CN212932159U - Fixing device for measuring bolt tensile force - Google Patents
Fixing device for measuring bolt tensile force Download PDFInfo
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- CN212932159U CN212932159U CN202021204171.3U CN202021204171U CN212932159U CN 212932159 U CN212932159 U CN 212932159U CN 202021204171 U CN202021204171 U CN 202021204171U CN 212932159 U CN212932159 U CN 212932159U
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- groove
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- bolt
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Abstract
A fixing device for measuring bolt stretching force comprises a pair of bodies, each body comprises a pair of half bodies which are buckled with each other and symmetrically arranged, each half body is provided with a first fixing groove and a second fixing groove, and the first fixing groove and the second fixing groove are respectively communicated with two ends of the body through a first through groove and a second through groove; each fixing head comprises a head body and a head column which are connected with each other, a testing through groove is formed in each head body and each head column, each head body is matched with the corresponding first fixing groove, each head column is located in the corresponding first through groove, the head of the bolt to be tested is clamped in the head body of one fixing head, and the tail of the bolt to be tested is clamped in the head body of the other fixing head through a nut; a pair of fixing columns, including a column body and a clamping part arranged at one end of the column body, wherein the clamping part is matched with the second fixing groove, and the column body extends out of the body from the second through groove; and a hoop sleeved on the body.
Description
Technical Field
The utility model relates to a bolt performance measuring device, especially a fixing device for bolt tensile force measurement.
Background
In automotive production, each vehicle requires a large number of bolts to assemble the parts together, and a vehicle may have about three thousand bolted joints, where a large number of safety and reliability function-related items are involved. The occurrence of problems in the bolt can cause serious safety accidents, so that the quality control of the mechanical property of the bolt is particularly important, and the tensile test is a simple and rapid method for evaluating the mechanical property of the bolt. At present, a professional bolt tension force measuring instrument is very expensive, a professional testing mechanism is equipped, and the enterprise with low testing frequency is too high in purchase and use cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned defect of prior art, provide a fixing device for bolt tensile force measurement.
In order to achieve the above object, the present invention provides a fixing device for measuring bolt tensile force, wherein, include:
the pair of bodies comprise a pair of half bodies which are buckled with each other and symmetrically arranged, each half body is provided with a first fixing groove and a second fixing groove, the first fixing groove and the second fixing groove are coaxially arranged with the bodies after the half bodies are buckled, the first fixing groove is communicated with one end of each half body through a first through groove, and the second fixing groove is communicated with the other end of each half body through a second through groove;
each fixing head comprises a head body and a head column which are connected with each other, a testing through groove for a bolt to be tested to pass through is formed in each head body and each head column, the head bodies are matched with the first fixing grooves, the head columns are located in the first through grooves, the bolt to be tested passes through the testing through grooves of the two fixing heads which are arranged oppositely, the head of the bolt to be tested is clamped in the head body of one fixing head, and the tail of the bolt to be tested is clamped in the head body of the other fixing head through a nut;
the pair of fixing columns comprise columns used for being connected with the stretching machine and clamping parts arranged at one ends of the columns, the clamping parts are matched with the second fixing grooves, and the columns extend out of the body from the second through grooves; and
the inner diameter of the hoop is matched with the outer diameter of the body, and the hoop is sleeved on the body.
The fixing device for measuring the tensile force of the bolt is characterized in that a boss for axially positioning the clamp is arranged on the outer edge of one end of the half body.
The fixing device for measuring the tensile force of the bolt is characterized in that the outer edge of the other end of the half body is provided with a chamfer.
The fixing device for measuring the tensile force of the bolt is characterized in that the half body is further provided with a middle through groove communicated with the first fixing groove and the second fixing groove.
The fixing device for measuring the tensile force of the bolt is characterized in that the first through groove, the second through groove and the middle through groove are equal in width.
The fixing device for measuring the tensile force of the bolt is characterized in that the center lines of the first through groove, the second through groove, the middle through groove, the first fixing groove and the second fixing groove are in the same straight line and are coaxial with the body.
Foretell a fixing device for measuring bolt tensile force, wherein, the test leads to the groove and is ladder groove or shoulder hole, the first trough width in ladder groove or the first aperture in shoulder hole corresponds to the head setting of the bolt that awaits measuring, the second trough width in ladder groove or the second aperture in shoulder hole corresponds to the diameter setting of the bolt that awaits measuring.
