Gear dismounting device of high-rotating-speed gear box for oil experiment

Abstract

The utility model provides a gear dismounting device of a high-rotating-speed gear box for an oil product experiment, the gear box comprises a shell and an end cover fixedly connected with the shell, the shell and the end cover are correspondingly provided with gear train assemblies, the gear dismounting device further comprises at least two positioning components, the number of the positioning components is at least two, and the gear train assemblies are arranged on the shell and the end cover. Comprising a positioning pin and a positioning plug, the positioning pin is arranged on the shell, the positioning plug is arranged on the end cover, and the positioning pin is correspondingly inserted into the positioning plug; the support assembly is of a multi-hinge structure, one end of the support assembly is arranged at the top end of the shell, and the other end of the support assembly is fixedly connected with the end cover. According to the gear dismounting device of the high-rotating-speed gear box for the oil product experiment, the situation that a bearing and other parts are abraded due to non-concentricity is effectively solved, time and labor are saved when the gear box is dismounted, and the continuity and economical efficiency of an oil product test bed can be guaranteed.

Description

Technical Field

[0001] This application belongs to the field of gearbox technology, and in particular relates to a gear disassembly device for a high-speed gearbox used in oil testing. Background Technology

[0002] As a widely used energy transmission device in mechanical equipment, the design level of gearboxes reflects, to a certain extent, a country's comprehensive national strength and industrial technology level. With the rapid development of science and technology, higher demands are being placed on the various performance aspects of gearboxes. Gearbox performance directly affects the efficiency and reliability of the entire system, and gearboxes need to operate under high-speed, high-load conditions. Therefore, the performance requirements for lubricating oil are extremely high. Lubricating oil not only needs to provide good lubrication to reduce wear, but also needs to have good cooling properties to prevent overheating. The lubrication condition of the gearbox directly affects the lifespan of the gears and the stability of the entire system.

[0003] In the field of oil testing, gearbox testing mainly focuses on the impact of lubricating oil on gears and the evaluation of lubricating oil performance. The viscosity, density, and quantity of lubricating oil directly affect the gearbox's churning loss, frictional power loss, and cooling effect. Chasing loss is a significant component of the gearbox's total power loss, accounting for approximately 30%. Therefore, researching and optimizing the gearbox lubrication system to reduce churning loss is crucial for improving gearbox efficiency and reducing energy consumption.

[0004] Currently, high-speed gearboxes used for oil testing suffer from the drawback of inconvenient gear disassembly. This is because the gearbox design may not have considered the need for frequent disassembly, leading to a complex and time-consuming disassembly process. This design deficiency increases the difficulty of maintenance and inspection, especially when quick gear replacement or troubleshooting is required. Furthermore, after gear disassembly, misalignment between the gearbox housing and the gear shaft can occur. This misalignment may be due to manufacturing tolerances, wear, or assembly errors in the gearbox structure during disassembly. Misalignment leads to unstable gearbox operation, increased vibration and noise, bearing wear, and reduced gearbox lifespan and efficiency. Therefore, ensuring concentricity between the gearbox housing and gear shaft requires addressing the issue of securing the disassembled gearbox housing. The gearbox housing typically requires precise fixation to ensure operational stability and accurate positional coordinates. However, existing fixtures are not suitable for all types of gearbox housings, or may damage the housing during fixation, especially with thin-walled housings, and may cause positional shifts. This not only affects the gearbox's sealing performance but may also lead to lubricant leakage, further impacting the accuracy of oil testing and gearbox performance. Due to the aforementioned issues, frequent disassembly and replacement of gears can lead to misalignment, causing wear and damage to the gearbox, which incurs additional costs. This is detrimental to the continuity and economy of oil testing. Utility Model Content

[0005] In view of this, this application aims to propose a gear disassembly device for a high-speed gearbox used in oil testing, in order to solve the problems of inconvenience in opening and disassembling gears when using high-speed gearboxes for oil testing, which leads to a complicated and time-consuming gear disassembly process, and difficulty in accurately fixing the gearbox housing during disassembly, resulting in the gearbox housing and gear shaft not being able to be concentric, unstable gearbox operation, increased vibration and noise, bearing wear, and thus reduced gearbox service life and efficiency.

[0006] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0007] This application provides a gear disassembly device for a high-speed gearbox used in oil testing. The gearbox includes a housing and an end cover fixedly connected to the housing. Gear assemblies are correspondingly mounted on the housing and the end cover. The device also includes:

[0008] The positioning components are at least two in number, including a positioning pin and a positioning plug. The positioning pin is disposed on the housing, and the positioning plug is disposed on the end cover. The positioning pin is correspondingly inserted into the positioning plug.

