Lubricating parameter testing device for multi-row planetary speed change mechanism

Abstract

The invention belongs to the field of mechanical design, and particularly relates to a lubricating parameter testing device for a multi-row planetary speed change mechanism. Comprising a connecting flange, a speed change planet row lubricating oil way assembly, a clutch lubricating oil way assembly, an input oil way assembly, a speed reduction planet row lubricating oil way assembly, a coupling planet row lubricating oil way assembly, a transmission shaft, a flow partition measuring box body, a rotating pipeline pressure measuring device and a cable. According to the invention, a structure with lubricating oil ducts of a planetary transmission mechanism is extracted, and all the oil duct structures are connected by using taper sleeve structures, so that a 1: 1 lubrication prototype of the speed change mechanism is designed; a conductive slip ring is arranged at a shaft end, a high-precision pressure sensor is arranged on a planet carrier oil duct, a sensor threading hole is formed in a main shaft, and a sensor cable is connected into the conductive slip ring to achieve data acquisition; the partition plates are arranged in the box body to separate all transmission parts, and flow zoning measurement is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical design, and particularly relates to a lubrication parameter testing device for a multi-row planetary transmission mechanism, and more particularly to the measurement of the pressure and flow rate of the lubrication pipeline of a compact structure vehicle planetary gearbox. Background Art

[0002] Planetary transmission has the advantages of compact structure and uniform load bearing, and is widely used in vehicle gearboxes. The lubrication research of planetary transmission mechanisms mainly adopts theoretical analysis, experimental research and numerical simulation methods. The internal lubrication flow distribution and pressure distribution have always relied on numerical simulation calculations by commercial software, and it is difficult to verify the accuracy of the simulation results. In experimental research, on the one hand, the diameter of the internal lubricating oil pipeline of the transmission mechanism is generally small, and it is impossible to install a flow sensor. On the other hand, there is a rotation speed in the lubricating oil pipeline of the mechanism, and currently no researcher has effectively measured the internal pressure of the transmission mechanism under rotating conditions. The present invention proposes a testing device for lubrication parameters of a planetary transmission mechanism, which can effectively measure the distributed flow of each component of a complex transmission mechanism and the internal pressure of different pipelines, and provide an experimental scheme for the research of the lubrication characteristics of the transmission mechanism. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] The technical problem to be solved by the present invention is: how to provide a lubrication parameter testing device for a multi-row planetary transmission mechanism, which can measure parameters such as lubrication flow rate and lubricating oil pipeline pressure under different rotational speed conditions of a complex planetary transmission mechanism, and in particular can achieve the partition measurement of the lubrication flow rate of a transmission mechanism with multiple planetary rows and the pressure measurement of a rotating oil pipeline.

[0005] (2) Technical Solutions

[0006] To solve the above technical problems, the present invention provides a lubrication parameter testing device for a multi-row planetary transmission mechanism, and the lubrication parameter testing device for a multi-row planetary transmission mechanism includes:

[0007] Connecting flange 1, lubricating oil pipeline test prototype, flow rate partition measurement box 9, rotating pipeline pressure measurement device 10, lubricating oil outlet 12, oil return port 13, partition plate 15;

[0008] The lubricating oil pipeline test prototype is a structure body designed according to the 1:1 reduction of the oil pipeline structure of the measured planetary transmission mechanism, and includes a variable-speed planetary row lubricating oil pipeline assembly 2, a clutch lubricating oil pipeline assembly 5, an input oil passage assembly 4, a reduction planetary row lubricating oil pipeline assembly 6, a coupling planetary row lubricating oil pipeline assembly 7, a transmission shaft 3. Lubricating oil passage holes are arranged on each oil pipeline assembly and the transmission shaft 3, and the structural dimensions of the lubricating oil pipeline are consistent with those of the measured planetary transmission mechanism;

[0009] The connecting flange 1 is connected to the driving motor of the test bench to input the rotational speed to the lubricating oil circuit test prototype, and measure the lubrication parameters at different rotational speeds;

[0010] The flow rate partition measurement box body 9 is an outer contour box body, including a partition plate 15 arranged inside, a lubricating oil outlet 12 arranged on the side, and an oil return port 13 arranged at the bottom. The various oil passage components included in the lubricating oil circuit test prototype are partitioned by the partition plate 15, so that the oil at the outlets of the respective lubricating oil passages converges in partitions at the bottom of the flow rate partition measurement box body 9, avoiding the splashing of lubricating oil inside the box body, and being led out through the lubricating oil outlet 12 on the side or the oil return port 13 at the bottom for flow rate measurement;

[0011] The rotating pipeline pressure measurement device 10 includes a high-speed conductive slip ring 11, a sensor, and a cable 14 of the sensor. The sensor is arranged on the rotating oil passage and has the same rotational speed as the rotating part. The cable 14 is connected to the high-speed conductive slip ring 11 by means of perforating the rotating part, and the oil pressure data is collected through the high-speed conductive slip ring 11. The sensor, the cable 14, the perforating part, and the high-speed conductive slip ring 11 have the same rotational speed.

