CN108007782A - Bolt strength detection device and method - Google Patents
Bolt strength detection device and method Download PDFInfo
- Publication number
- CN108007782A CN108007782A CN201711476382.5A CN201711476382A CN108007782A CN 108007782 A CN108007782 A CN 108007782A CN 201711476382 A CN201711476382 A CN 201711476382A CN 108007782 A CN108007782 A CN 108007782A
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- expanding sleeve
- piston body
- workbench
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The invention discloses a kind of bolt strength detection device and method, including workbench, expanding sleeve, cylinder body, piston body, high-pressure oil pump and dial gauge, workbench is equipped with and is installed on the matched through hole of expanding sleeve, expanding sleeve in through hole；Positioning step is equipped with the top of expanding sleeve, expanding sleeve is fixed on workbench by positioning step；Expanding sleeve top is equipped with the matched annular groove of cylinder body with annular, and cylinder body bottom is arranged in annular groove；The piston body of annular, which is slidingly sealed, to be installed on cylinder body, and hydraulic cavities are formed between cylinder body and piston body；Piston body top is provided with quick coupling, and quick coupling is connected to hydraulic cavities by the straight through tube through piston body；High-pressure oil pump connects quick coupling, and expanding sleeve and piston body are equipped with internal thread, and dial gauge is fixed on workbench or expanding sleeve, and the measurement head of dial gauge and the screw rod end face perpendicular contact of bolt to be detected.The configuration of the present invention is simple, it is easy to use, it can rapidly and accurately judge whether bolt strength is up to standard.
Description
Technical field
The invention belongs to bolt performance detection technical field, more particularly to bolt strength detection device and method.
Background technology
High-strength bolt is widely used in industries such as industrial and mineral, the energy, water conservancy, buildings, substantially there is the ground of machine operation
, there is the figure of various high-strength bolts in side.High-strength bolt is used for two parts being fixedly connected, high-strength under working status
The part that degree bolt is fixed generally remains motion or vibration state.Therefore, whether bolt strength is up to standard extremely important, if intensity
It is not up to standard, machine breakdown may be caused, security incident is even caused when serious.
Notification number is the Chinese invention patent of CN2888438Y, discloses a kind of bolt strength detection device, including rack,
Bolt torsion testing agency, bolt axial force testing agency and power drive mechanism, the bolt strength detection device can detect that spiral shell
The torsion and axle power value of bolt, but there are it is complicated, inconvenient, manufacture it is of high cost, take up a large area the problems such as.
In currently manufactured field enterprise, the generally first outsourcing storage of bolt, needs to get from storehouse further according to production.To ensure
Bolt performance meets the requirements, and when storage generally requires carries out intensity detection to bolt.In this case, as long as can detect in fact
Whether bolt strength is up to standard, without obtaining specific bolt strength data.
The content of the invention
It can directly judge intensity bolt strength detection device whether up to standard and method the object of the present invention is to provide a kind of.
Bolt strength detection device of the present invention, including：
Workbench 100, expanding sleeve 200, cylinder body 300, piston body 400, high-pressure oil pump and dial gauge 600, wherein：
Workbench 100 is equipped with and is installed on 200 matched through hole of expanding sleeve, expanding sleeve 200 in through hole；
The top of expanding sleeve 200 is equipped with positioning step 210, and expanding sleeve 200 is fixed on workbench 100 by positioning step 210
On；
200 top of expanding sleeve is equipped with the 300 matched annular groove of cylinder body with annular, and 300 bottom of cylinder body is arranged on ring
In connected in star；
The piston body 400 of annular, which is slidingly sealed, to be installed on cylinder body 300, and liquid is formed between cylinder body 300 and piston body 400
Press chamber 420；
400 top of piston body is provided with quick coupling 500, and quick coupling 500 passes through the straight through tube through piston body 400
410 are connected to hydraulic cavities 420；
High-pressure oil pump connects quick coupling 500, for injecting hydraulic oil to hydraulic cavities 420 by straight through tube 410；
Expanding sleeve 200 and piston body 400 are equipped with internal thread, and bolt 800 to be detected can just screw in expanding sleeve from bottom to up
200 and piston body 400 in；
Dial gauge 600 is fixed on workbench 100 or expanding sleeve 200, and the measurement head 620 of dial gauge 600 with it is to be detected
The screw rod end face perpendicular contact of bolt 800.
