CN110375909A - A kind of bolt tightening force detection instrument - Google Patents
A kind of bolt tightening force detection instrument Download PDFInfo
- Publication number
- CN110375909A CN110375909A CN201910598540.7A CN201910598540A CN110375909A CN 110375909 A CN110375909 A CN 110375909A CN 201910598540 A CN201910598540 A CN 201910598540A CN 110375909 A CN110375909 A CN 110375909A
- Authority
- CN
- China
- Prior art keywords
- upper housing
- lower case
- bolt
- tightening force
- type groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Abstract
The invention discloses a kind of bolt tightening force detection instruments, including upper housing, lower case and compressed spring；Coaxial bolt hole is provided among the upper housing and lower case；The lower case is provided with the U-type groove that vertical plane is " u "-shaped, and the upper housing insertion U-type groove is interior and can be along U-type groove side walls；The compressed spring is between upper housing and lower case；The scale successively marked along bolt hole extending direction is set on the upper housing lateral wall.A kind of bolt tightening force detection instrument disclosed by the invention measures the tightening force of bolt in the compressed spring that the opposite upper housing slided and lower case and offer restoring force can occur, and provides for the place of being bolted or part bonding position and provide prestressing force in the prepackage stage.
Description
Technical field
The present invention relates to aircrafts to assemble detection device technical field, and in particular to a kind of bolt tightening force detection instrument.
Background technique
In aircraft assembly industry, due to foozle, moulding rebound etc., there are deformations for a large amount of skin parts.For
It avoids part from wasting while guaranteeing product quality, generally use the prestressed mode of control and installed, is i.e. part removal or dress
With the prepackage stage, it is being bolted place or a certain amount of power of part bonding position application, is checking whether gap width meets the requirements.
To realize the purpose, generallyd use in industry at present weight push, dynamometer press, pressure can be passed through in laboratory
Force snesor pressure, but all there is larger disadvantage in above method:
1. weight pushes: being pushed down with weights such as lead bags and check position, application face is larger, can not accurately press；It can only check gravity
Line direction, deviateing gravity direction, then error is amplified, and being parallel to gravity vertical direction can not press.
2. dynamometer presses: being pressed point by point with dynamometer to measurement point, pressure all needs hand-held dynamometer and according to reading every time
It is worth adjustment dynamics, it is troublesome in poeration；Aircraft skin deformation interact, but this method can only single-point pressure, measurement result it is credible
It spends poor.
3. pressure sensor presses: this method precision is high, but requires equipment cost greatly, not being suitable for industrial production.
Summary of the invention
The present invention is directed to the prior art, provides a kind of bolt tightening force detection work that can quickly read bolt tightening force
Tool, the tool can also provide certain prestressing force for the place of being bolted, solve the problems, such as prestress control.
The present invention is achieved through the following technical solutions: a kind of bolt tightening force detection instrument, including upper housing, lower casing
Body and compressed spring；Coaxial bolt hole is provided among the upper housing and lower case；The lower case is provided with vertically
Face is the U-type groove of " u "-shaped, and can be along U-type groove side walls in the upper housing insertion U-type groove；The compressed spring is located at upper
Between shell and lower case；The scale successively marked along bolt hole extending direction is set on the upper housing lateral wall.
Screw rod of the bolt hole for bolt passes through.The bolt hole of the upper housing and the bolt hole of lower case
Diameter is equal and is all larger than the outer screw diameter of bolt.The compressed spring is between upper housing and lower case, and compressed spring
One end and the lower end of upper housing connect, the U-type groove bottom surface of the other end and lower case connects, using compressed spring compression and return
Power is answered to realize upper housing sliding up and down in U-type groove, and measures the tightening force of bolt by reading scale.
Further, the end face of the upper housing insertion lower case is provided with the annular groove coaxial with bolt hole；The U
The annular stop part coaxial with bolt hole is provided in type groove, the annular stop part is embedded in far from one end of U-type groove bottom surface
It can slide in annular groove and along annular groove；One end of the compressed spring is fixed on the end face of annular stop part insertion annular groove
On, the other end of the compressed spring is fixed on the bottom surface of annular groove.The length of the compressed spring is less than the depth of annular groove
Degree, makes upper housing the case where not stressing, annular stop part is still partially submerged into annular groove.The annular groove and annular stop
Part plays the guiding role of compressed spring.
