Test bench and test methods for nozzle support assembly, nozzle assembly and transmission system

Abstract

This invention provides a test bench and test method for a nozzle support assembly, a nozzle assembly, and a transmission system. The nozzle support assembly includes: a first support, comprising a first rotation center line and a first connection point, the first support being rotatably connected to the nozzle at the first connection point; a second support, comprising a second rotation center line intersecting the first rotation center line; and a third support, comprising a third rotation center line, a second connection point, and a third connection point, the third rotation center line being perpendicular to the second rotation center line, the third support being rotatably connected to the second support at the second connection point, and connected to the nozzle at the third connection point. The first support supports and drives the nozzle to rotate around the first rotation center line, and the second support, through the third support, supports and drives the nozzle to rotate together around the second rotation center line. This simplifies the test structure.

Description

Technical Field

[0001] This invention relates to the field of transmission system testing, and more particularly to nozzle support assemblies, nozzle assemblies, and test benches and test methods for transmission systems. Background Technology

[0002] In a transmission system test bench, the nozzle is a component used to spray lubricating oil from the oil lines to the lubrication points of the test system. The transmission system structure tested on the test bench contains many components that require lubrication during operation, such as bearings, gears, and splines. To ensure the smooth conduct of the test, it is essential to ensure that oil is sprayed onto all lubrication-required parts. Summary of the Invention

[0003] The object of this invention is to provide a support assembly for a nozzle.

[0004] Another object of the present invention is to provide a nozzle assembly.

[0005] Another object of the present invention is to provide a transmission system test bench.

[0006] Another object of the present invention is to provide a test method for a transmission system.

[0007] According to one aspect of the present invention, a support assembly for a nozzle includes: a first support including a first rotation center line and a first connection point, the first support being rotatably connected to the nozzle at the first connection point; a second support including a second rotation center line intersecting the first rotation center line; and a third support including a third rotation center line, a second connection point, and a third connection point, the third rotation center line being perpendicular to the second rotation center line, the third support being rotatably connected to the second support at the second connection point, and connected to the nozzle at the third connection point; wherein the first connection point is located on the second rotation center line, the second connection point is located on the third rotation center line, and the third connection point is located on the first rotation center line; the first support supports and drives the nozzle to rotate around the first rotation center line, and the second support, through the third support, supports and drives the nozzle to rotate together around the second rotation center line.

[0008] The technical solution of this application, by setting up a rotatable first bracket, second bracket, and third bracket, connected to the nozzle, works together to drive the nozzle to rotate. This allows the nozzle to rotate individually around the first or second rotation center line, or simultaneously around both rotation center lines at a compound angle. This transforms in-plane rotation into spatial rotation, enabling the nozzle to perform flexible multi-angle spraying. This allows for multiple spray points to be accommodated with a single installation, eliminating the need for nozzles at each spray point and frequent changes to the lubrication system for different situations. Furthermore, the nozzle positions can be rationally arranged according to the working conditions of each spray point, fully utilizing the multi-angle spraying capability of the nozzle and reducing redundancy. This not only simplifies the test bench layout but also reduces testing costs. In addition, by setting up a third bracket and a third rotation center line, which rotatably connects with the second bracket at the second connection point, the nozzle can rotate within a wider range of compound angles without jamming, resulting in smoother rotation.

[0009] In one or more embodiments of the aforementioned support assembly, the support assembly has a first state, a second state, and a third state:

[0010] In the first state, the first support rotates, the second support is stationary, relative rotational motion occurs at the third connection point, and the first connection point and the second connection point are stationary;

[0011] In the second state, the second support rotates while the first support remains stationary. A relative rotational motion occurs at the first connection point, while the second and third connection points remain stationary.

[0012] In the third state, the first bracket and the second bracket rotate simultaneously, and relative rotational motion occurs at the first connection point, the second connection point, and the third connection point.

[0013] In one or more embodiments of the bracket assembly, the first bracket includes a horizontal arm and two vertical arms, the vertical arms being located on both sides of the horizontal arm, and the first connection point being located on the horizontal arm; the second bracket includes a first arm, the third bracket includes a second arm, and the second connection point and the third connection point are respectively located on both sides of the second arm.

