CN210981617U - Clamp for detecting bolt damage torque - Google Patents
Clamp for detecting bolt damage torque Download PDFInfo
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- CN210981617U CN210981617U CN201922369232.5U CN201922369232U CN210981617U CN 210981617 U CN210981617 U CN 210981617U CN 201922369232 U CN201922369232 U CN 201922369232U CN 210981617 U CN210981617 U CN 210981617U
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- bolt
- internal thread
- main screw
- screw rod
- torque detection
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Abstract
The utility model discloses a bolt destruction torque detection clamp, which comprises a main screw rod, wherein one end of the main screw rod is fixed with a base, and the base is used for being installed in a bolt detector; the other end of the main screw rod is provided with an internal thread clamping head, and the inner wall of the internal thread clamping head is provided with an internal thread matched with a bolt to be detected. An object of the utility model is to provide a bolt destroys anchor clamps for moment of torsion detection to solve the above-mentioned problem among the prior art, realize making the destruction moment of torsion of bolt detect and effectively combine with current bolt detector, reach the full automated inspection's of various bolt destruction moments of torsion purpose.
Description
Technical Field
The utility model relates to a material detection area, concretely relates to bolt destruction anchor clamps for torque detection.
Background
The detection of the breaking torque of the short and strong bolt is one of the conventional detection items of the mechanical property of the bolt, and the bolt is forced to be twisted off mainly by applying certain stable torque, so that the final breaking torque value is measured. A large amount of bolt destruction torque detection requirements are generated in the nuclear power station construction process, a laboratory in the past aims at the destruction torque detection requirements, and the bolt destruction torque is all processed in a type management and classification mode because a laboratory full-automatic bolt detector does not have a special matched torque clamp:
firstly, the high-strength short bolt has larger damage torque value and is difficult to twist off manually, and the detection is generally processed by adopting a mode of outsourcing a third party. The main problems are: 1) the outsourcing detection period is too long and uncontrollable; 2) outsourcing detection cost is high, and cost control difficulty is high due to the fact that no effective market price reference file exists.
And secondly, aiming at low strength and small-specification bolts, the detection is carried out by adopting a bolt detector torque sensor and a manual twist-off method. There are still 3 problems: 1) the manual damage mode is that a wrench is manually utilized to apply torque damage, and fixed torque and constant loading rate cannot be stably provided in the test process, so that the torque application rate cannot be accurately controlled, and the data discreteness is large; 2) in the whole process of the destructive test, personnel are directly exposed in front of the test piece, so that potential safety hazards are easily generated; 3) after the test, the broken wire is very difficult to take out, the test piece cannot be quickly replaced, and the test time is greatly prolonged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bolt destroys anchor clamps for moment of torsion detection to solve the above-mentioned problem among the prior art, realize making the destruction moment of torsion of bolt detect and effectively combine with current bolt detector, reach the full automated inspection's of various bolt destruction moments of torsion purpose.
The utility model discloses a following technical scheme realizes:
the clamp for detecting the bolt damage torque comprises a main screw rod, wherein one end of the main screw rod is fixed with a base, and the base is used for being installed in a bolt detector; the other end of the main screw rod is provided with an internal thread clamping head, and the inner wall of the internal thread clamping head is provided with an internal thread matched with a bolt to be detected.
To no matter be among the prior art the short bolt of high strength or the small-size bolt of low strength all can't use the bolt detector to destroy the problem that the moment of torsion detected, the utility model provides a bolt destroys anchor clamps for moment of torsion detection to main lead screw is as the main part, links firmly base, the other end at its one end and sets up the internal thread dop, and wherein the effect of base is used for carrying out erection joint with current bolt detector, and the effect of internal thread dop is for the bolt that awaits measuring provides stable installation position. The inner wall of the internal thread chuck is provided with an internal thread matched with a bolt to be detected, and stable connection and installation of the thread to be detected are realized through the internal thread. The utility model discloses when using, only need to detect the bolt and twist the internal thread dop, with pedestal mounting in the bolt detection appearance, wait to detect bolt top and connect torque sensor, can start bolt detection appearance and detect, twist off until being surveyed the bolt, obtain accurate bolt destruction moment of torsion through torque sensor. This application has overcome among the prior art short bolt of well high strength because destroy the moment of torsion too big, the enterprise can't oneself carry out the problem that detects, has also overcome the problem that the small dimension bolt of low strength can't provide fixed moment of torsion and invariable loading rate through artifical destruction mode, full play the equipment potentiality of current bolt detector, improved the precision and the efficiency that the bolt destroys the moment of torsion and detect, simultaneously for the user has avoided entrusting the third party to carry out the progress control uncertainty that the bolt destroys the moment of torsion and detect the production.
