Planetary shaft mounting tool for planetary reducer

Abstract

The utility model relates to the technical field of transmission of speed reducers, in particular to a mounting tool of a planet shaft for a planetary speed reducer. Comprising a base and a pressing plate, the pressing plate is arranged above the base, a first boss and a base through groove are arranged on the top face of the base, the first boss is fixedly connected to the center of the top face of the base, the base through groove is formed in the periphery of the first boss, a circular groove is formed in the bottom face of the pressing plate, and the position of the circular groove corresponds to the position of the base through groove. Compared with the prior art, four planet shafts can be pressed on a planet carrier together, and the mounting precision can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducer transmission, in particular to an installation tool for a planetary shaft of a planetary speed reducer. Background Art

[0002] With the rapid development of my country's engineering manufacturing industry, planetary gear transmission reducers are widely used in the field of engineering machinery. As an important component for transmitting motion, the installation accuracy of the planetary shaft must be reliable.

[0003] In a planetary gear reducer, the planetary gear transmits motion to the planetary carrier through the meshing ring gear, thereby driving the load to move. The planetary shaft is an important transmission part between the planetary gear and the planetary carrier.

[0004] The motion between the planetary shaft and the planetary gear is usually transmitted through bearings, so the planetary shaft is required to have a hardness high enough to withstand the friction of the bearings. Considering the cost and processing performance, the planetary carrier is usually a steel part with low hardness, so the planetary shaft and the planetary carrier are connected together by an interference fit.

[0005] The prior art discloses a planetary axle installation support tooling and a planetary axle installation device, with publication number CN207736224U, comprising: a base, a positioning structure and a fixing structure; the positioning structure is arranged on the base, and is used for coaxially hinged planetary gears; the fixing structure is detachably arranged on the base, and is used for fixing the planetary axles on the planetary gears. The planetary axle installation support tooling makes the support pins subjected to impact during manual riveting into replaceable parts, thereby reducing the tooling cost. However, if a single press-fitting method is adopted during assembly, the planetary axle is prone to installation tilt and poor position. Therefore, there is an urgent need for a press-fitting tooling that can press-fit four planetary axles onto the planetary carrier together and ensure installation accuracy. Utility Model Content

[0006] In order to solve the above-mentioned technical problem or one of the technical problems existing in the prior art, the utility model discloses an installation tool for a planetary shaft for a planetary reducer, including a base and a pressure plate, the pressure plate is arranged above the base, the top surface of the base is provided with a first boss and a base through groove, the first boss is fixedly connected to the center of the top surface of the base, the base through groove is arranged on the outer periphery of the first boss, and the bottom surface of the pressure plate is provided with a circular groove, and the position of the circular groove corresponds to the position of the base through groove.

[0007] Furthermore, the base is connected to a planet carrier installed between the base and the pressure plate via a first boss, and the first boss is engaged with a groove on the bottom surface of the planet carrier.

[0008] Furthermore, there are four through slots in the base, and the positions of the through slots in the base correspond to the planet shaft mounting slots of the planet carrier.

[0009] Furthermore, the circular groove can be engaged with the second boss on the top surface of the planet carrier.

[0010] Furthermore, a pin is provided on the top surface of the base, and the planet carrier is positioned by the pin.

[0011] Compared with the prior art, the utility model can press-fit four planetary shafts onto the planetary frame together and can ensure the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the installation of the planet carrier and the planet shaft on the base of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the planet carrier and the planet shaft installed in the utility model. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3 The technical solution adopted by the utility model shown is: a mounting tool for a planetary shaft for a planetary reducer, comprising a base 1 and a pressure plate 2, wherein the pressure plate 2 is arranged above the base 1, and the top surface of the base 1 is provided with a first boss 11 and a base through groove 12, wherein the first boss 11 is fixedly connected to the center of the top surface of the base 1, and the planet carrier 4 is fixed on the base 1 through the first boss 11, and the base through groove 12 is arranged on the outer periphery of the first boss 11, and the bottom surface of the pressure plate 2 is provided with a circular groove 21, and the position of the circular groove 21 corresponds to the position of the base through groove 12, and can cooperate with the bottom surface of the planetary shaft 5, thereby preventing the pressure plate 2 from rotating.

[0017] Preferably, the base 1 is connected to the planet carrier 4 installed between the base 1 and the pressure plate 2 via a first boss 11 , and the first boss 11 is engaged with a groove 43 on the bottom surface of the planet carrier 4 .

[0018] Preferably, there are four base through slots 12 , and the base through slots 12 correspond to the positions of the planet shaft mounting slots 42 of the planet carrier 4 .

[0019] Preferably, the circular groove 21 can be engaged with the second boss 41 on the top surface of the planet carrier 4 .

[0020] Preferably, a pin shaft 3 is further provided on the top surface of the base 1, and the planet carrier 4 is positioned by the pin shaft 3, and the planet carrier 4 is prevented from circumferential rotation by the positioning pin.

[0021] The planet carrier is fixed on the base by designing bosses and grooves on the base, and the locating pins are used to prevent the planet carrier from rotating in the circumferential direction. The circular groove is matched with the bottom surface of the planet shaft to prevent the pressure plate from rotating. After the pressure plate and the base are placed in place, the planet shaft is finally pressed into the planet shaft installation groove by a press machine to achieve a one-time press installation. This press installation method can ensure that the verticality of the planet shaft is good after installation.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mounting tool for a planetary shaft for a planetary reducer, characterized in that: The invention comprises a base (1) and a pressure plate (2), wherein the pressure plate (2) is arranged above the base (1), the top surface of the base (1) is provided with a first boss (11) and a base through groove (12), the first boss (11) is fixedly connected to the center of the top surface of the base (1), the base through groove (12) is arranged on the outer periphery of the first boss (11), and the bottom surface of the pressure plate (2) is provided with a circular groove (21), the position of the circular groove (21) corresponds to the position of the base through groove (12).

2. The installation tool for the planetary shaft of a planetary reducer according to claim 1, characterized in that: The base (1) is connected to a planet carrier (4) installed between the base (1) and the pressure plate (2) via a first boss (11), and the first boss (11) is engaged with a groove (43) on the bottom surface of the planet carrier (4).

3. The installation tool for the planetary shaft of a planetary reducer according to claim 1, characterized in that: There are four base through slots (12), and the base through slots (12) correspond in position to the planet shaft mounting slots (42) of the planet carrier.

4. The installation tool for the planetary shaft of a planetary reducer according to claim 1, characterized in that: The circular groove (21) can be engaged with a second boss (41) on the top surface of the planet carrier (4).

5. The installation tool for the planetary shaft of a planetary reducer according to claim 1, characterized in that: A pin shaft (3) is also provided on the top surface of the base (1), and the planet carrier (4) is positioned via the pin shaft (3).

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