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BR-102024017388-A2 - Gear removal device and gear placement device

BR102024017388A2BR 102024017388 A2BR102024017388 A2BR 102024017388A2BR-102024017388-A2

Abstract

The present invention discloses a gear removal device and a gear placement device. The gear removal device comprises a lower part, an upper part, a recessed free part, and at least one support. The lower part is designed to pass through the gear, rotate clockwise or counterclockwise, and engage with the gear. The upper part is connected to a push/pull mechanism, which may be hydraulic, pneumatic, or mechanical. The gear placement device includes a hole, a connecting hole, and at least one support for positioning the gear.

Inventors

  • PABLO CARDOSO MELO
  • HENRIQUE FERNÃO DIAS DE SOUSA AMARAL
  • ROGERIO GONDIM COSTA
  • BERNARDO MENDES MARTINS COSTA
  • DANIELA MARTINS

Assignees

  • STELLANTIS AUTOMOVEIS BRASIL LTDA

Dates

Publication Date
20260310
Application Date
20240823

Claims (12)

  1. 1. Gear removal device (100) characterized by comprising: a lower part (100a); an upper part (100b); and at least one support (103); wherein, the lower part (100a) of the gear removal device (100) is configured to pass through the gear (201) and turn clockwise and/or counterclockwise engaging with the gear (201); and wherein, the upper part (100b) of the gear extraction device (100) is connected to a push/pull device.
  2. 2. Gear removal device (100), according to claim 1, characterized by having an internal diameter between 57 mm and 59 mm, a height of 91 mm and 94 mm, and a thickness between 2.0 mm and 4 mm.
  3. 3. Gear removal device (100), according to claims 1 and 2, characterized in that the lower part (100a) has the same surface shape as the gear (201) and a height between 4 mm and 5 mm.
  4. 4. Gear removal device (100), according to claim 1, characterized in that the lower part (100a) comprises a free part (100c) having a length between 26 mm and 28 mm.
  5. 5. Gear removal device (100), according to claims 1 and 4, characterized in that the free part (100c) is located within an angled recess between 52 and 63 degrees in the lower part (100a).
  6. 6. Gear removal device (100), according to claim 1, characterized in that the pull/push device connected to the gear removal device (100) is one of hydraulic, pneumatic and mechanical.
  7. 7. Gear removal device (100), according to claim 1, characterized in that the lower part (100a) of the gear removal device (100) has a distance (A) with the gear (201) and the distance (A) is between 0.4 mm and 0.6 mm.
  8. 8. Gear removal device (100), according to any one of claims 1 to 3, characterized in that the material of the gear extraction device (100) is SAE 1045 steel.
  9. 9. Gear-mounting device (102) characterized by comprising: at least one hole (102a); at least one connecting hole (102b); and at least one support (103); wherein, the gear-mounting device (102) is configured to move gear (201); wherein, the gear (201) is placed in its position by means of a pull/push device; and wherein, the gear-mounting device (102) is connected to a pull/push device by means of the connecting hole (102b).
  10. 10. Gear-mounting device (102), according to claim 8, characterized by having a diameter between 39 mm and 41 mm and a height between 49 mm and 51 mm.
  11. 11. Gear-mounting device (102), according to claim 8, characterized in that the hole (102a) has a diameter between 16 mm and 17 mm and a depth between 9 mm and 11 mm.
  12. 12. Gear-mounting device (102), according to claim 8, characterized in that the connecting hole (102b) has a diameter between 11.75 mm and 12.25 mm and a height between 24 mm and 26 mm.

Description

Field of invention [0001] The present invention falls within the area of equipment for testing the mechanical parts of vehicles. [0002] More specifically, the present invention applies to equipment intended for extracting gears from vehicles. State of the art [0003] Gear maintenance is fundamental to ensuring efficient operation and extending the lifespan of machines and equipment. Gears that are not properly maintained can suffer excessive wear, corrosion, or misalignment, which compromises power transmission and can lead to catastrophic system failures. Regular inspection and proper lubrication are essential to prevent problems such as tooth wear and the accumulation of contaminants, which can cause vibrations, abnormal noises, and even gear breakage. Furthermore, preventive maintenance helps identify and correct problems before they cause more significant damage, ensuring the continuous and safe operation of equipment. [0004] However, improper removal of gears during maintenance can introduce new problems, such as damage to the teeth, shaft, or surrounding components. If gears are not removed correctly, using appropriate tools and techniques, the process can cause misalignment or deformation of the parts, negatively affecting system performance. Furthermore, applying excessive force or using inappropriate tools can irreversibly damage the gears, resulting in high repair or replacement costs. [0005] Devices used for installing and removing gears are indispensable in mechanical and industrial applications, as they ensure the precise and safe handling of gears during maintenance, repair, or assembly. Among these tools, the gear puller is one of the most widely used. A gear puller consists of adjustable arms that firmly grip the gear and a central threaded screw that applies force to remove the gear from its shaft. [0006] Although gear pullers are highly effective, they have some disadvantages and potential risks. One of the main concerns is the possibility of misalignment during the extraction process. If the gear puller is not properly aligned with the gear, it can exert uneven force, causing damage to the gear teeth, shaft, or surrounding components. This misalignment can result in deformations that compromise the functionality of the gear or lead to costly repairs. Furthermore, using excessive force with a gear puller, especially on stubborn or corroded gears, can wear down the threads or even break the tool, posing safety risks to the operator. [0007] Another problem with gear pullers is that they are not always suitable for all types of gears or applications. For example, gears that are fitted too tightly or that have additional locking mechanisms may require more specialized equipment or techniques for safe removal. In these cases, forcing the use of a gear puller can lead to ineffective results or, worse, cause irreparable damage to the gear or machine. Furthermore, the physical strength required to operate a manual gear puller can be a limitation, especially in situations where precision is crucial or when working with larger and heavier gears. [0008] Finally, the use of a gear puller can result in safety risks for the operator. The tension accumulated during the extraction process can cause the tool to slip or suddenly detach, potentially causing injury. Furthermore, if the gear puller is not properly maintained, such as ensuring that the arms are not worn and that the central screw is well lubricated, there is an increased risk of tool failure. Objectives of the invention [0009] One objective of the present invention is to provide a device for removing and/or installing a gear. [0010] Furthermore, an objective of the present invention is to mitigate the risk of damaging a gear during the maintenance removal process. Brief description of the invention [0011] The present invention discloses a gear removal device comprising a lower part, an upper part and at least one support. [0012] The lower part of the gear removal device is configured to pass through the gear and turn clockwise and/or counterclockwise, engaging with the gear. [0013] The upper part of the gear extraction device is connected to a push/pull device. [0014] The gear removal device has an inner diameter between 57 mm and 59 mm, a height between 91 mm and 94 mm, and a thickness between 2.0 mm and 4 mm. [0015] The bottom part has the same surface shape as the gear and a height between 4 mm and 5 mm. [0016] The lower part comprising a free part that has a length between 26 mm and 28 mm. [0017] The free part is located within an angled cutout between 52 and 63 degrees on the underside of the gear removal device. [0018] The pull/push device connected to the gear removal device is one of the following: hydraulic, pneumatic, and mechanical. [0019] The bottom of the gear removal device has a distance (A) from the gear and the distance is between 0.4 mm and 0.6 mm. [0020] The material of the gear extraction device is SAE 1045 steel. [0021] The