CN115963007B - Force measuring bolt calibration test device - Google Patents
Force measuring bolt calibration test device Download PDFInfo
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- CN115963007B CN115963007B CN202310092830.0A CN202310092830A CN115963007B CN 115963007 B CN115963007 B CN 115963007B CN 202310092830 A CN202310092830 A CN 202310092830A CN 115963007 B CN115963007 B CN 115963007B
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Abstract
The invention discloses a calibration test device for a force measuring bolt, and relates to the technical field of detection of bolt stress conditions in the manufacturing field of large-scale mechanical equipment such as railway vehicle bogies. Comprising the following steps: the device comprises a first mounting seat of a tested bolt, a second mounting seat of the tested bolt, a side matching connection structure of the first mounting seat of the tested bolt, a side matching connection structure of the second mounting seat of the tested bolt, a connecting seat for a first tensile test, a connecting seat for a second tensile test and a connecting seat for a torque test. When a tensile test of the tested bolt is carried out, the side matched connection structure of the first mounting seat of the tested bolt and the side matched connection structure of the second mounting seat of the tested bolt apply tensile force to the first mounting seat of the tested bolt and the tested bolt under the action of tensile equipment; when the torque test of the tested bolt is carried out, the second mounting seat side matched connection structure of the tested bolt is fixed on the supporting base through the connection seat for the torque test.
Description
Technical Field
The invention relates to the technical field of detection of bolt stress conditions in the field of manufacturing of large-scale mechanical equipment such as railway vehicle bogies and the like, in particular to a calibration test device for a force measuring bolt.
Background
In the field of manufacturing large-scale mechanical equipment such as railway vehicle bogies, stress detection is required for some critical bolts, namely, the strain of the bolts is measured under the actual use condition or the simulated actual use condition of the bolts, and then the stress of the bolts is calculated through strain gauges, so that the mechanical properties such as fatigue strength of the bolts are evaluated. Because the strain of the bolt is very tiny and the mechanical properties of the bolts with different materials and specifications are different, in order to improve the detection accuracy, a calibration test of the strain and the stress of the bolt can be adopted before the detection. The basic principle of the calibration test is as follows: the corresponding relation between the strain and the stress is found out by giving a set force to the tested bolt and simultaneously measuring the strain generated by the tested bolt under the force (the strain measuring technology is existing). Then, the strain of the bolt is measured under the actual use condition of the bolt or the simulated actual use condition, and then the actual stress can be calculated according to the measured value of the strain and the corresponding relation between the calibrated strain and the stress. There is no tool for the calibration test, which can make the strain of the tested bolt under different stress states (such as tensile state and torsion state) be measured.
Disclosure of Invention
The invention aims to provide a calibration test device for a force measuring bolt, which is used for enabling the measured bolt to be in a set stress state in any one of a tensile test and a torque test of the measured bolt, and the strain of the measured bolt can be measured in the stress state.
The device is used for enabling the tested bolt to be in a set stress state in any one of a tensile test and a torque test of the tested bolt, and the strain of the tested bolt can be measured in the stress state, so that the corresponding relation between the strain and the stress state can be calibrated; comprising the following steps: the first mounting seat of the tested bolt is provided with a section of matched hole of the tested bolt, a first side surface of the first mounting seat of the tested bolt where the insertion end of the section of matched hole of the tested bolt is positioned, and a second side surface of the first mounting seat of the tested bolt where the extension end of the section of matched hole of the tested bolt is positioned; the second mounting seat of the tested bolt is provided with a second section of matching hole of the tested bolt, a first side surface of the second mounting seat of the tested bolt, where the insertion end of the second section of matching hole of the tested bolt is positioned, and a second side surface of the second mounting seat of the tested bolt, which is positioned on the opposite side of the first side surface of the second mounting seat of the tested bolt; the first mounting seat side matching connection structure of the tested bolt is arranged on the first side surface of the first mounting seat of the tested bolt and is used for being matched and connected with the matching connection structure on the connecting seat for the first tensile test; the second installation seat side matching connection structure of the tested bolt is arranged on the second side surface of the second installation seat of the tested bolt and is used for being matched and connected with the matching connection structure on any one of the second connection seat for the tensile test and the connection seat for the torque test; the first connecting seat for the tensile test is used for being matched and connected with the matched and connected structure at the first installation seat side of the tested bolt through the matched and