Planetary gear assembly tool

Abstract

The utility model discloses a planetary wheel assembly tool, it includes stator, bottom surface is recessed to stator inside, rotor is set up in stator inside, gear frame is installed in stator lower surface, and the top end is embedded with stator inside convex part, shaft sleeve is set up in gear frame lower surface, top rod is set up in the inside of shaft sleeve, and its top end is in the inside of gear frame, sealing ring is set up in top rod side surface. Through above -mentioned structure, set up top rod in the inside of shaft sleeve, and make its top end stretch out gear frame, make the top rod drop in the process when installing rotor, sealing ring moves in the empty groove, force the air in empty groove to slowly discharge through the tiny air hole on the shaft sleeve, form damping effect, produce the buffer action similar to air spring, effectively prevent rotor and stator from colliding and damaging, and the problem that the traditional air spring can eject sun gear is avoided ingeniously.

Description

Technical Field

[0001] This utility model relates to the field of planetary gear assembly technology, and in particular to planetary gear assembly tooling. Background Technology

[0002] In traditional planetary gear assembly, operators typically rely on manual adjustment or simple positioning fixtures to align the rotor and stator, which has significant limitations: the lack of effective guiding and buffering structures makes it easy for the rotor to tilt due to uneven force during the pressing of the sun gear, which can scratch the inner wall of the stator and affect assembly accuracy and product yield; although some existing fixtures attempt to use spring buffer elements to prevent collisions, they are often difficult to control the rebound force, posing a risk of pushing the installed sun gear out in the opposite direction. At the same time, they also lack integrated disassembly functions, resulting in low maintenance and replacement efficiency. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a planetary gear assembly fixture that can ensure the installation centering through the precise fit between the gear carrier and the stator, fundamentally preventing the rotor from tilting and scratching the inner wall of the stator. At the same time, the push rod and the air hole structure form a controllable pneumatic buffer, which effectively avoids rigid collision damage between the rotor and the stator. Moreover, this damping buffer mechanism overcomes the defect of traditional spring elements that easily eject the workpiece, and integrates an integrated ejection and disassembly function, which significantly improves the reliability, protection and convenience of the assembly operation.

[0004] This utility model also provides a planetary gear assembly fixture, including: a stator with its bottom surface recessed into the interior of the stator;

[0005] The rotor is located inside the stator;

[0006] The gear carrier is mounted on the lower surface of the stator, and its top end fits into a protruding part inside the stator.

[0007] A bushing is provided on the lower surface of the gear carrier;

[0008] The push rod is located inside the bushing, with its top end inside the gear carrier;

[0009] A sealing ring is provided on the side surface of the push rod.

[0010] This utility model also has the following technical features:

[0011] In one embodiment of the present invention, a limiting ring is fixedly connected to the lower surface of the rotor, the lower surface of the limiting ring is in contact with the upper surface of the stator, and the rotor has four slots arranged in an array inside the rotor.

[0012] In one embodiment of the present invention, a sun gear and planet gears are provided inside the gear carrier. The sun gear and planet gears are fitted into the inner sidewall of the gear carrier. The side surface of the sun gear is meshed with the side surface of the planet gears. There are three planet gears arranged in an array on the side surface of the sun gear.

[0013] In one embodiment of this utility model, the top of the sun gear is disposed on the lower surface of the rotor.

[0014] In one embodiment of the present invention, the bushing has a hollow groove inside and air holes are formed on the side surface of the bushing. The air holes are numerous and arranged in an array on the side surface of the bushing. The air holes are connected to the inside of the hollow groove and are located at the bottom end of the bushing.

[0015] In one embodiment of this utility model, a handle is provided at the bottom end of the top rod, and the upper surface of the top rod is in contact with the lower surface of the sun gear.

[0016] In one embodiment of this utility model, the inner wall of the sealing ring is fixedly connected to the side surface of the top rod, and the side surface of the sealing ring is in contact with the inner wall of the slot.

