WO2020014851A1 - 一种多螺栓松脱试验机横向载荷无级调幅装置 - Google Patents

一种多螺栓松脱试验机横向载荷无级调幅装置 Download PDF

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Publication number
WO2020014851A1
WO2020014851A1 PCT/CN2018/095874 CN2018095874W WO2020014851A1 WO 2020014851 A1 WO2020014851 A1 WO 2020014851A1 CN 2018095874 W CN2018095874 W CN 2018095874W WO 2020014851 A1 WO2020014851 A1 WO 2020014851A1
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Prior art keywords
bearing
load
square shaft
torque
plate
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PCT/CN2018/095874
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English (en)
French (fr)
Inventor
孙清超
林清源
张豹
穆晓凯
杨斌
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大连理工大学
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Priority to PCT/CN2018/095874 priority Critical patent/WO2020014851A1/zh
Priority to US16/603,728 priority patent/US11073455B2/en
Publication of WO2020014851A1 publication Critical patent/WO2020014851A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/027—Specimen mounting arrangements, e.g. table head adapters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/06—Multidirectional test stands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/08—Shock-testing

Definitions

  • the invention belongs to the technical field of mechanical test equipment and relates to a stepless amplitude modulation device for lateral load of a multi-bolt loosening tester.
  • Bolt loosening is one of the main failure forms of bolted structures.
  • Bolt loosening testers can be used to study the loosening of bolts under different working conditions.
  • the bolt loosening testers currently used can be divided into single bolt loosening testers and multi-bolt loosening testers.
  • the current multi-bolt loosening test machine provides a fixed lateral load, or needs to obtain different loads by changing the size of the part, which is costly and has a long cycle, and the provided load is difficult to accurately control, and it is difficult to accurately simulate the bolt set. Real working conditions.
  • this multi-bolt loosening tester is designed for the lateral load stepless amplitude modulation device, which can provide the flange bolt group with continuous horizontal load that can be steplessly adjusted, and the lateral load value can be accurately controlled through the feedback system, which can more accurately simulate The looseness of the blue plate under working conditions.
  • the multi-bolt loosening test machine there is no related patent on the multi-bolt loosening test machine.
  • the purpose of the present invention is to provide a stepless amplitude modulation device for lateral load for a multi-bolt loosening tester, which can apply stepless amplitude-adjustable continuous lateral load to a multi-bolt connection flange, and ensure the accuracy of the lateral load through a feedback control system. Sex.
  • a transverse load stepless amplitude modulation device for a multi-bolt loosening tester is composed of four parts, which are a transverse load stepless amplitude modulation part, a lateral load transmission part, a torque load transmission part, and an axial load transmission part;
  • the torque load transmitting part includes a torque arm 25, a reducer support frame 26, a guide rail slider 27, a bearing outer sleeve 28, a torque eccentric coupling 29, a reducer 30, and a torque servo motor 31;
  • the reducer support frame 26 is fixed on the bottom plate 40, the torque servo motor 31 is connected to the reducer 30, and the output shaft of the reducer 30 passes through the reducer support frame 26 and is fixed on the reducer support frame 26; the output shaft of the reducer 30 and The torque eccentric coupling 29 is connected together.
  • the torque eccentric coupling 29 is fixed to the upper end surface of the bearing housing 28.
  • the lower end surface of the bearing housing 28 is fixed to the slider of the guide rail slider 27.
  • On the torsion arm 25, one end of the torsion arm 25 provided with an inner hexagon head is sleeved on the outer hexagon of the thick test piece 33 and is located on the tension plate 24;
  • the axial load transmitting part includes a thin test piece 32, a thick test piece 33, a test piece bolt 34, a bearing cover 35, a thrust ball bearing 36, an upper clamping plate 37, an axial load supporting frame 38, and a hydraulic pull horse 39.
  • the thin test piece 32 and the thick test piece 33 are assembled correspondingly at the mouth; the upper end of the thick test piece 33 is assembled with a round hole at the right end of the tension plate 24, and the end of the thick test piece 33 is installed on the upper clamping plate; 37 inner ring; the bearing cover 35 passes through the upper clamping plate 37, and the thrust ball bearing 36 is sandwiched between the bearing cover 35 and the upper clamping plate 37; the hydraulic start of the hydraulic puller 39 One end of the rod is placed in a cylinder on the axial loading support frame 38, and the claw hooks on the rod catch the edge of the bearing cover 35;
  • the transverse load stepless amplitude modulation part includes a second square shaft bushing 8, a square shaft bearing 9, a cross load guide moving plate 10, a cross load guide fixed base plate 11, a screw nut 12, a ball screw 13, and a servo motor unit.
