A high-precision testing device and testing method based on stress deformation of fasteners

Abstract

The invention relates to the technical field of fastener stress relaxation deformation testing equipment, and discloses a high-precision testing device based on fastener stress deformation and a testing method thereof, comprising a first mounting frame, which is placed on the ground; a conveying component, which is arranged at one end of the first mounting frame, and the conveying component fixes and conveys bolt fasteners through an internal fixing plate; a pre-installation component, and the pre-installation component is located above the conveying component, and the pre-installation component pre-treats the bolt fasteners through a drilling rig and a second fixing frame; a testing component, which tests the bolt fasteners through a first installation tube and a second installation tube thereon; the invention can conveniently and quickly install a strain gauge inside a bolt fastener by arranging the pre-installation component, and can quickly convey the bolt fastener to the testing component after the strain gauge is installed, which can reduce the operation of the staff and make the test easier.

Description

Technical Field

[0001] The invention relates to the technical field of fastener stress relaxation deformation testing equipment, in particular to a high-precision testing device based on fastener stress deformation and a testing method thereof. Background Art

[0002] Stress testing of fasteners is often used to evaluate the performance of fasteners under specific environments and conditions of use. Test methods include static tension, dynamic tension, compression, bending, and shear. These tests can measure the deformation, failure mode, and strength of fasteners when subjected to stress. Test environment: Ensure that the test environment meets the use requirements of the fasteners, including factors such as temperature, humidity, and corrosive substances; Test equipment: Select appropriate test equipment, such as universal testing machines, pressure testing machines, etc., to ensure the accuracy and reliability of the test results; Test method: Select appropriate test methods according to the type and purpose of the fasteners, such as static tension, dynamic tension, etc.; Test cycle: Determine the test cycle based on actual use to ensure that the fasteners can maintain good performance during use.

[0003] For example, the fastener stress relaxation deformation testing device with application number 202320541187.0, the fastener stress relaxation deformation testing device, the testing device includes a connecting part connected to the fastener to be tested, and also includes a measuring part for testing the deformation of the fastener, the connecting part includes an upper connecting sleeve and a lower connecting sleeve, and the measuring part includes an upper extension piece and a lower extension piece. The measuring device of the device is easy to use and has high precision. It can be used for conventional fasteners, such as those with specifications between M3-M16. The overall stress relaxation deformation measurement under normal and high temperature environments is close to the actual working conditions and can better meet the life design and safety factor considerations in engineering practice applications. However, in the actual production process, this structure is not fully disclosed for the transmission of fasteners, and the details of the test structure are not fully disclosed, and it cannot achieve the effect of effective transportation and improve the detection effect.

[0004] Nowadays, when performing stress relaxation deformation tests on bolt fasteners, a hole can be punched at one end of the bolt fastener, a strain gauge can be installed in the hole, and the bolt fastener can be installed on a testing machine. The stress relaxation deformation of the bolt fastener can be tested by simulating and accelerating the installation environment. However, the operation of installing the strain gauge is complicated, which affects the testing efficiency of the bolt fastener. Summary of the invention

[0005] The object of the present invention is to provide a high-precision testing device and a testing method based on stress and deformation of fasteners, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A high-precision testing device based on stress and deformation of fasteners and a testing method thereof, comprising:

[0008] A first mounting frame, wherein the first mounting frame is placed on the ground;

[0009] A conveying assembly, the conveying assembly is arranged at one end of the first mounting frame, and the conveying assembly fixes and conveys the bolt fasteners through an internal fixing plate;

[0010] A pre-installation component, which is arranged on the other side of the first mounting frame and is located above the conveying component, and the pre-installation component pre-processes the bolt fasteners through a drilling rig and a second fixing frame;

[0011] The pre-installed assembly includes a support tube, a mounting frame, a first mounting groove, a first hydraulic cylinder, a drill bit, a second mounting groove, a second hydraulic cylinder, and a mounting ring. The mounting frame is fixedly mounted on the support tube. The first mounting groove and the second mounting groove are independently penetrated and opened at the top of the mounting frame in the vertical direction. The first hydraulic cylinder and the second hydraulic cylinder are fixedly mounted at the top of the mounting frame. The first hydraulic cylinder and the first mounting groove are respectively located in the first mounting groove and the second mounting groove and form a movable penetration.

[0012] The drilling rig is fixedly mounted on the bottom output end of the first hydraulic cylinder and is movably connected along the extension direction of the inner groove wall of the first mounting groove. The mounting ring is fixedly mounted on the bottom output end of the second hydraulic cylinder and is movably connected along the extension direction of the inner groove wall of the second mounting groove, so that the outer diameter of the mounting ring fits the inner diameter of the second mounting groove.

[0013] A test assembly is arranged inside the first mounting frame, and the test assembly tests the bolt fastener through the first mounting tube and the second mounting tube thereon.

[0014] Optionally, the pre-installed assembly also includes a plurality of connecting rods, a fixing ring, a first spring, a support member, and a second fixing frame. The plurality of connecting rods are fixedly mounted on the bottom end of the fixing ring, the support members are respectively fixedly mounted on the bottom ends of the corresponding connecting rods, the fixing ring is fixedly mounted on the bottom end of the outer wall of the output end of the second hydraulic cylinder, one end of the first spring is fixedly mounted on the bottom end of the fixing ring, the other end of the first spring is fixedly mounted on one end of the second fixing frame, and the second fixing frame is slidably mounted on the output end of the second hydraulic cylinder.

