JP5496421B2 - Apparatus and test method for static characteristics of full load of bolt joint surface unit - Google Patents

Description

  TECHNICAL FIELD The present invention belongs to the technical field of static characteristics test for full load of member joint surface units, and particularly relates to a static characteristic test apparatus for full load of bolt joint surface units and a static characteristic test method for full load of bolt joint surface units.

  One machine is composed of a number of members, and the surface where the members are joined together is called a joint surface. The characteristics of the joint surface greatly affect the characteristics of the entire machine. The rigidity of the joint surface of machines such as work machines, coordinate measuring machines, and robots accounts for 50% or more of the overall rigidity. It accounts for 80%. The joint surface of the members connected by the bolts is referred to as a bolt joint surface, and the characteristics of the bolt joint surfaces are the joint surfaces of the two members, the screw joint surface of the bolt and one of the members, the bolt, and the inner part thereof. It is determined from the characteristics of the joint surface of three parts such as the joint surface with one member. Since the characteristics of the joint surface have non-linear characteristics, the test apparatus and test method for acquiring the characteristics of the bolt joint surface have a great influence on the accuracy of the acquired characteristics of the bolt joint surface.

  In an actual structure, the connecting surface between the two members may be large, and there may be a plurality of connecting bolts. Among them, the joint surface joined by one bolt is referred to as a bolt joint surface unit, and the overall characteristics of the bolt joint surface are determined by the characteristics of each bolt joint surface unit and its distribution. When the characteristics of the bolt joint surface unit are obtained accurately, the characteristics of the entire bolt joint surface can be obtained through analysis. Since the bolt joint surface unit is a part of the entire bolt joint surface, not only the normal prestressing force is applied to the bolt joint surface unit, but also the working load (normal force, tangential force, Total working load such as torque and bending moment) may also be applied. However, the current bolt joint surface static characteristic test apparatus is limited only to the normal direction prestress characteristic test.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a static characteristic test apparatus for a bolt joint surface unit that can perform a normal force test, a tangential force, a cork and a bending moment, and a full load static characteristic test of a bolt joint surface unit. That is.

  Another object of the present invention is to provide a method for testing the static characteristics of the bolt joint surface unit at the full load, and to realize a normal force test of the bolt joint surface, a tangential force, a cork and a bending moment, and a full use load static characteristic test. That is.

  The technical solution of the present invention employs a static characteristic test device for the full load of the bolt joint surface unit, which includes a case, a horizontal beam is installed above the case, and the horizontal beam is fixed to the case through the left column and the right column. The lower test member is disposed on the work table of the case, the upper test member is disposed on the lower test member, and the upper test member and the lower test member are disposed between the upper test member and the cross beam. Preload components that are sequentially coupled are installed, and one load application component is symmetrically attached to the cantilever beams at both ends of the upper test member, which are referred to as a first load application component and a second load application component, respectively. The upper part of the first load application part and the second load application part are connected to the horizontal beam, and one connection member is attached to the end of the cantilever at both ends of the upper test member. In the connecting member and cross beam Between the left strut) is axis is horizontal load applied parts respectively installed is referred to as a third load application part and the fourth load application part).

  Another technical solution of the present invention performs the following measurement test using the apparatus.

  Method 1: The method for testing the static characteristics of the full load of the bolt joint surface unit uses an apparatus having the following structure.

A horizontal beam is installed above the case. The horizontal beam is fixedly connected to the case through the left and right columns, and the lower test member is placed on the work table of the case. A test member is arranged, and between the upper test member and the cross beam, a preload component that is connected in sequence with the upper test member and the lower test member is installed. The structure of the preload component is a simulated bolt head, force Including sensor, spacer, bearing, dedicated screw and centering accessory, centering accessory consists of two stepped semicircular rings, dedicated screw, bearing, spacer, force sensor, simulated bolt head and upper test member, lower test The members are arranged concentrically, the upper end of the dedicated screw has a square structure, and a horizontal force application hole is opened through the shaft center. Spacers, a force sensor, simulated bolt head, through the axial hole of the upper test member, the lower end and the lower test member dedicated screw is screwed,
The step of performing the prestress force test in the vertical direction using the above-described apparatus is as follows.
The lower test member is fixed to the case, the upper test member is placed on the upper surface of the lower test member (2), and several vertical displacement sensors are installed on each measurement plane of the lower test member and the upper test member for centering. Using the concentric arrangement function of the accessory, the lower end of the dedicated screw is sequentially passed through the bearing, spacer, force sensor, and simulated bolt head hole, and then the lower end of the dedicated screw is screwed to the lower test member for centering. Remove the accessory, rotate the square at the upper end of the dedicated screw, pressurize the upper test member and the lower test member with the dedicated screw, and thereby apply the prestressing force in the normal direction. Prestress force is detected, and each displacement sensor in the vertical direction simultaneously detects the relative displacement in the normal direction of the upper test member and the lower test member, and the relative displacement in the normal direction is determined by the bolt joint surface. Pre-deformation of the knit, the pre-stress force of the bolt joint surface unit and the pre-deformation relationship can be obtained by changing the pre-stress force by adjusting the dedicated screw of the pre-load component and repeating the above steps. .

  Method 2: The test method for the static characteristics of the full load of the bolt joint surface unit uses an apparatus having the following structure.

