Planetary gearbox test bed with output pinion

Abstract

The utility model provides a planetary gear box test bench with an output pinion. The planetary gear box test bench mainly comprises a workbench, a test bench rack, a transition flange, an idle wheel, an idle wheel shaft, an idle wheel bearing, an active test gear box, a passive test gear box and a test motor. By electrifying and loading the test motor, the test motor is driven to drive a planetary mechanism in the active test gear box to operate and transmit motion and power to the shaft end of the output pinion of the active test gear box, and the output pinion of the active test gear box, the idle gear and the output pinion of the passive test gear box are meshed to move. The motion and power are transmitted to a planetary mechanism in the passive test gear box, and then a loading test motor connected with the passive test gear box is driven to work, so that the same-direction rotation of an input end and an output end is finally realized, the purpose of testing gear boxes of different specifications on the same test bench is achieved, the cost is saved, and the universality is improved. The test bench is of a closed hard tooth surface gear meshing structure, so that tooth surface abrasion is reduced, and the running safety of the test bench is improved.

Description

Technical Field

[0001] The utility model relates to the technical fields of wind power generation and construction machinery, and more specifically, to a gearbox test bench. Background Art

[0002] When conducting a commutation loading test on a planetary gearbox with an output pinion, two gearboxes of the same specification need to be horizontally or vertically installed on the test bench, and the test is carried out by means of meshing the output pinions with each other. Since parameters such as the number of teeth, module, tooth width, and modification coefficient of the output pinions are different, for gearboxes of different specifications, they need to be installed on their respective corresponding test benches. The number of test benches is large, the versatility is poor, and it is inconvenient to manage.

[0003] The existing gearbox test bench is an open test structure with output pinions meshing with each other. A gearbox of one specification can only correspond to one test bench, and the input and output rotation directions are opposite. If the forward and reverse loading times are inconsistent, the number of meshing times of the left and right tooth surfaces of the two test gearboxes is different. For the open meshing structure, the wear degree of meshing between teeth increases, the lubrication effect is not good, and the safety is weaker than that of the closed type. Therefore, a closed planetary gearbox test bench is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve problems such as inconsistent input and output rotation directions during the test stage, relatively weak safety compared to the closed type, and poor versatility.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A planetary gearbox test bench with an output pinion mainly includes a workbench, a test bench frame, a transition flange, an idler gear, an idler shaft, an idler bearing, an active test gearbox, a passive test gearbox, and a test motor.

[0007] Furthermore, the workbench supports the test bench frame and is welded by multiple I-beams in three layers in a criss-cross manner. A T-nut installation groove is arranged on the first layer, and an oil sump can be placed inside the second layer.

[0008] Furthermore, the test bench frame is composed of a test bench base and a cover plate. A PMMA plastic transparent window is arranged on the base to facilitate observing the meshing and lubrication conditions between gears, and installation holes for connecting to the workbench and the cover plate are arranged. The height of the base should be greater than the tooth width of the gearbox output pinion.

[0009] Furthermore, the cover plate is provided with a PMMA plastic transparent window, a transition flange installation hole, and an idler shaft installation hole. The transition flange installation hole on the cover plate should be larger than the size of the gearbox output interface.

[0010] Further, the transition flange is provided with two types of mounting holes, which are respectively connected to the test bench and the main and passive test gearboxes. An eccentricity is provided between the mounting holes, so that the mounting center distance meets the requirements of the gear meshing center distance.

[0011] Further, the idler gear is provided with an inner hole for installing the idler gear bearing and the idler gear shaft. The idler gear has a hard gear tooth surface and should be subjected to tooth profile and tooth direction modification.

[0012] Further, the idler gear shaft is provided with a grease injection hole and a lifting hole.