Further, the contact surface side wall of the piston body 400 and the cylinder body 300 is equipped with the seal of annular
430。
More specifically, piston body 400 is outer or the sealing ring in piston body 400 to be sleeved on for the seal 430.
Preferably, the expanding sleeve 200 includes the fixed part 220 on top and the detachable part 240 of lower part, wherein：
The top of fixed part 220 is equipped with the first positioning step 210, and the first positioning step 210 is placed on 100 table top of workbench,
Fixed part 220 is installed in the through hole of workbench 100 and is fixed on by the first positioning step 210 on workbench 100；
The top of detachable part 240 is equipped with the second positioning step 230, and 230 top of the second positioning step is equipped with and fixed part 220
The matched groove in bottom, 220 bottom of fixed part are arranged in the groove；Second positioning step 230 is removably fixed on work
Make 100 lower surface of platform.
Further, 220 bottom of fixed part sets some positioning protrusion, 240 top of detachable part set with
The corresponding location hole of some positioning protrusion；Alternatively, 220 bottom of fixed part sets some location holes, the detachable part 240
Top sets positioning protrusion corresponding with some location holes；Positioning protrusion is set to be inserted into corresponding location hole.
Further, the detachable part 240 is made of left hitch 241 and the locking of right hitch 242, wherein：
There is left hitch 241 first inner arc surface 2411, the first exterior arc surface 2412 and the parallel left assembling of axis to lead to
Hole 2413 and left pilot hole 2414, left assembling through hole 2413 and left pilot hole 2414 are located at the two of the first inner arc surface 2411 respectively
Side, the first inner arc surface 2411 have internal thread；
Right hitch 242 has the second inner arc surface 2421, the second exterior arc surface 2422 and the parallel right pilot hole of axis
2423 and it is right assembling through hole 2424, right pilot hole 2423 and it is right assembling through hole 2424 respectively be located at the second inner arc surface 2421 two
Side, the second inner arc surface 2421 have internal thread；
Left assembling through hole 2413 and right pilot hole 2423 match, left pilot hole 2414 and right assembling 2424 phase of through hole
Match somebody with somebody；
Left assembling through hole 2413, right pilot hole 2423 are sequentially passed through using a locking member, worn successively using another locking member
Right assembling through hole 2424, left pilot hole 2414 are crossed, so as to fulfill the locking of left hitch 241 and right hitch 242.
Bolt strength detection method of the present invention, is detected using above-mentioned bolt strength detection device, including：
Bolt 800 to be detected is screwed into expanding sleeve 200 and piston body 400 from bottom to up, adjusts the measurement bar of dial gauge 600
620, the measurement head 610 of dial gauge 600 is contacted the screw rod end face of bolt 800 to be detected and is compressed 0.4mm~0.6mm, 0.4mm
The original reading of~0.6mm, that is, dial gauge 600；
The corresponding pressure of strength criterion, i.e. maximum pressure are calculated according to strength criterion；High-pressure oil pump injects liquid to hydraulic cavities
Pressure oil, starts to stretch bolt 800 to be detected, reaches maximum pressure to pressure, stops injection hydraulic oil；
When reaching and keeping maximum pressure, reading on dial gauge 600 is observed, if reading is maintained near original reading,
And the error of reading and original reading is not more than 0.1mm after release, at this time, bolt 800 to be detected is considered qualified；
If reading keeps increase, bolt 800 to be detected is considered unqualified；
If reading is maintained near original reading, but after release, the error of reading and original reading is then treated more than 0.4mm
Detection bolt 800 is still considered as unqualified；
The original reading nearby refers to the range of readings of original reading ± 0.1mm.