A horizontal beam is installed above the case. The horizontal beam is fixedly connected to the case through the left and right columns, and the lower test member is placed on the work table of the case. A test member is placed, and preload parts are installed in order between the upper test member and the lower test member between the upper test member and the horizontal beam. One load is applied to each of the cantilever beams at both ends of the upper test member. The application parts are mounted symmetrically, which are referred to as the first load application part and the second load application part, respectively, and the first load application part and the second load application part are respectively coupled with the cross beam vertically above, The structure includes simulated bolt heads, force sensors, spacers, bearings, dedicated screws and centering accessories, and the centering accessories consist of two stepped semicircular rings, dedicated screws, bearings and spacers. -The force sensor, the simulated bolt head, the upper test member, and the lower test member are mounted concentrically, the upper end of the dedicated screw has a square structure, and a force application hole that is horizontal through the shaft center is opened. From the shaft to the bottom, the bearing, the spacer, the force sensor, the simulated bolt head, and the shaft hole of the upper test member are passed through, the lower end of the dedicated screw and the lower test member are screwed together, and the first load application component and the second The structure of the load application parts is similar and vertically mounted, and all include a force sensor part, a front load application nut, a rear load application nut and a flange, one end of each force sensor part being a piece at each end of the upper test member. The other end of each force sensor component is fixedly connected to the cantilever and through its screw, pre-loading nut and post-loading nut, the corresponding frame attached to the transverse beam. Is coupled to Nji,
Performing the normal direction use load test using the device,
The lower test member is fixed to the case, the upper test member is placed on the lower test member, and several vertical displacement sensors are installed on each measurement plane of the lower test member and the upper test member. The first load application part and the second load application part are attached to the cantilever, and the lower end of the dedicated screw is sequentially supported by using the concentric arrangement function of the accessory with centering, the spacer, the force sensor, the hole of the simulated bolt head Then, the lower end of the dedicated screw is screwed to the lower test member, the accessory with centering is removed, the upper end of the dedicated screw is rotated, and the upper and lower test members are pressurized with the dedicated screw. Thus, a prestressing force in the normal direction is applied, and one end of each of the first load application component and the second load application component is fixedly coupled to the cantilever of the upper test member, and the first load mark The other end of the part and the second load application part are coupled to the flange on the cross beam and can be mounted vertically by adjusting the first load application part, the preload application nut and the postload application nut of the second load application part. The first load application component and the second load application component are applied with the same normal load, and if necessary, a pulling or pushing load is applied, and the first load application component and the second load application component The applied load in the normal direction is detected by the force sensor of each of the first load application component and the second load application component, and is used in the normal direction of the upper test member and the lower test member by the vertical displacement sensor. The relative displacement generated by the load is detected, that is, the relative displacement in the normal direction is a deformation in the normal direction generated by the use load in the normal direction of the bolt joint surface unit, and the first load application component and the second load are detected. By changing the normal direction load applied by the applied component and repeating the above steps, the normal direction deformation generated by the normal direction load and normal direction load of the bolt joint unit And can get a relationship.

  Method 3: The test method for static characteristics of the full load of the bolt joint surface unit uses an apparatus having the following structure.

A horizontal beam is installed above the case. The horizontal beam is fixedly connected to the case through the left and right columns, and the lower test member is placed on the work table of the case. A test member is arranged, and a preload component is installed in order between the upper test member and the lower test member between the upper test member and the horizontal beam. Using a device in which one coupling member is attached and a third load application component having a horizontal axis between the coupling member and the right column of the cross beam is installed, the structure of the preload component is a simulated bolt head, a force sensor, Including spacer, bearing, dedicated screw and centering accessory, centering accessory consists of two stepped semicircular rings, dedicated screw, bearing, spacer, force sensor, simulated bolt head and upper test part , Lower test members are concentrically arranged, the upper end of the dedicated screw has a square structure, and a horizontal force application hole is drilled through the shaft center, and the dedicated screw is a bearing, spacer, force sensor, and simulation in order from top to bottom Bolt head, passing through the axial hole of the upper test member, the lower end of the dedicated screw and the lower test member are screwed together, the third load application component is mounted horizontally, and the force sensor component, the preload application nut, One end of the force sensor component is fixedly connected to one end of the upper test member through the coupling member, and the other end of the force sensor component is connected to the screw, the preload application nut and the postload application nut. Coupled to the corresponding flange attached to the right column,
The step of performing a tangential use load test using the device is as follows:
The lower test member is fixed to the case, the upper test member is placed above the lower test member, several horizontal displacement sensors are installed on each measurement plane of the lower test member and the upper test member, and the concentric arrangement of centering accessories Using the function, after passing the lower end of the dedicated screw sequentially through the bearing, spacer, force sensor, and the hole of the simulated bolt head, the lower end of the dedicated screw is screwed to the lower test member, and the accessory with centering is removed, The upper test member and the lower test member are pressurized with the dedicated screw by rotating the square at the upper end of the dedicated screw, thereby applying a prestressing force in the normal direction, and one coupling member on one side of the upper test member And the third load application component are mounted horizontally, and the axis S of the third load application component passes through the coupling surface of the upper test member and the lower test member, and the axis L of the dedicated screw of the preload component. One end of the force sensor component of the third load application component that intersects at right angles and is horizontally mounted is fixedly coupled to the right side of the coupling member, and the other end of the force sensor component is its screw, preload application nut, and rear It is connected to the flange through the load application nut, the flange is fixedly attached to the right column, and the working load in the tangential direction is applied by adjusting the preload application nut and the postload application nut of the third load application component, The working load in the tangential direction is positive or negative as required. The tangential working load applied by the third load application component is detected by the force sensor of the third load application component, and the upper test is performed by the horizontal displacement sensor. The relative displacement in the tangential direction generated by the tangential load applied between the member and the lower test member is detected, that is, the relative displacement in the tangential direction is the tangential direction of the bolt joint surface unit. The tangential deformation caused by the working load, changing the tangential working load applied by the third load application component, and repeating the above steps to use the tangential working load and tangential direction of the bolt joint surface unit It is possible to obtain the relationship with the tangential deformation caused by the use load.

  Method 4: The static characteristic test method for the total load of the bolt joint surface unit uses an apparatus having the following structure.

A horizontal beam is installed above the case. The horizontal beam is fixedly connected to the case through the left and right columns, and the lower test member is placed on the work table of the case. A test member is placed, preload parts are installed in order between the upper test member and the lower test member between the upper test member and the horizontal beam, and one load is applied to the cantilever beams at both ends of the upper test member. The parts are mounted symmetrically, which are referred to as a first load application part and a second load application part, respectively, and the first load application part and the second load application part are respectively connected vertically to the cross beam, and the structure of the preload part Includes a simulated bolt head, force sensor, spacer, bearing, dedicated screw and centering accessory, and the centering accessory is composed of two stepped semicircular rings, dedicated screw, bearing and spacer The force sensor, the simulated bolt head, the upper test member, and the lower test member are concentrically arranged, the upper end of the dedicated screw has a square structure, and a force application hole that is horizontal through the shaft center is opened, and the dedicated screw is lowered from above Through the bearing, spacer, force sensor, simulated bolt head, and shaft hole of the upper test member, the lower end of the dedicated screw and the lower test member are screwed together, the first load application component and the second load application component The structure of each of the force sensor parts is vertically mounted and includes a force sensor part, a front load application nut, a rear load application nut, and a flange. One end of each force sensor part is a cantilever at both ends of the upper test member. The other end of each force sensor component through its screw, preloading nut and postloading nut to the corresponding flange attached to the cross beam. Each is connected,
The step of performing a bending moment use load test using the device is as follows:
The lower test member is fixed to the case, the upper test member is placed above the lower test member, and several displacement sensors are installed on each measurement plane of the lower test member and the upper test member. Using the bearing, the lower end of the dedicated screw is passed through the holes of the bearing, spacer, force sensor and simulated bolt head in sequence, then the lower end of the dedicated screw is screwed to the lower test member, the centering accessory is removed, and the dedicated screw The first load application component attached to the left and right sides of the first load application component is applied to the upper and lower test members by pressing the upper test member and the lower test member with a dedicated screw and applying a prestressing force in the normal direction. Adjust the front load application nut and the rear load application nut of the two load application parts, and the same size and resistance will be obtained by using the first load application part and the second load application part that are mounted vertically on the left and right sides. By applying the load in the normal direction of the direction, the load in the bending moment is applied, and the load in the normal direction is applied by the force sensors of the first load application component and the second load application component mounted vertically. The bending moment is calculated based on the detected load in the normal direction of two opposite directions, the vertical displacement sensor detects the vertical relative displacement of the upper test member and the lower test member, and the upper test member The inclination angle deformation generated by the bending moment of the bolt joint surface unit is obtained from the vertical relative displacement of the lower test member, and the preload application of the first load application component and the second load application component mounted vertically By adjusting the nut and post-load application nut, changing the bending moment working load, and repeating the above steps, the tilt angle deformation of the bolt joint surface unit can be changed to the bending moment. It is possible to obtain the relationship varies with the use load change.

