WO2020073582A1 - Endless-rope-type vertical shaft lifting joint debugging and testing apparatus and method - Google Patents

Abstract

Disclosed is an endless-rope-type vertical shaft lifting joint debugging and testing apparatus. The apparatus is composed of a support foundation (3), a hydraulic loading apparatus (1), a winding guide and loading apparatus (2) and an endless steel wire rope (4), wherein the hydraulic loading apparatus (1) is mounted on a platform of the support foundation (3) in a straddling manner in a horizontal transverse direction, and the winding guide and loading apparatus (2) is mounted at the bottom of an inner side of a sandwiched wall of two sub-foundations of the support foundation (3) in the horizontal transverse direction. By means of a closed cycle of an endless rope, different lifting distances and lifting speeds can be simulated, and on the basis of principles of a hydraulic cylinder pressing against the steel wire rope and a bidirectional hydraulic pump providing load damping, loads on two sides of a winding drum are simulated. The winding guide and loading apparatus based on lead screw drive is used for being adapted to different diameters of the winding drum, and a rope distance positioning plate is used for being adapted to different numbers of steel wire ropes and different steel wire rope spacing so as to reliably evaluate the bearing performance of a main shaft apparatus, the slide-proof performance of a friction pad and the braking performance of a brake, such that joint debugging and testing can be performed on vertical shaft lifters of various specifications before on-site installation.

Description

Electrodeless rope type vertical shaft lifting joint debugging test device and method Technical field

The invention relates to a joint debugging test device and method suitable for a vertical shaft hoist

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 joint adjustment test of the hoist refers to the joint installation of the spindle device (including reel, spindle, bearing seat), pad, brake system, etc. after successful installation, to jointly check whether the spindle device and brake system can adapt to normal and extreme working conditions. The key steps before hoist installation on site. At the same time, the vertical shaft hoist is a large-scale basic equipment installed at one time, especially the tower type vertical shaft hoist. Its on-site installation requires a large installation cost. Therefore, the joint debugging test before delivery needs to fully reflect the drive of the mine hoist, Braking performance, to avoid major installation and commissioning costs caused by secondary installation.

At present, the joint test of vertical shaft hoist is mainly no-load operation, that is, only the motor is used to drive the main shaft device to run idly, and no load test has been carried out. The braking performance of the brake cannot be accurately evaluated. Due to the diverse geological conditions of the coal mine, different demands are placed on the lifting load and lifting speed. As a result, many types of vertical shaft hoists with different drum diameters, drum wrapping angles, number of wire ropes, and wire rope spacing have been produced, resulting in It is difficult to adopt a unified device for machine performance testing, and constructing evaluation devices for shaft hoists of different specifications will incur significant construction and operating costs and will not meet economic needs. This makes it difficult for enterprises to build corresponding loading and braking detection platforms for various types of shaft hoists before leaving the factory. There is a lack of dedicated joint debugging test equipment, which mainly stays in theoretical calculation and three-dimensional mechanical simulation.

At present, for the detection research of mine lifting systems, the main focus is on the detection of active mines. For example, the state monitoring method of deep well lifting equipment with application number CN201710531454.5 based on signal fusion can strip the fault signal from the mixed monitoring signal to monitor the operating state of the system . At the same time, some scholars built a variety of test benches to test and improve the performance of the system. For example, the ultra-deep mine lifting system test bench with authorization number ZL201410528414.1 uses the motor horizontal drag method to replace the vertical lifting conditions under actual working conditions. A variety of mine lifting functions; the multi-level simulation test platform of the ultra-deep mine hoisting system with authorization number ZL201610118998.4 can simulate the movement state of the ultra-deep mine hoisting equipment under actual working conditions, and obtain the main performance parameters of the hoisting equipment under faulty working conditions; the authorization number is ZL201410728399.5 kilometer deep well winding hoisting steel wire rope impact friction system can simulate the steel wire rope impact friction conditions under different rotation speed, acceleration, impact speed and contact specific pressure. The above research mainly has the following problems: First, it mainly conducts condition monitoring on the equipment in active service, but lacks the performance test of the vertical shaft lifting system before installation, and the latter can uniformly calibrate different types of vertical shaft lifting systems produced by various manufacturers before on-site installation. Nuclear, avoid repeated testing investment of large production enterprises, improve the manufacturing quality of small production enterprises, and ensure the safety of the lifting system from the source; second, mainly for the detection of a single type of lifting system, can not effectively adapt to different reel diameters, rolls The hoisting system of the tube wrap angle, the number of steel wire ropes, and the spacing of the steel wire ropes; third, the lack of load testing before installation, the load bearing performance of the main shaft device, the anti-skid performance of the liner, and the braking performance of the brake cannot be accurately evaluated; 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 to judge the main shaft device, friction pad, brake The system can withstand the extreme conditions of an important reference. Therefore, it is necessary to study a vertical shaft hoisting joint testing device, which can carry out joint testing of the main shaft device, liner and brake system of different types of hoisting systems to simulate normal working conditions such as no load and heavy load, as well as jam , Secondary devices and other extreme working conditions, so as to accurately assess the bearing performance of the main shaft device, the anti-skid performance of the pad, and the brake performance of the brake, are of great significance for ensuring the safety of the 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 device and method for a stepless rope type vertical shaft hoisting joint testing device with a simple structure and both reliability and convenience.

Technical solution: In order to achieve the above object, a stepless rope type shaft hoisting joint testing device of the present invention includes a guide wheel of a shaft hoist to be tested, a motor, a bearing housing, a main shaft, a drum, a brake disc, and a friction lining The main shaft device of the shaft hoist under test composed of a pad, a brake brake support plate and a brake brake; also includes a support foundation, a hydraulic loading device, a winding guide loading device and an infinite steel wire rope. The support foundation consists of two identical The sub-foundation is composed of two sub-foundations that are stepped and arranged symmetrically along the horizontal and horizontal intervals to form the Ⅰ platform, Ⅱ platform and Ⅲ platform; on the Ⅰ platform of the supporting foundation, the main shaft of the vertical shaft hoist is installed along the horizontal transverse stride The device is equipped with the guide wheel of the shaft hoist to be measured along the horizontal transverse straddle on the Ⅱ platform of the supporting foundation; the hydraulic loading device is installed along the horizontal transverse straddling on the Ⅲ platform of the supporting foundation; between the two sub-foundations of the supporting foundation The bottom of the inner side of the clamping wall is provided with a winding guide loading device along the horizontal direction, the axis of the winding guide loading device and the axis of the main shaft device are parallel to each other Line and on the same vertical plane;

The hydraulic loading device includes a loading cylinder and a plurality of balancing cylinders. The loading cylinder includes a loading cylinder sleeve and a loading cylinder piston rod. A hydraulic loading support is provided on the front and back of the loading cylinder sleeve. The balance cylinders each include a balance cylinder sleeve and a balance cylinder piston rod; a plurality of balance cylinders are respectively fixed on one side of the rope pitch positioning plate via positioning fixtures, and the middle of the other side of the positioning plate is integrally connected with the loading cylinder piston rod , The top of the piston rod of the balance cylinder is provided with a roller clamping plate, a loading roller is arranged in the middle of the roller clamping plate, a loading pad is arranged on the rim of the loading roller, a rope groove is arranged on the loading pad, and all balancing cylinders Of the pressure chambers are connected to each other through pipes;

The winding guide loading device includes a damping loading device, a winding radius positioning device and a winding radius positioning plate; the winding radius positioning plate is in a semi-circular ring shape, and the two winding radius positioning plates are arranged horizontally and longitudinally opposite , The winding radius positioning plate is provided with a plurality of rows of winding radius positioning holes along the circumferential direction of the inner ring, the damping loading device is arranged horizontally and laterally at both ends of the winding radius positioning plate through the winding radius positioning holes, and the winding radius positioning device passes through the winding The positioning holes around the radius are circumferentially arranged on the arc section of the winding radius positioning plate.

The damping loading device includes a damping loading support, a damping loading handwheel, a damping loading screw nut, a damping loading screw, a damping loading clamping bolt, a damping loading support table, a damping loading main sliding table, a damping loading auxiliary sliding table , Damping loading clamping nut, bidirectional hydraulic pump, hydraulic pump main shaft, hydraulic pump coupling, damping loading countershaft, damping loading main shaft, damping loading fixed wheel, damping loading freewheel, damping loading cushion, damping loading radial Bearing and damping loading shaft support; the damping loading support platform is provided on the damping loading support, the damping loading handwheel, the damping loading screw nut and the damping loading screw are arranged coaxially, and the damping loading handwheel rotates to drive damping The loading screw rotates to push the damping loading screw nut forward and backward; the damping loading main sliding table is fixed to the damping loading screw nut, and can slide on the upper surface of the damping loading supporting table in the axial direction; the damping loading auxiliary sliding table It can slide freely on the upper surface of the damping loading support table along the axial direction of the damping loading screw; the middle two opposing damping loading main slides are clamped and set A damping loading spindle. One end of the damping loading spindle is connected to the hydraulic pump spindle of a bidirectional hydraulic pump through a hydraulic pump coupling. The bidirectional hydraulic pump is fixed on one side of the damping loading main slide, and the other side of the damping loading spindle One end is installed coaxially with the damping loading radial bearing, the damping loading radial bearing is fixed on the damping loading shaft support, and the damping loading shaft support is fixed on the damping loading main slide on the other side; the damping The loading spindle is connected in series with a damping loading fixed wheel, the damping loading fixed wheel is fixed on the damping loading spindle, the number and spacing of the damping loading fixed wheels are equal to the number and spacing of the steel wire ropes of the tested spindle device; the damping loading There are two auxiliary slides, and the two opposite damping loading auxiliary slides are sandwiched by a damping loading auxiliary shaft, both ends of the damping loading auxiliary shaft are fixed on the damping loading shaft support, and the damping loading shaft support is fixed on the damping The loading vice slide table; the damping loading secondary shaft is serially installed with a damping loading traveling wheel in series along the axial direction, and the damping loading traveling wheel can rotate along the axial direction of the damping loading secondary shaft. The number and spacing of the loaded traveling wheels are equal to the number and spacing of the steel wire ropes of the tested spindle device; the outer edges of the damped loaded fixed wheels and the damped loaded traveling wheels are provided with damping loading pads, and the damping loading pads There are rope grooves on the top; the damping loading main slide and the damping loading auxiliary slide are provided with collinear through holes on both sides, and the damping loading clamping bolt passes through the through hole from one end to load the damping loading main slide and the damping loading pair The sliding tables are connected together, and the other end of the damping-loading clamping bolt is tightened by the damping-loading clamping nut, so that the damping-loading fixed wheel and the damping-loading traveling wheel clamp the steel wire rope after being subjected to the squeezing force.

