, the number of teeth of the transmission gear is greater than the number of teeth of the motor shaft gear; the gear number ratio of the transmission gear to the motor shaft gear is 2:1, the transmission gear and the motor shaft gear are both helical gears, and the thickness of the driving gear is 2-4 mm.

[0007] Furthermore, the motor is provided with a motor shell, the reduction box is provided with an outer shell, the outer shell is provided with a mounting hole, the connecting plate is provided with a connecting hole, the motor shell is provided with a motor hole, and the mounting hole, the connecting hole and the motor hole are fixed together by screws.

[0008] Furthermore, a transmission hole is provided at the rear end of the reduction box, and the front end of the motor shaft is inserted into the transmission hole and connected to the driving gear.

[0009] Furthermore, the upper end of the connecting plate is provided with an upper countersunk hole stop, and the lower end is provided with a lower boss stop, the upper end of the outer shell is provided with an upper boss stop, and the lower end is provided with a lower countersunk hole stop, the upper countersunk hole stop on the connecting plate is connected to the upper boss stop on the outer shell, and the lower boss stop on the connecting plate is connected to the lower countersunk hole stop on the outer shell, so that the connecting plate and the outer shell are designed with a stop.

[0010] Furthermore, a rear countersunk hole stop is provided at the periphery of the mounting hole, a rear boss stop is provided on the motor housing, and the rear countersunk hole stop is connected to the rear boss stop.

[0011] Furthermore, a bearing is provided between the transmission gear and the transmission shaft, the transmission gear is connected to the transmission shaft through the bearing, a fixing portion is provided on the transmission shaft, the fixing portion is located on both sides of the bearing, and the fixing portion abuts against the bearing.

[0012] Furthermore, the reduction box is provided with a front indicating portion, and the rear indicating portion is provided on the rear surface of the connecting plate. Both the front indicating portion and the rear indicating portion are pointed by arrows, and point to the same rotation direction.

[0013] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0014] The utility model aims to provide a simple structure, more universal, easier to install during production, and reduces the production cost, including a motor and a reduction box, a motor bracket is provided on the motor, the motor and the motor bracket are detachable and replaceable components, a motor shaft is provided in the motor, the motor shaft is exposed from the front end of the motor and is passed through the front end of the reduction box, a driving gear is provided at the front end of the motor shaft, a transmission gear and a transmission shaft are provided in the reduction box, the transmission gear is connected with the driving gear and drives the transmission gear to rotate, the transmission gear is fixed on the transmission shaft, the transmission gear is rotatably fixed in the reduction box through the transmission shaft, a connecting plate is provided between the outer shell and the motor shell, the connecting plate cover is arranged at the rear end of the reduction box, and the motor shaft passes through the connecting plate The connecting plate separates the motor and the reduction gearbox, so that the motor and the reduction gearbox exist relatively independently, and the motor is a replaceable component, thereby realizing a one-to-many connection between the motor and the reduction gearbox, expanding the application scope of the power system, improving the versatility of the power system, and being more market-oriented. It can be provided by one or more suppliers at the same time. The motor and the reduction gearbox are separately arranged, which is convenient for later maintenance. Currently on the market, the motor and the reduction gearbox are connected as a whole, and the reduction gearbox or the motor cannot be disassembled separately. During maintenance, the reduction gearbox or the motor needs to be disassembled as a whole, which increases the maintenance cost. The utility model separates the motor and the reduction gearbox. When the reduction gearbox or the motor needs to be replaced, they can be disassembled and replaced separately, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the utility model.

[0016] Figure 2 It is an exploded view of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the utility model with the outer shell removed.

[0018] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0019] Figure 5 It is a structural schematic diagram of the motor of the utility model.

[0020] Figure 6 It is a schematic diagram of the connection structure of the reduction box and the connection plate of the utility model.

[0021] Figure 7 It is a structural schematic diagram of the gear of the utility model.

[0022] Figure 8 It is an exploded view of the reduction box and the connecting plate of the utility model.

[0023] Fig. 9 It is a structural schematic diagram of the shell of the utility model.

[0024] Fig.10 It is a structural schematic diagram of the connecting plate of the utility model.

[0025] Fig.11 It is a schematic diagram of the connection structure of the driving gear and the transmission gear of the utility model.

