CN214200986U - Deformation test bed for elastic pin shaft of gear box of wind generating set - Google Patents
Deformation test bed for elastic pin shaft of gear box of wind generating set Download PDFInfo
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- CN214200986U CN214200986U CN202022368684.4U CN202022368684U CN214200986U CN 214200986 U CN214200986 U CN 214200986U CN 202022368684 U CN202022368684 U CN 202022368684U CN 214200986 U CN214200986 U CN 214200986U
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- elastic pin
- pin shaft
- planet carrier
- hydraulic cylinder
- sensor support
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Abstract
The utility model discloses a wind generating set gear box elastic pin shaft deformation test bed, which mainly comprises a frame, a hydraulic cylinder, a planet carrier assembly, a pushing handle, a displacement sensor, a first sensor bracket, a second sensor bracket, a third sensor bracket and a fourth sensor bracket; the hydraulic cylinder is arranged on the frame; the planet carrier assembly is arranged on the frame; the push handle is connected with a piston rod of the hydraulic cylinder and is arranged between the hydraulic cylinder and the elastic pin shaft; a plurality of displacement sensors which are vertical to the circumferential surface of the elastic pin shaft are arranged on the first sensor bracket; and a displacement sensor perpendicular to the end face of the elastic pin shaft is installed at the top of the second sensor support. The utility model discloses a measure the deflection data of elastic pin axle to find out the deformation law in the elastic pin axle actual work according to data, for one-level planetary gear's the magnitude of interference between shape and elastic pin axle and the one-level planet carrier provides theoretical basis, provide the reference for elastic pin axle's structure size design simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the technique of wind generating set gear box and specifically relates to indicate a wind generating set gear box elastic pin axle deformation test bench.
Background
The gear box of the wind generating set is the most key part of the transmission chain of the fan. The gear box is composed of a primary planet assembly, a secondary planet assembly, a primary sun gear assembly, a front end cover assembly, a box body assembly and the like. The planetary transmission structure is a key part of the wind power gear box and has the characteristics of compact structure, large transmission ratio and the like. One of the planetary assembly parts is shown in figure 1: 01 is a first-stage planet gear bearing, 02 is an elastic pin shaft sleeve, and 03 is an elastic pin shaft. The most obvious advantages of the elastic pin structure of the gear box compared with the traditional structure are as follows: the load bearing condition between the planet wheels can be improved, so that the meshing is more uniform, the operation is more stable, the probability of damage of the meshing pair is reduced, and the service life of the gear box is prolonged. In the process of operating the gear box, the stress of the pin shaft reaches a balanced state through the elastic pin shaft sleeve and the first-stage planetary gear bearing, but the bending phenomenon of the elastic pin shaft is generally found in the actual operation process, the ideal working state of the elastic pin shaft cannot be reached, and the actual stress balance point and the theoretical stress balance point of the elastic pin shaft are different. After the elastic pin shaft is bent and deformed, the installation gap between the elastic pin shaft and the primary planet carrier can be enlarged, and the phenomenon of oil leakage of the gear box can occur in severe cases, so that the normal operation of the gear box is adversely affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a wind generating set gear box elastic pin axle deformation test bench, through the deflection data of measuring elastic pin axle to according to the deformation law in the data finding elastic pin axle actual work, for one-level planetary gear's the size of interference between shaping and elastic pin axle and the one-level planet carrier provides theoretical basis, provide the reference for elastic pin axle's structure size design simultaneously.
