Seawater platform lifting unit gearbox test device

Abstract

The invention provides a seawater platform lifting unit gearbox testing device, which belongs to the technical field of gearbox testing, and comprises a main test motor assembly, an auxiliary test motor assembly, a main test gearbox, an auxiliary test gearbox, a box body assembly, a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the main test gearbox; the output end of the accompanying test motor assembly is connected with the second transmission mechanism, and the second transmission mechanism is connected with the accompanying test gearbox. The main test motor assembly and the first transmission mechanism are located on one side of the box body assembly, the accompanying test motor assembly and the second transmission mechanism are located on the other side of the box body assembly, the main test gearbox and the accompanying test gearbox are both connected to the box body assembly, and an open output gear of the main test gearbox is in meshed connection with an open output gear of the accompanying test gearbox. An idle gear does not need to be arranged, the open output gears of the two gear boxes are directly meshed, and the transmission efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox testing, and in particular to a gearbox testing device for a seawater platform lifting unit. Background Art

[0002] The lifting unit gearbox is the core component for realizing the overall lifting of offshore drilling platforms. The lifting and lowering of the platform is achieved by meshing the open output gear of the lifting unit gearbox with the rack fixed on the column.

[0003] For newly designed offshore platform lifting unit gearboxes, type tests are required for prototypes after assembly to verify the reliability of the model, and each reducer is tested before leaving the factory. Conventional planetary reducer type tests usually involve two gearboxes being installed back-to-back to achieve mutual loading, but the open output gears of this type of reducer are relatively small relative to the body contour, and the two cannot directly mesh to transmit torque, so conventional back-to-back loading is not applicable.

[0004] In order to solve the above problems, it is urgent to develop a seawater platform lifting unit gearbox test device. Summary of the invention

[0005] According to the technical problems raised above, a test device for the gearbox of a lifting unit of a sea platform is provided. The present invention mainly realizes the direct meshing and torque transmission of the open output gears of the two lifting unit gearboxes by arranging the two gearboxes to be tested in rotational symmetry around the center line of the vertical direction of the box body. The two open output gears are directly inserted into the interior of the box body from both sides, and there is no need to set additional bearings, gears and other components, and there is no need to set a box dividing surface. The box body of the present invention is designed as an integrated body, with a simple structure and easy production. The present invention can solve the problem that the open output gears of the two lifting unit gearboxes cannot directly mesh and transmit torque during the towing test, so that the gearbox can be independently loaded on a conventional test bench. It can simulate its actual working conditions, test temperature, vibration, lubrication, sealing, gear meshing and other items, improve the reliability and safety of the gearbox, and reduce costs and increase efficiency.

[0006] The technical means adopted by the present invention are as follows: A gearbox test device for a seawater platform lifting unit, comprising: a main test motor assembly, a companion test motor assembly, a main test gearbox, a companion test gearbox, a box assembly, a first transmission mechanism and a second transmission mechanism, wherein the output end of the main test motor assembly is connected to the first transmission mechanism, and the first transmission mechanism is connected to the main test gearbox; the output end of the companion test motor assembly is connected to the second transmission mechanism, and the second transmission mechanism is connected to the companion test gearbox; The main test motor assembly and the first transmission mechanism are located on one side of the box assembly, the accompanying test motor assembly and the second transmission mechanism are located on the other side of the box assembly, the main test gearbox and the accompanying test gearbox are both connected to the box assembly, and the open output gear of the main test gearbox is meshed with the open output gear of the accompanying test gearbox.

[0007] Furthermore, it also includes a bearing seat assembly 1 and a bearing seat assembly 2, the box assembly includes a box, the box is installed on the test bench table, the bearing seat assembly 1 and the bearing seat assembly 2 are respectively embedded on both sides of the box, the bearing seat assembly 1 is on the same side as the accompanying test gearbox, and the bearing seat assembly 2 is on the same side as the main test gearbox; The main test gearbox and the accompanying test gearbox are respectively embedded on both sides of the box body through flanges, and are arranged in rotational symmetry with respect to the center line of the box body in the vertical direction; The open output gears of the main test gearbox and the accompanying test gearbox both extend into the box body and mesh with each other to transmit torque; the outer bearing of the open output gear of the main test gearbox is inserted into the inner hole of the bearing seat assembly one, and the outer bearing one of the open output gear of the accompanying test gearbox is inserted into the inner hole of the bearing seat assembly two.

[0008] Furthermore, the first transmission mechanism includes a torque meter 1, a universal coupling 1 and an input shaft assembly 1, the two sides of the torque meter 1 are respectively connected to the main test motor assembly and the universal coupling 1, the universal coupling 1 is connected to one side of the input shaft assembly 1, and the other side of the input shaft assembly 1 is connected to the main test gearbox.

[0009] Furthermore, the second transmission mechanism includes a torque meter 2, a universal coupling 2 and an input shaft assembly 2, the two sides of the torque meter 2 are respectively connected to the accompanying test motor assembly and the universal coupling 2, the universal coupling 2 is connected to one side of the input shaft assembly 2, and the other side of the input shaft assembly 2 is connected to the accompanying test gearbox.

[0010] Furthermore, the input shaft assembly includes a spline shaft, a spline sleeve, a bearing seat, a bearing, an oil seal and a pressure cover, one end of the external spline of the spline shaft is connected to the internal spline of the main test gearbox, and the other end is connected to the internal spline of the spline sleeve; the flange of the spline sleeve is connected to the flange of the universal joint, the outer circle of the spline sleeve is fixed in the bearing seat through a bearing, the flange of the bearing seat is engaged with the end face of the main test gearbox, the oil seal is installed inside the pressure cover, and the pressure cover is fixed to the end face of the bearing seat.

[0011] Furthermore, the input shaft assembly 2 has the same structure as the input shaft assembly 1 of the first transmission mechanism, including a spline shaft 1, a spline sleeve 1, a bearing seat 3, a bearing 1, an oil seal 1 and a pressure cover 1. One end of the external spline of the spline shaft 1 is connected to the internal spline of the companion test gear box, and the other end is connected to the internal spline of the spline sleeve 1; the flange of the spline sleeve 1 is connected to the flange of the universal joint 2, the outer circle of the spline sleeve 1 is fixed in the bearing seat 3 through the bearing 1, the flange of the bearing seat 3 is engaged with the end face of the companion test gear box, the oil seal 1 is installed inside the pressure cover 1, and the pressure cover 1 is fixed to the end face of the bearing seat 3.

[0012] Furthermore, the box assembly also includes an adjustment gasket group, and flange grooves are opened on both sides of the box, and the flange grooves on both sides are rotationally symmetrical about the center line in the vertical direction. The flange grooves on both sides are respectively used to install the flanges of the main test gearbox, the companion test gearbox, the bearing seat assembly one and the bearing seat assembly two, and adjustment gasket groups are arranged in the gaps between the flange grooves and the flanges.

[0013] Furthermore, the bearing seat assembly 1 includes a bearing seat 2 and an end cover, the outer bearing of the open output gear of the main test gearbox is fixed in the bearing seat 2, the bearing seat 2 is fixed to the box body by a bolt group, and the end cover is fixed to the end face of the bearing seat 2.

[0014] Furthermore, the structure of the bearing seat assembly 2 is the same as that of the bearing seat assembly 1, including a bearing seat 4 and an end cover 1. The outer bearing 1 of the open output gear of the companion gear box is fixed in the bearing seat 4. The bearing seat 4 is fixed to the box body by a bolt group, and the end cover 1 is fixed to the end face of the bearing seat 4.

[0015] Furthermore, ribs are provided on both sides of the box body, and the ribs on both sides are rotationally symmetrical about the center line in the vertical direction.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The seawater platform lifting unit gearbox test device provided by the present invention does not need to be provided with an idler gear, and the open output gears of the two gearboxes are directly meshed, which has a simpler structure and saves the production cost of the idler gear and its matching bearings and the housing and other parts. In the prior art, an idler gear and related components need to be provided between the two gearboxes.

[0017] 2. The gearbox test device for the lifting unit of a seawater platform provided by the present invention has the open output gears of the two gearboxes directly meshed, which has a higher transmission efficiency. In the prior art, an idler gear needs to be arranged between the two gearboxes, which has an extra gear meshing and low transmission efficiency, and is not conducive to testing the actual efficiency of the gearbox.

[0018] 3. The gearbox test device for the lifting unit of the seawater platform provided by the present invention has an integrated box body design, a simple structure, and is easy to produce. The existing technology adopts a split box design with studs, which is not conducive to cost control.