The invention has the advantages that and beneficial effect：
(1) it can rapidly and accurately judge whether bolt strength is up to standard, so as to avoid unqualified bolt from being led after coming into operation
The heavy losses of cause.
(2) simple in structure compact, easy to use, the electric or hand hydraulic pump of can arranging in pairs or groups uses, can meet factory, mining site,
Use even on the building site of field.
Brief description of the drawings
Fig. 1 is a kind of concrete structure schematic diagram of bolt strength detection device of the present invention；
Fig. 2 is another concrete structure schematic diagram of bolt strength detection device of the present invention；
Fig. 3 is the concrete structure schematic diagram of expanding sleeve in bolt strength detection device of the present invention.
In figure：
100- workbench；
200- expanding sleeves, the first positioning steps of 210-, 220- fixed parts, the second positioning steps of 230-, 240- detachable parts,
The left hitch of 241-, the first inner arc surfaces of 2411-, the first exterior arc surfaces of 2412-, the left assembling through holes of 2413-, 2414 left pilot holes,
The right hitch of 242-, the second inner arc surfaces of 2421-, the second exterior arc surfaces of 2422-, the right pilot holes of 2423-, the right assembling through holes of 2424-；
300- cylinder bodies；
400- piston bodies, 410- straight through tube, 420- hydraulic cavities, 430- seals；
500- quick couplings；
600- dial gauges, 610- measurement heads, 620- measurement bars；
700- stents；
800- bolts to be detected.
Embodiment
In order to illustrate the embodiments of the present invention more clearly and/or technical solution of the prior art, attached drawing will be compareed below
Illustrate the embodiment of the present invention.It should be evident that drawings in the following description are only the embodiment of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing, and obtain other embodiments.
Embodiment 1
Fig. 1 show a kind of concrete structure schematic diagram of bolt strength detection device, including workbench 100, expanding sleeve
200th, cylinder body 300, piston body 400, high-pressure oil pump are not drawn and dial gauge 600 in figure.Workbench 100 is equipped with and stretching
200 matched through holes are covered, expanding sleeve 200 is installed in through hole.The top of expanding sleeve 200 is equipped with the first positioning step 210, expanding sleeve
200 are fixed on workbench 100 by the first positioning step 210.Cylinder body 300 and piston body 400 are annular.Expanding sleeve
200 tops are equipped with annular groove, and 300 bottom of cylinder body is arranged in annular groove.The inner side of cylinder body 300 is equipped with the step of annular
Face, piston body 400, which is slidingly sealed, is installed on the step surface of cylinder body 300 and is formed between cylinder body 300 hydraulic cavities 420.It is living
The contact surface side wall of cock body 400 and cylinder body 300 is equipped with the seal 430 of annular, and more specifically, seal 430 is to be sleeved on
Piston body 400 is outer or the sealing ring in piston body 400.400 top of piston body is provided with quick coupling 500, quick coupling
500 are connected to hydraulic cavities 420 by the straight through tube 410 through piston body 400.Quick coupling 500 is used for connecting high-pressure oil pump,
High-pressure oil pump is used for injecting hydraulic oil to hydraulic cavities 420 by straight through tube 410.Expanding sleeve 200 and piston body 400 are equipped with interior spiral shell
Line, bolt 800 to be detected can be screwed in just in expanding sleeve 200 and piston body 400 from bottom to up.Dial gauge 600 is arranged on stent 700
On, stent 700 is fixed on expanding sleeve 200, is adjusted stent 700, is made 610 perpendicular contact of measurement head of dial gauge 600 to be detected
The screw rod end face of bolt 800, you can start to detect.
In the present invention, bolt 800 to be detected is assemblied in expanding sleeve 200 and piston body 400 from the bottom up, with high pressure oil
Pump as power source, inject hydraulic oil to hydraulic cavities, piston body 400 jacks up, so that it is to be detected pair to be closely screwed on piston body 400
Bolt 800 produces upward pulling force, you can realizes the stretching of bolt 80 to be detected.