  • the T-slider 16 described above is mounted on the cross-load guide rail moving plate 10 and moves together with the cross-load guide rail moving plate 10; the cross-load guide rail moving plate 10 can realize sliding on the cross-load guide fixed substrate 11
  • the guide rail fixing substrate 11 is mounted on the bottom plate 40; the T-slider 16 is connected to the screw nut 12, and the screw nut 12 is matched with the ball screw 13 and is located below the square shaft bearing 9; the ball screw 13 is connected to the servo motor 15 through the servo motor coupling 14, and the servo motor 15 is fixed on the base plate 40;
  • the transverse load transmitting part includes a spindle motor 1, a spindle motor output shaft flange 2, a square shaft flange 3, a square shaft 4, a first square shaft bushing 5, a crank bearing 6, an eccentric rocker 7, and a rocker connection.
  • rocker connecting block 18 U-shaped link 19, first linear bearing 20, elastic rod 21, force sensor 22, second linear bearing 23, tension plate 24, and bottom plate 40;
  • the spindle motor 1 is fixed On the base plate 40, the output shaft of the spindle motor 1 is connected to the square shaft 4 through the spindle motor output shaft flange 2 and the square shaft flange 3, and the square shaft 4 drives the crank bearing 6 to rotate through the first square shaft bushing 5
  • the crank bearing 6 transmits the movement to the eccentric rocker 7, and the eccentric rocker 7 and the rocker connecting block 18 are connected by a rocker connecting pin 17;
  • the U-shaped link 19 is fixed to the rocker connecting block 18; It is connected to the elastic rod 21 through the first linear bearing 20, the elastic rod 21 is connected to the force sensor 22, and the lateral load is transmitted to the tension plate 24 through the second linear bearing 23.
  • a multi-bolt loosening tester lateral load stepless amplitude modulation device of the present invention provides stepless amplitude-adjustable continuous lateral load for a flange bolt group, and the accuracy of the lateral load can be ensured through a feedback control system Sex.
  • Figure 1 is a positive triaxial view of the test bench.
  • rocker connecting block 19 U-shaped connecting rod; 20 first linear bearing; 21 elastic rod; 22 force sensor;
  • a stepless amplitude-adjustable multi-bolt loosening tester is composed of four parts, which are a transverse load stepless amplitude modulation part, a lateral load transmission part, a torque load transmission part, and an axial load transmission part;
  • the transverse load stepless amplitude modulation part includes a second square shaft bushing 8, a square shaft bearing 9, a cross load guide moving plate 10, a cross load guide fixed base plate 11, a screw nut 12, a ball screw 13, and a servo motor unit.
  • the slider 16 is mounted on the lateral load rail moving plate 10 and moves together with the lateral load rail moving plate 10.
  • the lateral movement of the T-shaped slider 16 causes the eccentricity of the eccentric rocker 7 to change; the lateral load rail moves
  • the plate 10 can be slid on the cross-loading rail fixed base plate 11 and the cross-loading rail fixed base plate is mounted on the bottom plate 40; the T-slider 16 is connected with the screw nut 12 and the screw nut 12 and the ball screw 13
  • the ball screw 13 is connected to the servo motor 15 through a servo motor coupling 14, and the servo motor 15 is fixed on the bottom plate 40.
  • the transverse load transmitting part includes a spindle motor 1, a spindle motor output shaft flange 2, a square shaft flange 3, a square shaft 4, a first square shaft bushing 5, a crank bearing 6, an eccentric rocker 7, and a rocker connection.
  • rocker connecting block 18 U-shaped link 19, first linear bearing 20, elastic rod 21, force sensor 22, second linear bearing 23, tension plate 24, and bottom plate 40;
  • the spindle motor 1 is fixed On the base plate 40, the output shaft of the spindle motor 1 is connected to the output shaft flange 2 of the spindle motor, the output shaft flange 2 of the spindle motor is connected to the square shaft flange 3 by bolts, the square shaft flange is connected to the square shaft 4, and the square shaft 4
  • the crank bearing 6 is driven to rotate by the first square shaft bushing 5.
  • the crank bearing 6 is connected to the eccentric rocker 7 through an interference fit, and transmits the motion to the eccentric rocker 7, the eccentric rocker 7 and the rocker.
