Large gear box type precise speed reducer

Abstract

The utility model relates to the technical field of speed reducers, and discloses a large gear box type precision speed reducer which comprises a shell, a power input shaft, a transmission shaft, a power output shaft and a brake assembly. A transmission shaft is rotationally connected into the shell through a bearing, a second small gear and a second large gear sequentially and fixedly sleeve the outer side of the transmission shaft through flat keys, a power input shaft is rotationally connected into the portion, located on one side of the transmission shaft, of the shell through a bearing, and a first large gear and a first small gear sequentially and fixedly sleeve the outer side of the power input shaft through flat keys. And a power output shaft is rotationally connected to the interior of the shell on the other side of the transmission shaft through a bearing. Double-gear transmission of the first large gear, the first small gear, the second small gear, the second large gear, the first transmission gear and the second transmission gear is adopted, the precision is high, the magnetic attraction type design is adopted, the power output shaft can be braked, inertia rotation of the power output shaft is prevented, and the device is suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a large gear box type precision speed reducer. Background Art

[0002] It is suitable for occasions with certain requirements for both output torque and speed, such as agricultural machinery, light transport vehicles, and construction machinery. The main purpose of the reducer is to reduce the input speed and increase the output torque to meet the needs of different working machinery. Reducers are widely used in various occasions that require deceleration and torque increase, such as industrial production lines, transportation equipment, and construction machinery.

[0003] Existing large-scale gearbox-type precision reducers use a single gear transmission, which has relatively low precision and no braking structure. After the drive motor stops working, the gears inside the reducer will rotate to a certain extent due to inertia. To address this problem, we proposed a large-scale gearbox-type precision reducer. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a large-scale gearbox-type precision reducer, which solves the problems raised in the background art.

[0005] Technical Solution

[0006] The utility model provides the following technical solutions: a large-scale gearbox-type precision reducer, comprising a housing, a power input shaft, a transmission shaft, a power output shaft and a brake assembly;

[0007] It is characterized in that: the inside of the shell is rotatably connected to the transmission shaft through a bearing, the outside of the transmission shaft is fixed with a second small gear and a second large gear in sequence through a flat key, the inside of the shell on one side of the transmission shaft is rotatably connected to the power input shaft through a bearing, the outside of the power input shaft is fixed with a first large gear and a first small gear in sequence through a flat key, the inside of the shell on the other side of the transmission shaft is rotatably connected to the power output shaft through a bearing, the outside of the power output shaft is fixed with a first transmission gear and a second transmission gear in sequence through a flat key, a brake assembly is provided on one side of the shell, the brake assembly includes a circular box body fixed to one side of the shell, an iron sleeve is penetrated through the inside of the circular box body, and an electromagnetic coil is provided on the outside of the iron sleeve located inside the circular box body.

[0008] Furthermore, a first sealing sleeve is provided on one side of the housing, one end of the power input shaft passes through the first sealing sleeve, and a connecting sleeve is provided on one end of the power input shaft located outside the housing.

[0009] Furthermore, a second sealing sleeve is provided at one end of the inner side of the shell, and one end of the power output shaft passes through the second sealing sleeve.

[0010] Furthermore, a fixing ring is provided on the outside of the circular box body, the circular box body is made of glass fiber material, and the power output shaft passes through the iron sleeve.

[0011] Furthermore, a shell cover is fixed to the top of the shell by bolts, an oil filling hole is opened on the top of the shell cover, and a plugging wire is connected to the inside of the oil filling hole through a threaded groove.

[0012] Furthermore, a tempered glass window is fixed to the outer side of the shell on one side of the circular box body by bolts, and a scale is engraved on one side of the tempered glass window.

[0013] Furthermore, the first transmission gear and the second transmission gear, the first large gear and the first small gear are respectively meshed with the second small gear and the second large gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The drive motor drives the power input shaft and the first large gear and the first small gear on its outer side to rotate. The rotation of the first large gear and the first small gear drives the transmission shaft to rotate through the second small gear and the second large gear, thereby driving the power output shaft to rotate through the first transmission gear and the second transmission gear, thereby reducing the input speed and increasing the output torque at the same time.