[0014] In one or more embodiments of the bracket assembly, the bracket assembly further includes a first drive member and a second drive member for outputting rotational motion. The cross arm is fixedly connected to the first drive member, the rotation axis of the first drive member coincides with the first rotation center line, the first arm is fixedly connected to the second drive member, and the rotation axis of the second drive member coincides with the second rotation center line.

[0015] In one or more embodiments of the bracket assembly, the first bracket has a first stepped hole at the first connection point, the second bracket and the third bracket have a second stepped hole and a third stepped hole at the second connection point, respectively, and the third bracket has a fourth stepped hole at the third connection point. Each of the first stepped hole, the second stepped hole, the third stepped hole and the fourth stepped hole is provided with a bearing and a retaining ring, and the retaining ring limits the bearing within the stepped hole.

[0016] In one or more embodiments of the bracket assembly, the inner rings of the bearings with the second stepped bore and the third stepped bore are fitted with pins with an interference fit to connect the second bracket and the third bracket.

[0017] In one or more embodiments of the bracket assembly, the first rotation center line is perpendicular to the second rotation center line, and the first rotation center line, the second rotation center line, and the third rotation center line intersect at a point located on the center line of the nozzle.

[0018] According to another aspect of the invention, a nozzle assembly includes a support assembly as described above and a nozzle connected to the support assembly.

[0019] In one or more embodiments of the nozzle assembly, the nozzle further includes a body and a first arm, a second arm, and a third arm, wherein the first arm, the second arm, and the third arm protrude radially outward from the body and are installed in an interference fit with the inner ring of the bearing of the bracket assembly.

[0020] According to another aspect of the present invention, a transmission system test bench includes a nozzle assembly and a mounting base as described above, wherein the nozzle assembly is mounted on the mounting base.

[0021] According to another aspect of the present invention, a test method for a transmission system includes:

[0022] S1. Set up the nozzle assembly as described above, and install the nozzle assembly on the test bench;

[0023] S2. In the first operating condition of the first transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the first spray position;

[0024] S3. In the second operating condition of the first transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the second spray position.

[0025] In one or more embodiments of the transmission system testing method, the method further includes:

[0026] S4. Replace the first transmission system under test with the second transmission system under test;

[0027] S5. In the first operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the third spray position;

[0028] S6. In the second operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the fourth spray position. Attached Figure Description

[0029] The above and other features, properties, and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features. It should be noted that these drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the scope of protection actually claimed by the present invention, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of a nozzle assembly according to one embodiment;

[0031] Figure 2 According to one embodiment Figure 1 A cross-sectional view along the MM direction of the structural schematic diagram of the nozzle assembly;

[0032] Figure 3 According to one embodiment Figure 1 A cross-sectional view along the NN direction of the structural schematic diagram of the nozzle assembly;

[0033] Figure 4 This is a schematic diagram of the structure of the second stepped hole in one embodiment;

[0034] Figure 5 This is a flowchart of a test method for a transmission system according to one embodiment.

[0035] Figure label:

[0036] 100 - Nozzle, 200 - Support assembly, 300 - Nozzle assembly;

[0037] 1-First support, 11-First rotation center line, 12-First connection point, 101-Horizontal arm, 102-Vertical arm;

[0038] 2-Second support, 21-Second rotation center line, 201-First arm

[0039] 3-Third support, 31-Third rotation center line, 32-Second connection point, 33-Third connection point, 301-Second arm;

[0040] 4-First driving component, 41-Rotation axis of the first driving component, 5-Second driving component, 51-Rotation axis of the second driving component;

[0041] 6-Step hole, 61-First step hole, 62-Second step hole, 63-Third step hole, 64-Fourth step hole, 601-First hole, 602-Second hole, 603-Third hole, 604-Fourth hole;

[0042] 7-pin;

[0043] 70-Main body, 71-First arm, 72-Second arm, 73-Third arm;

[0044] 81, 82, 83, 84 - bearings; 811, 841, 821, 831 - bearing inner rings;

[0045] 91, 92, 93, 94 - Card rings. Detailed Implementation

[0046] Reference will now be made in detail to various embodiments of the invention, examples of which are shown in the accompanying drawings and described below. Although the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to those exemplary embodiments. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit and scope of the invention as defined by the appended claims.