[0012] Among them, sensor cable holes are arranged on the transmission shaft 3 to introduce the cable 14 inside the flow rate partition measurement box body 9 into the high-speed conductive slip ring 11.

[0013] Among them, the partition plate 15 is designed in shapes according to the respective regions to be separated, including straight plates, inclined plates, stepped plates, and special-shaped plates.

[0014] Among them, the connection relationships of the parts involved in the variable speed planetary gear lubricating oil circuit assembly 2, the clutch lubricating oil circuit 5, the input oil passage assembly 4, the reduction planetary gear lubricating oil circuit assembly 6, and the coupling planetary gear lubricating oil circuit assembly 7 are the same as those of the planetary variable speed mechanism to be measured. When the driving motor inputs the rotational speed, the rotational speeds of the respective parts are the same as those of the planetary variable speed mechanism to be measured;

[0015] Among them, the parts not involving oil passages in the planetary variable speed mechanism to be measured are cancelled in the lubricating oil circuit test prototype to provide space for the arrangement of sensors.

[0016] Among them, the sensor is a pressure sensor, a flow rate sensor, or a temperature sensor.

[0017] Among them, the flow rate test methods based on the flow rate partition measurement box body 9 include a connection flow rate sensor measurement method, an internal oil gauge measurement method, and an external measuring cup measurement method.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention has the following several advantages:

[0020] (1) The lubricating flow rate of the transmission mechanism is partitioned by arranging a partition plate on the box body, and the real-time measurement of the lubricating flow rate is realized by arranging oil outlets on the side and bottom of each partition box body.

[0021] (2) By simplifying the original planetary speed change mechanism, extracting the structure containing the lubricating oil path, forming a lubricating oil path test prototype dedicated to lubrication parameter testing, canceling the parts without oil channels, and designing reasonable connection structures such as splines, taper sleeves, snap rings, etc., a lubricating oil path prototype design with a 1:1 ratio of rotational speed and oil channel structure parameters to the original planetary speed change mechanism is realized.

[0022] (3) By machining wire holes on the rotating parts, the cable layout of the rotating oil path sensor in the prototype is realized, and the data acquisition of the sensor is realized through a high-speed conductive slip ring.

[0023] (4) The capacity of the partition box body can be changed by adjusting the base height, box body width, etc. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the test prototype of the present invention example.

[0026] Figure 3 It is a schematic diagram of the wire holes on the transmission shaft of the present invention example.

[0027] In the figure: 1: connecting flange, 2: lubricating oil path assembly of the planetary gear set for speed change, 3: transmission shaft, 4: input oil path assembly, 5: lubricating oil path assembly of the clutch, 6: lubricating oil path assembly of the reduction planetary gear set, 7: lubricating oil path assembly of the coupling planetary gear set, 8: support component, 9: flow partition measurement box body, 10: rotating pipeline pressure measurement device, 11: high-speed conductive slip ring, 12: lubricating oil outlet, 13: oil return port, 14: cable, 15: partition plate, 16: flange in the middle section of the transmission shaft; a, b, e, f, i, j: wire holes, c, d, g, h: wire grooves. Detailed Embodiment

[0028] To make the purpose, content, and advantages of the present invention clearer, the following further describes in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments.

[0029] To solve the above technical problems, the present invention provides a lubrication parameter testing device for a multi-row planetary speed change mechanism, and the lubrication parameter testing device for the multi-row planetary speed change mechanism includes:

[0030] Connecting flange 1, lubricating oil path test prototype, flow partition measurement box body 9, rotating pipeline pressure measurement device 10, lubricating oil outlet 12, oil return port 13, partition plate 15;

[0031] The lubricating oil path test prototype is a structure designed to be a 1:1 restoration according to the oil path structure of the planetary transmission mechanism to be measured, including a variable-speed planetary row lubricating oil path component 2, a clutch lubricating oil path component 5, an input oil passage component 4, a reduction planetary row lubricating oil path component 6, a coupling planetary row lubricating oil path component 7, and a transmission shaft 3. Lubricating oil passage holes are arranged on each oil path component and the transmission shaft 3, and the structural dimensions of the lubricating oil path are the same as those of the planetary transmission mechanism to be measured;