In order to achieve the above object, the present invention provides a technical solution: a deformation test bed for an elastic pin shaft of a gear box of a wind generating set comprises a rack, a hydraulic cylinder, a leveling device, a planet carrier assembly, a push handle, a resistance strain gauge, a plurality of displacement sensors, a first sensor support, a second sensor support, a third sensor support and a fourth sensor support; a hydraulic cylinder mounting position is formed at one end of the frame; the hydraulic cylinder is arranged on the rack through a hydraulic cylinder mounting position and used for simulating external load, and the inclination angle of the hydraulic cylinder is adjusted through a leveling device arranged on the rack by the hydraulic cylinder so as to ensure that the center of the hydraulic cylinder is aligned with the center of the elastic pin shaft to be tested; the planet carrier assembly is arranged on the rack, and an elastic pin shaft mounting position is arranged on the planet carrier assembly for mounting an elastic pin shaft to be tested; the resistance strain gauges are uniformly adhered to the circumferential surface of the bottom of the elastic pin shaft and used for measuring the deformation of the elastic pin shaft; the push handle is connected with a piston rod of the hydraulic cylinder and is arranged between the hydraulic cylinder and the elastic pin shaft, the bottom of the push handle is arranged on the planet carrier assembly in a sliding mode through a guide rail on the planet carrier assembly, an arc-shaped surface simulating the inner side surface of a planetary gear of the gear box is formed on one side, facing the elastic pin shaft, of the push handle and used for simulating the contact of the planetary gear and the elastic pin shaft, and a groove position capable of containing the first sensor support and a displacement sensor on the first sensor support is formed in the center of the arc-; the first sensor support is arranged on one side, facing the pushing handle, of the elastic pin shaft, is fixed on the planet carrier assembly through a base of the first sensor support, is provided with a plurality of displacement sensors which are arranged side by side from top to bottom, and the displacement sensors are all perpendicular to the circumferential surface of the elastic pin shaft; the second sensor support is arranged on the other side of the elastic pin shaft and is fixed on the planet carrier assembly through the base, the top of the second sensor support is provided with a displacement sensor perpendicular to the end face of the elastic pin shaft, and the torsional deformation of the elastic pin shaft is measured through the two displacement sensors perpendicular to the end face of the elastic pin shaft; the third sensor support spans over the planet carrier assembly and is fixed on the ground through bases on two sides of the third sensor support, a plurality of displacement sensors perpendicular to the end face of the hydraulic cylinder are transversely arranged on the third sensor support, and the displacement sensors are uniformly distributed on the periphery of the hydraulic cylinder and used for measuring the deformation of the hydraulic cylinder; the fourth sensor support spans over the planet carrier assembly, is fixed on the ground through bases on two sides of the fourth sensor support, is provided with a plurality of displacement sensors perpendicular to the upper surface of the planet carrier assembly, and is uniformly distributed around the elastic pin shafts, and the deformation of the installation positions of the elastic pin shafts on the planet carrier assembly is measured through the plurality of displacement sensors.
Further, the planet carrier subassembly includes planet carrier, cushion backing plate subassembly, collar and guide rail, cushion backing plate subassembly has two to distribute in the both sides of planet carrier bottom, every cushion backing plate subassembly is by stacking backing plate and the backing plate component together, planet carrier, cushion and backing plate pass through bolted connection and are in the same place, install on the planet carrier and be used for the fixed collar of first sensor support and second sensor support, be equipped with the elastic pin axle installation position on the planet carrier, this installation position is located the center department of collar, the planet carrier is close to and installs the guide rail on one side of pushing hands for the installation of pushing hands.
Furthermore, the two leveling devices are arranged on two sides of the frame in parallel and symmetrically by taking the axis of the hydraulic cylinder as a central line; every levelling device includes pull rod, leveling bolt and voussoir, the one end of pull rod is formed with L shape structure for the one side of the tip of hookup at the rack-mount pneumatic cylinder, the other end of pull rod inserts on the other end of frame, and is formed with on the other end of this pull rod and supplies voussoir male mounting hole, leveling bolt is connected pull rod and frame, makes the center of pneumatic cylinder align with the center of elastic pin axle through leveling bolt to insert the voussoir and realize locking in the mounting hole.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the test bed of the utility model has simple structure and convenient operation, can adjust the height of the elastic pin shaft on the test bed through different cushion blocks and backing plates, is convenient to adjust, is suitable for deformation tests of elastic pin shafts and elastic pin shaft sleeves of gear boxes of different types, and has simple, convenient and quick experimental process; the displacement deformation and the torsion deformation of the elastic pin shaft under the equivalent load are measured by the aid of the resistance strain gauge and the sensor in a matched mode, the deformation rule of the elastic pin shaft in actual work is found out, and an important theoretical basis is provided for repairing gears and designing the elastic pin shaft.
Drawings
FIG. 1 is a schematic structural view of a primary planetary assembly in a gearbox of a wind generating set in the prior art.
Fig. 2 is a schematic view of the three-dimensional structure of the test bed of the present invention.
Fig. 3 is a side view of the test stand of the present invention.
Fig. 4 the utility model discloses a displacement sensor's that is used for testing elastic pin axle deformation on the test bench schematic diagram of arranging.