[0017] In one embodiment of this utility model, the upper surface of the bushing is in contact with the lower surfaces of the sun gear and the planet gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By cooperating with the gear carrier and the stator, the rotor can be prevented from tilting during the installation of the sun gear and planetary gears, thus preventing scratches on the inner wall of the stator. By setting a push rod inside the bushing with its top extending out of the gear carrier, the bottom of the sun gear can abut against the push rod when the rotor is installed. During the descent of the push rod, the sealing ring on its side surface moves in the slot, forcing the air in the slot to slowly escape through the tiny air holes on the bushing, forming a damping effect and producing a buffering effect similar to an air spring. This effectively prevents the rotor from colliding and being damaged by the stator. At the same time, it cleverly avoids the problem that traditional air springs may pop out the sun gear. When needed, the push rod can be directly pushed to push out the sun gear, making the operation simple. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is an overall structural diagram of the planetary gear assembly tooling of this utility model;

[0022] Figure 2 This is a structural diagram showing the connection relationship of the gear carrier in the planetary gear assembly fixture of this utility model;

[0023] Figure 3 This is a side sectional view of the planetary gear assembly fixture of this utility model;

[0024] Figure 4 The tooling for assembling the planetary gears of this utility model Figure 3 Structural diagram at point A in the middle.

[0025] Legend:

[0026] 1. Stator;

[0027] 2. Rotor; 21. Limiting ring; 22. Hole / slot;

[0028] 3. Gear carrier; 31. Sun gear; 32. Planet gears;

[0029] 4. Bushing; 41. Groove; 42. Air hole;

[0030] 5. Top rod;

[0031] 6. Sealing ring. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0033] It should be noted that the core defects of existing planetary gear assembly fixtures are: the rotor tilting during assembly can easily scratch the stator, rigid collisions can easily damage the workpiece, and traditional buffer mechanisms can easily eject the sun gear. To address these issues, a planetary gear assembly fixture is proposed, comprising: a stator 1 with its bottom surface recessed into the stator 1; a rotor 2 located inside the stator 1; a gear carrier 3 mounted on the lower surface of the stator 1, with its top end fitting into a protruding part inside the stator 1; a bushing 4 located on the lower surface of the gear carrier 3; a push rod 5 located inside the bushing 4, with its top end located inside the gear carrier 3; and a sealing ring 6 located on the side surface of the push rod 5.

[0034] In one embodiment, see Figure 1 and 3 A limiting ring 21 is fixedly connected to the lower surface of the rotor 2. The lower surface of the limiting ring 21 is in contact with the upper surface of the stator 1. The rotor 2 has four slots 22 arranged in an array inside the rotor 2.

[0035] Specifically, the rotor 2 and the limiting ring 21 can be embedded inside the stator 1 to prevent the rotor 2 from tilting during rotation, and the slot 22 makes it easy for the operator to rotate the rotor 2.

[0036] In one embodiment, see Figure 2 and Figure 3The gear carrier 3 is equipped with a sun gear 31 and a planet gear 32. The sun gear 31 and the planet gear 32 are fitted into the inner side wall of the gear carrier 3. The side surface of the sun gear 31 is meshed with the side surface of the planet gear 32. There are three planet gears 32, which are distributed in an array on the side surface of the sun gear 31.

[0037] Specifically, this allows the gear carrier 3 to restrict the sun gear 31 and planet gear 32, facilitating the quick assembly of the sun gear 31 and planet gear 32 by the operators.

[0038] In one embodiment, see Figure 3 The top of the sun gear 31 is located on the lower surface of the rotor 2.

[0039] Specifically, it facilitates the assembly and rotation of the sun gear 31 via the rotor 2.

[0040] In one embodiment, see Figure 4 The bushing 4 has a hollow groove 41 inside and a vent 42 on the side surface of the bushing 4. There are several vents 42 and they are arranged in an array on the side surface of the bushing 4. The vents 42 are connected to the inside of the hollow groove 41 and are located at the bottom end of the bushing 4.

[0041] Specifically, the slot 41 is designed to allow the sealing ring 6 to rise and fall normally, so that the air below the sealing ring 6 can only be discharged through the air hole 42. Since the air hole 42 is relatively small, the air cannot be discharged quickly, which can form a buffering effect similar to an air spring.

