Mounting table for testing the oil film characteristics of the flow distribution pair

Abstract

The present invention provides an installation platform for testing the oil film characteristics of a flow distribution pair, comprising: a sensor arrangement plate adapted to be connected to a device to be tested, an installation portion is provided on a first surface of the sensor arrangement plate, the installation portion is adapted to cooperate with a flow distribution disc, and a first oil passage groove adapted to the oil distribution window of the flow distribution disc is provided on the installation portion; a plurality of sensor installation holes are provided on the sensor arrangement plate and are located at the installation portion; a wiring groove is provided on a second surface of the sensor arrangement plate opposite to the first surface, the wiring groove communicates with each of the plurality of sensor installation holes, and the wiring groove extends to the side of the sensor arrangement plate to lead out a wire; a pressing plate is provided on the second surface of the sensor arrangement plate, and a second oil passage groove communicating with the first oil passage groove is provided on the pressing plate. The technical solution of the present invention solves the defect that the test bench for the oil film characteristics test of the flow distribution pair in the prior art has great limitations on the setting of sensor installation holes, and at the same time has the characteristic of accurate measurement of the oil film thickness.

Description

Technical Field

[0001] The present invention relates to the technical field of oil film characteristic test equipment for the valve plate pair of plunger pumps / motors, and particularly relates to a mounting table for testing the oil film characteristics of a valve plate pair. Background Art

[0002] The oil film characteristic test of the valve plate pair is used to test the oil film state when an axial piston pump / motor is working. Among them, the test benches used in the experiments generally adopt a model or simulation structure. Among them, the model test bench adds temperature and displacement sensors on the basis of referring to the torque test of the motor, which are respectively used to measure the oil film temperature field and thickness field. Since it basically does not modify the actual structure of the pump / motor, it can more truly reflect the actual situation of the oil film when the pump / motor is working.

[0003] Most of the existing model test benches realize the arrangement and wiring of sensors by machining mounting holes on the end cover, and then potting epoxy resin in the mounting holes for fixation and sealing. However, the above test bench has the following problems: on the one hand, the end cover of the plunger pump / motor is relatively thick, which makes the length of the mounting hole relatively large. When the aspect ratio of the mounting hole is large, it is easy to cause problems such as incomplete potting of epoxy resin and the appearance of bubbles. On the other hand, the flow channels on the end cover of the plunger pump / motor are not straight, which limits the machining of the mounting holes and the number of mounting holes, and ultimately results in a limited measurement range.

[0004] In addition, as an important index for evaluating the lubrication ability of the friction pair, the thickness of the oil film. According to the principle that three points determine a plane, the existing oil film characteristic measurement device for the valve plate pair indirectly measures the oil film thickness field by using three displacement sensors. However, in the case of a huge external force on one side, the valve plate will also show a "warping" phenomenon. Therefore, the oil film thickness field is actually not a plane, resulting in inaccurate measurement of the oil film thickness in the prior art. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the test bench for the oil film characteristic test of the valve plate pair in the prior art has great limitations on setting sensor mounting holes, so as to provide a mounting table for testing the oil film characteristics of the valve plate pair.

[0006] To solve the above problems, the present invention provides a mounting table for testing the oil film characteristics of a flow distribution pair, comprising: a sensor arrangement plate adapted to be connected to a device to be tested. An installation portion is provided on the first surface of the sensor arrangement plate, and the installation portion is adapted to cooperate with a flow distribution disk. A first oil passage groove adapted to be aligned with the oil distribution window of the flow distribution disk is provided on the installation portion; a plurality of sensor mounting holes are provided on the sensor arrangement plate and located at the installation portion; a wiring groove is provided on the second surface of the sensor arrangement plate opposite to the first surface, and the wiring groove communicates with all the plurality of sensor mounting holes and extends to the side of the sensor arrangement plate to lead out wires; a pressing plate is provided on the second surface of the sensor arrangement plate, and a second oil passage groove communicating with the first oil passage groove is provided on the pressing plate.

[0007] Optionally, the plurality of sensor mounting holes include a plurality of temperature sensor mounting holes, and the plurality of temperature sensor mounting holes are arranged around the first oil passage groove.

[0008] Optionally, the first oil passage groove is a long groove, and a reinforcing protrusion is provided at the middle of the first oil passage groove corresponding to the position of the temperature sensor mounting hole.

[0009] Optionally, the plurality of sensor mounting holes include a plurality of displacement sensor mounting holes, and the plurality of displacement sensor mounting holes are provided at the outer edge of the installation portion and are arranged at intervals along the circumferential direction of the installation portion.