[0015] Optionally, a plurality of second slide grooves are provided on the inner wall of the second fixed frame, and third slide grooves are provided on both sides of the second slide groove walls, and the opening diameter of the front end portion of the third slide groove is smaller than the opening diameter of the rear end portion, and a plurality of second slide groove walls are slidably mounted with fixed columns, and a rubber pad is fixedly mounted on the end of the fixed column, and the slider is slidably mounted on the corresponding third slide groove wall, and a second spring is fixedly mounted on one side of the third slide groove wall, and the second spring squeezes the slider along the extension direction of the third slide groove, and at the same time, the slider clamps the fixed column passing through the middle;

[0016] A mounting shell is installed on the inner wall of the second fixing frame, a resistance strain gauge is fixedly installed on the bottom end of the mounting shell, and the mounting shell is located at one side of the fixing column.

[0017] Optionally, a plurality of first movable grooves are provided at the top of the second fixed frame, the connecting rods and the supporting members are slidably installed on the inner sides of the groove walls corresponding to the first movable grooves, the first movable grooves are communicated with the corresponding second sliding grooves, one end of the fixed column extends into the corresponding first movable grooves, a second movable groove is provided at the top of the second fixed frame, a sliding plate is fixedly installed at one end of the output end of the second hydraulic cylinder, the sliding plate is slidably installed on the groove walls of the second movable grooves, and a pressure plate is fixedly installed at one end of the inner wall of the second fixed frame.

[0018] Optionally, a support base is fixedly installed on the bottom end of the outer wall of the first mounting frame, a rotating groove and a first slide groove are opened on the top of the support base, the rotating groove is annular, the first slide groove is arc-shaped, the first slide groove and the rotating groove are located at the same center of a circle, the support cylinder is rotatably installed on the rotating groove wall, a driving motor is fixedly installed on the top of the support base, the driving motor is located at the center of the inner wall of the rotating groove, a mounting shaft is fixedly installed on the output end of the driving motor, a plurality of limiting cylinders are fixedly installed on the outer wall of the mounting shaft, the limiting cylinder is rotatably installed on the inner wall of the support cylinder, a support frame is fixedly installed on the outer wall of the support cylinder, and one end of the support frame is slidably installed on the first slide groove wall.

[0019] Optionally, the conveying assembly includes a first fixed frame, a plurality of fixed slots, a plurality of motor mounting slots, a first motor, a conveying slot, a limiting frame, a second mounting frame, a second motor and an adjusting member, the first fixed frame is fixedly mounted on the top of the first mounting frame, the first fixed frame and the first mounting frame are connected through the conveying slot, a plurality of the fixed slots are arranged on both sides of the slot wall of the conveying slot, a plurality of the motor mounting slots are arranged on the outer wall of the first fixed frame, the first fixed frame is connected to the corresponding fixed slots, the first motors are respectively fixedly mounted on the slot walls of the corresponding motor mounting slots, the output end of the first motor extends to the inside of the fixed slot, and the fixed plate is fixedly mounted on the output end of the first motor;

[0020] The limit frame is fixedly installed on the top of the inner wall of the first mounting frame, and the position of the limit frame corresponds to the conveying groove on the first mounting frame. The second mounting frame is fixedly installed on the top of the inner wall of the first mounting frame. The second motor is fixedly installed on one side of the second mounting frame, and the output end of the second motor extends to the inside of the second mounting frame. The adjustment member is fixedly installed on the output end of the second motor, and the adjustment member is located on one side of the limit frame. The position of the conveying groove corresponds to the first mounting groove or the second mounting groove.

[0021] Optionally, the test assembly includes two brackets, a third hydraulic cylinder, a limit plate, a connecting plate and a pulling plate, the two brackets are fixedly installed on the bottom end of the outer wall of the first mounting frame, and the two brackets are mirror-mounted on the outer wall of the first mounting frame, the third hydraulic cylinder is fixedly installed on one side of the bracket, the limit plate is fixedly installed on one side of the bracket, the limit plates are respectively arranged on the opposite sides of the two brackets, the connecting plate is fixedly installed on the output end of the third hydraulic cylinder, the pulling plate is fixedly installed on one side of the connecting plate by screws, one end of each pulling plate is provided with a slot, one pulling plate is located at the bottom end of the other pulling plate, the first mounting tube is fixedly installed on the slot wall on one pulling plate by screws, the second mounting tube is fixedly installed on the slot wall on the pulling plate on the other side by screws, one end of the first mounting tube and the second mounting tube is provided with a threaded groove, and the threaded grooves on the first mounting tube and the second mounting tube are connected.

[0022] Optionally, a connecting tube is fixedly installed on the top of the first mounting frame, a first cylinder is fixedly installed on the top of the connecting tube, an output end of the first cylinder extends into the interior of the connecting tube, a rotating motor is fixedly installed on the output end of the first cylinder, and a rotating frame is fixedly installed on the output end of the rotating motor by screws.

[0023] Optionally, a third movable groove is provided on one side of the mounting frame, a conveying pump is fixedly installed on the groove wall of the third movable groove, a connecting pipe is fixedly installed on one end of the conveying pump, a discharge plate is fixedly installed on one end of the connecting pipe, a discharge groove is provided on one end of the discharge plate, the discharge groove penetrates the discharge plate, the discharge groove is connected with the connecting pipe, a nozzle is fixedly installed on one end of the groove wall of the discharge groove, the discharge plate is slidably installed on the groove wall of the third movable groove, the third movable groove is connected with the second mounting groove, an electric push rod is fixedly installed on one side of the groove wall of the third movable groove, the discharge plate is fixedly installed on the output end of the electric push rod, a threaded barrel is fixedly installed on one end of the conveying pump, and a mounting bottle is installed on the inner wall of the threaded barrel.