[0016] When the drive motor stops working, power is supplied to the electromagnetic coil. When the electromagnetic coil is energized, magnetism is generated inside the iron sleeve, which can adsorb the power output shaft and brake it to prevent it from rotating due to inertia. The round box body made of glass fiber material has high strength and insulation ability, which can prevent the current of the electromagnetic coil from being conducted away;

[0017] This large gearbox type precision reducer adopts a double gear transmission consisting of the first large gear and the first small gear, the second small gear, the second large gear and the first transmission gear, and the second transmission gear. It has high precision and adopts a magnetic design to brake the power output shaft to prevent it from rotating due to inertia. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the shell of the utility model;

[0020] Figure 3 This is a schematic diagram of the brake assembly structure of the present utility model;

[0021] In the figure: 1. Housing; 101. First sealing sleeve; 102. Second sealing sleeve; 2. Power input shaft; 201. First large gear; 202. First small gear; 3. Transmission shaft; 301. Second small gear; 302. Second large gear; 4. Power output shaft; 401. First transmission gear; 402. Second transmission gear; 5. Brake assembly; 501. Round box; 502. Iron sleeve; 503. Electromagnetic coil; 504. Fixing ring; 6. Connecting sleeve; 7. Shell cover; 8. Tempered glass window; 9. Scale; 10. Oil filling hole; 11. Wire plug. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 In the embodiment of the present utility model, it includes a housing 1, a power input shaft 2, a transmission shaft 3, a power output shaft 4 and a brake assembly 5;

[0024] The inside of the shell 1 is rotatably connected to the transmission shaft 3 through a bearing, and the outside of the transmission shaft 3 is fixed with a second small gear 301 and a second large gear 302 in sequence through a flat key. The inside of the shell 1 on one side of the transmission shaft 3 is rotatably connected to the power input shaft 2 through a bearing, and the outside of the power input shaft 2 is fixed with a first large gear 201 and a first small gear 202 in sequence through a flat key. The inside of the shell 1 on the other side of the transmission shaft 3 is rotatably connected to the power output shaft 4 through a bearing, and the outside of the power output shaft 4 is fixed with a first transmission gear 401 and a second transmission gear 402 in sequence through a flat key. A brake assembly 5 is provided on one side of the shell 1, and the brake assembly 5 includes a circular box body 501 fixed to one side of the shell 1, and an iron sleeve 502 is sleeved through the inner side of the circular box body 501, and the iron sleeve 502 is located on the outer side of the inside of the circular box body 501 and is sleeved with an electromagnetic coil 503.

[0025] Among them, a first sealing sleeve 101 is provided on one side of the shell 1, one end of the power input shaft 2 passes through the first sealing sleeve 101, and a connecting sleeve 6 is provided at the end of the power input shaft 2 located on the outside of the shell 1. The setting of the connecting sleeve 6 facilitates the connection between the output shaft of the drive motor and the power input shaft 2. The first sealing sleeve 101 seals between the power input shaft 2 and the shell 1.

[0026] A second sealing sleeve 102 is provided at one end of the inner side of the housing 1 , and one end of the power output shaft 4 passes through the second sealing sleeve 102 . The second sealing sleeve 102 seals between the power output shaft 4 and the housing 1 .

[0027] Among them, a fixing ring 504 is provided on the outside of the circular box body 501. The circular box body 501 is made of glass fiber material. The power output shaft 4 passes through the iron sleeve 502. The setting of the fixing ring 504 facilitates the circular box body 501 to be fixed to one side of the shell 1 by bolts. The circular box body 501 made of glass fiber material has high strength and good insulation performance.

[0028] Among them, a shell cover 7 is fixed to the top of the shell 1 by bolts, and an oil filling hole 10 is opened on the top of the shell cover 7. A blocking wire 11 is connected to the inside of the oil filling hole 10 through a threaded groove. The shell cover 7 can be opened to inspect the gears inside the shell 1. The blocking wire 11 can be opened to pour lubricating oil into the shell 1 through the oil filling hole 10 to lubricate the gears inside the shell 1. The blocking wire 11 is used to seal the oil filling hole 10.

[0029] Among them, a tempered glass window 8 is fixed to the outer side of the shell 1 on one side of the circular box body 501 by bolts, and a scale 9 is engraved on one side of the tempered glass window 8, which makes it convenient for personnel to observe the situation inside the shell 1 through the tempered glass window 8.