[0026] The meaning of the symbols in the figure:

[0027] 1-motor; 2-reduction gearbox; 3-motor bracket; 4-motor shaft; 5-driving gear; 6-transmission gear; 7-transmission shaft; 8-motor housing; 9-housing; 10-connecting plate; 11-mounting hole; 12-connecting hole; 13-motor hole; 14-screw; 15-transmission hole; 16-upper countersunk hole stop; 17-lower boss stop; 18-rear countersunk hole stop; 19-rear boss stop; 20-bearing; 21-fixing part; 22-front indicating part; 23-rear indicating part, 24-upper boss stop; 25-lower countersunk hole stop. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with specific embodiments:

[0029] A power system of a lawn mower comprises a motor 1 and a reduction box 2. A motor bracket 3 is provided on the motor 1. The motor 1 and the motor bracket 3 are detachable and replaceable components. A motor shaft 4 is provided in the motor 1. The motor shaft 4 is exposed from the front end of the motor 1 and is passed through the front end of the reduction box 2. A driving gear 5 is provided at the front end of the motor shaft 4. A transmission gear 6 and a transmission shaft 7 are provided in the reduction box 2. The transmission gear 6 is connected with the driving gear and drives the transmission gear 6 to rotate. The transmission gear 6 is fixed on the transmission shaft 7. The transmission gear 6 is rotatably fixed in the reduction box through the transmission shaft 7. A connecting plate 10 is provided between the outer shell 9 and the motor shell 8. The connecting plate 10 is covered on the rear end of the reduction box 2. The motor shaft 4 passes through the connecting plate 10.

[0030] The purpose of the utility model is to provide a simple structure, more universal, easier to install during production, and reduce the production cost, including a motor 1 and a reduction box 2, the motor 1 is provided with a motor bracket 3, the motor 1 and the motor bracket 3 are detachable and replaceable components, the motor 1 is provided with a motor shaft 4, the motor shaft 4 is exposed from the front end of the motor 1, and is penetrated through the front end of the reduction box 2, the front end of the motor shaft 4 is provided with a driving gear 5, the reduction box 2 is provided with a transmission gear 6 and a transmission shaft 7, the transmission gear 6 is connected with the driving gear and drives the transmission gear 6 to rotate, the transmission gear 6 is fixed on the transmission shaft 7, and the transmission gear 6 is rotatably fixed in the reduction box 2 through the transmission shaft 7, a connecting plate 10 is provided between the outer shell 9 and the motor shell 8, the connecting plate 10 is covered at the rear end of the reduction box, the motor shaft 4 is penetrated The connecting plate 10 separates the motor 1 and the reduction box 2, so that the motor 1 and the reduction box 2 exist relatively independently, and the motor 1 is a replaceable component, thereby realizing a one-to-many connection between the motor 1 and the reduction box 2, expanding the application range of the power system, improving the versatility of the power system, and being more market-oriented. It can be provided by one or more suppliers at the same time. The motor 1 and the reduction box 2 are separately arranged, which is convenient for later maintenance. Currently on the market, the motor 1 and the reduction box 2 are integrally connected, and the reduction box 2 or the motor 1 cannot be disassembled separately. During maintenance, the reduction box 2 or the motor 1 needs to be disassembled as a whole, which increases the maintenance cost. The utility model separates the motor 1 and the reduction box 2. When the reduction box 2 or the motor 1 needs to be replaced, they can be disassembled and replaced separately, thereby reducing the maintenance cost.

[0031] Preferably, the number of teeth of the transmission gear 6 is greater than the number of teeth of the gear of the motor shaft 4; the gear number ratio of the transmission gear 6 to the gear of the motor shaft 4 is 2:1, and the transmission gear 6 and the gear of the motor shaft 4 are both helical gears, and the helical teeth and displacement design are performed, which can improve the strength of the pinion and avoid root cutting, and the thickness of the driving gear 5 is 2-4mm, which enhances the strength of the pinion, is thicker than the design wall thickness of similar products, and improves reliability.

[0032] Preferably, the motor 1 is provided with a motor housing 8, the reduction box 2 is provided with a housing 9, the housing 9 is provided with a mounting hole 11, the connecting plate 10 is provided with a connecting hole 12, and the motor housing 8 is provided with a motor hole 13. The mounting hole 11, the connecting hole 12 and the motor hole 13 are fixed together by screws 14. The semi-finished product of the motor and the semi-finished product of the reduction box are assembled in place and locked by screws 14. At this point, the entire assembly process is completed, and the installation is simple and fast.

[0033] Preferably, a transmission hole 15 is opened at the rear end of the reduction box 2 , and the front end of the motor shaft 4 is inserted into the transmission hole 15 and connected to the driving gear 5 .

[0034] Preferably, the upper end of the connecting plate 10 is provided with an upper countersunk hole stop 16, and the lower end is provided with a lower boss stop 17. The upper end of the outer shell 9 is provided with an upper boss stop 24, and the lower end is provided with a lower countersunk hole stop 25. The upper countersunk hole stop 16 on the connecting plate 10 is connected to the upper boss stop 24 on the outer shell 9, and the lower boss stop 17 on the connecting plate 10 is connected to the lower countersunk hole stop 25 on the outer shell 9, so that the connecting plate 10 and the outer shell 9 are designed with a stop, and a stop design is performed between the connecting plate 10 and the outer shell 9, so that the installation positioning is performed and the installation is more precise.