The application method of the present embodiment bolt strength detection device is as follows：
Bolt 800 to be detected is screwed into expanding sleeve 200 and piston body 400 from bottom to up, bolt 800 and expanding sleeve to be detected
200 and piston body 400 inner wall be in close contact.The measurement bar 620 of dial gauge 600 is adjusted, makes the measurement head of dial gauge 600
The screw rod end face of 610 contact bolts 800 to be detected simultaneously compresses 0.5mm, the original reading of 0.5mm, that is, dial gauge 600.According to intensity
The corresponding pressure of criterion calculation strength criterion, i.e. maximum pressure, open hydraulic circuit safety valve, and high-pressure oil pump is injected to hydraulic cavities
Hydraulic oil, starts to stretch bolt 800 to be detected.During stretching, the The hydraulic oil of injection is controlled, is made to bolt to be detected
800 pressure reaches maximum pressure, stops injection hydraulic oil.
In drawing process, when reaching and keeping maximum pressure, reading on dial gauge 600 is observed, if reading is maintained at former
Near beginning reading, and after hydraulic circuit unloading, the error of 600 reading of dial gauge and original reading is not more than 0.1mm, at this time,
Bolt 800 to be detected is considered qualified；If 600 reading of dial gauge keeps increase, bolt 800 to be detected is considered unqualified；
If 600 reading of dial gauge is maintained near original reading, but after hydraulic circuit unloading, 600 reading of dial gauge and original reading
Error is still considered as unqualified more than 0.4mm, then bolt 800 to be detected.Here, original reading nearby refer to original reading ±
The range of readings of 0.1mm.
Embodiment 2
The present embodiment only improves 200 structure of expanding sleeve in embodiment 1, and as shown in Fig. 2~3, expanding sleeve 200 includes
The fixed part 220 on top and the detachable part 240 of lower part, fixed part 220 are installed in through hole, and the first of the top of fixed part 220
Positioning step 210 is placed on 100 table top of workbench, and fixed part 220 is fixed on workbench 100 by the first positioning step 210.
More specifically, the first positioning step 210 can be fixed on workbench 100 using some connectors (not drawn in figure).Can
The top of disassembling part 240 is equipped with the second positioning step 230, and 230 top of the second positioning step is equipped with matched with 220 bottom of fixed part
Groove, 220 bottom of fixed part are arranged in the groove, the second positioning step 230 are removably fixed under workbench 100
Surface, you can realize being detachably connected for fixed part 220 and detachable part 240.More specifically, some be detachably connected can be used
Second positioning step 230 is fixed on workbench 100 by part (not drawn in figure).
To make the fixation between fixed part 220 and detachable part 240 more stable, a kind of preferred solution is：At 220 bottom of fixed part
End sets some positioning protrusion, and location hole corresponding with some positioning protrusion is set on 240 top of detachable part；Alternatively, solid
Determine 220 bottom of portion and some location holes are set, positioning protrusion corresponding with some location holes is set on 240 top of detachable part.Make
Positioning protrusion is inserted into corresponding location hole, and the connection between fixed part 220 and detachable part 240 can be made more stable and reliable.
Further, detachable part 240 is made of left hitch 241 and the locking of right hitch 242, and left hitch 241 has first
2411 and first exterior arc surface 2412 of inner arc surface, the first inner arc surface 2411 have internal thread；Likewise, right hitch 242 has
There are the second inner arc surface 2421 and the second exterior arc surface 2422, the second inner arc surface 2421 has internal thread.Left hitch 241 has
Axis parallel left assembling through hole 2413 and left pilot hole 2414, left assembling through hole 2413 and left pilot hole 2414 are respectively positioned at the
The both sides of one inner arc surface 2411.Right hitch 242 has the parallel right pilot hole 2423 of axis and right assembling through hole 2424, right dress
Distribution 2423 and right assembling through hole 2424 are located at the both sides of the second inner arc surface 2421 respectively.Left assembling through hole 2413 and right assembling
Hole 2423 matches, and left pilot hole 2414 and right assembling through hole 2424 match, and it is logical to sequentially pass through left assembling using a locking member
Hole 2413, right pilot hole 2423, sequentially pass through right assembling through hole 2424, left pilot hole 2414, so that real using another locking member
The locking of existing left hitch 241 and right hitch 242.Under locking state, 2421 structure of the first inner arc surface 2411 and the second inner arc surface
Into a complete circle, the first exterior arc surface 2412 and the second exterior arc surface 2422 also form a complete circle.