Further, the end face of the upper housing insertion lower case is provided with multiple positioning being circumferentially arranged along bolt hole
Slot；Multiple locating rods being circumferentially arranged along bolt hole are provided on the U-type groove bottom surface, the locating rod is along bolt hole
Extending direction setting；It can slide in the one-to-one insertion locating slot of locating rod and along locating slot；One end of the compressed spring
It is connect with locating rod far from one end of U-type groove bottom surface, the bottom surface connection of the other end and locating slot.
Further, the detection instrument further includes stop collar, and lower case is arranged in close to upper housing in the stop collar
It one end and is connect with lower case；One end setting diameter of the upper housing insertion lower case is greater than the convex annular of upper casing outside
Platform；The internal diameter of the stop collar is greater than or equal to the outer diameter of upper housing；The outer diameter of the annular convex platform is less than or equal to U-type groove
Internal diameter.The lower surface of the stop collar is pressed in the upper surface of the upper surface of lower case and the annular convex platform of upper housing, realizes annular
The fixation of boss.
Further, the vertical section of the stop collar is in " г " shape；The stop collar and the lateral wall screw thread of lower case connect
It connects, the installation with lower case, disassembly convenient for stop collar.
Further, the positioning groove bottom is provided with the guide groove coaxial with locating slot；The locating rod insertion is fixed
Guide rod coaxial with guide groove respectively is provided on the end face of position slot；The compressed spring nesting is on the guide bar, described
The cooperation of the id tolerance of guide rod outer diameter and guide groove.
Further, the upper housing is provided with bolt slot far from one end of lower case, and the head of the bolt is embeddable
In bolt slot, the head of bolt and the contact surface of upper housing can be increased for ball screw nut.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) a kind of bolt tightening force detection instrument provided by the present invention can occur the opposite upper housing slided and lower case with
And the tightening force of the compressed spring measurement bolt of restoring force is provided, and provide and pre-installing for the place of being bolted or part bonding position
Stage provides prestressing force.
(2) a kind of bolt tightening force detection instrument provided by the present invention is additionally provided with stop collar, deviates from upper housing not
Lower case.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the vertical cross-sectional of the embodiment of the present invention 2；
Fig. 3 is the face the A-A cross-sectional view of the embodiment of the present invention 2；
Fig. 4 is a schematic structural view of Embodiment 3 of the present invention；
Fig. 5 is a schematic structural view of Embodiment 4 of the present invention；
Wherein: 1-upper housing, 11-bolt holes, 12-annular grooves, 13-locating slots, 131-guide grooves, 14-bolt slots,
15-annular convex platform, 2-lower cases, 21-U-type grooves, 22-annular stop parts, 23-locating rods, 231-guide rods, 3-pressures
Contracting spring, 4-scales, 5-stop collars.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figure 1, a kind of bolt tightening force detection instrument, including upper housing 1, lower case 2 and compressed spring 3；The upper casing
Coaxial bolt hole 11 is provided among body 1 and lower case 2；The lower case 2 is provided with the U-type groove that vertical plane is " u "-shaped
21, the upper housing 1 is embedded in U-type groove 21 and can be along 21 side walls of U-type groove；The compressed spring 3 is located at upper housing 1 under
Between shell 2；The scale 4 successively marked along 11 extending direction of bolt hole is set on 1 lateral wall of upper housing.
The outer diameter of the upper housing 1 and the id tolerance of U-type groove 21 cooperate, and allow upper housing 1 along the inside of U-type groove 21
Wall sliding.The bolt hole 11 of the lower case 2 is provided on the bottom surface of U-type groove 21,21 upward opening of U-type groove.
Its working principle is that: the tool of will test is placed on the part A and part B to be connected for being provided with threaded hole, makes spiral shell
Bolt throughhole 11 and threaded hole are coaxial；The screw rod of bolt passes through the bolt hole 11 of upper housing 1 and the bolt hole 11 of lower case 2,
The head is pressed on the upper surface of upper housing 1.When original state, gravity of the compressed spring 3 in bolt and upper housing 1
The lower compression of effect；Scale 4 zero on upper surface alignment 1 lateral wall of upper housing of the lower case 2；Then bolt is screwed, spiral shell is made
The screw rod of bolt screws in the threaded hole of part A, and upper housing 1 is pressurized to the movement of lower case 2, and compressed spring 3 is compressed.Due to compression
The restoring force of spring 3 pushes lower case 2 to push part A, is pressed in part A on part B, mentions for the connection of part A and part B
For prestressing force；Continue to rotate bolt, compress part A and part B, reads the upper surface pair of 1 lateral wall upper-lower casing 2 of upper housing
The scale 4 answered is read, and the size of tightening force suffered by bolt can be obtained.It, can be in addition, using detection instrument of the invention
It monitors the pressing force between part A and part B in real time, keeps the compression of part A and part B and the tightening force of bolt.
