Gear transmission speed reducer

Abstract

The utility model discloses a gear transmission speed reducer which comprises a speed reducer body and an output flange, the speed reducer body comprises a shell and a driving shaft, and a transmission shaft assembly used for transmission is arranged in the shell; the transmission shaft assembly comprises a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are arranged in parallel, two gear sets are arranged between the first transmission shaft and the second transmission shaft, and the two gear sets are cylindrical helical gear sets; the first gear set comprises a first gear at the end of the driving shaft and a first cylindrical bevel gear installed on the first transmission shaft. The first gear set comprises a first gear at the end of the driving shaft and a first cylindrical bevel gear installed on the first transmission shaft. Through the two different bevel gear sets, the transmission ratio of the reduction gearbox is increased, meanwhile, axial force between the first transmission shaft and the second transmission shaft is counteracted, and therefore stable output of the driving shaft is guaranteed, and the reduction gearbox has the advantages of being low in noise, large in transmission ratio, stable in output and good in transmission performance.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a gear transmission reducer. Background Art

[0002] The gear reducer, as a power transmission mechanism, mainly reduces the number of revolutions of the motor to the required number of revolutions by utilizing the speed converter of the gears, and obtains a larger torque in the process.

[0003] With the continuous development of reduction motors, they have been applied in more and more industries, and the performance requirements for reduction motors are also getting higher and higher. Worm gear reducers are the most commonly used type of reducers. Since worm gears have the advantages of large transmission ratio and strong load-bearing capacity, and reducers often carry a certain load during operation, worm gear reducers have a wide range of applications. However, the disadvantages of worm gear reducers are also very obvious. Since the worm gear has axial force during the transmission process, the output shaft is subjected to a large axial force during operation, resulting in unstable output. Utility Model Content

[0004] In view of the problems in the prior art, the utility model aims to overcome the deficiencies of the prior art and provides a gear transmission reducer.

[0005] The utility model solves the technical problem by adopting a technical solution: a gear transmission reducer, including a reducer body and an output flange, characterized in that: the reducer body includes a housing and a drive shaft,

[0006] A transmission shaft assembly for transmission is arranged in the shell; the transmission shaft assembly includes a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are arranged in parallel, and two sets of gear sets are arranged between the first transmission shaft and the second transmission shaft, and both sets of gear sets are cylindrical bevel gear sets.

[0007] Specifically, the first gear set includes a first gear at the end of the driving shaft and a first cylindrical bevel gear installed on the first transmission shaft.

[0008] Specifically, the second gear set includes a second cylindrical bevel gear coaxially mounted with the first transmission shaft and a third cylindrical bevel gear mounted on the second transmission shaft.

[0009] Specifically, the pitch circle diameter of the first cylindrical bevel gear is greater than the pitch circle diameter of the second cylindrical bevel gear, and the pitch circle diameter of the second cylindrical bevel gear is greater than the pitch circle diameter of the third cylindrical bevel gear.

[0010] Specifically, a plurality of bearing seats are fixedly arranged on the inner wall of the shell, the front end of the first transmission shaft is mounted on the bearing seat of the shell through a first ball bearing, and the rear end of the first transmission shaft is mounted on the bearing seat of the shell through a second ball bearing.

[0011] Specifically, the front end of the second transmission shaft is mounted on the bearing seat of the housing through a third ball bearing, and the middle end of the second transmission shaft is mounted on the bearing seat of the housing through a fourth ball bearing.

[0012] Beneficial effects of the utility model:

[0013] (1) The utility model discloses a gear transmission reducer, which improves the transmission ratio of the reduction box through two different sets of helical gear sets, and at the same time makes the axial forces between the first transmission shaft and the second transmission shaft offset each other, thereby ensuring the smooth output of the drive shaft, and has the advantages of low noise, large transmission ratio, smooth output and good transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 The present invention provides a schematic overall structural diagram of a preferred embodiment of a gear transmission reducer.

[0016] Reference numerals:

[0017] 1. Reducer body; 2. Output flange; 10. Drive shaft; 11. Housing; 12. First transmission shaft; 12A. First cylindrical bevel gear; 12B. Second cylindrical bevel gear; 13. Second transmission shaft; 13a. Third cylindrical bevel gear; 22. First ball bearing; 23. Second ball bearing; 24. Needle bearing; 25. Ball bearing. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1 As shown, the gear transmission reducer described in the utility model includes a reducer body 1 and an output flange 2. The reducer body 1 includes a housing 11 and a drive shaft 10.