[0032] The connecting flange 1 is connected to the driving motor of the test bench to input the rotational speed to the lubricating oil path test prototype and measure the lubrication parameters at different rotational speeds;

[0033] The flow partition measurement box body 9 is an outer contour box body, including a partition 15 arranged inside, a lubricating oil outlet 12 arranged on the side, and an oil return port 13 arranged at the bottom. Each oil path component included in the lubricating oil path test prototype is partitioned by the partition 15, so that the oil at the outlet of each lubricating oil path is collected in a partition at the bottom of the flow partition measurement box body 9, avoiding the splashing of lubricating oil inside the box body, and is led out through the lubricating oil outlet 12 on the side or the oil return port 13 at the bottom for flow measurement;

[0034] The rotating pipeline pressure measurement device 10 includes a high-speed conductive slip ring 11, a sensor, and a cable 14 of the sensor. The sensor is arranged on the rotating oil path and has the same rotational speed as the rotating parts. The cable 14 is connected to the high-speed conductive slip ring 11 by piercing through the rotating parts, and the oil pressure data is collected through the high-speed conductive slip ring 11. The sensor, the cable 14, the piercing parts, and the high-speed conductive slip ring 11 have the same rotational speed.

[0035] Among them, sensor cable holes are arranged on the transmission shaft 3 to introduce the cable 14 inside the flow partition measurement box body 9 into the high-speed conductive slip ring 11.

[0036] Among them, the partition 15 is designed in shapes according to the regions to be separated as needed, including straight plates, inclined plates, stepped plates, and special-shaped plates.

[0037] Among them, the connection relationships of the parts involved in the variable-speed planetary row lubricating oil path component 2, the clutch lubricating oil path 5, the input oil passage component 4, the reduction planetary row lubricating oil path component 6, and the coupling planetary row lubricating oil path component 7 are the same as those of the planetary transmission mechanism to be measured. When the driving motor inputs the rotational speed, the rotational speeds of each part are the same as those of the planetary transmission mechanism to be measured;

[0038] Among them, the lubricating oil path test prototype cancels the parts in the planetary transmission mechanism to be measured that are not involved in the oil path, providing space for the arrangement of sensors.

[0039] Among them, the sensor is a pressure sensor, a flow sensor, or a temperature sensor.

[0040] Among them, the flow measurement methods based on the flow partition measurement box 9 include the connection flow sensor measurement method, the internal dipstick measurement method, and the external measuring cup measurement method.

[0041] In this embodiment, the cable holes are arranged on the transmission shaft. The sensor cables on the variable-speed planetary gear set are connected to the middle flange 16 of the transmission shaft through holes a, groove c, hole b, and groove d on the right transmission shaft, and then through holes e, hole f, groove g, and groove h on the left transmission shaft, and finally connected to the conductive slip ring through holes i and hole j at the end to realize the pressure measurement of the rotating pipeline. Similarly, the wiring sequence of the sensor cables in the middle section of the transmission shaft is flange, hole e, hole f, groove g, groove h, hole i, hole j, and finally connected to the conductive slip ring; the wiring sequence of the sensor cables of the reduction planetary gear set is groove g, hole f, groove h, hole i, hole j, and finally connected to the conductive slip ring; the wiring sequence of the coupling planetary gear set is hole i, hole j, and finally connected to the conductive slip ring.

[0042] Embodiment 1

[0043] This embodiment provides a lubrication parameter testing device for a multi-row planetary transmission mechanism, including a lubricating oil path testing prototype restored to the original planetary transmission mechanism at a ratio of 1:1, a rotating pipeline pressure testing device, etc., which can measure parameters such as lubricating flow rate and lubricating pipeline pressure under different rotational speed conditions of a complex planetary transmission mechanism, and in particular can realize the partition measurement of the lubricating flow rate of a transmission mechanism with multiple planetary gear sets and the pressure measurement of the rotating oil path.

[0044] Next, the technical solutions in the embodiments of the present invention will be described completely and clearly with reference to the accompanying drawings of the embodiments of the present invention.

[0045] As Figure 1 、 Figure 2 、 Figure 3 shown, the lubrication parameter testing device for a multi-row planetary transmission mechanism in the embodiments of the present invention includes a connecting flange 1, a transmission shaft 3, a variable-speed planetary gear set lubricating oil path assembly 2, a clutch lubricating oil path assembly 5, an input oil passage assembly 4, a reduction planetary gear set lubricating oil path assembly 6, a coupling planetary gear set lubricating oil path assembly 7, a support member 8, a flow partition measurement box 9, and a rotating pipeline pressure measurement device 10. The rotating pipeline pressure measurement device includes a sensor 17, a high-speed conductive slip ring 11, and a cable 14. The flow partition measurement box includes a lubricating oil outlet 12, an oil return port 13, and a partition 15. The transmission shaft includes a middle flange 16, wiring holes (a, b, e, f, i, j), and wiring grooves (c, d, g, h).