connected structure positioned on the connecting seat for the tensile test; the second connecting seat for the tensile test is used for being matched and connected with the second installation seat side matching and connecting structure of the tested bolt through the matching and connecting structure positioned on the second connecting seat for the tensile test; the connecting seat for the torque test is used for being in matched connection with the matched connecting structure on the second installation seat side of the tested bolt through the matched connecting structure on the connecting seat for the torque test; when any one of a tensile test and a torque test of the tested bolt is carried out, a stud of the tested bolt passes through a first section of matching hole of the tested bolt and is in threaded fit connection with a second section of matching hole of the tested bolt, so that the second side surface of the first mounting seat of the tested bolt is attached and locked with the first side surface of the second mounting seat of the tested bolt; when the tensile test of the tested bolt is carried out, the side matched connection structure of the first mounting seat of the tested bolt and the side matched connection structure of the second mounting seat of the tested bolt are respectively connected to a tensile device through the connecting seat for the first tensile test and the connecting seat for the second tensile test, and the tensile force is applied to the stress center lines of the first mounting seat of the tested bolt and the second mounting seat of the tested bolt under the action of the tensile device and the central axis of the tested bolt; when the torque test of the tested bolt is carried out, a reserved space which can be sleeved into the torque wrench at the head of the tested bolt is reserved on the side matched connection structure of the first mounting seat of the tested bolt, and the side matched connection structure of the second mounting seat of the tested bolt is fixed on the supporting base through the connecting seat for the torque test.
According to the embodiment of the invention, when the stud of the detected bolt passes through the first section of the matching hole of the detected bolt and is in threaded matching connection with the second section of the matching hole of the detected bolt, the central axis direction of the detected bolt is in the Z-axis direction, a straight line direction perpendicular to the Z-axis direction on the joint surface between the second side surface of the detected bolt and the first side surface of the detected bolt is in the X-axis direction, a straight line direction perpendicular to the Z-axis direction and the X-axis direction on the joint surface between the second side surface of the detected bolt and the first side surface of the detected bolt is in the Y-axis direction, the first T-shaped head is disconnected at the head of the detected bolt to form the reserved space, the second T-shaped head of the detected bolt is in the second T-shaped head extending along the Y-axis direction, and the first T-shaped head of the detected bolt is in the first T-shaped head of the detected bolt is disconnected at the head of the detected bolt, and the first T-shaped head of the detected bolt is connected with the first T-shaped head of the detected bolt is connected by the T-shaped head of the detected bolt, and the first T-shaped head of the detected bolt is connected by the T-shaped head of the detected bolt.
According to the embodiment of the invention, the first connecting seat for the tensile test and/or the second connecting seat for the tensile test are/is provided with a neck and two shoulders symmetrically arranged on two sides of the neck along the Y-axis direction, the neck is used for being connected with the tensile equipment, and the T-shaped groove is formed on the two shoulders symmetrically arranged on two sides of the neck along the Y-axis direction.
According to the embodiment of the invention, the connecting seat for the torque test is provided with a connecting seat body for the torque test and a support seat arranged at the bottom of the connecting seat body for the torque test, connecting holes are distributed on the support seat and are connected with corresponding connecting holes on the supporting base through fastening bolts, and the T-shaped groove is formed in the connecting seat body for the torque test.
According to the embodiment of the invention, a first positioning structure for positioning the first mounting seat of the bolt to be tested and the first connecting seat for the tensile test in the Y-axis direction is arranged between the first mounting seat of the bolt to be tested and the first connecting seat for the tensile test; and a second positioning structure for positioning the second mounting seat of the tested bolt and the connecting seat for the second tensile test in the Y-axis direction is arranged between the second mounting seat of the tested bolt and the connecting seat for the second tensile test.
According to the embodiment of the invention, the Y-axis direction is a vertical direction; the first positioning structure comprises a first positioning plate which is connected between the first mounting seat of the tested bolt and the connecting seat for the first tensile test and is simultaneously attached to the upper end surface of the first mounting seat of the tested bolt and the upper end surface of the connecting seat for the first tensile test; the second positioning structure comprises a second positioning plate which is connected between the second installation seat of the tested bolt and the connecting seat for the second tensile test and is simultaneously attached to the upper end face of the second installation seat of the tested bolt and the upper end face of the connecting seat for the second tensile test.