[0024] A testing method based on a high-precision testing device for stress and deformation of fasteners comprises the following steps:

[0025] S1, insert the bolts into the first fixing frame from the entrance, insert the resistance strain gauge into the second installation groove, and install the resistance strain gauge on the bolts;

[0026] S2, the first motor starts to drive the fixed plate to rotate to return to the original position, canceling the support for the bolt, and the bolt falls in the conveying trough and falls onto the limit frame;

[0027] S3, the first cylinder is started to drive the rotating frame to move downward, and the rotating frame is stuck at the top of the bolt, and when driving the bolt to move downward, it rotates and transfers the bolt into the first installation tube and the second installation tube;

[0028] S4. The third hydraulic cylinder starts to pull the pulling plate to move and perform stress relaxation deformation test on the bolts.

[0029] The present invention has at least the following beneficial effects:

[0030] (1) This solution can conveniently and quickly install the strain gauge inside the bolt fastener by setting up a pre-installed component, and after the strain gauge is installed, the bolt fastener can be quickly transported to the test component, which can reduce the operation of the staff and make the test more convenient;

[0031] (2) In this solution, the bolt falls from the conveying trough and falls onto the limit frame. The position of the bolt is adjusted through the gap in the middle of the limit frame. At the same time, the second motor is started to drive the adjusting member to rotate. The adjusting member tilts the lower end to block the falling bolt. After the bolt position becomes vertical, the lower end is aligned with the first installation tube and the second installation tube. Then, the first cylinder is started to drive the rotating frame to move downward. The rotating frame is stuck at the top of the bolt. When driving the bolt to move downward, it rotates and transfers the bolt into the first installation tube and the second installation tube, which is convenient for conveying and installing the bolt.

[0032] (3) In this solution, the inner wall of the installation bottle is filled with sealant. After the resistance strain gauge is installed, the electric push rod is started to drive the discharge plate to extend, and the nozzle on the discharge plate sprays the sealant to seal and fix the resistance strain gauge and the bolt connection, which is convenient for sealing the resistance strain gauge into the bolt;

[0033] (4) In this solution, when the driving motor starts to drive the mounting frame to rotate, the support frame rotates along with the support tube, and the support tube is supported by the support frame, so that the rotation of the support tube is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a cross-sectional view of the installation frame of the present invention;

[0037] Figure 3 It is a cross-sectional view of the support tube of the present invention;

[0038] Figure 4 is a cross-sectional view of a second fixing frame of the present invention;

[0039] Figure 5 This is the installation diagram of the fixing column of the present invention;

[0040] Figure 6 is a cross-sectional view of a first mounting frame of the present invention;

[0041] Figure 7 This is the installation diagram of the fixing plate of the present invention;

[0042] Figure 8 This is a diagram of the position limiting frame of the present invention;

[0043] Fig. 9 This is the installation diagram of the pull plate of the present invention;

[0044] Fig.10 This is a connection diagram of the support tube and the mounting frame of the present invention;

[0045] Fig.11 It is an overall cross-sectional view of the second fixing frame of the present invention;

[0046] Fig.12 is a bottom cross-sectional view of the second fixing frame of the present invention;

[0047] Fig.13 For the present invention Figure 2 Enlarged view of point A in the middle.

[0048] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0049] 1. First mounting frame; 101. Connecting cylinder; 102. First cylinder; 103. Rotating motor; 104. Rotating frame; 2. First fixed frame; 201. Fixed slot; 203. Motor mounting slot; 204. First motor; 205. Fixed plate; 206. Conveying slot; 207. Limiting frame; 208. Second mounting frame; 209. Second motor; 210. Adjusting member; 3. Support base; 301. Driving motor; 302. Mounting shaft; 303. Limiting cylinder; 304. First slide slot; 305. Support frame; 306. Rotating slot; 4. Support cylinder; 401. Mounting frame; 402. First mounting slot; 403. First hydraulic cylinder; 404. Drilling rig; 405. Second mounting slot; 406. The second hydraulic cylinder; 407, mounting ring; 408, connecting rod; 409, fixing ring; 410, first spring; 411, support; 5, second fixing frame; 501, first moving groove; 503, second moving groove; 504, second slide groove; 505, third slide groove; 506, second spring; 507, slider; 508, fixing column; 509, pressure plate; 510, mounting shell; 511, resistance strain gauge; 6, mounting bottle; 601, conveying pump; 602, connecting pipe; 603, discharging plate; 604, electric push rod; 7, bracket; 701, third hydraulic cylinder; 702, limit plate; 703, connecting plate; 704, pulling plate; 705, first mounting cylinder; 706, second mounting cylinder. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 13The present invention provides a high-precision testing device based on stress and deformation of fasteners, comprising: a first mounting frame 1, the first mounting frame 1 is placed on the ground; a conveying component, the conveying component is arranged at one end of the first mounting frame 1, and the conveying component fixes and conveys the bolt fasteners through the internal fixing plate 205; a pre-installation component; the pre-installation component is arranged on one side of the first mounting frame 1, and the pre-installation component is located above the conveying component, and the pre-installation component pre-processes the bolt fasteners through the drilling rig 404 and the second fixing frame 5; a testing component, the testing component is arranged inside the first mounting frame 1, and the testing component tests the bolt fasteners through the first installation tube 705 and the second installation tube 706 thereon; by setting the pre-installation component, the strain gauge can be conveniently and quickly installed inside the bolt fastener, and after the strain gauge is installed, the bolt fastener can be quickly conveyed to the testing component, which can reduce the operation of the staff and make the test more convenient.