[0046] The connecting flange 1 is connected to the driving motor to input the rotational speed for the lubrication test prototype, and realize the measurement of lubrication parameters at different rotational speeds;

[0047] The transmission shaft 3, the lubricating oil path assembly 2 of the variable-speed planetary gear set, the lubricating oil path assembly 5 of the clutch, the input oil passage assembly 4, the lubricating oil path assembly 6 of the reduction planetary gear set, and the lubricating oil path assembly 7 of the coupling planetary gear set are the lubrication structural components of the original planetary transmission mechanism, and their connection relationships, operating speeds, and oil passage structure parameters are the same as those of the original planetary transmission mechanism;

[0048] Sensor mounting holes are provided on the transmission shaft 3, the lubricating oil path assembly 2 of the variable-speed planetary gear set, the lubricating oil path assembly 5 of the clutch, the lubricating oil path assembly 6 of the reduction planetary gear set, and the lubricating oil path assembly 7 of the coupling planetary gear set. In the embodiment of the present invention, the type of the installed sensor is a pressure sensor, and the number of sensors is 6;

[0049] Regarding the problem of the sensor cable routing on the rotating pipeline, routing holes are provided on the parts with the same rotation speed as the sensor, and the cable is introduced into the high-speed conductive slip ring through the routing hole to realize the acquisition of sensor data. In the embodiment of the present invention, a sensor cable routing hole is provided on the transmission shaft 3, and the sensor cables of each rotating oil path are introduced into the leftmost high-speed conductive slip ring;

[0050] A partition is provided in the flow partition measurement box body 9 to partition the lubricating oil path assembly of the variable-speed planetary gear set, the lubricating oil path assembly of the clutch, the lubricating oil path assembly of the reduction planetary gear set, and the lubricating oil path assembly of the coupling planetary gear set, so that the oil at the outlets of each lubricating oil passage is collected in a partition at the bottom of the box body, avoiding the splashing of lubricating oil inside the box body. At the same time, oil outlets are provided on both the side and the bottom of the flow partition measurement box body, and the lubricating oil in each partition box can flow into the measuring cup through the oil outlet for flow measurement. In the embodiment of the present invention, the oil outlet on the side is connected to a measuring cup or a flow sensor for testing the lubricating oil flow during the test, and the oil outlet at the bottom is connected to the return oil pump of the test bench for pumping out all the oil in the box body at the end of the test;

[0051] The rotating pipeline pressure measurement device 10 includes sensors, cables, and a high-speed conductive slip ring. In the embodiment of the present invention, there are a total of 6 sensors, among which 1 is installed on the stationary pipeline for measuring the oil pressure at the inlet of the clutch assembly, and 5 are installed on the rotating pipeline for measuring the oil pressures of the variable-speed planetary gear set, the transmission shaft, the reduction planetary gear set, and the coupling planetary gear set oil paths. The cable of the sensor at the inlet of the clutch assembly is led out from the top cover of the box body; the sensor cable on the variable-speed planetary gear set is connected to the middle flange of the transmission shaft through the routing hole and the routing groove on the right-side transmission shaft, and then connected to the conductive slip ring through the routing hole and the routing groove on the left-side transmission shaft; the sensor cable in the middle of the transmission shaft is connected to the conductive slip ring through the flange and the routing hole and the routing groove on the left-side transmission shaft; the sensor cable on the reduction planetary gear set is connected to the conductive slip ring through the routing hole and the routing groove on the left-side transmission shaft; the sensor cable on the coupling planetary gear set is connected to the conductive slip ring through the routing hole on the left-side transmission shaft.

[0052] In summary, the lubrication test device provided by the present invention solves the problems that the internal lubrication flow rate and pressure distribution of a compact planetary transmission mechanism cannot be measured under rotating conditions, and the simulation accuracy cannot be calibrated. By extracting the lubrication pipeline parts of the original planetary transmission mechanism and designing corresponding connection structures, a 1:1 restoration of the lubrication test prototype is achieved; by installing sensors on the rotating pipeline and installing slip rings outside the rotating structure, the pressure and flow rate of the rotating parts are measured; by machining wire holes on the rotating parts and connecting the test cables of the motion sensors to the slip rings, the acquisition of test data is realized; by setting partitions to isolate the components of the lubrication test prototype, the real-time measurement of the flow rate of each component of the transmission mechanism is achieved.

