WO2020073578A1

WO2020073578A1 - Device for testing bearing performance of vertical shaft lifting spindle device

Info

Publication number: WO2020073578A1
Application number: PCT/CN2019/075864
Authority: WO
Inventors: 夏士雄; 王重秋; 牛强; 陈朋朋
Original assignee: 中国矿业大学
Priority date: 2018-10-10
Filing date: 2019-02-22
Publication date: 2020-04-16
Also published as: CN109374272B; CN109374272A

Abstract

A device for testing the bearing performance of a vertical shaft lifting spindle device, comprising a vertical substrate (1), a hydraulic loading device (2), a loading positioning platform (3) and a horizontal base (8). The horizontal base (8) is arranged in a horizontal longitudinal direction; the vertical substrate (1) is horizontally arranged across the center line of the horizontal base (8); the loading positioning platform (3) is arranged on the vertical substrate (1) along an arc-shaped notch; the hydraulic loading device (2) is arranged on the loading positioning platform (3) and the vertical substrate (1) in the circumferential direction. On the basis of a multi-point hydraulic cylinder loading mode, positive pressure applied to the spindle device along the circumferential direction of a drum (4) is simulated; normal and extreme conditions such as non-load, no-load, heavy-load, clamping and secondary loading may be simulated; crack detection and strength checking may be carried out on the spindle device; defects such as spindle bending, spindle imbalance, and assembly loosening may be diagnosed; and the bearing performance of spindle devices having different spindle diameters, different wrapping angles, different numbers of steel cords and different wire rope intervals may be tested in a unified manner before such spindle devices are put into use. The testing device has a simple structure and reliable performance.

Description

Device and method for detecting bearing performance of vertical shaft lifting spindle device

Technical field

The invention relates to a bearing performance detection device and method, in particular to a bearing performance verification device and method suitable for a main shaft device of a shaft elevator

Background technique

The vertical shaft hoist, as the main mine hoisting equipment, has the important task of lifting coal gangue, lowering materials, lifting personnel and equipment, and is the connection hub between the underground coal mine and the ground. The main shaft device is mainly composed of the reel, the main shaft and the bearing seat. As an important component of the hoist to bear the load and transmit power, it is used to bear the tension of the steel rope on both sides of the reel and transmit the motor torque. During the lifting process of the lifting container, the main shaft device is constantly subjected to strong periodic alternating pressure within the range of the surrounding angle. As a large-scale basic equipment invested at one time, the spindle device needs to withstand the load changes of the hoist under normal and extreme conditions to ensure that no serious accidents such as deformation and cracks will occur during the service period, so its load-bearing performance is extremely demanding. At the same time, once the load-bearing performance such as deformation and cracks decreases, the repair will cause the coal mine to interrupt the transportation for a long time and cause serious economic losses. Therefore, before the main shaft device is put into service, it is necessary to carry out a strict bearing performance test on the main shaft device.

At present, there are many manufacturers of hoist spindle devices, and the manufacturing processes and production standards used are not the same, and the bearing performance test of the spindle device lacks a unified device and standard. Due to the diverse geological conditions of coal mines, different demands are placed on lifting loads and lifting speeds, resulting in vertical shaft friction hoists with different reel diameters and different enveloping angles, which makes it difficult to adopt a unified test for the bearing performance of the main shaft device. Equipment, and the establishment of detection devices for different specifications of friction elevators will generate higher construction and operating costs. At present, the factory inspection of the spindle device mainly performs the idling test without applying a load to the spindle device. Judgment of the bearing performance of the spindle device is mainly based on factors such as the thickness of the reel, the thickness of the web, the number of support rings, the position of the support ring, the number of man-shaped holes, and the size of the man-shaped holes. .