[0052] In some embodiments, see Figure 2 , Figure 3 The pre-installed components include a support tube 4, a mounting frame 401, a first mounting groove 402, a first hydraulic cylinder 403, a drill bit, a second mounting groove 405, a second hydraulic cylinder 406, a mounting ring 407, a plurality of connecting rods 408, a fixing ring 409, a first spring 410, a support member 411, a second fixing frame 5 and a plurality of fixing columns 508. The mounting frame 401 is fixedly mounted on the support tube 4, and the first mounting groove 402 and the second mounting groove 405 are opened at the top of the mounting frame 401. The first mounting groove 402 and the second mounting groove 405 penetrate the mounting frame 401, the second mounting groove 405 is located at one side of the first mounting groove 402, the first hydraulic cylinder 403 and the second hydraulic cylinder 406 are fixedly installed at the top of the mounting frame 401, the first hydraulic cylinder 403 corresponds to the position of the first mounting groove 402, the drilling rig 404 is fixedly installed at one end of the output end of the first hydraulic cylinder 403, the drilling rig 404 is slidably installed on the groove wall of the first mounting groove 402, and the drill bit is installed at one end of the drilling rig 404. Fig.11 As shown, the position of the second hydraulic cylinder 406 corresponds to the second mounting groove 405, the mounting ring 407 is fixedly mounted on the bottom end of the outer wall of the output end of the second hydraulic cylinder 406, a plurality of connecting rods 408 are fixedly mounted on the bottom end of the mounting ring 407, the support members 411 are respectively fixedly mounted on the bottom ends of the corresponding connecting rods 408, the first spring 410 is fixedly mounted on the bottom end of the mounting ring 407, and one end of the first spring 410 is fixedly mounted on one end of the second fixed frame 5.

[0053] like Fig.12As shown, the second fixed frame 5 is slidably installed on the output end of the second hydraulic cylinder 406, and a plurality of fixed columns 508 are installed inside the second fixed frame 5. A plurality of second slide grooves 504 are provided on the inner wall of the second fixed frame 5, and third slide grooves 505 are provided on both sides of the groove wall of the second slide groove 504. Fixed columns 508 are slidably installed on the groove walls of the plurality of second slide grooves 504. A rubber pad is fixedly installed on one end of the fixed column 508, and sliders 507 are fixedly installed on both sides of the outer wall of the fixed column 508. The slider 507 is slidably installed on the groove wall of the corresponding third slide groove 505. A second spring 506 is fixedly installed on one side of the groove wall of the third slide groove 505, and the slider 507 is fixedly installed on one end of the corresponding second spring 506. A mounting shell 510 is installed on the inner wall of the second fixed frame 5, and a resistance strain gauge 511 is fixedly installed on the bottom end of the mounting shell 510. The mounting shell 510 is located on one side of the fixed column 508.

[0054] In this example, a notch is provided on one side of the second mounting groove 405 for inserting the resistance strain gauge 511, and an inlet is provided on the outer wall of the first fixing frame 2 for inserting the bolt fastener. The bolt is inserted into the first fixing frame 2 from the inlet. At this time, the first motor 204 is started to drive the fixing plate 205 to rotate. The fixing plate 205 is L-shaped. The protruding end of the fixing plate 205 rotates to one end of the bolt to support the bottom of the bolt. The resistance strain gauge 511 is inserted into the second mounting groove 405. At this time, the first spring 410 supports the second fixing frame 5 to be located in the second hydraulic cylinder 40 6, at the lowest end of one end, the support member 411 is located at the fixing column 508, the support fixing column 508 is pressed on the outer wall of the installation shell 510, the installation shell 510 is fixed, the resistance strain gauge 511 is fixed, the first installation slot 402 on the installation frame 401 is located above the conveying slot 206, the first hydraulic cylinder 403 is started to drive the drill rig 404 to move downward, the drill rig 404 drives the drill bit to move downward, the drill rig 404 is started to drive the drill bit to rotate and drill a hole at one end of the bolt, after drilling the hole, the drill rig 404 rises, and the drill bit leaves the bolt and enters the first installation slot 402.

[0055] The driving motor 301 starts to drive the installation frame 401 to rotate so that the second installation slot 405 on the installation frame 401 rotates to above the conveying slot 206, and the second hydraulic cylinder 406 starts to drive the second fixed frame 5 to move downward, driving the resistance strain gauge 511 to move downward, and inserting the resistance strain gauge 511 into the hole processed by the drill bit, and the second fixed frame 5 continues to move downward. The second fixed frame 5 is pressed on one end of the bolt, and the second fixed frame 5 moves upward on the output end of the second hydraulic cylinder 406. The position of the support member 411 in the first movable slot 501 changes, and the fixation of the installation shell 510 is cancelled. The second fixed frame 5 rises, and the installation of the resistance strain gauge 511 is completed.