[0019] 4. The gearbox test device for the lifting unit of a seawater platform provided by the present invention has flanges on the outside of each input shaft assembly, which can be directly engaged with the flange of the universal coupling, which is more convenient and reliable. The input shaft assembly of the prior art uses a cylindrical shaft head and is additionally equipped with a coupling, which has the risk of failure.

[0020] Based on the above reasons, the present invention can be widely promoted in the fields of offshore drilling platforms and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is the front view of the present invention.

[0023] Figure 2 It is a top view of the present invention.

[0024] Figure 3 It is a structural schematic diagram of an input shaft assembly of the present invention.

[0025] Figure 4 It is a schematic diagram of the box structure of the present invention.

[0026] Figure 5 This is an installation diagram of the adjustment pad assembly of the present invention.

[0027] Figure 6 It is a structural schematic diagram of a bearing seat assembly of the present invention.

[0028] In the figure: 1. Main test motor assembly; 2. Accompanying test motor assembly; 3. Torque meter 1; 4. Torque meter 2; 5. Universal coupling 1; 6. Universal coupling 2; 7. Input shaft assembly 1; 7.1. Spline shaft; 7.2. Spline sleeve; 7.3. Bearing seat 1; 7.4. Bearing; 7.5. Oil seal; 7.6. Pressure cover; 8. Input shaft assembly 2; 9. Main test gearbox; 9.1. Internal spline; 9.2. Outer bearing; 10. Accompanying test gearbox; 11. Case assembly; 11.1. Case; 11.1.1. Flange groove; 11.2. Bolt group; 11.3. Adjustment pad group; 12. Bearing seat assembly 1; 12.1. Bearing seat 2; 12.2. End cover; 13. Bearing seat assembly 2. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0035] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] The invention provides a gearbox test device for a seawater platform lifting unit, which is used to simulate the actual working condition of the gearbox and to test items such as temperature, vibration, lubrication, sealing, and gear meshing.

[0037] The device of the present invention includes a main test motor assembly 1, a companion test motor assembly 2, a torque meter 1 3, a torque meter 2 4, a universal coupling 1 5, a universal coupling 2 6, an input shaft assembly 1 7, an input shaft assembly 2 8, a main test gearbox 9, a companion test gearbox 10, a box assembly 11, a bearing seat assembly 1 12, a bearing seat assembly 2 13, etc. The box assembly 11 includes a box 11.1, and the box 11.1 is installed on the test bench. The main test motor assembly 1, the companion test motor assembly 2, the torque meter 1 3, and the torque meter 2 4 can all be installed on a bracket, and the bracket is installed on the test bench.

[0038] like Figure 1 and Figure 2As shown, the output end of the main test motor assembly 1 is connected to the torque meter 1-3, the torque meter 1-3, the universal coupling 1-5 and the input shaft assembly 1-7 are connected in sequence, the input shaft assembly 1-7 is connected to the main test gearbox 9, and the bearing seat assembly 1-12 is connected to the box body 11.1 and connected to the main test gearbox 9. The output end of the accompanying test motor assembly 2 is connected to the torque meter 2-4, the torque meter 2-4, the universal coupling 2-6 and the input shaft assembly 2-8 are connected in sequence, the input shaft assembly 2-8 is connected to the accompanying test gearbox 10, and the bearing seat assembly 2-13 is connected to the box body 11.1 and connected to the accompanying test gearbox 10. The main test motor assembly 1, the torque meter 1-3, the universal coupling 1-5, and the input shaft assembly 1-7 are all located on the right side of the box body 11.1, and the accompanying test motor assembly 2, the torque meter 2-4, the universal coupling 2-6, and the input shaft assembly 2-8 are all located on the left side of the box body 11.1. The bearing seat assembly 12 is on the same side as the accompanying test gearbox 10, and both are connected to the left side of the housing 11.1. The bearing seat assembly 2 13 is on the same side as the main test gearbox 9, and both are connected to the right side of the housing 11.1.