  Method 5: The static characteristic test method for the total load of the bolt joint surface unit uses an apparatus having the following structure.

A horizontal beam is installed above the case. The horizontal beam is fixedly connected to the case through the left and right columns, and the lower test member is placed on the work table of the case. A test member is arranged, and a preload component is installed between the upper test member and the cross beam in order, and a preload component is sequentially connected to the upper test member and the lower test member. Two connecting members are attached, and between the connecting member and the right column of the cross beam, between the connecting member and the left column of the cross beam, a load applying component whose axis is horizontal is installed, respectively. It is called a load application part, and the structure of the preload part includes a simulated bolt head, a force sensor, a spacer, a bearing, a dedicated screw and a centering accessory. The centering accessory consists of two stepped semicircular rings. Dedicated screw, bearing, spacer, force sensor, simulated bolt head and upper test member, lower test member are arranged concentrically, the upper end of the dedicated screw has a square structure, and a force application hole that is horizontal through the shaft center is opened, The dedicated screw passes through the bearing, spacer, force sensor, simulated bolt head, and shaft hole of the upper test member in order from the top to the bottom, and the lower end of the dedicated screw and the lower test member are screwed together. The structure of the fourth load application component is the same and horizontally mounted, and all include a force sensor component, a front load application nut, a rear load application nut, and a flange. It is fixedly connected to both ends of the test member, and the other end of each force sensor component is passed through its screw, preload application nut and postload application nut. Coupled to a corresponding flange attached to the respective left post and a right post,
The step of performing a torque use load test using the device comprises:
The lower test member is fixed to the case, the upper test member is placed above the lower test member, and several displacement sensors are installed on each measurement plane of the lower test member and the upper test member. Using the bearing, the lower end of the dedicated screw is passed through the holes of the bearing, spacer, force sensor and simulated bolt head in sequence, then the lower end of the dedicated screw is screwed to the lower test member, the centering accessory is removed, and the dedicated screw The upper test member and the lower test member are pressurized with a dedicated screw, and the prestressing force in the normal direction is applied by this, and one horizontal is formed on the left and right sides of the upper test member. A third load application component and a fourth load application component are attached, and the horizontal axis S of the third load application component and the fourth load application component passes through the coupling surface of the upper test member and the lower test member and is preloaded. The distance from the axis S of the third load application component and the fourth load application component which are vertical without intersecting the dedicated screw axis L of the product and horizontal on the left and right sides to the axis L of the dedicated screw is the same, The position and direction are opposite, one is in front of the screw axis L, the other is behind the screw axis L, and one end of the force sensor component of the third load application component is tested through the coupling member. The other end of the force sensor component of the fourth load application component is fixedly coupled to the right side of the member, and the other end is coupled to the flange fixedly attached to the right column through the screw, the front load application nut and the rear load application nut. One end is fixedly connected to the left side of the upper test member through the other connecting member, and the other end is connected to the flange on the left column through the screw, the front load applying nut and the rear load applying nut, Adjust the preload application nut and postload application nut of the third load application component and the fourth load application component to apply a working load of the same size and opposite tangential direction, The tangential usage load is detected by the force sensor of the 3 load application component and the 4th load application component, the usage load of the torque is calculated based on the tangential usage load of two opposite directions, and the horizontal displacement sensor is used. While detecting the relative displacement in the horizontal direction of the upper test member and the lower test member, and obtaining the rotation angle deformation generated from the use load of the torque of the bolt joint surface unit from the horizontal relative displacement of the upper test member and the lower test member By adjusting the preload application nut and postload application nut of the third load application component and the fourth load application component, changing the working load of the torque, and repeating the above steps, the bolt joint surface unit It is possible to acquire a relationship in which the rotational angle deformation of the knit changes with a change in torque usage load.

  Advantages of the present invention include a relationship test between a prestress force and a pre-deformation of a bolt joint surface unit, a relationship test that changes depending on a change in the normal direction use load of the normal direction deformation, and a change in a tangential direction use load change of the tangential direction deformation. We can complete the relationship test, the relationship test that changes due to the change in the bending moment use load of the tilt angle deformation, and the relationship test that changes according to the change in the torque use load of the rotation angle deformation, and the prestress force and the total use load of the bolt joint surface unit It is to realize the whole surface static characteristic test.

It is a figure which shows the structure of a bolt joint surface unit. It is a figure which shows the structure of the total use load test apparatus of the bolt joint surface unit of this invention. It is a figure which shows the mounting state for the prestress power test in the method of this invention. It is a figure which shows the mounting state for the use load and bending moment test of the normal direction in the method of this invention. It is a figure which shows the mounting state for the use load test of the tangential direction in the method of this invention. It is a figure which shows the mounting state for the torque test in the method of this invention. It is a figure which shows the coupling | bonding of the load application component and cross beam in the apparatus of this invention. It is a figure which shows the coupling | bonding of the coupling member in the apparatus of this invention, a load application component, and the right support | pillar. It is a figure which shows distribution of each displacement sensor in the apparatus of this invention. It is a figure which shows the intersection in the case of performing a torque static characteristic test by the method of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings and specific embodiments.

  As shown in FIG. 1, the characteristics of the bolt joint surface unit are as follows. The joint surface 13 (joint surface A) between the two members 11 and 12, and the screw joint surface 14 (joint surface B) between the bolt and the one member 12. And the characteristics of the three joint surfaces of the joint surface 15 (joint surface C) between the bolt and the other member 11.