The winding radius positioning device includes a radius positioning support, a radius positioning handwheel, a radius positioning screw nut, a radius positioning screw, a radius positioning support table, a radius positioning main slide table, a radius positioning shaft support, and a radius positioning shaft , Radius positioning tour wheel and radius positioning pad; the radius positioning support platform is set on the radius positioning support, the radius positioning hand wheel, radius positioning screw nut and radius positioning screw are coaxially installed, radius positioning hand The wheel rotation drives the radius positioning screw to rotate, which in turn pushes the radius positioning screw nut forward and backward; the radius positioning main slide is fixed to the radius positioning screw nut and can slide on the upper surface of the radius positioning support table in the axial direction; two radii A radius positioning shaft is arranged at the opposite middle clamp of the positioning main slide table, and both ends of the radius positioning shaft are respectively fixed to the radius positioning main slide table through a radius positioning shaft support; the radius positioning shaft is installed with a radius in series along the axial direction Locating the traveling wheel, the radius positioning traveling wheel can rotate axially along the radius positioning shaft, and the number and spacing of the radius positioning traveling wheels are equal to that of the tested spindle The number and spacing of the steel wire ropes are arranged; the outer edge of the radius positioning traveling wheel is provided with a radius positioning pad, and the radius positioning pad is provided with a rope groove.

The hole density of the winding radius positioning hole in the circumferential direction depends on the arc formed by the outer edges of the damping loading fixed wheel and the radius positioning traveling wheel, so as to meet the test requirements of different diameter spindle devices.

The number of the multiple balancing cylinders is four or six, depending on the specifications of the spindle device under test.

The rope pitch positioning plate is provided with four rows of pitch pitch positioning holes along the vertical direction at 200mm, 250mm, 300mm and 350mm, and another set of pitch pitch positioning holes with the same pitch is provided in the horizontal direction for setting Positioning fixture. The test method using the above-mentioned electrodeless vertical shaft hoisting joint testing device includes the following steps:

(a) Install the hydraulic loading support vertically on both ends of the cylinder of the loading cylinder, and install the hydraulic loading positioning bolts on both ends of the hydraulic loading support. The top of the piston rod of the loading cylinder is vertically installed with a rope pitch positioning plate, according to the measured spindle device The number and spacing of the steel wire ropes, one end of the same number of positioning fixtures as the number of steel wire ropes is fixed to the rope pitch positioning plate through the rope pitch positioning holes, and the other end of the positioning fixture is fixed with a balance cylinder sleeve and a balance cylinder piston A roller splint is installed at the top of the rod, a loading roller is installed in the middle of the roller splint, a loading pad is installed on the rim of the loading roller, the pressure chamber of the balance cylinder is connected through a pipeline, and a hydraulic loading device is assembled;

(b) Install the hydraulic loading device on the Ⅲ platform of the supporting foundation through hydraulic loading positioning bolts along the horizontal direction; install the winding radius positioning plate on the inside bottom of the two sub-foundations of the supporting foundation along the horizontal and transverse direction The axis around the radius positioning plate and the axis of the spindle device are parallel to each other and on the same vertical plane;

(c) Install the damping loading support table on the damping loading support, the damping loading handwheel, the damping loading screw nut and the damping loading screw are coaxially installed, and the damping loading main slide is fixed on the damping loading screw nut, Install the damping loading pad on the outer edges of the damping loading fixed wheel and the damping loading traveling wheel, install the damping loading fixed wheel in series with the damping loading main shaft, the number and spacing of the damping loading fixed wheel are equal to the root of the steel wire rope of the main shaft device under test Number and spacing, the damping loading fixed wheel is fixed on the damping loading main shaft, one end of the damping loading main shaft is connected to the hydraulic pump main shaft of the bidirectional hydraulic pump through the hydraulic pump coupling), and the bidirectional hydraulic pump is fixed on one side On the sliding table, the other end of the damping loading spindle is coaxially mounted with the damping loading radial bearing. The damping loading radial bearing is fixed on the damping loading shaft support, and the damping loading shaft support is fixed on the other side of the damping loading main sliding table. , Install the damping loaded walking wheel in series in the axial direction of the damping loading auxiliary shaft, the number and spacing of the damping loaded walking wheel are equal to those of the steel wire rope of the main shaft device under test The number and spacing, the damping-loading movable wheel can rotate along the axis of the damping-loading secondary shaft, both ends of the damping-loading secondary shaft are fixed on the damping-loading shaft support, and the damping-loading shaft support is fixed on the damping-loading auxiliary slide table. The damping loading clamping bolt is passed through the through hole from one end to connect the damping loading main sliding table and the damping loading auxiliary sliding table together, and the other end is pre-tightened by the damping loading clamping nut to assemble two damping loading devices;

(d) Install the radius positioning support on the radius positioning support, the radius positioning handwheel, the radius positioning screw nut and the radius positioning screw are coaxially installed, and fix the radius positioning main slide on the radius positioning screw nut, Install the radius positioning pad on the outer edge of the radius positioning tour wheel. The number and spacing of the radius positioning tour wheels are equal to the number and spacing of the steel wire ropes of the spindle device under test. Install the radius positioning in series in the axial direction on the radius positioning shaft Traveling wheel, radius positioning The traveling wheel rotates axially along the radius positioning axis; the radius positioning axis is set between the two opposite radial positioning main slides, and both ends of the radius positioning axis are respectively fixed to the radius positioning axis support On the radius positioning main slide, several winding radius positioning devices are assembled, and the number of radius positioning devices depends on the diameter of the spindle device under test;

(e) Install the main shaft device of the shaft hoist to be tested along the horizontal and horizontal straddle on the I platform of the supporting foundation. The bearing seat is installed on the I platform of the supporting foundation along the horizontal and lateral straddle. The motor, main shaft and reel are installed coaxially , The brake disc is installed on the outer edge of the drum, and the friction pad is pressed against the drum shell in the circumferential direction, and the brake brake support plate is mounted on the I platform of the support foundation along the horizontal and horizontal ride and distributed on both sides of the main shaft device , Install the brake on the brake brake support plate along the circumference of the brake disc rim, so that it can clamp the brake disc during action, so as to brake the main shaft device, and ride horizontally on the supporting foundation Ⅱ platform The guide wheel of the vertical shaft hoist under test is installed across;

(f) Pass the electrodeless wire rope through the drum, guide wheel and winding guide loading device in sequence, place the upper part of the electrodeless wire rope in the friction liner of the drum shell and the rope groove of the guide wheel, and the lower part of the electrodeless wire rope hang down Winding radius positioning plate periphery;

(g) The damping loading device is fixed to both ends of the winding radius positioning plate in the horizontal direction through the winding radius positioning hole, and the winding radius positioning device is fixed on the circular arc section of the winding radius positioning plate in the circumferential direction, according to the measured The diameter D of the hoisting shaft of the shaft hoist, and the rotation of the damping loading hand wheel drives the rotation of the damping loading screw, which in turn drives the damping loading screw nut to move forward and backward. The distance between the outer edge of the fixed wheel and the axis of the winding radius positioning plate is D. Place the lower part of the infinite steel wire rope in the rope groove of the damping loaded fixed wheel. Turn the radius positioning hand wheel to drive the radius positioning screw to rotate, thereby promoting the radius positioning The screw nut moves back and forth, at this time, the radius positioning shaft moves back and forth along the radial direction of the winding radius positioning plate until the distance between the outer edge of the radius positioning travel wheel and the axis center of the winding radius positioning plate is D, so that the lower part of the electrodeless wire rope is placed In the rope groove of the radius positioning swimming wheel;

(h) Adjust the oil pressure at the outlet of the loading cylinder with a small oil pressure, start the hydraulic loading device, control the piston rod of the loading cylinder to extend, and the loading roller presses the infinite steel wire rope to pre-tension, then the infinite steel wire rope passes through the friction pad and guides The rope grooves of the wheel, the damping load pad and the radius positioning pad form a closed loop. Tighten the damping load clamping bolt so that the damping load fixed wheel and the damping load travel wheel can tightly clamp the infinite steel wire rope. At this time, the bidirectional hydraulic pump is driven by the infinite wire rope To provide load damping;

(i) Set the vertical distance of the action point of the loading roller to the contact point of the reel wire rope and the contact point of the wire rope of the damping load fixed wheel. Adjust the oil pressure of the oil outlet of the loading cylinder and the oil pressure of the bidirectional hydraulic pump. The force F acts on the electrodeless wire rope, and the bidirectional hydraulic pump acts on the electrodeless wire rope with the torque M. At this time, the angle between the electrodeless wire rope and the vertical direction is α, and it is necessary to simulate the electrodeless wire rope to run counterclockwise, then the rising side and the falling side The tension of the infinite wire rope is:

Where: r is the radius of the hydraulic pump spindle (2-a-k),

Thus simulating the light and heavy load side load of the reel, and then simulating the load on both sides of the reel under various working conditions;

(j) Carry out the bearing performance test of the spindle device, the anti-skid performance test of the friction pad, and the brake performance test of the brake,

Finally, the joint debugging test of the shaft hoist under test was completed, and the bearing performance of the main shaft device, the anti-skid performance of the friction pad, and the braking performance of the brake were reliably evaluated.