[0013] Beneficial effects: The present utility model provides a planetary gearbox test bench with an output pinion, which relates to the technical fields of wind power generation and construction machinery, and is used for performing a loading test on a gearbox. It mainly includes a workbench, a test bench frame, a transition flange, an idler gear, an idler gear shaft, an idler gear bearing, an active test gearbox, a passive test gearbox, and a test motor. An oil sump is arranged inside the workbench to prevent lubricating oil from leaking to the ground during the gearbox test or disassembly and assembly process. The test bench frame is composed of a test bench base and a cover plate. PMMA plastic transparent windows are arranged on the base and the cover plate to facilitate observing the meshing and lubrication conditions between the gears. By energizing and loading the test motor, the test motor is driven to transmit motion and power to the output end of the active test gearbox, and then the idler gear is driven to rotate through the meshing between the gears, and then the passive test gearbox is driven to rotate, and finally the loading test motor connected to the passive test gearbox is driven to work, realizing the same-direction rotation of the input and output ends, achieving the purpose of being able to test gearboxes of different specifications on the same test bench, saving costs and improving versatility. Since the test bench has a closed hard tooth surface gear meshing structure, it reduces tooth surface wear and improves the safety of the test bench operation: Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is the front view of a planetary gearbox test bench with an output pinion

[0016] Figure 2 It is the top view of a planetary gearbox test bench with an output pinion

[0017] Figure 3 It is the structural diagram of the transition flange

[0018] Figure 4It is a transmission schematic diagram of a planetary gearbox test bench with an output pinion Specific implementation mode

[0019] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0020] As Figures 1-4 shown, Figure 1 It is the front view of a planetary gearbox test bench with an output pinion provided by the present utility model; Figure 2 It is the top view of a planetary gearbox test bench with an output pinion provided by the present utility model; Figure 3 It is Figure 1 and Figure 2 The structure diagram of the transition flange of the planetary gearbox test bench in; Figure 4 It is the transmission schematic diagram of a planetary gearbox test bench with an output pinion provided by the present utility model.

[0021] Referring to Figure 1 and Figure 2 , a planetary gearbox test bench with an output pinion mainly includes a workbench 1, a test bench frame, a transition flange 15, an idle gear 17, an idle gear shaft 19, an idle gear bearing 18, a driving test gearbox 20, a driven test gearbox 16, a driving test motor 21 and a loading test motor 24.

[0022] Further, referring to Figure 1 and Figure 2 , the workbench 1 supports the test bench frame and is welded by multiple I-beams in three layers. A T-nut installation groove is arranged on the first layer, and the test bench frame is fixed on the workbench 1 through bolts 26, gaskets 27 and T-nuts 28. An oil sump 25 can be placed inside the second layer to collect lubricating oil and grease leaked during the test or disassembly of the gearbox, prevent the ground from being slippery and improve the ground cleanliness.

[0023] Further, referring to Figure 1 and Figure 2 , the test bench frame is composed of a test bench base 6 and a cover plate 7. A PMMA plastic transparent window is arranged on the base 6 to facilitate observing the meshing and lubrication conditions between gears. Installation holes for connecting with the workbench 1 and the cover plate 7 are arranged thereon, and it is connected with the workbench 1 and the cover plate 7 respectively through bolts 26, gaskets 27, T-nuts 28, bolts 8 and gaskets 9.

[0024] Further, referring toFigure 1 The cover plate 7 is provided with a PMMA plastic transparent window and mounting holes, and is connected to the base 6 through bolts 8 and gaskets 9, and is connected to the transition flange 15 through bolts 12 and gaskets 13.

[0025] Further, referring to Figure 1 and Figure 3 The transition flange 15 is provided with two types of mounting holes, which are respectively connected to the test bench, the active test gearbox 20 and the passive test gearbox 16. An eccentricity is set between the mounting holes so that the mounting center distance meets the requirements of the gear meshing center distance. Since the parameters such as the number of teeth, module, modification coefficient, and tooth width of the output pinions 29 and 30 of the planetary gearboxes of different specifications are different, for different specifications of gearboxes, the installation and use requirements can be met by setting the eccentricity of the transition flange. By only replacing the transition flange, the purpose of conducting a loading test on different specifications of gearboxes on the same test bench can be achieved, improving the versatility and reducing the cost.