  As shown in FIG. 2, the structure of the test apparatus of the present invention is as follows. The test apparatus includes a case 1, and a horizontal beam 7 is installed above the case 1, and the horizontal beam 7 is fixedly coupled to the case 1 through a left column 4A and a right column 4B. The lower test member 2 is disposed on the work table of the case 1, the upper test member 3 is disposed on the lower test member 2, and the upper test member 3 and the lower test are disposed between the upper test member 3 and the cross beam 7. A preload component 6 for applying a prestressing force in the normal direction by connecting the members 2 is installed. A load application component 5A and a load application component 5B are symmetrically attached to the cantilever beams at both ends of the upper test member 3, and the upper portions of the load application component 5A and the load application component 5B are coupled to the lateral beam 7, respectively. Apply a working load or bending moment in the linear direction. One coupling member 8 is attached to each end of the cantilever at both ends of the upper test member 3, and the tangential direction is provided between the coupling member 8 and the columns (right column 4B, left column 4A) of the cross beam 7. A horizontal load applying component 5C and a load applying component 5D for applying a working load or a bending moment are installed.

  As shown in FIG. 3, the structure of the preload component 6 is a simulated bolt head 6-1, force sensor 6-2, spacer 6-3, bearing 6-4, dedicated screw 6-5 and centering accessory 6-. 6 is included. Centering accessory 6-6 is composed of two stepped semicircular rings, including dedicated screw 6-5, bearing 6-4, spacer 6-3, force sensor 6-2, simulated bolt head 6-1 and upper test member 3. The lower test member 2 can be removed after the concentric arrangement. The upper end of the dedicated screw 6-5 has a square structure, and a horizontal force application hole is opened through the shaft center. The dedicated screw 6-5 has a bearing 6-4, a spacer 6-3, and a force sensor in order from top to bottom. 6-2, penetrating the shaft hole of the simulated bolt head 6-1, the lower end of the dedicated screw 6-5 and the lower test member 2 are screwed together, and the upper test member 3 is tightened by the dedicated screw 6-5 Therefore, a prestressing force in the normal direction is applied.

  As shown in FIGS. 7 and 8, the structures of the load application component 5A, the load application component 5B, the load application component 5C, and the load application component 5D are the same, and all are the force sensor component 5-1, the preload application nut. 5-2A, including a post-loading nut 5-2B and a flange 5-3, the load-applying component 5A vertically mounted, one end of the sensor component 5-1 of the load-applying component 5B is cantilevered by the upper test member 3 The other end is fixedly connected to the flange 5-3 through the screw, the front load applying nut 5-2A and the rear load applying nut 5-2B, and the flange 5-3 is fixedly connected to the cross beam 7. It is attached. As shown in FIG. 8, one end of the sensor component 5-1 of the load applying component 5C mounted horizontally is fixedly coupled to the end of the upper test member 3 through the coupling member 8, and the other end is The flange 5-3 of the load application component 5C is fixedly attached to the right column 4B through the screw, the front load application nut 5-2A, and the rear load application nut 5-2B. The flange 5-3 of the load application component 5D is fixedly attached to the left column 4A.

  The present invention can perform the following five types of characteristic test measurement using the above measuring apparatus.

Method 1
The steps for conducting the prestress force test in the vertical direction are as follows. 3 and 9, the lower test member 2 is fixed to the case 1, the upper test member 3 is disposed on the upper surface of the lower test member 2, and each measurement plane of the lower test member 2 and the upper test member 3 is measured. A number of vertical displacement sensors 9 are installed, and the lower end of the dedicated screw 6-5 is inserted into the bearing 6-4, the spacer 6-3, and the force sensor using the concentric arrangement function of the centering accessory 6-6. 6-2, after passing through the hole of the simulated bolt head 6-1, the lower end of the dedicated screw 6-5 is screwed to the lower test member 2, the centering accessory 6-6 is removed, and the dedicated screw 6-5 The upper test member 3 and the lower test member 2 are pressurized by rotating the square portion at the upper end with the dedicated screw 6-5, thereby applying a prestressing force in the normal direction. At this time, the prestress force is detected by the force sensor 6-2, and each displacement sensor 9 in the vertical direction simultaneously detects the relative displacement in the normal direction of the upper test member 3 and the lower test member 2, and the normal direction The relative displacement is a predeformation of the bolt joint surface unit. By adjusting the dedicated screw 6-5 of the preload component 6 to change the prestressing force and repeating the above steps, the relationship between the prestressing force of the bolt joint surface unit and the predeformation can be acquired.

Method 2
The steps for conducting a normal load test are as follows. 4 and 9, the lower test member 2 is fixed to the case 1, the upper test member 3 is arranged on the lower test member 2, and a number of measurement planes of the lower test member 2 and the upper test member 3 are measured. The vertical displacement sensor 9 is installed, and the load application component 5 </ b> A and the load application component 5 </ b> B are attached to the two cantilever beams of the upper test member 3. First, the step of applying a prestress force in a certain normal direction through the dedicated screw 6-5 and applying the prestress force in the normal direction is the same as the step of the prestress force test described above. Referring to FIG. 7, one end of each of the load application component 5A and the load application component 5B is fixedly coupled to the cantilever of the upper test member 3, and the other end of each of the load application component 5A and the load application component 5B is the transverse beam 7. A load application component 5A that is vertically attached by adjusting the front load application nut 5-2A and the rear load application nut 5-2B of the load application component 5A and the load application component 5B, coupled to the upper flange 5-3. The load application component 5B applies the same normal direction use load, and the normal use load may be a positive number or a negative number, that is, a pulling or pushing load can be applied. . The normal use load applied by the load applying component 5A and the load applying component 5B is detected by the force sensor 5-1 of each of the load applying component 5A and the load applying component 5B, and the vertical direction shown in FIG. The displacement sensor 9 detects the relative displacement in the normal direction generated by the load in the normal direction of the upper test member 3 and the lower test member 2. That is, the relative displacement in the normal direction is a deformation in the normal direction caused by the load in the normal direction of the bolt joint surface unit, and the load in the normal direction applied by the load application component 5A and the load application component 5B. And by repeating the above steps, it is possible to obtain the relationship between the normal-direction use load of the bolt joint surface unit and the normal-direction deformation caused by the normal-direction use load.