At present, the research and research of the main shaft device mainly focus on the detection of the mine in active service. The patent number ZL201410028896.4 discloses a torque monitoring device for the main shaft of the elevator based on the rotation angle measurement, which can realize the torque measurement at different speeds such as the rotation of the rotating shaft. 201410028404.1 discloses an axial differential mine hoist spindle torque detection device that can realize real-time detection of spindle torque. Patent No. ZL201410130423.5 discloses a PSD laser triangulation-based elevator spindle vibration detection method to monitor the spindle in the horizontal and vertical directions. Vibration displacement in the direction. Some scholars have built a test bench to conduct theoretical research on the stress and vibration characteristics of the main shaft device. Bending and torsion composite fatigue behavior of hoisting machine spindle under vibration and impact conditions. The above-mentioned patents mainly have the following problems: first, the main state monitoring of the active spindle device, and the lack of load bearing performance test of the spindle device before installation, and the latter is the fundamental guarantee that the spindle device does not have structural failure; second, the main The detection of a single type of spindle device cannot effectively adapt to different spindle diameters and wrap angles of the spindle device; third, the lack of loading detection of the spindle device before installation, it is impossible to effectively evaluate the load bearing performance of the spindle device; fourth, Detection of in-service mines cannot effectively use the characteristic parameter changes of the main shaft device under no load and heavy load, which is an important feature for diagnosing abnormal deformation and cracks of the main shaft device, and can not simulate the jam, secondary Loading and other vicious working conditions, and the latter is an important reference for judging whether the bearing performance of the spindle device can withstand extreme working conditions. Therefore, it is necessary to study a bearing performance detection device for the spindle device, which can detect the bearing performance of the spindle device with different reel diameters and wrap angles, simulating the normal working conditions such as no-load and heavy-load, as well as jam and secondary loading Under extreme working conditions, diagnose whether there is deformation and cracks in the spindle device, and at the same time evaluate that the spindle device can withstand normal and extreme working conditions, so as to accurately detect the bearing performance of the spindle device, which is of great significance for ensuring the safety of the vertical shaft.

Summary of the invention

Technical problem: The purpose of the present invention is to overcome the shortcomings in the prior art, and to provide a bearing performance detection device and method for a vertical shaft lifting spindle device with simple structure, accurate detection, high reliability, convenience and quickness, and reliable performance.

Technical solution: In order to achieve the above object, a bearing performance detection device of a shaft lifting spindle device of the present invention includes a vertical base plate, a hydraulic loading device, a loading positioning platform and a horizontal base; the horizontal base is provided with A support platform with a rectangular groove is provided with a spindle device under test. The spindle device under test is composed of a reel, a spindle and a bearing seat mounted coaxially, a horizontal base is arranged horizontally and longitudinally, and the vertical base plate is provided with A circular arc-shaped gap, the circular arc-shaped gap rides horizontally on the central axis of the horizontal base, the loading positioning platform is arranged on the vertical base plate along the circular arc-shaped gap, the circular arc-shaped gap of the vertical base plate, is The axis of the measuring spindle device and the axis of the loading positioning platform are collinear. The loading positioning platform is provided with a number of rows of loading positioning holes arranged in a circle. The number of the hydraulic loading device is N. The loading positioning holes pass through the hydraulic cylinder support It is arranged on the loading positioning platform and the vertical substrate along the circumferential direction.

The hydraulic loading device includes a hydraulic cylinder sleeve, a hydraulic cylinder support, a hydraulic cylinder piston rod, a rope pitch positioning plate, a rope pitch positioning hole, a positioning pin, a positioning fixture, a loading roller and a loading pad; the hydraulic cylinder The support is provided at both ends of the cylinder sleeve of the hydraulic cylinder, and the front end of the piston rod of the hydraulic cylinder is provided with a rope pitch positioning plate, the rope pitch positioning plate is provided with multiple rows of pitch distance positioning holes, and the multiple rows of pitch distance positioning holes are arranged at intervals There are multiple positioning fixtures, and the multiple positioning fixtures are arranged on the rope pitch positioning plate at equal intervals through the positioning pin. One end of the positioning fixture is a clamping plate, which is clamped on the rope pitch positioning plate, and the other end of the positioning fixture is a roller clamping plate. The loading roller is provided with a circular loading pad on the rim of the loading roller.

The number N of the hydraulic loading devices depends on the detection accuracy of the measured spindle device with different diameters and wrap angles.