The displacement of the opposite lower case 2 of the upper housing 1 and the corresponding relationship of tightening force meet Hooke's law.
Preferably, the upper housing 1 is provided with bolt slot 14 far from one end of lower case 2, and the head of the bolt can be embedding
Enter in bolt slot 14, the head of bolt and the contact surface of upper housing 1 can be increased for ball screw nut.
Embodiment 2
The present embodiment is to improve on the basis of embodiment 1, is theed improvement is that: as shown in Figure 2,3, the upper housing
The end face of 1 insertion lower case 2 is provided with the annular groove 12 coaxial with bolt hole 11；It is provided in the U-type groove 21 and bolt
The coaxial annular stop part 22 of through-hole 11, the annular stop part 22 is far from one end insertion annular groove 12 of 21 bottom surface of U-type groove
And it can be slided along annular groove 12；One end of the compressed spring 3 is fixed on annular stop part 22 and is embedded on the end face of annular groove 12,
The other end of the compressed spring 3 is fixed on the bottom surface of annular groove 12.The length of the compressed spring 3 is less than annular groove 12
Depth makes upper housing 1 the case where not stressing, and annular stop part 22 is still partially submerged into annular groove 12.The annular groove 12
The guiding role of compressed spring 3 is played with annular stop part 22.
The bolt hole 11, annular groove 12, annular stop part 22, U-type groove 21,1 lateral wall of upper housing are coaxially disposed；
The internal diameter of the annular groove 12 is greater than the diameter of bolt hole 11, the internal diameter of the annular stop part 22 and the internal diameter of annular groove 12
Tolerance fit, the outer diameter of the annular stop part 22 and the outer diameter tolerance of annular groove 12 cooperate；1 lateral wall of upper housing it is straight
Diameter is greater than the outer diameter of annular groove 12, and the diameter of 1 lateral wall of upper housing and the id tolerance of U-type groove 21 cooperate.Upper housing 1 can
It is slided with 2 zerofriction force of lower case, to improve the accuracy of tightening force suffered by the bolt measured.
Other parts are substantially the same manner as Example 1 in the present embodiment, therefore no longer repeat one by one.
Embodiment 3
The present embodiment is to improve on the basis of embodiment 1, is theed improvement is that: as shown in figure 4, the upper housing 1
The end face of insertion lower case 2 is provided with multiple locating slots 13 being circumferentially arranged along bolt hole 11；It is set on 21 bottom surface of U-type groove
Multiple locating rods 23 being circumferentially arranged along bolt hole 11 are equipped with, the locating rod 23 is set along the extending direction of bolt hole 11
It sets；It can slide in the one-to-one insertion locating slot 13 of the locating rod 23 and along locating slot 13；One end of the compressed spring 3 and fixed
Position bar 23 is connected far from one end of 21 bottom surface of U-type groove, and the other end is connect with the bottom surface of locating slot 13.
The locating slot 13, locating rod 23 and the one-to-one setting of compressed spring 3, the setting of compressed spring 3 are positioning
In slot 13, guiding role is played.It uses multiple compressed springs 3 to provide restoring force for detection tightening force, enhances detection instrument
Load range, and the rate of decay of the elastic force of compressed spring 3 is reduced, extend the service life of detection instrument.
Other parts are substantially the same manner as Example 1 in the present embodiment, therefore no longer repeat one by one.
Embodiment 4
The present embodiment is improved on the basis of embodiment 3, is theed improvement is that: as shown in figure 5, the locating slot 13
Bottom surface is provided with the guide groove 131 coaxial with locating slot 13；The locating rod 23 is embedded on the end face of locating slot 13 and is respectively provided with
There is guide rod 231 coaxial with guide groove 131 respectively；The compressed spring 3 is nested on guide rod 231, the guide rod 231
The id tolerance of outer diameter and guide groove 131 cooperates, and realizes that compressed spring 3 is inside and outside and is oriented to simultaneously, improves accuracy.