[0010] Optionally, the number of displacement sensor mounting holes is more than three.

[0011] Optionally, a first sealing ring and a second sealing ring surrounding the first sealing ring are provided between the sensor arrangement plate and the pressing plate. A first annular groove and a second annular groove are provided on the surface of the sensor arrangement plate and / or the pressing plate. The first sealing ring is arranged in the first annular groove, and the second sealing ring is arranged in the second annular groove. Among them, the first oil passage groove, the second oil passage groove and the temperature sensor mounting holes are all located between the first sealing ring and the second sealing ring.

[0012] Optionally, the installation portion is an annular protrusion protruding from the first surface, and a bearing is adapted to be installed in the middle of the annular protrusion. The mounting table further includes a positioning structure adapted to position the relative position between the annular protrusion and the flow distribution disk.

[0013] Optionally, a pressure relief groove is provided on the annular protrusion.

[0014] Optionally, connection holes are provided on the sensor arrangement plate, and the mounting table further includes a first fastener, and the first fastener is connected to the device to be tested after passing through the connection holes.

[0015] Optionally, the sensor arrangement plate and the pressing plate are detachably connected together by a second fastener.

[0016] The present invention has the following advantages:

[0017] With the technical solution of the present invention, the sensor is arranged in the sensor mounting hole, and its wire is led out from the wire groove, realizing a wire routing method of leading the wire out from the side, thereby avoiding an excessive aspect ratio of the sensor mounting hole. At the same time, the mounting table is divided into two parts, namely a sensor layout board and a pressing plate, so that the first oil passing groove can be a linear groove structure, avoiding affecting the setting position of the sensor mounting hole. Therefore, the technical solution of the present invention solves the defect that the test bench for the oil film characteristic test of the flow distribution pair in the prior art has great limitations on the setting of the sensor mounting hole.

[0018] At the same time, the present invention provides more than three displacement sensor setting holes (preferably six). By arranging a plurality of displacement sensors on the high-pressure side and the low-pressure side respectively, the local oil film morphologies on both sides are measured respectively, so as to correct the measurement result of the oil film thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Shows an exploded schematic view of the mounting table for the oil film characteristic test of the flow distribution pair of the present invention;

[0021] Figure 2 Shows Figure 1 The enlarged schematic view at position A in

[0022] Figure 3 Shows Figure 1 The enlarged schematic view at position B in

[0023] Figure 4 Shows Figure 1 The schematic view of the first surface perspective of the sensor layout board of the mounting table in

[0024] Figure 5 Shows Figure 4 The enlarged schematic view at position C in

[0025] Figure 6 Shows Figure 1 The schematic view of the second surface perspective of the sensor layout board of the mounting table in

[0026] Figure 7 Shows Figure 1 The sectional view of the mounting table in ; and

[0027] Figure 8 shows Figure 7 an enlarged schematic view at position D in

[0028] Explanation of reference numerals:

[0029] 10. Sensor arrangement board; 11. First surface; 12. Second surface; 13. Connection hole; 20. Mounting part; 21. First oil passage groove; 211. Reinforcing convex part; 22. Pressure relief groove; 30. Sensor mounting hole; 31. Temperature sensor mounting hole; 32. Displacement sensor mounting hole; 40. Wiring groove; 50. Pressure plate; 51. Second oil passage groove; 60. First sealing ring; 70. Second sealing ring; 80. First annular groove; 90. Second annular groove; 100. Flow distribution plate; 101. Oil distribution window; 110. Positioning structure; 120. First fastener; 130. Second fastener. Detailed implementation manners

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mount", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Such as Figures 1 to 3 andFigure 6 As shown, the mounting table for testing the oil film characteristics of the flow distribution pair in this embodiment includes a sensor layout board 10 and a pressing plate 50. These two structures will be introduced in detail below.

[0035] The sensor layout board 10 is adapted to be connected to the device to be tested. Among them, the above-mentioned device to be tested refers to a piston pump or a piston motor (hydraulic motor). Further, the sensor layout board 10 is connected to the outer shells of the above two devices and is connected at the end, that is, in the position replacing the end cover. An installation portion 20 is provided on the first surface 11 of the sensor layout board 10. The installation portion 20 is adapted to cooperate with the flow distribution disc 100, and a first oil passage groove 21 adapted to the oil distribution window 101 of the flow distribution disc 100 is provided on the installation portion 20. Specifically, the above-mentioned first surface 11 refers to the surface of the sensor layout board 10 facing the device to be tested, that is, the Figure 1 right-facing surface of the sensor layout board 10 in the figure. The flow distribution disc 100 is installed on the above-mentioned installation portion 20. At the same time, after oil supply, an oil film is formed between the flow distribution disc and the installation portion 20. By arranging various sensors on the sensor layout board 10, various parameters of the oil film can be detected.