The hole density of the loading positioning hole in the circumferential direction satisfies the circular arc formed by several hydraulic loading devices to meet the detection requirements of the spindle device with different diameters and wrap angles being tested.

The length of the piston rod of the hydraulic cylinder is L> (D _MAX -D _MIN ) / 2, where D _MAX is the diameter of the largest reel and D _MIN is the diameter of the smallest reel.

The rope pitch positioning plate is provided with four rows of pitch positioning holes in four vertical intervals of 200mm, 250mm, 300mm and 350mm, and another group of pitch positioning holes of the same pitch is provided in the horizontal direction for setting positioning Fixture.

The number of the positioning fixtures is four or six, depending on the specifications of the spindle device under test.

The method for detecting the bearing performance of the shaft-lifting spindle device includes the following steps:

(a) Install the loading pad into the rim of the loading roller, install the loading roller between the roller clamps of the positioning fixture, and assemble the same number of positioning as the number of steel ropes according to the number of steel ropes and the spacing of the steel ropes of the spindle device under test Fixture, select the same pitch pitch positioning holes, fix the positioning fixture to the pitch positioning plate through the positioning pin, the pitch positioning plate is fixed to the front end of the piston rod of the hydraulic cylinder, according to the reel diameter D and the circumference of the spindle device under test The wrap angle α, considering the loading accuracy within the range of the simulated wrap angle α, constitutes N hydraulic loading devices;

(b) Install the horizontal base along the horizontal and longitudinal direction, install the vertical base plate along the horizontal line of the horizontal base, install the loading positioning platform on the arc-shaped gap of the vertical base plate, and make the vertical base plate round The arc gap and the axis of the loading positioning platform are collinear, according to the loading accuracy within the envelope angle α, select the loading positioning hole in the appropriate position, and install N hydraulic loading devices through the loading positioning hole in the circumferential direction through the hydraulic cylinder support On the loading positioning platform and vertical substrate;

(c) Install the tested spindle device consisting of bearing seat, reel and spindle coaxial installation on the supporting platform of the horizontal base, so that the axis of the tested spindle device and the axis of the loading positioning platform are collinear and along the tested spindle device The motor is installed on the axis of the axis, so that the motor can drag the tested spindle device to rotate;

(d) According to the diameter dimension D of the friction hoist and the wrap angle α, simulate the loads F _L1 and F _L2 on both sides of the actual reel, and obtain the radial pressure F _x distribution of the wire rope within the wrap angle α:

In the formula: B is the width of the actual friction pad of the hoist, μ is the friction coefficient of the actual friction pad,

Is the angle of the creeping arc in the enveloping arc under the action of F _L1 and F _L2 ;

Thus, the simulated radial pressure F ₁ , F ₂ , F ₃ , ..., F _{N of the} reel at the loading rollers of _N hydraulic loading devices is obtained, and the oil pressure of the oil outlet of each hydraulic loading device is adjusted accordingly, thereby Simulate the force state of the reel under various loads F _L1 and F _L2 of the spindle device.

When detecting whether the tested spindle device has cracks, install the acoustic emission sensor in the drum shell, support ring, reinforcing ribs, spokes and the riveting position of the main shaft riveting position to simulate the position of the tested spindle device under no load And the load state of the reel under heavy load, adjust the oil pressure of the oil outlet of each hydraulic loading device, start the hydraulic loading device, and use the hydraulic loading device to load the reel locally and overall within the range of the wrap angle α, compare Analyze whether the elastic stress wave of the detection point before and after loading changes drastically, determine whether there is a crack at the corresponding position of the tested spindle device, and use the method of multiple local loading to analyze and obtain the specific location of the crack;

When detecting whether the strength of the tested spindle device meets the requirements, install the acoustic emission sensor at the position of the drum shell, the spoke plate, and both ends of the spindle that are prone to elastic deformation, and simulate the measured spindle device in the canister, secondary loading Under the extreme working conditions of the reel, adjust the oil pressure of the oil outlet of each hydraulic loading device, start the hydraulic loading device, use the hydraulic loading device to load the reel, and compare and analyze the change of the elastic stress wave at the detection point before and after loading Whether the allowable threshold is exceeded, to determine whether the elastic deformation of the corresponding position of the tested spindle device exceeds the standard, so as to determine whether the strength of the tested spindle device is qualified;