Method 3
The steps for conducting a load test in the tangential direction are as follows. Referring to FIG. 5, the lower test member 2 is fixed to the case 1, the upper test member 3 is disposed above the lower test member 2, and several horizontal planes are measured on each measurement plane of the lower test member 2 and the upper test member 3. A direction displacement sensor 9 is installed. First, the method of applying a prestressing force in a certain normal direction through the dedicated screw 6-5 and applying the prestressing force in the normal direction is the same as the method of the prestressing force test described above. One coupling member 8 and a load application component 5C are horizontally attached to one side (right side) of the upper test member 3, and the axis S of the load application component 5C passes through the coupling surface of the upper test member 3 and the lower test member 2. At the same time, one end of the force sensor component 5-1 of the load application component 5C horizontally attached to the preload component 6 intersects at right angles with the dedicated screw axis L of the preload component 6 (see the intersection A in FIG. 10). The other end of the force sensor component 5-1 is connected to the flange 5-3 through its screw, the front load application nut 5-2A and the rear load application nut 5-2B, and the flange 5-3 is It is fixedly attached to the right column 4B. By adjusting the preload application nut 5-2A and the postload application nut 5-2B of the load application component 5C, the tangential service load may be applied, and the tangential service load may be positive or negative. . The tangential use load applied by the load application component 5C is detected by the force sensor 5-1 of the load application component 5C, and the tangential use load of the upper test member 3 and the lower test member 2 by the horizontal displacement sensor 9 is detected. Detects the tangential relative displacement generated by. That is, the relative displacement in the tangential direction is a deformation in the tangential direction generated by the tangential use load of the bolt joint surface unit. The tangential use load applied by the load application component 5C is changed, and the above steps are repeated. Thus, the relationship between the tangential usage load of the bolt joint surface unit and the tangential deformation caused by the tangential usage load can be acquired.

Method 4
The steps to perform a working load test of the bending moment are as follows. 4 and 9, the test apparatus used for the bending load use load test is the same as the test apparatus for the normal use load test, and the method for applying the prestress force is also the same. However, the applied load in the normal direction is different, and the load application component 5A and the load application component 5B attached to the left and right sides are adjusted to the front load application nut 5-2A and the rear load application nut 5-2B. Then, the use load of the bending moment is applied by applying the use load of the same magnitude and the opposite normal direction by the load application component 5A and the load application component 5B attached vertically to the left and right sides. The normal use load is detected by the force sensor 5-1 of the load application component 5A and the load application component 5B mounted vertically, and the bending moment is calculated based on the two normal use loads in the opposite direction. To do. The vertical displacement sensor 9 detects the vertical relative displacement of the upper test member 3 and the lower test member 2, and the vertical displacement of the upper test member 3 and the lower test member 2 is determined by the bending moment of the bolt joint surface unit. Use the bending moment by acquiring the generated tilt angle deformation and adjusting the load application part 5A, the front load application nut 5-2A, and the rear load application nut 5-2B of the load application part 5B. By changing the load and repeating the above steps, it is possible to acquire a relationship in which the inclination angle deformation of the bolt joint surface unit changes due to a change in the use load of the bending moment.

Method 5
The steps for performing the torque use load test are as follows. Referring to FIG. 6, the lower test member 2 is fixed to the case 1, and the upper test member 3 is disposed above the lower test member 2. First, an apparatus and method for applying a prestress force in a normal direction and applying a prestress force in a normal direction are the same as the prestress force test method. The coupling member 8 and the load application component 5C and the coupling member 8 and the load application component 5D are horizontally attached to the left and right sides of the upper test member 3, respectively. The axis S of the load application component 5C and the load application component 5D is the upper test member 3. Through the joint surface of the lower test member 2 and perpendicular to the dedicated screw axis L of the preload component, and from the axis S of the load application component 5C and the load application component 5D which are horizontal on the left and right sides. The distance to the axis L is the same, but the position and direction are opposite, one in front of the screw axis L (intersection B in FIG. 10) and the other in the rear of the screw axis L (FIG. 10 intersections C). One end of the force sensor component 5-1 of the load application component 5C is fixedly coupled to the right side of the upper test member 3 through the coupling member 8, and the other end thereof is a screw, a preload application nut 5-2A, and a rear load application nut 5 The flange 5-3 of the load application component 5C is fixedly attached to the right column 4B. One end of the force sensor component 5-1 of the load application component 5D is fixedly coupled to the left side of the upper test member 3 through the other coupling member 8, and the other end is applied with its screw, a preload application nut 5-2A, and a rear load application. The flange 5-3 of the load applying component 5D is fixedly attached to the left column 4A by being coupled to the flange 5-3 through the nut 5-2B. The load application component 5C and the load application component 5D are adjusted to adjust the front load application nut 5-2A and the rear load application nut 5-2B, and apply the use load in the tangential direction of the same size and in the opposite direction. The tangential use load is detected by the force sensor 5-1 of the load application component 5C and the load application component 5D mounted horizontally, and the torque use load is calculated based on the two tangential use loads in opposite directions. A horizontal displacement sensor 9 (plural) detects the horizontal relative displacement of the upper test member 3 and the lower test member 2, and the bolt joint surface is determined from the horizontal relative displacement of the upper test member 3 and the lower test member 2. The unit acquires the rotation angle deformation generated by the torque use load, and adjusts the load application component 5C attached horizontally and the front load application nut 5-2A and the rear load application nut 5-2B of the load application component 5D. By changing the torque use load and repeating the above steps, it is possible to acquire a relationship in which the rotation angle deformation of the bolt joint surface unit changes due to a change in the torque use load.

  As described above, according to the apparatus and method of the present invention, the test on the relationship between the prestressing force and the pre-deformation of the bolt joint surface unit, the test on the relationship in which the deformation in the normal direction changes due to the change in the load used in the normal direction, Tests related to changes in tangential deformation due to changes in load applied in tangential direction, tests related to changes in tilt angle deformation due to changes in use load of bending moment, and tests related to changes in rotational angle deformation due to changes in torque load applied It can be completed and realize the full static characteristics test of the pre-stress force and total working load of the bolt joint surface unit.

1 Case 2 Lower test member 3 Upper test member 4A Left column 4B Right column 5A Load application component 5B Load application component 5C Load application component 5D Load application component 6 Preload component 7 Cross beam 8 Joint member 9 Displacement sensor 11 Member A
12 Member B
13 Bonding surface A
14 Bonding surface B
15 Joint surface C
5-1 Force sensor component 5-2A Preload application nut 5-2B Postload application nut 5-3 Flange 6-1 Simulated bolt head 6-2 Force sensor 6-3 Spacer 6-4 Bearing 6-5 Dedicated screw 6- 6 Centering accessory L Dedicated screw axis S Load application component axis a Intersection of load application component axis S and dedicated screw axis L during tangential static characteristic test b Right load application component axis S and dedicated screw during torque static characteristic test Intersection of axis L c Intersection of left-hand load application component axis S and dedicated screw axis L during torque static characteristic test

Claims (9)

