A multi-stage transmission gear box that is easy to maintain

Abstract

The utility model relates to transmission equipment technical field especially relates to a multistage transmission gear box convenient to maintain. Including gear box and gear box cover, be equipped with input shaft, intermediate shaft and output shaft in gear box, be equipped with input gear on input shaft, be equipped with first intermediate gear and second intermediate gear on intermediate shaft, be equipped with output gear on output shaft, input gear and first intermediate gear mesh, output gear and second intermediate gear mesh, constitute multistage transmission, be equipped with observation window for observing internal operation state, oil inlet for adding lubricating oil and oil level for monitoring oil level on gear box, and observation window, oil inlet and oil level are sealed respectively through detachable window cover plate, oil inlet cover plate and oil level cover plate, each shaft is supported on gear box through self -aligning roller bearing, and is limited in the axial position through axial baffle. The utility model solves the problem of the existing gear box inconvenient maintenance, poor sealing performance etc.

Description

Technical Field

[0001] This utility model relates to the field of transmission equipment technology, and in particular to a multi-stage transmission gearbox that is easy to maintain. Background Technology

[0002] Gearboxes, as key components in mechanical transmission systems, are widely used in various types of mechanical equipment to change speed, direction of rotation, and transmit torque. Multi-stage gearboxes, through the combination of multiple gear pairs, can achieve large transmission ratios and high transmission efficiency.

[0003] However, existing gearboxes still suffer from the following problems: First, maintenance is inconvenient. Most gearboxes have a compact structure, making it difficult to inspect and replace internal components, and lack effective observation and maintenance channels. Second, sealing performance is insufficient, especially at the junction of the shaft and the gearbox housing, where lubricating oil leakage is prone to occur. These problems severely restrict the service life and operational reliability of gearboxes, necessitating a multi-stage transmission gearbox that is easy to maintain to solve these technical issues. Utility Model Content

[0004] The purpose of this invention is to solve the problems of inconvenient maintenance and poor sealing performance of existing gearboxes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] According to one aspect of this utility model, a multi-stage transmission gearbox that is easy to maintain is provided, including a gearbox body and a gearbox cover. The gearbox body is provided with an input shaft, an intermediate shaft, and an output shaft. An input gear is provided on the input shaft, a first intermediate gear and a second intermediate gear are fitted on the intermediate shaft, and an output gear is provided on the output shaft. The input gear meshes with the first intermediate gear, and the output gear meshes with the second intermediate gear, forming a multi-stage transmission. The gearbox body is provided with an observation window for observing the internal operating status, an oil inlet for adding lubricating oil, and an oil level port for monitoring the oil level. The observation window, oil inlet, and oil level port are respectively sealed by a detachable window cover, an oil inlet cover, and an oil level port cover. Each shaft is supported on the gearbox body by self-aligning roller bearings and is axially limited by axial baffles.

[0007] Optionally, the window cover is fitted with glass made of transparent material, and the window cover is fastened to the gearbox cover by fasteners.

[0008] Optionally, the oil level port is located on the side wall of the gearbox body, and its position corresponds to the oil level line when the gearbox is running normally.

[0009] Optionally, the self-aligning roller bearing includes a first self-aligning roller bearing mounted on the input shaft, a second self-aligning roller bearing mounted on the intermediate shaft, and a third self-aligning roller bearing mounted on the output shaft.

[0010] Optionally, the axial baffle includes an output shaft baffle disposed at the end of the output shaft and an intermediate shaft baffle disposed at the end of the intermediate shaft.

[0011] Optionally, the ends of the input shaft, intermediate shaft, and output shaft extend beyond the gearbox bearing housing and are respectively provided with an input shaft cover plate, an intermediate shaft cover plate, and an output shaft cover plate.

[0012] Optionally, a skeleton sealing ring is provided at the dynamic seal between the shaft and the cover plate.

[0013] Optionally, the gearbox cover and the gearbox body are fastened together by a plurality of double-ended studs and hexagonal nuts arranged circumferentially.

[0014] Optionally, the observation window and window cover are disposed on the gearbox cover at a position corresponding to the meshing area of ​​the input shaft and the first intermediate gear, for direct observation of the meshing and running status of the high-speed gear.