When it is necessary to detect whether the main shaft device under test can operate normally under load, the vibration sensor is installed vertically and horizontally on the upper surface and side of the bearing seat at both ends of the reel to simulate the main shaft under test to be loaded on the lifting container without load and weight. Load the force state of the reel, adjust the oil pressure of the oil outlet of each hydraulic loading device, start the hydraulic loading device, use the hydraulic loading device to load the reel, start the motor, and the motor drags the measured spindle device to rotate and analyze the vibration The amplitude of the acceleration at 1 ×, 2 × equal frequency doubling and the phase change rule in the vertical and horizontal directions determine whether the spindle device under test has spindle bending, spindle unbalance and loose component defects.

Beneficial effect: Due to the adoption of the above technical solution, the present invention is tested before the installation of the main shaft device in the mining area, based on the multi-point hydraulic cylinder loading method to simulate the positive pressure of the tested main shaft device along the circumferential direction of the reel, and adopts a circumferentially distributed hydraulic cylinder The piston rod telescopic way adapts to the spindle device with different drum radius and wrap angle. The multi-row rope pitch positioning holes are arranged at equal intervals to adapt to the different number of wire ropes and the distance between the wire ropes. Carry out local and overall loading, simulate normal and extreme conditions such as no-load, no-load, heavy-load, jam, secondary loading, etc., and perform crack detection and strength check on the tested spindle device, and can diagnose spindle bending , The unbalance of the spindle, loose components and other defects, before the service can be carried out on different reel diameters, different enveloping angles, different numbers of steel wire ropes, and different steel wire rope spacing of the spindle device, unified bearing performance testing is important to ensure the safety of the spindle device significance. The structure is simple, the operation is convenient, the performance is reliable, the effect is good, the economic benefit is remarkable, and it has wide practicality.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of the device structure of the present invention;

2 is a schematic diagram of the hydraulic loading device of the present invention;

3 is a schematic diagram of the bearing performance test of the spindle device of the device of the present invention.

In the picture: 1—vertical base plate, 2—hydraulic loading device, 2-a—hydraulic cylinder liner, 2-b—hydraulic cylinder support, 2-c—hydraulic cylinder piston rod, 2-d—rope pitch positioning plate , 2-e—pitch positioning hole, 2-f—positioning pin, 2-g—positioning fixture, 2-h—loading roller, 2-i—loading pad, 3-loading positioning platform, 3-a— Loading positioning hole, 4—reel, 5—spindle, 6—bearing housing, 7—motor, 8—horizontal base.

detailed description

The present invention will be further described below with reference to the embodiments in the drawings:

As shown in FIG. 1, a bearing performance detection device of a shaft lifting spindle device of the present invention is mainly composed of a vertical base plate 1, a hydraulic loading device 2, a loading positioning platform 3, and a horizontal base 8, the horizontal base 8 It is a supporting platform with a rectangular groove in the middle, which can support and install the bearing seat 6, and the main shaft device under test is provided on the supporting platform. The main shaft device under test is formed by the coaxial installation of the reel 4, the main shaft 5 and the bearing seat 6, and the horizontal base 8 arranged horizontally and longitudinally, the vertical base plate 1 is provided with a circular arc-shaped notch, straddling the midline of the horizontal base 8 along the horizontal lateral direction, and the loading positioning platform 3 is arranged on the vertical base plate along the circular arc-shaped notch 1, the main shaft device is composed of the reel 4, the main shaft 5 and the bearing seat 6 installed coaxially, the circular arc-shaped gap of the vertical base plate 1, the axis of the tested main shaft device and the loading positioning platform 3 are collinear, the loading The positioning platform 3 is provided with a plurality of rows of loading positioning holes 3-a arranged in a circle, and the number of the hydraulic loading devices 2 is N, and are arranged along the circumferential direction through the hydraulic cylinder supports 2-b through the loading positioning holes 3-a On the loading positioning platform 3 and the vertical substrate 1.