[0047] In the following description, the orientation or positional relationship indicated by the terms "radial," "upper," "lower," "outer," or other directional terms is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of the invention and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0048] Furthermore, this application uses specific terms to describe its embodiments. For example, "an embodiment" and / or "one embodiment" refers to a particular feature, structure, or characteristic associated with at least one embodiment of this application. Therefore, it should be emphasized and noted that "an embodiment" or "one embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application can be appropriately combined.

[0049] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Other operations may be added to these processes, or one or more operations may be removed from these processes.

[0050] Currently, with the increasing demands for efficiency and economy in transmission system testing, there is a need to further improve the structure of transmission system test benches.

[0051] The inventors of this application, through in-depth research, discovered that during transmission system testing, some components of the same transmission system operate intermittently under different working conditions, thus the locations requiring lubrication change accordingly. Furthermore, when testing transmission systems with different structures on the same test bench, the locations requiring lubrication also change with the replacement of the transmission system under test. Currently, one approach to address these issues is to install an oil injection point for each location requiring lubrication, resulting in a highly complex lubrication system layout. Another approach is to replace the lubrication system with a new one for different test conditions or different systems under test to ensure that oil is sprayed at all locations requiring lubrication. Both methods lead to high testing costs. Moreover, regardless of the method, in a single actual test, not all oil injection points need to be active, and redundant structures significantly increase testing costs.

[0052] Based on the above considerations, the inventors, after in-depth research, designed a nozzle support assembly. By setting up rotatable first, second, and third supports connected to the nozzle, they work together to drive the nozzle's rotation. This allows the nozzle to rotate individually around a first or second rotation center line, or simultaneously around both centers at a compound angle. This transforms in-plane rotation into spatial rotation, enabling flexible multi-angle spraying. A single installation can accommodate multiple spray points, eliminating the need for individual nozzles at each point and frequent lubrication system replacements for different situations. Furthermore, the nozzle positions can be rationally arranged according to the working conditions of each spray point, fully utilizing the multi-angle spraying capability and reducing redundancy. This simplifies the test bench layout and reduces testing costs. In addition, by setting up a third support and a third rotation center line, which rotatably connects with the second support at a second connection point, the nozzle can rotate within a wider range of compound angles without jamming, resulting in smoother rotation.

[0053] Although the nozzle support assembly disclosed in the embodiments of this application is suitable for transmission system testing to achieve the effect of flexible multi-angle oil spraying, it is not limited thereto. As long as the purpose of simplifying the lubrication system structure and achieving multi-angle spraying from a single nozzle is to be achieved, the concept of the support assembly disclosed in the embodiments of this application can be applied.

[0054] refer to Figure 1 As shown, in one embodiment, the support assembly 200 for the nozzle 100 includes a first support 1, a second support 2, and a third support 3. The first support 1 includes a first rotation center line 11 and a first connection point 12, and the first support 1 is rotatably connected to the nozzle 100 at the first connection point 12. The second support 2 includes a second rotation center line 21, which intersects the first rotation center line 11. The third support 3 includes a third rotation center line 31, a second connection point 32, and a third connection point 33, where the third rotation center line 31 is perpendicular to the second rotation center line 21. The third support 3 is rotatably connected to the second support 2 at the second connection point 32 and connected to the nozzle 100 at the third connection point 33. The first connection point 12 is located on the second rotation center line 21, the second connection point 32 is located on the third rotation center line 31, and the third connection point 33 is located on the first rotation center line 11. The first support 1 supports and drives the nozzle 100 to rotate around the first rotation center line 11, and the second support 2, through the third support 3, supports and drives the nozzle 100 to rotate together around the second rotation center line 21.

[0055] The "first support 1, second support 2, and third support 3" here refer to structures that are connected to the nozzle and can support the nozzle. Their structural forms are not limited to the traditional literal meaning of "frame" and can also be a single column, rod, or a combination of multiple columns or rods.

[0056] The beneficial effects of this embodiment are that by setting up rotatable first, second, and third supports connected to the nozzle, they cooperate to drive the nozzle to rotate. This allows the nozzle to rotate individually around the first or second rotation center line, or simultaneously around both rotation center lines at a compound angle. This transforms in-plane rotation into spatial rotation, enabling flexible multi-angle spraying. A single installation can accommodate multiple spray points, eliminating the need for individual nozzle installations at each spray point or frequent lubrication system replacements for different situations. Furthermore, the nozzle positions can be rationally arranged according to the working conditions of each spray point, fully utilizing the multi-angle spraying capability and reducing redundancy. This not only simplifies the test bench layout but also reduces testing costs. In addition, by setting up the third support and the third rotation center line, which rotatably connects with the second support at the second connection point, the nozzle can rotate within a wider range of compound angles without jamming, resulting in smoother rotation.