[0036] Further, a plurality of sensor mounting holes 30 are provided on the sensor layout board 10, and a wiring groove is provided on the second surface 12 of the sensor layout board 10 opposite to the first surface 11. Specifically, the sensor mounting holes 30 are located on the installation portion 20, so that various sensors can test the parameters of the oil film. The sensor mounting holes 30 are through holes, that is, they penetrate through the first surface 11 and the second surface 12 of the sensor layout board 10. The wiring groove 40 is communicated with a plurality of sensor mounting holes 30, and the wiring groove 40 extends to the side of the sensor layout board 10 to lead out the wires. At the same time, epoxy resin needs to be poured into the sensor mounting holes 30 for sealing. As Figure 6 can be seen, one end of the wiring groove 40 extends to the side of the sensor layout board 10, and the other end forms a plurality of bifurcations. The plurality of bifurcations are respectively communicated with a plurality of sensor mounting holes 30. Thus, the connecting wires of the plurality of sensors can converge through the bifurcations and finally be led out from the side of the sensor layout board 10 at the second end of the wiring groove 40. Of course, those skilled in the art can understand that the wiring groove 40 can be one or multiple. For example, in this embodiment, as Figure 6 can be seen, the wiring groove 40 is provided with three. The bifurcations of each wiring groove 40 are communicated with some of the sensor mounting holes 30 among the plurality of sensor mounting holes 30.

[0037] The pressing plate 50 is arranged on the second surface of the sensor arrangement plate 10, and a second oil passage groove 51 communicating with the first oil passage groove 21 is arranged on the pressing plate 50. Specifically, the pressing plate 50 is pressed against the second surface of the sensor arrangement plate 10. Further, the number and shape of the first oil passage grooves 21 are adapted to the oil distribution windows 101 on the flow distribution plate 100. In this embodiment, the number of the first oil passage grooves 21 is six. The number of the second oil passage grooves 51 is two, corresponding to the oil inlet and oil discharge of the plunger. Each second oil passage groove 51 communicates with three first oil passage grooves 21. Further, from Figure 7 It can be seen that the first oil passage groove 21 is a linear groove structure, and the second oil passage groove 51 is an "L" - shaped structure, that is, the hydraulic oil enters from both sides (along the radial direction) of the pressing plate 50. Of course, in some embodiments not shown, the hydraulic oil can also enter from the axial direction of the pressing plate 50.

[0038] Based on the above structure, by using the technical solution of this embodiment, the sensor is arranged in the sensor mounting hole 30, and its wire is led out from the wire routing groove 40, realizing the wire routing method of leading out from the side, thereby avoiding the aspect ratio of the sensor mounting hole 30 from being too large. At the same time, the mounting table is divided into two parts, namely the sensor arrangement plate 10 and the pressing plate 50, so that the first oil passage groove 21 can be a linear groove structure, avoiding affecting the setting position of the sensor mounting hole 30. Therefore, the technical solution of this embodiment solves the defect that the test bench for the oil film characteristic test of the existing flow - matching pair has great restrictions on the setting of the sensor mounting hole.

[0039] As Figure 4 shown, in the technical solution of this embodiment, the multiple sensor mounting holes 30 include multiple temperature sensor mounting holes 31, and the multiple temperature sensor mounting holes 31 are arranged around the first oil passage groove 21. Specifically, since the number of the first oil passage grooves 21 is six, the temperature sensor mounting holes 31 are arranged around the outside of each first oil passage groove 21. From Figure 4 It can be seen that one temperature sensor mounting hole 31 is arranged on each side of the middle part of the first oil passage groove 21, and two temperature sensor mounting holes 31 are arranged at each end.