As shown in FIG. 2, the hydraulic loading device 2 is composed of a hydraulic cylinder sleeve 2-a, a hydraulic cylinder support 2-b, a hydraulic cylinder piston rod 2-c, a rope pitch positioning plate 2-d, and a rope pitch positioning hole 2-e, positioning pin 2-f, positioning jig 2-g, loading roller 2-h and loading pad 2-i, wherein the hydraulic cylinder liner 2-a and the hydraulic cylinder piston rod 2-c constitute the hydraulic pressure Cylinder, the hydraulic cylinder support 2-b is provided at both ends of the hydraulic cylinder sleeve 2-a, the front end of the hydraulic cylinder piston rod 2-c is provided with a rope pitch positioning plate 2-d, the rope pitch positioning plate 2-d is provided with multiple rows of pitch positioning holes 2-e, multiple rows of pitch positioning holes 2-e are spaced with multiple positioning fixtures 2-g, and multiple positioning fixtures 2-g pass through the positioning pin shaft 2-f Equidistantly arranged on the rope pitch positioning plate 2-d, one end of the positioning fixture 2-g is a clamping plate, clamped on the rope pitch positioning plate 2-d, and the other end of the positioning fixture 2-g is a roller clamping plate, provided with The loading roller 2-h is provided with an annular loading pad 2-i on the rim of the loading roller 2-h.

The length L> (D _MAX -D _MIN ) / 2 of the piston rod 2-c of the hydraulic cylinder, where D _MAX is the diameter of the largest reel 4 and D _MIN is the diameter of the smallest reel 4; The number of hydraulic loading devices 2 depends on the detection accuracy of the spindle device with different diameters and wrap angles; the hole density of the loading positioning holes 3-a in the circumferential direction satisfies the circular arc formed by multiple hydraulic loading devices 2 to adapt to different diameters The detection requirements of the main shaft device of the enveloping angle; the rope pitch positioning plate 2-d is divided into four vertical intervals of 200mm, 250mm, 300mm and 350mm in the vertical direction, and there are four rows of rope pitch positioning holes 2-e Set another set of pitch positioning holes 2-e with the same pitch in the direction to set the positioning fixture 2-g; according to actual needs, the number of the positioning fixture 2-g is four or six, depending on the measured Spindle device specifications.

The method for detecting the bearing performance of the shaft lifting spindle device of the present invention has the following specific steps:

(a) Install the loading pad 2-i into the rim of the loading roller 2-h, and the loading roller 2-h is installed between the roller clamps of the positioning fixture 2-g, according to the number of steel wire ropes of the tested spindle device and Wire rope spacing, assemble the same number of positioning fixtures 2-g as the number of wire ropes, select the same spacing pitch positioning holes 2-e, fix the positioning fixture 2-g to the rope pitch positioning plate 2- through the positioning pin 2-f On d, the pitch positioning plate 2-d is fixed to the front end of the piston rod 2-c of the hydraulic cylinder. According to the diameter D of the reel and the wrap angle α of the main shaft device under test, the loading accuracy within the range of the simulated wrap angle α is considered. N hydraulic loading devices 2; N hydraulic loading devices 2 are determined according to the needs of the spindle device under test. In the example of FIG. 1, N is 11 of which 10 are set in the semi-circular arc section and one is set in the wrap angle The position of the rope out point.