Before detection, bolt 800 to be detected is arranged on the sky that the first inner arc surface 2411 and the second inner arc surface 2421 are surrounded
Intracavitary, bolt 800 to be detected is locked.By the part that bolt 800 to be detected stretches out detachable part 240 be torqued-up to fixed part 220,
In piston body 400, detachable part 240 is fixed on workbench 100.After the completion of detection, lower detachable part 240 is dismantled, pair can
Disassembling part 240 unlocks, and bolt 800 to be detected is taken out after unlock.Improved expanding sleeve 200 in the present embodiment so as to be detected
The installation and removal of bolt 800 are more convenient, and it is time-consuming can also to save installation and removal institute.
Above-described embodiment is used for illustrating the present invention, rather than limits the invention, the present invention spirit and
In scope of the claims, any modifications and changes are made to the present invention, both fall within protection scope of the present invention.
Claims (7)
1. bolt strength detection device, it is characterized in that, including：
Workbench (100), expanding sleeve (200), cylinder body (300), piston body (400), high-pressure oil pump and dial gauge (600), its
In：
Workbench (100) is equipped with and is installed on expanding sleeve (200) matched through hole, expanding sleeve (200) in through hole；
The first positioning step (210) is equipped with the top of expanding sleeve (200), expanding sleeve (200) is fixed by the first positioning step (210)
In on workbench (100)；
Expanding sleeve (200) top is equipped with cylinder body (300) matched annular groove with annular, and cylinder body (300) bottom is arranged on
In annular groove；
The piston body (400) of annular, which is slidingly sealed, to be installed on cylinder body (300), shape between cylinder body (300) and piston body (400)
Into hydraulic cavities (420)；
Piston body (400) top is provided with quick coupling (500), and quick coupling (500) passes through the perforation through piston body (400)
Pipeline (410) is connected to hydraulic cavities (420)；
High-pressure oil pump connection quick coupling (500), for injecting hydraulic oil to hydraulic cavities (420) by straight through tube (410)；
Expanding sleeve (200) and piston body (400) are equipped with internal thread, and bolt (800) to be detected can just screw in stretching from bottom to up
Cover in (200) and piston body (400)；
Dial gauge (600) is fixed on workbench (100) or expanding sleeve (200), and the measurement head (620) of dial gauge (600) with
The screw rod end face perpendicular contact of bolt (800) to be detected.
2. bolt strength detection device as claimed in claim 1, it is characterized in that：
The contact surface side wall of the piston body (400) and the cylinder body (300) is equipped with the seal (430) of annular.
3. bolt strength detection device as claimed in claim 2, it is characterized in that：
The seal (430) is is sleeved on piston body (400) outside or the sealing ring in piston body (400).
4. bolt strength detection device as claimed in claim 1, it is characterized in that：
The expanding sleeve (200) includes the fixed part (220) on top and the detachable part (240) of lower part, wherein：
The first positioning step (210) is equipped with the top of fixed part (220), the first positioning step (210) is placed in workbench (100) table top
On, fixed part (220) is installed in the through hole of workbench (100) and is fixed on workbench by the first positioning step (210)
(100) on；
The second positioning step (230) is equipped with the top of detachable part (240), the second positioning step (230) top is equipped with and fixed part
(220) the matched groove in bottom, fixed part (220) bottom are arranged in the groove；Second positioning step (230) is removably
It is fixed on workbench (100) lower surface.
5. bolt strength detection device as claimed in claim 4, it is characterized in that：
Fixed part (220) bottom sets some positioning protrusion, and detachable part (240) top is set and some convexes
Play corresponding location hole；Alternatively, fixed part (220) bottom sets some location holes, detachable part (240) top is set
Put positioning protrusion corresponding with some location holes；Positioning protrusion is set to be inserted into corresponding location hole.