  • the connecting block 18 is connected by a rocker connecting pin 17.
  • the U-shaped connecting rod 19 is connected to the elastic rod 21 through the first linear bearing 20, and the elastic rod 21 is connected to the force sensor 22. The lateral load is transmitted to the tension plate 24.
  • the torque load transmitting part includes a torque arm 25, a reducer support frame 26, a guide rail slider 27, a bearing outer sleeve 28, a torque eccentric coupling 29, a reducer 30, and a torque servo motor 31;
  • the reducer support frame 26 is fixed on the bottom plate 40, the torque servo motor 31 and the external reducer 30 are fixed on the reducer support frame 26;
  • the output shaft of the reducer 30 is connected with the torque eccentric coupling 29, and the torque eccentric coupling is
  • the device 29 is fixed to the upper end surface of the bearing housing 28, and the lower end surface of the bearing housing 28 is fixed to the slider of the guide rail slider 27.
  • the guide rail of the guide rail slider 27 is fixed to the torque arm 25, and the torque arm 25 is provided with a hexagonal head. One end is sleeved on the outer hexagon of the thick test piece 33 and is located on the tension plate 24.
  • the axial load transmitting part includes a thin test piece 32, a thick test piece 33, a test piece bolt 34, a bearing cover 35, a thrust ball bearing 36, an upper clamping plate 37, an axial load supporting frame 38, and a hydraulic pull horse 39.
  • the thin test piece 32 and the thick test piece 33 are respectively assembled together at the mouth; the upper end of the thick test piece 33 is assembled with the tension plate 24 through a clearance fit, and the end of the thick test piece 33 is installed on the upper clamping plate; 37 inner ring; the bearing cover 35 passes through the upper clamping plate 37, and the thrust ball bearing 36 is sandwiched between the bearing cover 35 and the upper clamping plate 37; the hydraulic start of the hydraulic puller 39 One end of the rod is placed in a cylinder on the axial loading support frame 38, and the claw hooks on the rod catch the edge of the bearing cover 35.