The testing of the bearing performance of the main shaft device mainly includes crack detection and strength verification. At this time, the brake brake clamps the brake disc and shuts down the motor:

First, when detecting whether there is a crack in the spindle device, install the acoustic emission sensor in the reel (cylinder shell, branch ring, rib, web and spindle riveting position, etc., where cracks are likely to occur, and simulate the spindle device in the air Under the load and heavy load of the reel, adjust the oil pressure of the oil outlet of the hydraulic loading device and the oil pressure of the two-way hydraulic pump, start the hydraulic loading device and the two-way hydraulic pump, stepless wire rope tensioning, pressure chamber The connected balancing cylinder makes the tension of multiple electrodeless steel ropes the same. A hydraulic loading device combined with a two-way hydraulic pump is used to load the reel within the envelope angle. A comparative analysis is made to see if the elastic stress wave at the detection point before and after loading changes drastically, and the spindle device is judged to be corresponding. Whether there are cracks in the location;

Second, when detecting whether the strength of the 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, simulate the spindle device in the tank, secondary loading, etc. Under extreme working conditions, the pressure of the reel is adjusted, the hydraulic pressure of the oil outlet of the hydraulic loading device and the hydraulic pressure of the bidirectional hydraulic pump are adjusted, the hydraulic loading device and the bidirectional hydraulic pump are started, the infinite steel wire rope is tensioned, and the pressure chamber is connected The balance cylinder makes the tension of multiple electrodeless steel ropes the same, compares and analyzes whether the change of the elastic stress wave at the test point before and after loading exceeds the allowable threshold, and judges whether the elastic deformation of the corresponding position of the spindle device exceeds the standard, so as to judge whether the strength of the spindle device is qualified.

The anti-skid performance test of the friction pads includes static friction test and dynamic friction test:

First, during the static friction test, the brake brake clamps the brake disc, shuts down the motor, simulates the difference in tension between the two sides of the steel rope under extreme conditions such as overload and secondary loading, and adjusts the oil output of the hydraulic loading device The oil pressure of the port and the oil pressure of the bidirectional hydraulic pump start the hydraulic loading device and the bidirectional hydraulic pump, and use the micro-displacement sensor to detect whether there is relative sliding between the infinite steel wire rope and the friction pad at this time, so as to judge the friction pad is static Whether it can meet the anti-skid requirements;

Second, when the dynamic friction test is performed, the brake brake clamps the brake disc, shuts down the motor, simulates the tension difference between the steel wire rope on both sides of the reel under heavy load, and adjusts the oil pressure and bidirectional of the oil outlet of the hydraulic loading device The hydraulic pressure of the hydraulic pump, start the hydraulic loading device and the bidirectional hydraulic pump, start the motor, open the brake, the motor controls the reel to start with angular acceleration a ₁ and angular deceleration a _{2 to} stop, use a micro-displacement sensor to detect this Whether the creeping slippage between the electrodeless steel wire rope and the friction pad is within the allowable range under the corresponding angular acceleration, so as to determine whether the friction pad can meet the anti-skid requirements under dynamic conditions;

The braking performance test of the brake mainly includes two aspects of static braking test and dynamic braking test:

First, when conducting a static brake test, the brake brake clamps the brake disc, shuts down the motor, simulates the tension difference between the steel wire rope on both sides of the drum under extreme conditions, and adjusts the oil pressure of the oil outlet of the hydraulic loading device and The oil pressure of the two-way hydraulic pump starts the hydraulic loading device and the two-way hydraulic pump to detect whether there is relative sliding between the brake and the brake disc at this time, so as to determine whether the brake can effectively brake the spindle under static conditions Device

Second, when the dynamic brake test is performed, the brake brake clamps the brake disc, shuts down the motor, simulates the tension difference between the steel wire rope on both sides of the reel under heavy load, and adjusts the oil pressure of the oil outlet of the hydraulic loading device And the hydraulic pressure of the two-way hydraulic pump, start the hydraulic loading device and the two-way hydraulic pump, start the motor, open the brake, the motor control drum starts at an angular acceleration a ₁ and reaches the speed v, close the motor, start the brake To detect whether the brake brake's idle travel time and braking deceleration are within the allowable range, so as to determine whether the brake system can effectively brake the spindle device under dynamic conditions.

Beneficial effect: Due to the adoption of the above technical solution, the invention can reliably evaluate the bearing performance of the main shaft device, the anti-skid performance of the friction pad, and the braking performance of the brake. Aiming at the urgent need of joint shaft testing equipment for vertical shaft lifting, the load on both sides of the drum is simulated based on the principle of hydraulic cylinder top pressure wire rope and bidirectional hydraulic pump providing load damping, and the winding guide loading device based on screw drive is suitable for different drums The diameter and the balance cylinder that communicate with each other in the pressure chamber make the tension of multiple electrodeless steel ropes consistent. At the same time, the rope pitch positioning plate is suitable for different numbers of steel ropes and the distance between the steel ropes, so it is suitable for a variety of vertical shaft hoists; The circulation method can well simulate different lifting distances and lifting speeds. The method of applying damping by hydraulic cylinder top pressure wire rope and bidirectional hydraulic pump can not only simulate normal working conditions such as no load, light load, heavy load, etc., but also simulate overload, Vicious extreme working conditions such as secondary heavy load, combined with acoustic emission sensors and micro-displacement sensors to reliably evaluate the bearing performance of the main shaft device, the anti-skid performance of the friction pads, and the braking performance of the brakes. Its structure is simple and versatile. Can carry out joint adjustment test on different types of vertical shaft hoist before installation on site, Stateful load testing, to ensure the safety of shaft hoist system is important.

BRIEF DESCRIPTION

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

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

Fig. 3 is a schematic diagram of the principle of positioning of the wire pitch of the present invention

4 is a schematic structural view of the winding guide loading device of the present invention;

5 is a schematic structural view of the damping loading device of the present invention;

6 is a schematic structural view of the winding radius positioning device of the present invention;

7 is a schematic diagram of the working principle of the present invention.

In the picture: 1—hydraulic loading device, 1-a—hydraulic loading positioning bolt, 1-b—loading cylinder sleeve, 1-c—hydraulic loading support, 1-d—loading cylinder piston rod, 1-e—rope Distance positioning hole, 1-f—rope distance positioning plate, 1-g—positioning pin, 1-h—positioning fixture, 1-i—balance cylinder sleeve, 1-j—balance cylinder piston rod, 1-k—roller Clamp plate, 1-m—loading roller, 1-n—loading pad (1-n), 2-winding guide loading device, 2-a—damping loading device, 2-aa—damping loading support, 2-ab —Damp loading hand wheel, 2-ac—Damp loading screw nut, 2-ad—Damp loading screw, 2-ae—Damp loading clamp bolt, 2-af—Damp loading bracket, 2-ag—Damp loading Main slide table, 2-ah—damp-loaded auxiliary slide table, 2-ai—damp-loaded clamping nut, 2-aj—two-way hydraulic pump, 2-ak—hydraulic pump spindle, 2-al—hydraulic pump coupling, 2-am—damping loaded countershaft, 2-an—damping loading main shaft, 2-ao—damping loading fixed wheel, 2-ap—damping loading traveling wheel, 2-aq—damping loading cushion, 2-ar—damping Loaded radial bearing, 2-as—damper loading shaft support, 2-b —Winding radius positioning device, 2-ba—radius positioning support, 2-bb—radius positioning handwheel, 2-bc—radius positioning screw nut, 2-bd—radius positioning screw, 2-be—radius positioning Support table, 2-bf-radius positioning main slide, 2-bg-radius positioning shaft support, 2-bh-radius positioning shaft, 2-bi-radius positioning tour wheel, 2-bj-radius positioning pad, 2-c—winding radius positioning plate, 2-ca—winding radius positioning hole, 3—support foundation, 4—stepless steel wire rope, 5—brake brake support plate, 6—brake brake, 7—motor, 8— Main shaft, 9—bearing seat, 10—reel, 11—brake disc, 12—friction pad, 13—guide wheel.

detailed description

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

As shown in FIG. 1, a stepless rope type vertical shaft hoisting joint testing device is mainly composed of a supporting foundation 3, a hydraulic loading device 1, a winding guide loading device 2, a stepless steel wire rope 4, a guide wheel 13 of a shaft hoist to be tested, The main shaft device of the shaft hoist to be tested composed of the motor 7, the bearing seat 9, the main shaft 8, the reel 10, the brake disc 11, the friction pad 12, the brake brake support plate 5 and the brake brake 6; The supporting foundation 3 is composed of two identical sub-foundations. The two sub-foundations are stepped and are arranged symmetrically along the horizontal and horizontal intervals to form the I platform, the II platform and the III platform; The main shaft device of the installed vertical shaft hoist is installed on the straddle, and the guide wheel 13 of the vertical shaft hoist is installed on the horizontal platform of the supporting foundation 3; A hydraulic loading device 1 is provided; at the inner bottom of the sandwich wall between the two sub-foundations of the support foundation 3, a winding guide loading device 2 is provided along the horizontal and horizontal direction, and the axis of the winding guide loading device 2 and the axis of the main shaft device are parallel to each other and in On the same vertical plane.