[0056] In some embodiments, see Figure 4, a plurality of first movable grooves 501 are provided at the top of the second fixed frame 5, the connecting rod 408 and the support member 411 are slidably installed on the groove wall of the corresponding first movable groove 501, the first movable groove 501 is communicated with the corresponding second slide groove 504, one end of the fixed column 508 extends to the inside of the corresponding first movable groove 501, a second movable groove 503 is provided at the top of the second fixed frame 5, a sliding plate is fixedly installed at one end of the output end of the second hydraulic cylinder 406, the sliding plate is slidably installed on the groove wall of the second movable groove 503, a pressing plate 509 is fixedly installed at one end of the inner wall of the second fixed frame 5, a support base 3 is fixedly installed at the bottom end of the outer wall of the first mounting frame 1, a rotating groove 306 and a first slide groove 304 are provided at the top of the support base 3, the rotating groove 306 is annular, the first slide groove 304 is arc-shaped, the first slide groove 304 and the rotating groove 306 are located at the same center of a circle, and the support cylinder 4 is rotatably installed on the groove wall of the rotating groove 306.

[0057] like Fig.10 As shown, a driving motor 301 is fixedly installed on the top of the supporting base 3, and the driving motor 301 is located at the center of the inner wall of the rotating groove 306. A mounting shaft 302 is fixedly installed on the output end of the driving motor 301, and a plurality of limiting cylinders 303 are fixedly installed on the outer wall of the mounting shaft 302. The limiting cylinder 303 is rotatably installed on the inner wall of the supporting cylinder 4, and a supporting frame 305 is fixedly installed on the outer wall of the supporting cylinder 4. One end of the supporting frame 305 is slidably installed on the groove wall of the first sliding groove 304; when the driving motor 301 is started to drive the mounting frame 401 to rotate, the supporting frame 305 rotates with the supporting cylinder 4, and the supporting cylinder 4 is supported by the supporting frame 305, so that the rotation of the supporting cylinder 4 is more stable.

[0058] In this example, the sliding plate is used to connect the output end of the second hydraulic cylinder 406 and the second moving groove 503 to prevent the second hydraulic cylinder 406 from falling off from the second moving groove 503 .

[0059] In some embodiments, see Figure 6 , Figure 7 The conveying assembly includes a first fixed frame 2, a plurality of fixed grooves 201, a plurality of motor mounting grooves 203, a first motor 204, a conveying groove 206, a limiting frame 207, a second mounting frame 208, a second motor 209 and an adjusting member 210. The first fixed frame 2 is fixedly mounted on the top of the first mounting frame 1. The conveying grooves 206 are respectively arranged at the top of the first fixed frame 2 and the first mounting frame 1. The first fixed frame 2 is connected to the conveying grooves 206 on the first mounting frame 1. A plurality of fixed grooves 201 are arranged on both sides of the groove wall of the conveying groove 206. A plurality of motor mounting grooves 203 are arranged on the outer wall of the first fixed frame 2. The first fixed frame 2 is connected to the corresponding fixed grooves 201. The first motor 204 is respectively fixedly mounted on the groove wall of the corresponding motor mounting groove 203. The output end of the first motor 204 extends to the inside of the fixed groove 201. The fixed plate 205 is fixedly mounted on the output end of the first motor 204. The limiting frame 207 is fixedly mounted on the top of the inner wall of the first mounting frame 1.

[0060] like Figure 8 As shown, the position of the limit frame 207 corresponds to the conveying groove 206 on the first mounting frame 1, the second mounting frame 208 is fixedly installed on the top of the inner wall of the first mounting frame 1, the second motor 209 is fixedly installed on one side of the second mounting frame 208, and the output end of the second motor 209 extends to the inside of the second mounting frame 208, the adjusting member 210 is fixedly installed on the output end of the second motor 209, the adjusting member 210 is located on one side of the limit frame 207, and the position of the conveying groove 206 corresponds to the first mounting groove 402 or the second mounting groove 405; after completing the installation of the resistance strain gauge 511, the first motor 204 starts to drive the fixed plate 205 to rotate to return to the original position, canceling the support for the bolt, the bolt falls in the conveying groove 206 and falls on the limit frame 207, and the position of the bolt is adjusted through the gap in the middle of the limit frame 207, and at the same time, the second motor 209 starts to drive the adjusting member 210 to rotate, and the inclined lower end of the adjusting member 210 blocks the falling bolt.

[0061] After the bolt position becomes vertical, the lower end is aligned with the first mounting tube 705 and the second mounting tube 706, and then the first cylinder 102 is started to drive the rotating frame 104 to move downward. The rotating frame 104 is stuck on the top of the bolt, and while driving the bolt to move downward, it rotates and transfers the bolt into the first mounting tube 705 and the second mounting tube 706, which facilitates the transportation and installation of the bolt.