  • a multi-bolt loosening tester capable of stepless amplitude modulation has the following steps:
  • the hydraulic puller 39 is pressurized, and the hydraulic start lever of the hydraulic puller 39 is extended, which drives the claw hook of the hydraulic puller 39 to move upward, and the claw hook tightens the edge of the bearing cover 35, thereby generating an axial pulling force. .
  • the force sensor 22 monitors the lateral load in real time, process the monitoring signal through the control system, and control the servo motor 15 based on the processing result.
  • the servo motor 15 drives the T-slider through the ball screw 13 16 to move, thereby changing the eccentricity of the eccentric rocker 7, so as to achieve stepless amplitude modulation and precise control of the lateral load.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

一种多螺栓松脱试验机横向载荷无级调幅装置，由四个部分组成，分别为横向载荷无级调幅部分、横向载荷传递部分、扭矩载荷传递部分和轴向载荷传递部分。该装置为法兰盘螺栓组提供可无级调幅的连续横向载荷，并且可以通过反馈控制系统保证横向载荷的准确性。

Description

一种多螺栓松脱试验机横向载荷无级调幅装置 技术领域
本发明属于机械试验设备技术领域，涉及一种多螺栓松脱试验机横向载荷无级调幅装置。
 背景技术
螺栓松脱是螺栓连接结构的主要失效形式之一，螺栓松脱试验机可以用来研究螺栓在不同工况下的松脱情况。现在使用的螺栓松脱试验机可以分为单螺栓松脱试验机与多螺栓松脱试验机。单螺栓松脱试验机主要有Junker松脱试验机、NAS松脱试验机与电-液伺服振动试验机三种，以上三种单螺栓松脱试验机均无法对螺栓组的松脱状况进行测试，而且可以施加的载荷较为单一，难以模拟真实工况。而目前的多螺栓松脱试验机，提供的横向载荷为固定载荷，或者需要通过改变零件尺寸来获得不同载荷，代价大，周期长，而且提供的载荷难以精确控制，很难准确模拟螺栓组的真实工况。
因此设计出此多螺栓松脱试验机横向载荷无级调幅装置，可以为法兰盘螺栓组提供可无级调幅的连续横向载荷，并且可以通过反馈系统精确控制横向载荷数值，更加准确地模拟法兰盘在工作状况下的松脱情况。目前在多螺栓松脱试验机方面尚无相关专利。
 技术问题
本发明的目的是针对多螺栓松脱试验机提供一种横向载荷无级调幅装置，能够对多螺栓连接法兰盘施加可无级调幅的连续横向载荷，并且通过反馈控制系统保证横向载荷的准确性。
 技术解决方案
本发明的技术方案：
一种多螺栓松脱试验机横向载荷无级调幅装置，由四个部分组成，分别为横向载荷无级调幅部分、横向载荷传递部分、扭矩载荷传递部分和轴向载荷传递部分；
所述的扭矩载荷传递部分包括扭力臂25、减速器支撑架26、导轨滑块27、轴承外套28、扭矩偏心联轴器29、减速器30和扭矩伺服电机31；所述的减速器支撑架26固定在底板40上，扭矩伺服电机31外接减速器30，减速器30的输出轴穿过减速器支撑架26，并固定在减速器支撑架26上；所述的减速器30的输出轴与扭矩偏心联轴器29连接在一起，扭矩偏心联轴器29与轴承外套28上端面固定在一起，轴承外套28下端面固定在导轨滑块27的滑块上，导轨滑块27所在的导轨固定在扭力臂25上，扭力臂25上设有内六角头的一端套在厚试件33的外六角上，位于拉力板24之上；
所述的轴向载荷传递部分包括薄试件32、厚试件33、试件螺栓34、轴承盖35、推力球轴承36、上夹持板37、轴向加载支撑架38和液压拉马39；所述的薄试件32和厚试件33止口对应装配在一起；所述的厚试件33上端与拉力板24右端圆孔装配在一起，厚试件33末端安装在上夹持板37内圈中；所述的轴承盖35穿过上夹持板37，并将推力球轴承36夹在轴承盖35与上夹持板37之间；所述的液压拉马39的油压起动杆一端置于轴向加载支撑架38上的圆筒内，其上的爪勾勾住轴承盖35边缘；