According to the embodiment of the invention, the first section of the bolt to be tested and the second section of the bolt to be tested are respectively provided with more than two matching holes and are respectively arranged on the first mounting seat of the bolt to be tested and the second mounting seat of the bolt to be tested at intervals along the Y-axis direction.
According to the embodiment of the invention, the first section of the matched hole of the tested bolt, the second section of the matched hole of the tested bolt and the first section of the matched hole of the tested bolt, which are matched with other pairs, are respectively used for adapting to the tested bolt without specification.
According to the embodiment of the invention, the first mounting seat of the detected bolt and the second mounting seat of the detected bolt are rectangular bodies, the length direction of the rectangular bodies is the Y-axis direction, the width direction of the rectangular bodies is the X-axis direction, and the thickness direction of the rectangular bodies is the Z-axis direction.
According to the embodiment of the invention, the thickness of the rectangular body of the second mounting seat of the tested bolt is larger than that of the rectangular body of the first mounting seat of the tested bolt.
According to the calibration test device for the force measuring bolt, the tested bolt can be in a set stress state in any one of a tensile test and a torque test of the tested bolt, and the strain of the tested bolt can be measured in the stress state, so that the calibration of the corresponding relation between the strain and the stress state can be realized. When the tested bolt is in a tensile test, the stress state of the tested bolt is a tensile state, the corresponding tensile stress can be obtained from tensile equipment, and the strain of the tested bolt can be obtained through a strain detection sensor arranged on the tested bolt, so that the calibration of the strain and the tensile stress can be realized; when the torque test is performed on the tested bolt, the stress state of the tested bolt is a torsion state, the corresponding torsion stress can be read from the torsion wrench, and the strain of the tested bolt can be obtained through the strain detection sensor arranged on the tested bolt, so that the calibration of the strain and the torsion stress is realized.
The invention is further described below with reference to the drawings and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the invention and, together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a calibration test device for a force measuring bolt according to an embodiment of the present invention when a tensile test is performed on a measured bolt.
Fig. 2 is an exploded view of a calibration test device for a load cell in accordance with an embodiment of the present invention.
Fig. 3 is a schematic diagram of a calibration test device for a force measuring bolt according to an embodiment of the present invention when a torque test is performed on a measured bolt.
Marked in the figure as: the first mounting seat 1 of the tested bolt, the first section of the matching hole 11 of the tested bolt, the first side 12 of the first mounting seat of the tested bolt, the second side 13 of the first mounting seat of the tested bolt, the second mounting seat 2 of the tested bolt, the second section of the matching hole 21 of the tested bolt, the first side 22 of the second mounting seat of the tested bolt, the second side 23 of the second mounting seat of the tested bolt, the first mounting seat side matching connection structure 3 of the tested bolt, the reserved space 31, the second mounting seat side matching connection structure 4 of the tested bolt, the first connection seat 5 for the tensile test, the second connection seat 6 for the tensile test, the connection seat 7 for the torque test, the connection seat body 71, the support 72, the connection hole 721, the tested bolt 8, the neck 91, the shoulder 92, the first positioning plate 101 and the second positioning plate 102.
Description of the embodiments
The present invention will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be noted in particular that:
the technical solutions and technical features provided in the respective sections including the following description may be combined with each other without conflict. Furthermore, the described embodiments, features, and combinations of features can be combined as desired and claimed in any given application.
The embodiments of the invention that are referred to in the following description are typically only a few, but not all, embodiments, based on which all other embodiments, as would be apparent to one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the patent protection.
With respect to terms and units in this specification: the terms "comprising," "including," "having," and any variations thereof, in this specification and the corresponding claims and related parts, are intended to cover a non-exclusive inclusion. Furthermore, other related terms and units may be reasonably construed based on the description provided herein.
As shown in fig. 1-3, a calibration test device for a force measuring bolt is used for enabling the measured bolt to be in a set stress state in any one of a tensile test and a torque test of the measured bolt, and the strain of the measured bolt is measured under the stress state, so that the calibration of the relation between the strain and the stress state can be realized.
The force measuring bolt calibration test device specifically comprises: the device comprises a first mounting seat 1 of a tested bolt, a second mounting seat 2 of the tested bolt, a side matching connection structure 3 of the first mounting seat of the tested bolt, a side matching connection structure 4 of the second mounting seat of the tested bolt, a first connecting seat 5 for a tensile test, a second connecting seat 6 for the tensile test and a connecting seat 7 for a torque test.