The fixing device for measuring the tensile force of the bolt is characterized in that the length of the body is greater than that of the clamp.
The fixing device for measuring the tensile force of the bolt is characterized in that the other end of the column body of the fixing column is provided with a chamfer.
The fixing device for measuring the tensile force of the bolt is characterized in that the body, the fixing column, the fixing head and the clamp are respectively made of high-strength steel materials.
The utility model has the beneficial effects that:
the utility model is suitable for a tensile force measurement of the threaded bolt of different diameters combines the stretcher to use, can fix the bolt of different diameters in the experiment, tests. The problem of fixed connection with equipment during bolt tensile test is solved, the defects of infirm direct clamping, surface damage and the like are avoided, the sample replacing speed is high, and the efficiency is high; each part of the fixing clamp is made of high-strength steel, so that the machining precision is high, and the assembly and disassembly are convenient; the bolt is stable and firm in the test, the stress directions are consistent, and the test accuracy is improved.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Drawings
Fig. 1 is a schematic structural view of a fixing device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of half bodies according to an embodiment of the present invention;
fig. 3 is a schematic view of a fixing column according to an embodiment of the present invention;
fig. 4 is a schematic view of a fixing head structure according to an embodiment of the present invention;
fig. 5 is a schematic view of a clamp structure according to an embodiment of the present invention.
1 main body
11 half body
12 first fixing groove
13 second fixing groove
14 first through groove
15 second through groove
16 middle through groove
17 boss
2 fixed column
21 column
22 engaging part
3 fixed head
31 head column
32 test through groove
33 head body
4 clamp
5 bolt to be tested
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
in the manufacturing process of automobiles, thousands of parts are required to be assembled together in the production of each automobile, bolt connection is generally applied as a main connection mode of the assembly of the whole automobile, nearly 3000 bolt connection points are probably arranged on each automobile, a large number of safety and function related items are involved, and serious safety accidents can be caused when bolts are in problems, so that the control of the quality of the bolts is particularly important. The bolting problem is directly related to production, and once a problem occurs, the production progress is directly influenced, so that the problem needs to be solved at the fastest speed. The tensile test is the main test for testing the mechanical properties of the bolt.
The utility model provides a be used for different bolt tensile force measuring fixing device combines the use of stretcher, can fix the bolt of different diameters in the experiment, can save relevant experimental test expense, provides quick timely technical support for producing relevant bolt problem analysis.
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a fixing device according to an embodiment of the present invention, and fig. 2 is a schematic structural view of a half body 11 according to an embodiment of the present invention. The utility model discloses a fixing device for measuring bolt tensile force, include: a pair of bodies 1, each body 1 includes a pair of half bodies 11 that are fastened to each other and symmetrically disposed, fig. 2 shows a schematic structural view of one half body 11, the other half body 11 has a completely same structure, and the two half bodies 11 having the same structure are fastened together to form a complete body 1. Each half body 11 is provided with a first fixing groove 12 and a second fixing groove 13, after the half bodies 11 are fastened, the first fixing groove 12 and the second fixing groove 13 are coaxially arranged with the body 1, the first fixing groove 12 is communicated with one end of each half body 11 through a first through groove 14, and the second fixing groove 13 is communicated with the other end of each half body 11 through a second through groove 15; each fixing head 3 comprises a head body 33 and a head column 31 which are connected with each other, a testing through groove 32 for a bolt 5 to be tested to pass through is arranged in each of the head body 33 and the head column 31, the head body 33 is matched with the first fixing groove 12, the head column 31 is positioned in the first through groove 14, the bolt 5 to be tested passes through the testing through grooves 32 of the two fixing heads 3 which are arranged oppositely, the head of the bolt 5 to be tested is clamped in the head body 33 of one fixing head 3, and the tail of the bolt 5 to be tested is clamped in the head body 33 of the other fixing head 3 through a nut; a pair of fixing posts 2, including a post 21 for connecting with a stretching machine and a clamping part 22 arranged at one end of the post 21, wherein the clamping part 22 is adapted to the second fixing groove 13, and the post 21 extends out of the body 1 from the second through groove 15; and the inner diameter of the hoop 4 is matched with the outer diameter of the body 1, and the hoop is sleeved on the body 1. Wherein, the outer edge of one end of each half body 11 can be further provided with a boss 17 for axially limiting and fixing the hoop 4. The outer edge of the other end of each half body 11 can be provided with a chamfer. Each half body 11 may further include an intermediate through groove 16 communicating the first fixing groove 12 and the second fixing groove 13. Preferably, the widths of the first through groove 14, the second through groove 15 and the middle through groove 16 are equal to facilitate processing, and the center lines of the first through groove 14, the second through groove 15, the middle through groove 16, the first fixing groove 12 and the second fixing groove 13 are collinear and coaxial with the body 1.