Further, the base is a hexagonal screw head. As a technical person in the field, on the basis of the existing bolt detector, the hexagonal screw head is used as the base, so that the combination with the existing bolt detector can be effectively realized, the full-automatic control of torque loading is realized, and the safety requirement of the detection process is improved.
Furthermore, the internal thread clamping head is a threaded hole formed in the end part of the main screw rod. The bolt to be tested can be conveniently and rapidly installed.
Furthermore, one end of the main screw rod, which is provided with the internal thread clamping head, is provided with a slot, and the slot divides the end part of the main screw rod into two parts. The tip with main lead screw after the experiment is convenient for part, and the convenient broken silk drops to it is very difficult to take out, unable quick replacement test piece leads to the problem of the passive extension of test time to solve prior art broken silk.
Furthermore, the internal thread clamp is divided into two parts by the slot. The internal thread that cracks with internal thread dop inner wall divide into two parts promptly, and this kind of setting can not influence the threaded connection between internal thread dop and the bolt of being surveyed, on the contrary can be better separate the tip of main lead screw after the experiment, and the effect that the broken silk of being convenient for was taken out is realized more conveniently.
Further, the slit passes through the axis of the main screw rod. The end part of the main screw rod is uniformly divided into two parts by the slit, and the strength consistency of the two parts is ensured.
Furthermore, the screw-thread type screw-thread driving device further comprises a lock sleeve in threaded connection with the main screw rod. The lock sleeve is in threaded connection with the main screw rod and used for locking a fracture formed by the seam in the experiment process, so that the main screw rod cannot be opened from the seam in the experiment process, and the structural stability of the main screw rod in the experiment process is ensured. After the experiment is finished, the lock sleeve is screwed to a position far away from the slit, and the slit can be opened to enable the broken wire to fall off.
Further, the device also comprises an ejector rod positioned between the internal thread chuck and the lock sleeve, a threaded hole communicated with the slot is formed in the side wall of the main screw rod, and the ejector rod is in threaded connection with the threaded hole. The ejector pin is used for jacking the opening seam, so that the opening seam is opened, and the broken wire is convenient to take out after the experiment is completed. Of course, in the experimental process, the end part of the ejector rod should not be in contact with the inner wall of the slot, so that the influence on the normal connection of the tested bolt is avoided. Preferably, the axis of the threaded hole for installing the mandril is mutually and perpendicularly intersected with the axis of the main screw rod.
The bolt failure torque detection method comprises the following steps:
s1, screwing the bolt to be detected into the internal thread chuck, installing the base in the bolt detector, and connecting a torque sensor at the top of the bolt to be detected;
and S2, starting the bolt detector until the detected bolt is screwed off.
Furthermore, a lock sleeve is screwed on the main screw rod, a slot is arranged at one end of the main screw rod, which is provided with the internal thread chuck, and a mandril is screwed into a threaded hole on the side surface of the main screw rod, so that the mandril is inserted into the slot;
before the bolt to be detected is screwed into the internal thread chuck, the lock sleeve is lifted to the highest position;
after the tested bolt is screwed off, the lock sleeve is lowered to the lowest position, and the ejector rod is screwed manually, so that the slit is expanded by the ejector rod until the broken wire falls out; and then the ejector rod is screwed back, and the gap is automatically reset.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model discloses bolt destruction anchor clamps for torque detection, overcome prior art well high strength short bolt because destroy the moment of torsion too big, the enterprise can't oneself carry out the problem that detects, the problem that the small size bolt of low strength can't provide fixed moment of torsion and invariable loading rate through artifical destruction mode has also been overcome, full play has the equipment potentiality of current bolt detector, the precision and the efficiency that the bolt destroys the moment of torsion and detects have been improved, simultaneously for the user avoided entrusting the third party to carry out the progress control uncertainty that the bolt destroys the moment of torsion and detect the production.