[0040] As Figure 5 shown, in the technical solution of this embodiment, the first oil passage groove 21 is a long groove, and a reinforcing protrusion 211 is arranged at the middle part of the first oil passage groove 21 corresponding to the position of the temperature sensor mounting hole 31. Specifically, since the temperature sensor mounting hole 31 is arranged relatively close to the first oil passage groove 21, the hole wall of the temperature sensor mounting hole 31 on the side corresponding to the first oil passage groove 21 is relatively thin. In order to ensure the structural stability of the temperature sensor mounting hole 31 after the action of high - pressure oil, a reinforcing protrusion 211 is added in the middle part of the first oil passage groove 21 for reinforcement. From Figure 5It can be seen that after the reinforcing convex portion 211 is provided on the first oil passing groove 21, the overall hole wall of the temperature sensor mounting hole 31 is relatively thick, thereby ensuring the structural stability. The reinforcing convex portion 211 is a convex rounded corner structure provided on the inner side wall of the middle part of the first oil passing groove 21. Further, reinforcing convex portions 211 are provided on the inner side walls on both sides of the middle part of the first oil passing groove 21.

[0041] As Figure 2 , Figure 4 and Figure 5 shown, in the technical solution of this embodiment, the plurality of sensor mounting holes 30 include a plurality of displacement sensor mounting holes 32. The plurality of displacement sensor mounting holes 32 are provided at the outer edge of the mounting portion 20, and the plurality of displacement sensor mounting holes 32 are arranged at intervals along the circumferential direction of the mounting portion 20. Specifically, the displacement sensor is used to measure the thickness of the oil film. It can be seen that Figure 4 the plurality of displacement sensor mounting holes 32 are arranged at intervals along the circumferential direction of the mounting portion 20, and the plurality of displacement sensor mounting holes 32 surround the temperature sensor mounting hole 31 on the outside.

[0042] As Figure 4 shown, in the technical solution of this embodiment, the number of displacement sensor mounting holes 32 is more than three. Further, in this embodiment, the number of displacement sensor mounting holes 32 is set to six. The six displacement sensor mounting holes 32 are evenly arranged at intervals along the circumferential direction, and the included angle between adjacent displacement sensor mounting holes 32 is 60°.

[0043] Specifically, when the plunger pump / motor actually works, due to the imbalance of the pressures on both sides of the suction and discharge oil areas and the combined action of the oil film separation force, a wedge-shaped included angle finally exists between the valve plate and the cylinder block, and the oil film exists therein. The thickness of the oil film is an important index for evaluating the lubrication ability of the friction pair. According to the principle that three points determine a plane, the prior art measuring device for the oil film characteristics of the valve plate pair indirectly measures the oil film thickness field by using three displacement sensors. However, in the case of a huge external force on one side, the valve plate will also show a "warpage" phenomenon. Therefore, the oil film thickness field is actually not a plane, resulting in inaccurate measurement of the oil film thickness in the prior art. For the problem of inaccurate measurement of the oil film morphology, in this embodiment, displacement sensor groups (not less than 3 on each side) will be arranged on the high-pressure side and the low-pressure side respectively to measure the local oil film morphologies on both sides respectively, so as to correct the measurement result of the oil film thickness.

[0044] It should be noted that the above displacement sensor can be a resistive displacement sensor, a capacitive displacement sensor, a wire-pulling displacement sensor, etc.

[0045] As Figure 1 , Figure 3 , Figure 7 andFigure 8 As shown, in the technical solution of this embodiment, a first sealing ring 60 and a second sealing ring 70 surrounding the first sealing ring 60 are provided between the sensor arrangement plate 10 and the pressing plate 50. A first annular groove 80 and a second annular groove 90 are provided on the surface of the pressing plate 50. The first sealing ring 60 is arranged in the first annular groove 80, and the second sealing ring 70 is arranged in the second annular groove 90. Among them, the first oil passage groove 21, the second oil passage groove 51, and the temperature sensor mounting hole 31 are all located between the first sealing ring 60 and the second sealing ring 70. Specifically, after the hydraulic oil is injected, it enters the distribution plate 100 through the second oil passage groove 51 and the first oil passage groove 21 in sequence. An annular sealing area is formed between the first sealing ring 60 and the second sealing ring 70, thereby preventing leakage. Further, the above-mentioned temperature sensor mounting hole 31 is also located in the annular sealing area surrounded by the first sealing ring 60 and the second sealing ring 70. The above-mentioned first annular groove 80 and second annular groove 90 are provided on the surface of the pressing plate 50 facing the sensor arrangement plate 10. Of course, the above-mentioned first annular groove 80 and second annular groove 90 can also be provided on the second surface 12 of the sensor arrangement plate 10, or the first annular groove 80 and second annular groove 90 are provided on the opposite surfaces of the sensor arrangement plate 10 and the pressing plate 50.

