Cycloidal pin speed reducer for AGV

Abstract

The utility model discloses a cycloidal pin speed reducer for an AGV (Automatic Guided Vehicle), which is characterized by comprising an eccentric shaft assembly, a gear pin assembly, a cycloidal gear and an output assembly which are connected in sequence, the eccentric assembly comprises an eccentric shaft and an eccentric bearing; the gear needle assembly comprises a gear needle shell and a plurality of gear needle groups uniformly distributed in the gear needle shell; the eccentric shaft is assembled with the cycloidal gear through the eccentric bearing, and the cycloidal gear is arranged in the gear needle shell.

Description

TECHNICAL FIELD

[0001] The application relates to a cycloid pin speed reducer for an AGV. BACKGROUND

[0002] At present, AGV cars in the market all use planetary gearboxes, when the load requirement of the car is large, the speed ratio of the gearbox needs to be increased to improve the torque. However, the increase of the speed ratio leads to the increase of the structure of the gearbox and the increase of the gear number. The cost is much larger than that of a single stage. At present, in the AGV industry, for the load of 1.5T-2T, the market usually uses two-stage planetary reduction, which has large structure and size, and there is an urgent need for a cycloid pin speed reducer which can reduce the cost. SUMMARY

[0003] In view of the above problems, the application aims to provide a cycloid pin speed reducer for an AGV which can reduce the cost.

[0004] The technical scheme of the application is as follows

[0005] A cycloid pin speed reducer for an AGV, comprising an eccentric shaft assembly, a pin assembly, a cycloid wheel and an output assembly connected in sequence; the eccentric assembly comprises an eccentric shaft and an eccentric bearing, the pin assembly comprises a pin shell and a plurality of pin groups uniformly distributed in the pin shell; the eccentric shaft is assembled with the cycloid wheel through the eccentric bearing, and the cycloid wheel is arranged in the pin shell.

[0006] The output assembly comprises an output flange and a cross roller bearing; the pin shell and the output flange are fixed through the cross roller bearing, and a pin shaft is fixed on the output flange.

[0007] The cycloid wheel is connected with the output flange through the pin shaft.

[0008] The eccentric shaft is connected with the output flange through the upper end bearing set, the top end of the eccentric shaft is provided with a shaft retaining ring groove, and a shaft retaining ring is installed on the shaft retaining ring groove.

[0009] A bearing end cover is further assembled on the pin shell.

[0010] The output flange is assembled with a steel ring through a screw, and a rubber wheel assembly is sleeved on the steel ring. The steel ring is fixed on the output flange through a screw, and the rubber wheel assembly is fixed on the steel ring through a screw.

[0011] The upper end bearing set comprises an upper bearing and a lower bearing.

[0012] The eccentric bearing is a full pin bearing.

[0013] Adopting the technical scheme, 1, in order to solve the problem of large cost and size of the speed reducer when the AGV is under heavy load, the cycloidal pin gear is used to replace the planetary reducer. The cycloidal single-stage is used to replace the planetary double-stage, and the one-stage can meet the use requirement, and the structure is smaller and more compact. The overall structure is smaller, so that the required space for installation of the customer is also smaller, and the market is more competitive. The overall production manufacturing cost is also lower. The cycloidal pin gear transmission has high load carrying capacity and low noise.

[0014] 2, adopt double bearing support, increase the contact area of bearing and shaft, make the shaft transmission more stable. The eccentric shaft is fixed in the axial dimension by the shaft retainer, so as to prevent the eccentric shaft from moving axially.

[0015] 3, the eccentric bearing is distributed between the eccentric shaft and the cycloidal gear. The full pin bearing is used in the eccentric bearing. The main reason is that the cycloidal pin reducer is mainly used for AGV under heavy load, and the bearing capacity is large, so the axial and radial force is large. In order to ensure the service life of the bearing, the full pin bearing is arranged.

[0016] 4, the cross roller bearing has high bearing capacity, can bear large axial and radial load; good rigidity, can ensure that there is no too much deformation and vibration when rotating at high speed; high precision can ensure stable operation; simple structure and convenient installation.

[0017] 5, the cycloidal pin gear has high reduction ratio: single-stage transmission has large reduction ratio and can bear large load; compact structure, adopts planetary transmission principle, the input shaft and the output shaft are on the same axis, so that the size of the machine type is as small as possible; stable operation and low noise, the cycloidal pin gear has more meshing teeth and high coincidence degree, so the noise is low; long service life: the cycloidal pin gear is made of high strength material, which has high durability and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the schematic diagram of the explosion structure of the application;

[0019] Figure 2 It is the schematic diagram of the cross-sectional structure of the application;

[0020] Figure 3 It is the schematic diagram of the eccentric bearing of the application;

[0021] In the drawings, 1 is an eccentric shaft assembly, 2 is a toothed pin assembly, 3 is a cycloidal gear, 4 is an output assembly, 5 is a pin shaft, 6 is a shaft retainer groove, 7 is a bearing end cover, 8 is a steel ring, 9 is a rubber wheel, 10 is an upper bearing, and 11 is a lower bearing;

[0022] 1.1 is an eccentric shaft, and 1.2 is an eccentric bearing;

[0023] 2.1 is a toothed pin shell, and 2.2 is a toothed pin assembly;

[0024] 4.1 is an output flange, and 4.2 is a cross roller bearing. DETAILED DESCRIPTION

[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present application.