[0015] The advantages of this utility model are:

[0016] 1. By setting an observation window and a window cover on the gearbox cover, and embedding transparent glass on the window cover, operators can directly observe the internal operating status of the gearbox, especially the meshing and operation of the high-speed gears. Routine inspections can be carried out without disassembling the gearbox, which greatly improves the convenience of maintenance.

[0017] 2. By setting an oil level port and an oil level port cover on the side wall of the gearbox, with the position corresponding to the oil level line during normal operation, it is convenient for operators to check the lubricating oil level at any time, add or replace lubricating oil in a timely manner, ensure the normal lubrication of the gearbox, and extend the service life of the equipment.

[0018] 3. Self-aligning roller bearings are used to support each shaft, and axial baffles are used for axial positioning, which improves the stability of bearing stress, makes gear meshing more precise, reduces operating noise, and extends bearing service life.

[0019] Compared with the prior art, the multi-stage transmission gearbox provided by this utility model has a reasonable structural design, is easy to maintain and operate, has reliable sealing performance, and is stable in operation, effectively solving the technical problems existing in the current gearbox. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the multi-stage transmission gearbox described in this utility model;

[0022] Figure 2 This is a side view of the multi-stage transmission gearbox described in this utility model;

[0023] Figure 3 This utility model Figure 2 Sectional view along the AA direction.

[0024] In the diagram: 1. Gearbox housing; 2. Gearbox cover; 3. Input shaft; 4. Intermediate shaft; 5. Output shaft; 6. Input gear; 7. First intermediate gear; 8. Second intermediate gear; 9. Output gear; 10. Window cover plate; 11. Oil inlet cover plate; 12. Oil level port cover plate; 13. Self-aligning roller bearing; 14. Input shaft cover plate; 15. Intermediate shaft cover plate; 16. Output shaft cover plate; 17. Skeleton seal ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1-3 As shown, a multi-stage transmission gearbox that is easy to maintain includes a gearbox body 1 and a gearbox cover 2. The gearbox body 1 houses an input shaft 3, an intermediate shaft 4, and an output shaft 5. An input gear 6 is mounted on the input shaft 3, a first intermediate gear 7 and a second intermediate gear 8 are mounted on the intermediate shaft 4, and an output gear 9 is mounted on the output shaft 5. The input gear 6 meshes with the first intermediate gear 7, and the output gear 9 meshes with the second intermediate gear 8, forming a multi-stage transmission structure.

[0028] The gearbox housing 1 is equipped with an observation window, an oil inlet, and an oil level port. The observation window is used to observe the internal operating status, the oil inlet is used to add lubricating oil, and the oil level port is used to monitor the oil level. The observation window, oil inlet, and oil level port are sealed by removable window cover 10, oil inlet cover 11, and oil level port cover 12, respectively. The window cover 10 is fitted with glass made of transparent material and is fastened to the gearbox cover 2. The observation window and window cover 10 are positioned on the gearbox cover 2 corresponding to the meshing area of ​​the input shaft 3 and the first intermediate gear 7, allowing direct observation of the meshing and operating status of the high-speed gears. This design enables operators to visually monitor the gear operation, promptly identify potential problems, and prevent equipment damage.

[0029] The oil level port is located on the side wall of gearbox body 1, corresponding to the oil level line during normal gearbox operation. This design allows maintenance personnel to easily check whether the lubricating oil level is within the normal range, ensuring that the gearbox's lubrication conditions meet operating requirements and extending the equipment's service life.

[0030] All shafts within the gearbox are supported on the gearbox body 1 by self-aligning roller bearings 13 and are axially limited by axial baffles. The self-aligning roller bearings 13 include a first self-aligning roller bearing mounted on the input shaft 3, a second self-aligning roller bearing mounted on the intermediate shaft 4, and a third self-aligning roller bearing mounted on the output shaft 5. The self-aligning roller bearings 13 have an automatic self-aligning function, capable of accommodating minor shaft deviations and bearing housing misalignment, thereby improving the gearbox's operational stability and service life.

[0031] The axial baffle includes an output shaft baffle located at the end of the output shaft 5 and an intermediate shaft baffle located at the end of the intermediate shaft 4. The axial baffle effectively restricts the axial movement of the shaft, ensures gear meshing accuracy, reduces gear meshing noise, and improves transmission efficiency.