Other parts are substantially the same manner as Example 3 in the present embodiment, therefore no longer repeat one by one.
Embodiment 5
The present embodiment is improved on the basis of 2 ~ 4 any embodiment of embodiment, is theed improvement is that: the detection work
Tool further includes stop collar 5, and the stop collar 5 is arranged in lower case 2 and connect close to one end of upper housing 1 and with lower case 2；It is described
One end setting diameter that upper housing 1 is embedded in lower case 2 is greater than the annular convex platform 15 of 1 lateral surface of upper housing；The stop collar 5 it is interior
Diameter is greater than or equal to the outer diameter of upper housing 1；The outer diameter of the annular convex platform 15 is less than or equal to the internal diameter of U-type groove 21.The limit
The lower surface of position ring 5 is pressed in the upper surface of the upper surface of lower case 2 and the annular convex platform 15 of upper housing 1, realizes annular convex platform 15
Fixation.
5 bottom surface section of stop collar is fixed on the end face of lower case 2, is partially pressed in the annular convex platform of upper housing 1
On 15, limitation upper housing 1 is detached from lower case 2, while limiting the compression zone of compressed spring 3, avoids spring excessive condensation, rises
To the effect of protection spring.
Preferably, the compressed spring 3 remains compressive state, and lower case 2 is made to have the trend moved down.
Other parts and 2 ~ 4 any embodiment of embodiment are essentially identical in the present embodiment, therefore no longer repeat one by one.
Embodiment 6
The present embodiment is improved on the basis of embodiment 5, is theed improvement is that: the vertical section of the stop collar 5 is in
" г " shape；The stop collar 5 is threadedly coupled with the lateral wall of lower case 2, and realization stop collar 5 is detachably connected with lower case 2.
The stop collar 5 includes horizontally disposed horizontal part and the vertical portion being vertically arranged, and the horizontal part is pressed in lower casing
On the end face of body 2 and the ring-shaped step of upper housing 1；The internal diameter of the vertical portion is equal with the outer diameter of lower case 2.The vertical portion
Inner sidewall on be provided with internal screw thread, be provided with external screw thread on the lateral wall of the lower case 2, realize vertical portion and lower case 2
Threaded connection.
Other parts are substantially the same manner as Example 5 in the present embodiment, therefore no longer repeat one by one.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (7)
1. a kind of bolt tightening force detection instrument, which is characterized in that including upper housing (1), lower case (2) and compressed spring (3)；
Coaxial bolt hole (11) are provided among the upper housing (1) and lower case (2)；The lower case (2) is provided with vertically
Face is the U-type groove (21) of " u "-shaped, and can be along U-type groove (21) side walls in upper housing (1) insertion U-type groove (21)；It is described
Compressed spring (3) is located between upper housing (1) and lower case (2)；It is arranged on upper housing (1) lateral wall along bolt hole
(11) scale (4) that extending direction successively marks.
2. a kind of bolt tightening force detection instrument according to claim 1, it is characterised in that: upper housing (1) insertion
The end face of lower case (2) is provided with the annular groove (12) coaxial with bolt hole (11)；It is provided in the U-type groove (21) and spiral shell
The coaxial annular stop part (22) of bolt throughhole (11), the annular stop part (22) are embedded in far from one end of U-type groove (21) bottom surface
It can slide in annular groove (12) and along annular groove (12)；It is embedding that one end of the compressed spring (3) is fixed on annular stop part (22)
On the end face for entering annular groove (12), the other end of the compressed spring (3) is fixed on the bottom surface of annular groove (12).
3. a kind of bolt tightening force detection instrument according to claim 1, it is characterised in that: upper housing (1) insertion
The end face of lower case (2) is provided with multiple locating slots (13) being circumferentially arranged along bolt hole (11)；U-type groove (21) bottom surface
On be provided with multiple locating rods (23) being circumferentially arranged along bolt hole (11), the locating rod (23) is along bolt hole (11)
Extending direction setting；It can slide in the one-to-one insertion locating slot (13) of locating rod (23) and along locating slot (13)；The pressure
One end of contracting spring (3) is connect with locating rod (23) far from one end of U-type groove (21) bottom surface, the bottom of the other end and locating slot (13)
Face connection.