[0046] As Figure 1 and Figure 2 shown, in the technical solution of this embodiment, the mounting portion 20 is an annular protrusion protruding from the first surface 11. The middle part of the annular protrusion is suitable for mounting a bearing. The mounting table further includes a positioning structure 110, and the positioning structure 110 is suitable for positioning the relative position between the annular protrusion and the distribution plate 100. Specifically, the surface shape of the annular protrusion is adapted to the shape of the distribution plate 100. The distribution plate 100 is placed on the annular protrusion. The above-mentioned positioning structure 110 is a positioning pin, and the positioning pin can lock the relative position between the distribution plate 100 and the annular protrusion. The middle part of the annular protrusion is used to arrange a bearing, and the bearing is connected to the main shaft of the piston pump / motor.

[0047] As Figure 4 shown, in the technical solution of this embodiment, a pressure relief groove 22 is provided on the annular protrusion. From Figure 4 it can be seen that there are two pressure relief grooves 22. Among them, the upper pressure relief groove 22 is an external pressure relief groove, and the lower pressure relief groove 22 is an internal pressure relief groove.

[0048] As Figure 1As shown, in the technical solution of this embodiment, connection holes 13 are provided on the sensor arrangement plate 10. The mounting table further includes a first fastener 120, and the first fastener 120 passes through the connection holes 13 and then connects to the device to be tested. Specifically, the first fastener 120 is a mounting screw, and the mounting screw passes through the connection holes 13 and then connects to the housing of the piston pump / motor. Further, there are four connection holes 13, and the four connection holes 13 are respectively located at the four corners of the sensor arrangement plate 10. Correspondingly, there are also four mounting screws.

[0049] As Figure 1 shown, in the technical solution of this embodiment, the sensor arrangement plate 10 and the pressure plate 50 are detachably connected together by a second fastener 130. Specifically, the central part between the sensor arrangement plate 10 and the pressure plate 50 is connected together by a central compression screw, and the outer edge parts of the two are connected by outer connection screws. The central compression screw and the outer connection screws together constitute the above-mentioned second fastener.

[0050] According to the above description, the mounting table for the oil film characteristic test of the flow distribution pair in this embodiment has the following characteristics:

[0051] The purpose of this embodiment is to provide a mounting table for the oil film characteristic of the flow distribution pair. By this method, a combined end cover is formed, and the combined end cover is composed of two parts: the sensor arrangement plate and the pressure plate 50. Among them, the sensor arrangement plate 10 is relatively thin, and the position of the first oil passage groove 21 on it is basically the same as the position on the oil distribution window 101 of the flow distribution plate 100, avoiding the interference caused by the flow channel. The cable is also changed from being led out in the vertical plane to being led out on the side, thus solving the problems of few available sensor arrangements and a large aspect ratio of the mounting holes. For the problem of inaccurate measurement of the oil film morphology, displacement sensor groups (not less than 3 on each side) are respectively arranged on the high-pressure side and the low-pressure side to measure the local oil film morphology on both sides respectively, so as to correct the measurement result of the oil film thickness. For the temperature field of the oil film of the flow distribution pair, an indirect measurement method is used, that is, a temperature sensor is used to measure the temperature near the surface of the flow distribution plate 100 instead of the oil film temperature.

[0052] Further, as Figure 7 and Figure 8 shown, this embodiment first simplifies the flow channels related to the valve on the general piston pump / motor end cover, leaving only two flow channels for the inlet and outlet, and the flow channels show a vertical connection method. As Figure 1As shown, the original entire end cover is divided into two parts: a sensor layout plate 10 and a pressing plate 50. These two parts are connected using central pressing screws and external connection screws, and two positioning pins are used to position them. In addition to pouring epoxy resin into the sensor mounting holes 30, a first sealing ring 60 and a second sealing ring 70 are also used to prevent leakage. The circumferential positioning between the distribution plate 100 and the mounting portion 20 is achieved through a bearing (for mounting the main shaft of the piston pump / motor) and distribution plate positioning pins. The entire sensor layout plate 10 is connected to the housing of the pump / motor using mounting screw plungers.