As shown in FIG. 2, the hydraulic loading device 1 includes a loading cylinder and a plurality of balancing cylinders. The loading cylinder includes a loading cylinder sleeve 1-b and a loading cylinder piston rod 1-d. The loading cylinder sleeve 1 -The front and back of b are provided with hydraulic loading supports 1-c. The multiple balancing cylinders each include a balancing cylinder sleeve 1-i and a balancing cylinder piston rod 1-j; the multiple balancing cylinders are spaced by positioning fixtures 1-h It is fixed on one side of the pitch positioning plate 1-f, the middle of the other side of the positioning plate 1-f is connected with the loading cylinder piston rod 1-d, and the top of the balancing cylinder piston rod 1-j is provided with A roller clamping plate 1-k, a loading roller 1-m is provided in the middle of the roller clamping plate 1-k, a loading pad 1-n is provided on a rim of the loading roller 1-m, and the loading pad 1-n is provided There are rope grooves, and the pressure-bearing chambers of all balancing cylinders are connected to each other through pipelines.

As shown in FIG. 3, the rope pitch positioning plate 1-f is divided into four pitches of 200mm, 250mm, 300mm, and 350mm along the vertical direction with four rows of pitch pitch positioning holes 1-e, and the same pitch is set along the horizontal direction Another set of pitch positioning holes 1-e are used to set positioning fixtures 1-h; the number of the positioning fixtures 1-h is four or six, depending on the specifications of the spindle device under test.

As shown in FIG. 4, the winding guide loading device 2 is composed of a damping loading device 2-a, a winding radius positioning device 2-b, and a winding radius positioning plate 2-c; a winding radius positioning plate 2-c In a semicircular ring shape, the two winding radius positioning plates 2-c are arranged horizontally and longitudinally, and the winding radius positioning plates 2-c are provided with a plurality of rows of winding radius positioning holes 2-ca along the circumferential direction of the inner ring, and a damping loading device 2-a is arranged horizontally and laterally at both ends of the winding radius positioning plate 2-c through the winding radius positioning hole 2-ca, and the winding radius positioning device 2-b is arranged along the circumferential direction through the winding radius positioning hole 2-ca The arc segment of the winding radius positioning plate 2-c. The hole density of the winding radius positioning hole 2-ca in the circumferential direction depends on the circular arc formed by the outer edges of the damping loading fixed wheel 2-ao and the radius positioning traveling wheel 2-bi to adapt to different diameters Test requirements for spindle devices.

As shown in FIG. 5, the damping loading device 2-a includes a damping loading support 2-aa, a damping loading hand wheel 2-ab, a damping loading screw nut 2-ac, a damping loading screw 2-ad, a damping Load clamping bolt 2-ae, damping loading support table 2-af, damping loading main slide 2-ag, damping loading auxiliary slide 2-ah, damping loading clamping nut 2-ai, bidirectional hydraulic pump 2-aj, Hydraulic pump main shaft 2-ak, hydraulic pump coupling 2-al, damping loading countershaft 2-am, damping loading main shaft 2-an, damping loading fixed wheel 2-ao, damping loading floating wheel 2-ap, damping loading The pad 2-aq, the damping-loading radial bearing 2-ar and the damping-loading shaft support 2-as are constituted; the damping-loading support table 2-af is provided on the damping-loading support 2-aa, and the damping-loading hand wheel 2-ab , The damping load screw nut 2-ac and the damping load screw 2-ad are arranged coaxially, the damping load handwheel 2-ab rotates to drive the damping load screw 2-ad to rotate, and then the damping load screw nut 2-ac is pushed back and forth Move; the damping load main slide table 2-ag is fixed to the damping load screw nut 2-ac, and can slide on the upper surface of the damping load supporting table 2-af in the axial direction; The secondary loading table 2-ah can slide freely on the upper surface of the damping loading support table 2-af along the axial direction of the damping loading screw 2-ad; there is damping between the two opposing damping loading main sliding tables 2-ag Loading spindle 2-an, one end of the damping loading spindle 2-an is connected to the hydraulic pump spindle 2-ak of the bidirectional hydraulic pump 2-aj through the hydraulic pump coupling 2-al, and the bidirectional hydraulic pump 2-aj is fixed on one side On the main table 2-ag of the damping load, the other end of the main shaft 2-an of the damping load is coaxially installed with the radial bearing 2-ar of the damping load, and the radial bearing 2-ar of the damping load is fixed to the support 2- as, the damping loading shaft support 2-as is fixed on the other side of the damping loading main slide 2-ag; the damping loading spindle 2-an is connected in series with the damping loading fixed wheel 2-ao, and the damping loading fixed wheel 2- ao is fixed on the damping loading spindle 2-an, the number and spacing of the damping loading fixed wheels 2-ao are equal to the number and spacing of the steel wire ropes of the tested spindle device; the opposite two damping loading sub-slides 2-ah intermediate clamp The damping loading countershaft 2-am is provided, and both ends of the damping loading countershaft 2-am are fixed to the damping loading shaft support On 2-as, the damping load shaft support 2-as is fixed on the damping load sub-slide 2-ah; the damping load counter shaft 2-am is installed with a damping load walking wheel 2-ap in series along the axial direction, damping load The moving wheel 2-ap can rotate along the axis of the damping loading secondary shaft 2-am. The number and spacing of the damping loading walking wheel 2-ap are equal to the number and spacing of the steel wire ropes of the tested main shaft device; the damping loading fixed wheel 2 -Ao and the damping loaded tour wheel 2-ap are provided with damping loading pads 2-aq, and the damping loading pads 2-aq are provided with rope grooves; the damping loading main slide 2-ag and the damping loading auxiliary slip The table 2-ah is provided with collinear through holes on both sides, and the damping loading clamping bolt 2-ae passes through the through hole from one end to connect the damping loading main slide 2-ag and the damping loading auxiliary slide 2-ah at Together, and tighten the damping clamping nut 2-ai at the other end, so that the damping loading fixed wheel 2-ao and the damping loading walking wheel 2-ap can clamp the wire rope under a certain squeezing force.

As shown in FIG. 6, the winding radius positioning device 2-b includes a radius positioning support 2-ba, a radius positioning hand wheel 2-bb, a radius positioning screw nut 2-bc, and a radius positioning screw 2-bd , Radius positioning support table 2-be, radius positioning main slide table 2-bf, radius positioning shaft support 2-bg, radius positioning shaft 2-bh, radius positioning tour wheel 2-bi and radius positioning pad 2-bj Composition; radius positioning support 2-be is set on the radius positioning support 2-ba, the radius positioning hand wheel 2-bb, the radius positioning screw nut 2-bc and the radius positioning screw 2-bd are coaxially installed, and the radius positioning The rotation of the hand wheel 2-bb drives the rotation of the radius positioning screw 2-bd, which in turn pushes the radius positioning screw nut 2-bc to move back and forth; the radius positioning main slide 2-bf is fixed to the radius positioning screw nut 2-bc, which can The axis slides on the upper surface of the radius positioning support 2-be; the two opposite radial positioning main slides 2-bf are sandwiched by a radius positioning axis 2-bh, and both ends of the radius positioning axis 2-bh are positioned by the radius The shaft supports 2-bg are respectively fixed to the radius positioning main slide table 2-bf; the radius positioning shaft 2-bh is installed in series with a radial positioning tour in the axial direction The moving wheel 2-bi, the radius positioning walking wheel 2-bi can rotate axially along the radius positioning axis 2-bh, the number and spacing of the radius positioning moving wheels 2-bi are equal to the number and spacing of the steel wire ropes of the tested spindle device ; The outer edge of the radius positioning tour wheel 2-bi is provided with a radius positioning pad 2-bj, and the radius positioning pad 2-bj is provided with a rope groove.