[0039] like Figure 1 and Figure 2 As shown, the main test motor assembly 1 drives the main test gearbox 9 through the torque meter 3, the universal coupling 5 and the input shaft assembly 7. The main test gearbox 9 and the accompanying test gearbox 10 are respectively embedded in the right front and left rear of the box body 11.1 through flanges, and are arranged in rotational symmetry with respect to the center line X in the vertical direction of the box body 11.1. The open output gear of the main test gearbox 9 and the open output gear of the accompanying test gearbox 10 are both extended into the box body 11.1, and mesh with each other to transmit torque. The outer bearings of the two open output gears are respectively inserted into the inner holes of the bearing seat assembly 12 and the bearing seat assembly 2 13, wherein the outer bearing 9.2 of the open output gear of the main test gearbox 9 is inserted into the inner hole of the bearing seat assembly 12, and the outer bearing 1 of the open output gear of the accompanying test gearbox 10 is inserted into the inner hole of the bearing seat assembly 2 13. The bearing seat assembly 12 and the bearing seat assembly 2 13 are respectively embedded in the left front and right rear of the box body 11.1 through flanges. The accompanying test motor assembly 2 is loaded to the accompanying test gearbox 10 through the torque meter 2 4, the universal coupling 2 6 and the input shaft assembly 2 8.

[0040] After the main test gearbox 9 is finished, it can exchange roles with the companion test gearbox 10, so that both gearboxes can complete the deceleration loading test. The main test motor assembly 1 and the companion test motor assembly 2 can also exchange functions, that is, the two exchange driving or loading functions according to the main test or companion test role of the connected gearbox. When the main test gearbox 9 is finished and exchanges roles with the companion test gearbox 10, the main test motor assembly 1 can have the loading function, and the companion test motor assembly 2 can have the driving function.

[0041] The torque meter 1 has flanges on both sides, and the flanges on both sides of the torque meter 1 are respectively connected to the main test motor assembly 1 and the universal coupling 1 5, which can monitor and feedback the torque and speed of the input shaft of the main test gearbox 9 in real time, so as to obtain the input force and energy parameters of the gearbox required for the test; the universal coupling 1 5 can flexibly connect the torque meter 1 and the input shaft assembly 7 to eliminate the vibration caused by the relative offset of the rotating shafts of the two components. The torque meter 2 4 has flanges on both sides, and the flanges on both sides of the torque meter 2 4 are respectively connected to the accompanying test motor assembly 2 and the universal coupling 2 6, which can monitor and feedback the torque and speed of the input shaft of the accompanying test gearbox 10 in real time, so as to obtain the output force and energy parameters of the gearbox required for the test; the universal coupling 2 6 has the same function as the universal coupling 1 5, and can eliminate the vibration between the torque meter 2 4 and the input shaft assembly 2 8.

[0042] The input shaft assembly 1 7 and the input shaft assembly 2 8 have the same structure. The connection mode between the input shaft assembly 1 7 and the main test gearbox 9 and the universal coupling 1 5 is the same as the connection mode between the input shaft assembly 2 8 and the accompanying test gearbox 10 and the universal coupling 2 6.

[0043] like Figure 3 As shown, the input shaft assembly 7 is composed of a spline shaft 7.1, a spline sleeve 7.2, a bearing seat 7.3, a bearing 7.4, an oil seal 7.5, a pressure cover 7.6, bolts, etc.; except for the bolts and other accessories, the remaining parts of the input shaft assembly 7 are coaxial with the main test gearbox 9, the universal coupling 5, the torque meter 3 and the main test motor assembly 1. One end of the outer spline of the spline shaft 7.1 is connected to the inner spline 9.1 of the main test gearbox 9, and the other end is connected to the inner spline of the spline sleeve 7.2; the spline shaft 7.1 and the spline sleeve 7.2 are designed in a split manner, which is more flexible and less impactful, thereby more effectively protecting the inner spline 9.1 of the main test gearbox 9; the flange of the spline sleeve 7.2 is directly connected to the flange of the universal coupling 5, eliminating the cylindrical shaft head and half coupling of the conventional structure, making the connection more convenient and reliable; the outer circle of the spline sleeve 7.2 is fixed in the bearing seat 7.3 through the bearing 7.4; the flange of the bearing seat 7.3 is engaged with the end face of the main test gearbox 9; the oil seal 7.5 is installed inside the pressure cover 7.6, and the pressure cover 7.6 is fixed to the end face of the bearing seat 7.3. The bearings and splines of the input shaft assembly 7 are lubricated with dry oil.