Referring to fig. 3, fig. 3 is a schematic structural view of a fixing column 2 according to an embodiment of the present invention. The column 21 of the pair of fixed columns 2 is preferably a cylinder 21, the engaging portion 22 provided at one end of the column 21 may preferably be a cylindrical table having a diameter larger than that of the cylinder 21, the engaging portion 22 is fitted into the second fixing groove 13, and the column 21 extends out of the main body 1 from the second through groove 15. The length of the column body 21 extending out of the outer part of the body 1 can be adjusted according to actual conditions, and the clamping requirement of the stretcher during testing can be met. The other end of the column body 21 of the fixed column 2 can also be provided with a chamfer.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a fixing head 3 according to an embodiment of the present invention. This fixed head 3 is preferably cylinder 21 structure, the test leads to the groove 32 and is preferably ladder groove or shoulder hole, the first trough width in ladder groove or the first diameter in shoulder hole correspond to the head setting of the bolt 5 that awaits measuring, the second trough width in ladder groove or the second diameter in shoulder hole correspond to the diameter setting of the bolt 5 that awaits measuring. Aiming at different diameters of the bolts 5 to be tested, the width or the aperture of the testing through groove 32 of the fixing head 3 is different, namely, the apertures of the through holes formed by the testing through grooves 32 in the two fixing heads 3 are different, so that different fixing heads 3 can be replaced aiming at different types of bolts to realize testing.
Referring to fig. 5, fig. 5 is a schematic structural view of a clamp 4 according to an embodiment of the present invention. This clamp 4 can be for the cylinder 21 of band-pass hole, the internal diameter of cylinder 21 and the external diameter adaptation of body 1, and clamp 4 is coaxial with body 1, the length of body 1 is greater than the length of clamp 4, clamp 4 can push away along axial fixity on the boss 17 of body 1 one end all the time. The body 1, the fixing column 2, the fixing head 3 and the clamp 4 are all preferably made of high-strength steel materials.
During the test, fix the bolt 5 that awaits measuring in fixed head 3 to be connected fixed head 3 and fixed column 2 and body 1, the stretcher centre gripping respectively can carry out corresponding test on two fixed columns 2. The specific operation can be firstly to select a pair of fixing heads 3 with proper apertures according to the diameter of the bolt 5 to be tested, the bolt 5 to be tested respectively passes through the two fixing heads 3, the head of the bolt 5 to be tested is clamped on the stepped groove or the stepped hole of the testing through groove 32 of one fixing head 3, and the tail of the bolt 5 to be tested is fixed in the stepped groove or the stepped hole of the testing through groove 32 of the other fixing head 3 by a nut. The fixing column 2 is placed in a second fixing groove 13 of one half body 11 of one body 1, a fixing head 3 with a bolt 5 to be tested is placed in a first fixing groove 12 of the half body 11, then the other half body 11 of the body 1 is buckled to wrap one end of the fixing column 2 and the fixing head 3 in the fixing column, then a hoop 4 is sleeved outside the two buckled half bodies 11, one end of the hoop 4 is clamped and fixed by a boss 17 at the edge of the half body 11, after the two half bodies 11 are buckled, the first fixing groove 12 and the second fixing groove 13 are respectively connected with the fixing head 3 and a clamping part 22 of the fixing column 2, and then the two half bodies 11 are tightly jointed by being sleeved with the hoop 4. The other fixing head 3 and the fixing column 2 are fixed in the other body 1 by the clamp 4 in the same way, wherein the positions of the bosses 17 of the pair of bodies 1 which are oppositely arranged correspond to the installation positions, namely, the boss 17 on one body 1 is positioned at one end close to the second fixing groove 13 (as shown in fig. 2), and the boss 17 on the other body 1 is positioned at one end close to the first fixing groove 12 (i.e. the boss 17 is positioned at the other end shown in fig. 2), so that after the fixing device is assembled, the bosses 17 of the two bodies 1 are both below, and the clamp 4 can be prevented from falling off when a tensile test is carried out in the vertical direction. The stretching machine is respectively clamped on the two columns 21 of the fixed column 2, and then corresponding tests can be carried out.
