CN212363915U - Tensile experimental apparatus of bolted connection faying face - Google Patents
Tensile experimental apparatus of bolted connection faying face Download PDFInfo
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- CN212363915U CN212363915U CN202021314425.7U CN202021314425U CN212363915U CN 212363915 U CN212363915 U CN 212363915U CN 202021314425 U CN202021314425 U CN 202021314425U CN 212363915 U CN212363915 U CN 212363915U
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- bolt
- vertical block
- block
- right vertical
- left vertical
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Abstract
A tensile experimental device of a bolt connection joint surface is composed of a left vertical block, a right vertical block, a wedge block, a boss, a bolt, a nut, a gasket and a pressure sensor. The left vertical block and the right vertical block are of a bow-shaped structure, and the right vertical block is welded with a baffle plate for positioning on the front side and the rear side of the left vertical block. The boss is impressed to the trompil in the middle of the piece is found on a left side and the piece is found on the right side, and the whole experimental apparatus need not be changed to the boss of removable different experimental parameters in the experimentation, and is with low costs. The left vertical block and the right vertical block are connected through a bolt after being pressed into the boss, a strain gauge is attached to the bolt, and a pressure sensor is installed at one end of the bolt. After the bolt is connected, a wedge block is respectively arranged up and down, when the tensile testing machine pressurizes the experimental device, the left vertical block and the right vertical block are squeezed by the inclined surface of the wedge block to enable the left vertical block and the right vertical block to have a tendency of being separated towards two sides, and the bolt is under tensile force. The deformation of the bolt connection joint surface under different parameters and different pressures applied on the joint surface is measured through experiments, and the deformation of the beam is further deduced. The device has the advantages of exposed bolt and convenient installation.
Description
The technical field is as follows:
the utility model relates to a bolted connection combines partial parameter to influence experimental apparatus for research of bolted connection rigidity in the bolted connection crossbeam that the atress is great, rigidity requirement is higher.
Background art:
large-scale crossbeams are common in mechanical products, the crossbeams are generally manufactured in a segmented mode and then are connected into a whole crossbeam through bolts, if the crossbeams have higher rigidity requirements, the connecting bolts of the crossbeams generally adopt a plurality of high-strength bolts and are pre-tightened, and if the crossbeams on a large-scale machine tool are formed by connecting a plurality of sections of beam bolts and have higher rigidity requirements, the crossbeams are connected through bolts. The upper joint surface of the beam joint is pressed, and the contact rigidity is easy to ensure. The lower parts of the joint surfaces of the beam joints are connected by high-strength bolts, the bolts are pulled, the lower parts of the joint surfaces of the beams tend to be separated, the rigidity of the part is improved only by the bolts, the lower bolt joints are the key points of the rigidity of the beam joints and the whole beam, and the rigidity of the whole beam basically depends on the rigidity of the lower bolt joints of the beam joints. The factor that influences the rigidity of crossbeam joint portion is more, generally adopts at present to couple together two circular steel sheets at laboratory with high strength bolt, bores a bolted connection for the round hole in the middle of the circular steel sheet, circular steel sheet welding drum, the other end welding apron of drum, the tapping of driling on the apron, screw in screw thread stick, two thread sticks of two upper and lower chuck centre grippings of tensile testing machine are tensile, and the drum side is left the mounting hole and is used for the bolt of erection joint two steel sheets, pressure sensor etc.. The method comprises the steps of measuring real-time pressure by using a pressure sensor, measuring deformation of a bolt by using a strain gauge, measuring deformation of the bolt and a contact surface under the conditions of different contact areas, different surface roughness, different pressures and the like, and simulating the deformation of the beam under different stresses by using computer software to find a method for improving the rigidity of the beam.
The experimental apparatus of present general use, the bolt is in the inside of two drums, and the installation is very troublesome with the nut of screwing up, and the mounting hole that the drum side was reserved also influences the experiment effect. It is also troublesome to lead the leads of the strain gauge and the pressure sensor to the outside of the experimental apparatus.
The invention content is as follows:
the utility model provides a tensile experimental apparatus of bolted connection faying face to the above-mentioned defect of prior art. The utility model provides a bolt joint plane tensile test device utilizes the pressure that tensile testing machine produced, thereby produces the pulling force on the bolt through two voussoirs on this device to the vertical piece extrusion about this device.