[0062] In some embodiments, see Fig. 9 The test assembly includes two brackets 7, a third hydraulic cylinder 701, a limit plate 702, a connecting plate 703 and a pulling plate 704. The two brackets 7 are fixedly mounted on the bottom end of the outer wall of the first mounting frame 1, and the two brackets 7 are mirror-mounted on the outer wall of the first mounting frame 1. The third hydraulic cylinder 701 is fixedly mounted on one side of the bracket 7, the limit plate 702 is fixedly mounted on one side of the bracket 7, and the limit plates 702 are respectively arranged on the opposite sides of the two brackets 7. The connecting plate 703 is fixedly mounted on the output end of the third hydraulic cylinder 701, and the pulling plate 704 It is fixed on one side of the connecting plate 703 by screws, and a slot is provided at one end of each pulling plate 704. One pulling plate 704 is located at the bottom end of the other pulling plate 704. The first mounting tube 705 is fixed on the slot wall on one pulling plate 704 by screws, and the second mounting tube 706 is fixed on the slot wall on the pulling plate 704 on the other side by screws. A threaded groove is provided at one end of the first mounting tube 705 and the second mounting tube 706, and the threaded grooves on the first mounting tube 705 and the second mounting tube 706 are connected.

[0063] A connecting tube 101 is fixedly installed on the top of the first mounting frame 1, and a first cylinder 102 is fixedly installed on the top of the connecting tube 101. The output end of the first cylinder 102 extends into the interior of the connecting tube 101, and a rotating motor 103 is fixedly installed on the output end of the first cylinder 102. A rotating frame 104 is fixedly installed on the output end of the rotating motor 103 by screws; in this example, the shape of the inner wall of the rotating frame 104 can be replaced according to the shape of the top of the bolt; in this example, the specifications of the first mounting tube 705 and the second mounting tube 706 can be replaced according to the size and number of threads of the bolt. After the bolts are installed on the first mounting tube 705 and the second mounting tube 706, the pulling plate 704 is started by the third hydraulic cylinder 701 to move, and a stress relaxation deformation test is performed on the bolts.

[0064] In this example, the resistance strain gauge 511 is installed on the bolt. The slight deformation of the surface of the component after being loaded will cause the sensitive grid of the strain gauge to deform accordingly, and the resistance of the strain gauge will change, which can show the stress relaxation deformation of the bolt.

[0065] For further information, please refer again to Figure 2 , Fig.13 As shown, a third movable groove is provided on one side of the installation frame 401, a delivery pump 601 is fixedly installed on the groove wall of the third movable groove, a connecting pipe 602 is fixedly installed on one end of the delivery pump 601, a discharge plate 603 is fixedly installed on one end of the connecting pipe 602, a discharge groove is provided on one end of the discharge plate 603, the discharge groove passes through the discharge plate 603, the discharge groove is connected with the connecting pipe 602, a nozzle is fixedly installed on one end of the groove wall of the discharge groove, the discharge plate 603 is slidably installed on the groove wall of the third movable groove, the third movable groove is connected with the second installation groove 405, and the third movable groove is connected with the second installation groove 405. An electric push rod 604 is fixedly installed on one side of the moving groove wall, and a discharge plate 603 is fixedly installed on the output end of the electric push rod 604. A threaded barrel is fixedly installed on one end of the delivery pump 601, and a mounting bottle 6 is installed on the inner wall of the threaded barrel; the inner wall of the mounting bottle 6 is filled with sealant. After the resistance strain gauge 511 is installed, the electric push rod 604 is started to drive the discharge plate 603 to extend, and the nozzle on the discharge plate 603 sprays sealant to seal and fix the resistance strain gauge 511 and the bolt connection, so as to facilitate the sealing of the resistance strain gauge 511 into the bolt.

[0066] The working process and principle of the present invention are as follows: when performing stress relaxation deformation test on bolt fasteners, the bolts are inserted into the first fixed frame 2 from the entrance. At this time, the first motor 204 is started to drive the fixed plate 205 to rotate. The extended end of the fixed plate 205 rotates to one end of the bolt to support the bottom of the bolt. The resistance strain gauge 511 is inserted into the second installation groove 405. At this time, the first spring 410 supports the second fixed frame 5 to be located at the lowermost end of one end of the second hydraulic cylinder 406. At this time, the support member 411 is located at the fixed column 508, and the support fixed column 508 is pressed on the installation shell 5 10 outer wall, the mounting shell 510 is fixed, the resistance strain gauge 511 is fixed, the first mounting slot 402 on the mounting frame 401 is located above the conveying slot 206, the first hydraulic cylinder 403 is started to drive the drill rig 404 to move downward, the drill rig 404 drives the drill bit to move downward, the drill rig 404 is started to drive the drill bit to rotate and drill a hole at one end of the bolt, after drilling the hole, the drill rig 404 rises, the drill bit leaves the bolt and enters the first mounting slot 402, the drive motor 301 is started to drive the mounting frame 401 to rotate so that the second mounting slot 405 on the mounting frame 401 rotates to above the conveying slot 206.