The first mounting seat 1 for the tested bolt is provided with a first section of matching hole 11 for the tested bolt, a first side 12 for the first mounting seat for the tested bolt, where the insertion end of the first section of matching hole 11 for the tested bolt is located, and a second side 13 for the first mounting seat for the tested bolt, where the extension end of the first section of matching hole 11 for the tested bolt is located.
The second mounting seat 2 for the tested bolt is provided with a second section of matching hole 21 for the tested bolt, a first side 22 of the second mounting seat for the tested bolt, where the insertion end of the second section of matching hole 21 for the tested bolt is located, and a second side 23 of the second mounting seat for the tested bolt, which is located on the opposite side of the first side 22 of the second mounting seat for the tested bolt.
The first mounting seat side matching connection structure 3 of the tested bolt is arranged on the first side 12 of the first mounting seat of the tested bolt and is used for matching connection with the matching connection structure on the first connecting seat 5 for the tensile test.
The second mounting seat side matching connection structure 4 of the tested bolt is arranged on the second side surface 23 of the second mounting seat of the tested bolt and is used for matching connection with the matching connection structure on any one of the second connecting seat 6 for the tensile test and the connecting seat 7 for the torque test.
The first connecting seat 5 for tensile test is used for being connected with the first mounting seat side matching connection structure 3 of the tested bolt in a matching way through the matching connection structure positioned on the first connecting seat 5 for tensile test.
The second connection seat 6 for tensile test is used for being in fit connection with the second installation seat side fit connection structure 4 of the tested bolt through the fit connection structure positioned on the second connection seat 6 for tensile test.
The connecting seat 7 for torque test is used for being matched and connected with the matched and connected structure 4 on the second installation seat side of the tested bolt through the matched and connected structure positioned on the connecting seat 7 for torque test.
When any one of a tensile test and a torque test of the tested bolt is carried out, the stud of the tested bolt 8 passes through the first section of the tested bolt matching hole 11 and is in threaded fit connection with the second section of the tested bolt matching hole 21, so that the second side surface 13 of the first mounting seat of the tested bolt is attached and locked with the first side surface 22 of the second mounting seat of the tested bolt.
When the tensile test of the tested bolt is performed, the tested bolt first mounting seat side matching connection structure 3 and the tested bolt second mounting seat side matching connection structure 4 are respectively connected to a tensile device (not shown in the figure) through the first tensile test connection seat 5 and the second tensile test connection seat 6, and are applied to the tensile force of the superposition of the stress center lines of the tested bolt first mounting seat 1 and the tested bolt second mounting seat 2 and the central axis of the tested bolt 8 under the action of the tensile device.
When the torque test of the tested bolt is performed, a reserved space 31 which can be sleeved into a torque wrench at the head of the tested bolt 8 is formed in the tested bolt first mounting seat side matching connection structure 3, and the tested bolt second mounting seat side matching connection structure 4 is fixed on a supporting base (not shown in the figure) through the connecting seat 7 for the torque test.
The force measuring bolt calibration test device can enable the tested bolt 8 to be in a set stress state in any one of a tensile test and a torque test of the tested bolt 8, and the strain of the tested bolt 8 can be measured in the stress state, so that the calibration of the relation between the strain and the stress state can be realized. When the tested bolt 8 is in a tensile test, the stress state of the tested bolt 8 is a tensile state, the corresponding tensile stress can be obtained from tensile equipment, and the strain of the tested bolt 8 can be obtained through a strain detection sensor arranged on the tested bolt 8, so that the calibration of the strain and the tensile stress can be realized; when the torque test is performed on the detected bolt 8, the stress state of the detected bolt 8 is a torsion state, the corresponding torsion stress can be read from the torque wrench, and the strain of the detected bolt 8 can be obtained through a strain detection sensor arranged on the detected bolt 8, so that the calibration of the strain and the torsion stress can be realized.
In an alternative embodiment, as shown in fig. 1-3, when the stud of the detected bolt 8 passes through the first section of matching hole 11 of the detected bolt and the second section of matching hole 21 of the detected bolt in a threaded fit connection, the central axis direction of the detected bolt 8 is the Z axis direction, a straight line direction perpendicular to the Z axis direction on the joint surface between the second side 13 of the detected bolt and the first side 22 of the detected bolt is the X axis direction, a straight line direction perpendicular to the Z axis direction on the joint surface between the second side 13 of the detected bolt and the first side 22 of the detected bolt is the Y axis direction, the first T-shaped head is reserved at the head of the detected bolt 8 to form the space 31, and the second T-shaped head of the detected bolt is a T-shaped head connecting structure extending along the Y axis direction and the first T-shaped connecting structure for connecting the second side 4 of the detected bolt is a T-shaped connecting structure for connecting the first T-shaped seat with the first connecting seat 5.