2. The utility model discloses bolt destroys anchor clamps for torque detection based on current bolt detector common in the laboratory, and the anchor clamps are designed specially, make to destroy the torque detection and effectively combine with the bolt detector, reach the full automated inspection's of various bolt destruction moments of torsion purpose.
3. The utility model discloses bolt destruction moment of torsion detects uses anchor clamps, the addition of ejector pin part, the ejector pin atress is twistd reverse in experimental back accessible, makes its anchor clamps possess the ability of freely deciliter to take out disconnected silk fast, solved prior art disconnected silk with this and very difficult to take out, unable quick replacement test piece, lead to the problem of test time extension greatly.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of an initial state of an embodiment of the present invention;
FIG. 2 is a schematic view of the working state of the embodiment of the present invention;
fig. 3 is a schematic view of the embodiment of the present invention showing a broken filament state.
Reference numbers and corresponding part names in the drawings:
1-main screw rod, 2-base, 3-internal thread chuck, 4-slotted, 5-lock sleeve and 6-ejector rod.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
the clamp for detecting the bolt damage torque as shown in fig. 1 and fig. 2 comprises a main screw rod 1, wherein one end of the main screw rod 1 is fixed with a base 2, and the base 2 is used for being installed in a bolt detector; the other end of the main screw rod 1 is provided with an internal thread chuck 3, and the inner wall of the internal thread chuck 3 is provided with an internal thread matched with a bolt to be detected. The base 2 is a hexagonal screw head. The internal thread chuck 3 is a threaded hole formed in the end part of the main screw rod 1.
Example 2:
as shown in fig. 1 to 3, in the bolt breakage torque detection jig according to embodiment 1, a slit 4 is provided at one end of the main screw 1 where the female screw chuck 3 is provided, and the slit 4 divides an end portion of the main screw 1 and the female screw chuck 3 into two parts. The slit 4 passes through the axis of the main screw rod 1. And the lock sleeve 5 is in threaded connection with the main screw rod 1. The novel screw rod is characterized by further comprising an ejector rod 6 located between the internal thread clamping head 3 and the lock sleeve 5, a threaded hole communicated with the slit 4 is formed in the side wall of the main screw rod 1, and the ejector rod 6 is in threaded connection with the threaded hole.
In this embodiment, the lock sleeve 5 is a nut.
The clamp in the embodiment is a special clamp for detecting bolt damage torque, and mainly comprises a main screw rod 1, a lock sleeve 5 and an ejector rod 6. Wherein main lead screw 1 is mainly responsible for transmitting bolt detector moment of torsion, and its hexagonal screw head is as base 2, mainly is responsible for being connected with current bolt detector. The ejector rod 6 is mainly responsible for taking out broken wires after the tested bolt is twisted off, and the internal thread chuck 3 is responsible for clamping the bolt to be tested through the internal thread.
The specific operation steps of this embodiment are as follows:
1) lifting the lock sleeve 5 to the highest position, and screwing the bolt to be detected into an internal thread chuck 3 at the top of the clamp, as shown in figure 2;
2) connecting the internal thread chuck with a bolt detector base, and connecting a torque sensor at the top of the bolt to be detected;
3) starting bolt detector equipment until the bolt is unscrewed;
4) the clamp is taken down, the lock sleeve 5 is lowered to the minimum, the mandril is screwed manually, the top end of the clamp is separated manually until the broken inner wire falls out or the broken inner wire is taken out manually, and the figure 3 shows that the clamp is a simple structure.