(b) Install the horizontal base 8 in the horizontal longitudinal direction, mount the vertical base plate 1 along the horizontal line of the horizontal base 8 horizontally, install the loading positioning platform 3 on the circular arc-shaped gap of the vertical base plate 1, and make The arc-shaped gap of the vertical base plate 1 and the axis of the loading positioning platform 3 are collinear. According to the loading accuracy within the enclosing angle α, the loading positioning hole 3-a in a suitable position is selected, and the N hydraulic loading devices 2 are loaded. The positioning hole 3-a is installed on the loading positioning platform 3 and the vertical base plate 1 through the hydraulic cylinder support 2-b in the circumferential direction;

(c) Install the measured spindle device on the support platform of the horizontal base 8, that is, the bearing seat 6, the reel 4 and the spindle 5 are coaxially installed, so that the axis of the spindle device and the loading positioning platform 3 are collinear and along A motor 7 is installed on the axis of the spindle device, so that the motor 7 can drag the spindle device to rotate;

(d) According to the diameter dimension D of the friction hoist and the wrap angle α, simulate the loads F _L1 and F _L2 on both sides of the actual reel to obtain the radial pressure distribution of the steel wire rope (3) within the wrap angle α

Is the creeping arc angle in the enveloping arc under the action of F _L1 and F _L2 , so as to obtain the simulated radial pressure F ₁ , F _{2 of the} reel 4 at the loading roller (2-h) of the N hydraulic loading devices ₂ , F ₃ , ..., F _N , and then adjust the oil pressure of the oil outlet of each hydraulic loading device 2 to simulate the stress state of the reel under various loads F _L1 and F _L2 of the spindle device;

When detecting whether there is a crack in the spindle device, install the acoustic emission sensor in the shell of the reel 4, the supporting ring, the reinforcing rib, the spoke plate, and the riveting place of the spindle 5 and other places where cracks are likely to occur. Simulate that the spindle device under test is empty Under the load and heavy load, the state of the reel 4 is adjusted, the hydraulic pressure of the oil outlet of each hydraulic loading device 2 is adjusted, the hydraulic loading device 2 is started, and the hydraulic loading device 2 is used to partially perform the reel 4 within the surrounding angle α Compared with the overall loading, compare and analyze whether the elastic stress wave of the detection point before and after loading changes drastically, determine whether there is a crack at the corresponding position of the main shaft device, and use the method of multiple local loading to analyze and obtain the specific location of the crack;

When detecting whether the strength of the spindle device meets the requirements, install the acoustic emission sensor at the position of the shell of the reel 4, the spoke plate, and the ends of the spindle 5 that are prone to elastic deformation, and simulate the extreme position of the spindle device at the tank, secondary loading, etc. Under the working condition of the reel 4, adjust the oil pressure of the oil outlet of each hydraulic loading device 2, start the hydraulic loading device 2, use the hydraulic loading device 2 to load the reel 4, and compare and analyze the elasticity of the detection point before and after loading Whether the change of the stress wave exceeds the allowable threshold, determine whether the elastic deformation of the corresponding position of the spindle device exceeds the standard, and thus determine whether the strength of the spindle device is qualified;

When it is necessary to detect whether the spindle device can operate normally under load, the vibration sensor is installed vertically and horizontally on the upper surface and side of the bearing housing 6 at both ends of the reel 4 to simulate the spindle loaded under no load and heavy load of the lifting container The force state of the reel 4 adjusts the oil pressure of the oil outlet of each hydraulic loading device 2, starts the hydraulic loading device 2, uses the hydraulic loading device 2 to load the reel 4, starts the motor 7, and the electric motor 7 drags the spindle device to rotate , Analyze the amplitude of vibration acceleration at 1 ×, 2 × equal frequency doubling and the phase change law in both vertical and horizontal directions to determine whether the spindle device has defects such as spindle bending, spindle imbalance, loose components, etc.