[0044] The input shaft assembly 28 is composed of a spline shaft 1, a spline sleeve 1, a bearing seat 3, a bearing 1, an oil seal 1, a gland 1, bolts, etc. Except for the bolts and other accessories, the other parts of the input shaft assembly 28 are coaxial with the test gearbox 10, the universal coupling 26, the torque meter 24 and the test motor assembly 2. One end of the external spline of the spline shaft 1 is connected to the internal spline of the test gearbox 10, and the other end is connected to the internal spline of the spline sleeve 1; the spline shaft 1 and the spline sleeve 1 are designed to be split, which is more flexible and less impactful, thereby more effectively protecting the internal spline of the test gearbox 10; the flange of the spline sleeve 1 is directly connected to the flange of the universal coupling 26, eliminating the cylindrical shaft head and half coupling of the conventional structure, and the connection is more convenient and reliable; the outer circle of the spline sleeve 1 is fixed in the bearing seat 3 through the bearing 1, and the flange of the bearing seat 3 is engaged with the end face of the test gearbox 10, the oil seal 1 is installed inside the gland 1, and the gland 1 is fixed to the end face of the bearing seat 3. The bearings and splines of the input shaft assembly 2 8 are lubricated with dry oil.

[0045] like Figure 1 , Figure 4 and Figure 5 As shown, the housing assembly 11 includes a housing 11.1, a bolt group 11.2, an adjustment pad group 11.3, etc. Flange grooves 11.1.1 are provided on both sides of the housing 11.1, and ribs are also provided on both sides of the housing 11.1. The flange grooves 11.1.1 and ribs on both sides are rotationally symmetrical about the vertical center line X. The flange groove 11.1.1 is used to install the flanges of two gearboxes and two bearing seat assemblies (the flanges of the main test gearbox 9 and the bearing seat assembly 13 are both installed in the right flange groove 11.1.1, and the flanges of the companion test gearbox 10 and the bearing seat assembly 1 12 are both installed in the left flange groove 11.1.1). The flanges of the two gearboxes and the two bearing seat assemblies are connected to the housing 11.1 through the bolt group 11.2. The flange groove 11.1.1 is wider than the installed flange, and an adjustment gasket group 11.3 is set in each gap between the flange groove 11.1.1 and the flange (the gap refers to the gap between the outer edge of the flange and the inner wall of the flange groove 11.1.1). The entire adjustment gasket group 11.3 is composed of a series of gaskets of different thicknesses (the thickness of multiple gaskets in the same group of adjustment gasket groups 11.3 can be different); the total thickness of the adjustment gasket group 11.3 is determined as needed at different positions to adjust the position of each flange. The center line of the two gearboxes will also change with the change of the corresponding flange position, thereby adjusting the meshing of the two open output gears. The box body 11.1 is open and communicated with the outside world. The two open output gears are lubricated with dry oil, and the dry oil can be added in time. Figure 4 As shown, the housing 11.1 is provided with two connected through holes, and the two open output gears are respectively installed in the two through holes, and the two through holes are connected to form a transverse 8-shaped through hole. The 8-shaped through hole runs through the flange grooves 11.1.1 on both sides.

[0046] The structure of the bearing seat assembly 1 12 is the same as that of the bearing seat assembly 2 13. The connection mode between the bearing seat assembly 1 12 and the main test gearbox 9 and the housing 11.1 is the same as the connection mode between the bearing seat assembly 2 13 and the accompanying test gearbox 10 and the housing 11.1.

[0047] like Figure 6 As shown, the bearing seat assembly 12 includes a bearing seat 2 12.1, an end cover 12.2, bolts, etc. The bearing seat 2 12.1 is used to fix the outer bearing 9.2 of the open output gear of the main test gearbox 9, and the bearing seat 2 12.1 is fixed to the box body 11.1 by a bolt group 11.2; the end cover 12.2 is fixed to the end face of the bearing seat 2 12.1, and the outer bearing 9.2 of the open output gear of the main test gearbox 9 is lubricated with dry oil.

[0048] The bearing seat assembly 2 13 includes a bearing seat 4, an end cover 1, bolts, etc. The outer bearing 1 of the open output gear of the test gearbox 10 is fixed in the bearing seat 4, the bearing seat 4 is fixed to the box body 11.1 through a bolt group 11.2, and the end cover 1 is fixed to the end face of the bearing seat 4. The outer bearing 1 of the open output gear of the test gearbox 10 is lubricated with dry oil.