[0035] Preferably, a rear countersunk hole stop 18 is provided on the periphery of the mounting hole 11, and a rear boss stop 19 is provided on the motor housing 8. The rear countersunk hole stop 18 is connected to the rear boss stop 19, and a stop design is provided between the connecting plate 10 and the motor housing 8 for installation positioning and more precise installation.

[0036] Preferably, a bearing 20 is provided between the transmission gear 6 and the transmission shaft 7, and the transmission gear 6 is connected to the transmission shaft 7 through the bearing 20. A fixing part 21 is provided on the transmission shaft 7, and the fixing part 21 is located on both sides of the bearing 20. The fixing part 21 abuts against the bearing 20, thereby avoiding a cantilever structure and improving the reliability and practicality of the design.

[0037] Preferably, a front indicating portion 22 is provided on the reduction box 2, and a rear indicating portion 23 is provided on the rear surface of the connecting plate 10. Both the front indicating portion 22 and the rear indicating portion 23 are pointed by arrows and point to the same rotation direction, which is convenient for observation of steering in design tests and observation of tests in production, which is clear and improves production efficiency, so that after the product is formed, the pass rate and quality consistency are improved.

[0038] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power system for a lawn mower, characterized in that: The invention comprises a motor (1) and a reduction box (2). The motor (1) is provided with a motor bracket (3). The motor (1) and the motor bracket (3) are detachable and replaceable components. The motor (1) is provided with a motor shaft (4). The motor shaft (4) is exposed from the front end of the motor (1) and is passed through the front end of the reduction box (2). The front end of the motor shaft (4) is provided with a driving gear (5). The reduction box (2) is provided with a transmission gear (6) and a transmission shaft (7). The transmission gear (6) is connected with the driving gear and drives the transmission gear (6) to rotate. The transmission gear (6) is fixed on the transmission shaft (7). The transmission gear (6) is rotatably fixed in the reduction box through the transmission shaft (7). A connecting plate (10) is provided between the motor (1) and the reduction box (2). The connecting plate (10) is covered at the rear end of the reduction box (2). The motor shaft (4) passes through the connecting plate (10).

2. A power system for a lawn mower according to claim 1, characterized in that: The number of teeth of the transmission gear (6) is greater than the number of teeth of the gear of the motor shaft (4); the ratio of the number of teeth of the transmission gear (6) to the gear of the motor shaft (4) is 2:1, the transmission gear (6) and the gear of the motor shaft (4) are both helical gears, and the thickness of the driving gear (5) is 2-4 mm.

3. The power system of a lawn mower according to claim 1, characterized in that: The motor (1) is provided with a motor housing (8), the reduction box (2) is provided with a housing (9), the housing (9) is provided with a mounting hole (11), the connecting plate (10) is provided with a connecting hole (12), the motor housing (8) is provided with a motor hole (13), and the mounting hole (11), the connecting hole (12) and the motor hole (13) are fixed together by screws (14).

4. The power system of a lawn mower according to claim 2, characterized in that: The rear end of the reduction box (2) is provided with a transmission hole (15), and the front end of the motor shaft (4) is inserted into the transmission hole (15) and connected to the driving gear (5).

5. The power system of a lawn mower according to claim 3, characterized in that: The upper end of the connecting plate (10) is provided with an upper countersunk hole stop (16), and the lower end is provided with a lower boss stop (17); the upper end of the outer shell (9) is provided with an upper boss stop (24), and the lower end is provided with a lower countersunk hole stop (25); the upper countersunk hole stop (16) on the connecting plate (10) is connected to the upper boss stop (24) on the outer shell (9), and the lower boss stop (17) on the connecting plate (10) is connected to the lower countersunk hole stop (25) on the outer shell (9), so that the connecting plate (10) and the outer shell (9) are designed with stoppers.

6. A power system for a lawn mower according to claim 5, characterized in that: A rear countersunk hole stop (18) is provided at the periphery of the mounting hole (11), a rear boss stop (19) is provided on the housing (9), and the rear countersunk hole stop (18) is connected to the rear boss stop (19).

7. A power system for a lawn mower according to any one of claims 1 to 6, characterized in that: A bearing (20) is provided between the transmission gear (6) and the transmission shaft (7); the transmission gear (6) is connected to the transmission shaft (7) via the bearing (20); a fixing portion (21) is provided on the transmission shaft (7); the fixing portion (21) is located on both sides of the bearing (20); and the fixing portion (21) abuts against the bearing (20).

8. The power system of a lawn mower according to claim 7, characterized in that: The reduction box (2) has a front indicator (22), and the rear surface of the connecting plate (10) has a rear indicator (23). Both the front indicator (22) and the rear indicator (23) point to the same direction of rotation.

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