[0020] A transmission shaft assembly for transmission is arranged in the housing 11; the transmission shaft assembly includes a first transmission shaft 12 and a second transmission shaft 13, the first transmission shaft 12 and the second transmission shaft 13 are arranged in parallel, and two gear sets are arranged between the first transmission shaft 12 and the second transmission shaft 13, and both gear sets are cylindrical helical gear sets;

[0021] The first gear set includes a first gear at the end of the driving shaft 10 and a first cylindrical bevel gear 12A installed on the first transmission shaft 12; the second gear set includes a second cylindrical bevel gear 12B installed coaxially with the first transmission shaft 12 and a third cylindrical bevel gear 13a installed on the second transmission shaft 13.

[0022] During the operation of the reducer, the axial forces generated between the first transmission shaft 12 and the second transmission shaft 13 can offset each other, thereby ensuring the smooth output of the drive shaft 10. It has the advantages of low noise, large transmission ratio, smooth output and good transmission performance.

[0023] Specifically, the pitch circle diameter of the first cylindrical bevel gear 12A is greater than the pitch circle diameter of the second cylindrical bevel gear 12B, and the pitch circle diameter of the second cylindrical bevel gear 12B is greater than the pitch circle diameter of the third cylindrical bevel gear 13a.

[0024] The purpose of changing the transmission ratio is achieved by setting the first cylindrical bevel gear 12A, the second cylindrical bevel gear 12B and the third cylindrical bevel gear 13a. The transmission ratio of the reduction box is improved by two different bevel gear sets.

[0025] Specifically, a plurality of bearing seats are fixedly provided on the inner wall of the shell 11, the front end of the first transmission shaft 12 is installed on the bearing seat of the shell 11 through a first ball bearing 22, and the tail end of the first transmission shaft 12 is installed on the bearing seat of the shell 11 through a second ball bearing 23; the front end of the second transmission shaft 13 is installed on the bearing seat of the shell 11 through a third ball bearing 24, and the middle end of the second transmission shaft 13 is installed on the bearing seat of the shell 11 through a fourth ball bearing 25.

[0026] The second ball bearing 23 and the first ball bearing 22 support the first transmission shaft 12 to ensure the stability of the first transmission shaft 12 during rotation. The third ball bearing 24 and the fourth ball bearing 25 support the second transmission shaft 13.

[0027] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gear transmission reducer, comprising a reducer body (1) and an output flange (2), characterized in that: The reducer body (1) comprises a housing (11) and a drive shaft (10). A transmission shaft assembly for transmission is arranged in the housing (11); the transmission shaft assembly comprises a first transmission shaft (12) and a second transmission shaft (13); the first transmission shaft (12) and the second transmission shaft (13) are arranged in parallel; two sets of gear sets are arranged between the first transmission shaft (12) and the second transmission shaft (13); both sets of gear sets are cylindrical bevel gear sets.

2. A gear transmission reducer according to claim 1, characterized in that: The two gear sets include a first gear set and a second gear set; the first gear set includes a first gear at the end of a driving shaft (10) and a first cylindrical bevel gear (12A) mounted on the first transmission shaft (12).

3. A gear transmission reducer according to claim 2, characterized in that: The second gear set comprises a second cylindrical bevel gear (12B) mounted coaxially with the first transmission shaft (12) and a third cylindrical bevel gear (13a) mounted on the second transmission shaft (13).

4. A gear transmission reducer according to claim 3, characterized in that: The pitch circle diameter of the first cylindrical bevel gear (12A) is larger than the pitch circle diameter of the second cylindrical bevel gear (12B), and the pitch circle diameter of the second cylindrical bevel gear (12B) is larger than the pitch circle diameter of the third cylindrical bevel gear (13a).

5. The gear transmission reducer according to claim 4, characterized in that: The inner wall of the housing (11) is fixedly provided with a plurality of bearing seats; the front end of the first transmission shaft (12) is mounted on the bearing seat of the housing (11) via a first ball bearing (22); and the rear end of the first transmission shaft (12) is mounted on the bearing seat of the housing (11) via a second ball bearing (23).

6. The gear transmission reducer according to claim 5, characterized in that: The front end of the second transmission shaft (13) is mounted on the bearing seat of the housing (11) via a third ball bearing (24), and the middle end of the second transmission shaft (13) is mounted on the bearing seat of the housing (11) via a fourth ball bearing (25).

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