A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). Combined with
A lower test member (2) is disposed on the work table of the case (1), and an upper test member (3) is disposed on the lower test member (2), and above the upper test member (3). A preload component (6) for sequentially connecting the upper test member (3) and the lower test member (2) is installed between the transverse beams (7),
One load application component is symmetrically attached to each of the cantilever beams at both ends of the upper test member (3), which are respectively referred to as a first load application component (5A) and a second load application component (5B). The vertical upper portions of the first load application component (5A) and the second load application component (5B) are respectively coupled to the transverse beam (7),
One coupling member (8) is attached to each end of the cantilever at both ends of the upper test member (3), and between the coupling member (8) and the right column (4B) of the transverse beam (7), Between the coupling member (8) and the left column (4A) of the cross beam (7), load application parts having horizontal axes are respectively installed, and a third load application part (5C) and a fourth load application part ( 5D), a static characteristic test apparatus for a full load of a bolt joint surface unit. The structure of the preload component (6) includes a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5) and Including centering accessory (6-6)
The centering accessory (6-6) is composed of two stepped semicircular rings. The dedicated screw (6-5), the bearing (6-4), the spacer (6-3), and the force sensor ( 6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are arranged concentrically,
The upper end of the dedicated screw (6-5) has a square structure, and a horizontal force application hole is opened through the shaft center. The dedicated screw (6-5) is sequentially moved from the top to the bottom with the bearing (6- 4), the spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated screw (6 The static load test apparatus for a full load of a bolt joint surface unit according to claim 1, wherein the lower end of -5) and the lower test member (2) are screwed together. The first load application component (5A) and the second load application component (5B) have the same structure and are vertically mounted, and are all force sensor components (5-1) and preload application nuts (5-2A). ), Including post-load application nut (5-2B) and flange (5-3),
One end of each of the force sensor components (5-1) is fixedly coupled to cantilever beams at both ends of the upper test member (3), and the other end of each of the force sensor components (5-1) is The screw, the front load application nut (5-2A) and the rear load application nut (5-2B) are connected to the corresponding flange (5-3) attached to the cross beam (7), respectively. The apparatus for testing static characteristics of a full load of a bolt joint surface unit according to claim 2. The third load application component (5C) and the fourth load application component (5D) have the same structure and are mounted horizontally, and are all force sensor components (5-1) and preload application nuts (5-2A). ), Including post-load application nut (5-2B) and flange (5-3),
One end of each of the force sensor components (5-1) is fixedly coupled to both ends of the upper test member (3) through the coupling member (8), and each of the force sensor components (5-1). The other ends of the left and right struts 4A and 4B are attached to the left strut 4A and the right strut 4B through the screws, the front load application nut 5-2A and the rear load application nut 5-2B. The apparatus for testing a static characteristic of a full load of a bolt joint surface unit according to claim 2, characterized in that it is coupled to a flange (5-3). A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). The lower test member (2) is disposed on the work table of the case (1), the upper test member (3) is disposed on the lower test member (2), and the upper test member (3 ) And a cross beam (7) between the upper test member (3) and the lower test member (2).
Here, the structure of the preload component (6) is a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5). ) And a centering accessory (6-6), the centering accessory (6-6) is composed of two stepped semicircular rings, and includes the dedicated screw (6-5) and the bearing (6-4). The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are arranged concentrically, The upper end of the screw (6-5) has a square structure, and a horizontal force application hole is formed through the shaft center, and the dedicated screw (6-5) is sequentially inserted from the top to the bottom of the bearing (6-4). , The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated screw The lower end of (6-5) and the lower test member (2) are screwed together,
The step of performing a prestress force test in the vertical direction using the device,
The lower test member (2) is fixed to the case (1), the upper test member (3) is arranged on the upper surface of the lower test member (2), and the lower test member (2) and the upper test are arranged. A number of vertical displacement sensors (9) are installed on each measurement plane of the member (3), and using the concentric arrangement function of the centering accessory (6-6), the dedicated screw (6-5) The lower end sequentially penetrates the holes of the bearing (6-4), the spacer (6-3), the force sensor (6-2), and the simulated bolt head (6-1), and then the dedicated screw ( The lower end of 6-5) is screwed to the lower test member (2), the centering accessory (6-6) is removed, and the square portion at the upper end of the dedicated screw (6-5) is rotated. The upper test member (3) and the lower test member (2) are pressurized by a dedicated screw (6-5), thereby applying a prestressing force in the normal direction,
At this time, pre-stress force is detected by the force sensor (6-2), and each of the vertical displacement sensors (9) is in the normal direction of the upper test member (3) and the lower test member (2). The relative displacement in the normal direction is a pre-deformation of the bolt joint surface unit, and the pre-stress force is adjusted by adjusting the dedicated screw (6-5) of the pre-load component (6). change,
By repeating the above steps, the relationship between the prestressing force and the pre-deformation of the bolt joint surface unit is obtained. A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). The lower test member (2) is disposed on the work table of the case (1), the upper test member (3) is disposed on the lower test member (2), and the upper test member (3 ) And a cross-beam (7) between the upper test member (3) and the lower test member (2) are installed in order to preload parts (6), both ends of the upper test member (3) One load application component is symmetrically attached to each of the cantilever beams, which are referred to as a first load application component (5A) and a second load application component (5B), respectively, and the first load application component (5A) and The second load applying component (5B) uses a device that is vertically connected to the cross beam (7).
Here, the structure of the preload component (6) is a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5). ) And a centering accessory (6-6), the centering accessory (6-6) is composed of two stepped semicircular rings, and includes the dedicated screw (6-5) and the bearing (6-4). The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are positioned concentrically, The upper end of the dedicated screw (6-5) has a square structure, and a horizontal force application hole is formed through the shaft center, and the dedicated screw (6-5) is sequentially inserted into the bearing (6-4) from top to bottom. ), The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated scrub. The lower end of the screw (6-5) and the lower test member (2) are screwed together,
The first load application component (5A) and the second load application component (5B) have the same structure and are vertically mounted, and are all force sensor components (5-1) and preload application nuts (5- 2A), a post-load application nut (5-2B) and a flange (5-3), each one end of the force sensor component (5-1) is a cantilever at both ends of the upper test member (3). The other end of each of the force sensor parts (5-1) is connected to the transverse beam through its screw, the front load application nut (5-2A) and the rear load application nut (5-2B). Coupled to the corresponding flanges (5-3) attached to (7),
The step of performing a normal use load test using the device,