[0032] The ends of the input shaft 3, intermediate shaft 4, and output shaft 5 extend beyond the bearing seats of the gearbox housing 1, and are respectively equipped with an input shaft cover plate 14, an intermediate shaft cover plate 15, and an output shaft cover plate 16. A skeleton seal ring 17 is provided at the dynamic seal between the shaft and the cover plate. The skeleton seal ring 17 effectively prevents lubricating oil leakage and the ingress of external impurities, maintaining a good lubrication environment inside the gearbox and extending the service life of the equipment.

[0033] The gearbox cover 2 is securely connected to the gearbox body 1 by multiple double-ended studs and hexagonal nuts arranged circumferentially. This connection method ensures a reliable seal between the gearbox cover 2 and the gearbox body 1, while also facilitating disassembly and maintenance. When it is necessary to inspect or repair the internal parts of the gearbox, simply remove the hexagonal nuts and double-ended studs to open the gearbox cover 2 for convenient and quick maintenance.

[0034] During the operation of the gearbox, power is transmitted from the input shaft 3, through the input gear 6 to the first intermediate gear 7 on the intermediate shaft 4, and then through the second intermediate gear 8 on the intermediate shaft 4 to the output gear 9 on the output shaft 5, finally outputting power from the output shaft 5. This multi-stage transmission structure can achieve a large transmission ratio to meet the needs of different working conditions.

[0035] Through the observation window, operators can directly observe the meshing and operating status of the high-speed gears and promptly detect any abnormalities. Lubricating oil can be easily added or replaced through the oil inlet, and the oil level port allows for easy checking of the oil level. These design features simplify and facilitate routine maintenance of the gearbox, significantly reducing maintenance costs and time.

[0036] The use of self-aligning roller bearings 13 improves the adaptability and stability of the gearbox, the setting of axial baffles ensures transmission accuracy, and the application of skeleton seal rings 17 solves the sealing problem. These technical features together constitute a multi-stage transmission gearbox that is easy to maintain and reliable in operation.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-stage transmission gearbox that is easy to maintain, comprising a gearbox body and a gearbox cover, characterized in that: The gearbox housing includes an input shaft, an intermediate shaft, and an output shaft. An input gear is mounted on the input shaft, a first intermediate gear and a second intermediate gear are mounted on the intermediate shaft, and an output gear is mounted on the output shaft. The input gear meshes with the first intermediate gear, and the output gear meshes with the second intermediate gear, forming a multi-stage transmission. The gearbox housing has an observation window for observing the internal operating status, an oil inlet for adding lubricating oil, and an oil level port for monitoring the oil level. The observation window, oil inlet, and oil level port are sealed by removable window covers, oil inlet covers, and oil level port covers, respectively. Each shaft is supported on the gearbox housing by self-aligning roller bearings and is axially limited by axial baffles.

2. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The window cover is fitted with glass made of transparent material, and the window cover is fastened to the gearbox cover by fasteners.

3. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The oil level port is located on the side wall of the gearbox body, and its position corresponds to the oil level line when the gearbox is running normally.

4. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The self-aligning roller bearing includes a first self-aligning roller bearing mounted on the input shaft, a second self-aligning roller bearing mounted on the intermediate shaft, and a third self-aligning roller bearing mounted on the output shaft.

5. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The axial baffle includes an output shaft baffle disposed at the end of the output shaft and an intermediate shaft baffle disposed at the end of the intermediate shaft.

6. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The ends of the input shaft, intermediate shaft, and output shaft extend out of the gearbox bearing housing and are respectively provided with an input shaft cover plate, an intermediate shaft cover plate, and an output shaft cover plate.

7. The easy-to-maintain multi-stage transmission gearbox according to claim 6, characterized in that, A skeleton sealing ring is provided at the dynamic seal between the shaft and the cover plate.

8. The easy-to-maintain multi-stage transmission gearbox according to claim 1, characterized in that, The gearbox cover and gearbox body are fastened together by a plurality of double-ended studs and hexagonal nuts arranged circumferentially.

9. The easy-to-maintain multi-stage transmission gearbox according to claim 2, characterized in that, The observation window and window cover are located on the gearbox cover at a position corresponding to the meshing area of ​​the input shaft and the first intermediate gear, for direct observation of the meshing and running status of the high-speed gear.

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