Fig. 5 is a schematic diagram of the arrangement of the displacement sensor used for testing the deformation of the hydraulic cylinder on the test bed.
Fig. 6 is a schematic layout diagram of a displacement sensor used for testing the deformation of a planet carrier on a test bed.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 2 to 6, the test stand for deformation of the elastic pin shaft of the gear box of the wind generating set according to the embodiment includes a frame 1, a hydraulic cylinder 2, a leveling device, a planet carrier assembly, a pushing handle 5, a resistance strain gauge 6, a displacement sensor, a first sensor bracket 7, a second sensor bracket 8, a third sensor bracket 9 and a fourth sensor bracket 10; a hydraulic cylinder mounting position is formed at one end of the rack 1, the rack 1 is a steel plate welding part, all stressed steel plates are subjected to groove welding in order to ensure the bearing capacity of the rack 1, and the rack 1 and the plane of the test bed have parallelism requirements; the hydraulic cylinder 2 is arranged on the rack 1 through a hydraulic cylinder mounting position and used for simulating external load, meanwhile, the cylindrical surface on which the hydraulic cylinder 2 is arranged has a verticality requirement with the plane of the test bed, and the hydraulic cylinder 2 adjusts the inclination angle of the hydraulic cylinder 2 through a leveling device arranged on the rack 1 so as to ensure that the center of the hydraulic cylinder 2 is aligned with the center of the elastic pin shaft 11 to be tested; the two leveling devices are arranged on two sides of the frame 1 in parallel and symmetrically by taking the axis of the hydraulic cylinder 2 as a center line, each leveling device comprises a pull rod 301, a leveling bolt 302 and a wedge block 303, an L-shaped structure is formed at one end of the pull rod 301 and is used for being hooked at one side of the end part of the frame 1, which is used for installing the hydraulic cylinder 2, the other end of the pull rod 301 is inserted into the other end of the frame 1, an installation hole for inserting the wedge block 303 is formed at the other end of the pull rod 301, the pull rod 301 and the frame 1 are connected by the leveling bolt 302, the center of the hydraulic cylinder 2 is aligned to the center of the elastic pin shaft 11 by the leveling bolt 302, and the wedge block 303 is inserted into the installation hole to realize locking; the planet carrier assembly is arranged on the rack 1, and an elastic pin shaft mounting position is arranged on the planet carrier assembly for mounting an elastic pin shaft 11 to be tested; the resistance strain gauges 6 are uniformly adhered to the circumferential surface of the bottom of the elastic pin shaft 11 and used for measuring the deformation of the elastic pin shaft 11, each resistance strain gauge 6 is connected to the acquisition card through a lead, and after the elastic pin shaft 11 is loaded, the strain gauges deform and change the resistance value, and the electric signals are converted into digital signals through the processing of the acquisition card, so that strain values are output; the push handle 5 is connected with a piston rod of the hydraulic cylinder 2, is arranged between the hydraulic cylinder 2 and the elastic pin shaft 11, and is arranged on the planet carrier assembly in a sliding manner at the bottom through a guide rail on the planet carrier assembly, an arc surface 501 simulating the inner side surface of a planetary gear of the gear box is formed on one side of the push handle 5 facing the elastic pin shaft 11 and is used for simulating the contact of the planetary gear and the elastic pin shaft 11, and a groove position 502 capable of accommodating the first sensor support 7 and an upper displacement sensor is formed in the center of the arc surface 501; the first sensor support 7 is arranged on one side, facing the push handle 5, of the elastic pin shaft 11, is fixed on a mounting ring 404 of the planet carrier assembly through a base of the elastic pin shaft, is provided with a plurality of displacement sensors 12 arranged side by side from top to bottom, the plurality of displacement sensors 12 are perpendicular to the circumferential surface of the elastic pin shaft 11, the push handle 5 is driven to push and press the elastic pin shaft 11 through a hydraulic cylinder 2 under a simulated working condition, the first sensor support 7 and the displacement sensors 12 are accommodated in a slot 502 in the center of an arc-shaped surface 501, the displacement deformation of the elastic pin shaft 11 under an equivalent load is measured through the displacement sensors 12 and a resistance strain gauge 6, and the displacement sensors 13 perpendicular to the end surface of the elastic pin shaft 11 are arranged at the top of the first sensor support 7; the second sensor support 8 is arranged at the other side of the elastic pin shaft 11 and is fixed on the mounting ring 404 of the planet carrier assembly through the base, the top of the second sensor support is provided with a displacement sensor 14 vertical to the end surface of the elastic pin shaft 11, and the torsional