Claims

A bearing performance detecting device for a shaft lifting spindle device, characterized in that it includes a vertical base plate (1), a hydraulic loading device (2), a loading positioning platform (3) and a horizontal base (8); the horizontal The base (8) is a supporting platform with a rectangular groove in the middle, and the main shaft device under test is provided on the supporting platform, and the main shaft device under test is composed of a reel (4), a main shaft (5) and a bearing seat (6) installed coaxially , The horizontal base (8) is arranged along the horizontal longitudinal direction, and the vertical base plate (1) is provided with an arc-shaped gap, and the arc-shaped gap is straddled on the central axis of the horizontal base (8) along the horizontal direction, The loading positioning platform (3) is arranged on the vertical base plate (1) along an arc-shaped opening, and the axes of the arc-shaped opening of the vertical base plate (1), the measured spindle device and the loading positioning platform (3) are collinear , The loading positioning platform (3) is provided with a plurality of rows of loading positioning holes (3-a) arranged in a circle, the number of the hydraulic loading device (2) is N, and after loading positioning holes (3-a) The hydraulic cylinder support (2-b) is arranged on the loading positioning platform (3) and the vertical base plate (1) in the circumferential direction.
The bearing performance detecting device of the shaft lifting main shaft device according to claim 1, characterized in that the hydraulic loading device (2) includes a hydraulic cylinder sleeve (2-a) and a hydraulic cylinder support (2-b) , Hydraulic cylinder piston rod (2-c), rope pitch positioning plate (2-d), rope pitch positioning hole (2-e), positioning pin (2-f), positioning fixture (2-g), loading roller (2-h) and loading pad (2-i); the hydraulic cylinder support (2-b) is provided at both ends of the hydraulic cylinder sleeve (2-a), the hydraulic cylinder piston rod (2-c) ) Is provided with a pitch positioning plate (2-d), the pitch positioning plate (2-d) is provided with multiple rows of pitch positioning holes (2-e), and multiple rows of pitch positioning holes (2-e) ) A plurality of positioning jigs (2-g) are provided in the inner space, and the plurality of positioning jigs (2-g) are arranged on the rope pitch positioning plate (2-d) at equal intervals through the positioning pins (2-f). One end of (2-g) is a clamping plate, which is clamped on the pitch positioning plate (2-d), and the other end of the positioning fixture (2-g) is a roller clamping plate, with a loading roller (2-h), a loading roller ( The rim of 2-h) is provided with an annular loading pad (2-i).
The bearing performance detection device of the shaft lifting spindle device according to claim 1 or 2, characterized in that: the number N of the hydraulic loading devices (2) depends on the detection of the measured spindle device with different diameters and wrap angles Precision.
The bearing performance detecting device of the shaft lifting main shaft device according to claim 1, characterized in that: the hole density of the loading positioning hole (3-a) in the circumferential direction satisfies a plurality of hydraulic loading devices (2) The arc meets the testing requirements of the spindle device with different diameters and wrap angles being tested.
The bearing performance detecting device of the shaft lifting spindle device according to claim 2, characterized in that the length (2-c) of the piston rod (2-c) of the hydraulic cylinder is L> (D MAX -D MIN ) / 2, where D MAX Is the diameter of the largest reel (4), D MIN is the diameter of the smallest reel (4).
The bearing performance detecting device of the shaft lifting main shaft device according to claim 2, characterized in that the rope pitch positioning plate (2-d) is divided into four intervals of 200mm, 250mm, 300mm and 350mm along the vertical direction. A row of string pitch positioning holes (2-e), and another set of pitch pitch positioning holes (2-e) with the same pitch in the horizontal direction are used to set the positioning jig (2-g).
The bearing performance detecting device of the shaft lifting spindle device according to claim 2, characterized in that the number of the positioning fixtures (2-g) is four or six, depending on the specifications of the spindle device under test.
The detection method using the bearing performance detection device of the vertical shaft lifting spindle device according to claim 1 or 2, characterized in that it includes the following steps:

(a) Install the loading pad (2-i) into the rim of the loading roller (2-h), and install the loading roller (2-h) between the roller clamping plates of the positioning fixture (2-g), according to Measure the number of wire ropes and the distance between the wire ropes of the spindle device, assemble the same number of positioning fixtures (2-g) as the number of wire ropes, select the rope pitch positioning holes (2-e) with the same spacing, and pass the positioning pin (2-f) Fix the positioning fixture (2-g) on the pitch positioning plate (2-d), the pitch positioning plate (2-d) is fixed on the front end of the piston rod (2-c) of the hydraulic cylinder, according to the volume of the spindle device under test The cylinder diameter D and the enclosing angle α, considering the loading accuracy within the range of simulated enclosing angle α, form N hydraulic loading devices (2);