[0053] Furthermore, as Figures 1 to 5 described, the sensor layout plate 10 is designed with a first oil passage groove 21 on the mating mounting surface (the first surface 11) with the distribution plate 100, which has a position and size nearly the same as those of the oil distribution window 101 of the distribution plate 100. Around the first oil passage groove 21, temperature sensor mounting holes 31 (a total of thirty) are arranged. In order to ensure the structural stability of the temperature sensor mounting holes 31 after the action of high-pressure oil, a strengthening protrusion 211 is added in the middle part of the first oil passage groove 21 for reinforcement. The first surface 11 of the sensor layout plate 10 is also provided with basic structures such as an internal pressure relief groove, an external pressure relief groove, a bearing hole, and a positioning pin mounting hole for positioning and mounting in cooperation with the distribution plate 100. In addition, six displacement sensor mounting holes 32 are arranged, and the angular interval between each hole is 60°. The sensor layout plate 10 is designed with a sensor wiring groove 40 as Figure 6 shown on the sensor wiring surface (i.e., the second surface 12) to facilitate the bundling and management of sensor cables.

[0054] The mounting platform for testing the oil film characteristics of the flow distribution pair in this embodiment has the following advantages:

[0055] 1. There are no difficult-to-machine curved surfaces on the two main parts that make up the end cover. The structure is simple and does not require mold manufacturing like traditional end covers. It can be achieved only through machining.

[0056] 2. The end cover adopts a split design to expand the available test area on the distribution plate.

[0057] 3. This design modification scheme can be applied to the end covers of different models of piston pumps / motors, and has good versatility.

[0058] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. Installation platform for testing the oil film characteristics of a flow distribution pair, characterized in that Comprising: A sensor arrangement board (10), adapted to be connected to a device to be tested. An installation part (20) is provided on a first surface (11) of the sensor arrangement board (10). The installation part (20) is adapted to cooperate with a flow distribution plate (100). A first oil passage groove (21) adapted to the oil distribution window (101) of the flow distribution plate (100) is provided on the installation part (20). A plurality of sensor mounting holes (30) are provided on the sensor arrangement board (10) and are located at the installation part (20). A wire routing groove (40) is provided on a second surface (12) of the sensor arrangement board (10) opposite to the first surface (11). The wire routing groove (40) communicates with each of the plurality of sensor mounting holes (30), and the wire routing groove (40) extends to the side of the sensor arrangement board (10) to enable a wire to be led out. A pressing plate (50) is provided on the second surface of the sensor arrangement board (10). A second oil passage groove (51) communicating with the first oil passage groove (21) is provided on the pressing plate (50).

2. The mounting table according to claim 1, characterized in that, The plurality of sensor mounting holes (30) include a plurality of temperature sensor mounting holes (31). The plurality of temperature sensor mounting holes (31) are arranged around the first oil passage groove (21).

3. The mounting table according to claim 2, characterized in that, The first oil passage groove (21) is a long groove. A strengthening protrusion (211) is provided at a middle part of the first oil passage groove (21) and at a position corresponding to the temperature sensor mounting hole (31).

4. The mounting table according to claim 1, characterized in that, The plurality of sensor mounting holes (30) include a plurality of displacement sensor mounting holes (32). The plurality of displacement sensor mounting holes (32) are provided at an outer edge of the installation part (20), and the plurality of displacement sensor mounting holes (32) are arranged at intervals along the circumferential direction of the installation part (20).

5. The mounting table according to claim 4, characterized in that The number of the displacement sensor mounting holes (32) is three or more.

6. The mounting table according to claim 2, characterized in that, A first sealing ring (60) and a second sealing ring (70) surrounding the first sealing ring (60) are provided between the sensor arrangement board (10) and the pressing plate (50). A first annular groove (80) and a second annular groove (90) are provided on a surface of the sensor arrangement board (10) and / or the pressing plate (50). The first sealing ring (60) is arranged in the first annular groove (80), and the second sealing ring (70) is arranged in the second annular groove (90). Among them, the first oil passage groove (21), the second oil passage groove (51) and the temperature sensor mounting hole (31) are all located between the first sealing ring (60) and the second sealing ring (70).

7. The mounting table according to claim 1, characterized in that, The installation part (20) is an annular protrusion protruding from the first surface (11). A bearing is adapted to be installed in a middle part of the annular protrusion. The installation table further includes a positioning structure (110). The positioning structure (110) is adapted to position a relative position between the annular protrusion and the flow distribution plate (100).

8. The mounting table according to claim 7, wherein A pressure relief groove (22) is provided on the annular protrusion.

9. The mounting table according to claim 1, characterized in that, The sensor arrangement board (10) is provided with connection holes (13), and the mounting table further includes a first fastener (120). The first fastener (120) passes through the connection holes (13) and then is connected to the device to be tested.

10. The mounting table according to claim 1, characterized in that, The sensor arrangement board (10) and the pressing plate (50) are detachably connected together by a second fastener (130).

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