deformation of the elastic pin shaft 11 is measured through two displacement sensors vertical to the end surface of the elastic pin shaft 11; the third sensor support 9 spans over the planet carrier assembly and is fixed on the ground through bases on two sides of the planet carrier assembly, a plurality of displacement sensors 15 perpendicular to the end face of the hydraulic cylinder 2 are transversely arranged on the third sensor support, and the plurality of displacement sensors 15 are uniformly distributed around the hydraulic cylinder 2 and used for measuring the deformation of the hydraulic cylinder 2; the fourth sensor support 10 spans over the planet carrier assembly and is fixed on the ground through bases on two sides of the fourth sensor support, a plurality of displacement sensors 16 perpendicular to the upper surface of the planet carrier assembly are arranged on the fourth sensor support, the plurality of displacement sensors 16 are uniformly distributed around the elastic pin shaft 11, and deformation of the installation position of the elastic pin shaft 11 on the planet carrier assembly is measured through the plurality of displacement sensors 16.
Wherein the planet carrier assembly member comprises a planet carrier 401, a pad backing plate assembly, a mounting ring 404 and a guide rail (not shown in the figure); the two cushion block cushion plate assemblies are distributed on two sides of the bottom of the planet carrier 401, each cushion block cushion plate assembly is composed of a cushion plate 402 and a cushion block 403 which are stacked together, the planet carrier 401, the cushion blocks 403 and the cushion plates 402 are connected together through bolts, and deformation tests of different series of gear box pin shafts are met by changing the thickness of the cushion blocks 403 or the cushion plates 402 on the premise that the relative positions of the push handles 5 and the elastic pin shafts 11 are met; the planet carrier 401 is provided with a mounting ring 404 for fixing the first sensor support 7 and the second sensor support 8, the planet carrier 401 is provided with an elastic pin shaft mounting position, the mounting position is positioned at the center of the mounting ring 404, the elastic pin shaft 11 is mounted on the mounting position and matched with the planet carrier 401 according to the actual assembly condition, and the matching tolerance is consistent with the actual assembly condition; the guide rail is arranged on one side, close to the push handle 5, of the planet carrier 401 and used for installing the push handle 5, the single face of the push handle 5 and the single face of the guide rail after being assembled keep a 0.5mm gap requirement, lubricating grease needs to be added after the guide rail is installed, the flatness needs to be checked, and the flatness cannot exceed 0.05 mm.
During the experiment, utilize pneumatic cylinder 2 to come the simulation operating mode to promote pushing hands 5 bulldozes elastic pin axle 11, let elastic pin axle 11 produce the deformation under the thrust effect that pneumatic cylinder 2 is different. In order to measure different deformation amounts, the initial coordinates and the coordinates after deformation of the elastic pin shaft 11 are measured by a high-precision displacement sensor through measuring points arranged around the elastic pin shaft 11, so that a deformation curve of the elastic pin shaft 11 is drawn. And calculating displacement deformation data of the elastic pin shaft 11 after calibration and conversion so as to obtain the rule of the displacement deformation of the elastic pin shaft 11.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. The utility model provides a wind generating set gear box elastic pin axle deformation test platform which characterized in that: the device comprises a rack, a hydraulic cylinder, a leveling device, a planet carrier assembly, a push handle, a resistance strain gauge, a plurality of displacement sensors, a first sensor bracket, a second sensor bracket, a third sensor bracket and a fourth sensor bracket; a hydraulic cylinder mounting position is formed at one end of the frame; the hydraulic cylinder is arranged on the rack through a hydraulic cylinder mounting position and used for simulating external load, and the inclination angle of the hydraulic cylinder is adjusted through a leveling device arranged on the rack by the hydraulic cylinder so as to ensure that the center of the hydraulic cylinder is aligned with the center of the elastic pin shaft to be tested; the planet carrier assembly is arranged on the rack, and an elastic pin shaft mounting position is arranged on the planet carrier assembly for mounting an elastic pin shaft to be tested; the resistance strain gauges are uniformly adhered to the circumferential surface of the bottom of the elastic pin shaft and used for measuring the deformation of the elastic pin shaft; the push handle is connected with a piston rod of the hydraulic cylinder and is arranged between the hydraulic cylinder and the elastic pin shaft, the bottom of the push handle is arranged on the planet carrier assembly in a sliding mode through a guide rail on the planet carrier