[0030] Among them, the first transmission gear 401 and the second transmission gear 402, the first large gear 201 and the first small gear 202 are respectively engaged with the second small gear 301 and the second large gear 302, and the power input shaft 2 rotates through the first large gear 201, the first small gear 202, the second small gear 301 and the second large gear 302 to drive the transmission shaft 3 to rotate, thereby driving the power output shaft 4 to rotate through the first transmission gear 401 and the second transmission gear 402.

[0031] The working principle of the present invention is as follows: the output shaft of the driving motor is connected to the connecting sleeve 6 using a flat key, and the driving motor drives the power input shaft 2 and the first large gear 201 and the first small gear 202 on its outer side to rotate. The first large gear 201 and the first small gear 202 rotate through the second small gear 301 and the second large gear 302 to drive the transmission shaft 3 to rotate, thereby driving the power output shaft 4 to rotate through the first transmission gear 401 and the second transmission gear 402, thereby reducing the input speed and increasing the output torque. The double gear transmission of the first large gear 201 and the first small gear 202, the second small gear 301, the second large gear 302 and the first transmission gear 401, the second transmission gear 402 is adopted, with high precision. When the driving motor stops working, power is supplied to the electromagnetic coil 503. After the electromagnetic coil 503 is energized, magnetism is generated in the iron sleeve 502, which can adsorb the power output shaft 4 and brake it to prevent it from rotating due to inertia. The circular box body 501 made of glass fiber material has high strength and insulation ability, which can prevent the current of the electromagnetic coil 503 from being conducted out.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large gearbox-type precision reducer comprising a housing (1), a power input shaft (2), a transmission shaft (3), a power output shaft (4) and a brake assembly (5); Its characteristics are: The housing (1) is rotatably connected to a transmission shaft (3) via a bearing, and the outer side of the transmission shaft (3) is fixedly sleeved with a second small gear (301) and a second large gear (302) in sequence via a flat key. The housing (1) is located on one side of the transmission shaft (3) and is rotatably connected to a power input shaft (2) via a bearing, and the outer side of the power input shaft (2) is fixedly sleeved with a first large gear (201) and a first small gear (202) in sequence via a flat key. The housing (1) is located on the other side of the transmission shaft (3) and is rotatably connected to a power output shaft (4) via a bearing, and the outer side of the power output shaft (4) is fixedly sleeved with a first transmission gear (401) and a second transmission gear (402) in sequence via a flat key. A brake assembly (5) is provided on one side of the housing (1), and the brake assembly (5) comprises a circular box body (501) fixed to one side of the housing (1), an iron sleeve (502) is sleeved through the inner side of the circular box body (501), and an electromagnetic coil (503) is sleeved on the outer side of the iron sleeve (502) located inside the circular box body (501).

2. The large gearbox type precision reducer according to claim 1, characterized in that: A first sealing sleeve (101) is provided on one side of the housing (1), one end of the power input shaft (2) passes through the first sealing sleeve (101), and a connecting sleeve (6) is provided on one end of the power input shaft (2) located outside the housing (1).

3. The large gearbox type precision reducer according to claim 1, characterized in that: A second sealing sleeve (102) is provided at one end of the inner side of the housing (1), and one end of the power output shaft (4) passes through the second sealing sleeve (102).

4. The large gearbox type precision reducer according to claim 1, characterized in that: A fixing ring (504) is provided on the outside of the circular box body (501). The circular box body (501) is made of glass fiber material. The power output shaft (4) passes through the iron sleeve (502).

5. The large gearbox type precision reducer according to claim 1, characterized in that: A shell cover (7) is fixed to the top of the shell (1) via bolts. An oil filling hole (10) is provided on the top of the shell cover (7). A blocking wire (11) is connected to the inside of the oil filling hole (10) via a threaded groove.

6. The large gearbox type precision reducer according to claim 1, characterized in that: The outer side of the housing (1) located on one side of the circular box body (501) is fixed with a tempered glass window (8) by means of bolts, and a scale (9) is engraved on one side of the tempered glass window (8).

7. The large gearbox type precision reducer according to claim 1, characterized in that: The first transmission gear (401), the second transmission gear (402), the first large gear (201), and the first small gear (202) are respectively meshed with the second small gear (301) and the second large gear (302).

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