(b) Install the horizontal base (8) along the horizontal and longitudinal direction, mount the vertical base plate (1) along the horizontal line across the center line of the horizontal base (8), and install the loading positioning platform (3) on the vertical base plate (1) ) On the arc-shaped gap, and make the arc-shaped gap of the vertical base plate (1) and the axis of the loading positioning platform (3) collinear, according to the loading accuracy within the envelope angle α, select the appropriate position for loading Hole (3-a), install N hydraulic loading devices (2) through the loading positioning hole (3-a) through the hydraulic cylinder support (2-b) in the circumferential direction on the loading positioning platform (3) and the vertical base plate (1) Up;

(c) Install the tested spindle device consisting of bearing seat (6), reel (4) and main shaft (5) on the supporting platform of horizontal base (8) to make the tested main spindle device and loading position The axis of the platform (3) is collinear, and a motor (7) is installed along the axis of the spindle device under test so that the motor (7) can drag the spindle device under test to rotate;

(d) Simulate the loads F L1 and F L2 on both sides of the actual reel according to the diameter D of the friction hoist and the wrap angle α, and obtain the radial pressure F x distribution of the wire rope (3) within the wrap angle α :

In the formula: B is the width of the actual friction pad of the hoist, μ is the friction coefficient of the actual friction pad,
Is the angle of the creeping arc in the enveloping arc under the action of F L1 and F L2 ;

Thus, the simulated radial pressures F 1 , F 2 , F 3 , ..., F N of the reel (4) at the loading rollers (2-h) of the N hydraulic loading devices (2) are obtained, and the respective adjustments are made accordingly The oil pressure of the oil outlet of the hydraulic loading device (2) simulates the force state of the reel under various loads F L1 and F L2 of the spindle device.
The method for testing the bearing performance of a shaft lifting spindle device according to claim 8, characterized in that:

When detecting whether there is a crack in the main shaft device under test, install the acoustic emission sensor at the position where the shell of the reel (4), the supporting ring, the reinforcing rib, the web and the main shaft (5) are prone to cracks. Measure the force state of the reel (4) under no-load and heavy-load of the spindle device, adjust the oil pressure of the oil outlet of each hydraulic loading device (2), start the hydraulic loading device (2), use the hydraulic loading device (2) Locally and integrally load the reel (4) within the envelope angle α, compare and analyze whether the elastic stress wave of the detection point before and after loading changes drastically, determine whether there is a crack in the corresponding position of the tested spindle device, and can use multiple local Load method, analyze and obtain the specific location of the crack;

When detecting whether the strength of the tested spindle device meets the requirements, install the acoustic emission sensor at the position of the drum (4), the spoke plate, and both ends of the spindle (5) that are prone to elastic deformation. Under the extreme working conditions of the canister and the secondary loading, adjust the oil pressure of the oil outlet of the hydraulic loading device (2), start the hydraulic loading device (2), and use the hydraulic loading device (2) ) Load the reel (4), compare and analyze whether the change of the elastic stress wave at the detection point before and after loading exceeds the allowable threshold, and determine whether the elastic deformation of the corresponding position of the tested spindle device exceeds the standard, so as to judge whether the strength of the tested spindle device is qualified;

When it is necessary to detect whether the tested spindle device can operate normally under load, the vibration sensor is installed vertically and horizontally on the upper surface and sides of the bearing housing (6) at both ends of the reel (4) to simulate that the measured spindle is loaded on Raise the force state of the reel (4) under no load and heavy load of the container, adjust the oil pressure of the oil outlet of each hydraulic loading device (2), start the hydraulic loading device (2), and use the hydraulic loading device (2) to rewind The cylinder (4) is loaded, the motor (7) is started, and the motor (7) drags the measured spindle device to rotate, and analyzes the amplitude of vibration acceleration at 1 ×, 2 × equal frequency doubling and the phase change in both vertical and horizontal directions According to the law, determine whether the tested spindle device has defects of spindle bending, spindle imbalance and loose components.