assembly, an arc-shaped surface simulating the inner side surface of a planetary gear of the gear box is formed on one side, facing the elastic pin shaft, of the push handle and used for simulating the contact of the planetary gear and the elastic pin shaft, and a groove position capable of containing the first sensor support and a displacement sensor on the first sensor support is formed in the center of the arc-shaped surface; the first sensor support is arranged on one side, facing the pushing handle, of the elastic pin shaft, is fixed on the planet carrier assembly through a base of the first sensor support, is provided with a plurality of displacement sensors which are arranged side by side from top to bottom, and the displacement sensors are all perpendicular to the circumferential surface of the elastic pin shaft; the second sensor support is arranged on the other side of the elastic pin shaft and is fixed on the planet carrier assembly through the base, the top of the second sensor support is provided with a displacement sensor perpendicular to the end face of the elastic pin shaft, and the torsional deformation of the elastic pin shaft is measured through the two displacement sensors perpendicular to the end face of the elastic pin shaft; the third sensor support spans over the planet carrier assembly and is fixed on the ground through bases on two sides of the third sensor support, a plurality of displacement sensors perpendicular to the end face of the hydraulic cylinder are transversely arranged on the third sensor support, and the displacement sensors are uniformly distributed on the periphery of the hydraulic cylinder and used for measuring the deformation of the hydraulic cylinder; the fourth sensor support spans over the planet carrier assembly, is fixed on the ground through bases on two sides of the fourth sensor support, is provided with a plurality of displacement sensors perpendicular to the upper surface of the planet carrier assembly, and is uniformly distributed around the elastic pin shafts, and the deformation of the installation positions of the elastic pin shafts on the planet carrier assembly is measured through the plurality of displacement sensors.
2. The wind generating set gearbox elastic pin deformation test bed according to claim 1, characterized in that: the planet carrier subassembly includes planet carrier, cushion backing plate subassembly, collar and guide rail, cushion backing plate subassembly has two to distribute in the both sides of planet carrier bottom, every cushion backing plate subassembly is by stacking backing plate and the backing plate that is in the same place, planet carrier, cushion and backing plate pass through bolted connection and are in the same place, install on the planet carrier and be used for the collar that first sensor support and second sensor support are fixed, be equipped with the elastic pin axle installation position on the planet carrier, this installation position is located the center department of collar, the planet carrier is close to and installs the guide rail on one side of pushing hands for the installation of pushing hands.
3. The wind generating set gearbox elastic pin deformation test bed according to claim 1, characterized in that: the two leveling devices are arranged on two sides of the frame in parallel and symmetrically by taking the axis of the hydraulic cylinder as a central line; every levelling device includes pull rod, leveling bolt and voussoir, the one end of pull rod is formed with L shape structure for the one side of the tip of hookup at the rack-mount pneumatic cylinder, the other end of pull rod inserts on the other end of frame, and is formed with on the other end of this pull rod and supplies voussoir male mounting hole, leveling bolt is connected pull rod and frame, makes the center of pneumatic cylinder align with the center of elastic pin axle through leveling bolt to insert the voussoir and realize locking in the mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022368684.4U CN214200986U (en) | 2020-10-22 | 2020-10-22 | Deformation test bed for elastic pin shaft of gear box of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022368684.4U CN214200986U (en) | 2020-10-22 | 2020-10-22 | Deformation test bed for elastic pin shaft of gear box of wind generating set |
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| Publication Number | Publication Date |
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| CN214200986U true CN214200986U (en) | 2021-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022368684.4U Active CN214200986U (en) | 2020-10-22 | 2020-10-22 | Deformation test bed for elastic pin shaft of gear box of wind generating set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739661A (en) * | 2022-03-28 | 2022-07-12 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
-
2020
- 2020-10-22 CN CN202022368684.4U patent/CN214200986U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739661A (en) * | 2022-03-28 | 2022-07-12 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
| CN114739661B (en) * | 2022-03-28 | 2023-12-22 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
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