6. bolt strength detection device as claimed in claim 4, it is characterized in that：
The detachable part (240) is made of left hitch (241) and right hitch (242) locking, wherein：
Left hitch (241) has the first inner arc surface (2411), the first exterior arc surface (2412) and the parallel left assembling of axis
Through hole (2413) and left pilot hole (2414), left assembling through hole (2413) and left pilot hole (2414) are located at the first Inner arc respectively
The both sides in face (2411), the first inner arc surface (2411) have internal thread；
Right hitch (242) has the second inner arc surface (2421), the second exterior arc surface (2422) and the parallel right assembling of axis
Hole (2423) and right assembling through hole (2424), right pilot hole (2423) and right assembling through hole (2424) are located at the second Inner arc respectively
The both sides in face (2421), the second inner arc surface (2421) have internal thread；
Left assembling through hole (2413) and right pilot hole (2423) match, left pilot hole (2414) and right assembling through hole (2424) phase
Matching；
Left assembling through hole (2413), right pilot hole (2423) are sequentially passed through using a locking member, worn successively using another locking member
Right assembling through hole (2424), left pilot hole (2414) are crossed, so as to fulfill the locking of left hitch (241) and right hitch (242).
7. bolt strength detection method, is detected using the bolt strength detection device described in claim 1, it is characterized in that：
Bolt 800 to be detected is screwed into expanding sleeve 200 and piston body 400 from bottom to up, adjusts the measurement bar 620 of dial gauge 600,
The measurement head 610 of dial gauge 600 is set to contact the screw rod end face of bolt 800 to be detected and compress 0.4mm~0.6mm, 0.4mm~
The original reading of 0.6mm, that is, dial gauge 600；
The corresponding pressure of strength criterion, i.e. maximum pressure are calculated according to strength criterion；High-pressure oil pump injects hydraulic oil to hydraulic cavities,
Start to stretch bolt 800 to be detected, reach maximum pressure to pressure, stop injection hydraulic oil；
When reaching and keeping maximum pressure, reading on dial gauge 600 is observed, if reading is maintained near original reading, and
The error of reading and original reading is not more than 0.1mm after release, and at this time, bolt 800 to be detected is considered qualified；
If reading keeps increase, bolt 800 to be detected is considered unqualified；
If reading is maintained near original reading, but after release, the error of reading and original reading is more than 0.4mm, then to be detected
Bolt 800 is still considered as unqualified；
The original reading nearby refers to the range of readings of original reading ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476382.5A CN108007782A (en) | 2017-12-29 | 2017-12-29 | Bolt strength detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476382.5A CN108007782A (en) | 2017-12-29 | 2017-12-29 | Bolt strength detection device and method |
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| Publication Number | Publication Date |
|---|---|
| CN108007782A true CN108007782A (en) | 2018-05-08 |
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ID=62048905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711476382.5A Pending CN108007782A (en) | 2017-12-29 | 2017-12-29 | Bolt strength detection device and method |
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| CN (1) | CN108007782A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115619A (en) * | 2018-07-13 | 2019-01-01 | 安徽派日特智能装备有限公司 | A kind of bolt strength detection device |
| CN109799131A (en) * | 2018-12-26 | 2019-05-24 | 芜湖卓越空调零部件有限公司 | Compressor of air conditioner upper housing bolt strength detection device |
| CN112903263A (en) * | 2021-01-18 | 2021-06-04 | 中国神华煤制油化工有限公司 | Detection mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109115619A (en) * | 2018-07-13 | 2019-01-01 | 安徽派日特智能装备有限公司 | A kind of bolt strength detection device |
| CN109799131A (en) * | 2018-12-26 | 2019-05-24 | 芜湖卓越空调零部件有限公司 | Compressor of air conditioner upper housing bolt strength detection device |
| CN112903263A (en) * | 2021-01-18 | 2021-06-04 | 中国神华煤制油化工有限公司 | Detection mechanism |
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