所述的横向载荷无级调幅部分包括第二方轴衬套8、方轴轴承9、横载导轨移动板10、横载导轨固定基板11、丝杠螺母12、滚珠丝杠13、伺服电机联轴器14、伺服电机15以及T型滑块16；所述的第二方轴衬套8与方轴轴承9相连接，方轴轴承9通过过盈配合安装在T型滑块16中；所述的T型滑块16安装在横载导轨移动板10上，随横载导轨移动板10一同运动；所述的横载导轨移动板10可在横载导轨固定基板11上实现滑动，横载导轨固定基板11安装在底板40上；所述的T型滑块16与丝杠螺母12相连接，丝杠螺母12与滚珠丝杠13配合，位于方轴轴承9下方；所述的滚珠丝杠13通过伺服电机联轴器14与伺服电机15相连，伺服电机15固定在底板40上；
所述的横向载荷传递部分包括主轴电机1、主轴电机输出轴法兰2、方轴法兰3、方轴4、第一方轴衬套5、曲柄轴承6、偏心摇杆7、摇杆连接销17、摇杆连接块18、U型连杆19、第一直线轴承20、弹性杆21、力传感器22、第二直线轴承23、拉力板24以及底板40；所述的主轴电机1固定在底板40上，主轴电机1的输出轴通过主轴电机输出轴法兰2和方轴法兰3实现与方轴4的连接，方轴4通过第一方轴衬套5带动曲柄轴承6产生转动；所述的曲柄轴承6将运动传递给偏心摇杆7，偏心摇杆7与摇杆连接块18通过摇杆连接销17进行连接；所述的U型连杆19固定在摇杆连接块18上，并穿过第一直线轴承20与弹性杆21相连，弹性杆21与力传感器22相连，通过第二直线轴承23将横向载荷传递到拉力板24。
 有益效果
本发明的有益效果：本发明的一种多螺栓松脱试验机横向载荷无级调幅装置为法兰盘螺栓组提供可无级调幅的连续横向载荷，并且可以通过反馈控制系统保证横向载荷的准确性。
 附图说明
图1为试验台的正三轴测图。
图中：1主轴电机；2主轴电机输出轴法兰；3方轴法兰；4方轴；
5第一方轴衬套；6曲柄轴承；7偏心摇杆；8第二方轴衬套；9方轴轴承；
10横载导轨移动板；11横载导轨固定基板；12丝杠螺母；13滚珠丝杠；
14伺服电机联轴器；15伺服电机；16 T型滑块；17摇杆连接销；
18摇杆连接块；19 U型连杆；20第一直线轴承；21弹性杆；22力传感器；
23第二直线轴承；24拉力板；25扭力臂；26减速器支撑架；27导轨滑块；
28轴承外套；29扭矩偏心联轴器；30减速器；31扭矩伺服电机；
32薄试件；33厚试件；34试件螺栓；35轴承盖；36推力球轴承；
37上夹持板；38轴向加载支撑架；39液压拉马；40底板。
 本发明的实施方式
以下结合附图和技术方案，进一步说明本发明的具体实施方式。
如图1所示：
一种可无级调幅的多螺栓松脱试验机，由四个部分组成，分别为横向载荷无级调幅部分、横向载荷传递部分、扭矩载荷传递部分和轴向载荷传递部分；
所述的横向载荷无级调幅部分包括第二方轴衬套8、方轴轴承9、横载导轨移动板10、横载导轨固定基板11、丝杠螺母12、滚珠丝杠13、伺服电机联轴器14、伺服电机15以及T型滑块16；所述的第二方轴衬套8与方轴轴承9相连接，方轴轴承9通过过盈配合安装在T型滑块16中，T型滑块16安装在横载导轨移动板10上，随横载导轨移动板10一同运动，T型滑块16的横向移动导致偏心摇杆7的偏心距发生改变；所述的横载导轨移动板10可以在横载导轨固定基板11上实现滑动，横载导轨固定基板安装在底板40上；所述的T型滑块16与丝杠螺母12相连接，丝杠螺母12与滚珠丝杠13配合；所述的滚珠丝杠13通过伺服电机联轴器14与伺服电机15相连，伺服电机15固定在底板40上。
所述的横向载荷传递部分包括主轴电机1、主轴电机输出轴法兰2、方轴法兰3、方轴4、第一方轴衬套5、曲柄轴承6、偏心摇杆7、摇杆连接销17、摇杆连接块18、U型连杆19、第一直线轴承20、弹性杆21、力传感器22、第二直线轴承23、拉力板24以及底板40；所述的主轴电机1固定在底板40上，主轴电机1的输出轴与主轴电机输出轴法兰2相连，主轴电机输出轴法兰2通过螺栓与方轴法兰3相连，方轴法兰与方轴4相连，方轴4通过第一方轴衬套5带动曲柄轴承6产生转动，所述的曲柄轴承6通过过盈配合与偏心摇杆7进行连接，将运动传递给偏心摇杆7，偏心摇杆7与摇杆连接块18通过摇杆连接销17进行连接，所述的U型连杆19穿过第一直线轴承20与弹性杆21相连，弹性杆21与力传感器22相连，通过第二直线轴承23将横向载荷传递到拉力板24。
所述的扭矩载荷传递部分包括扭力臂25、减速器支撑架26、导轨滑块27、轴承外套28、扭矩偏心联轴器29、减速器30和扭矩伺服电机31；所述的减速器支撑架26固定在底板40上，扭矩伺服电机31与外接减速器30共同固定在减速器支撑架26上；所述的减速器30的输出轴与扭矩偏心联轴器29连接在一起，扭矩偏心联轴器29与轴承外套28上端面固定在一起，轴承外套28下端面固定在导轨滑块27的滑块上，导轨滑块27的导轨固定在扭力臂25上，扭力臂25上设有内六角头的一端套在厚试件33的外六角上，位于拉力板24之上。