A testing method for stepless rope type vertical shaft hoisting, as shown in Figure 7, includes the following steps:

(a) The hydraulic loading support 1-c is vertically installed on both ends of the loading cylinder liner 1-b, and the hydraulic loading positioning bolt 1-a is installed on both ends of the hydraulic loading support 1-c, and the loading cylinder piston rod 1- d The top of the d is installed with a pitch positioning plate 1-f. According to the number and spacing of the steel wire ropes of the spindle device under test, one end of the positioning jig 1-h with the same number of steel wire ropes is positioned via the pitch through the positioning pin 1-g The hole 1-e is fixed on the rope pitch positioning plate 1-f, the other end of the positioning fixture 1-h is fixed with a balance cylinder sleeve 1-i, the balance cylinder piston rod 1-j is equipped with a roller clamping plate 1-k at the top, and a roller clamping plate The loading roller 1-m is installed in the middle of 1-k, and the loading pad 1-n is installed on the rim of the loading roller 1-m, and the pressure chamber of the balancing cylinder is connected through the pipeline to assemble the hydraulic loading device 1;

(b) Install the hydraulic loading device 1 on the Ⅲ platform of the supporting foundation 3 by horizontally loading the hydraulic loading positioning bolts 1-a; install the winding on the inner bottom of the sandwich wall of the two sub-foundations of the supporting foundation 3 in the horizontal and transverse direction The radius positioning plate 2-c, the axis of the winding radius positioning plate 2-c and the axis of the spindle device are parallel to each other and on the same vertical plane;

(c) Install the damping loading support 2-af on the damping loading support 2-aa, the damping loading handwheel 2-ab, the damping loading screw nut 2-ac and the damping loading screw 2-ad are coaxially installed, Fix the damping loading main slide 2-ag on the damping loading screw nut 2-ac, and install the damping loading pad 2-aq on the outer edges of the damping loading fixed wheel 2-ao and the damping loading walking wheel 2-ap, Install the damping loading fixed wheel 2-ao in series with the damping loading spindle 2-an, the number and spacing of the damping loading fixed wheel 2-ao are equal to the number and spacing of the steel ropes of the tested spindle device, and the damping loading fixed wheel 2- ao is fixed on the damping loading spindle 2-an, one end of the damping loading spindle 2-an is connected to the hydraulic pump spindle 2-ak of the bidirectional hydraulic pump 2-aj through the hydraulic pump coupling 2-al, and the bidirectional hydraulic pump 2- aj is fixed on one side of the damping loading main slide 2-ag, the other end of the damping loading spindle 2-an is installed coaxially with the damping loading radial bearing 2-ar, and the damping loading radial bearing 2-ar is fixed to the damping loading Shaft support 2-as, damping loading The shaft support 2-as is fixed on the other side of the damping loading main slide 2-ag, in the damping The loading countershaft 2-am is installed in series along the axial direction to install the damping load walking wheel 2-ap. The number and spacing of the damping load walking wheel 2-ap are equal to the number and spacing of the steel wire ropes of the tested spindle device. The moving wheel 2-ap can rotate along the axis of the damping loading countershaft 2-am. Both ends of the damping loading countershaft 2-am are fixed to the damping loading shaft support 2-as, and the damping loading shaft support 2-as is fixed at On the damping loading sub-slide 2-ah, the damping loading clamping bolt 2-ae is passed through the through hole from one end to connect the damping-loading main sliding table 2-ag and the damping-loading auxiliary sliding table 2-ah together, and in another One end is pre-tightened by the damping loading clamping nut 2-ai and assembled into two damping loading devices 2-a;

(d) Install the radius positioning support 2-be on the radius positioning support 2-ba, the radius positioning hand wheel 2-bb, the radius positioning screw nut 2-bc and the radius positioning screw 2-bd are coaxially installed, Fix the radius positioning main slide 2-bf on the radius positioning screw nut 2-bc, install the radius positioning pad 2-bj on the outer edge of the radius positioning tour wheel 2-bi, and the radius positioning tour wheel 2-bi The number and spacing are equal to the number and spacing of the steel wire ropes of the spindle device under test. Install the radius positioning travel wheel 2-bi in series along the radial positioning shaft 2-bh, and the radius positioning travel wheel 2-bi can The radius positioning shaft 2-bh rotates axially; the two opposite radial positioning main slides 2-bf are sandwiched by a radius positioning shaft 2-bh, and both ends of the radius positioning shaft 2-bh pass through the radius positioning shaft support 2 -bg are respectively fixed to the radius positioning main slide 2-bf, assembled into several winding radius positioning devices 2-b, the number of which depends on the diameter of the spindle device under test;

(e) Install the main shaft device of the shaft hoist under vertical horizontal stride on the support foundation 3I platform, the bearing block 9 is installed on the support base 3I platform along the horizontal transverse span, the motor 7, main shaft 8 and reel 10 are the same The shaft is installed, the brake disc 11 is installed on the outer edge of the reel 10, the friction pad 12 is pressed against the outer shell of the reel 10 in the circumferential direction, the brake brake support plate 5 is mounted on the support foundation 3I platform along the horizontal and horizontal ride Distributed on both sides of the main shaft device, a brake brake 6 is installed on the brake brake support plate 5 along the circumferential direction of the rim of the brake disk 11, so that it can clamp the brake disk 11 during operation, thereby braking the main shaft device, in The guide wheel 13 of the shaft hoist to be tested is installed on the supporting foundation 3Ⅱ platform along the horizontal transverse stride;

(f) Pass the electrodeless wire rope 4 through the drum 10, the guide wheel 13 and the winding guide loading device 2 in sequence, and place the upper part of the electrodeless wire rope 4 in the friction groove 12 of the outer shell of the drum 10 and the rope groove of the guide wheel 13 , The lower part of the electrodeless steel rope 4 hangs on the periphery of the winding radius positioning plate 2-c;

(g) The damping loading device 2-a is fixed to both ends of the winding radius positioning plate 2-c in the horizontal direction through the winding radius positioning hole 2-ca, and the winding radius positioning device 2-b is fixed to the roll in the circumferential direction The arc segment around the radius positioning plate 2-c, according to the diameter D of the reel 10 of the shaft hoist under test, turn the damping loading handwheel 2-ab to drive the damping loading screw 2-ad to rotate, and then push the damping loading screw nut 2-ac moves back and forth, at this time, the damping loading spindle 2-an moves back and forth along the radius of the winding radius positioning plate 2-c until the outer edge of the damping loading fixed wheel 2-ao is away from the axis of the winding radius positioning plate 2-c The center distance is D. Place the lower part of the electrodeless wire rope 4 in the rope groove of the damping load fixed wheel 2-ao. Turn the radius positioning hand wheel 2-bb to rotate the radius positioning screw 2-bd, and then push the radius positioning screw nut 2-bc moves back and forth, at this time the radius positioning axis 2-bh moves back and forth along the radius of the winding radius positioning plate 2-c until the outer edge of the radius positioning tour wheel 2-bi is away from the winding radius positioning plate 2-c The axis distance is D, so that the lower part of the electrodeless steel rope 4 is placed in the rope groove of the radius positioning traveling wheel 2-bi;

(h) Adjust the oil pressure at the outlet of the loading cylinder with a small oil pressure, start the hydraulic loading device 1, control the piston rod 1-d of the loading cylinder to extend, and load the roller 1-m to press the infinite steel wire rope 4 for pre-tensioning, at this time The infinite steel wire rope 4 forms a closed loop through the rope grooves of the friction pad 12, the guide wheel 13, the damping loading pad 2-aq and the radius positioning pad 2-bj, and tighten the damping loading clamping bolt 2-ae to make the damping loading fixed wheel 2- ao and damping load travel wheel 2-ap can tightly clamp the electrodeless steel rope 4, at this time the bidirectional hydraulic pump 2-aj provides load damping when the electrodeless steel rope 4 is driven;

(i) Set the vertical distance between the action point of the loading roller 1-m and the wire rope contact point of the reel 10 and the damping loading fixed wheel 2-ao wire rope contact point, adjust the oil pressure of the oil outlet of the loading cylinder and the two-way hydraulic pump 2- aj Pressure port oil pressure, the loading cylinder acts on the electrodeless wire rope 4 with a force F, and the bidirectional hydraulic pump acts on the electrodeless wire rope 4 with a torque M. At this time, the angle between the electrodeless wire rope 4 and the vertical direction is α. The wire rope 4 runs counterclockwise, then the tension of the stepless wire rope 4 on the rising and falling sides is:

In the formula: r is the 2-a-k radius of the main shaft of the hydraulic pump,

By simulating the light and heavy load side load of the reel 10, the load on both sides of the reel 10 under various working conditions is simulated;

(j) Carry out the bearing performance test of the spindle device, the anti-skid performance test of the friction pad, and the brake performance test of the brake,

The joint debugging test of the shaft hoist under test was completed, and the bearing performance of the main shaft device, the anti-skid performance of the friction pad, and the braking performance of the brake were reliably evaluated.