The utility model discloses can combine the stretcher to use, can fix the bolt of different diameters in the experiment, save relevant experimental test expense, improve efficiency of software testing, can provide quick timely technical support for producing relevant bolt problem analysis.
Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (10)
1. A fixing device for measuring bolt tension, comprising:
the pair of bodies comprise a pair of half bodies which are buckled with each other and symmetrically arranged, each half body is provided with a first fixing groove and a second fixing groove, the first fixing groove and the second fixing groove are coaxially arranged with the bodies after the half bodies are buckled, the first fixing groove is communicated with one end of each half body through a first through groove, and the second fixing groove is communicated with the other end of each half body through a second through groove;
each fixing head comprises a head body and a head column which are connected with each other, a testing through groove for a bolt to be tested to pass through is formed in each head body and each head column, the head bodies are matched with the first fixing grooves, the head columns are located in the first through grooves, the bolt to be tested passes through the testing through grooves of the two fixing heads which are arranged oppositely, the head of the bolt to be tested is clamped in the head body of one fixing head, and the tail of the bolt to be tested is clamped in the head body of the other fixing head through a nut;
the pair of fixing columns comprise columns used for being connected with the stretching machine and clamping parts arranged at one ends of the columns, the clamping parts are matched with the second fixing grooves, and the columns extend out of the body from the second through grooves; and
the inner diameter of the hoop is matched with the outer diameter of the body, and the hoop is sleeved on the body.
2. A fastening device for measuring tensile force of a bolt according to claim 1, wherein an outer edge of one end of said half body is provided with a boss for axial positioning of said clamp.
3. The fastening device for measuring a tensile force of a bolt according to claim 2, wherein the other end outer edge of the half body is provided with a chamfer.
4. The fixing device for measuring a tensile force of a bolt according to claim 1, 2 or 3, wherein the half body is further provided with an intermediate through groove for communicating the first fixing groove and the second fixing groove.
5. The fastening device for measuring tensile force of a bolt according to claim 4, wherein the first through groove, the second through groove and the intermediate through groove have equal groove widths.
6. The fastening device for measuring tensile force of a bolt according to claim 5, wherein the center lines of the first through groove, the second through groove, the intermediate through groove, the first fixing groove and the second fixing groove are collinear and coaxial with the body.
7. The fixing device for measuring the tensile force of the bolt according to claim 4, wherein the testing through groove is a stepped groove or a stepped hole, a first groove width of the stepped groove or a first aperture of the stepped hole is arranged corresponding to the head of the bolt to be measured, and a second groove width of the stepped groove or a second aperture of the stepped hole is arranged corresponding to the diameter of the bolt to be measured.
8. The fixture for measuring tensile force of a bolt of claim 4, wherein said body has a length greater than a length of said clamp.
9. The fixing device for measuring the tensile force of the bolt according to claim 4, wherein the other end of the column body of the fixing column is provided with a chamfer.
10. The fastening device for measuring tensile force of a bolt according to claim 4, wherein said body, said fastening post, said fastening head and said clamp are each a high-strength steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021204171.3U CN212932159U (en) | 2020-06-24 | 2020-06-24 | Fixing device for measuring bolt tensile force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021204171.3U CN212932159U (en) | 2020-06-24 | 2020-06-24 | Fixing device for measuring bolt tensile force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212932159U true CN212932159U (en) | 2021-04-09 |
Family
ID=75326627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021204171.3U Active CN212932159U (en) | 2020-06-24 | 2020-06-24 | Fixing device for measuring bolt tensile force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212932159U (en) |
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2020
- 2020-06-24 CN CN202021204171.3U patent/CN212932159U/en active Active
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