[0057] Continue to refer to Figure 1 As shown, in some embodiments, the specific structure of the support assembly 200 may be such that the support assembly 200 has a first state, a second state, and a third state:

[0058] In the first state, the first support 1 rotates, the second support 2 is stationary, and a relative rotational motion occurs at the third connection point 33, while the first connection point 12 and the second connection point 32 are stationary. That is, in the first state, only the first support 1 needs to be adjusted to drive the nozzle 100 to rotate around the first rotation center line 11 in the plane, which can meet the spraying requirements.

[0059] In the second state, the second bracket 2 rotates while the first bracket 1 remains stationary. A relative rotational motion occurs at the first connection point 12, while the second connection point 32 and the third connection point 33 remain stationary. That is, in the second state, only the second bracket 2 needs to be adjusted to rotate the nozzle 100 around the second rotation center line 21 in the plane, which satisfies the spraying requirements.

[0060] In the third state, the first bracket 1 and the second bracket 2 rotate simultaneously, and relative rotational motion occurs at the first connection point 12, the second connection point 32, and the third connection point 33. That is, in the third state, the first bracket 1 and the second bracket 2 need to be adjusted simultaneously to drive the nozzle 100 to rotate around the first rotation center line 11 and the second rotation center line 21 in space to meet the spraying requirements. At this time, rotational motion occurs at the second connection point 32, that is, relative rotation also occurs between the second bracket 2 and the third bracket 3, making the rotation of the nozzle 100 smoother and the angle range wider.

[0061] Continue to refer to Figure 1 As shown, in some embodiments, the specific structure of the support assembly 200 can be as follows: the first support 1 includes a horizontal arm 101 and two vertical arms 102, with the vertical arms 102 located on both sides of the horizontal arm 101, and the first connection point 12 located on the horizontal arm 101; the second support 2 includes a first arm 201, and the third support 3 includes a second arm 301, with the second connection point 32 and the third connection point 33 located on both sides of the second arm 301, respectively. Specifically, the horizontal arm 101 and the vertical arm 102 of the first support 1 form a concave-shaped structure; the first arm 201 of the second support 2 and the second arm 301 of the third support 3 are rotatably connected at the second connection point, forming a jointed arm with a movable joint. By setting the jointed arm and the two vertical arms of the concave arm to connect with the nozzle, the nozzle can rotate smoothly in space while also providing good support.

[0062] Continue to refer to Figure 1As shown, in some embodiments, the specific structure of the support assembly 200 may further include a first driving member 4 and a second driving member 5 for outputting rotational motion. The cross arm 101 is fixedly connected to the first driving member 4, and the rotation axis 41 of the first driving member 4 coincides with the first rotation center line 11. The first arm 201 is fixedly connected to the second driving member 5, and the rotation axis 51 of the second driving member 5 coincides with the second rotation center line 21. Specifically, the first driving member 4 drives the first support 1 to rotate the nozzle 100 around the first rotation center line 11, and the second driving member 5 drives the second support 2 to rotate the nozzle 100 around the second rotation center line 21. The advantage of this configuration is that the automatic rotation of the nozzle can be achieved by controlling the driving members.

[0063] In some embodiments, the first driving element 4 and the second driving element 5 are motors.

[0064] refer to Figure 2 , Figure 3 As shown, in some embodiments, the specific structure of the bracket assembly 200 can be as follows: the first bracket 1 has a first stepped hole 61 at the first connection point 12; the second bracket 2 and the third bracket 3 have second stepped holes 62 and third stepped holes 63 at the second connection point 32, respectively; and the third bracket 3 has a fourth stepped hole 64 at the third connection point 33. Bearings 81, 82, 83, and 84, and retaining rings 91, 92, 93, and 94 are provided in each of the first stepped hole 61, second stepped hole 62, third stepped hole 63, and fourth stepped hole 64, respectively. The retaining rings 91, 92, 93, and 94 limit the bearings 81, 82, 83, and 84 within each stepped hole 6. The advantage of this arrangement is that rotational connection at each connection point can be achieved through the cooperation of the stepped holes, bearings, and retaining rings. The structure is simple, easy to assemble, and low in cost.