Because the first mounting seat side matching connection structure 3 of the tested bolt comprises a first T-shaped head extending along the Y-axis direction, the first T-shaped head is disconnected at the head part of the tested bolt 8 to form the reserved space 31, the second mounting seat side matching connection structure 4 of the tested bolt comprises a second T-shaped head extending along the Y-axis direction, and the matching connection structure of the first connecting seat 5 for the tensile test, the matching connection structure of the second connecting seat 6 for the tensile test and the matching connection structure of the connecting seat 7 for the torque test all adopt T-shaped grooves, so that the first T-shaped head is used for being connected with the T-shaped groove on the first connecting seat 5 for the tensile test, and the second T-shaped head is used for being connected with the T-shaped groove on the second connecting seat 6 for the tensile test or the T-shaped groove on the connecting seat 7 for the torque test. Here, the fit connection of T type head and T type groove not only has the advantage of easy dismounting, simultaneously, can make two parts that fit connection together be spacing on each degree of freedom except Y axle direction respectively after T type head and T type groove fit connection, no matter in the tensile test of test bolt 8 or torque test, all can avoid the test bolt 8 to bear the independent force of test as far as possible, ensures the accuracy of the demarcation of meeting an emergency and stress.
On this basis, as shown in fig. 1-2, in an alternative embodiment, the first connection seat 5 for tensile test and/or the second connection seat 6 for tensile test each have a neck portion 91 and two shoulder portions 92 symmetrically disposed on two sides of the neck portion 91 along the Y-axis direction, the neck portion 91 is used for connecting with the stretching device, and the T-shaped groove is formed on the two shoulder portions 92 symmetrically disposed on two sides of the neck portion along the Y-axis direction. It is easy to see that, when the first tensile test connection seat 5 and/or the second tensile test connection seat 6 each adopt the above-mentioned structure, when the tensile test of the tested bolt is performed, the tensile force applied by the first tensile test connection seat 5 to the stress center line of the tested bolt first mounting seat 1 and the central axis of the tested bolt 8, and the tensile force applied by the second tensile test connection seat 6 to the stress center line of the tested bolt second mounting seat 2 and the central axis of the tested bolt 8 can be further avoided, so that the tested bolt 8 is further prevented from being subjected to the force irrelevant to the tensile test, and the accuracy of the calibration of the strain and the stress is ensured. The neck 91 may be connected to the stretching apparatus in a number of ways, for example by a flange connection.
In an alternative embodiment, as shown in fig. 3, the torque testing connector 7 has a torque testing connector body 71 and a support 72 disposed at the bottom of the torque testing connector body 71, where the support 72 is distributed with connection holes 721, the connection holes 721 are used for connecting with corresponding connection holes on the support base through fastening bolts, and the T-shaped slot is opened on the torque testing connector body 71.
In addition, as shown in fig. 1-2, in an alternative embodiment, a first positioning structure for positioning the first mounting seat 1 of the tested bolt and the first connecting seat 5 for tensile test in the Y-axis direction is provided between the first mounting seat 1 of the tested bolt and the first connecting seat 5 for tensile test; a second positioning structure for positioning the second mounting seat 2 of the bolt to be tested and the second connecting seat 6 for the tensile test in the Y-axis direction is arranged between the second mounting seat 2 of the bolt to be tested and the second connecting seat 6 for the tensile test. Thereby, the freedom in the Y-axis direction of the two members that are connected together by the T-head and T-slot fitting is also limited.
In an alternative specific embodiment, the Y axis direction is a vertical direction, and the first positioning structure includes a first positioning plate 101 connected between the first mounting seat 1 of the tested bolt and the first connecting seat 5 for tensile test and simultaneously attached to an upper end surface of the first mounting seat 1 of the tested bolt and an upper end surface of the first connecting seat 5 for tensile test; the second positioning structure comprises a second positioning plate 102 connected between the second mounting seat 2 of the tested bolt and the connecting seat 6 for the second tensile test and simultaneously attached to the upper end surface of the second mounting seat 2 of the tested bolt and the upper end surface of the connecting seat 6 for the second tensile test. The first positioning plate 101 and the second positioning plate 102 can bear the gravity of the first mounting seat 1 of the tested bolt and the second mounting seat 2 of the tested bolt, so that the tested bolt 8 is prevented from bearing shearing force, and the calibration accuracy of strain and stress is ensured.