[0049] Working method of the present invention: The main test motor assembly 1 consumes electrical energy to provide kinetic energy to the device; the kinetic energy is transmitted to the main test gearbox 9 through the torque meter 3, the universal coupling 5, the input shaft assembly 7 and other components, and the kinetic energy is transmitted to the accompanying test gearbox 10 through the meshing of the open output gears at the ends of the two gearboxes. The accompanying test gearbox 10 can restore the reduced speed of the main test gearbox 9 to the original value; the kinetic energy is transmitted to the accompanying test motor assembly 2 through the input shaft assembly 2 8, the universal coupling 2 6, the torque meter 2 4 and other components, and the accompanying test motor assembly 2 converts the kinetic energy into electrical energy to realize an energy closed loop.

[0050] The present invention requires two identical gearboxes to be tested simultaneously, one driven as the main tester and the other loaded as the companion tester, and then the two exchange roles. This type of gearbox cleverly meshes the originally inaccessible open output gears directly by making tooling such as outer flanges to transmit torque. The torque meters on both sides respectively feedback the input and output force parameters in real time, thereby completing various tests of the gearbox.

[0051] The present invention can realize the meshing torque transmission of the open output gears of the gear boxes of the two lifting units without arranging an idler wheel, has a lower test cost, and is more conducive to testing the actual efficiency of the gear box.

[0052] The present invention can solve the problem that the open output gears of the two lifting unit gearboxes cannot directly mesh and transmit torque during the towing test, so that the gearboxes can be independently loaded on a conventional test bench and the reliability of the gearboxes can be improved. By cleverly arranging the two gearboxes to be tested, the direct meshing and torque transmission of the two open output gears is achieved, and no related parts such as idler wheels are added. The box body is designed in an integrated manner, the structure is simple, and it is easy to produce.

[0053] The present invention enables the gearbox to be independently subjected to loading tests on a conventional test bench, including fatigue tests, static load tests, etc., and can simulate actual working conditions, inspect temperature, vibration, lubrication, sealing, gear meshing and other items, and improve reliability and safety. The prior art is more inclined to measure the performance of the meshing between the open output gear and the rack of the gearbox and the static load test of the gearbox, and cannot simulate the long-term fatigue loading test inside the gearbox.

[0054] The invention is suitable for the lifting unit gearbox products of offshore drilling platforms, etc. The invention realizes the conventional back-to-back installation and loading of two gearboxes, and has advanced technology.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gearbox test device for a seawater platform lifting unit, characterized in that: include: A main test motor assembly (1), an accompanying test motor assembly (2), a main test gearbox (9), an accompanying test gearbox (10), a housing assembly (11), a first transmission mechanism and a second transmission mechanism, wherein the output end of the main test motor assembly (1) is connected to the first transmission mechanism, and the first transmission mechanism is connected to the main test gearbox (9); the output end of the accompanying test motor assembly (2) is connected to the second transmission mechanism, and the second transmission mechanism is connected to the accompanying test gearbox (10); The main test motor assembly (1) and the first transmission mechanism are located on one side of the housing assembly (11), the accompanying test motor assembly (2) and the second transmission mechanism are located on the other side of the housing assembly (11), the main test gearbox (9) and the accompanying test gearbox (10) are both connected to the housing assembly (11), and the open output gear of the main test gearbox (9) is meshedly connected with the open output gear of the accompanying test gearbox (10).

2. The seawater platform lifting unit gearbox testing device according to claim 1, characterized in that: It also includes a bearing seat assembly 1 (12) and a bearing seat assembly 2 (13), the housing assembly (11) includes a housing (11.1), the housing (11.1) is mounted on a test bench, the bearing seat assembly 1 (12) and the bearing seat assembly 2 (13) are respectively embedded on two sides of the housing (11.1), the bearing seat assembly 1 (12) is on the same side as the companion test gearbox (10), and the bearing seat assembly 2 (13) is on the same side as the main test gearbox (9); The main test gearbox (9) and the accompanying test gearbox (10) are respectively embedded on both sides of the box body (11.1) through flanges, and are arranged in rotational symmetry with respect to the center line of the box body (11.1) in the vertical direction; The open output gears of the main test gearbox (9) and the accompanying test gearbox (10) both extend into the housing (11.1) and mesh with each other to transmit torque; the outer bearing (9.2) of the open output gear of the main test gearbox (9) is inserted into the inner hole of the bearing seat assembly 1 (12), and the outer bearing 1 of the open output gear of the accompanying test gearbox (10) is inserted into the inner hole of the bearing seat assembly 2 (13).