The testing of the bearing performance of the spindle device mainly includes crack detection and strength verification. At this time, the brake 6 clamps the brake disc 11 and shuts down the motor 7: first, when detecting whether the spindle device has a crack, Install the acoustic emission sensor in the shell of the drum 10, the supporting ring, the reinforcing ribs, the spokes, and the riveting place of the main shaft 8 and other places where cracks are prone to simulate the force of the reel 10 under the no-load and heavy load of the main shaft device State, adjust the hydraulic pressure of the oil outlet of the hydraulic loading device 1 and the hydraulic pressure of the two-way hydraulic pump 2-aj, start the hydraulic loading device 1 and the two-way hydraulic pump 2-aj, the infinite wire rope 4 is tensioned, and the pressure chamber is connected The balance cylinder makes the tension of the multiple electrodeless steel ropes 4 the same. The hydraulic loading device 1 and the two-way hydraulic pump 2-aj are used to load the reel 10 within the range of the wrap angle. To determine whether there is a crack in the corresponding position of the spindle device; second, when detecting whether the strength of the spindle device meets the requirements, install the acoustic emission sensor on the shell of the reel 10, the spoke plate, and both ends of the spindle 8 are easy to produce The position of the elastic deformation, simulate the stress state of the reel 10 under extreme working conditions such as jamming and secondary loading of the spindle device, adjust the oil pressure of the oil outlet of the hydraulic loading device 1 and the oil pressure of the bidirectional hydraulic pump 2-aj Hydraulic pressure, starting hydraulic loading device 1 and bidirectional hydraulic pump 2-aj, stepless steel wire rope 4 tensioning, balancing cylinder connected to the pressure chamber makes the tension of multiple electrodeless steel wire ropes 4 the same, comparative analysis of elastic stress wave changes at the test points before and after loading Whether the allowable threshold is exceeded, to 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;

(k) When testing the anti-skid performance of the friction pad, it mainly includes two aspects: static friction test and dynamic friction test: first, when the static friction test is performed, the brake 6 clamps the brake disc 11, the motor 7 is turned off, and the simulation volume The tension difference between the two sides of the steel wire rope of the barrel 10 under extreme conditions such as overload and secondary loading, adjust the oil pressure of the oil outlet of the hydraulic loading device 1 and the oil pressure of the bidirectional hydraulic pump 2-aj, and start the hydraulic loading device 1 And two-way hydraulic pump 2-aj, use micro-displacement sensor to detect whether there is relative sliding between the electrodeless wire rope 4 and the friction pad 12 at this time, so as to determine whether the friction pad can meet the anti-skid requirements under static conditions; second, when dynamic friction is performed During the test, the brake 6 clamps the brake disc 11, shuts off the motor 7, simulates the tension difference between the steel wire rope on both sides of the reel 10 under heavy load, and adjusts the oil pressure and bidirectional hydraulic pressure of the hydraulic loading device 1 The oil pressure of the pump 2-aj starts the hydraulic loading device 1 and the bidirectional hydraulic pump 2-aj, starts the motor 7, opens the brake 6, and the motor 7 controls the reel 10 to start at an angular acceleration a ₁ and angular deceleration a ₂ Stop, use micro displacement sensor The device detects whether the creeping slippage between the electrodeless wire rope 4 and the friction pad 12 is within the allowable range under the corresponding angular acceleration, so as to determine whether the friction pad 12 can meet the anti-skid requirements under dynamic conditions;

(l) When testing the braking performance of the brake, it mainly includes static braking test and dynamic braking test: first, when performing static braking test, the brake 6 clamps the brake disc 11, Turn off the motor 7, simulate the tension difference between the two sides of the steel wire rope of the reel 10 under extreme conditions, adjust the oil pressure of the oil outlet of the hydraulic loading device 1 and the oil pressure of the two-way hydraulic pump 2-aj, and start the hydraulic loading device 1 and the two-way hydraulic pump 2-aj, detect whether there is relative sliding between the brake 6 and the brake disc 11 at this time, so as to determine whether the brake 6 can effectively brake the spindle device under static conditions;

Second, when the dynamic brake test is performed, the brake 6 clamps the brake disc 11, shuts down the motor 7, simulates the tension difference between the steel ropes on both sides of the drum 10 under heavy load, and adjusts the hydraulic loading device 1 The oil pressure at the outlet and the oil pressure at the two-way hydraulic pump 2-aj start the hydraulic loading device 1 and the two-way hydraulic pump 2-aj, start the motor 7, open the brake 6, and the motor 7 controls the reel 10 at an angle The acceleration a ₁ starts and reaches the speed v, the motor 7 is turned off, the brake 6 is started, and the idle travel time of the brake and the brake deceleration are detected within the allowable range at this time, thereby judging that the brake system can dynamically Whether to effectively brake the spindle device;

(m) Finalize the joint debugging test of the shaft hoist under test, and make a reliable evaluation of the bearing performance of the main shaft device, the anti-skid performance of the friction pad, and the braking performance of the brake.

Claims (10)

1. A stepless rope type vertical shaft hoisting joint testing device includes a guide wheel (13) of a shaft hoist to be tested, a motor (7), a bearing housing (9), a main shaft (8), a reel (10), and a brake The main shaft device of the shaft hoist under test composed of the disc (11), the friction pad (12), the brake brake support plate (5) and the brake brake (6); characterized in that it also includes a support foundation (3), The hydraulic loading device (1), the winding guide loading device (2) and the electrodeless steel wire rope (4), the supporting foundation (3) is composed of two identical sub-foundations, the two sub-foundations are stepped and spaced horizontally and horizontally Symmetrically arranged to form the Ⅰ platform, Ⅱ platform and Ⅲ platform; the main shaft device of the vertical shaft hoist installed on the Ⅰ platform of the supporting foundation (3) along the horizontal transverse stride, on the Ⅱ platform of the supporting foundation (3) The guide wheel (13) of the shaft hoist to be tested is installed along the horizontal transverse stride; a hydraulic loading device (1) is provided along the horizontal transverse riding on the Ⅲ platform of the supporting foundation (3); two are supported on the supporting foundation (3) The inner bottom of the clamping wall between the sub-foundations is provided with a winding guide loading device (2) in a horizontal and horizontal direction, and the winding guide loading device (2) The spindle axis line and the apparatus parallel to each other on the same vertical plane;

   The hydraulic loading device (1) includes a loading cylinder and a plurality of balancing cylinders. The loading cylinder includes a loading cylinder sleeve (1-b) and a loading cylinder piston rod (1-d). The loading cylinder sleeve (1 1-b) There are hydraulic loading supports (1-c) at the front and back, and the multiple balancing cylinders each include a balancing cylinder sleeve (1-i) and a balancing cylinder piston rod (1-j); multiple balancing The cylinders are respectively fixed on one side of the rope pitch positioning plate (1-f) via positioning fixtures (1-h), and the middle of the other side of the positioning plate (1-f) is connected to the loading cylinder piston rod (1-d) As a whole, the top of the piston rod (1-j) of the balance cylinder is provided with a roller clamping plate (1-k), and a loading roller (1-m) is arranged in the middle of the roller clamping plate (1-k). 1-m) The loading rim (1-n) is provided on the rim, the loading pad (1-n) is provided with a rope groove, and the pressure-bearing chambers of all balancing cylinders are connected to each other through a pipeline;