A tensile experimental device of a bolt connection joint surface is composed of a left vertical block, a right vertical block, a wedge block, a boss, a bolt, a nut, a gasket and a pressure sensor. The left vertical block and the right vertical block are in an X-shaped structure after being connected by a bolt, an upper V-shaped opening and a lower V-shaped opening are matched with the wedge blocks, and the upper wedge block and the lower wedge block are pushed by being pressed to lead the left vertical block and the right vertical block to have a trend of moving towards two sides, thereby leading the bolt to be under tension. The bolt is pasted with a strain gauge for measuring the deformation, and one end of the bolt is provided with a pressure sensor for measuring the stress.
The utility model provides a bolt joint binding face tensile experimental apparatus, bolted connection's position is in the outside of two chucks about tensile testing machine, and the bolt both ends expose, and bolt simple to operate, foil gage, pressure sensor wire wiring are convenient, convenient observation, operation safety.
The technical scheme for solving the technical problem is as follows:
a tensile experimental device of a bolt connection joint surface is composed of a left vertical block, a right vertical block, a wedge block, a boss, a bolt, a nut, a gasket and a pressure sensor. The left vertical block and the right vertical block are similar in structure and are of a bow-shaped structure, and the right vertical block is welded with a baffle more than the left vertical block on the front side and the rear side respectively, so that the positioning effect is achieved when the left vertical block and the right vertical block are connected together through bolts. The left side founds the piece and the right side founds the middle trompil of piece, and the boss is impressed in the transition fit in the hole, and drilling in the middle of the boss passes the bolt in the hole, and the boss is removable, and the workable a plurality of boss, the different roughness and the hardness of surface preparation that two bosss laminated each other, the boss of different experimental parameters only need be changed in the experimentation, need not change whole experimental apparatus, and is with low costs. The left vertical block and the right vertical block are connected through a bolt after being pressed into the boss, a strain gauge is attached to the bolt, and a pressure sensor is installed at one end of the bolt.
A wedge block is respectively arranged on the upper part and the lower part of the left vertical block and the right vertical block which are connected by the bolt, and then the wedge blocks are arranged between two chucks of the testing machine, and the wedge block oblique angle is the same as the oblique angles of the left vertical block and the right vertical block. When the tensile testing machine pressurizes the experimental device, the inclined plane of the wedge block extrudes the left vertical block and the right vertical block which are connected together, so that the left vertical block and the right vertical block have a tendency of being separated towards two sides, and the bolt is pulled. The pressure sensor is sleeved on the bolt and used for measuring acting force on the bolt in the experimental process, and the strain gauge attached to the bolt is used for measuring the deformation of the bolt. The deformation of the joint surface of the bolt connection under the conditions of different contact areas, different roughness and different hardness and different pressures applied to the joint surface is measured through experiments, and the deformation of the cross beam is further deduced.
The utility model provides a bolted connection combines tensile experimental apparatus of face, bolted connection's position is in the outside of two chucks about tensile testing machine, and bolt simple to operate, connection, the simple to operate of foil gage, pressure sensor wire are convenient for observe, operation safety.
Description of the drawings:
FIG. 1 is a perspective view of the assembly of the present invention;
FIG. 2 is a main sectional view of the assembly of the present invention;
FIG. 3 is a left side view of the assembly of the present invention;
FIG. 4 is an isometric view of the right riser block;
FIG. 5 is a front cross-sectional view of the right upright block;
FIG. 6 is an isometric view of the left vertical block;
FIG. 7 is a front cross-sectional view of the left stand block;
FIG. 8 is a perspective view of a non-wedge assembly.
In the figure, 1 is a wedge block, 2 is a left vertical block, 3 is a pressure sensor, 4 is a bolt, 5 is a boss, 6 is a right vertical block, 7 is a baffle, 8 is a nut, and 9 is a gasket.
The specific implementation mode is as follows:
a tensile experimental apparatus of a bolt connection joint surface is composed of a left vertical block (2), a right vertical block (6), a wedge block (1), a boss (5), a bolt (4), a nut (8), a gasket (9) and a pressure sensor (3). The left vertical block (2) and the right vertical block (6) are similar in structure and are of a bow-shaped structure, and the right vertical block (6) is welded with a baffle (7) more than the left vertical block (2) on the front side and the rear side respectively to play a role in positioning when the left vertical block (2) and the right vertical block (6) are connected together through bolts (4). The left side founds trompil in the middle of piece (2) and the right side founds piece (6), and transition fit impresses boss (5) in the hole, and drilling in the middle of boss (5) passes bolt (4) in the hole, and boss (5) are removable, and boss (5) can be processed a lot of, and the surface that two boss (5) laminated each other makes into different roughness and hardness, only need change boss (5) of different experimental parameters among the experimentation, need not change whole experimental apparatus, and is with low costs. The left vertical block (2) and the right vertical block (6) are pressed into the boss (5) and then connected through the bolt (4), the strain gauge is attached to the bolt (4), and one end of the bolt (4) is installed into the pressure sensor (3).