[0065] In some embodiments, such as Figure 2 , Figure 3 , Figure 4As shown, the first stepped hole 61, the second stepped hole 62, the third stepped hole 63, and the fourth stepped hole 64 have the same structure. Taking the second stepped hole 62 as an example, the second stepped hole 62 is a through hole, including the first hole 601, the second hole 602, the third hole 603, and the fourth hole 604. The diameters of the second hole 602 and the fourth hole 604 are the same, the diameter of the third hole 603 is larger than the diameter of the second hole 602, and the diameter of the fourth hole 604 is larger than the diameter of the first hole 601. Bearings 81, 82, 83, and 84 Insert the fourth hole 604 into the stepped hole 6 and place it into the second hole 602. The radial lower wall 6011 of the first hole 601 limits the axial upper wall of bearings 81, 82, 83, and 84. The retaining rings 91, 92, 93, and 94 are also inserted from the fourth hole 604 into the stepped hole 6 and placed into the third hole 603, limiting the axial lower wall of bearings 81, 82, 83, and 84. In this way, the retaining rings 91, 92, 93, and 94 fix bearings 81, 82, 83, and 84 in their respective brackets, making disassembly and assembly convenient.

[0066] refer to Figure 1 Combination Figure 2 , Figure 3 As shown, in some embodiments, the specific structure of the bracket assembly 200 may be such that the inner ring 821 of the bearing 82 in the second stepped hole 62 and the inner ring 831 of the bearing 83 in the third stepped hole 63 are interference-fitted with the pin 7 to connect the second bracket 2 and the third bracket 3. The advantage of this arrangement is that the rotational connection between the second bracket and the third bracket is achieved through the cooperation of the stepped hole, bearing and pin, which is simple in structure and easy to assemble.

[0067] Continue to refer to Figure 1 Combination Figure 2 , Figure 3 As shown, in some embodiments, the specific structure of the support assembly 200 may be such that the first rotation center line 11 is perpendicular to the second rotation center line 21, and the first rotation center line 11, the second rotation center line 21, and the third rotation center line 31 intersect at a point A, which is located at the center line a of the nozzle 100. The advantage of this arrangement is that it ensures that the rotation center of the nozzle coincides with the rotation center of the support assembly, guaranteeing that the nozzle can rotate freely around the rotation center without interference from the support assembly, thus facilitating precise control of the nozzle's rotation angle.

[0068] refer to Figure 1As shown, in one embodiment, the nozzle assembly 300 may specifically include the support assembly 200 as described above and the nozzle 100 connected to the support assembly 200. The nozzle assembly using the aforementioned support assembly allows for flexible multi-angle rotation of the nozzle, accommodating the lubrication needs of multiple spray positions with a single installation. This eliminates the need to install nozzles at each spray position or frequently replace the lubrication system for different situations. Furthermore, the nozzle positions can be rationally arranged according to the working conditions of each spray point, fully utilizing the multi-angle spraying capability of the nozzle and reducing redundancy. This not only simplifies the test bench layout but also reduces testing costs, and the nozzle can smoothly rotate from in-plane to spatial rotation.

[0069] refer to Figure 1 Combination Figure 2 , Figure 3 As shown, in some embodiments, the nozzle 100 may include a body 70 and a first support arm 71, a second support arm 72, and a third support arm 73. The first support arm 71, the second support arm 72, and the third support arm 73 protrude radially outward from the body 70 and are interference-fitted with the bearing inner rings 811 and 841 of the support assembly 200. The advantage of this configuration is that the nozzle's support arms facilitate assembly with the support assembly, resulting in a simple structure and easy operation. It is understood that the nozzle's support arms can also be separate parts, assembled onto the nozzle, or an adapter sleeve between the nozzle and the support assembly can be provided. Different sizes of adapter sleeves can be designed for different nozzles to broaden the applicability of the nozzle assembly.

[0070] refer to Figure 1 As shown, in one embodiment, the specific structure of the transmission system test bench may include the nozzle assembly 300 and a mounting base (not shown in the figure) as described above, with the nozzle assembly 300 mounted on the mounting base. The transmission system test bench using the above-described nozzle assembly can effectively simplify the test bench structure layout, reduce redundant structures, and eliminate the need for frequent replacement of the lubrication system, thereby reducing testing costs.