The lower test member (2) is fixed to the case (1), the upper test member (3) is disposed on the lower test member (2), and the lower test member (2) and the upper test member ( 3) A number of vertical displacement sensors (9) are installed on each measurement plane, and the first load application component (5A) and the second load application are applied to the two cantilever beams of the upper test member (3). A part (5B) is attached, and the lower end of the dedicated screw (6-5) is sequentially inserted into the bearing (6-4) and the spacer (6) using the concentric arrangement function of the centering accessory (6-6). 6-3) After passing through the holes of the force sensor (6-2) and the simulated bolt head (6-1), the lower end of the dedicated screw (6-5) is attached to the lower test member (2). Screw the joint, remove the centering accessory (6-6), rotate the square at the upper end of the dedicated screw (6-5) to the dedicated screw (6-5) And pressurizing the upper test member (3) and the lower test member (2), thereby applying a prestressing force in the normal direction,
One end of each of the first load application component (5A) and the second load application component (5B) is fixedly coupled to a cantilever of the upper test member (3), and the first load application component (5A) And the other end of the second load application component (5B) is coupled to the flange (5-3) on the transverse beam (7), and the first load application component (5A) and the second load application component (5B). By adjusting the front load application nut (5-2A) and the rear load application nut (5-2B), the first load application component (5A) and the second load application component mounted vertically (5B) to apply the same normal use load, apply pulling or pushing load if necessary,
The normal load applied by the first load application component (5A) and the second load application component (5B) is the same as that of the first load application component (5A) and the second load application component (5B). Detected by each of the force sensors (5-1), and generated by the normal use load of the upper test member (3) and the lower test member (2) by the vertical displacement sensor (9). Detect relative displacement,
The relative displacement in the normal direction is a normal direction deformation caused by a load applied in the normal direction of the bolt joint surface unit, and is applied by the first load application component (5A) and the second load application component (5B). Change the working load in the normal direction,
By repeating the above steps, the relationship between the normal load of the bolt joint surface unit and the deformation in the normal direction caused by the normal load is obtained. Test method for static characteristics at full load. A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). The lower test member (2) is disposed on the work table of the case (1), the upper test member (3) is disposed on the lower test member (2), and the upper test member (3 ) And the cross beam (7) between the upper test member (3) and the lower test member (2), a preload component (6) is sequentially installed, and one of the upper test member (3) is installed. One coupling member (8) is attached to each end of the cantilever on the side, and a third load with a horizontal axis between the coupling member (8) and the right column (4B) of the lateral beam (7). Using the device where the applied component (5C) is installed,
Here, the structure of the preload component (6) is a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5). ) And a centering accessory (6-6), the centering accessory (6-6) is composed of two stepped semicircular rings, and includes the dedicated screw (6-5) and the bearing (6-4). The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are arranged concentrically, The upper end of the screw (6-5) has a square structure, and a horizontal force application hole is formed through the shaft center, and the dedicated screw (6-5) is sequentially inserted from the top to the bottom of the bearing (6-4). , The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated screw The lower end of (6-5) and the lower test member (2) are screwed together,
The third load application component (5C) is mounted horizontally and includes a force sensor component (5-1), a front load application nut (5-2A), a rear load application nut (5-2B), and a flange (5- 3), one end of the force sensor component (5-1) is fixedly coupled to one end of the upper test member (3) through the coupling member (8), and the force sensor component (5-1) The other end is connected to the corresponding flange (5-3) attached to the right column (4B) through the screw, the front load application nut (5-2A) and the rear load application nut (5-2B). And
The step of performing a tangential use load test using the device is as follows:
The lower test member (2) is fixed to the case (1), the upper test member (3) is disposed above the lower test member (2), and the lower test member (2) and the upper test member are arranged. A number of horizontal displacement sensors (9) are installed on each measurement plane in (3), and the lower end of the dedicated screw (6-5) is used by utilizing the concentric arrangement function of the centering accessory (6-6). Are sequentially passed through the holes of the bearing (6-4), the spacer (6-3), the force sensor (6-2), and the simulated bolt head (6-1), and then the dedicated screw (6 -5) is screwed to the lower test member (2), the centering accessory (6-6) is removed, and the square of the upper end of the dedicated screw (6-5) is rotated to The upper test member (3) and the lower test member (2) are pressurized by a screw (6-5), thereby applying a prestressing force in the normal direction,
One coupling member (8) and the third load application component (5C) are horizontally attached to one side of the upper test member (3), and the axis S of the third load application component (5C) is It passes through the joint surface of the upper test member (3) and the lower test member (2), and intersects the axis L of the dedicated screw (6-5) of the preload component (6) at a right angle, and is mounted horizontally. One end of the force sensor component (5-1) of the third load application component (5C) is fixedly coupled to the right side of the coupling member (8), and other than the force sensor component (5-1). The end is connected to the flange (5-3) through the screw, the front load applying nut (5-2A) and the rear load applying nut (5-2B), and the flange (5-3) is connected to the right column. (4B) is fixedly attached,
The tangential working load is applied by adjusting the preloading nut (5-2A) and the postloading nut (5-2B) of the third load application component (5C). Is a positive or negative number, and the tangential load applied by the third load application component (5C) is detected by the force sensor (5-1) of the third load application component (5C) Detecting the relative displacement in the tangential direction generated by the use load in the tangential direction of the upper test member (3) and the lower test member (2) by the displacement sensor (9) in the direction;
The relative displacement in the tangential direction is a tangential deformation generated by the tangential use load of the bolt joint surface unit, and the tangential use load applied by the third load application component (5C) is changed.
By repeating the above steps, the relationship between the tangential working load of the bolt joint surface unit and the tangential deformation caused by the tangential working load is obtained, and the total load of the bolt joint surface unit is obtained. Static characteristics test method. A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). The lower test member (2) is disposed on the work table of the case (1), the upper test member (3) is disposed on the lower test member (2), and the upper test member (3 ) And a cross-beam (7) between the upper test member (3) and the lower test member (2) are installed in order to preload parts (6), both ends of the upper test member (3) One load application component is symmetrically attached to each of the cantilever beams, which are respectively referred to as a first load application component (5A) and a second load application component (5B), and the first load application component (5A) and the The second load application component (5B) uses a device that is vertically coupled to the cross beam (7).
Here, the structure of the preload component (6) is a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5). ) And a centering accessory (6-6), the centering accessory (6-6) is composed of two stepped semicircular rings, the dedicated screw (6-5) and the bearing (6-4) The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are positioned concentrically, The upper end of the dedicated screw (6-5) has a square structure, and a horizontal force application hole is formed through the shaft center, and the dedicated screw (6-5) is sequentially inserted into the bearing (6-4) from top to bottom. ), The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated scrub. It said lower test member and the lower end of-menu (6-5) (2) is screwed,
The first load application component (5A) and the second load application component (5B) have the same structure and are vertically mounted, and are all force sensor components (5-1), preload application nuts (5- 2A), a post-load application nut (5-2B) and a flange (5-3), each one end of the force sensor component (5-1) is a cantilever at both ends of the upper test member (3). The other end of each of the force sensor parts (5-1) is connected to the transverse beam through its screw, the front load application nut (5-2A) and the rear load application nut (5-2B). Coupled to the corresponding flanges (5-3) attached to (7),