In addition, as shown in fig. 1-2, in an alternative embodiment, the first section of the mating hole 11 of the tested bolt and the second section of the mating hole 21 of the tested bolt are two or more and are respectively disposed on the first mounting seat of the tested bolt and the second mounting seat of the tested bolt at intervals along the Y-axis direction. Preferably, the first-section matching holes 11 and the second-section matching holes 21 of each pair of paired bolts to be tested and the first-section matching holes 11 and the second-section matching holes 21 of each other pair of paired bolts to be tested are respectively used for adapting bolts to be tested without specifications. Therefore, the same measuring bolt calibration test device can be used for carrying out tensile tests and torque tests on different tested bolts 8, and the universality of the measuring bolt calibration test device is greatly improved.
In addition, as shown in fig. 1-2, in an alternative embodiment, the first mounting seat 1 of the tested bolt and the second mounting seat 2 of the tested bolt are rectangular bodies, the length direction of the rectangular bodies is the Y-axis direction, the width direction of the rectangular bodies is the X-axis direction, and the thickness direction of the rectangular bodies is the Z-axis direction.
In addition, as shown in fig. 1-2, in an alternative embodiment, the thickness of the rectangular body of the second mounting seat 2 of the tested bolt is larger than that of the first mounting seat 1 of the tested bolt.
The content of the present invention is described above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the foregoing specification, all other embodiments that may be obtained by one of ordinary skill in the art without making any inventive effort are intended to be within the scope of patent protection.
Claims (10)
1. The device is used for enabling the tested bolt to be in a set stress state in any one of a tensile test and a torque test of the tested bolt, and the strain of the tested bolt can be measured in the stress state, so that the corresponding relation between the strain and the stress state can be calibrated; characterized by comprising the following steps:
the first mounting seat of the tested bolt is provided with a section of matched hole of the tested bolt, a first side surface of the first mounting seat of the tested bolt where the insertion end of the section of matched hole of the tested bolt is positioned, and a second side surface of the first mounting seat of the tested bolt where the extension end of the section of matched hole of the tested bolt is positioned;
the second mounting seat of the tested bolt is provided with a second section of matching hole of the tested bolt, a first side surface of the second mounting seat of the tested bolt, where the insertion end of the second section of matching hole of the tested bolt is positioned, and a second side surface of the second mounting seat of the tested bolt, which is positioned on the opposite side of the first side surface of the second mounting seat of the tested bolt;
the first mounting seat side matching connection structure of the tested bolt is arranged on the first side surface of the first mounting seat of the tested bolt and is used for being matched and connected with the matching connection structure on the connecting seat for the first tensile test;
the second installation seat side matching connection structure of the tested bolt is arranged on the second side surface of the second installation seat of the tested bolt and is used for being matched and connected with the matching connection structure on any one of the second connection seat for the tensile test and the connection seat for the torque test;
the first connecting seat for the tensile test is used for being matched and connected with the matched and connected structure at the first installation seat side of the tested bolt through the matched and connected structure positioned on the connecting seat for the tensile test;
the second connecting seat for the tensile test is used for being matched and connected with the second installation seat side matching and connecting structure of the tested bolt through the matching and connecting structure positioned on the second connecting seat for the tensile test;
the connecting seat for the torque test is used for being in matched connection with the matched connecting structure on the second installation seat side of the tested bolt through the matched connecting structure on the connecting seat for the torque test;
when any one of a tensile test and a torque test of the tested bolt is carried out, a stud of the tested bolt passes through a first section of matching hole of the tested bolt and is in threaded fit connection with a second section of matching hole of the tested bolt, so that the second side surface of the first mounting seat of the tested bolt is attached and locked with the first side surface of the second mounting seat of the tested bolt;
when the tensile test of the tested bolt is carried out, the side matched connection structure of the first mounting seat of the tested bolt and the side matched connection structure of the second mounting seat of the tested bolt are respectively connected to a tensile device through the connecting seat for the first tensile test and the connecting seat for the second tensile test, and the tensile force is applied to the stress center lines of the first mounting seat of the tested bolt and the second mounting seat of the tested bolt under the action of the tensile device and the central axis of the tested bolt;
when the torque test of the tested bolt is carried out, a reserved space which can be sleeved into a torque wrench at the head of the tested bolt is reserved on the side matched connection structure of the first mounting seat of the tested bolt, and the side matched connection structure of the second mounting seat of the tested bolt is fixed on the supporting base through the connecting seat for the torque test;
when the stud of the detected bolt passes through the first section of matching hole of the detected bolt and is in threaded matching connection with the second section of matching hole of the detected bolt, the central axis direction of the detected bolt is the Z-axis direction, a straight line direction perpendicular to the Z-axis direction on the joint surface between the second side surface of the first installation seat of the detected bolt and the first side surface of the second installation seat of the detected bolt is the X-axis direction, a straight line direction perpendicular to the Z-axis direction and the X-axis direction on the joint surface between the second side surface of the first installation seat of the detected bolt and the first side surface of the second installation seat of the detected bolt is the Y-axis direction, and the first T-shaped head is disconnected at the head part of the detected bolt to form the space.