[0071] refer to Figure 5 As shown, in one embodiment, the specific steps of the transmission system test method may include:

[0072] S1. Set up the nozzle assembly as described above and install the nozzle assembly on the test bench;

[0073] S2. In the first operating condition of the first transmission system under test, the support assembly 200 of the nozzle assembly is controlled to rotate the nozzle of the nozzle assembly to the first spray position. Continuing from the above, as... Figure 1 As shown, the first driving component 4 and / or the second driving component 5 are controlled to drive the first bracket 1 and / or the second bracket 2 to rotate the nozzle 100 by a first angle, thereby spraying lubrication at the first spray position.

[0074] S3. In the second operating condition of the first transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the second spray position. Continuing from the above, as... Figure 1 As shown, the first drive unit 4 and / or the second drive unit 5 are controlled to drive the first bracket 1 and / or the second bracket 2 to rotate the nozzle 100 by a second angle, thereby spraying lubrication at the second spray position.

[0075] The beneficial effect of this embodiment is that by using the above-mentioned nozzle assembly for testing, it is not necessary to frequently change the lubrication system for different working conditions, nor is it necessary to arrange the nozzle assembly for each spray position. The test structure is simple, with few redundant structures, which improves test efficiency and reduces test costs.

[0076] Continue to refer to Figure 5 As shown, in some embodiments, the specific steps of the transmission system test method may include:

[0077] S4. Replace the first transmission system under test with the second transmission system under test. Continuing from the above, as... Figure 1 As shown, the tested transmission system is removed from the test bench, replaced with another transmission system of a different structure, and the previous nozzle assembly 300 is used to start a new round of testing.

[0078] S5. In the first operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the third spray position. Continuing from the above, as... Figure 1 As shown, the first driving component 4 and / or the second driving component 5 are controlled to drive the first bracket 1 and / or the second bracket 2 to rotate the nozzle 100 by a third angle, thereby spraying lubrication at the third spray position.

[0079] S6. In the second operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the fourth spray position. Continuing from the above, as... Figure 1 As shown, the first driving member 4 and / or the second driving member 5 are controlled to drive the first bracket 1 and / or the second bracket 2 to rotate the nozzle 100 to a fourth angle, so as to spray lubrication at the fourth spray position.

[0080] The advantage of this setup is that by using the above-mentioned nozzle assembly for testing, it is not necessary to change different lubrication systems for different transmission systems under test, thus saving test time, improving test efficiency, and reducing test costs.

[0081] In summary, the beneficial effects of the test bench and test method for the nozzle support assembly, nozzle assembly, and transmission system described in the above embodiments include, but are not limited to, one or a combination of the following:

[0082] 1. The bracket assembly of this application, by setting up a rotatable first bracket, second bracket, and third bracket, connects to the nozzle and works together to drive the nozzle to rotate. This allows the nozzle to rotate individually around the first or second rotation center line, or simultaneously around the first and second rotation center lines at a compound angle. This transforms in-plane rotation into spatial rotation, enabling the nozzle to perform flexible multi-angle spraying. A single installation can accommodate multiple spray points, eliminating the need for nozzles at each spray point or frequent changes to the lubrication system for different situations. Furthermore, the nozzle positions can be rationally arranged according to the working conditions of each spray point, fully utilizing the multi-angle spraying capability of the nozzle and reducing redundancy. This not only simplifies the test bench layout but also reduces testing costs. In addition, by setting up the third bracket and the third rotation center line, which rotatably connects with the second bracket at the second connection point, the nozzle can rotate within a wider range of compound angles without jamming, resulting in smoother rotation.

[0083] 2. The nozzle assembly of this application can achieve flexible multi-angle rotation of the nozzle, and can take into account the lubrication needs of multiple spray positions with one installation. It is not necessary to install nozzles for each spray position, nor is it necessary to frequently change the lubrication system for different situations. At the same time, the nozzle positions can be reasonably arranged according to the working conditions of each spray point, making full use of the multi-angle spray capability of the nozzle and reducing redundancy. This not only simplifies the test bench layout structure, but also reduces the test cost. Moreover, the nozzle can smoothly rotate from in-plane rotation to spatial rotation.