[0009] The bracket assembly is a multi-hinge structure, with one end located at the top of the housing and the other end fixedly connected to the end cap.

[0010] Furthermore, the gear assembly includes a high-speed gear shaft system and a low-speed gear shaft system meshing with the high-speed gear shaft system. The input shaft of the high-speed gear shaft system is connected to a drive motor, and the output shaft of the low-speed gear shaft system is connected to a loading motor.

[0011] Furthermore, the housing has a through stepped hole, the positioning pin is correspondingly disposed in the stepped hole, and a gasket is disposed on the side away from the end cap, and the positioning pin is fixedly connected to the gasket by screws.

[0012] The end of the positioning pin is tapered.

[0013] Furthermore, the end cap has a through hole corresponding to the stepped hole, and an insert is provided at the through hole. The positioning seal includes a cover, which is a semi-closed structure with an opening on one side and an internal accommodating cavity. The cover is fixedly connected to the insert, and a spring is installed inside the cover. The spring is limited to the accommodating cavity by a plug. The positioning pin extends into the cover to press the plug and the spring.

[0014] The cover also has a limiting structure for restricting the movement of the plug.

[0015] Furthermore, the inner wall of the cover is provided with an annular groove, and an elastic retaining ring is correspondingly installed in the annular groove.

[0016] Furthermore, the bracket assembly includes a first connecting arm, a second connecting arm, and a third connecting arm that are hinged together. One end of the first connecting arm is disposed at the top of the housing via a rotating shaft, and the first connecting arm rotates around the rotating shaft. The third connecting arm is fixedly connected to the outer wall of the end cap by screws.

[0017] Furthermore, a base is provided at the bottom of the housing, and the base is fixedly connected to an external device by fastening screws.

[0018] Compared with the prior art, the gear disassembly device for a high-speed gearbox used in oil testing described in this application has the following advantages:

[0019] The gear disassembly device for a high-speed gearbox used in oil testing described in this application can effectively solve the problem of wear on bearings and other parts caused by misalignment by using positioning components and bracket assemblies installed on the gearbox. Furthermore, disassembling the gearbox is time-saving and labor-saving, ensuring the continuity and economy of the oil testing bench. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the first angle structure of a gear disassembly device for a high-speed gearbox used in oil testing, as described in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the second angle structure of a gear disassembly device for a high-speed gearbox used in oil testing, as described in an embodiment of this application.

[0023] Figure 3 These are sectional views of the low-speed stage gear shaft system and the high-speed stage gear shaft system described in the embodiments of this application;

[0024] Figure 4 This is a cross-sectional view of the positioning component described in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the support assembly structure described in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Housing; 2-End cover; 3-Low-speed stage gear shaft; 4-High-speed stage gear shaft; 5-Positioning component; 51-Positioning pin; 52-Gasket; 53-Sealing cover; 54-Installation piece; 55-Spring; 56-Plug; 57-Elastic retaining ring; 6-Bracket assembly; 61-First connecting arm; 62-Second connecting arm; 63-Third connecting arm; 64-Rotating shaft; 7-Base. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can refer to any connection.

[0030] This includes electrical connections, whether direct or indirect. Terms like "up," "down," "left," and "right" are used only to indicate relative positional relationships; these relative relationships may change if the absolute position of the object being described changes.

[0031] Please see 1 and Figure 2 As shown, this embodiment provides a gear disassembly device for a high-speed gearbox used in oil testing. The gearbox includes a housing 1 and an end cover 2 fixedly connected to the housing 1. Gear assemblies are correspondingly mounted on the housing 1 and the end cover 2. The device also includes:

[0032] Positioning component 5, the number of positioning components 5 is at least two, including positioning pin 51 and positioning plug, positioning pin 51 is disposed on housing 1, positioning plug is disposed on end cover 2, positioning pin 51 is inserted into positioning plug accordingly;

[0033] The bracket assembly 6 has a multi-hinge structure, with one end set at the top of the housing 1 and the other end fixedly connected to the end cover 2.

[0034] Specifically, in this embodiment, the positioning pins 51 are arranged at the upper left and upper right of the housing 1 for positioning between the housing 1 and the end cover 2. The bracket assembly 6 is located at the upper right of the housing 1, with one end connected to the housing 1 and the other end connected to the detachable end cover 2 of the housing 1. The bracket assembly 6 is a multi-hinge structure, which is formed by three connecting arms connected by three rotating shafts 64. Each rotating shaft 64 can rotate 360 ​​degrees, with high rotational freedom, and can realize multi-directional movement.