所述的轴向载荷传递部分包括薄试件32、厚试件33、试件螺栓34、轴承盖35、推力球轴承36、上夹持板37、轴向加载支撑架38和液压拉马39；所述的薄试件32和厚试件33止口对应装配在一起；所述的厚试件33上端通过间隙配合与拉力板24装配在一起，厚试件33末端安装在上夹持板37内圈中；所述的轴承盖35穿过上夹持板37，并将推力球轴承36夹在轴承盖35与上夹持板37之间；所述的液压拉马39的油压起动杆一端置于轴向加载支撑架38上的圆筒内，其上的爪勾勾住轴承盖35边缘。
一种可无级调幅的多螺栓松脱试验机，步骤如下：
（1）对液压拉马39加压，液压拉马39的油压起动杆伸出，带动液压拉马39的爪勾向上移动，爪勾勾紧轴承盖35边缘，从而产生一个轴向的拉力。
（2）启动主轴电机1，由主轴电机1带动方轴4产生转动，由于偏心摇杆7偏心距的存在，电机转动可以输出周期性横向载荷，由于弹性杆21的存在，不会发生电机抱死的情况。
（3）启动伺服电机15，力传感器22对横向载荷进行实时监测，通过控制系统对监测信号进行处理，基于处理结果对伺服电机15进行控制，伺服电机15通过滚珠丝杠13带动T型滑块16进行移动，进而改变偏心摇杆7的偏心距，从而对横向载荷实现无级调幅以及精确控制。
（4）启动扭矩伺服电机31，由于扭矩偏心联轴器29偏心距的存在，会使扭力臂25摆动，从而产生扭矩载荷。

Claims (1)

  1. 一种多螺栓松脱试验机横向载荷无级调幅装置，所述的多螺栓松脱试验机横向载荷无级调幅装置由四个部分组成，分别为横向载荷无级调幅部分、横向载荷传递部分、扭矩载荷传递部分和轴向载荷传递部分；
    所述的扭矩载荷传递部分包括扭力臂（25）、减速器支撑架（26）、导轨滑块（27）、轴承外套（28）、扭矩偏心联轴器（29）、减速器（30）和扭矩伺服电机（31）；所述的减速器支撑架（26）固定在底板（40）上，扭矩伺服电机（31）外接减速器（30），减速器（30）的输出轴穿过减速器支撑架（26），并固定在减速器支撑架（26）上；所述的减速器（30）的输出轴与扭矩偏心联轴器（29）连接在一起，扭矩偏心联轴器（29）与轴承外套（28）上端面固定在一起，轴承外套（28）下端面固定在导轨滑块（27）的滑块上，导轨滑块（27）所在的导轨固定在扭力臂（25）上，扭力臂（25）上设有内六角头的一端套在厚试件（33）的外六角上，位于拉力板（24）之上；
    所述的轴向载荷传递部分包括薄试件（32）、厚试件（33）、试件螺栓（34）、轴承盖（35）、推力球轴承（36）、上夹持板（37）、轴向加载支撑架（38）和液压拉马（39）；所述的薄试件（32）和厚试件（33）止口对应装配在一起；所述的厚试件（33）上端与拉力板（24）右端圆孔装配在一起，厚试件（33）末端安装在上夹持板（37）内圈中；所述的轴承盖（35）穿过上夹持板（37），并将推力球轴承（36）夹在轴承盖（35）与上夹持板（37）之间；所述的液压拉马（39）的油压起动杆一端置于轴向加载支撑架（38）上的圆筒内，其上的爪勾勾住轴承盖（35）边缘；
    其特征在于，所述的横向载荷无级调幅部分包括第二方轴衬套（8）、方轴轴承（9）、横载导轨移动板（10）、横载导轨固定基板（11）、丝杠螺母（12）、滚珠丝杠（13）、伺服电机联轴器（14）、伺服电机（15）以及T型滑块（16）；所述的第二方轴衬套（8）与方轴轴承（9）相连接，方轴轴承（9）通过过盈配合安装在T型滑块（16）中；所述的T型滑块（16）安装在横载导轨移动板（10）上，随横载导轨移动板（10）一同运动；所述的横载导轨移动板（10）可在横载导轨固定基板（11）上实现滑动，横载导轨固定基板（11）安装在底板（40）上；所述的T型滑块（16）与丝杠螺母（12）相连接，丝杠螺母（12）与滚珠丝杠（13）配合，位于方轴轴承（9）下方；所述的滚珠丝杠（13）通过伺服电机联轴器（14）与伺服电机（15）相连，伺服电机（15）固定在底板（40）上；
    所述的横向载荷传递部分包括主轴电机（1）、主轴电机输出轴法兰（2）、方轴法兰（3）、方轴（4）、第一方轴衬套（5）、曲柄轴承（6）、偏心摇杆（7）、摇杆连接销（17）、摇杆连接块（18）、U型连杆（19）、第一直线轴承（20）、弹性杆（21）、力传感器（22）、第二直线轴承（23）、拉力板（24）以及底板（40）；所述的主轴电机（1）固定在底板（40）上，主轴电机（1）的输出轴通过主轴电机输出轴法兰（2）和方轴法兰（3）实现与方轴（4）的连接，方轴（4）通过第一方轴衬套（5）带动曲柄轴承（6）产生转动；所述的曲柄轴承（6）将运动传递给偏心摇杆（7），偏心摇杆（7）与摇杆连接块（18）通过摇杆连接销（17）进行连接；所述的U型连杆（19）固定在摇杆连接块（18）上，并穿过第一直线轴承（20）与弹性杆（21）相连，弹性杆（21）与力传感器（22）相连，通过第二直线轴承（23）将横向载荷传递到拉力板（24）。
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