A wedge block (1) is respectively arranged on the upper part and the lower part of a left vertical block (2) and a right vertical block (6) which are connected by a bolt (4), and then the wedge block (1) is arranged between two chucks of a testing machine, and the oblique angle of the wedge block (1) is the same as that of the left vertical block (2) and the right vertical block (6). When the tensile testing machine pressurizes the experimental device, the inclined surface of the wedge block (1) extrudes the left vertical block (2) and the right vertical block (6) which are connected together, so that the left vertical block (2) and the right vertical block (6) have a tendency of separating towards two sides, and the bolt (4) is pulled. The pressure sensor (3) is sleeved on the bolt (4) and used for measuring acting force on the bolt (4) in the experimental process, and the strain gauge attached to the bolt (4) is used for measuring deformation of the bolt (4). The deformation of the joint surface of the bolt (4) when different pressures are applied to the joint surface under the conditions of different contact areas, different roughness and different hardness is measured through experiments, and the deformation of the cross beam is further deduced.
The utility model provides a bolt joint binding face tensile experimental apparatus, the outside of two chucks about the tensile testing machine in the position that bolt (4) are connected, bolt (4) simple to operate, connection, the simple to operate of foil gage, pressure sensor (3) wire, the observation of being convenient for, operation safety.
Claims (1)
1. A tensile experimental apparatus of bolted connection faying face comprises a left upright block (2), a right upright block (6), a wedge block (1), a boss (5), a bolt (4), a nut (8), a gasket (9) and a pressure sensor (3), wherein the left upright block (2) and the right upright block (6) are similar in structure and are of a bow-shaped structure, and the right upright block (6) is welded with a baffle (7) more than the left upright block (2) on the front side and the rear side respectively to play a role in positioning when the left upright block (2) and the right upright block (6) are connected together by the bolt (4); holes are formed in the middle of the left vertical block (2) and the right vertical block (6), bosses (5) are pressed in the holes in a transition fit mode, holes are drilled in the middle of the bosses (5), bolts (4) penetrate through the holes, the bosses (5) can be replaced, the bosses (5) can be machined in a plurality of numbers, the surfaces, which are mutually attached, of the two bosses (5) are manufactured into different surface roughness and hardness, only the bosses (5) with different experimental parameters need to be replaced in the experimental process, the whole experimental device does not need to be replaced, and the cost is low; the left vertical block (2) and the right vertical block (6) are pressed into the boss (5) and then connected through a bolt (4), a strain gauge is attached to the bolt (4), and one end of the bolt (4) is installed into the pressure sensor (3); the left vertical block (2) and the right vertical block (6) which are connected by the bolts (4) are respectively provided with a wedge block (1) from top to bottom and then are arranged between two chucks of the testing machine, and the oblique angle of the wedge block (1) is the same as that of the left vertical block (2) and the right vertical block (6); when the tensile testing machine pressurizes the experimental device, the inclined surface of the wedge block (1) extrudes the left vertical block (2) and the right vertical block (6) which are connected together, so that the left vertical block (2) and the right vertical block (6) have a tendency of separating towards two sides, and the bolt (4) is pulled; the pressure sensor (3) is sleeved on the bolt (4) and used for measuring acting force on the bolt (4) in the experimental process, and the strain gauge attached to the bolt (4) is used for measuring the deformation of the bolt (4); the deformation of the joint surface of the bolt (4) when different pressures are applied to the joint surface under the conditions of different contact areas, different roughness and different hardness is measured through experiments, and the deformation of the cross beam is further deduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021314425.7U CN212363915U (en) | 2020-07-07 | 2020-07-07 | Tensile experimental apparatus of bolted connection faying face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021314425.7U CN212363915U (en) | 2020-07-07 | 2020-07-07 | Tensile experimental apparatus of bolted connection faying face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212363915U true CN212363915U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021314425.7U Expired - Fee Related CN212363915U (en) | 2020-07-07 | 2020-07-07 | Tensile experimental apparatus of bolted connection faying face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212363915U (en) |
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2020
- 2020-07-07 CN CN202021314425.7U patent/CN212363915U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210115 Termination date: 20210707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |