A high performance single stage transmission gearbox

Abstract

The utility model discloses a kind of high-performance single-stage transmission gearboxes, it is related to gear box field, including gear box and the high-speed shaft being set to gear box inside, the outside wall of gear box is equipped with heat sink by bolt fixation;The side of gear box is equipped with oil inlet pipeline, and the one end of oil inlet pipeline is fixedly provided with oil inlet flange, and the pipe wall of oil inlet pipeline is fixedly provided with multiple branch pipes, and the one end of multiple branch pipes is fixedly provided with pipe joint, and the top of gear box is fixedly provided with multiple lubricating passages, and lubricating passage is communicated with the oil tank of each part in gear box needing lubrication.The utility model improves heat dissipation efficiency by heat sink and external circulation lubrication design, reduces heat accumulation;Adopt high-speed bearing configuration and conical surface sealing structure, solve bearing failure and oil leakage problem under high speed;Gear modification reduces noise, welding joint inner baffle prevents air-permeable cap oil leakage, and can be modified using existing casting box, save cost.

Description

Technical Field

[0001] This utility model relates to the field of gearboxes, specifically to a high-performance single-stage transmission gearbox. Background Technology

[0002] Industrial gearboxes are widely used, but for applications requiring high speed and low torque output, traditional single-stage gearboxes are small in size, have poor heat dissipation, and often use cast housings, making structural modifications difficult and unable to meet the requirements. Therefore, a high-performance single-stage reducer is urgently needed in the market.

[0003] Defects and shortcomings:

[0004] 1. Single-stage gearboxes have high speed and small size, resulting in poor heat dissipation. In addition, the gearbox interior serves as an oil tank, leading to significant oil churning losses. This exacerbates heat accumulation inside the reducer, causing excessively high temperatures and shortening the reducer's service life.

[0005] 2. Oil seals are not suitable for high-speed applications and are prone to wear and failure. The reference speed of the paired single-row tapered bearings commonly used in high-speed shaft bearings also does not meet the user's requirements.

[0006] To address this, a high-performance single-stage transmission gearbox is proposed. Utility Model Content

[0007] In view of the problems existing in the above-mentioned transmission gearboxes, this utility model is proposed.

[0008] Therefore, the purpose of this utility model is to provide a high-performance single-stage transmission gearbox, which solves the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A high-performance single-stage transmission gearbox includes a gearbox and a high-speed shaft disposed inside the gearbox, wherein a heat dissipation plate is fixed to the outer wall of the gearbox by bolts;

[0011] The gearbox is provided with an oil inlet pipe on one side, and an oil inlet flange is fixedly provided at one end of the oil inlet pipe. Multiple branch pipes are fixedly provided on the pipe wall of the oil inlet pipe, and a pipe joint is fixedly provided at one end of each of the multiple branch pipes. Multiple lubrication channels are fixedly provided on the top of the gearbox, and the lubrication channels are connected to the oil grooves of the parts that need to be lubricated inside the gearbox. The branch pipes are fixedly connected to the lubrication channels through pipe joints. An oil return pipe is fixedly provided on the bottom side wall of the gearbox by bolts.

[0012] One end of the high-speed shaft is equipped with a cylindrical bearing, and the other end of the high-speed shaft is equipped with a cylindrical roller bearing and a four-point contact ball bearing. Adjusting rings are provided between the cylindrical bearing and the inner wall of the gearbox, and between the cylindrical roller bearing and the four-point contact ball bearing. An oil slinger ring is provided on one side of the four-point contact ball bearing. An oil collection cover is fixedly connected to the outer wall of the gearbox on the outside of the oil slinger ring. The oil collection cover has two oil return chambers inside. The first oil return chamber has a conical structure and a first oil return channel at the bottom. The conical structure of the first oil return chamber and the conical structure on the oil slinger ring are parallel to each other. A second oil return channel is provided at the bottom of the second oil return chamber. An oil return hole is opened between the first oil return channel and the second oil return channel and the side wall of the gearbox.

[0013] Preferably, the heat sink has a plurality of heat sink fins arranged in a ring on its side.

[0014] Preferably, the adjusting ring has an oil groove, and the oil groove is connected to the lubrication channel.

[0015] Preferably, a welded joint is fixedly provided on the side wall of the gearbox, and a vent cap is fixedly provided at the end of the welded joint away from the gearbox. Two staggered baffles are welded inside the welded joint.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0017] 1. This utility model increases the heat dissipation area and effectively improves the heat dissipation effect by setting heat dissipation plates and heat dissipation fins on the outer wall of the gearbox. At the same time, it adopts an external circulation lubrication method. After lubricating the parts through the oil inlet pipe, branch pipe and lubrication channel, the lubricating oil flows back to the oil supply system through the oil return pipe, avoiding the oil churning loss caused by the gearbox being used as an oil tank and reducing heat accumulation.

[0018] 2. This utility model utilizes a combination of cylindrical bearings, cylindrical roller bearings, and four-point contact ball bearings on a high-speed shaft. The cylindrical bearings and cylindrical roller bearings bear radial loads, while the four-point contact ball bearings bear axial loads. These two types of bearings have higher reference speeds, meeting the requirements of high-speed applications. Furthermore, the oil groove on the adjusting ring is connected to the lubrication channel, ensuring good lubrication of the bearings. The conical structure of the oil slinger ring and the oil collection cover creates a vacuum during high-speed rotation, which, combined with two oil return channels, effectively prevents lubricating oil leakage and solves the problem of easy wear and failure of oil seals at high speeds.

[0019] 3. This utility model makes the modified structure more precise by performing modification calculations on the gears, thereby reducing the noise of the gearbox during operation; two staggered baffles are set inside the welded joint between the gearbox and the vent cap to prevent oil leakage at the vent cap. In addition, the gearbox can be modified from the existing casting housing without the need for re-molding or welding the housing, thus saving costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the heat sink and heat fins of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0024] Figure 4 This is a partial structural schematic diagram of the high-speed shaft end seal of this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of the oil return hole of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal structure of the welded joint of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Gearbox; 2. Radiator plate; 3. Radiator fins; 4. Oil inlet pipe; 5. Oil inlet flange; 6. Branch pipes; 7. Pipe fittings; 8. Lubrication channels; 9. Oil return pipes; 10. High-speed shaft; 11. Cylindrical bearing; 12. Cylindrical roller bearing; 13. Four-point contact ball bearing; 14. Adjusting ring; 15. Oil slinger ring; 16. Oil collection cover; 17. First oil return channel; 18. Second oil return channel; 19. Oil return hole; 20. Vent cap; 21. Welded joint; 22. Baffle plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] This utility model provides, for example Figures 1-6 The high-performance single-stage transmission gearbox shown includes a gearbox 1 and a high-speed shaft 10 disposed inside the gearbox 1. A heat sink 2 is fixed to the outer wall of the gearbox 1 by bolts. A plurality of heat sinks 3 arranged in a ring are fixed to the side of the heat sink 2. The heat sinks 3 can increase the heat dissipation area and effectively dissipate the heat inside the gearbox 1.

[0031] A gearbox 1 has an oil inlet pipe 4 on one side, with an oil inlet flange 5 fixedly attached to one end. Multiple branch pipes 6 are fixedly attached to the wall of the oil inlet pipe 4, and each branch pipe 6 has a pipe connector 7 fixedly attached to one end. Multiple lubrication channels 8 are fixedly attached to the top of the gearbox 1, and the lubrication channels 8 are connected to the oil grooves of the parts that need to be lubricated inside the gearbox 1. The branch pipes 6 and the lubrication channels 8 are fixedly connected by pipe connectors 6. A return oil pipe 9 is fixedly attached to the bottom side wall of the gearbox 1 by bolts. The external oil supply system is connected to the oil inlet pipe 4 through the oil inlet flange 5. The lubricating oil is diverted from the oil inlet pipe 4 to the branch pipes 6, and then enters the lubrication channel 8 at the top of the gearbox 1 through the pipe connector 7. The lubrication channel 8 is connected to the oil grooves of the parts that need to be lubricated inside the gearbox 1, thereby achieving lubrication of the internal parts. The lubricated oil flows back to the oil supply system from the return oil pipe 9 on the bottom side wall of the gearbox 1, forming an external circulation lubrication.

[0032] One end of the high-speed shaft 10 is provided with a cylindrical bearing 11, and the other end of the high-speed shaft 10 is provided with a cylindrical roller bearing 12 and a four-point contact ball bearing 13. Adjusting rings 14 are provided between the cylindrical bearing 11 and the inner wall of the gearbox 1, and between the cylindrical roller bearing 12 and the four-point contact ball bearing 13. The adjusting rings 14 have oil grooves that are connected to the lubrication channel 8. One side of the four-point contact ball bearing 13 is provided with an oil slinger ring 15. The outside of the oil slinger ring 15 is provided with an oil collection cover 16 that is fixedly connected to the outer wall of the gearbox 1. The inside of the oil collection cover 16 is provided with two oil return chambers. The first oil return chamber has a conical structure and a first oil return channel 17 at the bottom. The conical surface of the first oil return chamber and the conical structure on the oil slinger ring 15 are parallel to each other. The bottom of the second oil return chamber is provided with a second oil return channel 18. An oil return hole 19 is provided between the first oil return channel 17 and the second oil return channel 18 and the side wall of the gearbox 1.

[0033] A welding joint 21 is fixedly provided on the side wall of the gearbox 1. A vent cap 20 is fixedly provided at the end of the welding joint 21 away from the gearbox 1. Two baffles 22 with staggered positions are welded inside the welding joint 21. The baffles 22 can prevent the lubricating oil inside the welding joint 21 from escaping through the vent cap 20.

[0034] In summary: the principles of heat dissipation and lubrication

[0035] Heat dissipation principle: The heat dissipation plate 2 is fixed to the outer wall of the gearbox 1 by bolts. The heat dissipation fins 3 arranged in a ring on the side of the heat dissipation plate 2 can increase the heat dissipation area and effectively dissipate the heat inside the gearbox 1.

[0036] Lubrication principle: The external oil supply system is connected to the oil inlet pipe 4 through the oil inlet flange 5. The lubricating oil is diverted from the oil inlet pipe 4 to the branch pipe 6, and then enters the lubrication channel 8 at the top of the gearbox 1 through the pipe joint 7. The lubrication channel 8 is connected to the oil grooves of the parts that need to be lubricated inside the gearbox 1, so as to achieve lubrication of the internal parts. The lubricated oil flows back to the oil supply system from the return oil pipe 9 on the bottom side wall of the gearbox 1, forming an external circulation lubrication, avoiding the oil churning loss caused by the gearbox 1 being used as an oil tank, and reducing heat accumulation.

[0037] Bearing and Seal Working Principle

[0038] Bearing working principle: One end of the high-speed shaft 10 is equipped with a cylindrical bearing 11, and the other end is equipped with a cylindrical roller bearing 12 and a four-point contact ball bearing 13. The cylindrical bearing 11 and the cylindrical roller bearing 12 bear radial loads, and the four-point contact ball bearing 13 bears axial loads. The reference speed of these two types of bearings is 1.5-3 times that of the same specification tapered bearing, which can meet the high speed requirements. The adjusting ring 14 has an oil groove that communicates with the lubrication channel 8, which can lubricate the bearing.

[0039] Sealing working principle: The oil slinger ring 15 on the high-speed shaft 10 has a conical structure at the front and a serrated ring at the rear. The external oil collection cover 16 has two oil return chambers inside. The first oil return chamber has a conical structure and a first oil return channel 17 at the bottom. Its conical surface is parallel to the conical surface of the oil slinger ring 15 and is 1 mm away. When rotating at high speed, a vacuum is formed between the two, which draws the lubricating oil into the gearbox and prevents the lubricating oil from entering the second oil return chamber. The bottom of the second oil return chamber has a second oil return channel 18. Most of the lubricating oil returns to the gearbox 1 from the first oil return channel 17. A small part of the lubricating oil that enters the second oil return chamber returns to the gearbox 1 from the second oil return channel 18 through the oil return hole 19 and then flows away through the oil return pipe 9, thus achieving a seal to prevent oil leakage.

[0040] The principle of noise reduction and preventing oil leakage from the breathable cap

[0041] Noise reduction principle: The gearbox 1 operating conditions are imported into the KISSSFOT software to perform modification calculations, modify the gear shape, and reduce gearbox noise.

[0042] The principle of preventing oil leakage from the vent cap: The welded joint 21 between the gearbox 1 and the vent cap 20 has two staggered baffles 22 inside, which can prevent oil from leaking from the vent cap 20.

[0043] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-performance single-stage transmission gearbox, comprising a gearbox (1) and a high-speed shaft (10) disposed inside the gearbox (1), characterized in that: The outer wall of the gearbox (1) is fixed with a heat sink (2) by bolts. The gearbox (1) has an oil inlet pipe (4) on one side, an oil inlet flange (5) fixedly installed at one end of the oil inlet pipe (4), multiple branch pipes (6) fixedly installed on the pipe wall of the oil inlet pipe (4), and a pipe joint (7) fixedly installed at one end of each branch pipe (6). Multiple lubrication channels (8) are fixedly installed on the top of the gearbox (1), and the lubrication channels (8) are connected to the oil grooves of each part that needs to be lubricated in the gearbox (1). The branch pipes (6) are fixedly connected to the lubrication channels (8) through the pipe joint (7). The bottom side wall of the gearbox (1) is fixedly provided with an oil return pipe (9) by bolts. One end of the high-speed shaft (10) is provided with a cylindrical bearing (11), and the other end of the high-speed shaft (10) is provided with a cylindrical roller bearing (12) and a four-point contact ball bearing (13). Adjusting rings (14) are provided between the cylindrical bearing (11) and the inner wall of the gearbox (1) and between the cylindrical roller bearing (12) and the four-point contact ball bearing (13). An oil slinger ring (15) is provided on one side of the four-point contact ball bearing (13), and the outside of the oil slinger ring (15) is provided with a tooth-like ring. The oil collection cover (16) is fixedly connected to the outer wall of the gearbox (1). The oil collection cover (16) has two oil return chambers inside. The first oil return chamber has a conical structure and a first oil return channel (17) at the bottom. The conical surface of the first oil return chamber and the conical structure on the oil slinger ring (15) are parallel to each other. The bottom of the second oil return chamber has a second oil return channel (18). An oil return hole (19) is opened between the first oil return channel (17) and the second oil return channel (18) and the side wall of the gearbox (1).

2. The high-performance single-stage transmission gearbox according to claim 1, characterized in that: The heat sink (2) has multiple heat sinks (3) arranged in a ring on its side.

3. The high-performance single-stage transmission gearbox according to claim 1, characterized in that: The adjusting ring (14) has an oil groove, and the oil groove is connected to the lubrication channel (8).

4. The high-performance single-stage transmission gearbox according to claim 1, characterized in that: The gearbox (1) is fixedly provided with a welding joint (21) on its side wall. A vent cap (20) is fixedly provided at the end of the welding joint (21) away from the gearbox (1). Two baffles (22) with staggered positions are welded inside the welding joint (21).

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