   The winding guide loading device (2) includes a damping loading device (2-a), a winding radius positioning device (2-b) and a winding radius positioning plate (2-c); the winding radius positioning The plate (2-c) has a semi-circular ring shape, the two winding radius positioning plates (2-c) are arranged horizontally and longitudinally, and the winding radius positioning plates (2-c) are provided with multiple rows of windings along the circumferential direction of the inner ring Radius positioning hole (2-ca), the damping loading device (2-a) is arranged horizontally and laterally at both ends of the winding radius positioning plate (2-c) through the winding radius positioning hole (2-ca), and the winding radius is positioned The device (2-b) is arranged on the circular arc section of the winding radius positioning plate (2-c) through the winding radius positioning hole (2-ca) in the circumferential direction.
2. The electrodeless rope type vertical shaft hoisting joint testing device according to claim 1, wherein the damping loading device (2-a) includes a damping loading support (2-aa) and a damping loading handwheel (2- ab), damping load screw nut (2-ac), damping load screw (2-ad), damping load clamping bolt (2-ae), damping load support table (2-af), damping load main slide (2-ag), damping loading auxiliary slide (2-ah), damping loading clamping nut (2-ai), bidirectional hydraulic pump (2-aj), hydraulic pump main shaft (2-ak), hydraulic pump coupling (2-al), damping loading countershaft (2-am), damping loading main shaft (2-an), damping loading fixed wheel (2-ao), damping loading travel wheel (2-ap), damping loading lining Pad (2-aq), damping loaded radial bearing (2-ar) and damping loading shaft support (2-as); the damping loading support platform (2-af) is provided on the damping loading support (2-aa) ), The damping load handwheel (2-ab), the damping load screw nut (2-ac) and the damping load screw (2-ad) are arranged coaxially, and the damping load handwheel (2-ab) rotates to drive The damping load screw (2-ad) rotates to push the damping load screw nut (2-ac) back and forth The damping loading main sliding table (2-ag) is fixed to the damping loading screw nut (2-ac), and can slide on the upper surface of the damping loading support table (2-af) in the axial direction; the damping loading pair The sliding table (2-ah) can slide freely on the upper surface of the damping loading supporting table (2-af) along the axial direction of the damping loading screw (2-ad); the middle of the two opposite damping loading main sliding tables (2-ag) The clamp is provided with a damping loading spindle (2-an), and one end of the damping loading spindle (2-an) is connected to the hydraulic pump spindle of the bidirectional hydraulic pump (2-aj) through a hydraulic pump coupling (2-al) (2-ak), the bidirectional hydraulic pump (2-aj) is fixed on one side of the damping loading main slide (2-ag), and the other end of the damping loading spindle (2-an) is connected to the damping loading radial The bearing (2-ar) is installed coaxially, the damping loaded radial bearing (2-ar) is fixed on the damping loading shaft support (2-as), and the damping loading shaft support (2-as) is fixed on On the other side of the damping loading main slide (2-ag); the damping loading spindle (2-an) is connected in series with a damping loading fixed wheel (2-ao), the damping loading fixed wheel (2-ao) ) Fixed on the damping loading spindle (2-an), damping loading solid The number and spacing of the wheels (2-ao) are equal to the number and spacing of the steel wire ropes of the spindle device under test; there are two damping load auxiliary slides (2-ah), and two opposite damping load auxiliary slides ( 2-ah) The intermediate clamping is provided with a damping loading countershaft (2-am), both ends of the damping loading countershaft (2-am) are fixed on the damping loading shaft support (2-as), and the damping loading shaft support (2-as) is fixed on the damping load auxiliary slide (2-ah); the damping load auxiliary shaft (2-am) is installed with a damping load travel wheel (2-ap) in series along the axial direction, and the damping load The walking wheel (2-ap) can rotate along the axis of the damping load secondary shaft (2-am), and the number and spacing of the damping loaded walking wheel (2-ap) are equal to the number and spacing of the steel wire ropes of the main shaft device under test ; The outer edges of the damping loading fixed wheel (2-ao) and the damping loading swimming wheel (2-ap) are provided with a damping loading pad (2-aq), and the damping loading pad (2-aq) Equipped with rope grooves; the damping loading main slide (2-ag) and the damping loading auxiliary slide (2-ah) are provided with collinear through holes on both sides, and the damping loading clamping bolt (2-ae) is from one end Through the through hole, the damping loading main slide (2-ag) and the damping loading auxiliary slide (2 -ah) connected together, the other end of the damping load clamping bolt (2-ae) is tightened by the damping load clamping nut (2-ai), so that the damping load fixed wheel (2-ao) and the damping load travel wheel (2 -ap) Clamp the wire rope after being pressed.
3. The electrodeless rope type vertical shaft hoisting joint testing device according to claim 1, characterized in that the winding radius positioning device (2-b) includes a radius positioning support (2-ba) and a radius positioning hand wheel ( 2-bb), radius positioning screw nut (2-bc), radius positioning screw (2-bd), radius positioning support table (2-be), radius positioning main slide (2-bf), radius positioning shaft Support (2-bg), radius positioning shaft (2-bh), radius positioning tour wheel (2-bi) and radius positioning pad (2-bj); the radius positioning support platform (2-be) is set On the radius positioning support (2-ba), the radius positioning hand wheel (2-bb), the radius positioning screw nut (2-bc) and the radius positioning screw (2-bd) are coaxially installed, and the radius positioning The rotation of the hand wheel (2-bb) drives the radius positioning screw (2-bd) to rotate, thereby pushing the radius positioning screw nut (2-bc) to move forward and backward; the radius positioning main slide (2-bf) is fixed to the radius The positioning screw nut (2-bc) can slide on the upper surface of the radius positioning support table (2-be) in the axial direction; the two radial positioning main slide tables (2-bf) are provided with a radius positioning shaft in the middle between them (2-bh), the radius positioning axis (2-bh) The ends are respectively fixed to the radius positioning main slide table (2-bf) through the radius positioning shaft support (2-bg); the radius positioning shaft (2-bh) is installed in series with the radius positioning tour wheel (2- bi), the radius positioning traveling wheel (2-bi) can rotate along the radius positioning axis (2-bh), and the number and spacing of the radius positioning traveling wheel (2-bi) are equal to the measured spindle device The number and spacing of the steel wire ropes; the outer edge of the radius positioning traveling wheel (2-bi) is provided with a radius positioning pad (2-bj), and the radius positioning pad (2-bj) is provided with a rope groove.
4. The electrodeless rope type vertical shaft hoisting joint testing device according to claim 1, characterized in that the hole density of the winding radius positioning hole (2-ca) in the circumferential direction depends on the damping loading fixed wheel (2-ao ) And the circular arc formed by the outer edge of the radius positioning travel wheel (2-bi) to meet the testing requirements of different diameter spindle devices.
5. The electrodeless rope type vertical shaft hoisting joint testing device according to claim 1, wherein the number of the plurality of balancing cylinders is four or six, depending on the specifications of the main shaft device under test.
6. The electrodeless rope type vertical shaft hoisting joint testing device according to claim 1, characterized in that: the rope pitch positioning plate (1-f) is divided into four intervals of 200mm, 250mm, 300mm and 350mm in the vertical direction. There are four rows of pitch spacing holes (1-e), and another set of pitch spacing holes (1-e) with the same pitch are provided in the horizontal direction, which are used to set positioning fixtures (1-h).
7. A test method using the electrodeless rope type vertical shaft hoisting joint testing device of claim 1, 2 or 3, characterized by comprising the following steps:

   (a) Install the hydraulic loading support (1-c) vertically at both ends of the loading cylinder liner (1-b), and install the hydraulic loading positioning bolts (1-a) at both ends of the hydraulic loading support (1-c) ), The top of the loading cylinder piston rod (1-d) is vertically installed with a rope pitch positioning plate (1-f). According to the number and spacing of the steel wire ropes of the spindle device under test, the positioning pin (1-g) will be connected to the number of steel wire ropes. One end of the same number of positioning fixtures (1-h) is fixed to the rope pitch positioning plate (1-f) through the rope pitch positioning holes (1-e), and the balance cylinder is fixed to the other end of the positioning fixture (1-h) The sleeve (1-i), the balance cylinder piston rod (1-j) is equipped with a roller clamping plate (1-k) at the top, and a loading roller (1-m) and a loading roller (1-m) are installed in the middle of the roller clamping plate (1-k) ), A loading pad (1-n) is installed on the rim, the pressure chamber of the balance cylinder is connected through a pipeline, and a hydraulic loading device (1) is assembled;

   (b) Install the hydraulic loading device (1) on the Ⅲ platform of the supporting foundation (3) by horizontally loading the hydraulic loading positioning bolts (1-a); inside the sandwich wall of the two sub-foundations of the supporting foundation (3) The winding radius positioning plate (2-c) is installed at the bottom in a horizontal and horizontal direction, and the axis of the winding radius positioning plate (2-c) and the axis of the spindle device are parallel to each other and on the same vertical plane;

   (c) Install the damping loading support table (2-af) on the damping loading support (2-aa), the damping loading handwheel (2-ab), the damping loading screw nut (2-ac) and the damping loading wire The rod (2-ad) is installed coaxially, the damping loading main slide (2-ag) is fixed on the damping loading screw nut (2-ac), and the damping loading fixed wheel (2-ao) and the damping loading swim A damping loading pad (2-aq) is installed on the outer edge of the wheel (2-ap), and a damping loading fixed wheel (2-ao) and a damping loading fixed wheel (2-ao) are installed in series on the damping loading main shaft (2-an) ) The number and spacing are equal to the number and spacing of the steel wire ropes of the tested spindle device. Fix the damping loading fixed wheel (2-ao) on the damping loading spindle (2-an). The damping loading spindle (2-an) One end is connected to the hydraulic pump main shaft (2-ak) of the two-way hydraulic pump (2-aj) through the hydraulic pump coupling (2-al), and the two-way hydraulic pump (2-aj) is fixed to the side of the damping loading main slide On the table (2-ag), the other end of the damping loaded spindle (2-an) is installed coaxially with the damping loaded radial bearing (2-ar), and the damped loaded radial bearing (2-ar) is fixed to the damped loaded shaft support Seat (2-as), the damping loading shaft support (2-as) is fixed on On one side of the damping loading main slide (2-ag), the damping loading idler (2-ap) is installed in series along the axial direction of the damping loading countershaft (2-am). The number and spacing of ap) are equal to the number and spacing of the steel wire ropes of the main shaft device under test. The damping load travel wheel (2-ap) can rotate along the axis of the damping load secondary shaft (2-am). 2-am) Both ends are fixed on the damping loading shaft support (2-as), the damping loading shaft support (2-as) is fixed on the damping loading sub-slide (2-ah), and the damping loading clamp is used The bolt (2-ae) passes through the through hole from one end to connect the damping loading main slide (2-ag) and the damping loading sub-slide (2-ah) together, and clamps the nut (2 -ai) pre-tighten and assemble two damping loading devices (2-a);

   (d) Install the radius positioning support (2-be) on the radius positioning support (2-ba), the radius positioning handwheel (2-bb), the radius positioning screw nut (2-bc) and the radius positioning wire The rod (2-bd) is installed coaxially, the radius positioning main slide (2-bf) is fixed on the radius positioning screw nut (2-bc), and the outer edge of the radius positioning travel wheel (2-bi) is installed The radius positioning pad (2-bj), the number and spacing of the radius positioning traveling wheels (2-bi) are equal to the number and spacing of the steel wire ropes of the spindle device under test, and the radial positioning axis (2-bh) is along the axial direction Install the radius positioning tour wheel (2-bi) in series, the radius positioning tour wheel (2-bi) rotates along the axis of the radius positioning axis (2-bh); the opposite two radius positioning main slides (2-bf) ) A radius positioning shaft (2-bh) is set in the middle, and both ends of the radius positioning shaft (2-bh) are fixed to the radius positioning main slide (2-bf) through the radius positioning shaft support (2-bg). On the assembly of several winding radius positioning devices (2-b), the number of radius positioning devices (2-b) depends on the diameter of the spindle device under test;