[0026] Reference Figure 1 A cycloidal pin reducer for an AGV is shown in the structural schematic diagram of the present application, which comprises an eccentric shaft assembly 1, a pin assembly 2, a cycloidal gear 3 and an output assembly 4 connected in sequence. The eccentric assembly comprises an eccentric shaft and an eccentric bearing, and the pin assembly comprises a pin shell 2.1 and a plurality of pin assemblies 2.2 evenly distributed in the pin shell. The eccentric shaft 1.1 is assembled with the cycloidal gear through the eccentric bearing 1.2, and the cycloidal gear is placed in the pin shell. The torque is input by the eccentric shaft, the eccentric shaft is connected with the output flange 4.1 through the upper bearing set, and the eccentric shaft is axially fixed. The eccentric shaft fixes the cycloidal gear through the eccentric bearing, the pin is fixed on the pin shell, and the cycloidal gear is assembled in the pin shell. The cycloidal pin gear transmission has high gear coincidence degree, high bearing capacity and low noise.

[0027] The output assembly comprises an output flange and a cross roller bearing 4.2. The pin shell and the output flange are fixed through the cross roller bearing, and the pin shaft 5 is fixed on the output flange. The outer ring of the cross roller bearing is fixed on the pin shell, and the inner ring is fixed with the output flange, so that the output flange and the pin shell are fixed together. The bearing end cover 7 is fixed on the pin shell through screws, so that the bearing is axially fixed. Therefore, the cycloidal pin is used on a vehicle body with high bearing capacity, the cross roller bearing is adopted, the axial and radial forces that can be borne are larger, and large axial and radial forces can be borne.

[0028] The cycloidal gear is connected with the output flange through the pin shaft.

[0029] The eccentric shaft is connected with the output flange through the upper bearing set, the top end of the eccentric shaft is provided with an axle retainer groove 6, and an axle retainer is installed on the axle retainer groove. The eccentric shaft is axially fixed. The eccentric shaft is fixed in the axial direction through the axle retainer, so as to prevent the eccentric shaft from moving axially.

[0030] The pin shell is also assembled with a bearing end cover. The bearing end cover is fixed on the pin shell through screws.

[0031] The output flange is assembled with the steel ring 8 through screws, and the rubber wheel 9 is sleeved on the steel ring. The steel ring is fixed on the output flange through screws, and the rubber wheel assembly is fixed on the steel ring through screws. Thus, torque transmission is realized. When the eccentric shaft rotates, the eccentric bearing on the eccentric shaft drives the cycloid wheel to rotate, the cycloid wheel drives the pin shaft to rotate, the pin shaft drives the output flange to rotate, the output flange drives the steel ring, and the steel ring drives the rubber wheel assembly, so as to realize torque transmission.

[0032] The upper end bearing set includes an upper bearing 10 and a lower bearing 11. Double bearings are adopted to increase the contact area of the bearings and the shaft, so that the shaft transmission is more stable.

[0033] The eccentric bearing is a full needle bearing. The full needle bearing has larger bearing capacity, longer service life and lower cost.

Claims

1. A cycloidal pin speed reducer for an AGV trolley, characterized in that, It comprises eccentric shaft assembly, pin assembly, cycloid wheel and output assembly connected in sequence; the eccentric shaft assembly comprises eccentric shaft and eccentric bearing; the pin assembly comprises pin shell and several pin groups evenly distributed in the pin shell; the eccentric shaft is assembled with the cycloid wheel through the eccentric bearing, and the cycloid wheel is placed in the pin shell; the output assembly comprises output flange and cross roller bearing; the pin shell is fixed with the output flange through the cross roller bearing, and the pin shaft is fixed on the output flange; the cycloid wheel is connected with the output flange through the pin shaft; the eccentric shaft is connected with the output flange through the upper end bearing set, the top end of the eccentric shaft is provided with shaft retaining ring groove, and the shaft retaining ring groove is provided with shaft retaining ring.

2. The AGV car uses the cycloid needle speed reducer according to claim 1, characterized in that, The pin shell is further assembled with bearing end cover.

3. The AGV car uses the cycloid needle speed reducer according to claim 1, characterized in that, The output flange is assembled with steel ring through screw, and the steel ring is provided with rubber wheel.

4. The AGV car uses the cycloid needle speed reducer according to claim 1, characterized in that, The upper end bearing set comprises upper bearing and lower bearing.

5. The AGV car uses the cycloid needle speed reducer according to claim 1, characterized in that, The eccentric bearing is full pin bearing.

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