[0035] The gear disassembly device for a high-speed gearbox used in oil testing described in this embodiment uses a bracket assembly 6 on the housing 1 to ensure precise fixation when the housing is opened during gear disassembly. When the end cover 2 is reinstalled, the positioning pin 51 ensures that the gearbox housing and the gear shaft remain concentric, avoiding wear on the gearbox bearings, housing, and other components, thereby ensuring the continuity and economy of oil testing.

[0036] In some embodiments, the gear assembly includes a high-speed gear shaft system 4 and a low-speed gear shaft system 3 meshing with the high-speed gear shaft system 4. The input shaft end of the high-speed gear shaft system 4 is connected to a drive motor, and the output shaft of the low-speed gear shaft system 3 is connected to a loading motor.

[0037] The housing 1 and the end cover 2 are fitted together to form a housing base for mounting the gear system. The bottom end of the housing 1 is provided with a base, which is fixedly connected to the external equipment by fastening screws.

[0038] Specifically, in this embodiment, such as Figure 3As shown, the gear assembly consists of a low-speed stage gear shaft system 3 and a high-speed stage gear shaft system 4. The low-speed stage gear shaft system 3 is specifically constructed as follows: from the output end of the low-speed shaft, a lock nut, a four-point contact bearing, a spacer sleeve, a distance sleeve, a cylindrical bearing, a lip seal, a low-speed shaft seal seat, an input gear, a lock nut, a cylindrical bearing, a low-speed shaft end cover, and a low-speed shaft seal cover are fitted together. The high-speed stage gear shaft system 4 is specifically constructed as follows: from the input end of the high-speed shaft, a flange, a lock nut, a high-speed shaft seal ring, an angular contact bearing, a spacer sleeve, a distance sleeve, an angular contact bearing (two angular contact bearings are mounted back-to-back), a high-speed shaft seal seat, a high-speed shaft, a spacer sleeve, a lock nut, a cylindrical bearing, a lock nut, and a high-speed shaft seal cover are fitted together. Additionally, oil pipes and lubrication pipes are embedded inside the gearbox housing.

[0039] The working principle is as follows: a drive motor is connected from one side of the input shaft of the gearbox to drive the high-speed shaft and the input gear to rotate, thereby driving the output gear and the low-speed shaft. A loading motor is connected from the output end of the low-speed shaft. During the rotation of the gears, lubricating oil is sprayed onto the two gears through a lubrication nozzle for testing.

[0040] It should be noted that the low-speed gear shaft system 3 and the high-speed gear shaft system 4 used in this embodiment are common gear system structures in the art. This application has not made any improvements to them, and the structural composition of each gear system will not be described in detail here.

[0041] In some embodiments, a through stepped hole is provided on the housing 1, the positioning pin 51 is correspondingly disposed in the stepped hole, and a gasket 52 is provided on the side away from the end cover 2, and the positioning pin 51 and the gasket 52 are fixedly connected by screws, and the end of the positioning pin 51 is provided with a tapered structure.

[0042] The end cap 2 has a through hole corresponding to the stepped hole, and an insert 54 is provided at the through hole. The positioning and sealing includes a cap 53. The cap 53 is a semi-closed structure with an opening on one side and an internal accommodating cavity. The cap 53 is fixedly connected to the insert 54. A spring 55 is installed inside the cap 53. The spring 55 is limited to the accommodating cavity by a plug 56. The positioning pin 51 extends into the cap 53 to press the plug 56 and the spring 55.

[0043] The inner wall of the cover 53 is provided with an annular groove, and an elastic retaining ring 57 is installed in the annular groove. The elastic retaining ring 57 is used to limit the amount of movement of the plug 56 in the cover 53.

[0044] Specifically, in this embodiment, such as Figure 4As shown, the locating pin 51 is installed in the stepped hole of the housing 1 by screws and washers 52. A locating plug corresponding to the locating pin 51 is provided on the end cover 2. The locating plug is composed of a cover 53, a spring 55, a plug 56 and an elastic retaining ring 57. During assembly, the locating pin 51 extends into the cover 53 and contacts the plug 56, thereby squeezing the plug 56 and the spring 55. The purpose of the spring 55 is to buffer the soft contact and avoid the locating pin 51 from making hard contact with the locating plug, thereby improving the compatibility of the housing and the gear assembly.

[0045] In some embodiments, the bracket assembly 6 includes a first connecting arm 61, a second connecting arm 62 and a third connecting arm 63 that are hinged together. One end of the first connecting arm 61 is disposed at the top of the housing 1 via a rotating shaft 64 and rotates around the rotating shaft 64. The third connecting arm 63 is fixedly connected to the outer wall of the end cover 2 by screws.