3. The gearbox test device for the seawater platform lifting unit according to claim 1, characterized in that: The first transmission mechanism comprises a torque meter (3), a universal coupling (5) and an input shaft assembly (7); two sides of the torque meter (3) are respectively connected to the main test motor assembly (1) and the universal coupling (5); the universal coupling (5) is connected to one side of the input shaft assembly (7); and the other side of the input shaft assembly (7) is connected to the main test gear box (9).

4. The seawater platform lifting unit gearbox testing device according to claim 1, characterized in that: The second transmission mechanism comprises a torque meter 2 (4), a universal coupling 2 (6) and an input shaft assembly 2 (8), the two sides of the torque meter 2 (4) are respectively connected to the accompanying test motor assembly (2) and the universal coupling 2 (6), the universal coupling 2 (6) is connected to one side of the input shaft assembly 2 (8), and the other side of the input shaft assembly 2 (8) is connected to the accompanying test gearbox (10).

5. The seawater platform lifting unit gearbox testing device according to claim 3, characterized in that: The input shaft assembly (7) comprises a spline shaft (7.1), a spline sleeve (7.2), a bearing seat (7.3), a bearing (7.4), an oil seal (7.5) and a pressure cover (7.6); one end of the external spline of the spline shaft (7.1) is connected to the internal spline (9.1) of the main test gear box (9), and the other end is connected to the internal spline of the spline sleeve (7.2); the flange of the spline sleeve (7.2) is connected to the flange of the universal coupling (5); the outer circle of the spline sleeve (7.2) is fixed in the bearing seat (7.3) through the bearing (7.4); the flange of the bearing seat (7.3) is engaged with the end face of the main test gear box (9); the oil seal (7.5) is installed inside the pressure cover (7.6); and the pressure cover (7.6) is fixed to the end face of the bearing seat (7.3).

6. The seawater platform lifting unit gearbox testing device according to claim 4, characterized in that: The input shaft assembly 2 (8) has the same structure as the input shaft assembly 1 (7) of the first transmission mechanism, comprising a spline shaft 1, a spline sleeve 1, a bearing seat 3, a bearing 1, an oil seal 1 and a pressure cover 1, one end of the external spline of the spline shaft 1 being connected to the internal spline of the companion test gear box (10), and the other end being connected to the internal spline of the spline sleeve 1; the flange of the spline sleeve 1 being connected to the flange of the universal coupling 2 (6), the outer circle of the spline sleeve 1 being fixed in the bearing seat 3 through the bearing 1, the flange of the bearing seat 3 being engaged with the end face of the companion test gear box (10), the oil seal 1 being installed inside the pressure cover 1, and the pressure cover 1 being fixed to the end face of the bearing seat 3.

7. The gearbox testing device for the seawater platform lifting unit according to claim 2, characterized in that: The housing assembly (11) further comprises an adjustment gasket assembly (11.3). Flange grooves (11.1.1) are provided on both sides of the housing (11.1). The flange grooves (11.1.1) on both sides are rotationally symmetrical about a center line in a vertical direction. The flange grooves (11.1.1) on both sides are respectively used to install flanges of a main test gearbox (9), a companion test gearbox (10), a bearing seat assembly one (12) and a bearing seat assembly two (13). An adjustment gasket assembly (11.3) is provided in the gap between the flange grooves (11.1.1) and the flanges.

8. The gearbox testing device for the seawater platform lifting unit according to claim 2, characterized in that: The bearing seat assembly 1 (12) comprises a bearing seat 2 (12.1) and an end cover (12.2); the outer bearing (9.2) of the open output gear of the main test gear box (9) is fixed in the bearing seat 2 (12.1); the bearing seat 2 (12.1) is fixed to the box body (11.1) by a bolt group (11.2); and the end cover (12.2) is fixed to the end face of the bearing seat 2 (12.1).

9. The gearbox testing device for the seawater platform lifting unit according to claim 8, characterized in that: The bearing seat assembly 2 (13) has the same structure as the bearing seat assembly 1 (12), including a bearing seat 4 and an end cover 1. The outer bearing 1 of the open output gear of the companion gear box (10) is fixed in the bearing seat 4. The bearing seat 4 is fixed to the box body (11.1) by a bolt group (11.2). The end cover 1 is fixed to the end face of the bearing seat 4.

10. The gearbox testing device for the seawater platform lifting unit according to claim 2, characterized in that: Rib plates are provided on both sides of the box body (11.1), and the rib plates on both sides are rotationally symmetrical about a center line in a vertical direction.

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