4. a kind of bolt tightening force detection instrument according to claim 2 or 3, it is characterised in that: further include stop collar
(5), stop collar (5) setting is connect close to the one end of upper housing (1) and in lower case (2) with lower case (2)；The upper casing
One end setting diameter that body (1) is embedded in lower case (2) is greater than the annular convex platform (15) of upper housing (1) lateral surface；The stop collar
(5) internal diameter is greater than or equal to the outer diameter of upper housing (1)；The outer diameter of the annular convex platform (15) is less than or equal to U-type groove (21)
Internal diameter.
5. a kind of bolt tightening force detection instrument according to claim 4, it is characterised in that: the stop collar (5) is erected
Section is in " г " shape；The stop collar (5) is threadedly coupled with the lateral wall of lower case (2).
6. a kind of bolt tightening force detection instrument according to claim 3, it is characterised in that: locating slot (13) bottom surface
It is provided with the guide groove (131) coaxial with locating slot (13)；On the end face of locating rod (23) insertion locating slot (13)
It is provided with guide rod (231) coaxial with guide groove (131) respectively；The compressed spring (3) is nested on guide rod (231),
The id tolerance of guide rod (231) outer diameter and guide groove (131) cooperates.
7. a kind of according to claim 1 ~ 3,5,6 described in any item bolt tightening force detection instruments, it is characterised in that: on described
Shell (1) is provided with bolt slot (14) far from the one end of lower case (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910598540.7A CN110375909B (en) | 2019-07-04 | 2019-07-04 | Bolt tension detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910598540.7A CN110375909B (en) | 2019-07-04 | 2019-07-04 | Bolt tension detection tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110375909A true CN110375909A (en) | 2019-10-25 |
| CN110375909B CN110375909B (en) | 2021-07-02 |
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ID=68251937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910598540.7A Active CN110375909B (en) | 2019-07-04 | 2019-07-04 | Bolt tension detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110375909B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317736A (en) * | 1996-05-24 | 1997-12-09 | Fujitsu Ten Ltd | Screw with fastening torque display and nut with fastening torque display |
| CN104296896A (en) * | 2014-11-04 | 2015-01-21 | 山东科技大学 | Direct reading type rock bolt dynamometer used for simulation test and working method thereof |
| CN107525619A (en) * | 2017-07-18 | 2017-12-29 | 河南航天精工制造有限公司 | A kind of plate nut launch force detects instrument |
| CN107782619A (en) * | 2017-09-29 | 2018-03-09 | 兰州飞行控制有限责任公司 | A kind of cable pin intensity detection frock |
| CN208313698U (en) * | 2018-07-10 | 2019-01-01 | 滁州泰斯特电子科技有限公司 | A kind of refrigerator part pressure resistant testing device |
| CN109406037A (en) * | 2018-12-13 | 2019-03-01 | 美钻深海能源科技研发（上海）有限公司 | A kind of height pressure sensor with pressure indicating structure |
-
2019
- 2019-07-04 CN CN201910598540.7A patent/CN110375909B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09317736A (en) * | 1996-05-24 | 1997-12-09 | Fujitsu Ten Ltd | Screw with fastening torque display and nut with fastening torque display |
| CN104296896A (en) * | 2014-11-04 | 2015-01-21 | 山东科技大学 | Direct reading type rock bolt dynamometer used for simulation test and working method thereof |
| CN107525619A (en) * | 2017-07-18 | 2017-12-29 | 河南航天精工制造有限公司 | A kind of plate nut launch force detects instrument |
| CN107782619A (en) * | 2017-09-29 | 2018-03-09 | 兰州飞行控制有限责任公司 | A kind of cable pin intensity detection frock |
| CN208313698U (en) * | 2018-07-10 | 2019-01-01 | 滁州泰斯特电子科技有限公司 | A kind of refrigerator part pressure resistant testing device |
| CN109406037A (en) * | 2018-12-13 | 2019-03-01 | 美钻深海能源科技研发（上海）有限公司 | A kind of height pressure sensor with pressure indicating structure |
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| Publication number | Publication date |
|---|---|
| CN110375909B (en) | 2021-07-02 |
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