5) The ejector rod is loosened, so that the clamp automatically restores to the initial state shown in figure 1.
This embodiment adopts finished product high strength bolt to carry out whole cutting process as the base material of main lead screw 1, makes anchor clamps possess stronger endurance, stronger wholeness and rigidity, greatly improves the data stability of detection. Advanced mechanical equipment is adopted for secondary processing, and a high-precision machine tool is utilized to realize fixed-depth drilling and threading, so that the clamping depth completely meets the detection requirement, the high-precision occlusion of the bolt to be detected and the inner screw thread is improved, and the detection precision requirement is improved. Meanwhile, the base material is cut by the advanced water cutting machine, and the inside of a cutting seam is smooth and free of burrs, so that the generation of internal concentrated stress in the torsional shearing process is reduced, and the use efficiency of the clamp is improved.
The hexagonal screw head at the bottom of the main screw rod 1 can be effectively combined with the existing full-automatic bolt detection equipment, and full-automatic control of torque loading is realized, so that the safety requirement of the detection process is improved. The addition of the mandril 6 part can enable the clamp to have the capability of free separation and combination by twisting the mandril to bear force after the test, thereby quickly taking out the broken wire.
Through practical use verification, the clamp provided by the embodiment meets the design requirement. Each part of the clamp is skillfully designed, and all functions of design requirements are played in the test process. The fixture prepared by the whole metal processing has enough rigidity and strength to ensure the normal operation of the test. The embodiment enables the enterprise laboratory to basically have the internal self-detection capability, and the requirement of follow-up detection is met.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The clamp for detecting the bolt damage torque is characterized by comprising a main screw rod (1), wherein one end of the main screw rod (1) is fixed with a base (2), and the base (2) is used for being installed in a bolt detector; the other end of the main screw rod (1) is provided with an internal thread clamping head (3), and the inner wall of the internal thread clamping head (3) is provided with an internal thread matched with a bolt to be detected.
2. The bolt breakage torque detection jig according to claim 1, wherein the base (2) is a hexagonal head.
3. The bolt breakage torque detection jig according to claim 1, wherein the female screw chuck (3) is a threaded hole provided at an end of the main screw (1).
4. The bolt breakage torque detection jig according to claim 1, wherein a slit (4) is provided at one end of the main screw (1) where the female screw chuck (3) is provided, and the slit (4) divides the end of the main screw (1) into two parts.
5. The bolt breakage torque detection jig according to claim 4, wherein the slit (4) further divides the female screw chuck (3) into two parts.
6. The bolt failure torque detection jig according to claim 4, wherein the slit (4) passes through an axis of the main screw (1).
7. The bolt breakage torque detection jig according to claim 4, further comprising a lock sleeve (5) screwed to the main screw (1).
8. The bolt breakage torque detection clamp according to claim 7, further comprising a push rod (6) located between the internal thread chuck (3) and the lock sleeve (5), wherein a threaded hole communicated with the slit (4) is formed in the side wall of the main lead screw (1), and the push rod (6) is in threaded connection with the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922369232.5U CN210981617U (en) | 2019-12-25 | 2019-12-25 | Clamp for detecting bolt damage torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922369232.5U CN210981617U (en) | 2019-12-25 | 2019-12-25 | Clamp for detecting bolt damage torque |
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| Publication Number | Publication Date |
|---|---|
| CN210981617U true CN210981617U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922369232.5U Active CN210981617U (en) | 2019-12-25 | 2019-12-25 | Clamp for detecting bolt damage torque |
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| CN (1) | CN210981617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987276A (en) * | 2019-12-25 | 2020-04-10 | 四川中核艾瑞特工程检测有限公司 | Clamp for detecting bolt damage torque and detection method thereof |
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2019
- 2019-12-25 CN CN201922369232.5U patent/CN210981617U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987276A (en) * | 2019-12-25 | 2020-04-10 | 四川中核艾瑞特工程检测有限公司 | Clamp for detecting bolt damage torque and detection method thereof |
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