[0067] The second hydraulic cylinder 406 is started to drive the second fixed frame 5 to move downward, drive the resistance strain gauge 511 to move downward, insert the resistance strain gauge 511 into the hole processed by the drill bit, and the second fixed frame 5 continues to move downward. The second fixed frame 5 is pressed on one end of the bolt. The second fixed frame 5 moves upward on the output end of the second hydraulic cylinder 406. The position of the support member 411 in the first moving groove 501 changes, and the fixation of the mounting shell 510 is cancelled. The second fixed frame 5 rises, and the installation of the resistance strain gauge 511 is completed. After the converter 511 is installed, the first motor 204 is started to drive the fixed plate 205 to rotate back to its original position, canceling the support for the bolts. The bolts fall in the conveying trough 206 and fall onto the limit frame 207. Then the first cylinder 102 is started to drive the rotating frame 104 to move downward. The rotating frame 104 is stuck at the top of the bolt, driving the bolt to move downward while rotating to transfer the bolt into the first installation cylinder 705 and the second installation cylinder 706. The pulling plate 704 is started by the third hydraulic cylinder 701 to move, and the stress relaxation deformation test is performed on the bolts.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision testing device based on stress and deformation of fasteners, It is characterized in that include: A first mounting frame (1), the first mounting frame (1) being placed on the ground; A conveying assembly, the conveying assembly being arranged at one end of the first mounting frame (1), the conveying assembly fixing and conveying the bolt fasteners via an internal fixing plate (205); A pre-installation component, the pre-installation component is arranged on the other side of the first installation frame (1), and the pre-installation component is located above the conveying component, and the pre-installation component pre-processes the bolt fasteners through the drilling machine (404) and the second fixing frame (5); The pre-installed assembly comprises a support tube (4), a mounting frame (401), a first mounting groove (402), a first hydraulic cylinder (403), a drill bit, a second mounting groove (405), a second hydraulic cylinder (406), and a mounting ring (407); the mounting frame (401) is fixedly mounted on the support tube (4); the first mounting groove (402) and the second mounting groove (405) are independently penetrated in the vertical direction and opened at the top of the mounting frame (401); the first hydraulic cylinder (403) and the second hydraulic cylinder (406) are fixedly mounted on the top of the mounting frame (401); the first hydraulic cylinder (403) and the first mounting groove (402) are respectively located in the first mounting groove (402) and the second mounting groove (405) and form a movable penetration; The drilling machine (404) is fixedly mounted on the bottom output end of the first hydraulic cylinder (403) and is movably connected along the extension direction of the inner groove wall of the first mounting groove (402); the mounting ring (407) is fixedly mounted on the bottom output end of the second hydraulic cylinder (406) and is movably connected along the extension direction of the inner groove wall of the second mounting groove (405), so that the outer diameter of the mounting ring (407) fits the inner diameter of the second mounting groove (405). A test assembly, the test assembly being arranged inside the first mounting frame (1), the test assembly testing the bolt fastener via a first mounting tube (705) and a second mounting tube (706) thereon; The pre-installed assembly further comprises a plurality of connecting rods (408), a fixing ring (409), a first spring (410), a support member (411), and a second fixing frame (5); the plurality of connecting rods (408) are fixedly mounted on the bottom end of the mounting ring (407); the support members (411) are respectively fixedly mounted on the bottom ends of the corresponding connecting rods (408); the fixing ring (409) is fixedly mounted on the bottom end of the outer wall of the output end of the second hydraulic cylinder (406); one end of the first spring (410) is fixedly mounted on the bottom end of the fixing ring (409); the other end of the first spring (410) is fixedly mounted on one end of the second fixing frame (5); and the second fixing frame (5) is slidably mounted on the output end of the second hydraulic cylinder (406); The inner wall of the second fixed frame (5) is provided with a plurality of second slide grooves (504), and the second slide groove (504) has third slide grooves (505) on both sides of the groove wall, and the opening diameter of the front end of the third slide groove (505) is smaller than the opening diameter of the rear end, and the groove walls of the plurality of second slide grooves (504) are slidably installed with fixed columns (508), and the ends of the fixed columns (508) are fixedly installed with rubber pads, and the slider (507) is slidably installed on the groove wall corresponding to the third slide groove (505), and the groove wall of the third slide groove (505) is fixedly installed with a second spring (506), and the second spring (506) forms an extrusion on the slider (507) along the extension direction of the third slide groove (505), and at the same time, the slider (507) forms a clamping on the fixed column (508) passing through the middle; An installation shell (510) is installed on the inner wall of the second fixing frame (5), a resistance strain gauge (511) is fixedly installed on the bottom end of the installation shell (510), and the installation shell (510) is located on one side of the fixing column (508); A plurality of first movable grooves (501) are provided at the top of the second fixed frame (5); the connecting rod (408) and the supporting member (411) are slidably mounted on the inner side of the groove wall corresponding to the first movable groove (501); the first movable groove (501) is connected to the corresponding second sliding groove (504); one end of the fixed column (508) extends into the corresponding first movable groove (501); a second movable groove (503) is provided at the top of the second fixed frame (5); a sliding plate is fixedly mounted at one end of the output end of the second hydraulic cylinder (406); the sliding plate is slidably mounted on the groove wall of the second movable groove (503); and a pressing plate (509) is fixedly mounted at one end of the inner wall of the second fixed frame (5); A support base (3) is fixedly mounted on the bottom end of the outer wall of the first mounting frame (1); a rotation groove (306) and a first slide groove (304) are provided on the top end of the support base (3); the rotation groove (306) is annular; the first slide groove (304) is arc-shaped; the first slide groove (304) and the rotation groove (306) are located at the same center of a circle; the support cylinder (4) is rotatably mounted on the groove wall of the rotation groove (306); a drive motor (304) is fixedly mounted on the top end of the support base (3); 1), the driving motor (301) is located at the center of the inner wall of the rotating groove (306), the output end of the driving motor (301) is fixedly mounted with a mounting shaft (302), the outer wall of the mounting shaft (302) is fixedly mounted with a plurality of limiting cylinders (303), the limiting cylinders (303) are rotatably mounted on the inner wall of the supporting cylinder (4), the outer wall of the supporting cylinder (4) is fixedly mounted with a supporting frame (305), and one end of the supporting frame (305) is slidably mounted on the groove wall of the first sliding groove (304); The conveying assembly comprises a first fixed frame (2), a plurality of fixed slots (201), a plurality of motor mounting slots (203), a first motor (204), a conveying slot (206), a limiting frame (207), a second mounting frame (208), a second motor (209) and an adjusting member (210), wherein the first fixed frame (2) is fixedly mounted on the top of the first mounting frame (1), the first fixed frame (2) and the first mounting frame (1) are connected via the conveying slot (206), a plurality of the fixed slots (201) are arranged on both sides of the slot wall of the conveying slot (206), a plurality of the motor mounting slots (203) are arranged on the outer wall of the first fixed frame (2), the first fixed frame (2) is connected to the corresponding fixed slots (201), the first motors (204) are respectively fixedly mounted on the slot walls of the corresponding motor mounting slots (203), the output end of the first motor (204) extends into the interior of the fixed slot (201), and the fixed plate (205) is fixedly mounted on the output end of the first motor (204); The limiting frame (207) is fixedly mounted on the top of the inner wall of the first mounting frame (1), and the position of the limiting frame (207) corresponds to the conveying groove (206) on the first mounting frame (1); the second mounting frame (208) is fixedly mounted on the top of the inner wall of the first mounting frame (1); the second motor (209) is fixedly mounted on one side of the second mounting frame (208), and the output end of the second motor (209) extends into the interior of the second mounting frame (208); the adjusting member (210) is fixedly mounted on the output end of the second motor (209), and the adjusting member (210) is located on one side of the limiting frame (207); and the position of the conveying groove (206) corresponds to the first mounting groove (402) or the second mounting groove (405).