The step of performing a bending moment use load test using the device is as follows:
The lower test member (2) is fixed to the case (1), the upper test member (3) is disposed above the lower test member (2), and the lower test member (2) and the upper test member ( 3) Install several displacement sensors (9) on each measurement plane and use the concentric arrangement function of the centering accessory (6-6) to place the lower end of the dedicated screw (6-5) in sequence. After passing through the holes of the bearing (6-4), the spacer (6-3), the force sensor (6-2), and the simulated bolt head (6-1), the special screw (6-5) The lower end is screwed to the lower test member (2), the centering accessory (6-6) is removed, the upper end square of the dedicated screw (6-5) is rotated, and the dedicated screw (6-5) is removed. ) To pressurize the upper test member (3) and the lower test member (2) and apply a prestressing force in the normal direction,
The front load application nut (5-2A) and the rear load application nut (5-2B) of the first load application component (5A) and the second load application component (5B) mounted vertically on the left and right sides The load is applied to the first load application component (5A) and the second load application component (5B), which are vertically attached to the left and right sides, in the same magnitude and in the opposite normal direction. By applying a working load of bending moment,
The use load in the normal direction is detected by the force sensor (5-1) of the first load application component (5A) and the second load application component (5B) mounted vertically, and in two opposite directions. Calculate the bending moment based on the load used in the normal direction,
The vertical displacement of the upper test member (3) and the lower test member (2) is detected by the displacement sensor (9) in the vertical direction, and the upper test member (3) and the lower test member (2) are detected. The inclination angle deformation generated by the bending moment of the bolt joint surface unit is obtained from the relative displacement in the vertical direction of the first load application component (5A) and the second load application component (5B) attached vertically. Adjust the front load application nut (5-2A) and the rear load application nut (5-2B) to change the bending moment load.
By repeating the above steps, a relationship is obtained in which the inclination angle deformation of the bolt joint surface unit changes according to changes in the use load of the bending moment, and a static characteristic test method for the total load of the bolt joint surface unit. A lateral beam (7) is installed above the case (1), and the lateral beam (7) is fixed to the case (1) through the left column (4A) and the right column (4B). The lower test member (2) is disposed on the work table of the case (1), the upper test member (3) is disposed on the lower test member (2), and the upper test member (3 ) And a cross-beam (7) between the upper test member (3) and the lower test member (2) are installed in order to preload parts (6), both ends of the upper test member (3) One connecting member (8) is attached to each end of the cantilever, and between the connecting member (8) and the right column (4B) of the cross beam (7), the connecting member (8) and the Between the left column (4A) of the lateral beam (7), load application parts with horizontal axes are respectively installed, which are referred to as a third load application part (5C) and a fourth load application part (5D), respectively.
Here, the structure of the preload component (6) is a simulated bolt head (6-1), a force sensor (6-2), a spacer (6-3), a bearing (6-4), a dedicated screw (6-5). ) And a centering accessory (6-6), the centering accessory (6-6) is composed of two stepped semicircular rings, the dedicated screw (6-5) and the bearing (6-4) The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the upper test member (3), and the lower test member (2) are positioned concentrically, The upper end of the dedicated screw (6-5) has a square structure, and a horizontal force application hole is formed through the shaft center, and the dedicated screw (6-5) is sequentially inserted into the bearing (6-4) from top to bottom. ), The spacer (6-3), the force sensor (6-2), the simulated bolt head (6-1), the shaft hole of the upper test member (3), and the dedicated scrub. It said lower test member and the lower end of-menu (6-5) (2) is screwed,
The structures of the third load application component (5C) and the fourth load application component (5D) are the same and horizontally mounted, and are all force sensor components (5-1) and preload application nuts (5-2A). , A post-load application nut (5-2B) and a flange (5-3), and one end of each of the force sensor parts (5-1) is connected to the upper test member (3) through the coupling member (8). The other end of each of the force sensor parts (5-1) is passed through its screw, the front load application nut (5-2A) and the rear load application nut (5-2B). , Coupled to the corresponding flanges (5-3) attached to the left column (4A) and the right column (4B), respectively.
The step of performing a torque use load test using the device comprises:
The lower test member (2) is fixed to the case (1), the upper test member (3) is disposed above the lower test member (2), and the lower test member (2) and the upper test member are arranged. Several displacement sensors (9) are installed on each measurement plane in (3), and the lower end of the dedicated screw (6-5) is sequentially placed using the concentric arrangement function of the centering accessory (6-6). After passing through the holes of the bearing (6-4), the spacer (6-3), the force sensor (6-2), and the simulated bolt head (6-1), the dedicated screw (6-5) The lower test member (2) is screwed to the lower test member (2), the centering accessory (6-6) is removed, the upper end of the dedicated screw (6-5) is rotated, and the dedicated screw (6 -5) pressurizing the upper test member (3) and the lower test member (2), thereby applying a prestressing force in the normal direction,
One horizontal load application component is attached to the left and right sides of the upper test member (3), which are referred to as a third load application component (5C) and a fourth load application component (5D), respectively. 5C) and the axis S of the fourth load applying component (5D) pass through the connecting surface of the upper test member (3) and the lower test member (2), and the dedicated screw of the preload component (6-5). The axis of the dedicated screw (6-5) from the axis S of the third load application component (5C) and the fourth load application component (5D) which is perpendicular to the axis L and is horizontal on the left and right sides. The distance to L is the same, but the position and direction are opposite, one is in front of the axis L of the screw (6-5) and the other is the axis L of the screw (6-5). One end of the force sensor component (5-1) of the third load application component (5C) through the coupling member (8). The right test column (4B) is fixedly coupled to the right side of the upper test member (3) and the other end is threaded through the screw, the front load application nut (5-2A) and the rear load application nut (5-2B). To the flange (5-3) fixedly attached to
One end of the force sensor component (5-1) of the fourth load applying component (5D) is fixedly coupled to the left side of the upper test member (3) through the other coupling member (8), and the other end. Is connected to the flange (5-3) on the left column (4A) through its screw, the front load application nut (5-2A) and the rear load application nut (5-2B),
Adjust the third load application component (5C), the fourth load application component (5D), the front load application nut (5-2A), and the rear load application nut (5-2B), which are horizontal. Apply a working load in the tangential direction in the opposite direction and
The tangential working load is detected by the force sensor (5-1) of the third load applying component (5C) and the fourth load applying component (5D) mounted horizontally, and two opposite tangential directions. Calculate the torque usage load based on the usage load of
The horizontal displacement of the upper test member (3) and the lower test member (2) is detected by the horizontal displacement sensor (9), and the upper test member (3) and the lower test member (2) are detected. The rotation angle deformation generated from the use load of the torque of the bolt joint surface unit is acquired from the relative displacement in the horizontal direction, and the preload of the third load application component (5C) and the fourth load application component (5D) Adjust the applied nut (5-2A) and the post-load applied nut (5-2B) to change the torque load.
By repeating the above steps, a relationship is obtained in which the rotational angle deformation of the bolt joint surface unit changes according to a change in the torque use load.

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