   (e) Install the main shaft device of the shaft hoist under vertical horizontal stride on the I platform of the supporting foundation (3), and the bearing seat (9) is mounted on the I platform of the supporting foundation (3) along the horizontal transverse span. The motor (7), the main shaft (8), and the reel (10) are coaxially installed, the brake disc (11) is installed on the outer edge of the reel (10), and the friction pad (12) is pressed against the reel in the circumferential direction ( 10) On the housing, the brake brake support plate (5) is mounted on the I platform of the support foundation (3) along the horizontal and horizontal span and distributed on both sides of the main shaft device, and brakes on the brake brake support plate (5) The brake rim (6) is installed circumferentially on the rim of the disc (11), so that it can clamp the brake disc (11) during operation, thereby braking the main shaft device, horizontally and horizontally on the Ⅱ platform of the supporting foundation (3) The riding wheel is equipped with the guide wheel (13) of the shaft hoist under test;

   (f) Pass the electrodeless wire rope (4) through the drum (10), the guide wheel (13) and the winding guide loading device (2) in sequence, and place the upper part of the electrodeless wire rope (4) on the outer shell of the drum (10) In the rope grooves of the friction pad (12) and the guide wheel (13), the lower part of the electrodeless steel rope (4) hangs down the periphery of the winding radius positioning plate (2-c);

   (g) Fix the damping loading device (2-a) on both ends of the winding radius positioning plate (2-c) through the winding radius positioning hole (2-ca), and fix the winding radius positioning device (2-c) b) The arc segment fixed on the winding radius positioning plate (2-c) along the circumferential direction, according to the diameter D of the drum (10) of the shaft hoist under test, rotating the damping loading hand wheel (2-ab) to drive the damping loading The screw (2-ad) rotates to push the damping load screw nut (2-ac) forward and backward, at this time the damping load spindle (2-an) moves back and forth along the radial direction of the winding radius positioning plate (2-c), Until the outer edge of the damping loading fixed wheel (2-ao) is at a distance of D from the axis of the winding radius positioning plate (2-c), place the lower part of the electrodeless wire rope (4) on the damping loading fixed wheel (2-ao) In the rope groove, turn the radius positioning hand wheel (2-bb) to drive the radius positioning screw (2-bd) to rotate, and then push the radius positioning screw nut (2-bc) to move forward and backward, and the radius positioning shaft (2- bh) Move back and forth along the radius of the winding radius positioning plate (2-c) until the outer edge of the radius positioning travel wheel (2-bi) is at a distance of D from the axis of the winding radius positioning plate (2-c), Place the lower part of the electrodeless wire rope (4) in half Positioning the floating pulley rope groove (2-b-i) a;

   (h) Adjust the oil pressure at the outlet of the loading cylinder with a small oil pressure, start the hydraulic loading device (1), control the piston rod (1-d) of the loading cylinder to extend, and the loading roller (1-m) presses the infinite steel wire rope (4) ) Pre-tensioning, at this time the infinite steel wire rope (4) is formed by the rope groove of the friction pad (12), the guide wheel (13), the damping loading pad (2-aq) and the radius positioning pad (2-bj) Closed loop, tighten the damping load clamping bolt (2-ae) so that the damping load fixed wheel (2-ao) and the damping load walking wheel (2-ap) can tightly clamp the infinite steel wire rope (4), at this time the bidirectional hydraulic pump (2-aj) Provide load damping during the stepless wire rope (4) transmission;

   (i) Set the vertical distance between the action point of the loading roller (1-m) and the wire rope contact point of the drum (10) and the wire rope contact point of the damping loading fixed wheel (2-ao) to adjust the oil pressure at the oil outlet of the loading cylinder And two-way hydraulic pump (2-aj) pressure port oil pressure, the loading cylinder acts on the electrodeless wire rope (4) with force F, the two-way hydraulic pump acts on the electrodeless wire rope (4) with torque M, at this time the electrodeless wire rope (4) and The angle in the vertical direction is α. At this time, it is necessary to simulate the electrodeless wire rope (4) to run counterclockwise, then the tension of the electrodeless wire rope (4) on the rising and falling sides is:

   

   Where: r is the radius of the hydraulic pump spindle (2-a-k),

   In this way, the light and heavy load side load of the reel (10) is simulated, and then the load on both sides of the reel (10) under various working conditions is simulated;

   (j) Carry out the bearing performance test of the spindle device, the anti-skid performance test of the friction pad, and the brake performance test of the brake,

   Finally, the joint debugging test of the shaft hoist under test was completed, and the bearing performance of the main shaft device, the anti-skid performance of the friction pad, and the braking performance of the brake were reliably evaluated.
8. The stepless joint shaft lift test method according to claim 7, characterized in that: the bearing performance test of the main shaft device mainly includes crack detection and strength check. At this time, the brake (6) Clamp the brake disc (11), shut down the motor (7):

   First, when detecting whether there is a crack in the main shaft device, install the acoustic emission sensor at the position where the crack is easily generated in the shell of the reel (10), the supporting ring, the reinforcing rib, the web, and the riveting place of the main shaft (8). Simulate the stress state of the reel (10) of the spindle device under no-load and heavy load, adjust the oil pressure of the oil outlet of the hydraulic loading device (1) and the oil pressure of the bi-directional hydraulic pump (2-aj), and start The hydraulic loading device (1) and the bidirectional hydraulic pump (2-aj), the stepless steel wire rope (4) is tensioned, and the balancing cylinder connected to the pressure chamber makes the tension of the plurality of stepless steel wire ropes (4) the same, using the hydraulic loading device (1) Combine the two-way hydraulic pump (2-aj) to load the reel (10) within the envelope angle, compare and analyze whether the elastic stress wave of the detection point before and after loading changes rapidly, and determine whether there is a crack in the corresponding position of the main shaft device;

   Second, when detecting whether the strength of the spindle device meets the requirements, install the acoustic emission sensor at the position of the drum shell (10), the spoke plate, and both ends of the spindle (8) that are prone to elastic deformation, to simulate the spindle device stuck in Adjust the oil pressure of the oil outlet of the hydraulic loading device (1) and the oil pressure of the two-way hydraulic pump (2-aj) under extreme working conditions such as tank and secondary loading, and start The hydraulic loading device (1) and the bidirectional hydraulic pump (2-aj), the infinite steel wire rope (4) is tensioned, and the balancing cylinder connected to the pressure chamber makes the tension of multiple infinite steel wire ropes (4) the same. Compare and analyze the detection points before and after loading Whether the change of the elastic 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.
9. The stepless joint shaft lift test method according to claim 7, characterized in that: performing the anti-skid performance test of the friction pad mainly includes static friction test and dynamic friction test:

   First, when conducting a static friction test, the brake (6) clamps the brake disc (11), shuts down the motor (7), and simulates the two conditions of the reel (10) under extreme conditions such as overload and secondary loading. The tension difference of the side wire rope adjusts the hydraulic pressure of the oil outlet of the hydraulic loading device (1) and the hydraulic pressure of the bidirectional hydraulic pump (2-aj), and starts the hydraulic loading device (1) and the bidirectional hydraulic pump (2-aj) , Use micro-displacement sensor to detect whether there is relative sliding between the electrodeless steel rope (4) and the friction pad (12) at this time, so as to determine whether the friction pad can meet the anti-skid requirements under static conditions;

   Second, when the dynamic friction test is performed, the brake (6) clamps the brake disc (11), shuts down the motor (7), and simulates the tension difference between the steel wire rope on both sides of the drum (10) under heavy load conditions. Adjust the oil pressure of the oil outlet of the hydraulic loading device (1) and the oil pressure of the bidirectional hydraulic pump (2-aj), start the hydraulic loading device (1) and the bidirectional hydraulic pump (2-aj), and start the motor (7 ), The brake (6) is opened, the motor (7) controls the drum (10) to start with angular acceleration a ₁ and angular deceleration a _{2 to} stop, and the micro-displacement sensor is used to detect the infinite steel wire rope (4) and the friction pad (12) Whether the creep slippage is within the allowable range under the corresponding angular acceleration, so as to judge whether the friction pad (12) can meet the anti-skid requirements under dynamic conditions;
10. The electrodeless rope type vertical shaft hoisting joint testing method according to claim 7, characterized in that the brake performance test includes two aspects: static braking test and dynamic braking test:

    First, when performing a static braking test, the brake (6) clamps the brake disc (11), shuts down the motor (7), and simulates the tension difference between the steel rope on both sides of the drum (10) under extreme conditions , Adjust the oil pressure of the oil outlet of the hydraulic loading device (1) and the oil pressure of the two-way hydraulic pump (2-aj), start the hydraulic loading device (1) and the two-way hydraulic pump (2-aj), detect the time Whether there is relative sliding between the brake (6) and the brake disc (11), so as to determine whether the brake (6) can effectively brake the spindle device under static conditions;

    Second, when the dynamic brake test is performed, the brake (6) clamps the brake disc (11), shuts down the motor (7), and simulates the tension of the steel rope on both sides of the drum (10) under heavy load conditions Difference, adjust the hydraulic pressure of the oil outlet of the hydraulic loading device (1) and the hydraulic pressure of the bidirectional hydraulic pump (2-aj), start the hydraulic loading device (1) and the bidirectional hydraulic pump (2-aj), start the motor (7), open the brake (6), the motor (7) controls the drum (10) to start with the angular acceleration a ₁ and reach the speed v, turn off the motor (7), start the brake (6), detect the time Whether the idle travel time and brake deceleration of the brake are within the allowable range, so as to determine whether the brake system can effectively brake the spindle device under dynamic conditions.

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