[0046] Specifically, in this embodiment, such as Figure 5 As shown, the bracket assembly 6 consists of three interconnected connecting arms. Each connecting arm is connected by a rotating shaft 64, and each rotating shaft 64 can rotate 360 ​​degrees, providing a high degree of rotational freedom. One end of the first connecting arm 61 is set at the top of the housing 1 via the rotating shaft 64, and the third connecting arm 63 is fixedly connected to the end cover 2 by screws. When disassembling and assembling the gearbox housing, the separation and assembly of the housing 1 and the end cover 2 can be achieved by controlling the rotation of the bracket assembly 6.

[0047] The bracket assembly 6 used in this embodiment has high degrees of freedom and can move in multiple directions. It can effectively avoid interference between the housing and the gear when disassembling and assembling the gear. While ensuring the relative height of the housing 1, it is easy for the housing 1 to remain concentric with the shaft after installation.

[0048] Example 1

[0049] After the test, the gearbox needs to be opened to disassemble the gears, analyze the lubrication of the gear surfaces, and replace the gears. At this point, the locating pin 51 must be removed first, and then the outer casing of the gearbox opened. The bracket assembly 6 can then fix the disassembled outer casing to ensure that the gearbox outer casing and gear shaft are concentric when the cover is closed. (In simpler terms, this gearbox consists of a housing 1 and an end cover 2, assembled from two parts. When installing the housing 1 and end cover 2, the locating pin 51 is used to determine the installation position, ensuring a tight fit between the housing 1 and end cover 2. This also ensures that the housing can be properly assembled with the input and output shafts.) Alignment is ensured; furthermore, both the bracket assembly 6 and the locating pin 51 serve to ensure more precise positioning when the housing 1 and end cover 2 are aligned during installation. During disassembly, the locating pin 51 is removed first, and the end cover 2 is rotated to a position that does not interfere with operation via the multi-hinge structure of the bracket assembly 6. Simultaneously, the bracket assembly 6 also fixes the relative height of the housing 1, ensuring that the end cover 2 remains concentric with the shaft. This effectively solves the problem of bearing and other component wear caused by misalignment, and the disassembly of the gearbox is time-saving and labor-saving, ensuring the continuity and economy of the oil testing bench.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0051] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A gear disassembly device for a high-speed gearbox used in oil testing, the gearbox comprising a housing (1) and an end cover (2) fixedly connected to the housing (1), wherein gear assemblies are correspondingly mounted on the housing (1) and the end cover (2), characterized in that, Also includes: Positioning component (5), the number of positioning components (5) is at least two, including positioning pin (51) and positioning plug, the positioning pin (51) is disposed on the housing (1), the positioning plug is disposed on the end cover (2), and the positioning pin (51) is correspondingly inserted into the positioning plug; The bracket assembly (6) has a multi-hinge structure, with one end located at the top of the housing (1) and the other end fixedly connected to the end cap (2).

2. The apparatus according to claim 1, characterized in that: The gear assembly includes a high-speed gear shaft system (4) and a low-speed gear shaft system (3) meshing with the high-speed gear shaft system (4). The input shaft of the high-speed gear shaft system (4) is connected to a drive motor, and the output shaft of the low-speed gear shaft system (3) is connected to a loading motor.

3. The apparatus according to claim 1, characterized in that: The housing (1) has a through stepped hole, the positioning pin (51) is correspondingly disposed in the stepped hole, and a gasket (52) is disposed on the side away from the end cap (2), and the positioning pin (51) and the gasket (52) are fixedly connected by screws. The end of the positioning pin (51) is tapered.

4. The apparatus according to claim 3, characterized in that: The end cap (2) has a through hole corresponding to the stepped hole, and an insert (54) is provided at the through hole. The positioning seal includes a cover (53). The cover (53) is a semi-closed structure with an opening on one side and a housing cavity inside. The cover (53) is fixedly connected to the insert (54). A spring (55) is installed inside the cover (53). The spring (55) is limited to the housing cavity by a plug (56). The positioning pin (51) extends into the cover (53) to press the plug (56) and the spring (55). The cover (53) is also provided with a limiting structure for restricting the movement of the plug (56).

5. The apparatus according to claim 4, characterized in that: The inner wall of the cover (53) is provided with an annular groove, and an elastic retaining ring (57) is installed in the annular groove.

6. The apparatus according to claim 1, characterized in that: The bracket assembly (6) includes a first connecting arm (61), a second connecting arm (62), and a third connecting arm (63) that are hinged together. One end of the first connecting arm (61) is disposed at the top of the housing (1) via a rotating shaft (64), and the first connecting arm (61) rotates around the rotating shaft (64). The third connecting arm (63) is fixedly connected to the outer wall of the end cap (2) by screws.

7. The apparatus according to claim 1, characterized in that: The bottom end of the housing (1) is provided with a base (7), which is fixedly connected to the external equipment by fastening screws.

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