Gearbox for vehicle testing

Abstract

This utility model provides a speed reducer for automotive testing, belonging to the technical field of speed reducer technology. It includes a speed reducer housing, a drive motor, a heat dissipation structure, and a debris removal component. The drive motor is bolted to one side of the speed reducer housing, and a controller is mounted on the same side. The heat dissipation structure is located on both sides of the speed reducer housing, and the debris removal component is located on the other side. In this utility model, a circulating oil pump pumps lubricating oil into a heat exchange block, while multiple heat sinks dissipate heat from the lubricating oil to the outside. The cooled lubricating oil flows back into the speed reducer housing through a return oil pipe, thus achieving the circulating heat dissipation function of this device. This allows the lubricating oil to continuously remove internal heat, reducing thermal wear on gears and bearings to a certain extent, extending the service life of components, ensuring the stability of power transmission, ensuring stable speed and torque parameters during testing, and improving the accuracy of automotive testing data.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a speed reducer used for automotive testing. Background Technology

[0002] In the process of vehicle testing, in order to simulate the needs of different driving conditions, a vehicle testing speed reducer is set up. By adjusting the speed and torque, the performance of the engine, transmission system and other components can be tested, providing reliable power simulation support for vehicle performance evaluation and fault diagnosis, and ensuring the accuracy and validity of the test data.

[0003] A Chinese patent with publication number CN205479148U discloses a dedicated reducer for automotive testing lines, comprising a housing, a rectangular spline, and a motor. One side of the housing is bolted to the motor. One end of the motor has a bearing housing mounting position, and the other end has a motor shaft gear. Inside the housing are a fourth gear, a third gear, a second gear, and an output shaft. The motor shaft gear meshes with the third gear, which has a key that engages with the fourth gear. The fourth gear meshes with the second gear. This utility model's design not only saves installation space in the testing line but also makes the internal layout more rational. The fourth gear, third gear, motor shaft gear, and second gear undergo high-precision gear grinding, increasing the working efficiency to over 95%. The bearing housing mounting position prevents reducer sagging, greatly improving the stability and accuracy of vehicle testing data.

[0004] The aforementioned patent still has the following shortcomings: Due to the high-speed operation of the gear set inside the housing, a large amount of heat is generated. Relying solely on the natural heat dissipation of the housing leads to the accumulation of heat inside, causing excessive temperature rise in the gears and bearings, affecting transmission accuracy and component lifespan. At the same time, the heat generated by the motor operating under high load for a long time is superimposed on the heat from the gearbox, further exacerbating the problem of insufficient heat dissipation. Under continuous testing conditions, overheating can easily cause equipment instability, indirectly reducing the reliability of testing data. Utility Model Content

[0005] This invention provides a speed reducer for automotive testing, thereby solving the problems mentioned in the background section.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] An embodiment of this utility model provides a speed reducer for automotive testing, comprising:

[0008] Gearbox housing;

[0009] A drive motor is mounted on one side of the reducer housing, a controller is mounted on one side of the drive motor, and a first gear is mounted on the output shaft of the drive motor;

[0010] The second gear meshes with the first gear and is rotatably connected inside the reducer housing via a first shaft. A third gear is fixedly mounted on one side of the first shaft of the second gear.

[0011] The fourth gear meshes with the third gear and is rotatably connected inside the reducer housing via the second shaft. The fourth gear rotates synchronously with the second shaft. One end of the second shaft extends out of the reducer housing, and a connecting keyway is provided at one end of the second shaft.

[0012] The oil filler cap is threaded to the top of the reducer housing, and a bottom cover is installed at the bottom of the reducer housing;

[0013] A heat dissipation structure is provided on the outer wall of the reducer housing. The heat dissipation structure includes a circulating oil pump and a heat exchange block. The circulating oil pump is fixed on one side of the reducer housing, and its output end is connected to the heat exchange block. Its input end is connected to the impurity removal component through a connecting pipe. The output end of the heat exchange block is connected to the inside of the reducer housing through a return oil pipe.

[0014] The impurity removal component is located outside the reducer housing. Its input end is connected to the bottom of the reducer housing through an oil suction pipe, and its output end is connected to a circulating oil pump through the connecting pipe. The impurity removal component is used to filter lubricating oil.

[0015] The above technical solution involves a drive motor that rotates the first gear, which in turn drives the second gear to rotate synchronously. The second gear then drives the third gear, which in turn drives the fourth gear. The fourth gear connects to the detection components of an external application device via a keyway, thereby outputting power. This solution ensures power transmission through the meshing of the second and first gears, while the meshing of the fourth gear with the reducer housing guarantees a complete transmission path, resulting in continuous and stable power transmission and improving torque and speed regulation accuracy to some extent.

[0016] Furthermore, the middle part of the second shaft is fixedly connected to the fourth gear, and the second shaft is rotatably connected to the reducer housing on both sides of the fourth gear through bearings. The end of the second shaft away from the drive motor extends out of the reducer housing, and a connecting frame is fixed to the outer wall of the end of the second shaft extending out of the reducer housing. The connecting frame is provided for positioning and mounting of external application equipment.

[0017] Furthermore, an oil guide circuit is provided inside the heat exchange block, multiple heat dissipation fins are fixed on one side of the heat exchange block, and the oil outlet at the top of the heat exchange block is connected to the oil return pipe.

[0018] The above technical solution pumps lubricating oil into the heat exchange block via a circulating oil pump. At the same time, multiple heat sinks dissipate the heat from the lubricating oil to the outside. The cooled lubricating oil flows back into the reducer housing through the return oil pipe, which reduces the temperature of the gears during operation to a certain extent and ensures the stability of the transmission.

[0019] Furthermore, the plurality of heat sinks are arranged at equal intervals on one side of the heat exchange block, and the plurality of heat sinks are integrally formed with the heat exchange block. The side view cross-section of the oil guiding circuit has an "S"-shaped meandering structure. Through the above technical solution, the equal-interval arrangement of the plurality of heat sinks increases the heat dissipation area, the integration improves the heat conduction efficiency, and the S-shaped oil guiding circuit extends the oil flow path. The combination of these three features enhances the heat exchange effect and improves the heat dissipation efficiency.

[0020] Furthermore, the impurity removal component includes a hollow mounting base. The top and bottom ports of the mounting base are respectively connected to the oil suction pipe and the connecting pipe. The mounting base is located on one side of the reducer housing. The mounting base has a connecting cylinder inside, and a filter screen cylinder is installed inside the connecting cylinder. The bottom end of the filter screen cylinder is tapered and narrowed. A transparent deposition tube is installed at the bottom port of the filter screen cylinder. The end of the transparent deposition tube extends out of the mounting base. The connection between the transparent deposition tube and the mounting base is sealed, and a threaded rubber plug is installed at the port of the transparent deposition tube.

[0021] The above technical solution filters impurities in the lubricating oil through a filter screen. The filtered lubricating oil flows into the connecting pipe from the bottom of the connecting cylinder, while the impurities are deposited in the transparent sedimentation tube under gravity. Opening the threaded rubber plug and the oil filler cap can discharge the impurities in the transparent sedimentation tube, keeping the lubricating oil entering the circulation system clean. This reduces the possibility of wear on gears and bearings due to impurities, extends the service life of components, and ensures the high efficiency of power transmission.

[0022] Furthermore, the outer periphery of the connecting cylinder fills the top of the mounting base, and the top port of the connecting cylinder corresponds to the top port of the mounting base, so that the lubricating oil flowing into the filter cylinder can be discharged from the tapered narrowing at the bottom of the filter cylinder to the bottom port of the mounting base after filtration, while the impurities filtered by the filter cylinder are deposited at the bottom of the transparent deposition tube.

[0023] The above technical solution connects the top of the connecting cylinder to the oil suction pipe and the bottom to the connecting pipe, forming a lubricating oil circulation channel. This allows the oil to flow sequentially through the filter structure and the heat dissipation system, ensuring the integrity of the circulation path and, to a certain extent, ensuring the continuous and stable flow of the oil.

[0024] Through the above technical solution, the funnel-shaped inclined structure of the connecting cylinder can guide the oil to converge towards the filter screen cylinder. The transparent sedimentation tube is connected to the bottom of the filter screen cylinder to collect filtered impurities, avoid impurity backflow, improve filtration efficiency to a certain extent, ensure oil cleanliness, and reduce component wear.

[0025] Furthermore, the transparent deposition tube is inclined downwards so that the impurities filtered by the filter cylinder can be deposited and accumulated under the action of gravity.

[0026] The above-described solution of this utility model has at least the following beneficial effects:

[0027] This invention utilizes a circulating oil pump to pump lubricating oil into a heat exchange block, while multiple heat sinks dissipate heat from the lubricating oil to the outside. The cooled lubricating oil then flows back into the reducer housing via a return oil pipe, thus achieving the circulating heat dissipation function of the device. This allows the lubricating oil to continuously remove internal heat, reducing thermal wear on gears and bearings to a certain extent, extending the service life of components, ensuring the stability of power transmission, maintaining stable speed and torque parameters during testing, and improving the accuracy of automotive testing data.

[0028] This invention filters impurities in lubricating oil using a filter screen. The filtered lubricating oil flows into the connecting pipe from the bottom of the connecting cylinder. Opening the threaded rubber plug allows the impurities in the transparent sedimentation tube to be discharged. This achieves the foreign matter filtration function of the device, keeping the lubricating oil clean, reducing the possibility of wear on gears and bearings due to impurities, and extending the service life of the components. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0032] Figure 3 This is a three-dimensional cross-sectional structural diagram of the reducer housing of this utility model;

[0033] Figure 4 This is a three-dimensional disassembly diagram of the heat exchanger block provided by this utility model;

[0034] Figure 5A three-dimensional cross-sectional structural diagram of the impurity removal component provided by this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Gearbox housing; 2. Connecting frame; 3. Connecting keyway; 4. Bottom cover; 5. Heat dissipation structure; 501. Circulating oil pump; 502. Multiple heat sinks; 503. Oil return pipe; 504. Oil suction pipe; 505. Connecting pipe; 506. Heat exchange block; 507. Oil guide circuit; 6. Controller; 7. Drive motor; 8. Oil filling cap; 9. Impurity removal assembly; 901. Connecting cylinder; 902. Filter screen cylinder; 903. Mounting base; 904. Transparent sedimentation tube; 905. Threaded rubber plug; 10. Fourth gear; 11. Third gear; 12. Second gear; 13. First gear. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0041] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0042] like Figures 1 to 5 As shown, an embodiment of this utility model provides a speed reducer for automobile testing, including: a speed reducer housing 1, a drive motor 7, a second gear 12, a fourth gear 10, an oil filler cap 8, a heat dissipation structure 5, and a debris removal component 9.

[0043] The drive motor 7 is installed on one side of the reducer housing 1, and a controller 6 is installed on one side of the drive motor 7. The first gear 13 is installed on the output shaft of the drive motor 7.

[0044] The second gear 12 meshes with the first gear 13 and is rotatably connected inside the reducer housing 1 via the first shaft. A third gear 11 is fixedly provided on one side of the first shaft. For example, the middle part of the first shaft and the end near the second gear 12 are rotatably connected to the reducer housing 1 via bearings, and the third gear 11 is provided at the end of the first shaft away from the second gear.

[0045] The fourth gear 10 meshes with the third gear 11 and is rotatably connected inside the reducer housing 1 via the second shaft. The fourth gear 10 rotates synchronously with the second shaft. One end of the second shaft extends out of the reducer housing 1, and a connecting keyway 3 is provided at one end of the second shaft.

[0046] The oil filler cap 8 is threadedly connected to the top of the reducer housing 1, and a bottom cover 4 is installed at the bottom of the reducer housing 1. For example, the top of the reducer housing is provided with an oil filling hole, which is connected to the interior of the reducer housing, and the oil filler cap is threadedly sealed to the oil filling hole.

[0047] The heat dissipation structure 5 is set on the outer wall of the reducer housing 1. The heat dissipation structure 5 includes a circulating oil pump 501 and a heat exchange block 506. The circulating oil pump 501 is fixed on one side of the reducer housing 1. Its output end is connected to the heat exchange block 506, and its input end is connected to the impurity removal component 9 through the connecting pipe 505. The output end of the heat exchange block 506 is connected to the inside of the reducer housing 1 through the return oil pipe 503.

[0048] The impurity removal component 9 is located outside the reducer housing 1. Its input end is connected to the bottom of the reducer housing 1 through the oil suction pipe 504, and its output end is connected to the circulating oil pump 501 through the connecting pipe 505. The impurity removal component 9 is used to filter the lubricating oil.

[0049] In this embodiment of the utility model, the first gear 13 is driven to rotate by the drive motor 7. The meshing of the first gear 13 with the second gear 12 causes the second gear 12 to rotate synchronously. When the second gear 12 rotates, it drives the third gear 11 to rotate together. Then, the third gear 11 drives the fourth gear 10 to rotate by meshing with the fourth gear 10. The fourth gear 10 is connected to the external detection component through the connecting keyway 3 to output power, providing stable power support for vehicle performance testing. By opening the oil filler cap 8, lubricating oil is injected into the inside of the reducer housing 1 to reduce the friction of each group.

[0050] like Figures 1 to 5 As shown, the middle part of the second shaft is fixedly connected to the fourth gear 10. The second shaft is rotatably connected to the reducer housing 1 on both sides of the fourth gear 10 through bearings. The end of the second shaft away from the drive motor 7 extends out of the reducer housing 1, and a connecting frame 2 is fixed to the outer wall of this end. The connecting frame 2 is provided for positioning and mounting of external application equipment.

[0051] like Figure 2 and 4 As shown, an oil guiding circuit 507 is provided inside the heat exchange block 506. Multiple heat sinks 502 are fixed to one side of the heat exchange block 506. Specifically, the multiple heat sinks 502 are evenly distributed on the side facing the external environment. An oil return pipe 503 is installed at the top of the heat exchange block 506, and the oil return pipe 503 is connected to the reducer housing 1. The multiple heat sinks 502 are arranged at equal intervals on one side of the heat exchange block 506, and the multiple heat sinks 502 and the heat exchange block 506 are welded together as an integrated structure. The side cross-section of the oil guiding circuit 507 has an "S"-shaped meandering structure. In some embodiments, the oil guiding circuit 507 may have a built-in meandering pipe to form a more closed oil passage.

[0052] In this embodiment of the invention, when the heat dissipation structure 5 is working, the circulating oil pump 501 is started to draw lubricating oil from the inside of the reducer housing 1 through the oil suction pipe 504. Then, the lubricating oil enters the connecting cylinder 901, is filtered by the impurity removal component 9, and is then transported to the circulating oil pump 501 through the connecting pipe 505. The circulating oil pump 501 pumps the lubricating oil into the heat exchange block 506. The lubricating oil flows in the oil guide circuit 507 inside the heat exchange block 506. The S-shaped oil guide circuit 507 extends the flow path of the lubricating oil. At the same time, the multiple heat dissipation fins 502 on one side of the heat exchange block 506 increase the heat dissipation area. The heat in the lubricating oil is dissipated to the outside through the multiple heat dissipation fins 502. The cooled lubricating oil flows back to the inside of the reducer housing 1 through the return oil pipe 503, which reduces the temperature of the gears during operation to a certain extent and ensures the stability of the transmission.

[0053] like Figure 2 and Figure 5As shown, the impurity removal component 9 includes a hollow mounting base 903. The top and bottom ports of the mounting base 903 are connected to an oil suction pipe 504 and a connecting pipe 505, respectively. The mounting base 903 is located on one side of the reducer housing 1. The mounting base 903 has a connecting cylinder 901 inside, and a filter screen cylinder 902 is installed inside the connecting cylinder 901. The bottom end of the filter screen cylinder 902 is tapered and narrowed. A transparent sedimentation tube 904 is installed at the bottom port of the filter screen cylinder 902. The end of the transparent sedimentation tube 904 extends out of the mounting base 903, and a threaded rubber plug 905 is installed at the port of the transparent sedimentation tube 904.

[0054] In this embodiment of the invention, when the lubricating oil enters the impurity removal component 9, it flows from the oil suction pipe 504 into the connecting cylinder 901. Impurities in the lubricating oil are filtered by the filter screen cylinder 902. The filtered lubricating oil flows from the bottom of the connecting cylinder 901 into the connecting pipe 505, while the impurities are deposited into the transparent sedimentation tube 904 under gravity. Regularly opening the threaded rubber plug 905 and the oil filling cap 8 can discharge the impurities in the transparent sedimentation tube 904, keeping the lubricating oil entering the circulation system clean. This reduces the possibility of wear on gears and bearings due to impurities to a certain extent, extends the service life of components, and ensures the high efficiency of power transmission.

[0055] like Figure 5 As shown, the transparent deposition tube 904 is further inclined downward so that the impurities filtered by the filter cylinder 902 can be deposited and accumulated under the action of gravity.

[0056] The device provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A speed reducer for automobile testing, characterized in that, include: Gearbox housing (1); A drive motor (7) is installed on one side of the reducer housing (1), and a controller (6) is installed on one side of the drive motor (7). A first gear (13) is installed on the output shaft of the drive motor (7). The second gear (12) meshes with the first gear (13) and is rotatably connected inside the reducer housing (1) via the first shaft. The first shaft has a third gear (11) fixedly installed on one side of the second gear (12). The fourth gear (10) meshes with the third gear (11) and is rotatably connected inside the reducer housing (1) via the second shaft. The fourth gear (10) rotates synchronously with the second shaft. One end of the second shaft extends out of the reducer housing (1), and a connecting keyway (3) is provided at one end of the second shaft. The oil filler cap (8) is threaded to the top of the reducer housing (1), and the bottom cover (4) is installed at the bottom of the reducer housing (1). A heat dissipation structure (5) is provided on the outer wall of the reducer housing (1). The heat dissipation structure (5) includes a circulating oil pump (501) and a heat exchange block (506). The circulating oil pump (501) is fixed on one side of the reducer housing (1). Its output end is connected to the heat exchange block (506), and its input end is connected to the impurity removal component (9) through a connecting pipe (505). The output end of the heat exchange block (506) is connected to the inside of the reducer housing (1) through a return oil pipe (503). The impurity removal component (9) is located outside the reducer housing (1). Its input end is connected to the bottom end of the reducer housing (1) through the oil suction pipe (504), and its output end is connected to the circulating oil pump (501) through the connecting pipe (505). The impurity removal component (9) is used to filter the lubricating oil.

2. The speed reducer for automobile testing according to claim 1, characterized in that, The middle part of the second shaft is fixedly connected to the fourth gear (10). The second shaft is rotatably connected to the reducer housing (1) on both sides of the fourth gear (10) through bearings. The end of the second shaft away from the drive motor (7) extends out of the reducer housing (1), and a connecting frame (2) is fixed on the outer wall of the end of the second shaft extending out of the reducer housing (1). The connecting frame (2) is provided for positioning and mounting of external application equipment.

3. The speed reducer for automobile testing according to claim 1, characterized in that, The heat exchange block (506) has an oil guide circuit (507) inside, and multiple heat sinks (502) are fixed on one side of the heat exchange block (506). The oil outlet at the top of the heat exchange block (506) is connected to the oil return pipe (503).

4. The speed reducer for automobile testing according to claim 3, characterized in that, The plurality of heat sinks (502) are arranged at equal intervals on one side of the heat exchange block (506), and the plurality of heat sinks (502) are integrally formed with the heat exchange block (506). The side view cross-section of the oil guide circuit (507) has an "S" shaped meandering structure.

5. The speed reducer for automobile testing according to claim 1, characterized in that, The impurity removal component (9) includes a hollow mounting base (903). The top and bottom ports of the mounting base (903) are connected to the oil suction pipe (504) and the connecting pipe (505), respectively. The mounting base (903) is located on one side of the reducer housing (1). The mounting base (903) has a connecting cylinder (901) inside. The connecting cylinder (901) has a filter screen cylinder (902) inside. The bottom end of the filter screen cylinder (902) is tapered and narrowed. The bottom port of the filter screen cylinder (902) is provided with a transparent deposition tube (904). The end of the transparent deposition tube (904) extends out of the mounting base (903), and the port of the transparent deposition tube (904) is fitted with a threaded rubber plug (905).

6. The speed reducer for automobile testing according to claim 5, characterized in that, The outer periphery of the connecting cylinder (901) fills the top of the mounting base (903), and the top port of the connecting cylinder (901) corresponds to the top port of the mounting base (903) so that the lubricating oil flowing into the filter cylinder (902) can be discharged from the tapered narrowing at the bottom of the filter cylinder (902) to the bottom port of the mounting base (903) after filtration, while the impurities filtered by the filter cylinder (902) are deposited at the bottom of the transparent deposition tube (904).

7. The speed reducer for automobile testing according to claim 6, characterized in that, The transparent deposition tube (904) is inclined downward so that the impurities filtered by the filter cylinder (902) can be deposited and accumulated under the action of gravity.

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