[0042] In one embodiment, see Figure 3 A handle is provided at the bottom of the push rod 5, and the upper surface of the push rod 5 is in contact with the lower surface of the sun gear 31.

[0043] Specifically, it facilitates the operation of staff to control the raising and lowering of the push rod 5, thereby restricting and pushing out the sun gear 31 through the push rod 5.

[0044] In one embodiment, see Figure 4 The inner wall of the sealing ring 6 is fixedly connected to the side surface of the top rod 5, and the side surface of the sealing ring 6 is in contact with the inner wall of the empty groove 41.

[0045] Specifically, this ensures that the air below the sealing ring 6 can only be discharged through the vent 42.

[0046] In one embodiment, see Figure 3 The upper surface of the bushing 4 is in contact with the lower surfaces of the sun gear 31 and the planet gear 32.

[0047] Specifically, it facilitates the rapid assembly of the sun gear 31 and planet gear 32.

[0048] Working principle: During the use of the tooling, the gear carrier 3 cooperates with the stator 1 to ensure that the rotor 2 will not tilt when installing the sun gear 31 and planet gear 32, thus preventing scratches on the inner wall of the stator 1. By setting a push rod 5 inside the bushing 4 and extending its top end out of the gear carrier 3, the bottom end of the sun gear 31 can abut against the push rod 5 when the rotor 2 is installed. During the descent of the push rod 5, the sealing ring 6 on its side surface moves in the slot 41, forcing the air in the slot 41 to slowly escape through the small air holes 42 on the bushing 4, forming a damping effect and producing a buffering effect similar to an air spring. This effectively prevents the rotor 2 from colliding and being damaged by the stator 1, while cleverly avoiding the problem of the sun gear 31 being ejected by a traditional air spring. When needed, the push rod 5 can be pushed directly to eject the sun gear 31, making the operation simple.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A planetary gear assembly fixture, characterized in that, include: The stator (1) has its bottom surface recessed into the interior of the stator (1); The rotor (2) is disposed inside the stator (1); The gear carrier (3) is installed on the lower surface of the stator (1), and its top end is fitted into the protruding part inside the stator (1); A bushing (4) is provided on the lower surface of the gear carrier (3); The push rod (5) is located inside the bushing (4), and its top end is located inside the gear carrier (3); A sealing ring (6) is provided on the side surface of the top rod (5).

2. The planetary gear assembly fixture according to claim 1, characterized in that, A limiting ring (21) is fixedly connected to the lower surface of the rotor (2). The lower surface of the limiting ring (21) is in contact with the upper surface of the stator (1). The rotor (2) has four slots (22) arranged in an array inside the rotor (2).

3. The planetary gear assembly fixture according to claim 1, characterized in that, The gear carrier (3) is provided with a sun gear (31) and a planet gear (32) inside. The sun gear (31) and the planet gear (32) are fitted into the inner side wall of the gear carrier (3). The side surface of the sun gear (31) is meshed with the side surface of the planet gear (32). There are three planet gears (32) arranged in an array on the side surface of the sun gear (31).

4. The planetary gear assembly fixture according to claim 3, characterized in that, The top of the sun gear (31) is located on the lower surface of the rotor (2).

5. The planetary gear assembly fixture according to claim 1, characterized in that, The bushing (4) has a hollow groove (41) inside and a vent (42) on its side surface. The vent (42) has several holes and is arranged in an array on the side surface of the bushing (4). The vent (42) is connected to the inside of the hollow groove (41). The vent (42) is located at the bottom of the bushing (4). The vent (42) is small in size, which can reduce the air discharge speed inside the hollow groove (41).

6. The planetary gear assembly fixture according to claim 1, characterized in that, The top rod (5) is provided with a handle at its bottom end, and the upper surface of the top rod (5) is in contact with the lower surface of the sun gear (31).

7. The planetary gear assembly fixture according to claim 1, characterized in that, The inner wall of the sealing ring (6) is fixedly connected to the side surface of the top rod (5), and the side surface of the sealing ring (6) is in contact with the inner wall of the slot (41).

8. The planetary gear assembly fixture according to claim 1, characterized in that, The upper surface of the bushing (4) is in contact with the lower surfaces of the sun gear (31) and the planet gear (32).

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