[0026] Further, referring to Figure 1 The active test gearbox 20 is provided with mounting holes, which are respectively connected to the transition flange 15 and the driving test motor 21. The passive test gearbox 16 is provided with mounting holes, which are respectively connected to the transition flange 15 and the loading test motor 24. By rotating the output flange of the gearbox, the backlash between the output pinions 29 and 30 and the idler gear 17 can be adjusted until the set requirements are met.

[0027] Further, referring to Figure 1 The driving test motor 21 and the loading test motor 24 are respectively connected to the active and passive test gearboxes 20 and 16 through stop positioning and bolts 22 and gaskets 23.

[0028] Further, referring to Figure 1 The idler gear 17 is provided with an inner hole for installing the idler bearing 18 and the idler shaft 19. The idler gear 17 has a hard gear tooth surface, and tooth profile and tooth direction modification should be carried out to improve the service life of the idler gear. The tooth width of the idler gear should be less than the tooth width of the output pinion of the gearbox.

[0029] Further, referring to Figure 1 The idler shaft 19 is provided with a grease injection hole and a lifting hole. By injecting grease into the grease injection hole of the idler shaft 19, the grease can enter the idler bearing 18 and the meshing part between the output pinions 29 and 30 of the gearbox and the idler gear 17 along the hole channel, and a manual grease injection function is provided.

[0030] Transmission principle: Referring to Figure 4, by energizing and loading the test motor, driving the test motor 21 will drive the planetary mechanism inside the active test gearbox 20 to operate and transmit motion and power to the output pinion end of the active test gearbox 20. Through the meshing motion between the output pinion 29 of the active test gearbox 20, the idler gear 17, and the output pinion 30 of the passive test gearbox 16, the planetary mechanism inside the passive test gearbox 16 is then driven to rotate. Finally, the loading test motor 24 connected to the passive test gearbox 16 is driven to work, achieving co-rotational of the input and output ends.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gearbox test bench with an output pinion, characterized in that: The invention mainly comprises a workbench (1), a test bench, a transition flange (15), an idler wheel (17), an idler wheel shaft (19), an idler wheel bearing (18), an active test gear box (20), a passive test gear box (16), a drive test motor (21) and a load test motor (24).

2. A planetary gearbox test bench with an output pinion according to claim 1, characterized in that: The workbench (1) supports the test bench and is formed by welding a plurality of I-beams in three layers in a crisscross pattern. The first layer is provided with a T-nut mounting groove, and the second layer can be provided with an oil collecting tank (25).

3. A planetary gearbox test bench with an output pinion according to claim 2, characterized in that: The test bench frame is composed of a test bench base (6) and a cover plate (7); The base (6) is provided with a PMMA plastic transparent window and a mounting hole connected to the workbench (1) and the cover plate (7); the height of the base (6) should be greater than the tooth width of the output pinion (29) of the gear box; The cover plate (7) is provided with a PMMA plastic transparent window, a transition flange (15) mounting hole and an idler shaft (19) mounting hole. The transition flange (15) mounting hole on the cover plate (7) should be larger than the size of the gearbox output interface.

4. A planetary gearbox test bench with an output pinion according to claim 3, characterized in that: The transition flange (15) is provided with two types of mounting holes, which are respectively connected to a test bench, an active test gearbox (20) or a passive test gearbox (16), and an eccentricity is provided between the mounting holes so that the mounting center distance meets the gear meshing center distance requirement.

5. A planetary gearbox test bench with an output pinion according to claim 1, characterized in that: The idler wheel (17) is provided with an inner hole for mounting an idler wheel bearing (18) and an idler wheel shaft (19). The idler wheel (17) is a hard gear tooth surface and tooth profile modification should be performed.

6. A planetary gearbox test bench with an output pinion according to claim 5, characterized in that: The idler shaft (19) is provided with a grease injection hole and a hoisting hole.

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