[0053] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A multi-row planetary transmission mechanism lubrication parameter testing device, characterized in that: The multi-row planetary speed change mechanism lubrication parameter testing device comprises: A connecting flange (1), a lubricating oil circuit test prototype, a flow partition measurement box (9), a rotating pipeline pressure measuring device (10), a lubricating oil outlet (12), an oil return port (13), and a partition (15); The lubricating oil circuit test prototype is a structure designed to be restored in a 1:1 manner according to the oil circuit structure of the planetary speed change mechanism to be tested, comprising a speed change planetary gear lubricating oil circuit assembly (2), a clutch lubricating oil circuit assembly (5), an input oil channel assembly (4), a speed reduction planetary gear lubricating oil circuit assembly (6), a coupling planetary gear lubricating oil circuit assembly (7), and a transmission shaft (3), wherein each oil circuit assembly and the transmission shaft (3) are provided with a lubricating oil channel hole, and the structural dimensions of the lubricating oil channel are consistent with those of the planetary speed change mechanism to be tested; The connecting flange (1) is connected to the test bench drive motor to input the rotation speed of the lubricating oil circuit test prototype to achieve lubrication parameter measurement at different rotation speeds; The flow partition measurement box (9) is an outer box, comprising a partition (15) arranged inside, a lubricating oil outlet (12) arranged on the side, and an oil return port (13) arranged at the bottom. Each oil channel component contained in the lubricating oil circuit test sample is partitioned by the partition (15), so that the oil at the outlet of each lubricating oil channel is collected in a partition at the bottom of the flow partition measurement box (9), and is led out through the lubricating oil outlet (12) on the side or the oil return port (13) at the bottom for flow measurement; The rotary pipeline pressure measuring device (10) comprises a high-speed conductive slip ring (11), a sensor, and a cable (14) for the sensor. The sensor is arranged on a rotary oil channel and has the same rotation speed as a rotating part. The cable (14) is connected to the high-speed conductive slip ring (11) by punching holes in the rotating part. Oil pressure data is collected through the high-speed conductive slip ring (11). The rotation speeds of the sensor, the cable (14), the perforated part, and the high-speed conductive slip ring (11) are consistent.

2. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: A sensor cable hole is arranged on the transmission shaft (3) to lead the cable (14) inside the flow partition measurement box (9) into the high-speed conductive slip ring (11).

3. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The partition (15) is designed in shape according to the areas to be separated, including a straight plate, an inclined plate, a stepped plate, and a special-shaped plate.

4. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The connection relationship of the parts involved in the speed planetary gear lubricating oil circuit assembly (2), the clutch lubricating oil circuit 5, the input oil channel assembly (4), the speed reduction planetary gear lubricating oil circuit assembly (6), and the coupling planetary gear lubricating oil circuit assembly (7) is consistent with the planetary gearshift mechanism to be tested. When the driving motor inputs a rotational speed, the rotational speed of each part is consistent with that of the planetary gearshift mechanism to be tested.

5. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The lubricating oil circuit test prototype eliminates the parts not involving the oil channel in the tested planetary speed change mechanism, thereby providing space for the arrangement of sensors.

6. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The sensor is a pressure sensor, a flow sensor or a temperature sensor.

7. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The flow rate testing method based on the flow partition measurement box (9) includes a flow rate sensor connection measurement method, an internal oil dipstick measurement method, and an external measuring cup measurement method.

8. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The lubrication parameter testing device realizes lubrication flow partitioning of the transmission mechanism by arranging partitions on the box body, and realizes real-time measurement of the lubrication flow by arranging oil outlets on the side and bottom of each partition box body.

9. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The lubrication parameter testing device simplifies the original planetary transmission mechanism to be tested, extracts the structure containing the lubrication oil circuit, forms a lubrication oil circuit test prototype dedicated to lubrication parameter testing, eliminates parts without oil channels, and designs reasonable connection structures such as splines, taper sleeves, and retaining rings, thereby achieving a lubrication oil circuit prototype design that is 1:1 with the original planetary transmission mechanism in terms of rotation speed and oil channel structural parameters.

10. The multi-row planetary transmission mechanism lubrication parameter testing device according to claim 1, characterized in that: The lubrication parameter test device realizes the arrangement of the rotating oil channel sensor cables in the prototype by machining wiring holes on the rotating parts, and realizes the data collection of the sensor through the high-speed conductive slip ring.

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