[0084] 3. The transmission system test bench of this application can effectively simplify the test bench structure layout, reduce redundant structures, and eliminate the need for frequent replacement of the lubrication system, thereby reducing test costs.

[0085] 4. The transmission system test method of this application does not require frequent replacement of the lubrication system for different working conditions, nor does it require arranging nozzle assemblies for each injection position. The test structure is simple, with few redundant structures, high test efficiency, and low cost.

[0086] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A support assembly for a nozzle, characterized in that, include: The first bracket includes a first rotation center line and a first connection point, and the first bracket is rotatably connected to the nozzle at the first connection point; The second support includes a second rotation center line, which intersects the first rotation center line; The third support includes a third rotation center line, a second connection point, and a third connection point. The third rotation center line is perpendicular to the second rotation center line. The third support is rotatably connected to the second support at the second connection point and is connected to the nozzle at the third connection point. Wherein, the first connection point is located on the second rotation center line, the second connection point is located on the third rotation center line, and the third connection point is located on the first rotation center line; the first bracket supports and drives the nozzle to rotate around the first rotation center line, and the second bracket supports and drives the nozzle to rotate together around the second rotation center line through the third bracket.

2. The support assembly according to claim 1, characterized in that, The support assembly has a first state, a second state, and a third state: In the first state, the first support rotates, the second support is stationary, relative rotational motion occurs at the third connection point, and the first connection point and the second connection point are stationary; In the second state, the second support rotates while the first support remains stationary. A relative rotational motion occurs at the first connection point, while the second and third connection points remain stationary. In the third state, the first bracket and the second bracket rotate simultaneously, and relative rotational motion occurs at the first connection point, the second connection point, and the third connection point.

3. The support assembly according to claim 1, characterized in that, The first support includes a horizontal arm and two vertical arms, the vertical arms being located on both sides of the horizontal arm, and the first connection point being located on the horizontal arm; the second support includes a first arm, the third support includes a second arm, and the second connection point and the third connection point are respectively located on both sides of the second arm.

4. The support assembly according to claim 3, characterized in that, The bracket assembly further includes a first driving member and a second driving member for outputting rotational motion. The cross arm is fixedly connected to the first driving member, and the rotation axis of the first driving member coincides with the first rotation center line. The first arm is fixedly connected to the second driving member, and the rotation axis of the second driving member coincides with the second rotation center line.

5. The support assembly according to claim 1, characterized in that, The first bracket has a first stepped hole at the first connection point, the second bracket and the third bracket have a second stepped hole and a third stepped hole at the second connection point respectively, and the third bracket has a fourth stepped hole at the third connection point. Each of the first stepped hole, the second stepped hole, the third stepped hole and the fourth stepped hole is provided with a bearing and a retaining ring, and the retaining ring limits the bearing within the stepped hole.

6. The support assembly according to claim 5, characterized in that, The inner rings of the bearings with the second stepped bore and the bearings with the third stepped bore are installed with an interference fit to connect the second bracket and the third bracket.

7. The support assembly according to claim 1, characterized in that, The first rotation center line is perpendicular to the second rotation center line, and the first rotation center line, the second rotation center line, and the third rotation center line intersect at a point located on the center line of the nozzle.

8. A nozzle assembly, characterized in that, It includes the support assembly as described in any one of claims 1-7 and the nozzle connected to the support assembly.

9. The nozzle assembly according to claim 8, characterized in that, The nozzle also includes a body and a first arm, a second arm, and a third arm. The first arm, the second arm, and the third arm protrude radially outward from the body and are installed with an interference fit to the inner ring of the bearing of the bracket assembly.

10. A test bench for a transmission system, characterized in that, It includes the nozzle assembly and mounting base as described in any one of claims 8-9, wherein the nozzle assembly is mounted on the mounting base.

11. A test method for a transmission system, characterized in that, include: S1. Set the nozzle assembly as described in claims 8-9, and install the nozzle assembly on the test bench; S2. In the first operating condition of the first transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the first spray position; S3. In the second operating condition of the first transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the second spray position.

12. The transmission system test method according to claim 11, characterized in that, Also includes: S4. Replace the first transmission system under test with the second transmission system under test; S5. In the first operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the third spray position; S6. In the second operating condition of the second transmission system under test, control the support assembly of the nozzle assembly to rotate the nozzle of the nozzle assembly to the fourth spray position.

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