2. The load cell calibration test device of claim 1, wherein: the second mounting seat side matching connection structure of the tested bolt comprises a second T-shaped head extending along the Y-axis direction, and the matching connection structure of the first connecting seat for the tensile test, the matching connection structure of the second connecting seat for the tensile test and the matching connection structure of the connecting seat for the torque test all adopt T-shaped grooves.
3. A load cell calibration test apparatus as defined in claim 2, wherein: the connecting seat for the first tensile test and/or the connecting seat for the second tensile test are/is provided with a neck and two shoulders symmetrically arranged on two sides of the neck along the Y-axis direction, the neck is used for being connected with the stretching equipment, and the T-shaped groove is formed in the two shoulders symmetrically arranged on two sides of the neck along the Y-axis direction.
4. A load cell calibration test apparatus as defined in claim 2, wherein: the connecting seat for torque test is provided with a connecting seat body for torque test and a support seat arranged at the bottom of the connecting seat body for torque test, connecting holes are distributed on the support seat and used for being connected with corresponding connecting holes on the supporting base through fastening bolts, and the T-shaped groove is formed in the connecting seat body for torque test.
5. A load cell calibration test apparatus as defined in claim 2, wherein: a first positioning structure for positioning the first mounting seat of the tested bolt and the connecting seat for the first tensile test in the Y-axis direction is arranged between the first mounting seat of the tested bolt and the connecting seat for the first tensile test; and a second positioning structure for positioning the second mounting seat of the tested bolt and the connecting seat for the second tensile test in the Y-axis direction is arranged between the second mounting seat of the tested bolt and the connecting seat for the second tensile test.
6. The load cell calibration test device of claim 5, wherein: the Y-axis direction is a vertical direction; the first positioning structure comprises a first positioning plate which is connected between the first mounting seat of the tested bolt and the connecting seat for the first tensile test and is simultaneously attached to the upper end surface of the first mounting seat of the tested bolt and the upper end surface of the connecting seat for the first tensile test; the second positioning structure comprises a second positioning plate which is connected between the second installation seat of the tested bolt and the connecting seat for the second tensile test and is simultaneously attached to the upper end face of the second installation seat of the tested bolt and the upper end face of the connecting seat for the second tensile test.
7. A load cell calibration test apparatus as defined in claim 2, wherein: the first section of the measured bolt matching holes and the second section of the measured bolt matching holes are more than two and are respectively arranged on the first measured bolt mounting seat and the second measured bolt mounting seat at intervals along the Y-axis direction.
8. The load cell calibration test apparatus of claim 7, wherein: the first section of the matched hole of the tested bolt, the second section of the matched hole of the tested bolt and the first section of the matched hole of the tested bolt, which are matched with other pairs, are respectively used for adapting to the tested bolts without specification.
9. A load cell calibration test apparatus as defined in claim 2, wherein: the first installation seat of the detected bolt and the second installation seat of the detected bolt are rectangular bodies, the length direction of each rectangular body is the Y-axis direction, the width direction of each rectangular body is the X-axis direction, and the thickness direction of each rectangular body is the Z-axis direction.
10. The load cell calibration test apparatus of claim 9, wherein: the thickness of the rectangular body of the second installation seat of the detected bolt is larger than that of the rectangular body of the first installation seat of the detected bolt.
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