2. A high-precision testing device based on stress and deformation of fasteners according to claim 1, Features: The test assembly comprises two brackets (7), a third hydraulic cylinder (701), a limit plate (702), a connecting plate (703) and a pulling plate (704), wherein the two brackets (7) are fixedly mounted on the bottom end of the outer wall of the first mounting frame (1), and the two brackets (7) are mirror-mounted on the outer wall of the first mounting frame (1), the third hydraulic cylinder (701) is fixedly mounted on one side of the bracket (7), the limit plate (702) is fixedly mounted on one side of the bracket (7), the limit plates (702) are respectively arranged on opposite sides of the two brackets (7), the connecting plate (703) is fixedly mounted on the output end of the third hydraulic cylinder (701), and the pulling plate (704) is fixedly mounted on the output end of the third hydraulic cylinder (701). The movable plate (704) is fixedly mounted on one side of the connecting plate (703) by means of screws, a notch is provided at one end of each of the pulling plates (704), one of the pulling plates (704) is located at the bottom end of the other pulling plate (704), the first mounting tube (705) is fixedly mounted on the notch wall on one of the pulling plates (704) by means of screws, the second mounting tube (706) is fixedly mounted on the notch wall on the other side of the pulling plate (704) by means of screws, a threaded groove is provided at one end of the first mounting tube (705) and the second mounting tube (706), and the threaded grooves on the first mounting tube (705) and the second mounting tube (706) are connected.

3. A high-precision testing device based on stress and deformation of fasteners according to claim 1, Features: A connecting tube (101) is fixedly mounted on the top of the first mounting frame (1), a first cylinder (102) is fixedly mounted on the top of the connecting tube (101), an output end of the first cylinder (102) extends into the interior of the connecting tube (101), a rotating motor (103) is fixedly mounted on the output end of the first cylinder (102), and a rotating frame (104) is fixedly mounted on the output end of the rotating motor (103) via screws.

4. A high-precision testing device based on stress and deformation of fasteners according to claim 1, Features: A third movable groove is provided on one side of the installation frame (401), a delivery pump (601) is fixedly installed on the groove wall of the third movable groove, a connecting pipe (602) is fixedly installed on one end of the delivery pump (601), a discharge plate (603) is fixedly installed on one end of the connection pipe (602), a discharge groove is provided on one end of the discharge plate (603), the discharge groove passes through the discharge plate (603), the discharge groove is communicated with the connecting pipe (602), a nozzle is fixedly installed on one end of the groove wall of the discharge groove, the discharge plate (603) is slidably installed on the groove wall of the third movable groove, the third movable groove is communicated with the second installation groove (405), an electric push rod (604) is fixedly installed on one side of the groove wall of the third movable groove, the discharge plate (603) is fixedly installed on the output end of the electric push rod (604), a threaded barrel is fixedly installed on one end of the delivery pump (601), and a mounting bottle (6) is installed on the inner wall of the threaded barrel.

5. A testing method based on a high-precision testing device for stress and deformation of fasteners according to any one of claims 1 to 4, It is characterized in that The following steps are involved: S1, inserting a bolt into the first fixing frame (2) from the entrance, inserting the resistance strain gauge (511) into the second installation groove (405), and installing the resistance strain gauge (511) onto the bolt; S2, the first motor (204) is started to drive the fixing plate (205) to rotate until it returns to its original position, thereby canceling the support for the bolt, and the bolt falls in the conveying trough (206) and onto the limiting frame (207); S3, the first cylinder (102) is started to drive the rotating frame (104) to move downward, and the rotating frame (104) is stuck on the top of the bolt, driving the bolt to move downward while rotating to transfer the bolt into the first installation tube (705) and the second installation tube (706); S4. The third hydraulic cylinder (701) starts to pull the pulling plate (704) to perform a stress relaxation deformation test on the bolt.

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